Information
-
Patent Grant
-
6494452
-
Patent Number
6,494,452
-
Date Filed
Thursday, October 19, 200024 years ago
-
Date Issued
Tuesday, December 17, 200222 years ago
-
Inventors
-
-
Examiners
Agents
-
CPC
-
US Classifications
Field of Search
US
- 271 276
- 271 182
- 271 194
- 271 195
- 271 196
- 271 197
- 271 183
-
International Classifications
-
Abstract
An apparatus and method to decelerate printed product in a stacking process is provided. The printed product may be a product such as printed paper, foil, or plastic. A continuous web of product may be cut into single items, one item at a time, and then the items may be stacked on top of one another. The apparatus may be comprised of a cylinder, which is comprised of a vacuum chamber having perforations and a blowing chamber having perforations. A first slow delivery tape, and first and second fast delivery tapes may also be provided. Each of the delivery tapes may have perforations to allow air to pass through and from or to the cylinder. The first slow delivery tape is wrapped around the cylinder. The first and second fast delivery tapes are wrapped around rollers and may help to create separation between individual cut items and may control moving items. The first slow delivery tape may slow down items to allow stacking of items. The apparatus may also include first and second brushes ratably connected to housing. One or the other brush can push down on individual items to move an item closer towards the cylinder. The apparatus may additionally include a cutting device, which cuts individual items from a continuous web. The slow delivery tapes may also travel over a slow delivery tape vacuum and the second fast delivery tapes may travel over a fast delivery vacuum.
Description
FIELD OF THE INVENTION
This invention relates to improved methods and apparatus for moving pieces of cut product in a conveyor or printer system.
BACKGROUND OF THE INVENTION
Various apparatus and method are known for moving products on conveyors and for providing printed items or products, such as printed papers.
SUMMARY OF THE INVENTION
The present invention in one embodiment provides an apparatus and method to decelerate printed product in a stacking process. The printed product may be products such as printed paper, foil, or plastic. The finishing stage in web printing processing of materials, like paper, foil, and plastic is cutting and stacking. The equipment in this process are sheeters, rotary cutters, etc. A continuous web of product is usually cut into single items, one item at a time, and then the items need to be stacked on top of one another.
The present invention in one embodiment discloses an apparatus for moving items comprised of a cylinder wherein the cylinder is comprised of a vacuum chamber and a blowing chamber. The items may be pieces of product. Each item or piece of product may be an individually cut piece of paper from a continuous web of paper.
The cylinder may be comprised of a plurality of cylinder perforations, which allow air from the blowing chamber to be blown out of the cylinder perforations. The same cylinder perforations may also allow air to be sucked into the vacuum chamber through the cylinder perforations. Note that the same cylinder perforations may be used to vacuum and to blow air in different times and in different areas.
The apparatus of one embodiment of the present invention may also include a first slow delivery tape which is wrapped around the cylinder, and which can transport items. The apparatus may be further comprised of a plurality of first fast delivery tape rollers and a first fast delivery tape which is wrapped around the plurality of first fast delivery tape rollers. At least a portion of the first fast delivery tape may lie above at least a portion of the first slow delivery tape. A plurality of first slow delivery tapes and a plurality of first fast delivery tapes analogous to the above may be provided.
The apparatus may also include a first brush disc ratably connected to a housing. The first brush disc may include a first brush which can push down a first piece of product to move the first piece of product closer towards blowing vacuum cylinder. A plurality of further brush discs may also be provided. Each brush disc may be connected to a shaft, which may be connected to housing members by bearings.
The apparatus of one embodiment of the present invention may also be comprised of a plurality of second fast delivery tape rollers, and a second fast delivery tape which is wrapped around the plurality of second fast delivery tape rollers. At least a portion of each of the second fast delivery tape can lie below a portion of the first fast delivery tape. At least a portion of the first fast delivery tape and at least a portion of the second fast delivery tape can act together to move items. The apparatus may additionally comprise a cutting device, which cuts pieces of paper from a continuous web of paper. A slow delivery tape vacuum may also be provided in the apparatus of the first embodiment, wherein each the slow delivery tape may move over the slow delivery tape vacuum in order to transport an item. The slow delivery tape may have a plurality of perforations and the slow delivery tape vacuum may have a long opening. The slow delivery tape vacuum may have supporting rollers inside the long vacuum opening, to support the slow delivery tape. The slow delivery tape vacuum may draw air in through the perforations of the slow delivery tape and through the supporting rollers in the slow delivery tape vacuum. A plurality of slow delivery tapes, slow delivery tape vacuums, second fast delivery tapes, and first fast delivery tapes may be provided.
The apparatus of the first embodiment may also be comprised of a fast delivery tape vacuum wherein the first fast delivery tape moves under the fast delivery tape vacuum in order to transport an item. The first fast delivery tape may have a plurality of perforations and the fast delivery tape vacuum may have a plurality of perforations. The fast delivery tape vacuum may draw air in through the perforations in the first fast delivery tape and through the perforations in the fast delivery tape vacuum. The apparatus may be comprised of a plurality of such fast delivery tape vacuums and first fast delivery tapes.
A first item, particularly a first piece of paper cut from a continuous web of paper; may be moved by the apparatus in a first direction by the first and second fast delivery tapes. A front portion of the first piece of paper may be pushed upwards by the blowing air emitted from the blowing vacuum cylinder. A rear portion of the first piece of paper may be pushed downwards by a plurality of first pressing brushes of the corresponding plurality of first pressing brush disc and sucked downwards by the vacuum portion of the blowing vacuum cylinder. The first piece of paper may be further moved in the first direction by a plurality of the slow delivery tape.
