JP2005104679A - Method and device for joining both sides of web - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten the web transport and stop time on the upstream side of an accumulator to be stopped for joining webs, to miniaturize the accumulator, and to reduce the cost thereby. <P>SOLUTION: Before a terminating end of a transport web 63 is detected by a detection sensor 67 to start the joining of the webs, a web preparing device 10 is preliminarily turned, and a suction plate 16 with a new web 26 sucked is preliminarily moved by a predetermined distance to a press mat 104 side of a splice device 12. When the terminating end of the transport web 63 is detected, transport of the transport web 63 at the web joining position is stopped, and the transport web 63 is further moved to the press mat 104 side to join the webs. At the same time, as soon as the transport web 63 is carried and stopped, a transport web accumulated in advance in an accumulator 6 provided on the downstream position in the web transport direction with respect to the web joining position is discharged to continue continuous transport of the transport web 63. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a web joining method and apparatus for joining abutting portions of thin strips (hereinafter referred to as webs) such as plastic film, paper, and metal foil that are continuously conveyed with an adhesive tape.

  Webs such as plastic film, paper, and metal foil that are continuously conveyed are joined together to form a long product. For joining the webs, the butted portions of the end portions are bonded with a joining tape. In this web butt joint, as described in Japanese Patent Application Laid-Open No. H10-228667, firstly, one web to be joined and the other web are adsorbed to a first suction box and a second suction box, respectively. Since the first suction box and the second suction box are alternately provided and have cutters at their adjacent corners, when the first suction box is lifted after adsorption, the first suction box One adsorbed web and the other web adsorbed by the second suction box are cut in a superposed state.

  Next, the other web is transferred from the second suction box to a third suction box provided to face the second suction box. In this state, the butted portions of the webs are bonded from the direction facing the first and third suction boxes with a bonding tape prepared in advance.

  Further, in Patent Document 2, a cam follower is formed on two cam blocks by receiving one web front end with a first joining plate and further receiving the other web rear end with a second joining plate. When moved by engaging with one of the cam grooves, the bonding tape is surface-bonded to the butt portion between the webs. Alternatively, it is described that the cam follower is engaged with the other cam groove and moved to be joined on the back surface.

  Further, in Patent Document 3, the leading end of one web is sucked by the first suction box and the trailing end of the other web is sucked by the second suction box, and then the cutting device is moved in the width direction of the web. It is described that the cutting is performed in a state where the leading end and the trailing end are overlapped, and the pasting device is moved along the cut portion to join the butted portions of the web.

  However, both of these joining methods have a problem that the strength of the joining portion cannot be sufficiently maintained because the butt portion between the webs is bonded from one side with a joining tape. If the conventional joining device is used to bond both surfaces of the butt portion, the joining device becomes large and practical application is difficult.

In view of this, the present applicant disclosed in Patent Document 4 a simple mechanism in which a pressing mat and a suction plate sandwich a butt portion of a conveyance web and a new web so that both sides of the butt portion are bonded with first and second bonding tapes. Proposed a web joining device that can bond both sides of the web butt with a joining tape.
Japanese Patent Publication No.49-33098 JP-A-41-16335 Japanese Patent Publication No.55-31067 Japanese Patent Laid-Open No. 3-128847

  However, in the web joining method disclosed in Patent Document 4, the transport web stored in advance in an accumulator provided at a downstream position of the web joining position is discharged, so that downstream processes after the accumulator (for example, processing such as coating) The continuous transport operation of the step) can be performed. However, if the web width is 2 m and the web transport speed is 150 m / min, 25 seconds to 35 from the stop of the transport of the transport web to the end of the web joining. It has the disadvantage of requiring a large accumulator that takes about seconds.

  The present invention has been made in view of such circumstances, and can shorten the web conveyance stop time on the upstream side of the accumulator that is stopped for the joining of the web, so that the accumulator can be made compact, thereby reducing the cost. It is an object of the present invention to provide a method and apparatus for double-sided web bonding that can achieve the above.

