Bonding apparatus

Abstract

To suppress uneven application of an adhesive.SOLUTION: A bonding apparatus comprises: a tape conveying device that conveys a base tape; an adhesive application device that includes a coating nozzle having a discharge port for discharging an adhesive, and applies the adhesive to the coating surface of the base tape in a state where the base tape is conveyed in the normal direction to produce an adhesive tape; a press-bonding device that includes a first press-bonding roller and a second press-bonding roller which press the adhesive tape and a sheet in a state where the adhesive tape is conveyed in the forward direction and a heating device that heats the adhesive tape before the adhesive tape enters between the first press-bonding roller and the second press-bonding roller, and joins the adhesive tape and the sheet; and a controller that outputs control signals to control the tape conveying device, the adhesive application device, and the press-bonding device. The controller stops the driving of the tape conveying device, the adhesive application device, and the press-bonding device, drives the tape conveying device so that the base tape moves in the reverse direction by a predetermined distance, and then stops the driving of the tape conveying device.SELECTED DRAWING: Figure 22

Description

Technical Field

[0001] The technology disclosed in this specification relates to a bonding apparatus.

Background Art

[0002] In the technical field related to manufacturing apparatuses for sewn products, a bonding apparatus that heats an adhesive tape and adheres it to a sheet, as disclosed in Patent Document 1, is known. The bonding apparatus includes a nozzle that injects hot air and a pair of rollers that join the adhesive tape heated by the hot air and the sheet.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The adhesive tape has a base tape and an adhesive applied to the base tape. There is a need for a technology to suppress uneven application of the adhesive.

[0005] The technology disclosed in this specification aims to suppress uneven application of the adhesive.

Means for Solving the Problems

[0006] This specification discloses a bonding apparatus. The bonding apparatus includes a tape conveyance device for conveying a base tape, a coating nozzle having a discharge port for discharging an adhesive, and an adhesive coating device that coats the adhesive on the coating surface of the base tape to generate an adhesive tape while the base tape is being conveyed in the forward direction. The bonding apparatus further includes a first crimping roller and a second crimping roller that press the adhesive tape and a sheet while the adhesive tape is being conveyed in the forward direction, and a heating device that heats the adhesive tape before the adhesive tape enters between the first crimping roller and the second crimping roller. The bonding apparatus also includes a crimping device that joins the adhesive tape and the sheet, and a controller that outputs a control signal for controlling the tape conveyance device, the adhesive coating device, and the crimping device. The controller stops the driving of each of the tape conveyance device, the adhesive coating device, and the crimping device, drives the tape conveyance device so that the base tape moves a predetermined distance in the reverse direction, and then stops the driving of the tape conveyance device.

Advantages of the Invention

[0007] According to the technology disclosed in this specification, uneven application of the adhesive is suppressed.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

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Figure 8

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Figure 11

Figure 12

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Figure 18

Figure 19

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Figure 22

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Figure 25

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments will be described with reference to the drawings. In the embodiments, the terms left, right, front, rear, upper, and lower are used to describe the positional relationships of the respective parts. These terms indicate relative positions or directions with reference to the center of the bonding device 1.

[0010] [First Embodiment] The first embodiment will be described.

[0011] <Overview of the Bonding Device> FIG. 1 is a view of the bonding device 1 according to the present embodiment as seen from the rear left. FIG. 2 is a view of the bonding device 1 according to the present embodiment as seen from the rear. FIG. 3 is a view of the bonding device 1 according to the present embodiment as seen from the left. FIG. 4 is a block diagram showing the bonding device 1 according to the present embodiment.

[0012] The bonding device 1 heats the adhesive tape T and adheres it to the sheet M. The bonding device 1 includes a base 2, a body 3, a support mechanism 4, a tape conveyance device 5, an adhesive application device 6, a pressure bonding device 7, an operation panel 8, an operation pedal 9, an air jet cooler 10, and a controller 11.

[0013] The bonding device 1 is supported by a workbench 12. The workbench 12 has a top plate 12A on which the base 2 is placed, a plurality of leg members 12B that support the top plate 12A, and a bottom plate 12C disposed between the plurality of leg members 12B.

[0014] The body 3 is supported by the base 2. The body 3 has a stand portion 3A supported by the base 2 and an arm portion 3B supported by the stand portion 3A. The arm portion 3B is disposed above the base 2.

[0015] The support mechanism 4 is supported by the body 3. The support mechanism 4 is supported at the left end of the arm portion 3B. The support mechanism 4 supports each of the tape conveyance device 5, the adhesive application device 6, and the crimping device 7. At least a part of the support mechanism 4 is covered by the cover 13. The cover 13 includes a first cover 13A, a second cover 13B, and a third cover 13C.

[0016] The tape conveyance device 5 conveys the base material tape Tb wound around the reel 14 to the crimping device 7. The tape conveyance device 5 has a first drive roller 15, a second drive roller 16, and a third drive roller 17.

[0017] The adhesive application device 6 applies the adhesive Tg to the base material tape Tb in a state where the base material tape Tb is being conveyed by the tape conveyance device 5. The adhesive application device 6 applies the adhesive Tg to the base material tape Tb before the base material tape Tb is conveyed to the crimping device 7. By applying the adhesive Tg to the base material tape Tb, an adhesive tape T is generated. The adhesive application device 6 has a pump 37 that drives to supply the adhesive Tg to the base material tape Tb, and a valve 38 that can cut off the supply of the adhesive Tg. The adhesive tape T generated in the adhesive application device 6 is conveyed to the crimping device 7 by the tape conveyance device 5.

[0018] The crimping device 7 joins the adhesive tape T and the sheet M. The crimping device 7 has a heating nozzle 40, a first crimping roller 41, a second crimping roller 42, a first support member 43, a second support member 44, and a lifting actuator 45.

[0019] The heating nozzle 40 functions as a heating device that heats the adhesive tape T before the adhesive tape T enters between the first crimping roller 41 and the second crimping roller 42. The heating nozzle 40 injects hot air for heating the adhesive tape T.

[0020] The first crimping roller 41 and the second crimping roller 42 press the adhesive tape T heated by the heating nozzle 40 and the sheet M to join the adhesive tape T and the sheet M.

[0021] The first support member 43 rotatably supports the first crimping roller 41. The second support member 44 rotatably supports the second crimping roller 42. The lifting actuator 45 generates power to move the first support member 43 in the vertical direction.

[0022] The operation panel 8 is operated by the operator of the bonding device 1. The operation panel 8 is disposed on the upper portion of the stand portion 3A. The operation panel 8 has a display device and an input device. The display device includes a flat panel display such as a liquid crystal display, for example. The input device includes a touch sensor. In the present embodiment, the operation panel 8 includes a touch panel. When the operation panel 8 is operated by the operator, an operation signal is transmitted from the operation panel 8 to the controller 11.

[0023] The operation pedal 9 is operated by the operator of the bonding device 1. The operation pedal 9 is operated by the operator's foot. The operation pedal 9 is disposed on the bottom plate 12C. The operation pedal 9 is operated to switch between driving and stopping the bonding device 1. When the operation pedal 9 is operated by the operator, an operation signal is transmitted from the operation pedal 9 to the controller 11. When the operation pedal 9 is operated, each of the tape conveyance device 5, the adhesive application device 6, and the crimping device 7 is driven. When the operation of the operation pedal 9 is released, the driving of each of the tape conveyance device 5, the adhesive application device 6, and the crimping device 7 stops.

[0024] The air jet cooler 10 supplies cold air. In the present embodiment, the air jet cooler 10 supplies compressed cooling air as the cold air.

[0025] The controller 11 outputs a control signal for controlling the bonding apparatus 1. The controller 11 includes a computer system. The controller 11 has a processor 111 such as a CPU (Central Processing Unit), a memory 112 such as a ROM (Read Only Memory) or a RAM (Random Access Memory), and a storage 113. The functions of the controller 11 are stored in the storage 113 as a computer program. The processor 111 reads the computer program from the storage 113 and expands it into the memory 112, and executes processing according to the computer program. Note that the computer program may be distributed to the controller 11 via a network.