The apparatus in a first direction may move a second item, particularly a second piece of paper cut from a continuous web of paper by the first and second fast delivery tapes. A front portion of the second piece of paper may be pushed upwards by blowing air emitted from the blowing vacuum cylinder. A rear portion of the second piece of paper may be pushed downwards by a plurality of second pressing brushes, of the corresponding plurality of first pressing brush discs and sucked downwards by the vacuum portion of the blowing vacuum cylinder. The second piece of paper may be further moved in the first direction by the plurality of slow delivery tapes. The second piece of paper may be stacked on top of the first piece of paper, so that the second piece of paper overlaps the first piece of paper with a constant offset.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
shows a side cross sectional view of an apparatus for cutting and stacking printed product in accordance with an embodiment of the present invention;
FIG. 2
shows a top sectional view of the apparatus of
FIG. 1
;
FIG. 3A
shows a side cross sectional view of part of the apparatus of
FIG. 1
, in a first state, when first and second pieces of product are located at first and second positions, respectively;
FIG. 3B
shows a side cross sectional view of part of the apparatus of
FIG. 1
, in a second state, when first and second pieces of product are located at third and fourth positions, respectively;
FIG. 3C
shows a side cross sectional view of part of the apparatus of
FIG. 1
, in a third state, when first and second pieces of product are located at fifth and sixth positions, respectively;
FIG. 3D
shows a side cross sectional view of part of the apparatus of
FIG. 1
, in a fourth state, when first, second, and third pieces of product are located at seventh, eighth, and ninth positions, respectively;
FIG. 3E
shows a side cross sectional view of part of the apparatus of
FIG. 1
, in a fifth state, when first, second, and third pieces of product are located at tenth, eleventh, and twelfth positions, respectively;
FIG. 3F
shows a side cross sectional view of part of the apparatus of
FIG. 1
, in a sixth state, when first, second, and third pieces of product are located at thirteenth, fourteenth, and fifteenth positions, respectively;
FIG. 3G
shows a side cross sectional view of part of the apparatus of
FIG. 1
, in a seventh state, when first, second, third, and fourth pieces of product are located at sixteenth, seventeenth, eighteenth, and nineteenth positions, respectively;
FIG. 3H
shows a side cross sectional view of part of the apparatus of
FIG. 1
, in a eighth state, when first, second, third, fourth, and fifth pieces of product are located at twentieth, twenty-first, twenty-second, twenty-third, and twenty-fourth positions respectively;
FIG. 4A
shows a front cross sectional view from
FIG. 3B
of part of the apparatus of
FIG. 1
including the blowing vacuum cylinder and the pressing brush discs;
FIG. 4B
shows a front cross sectional view from
FIG. 3D
of the apparatus of
FIG. 1
including the blowing vacuum cylinder and the pressing brush discs;
FIG. 4C
shows a front cross sectional view from
FIG. 3F
of the apparatus of
FIG. 1
including the blowing vacuum cylinder, pressing brush discs and slow delivery tape vacuums;
FIG. 5A
shows a cross sectional view of a blowing vacuum cylinder for use in the embodiment of
FIG. 1
;
FIG. 5B
shows a perspective view of a blowing vacuum cylinder shaft which may be part of the blowing vacuum cylinder of
FIG. 5A
;
FIG. 5C
shows a septum device located inside a blowing vacuum cylinder shaft of
FIGS. 5A and 5B
;
FIGS. 6A-6D
shows 4 states of one single opening of perforation from the blowing vacuum cylinder roller in relation to the chambers in the blowing vacuum cylinder shaft;
FIG. 7A
shows a diagram of the airflow surrounding the blowing vacuum cylinder and slow delivery tapes of
FIGS. 3A-H
, and
7
B;
FIG. 7B
shows a perspective view of the blowing vacuum cylinder and a plurality of slow delivery tapes and a diagram of the airflow from
FIG. 7A
;
FIG. 8
shows alternative design of synchronization between blowing vacuum cylinder and slow delivery tapes;
FIG. 9
shows a side cross sectional view alternative design of the part if the apparatus of
FIG. 1
which may be an alternative to
FIGS. 3A-3H
; and
FIG. 10
shows a side cross sectional view of an alternative embodiment of the present invention.
DETAILED DESCRIPTION OF THE DRAWINGS
FIG. 1
shows a side cross sectional view of apparatus
10
comprised of shear cutting section
12
, feed roller
14
, stationary knife
16
, rotary knives cylinder
18
, a plurality of second fast delivery tapes
20
a-f
, a plurality of first fast delivery tapes
22
a-f
, a plurality of first pressing brush discs
24
a-e
with set of brushes
23
a-e
and
25
a-e
, a plurality of fast delivery tape vacuums
26
a-f
, blowing vacuum cylinder
28
, plurality of slow delivery tape vacuums
30
a-e
, plurality of perforated slow delivery tapes
32
a-e
, plurality of air nozzles
34
a-d
, a plurality of stop plates
36
a-f
, piling system
38
, input roller
42
, plurality of nip wheels
44
a-d
, stationary knife support
48
, second fast delivery front roller
50
, first fast delivery front roller
52
, plurality of first fast delivery tape tension pulleys
58
a-f
, first fast delivery drive roller
60
, second fast delivery drive roller
62
, first fast delivery rear roller
66
, and slow delivery drive roller
68
. Some of the components of the apparatus
10
are not shown in
FIG. 1
but are shown in other figures, such as FIG.
2
and FIG.
4
A.
The stationary knife
16
and the rotary knives cylinder
18
may be thought of as being part of a cutting device.
A continuous printed web
40
of material is shown being fed into the apparatus
10
. The continuous printed web
40
may be a continuous web of printed paper.
FIG. 2
shows a top sectional view of the apparatus
10
of FIG.
1
. As shown in
FIG. 2
, the plurality of slow delivery tapes
32
a-e
include tapes
32
a
,
32
b
,
32
c
,
32
d
, and
32
e
. The perforations in each of these slow delivery tapes
32
a-e
allow air from the blowing vacuum cylinder
28
and slow delivery tape vacuums
30
a-e
, to pass through the perforations. The second fast delivery tapes
20
a-f
include tapes
20
a
,
20
b
,
20
c
,
20
d
,
20
e
, and
20
f
. Between rotary knives cylinder
18
and blowing vacuum cylinder
28
there may be four rollers,
50
,
52
,
60
, and
62
and individual first fast delivery tape tension pulleys
58
a
-
58
f
. Some of these components are shown in
FIG. 2
or in other figures.
FIG. 2
also shows rotary knives cylinder
18
connected through rotary knife cylinder ends
18
a
and
18
b
to members
72
and
74
by cylinder bearings (cylinder bearings not shown)
Note that the stop plates
36
a-f
may be in pieces as it is shown in FIG.
2
.
FIG. 3A
shows a side cross sectional view of part of the apparatus
10
of
FIG. 1
, in a first state, when a first piece of product
70
a
is located at a first position and second piece of product
70
b
is located at a second position, respectively. The pieces of product
70
a
and
70
b
may also be called items. The first and second pieces of product
70
a-b
, may each piece of piece of paper that was cut off from a continuous web
40
of printed paper.
FIG. 3A
shows first and second pressing brushes
23
a-e
and
25
a-e
from first pressing-brush disc
24
a-e
. Arrows
29
a
in
FIG. 3A
indicate that air is being blown or emitted from the blowing portion
86
of the blowing vacuum cylinder
28
as shown. Arrows
29
b
indicate that air is being drawn in or sucked into the vacuum portion
87
of the blowing vacuum cylinder
28
as shown. Thus blowing-vacuum cylinder
28
blows air outwards in one area (blowing portion
86
) and sucks in air in another area (vacuum portion
87
).
Product
70
a
moves horizontally in direction D. Applying suction to first fast delivery tapes
22
a-f
through the tape openings holds the front portion of product
70
a
by fast delivery tape vacuums
26
a-f
shown by arrows
27
a-f
. In this same state blowing vacuum cylinder
28
blows air from blowing portion
86
on middle portion of product
70
a
(arrows
29
a
), pressing and holding it against first fast delivery tapes
22
a-f
. Both of them keep product
70
a
away from suction of blowing vacuum cylinder vacuum portion
87
shown as arrows
29
b
. Rear portion of product
70
a
is fully controlled by first and second fast delivery tapes
22
a-f
and
20
a-f
. Product
70
a
is moved with first and second fast delivery tapes speed, which is called the fast delivery tape speed
101
.
Product
70
b
is fully controlled by first and second fast delivery tapes
22
a-f
and
20
a-f
and moved horizontally in direction D with fast delivery tapes speed
101
.
FIG. 3B
shows a side cross sectional view of part of the apparatus
10
of
FIG. 1
, in a second state, when the first piece of product
70
a
is located at a third position and the second piece of product
70
b
is located at a fourth position.
The product
70
a
has moved horizontally in direction D from the position in
FIG. 3A
to the position on
FIG. 3B
with fast delivery tapes speed
101
. Front and middle portion of product
70
a
is held by applying suction to first fast delivery tapes
22
a-f
through holes in tapes by fast delivery tapes vacuum
26
a-f
shown by arrows
27
a-f
. In this same state blowing vacuum cylinder
28
blows air from blowing portion
86
on rear portion of product
70
a
(arrows
29
a
) pressing and holding it against first fast delivery tapes
22
a-f
. Both of them keep product
70
a
away from suction of blowing vacuum cylinder vacuum portion
87
shown by arrows
29
b
and suction of slow delivery tape vacuums
30
a-e
shown by arrows
54
a-e.
