Information
-
Patent Grant
-
6428646
-
Patent Number
6,428,646
-
Date Filed
Wednesday, June 28, 200024 years ago
-
Date Issued
Tuesday, August 6, 200222 years ago
-
Inventors
-
Original Assignees
-
Examiners
Agents
-
CPC
-
US Classifications
Field of Search
US
- 156 3041
- 156 157
- 156 3043
- 156 504
- 156 505
- 156 506
- 156 517
- 156 250
- 156 230
- 156 206
- 156 350
- 156 353
- 156 361
- 156 494
- 156 495
- 156 510
- 156 523
- 156 540
- 156 543
- 156 553
- 156 199
- 156 502
- 156 446
- 156 522
- 156 183
- 156 185
- 242 173
- 242 550
- 242 5553
- 242 5542
- 242 555
- 242 5561
- 242 551
- 242 553
-
International Classifications
- B31F700
- B31C1100
- G05G1500
- B65H4918
- B65H1928
-
Abstract
An apparatus and method for applying adhesive transfer tape, including an adhesive tape transfer roll holding an adhesive transfer tape, a roll locking cylinder wherein the roll locking cylinder stops the adhesive tape transfer roll from rolling, stopping the transfer of the adhesive transfer tape, and where the locking cylinder further holds the adhesive transfer tape roll for a predetermined time after the completion of the tape transfer such that internal stresses are dissipated. The apparatus and method may further include a piston that raises the adhesive transfer tape at the same time as the roll locking cylinder stops the adhesive tape transfer roll stops rolling.
Description
BACKGROUND OF THE INVENTION
1. Field of Invention
This invention is directed to applying adhesive tape to an elongated member.
2. Description of Related Art
Elongated members of various materials, such as webs and the like, are produced in bulk and wound on large spools for efficiency during transport. The large spools need to be sectioned into smaller spools for various end uses. When respooling elongated members, adhesive needs to be applied to the beginning and end sections of each portion of the elongated member. The beginning section adhesively attaches the portion of the elongated member to the spool. The end section keeps the portion of the elongated member wound on the spool from unwinding from the spool.
One method of applying adhesive is to form an adhesive transfer tape on a roll. The adhesive transfer tape roll then contacts the elongated member to apply the adhesive transfer tape to specific sections of a portion of the elongated member. The adhesive transfer tape applied to the elongated member is separated from the roll of adhesive transfer tape by tearing the adhesive transfer tape by moving the adhesive transfer tape roll and the elongated member relatively away from each other.
SUMMARY OF THE INVENTION
Known respooling machines have difficulty with accurately applying the adhesive transfer tape and ending the adhesive transfer tape transfer. Known adhesive transfer tape applicators, such as Dynak model #9E1590, do not efficiently transfer the adhesive transfer tape to the elongated member.
For example, on conventional respooling machines, applying the adhesive transfer tape to the elongated member is controlled by a cam rolling along a cam track. The cam track and cam assembly allow the adhesive tape roll to rotate to apply the adhesive tape and locks the adhesive tape roll to stop applying the adhesive tape. The cam track, for example, has two levels and has transitions between the two levels that respectively engage and disengage the roll locking piston. The adhesive tape transfer roll slides along the elongated member between tape applications. The conventional respooling machines do not efficiently control the tape transfer process, causing the adhesive transfer tape to break in the wrong place or to become dislodged from the elongated member.
This invention provides tape transfer systems and methods that lift the adhesive tape transfer roll to a breaking position after applying the adhesive transfer tape to the elongated member to facilitate the adhesive transfer tape being applied to the elongated member from the adhesive transfer tape roll.
This invention separately provides tape transfer systems and methods that hold the adhesive transfer tape in an application position for a period of time to allow internal stresses to be released prior to moving the adhesive transfer tape back to a start position for the next adhesive transfer tape applying operation. The tape transfer systems and methods of this invention permit, for example, various qualities of adhesive transfer tape to be used. This allows users flexibility and improves cost savings when choosing an adhesive transfer tape.