[0026] <Adhesive tape> FIG. 5 is a side view schematically showing the adhesive tape T and the sheet M according to the present embodiment. FIG. 6 is a plan view schematically showing the adhesive tape T and the sheet M according to the present embodiment.

[0027] The adhesive tape T has a base tape Tb and an adhesive Tg applied to the application surface of the base tape Tb. The application surface of the base tape Tb is either one of the front and back surfaces of the base tape Tb. The base tape Tb is made of a synthetic resin.

[0028] The base tape Tb is conveyed by the tape conveyance device 5 through the adhesive application device 6 to the crimping device 7. The adhesive application device 6 applies the adhesive Tg to the application surface of the base tape Tb while the base tape Tb is being conveyed by the tape conveyance device 5. The adhesive application device 6 applies the adhesive Tg to the application surface of the base tape Tb before the base tape Tb is conveyed to the crimping device 7. The base tape Tb and the sheet M are joined via the adhesive Tg. The adhesive Tg is thermoplastic. The adhesive Tg melts when heated. The adhesive Tg exhibits adhesive force by curing in a state of being in contact with the sheet M.

[0029] In this embodiment, the adhesive Tg is a reactive polyurethane (PUR: Poly Urethane Reactive) moisture-curing hot melt adhesive. The adhesive Tg cures upon exposure to moisture. The adhesive Tg undergoes primary curing by cooling and secondary curing by moisture. The adhesively Tg in the state of primary curing can return to the molten state when heated. The adhesively Tg in the state of secondary curing cannot return to the molten state even when heated. The tape conveyance device 5 conveys the adhesive tape T to the crimping device 7 before the adhesive Tg applied to the base tape Tb by the adhesive application device 6 undergoes secondary curing.

[0030] The sheet M is used for clothing. The sheet M only needs to be joinable with the adhesive tape T. The sheet M may be a cloth, a vinyl sheet, or a rubber sheet. The cloth may be a woven fabric or a non-woven fabric.

[0031] As shown in FIG. 6, a seam St is formed in the sheet M. The seam St is formed in the sheet M by a sewing machine (not shown). In this embodiment, the crimping device 7 joins the adhesive tape T and the sheet M so that the seam St is covered with the adhesive tape T. When waterproofness is required for the clothing, covering the seam St with the adhesive tape T suppresses rainwater from passing through the sheet M via the seam St.

[0032] In this embodiment, the adhesive tape T and the sheet M are joined so that the adhesive Tg slightly protrudes from the edge in the short-side direction of the base tape Tb. By the secondary curing of the adhesive Tg slightly protruding from the edge in the short-side direction of the base tape Tb, peeling of the adhesive tape T from the sheet M is suppressed. For example, even if the edge of the base tape Tb is scratched by a fingernail or the like by the user of the clothing, peeling of the adhesive tape T from the sheet M is suppressed.

[0033] <Tape Conveyance Device> FIG. 7 is a view of the bonding apparatus 1 according to the present embodiment as seen from the left. FIG. 8 is a view of the bonding apparatus 1 according to the present embodiment as seen from the left front. Each of FIGS. 7 and 8 shows a state in which the cover 13 is removed from the support mechanism 4.

[0034] The tape conveyance device 5 includes a first drive roller 15, a guide rod 19A, a guide rod 19B, a driven roller 20, a second drive roller 16, a driven roller 21, a driven roller 22, a driven roller 23, a tension adjustment roller 18, a driven roller 24, a driven roller 25, a driven roller 26, a driven roller 27, a third drive roller 17, a guide rod 19C, and a driven roller 28.

[0035] The base tape Tb is wound around a reel 14. The reel 14 is rotatably supported above the first support member 4A of the support mechanism 4. The reel 14 rotates about a reel rotation axis extending in the left-right direction to pay out the base tape Tb. The base tape Tb paid out from the reel 14 is conveyed toward the crimping device 7.

[0036] In the following description, in the conveyance path of the adhesive tape T, a position close to the reel 14 or a direction approaching it is appropriately referred to as the upstream side, and a position close to the crimping device 7 or a direction approaching it is appropriately referred to as the downstream side.

[0037] Also, in the following description, the direction in which the base tape Tb is conveyed from the reel 14 toward the crimping device 7 is appropriately referred to as the forward direction, and the reverse direction of the forward direction is appropriately referred to as the reverse direction.

[0038] The tape conveyance device 5 can convey the base tape Tb in each of the forward and reverse directions. When at least one of the first drive roller 15, the second drive roller 16, and the third drive roller 17 rotates forward, the base tape Tb is conveyed in the forward direction. When at least one of the first drive roller 15, the second drive roller 16, and the third drive roller 17 rotates reversely, the base tape Tb is conveyed in the reverse direction.

[0039] In the conveyance path of the adhesive tape T, among the first drive roller 15, the second drive roller 16, the tension adjustment roller 18, and the third drive roller 17, the third drive roller 17 is arranged on the most downstream side, the tension adjustment roller 18 is arranged downstream of the third drive roller 17, the second drive roller 16 is arranged downstream of the tension adjustment roller 18, and the first drive roller 15 is arranged on the most upstream side. The base tape Tb unwound from the reel 14 is conveyed in the forward direction so as to pass through the first drive roller 15, the guide rod 19A, the guide rod 19B, the driven roller 20, the second drive roller 16, the driven roller 21, the driven roller 22, the driven roller 23, the tension adjustment roller 18, the driven roller 24, the driven roller 25, the driven roller 26, the driven roller 27, the third drive roller 17, the guide rod 19C, and the driven roller 28 in sequence, and then supplied to the crimping device 7.

[0040] The first drive roller 15 is arranged on the downstream side of the reel 14 in the conveyance path of the base tape Tb. The first drive roller 15 is arranged immediately after the reel 14 in the conveyance path of the base tape Tb. The first drive roller 15 is arranged below the reel 14. The first drive roller 15 is rotatably supported by the second support member 4B of the support mechanism 4. The first drive roller 15 rotates forward so that the base tape Tb is conveyed to the crimping device 7 via the adhesive application device 6. The first drive roller 15 is connected to a first drive motor (not shown). The first drive roller 15 rotates forward or reversely by the rotational force generated by the first drive motor. A pinch roller 15A is arranged at a position facing the first drive roller 15. The first drive roller 15 rotates with the base tape Tb sandwiched between it and the pinch roller 15A.

[0041] Each of the guide rod 19A, the guide rod 19B, and the driven roller 20 supports the base tape Tb. In the conveyance path of the base tape Tb, each of the guide rod 19A, the guide rod 19B, and the driven roller 20 is disposed between the first drive roller 15 and the second drive roller 16. Each of the guide rod 19A and the guide rod 19B is disposed below the first drive roller 15. The guide rod 19B is disposed in front of the guide rod 19A. The driven roller 20 is disposed below the guide rod 19A and the guide rod 19B. Each of the guide rod 19A and the guide rod 19B is supported by the second support member 4B of the support mechanism 4. The driven roller 20 is rotatably supported by the third support member 4C of the support mechanism 4. The driven roller 20 is disposed in front of the second drive roller 16.

[0042] The second drive roller 16 is disposed on the downstream side of the driven roller 20 in the conveyance path of the base tape Tb. The second drive roller 16 is rotatably supported by the third support member 4C of the support mechanism 4. The driven roller 20 is disposed in front of the adhesive applicator 6. The second drive roller 16 is disposed behind the adhesive applicator 6. After the base tape Tb passes through the driven roller 20, the adhesive Tg is applied to the base tape Tb by the adhesive applicator 6. The second drive roller 16 rotates forward so that the adhesive tape T generated by applying the adhesive Tg to the base tape Tb is conveyed to the crimping device 7. The second drive roller 16 is connected to a second drive motor (not shown). The second drive roller 16 rotates forward or backward by the rotational force generated by the second drive motor.

[0043] The surface of the second drive roller 16 that contacts the base tape Tb is made of rubber. The frictional force of the surface of the second drive roller 16 with respect to the base tape Tb is large. The frictional force of the surface of the second drive roller 16 is larger than the frictional force of the surface of the first drive roller 15 and the frictional force of the surface of the third drive roller 17. Since the frictional force of the surface of the second drive roller 16 with respect to the base tape Tb is large, the second drive roller 16 can convey the base tape Tb even without a pinch roller at a position facing the second drive roller 16.

