JP2021008093A - Joint method of sheet-like material and joint system - Google Patents

Abstract

To achieve excellent joint of sheet-like materials.SOLUTION: A joint method of sheet-like materials comprises: a melt-cutting step for melt-cutting two non-thermoplastic sheet-like materials C that sandwich a thermoplastic adhesive interlining W by use of ultrasonic wave; a welding step for opening the two sheet-like materials, melt-cut ends of which have been joined by the adhesive interlining, and welding a reinforcing tape T on an opposite side of the adhesive interlining so as to straddle the two sheet-like materials at the melt-cut ends; and a removal step for removing the adhesive interlining from the two sheet-like materials to which the reinforcing tape has been welded. Because the adhesive interlining remains in the welding step, work can be carried out while maintaining a joint strength by the adhesive interlining.SELECTED DRAWING: Figure 2

Description

The present invention relates to a method and a joining system for joining a non-sewn sheet-like material.

Conventionally, as a joining method for joining sheet-like materials such as cloth, a method using an ultrasonic fusing device can be mentioned. This joining method utilizes the fact that when two sheet-shaped materials made of thermoplastic resin are overlapped and cut with an ultrasonic fusing device, the cut ends of the two sheet-shaped materials are heat-welded. There is.
However, in this joining method, the target of joining is limited to the thermoplastic resin. Therefore, in order to join two sheet-like materials that are not thermoplastic resins, the adhesive core is sandwiched between these sheet-like materials and fusing is performed by an ultrasonic fusing device, and the adhesive core is melted. A joining method has been proposed in which these are temporarily fixed by soaking into the sheet-like material, the unmelted part of the adhesive core is removed, and then the reinforcing tape straddling the two sheet-like materials is welded (. For example, see Patent Document 1).

Japanese Patent No. 5244052

However, in the above-mentioned conventional joining method, the adhesive interlining is sandwiched between two sheet-like materials and temporarily fixed by fusing, the unmelted portion of the adhesive interlining is removed, and then the reinforcing tape is welded. Therefore, there is a possibility that the material may be separated or a large gap may be formed before the reinforcing tape is welded.

An object of the present invention is to provide a joining method and a joining system capable of stably joining.

The invention according to claim 1 is a method for joining sheet-like materials.
A fusing process in which two non-thermoplastic sheet-like materials sandwiching an adhesive interlining with thermoplastics are melted by ultrasonic waves,
Open the two sheet-like materials whose fusing ends are joined by the adhesive interlining, and reinforce the tape on the opposite side of the adhesive interlining so that the two sheets of the sheet-like materials are straddled by the fusing ends. And the welding process to weld
It is characterized by comprising a removing step of removing the adhesive interlining from the two sheet-like materials to which the reinforcing tape is welded.

The invention according to claim 2 is the method for joining a sheet-like material according to claim 1.
In the welding step, the two open sheet-like materials are heated from both sides, and the adhesive interlining side is heated at a temperature lower than the melting temperature of the interlining. To do.

The invention according to claim 3 is the method for joining a sheet-like material according to claim 1 or 2.
In the fusing step,
Depending on the thickness or material of the sheet-like material or the adhesive interlining, the contact pressure of the tool for fusing, the ultrasonic vibration frequency, or the relative feed rate between the tool and the sheet-like material is changed and adjusted. It is characterized by that.

The invention according to claim 4 is the method for joining a sheet-like material according to any one of claims 1 to 3.
The removing step is characterized in that the adhesive interlining is removed by washing a liquid that dissolves the interlining.

The invention according to claim 5 is the method for joining a sheet-like material according to claim 4.
The adhesive interlining is water-soluble, and the liquid is water.

The invention according to claim 6 is in a sheet-like material joining system.
A fusing device that uses ultrasonic waves to melt two non-thermoplastic sheet-like materials that sandwich an adhesive interlining that has thermoplasticity.
Welding in which two sheets of the sheet-like material opened around the fusing end portion joined by the adhesive interlining are welded with a reinforcing tape on the opposite side of the adhesive interlining so as to straddle the fusing end portion. It is characterized by being provided with an apparatus.

The invention according to claim 7 relates to the sheet-like material joining system according to claim 6.
The welding device includes a first heating portion for heating the reinforcing tape side and a second heating portion for heating the adhesive interlining side with respect to the two opened sheet-like materials.
The second heating unit is characterized in that it is heated at a lower temperature than the first heating unit.

The invention according to claim 8 relates to the sheet-like material joining system according to claim 6 or 7.
The fusing device is
It is characterized in that the contact pressure of the tool for fusing, the ultrasonic vibration frequency, or the relative feed rate between the tool and the sheet-like material can be changed and adjusted.

The invention according to claim 9 is in the sheet-like material joining system according to any one of claims 6 to 8.
It is characterized by comprising a removing device for removing the adhesive interlining from the two sheet-like materials to which the reinforcing tape is welded.

The invention according to claim 10 relates to the sheet-like material joining system according to claim 9.
The removing device is characterized in that the adhesive interlining is removed by washing a liquid that dissolves the interlining.

The invention according to claim 11 relates to the sheet-like material joining system according to claim 10.
The adhesive interlining is water-soluble, and the liquid is water.