The product
70
b
has moved horizontally in direction D from position in
FIG. 3A
to the position in FIG.
3
B and is fully controlled by first and second fast delivery tapes
22
a-f
and
20
a-f
and moved with fast delivery tapes speed
101
.
FIG. 3C
shows a side cross sectional view of part of the apparatus
10
of
FIG. 1
, in a third state, when the first piece of product
70
a
is located at a fifth position and the second piece of product
70
b
is located at a sixth position. The product
70
a
has moved horizontally in direction D from the position in
FIG. 3B
to the position in FIG.
3
C. The front and middle portion of the product
70
a
is shown in
FIG. 3C
is held by applying suction to the first fast delivery tapes
22
a-f
by fast delivery tape vacuums
26
a-f
(arrows
27
a-f
). Rear portion of the product
70
a
starts to be pressed down by the rotated set of first pressing brushes
23
a-e
from the set of first pressing brushes discs
24
a-e
against vacuum portion
87
of blowing vacuum cylinder
28
. In this same state the blowing vacuum cylinder
28
sucks down this portion of the product to the surface of cylinder vacuum portion
87
shown by arrows
29
b
. Blowing vacuum cylinder is driven by slow delivery drive roller
68
through slow delivery tapes
32
a-e
and run with peripheral speed, same value like linear speed of slow delivery tapes, but 7-10 times slower than fast delivery tapes speed
101
. Peripheral blowing vacuum cylinder speed and slow delivery tapes speed have called slow delivery speed
103
see FIG.
3
C. Speed of product
70
a
is subject to suction of fast delivery tape vacuums
26
a-f
shown by arrows
27
a-f
and suction of blowing vacuum cylinder
28
shown by arrows
29
b
. Because suction of blowing vacuum cylinder
28
is greater than suction of upper fast delivery tapes vacuums
26
a-f
and slow delivery speed
103
is 7-10 times smaller than fast delivery tapes speed
101
, product
70
a
starts to be controlled by blowing vacuum cylinder
28
and brake down speed from fast delivery tapes speed
101
to slow delivery speed
103
. To fully control brake down speed of the product
70
a
, first fast delivery tapes
22
a-f
have to have low surface friction and blowing vacuum cylinder has to have high surface friction coated by rubber, urethane or by other high friction material.
The product
70
b
has moved horizontally in direction D from the position in
FIG. 3B
to the position
3
C. Blowing vacuum cylinder
28
blows air from blowing portion
86
on front portion of the product
70
b
(arrows
29
a
) pressing and holding it against first fast delivery tapes
22
a-f
and keep product away from suction of blowing vacuum cylinder vacuum portion
87
shown by arrows
29
b
. Middle and rear portion of product
70
b
is fully controlled by first and second fast delivery tapes
22
a-f
and
20
a-f
. Product
70
b
moves with fast delivery tapes speed
101
.
FIG. 3D
shows a side cross sectional view of part of the apparatus
10
of
FIG. 1
, in a fourth state, when the first piece of product
70
a
is located at a seventh position, the second piece of product
70
b
is located at a eighth position and the third piece of Product
70
c
is located at ninth position. The product
70
a
has moved horizontally in direction D from the position in
FIG. 3C
to position in
FIG. 3D
with slow delivery speed
103
. First set of pressing brushes
23
a-e
from the first set of pressing brushes discs
24
a-e
rotate and more press rear portion of product
70
a
against blowing vacuum cylinder and bigger area of product
70
a
sticks to surface of vacuum portion
87
of blowing vacuum cylinder
28
and slow delivery tapes
32
a-e
. Part of the middle and front portion of the product
70
a
is sucked by first fast delivery tapes
22
a-f
through openings in tapes by fast delivery tapes vacuums
26
a-f
(arrows
27
a-f
) but it slips over tapes low friction surfaces.
The product
70
b
has moved horizontally in direction D from the position in
FIG. 3C
to the position
3
D. Blowing vacuum cylinder
28
blows air from blowing portion
86
on front portion of the product
70
b
(arrows
29
a
), pressing and holding it against first fast delivery tapes
22
a-f
and keeping product away from suction of blowing vacuum cylinder vacuum portion
87
shown by arrows
29
b
. Middle and rear portion of product
70
b
is fully controlled by first and second fast delivery tapes
22
a-f
and
20
a-f
. Product
70
b
moves with fast delivery tapes speed
101
.
Product
70
c
is fully controlled by first and second delivery tapes
22
a-f
and
20
a-f
and moved horizontally in direction D with fast delivery tapes speed
101
.
FIG. 3E
shows a side cross sectional view of part of the apparatus
10
of
FIG. 1
, in a fifth state, when the first piece of product
70
a
is located at a tenth position and the second piece of product
70
b
is located at eleventh position and the third piece of product
70
c
is located at a twelfth position. The product
70
a
has moved horizontally from the position in
FIG. 3D
to the position in
FIG. 3E
so that the product
70
a
has moved with slow delivery speed
103
. Rear portion of product
70
a
sticks to the vacuum portion
87
of blowing vacuum cylinder
28
. Front portion of the products is sucked up by first fast delivery tapes
22
a-f
through opening in tapes by fast delivery tapes vacuums
26
a-f
, but slips over low friction surface of tapes. In this same time slow delivery tape vacuums
30
a-e
suck down middle and latter front portion of product
70
a
to perforated slow delivery tapes
32
a-e
through tape openings by slow delivery tapes vacuum
30
a-e
shows arrows
54
a-e
and front and middle portion of product start to stick to slow delivery tapes
32
a-e
as shown in FIG.
3
E.
FIG. 3E
shows slow delivery tapes supporting rollers
31
a-e
as a pair of slow delivery tape vacuums
30
a-e
to support tapes during applying suction (arrows
54
a-e
).
Product
70
b
moves horizontally in direction D from the position in
FIG. 3D
to the position in FIG.
3
E. The front portion is held by applying suction to first fast delivery tapes
22
a-f
through tapes openings by fast delivery tapes vacuums
26
a-f
shown by arrows
27
a-f
. In this same state blowing vacuum cylinder
28
blows air from blowing portion
86
on middle portion of product
70
b
(arrows
29
a
), pressing and holding it against first fast delivery tapes
22
a-f
. Both of them keep product
70
b
away from suction of blowing vacuum cylinder vacuum portion
87
shown by arrows
29
b
. Rear portion of product
70
b
is fully controlled by first and second fast delivery tapes
22
a-f
and
20
a-f
. Product
70
b
is moved with fast delivery tapes speed
101
.
The product
70
c
has moved horizontally in direction D from position in
FIG. 3D
to the position in FIG.
3
E and is fully controlled by first and second fast delivery tapes
22
a-f
and
20
a-f
and moved with fast delivery tapes speed
101
.
FIG. 3F
shows a side cross sectional view of part of the apparatus
10
of
FIG. 1
, in a sixth state, when the first piece of product
70
a
is located at a thirteenth positicn and the second piece of product
70
b
is located at a fourteenth position, and a third piece of product
70
c
is located at a fifteenth position. The product
70
a
has moved horizontally from the position in
FIG. 3E
to the position in
FIG. 3F
so that the product
70
a
has moved out off the vacuum portion
87
, of cylinder
28
further in the direction D. Product
70
a
moved with slow delivery speed
103
and starts to be controlled only by perforated slow delivery tapes
32
a-e
by applying suction (shown by arrows
54
a-e
) through tapes openings by slow delivery tapes vacuums
30
a-e.