These and other features and advantages of this invention are described in or are apparent from the following detailed description of various exemplary embodiments of the systems and methods according to this invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Various exemplary embodiments of this invention will be described in detail with reference to the following figures wherein:
FIG. 1
is a block diagram of A Prior Art embodiment of an elongated member respooling apparatus;
FIG. 2
is a diagram of the section of the Prior Art elongated member that has adhesive transfer tape applied to it;
FIG. 3
is a block diagram of one exemplary embodiment of a known respooling apparatus;
FIG. 4
is a diagram of a conventional cam and cam track;
FIGS. 5-8
are diagrams illustrating one exemplary embodiment of the process for applying adhesive transfer tape;
FIG. 9
is a block diagram of one exemplary embodiment of a respooling apparatus according to the invention;
FIG. 10
is a diagram of one exemplary embodiment of a cam and cam track of the respooling apparatus shown in
FIG. 9
; and
FIG. 11
is a diagram showing the switch
222
of
FIG. 9
in greater detail.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
FIG. 1
shows a block diagram of A Prior Art embodiment of an elongated member respooling apparatus
10
. The elongated member respooling apparatus
10
includes an initial elongated member roll
20
, a final elongated member roll
60
and an elongated member cutter re-feeder
40
with an adhesive tape transfer roll
50
. Portions of the elongated member
30
are transferred from the initial elongated member roll
20
to the final elongated member roll
60
.
The elongated member cutter re-feed
40
applies adhesive transfer tape from the adhesive tape transfer roll
50
to the elongated member
30
before cutting the current portion of the elongated member
30
from the rest of the elongated member
30
to complete the current final elongated member roll
60
and beginning to feed the next portion of the elongated member
30
to the next elongated member roll
60
. The final elongated member roll
60
is regularly replaced as it fills up. The initial elongated member roll
20
is replaced, for example, one-eighth as many times as is the final elongated member roll
60
.
The initial elongated member roll
20
is first loaded into the elongated member respooling apparatus
10
. A start end of a first portion of the elongated member
30
is withdrawn from the initial elongated member roll
20
and fed through the elongated member cutter re-feeder
40
to respool the first portion of the elongated member
30
from the initial elongated member roll
20
to the final elongated member roll
60
. The elongated member cutter re-feeder
40
then applies a first strip of adhesive transfer tape
52
to the beginning section of the first portion of the elongated member
30
using the adhesive tape transfer roll
50
.
The elongated member
30
is then fed into the final elongated member roll
60
. In particular, the elongated member
30
is advanced until the final elongated member roll
60
is full. The elongated member cutter re-feeder
40
then applies two strips of the adhesive transfer tape
52
and
56
from the adhesive transfer tape roll
50
to the elongated member
30
. This is shown in greater detail in FIG.
2
. The second strip of the adhesive transfer tape
56
keeps the current portion of the elongated member loaded to the current final elongated member roll
60
from unwinding. Another first strip of the adhesive transfer tape
52
attaches the next portion of the elongated member
30
to the next final elongated member roll
60
.
The initial elongated member roll
20
, the final elongated member roll
60
and the elongated member
30
are shown as exemplary embodiments. The elongated member can actually be a substrate of any known or later developed material, such as tape, plastic, cloth or paper. Any substances which needs to be transferred from a first roll to a second roll and fastened to the second roll by an adhesive is suitable for use in the present invention.
Further, the Prior Art embodiment shows one initial elongated member roll
20
and a single final elongated member roll
60
. However, multiple initial elongated member rolls
20
and multiple final elongated member rolls
60
can be used either in sequence or simultaneously where the elongated member cutter re-feeder
40
also slits or joins the elongated member
30
in the travel direction as well as cutting the elongated member
30
when the final elongated member roll
60
is full.
