JP3866801B2 - Web joining method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a web joining method and apparatus for joining a rear end of a first web and a front end of a second web used in place of the first web by abutting each other.
[0002]
[Prior art]
For example, a web such as a long film wound in a roll around a winding core is unwound from a web roll and cut into predetermined dimensions, and then stored in a light-shielding interior body by a plurality of sheets. Has been done. In this type of work, in order to efficiently send out a large amount of web, when the remaining amount of the web roll from which the web is fed decreases, the web and the web drawn from the new web roll are joined together, It is necessary to continue the web feeding operation through a new web roll.
[0003]
For this reason, various web joining apparatuses are used, for example, an apparatus disclosed in Japanese Patent Publication No. 8-25676 is known. This is related to the butt welding method, and this splicing method is used when it is necessary to pass a relatively thin web such as a magnetic tape or a narrow gap portion when using a coater or the like. ing.
[0004]
In this apparatus, on the turret board, the first sheet gripping device that grips the sheets of the respective sheet rolls mounted on the two unwinding shafts is disposed, and is unwound from the unwinding position to be the next process. A second sheet gripping device that grips the sheet and moves back and forth between the vicinity of the unwinding position and the retracted position on the travel line of the traveling sheet toward the head, and the unwinding position of the second sheet gripping device The cutting device and the adhesive tape applying device are integrally provided at the end portion on the side.
[0005]
In such a configuration, first, after a sheet terminated at the unwinding position (hereinafter referred to as a preceding sheet) is gripped by the first and second sheet gripping devices, the preceding sheet is separated through the cutting device. Next, when the second sheet gripping device moves to the retracted position while gripping the trailing edge of the preceding sheet, a new sheet (hereinafter referred to as a succeeding sheet) is joined to the position of the preceding sheet by turning the turret board by 180 °. ) Is arranged.
[0006]
Therefore, the second sheet gripping device moves to the vicinity of the unwinding position while gripping the trailing edge of the preceding sheet, and the leading edge of the subsequent sheet gripped by the new first sheet gripping device and the trailing edge of the preceding sheet And the adhesive tape is affixed integrally to the abutting portion by the adhesive tape affixing device.
[0007]
[Problems to be solved by the invention]
However, in the above-described conventional technique, the second sheet gripping device reciprocates while gripping the rear end of the cut preceding sheet, and the rear end of the preceding sheet is gripped by the first sheet gripping device. It is in contact with the leading edge of the succeeding sheet. For this reason, it has been pointed out that the reciprocating movement takes time and the efficiency of the joining work cannot be easily performed. In addition, gripping of the preceding sheet is likely to occur, and the preceding sheet is liable to be loosened or displaced in the path path, and the abutting accuracy between the trailing edge of the preceding sheet and the leading edge of the succeeding sheet is high. May decrease.
[0008]
Further, a cutting device and an adhesive tape sticking device are integrally provided in the second sheet gripping device, and the entire equipment moves reciprocally. As a result, the entire moving structure becomes complicated and large, and there is a problem that the space for moving equipment is considerably enlarged.
[0009]
The present invention solves this kind of problem, and with a simple and compact configuration, the adhesive tape can be affixed to a desired joining portion with high positioning accuracy, thereby improving the efficiency of the entire joining operation. An object of the present invention is to provide a web joining method and apparatus which can be easily performed.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention is configured such that the first joining base that cuts and holds the rear end of the first web and the second joining base that holds the front end of the second web are relatively close to each other. The rear end of the first web and the front end of the second web are brought into contact with each other. In this state, the tape applying member that cuts and holds the adhesive tape to a dimension corresponding to the joining portion is displaced relatively close to the first and second joining bases, and the adhesive tape is moved to the first web. The rear end and the front end of the second web are attached together.
[0011]
As a result, the first joining table or the second joining table moves only in one direction while holding the first web or the second web, and the first joining table or the second joining table reciprocates. Compared to moving ones, the moving structure itself can be simplified, and the adhesive tape can be attached to a desired joining site automatically and with high positioning accuracy.
[0012]
Further, when the non-adhesive surface of the adhesive tape is adsorbed to the polygonal surface of the polygonal tape application member and the tape application member is rotated in the circumferential direction, the adhesive tape is drawn out from the tape roll and the polygonal surface Wrapped around. Next, for example, the adhesive tape is cut at predetermined lengths along each ridge of the polygonal surface of the tape application member, and is integrally bonded to the rear end of the first web and the front end of the second web. . For this reason, an adhesive tape can be cut | disconnected with high precision for every desired dimension, and a web joining operation | work is performed with high quality.
[0013]
At this time, suction holes that communicate with independent suction chambers are formed for each of the polygonal surfaces. Therefore, the action of adsorbing and holding the adhesive tape and the action of attaching and positioning the cut adhesive tape are reliably performed.
[0014]
Further, the cutting means for cutting the adhesive tape and the cutting blade for cutting the rear end of the first web or the front end of the second web move integrally, so that the efficiency of the entire cutting operation can be improved.
[0015]
Furthermore, the second web roll is disposed at the web supply station, and the second web roll is integrated with the second joining base in a state where the tip of the second web is held by the second joining base. Moved to. Accordingly, the pull-out length of the second web at the time of joining is shortened all at once, and the second web and the first web are smoothly and efficiently prevented from being damaged or meandering. It becomes possible to join.
[0016]
Here, the first and second web rolls are mounted on the turning table, and the first and second web rolls are alternately switched between the web feeding station and the web supply station under the turning action of the turning table. Therefore, the attaching / detaching work of the first and second web rolls is simplified at a stroke.
[0017]
The swivel table is provided with first and second web mounting shafts that are alternately switched between a web supply station and a web feed station, while the web supply station and the web feed station have first and second rotations, respectively. The drive source is fixed. When the first and second web mounting shafts are alternately arranged corresponding to the first and second rotational driving sources under the turning action of the turning table, the first and second transmission means are the first and second transmission means. And a second rotational drive source. Thus, when the first and second web rolls mounted on the first and second web mounting shafts are alternately switched between the web supply station and the web feeding station, the desired first rotation drive source and second rotation are respectively obtained. A predetermined operation is smoothly performed by being connected to the driving source.
[0018]
Furthermore, the rear end of the first web is cut with the first and third joining bases spaced apart from each other, and the end portion of the remaining web protruding from the third joining base is gripped by the clamp mechanism and pulled out. It is carried out. Therefore, the remaining web of the first web roll can be processed automatically and reliably, and the entire web joining operation is automated.