The product
70
b
has moved horizontally in direction D from the position in
FIG. 3E
to the position in
FIG. 3F
with fast delivery tapes speed
101
. Front and middle portion of product
70
b
is held by applying suction to first fast delivery tapes
22
a-f
through holes in tapes by fast delivery tapes vacuums
26
a-f
shown by arrows
27
a-f
. In this same state blow vacuum cylinder
28
blows air from blowing portion
86
on rear portion of product
70
b
(arrows
29
a
) pressing and holding it against first fast delivery tapes
22
a-f
. Both of them keep product
70
b
away from suction of blowing vacuum cylinder vacuum portion
87
shown as arrows
29
b.
The product
70
c
has moved horizontally in direction D from position in
FIG. 3E
to the position in FIG.
3
F and is fully controlled by first and second fast delivery tapes
22
a-f
and
20
a-f
and moved with fast delivery tapes speed
101
.
FIG. 3G
shows a side cross sectional view of part of the apparatus
10
of
FIG. 1
, in a seventh state, when the first piece of product
70
a
is located at a sixteenth position and the second piece of product
70
b
is located at seventeenth position, third piece of product
70
c
is located at the eighteenth positions, and fourth piece of product
70
d
is located at the nineteenth position. The product
70
a
has moved horizontally from the position in
FIG. 3F
to the position in
FIG. 3G
, with slow delivery speed
103
and is controlled by perforated slow delivery tapes
32
a-e
by applying suction shown by arrows
54
a-c
, through tapes openings by slow delivery tapes vacuums
30
a-e
. The product
70
b
has moved horizontally in direction D from the position in
FIG. 3F
to the position in FIG.
3
G. Front and middle portion of the product
70
b
shown in
FIG. 3G
is held by applying suction to the first fast delivery tapes
22
a-f
by fast delivery tape vacuums
26
a-f
(arrows
27
a-f
). Rear portion of the product
70
b
is pressed down by the rotated set of second pressing brushes
25
a-e
from the set of first pressing brushes discs
24
a-e
against vacuum portion
87
of blowing vacuum cylinder
28
. In this same state blowing vacuum cylinder
28
sucks down this portion of the product to the surface of cylinder
28
(vacuum portion
87
) as shown by arrows
29
b
. Speed of product
70
b
is subject to suction of fast delivery tape vacuum
26
a-f
shown by arrows
27
a-f
and suction off blowing vacuum cylinder
28
shown by arrows
29
b
. Because suction of blowing vacuum cylinder
28
(arrows
29
b
) is greater than suction of upper fast delivery tapes vacuums
26
a-f
(arrows
27
a-f
), and slow delivery speed
103
is 7-10 times smaller than fast delivery tape speed
101
, the product
70
b
starts to be controlled by blowing vacuum cylinder
28
and brake down speed from fast delivery tapes speed
101
to the slow delivery speed
103
. Front and middle portion of product
70
b
will slip over low friction surface of first fast delivery tapes
22
a-f.
The product
70
c
has moved horizontally in direction D from the position in
FIG. 3F
to the position on FIG.
3
G. Blowing vacuum cylinder
28
blows air from blowing portion
86
on front portion of the product
70
c
(arrows
29
a
), pressing and holding it against first fast delivery tapes
22
a-f
and keeps product away from suction of blowing vacuum cylinder vacuum portion
87
shown by arrows
29
b
. Middle and rear portion of product
70
c
is fully controlled by first and second fastest delivery tapes
22
a-f
and
20
a-f
. Product
70
c
moves with fast delivery tapes speed
101
.
Product
70
d
is fully controlled by delivery tapes
22
a-f
and
20
a-f
and moved horizontally in direction D with fast delivery tapes speed
101
.
FIG. 3H
shows a side cross sectional view of part of the apparatus
10
of
FIG. 1
, in an eighth state, when the first piece of product
70
a
is located at a twentieth position and the second piece of product
70
b
is located at a twenty-first position, the third piece of product
70
c
is located at twenty second position, fourth piece of product
70
d
is located at the twenty-third position, and the fifth piece of product,
70
e
, is located at the twenty-fourth position. The product
70
a
has moved horizontally from the position in
FIG. 3G
to the position in
FIG. 3H
, with slow delivery speed
103
, product
70
a
is controlled by perforated slow delivery tapes
32
a-e
by applying suction (arrows
54
a-e
) through tapes openings by slow delivery tapes vacuum
30
a-e
. Suction of slow delivery tape vacuum, (arrows
54
a-e
show air suction direction) applies to whole area of product
70
a
. It happens to first product only like product
70
a.
The product
70
b
has moved horizontally from the position in
FIG. 3G
to the position in
FIG. 3H
with slow delivery speed
103
, and is controlled by perforated slow delivery tapes
32
a-e
, by applying suction (arrows
54
a-e
) through tape openings by slow delivery tapes vacuums
30
a-e
. Suction of slow delivery tape vacuum applies to overlap portion of product
70
b
only and each next product will be controlled in this same way. Overlap distance
105
shown in
FIG. 3H
can be controlled by variable slow delivery speed
103
(higher speed, bigger overlap).
The product
70
c
has moved horizontally in direction D from the position in
FIG. 3G
to the position in FIG.
3
H. Front and middle portion of the product
70
c
shown in
FIG. 3H
is held by applying suction to the first fast delivery tapes
22
a-f
by fast delivery vacuums
26
a-f
(arrows
27
a-f
). Rear portion of the product
70
c
is pressed down by the rotated set of first pressing brushes
23
a-e
(same set of brushes which pressed product
70
a
) from the set of first pressing brushes discs
24
a-e
against vacuum portion
87
of the blowing vacuum cylinder
28
. In this same state blowing vacuum cylinder
28
sucks down this portion of the product to its own surface of the cylinder vacuum portion
87
as shown by arrows
29
b
. Speed of product
70
c
is subject to suction of fast delivery tape vacuums
26
a-f
shown by arrows
27
a-f
and suction of blowing vacuum cylinder
28
shown by arrows
29
b
. Because suction of blowing vacuum cylinder
28
(arrows
29
b
) is greater than suction of upper fast delivery tapes vacuum
26
a-f
(arrows
27
a-f
), and slow delivery speed
103
is 7-10 times smaller than fast delivery tapes speed
101
, product
70
c
starts to be controlled by blowing vacuum cylinder
28
and brake down speed from fast delivery tapes speed
101
to the slow delivery speed
103
. Front and middle portion of the product
70
c
will slip over low friction surface first fast delivery tapes
22
a-f.
The product
70
d
has moved horizontally in direction D from the position in
FIG. 3G
to the position on FIG.
3
H. Blowing vacuum cylinder
28
blows air from blowing portion
86
on front portion of the product
70
d
(arrows
29
a
) pressing and holding it against first fast delivery tapes
22
a-f
and keeps product away from suction of blowing vacuum cylinder vacuum portion
87
shown by arrows
29
b
. Middle and rear portion of product
70
d
is fully controlled by first and second fast delivery tapes
22
a-f
and
20
a-f
. Product
70
d
moves with fast delivery tapes speed
101
.
