Information
-
Patent Grant
-
6805765
-
Patent Number
6,805,765
-
Date Filed
Wednesday, September 24, 200320 years ago
-
Date Issued
Tuesday, October 19, 200419 years ago
-
Inventors
-
Original Assignees
-
Examiners
Agents
-
CPC
-
US Classifications
Field of Search
US
- 156 159
- 156 187
- 156 256
- 156 502
- 156 504
- 156 517
- 242 551
- 242 553
- 242 5553
- 242 5554
- 242 5561
- 428 417
- 428 418
- 428 57
- 428 343
-
International Classifications
-
Abstract
A roll (22) is rotatably mounted in a slide (17) which is mounted so as to be perpendicularly displaceable in a carriage (11) which can be moved above a paper reel (8) transversely to its axis. The carriage (11) can be moved in a raisable and lowerable boom (4). The carriage also carries a transverse slide which can be moved along the axis and has a cutting device and an adhesive bonding device. The roll (22) is placed with a cutting bar on the uppermost generating line of the paper reel (8) and rolled thereon and the uppermost layer of the paper reel (8) held by suction and lifted off by rolling the roll (22) in the opposite direction beyond the starting position. After an end section has been cut off along the cutting bar by means of the cutting device and an adhesive tape has been applied to the paper reel in the region of the uppermost generating line, the roll (22) is rolled back to the starting position and that section of the paper web which is adjacent to the edge of the web end is pressed onto a part of the outer surface of the adhesive tape.
Description
FIELD OF THE INVENTION
The invention relates to a method for the preparation of a paper reel for flying reel change according to the precharacterizing clause of claim
1
and an apparatus for carrying out the method according to the precharacterizing clause of claim
7
. Such methods and apparatuses are used in reel cellars of printing works.
PRIOR ART
It is known that paper reels can be prepared for flying reel change by using an adhesive tape which joins the edge of the web end to the next inner layer and at the same time has, on the outer surface of the paper reel, an adhesive surface, for adhesive bonding to the residual reel, cf. for example DE-A-43 39 309. Recently, such adhesive tapes have also become available (cf. for example so-called Flying Splice System 551 from ASS-Etikett GmbH, Flying Splice Print Line tesa 51100 from Tesa AG or DE-A-196 32 689), which consist of an outer tape and an inner tape which are arranged one on top of the other and are connected in a separable manner. The inner tape is provided with an inner adhesive surface for joining to the next inner layer whereas the outer tape has an outer adhesive surface for joining to the web end and the residual roll.
For mounting conventional tapes, methods have been proposed in which a web section is unwound from the paper reel, the adhesive tape is mounted on the edge of the web end on the outside of the paper web and the latter is then rolled up again and the edge of the web end is joined to the next lower layer by means of projecting adhesive labels simultaneously mounted there, and corresponding apparatuses (cf. DE-C-195 40 689). However, they cannot be directly adopted since the adhesive tape is mounted there on the outside of the paper web, which is not possible in the case of adhesive tapes of the novel type. This also applies to similar cases where the joining of the edge of the web end to the next lower layer is performed by means of a separate so-called butterfly, while, for producing the joint with the paper web of the residual reel, a double-sided adhesive tape is mounted on the outside of the paper web, just before the edge of the web end (DE-C-39 18 552).
DE-A-38 34 334 discloses a method of the generic type and a corresponding apparatus, which is suitable for the use of adhesive tapes of the novel type described above. After a web section has been unwound so that a part thereof hangs over an oblique support surface mounted below the reel, an edge of the web end is produced by cutting off an end section along a cutting line running over the support surface, and the adhesive tape is then pressed there onto the inside of the outermost layer and the web is rolled up again. In this procedure, the position of the unrolled web section is not constantly under control, so that slight lateral shifts or waves form and may interfere with the procedure and cause web winding errors. Moreover, the paper reel must be rotated, i.e. must be rotatably mounted, which considerably increases the complexity of the apparatus.