  According to a first aspect of the present invention, in order to achieve the above object, the first suction step of moving to the position of the transport web and sucking the transport web to the first suction plate, and the transport sucked in the first suction step A cutting process for cutting the web, a bonding tape supplying process for moving the first bonding tape to the web bonding position by adsorbing the first bonding tape to the pressing mat, and a second bonding tape attached to the tip portion A second suction step of sucking the new web onto the second suction plate and moving the new web to the web joining position, and the pressing by the joining tape supply step and the second suction step. In a double-sided web bonding method in which the mating portion and the second suction plate sandwich the butted portion of the transport web and the new web and both surfaces of the butting portion are bonded with the first and second bonding tapes. A detection step of detecting the end of the transport web, and a preliminary movement step of moving the second suction plate that sucks the new web before detecting the end of the transport web to the pressing mat side by a predetermined distance in advance, When the end of the transport web is detected, the transport web previously stored in the accumulator provided at the downstream position in the web transport direction with respect to the web joining position is discharged, while the transport web on the upstream side of the accumulator is transported. A web discharge step for stopping the web, and when the conveyance of the upstream conveyance web is stopped, the second suction plate is further moved to the pressing mat side to perform double-sided bonding of the web.

  According to a second aspect of the present invention, in order to achieve the above object, the first suction unit that moves to the position of the transport web and sucks the transport web to the first suction plate, and the first suction unit sucks the transport web. A cutting means for cutting the transported web, a joining tape supplying means for moving the first joining tape to the web joining position by adsorbing the first joining tape to the pressing mat, and a second joining tape attached to the tip portion. Second adsorbing means for adsorbing the new web attached to the second adsorbing plate and moving the new web to the web adhering position. The adhering tape supply means and the second adsorbing means In a double-sided web joining apparatus in which the pressing mat and the second suction plate sandwich the butting portion of the transport web and the new web and both surfaces of the butting portion are bonded by the first and second joining tapes. , A preliminary sensor for moving a detection sensor for detecting the end of the transport web and a second suction means for sucking a new web to the second suction plate to the pressing mat side of the joining tape supply means in advance by a predetermined distance. A moving means, an accumulator that is provided at a downstream position in the web conveyance direction with respect to the web joining position and discharges the previously stored conveyance web, and before the detection sensor detects the end of the conveyance web While driving the preliminary movement means and detecting the end of the transport web, the accumulator is driven, while the transport of the transport web upstream of the accumulator is stopped and the second suction plate is moved to the pressing mat side. And a web bonding control means for performing double-sided bonding of the web by further moving the web.

  In order to continuously perform the processing applied to the web on the web processing line, as a method of adhering both surfaces of the butt portion of the web with the first and second bonding tape without stopping the continuous conveyance of the conveyance web, It can be handled by installing an accumulator in the middle of the web transport line, but the transport stored in the accumulator is stopped from the time the web transport is stopped at the web joining position until the web joining is completed. There is a problem that the web must be released, and an extremely large accumulator is required, which increases the equipment cost.

  On the other hand, the operation that takes the longest time to join the web is an operation of moving the suction plate that has attracted a new web to the pressing mat side (for example, turning movement), and stopping the conveyance of the conveyance web. This operation occupies 8 to 10 seconds out of the required time 25 to 35 seconds until the web joining is completed, and other individual operations are about 3 seconds.

  Therefore, according to the present invention, the second suction plate that sucks a new web before detecting the end of the transport web and starts joining the web is preliminarily moved to the pressing mat side by a predetermined distance in advance. When the end of the transport web is detected, the transport of the transport web is stopped at the upstream side of the accumulator, that is, the web joining position, while the transport web stored in the accumulator is discharged onto the web processing line to continuously transport the web. Continue. In this state, the suction plate is further moved to the pressing mat side to perform double-sided bonding of the web. Thereby, since the web conveyance stop time in the upstream of the accumulator which stops for the joining of a web can be shortened, an accumulator can be made compact. Therefore, cost reduction can be achieved by downsizing the accumulator.