[0019]
Also, a tape member having an adhesive portion and a non-adhesive portion on one side is prepared, and the adhesive portion of the tape member is integrally bonded to the tip of the second web and the outer peripheral surface of the second web roll. Next, the non-adhesive portion of the tape member is gripped by the clamp mechanism, and when the clamp mechanism moves in a predetermined direction, the adhesive portion of the tape member peels from the outer peripheral surface of the second web roll, and the second web is peeled off. It can be pulled out.
[0020]
Then, the second web to which the tape member is bonded is pulled out by a predetermined length and cut, and the tip end side of the second web including the tape member is discarded, while the cut end is disposed after the first web. Hold to be joined to the end. Thereby, the joining preparation work of the 2nd web is automatically performed.
[0021]
At that time, the second web roll bonded to the tape member is rotated, and the second web roll is stopped at the position where the tape member is detected by the sensor, thereby the non-adhesive portion of the tape member via the clamp mechanism. Can be gripped more reliably.
[0022]
Further, the clamp mechanism is stopped at the position where the outer peripheral surface of the second web roll is detected, and after the non-adhesive portion of the tape member is lifted by the suction means, the non-adhesive portion is gripped by the clamp pawl means and a predetermined The second web can be pulled out smoothly and reliably. Next, the second web drawn integrally with the tape member is cut, and the front end side of the second web including the tape member is discharged via the conveying means.
[0023]
Further, in the course of feeding the second web integrally drawn with the tape member to the conveying means, the pass roller moves to forcibly change the drawing path of the second web. For example, the leading end of the second web Is changed to a path along the second joining table that holds This ensures that the cut end of the second web is held on the second joining base.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic front explanatory view of a web joining apparatus 10 according to an embodiment of the present invention.
[0025]
The web joining apparatus 10 includes a base 12, and a main body frame 14 extends in the vertical direction and is fixed on the base 12. On the base 12, a first web roll 16 and a second web roll 18 are mounted, and a transfer mechanism 20 for alternately disposing them on the web feed station ST1 and the web supply station ST2, and the web supply station ST2 A web pulling mechanism 22 for pulling out the second web 18a from the second web roll 18 disposed on the rear, the rear end of the first web 16a cut out by being drawn from the first web roll 16, and the second web roll. A tape sticking mechanism 26 for sticking the adhesive tape 24 in a state in which the tip of the second web 18a pulled out from the face 18 is abutted is disposed.
[0026]
As shown in FIGS. 1 and 2, the transfer mechanism 20 includes a turning motor 28 mounted horizontally on the base 12, and a rotation shaft 28 a of the turning motor 28 is connected to a rotation shaft 28 a via a gear train 30. The pivot shaft 32 is connected. The turning shaft 32 is fixed to the central portion of the turning table 34, and the first web mounting shaft 36 and the second web mounting shaft 38 are located on the turning table 34 at positions symmetrical to each other with the turning shaft 32 interposed therebetween. And can be rotatably mounted.
[0027]
The first and second web mounting shafts 36 and 38 are provided with brake means 42 whose driving is released via the cylinder 40, and the first and second web mounting shafts 36 and 38 have first and second transmissions. As a means, gears 44 and 46 having the same number of teeth and set in the same module are axially attached.
[0028]
A first rotation drive source 48 and a second rotation drive source 50 are fixed to the main body frame 14 corresponding to the web feeding station ST1 and the web supply station ST2. The first rotational drive source 48 is an AC servo motor, and has a function of rotating the first web roll 16 or the second web roll 18 and unwinding the first web 16a or the second web 18a at a constant speed. In addition, since it is necessary to follow a sudden web supply stop at the time of stopping, high power is required. For this reason, as a characteristic required for the 1st rotation drive source 48, precise speed control is possible and it is high power. On the other hand, the second rotational drive source 50 is an AC servo motor, and torque control from a low torque to a high torque is required for peeling a tape member and pulling out a terminal web, which will be described later.
[0029]
Drive gears 52 and 54 are fixed to the rotation shafts 48a and 50a of the first and second rotation drive sources 48 and 50, respectively. The drive gears 52 and 54 are alternately meshed with the gears 44 and 46 of the first and second web mounting shafts 36 and 38 when the turning table 34 is turned by 180 °, thereby driving the first and second rotations. The driving force of the sources 48 and 50 can be transmitted.
[0030]
The swivel table 34 sucks and holds the ends of the first and second webs 16a and 18a drawn from the first and second web rolls 16 and 18 mounted on the first and second web mounting shafts 36 and 38, respectively. A first terminal holding base (third joining base) 56 and a second terminal holding base (second joining base) 58 are arranged in a vertical direction (arrow A direction) and a horizontal direction (through a linear actuator (not shown) such as a cylinder) (see FIG. It is mounted so as to be able to advance and retract in the direction of arrow B). The first and second terminal holding bases 56 and 58 have suction chambers therein and communicate with a vacuum generation source (not shown).
[0031]
As shown in FIG. 1, a joining base (first joining base) 60 for holding the rear end of the first web 16 a fed from the first web roll 16 is disposed on the main body frame 14. Although not shown, the joining base 60 has a suction chamber communicating with a vacuum generation source inside thereof, and can be moved forward and backward in the vertical direction (arrow A direction) via an actuator (not shown) as a displacement means. A tape applying mechanism 26 is mounted above the joining table 60.
[0032]
As shown in FIGS. 1 and 3, the tape sticking mechanism 26 includes a tape sticking member 62 having a polygonal shape, for example, a square cross section. A plurality of suction holes 66a to 66d are formed on the surfaces 64a to 64d of the tape applying member 62, respectively, and the holes 66a to 66d communicate with independent suction chambers 67a to 67d, respectively. Suction chambers 67a to 67d communicate with a vacuum generation source (not shown). On each ridge side of the tape applying member 62, grooves 68a to 68d are formed to a predetermined depth so as to be directed to the center of the tape applying member 62.
[0033]
The tape sticking member 62 is connected to a rotation driving source (not shown) as a rotating means, and is driven to rotate in the direction of the arrow C by 90 °. ).
[0034]
The elevating bracket 71 includes a cutting means 72 for cutting the adhesive tape 24 adsorbed on each surface 64 a to 64 d of the tape applying member 62 into a predetermined length, and a rear end of the first web 16 a held by the joining base 60. A cutting mechanism 74 that cuts the frame is mounted so as to be horizontally movable integrally through the same drive means (not shown). The cutting means 72 includes a tape cutter 78 that is guided by the grooves 68a to 68d of the tape applying member 62 and cuts the adhesive tape 24, while the cutting mechanism 74 is a circular blade that cuts the rear end of the first web 16a. A film cutter (cutting blade) 80 is provided.