A method which is similar in the basic principles and the corresponding apparatus, which are described in EP-A-1 041 025, ensure the control of the unrolled web section by a procedure in which the inside thereof is first held in an adhesion area by means of suction orifices and the end section is cut off for the preparation of the edge of the web end and then the outside is held by a second adhesion area while the adhesive tape is pressed onto the inside along the edge of the web end. However, this requires a considerably complicated design, especially since here too the reel has to be rotatably mounted.
SUMMARY OF THE INVENTION
It is the object of the invention to provide a method in which the position of the paper web is always under control. Moreover, it should be capable of being carried out with little effort. This object is achieved by the features in the characterizing clause of claim
1
. The invention provides a method in which the unrolled web section, which is subsequently placed again on the reel, never hangs freely but is always under tension. Thus, the position of the replaced web section is exactly defined and free of errors. In addition, rotation of the reel is not required. It therefore need not be clamped.
It is a further object of the invention to provide a suitable apparatus for carrying out the method according to the invention. This object is achieved by the features in the characterizing clause of claim
7
. The apparatus according to the invention enables the method to be carried out reliably and cleanly. It can moreover be produced relatively simply and with moderate effort.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is explained in more detail below with reference to figures which show only one embodiment.
FIG. 1
schematically shows a perspective view of an apparatus according to the invention for carrying out the method according to the invention, with a paper reel,
FIG. 2
schematically shows a front view of the apparatus according to
FIG. 1
,
FIG. 3
schematically shows a side view of the apparatus according to
FIG. 1
,
FIG. 4
schematically shows a side view corresponding to
FIG. 3
, certain parts having been omitted,
FIG. 5
shows a front view of a component of the apparatus according to
FIG. 1
,
FIG. 6
shows a cross-section through another component of the apparatus according to
FIG. 1
,
FIG. 7
shows a perspective view of a part of the component of FIG.
5
and
FIG. 8
a
-
l
schematically show the sequence of a method according to the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The apparatus according to the invention has (
FIG. 1
) a stand
1
comprising two perpendicular columns
2
a,b
which are connected by a tie-beam
3
. A frame-like boom
4
having two side beams
5
a,b
and two crossbeams
6
,
7
is mounted so as to be perpendicularly displaceable on the columns
2
a,b
, said boom projecting forwards over a paper reel
8
whose axis is parallel to the tie-beam
3
and which rests on a transport carriage
9
. The transport carriage
9
is displaceable or drivable along a sunk rail
10
running past the apparatus.
On the boom
4
is a carriage
11
comprising a horizontal frame having two tie-beams
12
,
13
and downward-projecting side parts
14
a,b
mounted so as to be longitudinally displaceable, i.e. displaceable transversely to the tie-beam
3
. In each case guides
15
,
16
(cf. also
FIG. 4
, where some of the side parts
14
a,b
have been omitted) on which a slide
17
is mounted so as to be perpendicularly displaceable are provided on the insides of the side parts
14
a,b
. Said slide has lateral frame parts
18
a,b
which are connected by guide rods
19
,
20
(
FIG. 5
) parallel to the tie-beams
12
,
13
and arranged perpendicularly one on top of the other. Before the guide rods
19
,
20
, bearings for rotatable mounting of the ends of an axle
21
which is parallel to the guide rod and carries a coaxial roll
22
are mounted in the frame parts
18
a,b
(
FIG. 1-4
, not shown in FIG.
5
).
A transverse slide
23
is displaceably mounted on the guide rods
19
,
20
(
FIG. 5
) in such a way that it can be moved between the frame parts
18
a,b
. A cutting device
25
and an adhesive bonding device
26
are mounted on a support plate
24
of said transverse slide. Above the transverse slide
23
, a take-off device
27
(
FIG. 2
) is anchored on the slide
17
so as to be tiltable by means of a pneumatic cylinder and has two shafts
28
a,b
which are parallel to the tie-beams and over which a plurality of parallel elastic belts
29
run over the length of said shafts, and one of which shafts is drivable. For reducing the effective weight of the slide
17
, the latter can be supported by means of gas springs on the carriage
11
.