  As described above, according to the double-sided web bonding method and apparatus of the present invention, the web conveyance stop time on the upstream side of the accumulator that stops for the web bonding can be shortened, so the accumulator can be made compact. And cost reduction can be achieved.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a double-sided web bonding method and apparatus according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a block diagram showing an example of a web processing line 1 incorporating a double-sided web joining device 7 of the present invention.

  As shown in FIG. 1, a web processing line 1 is for processing a web fed from a web feeding device 2 with a processing device 3 and winding it on a winding device 4, for example, a processing device such as coating and drying. 3, a web double-side joining device 7 including a web joining machine 5 and an accumulator 6 is disposed upstream.

  2-8 is a figure regarding the web joining machine 5, and FIG. 9 is a figure regarding the accumulator.

  As shown in FIGS. 2 and 3, the web bonding machine 5 mainly includes a web preparation device 10 and a splice device 12.

  The web preparation device 10 has a suction box 14, which is formed in a rectangular shape, and a suction plate 16 is attached to the upper surface thereof. Small holes for suction (not shown) are formed in the suction plate 16 on substantially the entire surface. Further, one end of the arms 18, 18 is fixed to both side surfaces of the suction box 14, and the other end of the arms 18, 18 is rotatably supported on the support base 22 </ b> A of the frame 22 via the shaft 20. Therefore, when the arms 18 and 18 are turned, the suction box 14 can turn in the direction of the arrow AB in FIG. 2 about the shaft 20 in FIG. The shaft 20 is connected to a rod 19 </ b> A of an air cylinder 19 that turns the arms 18, 18, and the ON / OFF of the air cylinder 19 is controlled by a controller 21. A hydraulic cylinder can be used instead of the air cylinder, and the shaft 20 may be turned by a stepping motor.

  A pass roller 24 is rotatably supported on the same axis as the shaft 20. The upper end of the pass roller 24 is located on the same plane as the surface of the suction plate 16. The suction box 14 communicates with a suction pump (not shown). Therefore, when the suction pump is operated, the new web 26 conveyed through the pass roller 24 is adsorbed by the adsorption plate 16 of the suction box 14. In FIG. 3, reference numeral 22B denotes a positioning plate of the web preparation device 10.

  As shown in FIG. 3, the splice device 12 is rotatably supported by the frame 22 via a pin 30. The support plate 12A fixed to the splice device 12 is provided with a pin 32, and one end of a lever 34 is rotatably supported by the pin 32. The other end of the lever 34 is rotatably supported on one end of the lever 38 via a pin 36, and the other end of the lever 38 is rotatably supported on the frame 22 via a pin 40. The rod portion 44 of the cylinder 42 is rotatably supported on the pin 36 connecting the lever 34 and the lever 38, and the cylinder portion 46 of the cylinder 42 is rotatably supported on the frame 22 via the pin 48. Accordingly, when the cylinder 42 is expanded and contracted, the splicing device 12 rotates around the pin 48 in the direction of arrow CD in FIG.

  Further, an upper suction box 50 is attached to the splice device 12 as shown in FIG. The upper suction box 50 is formed in a rectangular shape extending in a direction orthogonal to the paper surface of FIG. 4 and communicated with a suction pump (not shown) via a suction pipe 52 and a suction pipe 54. Further, a suction port (not shown) is formed in the left side portion 50A of the upper suction box 50 in FIG. 4, and an upper suction plate 56 is attached to the left side of the suction port. As shown in FIG. 2, small holes 56A, 56A,...