[0035]
As shown in FIG. 3, the tape applying mechanism 26 includes a tape delivery portion 82, and a tape roll 86 around which the adhesive tape 24 is wound is attached to a delivery shaft 84 that constitutes the tape delivery portion 82. . Pass rollers 88 and 90 are disposed in front of the tape roll 86 on the drawing side. The pass rollers 90 are disposed on the lifting bracket 71 and are configured to be swingable with the pass roller 88 as a fulcrum. When the elevating bracket 71 moves up and down, the pass roller 90 swings around the pass roller 88 as a fulcrum, and the path length of the adhesive tape 24 is kept constant.
[0036]
The lengths and widths of the surfaces 64a to 64d of the tape applying member 62 are set in advance. Specifically, as shown in FIGS. 4 and 5, the length of the cut adhesive tape 24a is set to L3, and it is between the rear end of the first web 16a and the front end of the second web 18a. A small gap L0 is provided to the first and second webs 16a and 18a for a length L1 and L2, respectively. The width of the adhesive tape 24a is set to W0, and is arranged inward by distances W1 and W2 from both ends in the width direction of the first and second webs 16a and 18a, respectively.
[0037]
As shown in FIGS. 6 and 7, the web pulling mechanism 22 includes a tape member 120 for fixing the tip of the second web 18 a to the outer peripheral surface of the second web roll 18, and the tape member 120 for the second web 18. A clamp mechanism 122 that peels from the outer peripheral surface of the roll 18 and pulls out the second web 18a.
[0038]
The tape member 120 includes an adhesive portion 124 that is integrally bonded to the tip of the second web 18 a and the outer peripheral surface of the second web roll 18, and a non-adhesive portion 126 that protrudes from the outer peripheral surface of the second web roll 18. It is provided on one side. As shown in FIG. 8, the tape member 120 is prepared by preparing a long tape original 128, and dividing the width direction of the tape original 128 into two to apply adhesive glue to one side 130a. And a non-coated portion 130b without glue is provided on the other side, and is wound in a roll shape. The original tape 128 is cut in the width direction (arrow E direction), whereby the tape member 120 is obtained.
[0039]
As shown in FIGS. 6 and 9, the clamping mechanism 122 includes a suction plate (suction means) 132 that sucks the non-adhesive portion 126 of the tape member 120, and an outer periphery of the second web roll 18 that is sucked by the suction plate 132. Clamp claw means 134 for gripping the non-adhesive portion 126 lifted from the surface, a turning motor (swivel means) 136 for turning the clamp claw means 134 holding the non-adhesive portion 126, and adhesion of the tape member 120 In order to separate the portion 124 from the outer peripheral surface of the second web roll 18 and pull out the second web 18a, a moving means 138 for moving the clamp pawl means 134 in a predetermined direction is provided.
[0040]
As shown in FIG. 1, the moving means 138 includes a self-propelled slide unit 142 that can advance and retreat along an X-axis rail 140 that extends in the direction of arrow B, and is supported by the slide unit 142 and extends in the direction of arrow A. An elevating unit 146 that can move up and down along the existing Z-axis rail 144 is provided, and a swing motor 136 is attached to the elevating unit 146. A swing base 148 is fixed to the swing motor 136, and the suction base 132 connected to a vacuum generation source (not shown) is attached to the swing base 148.
[0041]
As shown in FIGS. 6, 9, and 10, a winding diameter detection sensor 150 and a tape terminal detection sensor (tape detection sensor) 152 are mounted on both sides of the suction disk 132. Is composed of a fiber type photoelectric switch. As shown in FIG. 10, a detection rod 154 is disposed in the vicinity of the suction disk 132, and this detection rod 154 is always urged downward via a spring 156. A dog 158 is provided on the upper end side of the detection rod 154, and an outer peripheral surface detection sensor 160 made up of a photoelectric sensor is disposed corresponding to the rising end position of the dog 158.
[0042]
The clamp pawl means 134 includes a fixed clamp pawl 161 fixed to the pivot base 148 and a movable clamp pawl 165 that can pivot via a rotary actuator 163 (see FIG. 6). As shown in FIG. 1, on the downstream side of the second terminal holding table 58, a conveying means 162 that discharges the second web 18 a that is integrally drawn with the tape member 120, and an upstream in the discharging direction from the conveying means 162. And a cutter roller 164 serving as a cutting means for cutting the distal end side of the second web 18a including the tape member 120 under the cooperative action with the second terminal holding table 58.
[0043]
The conveying means 162 includes a driving roller 166 and a nip roller 168 that can move forward and backward with respect to the driving roller 166. On the pull-out path from the second web roll 18 of the second web 18a to the conveying means 162, a pass roller 170 that can be freely advanced and retracted to forcibly change the pull-out path of the second web 18a is disposed.
[0044]
On the web supply station ST2 side, core take-out means 172 for removing the used winding core from the first web mounting shaft 36 or the second web mounting shaft 38 is disposed, while on the tape applying mechanism 26 side, A plurality of pass rollers 176 including a dancer roller 174 are provided.
[0045]
The operation of the web joining apparatus 10 configured as described above will be described below.
[0046]
First, the web joining method according to the present embodiment will be schematically described below.
[0047]
FIG. 11 shows a state during normal operation, in which the first terminal holding base 56 and the joining base 60 are arranged apart from the traveling first web 16a, while the second terminal holding base 58 is The second web 18a, which is a new web, is attracted and held after terminal processing. The first web roll 16 mounted on the first web mounting shaft 36 is rotated in the unwind direction via the gear 44 meshing with the drive gear 52 under the action of the first rotational drive source 48, and the first web 16a. Is running at a constant speed.
[0048]
Next, as shown in FIG. 12, when a predetermined amount of the first web 16a is unwound from the first web roll 16 on the web unwinding station ST1, the unwinding operation of the first web 16a is stopped. At the time of this stop, the operation in the downstream process is stopped or the operation is continued using the first web 16a drawn out by the dancer roller 174.
[0049]
Therefore, the joining base 60 and the first terminal holding base 56 are raised, and the first web 16 a is sucked and fixed under the suction action of the joining base 60 and the first terminal holding base 56. At that time, the joining table 60 and the first terminal holding table 56 are separated by a predetermined distance. In this state, the film cutter 80 constituting the cutting mechanism 74 travels along the joining base 60, and the first web 16a is brought into cooperation with the lower blade surface provided on the upstream end face of the joining base 60. Disconnected. For this reason, the cut end surface of the first web 16 a protrudes from the end surface of the first terminal holding base 56 by a predetermined length.