The perpendicular displacement of the boom
4
is effected (
FIG. 2
) by means of a shaft
30
which is mounted in the tie-beam
3
and can be driven by a motor
31
and, via angular gears
32
a,b
, drives lifting spindles
33
a,b
which are mounted on the columns
2
a,b
and engage corresponding threaded bushes
34
a,b
on the boom
4
. The movement of the carriage
11
is (cf.
FIG. 4
) produced by a motor
35
which is fastened to said carriage and drives pinions
36
which engage toothed racks
37
fastened to the side beams
5
a
and
5
b
of the boom
4
.
The movement of the transverse slide
23
along the guide rods
19
,
20
is produced by a further motor
38
(FIG.
3
), in particular via a pinion
39
(FIG.
5
), over which a closed toothed belt
40
runs, whose lower side is connected to the transverse slide
23
. The roll
22
can (
FIG. 4
) be driven via a toothed belt
41
by a motor
42
fastened to the slide
17
. The positions of the boom
4
, of the carriage
11
, of the transverse slide
23
and of the bracket of the roll
22
are each monitored by corresponding transducers and transmitted to a control unit in a switch box
43
fastened to the frame
1
(shown only in FIG.
1
).
The roll
22
has (
FIG. 6
) a lateral surface
44
which has the shape of a cylindrical sector which is coaxial with the axle
21
and extends over its entire length and about two thirds of the full angle. Its outside forms a support surface in which a first cutting bar
45
, a first suction bar
46
, a second cutting bar
47
and a second suction bar
48
are sunk. Said bars each extend along a generating line over the entire length of the roll
22
and follow one another directly azimuthally. The cutting bars
45
,
47
are each in the form of a profile which has, on the outside, a shallow groove in which a cutting bar
50
, preferably comprising a plastic having low adhesion and friction values or comprising metal, possibly coated with a plastic of the type described, is sunk. The suction bars
46
,
48
are each in the form of a profile
51
having an outward-facing groove which is divided into a plurality of chambers and is covered by a strip
52
of perforated sheet metal, the outside of which forms a suction zone. From the inside, at least one suction line
53
opens into the groove, via which air can be drawn through a pump, which is not shown, and reduced pressure can be generated.
A row of suction cups
54
, each of which are connected to the pump via suction lines
55
and likewise for generating reduced pressure, are arranged on the front of the roll
22
, azimuthally about 75° away from the first cutting bar
45
, along a generating line. Each of the suction cups
54
has a valve which can be operated by means of a tappet
56
and is open only when said tappet is slightly pushed back by contact with an object. A row of needles
58
which are sunk but mounted in pneumatic cylinders
57
so as to be displaceable over the support surface is arranged shortly before the row of suction cups
54
. Said needles are inclined slightly towards the row of suction cups
54
.
The transverse slide
23
has (
FIG. 7
) a baseplate
59
which is displaceably mounted directly on the guide rods
19
,
20
and on which the support plate
24
is suspended in such a way that it is vertically displaceable to a limited extent. Its vertical position can be adjusted by a pneumatic cylinder.
The cutting device
25
projects from the baseplate
59
of the transverse slide
23
through a slot in the support plate
24
towards the roll
22
. Said device comprises a pneumatic cylinder
60
which carries a housing
61
in which a cutting disc
62
is rotatably mounted. The housing
61
can be advanced towards the roll
22
by means of the pneumatic cylinder
60
until the cutting disc
62
, which is exactly at the height of the roll axis, just touches the first cutting bar
45
or the second cutting bar
47
, depending on the angular position of the roll
22
.
The adhesive bonding device
26
consists of a plurality of parts which are fastened or mounted on that side of the support plate
24
of the transverse slide
23
which faces the roll
22
. A rotatably mounted, lightly braked storage roll
63
carries an adhesive tape
64
which is covered by a top tape
65
which is taken off completely or partly at a deflection roller
66
and is rolled onto a winding roller
67
driven with a slip. This is monitored by an optical tape sensor
68
. The tape stock on the storage roller
63
is monitored by a likewise optical stock sensor
69
. The adhesive tape
64
runs on through a guide
70
, where it is clamped between a drive roller
71
and an idling counter roller
72
of a feed device. The drive roller
71
is mounted in a holder
73
which is pressed by a pneumatic cylinder
74
against the counter roller
72
. For manually drawing in a new adhesive tape, the holder
73
is drawn back by the pneumatic cylinder
74
.