FIG. 2
shows the elongated member
30
of the Prior Art as it travels through the elongated member cutter re-feeder
40
. The portion of the elongated member
30
shown in
FIG. 2
includes the second adhesive tape portion or strip
56
which keeps the current portion of the elongated member
30
from unwinding from the current final elongated member roll
60
and the first adhesive tape portion or strip
52
which attaches the elongated member
30
to the final elongated member roll
60
.
The first adhesive transfer tape portion is begun at start line
54
. The first adhesive tape portion
52
is separated from the second adhesive transfer tape portion
56
by a distance extending between the start line
58
of the second adhesive tape portion
56
and the end line
53
of the first adhesive tape portion
52
. That is, the first adhesive tape portion
52
is broken off of the adhesive transfer tape roll
50
at the end line
53
by applying a tensile force between the first adhesive tape portion
52
and the rest of the adhesive transfer tape
50
. This tensile force causes the adhesive transfer tape to fracture at the end, or break, at the end line
53
.
After the first adhesive tape portion
52
is adhesively attached to the current portion of the elongated member
30
being wound on the current final elongated member roll
60
, the second adhesive tape portion
56
is started at the start line
58
and adhesively attached to the beginning section of the next portion
32
of the elongated member
30
. The second adhesive tape portion
56
is then broken off from the adhesive transfer tape
50
at the end, or break, line
57
by applying a tensile force between the second adhesive tape portion
56
and the rest of the adhesive transfer tape roll
50
. As above, the tensile force causes the adhesive transfer tape
50
to fracture, or break, at the end line
57
.
The elongated member
30
travels in the direction of the arrow A. After the first and second adhesive transfer tape portions
52
and
56
have been applied, the elongated member
30
is cut at a cut line
59
to separate the current portion
32
of the elongated member
30
from the next portion
34
.
FIG. 3
shows a portion of a conventional respooling apparatus
100
. As shown in
FIG. 3
, the conventional elongated member respooling apparatus
100
includes a transfer tape extending apparatus
110
, the adhesive tape roll
50
, a roll locking apparatus
140
and an adhesive tape application controller
120
. The adhesive tape application controller
120
includes a cam track
130
and a switch
122
connected to a cam
126
via a link
124
. The cam
126
travels along the cam track
130
to selectively apply the adhesive tape
50
to the elongated member
30
.
The roll locking apparatus
140
engages with the adhesive tape roll
50
to prevent the adhesive tape roll
50
from rotating. This prevents the adhesive tape from being applied to elongated member
30
. The adhesive tape roll
50
may not directly contact elongated member
30
, but may contact elongated member
30
through a roll extender
51
. The roll extender
51
can be any apparatus for allowing the adhesive tape roll
50
to contact the elongated member
30
while allowing roll locking apparatus
140
to engage the adhesive tape roll. The tape extending apparatus
110
is not connected to the roll locking apparatus
140
and simply engages the adhesive tape roll
50
at the beginning of the application cycle and disengages the adhesive tape roll
50
at the end of the application cycle.
In the conventional respooling apparatus
100
, because the adhesive tape transfer roll
50
quickly lifts upward and retracts as it travels on the cam track
130
, the transfer tape does not have enough surface area of the elongated member
30
to stick against. The lack of enough transfer tape on the elongated member
30
and the sudden pulling on the transfer tape as the adhesive tape transfer roll
50
retracts causes the transfer tape to peel from the elongated member
30
. Further, the short travel length due to the small notched cam track
130
when the tape extending apparatus
110
is pushing the adhesive tape transfer roll
50
down causes the adhesive tape transfer roll
50
to skid across the elongated member
30
. This occurs because too much compression force was exerted by the tape extending apparatus
110
, which caused the adhesive transfer tape roll
50
to lock up. This forces the operator to have to reset the elongated member
30
each time the transfer tape peels. This causes considerable down time since large volumes of elongated member
30
are respooled each day.