  A lower suction box 58 is attached below the upper suction box 50. Similarly to the upper suction box, the lower suction box 58 extends in a direction orthogonal to the paper surface of FIG. 4 and is formed in a rectangular shape, and communicates with a suction pump (not shown) via a suction pipe 60. A suction port (not shown) is formed in the left side 58A of the suction box 58, and a lower suction plate 62 is attached to the left side of the suction port 58A. As shown in FIG. 2, small holes 62A, 62A,... The lower suction plate 62 and the upper suction plate 56 are provided in upper and lower pairs on the same surface. Therefore, as shown in FIG. 2, when the suction web (not shown) is operated, the transport web 63 transported via the pass roller 65 rotatably supported by the frame 22 is connected to the upper suction plate 56 and the lower suction plate 62. To be adsorbed. As shown in FIG. 3, a detection sensor 67 for detecting the end of the transport web 63 is provided in the vicinity of the pass roller 65, and end detection information from the detection sensor 67 is sent to the controller 21 described above. When the controller 21 receives a preparation signal that informs the web preparation device 10 that a new web 26 is ready, the controller 21 preliminarily drives the stepping motor 19 before the end of the transport web 63 is detected. , The suction plate 16 is raised to the splice device 12 side by a predetermined distance. The preliminary turning angle for the preliminary turning differs depending on the angle between the web preparation device 10 and the splice device 12 before turning, but the angle between the web preparation device 10 and the splicing device 12 before turning as shown in FIG. 3 is 90 °. In this case, it is preferable to make a preliminary turn of 60 to 80 °, that is, 2/3 to 4/5 of the angle before the turn.

  Further, the splicing device 12 is provided with a cutter rail 64 in the left-right direction as shown in FIG. A rotary cutter device 66 is slidably supported on the cutter rail 64. As shown in FIG. 4, the rotary cutter device 66 is provided between the upper suction plate 56 and the lower suction plate 62. The rotary cutter device 66 supports cutter blades 68, 68 that are rotatable and parallel to the cutter rail 64. Accordingly, when the rotary cutter device 66 slides in the direction of the arrow EF in FIG. 5, the cutter blades 68 and 68 move in the direction of the arrow EF along the cutter rail 64, and the upper suction plate 56 and the lower suction are moved. The conveyance web 63 between the plates 62 is cut in the width direction.

  Further, as shown in FIG. 6, the splicing device 12 is provided with a clip rail 70 in the left-right direction, and a clip 72 is slidably supported on the clip rail 70. Further, a tape feeding device 74 and a release paper winding device 76 are provided at the left end portion 12A of the splicing device 12. Therefore, when the clip 72 is slid in the direction of the arrow F along the clip rail 70 while holding the joining tape 72A, the joining tape 72A is paid out from the tape feeding device 74 and adhered to the drawn-out tape. The release paper 72B is taken up by the release paper take-up device 76. Further, the splicing device 12 is provided with a tape bonding device 78 as shown in FIGS. The configuration will be described below with reference to enlarged views of the tape bonding apparatus 78 shown in FIGS. The splice device 12 is provided with rails 80 in the left-right direction in the figure, and guides 82, 82, 82. A plate 83 is fixed to the upper surface of the guides 82, 82, 82..., And support rollers 84, 84, pressing devices 85, 85 and pressing device guides 86, 86 are provided on the upper surface of the plate 83. A plate 88 is attached to the support rollers 84, 84... And the pressing device guides 86, 86. Rotary actuators 90 and 90 are placed on the plate 88. The shafts 95 and 95 are connected to the drive shafts 94A and 94A protruding outside the rotary actuators 90 and 90, and the shaft 96 is connected to the drive shaft 94B protruding inside the rotary actuators 90 and 90. The shafts 95 and 95 and the shaft 96 are rotatably supported by the plate 88 via bearings 98, 98.