Product
70
e
is fully controlled by first and second delivery tapes
22
a-f
and
20
a-f
and moved horizontally in direction D with fast delivery tapes speed
101
.
FIG. 4A
shows a front sectional view of part of the apparatus
10
of
FIG. 1
including the blowing vacuum cylinder
28
and the first pressing brush discs
24
a-e
are looking back along line X—X shown in FIG.
3
B.
FIG. 4A
shows that the set
24
a-e
of the first pressing brush discs including discs
24
a
,
24
b
,
24
c
,
24
d
, and
24
e
. First and second pressing brushes
23
a-e
and
25
a-e
are mounted on each pressing brush disc from
24
a
to
24
e
and not shown in
FIG. 4A
because they are not in active position (see positions of brushes
23
a-e
and
25
a-e
on FIG.
3
B). The first pressing brush discs
24
a-e
with brushes
23
a-e
and
25
a-e
rotate with a brush disc shaft
35
with synchronous speed in relation to all products. The brush disc shaft
35
is mounted to members
72
and
74
by brush disc shaft bearings
76
shown by FIG.
4
A.
Applying suction (arrows
27
a-f
) holds front and middle portions of product
70
a
to first fast delivery tapes
22
a-f
through tapes perforation by fast delivery tapes vacuums
26
a-f
. Blowing vacuum cylinder
28
blows air from blowing portion
86
on the rear portion of product
70
a
(arrows
29
a
), pressing and holding it against first fast delivery tapes
22
a-f
. Both of them (arrows
27
a-f
and arrow
29
a
) keep product
70
a
away from suction of blowing vacuum cylinder vacuum portion
87
(arrows
29
b
) and suction of slow delivery tapes vacuums
30
a-e
(arrows
54
a-e
) not shown on
FIG. 4A
, but shown in FIG.
3
B). Product
70
a
is moved with fast delivery tapes speed
101
. (see
FIG. 3B
) The fast delivery tape vacuums
26
a-f
can be fixed to housing not shown, which may be fixed to members
72
and
74
shown in FIG.
4
A.
FIG. 4B
shows a front sectional view of part of apparatus
10
of
FIG. 1
including the blowing vacuum cylinder
28
and the sets of first and second of pressing brushes
23
a-e
,
25
a-e
from first pressing brush discs
24
a-e
and fast delivery tapes vacuums
26
a-f
looking back along line Y—Y shown in FIG.
3
D. Rotated first set of pressing brushes
23
a-e
press down rear portion of product
70
a
from the pressing brushes discs
24
a-e
against vacuum portion
87
of blowing vacuum cylinder
28
. In this same state, blowing vacuum cylinder
28
sucks down this portion of the product to the surface of the vacuum portion
87
of the cylinder
28
shown by arrows
29
b
on FIG.
4
B. Product
70
a
is now moving with slow delivery speed
103
(shown on FIG.
3
D).
FIG. 4C
shows a front sectional view of part of apparatus
10
of
FIG. 1
including the blowing vacuum cylinder
28
and the first pressing brush discs
24
a-e
, slow delivery tapes vacuums
30
a-e
and fast delivery tape vacuums
26
a-f
looking back along line Z—Z shown in FIG.
3
F. Product
70
a
is pressed down against blowing vacuum cylinder
28
and sucked down to the surface of cylinder first and later sucked down to perforated slow delivery tapes
32
a-e
(arrows
54
a-e
) through tapes' perforations
33
a-e
by slow delivery tapes vacuum
30
a-e
shown in FIG.
4
C. Slow delivery tapes vacuums
30
a-e
on top portion has large long opening to pass vacuuming air. Slow delivery tapes
32
a-e
are perforated and slide over the slow delivery tapes vacuums
30
a-e
and are supported from the bottom to reduce sliding friction by slow delivery tapes supporting rollers
31
a-e
. Product
70
a
is moving horizontally in direction D with slow delivery speed
103
(shown in
FIG. 3
f
). Product
70
b
is held by applying suction to first fast delivery tapes
22
a-f
through perforations in tapes by fast delivery tapes vacuums
26
a-f
shown by arrows
27
a-f
. Fast delivery tapes vacuums
26
a-f
has openings to allow air to come into vacuum chamber. Product
70
b
is moving horizontally in direction D, with fast delivery tape speed
101
(see
FIG. 3F
) and overlaps product
70
a.
Each of slow delivery tapes
32
a-e
is perforated. For example, tape
32
a
has perforations
33
a
. Perforations
33
a
allows air to escape from blowing chamber
28
a
of the blowing vacuum cylinder
28
through the slow delivery tape
32
a
FIG. 4A
, as shown by air flow arrows
29
a
and also allow air to come into chamber
28
b
through the slow delivery tape
32
a
shown on
FIG. 4
b
by air flow arrows
29
b
. This same perforation
33
a
allows air to come into vacuum
30
a
through the slow delivery tape
32
a
as shown in
FIG. 4C
, as shown by air flow arrow
54
a
. Each perforated slow delivery tape of the set
32
a-e
must ride over its corresponding slow delivery tape vacuum of the set
30
a-e
. The perforations such as perforation
33
a-e
allows air to affect the products such as products
70
a
-
70
e.
The brushes
23
a-e
and
25
a-e
are not shown in
FIGS. 4A and 4C
because in the state shown they are not in a pressing position.
FIG. 5A
shows a cross sectional view of vacuum blowing cylinder
28
for use in the embodiment of
FIG. 1
looking along line W—W in FIG.
5
A. Blowing vacuum cylinder
28
is built from blowing vacuum cylinder shaft
84
(is not rotated), two larger size blowing vacuum cylinder bearings
80
and blowing vacuum cylinder roller
81
(rotates with peripheral speed-slow delivery speed
103
).
Blowing vacuum cylinder roller
81
has a groove
132
a-e
for perforated slow delivery tapes
32
a-e
. Inside the grooves
132
a-e
blowing vacuum cylinder roller has peripheral perforations (holes)
128
a-e
to allow air to pass in (arrows
29
b
) or out (arrows
29
a
) through wall of the roller
81
. Each slow delivery tape
32
a
to
32
e
fits into its corresponding grooves
132
a-e
and have own longitudinal perforation (holes)
33
a-e
. To achieve best result of blowing or vacuuming the product
70
a-e
, the peripheral perforation (holes)
128
a-e
of blowing vacuum cylinder roller
81
has to have sink countered holes to easily pass the air through. (See
FIG. 5A
)
Blowing vacuum cylinder rollers
81
have additional sets of peripheral perforations
127
a-f
between the grooves. Surface between the grooves on blowing vacuum cylinder roller
81
has to be coated with rubber, urethane or by other high friction material to achieve best control of products
70
a-e
when sucked and stuck to roller surface. Product
70
is blown out against first fast delivery tapes or suctioned to surface of blowing vacuum cylinder directly through perforation
127
a-f
and non directly through perforation
128
a-e
(through tape perforation
33
a-e
).
FIG. 5B
shows the blowing vacuum cylinder shaft
84
. Shaft is hollow and has two openings from two ends
134
a
and
134
b
. Additionally the shaft
84
has two other openings
17
a
and
17
b
located on a cylindrical surface close to each other and parallel to center line of the shaft
84
. First one with inserted separator
228
creates blowing chamber
28
a
. Second one with inserted separator
228
creates vacuum chamber
28
b
. Separator
228
is used to form the division inside blowing vacuum cylinder shaft and create the blowing chamber
28
a
and vacuum chamber
28
b
as shown in FIG.
5
B.