The switch
122
is connected to the cam
126
via the link
124
, such that, when the cam
126
and the cam track
130
, move relative to each other the link
128
engages the roll locking apparatus
140
with, or disengages the roll locking apparatus
140
from, the adhesive tape roll
50
, as noted below. It should be appreciated that for ease of understanding only, the following description refers to the cam travelling along a stationary cam track, event though, in a working embodiment, the cam track may move relative to a stationary cam.
For example, the elongated member
30
travels towards final roll
60
and fills up the current final elongated member roll
60
. When the current final elongated member roll
60
is determined to be full, the tape application is initialed process. The tape application process begins by the roll extending apparatus
110
moving the adhesive tape roll
50
into contact with the elongated member
30
.
As shown in Prior Art
FIG. 4
, at the beginning of the tape application cycle, the cam
126
starts traveling along the first tape application portion
133
of the cam track
130
. When the cam
126
reaches the first tape break portion
134
on the cam track
130
, the cam
126
moves up. This upward motion is transferred through the physical link
124
to the switch
122
. The switch
122
then engages an air power transfer link
128
, such that roll locking apparatus
140
engages the adhesive tape roll
50
and stops the adhesive tape roll
50
from rolling and stops adhesive tape roll
50
from applying adhesive tape to the elongated member
30
.
The adhesive tape roll
50
may not directly contact the elongated member
30
, but may contact the elongated member
30
through the roll extender
51
. The roll extender
51
can be any apparatus that allows the adhesive tape roll
50
to contact the elongated member
30
while allowing the roll locking apparatus
140
to engage the adhesive tape roll
50
at a distance from the elongated member
30
The cam
126
then moves along the tape non-application portion
135
that spaces the adhesive tape strip
56
from the adhesive tape strip
52
. Then, when the cam
126
reaches the tape release portion
136
, at the end of the tape non-application portion
135
, the cam
126
disengages the switch
122
via the physical link
124
. The switch
122
then cuts off the air supply to the air power transfer link
128
, such that the roll locking apparatus
140
disengages from the adhesive tape roll
50
. The tape is then applied as the cam
126
travels along a second tape application portion
137
to apply the tape strip
56
. The adhesive tape is applied to the elongated member
30
until the cam
126
reaches the second tape break portion
138
. At the second tape break portion
138
, the cam
126
once again moves up, engaging, via the switch
122
, the roll locking apparatus
140
with the adhesive tape transfer roll
50
to stop the adhesive tape transfer roll
50
from rolling. The process ends when the cam
126
reaches the end of the portion
139
, signaling that the respooling apparatus
100
should be reset.
However, in the conventional respooling apparatus
100
another problem is created, in that the distance between the second adhesive tape portion
56
and the first adhesive tape portion
52
needs to be free of adhesive. As shown in
FIGS. 3 and 4
, in the conventional respooling apparatus
100
, the roll locking apparatus
140
is used to stop the application of the adhesive tape in the portion of the elongated member
30
corresponding to the second tape non-application portion
135
of the cam track
130
. However, engaging the roll locking apparatus
140
at the end of the second adhesive tape portion
56
results in a lack of build-up of stresses within the adhesive tape transfer roll
50
, such that the adhesive tape may fail to break, causing a malfunction. The malfunction may take the form of an improperly or not torn adhesive transfer tape or a dislodged adhesive transfer tape roll
50
. The respooling apparatus
100
must then be shut down and the adhesive transfer roll
50
reset by hand.
The elongated member cutter/re-feeder
40
has been described in conjunction with the cam track
130
. However, any timing means, such as a cable with regular protrusions or a timing circuit, can be used with the respooling apparatus according to this invention.
FIGS. 5-8
are diagrams illustrating one exemplary embodiment of the process for applying the adhesive transfer tape. As shown in
FIG. 5
, the elongated member
30
traveling towards final elongated member roll
60
passes by the adhesive transfer roll
50
and a cutting knife
70
. When a determination has been made that the elongated member
30
has filled up the final elongated member roll
60
, the tape application process begins.