The adhesive tape
64
continues through scissors
75
and under a first pressure roller
76
and a second pressure roller
77
which follows said first pressure roller and is pressed against the roller
8
. A feed sensor
78
monitors whether the adhesive tape
64
has been advanced at least up to just before the first pressure roller
76
. The pressure rollers
76
,
77
are suspended at the same height in the same manner from the support plate
24
, in each case from a bearing at the lower end of a perpendicularly displaceable ram
79
which is pressed by a pressure spring (not shown) downwards against the paper reel
8
.
An optical length sensor
80
(
FIG. 5
) which responds as soon as it is present above the paper reel
8
is arranged on the left of the support plate
24
. Similarly, a likewise optical diameter sensor
81
(
FIG. 1
) which detects the edge of the end face of the paper reel
8
when the boom
4
is lowered is arranged laterally on the side part
14
a
of the carriage
11
. The signals of all sensors are fed to the control unit in the switch box
43
.
The Preparation of a Paper Reel Takes Place as Follows:
The paper reel
8
is moved on the transport carriage
9
below the boom
4
. The end of the paper web is on the side facing the stand
1
. The paper web goes so far beyond the uppermost generating line of the paper reel
8
that the outermost layer does not slide back under its own weight. The carriage
11
is moved to a starting position in which the axle
21
of the roll
22
is exactly above the middle of the rail
10
and hence the uppermost generating line of the paper reel
8
. The roll
22
is then rotated by the motor
42
into a zero position in which a cutting line coinciding with the central line of the second cutting bar
47
is at the bottom, i.e. is exactly opposite the uppermost generating line of the paper reel
8
(
FIG. 8
a
).
The boom
4
is now lowered by means of the motor
31
until either the diameter sensor
80
responds or the boom
4
has reached a certain height without said sensor having responded. In the last-mentioned case, in which the paper reel
8
has a diameter which is smaller than a certain limit (small reel) is discussed further below. In the first-mentioned case, in which the diameter of the paper reel
8
is larger than the limit (large reel), the boom
4
is further lowered at a reduced speed by a fixed distance after the diameter sensor
80
has responded, and the roll
22
is placed on the paper reel
8
so that the central line of the second cutting bar
47
touches the uppermost generating line. Since the boom
4
with the carriage
11
is lowered slightly further after the roll
22
has been placed on top, the slide
17
is pushed upwards out of its lower limiting position so that it acquires latitude in the downward direction in the carriage
11
. Finally, the roll
22
is uncoupled from the motor
42
(
FIG. 8
b
).
The carriage
11
now advances further, i.e. it moves towards the stand
1
along a horizontal feed direction. Since the roll
22
is freely rotatable, the lateral surface
44
thereof is rolled from its starting position shown in
FIG. 8
b
, in the direction opposite to the unwinding direction of the paper reel
8
, on said paper reel until the suction cups
54
come into contact with the paper reel
8
. The slide
17
moves slightly downwards. The carriage
11
is stopped when the roll
22
has reached an angular position calculated beforehand by the control unit from the known diameter of said roll and the determined diameter of the paper reel
8
. Reduced pressure is now applied to the suction cups
54
, provided that their valves are opened by contact of the tappets
56
with the paper reel
8
, and the outermost layer of the paper web is held by suction (
FIG. 8
c
).
Subsequently, the carriage
11
is moved beyond its starting position away from the stand
1
, the lateral surface
44
now being rolled on the paper reel
8
in the unwinding direction of the paper web. After a short travel distance, nails
58
are extended and pierce the outermost layer of the paper web and thus reliably hold the latter on the lateral surface
44
(
FIG. 8
d
). That part of the paper web which projects beyond the row of suction cups
54
is drawn, by tilting of the take-off device
27
towards the the roll
22
and movement of the belt
29
in the direction of the arrow, between said belt and the roll
22
(
FIG. 8
e
).