  The shaft 95 is fixed to the arm 100, and the arms 100 and 100 are fixed to the moving body 102. The moving body 102 is provided with a pressing mat 104 via a seat plate 102A. The pressing mat 104 is made of an elastic body and has a rectangular shape. A surface 104A of the pressing mat 104 is formed in a curved surface shape, and small holes 106, 106, 106... For suction are formed on the curved surface surface as shown in FIG. The pressing mat 104 is connected to a suction pump (not shown) via suction pipes 108 and 108. Accordingly, the joining tape 72A drawn out by the clip 72 is attracted to the pressing mat 104 when the suction pump is operated. The pressing mat 104 rotates in the direction of arrow G in FIG. 4 when the rotary actuators 90 and 90 are operated, and moves in the direction of arrow J when the pressing device 85 is operated.

  As shown in FIG. 6, a support member 200 is fixed to the rail 80, the support member 200 is screwed to the ball screw 202, and the motor 204 is connected to the ball screw 202. Therefore, when the motor 204 is driven to rotate the ball screw 202, the tape bonding device 78 moves in the direction of arrow EF.

  As shown in FIG. 9, the accumulator 6 has an upper rail 302 and a lower rail 304 laid in the MN direction in FIG. Moving rollers 308A and 308B are provided at the upper and lower ends of the lator table 306. The upper moving roller 308A is supported by the upper rail 302, and the lower moving roller 308B is supported by the lower rail 304. Thereby, the accumulator table 306 is supported on the rail so as to be slidable in the MN direction. Further, pulleys 310A and 310B are provided at both end positions of the upper rail 302 and the lower rail 304, respectively, and endless chains 312A, 312B, and 312C are spanned between the pulleys 310A and 310B, respectively. A brake 313, a one-way clutch 314, and a motor 316 capable of rotating in the forward and reverse directions are disposed on the rotation shaft of the driving pulley 310A of the pulleys 310A disposed on the upper rail 302. In addition, a plurality of first guide rollers 318, 318,... Are rotatably supported at regular intervals in the longitudinal direction of the side surface of the accumulator table 306, and the first guide is also supported on the side surface of the frame. A plurality of second guide rollers 320, 320... Are rotatably supported so as to face the roller 318. Then, the transport web 63 is alternately wound around the first and second guide rollers 318 and 320. Accordingly, the conveyance web 63 stored in the accumulator 6 can be discharged onto the web processing line 1 by rotating the motor 316 so that the accumulator table 306 is slid in the N direction. Further, by rotating the motor 316 so that the accumulator table 306 is slid in the M direction, the accumulator 6 can store the transport web on the web transport line. A brake device 322 for stopping the conveyance of the conveyance web 63 is provided at the entrance position of the accumulator 6, and when the brake device 322 is operated, the conveyance of the conveyance web 63 on the upstream side of the accumulator 6 is stopped. . In this state, when the motor 316 is rotated so as to slide the accumulator table 306 in the N direction, the transport web 63 stored in the accumulator 6 is taken up by the take-up device 4, so the upstream side of the accumulator 6. That is, the web can be continuously conveyed while the conveyance of the conveyance web 63 at the web bonding position of the web bonding machine 5 is stopped.

  Next, the operation of the double-sided web joining device 7 according to the present invention configured as described above will be described.

  First, the bonding tape 72A for the back surface is prepared in the tape bonding device 78. When the operator turns on the lateral movement switch of the tape bonding apparatus 78 in step 150 shown in FIG. 10, the motor 204 is driven and the ball screw 202 is rotated forward. Accordingly, the pressing mat 104 is moved in the direction of arrow E in FIG. 6 along the rail 80 through the moving body 102, the arm 100, the shaft 95, the rotary actuator 90, the plate 88, the support roller 84, the plate 83, and the guide 82. Moving. After the movement of the pressing mat 104 is completed, the clip 72 is moved in the direction of arrow E along the clip rail 70 by operating the drive switch of the clip 72 in step 152. After the movement of the clip 72 is completed, the clip opening button is operated in step 154 to open the clip 72, the joining tape 72A is inserted into the clip 72, and then the clip closing button is pushed to hold the joining tape 72A to the clip 72. . After holding the joining tape 72A, the clip 72 is moved in the direction of arrow F in step 156. At this time, it is confirmed whether or not the joining tape 72A is being conveyed together with the clip 72. When the clip 72 is positioned at the center of the pressing mat 104, the joining tape 72A is removed from the clip 72 in step 158. At this time, a suction pump (not shown) is operated to adsorb the joining tape 72A to the pressing mat 104. Next, after confirming that the clip 72 has moved to the position in FIG. 6 at step 160, the joining tape 72A is cut at step 162 in accordance with the left cut mark. After the cutting, in step 164, the lateral movement switch of the tape bonding apparatus 78 is turned on, the ball screw 202 is reversed, and the pressing mat 104 is laterally moved in the direction of arrow F. After the movement is completed, in step 166, the joining tape 72A is cut according to the cut mark on the right side. Next, in step 168, the lateral movement switch of the tape bonding apparatus 78 is turned on to move the pressing mat 104 to the vicinity of the setting position, and then the fine adjustment handle is turned to set the pressing mat 104 to the setting position. This completes the preparation of the back surface joining tape 72A to the tape bonding apparatus 78.