FIG. 6
shows the adhesive transfer tape roll
50
in contact with the elongated member
30
to apply the first adhesive tape portion
52
. The first adhesive tape portion
52
is then broken from the adhesive transfer tape roll
50
when the roll locking apparatus
140
engages the adhesive tape transfer roll
50
. As a result, the adhesive tape portion
52
is torn from the adhesive tape transfer roll
50
.
FIG. 7
shows the elongated member
30
with both of the first and second adhesive tape portions
52
and
56
applied to the elongated member
30
. Both of the first and second adhesive tape portions
52
and
56
have been broken off from the adhesive tape transfer roll
50
and are moving towards final elongated member roll
60
.
FIG. 8
shows the cutting knife
70
cutting the elongated member
30
between the first and second adhesive tape portions
52
and
56
. This ends the adhesive tape transfer process and begins the switch from the current to the next final elongated member roll
60
.
When using this conventional respooling apparatus
10
, it is difficult to accurately judge where the adhesive tape portions
52
and
56
are going to break off from the adhesive tape transfer roll
50
. As the portion
33
of the elongated member
30
between the first and second adhesive tape portions
52
and
56
is small, it is cumbersome and difficult to put any sort of cutting knife (not shown) around the adhesive transfer tape roll
50
to precisely cut the adhesive tape portions
52
and
56
from the adhesive transfer tape roll
50
. Thus, this invention identifies two methods to improve the accuracy and efficiency of the breaking point of the adhesive transfer tape
50
through tension breaking.
FIG. 9
shows a portion of a respooling apparatus
200
according to this invention. As in
FIG. 3
, the conventional elongated member respooling apparatus
200
includes a roll extending apparatus
210
, the adhesive tape roll
50
, the roll locking apparatus
140
and an adhesive tape application controller
220
. The adhesive tape application controller
220
includes an improved cam track
230
and or an improved switch
222
connected to a cam
226
via a link
224
. The cam
226
travels along the cam track
230
to selectively apply the adhesive transfer tape roll
50
to the elongated member
30
.
The roll locking apparatus
140
engages with the adhesive tape transfer roll
50
to prevent the adhesive tape transfer roll
50
from rotating. This prevents the adhesive tape from being applied to the elongated member
30
. The roll extending apparatus
210
is connected to the roll locking apparatus
140
through the links
229
and
228
and the switch
222
. The roll extending apparatus
210
engages the adhesive tape transfer roll
50
at the beginning and end of the application cycle. In contrast to the conventional respooling apparatus
100
, the respooling apparatus
200
also moves the adhesive tape roll
50
to a cutting position at the same time the roll locking apparatus
140
engages and disengages the adhesive tape roll
50
at the end of each application of the first and second tape strips
52
and
56
.
The switch
222
is connected to the cam
226
via the link
224
and to the roll extending apparatus
210
via the link
229
such that when the cam
226
travels along the cam track
230
, the link
228
engages or disengages the roll locking apparatus
140
and link
229
engages or disengages the roll extending apparatus
210
.
For example, as the elongated member
30
traveling towards the current final roll
60
and fills up the current final elongated member roll
60
and initiates the tape application process. The tape application process begins by the roll extending apparatus
210
moving the adhesive tape transfer roll
50
into contact with the elongated member
30
.
As shown in
FIG. 10
, at the beginning of the tape application cycle, the cam
226
starts traveling along the first tape application portion
233
of the cam track
230
. When the cam
226
reaches the first tape break portion
234
, at the end of the first tape application portion
233
of the cam track
230
, the cam
226
moves up. This upward motion is transferred through the physical link
224
to the switch
222
. The switch
222
then engages the air power transfer links
228
and
229
such that roll locking apparatus
140
engages the adhesive tape transfer roll
50
and stops the adhesive tape transfer roll
50
from rolling, while at the same time, the tape extending apparatus
210
lifts the adhesive tape transfer roll
50
from contact with the elongated member
30
.