[0044] Each of the driven rollers 21, 22, and 23 supports the adhesive tape T. In the conveyance path of the base material tape Tb, each of the driven rollers 21, 22, and 23 is disposed between the second drive roller 16 and the tension adjustment roller 18. The driven roller 21 is disposed below the second drive roller 16. The driven roller 22 is disposed forward and above the driven roller 21. The driven roller 23 is disposed forward and above the driven roller 22. The driven roller 21 is supported by the third support member 4C of the support mechanism 4. The driven rollers 22 and 23 are supported by the first support member 4A of the support mechanism 4. The driven roller 23 is supported at the upper end of the first support member 4A.

[0045] The tension adjustment roller 18 supports the adhesive tape T. The tension adjustment roller 18 adjusts the tension applied to the adhesive tape T. The tension adjustment roller 18 is disposed below the driven roller 23. The tension adjustment roller 18 is supported by the first support member 4A so as to be swingable in the vertical direction. A guide 29 is provided at the lower part of the first support member 4A. The guide 29 guides the tension adjustment roller 18 in the vertical direction. When the tension adjustment roller 18 swings in the vertical direction, the tension applied to the adhesive tape T is adjusted. The tension adjustment roller 18 swings in the vertical direction so that the tension applied to the adhesive tape T does not become excessively large.

[0046] Each of the driven rollers 24, 25, 26, and 27 supports the adhesive tape T. In the conveyance path of the base tape Tb, each of the driven rollers 24, 25, 26, and 27 is disposed between the tension adjustment roller 18 and the third drive roller 17. The driven roller 24 is disposed forward and above the tension adjustment roller 18. The driven roller 25 is disposed forward and below the driven roller 24. The driven roller 26 is disposed forward and above the driven roller 25. The driven roller 27 is disposed forward and above the driven roller 26. The driven roller 24 is supported by the first support member 4A of the support mechanism 4. The driven rollers 25 and 26 are supported by the third support member 4C of the support mechanism 4. The driven roller 27 is supported by the fourth support member 4D of the support mechanism 4.

[0047] The third drive roller 17 is disposed forward and below the driven roller 27. The third drive roller 17 is rotatably supported by the fifth support member 4E of the support mechanism 4. The third drive roller 17 rotates forward so that the adhesive tape T is conveyed to the crimping device 7. The third drive roller 17 is connected to a third drive motor (not shown). The third drive roller 17 rotates forward or reversely by the rotational force generated by the third drive motor. A pinch roller 17A is disposed at a position facing the third drive roller 17. The third drive roller 17 rotates while sandwiching the adhesive tape T between it and the pinch roller 17A.

[0048] Each of the guide rod 19C and the driven roller 28 supports the adhesive tape T. In the conveyance path of the base tape Tb, each of the guide rod 19C and the driven roller 28 is disposed between the third drive roller 17 and the crimping device 7. The guide rod 19C is disposed forward and below the third drive roller 17. The driven roller 28 is disposed forward and above the guide rod 19C. The guide rod 19C and the driven roller 28 are supported by the fifth support member 4E of the support mechanism 4.

[0049] <Adhesive Coating Device> FIG. 9 is a view of the adhesive applicator 6 according to the present embodiment as seen from the left side. FIG. 10 is a view of the adhesive applicator 6 according to the present embodiment as seen from the front left side. FIG. 9 corresponds to an enlarged view of a part of FIG. 7. FIG. 10 corresponds to an enlarged view of a part of FIG. 8.

[0050] The adhesive applicator 6 includes a tank 30, a pump case 31, a valve case 32, an application nozzle 33, a support plate 34, an adhesive cooling nozzle 35, a pressure feeder 36 (see FIG. 7), a pump 37 (see FIG. 4), and a valve 38 (see FIG. 4).

[0051] The tank 30 stores the adhesive Tg. The pump case 31 houses the pump 37. The valve case 32 houses the valve 38. Each of the tank 30, the pump case 31, and the valve case 32 has a heater (not shown) for heating the adhesive Tg. The heater suppresses an increase in the viscosity of the adhesive Tg. The pump 37 is driven so that the adhesive Tg stored in the tank 30 is supplied to the application nozzle 33. The valve 38 is disposed in the flow path of the adhesive Tg between the pump 37 and the application nozzle 33. The valve 38 opens or closes the flow path of the adhesive Tg between the pump 37 and the application nozzle 33.

[0052] FIG. 11 is a view of the pump 37 according to the present embodiment as seen from the front left side. In the present embodiment, the pump 37 is a gear pump. The pump 37 is housed in the pump case 31. The pump 37 has a first gear 37A and a second gear 37B that meshes with the first gear 37A. The adhesive Tg stored in the tank 30 is supplied between the first gear 37A and the second gear 37B via a supply pipe 39. As shown in FIG. 7, the pressure feeder 36 is connected to the upper end of the tank 30. The pressure feeder 36 pressurizes the internal space of the tank 30 and pushes out the adhesive Tg stored in the tank 30 toward the pump 37. As the first gear 37A and the second gear 37B rotate synchronously, the adhesive Tg is supplied from the pump 37 to the application nozzle 33.

[0053] Valve 38 is a solenoid valve. Valve 38 is housed in valve case 32. Valve 38 is disposed in the flow path of adhesive Tg between pump 37 and coating nozzle 33. When valve 38 is opened, adhesive Tg is supplied from pump 37 to coating nozzle 33. When valve 38 is closed, the supply of adhesive Tg from pump 37 to coating nozzle 33 stops.

[0054] Coating nozzle 33 applies adhesive Tg to base tape Tb. Coating nozzle 33 has a discharge port 33A for discharging adhesive Tg. Coating nozzle 33 applies the adhesive to the coating surface of base tape Tb in a state where base tape Tb is being conveyed in the positive direction by tape conveyance device 5. By applying adhesive Tg to the coating surface of base tape Tb, adhesive tape T is produced.

[0055] Coating nozzle 33 is disposed between driven roller 20 and second drive roller 16 in the conveyance path of base tape Tb. Second drive roller 16 is disposed downstream of driven roller 20 and coating nozzle 33 in the conveyance path of base tape Tb. Driven roller 20 supports base tape Tb. Second drive roller 16 rotates forward so that base tape Tb is conveyed in the positive direction.

[0056] Base tape Tb is supported by each of driven roller 20 and second drive roller 16 such that the coating surface faces upward between driven roller 20 and second drive roller 16. In the present embodiment, base tape Tb is supported by each of driven roller 20 and second drive roller 16 such that the coating surface is parallel to the horizontal plane between driven roller 20 and second drive roller 16.

[0057] Coating nozzle 33 is disposed above base tape Tb between driven roller 20 and second drive roller 16. Coating nozzle 33 applies adhesive Tg to the coating surface of base tape Tb from above base tape Tb. By discharging adhesive Tg from discharge port 33A, adhesive Tg is applied to the coating surface of base tape Tb.

[0058] The support plate 34 supports the base material tape Tb from below between the driven roller 20 and the second driving roller 16. The base material tape Tb is conveyed from the driven roller 20 toward the second driving roller 16 while contacting the upper surface of the support plate 34. The coating nozzle 33 applies the adhesive Tg to the base material tape Tb in a state where the base material tape Tb is supported by the support plate 34.

[0059] The adhesive cooling nozzle 35 functions as a second cooling device that cools the adhesive Tg applied to the base material tape Tb. The adhesive cooling nozzle 35 is disposed between the coating nozzle 33 and the heating nozzle 40 in the conveyance path of the base material tape Tb. The adhesive cooling nozzle 35 is disposed on the downstream side of the coating nozzle 33 in the conveyance path of the base material tape Tb.

[0060] The adhesive cooling nozzle 35 injects cold air for cooling the adhesive Tg applied to the base material tape Tb. The adhesive cooling nozzle 35 has an injection port 35A for injecting cold air into the adhesive Tg. The cold air supplied from the air jet cooler 10 is injected from the injection port 35A. The adhesive cooling nozzle 35 cools the adhesive Tg immediately after the adhesive Tg is applied to the base material tape Tb.