  Together with the preparation of the back surface bonding tape 72A, as shown in FIG. 11, a front surface bonding tape 10A is prepared. First, in step 180, a suction pump (not shown) communicated with the web preparation device 10 is operated to suck a new web 26 onto the suction plate 16. Next, in step 181, the surface joining tape 16 A prepared in advance in a tape suction box (not shown) is attached to the tip of a new web 26 by half (the remaining half is bonded to the transport web 63 during web joining). )to paste together. Thus, a new web 26 and a surface joining tape 16 </ b> A are prepared in the web preparation device 10. The fact that the new web 26 and the surface joining tape 16A are prepared in the web preparation device 10 is sent to the controller 21 as a preparation signal. Receiving this preparation signal, the controller 21 preliminarily drives the air cylinder 19 of the web preparation device 10 in step 182 to turn the arms 18 and 18 by a predetermined angle to move the suction plate 16 toward the splice device 12 by a predetermined distance. Wait at the position where the preliminary swivel is raised. The web preparation device 10 indicated by a two-dot chain line in FIG. 3 is in a standby state. In this standby state, the suction plate 16 and the web preparation device 10 do not contact the transport web 63. The detection sensor 67 repeats the detection until it detects the end of the conveyance web 63 that is being conveyed in step 183, and when detected, the controller 21 that has received the signal detects the brake device provided in the accumulator 6 in step 184. 322 is operated to stop the conveyance of the conveyance web 63 at the upstream side of the accumulator 6, that is, the web joining position, and the cylinder 42 is extended to move the splicing device 12 in the direction of arrow C in FIG. In step 185, the controller 21 drives the motor 316 of the accumulator 6 at the same time as the conveyance of the conveyance web 63 is stopped, and moves the accumulator table 306 in the N direction on FIG. 9 and stores it in the accumulator 6. The conveying web 63 is discharged onto the web processing line 1. Thereby, since the conveyance web 63 is continuously conveyed on the web processing line 1 even during joining of the web, it is not necessary to stop the web processing in the processing apparatus 3.

  Next, after the movement of the splicing device 12 is completed, a suction pump (not shown) communicated with the splicing device 12 is actuated in step 186 to apply a suction force to the upper suction box 50 and the lower suction box 58, The conveyance web 63 is adsorbed to the upper adsorption plate 56 and the lower adsorption plate 62. Next, in step 188, the rotary cutter device 66 is caused to travel along the cutter rail 64 and the conveying web 63 is cut by the cutter blade 68. Next, the web preparation device 10 which has been swung up by a predetermined distance in step 190 is further swung in the direction of arrow A on FIG. At the same time, the rotary actuator 90 is operated in step 192 to turn the pressing mat 104 in the direction of arrow G in FIG. After the turn is completed, the pressing device 85 is operated to move the pressing mat 104 along the pressing device guides 86 and 86 in the direction of arrow J in FIG. 4 so that the pressing mat 104 and the suction plate 16 face each other and press each other. To do. Accordingly, the end portion of the transport web 63 and the end portion of the new web 26 are abutted, and in step 194, the abutting portion is bonded from both sides with a bonding tape. After the joining is completed, the web preparation device 10 is retracted in the arrow B direction and returned to the original position in step 196, and the pressing mat 104 is moved in the arrow K direction in step 198, and then rotated in the arrow H direction. Next, after the cylinder 42 is contracted and the splicing device 12 is retracted in the direction of arrow D in FIG. 3, the transport of the joined web is started. The joined web is conveyed and the rotary cutter device 66 is returned. In step 200, the driving of the accumulator 6 is stopped by releasing the driving of the brake device 322 of the accumulator 6 and stopping the movement of the accumulator table 306.