[0050]
Further, proceeding to FIG. 13, the turning table 34 rotates 180 ° around the turning shaft 32 under the drive action of the turning motor 28, and the second web roll 18 attached to the second web attachment shaft 38 is fed out. On the other hand, the used first web roll 16 is arranged at the station ST1, and the used first web roll 16 is arranged at the web supply station ST2.
[0051]
Next, as shown in FIG. 14, in the state in which the joining base 60 sucks and holds the rear end of the first web 16a, the second terminal holding stand 58 that sucks and holds the tip of the second web 18a is the joining base. Move to 60 side. As a result, the rear end of the first web 16 a that is suction-fixed to the joining base 60 and the tip of the second web 18 a that is suction-fixed to the second terminal holding base 58 are brought into contact with each other.
[0052]
Then, as shown in FIG. 15, the adhesive tape 24a cut to a predetermined length is supplied under the action of the tape applying mechanism 26, and this adhesive tape 24a is connected to the rear end of the first web 16a and the second web. The first and second webs 16a and 18a are bonded together to the tip of 18a and joined together.
[0053]
After the rear end of the first web 16a and the front end of the second web 18a are joined, as shown in FIG. 16, the joining base 60 and the second terminal holding base 58 are released from the adsorbed state to the predetermined standby position. Return. On the other hand, after the first web 16a remaining on the first web roll 16 disposed in the web supply station ST2 is discarded, the core around which the first web 16a is wound is taken from the first web mounting shaft 36. It is taken out (see FIG. 17).
[0054]
On the web supply station ST2 side, the second web roll 18 is mounted as a new web roll on the first web mounting shaft 36, and the second web roll 18 disposed at the web feed station ST1 is a web feed-side roll. As a certain first web roll 16, the first web 16a is sent to a downstream process (see FIG. 18). Further, as shown in FIG. 19, the new second web roll 18 disposed in the web supply station ST <b> 2 is sucked and fixed to the first terminal holding base 56 after the terminal processing of the second web 18 a is performed. Yes.
[0055]
Next, the main part of the web joining method according to the present embodiment will be described in detail.
[0056]
As shown in FIG. 3, the adhesive tape 24 drawn out from the tape roll 86 arranged in the tape delivery part 82 is first adsorbed to the surface 64 a of the tape applying member 62. Therefore, when the tape applying member 62 is rotated in the direction of arrow C by 90 °, the adhesive tape 24 is adsorbed across the surfaces 64 a to 64 c of the tape applying member 62, and the adhesive tape 24 is pulled out from the tape roll 86.
[0057]
When the surface 64a of the tape applying member 62 is disposed at a position facing the first web 16a, the joining base 60 and the first terminal holding base 56 are raised and the joining base 60 and the first terminal holding base 56 The first web 16a is adsorbed. In this state, the tape cutter 78 constituting the cutting means 72 and the film cutter 80 constituting the cutting mechanism 74 move in the width direction of the first web 16a. Therefore, the tape cutter 78 moves along the groove 68b of the tape applying member 62 to cut the adhesive tape 24, and the film cutter 80 is adsorbed by the joining base 60 and the first terminal holding base 56. One web 16a is cut.
[0058]
On the other hand, on the web supply station ST2 side, the second web 18a pulled out from the second web roll 18 is subjected to terminal processing and is sucked and held on the second terminal holding table 58. Therefore, after the turning table 34 is turned 180 ° and the second web roll 18 mounted on the second web mounting shaft 38 is disposed at the web feeding station ST1, as shown in FIG. 58 moves to the joining table 60 side.
[0059]
Thereby, the rear end of the first web 16a sucked and held on the joining base 60 and the front end of the second web 18a sucked and held on the second terminal holding base 58 are brought into contact with each other. Next, the lifting bracket 71 is lowered by a linear drive actuator (not shown), and the cut adhesive tape 24a adsorbed on the surface 64a of the tape applying member 62 is adsorbed on the joining base 60. It is integrally pressed against the rear end and the tip of the second web 18a held by suction on the second terminal holding stand 58.
[0060]
Here, the lowering of the tape applying member 62 is stopped, and the suction action by the suction chamber 67a is released. As a result, the adhesive surface of the cut adhesive tape 24 is integrally bonded to the rear end surface of the first web 16a and the front end surface of the second web 18a, and the first and second webs 16a and 18a are butt-joined. Will be.
[0061]
Next, the tape sticking member 62 rises integrally with the lifting bracket 71, and the tape sticking member 62 further rotates in the direction of arrow C by 90 ° to hold the adhesive tape 24 by suction over the surfaces 64b to 64d.
In this case, the adhesive tape 24 is cut corresponding to the length of the surface 64a of the tape applying member 62, and the joining base 60 and the second terminal holding base 58 (or the first terminal holding base 56) Therefore, it is possible to always maintain a certain positional relationship. For this reason, it is possible to reliably and accurately affix the cut adhesive tape 24a to a desired joining portion in a state where the first and second webs 16a and 18a are abutted with high accuracy. In particular, in a relatively narrow roll film (about 100 mm or less) used for a photographic film processing machine, specifically, as shown in FIGS. 4 and 5, the gap L0 is within 0 to 0.2 mm. The lengths L1, L2 and L3, W0 can be maintained with high accuracy within a certain range (within ± 0.1 mm), and the distances W1, W2 are within 0 to 0.2 mm. Can fit in.
[0062]
Here, when the accuracy of the gap L0 is lowered, the adhesive surface of the adhesive tape 24a is likely to adhere to other members such as a roller and a chute surface, and running failure and jamming are likely to occur. Further, when the accuracy of the distances W1 and W2 is lowered, the joining portion of the first and second webs 16a and 18a is caught by a joint or the like while the web is running, thereby causing jamming. On the other hand, in this embodiment, the effect that it becomes possible to avoid this kind of malfunction effectively and reliably is acquired.
[0063]
Further, in the present embodiment, the tape applying mechanism 26, the cutting mechanism 74, and the joining base 60 are configured to be individually movable, and the joining base 60 cuts and attracts the rear end of the first web 16a. The second terminal holding table 58 that sucks and holds the tip of the second web 18a moves only in one of the horizontal directions (in the direction of arrow B1 in FIG. 20).
[0064]
As a result, the moving structure itself of the joining table 60 is compared with the joining table 60 that reciprocates horizontally in the horizontal direction integrally with the tape applying mechanism 26 and the cutting mechanism 74 in a state where the rear end of the first web 16a is adsorbed. In addition to simplification, the facility movement space can be effectively narrowed. Accordingly, there is an advantage that the entire web bonding apparatus 10 can be effectively downsized and the cut adhesive tape 24a can be automatically and highly accurately attached to a desired bonding site. .