[0061] The injection port 35A is disposed at a position facing the adhesive tape T supported by the second driving roller 16. The adhesive cooling nozzle 35 injects cold air onto the adhesive tape T supported by the second driving roller 16. The adhesive cooling nozzle 35 injects cold air into the adhesive Tg in a state where the base material tape Tb is supported by the second driving roller 16.

[0062] The adhesive Tg is primarily cured by being cooled. By the primary curing of the adhesive Tg, in the conveyance path of the adhesive tape T between the adhesive cooling nozzle 35 and the crimping device 7, it is suppressed that the adhesive Tg drips from the base material tape Tb or adheres to the components of the bonding device 1. The components of the bonding device 1 include the driving roller and the driven roller of the tape conveyance device 5 disposed in the conveyance path of the adhesive tape T between the adhesive cooling nozzle 35 and the crimping device 7.

[0063] As described above, the surface of the second drive roller 16 is made of rubber, and the frictional force between the surface of the second drive roller 16 and the base tape Tb is large. A pinch roller is not disposed at a position facing the second drive roller 16, and an adhesive cooling nozzle 35 is disposed there.

[0064] <Pressing device> FIG. 12 is a view of the pressing device 7 according to the present embodiment as viewed from the left. FIG. 13 is a view of the pressing device 7 according to the present embodiment as viewed from the left rear. FIG. 14 is a view of the pressing device 7 according to the present embodiment as viewed from the left front.

[0065] The pressing device 7 includes a heating nozzle 40, a first pressing roller 41, a second pressing roller 42, a belt 50, a first support member 43, a second support member 44, a lifting actuator 45 (see FIG. 4), and a cooling device 51.

[0066] The heating nozzle 40 heats the adhesive tape T before the adhesive tape T enters between the first pressing roller 41 and the second pressing roller 42. The heating nozzle 40 heats the adhesive tape T in a non-contact state with the adhesive tape T. The heating nozzle 40 heats the adhesive tape T in a state of facing the adhesive tape T with a gap therebetween. The heating nozzle 40 has an injection port 40A for injecting hot air. The injection port 40A is disposed so as to face the boundary between the first pressing roller 41 and the second pressing roller 42. The adhesive tape T is heated by the hot air injected from the injection port 40A.

[0067] The heating nozzle 40 is supported by the seventh support member 4G of the support mechanism 4. The seventh support member 4G is rod-shaped. The heating nozzle 40 is disposed behind the first pressing roller 41 and the second pressing roller 42. The heating nozzle 40 supplies hot air to the adhesive tape T from behind the first pressing roller 41 and the second pressing roller 42.

[0068] The first pressing roller 41 and the second pressing roller 42 are arranged in the vertical direction. The first pressing roller 41 is disposed above the second pressing roller 42.

[0069] The first pressing roller 41 and the second pressing roller 42 press the adhesive tape T heated by the heating nozzle 40 and the sheet M to join the adhesive tape T and the sheet M. The first pressing roller 41 and the second pressing roller 42 press the adhesive tape T and the sheet M while the adhesive tape T is being conveyed forward by the tape conveying device 5. The first pressing roller 41 and the second pressing roller 42 are a pair of pressing rollers that cooperate to join the adhesive tape T and the sheet M. The first pressing roller 41 and the second pressing roller 42 rotate synchronously.

[0070] Each of the first driving roller 15, the second driving roller 16, and the third driving roller 17 rotates forward so that the adhesive tape T is conveyed between the belt 50 and the second pressing roller 42. Each of the adhesive tape T and the sheet M enters between the first pressing roller 41 and the second pressing roller 42 from behind the first pressing roller 41 and the second pressing roller 42. The adhesive tape T enters between the first pressing roller 41 and the second pressing roller 42 from above and behind the first pressing roller 41. The sheet M enters between the first pressing roller 41 and the second pressing roller 42 from below and behind the second pressing roller 42. Each of the adhesive tape T and the sheet M that has passed between the first pressing roller 41 and the second pressing roller 42 retreats forward from between the first pressing roller 41 and the second pressing roller 42.

[0071] The surface of the first pressing roller 41 facing the adhesive tape T is formed of a material to which the adhesive Tg hardly adheres. Similar to the surface of the first pressing roller 41, the surface of the second pressing roller 42 is also formed of a material to which the adhesive Tg hardly adheres. That is, each of the surfaces of the first pressing roller 41 and the second pressing roller 42 is non-sticky to the adhesive Tg. Examples of the material to which the adhesive Tg hardly adheres include silicon or tetrafluoroethylene resin (PTFE: polytetrafluoroethylene).

[0072] The first crimping roller 41 is rotatably supported by the first support member 43. The first crimping roller 41 is connected to a first motor (not shown). The first crimping roller 41 rotates by the rotational force generated by the first motor. The first crimping roller 41 rotates about a first rotation axis extending in the left - right direction.

[0073] The second crimping roller 42 is rotatably supported by the second support member 44. The second crimping roller 42 is connected to a second motor (not shown). The second crimping roller 42 rotates by the rotational force generated by the second motor. The second crimping roller 42 rotates about a second rotation axis extending in the left - right direction.

[0074] The belt 50 is supplied between the first crimping roller 41 and the second crimping roller 42 together with the adhesive tape T and the sheet M. The belt 50 enters between the first crimping roller 41 and the second crimping roller 42 from behind the first crimping roller 41 and the second crimping roller 42. The belt 50 that has passed between the first crimping roller 41 and the second crimping roller 42 retreats forward from between the first crimping roller 41 and the second crimping roller 42.

[0075] The belt 50 is annular. The belt 50 is an endless belt. A part of the belt 50 is wound around the first crimping roller 41. A part of the belt 50 is wound around a driven roller 47 provided in front of the first crimping roller 41. The driven roller 47 is rotatably supported by the sixth support member 4F of the support mechanism 4.

[0076] A pulley 46 is disposed between the first crimping roller 41 and the driven roller 47. Pulleys 48 and 49 are disposed between the driven roller 47 and the first crimping roller 41. Each of the pulley 46, the pulley 48, and the pulley 49 supports the belt 50. Each of the pulley 46, the pulley 48, and the pulley 49 is supported by the sixth support member 4F of the support mechanism 4.

[0077] When the first pressure roller 41 rotates, the belt 50 is moved. The belt 50 that has moved forward from below the first pressure roller 41 enters below the driven roller 47 via the pulley 46. The belt 50 that has moved backward from above the driven roller 47 enters above the first pressure roller 41 via the pulleys 48 and 49.

[0078] The adhesive tape T and the sheet M are arranged between the belt 50 wound around the first pressure roller 41 and the second pressure roller 42. Between the first pressure roller 41 and the second pressure roller 42, the belt 50 is arranged above the adhesive tape T. Between the first pressure roller 41 and the second pressure roller 42, the sheet M is arranged below the adhesive tape T. The belt 50 faces the base tape Tb of the adhesive tape T. The sheet M contacts the adhesive Tg of the adhesive tape T. The second pressure roller 42 presses the adhesive tape T and the sheet M against the belt 50 wound around the first pressure roller 41.

[0079] The surface of the belt 50 facing the adhesive tape T is formed of a material to which the adhesive Tg hardly adheres. That is, the surface of the belt 50 is non-sticky to the adhesive Tg. Examples of the material to which the adhesive Tg hardly adheres include silicon or tetrafluoroethylene resin (PTFE: polytetrafluoroethylene).

[0080] The first support member 43 is supported by the support mechanism 4 so as to be movable in the vertical direction. The first support member 43 is movable in the vertical direction by the power generated by the lifting actuator 45. An air cylinder is exemplified as the lifting actuator 45. By driving the lifting actuator 45, the first pressure roller 41 supported by the first support member 43 is movable in the vertical direction. The second pressure roller 42 does not move in the vertical direction.

[0081] With the belt 50, the adhesive tape T, and the sheet M arranged between the first crimping roller 41 and the second crimping roller 42, as the first crimping roller 41 descends so as to approach the second crimping roller 42, the belt 50, the adhesive tape T heated by the heating nozzle 40, and the sheet M are pressed by the first crimping roller 41 and the second crimping roller 42. When the belt 50, the adhesive tape T heated by the heating nozzle 40, and the sheet M are pressed by the first crimping roller 41 and the second crimping roller 42, the adhesive tape T and the sheet M are joined together.