  As described above, in the present invention, the suction plate 16 is swung to the pressing mat 104 side by a predetermined amount before the end of the transport web 63 is detected and the web joining is started, and the end of the transport web 63 is detected. Then, the conveyance of the conveyance web 63 at the web joining position is stopped, and the suction plate 16 is turned to the pressing mat 104 side to join the web. At the same time as the conveyance of the conveyance web 63 is stopped, the conveyance web 63 stored in the accumulator is discharged in advance to continue the conveyance of the conveyance web 63. Thereby, both surfaces of the butt portion between the webs can be bonded with the first and second bonding tapes without stopping the conveyance of the conveyance web 63, so that the production efficiency can be improved and a small accumulator can be obtained. Therefore, the facility cost can be kept low.

  Next, examples of the present invention will be described, but the present invention is not limited to these examples.

  When the web width of the transport web 63 and the new web 26 is 2 m and the transport speed of the transport web 63 is 150 m / min, the operation of the web preparation device 10 shown in FIG. If it took 8 seconds.

  In contrast, in this embodiment, after step 181 and step 168 of FIG. 11 are completed, the arm 18 of the web preparation device 10 is raised by a pre-rotation by 75 °, stopped, and kept on standby. Then, when the end of the transport web 63 is detected by the detection sensor, the operations of Steps 184 to 188 are performed with the transport of the transport web 63 stopped. Next, the operations of steps 190 and 192 are performed simultaneously. Since the turning of the web preparation device 10 has already finished turning by 75 °, it is sufficient to turn the remaining 15 °, and the turning time is 5 seconds compared to the conventional case. It was shortened to 3 seconds. As a result, the web conveyance stop time (total time of steps 184 to 200) can be reduced from the conventional 25 seconds to 20 seconds.

  Since the transport speed of the transport web 63 is 150 m / min in the shortened 5 seconds, when converted into the length of the web, it corresponds to 12.5 m, and the accumulator amount can be shortened by 12.5 m. We were able to make it compact. Further, since the amount of accumulator was shortened by 12.5 m, the number of accumulator guide rollers could be reduced by 4 to 5, and the equipment cost of the accumulator could be reduced.

The line block diagram which shows an example of the web processing line which incorporated the double-sided joining apparatus of the web of this invention Front view of web bonding machine Side view of web bonding machine Cross-sectional view of the main parts of a web bonding machine AA sectional view of FIG. BB sectional view of FIG. Enlarged view of the main parts of a web bonding machine CC arrow view of FIG. Structure of accumulator The block diagram explaining the operation | movement step of the double-sided bonding apparatus of the web of this invention The block diagram explaining the operation | movement step of the double-sided bonding apparatus of the web of this invention