Then, when the cam
226
reaches the tape release portion
236
, the cam
226
disengages the switch
222
via the physical link
224
. The switch
222
then cuts off the air supply to the air power transfer links
228
and
229
, such that the roll locking apparatus
140
disengages from the adhesive tape roll
50
, while the tape extending apparatus
210
places the adhesive tape transfer roll
50
back into contact with the elongated member
30
. The tape is then applied as the cam
226
travels along the second tape application portion
237
until the cam
226
reaches the second tape break portion
238
.
At the second tape break portion
238
, the cam
226
once again moves up, engages via the switch
222
, causing the roll locking apparatus
140
to stop the adhesive tape transfer roll
50
and the tape extending apparatus
210
to lift the adhesive tape transfer roll
50
from the elongated member
30
. The cam
226
then travels along a second tape non-application portion
239
, including an extended portion
239
a
, until all internal stresses in the adhesive tape transfer roll
50
have equalized. The process ends when the cam
226
reaches the end of the second portion
239
a
, signaling that the respooling apparatus
200
should be reset.
FIG. 11
shows one exemplary embodiment of the switch
222
in greater detail. As shown in
FIG. 11
, the switch
222
includes a switch element
250
, an air dispersion device
260
, a common vent
270
, and air pressure transfer links
254
,
229
and
228
. The switch
222
is controlled through the physical link
224
which is attached to the switch element
250
.
As noted above, when the cam
226
moves downward, the movement is communicated through the physical link
224
. The link
224
controls the switch element
250
to remove the air force from the air pressure transfer links
229
and
228
. The switch element
250
can be the known device part number ARO 202C. The switch
250
removes the power from the air pressure transfer links
229
and
229
by removing the pressure from the air pressure transfer link
254
. The air pressure transfer link
254
is connected to the air dispersion device
260
. The air dispersion device
260
can be the known device part number ARO 5030-07 that includes one input port and two output ports.
When the switch
250
and the air dispersion device
260
remove the air pressure from the air pressure transfer links
254
,
229
, and
228
the air may be released through the common vent
270
.
While air pressure transfer links
128
,
228
,
229
and
254
are discussed in terms of air power supply systems, other combinations are possible. For example, air pressure transfer links
128
,
228
,
229
and
254
can be physical, hydraulic or electrical links. In addition, physical link
124
can be an electrical, hydraulic, wireless or air pressure link. In general, the links described herein can be any known or later developed connection system or structure for connecting the described components.
Thus this exemplary embodiment increases the amount of surface area the transfer tape comes into contact with as it begins to break from the elongated member
30
. In this embodiment, the cam track
230
was modified at the end of its travel length
238
. This allows the adhesive transfer tape roll
50
to travel over a longer distance as it is lifting to break the transfer tape so that more tearing force is applied.
In another exemplary embodiment, to have more of a pulling upward force applied to the elongated member
30
, a 3-way spool valve was inserted below the air cylinder to control the amount of air going to the air cylinder as the switch
222
. A roll contact switch was used as the switch element
250
to come in contact with the cam
223
to control when air would be applied to the tape extending apparatus
210
. When the cam
223
was rolling along the lower notched level of the cam track
230
, the cam
223
caused the spool valve to release air from the tape extending apparatus
210
which caused the spring above the tape extending apparatus
210
to force the tape extending apparatus
210
down. Using a double notched cam track
230
allows for the adhesive tape transfer roll
50
to lower onto the elongated member twice so that the transfer tape could be applied to a longer surface area of the elongated member
30
with more pulling force on the transfer tape.
This helps cause a sharper and cleaner adhesive tape breakage when the tape extending apparatus
210
lifts upward. The 3-way spool valves and roll contact switches were mounted on all the transfer tape application points when the tape extending apparatus
210
lifted upward. The 3-way spool valves and roll contact switches were mounted on all the taper devices on the exemplary Dynak machine. Different qualities of transfer tape were used including some tapes that had caused problems previously because of poor adhesive quality. Testing showed that the respooling apparatus
200
according to this invention was able to put on different qualities of transfer tape onto the adhesive transfer tape rolls with no problems of the transfer tape peeling back from the elongated member as the tape extending apparatus
210
retracts.