[0082] FIG. 15 is a view of the cooling device 51 according to the present embodiment as seen from the left front. FIG. 16 is a view of the cooling device 51 according to the present embodiment as seen from the lower rear. FIG. 17 is a view of the cooling device 51 according to the present embodiment as seen from the lower rear.

[0083] The cooling device 51 functions as a first cooling device that cools the adhesive tape T that has retreated from between the first crimping roller 41 and the second crimping roller 42. The cooling device 51 is disposed in front of the first crimping roller 41 and the second crimping roller 42. The cooling device 51 is disposed so as to face the boundary between the first crimping roller 41 and the second crimping roller 42. The cooling device 51 cools the adhesive tape T that has retreated forward from between the first crimping roller 41 and the second crimping roller 42. The cooling device 51 cools the adhesive tape T immediately after the adhesive tape T heated by the heating nozzle 40 is joined to the sheet M.

[0084] The cooling device 51 cools the adhesive tape T joined to the sheet M by the first crimping roller 41 and the second crimping roller 42. The cooling device 51 cools the adhesive tape T in a state where the adhesive tape T that has retreated from between the first crimping roller 41 and the second crimping roller 42 is sandwiched between the belt 50 and the sheet M. When the adhesive tape T that has retreated from between the first crimping roller 41 and the second crimping roller 42 is cooled, the adhesive agent Tg that has retreated from between the first crimping roller 41 and the second crimping roller 42 is cooled.

[0085] The cooling device 51 cools the belt 50 that has retreated forward from between the first crimping roller 41 and the second crimping roller 42, thereby cooling the adhesive tape T. The cooling device 51 is disposed above the belt 50 between the first crimping roller 41 and the pulley 46. The cooling device 51 cools the adhesive Tg via the belt 50.

[0086] The cooling device 51 includes a case 52 and a heat sink 53 housed in the case 52. The heat sink 53 includes a base plate 53A and a plurality of fins 53B protruding upward from the upper surface of the base plate 53A. The base plate 53A is disposed so as to contact the belt 50. The lower surface of the base plate 53A contacts the upper surface of the belt 50 that moves forward from below the first crimping roller 41. The belt 50 moves while being in contact with the lower surface of the base plate 53A.

[0087] An opening 52A is provided in the upper surface of the case 52. The cold air supplied from the air jet cooler 10 flows into the internal space of the case 52 through the opening 52A. The cold air that has flowed into the internal space of the case 52 through the opening 52A is supplied to the fins 53B. The cold air flows between the mutually adjacent fins 53B. As the cold air flows between the mutually adjacent fins 53B, the base plate 53A is cooled. As the base plate 53A is cooled, the belt 50 that contacts the lower surface of the base plate 53A is cooled. As the belt 50 is cooled, the adhesive tape T sandwiched between the belt 50 and the sheet M is cooled via the belt 50.

[0088] The cold air that has flowed between the mutually adjacent fins 53B flows out from an outlet 54 provided between the rear end portion of the base plate 53A and the rear end portion of the case 52. The cold air that has flowed out from the outlet 54 is blown onto the belt 50. The belt 50 is also cooled by the cold air that has flowed out from the outlet 54. As the belt 50 is cooled, the adhesive tape T is cooled.

[0089] <Operation> Next, an example of the operation of the bonding apparatus 1 according to the present embodiment will be described with reference to FIGS. 18, 19, 20, and 21. FIG. 18 is a flowchart showing the operation of the bonding apparatus 1 according to the present embodiment. FIG. 19 is a diagram for explaining the operation of the adhesive application device 6 according to the present embodiment. Each of FIGS. 20 and 21 is a diagram for explaining the operation of the crimping device 7 according to the present embodiment. FIG. 19 is a view of the adhesive application device 6 as seen from the left. FIG. 20 is a view of the crimping device 7 as seen from the left. FIG. 21 is a view of the crimping device 7 as seen from the rear.

[0090] The operator of the bonding apparatus 1 operates the operation pedal 9 with the foot to start the bonding apparatus 1. When the operation pedal 9 is operated, an operation signal for driving the bonding apparatus 1 is transmitted from the operation pedal 9 to the controller 11. The controller 11 acquires the operation signal from the operation pedal 9 (step S1).

[0091] The controller 11 drives the tape conveyance device 5 so that the adhesive tape T is conveyed in the forward direction (step S2).

[0092] Driving the tape conveyance device 5 includes driving each of the first driving roller 15, the second driving roller 16, and the third driving roller 17. The controller 11 rotates each of the first driving roller 15, the second driving roller 16, and the third driving roller 17 in the forward direction so that the adhesive tape T is conveyed in the forward direction. The controller 11 starts driving the first driving roller 15, driving the second driving roller 16, and driving the third driving roller 17 simultaneously.

[0093] The controller 11 drives each of the adhesive application device 6 and the crimping device 7 (step S3).

[0094] Driving the adhesive application device 6 includes opening the valve 38 and driving the pump 37. When the pump 37 is driven with the valve 38 open, the adhesive Tg is discharged from the discharge port 33A of the application nozzle 33.

[0095] Driving the crimping device 7 includes approaching the first crimping roller 41 to the second crimping roller 42, rotating each of the first crimping roller 41 and the second crimping roller 42, and injecting hot air from the injection port 40A of the heating nozzle 40 so that the belt 50, the adhesive tape T, and the sheet M are pressed between the first crimping roller 41 and the second crimping roller 42 in a state where the belt 50, the adhesive tape T, and the sheet M are disposed therebetween.

[0096] When each of the first drive roller 15, the second drive roller 16, and the third drive roller 17 rotates forward, each of the first crimping roller 41 and the second crimping roller 42 rotates forward so that the belt 50, the adhesive tape T, and the sheet M between the first crimping roller 41 and the second crimping roller 42 move forward.

[0097] When the first crimping roller 41 rotates forward, the belt 50 rotates. When the first crimping roller 41 rotates forward, the belt 50 that has moved forward from the lower part of the first crimping roller 41 enters the lower part of the driven roller 47 via the pulley 46. The belt 50 that has moved backward from the upper part of the driven roller 47 enters the upper part of the first crimping roller 41 via the pulleys 48 and 49.

[0098] When each of the tape conveyance device 5, the adhesive application device 6, and the crimping device 7 is driven, the adhesive tape T generated by applying the adhesive Tg to the base tape Tb in the adhesive application device 6 is conveyed between the belt 50 and the second crimping roller 42, and the adhesive tape T and the sheet M are joined in the crimping device 7.

[0099] Note that the process of step S2 and the process of step S3 may be performed simultaneously.

[0100] As shown in FIG. 19, the base tape Tb conveyed in the positive direction moves from the driven roller 20 toward the second driving roller 16. The lower surface of the base tape Tb is supported by the support plate 34. The coating nozzle 33 applies the adhesive Tg onto the upper surface of the base tape Tb while the base tape Tb is supported by the support plate 34. The base tape Tb that has passed below the coating nozzle 33 is disposed at a position facing the injection port 35A of the adhesive cooling nozzle 35 while being supported by the second driving roller 16. Cold air is injected from the injection port 35A onto the adhesive Tg applied to the base tape Tb. By injecting cold air onto the adhesive Tg, the adhesive Tg is cooled and undergoes primary curing.

[0101] As shown in FIGS. 20 and 21, the adhesive tape T having the adhesives Tg that have undergone primary curing is supplied between the first crimping roller 41 and the second crimping roller 42. The adhesive tape T enters between the first crimping roller 41 and the second crimping roller 42 from above and behind the first crimping roller 41. The sheet M enters between the first crimping roller 41 and the second crimping roller 42 from below and behind the second crimping roller 42. The belt 50 enters between the first crimping roller 41 and the second crimping roller 42 from behind the adhesive tape T and the sheet M together with the adhesive tape T and the sheet M.