During the further rolling movement, the first suction bar
46
and the second suction bar
48
are also switched on when the roll
22
has reached those precalculated angular positions in which they come into contact with the outermost layer of the paper reel
8
. The carriage is stopped when the second cutting bar
47
points towards the transverse slide
23
, i.e. after rotation of the roll through exactly 90° relative to its starting position. For cutting off an end section and producing an edge of the web end, the paper web is then cut by means of the cutting device
25
. For this purpose, the housing
61
is advanced by means of the pneumatic cylinder
60
until the edge of the cutting disc
62
just reaches the second cutting bar
47
at the cutting line. The transverse slide
23
is in a base position on the right of the carriage
11
. The transverse slide
23
is now moved to the left side and an edge of the web end is produced by cutting off an end section
82
of the paper web (
FIG. 8
f
).
During the same movement or after the transverse slide
23
has returned to the base position, the adhesive tape
64
is applied to the next inner layer of the paper web in the region of the uppermost generating line by means of the adhesive bonding device
26
, while a section of the outermost layer which is adjacent to the edge of the web end is held against the lateral surface
44
by the second suction bar
48
. For this purpose, the adhesive tape
64
is (also see
FIG. 7
) advanced by means of the feed device until the feed sensor
78
detects that it has reached the first pressure roller
76
and the transverse slide
23
is moved to the left from the base position with raised support plate
24
, the length sensor
80
detecting the beginning of the reel until the first pressure roller
76
is above a point which is a certain distance—usually a few millimeters—away from the beginning of the reel.
The support plate
24
is then lowered so that the pressure roller
76
rests on the paper reel
8
and is pressed upwards against the force of the pressure spring. The movement is terminated when the force has reached a certain value, which can be determined, for example, by monitoring the deflection of the ram of the pressure roller
76
by means of a further optical sensor. The adhesive tape
64
is pressed against the paper reel
8
by the pressure roller
76
(
FIG. 8
g
) so that the underside of the inner tape adhesively bonds thereto. Shortly after the length sensor
80
has detected the end of the paper reel
8
, the transverse slide
23
is stopped and the adhesive tape
64
is cut by means of the scissors
75
. The transverse slide
23
then continues its movement until the remainder of the cut-off adhesive tape
64
has been pressed onto the paper reel
8
by the pressure rollers
76
,
77
. Finally, the support plate
24
is raised again and the transverse line
23
is moved back to the starting position.
The cut-off end section
82
of the paper web is now drawn over the roll
22
by corresponding movement of the belt
29
(
FIG. 8
h
) and is removed via a subsequent chute, which is not shown. Finally, the carriage
11
is advanced again to its starting position and the lateral surface
44
is rolled back on the paper reel
8
exactly to its starting position in which the cutting line coincides with the uppermost generating line of the paper reel
8
, the second suction bar
48
being switched off as soon as it begins to be released from the paper web.
Consequently, a strip of the outermost layer of the paper reel
8
which is adjacent to the edge
83
of the web end is pressed onto an adhesive strip on the top of the outer tape of the adhesive tape
64
, which adhesive strip is located behind the uppermost generating line, and thus adhesively bonded to the next inner layer, while an edge strip located before the uppermost generating line remains free and is subsequently available for adhesive bonding with the residual reel (
FIG. 8
i
). During the application of the adhesive tape
64
, only that part-strip of the top tape
65
which covers the adhesive strip of the outer tape can be removed so that the edge strip remains covered by the complementary part-strip, or the entire top tape
65
can be removed so that the edge strip is free and the adhesion point is “crisp”. In the former case, the remaining part-strip of the top tape must be removed manually before the paper reel
8
is used in the reel stand.
Finally, the boom
4
is raised and the roll
22
is lifted off the paper reel
8
and the adhesive tape
64
. The preparation of the paper reel
8
is thus complete (
FIG. 8
j
).