While this invention has been described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, preferred embodiments in the invention as set forth herein are intended to be illustrative, not limiting. Various changes can be made without departing from the spirit and scope of the invention.
Claims
- 1. A method of applying adhesive transfer tape to an elongated member using an adhesive transfer tape apparatus comprising: an adhesive tape transfer roll holding an adhesive transfer tape; a timing device; a piston attached to the adhesive transfer tape roll that positions the transfer tape into and out of contact with the elongated member; a roll locking cylinder that engages and disengages the adhesive tape transfer roll to selectively stop rotation of the adhesive tape transfer roll when engaged and allow rotation of the adhesive tape transfer roll when disengaged; and a switch that communicates with both the piston and the roll locking cylinder to control operation according to output from the timing device, the method comprising:moving the piston at a first timing to initially contact the transfer tape with the elongated member while the roll locking cylinder is disengaged to apply a first strip of adhesive tape to the elongated member; controlling the switch at a second timing to engage the roll locking cylinder with the adhesive tape transfer roll to stop rotation of the transfer tape and at the same time control lifting of the transfer tape out of contact with the elongated member by retraction of the piston to break the first strip of adhesive tape; controlling the switch at a third timing to disengage the roll locking cylinder from the adhesive tape transfer roll to allow rotation of the transfer tape and move the piston to push the transfer tape back into contact with the elongated member to apply a second strip of adhesive tape to the elongated member; and controlling the switch at a fourth timing to reengage the roll locking cylinder with the adhesive tape transfer roll to stop rotation of the transfer tape and at the same time moving the piston to lift the transfer tape out of contact with the elongated member to break the second strip of adhesive tape.
- 2. The method of claim 1, further comprising:waiting a fifth timing after the fourth timing that allows release of internal stresses within the adhesive transfer roll to equalize before resetting the adhesive transfer roll to a start position to initiate a new taping sequence.
- 3. An apparatus for applying adhesive transfer tape to an elongated member, comprising:an adhesive tape transfer roll holding an adhesive transfer tape; a timing device; a piston attached to the adhesive transfer tape roll that positions the transfer tape into and out of contact with the elongated member; a roll locking cylinder that engages and disengages the adhesive tape transfer roll to selectively stop rotation of the adhesive tape transfer roll when engaged and allow rotation of the adhesive tape transfer roll when disengaged; and a switch that communicates with both the piston and the roll locking cylinder to control operation according to output from the timing device, wherein at a first timing the piston initially moves the transfer tape into contact with the elongated member while the roll locking cylinder is disengaged to apply a first strip of adhesive tape to the elongated member, at a second timing the switch controls the roll locking cylinder to engage the adhesive tape transfer roll to stop rotation of the transfer tape at the same time the piston lifts the transfer tape out of contact with the elongated member to break the first strip of adhesive tape, at a third timing the switch controls the roll locking cylinder to disengage the adhesive tape transfer roll to allow rotation of the transfer tape and the piston moves the transfer tape back into contact with the elongated member to apply a second strip of adhesive tape to the elongated member, at a fourth timing the switch controls the roll locking cylinder to engage the adhesive tape transfer roll to stop rotation of the transfer tape at the same time the piston lifts the transfer tape out of contact with the elongated member to break the second strip of adhesive tape.
- 4. The apparatus of claim 3, wherein the timing device provides a fifth timing at a time interval after the fourth timing that allows release of internal stresses within the adhesive transfer roll have equalized before the adhesive transfer roll is reset to a start position.
- 5. The apparatus of claim 3, wherein a cam track and cam form the timing device.
- 6. The apparatus of claim 3, wherein the switch communicates with the roll locking cylinder and the piston through air pressure transfer links and switching occurs through change in air pressure through the air pressure transfer links.
- 7. The apparatus of claim 6, wherein the switch is a 3-way spool valve.
US Referenced Citations (6)