[0102] The heating nozzle 40 injects hot air onto the adhesive Tg before the adhesive tape T enters between the first pressure roller 41 and the second pressure roller 42. The adhesive Tg of the adhesive tape T faces the injection port 40A. The injection port 40A injects hot air onto the adhesive Tg of the adhesive tape T. The adhesive Tg is heated by the hot air injected from the injection port 40A. The adhesive Tg is melted by being heated by the hot air. With the adhesive Tg in a melted state, the adhesive tape T enters between the first pressure roller 41 and the second pressure roller 42. Between the first pressure roller 41 and the second pressure roller 42, the adhesive Tg is disposed on the lower surface of the base tape Tb. Between the first pressure roller 41 and the second pressure roller 42, the sheet M is disposed below the adhesive tape T. Between the first pressure roller 41 and the second pressure roller 42, the melted adhesive Tg and the sheet M come into contact. The adhesive tape T and the sheet M are joined by the first pressure roller 41 and the second pressure roller 42.

[0103] As shown in FIG. 21, in the left - right direction, the dimension (width) of the adhesive tape T is smaller than the dimension (width) of the belt 50. In the left - right direction, the adhesive tape T does not protrude from the belt 50.

[0104] The adhesive tape T that has passed between the first pressure roller 41 and the second pressure roller 42 is cooled by the cooling device 51 in a state of being joined to the sheet M. The cooling device 51 cools the adhesive tape T via the belt 50. The adhesive tape T is cooled by the cooling device 51 in a state of being sandwiched between the belt 50 and the sheet M. By the adhesive tape T being cooled by the cooling device 51, the adhesive Tg undergoes primary curing. As shown in FIG. 20, due to the primary curing of the adhesive Tg, the adhesive tape T and the sheet M move forward away from the belt 50 in a state of being joined to each other.

[0105] As described above, the width of the adhesive tape T is smaller than the width of the belt 50. When the adhesive tape T is pressed between the first pressure roller 41 and the second pressure roller 42, at least a part of the adhesive Tg may protrude from the base tape Tb in the left - right direction. As described above, the belt 50 is non - sticky to the adhesive Tg. Therefore, the adhesion of the adhesive Tg protruding from the base tape Tb to the belt 50 is suppressed. Further, the adhesive Tg protruding from the base tape Tb is cooled by the cooling device 51 and is first - cured in a state of adhering to the sheet M. When the adhesive Tg is first - cured, the adhesive Tg protruding from the base tape Tb leaves the belt 50 together with the sheet M without adhering to the belt 50.

[0106] As described with reference to FIG. 6, when the adhesive Tg is second - cured in a state of protruding from the base tape Tb, for example, even if the edge of the base tape Tb is scratched by the nail or the like of the user of the clothing, the adhesive tape T is suppressed from peeling off from the sheet M.

[0107] The operator of the bonding device 1 can end the bonding operation of the adhesive tape T and the sheet M by the bonding device 1 by releasing the operation of the operation pedal 9. The controller 11 determines whether to end the bonding operation of the adhesive tape T and the sheet M. That is, the controller 11 determines whether the operation of the operation pedal 9 by the operator has been released. When the operation of the operation pedal 9 is released, no operation signal is transmitted from the operation pedal 9 to the controller 11, so the controller 11 can determine whether the operation of the operation pedal 9 by the operator has been released (step S4).

[0108] In step S4, when it is determined that the bonding operation of the adhesive tape T and the sheet M is not ended (step S4: No), the process returns to step S2, and the bonding operation of the adhesive tape T and the sheet M is continued.

[0109] In step S4, when it is determined that the bonding operation between the adhesive tape T and the sheet M has ended (step S4: Yes), the controller 11 stops the driving of each of the adhesive applicator 6 and the crimping device 7 (step S5).

[0110] Stopping the driving of the adhesive applicator 6 includes closing the valve 38 and stopping the driving of the pump 37. When the driving of the pump 37 is stopped with the valve 38 closed, the discharge of the adhesive Tg from the discharge port 33A of the application nozzle 33 stops.

[0111] Stopping the driving of the crimping device 7 includes raising the first crimping roller 41 so that the first crimping roller 41 and the second crimping roller 42 are separated, stopping the rotation of each of the first crimping roller 41 and the second crimping roller 42, and stopping the injection of hot air from the injection port 40A of the heating nozzle 40.

[0112] After stopping the driving of each of the adhesive applicator 6 and the crimping device 7, the controller 11 stops the driving of the tape conveyance device 5. Note that the controller 11 may simultaneously stop the driving of the adhesive applicator 6, the driving of the crimping device 7, and the driving of the tape conveyance device 5.

[0113] Stopping the driving of the tape conveyance device 5 includes stopping the rotation of each of the first driving roller 15, the second driving roller 16, and the third driving roller 17.

[0114] After the controller 11 stops the driving of each of the tape conveyance device 5, the adhesive applicator 6, and the crimping device 7, the controller 11 drives the tape conveyance device 5 so that the adhesive tape T moves a predetermined distance in the reverse direction. After the controller 11 drives the tape conveyance device 5 so that the adhesive tape T moves a predetermined distance in the reverse direction, the controller 11 stops the driving of the tape conveyance device 5 (step S6).

[0115] Moving the adhesive tape T in the reverse direction includes at least reversely rotating the first driving roller 15. The first driving roller 15 is disposed upstream of the coating nozzle 33 in the conveyance path of the base tape Tb. Moving the adhesive tape T in the reverse direction may include reversely rotating each of the first driving roller 15, the second driving roller 16, and the third driving roller 17. In the present embodiment, moving the adhesive tape T in the reverse direction includes reversely rotating the first driving roller 15 with the second driving roller 16 and the third driving roller 17 stopped.

[0116] FIG. 22 is a diagram for explaining the operation of the tape conveyance device 5 according to the present embodiment. When applying the adhesive Tg to the base tape Tb, the base tape Tb is conveyed in the forward direction. When it is determined that the bonding operation between the adhesive tape T and the sheet M has been completed, the controller 11 stops the tape conveyance device 5.

[0117] As shown in FIG. 22, when the driving of each of the tape conveyance device 5, the adhesive application device 6, and the crimping device 7 stops, there is a possibility that the adhesive Tg accumulates in a part of the layer of the adhesive Tg. That is, there is a possibility that a liquid pool Td of the adhesive Tg is formed in a part of the layer of the adhesive Tg. It is considered that the liquid pool Td is formed by the adhesive Tg remaining in the internal flow path of the coating nozzle 33 flowing out from the discharge port 33A to the adhesive tape T after the driving of the adhesive application device 6 stops.

[0118] In this embodiment, after the controller 11 stops the driving of each of the tape conveyance device 5, the adhesive application device 6, and the crimping device 7, the controller 11 drives the tape conveyance device 5 so that the adhesive tape T moves a predetermined distance in the reverse direction. The predetermined distance when moving the adhesive tape T in the reverse direction is the distance at which the liquid pool Td of the adhesive Tg formed due to the adhesive Tg remaining in the internal flow path of the application nozzle 33 is crushed by the application nozzle 33 after the driving of the adhesive application device 6 stops. That is, the predetermined distance is the distance at which the application nozzle 33 can contact the liquid pool Td when the adhesive tape T is moved in the reverse direction. The predetermined distance can be obtained in advance by, for example, preliminary experiments or simulations.

[0119] As shown in FIG. 22, after the liquid pool Td is formed in the layer of the adhesive Tg, the adhesive tape T moves in the reverse direction so that the liquid pool Td is crushed by the application nozzle 33. When the liquid pool Td is crushed by the application nozzle 33, the liquid pool Td disappears.

[0120] After the controller 11 moves the adhesive tape T a predetermined distance in the reverse direction, the controller 11 stops the driving of the tape conveyance device 5. That is, the controller 11 reversely rotates the first drive roller 15 so that the adhesive tape T moves a predetermined distance in the reverse direction, and then stops the first drive roller 15.

[0121] When the adhesive tape T moves in the reverse direction, the tension adjustment roller 18 swings upward. When the driving of the tape conveyance device 5 stops after the adhesive tape T moves in the reverse direction, the tension adjustment roller 18 swings downward. After the driving of the tape conveyance device 5 stops, due to the downward swing of the tension adjustment roller 18, the base tape Tb moves slightly in the forward direction.

[0122] As shown in FIG. 22, after the liquid pool Td is crushed by the coating nozzle 33, there may remain a convex portion Te of the small adhesive Tg. By the swinging of the tension adjustment roller 18, the base material tape Tb moves in the positive direction, and the coating nozzle 33 contacts the convex portion Te. When the coating nozzle 33 contacts the convex portion Te, the convex portion Te disappears.