[0065]
Furthermore, in this embodiment, the adhesive tape 24 is wound around each surface 64a to 64d of the tape applying member 62, and the tape cutter 78 constituting the cutting means 72 is moved along the groove portions 68a to 68d formed on each ridge side. The adhesive tape 24 can be accurately cut into a predetermined dimension only.
[0066]
Furthermore, the swivel table 34 is under the drive action of the swivel motor 28 in a state where the second web roll 18 is mounted on the second web mounting shaft 38 and the second web 18a is held by the second terminal holder 58. The second web roll 18 is turned by 180 ° and disposed on the web feeding station ST1 side. Therefore, the length of the second web 18a drawn out at the time of joining is shortened at a stroke, and the second web 18a and the first web 16a can be joined smoothly and efficiently.
[0067]
At that time, the first and second web rolls 16 and 18 are alternately switched to the web feeding station ST1 and the web supply station ST2 under the turning action of the turning table 34. For this reason, the advantage that the attaching / detaching work of the first web roll 16 or the second web roll 18 after use is simplified at a time is obtained.
[0068]
A first rotation drive source 48 and a second rotation drive source 50 having predetermined functions are fixed to the web supply station ST1 and the web supply station ST2 via the main body frame 14, respectively. That is, the first rotational drive source 48 is required to be capable of precise speed control and requires high power, while the second rotational drive source 50 is required to be capable of torque control from high torque to low torque. Yes.
[0069]
Therefore, in the present embodiment, the first and second rotational drive sources 48 and 50 are fixed to the main body frame 14 and the same teeth are attached to the first and second web mounting shafts 36 and 38 mounted on the turning table 34. Gears 44 and 46 having the same number of modules are provided, and each time the turning table 34 is turned by 180 °, the gears 44 and 46 are driven by the drive gear 52 of the first rotation drive source 48 and the second rotation drive. It is configured to be able to mesh with the drive gear 54 of the source 50. Further, the first and second web mounting shafts 36 and 38 are provided with brake means 42, respectively, and when the turning table 34 rotates, the brake means 42 acts to cause the first and second webs to rotate. While the mounting shafts 36 and 38 are in a fixed state, the first and second rotational drive sources 48 and 50 are switched to torque control to produce a small frictional force, and the gears 44 and 46 and the drive gears 52 and 54 The meshing is performed smoothly. Thus, for example, there is no need to mount a large number of motors or an expensive motor having multiple functions on the turning table 34, and an advantage of having a desired function with a simple and inexpensive configuration can be obtained.
[0070]
Next, the operation of the web pulling mechanism 22 will be described in detail.
[0071]
First, terminal processing of the second web roll 18 which is a new web roll mounted on the second web mounting shaft 38 will be described. That is, under the action of the moving means 138 constituting the clamp mechanism 122, the lifting / lowering unit 146 is disposed on the second web roll 18 disposed in the web supply station ST2, and then moves downward. When the winding diameter detection sensor 150 detects the outer circumference of the second web roll 18, the lifting unit 146 further descends while decelerating.
[0072]
Therefore, when the detection rod 154 provided in the vicinity of the suction plate 132 comes into contact with the outer peripheral surface of the second web roll 18 and relatively rises, and the outer surface detection sensor 160 is turned on by the dog 158, The descending of the elevating unit 146 is stopped, the elevating unit 146 is raised by a certain distance, and a certain interval is secured between the elevating unit 146 and the outer peripheral surface of the second web roll 18. At this position, the second web roll 18 is rotated in the direction of arrow F in FIG. 21 integrally with the second web mounting shaft 38 via the second rotational drive source 50. At that time, when the tape end detection sensor 152 detects the tape end 126a of the tape member 120 bonded to the outer periphery of the second web roll 18 by a known detection means, the rotation of the second web roll 18 is stopped. The
[0073]
The lifting unit 146 moves in the lateral direction (arrow X0 direction) and the downward direction (arrow Z direction), and the non-adhesive portion 126 of the tape member 120 is sucked by the suction disk 132 as shown in FIG. Under this action, the turning base 148 is turned by 90 °. As a result, the non-adhesive portion 126 adsorbed by the adsorbing disk 132 is lifted outward from the outer peripheral surface of the second web roll 18.
[0074]
In this state, as shown in FIG. 23, the movable clamp claw 165 constituting the clamp claw means 134 rotates 180 ° under the action of the rotary actuator 163, and the non-adhesive portion 126 is moved between the movable clamp claw 165 and the fixed clamp claw 161. And pinch with. With this posture, the clamp mechanism 122 moves in the lateral direction (arrow X1 direction) and peels the adhesive portion 124 of the tape member 120 from the outer peripheral surface of the second web roll 18. At that time, the rotating shaft (not shown) of the second web roll 18 is fixed by a brake, and the tape mechanism 120 is smoothly peeled off by moving the clamp mechanism 122.
[0075]
As shown in FIG. 24, the clamp mechanism 122 moves in the lateral direction (arrow X2 direction), the downward direction (arrow Z direction), and the lateral direction (arrow X3 direction) while holding the non-adhesive portion 126 of the tape member 120. Then, it passes between the driving roller 166 and the nip roller 168 that constitute the conveying means 162 that are separated from each other and moves to just before the hopper HP. At that time, when the clamp mechanism 122 moves in the arrow Z1 direction, the pass roller 170 moves in the arrow Y direction. Thereby, as shown in FIG. 25, the path route of the second web 18 a pulled out from the second web roll 18 is forcibly changed to be a route along the second terminal holding table 58.
[0076]
Next, the nip roller 168 descends, and the end of the second web 18a is sandwiched between the nip roller 168 and the driving roller 166 (see FIG. 26). Further, the gripping action by the clamp mechanism 122 is released, and the clamp mechanism 122 is raised to a predetermined retracted position and stopped, while the driving roller 166 is rotated and the terminal of the second web 18a to which the tape member 120 is bonded is It is discharged into the hopper HP. At this time, the second web mounting shaft 38 is rotatable so that the second web 18a can be fed out.
[0077]
When the second web 18a is discharged from the second web roll 18 to the hopper HP side for one round of the outer periphery for quality assurance reasons, as shown in FIG. The two-terminal holding stand 58 rises and sucks the second web 18a. In this state, the cutter roller 164 travels, and the second web 18 a is cut by the cutter roller 164 and the side surface of the second terminal holding table 58. After that, while the cutter roller 164 waits at the original position, as shown in FIG. 28, the driving roller 166 is rotated again, and the leading end side of the cut second web 18a including the tape member 120 is discharged to the hopper HP side. Is done. The end of the second web 18a is in a standby state in a state where it is attracted to the second terminal holding stand 58.