Air can be blown into opening
134
a
of the blowing chamber
28
a
as shown in FIGS.
5
A and
5
B. The air then would be emitted out from the blowing chamber
28
a
in the direction shown by arrows
29
a
in FIG.
3
A. Air can also be sucked or vacuumed out of the vacuum chamber
28
b
from the opening
134
b
. A suction or vacuum force would then be applied in the direction shown by arrows
29
b
in FIG.
3
A. The separator
228
has walls
228
a
,
228
b
, and
228
c
, shown in
FIG. 5C
which when placed in the blowing vacuum cylinder shaft
84
, separate the blowing chamber
28
a
from the vacuum chamber
28
b.
FIG. 6
shows state of one single opening of perforation
127
a-f
from blowing vacuum cylinder roller
81
in relations to chambers in blowing vacuum cylinder shaft
84
during turning roller with peripheral slow deliver speed
103
.
FIG. 6A
shows no connection between opening
127
and any chambers. Air is not passing through opening. In
FIG. 6B
the blowing vacuum cylinder roller
81
turns clockwise from position on
FIG. 6A
to FIG.
6
B. Opening
127
a-f
is connected to blowing chamber
28
a
and air is blowing out (arrows
29
a
). In
FIG. 6C
blowing vacuum cylinder roller
81
turns clockwise from position in
FIG. 6B
to position in FIG.
6
C. Openings
127
a-f
is connected to vacuum chamber
28
b
and air is sucking in (arrows
29
b
). In
FIG. 6D
, blowing vacuum cylinder roller
81
turns clockwise from position in
FIG. 6C
to position in FIG.
6
D. Openings
127
a-f
are not connected to any vacuum chamber and air is not passing through opening until it reaches the position from
FIG. 6B
again.
FIG. 7A
shows a diagram of airflow near the blowing vacuum cylinder
28
. The arrows
29
a
show the blowing airflow from the blowing chamber
28
a
and correspond to the arrows
29
a
shown in FIG.
3
A. The arrows
29
b
show the vacuum airflow for the vacuum chamber
28
b
and correspond to the arrows
29
b
shown in FIG.
3
A. The arrows
54
a
-
54
b
show vacuum airflow for slow delivery tape vacuums
30
a
and
30
b
shown in FIG.
3
A. For simplicity,
FIG. 7A
does not show air flow from vacuums
30
c
-
30
e
(arrows
54
c-e
).
FIG. 7B
shows portion of blowing vacuum cylinder
28
and slow delivery tapes
32
a
and
32
b
.
FIG. 7B
shows parts of blowing vacuum cylinder including blowing vacuum cylinder shaft
84
with blowing chamber
28
a
and vacuuming chamber
28
b
(shown in FIG.
3
B), two bearings
80
installed on both ends of shaft
84
and blowing vacuum cylinder roller
81
shown partially.
The grooves
132
a
and
132
b
on the surface of blowing vacuum cylinder roller
81
, into which the tapes
32
a
and
32
b
are placed, respectively, are also shown in FIG.
7
B. The grooves
132
c-e
run around the entire circumference of the blowing vacuum cylinder roller
81
, as do the grooves
132
a
and
132
b
, which are shown in
FIG. 5A
but which are not shown in FIG.
7
B. Perforations, like perforation
128
a-e
, also run around the entire circumference of the blowing vacuum cylinder roller
81
within each of the grooves
132
a-e
. Slow delivery tapes
32
c-e
have perforations
33
c-e
, as is shown for tape
32
a
which has perforations
33
a
and tape
32
b
which has perforations
33
b
as shown on FIG.
7
B. Slow delivery tapes
32
a-e
and blowing vacuum cylinder roller
81
moving with slow delivery speed
103
, and perforations
33
a-e
, merge with roller perforation
128
a-e
within roller groves
132
a-e.
Air will be blown out through some of the perforations
128
a-e
and
33
a-e
and air will be sucked in through other perforations
128
a-e
and
33
a-e
, or neither air blowing or suction will occur, depending on the position of the perforations in relation to the blowing chamber
28
a
and the vacuum chamber
28
b
of the blowing vacuum cylinder shaft
84
shown in FIG.
5
A and
FIGS. 6A-D
. Blowing vacuum cylinder roller has additional perforations
127
a-f
located outside and between groves
132
a-e
, shown on FIG.
7
B. These perforations run around the entire circumference of blowing vacuum cylinder roller
81
like perforations
128
a-e
. Perforations
127
a-f
acts in the same manner as perforations
128
a-e
and
33
a-e
described previously except that perforations
127
a-f
have direct contact with the products
70
a-e.
In operation. a printed continuous web
40
of material incoming to shear cutting section
12
. The continuous web
40
is pulled forward by feed roller
44
and pushed between rotary knives cylinder
18
and stationary knife
16
and thereby cut into single items such as single pieces of paper. The continuous web
40
may be cut so those single items having the same size are provided. After cutting, a particular single item is pulled from the rotary knives cylinder
18
into the combination of the set of first fast delivery tapes
22
a-f
and the set of second fast delivery tape
20
a-e.
First fast delivery tapes
22
a-e
and second fast delivery tapes
20
a-e
have the same tape speed
101
which should be greater than the speed of the feeding of the web
40
by the feed roller
44
at the entrance to the rotary knives cylinder
18
. The greater speed of the fast delivery tapes
20
a-f
and
22
a-f
compared to the feed roller
44
, creates some separation between items or cut sheets of paper after they are cut off from the web
40
.
A single item or piece of paper, such as for example item
70
a
in
FIG. 3A
starts to move with the same speed as fast delivery tapes
20
a-f
and
22
a-f
, i.e. with speed
101
, after leaving the cutting area. To be able to prepare stack a second item, such as item
70
b
in
FIG. 3A
, and subsequent items on top of the first item, the speed of the first item
70
a
(and then
70
b
, and then the next item) has to be decelerated to slow delivery speed
103
, so that a newly cut item can overlap a just previously cut item.
The blowing-vacuum cylinder
28
and set of perforated slow delivery tapes
32
a-e
are used to decelerate the speed and overlap of the items
70
a
,
70
b
,
70
c
,
70
d
, and
70
e
and any further items. Perforated slow delivery tapes
32
a-e
are wrapped around the blowing-vacuum cylinder
28
and run with the same adjustable, slow delivery speed
103
which can be seven to ten times slower that than the speed
101
of the fast delivery tapes
20
a-f
and
22
a-f
. The blowing chamber
28
a
as part of the stationary blowing vacuum cylinder shaft
84
in front blows air against the first fast delivery tapes
22
a-f
to increase the contact between an individual item (such as item or sheet
70
a
) and the first fast delivery tapes
22
a-f
as shown by FIG.
3
A. First fast delivery tapes
22
a-f
can be perforated and slide on the bottom surface of fast delivery tape vacuums
26
a-f
. The first fast delivery tape vacuums
26
a-f
apply low air pressure which increases contact between a particular item (such as item
70
a
) and first fast delivery tapes
22
a-f
and keeps a particular item away from blowing vacuum cylinder suction and prevents the item from dropping down to the slow delivery tapes
32
a-e
by the item's own gravity and by the slow delivery vacuum suction (air flow shown by arrows
54
a-c
). When the end of the item, such as item
70
a
, passes blowing vacuum cylinder blowing portion
86
, the set of pressing brushes
23
a-e
pushes the tail of the item
70
a
against the blowing vacuum cylinder vacuum portion
87
as shown by
FIGS. 3C and 3D
. The blowing vacuum cylinder portion
87
sucks the tail of the item
70
a
and sticks it to the surface of cylinder
28
and perforated slow delivery tapes
32
a-e
. From this moment the item
70
a
starts to run with slow delivery tape speed
103
, which is seven to ten times slower than the fast delivery tape speed
101
of the first and second fast delivery tapes
20
a-f
and tapes
22
a-f
, because the sucking force of the vacuum chamber
28
b
of the blowing-vacuum cylinder
28
is much greater than the sucking force of the fast delivery tape vacuums
27
a-f
as shown by
FIGS. 3C and 3D
.