[0123] When restarting the bonding operation between the adhesive tape T and the sheet M, since there is no liquid pool Td in the layer of the adhesive Tg, the occurrence of coating unevenness of the adhesive Tg is suppressed.

[0124] <Effect> As described above, in the present embodiment, the bonding apparatus 1 includes a tape conveyance apparatus 5 that conveys the base material tape Tb in the positive direction, a coating nozzle 33 having a discharge port 33A that discharges the adhesive Tg, and in a state where the base material tape Tb is being conveyed in the positive direction, an adhesive coating apparatus 6 that applies an adhesive to the coating surface of the base material tape Tb to generate the adhesive tape T, a first crimping roller 41 and a second crimping roller 42 that press the adhesive tape T and the sheet M in a state where the adhesive tape T is being conveyed in the positive direction, and a heating nozzle 40 that is a heating apparatus that heats the adhesive tape T before the adhesive tape T enters between the first crimping roller 41 and the second crimping roller 42, and a crimping apparatus 7 that bonds the adhesive tape T and the sheet M, and a controller 11. The controller 11 stops the driving of each of the tape conveyance apparatus 5, the adhesive coating apparatus 6, and the crimping apparatus 7, drives the tape conveyance apparatus 5 so that the base material tape Tb moves in the reverse direction by a predetermined distance, and then stops the driving of the tape conveyance apparatus 5.

[0125] According to this embodiment, after the driving of each of the tape conveyance device 5, the adhesive application device 6, and the crimping device 7 is stopped, the tape conveyance device 5 is driven so that the base tape Tb moves in the reverse direction by a predetermined distance. Therefore, as described with reference to FIG. 22, even if a liquid pool Td is formed in the layer of the adhesive Tg, the adhesive tape T moves in the reverse direction so that the liquid pool Td is crushed by the coating nozzle 33. Since the liquid pool Td is crushed by the coating nozzle 33, the liquid pool Td disappears, so that the occurrence of uneven application of the adhesive Tg is suppressed. In the bonding operation of the adhesive tape T and the sheet M using the bonding device 1, after the bonding of the adhesive tape T and the first sheet M is completed, the driving of each of the tape conveyance device 5, the adhesive application device 6, and the crimping device 7 is stopped, and then, the bonding of the adhesive tape T and the second sheet M is started. That is, the bonding operation of the adhesive tape T and each of the plurality of sheets M is sequentially performed. According to this embodiment, after the bonding of the adhesive tape T and the first sheet M is completed, the bonding of the adhesive tape T and the second sheet M is started in a state where there is no uneven application of the adhesive Tg. Therefore, the deterioration of the quality of the sewn product manufactured by the bonding device 1 is suppressed.

[0126] The adhesive application device 6 has a pump 37 that is driven so that the adhesive Tg is supplied to the coating nozzle 33. Stopping the driving of the adhesive application device 6 includes stopping the driving of the pump 37. The predetermined distance is the distance at which the liquid pool Td of the adhesive Tg formed due to the adhesive Tg remaining in the internal flow path of the coating nozzle 33 is crushed by the coating nozzle 33 after the driving of the adhesive application device 6 is stopped. Since the predetermined distance is preset to an optimum value so that the liquid pool Td disappears, the base tape Tb is suppressed from being excessively moved in the reverse direction.

[0127] The tape conveyance device 5 has a tension adjustment roller 18 that adjusts the tension applied to the adhesive tape T. The tension adjustment roller 18 is swingably supported by the first support member 4A. When the tape conveyance device 5 is driven so that the base tape Tb moves in the reverse direction, after the drive of the tape conveyance device 5 stops, the base tape Tb moves in the forward direction by the swinging of the tension adjustment roller 18. As described with reference to FIG. 22, even if small convex portions Te of the adhesive Tg remain after the liquid pool Td is crushed by the coating nozzle 33, the base tape Tb moves in the forward direction by the swinging of the tension adjustment roller 18. When the base tape Tb moves in the forward direction, the coating nozzle 33 contacts the convex portion Te. When the coating nozzle 33 contacts the convex portion Te, the convex portion Te disappears, so that the occurrence of uneven application of the adhesive Tg is suppressed.

[0128] The tape conveyance device 5 includes a driven roller 20 that supports the base tape Tb, and a second drive roller 16 that is disposed downstream of the driven roller 20 in the conveyance path of the base tape Tb and rotates forward so that the base tape Tb is conveyed in the forward direction. The base tape Tb is supported by each of the driven roller 20 and the second drive roller 16 such that the coating surface of the base tape Tb faces upward between the driven roller 20 and the second drive roller 16. The coating nozzle 33 applies the adhesive Tg to the coating surface from above the coating surface of the base tape Tb. Since the coating nozzle 33 applies the adhesive Tg to the coating surface from above the coating surface of the base tape Tb, a layer of the adhesive Tg is formed to have a constant thickness.

[0129] The tape conveyance device 5 has a first drive roller 15 which is disposed upstream of the coating nozzle 33 in the conveyance path of the base tape Tb and which rotates forward so that the base tape Tb is conveyed in the forward direction. Moving the base tape Tb in the reverse direction includes reversely rotating the first drive roller 15 with the second drive roller 16, which is a downstream drive roller, stopped. Since the first drive roller 15 rotates reversely with the second drive roller 16 stopped, slackening of the base tape Tb is suppressed. As described above, the surface of the second drive roller 16 that contacts the base tape Tb is made of rubber. The frictional force of the surface of the second drive roller 16 with respect to the base tape Tb is large. Therefore, with the second drive roller 16 stopped, when the first drive roller 15 rotates reversely so that the base tape Tb moves in the reverse direction by a predetermined distance, the base tape Tb is appropriately pulled. Therefore, when the liquid pool Td is formed, the coating nozzle 33 can break up the liquid pool Td.

[0130] [Second Embodiment] The second embodiment will be described. In the following description, components that are the same as or equivalent to those of the above-described embodiment are given the same reference numerals, and the description of those components is simplified or omitted.

[0131] FIG. 23 is a view of the cooling device 510 according to the present embodiment as seen from the left. In the above-described embodiment, the cooling device 51 was described as including the heat sink 53 that contacts the belt 50. In the present embodiment, the cooling device 510 includes a belt cooling nozzle that supplies cold air to the belt 50. The cooling device 510 functions as a first cooling device that cools the adhesive tape T that has retreated from between the first pressure roller 41 and the second pressure roller 42. The cooling device 510 has an injection port 510A that injects cold air onto the belt 50. The cold air supplied from the air jet cooler 10 is injected from the injection port 510A. The cooling device 510 is disposed in front of the first pressure roller 41 and the second pressure roller 42. The cooling device 51 cools the adhesive tape T in a state where the adhesive tape T that has retreated forward from between the first pressure roller 41 and the second pressure roller 42 is sandwiched between the belt 50 and the sheet M. The cooling device 510 cools the adhesive tape T by injecting cold air onto the belt 50. When the adhesive tape T is cooled, the adhesive Tg is cooled and undergoes primary curing. When the adhesive Tg undergoes primary curing, the adhesive Tg that has protruded from the base tape Tb separates from the belt 50 together with the sheet M without adhering to the belt 50.

[0132] [Third Embodiment] The third embodiment will be described. In the following description, components that are the same as or equivalent to those of the above-described embodiment are denoted by the same reference numerals, and the description of those components is simplified or omitted.

[0133] FIG. 24 is a view of the support plate 340 according to the present embodiment as seen from the left front. The support plate 340 supports the base tape Tb on which the adhesive Tg is applied by the coating nozzle 33 from below. In the present embodiment, the support plate 340 functions as a second cooling device that cools the adhesive Tg applied to the base tape Tb by the adhesive applying device 6. The support plate 340 cools the adhesive Tg from below the base tape Tb between the driven roller 20 and the second driving roller 16.