If the paper reel is to be driven in a reel stand by means of belts, it is possible to provide gaps in the applied adhesive tape
64
by cutting the same at predetermined points of the travel distance of the transverse slide
23
and raising the support plate
24
with the adhesive bonding device
26
after pressing on of the cut-away remainder and thus moving said support plate over the section of the generating line which is to remain free, whereupon the adhesive tape is fed again by the feed device to below the first pressure roller
76
and the support plate
24
is lowered again.
If the paper reel
8
is a small reel, i.e. if the boom
4
reaches a certain height on lowering without the diameter sensor
80
having responded, the roll
22
is rotated to a new starting position in which the first cutting bar
45
points downwards (
FIG. 8
k
) and then lowered again initially rapidly and, after the diameter sensor
81
has responded, slowly until the first cutting bar
45
touches the uppermost generating line of the paper reel
8
(
FIG. 8
l
). The further procedure takes place in the same manner as that described for large reels, except that the first cutting bar
45
takes the place of the second cutting bar
47
.
List of Reference Symbols
1
Stand
2
a,b
Columns
3
Tie-beam
4
Boom
5
a,b
Side beams
6
,
7
Crossbeams
8
Paper reel
9
Transport carriage
10
Rail
11
Carriage
12
,
13
Tie-beams
14
a,b
Side parts
15
,
16
Guides
17
Slide
18
a,b
Frame parts
19
,
20
Guide rods
21
Axle
22
Roll
23
Transverse slide
24
Support plate
25
Cutting device
26
Adhesive bonding device
27
,
28
Take-off device
29
Belt
30
Shaft
31
Motor
32
a,b
Angular gears
33
a,b
Lifting spindles
34
a,b
Threaded bushes
35
Motor
36
Pinion
37
Toothed rack
38
Motor
39
Pinion
40
Toothed belt
41
Toothed belt
42
Motor
43
Switch box
44
Lateral surface
45
First cutting bar
46
First suction bar
47
Second cutting bar
48
Second suction bar
49
Profile
50
Cutting strip
51
Profile
52
Strip
53
Suction line
54
Suction cup
55
Suction line
56
Tappet
57
Pneumatic cylinder
58
Needle
59
Baseplate
60
Pneumatic cylinder
61
Housing
62
Cutting disc
63
Storage roller
64
Adhesive tape
65
Top tape
66
Deflection roller
67
Winding roller
68
Tape sensor
69
Stock sensor
70
Guide
71
Drive roller
72
Counter roller
73
Holder
74
Pneumatic cylinder
75
Scissors
76
First pressure roller
77
Second pressure roller
78
Feed sensor
79
Ram
80
Length sensor
81
Diameter sensor
82
End section
83
Edge of web end
Claims
- 1. Method for the preparation of a paper reel (8) having a wound paper web for flying reel change by applying an adhesive tape (64) along an edge (83) of the web end, which has at least one outer tape having an outer adhesive surface for producing the joint between the web end and a paper web of a residual roll, and an inner tape which can be separated therefrom and has an inner adhesive surface for holding the web end on the next inner layer, by lifting of the outermost layer from the next inner layer, producing the edge (83) of the web end by cutting off an end section (82) from the outermost layer, applying the adhesive tape (64) and replacing the outermost layer on the next inner layer, a part of the outermost layer which is adjacent to the edge (83) of the web end being adhesively bonded to an adhesive strip of the outer adhesive surface while an edge strip adjacent thereto remains free and the inner adhesive surface adhesively bonds to the next inner layer, characterized in that, while the paper reel (8) remains otherwise unmoved, the lifting of the outermost layer is effected by placing a support surface, whose cross-section perpendicular to the axial direction of the paper reel (8) is substantially constant over its width, against the paper reel (8) and establishing a starting position in which a cutting line of the support surface, which cutting line is parallel to the axis of the paper reel (8), is in contact with a generating line of the paper reel (8), and the support surface is rolled, while the outermost layer is held resting on it, in the unwinding direction thereof on the paper reel (8), cutting off the end section (82) along the cutting line and applying the adhesive tape (64) to the next inner layer in such a way that the boundary between the adhesive strip and the edge strip coincides with the generating line, whereupon the support surface is rolled back to the starting position for replacement of the outermost layer.
- 2. Method according to claim 1, characterized in that the support surface is placed with the cutting line on the paper reel (8).