Meanwhile the next item
70
b
still runs with the fast delivery tape speed
101
of tapes
20
a-f
and
22
a-f
and starts to overlap the previous item
70
a
. (see
FIGS. 3C
,
3
D
3
E, and
3
F). The end of the item
70
b
passes the blowing vacuum cylinder blowing portion
86
and is pushed by the second set of pressing brushes
25
a-e
against blowing vacuum cylinder vacuum portion
87
shown in FIG.
3
G. The item
70
b
is then processed in a similar manner to item
70
a.
When single items, such as item
70
a
, leave contact with the blowing vacuum cylinder vacuum portion
87
, the single item is still controlled by perforated slow delivery tapes
32
a-e
. (see FIG.
3
G). Under the perforated slow delivery tapes
32
a-e
are located slow delivery tape vacuums
30
a-e
. Each of the slow delivery tape vacuums
30
a-e
is built as a box and each box contains a supporting roller of rollers
31
a-e
, to support the corresponding perforated slow delivery tape of tapes
32
a-e
, respectively, and to reduce friction between each of the slow delivery tapes
32
a-e
and its corresponding vacuum box of vacuum boxes
30
a-e
. A whole single item or sheet (such as item
70
a
), or tails of single items or sheets (such as of the tails of items
70
b
-
70
e
, in this example) are sucked by the vacuum
30
a-e
through the perforations on the slow delivery tapes
32
a-e
to increase contact and to control their slow speed
103
as shown by
FIGS. 3G and 3H
. This is important especially when the apparatus
10
is designated to run with high speed. At the end of the perforated slow delivery tapes
32
a-e
, the process of sucking is finished and single items of product (such as
70
a
-
70
e
) are free. Blowing air nozzles
34
a-d
push the sheets against stop plates
36
a-f
and start stacking on piling system
38
.
The blowing vacuum cylinder
28
includes blowing vacuum cylinder shaft
84
, 2 large vacuum cylinders bearing
80
and blowing vacuum cylinder roller
81
.
The outer surface of blowing vacuum cylinder roller
81
has grooves, such as grooves
132
a
-
1
32
e
. Inside the grooves
132
a-e
, perforated slow delivery tapes
32
a-e
is installed, respectively. I.e. slow delivery tape
32
a
is installed in combination groove
132
a
. Perforated blowing vacuum cylinder roller
81
and perforated slow delivery tapes
32
a-e
put together form the same even cylindrical shape. Blowing vacuum cylinder roller
81
and slow delivery tapes
32
a-e
are perforated, and have the same pattern, so that air can escape from cylinder
28
or be sucked into the cylinder
28
through the appropriate tape of tapes
32
a-e
. Two large size bearings
80
shown in
FIGS. 5A and 7B
are seated on large size stationary, blowing vacuum cylinder shaft
84
with openings
134
a
and
134
b
on the ends. Blowing Vacuum cylinder shaft
84
has two axial openings
17
a
and
17
b
next to each other. See FIG.
5
B. The first opening
17
a
can be called the front opening and is for blowing air. The second opening
17
b
can be called a rear opening and is vacuuming or sucking in air. Inside of stationary blowing vacuum cylinder shaft
84
we have special shaped septum device
228
(shown in FIG.
5
C), which divides the hollow space of the blowing vacuum cylinder shaft
84
into the blowing chamber
28
a
and the vacuum chamber
28
b
. The blowing chamber
28
a
connects left port
134
a
to the front opening
17
a
for blowing air. The vacuum chamber
28
b
connects the port
134
b
to the rear opening
17
b
for vacuuming air shown in FIG.
5
B. The blowing chamber
28
a
and the vacuum chamber
28
b
are well isolated. The diagram of the air pressure required to control the moving product
70
a-e
is shown in FIG.
7
A.
To blowing air from blowing chamber
28
a
or suck air into vacuum chamber
28
b
though the blowing vacuum cylinder roller perforation
128
a-e
and slow delivery tapes perforation
33
a-e
should not be a problem specially when perforation holes
128
a-e
in the blowing vacuum cylinder roller
81
are sink counter bored as show in FIG.
5
A. This means that for example one hole of the set
128
a
, has a diameter which increases outwards towards the slow delivery tapes for example tape
32
a
. This allows air to spread out and if the tapes
32
a-e
are not perfectly aligned air can still come through the holes, such as holes
128
a-e
and through the tape perforations
33
a-e
, such as set perforations
33
a-e
. To better performance the sets of perforations (openings
128
a-e
and
33
a-e
) can be synchronized, see
FIG. 8
as alternative design. In this manner the slow delivery tape perforation pattern (openings
33
a-e
) has the same pattern like blowing vacuum cylinder roller perforations
128
a-e
shown in FIG.
7
B. In
FIG. 8
the blowing vacuum cylinder roller
81
inside the groves
132
a-e
contains the location pins
88
a-e
with constant circular pith. Slow delivery tapes
32
a-e
contain location holes
82
a
and
82
b
(represent all location holes
82
a-e
) with some pitch distance equal to each pins (of pins
88
a-e
) circumference. When blowing vacuum cylinder roller
81
is rotated with slow delivery speed
103
the slow delivery tape location holes
82
a
and
82
b
(
82
a-e
) match blowing vacuum cylinder roller location pins
88
a
and
88
b
(
88
a-e
) shown on FIG.
8
. In this same time slow delivery tape perforations (openings
33
a
and
33
b
represent all openings
33
a-e
) match blowing vacuum cylinder roller perforations exactly (openings
128
a-e
), see FIG.
7
B.
FIG. 9
shows a side cross sectional view alternative design of the part of the apparatus of
FIG. 1
(alternative to FIGS.
3
A-
3
H). In
FIG. 9
slow delivery tapes
32
a-e
is not running around blowing vacuum cylinder
28
, they are running around additional slow delivery front roller
90
. Blowing vacuum cylinder
28
have own drive (not shown), slow delivery tapes
32
a-e
have drive from slow delivery drive roller
68
. Both blowing vacuum cylinder
28
and slow delivery tapes
32
a-e
have the same slow delivery speed
103
see FIG.
9
. Advantage of this alternative is more effective blowing (arrows
29
a
) and suction (arrows
29
b
) of blowing vacuum cylinder
28
because blowing and suction are applying direct to product
70
a-e
, not through slow delivery tapes
32
a-e
. Disadvantage of this alternative is requirement install additional drive to drive blowing vacuum cylinder
28
with slow delivery speed
103
.