[0078]
In this case, in this embodiment, the adhesive portion 124 and the non-adhesive portion 126 are provided on one side of the tape member 120, and the adhesive portion 124 is integrated with the tip of the second web 18 a and the outer peripheral surface of the second web roll 18. The non-adhesive portion 126 protrudes from the outer peripheral surface. Therefore, after the non-adhesive portion 126 is adsorbed and lifted by the suction disk 132 constituting the clamp mechanism 122, the non-adhesive portion 126 can be gripped by the clamp claw means 134, and then the clamp mechanism 122 is The tape member 120 can be automatically and reliably peeled from the outer peripheral surface of the second web roll 18 only by being displaced in the direction of.
[0079]
Further, when pulling out the second web 18 a integrally with the tape member 120 by the clamp mechanism 122, the pass roller 170 is moved to change the pull-out path of the second web 18 a to a path along the second terminal holding table 58. Thereby, the edge part after the cutting | disconnection of the 2nd web 18a can be reliably adsorbed-held with respect to the 2nd terminal holding stand 58. FIG.
[0080]
This makes it possible to automate the work after the tape member 120 is peeled from the outer peripheral surface of the second web roll 18 until the end of the second web 18a is processed, and the efficiency of the entire web joining work can be facilitated. The effect of being carried out is obtained.
[0081]
Next, an operation of disposing the first web 16a at the web supply station ST2 after the first web 16a fed out at the web feeding station ST1 is completed will be described below.
[0082]
First, as shown in FIG. 29, the clamp mechanism 122 moves in the horizontal direction and the vertical direction and grips the end portion of the first web 16 a that is sucked and held by the first terminal holding base 56. Here, as shown in FIG. 3, when the first web 16 a is cut, the end of the first web 16 a protrudes forward from the first terminal holding base 56 by a predetermined length. Therefore, as shown in FIG. 29, the protruding end portion of the first web 16a can be reliably gripped through the clamp mechanism 122.
[0083]
In this state, the first terminal holding base 56 is released from the suction and descends, and as shown in FIG. 30, the clamp mechanism 122 moves to the hopper HP side and pulls out the first web 16a. Next, as shown in FIG. 31, the nip roller 168 descends and the end of the first web 16a is gripped by the nip roller 168 and the driving roller 166, and the clamping mechanism 122 releases the clamping action and waits at a predetermined position. To do. Then, all the remaining first web 16a wound around the winding core under the rotating action of the driving roller 166 is discharged to the hopper HP side (see FIG. 32), and the winding core remaining on the first web mounting shaft 36 is taken out of the core. Retrieved via means 172.
[0084]
In this way, the used first web 16a can be reliably and automatically discharged to the hopper HP side, the entire web joining operation including the web attaching / detaching operation is automated, and the efficiency of the entire web joining operation is improved. The effect that the conversion is easily achieved is obtained.
[0085]
When the first and second webs 16a and 18a to be joined are wide, that is, when W0> L3 in FIG. 4, the tape applying mechanism 26 is moved by 90 ° around the vertical axis in FIG. Can be rotated. In particular, when W0 is 10 cm or more, since it is difficult to supply the adhesive tape 24 having a width of W0, the tape applying mechanism 26 may be installed in a state rotated by 90 °. At this time, the moving directions of the tape cutter 78 and the film cutter 80 are different, and it is necessary to use separate driving means.
[0086]
【The invention's effect】
As described above, in the web joining method and apparatus according to the present invention, the first and second webs are integrated via the adhesive tape in a state where the rear end of the first web and the front end of the second web are abutted. Can be joined. As a result, the rear end of the first web and the front end of the second web can be brought into contact with each other with high accuracy, and the adhesive surface does not come into contact with other members. In addition, it is possible to reliably prevent jamming from occurring due to the joining portion of the first web and the second web being caught by a joint or the like.
[0087]
Further, the first joining table or the second joining table moves only in one direction while holding the first web or the second web, and the first joining table or the second joining table moves reciprocally. The moving structure itself can be simplified as compared with the above, and the adhesive tape can be attached to a desired joining portion automatically and with high positioning accuracy.
[Brief description of the drawings]
FIG. 1 is a schematic configuration explanatory diagram of a web joining apparatus according to an embodiment of the present invention.
FIG. 2 is a partial cross-sectional plan view of a turning table and a transfer mechanism constituting the web joining apparatus.
FIG. 3 is a schematic configuration explanatory diagram of a tape applying mechanism constituting the web joining apparatus.
FIG. 4 is a plan view of a web joined by the tape applying mechanism.
FIG. 5 is a side view of a web joined by the tape applying mechanism.
FIG. 6 is an explanatory perspective view of a main part of a web pulling mechanism constituting the web joining apparatus.
FIG. 7 is a schematic side view of the web pulling mechanism.
FIG. 8 is an explanatory diagram of making a tape member used in the web pulling mechanism.
FIG. 9 is an explanatory front view of a main part of the web pulling mechanism.
10 is an explanatory side view of FIG. 9. FIG.
FIG. 11 is a front explanatory view during normal operation.
FIG. 12 is an explanatory diagram when cutting the terminal of the feeding-side web.
FIG. 13 is an explanatory diagram when the turning table is turned by 180 °.
FIG. 14 is an explanatory diagram when the terminals of the web are brought into contact with each other.
FIG. 15 is an explanatory diagram when joining the butted terminals together.
FIG. 16 is an explanatory view after the joining process.
FIG. 17 is an explanatory diagram of processing of a used web.
FIG. 18 is an explanatory diagram showing a state in which a new web is arranged.
FIG. 19 is an explanatory diagram after terminal processing of a newly arranged web.
FIG. 20 is an operation explanatory diagram of the tape attaching mechanism.
FIG. 21 is an explanatory diagram when a tape member of a new web roll is detected.
FIG. 22 is an explanatory view when the tape member is adsorbed by a clamp mechanism.
FIG. 23 is an explanatory diagram when the tape member is lifted after adsorbing the tape member.
FIG. 24 is an operation explanatory view after the tape member is peeled from the outer peripheral surface of the web roll.
FIG. 25 is an explanatory diagram of a route change when the web is pulled out.
FIG. 26 is an explanatory view when the pulled-out web is discharged by a predetermined length.
FIG. 27 is an explanatory diagram when cutting the web discharged by the predetermined length.
FIG. 28 is an explanatory diagram of a web holding state after the cutting.
FIG. 29 is an explanatory diagram when a used web is gripped by a clamp mechanism.