[0134] As shown in FIG. 24, a heat sink 55 is disposed inside the support plate 340. The heat sink 55 has a base plate 55A and a plurality of fins 55B protruding downward from the lower surface of the base plate 55A. The cold air from the air jet cooler 10 is supplied to the fins 55B. The cold air from the air jet cooler 10 flows between the fins 55B adjacent to each other. As the cold air flows between the fins 55B adjacent to each other, the base plate 55A is cooled. As the base plate 55A is cooled, the upper surface of the support plate 340 is cooled. The upper surface of the support plate 340 facing the base tape Tb is cooled by the base plate 55A. The support plate 340 cools the adhesive Tg applied to the base tape Tb. By cooling the adhesive Tg by the support plate 340, it is possible to suppress the adhesive Tg from dripping from the base tape Tb or adhering to the components of the bonding device 1 in the conveyance path of the base tape Tb between the adhesive application device 6 and the crimping device 7.

[0135] [Fourth Embodiment] The fourth embodiment will be described. In the following description, the same or equivalent components as those in the above-described embodiments are denoted by the same reference numerals, and the description of those components is simplified or omitted.

[0136] FIG. 25 is a view of the driven roller 23 according to the present embodiment as viewed from the left front. In the present embodiment, the driven roller 23 disposed on the downstream side of the coating nozzle 33 in the conveyance path of the base tape Tb functions as a second cooling device that cools the adhesive Tg applied to the base tape Tb. The driven roller 23 supports the adhesive tape T generated by applying the adhesive Tg to the base tape Tb in the adhesive application device 6.

[0137] As shown in FIG. 25, the driven roller 23 is cooled by the cooling device 56. The cooling device 56 functions as a second cooling device that cools the adhesive Tg applied to the base tape Tb. The cooling device 56 is a roller cooling nozzle that injects cold air into the opening 23A provided in the driven roller 23. The cooling device 56 has an injection port 56A for injecting cold air into the opening 23A. Cold air is injected from the injection port 56A of the air jet cooler 10. The cooling device 56 injects the cold air from the air jet cooler into the opening 23A.

[0138] The opening 23A is formed in the driven roller 23 so as to extend in a direction parallel to the rotation axis of the driven roller 23. The opening 23A includes a through hole that penetrates the left end face and the right end face of the driven roller 23. When the cold air injected from the injection port 56A passes through the opening 23A, the surface of the driven roller 23 is cooled. When the surface of the driven roller 23 is cooled, the adhesive Tg applied to the base tape Tb is cooled. When the adhesive Tg is cooled by the cooling device 56 in the driven roller 23, it is possible to suppress the adhesive Tg from dripping from the base tape Tb or adhering to the components of the bonding device 1 in the conveyance path of the base tape Tb between the driven roller 23 and the crimping device 7.

[0139] [Other Embodiments] In the above-described embodiment, the heating device that heats the adhesive tape T before the adhesive tape T enters between the first crimping roller 41 and the second crimping roller 42 is the heating nozzle 40 that injects hot air. The heating device only needs to be able to heat the adhesive tape T in a non-contact state. The heating device may be a high-frequency generator that irradiates the adhesive tape T with high-frequency waves to heat the adhesive tape T, an ultrasonic generator that irradiates the adhesive tape T with ultrasonic waves to heat the adhesive tape T, a laser light emitting device that irradiates the adhesive tape T with laser light to heat the adhesive tape T, or a radiant heat device that heats the adhesive tape T with radiant heat.

[0140] In the above-described embodiment, the valve 38 may be omitted.

Description of Reference Numerals

[0141] 1... Bonding device, 2... Base, 3... Body, 3A... Stand part, 3B... Arm part, 4... Support mechanism, 4A... First support member, 4B... Second support member, 4C... Third support member, 4D... Fourth support member, 4E... Fifth support member, 4F... Sixth support member, 4G... Seventh support member, 5... Tape conveying device, 6... Adhesive coating device, 7... Crimping device, 8... Operation panel, 9... Operation pedal, 10... Air jet cooler, 11... Controller, 12... Workbench, 12A... Top plate, 12B... Leg member, 12C... Bottom plate, 13... Cover, 13A... First cover, 13B... Second cover, 13C... Third cover, 14... Reel, 15... First drive roller (upstream drive roller), 15A... Pinch roller, 16... Second drive roller (downstream drive roller), 17... Third drive roller, 17A... Pinch roller, 18... Tension adjustment roller, 19A... Guide rod, 19B... Guide rod, 19C... Guide rod, 20... Driven roller, 21... Driven roller, 22... Driven roller, 23... Driven roller, 23A... Opening, 24... Driven roller, 25... Driven roller, 26... Driven roller, 27... Driven roller, 28... Driven roller, 29... Guide, 30... Tank, 31... Pump case, 32... Valve case, 33... Coating nozzle, 33A... Discharge port, 34... Support plate, 35... Adhesive cooling nozzle (second cooling device), 35A... Injection port, 36... Pressure feeder, 37... Pump, 37A... First gear, 37B... Second gear, 38... Valve, 39... Supply pipe, 40... Heating nozzle (heating device), 40A... Injection port, 41... First crimping roller, 42... Second crimping roller, 43... First support member, 44... Second support member, 45... Lifting actuator, 46... Pulley, 47... Driven roller, 48... Pulley, 49... Pulley, 50... Belt, 51... Cooling device (first cooling device), 52... Case, 52A... Opening, 53... Heat sink (first heat sink), 53A... Base plate (first base plate), 53B... Fin (first fin), 54... Outlet, 55... Heat sink (second heat sink), 55A... Base plate (second base plate), 55B... Fin (second fin), 56... Cooling device (second cooling device), 56A... Injection port, 111... Processor, 112... Memory, 113... Storage, 340... Support plate (second cooling device), 510... Cooling device (first cooling device), 510A... Injection port, M... Sheet, St... Seam, T... Adhesive tape, Tb... Base material tape,Td... liquid pool, Te... convex part, Tg... adhesive.

Claims

1. A tape conveyance device for conveying a base tape, An adhesive application device having a coating nozzle with a discharge port for discharging an adhesive, and applying the adhesive to the application surface of the base tape in a state where the base tape is being conveyed in the forward direction to generate an adhesive tape, A crimping device for joining the adhesive tape and the sheet, having a first crimping roller and a second crimping roller for pressing the adhesive tape and the sheet in a state where the adhesive tape is being conveyed in the forward direction, and a heating device for heating the adhesive tape before the adhesive tape enters between the first crimping roller and the second crimping roller, A controller that outputs a control signal for controlling the tape conveyance device, the adhesive application device, and the crimping device, The controller stops the driving of each of the tape conveyance device, the adhesive application device, and the crimping device, drives the tape conveyance device so that the base tape moves a predetermined distance in the reverse direction, and then stops the driving of the tape conveyance device, Bonding device.

2. The adhesive application device has a pump that is driven so that the adhesive is supplied to the coating nozzle, Stopping the driving of the adhesive application device includes stopping the driving of the pump, The predetermined distance is a distance at which a liquid pool of the adhesive formed on the adhesive tape due to the adhesive remaining in the internal flow path of the coating nozzle is crushed by the coating nozzle after the driving of the adhesive application device is stopped. The bonding device according to Claim 1.

3. The tape conveyance device has a tension adjustment roller for adjusting the tension applied to the adhesive tape, The tension adjustment roller is swingably supported by a support member, After the tape conveyance device is driven so that the base tape moves in the reverse direction and the driving of the tape conveyance device is stopped, the base tape moves in the forward direction due to the swing of the tension adjustment roller. The bonding device according to Claim 2.

4. The tape conveyance device has a driven roller for supporting the base tape, and a downstream driving roller that is disposed downstream of the driven roller in the conveyance path of the base tape and rotates forward so that the base tape is conveyed in the forward direction. The base tape is supported by each of the driven roller and the drive roller such that the coating surface faces upward between the driven roller and the downstream drive roller. The coating nozzle applies the adhesive to the coating surface from above the coating surface. The bonding device according to claim 1.

5. The tape conveying device has an upstream drive roller that is disposed upstream of the coating nozzle in the conveyance path of the base tape and rotates forward so that the base tape is conveyed in the forward direction. Moving the base tape in the reverse direction includes reversely rotating the upstream drive roller with the downstream drive roller stopped. The bonding device according to claim 4.

6. The sheet is used for clothing. The bonding device according to claim 1.

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