FIG. 10
shows a side cross sectional view of an alternative embodiment of the present invention. In
FIG. 10
, vacuum cylinder
328
is comprised of vacuum cylinder shaft
384
, two large size bearings (not shown) and vacuum cylinder roller
381
similar to blowing vacuum cylinder roller
81
from
FIGS. 3A-3H
. Vacuum cylinder shaft
384
has only vacuum chamber
328
b
to which sucks air into vacuum cylinder
328
through cylinder roller
381
perforations (arrows
329
b
)
FIG. 10
also shows slow delivery tapes
332
a-e
which are wrapped around the vacuum cylinder
328
, and they are similar to slow delivery tapes
32
a-e
in
FIGS. 3A-3H
, Vacuum portion
387
of vacuum cylinder
328
sucks air into cylinder
328
as vacuum portion
87
of blowing vacuum cylinder
28
does in
FIGS. 3A-3H
. However, vacuum cylinder
328
doesn't blow air from the cylinder like blowing vacuum cylinder
28
from
FIGS. 3A-3H
. The vacuum cylinder
328
in this state needs only one port for suction and doesn't need any septum device inside the cylinder shaft
384
like blowing vacuum cylinder
28
included. This alternative embodiment is simpler than the embodiment shown in
FIGS. 3A-3H
and typically works successfully with a rigid product
70
.
Claims
- 1. An apparatus for moving items comprised of:a cylinder; wherein the cylinder is comprised of a vacuum chamber and a blowing chamber; wherein the cylinder is comprised of a first set of perforations which allow air from the blowing chamber to be blown out of the first set of perforations; wherein the cylinder is comprised of a second set of perforations, which allow air to be sucked into the vacuum chamber through the second set of perforations; and wherein a piece of paper can pass over the cylinder during a times period and the apparatus is adapted so that during substantially the entire time period the blowing chamber blows air in a first substantially fixed direction out from the blowing chamber, and the vacuum chamber sucks air in a second substantially fixed direction towards the vacuum chamber.
- 2. The apparatus of claim 1 whereinthe first set and the second set of perforations are the same.
- 3. The apparatus of claim 1 whereinthe first set of perforations is different from the second set of perforations and the first set of perforations is adjacent to the second set of perforations.
- 4. The apparatus of claim 1 whereinthe first substantially fixed direction and the second substantially fixed direction are substantially opposite one another.
- 5. The apparatus of claim 1 whereinthe blowing chamber and the vacuum chamber are adapted to be fixed during substantially the entire time period.
- 6. An apparatus for moving items comprised of:a cylinder; wherein the cylinder is comprised of a vacuum chamber and a blowing chamber; wherein the cylinder is comprised of a first set of perforations which allow air from the blowing chamber to be blown out of the first set of perforations; wherein the cylinder is comprised of a second set of perforations, which allow air to be sucked into the vacuum chamber through the second set of perforations; and further comprised of: a first slow delivery tape which is wrapped around the cylinder, and which can transport items.
- 7. The apparatus of claim 3 further comprised of:a plurality of first fast delivery tape rollers; a first fast delivery tape which is wrapped around the plurality of first fast delivery tape rollers; and wherein the first fast delivery tape lies above the first slow delivery tape.
- 8. The apparatus of claim 7 further comprised ofa first brush disc ratably connected to a housing; the first brush disc including a first brush wherein a first piece of product can be pushed down by the first brush of the first brush disc to move the first piece of product closer towards the cylinder.
- 9. The apparatus of claim 8 further comprised ofa plurality of second fast delivery tape rollers; a second fast delivery tape which is wrapped around the plurality of second fast delivery tape rollers; and wherein at least a portion of the second fast delivery tape lies below a portion of the first fast delivery tape; and wherein at least a portion of the first fast delivery tape, and a portion of the second fast delivery tape act together to move items.
- 10. The apparatus of claim 9 further wherein:the items are pieces of paper, which come from a continuous web of paper and further comprising a cutting device, which cuts pieces of paper from the continuous web of paper.
- 11. The apparatus of claim 10 further comprised ofa slow delivery tape vacuum wherein the slow delivery tape moves over the slow delivery tape vacuum in order to transport an item; wherein the slow delivery tape has a plurality of perforations and the slow delivery tape vacuum has an opening; and wherein the slow delivery tape vacuum draws air in through the perforations in the slow delivery tape and through the opening in the slow delivery tapes vacuum.
- 12. The apparatus of claim 11 whereinthe slow delivery tape vacuum has a supporting roller, on which the slow delivery tape moves.
- 13. The apparatus of claim 12 further comprised ofa fast delivery tape vacuum wherein the first fast delivery tape moves under the fast delivery tape vacuum in order to transport an item; wherein the first fast delivery tape has a plurality of perforations and the fast delivery tape vacuum has a plurality of perforations; and wherein the fast delivery tape vacuum draws air in through the perforations in the first fast delivery tape and through the perforations in the fast delivery tapes vacuum.
- 14. The apparatus of claim 13 wherein:a first piece of paper is cut from the continuous web of paper by the cutting device the first piece of paper is moved in a first direction by the first and second fast delivery tapes; a portion of the first piece of paper is pushed upwards by the blowing chamber of the cylinder; a portion of the first piece of paper is pushed downwards by a first brush of the first brush disc and sucked downwards by the vacuum chamber of the cylinder; and the first piece of paper is further moved in the first direction by the slow delivery tape.
- 15. The apparatus of claim 14 wherein:a second piece of paper is cut from the continuous web of paper by the cutting device the second piece of paper is moved in a first direction by the first and second fast delivery tapes; a portion of the second piece of paper is pushed upwards by the blowing chamber of the cylinder; a portion of the second piece of paper is pushed downwards by a second brush of the second brush disc and sucked downwards by the vacuum chamber of the cylinder; the second piece of paper is further moved in the first direction by the slow delivery tape; and the second piece of paper is moved so that it gradually overlaps and eventually is stacked on top of the first piece of paper.
- 16. The apparatus of claim 13 whereinthe fast delivery tape vacuum supplies a varying amount of suction to the fast delivery tape.
- 17. The apparatus of claim 6 further comprisinga plurality of slow delivery tape supporting rollers which support the first slow delivery tape and allow the first slow delivery tape to move.
- 18. The apparatus of claim 6 whereinthe first slow delivery tape is comprised of a plurality of perforations; and wherein each perforation of the first set of the plurality of perforations of the cylinder has a diameter which increases towards the first slow delivery tape so that air blow cut the first set of perforations starts from a narrow opening for each perforation of the first set with a smaller diameter and is blown out a wider opening with a larger diameter for each perforation for the first set.
- 19. The apparatus of claim 6 whereinthe first slow delivery tape is comprised of a plurality of perforations; the cylinder is comprised of at least one location pin and wherein at least one of the perforations in the first slow delivery tape fits over a location pin of the cylinder.
- 20. The apparatus of claim 19 whereinthe first slow delivery tape is comprised of a plurality of perforations; the cylinder is comprised of a plurality of location pins and wherein a plurality of perforations in the first slow delivery tape fit over a corresponding plurality of location pins of the cylinder.
- 21. An apparatus for moving items comprised of:a cylinder; wherein the cylinder is comprised of a vacuum chamber, wherein the cylinder is comprised of a first set of perforations, which allow air to be sucked into the vacuum chamber through the first set of perforations; and further comprised of: a first slow delivery tape which is wrapped around the cylinder, and which can transport items.
- 22. A method comprising the step ofpassing a piece of paper over a cylinder during a time period, the cylinder comprised of a vacuum chamber and a blowing chamber; causing the blowing chamber to blow air in a first substantially fixed direction out from the blowing chamber during substantially the entire time period; and causing the vacuum chamber to suck air in a second substantially fixed direction towards the vacuum chamber during substantially the entire time period.
US Referenced Citations (17)