FIG. 30 is an explanatory view when the clamp mechanism that holds the used web is moved.
FIG. 31 is an explanatory diagram when the used web is delivered to a conveying means.
FIG. 32 is an explanatory view when all the webs delivered to the conveying means are discharged.
[Explanation of symbols]
10 ... Web joining device 14 ... Body frame
16, 18 ... Web roll 16a, 18a ... Web
20 ... Transfer mechanism 22 ... Web drawer mechanism
24 ... Adhesive tape 26 ... Tape application mechanism
28, 136 ... turning motor 34 ... turning table
36, 38 ... Web mounting shaft 48, 50 ... Rotation drive source
56, 58 ... Terminal holding stand 60 ... Joining stand
62 ... Tape application member 64a to 64d ... surface
66a to 66d ... hole 67a to 67d ... suction chamber
68a-68d ... groove part 70 ... displacement means
71 ... Lifting bracket 72 ... Cutting means
74 ... Cutting mechanism 82 ... Tape delivery section
120 ... tape member 122 ... clamp mechanism
124 ... Adhesive part 126 ... Non-adhesive part
132 ... Adsorption board 134 ... Clamp claw means
138 ... Moving means 150, 152, 160 ... Sensor
161: Fixed clamp claw 165: Movable clamp claw
170, 176 ... Pass rollers

Claims (26)

A web joining method in which a rear end of a first web and a front end of a second web used instead of the first web are butted against each other.
Placing the first web roll wound with the first web at a web feed station, and placing the second web roll wound with the second web at a web supply station;
Fixing the rear end of the first web with a first joining base and a third joining base separated from each other by a predetermined interval;
Automatically cutting a rear end of the first web at a predetermined position;
While for holding the cut trailing end of the first web to the first joining base, the step of holding the second web of the tip to the second joint block,
The first web roll is moved integrally with the third joining table to the web supply station, and the second web roll is moved integrally with the second joining stand to the web feeding station, Placing a joining table opposite to the first joining table;
A process of holding the adhesive tape on the tape application member in a state where the adhesive tape is cut into a dimension corresponding to the shape of the joining part
The second joining table is displaced in proximity to the first joining table, and a leading end of the second web held on the second joining table and a rear end of the first web held on the first joining table are arranged. A process of matching each other,
The first and second joining bases and the tape application member are displaced relatively close to each other, whereby the rear end of the first web and the second web of the second web are held by the adhesive tape held by the tape application member. A step of integrally joining the tip;
A step of automatically discharging the remaining web by moving the clamp mechanism in a state where the end of the remaining web is gripped by the clamp mechanism;
A web joining method characterized by comprising: The web bonding method according to claim 1, wherein the non-adhesive surface of the adhesive tape is adsorbed to the polygonal surface of the polygonal tape application member;
By rotating the tape sticking member in its circumferential direction, winding the pressure-sensitive adhesive tape around the polygonal surface, and feeding the pressure-sensitive adhesive tape from a tape roll;
Cutting the adhesive tape into a predetermined length, and attaching the adhesive surface of the cut adhesive tape integrally to the rear end of the first web and the front end of the second web;
A web joining method characterized by comprising:   3. The web joining method according to claim 2, wherein the adhesive tape is cut along each ridge of the polygonal surface of the tape application member.   2. The web joining method according to claim 1, wherein the first and second web rolls are connected to the web feeding station and the web supply station under a turning action of a turning table on which the first and second web rolls are mounted. A web joining method characterized by being alternately replaced. And a second web of the tip to be used in place of the rear end of the first web first web, a web joining method for joining abutting each other,
Preparing a tape member having an adhesive part and a non-adhesive part on one side ;
Adhering the adhesive portion of the tape member integrally to the tip of the second web and the outer peripheral surface of the second web roll for feeding out the second web ;
Together is disposed in the web feeding station a first web roll first web is wound, a step of Ru is arranged a second web roll second web is wound into a web supply station,
Gripping the non-adhesive part of the tape member with a clamp mechanism;
A step of automatically peeling the adhesive portion of the tape member from the outer peripheral surface of the second web roll and moving the second web out by moving the clamp mechanism in a predetermined direction;
Holding the rear end of the first web cut on the first joining table, and holding the tip of the second web on the second joining table;
Moving the second web roll to the web feed station integrally with the second joining table, and placing the second joining table facing the first joining table;
A process of holding the adhesive tape on the tape application member in a state where the adhesive tape is cut into a dimension corresponding to the shape of the joining part
The second joining table is displaced in proximity to the first joining table, and a leading end of the second web held on the second joining table and a rear end of the first web held on the first joining table are arranged. A process of matching each other,
The first and second joining bases and the tape application member are displaced relatively close to each other, whereby the rear end of the first web and the second web of the second web are held by the adhesive tape held by the tape application member. A step of integrally joining the tip;
A web joining method characterized by comprising: In the web joining method according to claim 1, a step of preparing a tape member having an adhesive portion and a non-adhesive portion on one side;
Adhering the adhesive portion of the tape member integrally to the tip of the second web and the outer peripheral surface of the second web roll for feeding out the second web;
Gripping the non-adhesive part of the tape member with a clamp mechanism;
A step of automatically peeling the adhesive portion of the tape member from the outer peripheral surface of the second web roll and moving the second web out by moving the clamp mechanism in a predetermined direction;
A web joining method characterized by comprising: The web joining method according to claim 5 or 6, wherein the second web that is pulled out by a predetermined length integrally with the tape member is cut, and a tip side of the second web including the tape member is discharged. On the other hand, it has the process of hold | maintaining the cutting | disconnection edge part of this 2nd web with the said 2nd joining stand, The web joining method characterized by the above-mentioned.   7. The web joining method according to claim 6, wherein the second web roll to which the tape member is bonded is rotated, and the second web roll is stopped at a position where the tape member is detected by a sensor, and then the tape member. A web joining method comprising the step of gripping the non-adhesive part of the film with a clamp mechanism. The web joining method according to claim 6, wherein the clamp mechanism is moved to the outer peripheral surface side of the second web roll, and the clamp mechanism is stopped after detecting the outer peripheral surface;
Adsorbing and lifting the non-adhesive part of the tape member with the adsorbing means of the clamp mechanism;
The lifted non-adhesive portion is gripped by the clamping claw means of the clamp mechanism, and the clamping claw means is moved in a predetermined direction, whereby the adhesive surface of the tape member is peeled from the outer peripheral surface of the second web roll. And pulling out the second web;
A web joining method characterized by comprising: The web joining method according to claim 6 or 9, wherein the second web drawn integrally with the tape member is sent to a conveying means, and the gripping action by the clamp mechanism is released.