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Web processing line, 2 ... Feeding device, 3 ... Processing device, 4 ... Winding device, 5 ... Web joining machine, 6 ... Accumulator, 10 ... Web preparation device, 12 ... Splicing device, 14 ... Suction box, 16 ... suction plate (second suction plate), 18 ... arm, 19 ... air cylinder, 20 ... shaft, 21 ... controller, 22 ... frame, 24 ... pass roller, 26 ... new web, 30 ... pin, 32 ... pin 34 ... Lever, 36 ... Pin, 38 ... Lever, 40 ... Pin, 42 ... Cylinder, 44 ... Rod part, 46 ... Cylinder part, 48 ... Pin, 50 ... Upper suction box, 52 ... Suction pipe, 54 ... Suction pipe 56 ... Upper suction plate (first suction plate), 58 ... Lower suction box, 60 ... Suction pipe, 62 ... Lower suction Rate (first suction plate), 63 ... conveying web, 64 ... cutter rail, 65 ... pass roller, 66 ... rotary cutter device, 68 ... cutter blade, 70 ... clip rail, 72 ... clip, 72A ... bonding tape for the back surface 74 ... Tape feeding device, 76 ... Release paper winding device, 78 ... Tape bonding device, 80 ... Rail, 82 ... Guide, 84 ... Support roller, 86 ... Pressing device guide, 88 ... Plate, 90 ... Rotary actuator, 95 ... shaft, 96 ... shaft, 98 ... bearing, 100 ... arm, 102 ... moving body, 104 ... pressing mat, 106 ... small hole, 108 ... suction pipe, 200 ... support member, 202 ... ball screw, 300 ... frame, 302 ... Upper rail, 304 ... lower rail, 306 ... accumulator table, 308A, 308B Moving roller, 310A, 310B ... pulley, 312A, 312B, 312C endless chain, 313 ... brake, 314 ... one-way clutch, 316 ... motor, 318 ... first guide roller, 320 ... second guide roller, 322 ... brake apparatus

Claims (2)

A first suction process for moving to the position of the transport web and sucking the transport web to the first suction plate, a cutter process for cutting the transport web sucked in the first suction process, and pressing the first bonding tape A joining tape supplying step for attracting the mat to move the first joining tape to the web joining position, and a new web having the second joining tape attached to the tip portion is adsorbed to the second suction plate. A second suction step for moving a new web to a joining position, and the conveying web and the second suction plate by the joining tape supply step and the second suction step by the pressing mat and the second suction plate. In the double-sided bonding method of the web in which the butt portion of the new web is clamped and both sides of the butt portion are bonded with the first and second bonding tapes.
A detection step of detecting the end of the transport web;
A preliminary moving step of moving the second suction plate, which sucks the new web before detecting the end of the transport web, to the pressing mat side by a predetermined distance;
When the end of the transport web is detected, the transport web previously stored in the accumulator provided at the downstream position in the web transport direction with respect to the web joining position is discharged, while the transport web on the upstream side of the accumulator is transported. A web release process for stopping
When the conveyance of the upstream conveyance web is stopped, the second suction plate is further moved to the pressing mat side to perform double-sided web bonding. The first adsorbing means for moving to the position of the conveying web and adsorbing the conveying web to the first adsorption plate, the cutter means for cutting the conveying web adsorbed by the first adsorbing means, and pressing the first bonding tape A bonding tape supply means for adsorbing the mat to move the first bonding tape to the web bonding position, and a new web having the second bonding tape adhered to the tip portion is adsorbed to the second adsorption plate. A second suction means for moving a new web to a joining position, and the conveying web and the second suction plate by the joining tape supply means and the second suction means between the pressing mat and the second suction plate. In a double-sided web joining device that clamps a new web butt and bonds both sides of the butt with the first and second joining tapes,
A detection sensor for detecting the end of the transport web;
Preliminary moving means for moving a second suction means that has attracted a new web to the second suction plate by a predetermined distance in advance to the pressing mat side of the joining tape supply means;
An accumulator which is provided at a downstream position in the web conveyance direction with respect to the web joining position and discharges the conveyance web stored in advance;
The detection sensor drives the preliminary movement means before detecting the end of the transport web, and drives the accumulator when the end of the transport web is detected, while transporting the transport web upstream of the accumulator. A web double-side joining apparatus comprising: a web joining control unit that stops and further moves the second suction plate toward the pressing mat to perform double-side joining of the web.

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