- 3. Method according to claim 1, characterized in that the axis of the paper reel (8) is kept horizontal and the support surface is placed on the uppermost generating line.
- 4. Method according to claim 1, characterized in that, before it is rolled in the unwinding direction, the support surface is first rolled a distance in the opposite direction on the paper reel (8) and the outermost layer is held on the support surface from the beginning of rolling in the unwinding direction.
- 5. Method according to claim 1, characterized in that the holding of the outermost layer on the support surface is effected by reduced pressure.
- 6. Method according to claim 1, characterized in that, after the end section (82) has been cut off, said end section is removed.
- 7. Apparatus for carrying out the method according to claim 1, comprising a support surface having at least one cutting line and a cutting device (25) movable along said cutting line over the support surface, characterized in that the support surface is formed by a section of a lateral surface (44) of a roll (22) while the cutting device (25) can be moved over the lateral surface (44) along a cutting line which follows a generating line of the lateral surface (44), and the roll (22) is mounted, so as to be rotatable about an axle (21) parallel to the axial direction of the paper reel (8), in a holder which is displaceable in a displacement direction transverse to said axial direction, so that the axle (21) is freely displaceable to a limited extent transverse to the axial direction and to the displacement direction.
- 8. Apparatus according to claim 7, characterized in that the holder is formed by a carriage (11) displaceable in the displacement direction, and the axle (21) is mounted so as to be rotatable and nondisplaceable in a slide (17) which is mounted so as to be displaceable transversely to the axle (21) and transversely to the displacement direction of the carriage (11) in the latter.
- 9. Apparatus according to claim 8, characterized in that the carriage (11) is mounted so as to be displaceable in a frame which is displaceable transversely to the axle (21) and to the displacement direction.
- 10. Apparatus according to claim 8, characterized in that the cutting device (25) can be moved in the slide (17) parallel to the axle (21).
- 11. Apparatus according to claim 10, characterized in that the cutting device (25) can be fed towards the roll (22).
- 12. Apparatus according to claim 10, characterized in that the cutting device (25) is arranged, so as to be displaceable towards the axle (21) and withdrawable therefrom but nondisplaceable transverse thereto, on a transverse slide (23) which can be moved-parallel to the axle (21) in the slide (17) and which also carries an adhesive device (26).
- 13. Apparatus according to claim 12, characterized in that the adhesive device (26) is arranged on the transverse slide (23) so as to be displaceable transversely to the axle (21) and to the displacement direction.
- 14. Apparatus according to claim 7, characterized in that the axial direction of the paper reel (8) is horizontal and the holder is displaceable horizontally above said reel, in such a way that the end positions of the axle (21) are on different sides of the uppermost generating line of the paper reel (8).
- 15. Apparatus according to claim 14, characterized in that the axle (21) is vertically displaceable in the holder.
- 16. Apparatus according to claim 7, characterized in that the roll (22) has at least one cutting bar (45, 47) following a generating line, sunk into the support surface and preferably having a plastics surface, over which the cutting line runs.
- 17. Apparatus according to claim 16, characterized in that it has at least two such cutting bars (45, 47).
- 18. Apparatus according to claim 7, characterized in that the roll (22) has at least one suction zone substantially extending over the width of the support surface and provided with suction orifices.
- 19. Apparatus according to claim 7, characterized in that the lateral surface (44) substantially corresponds to a lateral surface sector of a cylinder whose axis coincides with the axis (21) of the roll (22).
- 20. Apparatus according to claim 7, characterized in that it has a take-off device (27) for removing the end section, which device comprises a plurality of revolving belts (29) which are distributed over the length of the roll (22) and can be pressed against the lateral surface (44).
Priority Claims (1)
Number |
Date |
Country |
Kind |
02022893 |
Oct 2002 |
EP |
|
US Referenced Citations (8)
Foreign Referenced Citations (3)
Number |
Date |
Country |
42 33 521 |
Apr 1994 |
DE |
1 041 025 |
Oct 2000 |
EP |
WO 02102694 |
Dec 2002 |
WO |