Cutting the second web upstream of the conveying means in the discharge direction;
Discharging the second web tip side including the tape member under the action of the conveying means;
A web joining method characterized by comprising:   11. The web joining method according to claim 10, wherein a path roller is moved to forcibly change a drawing path of the second web while the second web drawn integrally with the tape member is sent out to a conveying means. A web joining method characterized by the above. A web joining device for joining a rear end of a first web and a front end of a second web used in place of the first web by abutting each other,
A web feeding station where a first web roll around which the first web is wound is disposed;
A web supply station on which a second web roll around which the second web is wound is disposed;
A first joining table for cutting and holding the cut rear end of the first web;
A second joining base for holding the tip of the second web;
A third joining base for fixing the rear end of the first web at a predetermined distance from the first joining base;
Moving the first web roll integrally with the third joining table to the web supply station and moving the second web roll integrally with the second joining stand to the web feeding station; the second joining base for holding the second web of the tip, a transfer mechanism for disposed facing the first joining base for holding the severed trailing end of the first web,
A displacement means for displacing the second joining base close to the first joining base in order to abut the rear end of the first web and the front end of the second web;
A tape applying mechanism for holding the adhesive tape in a state of being cut to a size corresponding to the shape of the joining portion, and attaching the adhesive tape integrally to a rear end of the first web and a front end of the second web;
A clamping mechanism for gripping an end portion of the remaining web, automatically pulling out the remaining web and discharging it;
A web joining apparatus comprising: The web bonding apparatus according to claim 12, wherein the tape application mechanism includes a polygonal tape application member provided with a polygonal surface for adsorbing and holding the non-adhesive surface of the adhesive tape;
Rotating means for rotating the tape sticking member in the circumferential direction in order to wind the adhesive tape around the polygonal surface and feed the adhesive tape out of the tape roll;
Cutting means for cutting the adhesive tape into a predetermined length;
Displacement means for advancing and retracting the tape application member to integrally attach the cut adhesive tape to the rear end of the first web and the front end of the second web;
A web joining apparatus comprising:   14. The web joining apparatus according to claim 13, wherein a groove for guiding the cutting means is formed on each ridge of the polygonal surface of the tape applying member.   14. The web joining apparatus according to claim 13, wherein the cutting means is configured to be movable integrally with a cutting blade for cutting a rear end of the first web or a front end of the second web. Joining device.   14. The web joining apparatus according to claim 13, wherein the tape sticking member has suction holes on each surface and has an independent suction chamber communicating with each hole on each surface. Web joining device. 13. The web joining apparatus according to claim 12, wherein the transfer mechanism is a swivel table that can swivel under the action of a rotational drive source;
Provided on the turning table, the first and second web rolls are rotatably mounted, and the web feeding station and the web supply station are alternately switched when the turning table turns by a predetermined angle. First and second web mounting shafts;
A web joining apparatus comprising: 18. The web joining apparatus according to claim 17, wherein a first rotational drive source fixed corresponding to the web supply station;
A second rotational drive source fixed corresponding to the web delivery station;
First and second transmission means provided on the first and second web mounting shafts and connectable to any of the first and second rotational drive sources;
A web joining apparatus comprising: The web joining apparatus according to claim 12, wherein a third joining base that fixes a rear end of the first web at a predetermined distance from the first joining base;
A cutting mechanism that cooperates with the third joining table to cut the rear end of the first web at a position protruding from the first joining table by a predetermined length;
A web joining apparatus comprising: A web joining device for joining a rear end of a first web and a front end of a second web used in place of the first web by abutting each other,
A web feeding station where a first web roll around which the first web is wound is disposed;
A web supply station on which a second web roll around which the second web is wound is disposed;
An adhesive portion that is integrally bonded to an outer peripheral surface of the second web roll from which the tip of the second web and the second web are fed, and a non-adhesive portion that protrudes from the outer peripheral surface of the second web roll are provided. A tape member;
A clamp mechanism for gripping the non-adhesive part of the tape member, automatically peeling the adhesive part of the tape member from the outer peripheral surface of the second web roll, and pulling out the second web ;
A first joining table for cutting and holding the cut rear end of the first web;
A second joining base for holding the tip of the second web;
After the second web roll is moved to the web feed station integrally with the second joining table, the second joining table holding the tip of the second web is cut off from the first web. A transfer mechanism arranged to face the first joining table holding the end;
A displacement means for displacing the second joining base close to the first joining base in order to abut the rear end of the first web and the front end of the second web;
A tape applying mechanism for holding the adhesive tape in a state of being cut to a size corresponding to the shape of the joining portion, and attaching the adhesive tape integrally to a rear end of the first web and a front end of the second web;
A web joining apparatus comprising: 13. The web joining apparatus according to claim 12, wherein an adhesive portion integrally bonded to a tip end of the second web and an outer peripheral surface of the second web roll from which the second web is fed and an outer peripheral surface of the second web roll. A tape member provided with a protruding non-adhesive part;
A clamp mechanism for gripping the non-adhesive part of the tape member, peeling the adhesive part of the tape member from the outer peripheral surface of the second web roll, and pulling out the second web;
A web joining apparatus comprising: The web joining apparatus according to claim 20 or 21, wherein the clamp mechanism includes an adsorbing means for adsorbing a non-adhesive portion of the tape member;
Clamp claw means for gripping the non-adhesive portion that is sucked by the suction means and lifted from the outer peripheral surface of the second web roll;
Swivel means for swiveling the clamping claw means for gripping the non-adhesive part;
Moving means for moving the clamp claw means in a predetermined direction to separate the adhesive surface of the tape member from the outer peripheral surface of the second web roll and pull out the second web;
A web joining apparatus comprising:   23. The web joining apparatus according to claim 21, wherein the clamp mechanism includes a tape detection sensor that detects the tape member.   23. The web joining apparatus according to claim 21, wherein the clamp mechanism includes an outer peripheral surface detection sensor that detects an outer peripheral surface of the second web roll. The web joining apparatus according to claim 20 or 21, wherein a conveying means for discharging the second web drawn integrally with the tape member;
Cutting means for cutting the tip end side of the second web including the tape member under the cooperative action with the second joining base disposed on the upstream side in the discharge direction from the conveying means;
A web joining apparatus comprising:   26. The web joining apparatus according to claim 25, wherein in the course of feeding the second web that is pulled out integrally with the tape member to a conveying means, the drawing path of the second web is changed to a path along the second joining base. A web joining apparatus comprising a pass roller which can be forcibly changed and can be moved forward and backward.

Images