In the present invention, since the two sheet-like materials are joined by the fusing step, the welding step, and the removing step, even if the sheet-like material is a material having no thermoplasticity, the seams are not sewn. It is possible to perform good joining.
In addition, since the adhesive interlining is removed from the two sheet-like materials after the reinforcing tape is welded, the joining work can be performed while maintaining the strength of temporary fixing by the adhesive interlining, and the two sheets can be joined. It is possible to perform good welding by suppressing the occurrence of gaps in the sheet-like material and poor bonding.
Further, in the present invention, since the joining system includes a fusing device for carrying out a fusing step and a fusing device for carrying out a welding step, the above joining operation can be easily and efficiently performed.

1 (A) to 1 (C) are explanatory views showing a method of joining sheet-like materials in order of steps. 2 (A) to 2 (D) are explanatory views showing the joining method of the sheet-like material following FIG. 1 (C) in the order of processes. It is a side view which shows the schematic structure of the fusing apparatus. It is a perspective view of the periphery of the fusing part of the fusing device. It is a front view around the fusing part of a fusing device. It is a block diagram which shows the control system of a fusing apparatus. It is a perspective view which shows the schematic structure of the welding apparatus. It is a perspective view of the periphery of the welding part of the welding apparatus. It is a block diagram which shows the control system of a welding apparatus. It is a side view which shows the schematic structure of the removal device. It is a side view which shows the schematic structure of another removal apparatus. It is a side view which shows the schematic structure of the other removal device.

Hereinafter, a method of joining a clothing material as a sheet-like material according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 10. 1 (A) to 2 (D) are explanatory views showing a method of joining clothing materials in order of steps.
In this joining method, a material having thermoplasticity can be joined as a clothing material, but a material having no thermoplasticity, for example, a material having a high content of natural fibers in general or a material having a high content of natural fibers (for example, exceeding 50%). ), Heat-resistant fibers, flame-retardant fibers, leather, artificial leather, and other materials that cannot be heat-welded by ultrasonic processing can also be joined.

The joining method includes a fusing step (FIGS. 1 (A) to 1 (C)) in which two pieces of clothing material C sandwiching a thermoplastic adhesive interlining W are fused by ultrasonic waves, and a fusing end portion C1. The two pieces of clothing material C joined by the adhesive interlining W are opened, and the reinforcing tape T is welded to the opposite side of the adhesive interlining so as to straddle the two pieces of the clothing material C at the fusing end portion C1. A step (FIGS. 2 (A) to 2 (B)) and a removal step of removing the adhesive interlining W from the fusing end portion C1 of the two pieces of clothing material C after welding the reinforcing tape T (FIG. 2 (C)). Or it has FIG. 2 (D)).
Further, the joining method is carried out by a joining system including a fusing device 20 that executes a fusing step and a welding device 30 that executes a welding step.
Hereinafter, each step of the joining method will be described in detail.

[Fusing process]
In the fusing step, first, as shown in FIG. 1 (A), the two garment materials C are overlapped and the adhesive interlining W is inserted between the garment materials C at the positions where they are joined to each other.
The adhesive core W is a thermoplastic resin that is easily dissolved by heat, for example, polyvinyl chloride, polyethylene, polypropylene, polystyrene, acrylonitrile-butadiene-styrene (ABS), acrylonitrile-styrene (AS), polymethylmethacrylic, poly. Vinyl alcohol, polyvinyl chloride, polyethylene terephthalate, polyamide, polyacetal, polycarbonate, polyphenylene ether, polybutylene terephthalate, polyvinylidene fluoride resin, compounds containing some of these resin components, and additives added to these resin components. It is a sheet-like or tape-like member made of other components and other thermoplastic materials.
The adhesive interlining W may be widely inserted between the two pieces of clothing material C, or may be inserted as a narrow tape so as to intervene only in the portion to be fusing.

Then, as shown in FIG. 1 (B), the two pieces of clothing material C in which the adhesive interlining W is inserted are melted by a fusing device 20 using ultrasonic vibration. Here, the object is cut by ultrasonic vibration and pressure, and the cut end portion (also referred to as a fusing end portion) is simultaneously melted and joined.
In this case, the two garment materials C and the adhesive interlining W are cut, and as shown in FIG. 1C, only the adhesive interlining W melts and functions like an adhesive. The fusing end portion C1 of the clothing material C is joined. That is, for example, if the clothing material C is fibrous, the molten adhesive interlining W penetrates into the gaps between the fibers and joins. When the clothing material C is non-fibrous, it is joined by the adhesiveness and adhesiveness of the melted adhesive interlining W.
The fusing is performed in a straight line or a gentle curve along the feeding direction of the fusing device 20 described later.

Here, the fusing device 20 will be described. FIG. 3 is a side view showing a schematic configuration of the fusing device 20, FIG. 4 is a perspective view of the periphery of the fusing portion, FIG. 5 is a front view of the periphery of the fusing portion, and FIG. 6 is a block showing a control system of the fusing device 20. It is a figure.
As shown in these figures, the fusing device 20 sends two sheets of clothing material C and an adhesive core W (hereinafter referred to as polymerized clothing material C) stacked from the lower side in a certain direction. A roller 21, a circular female 22 that rotates together between the pair of lower rollers 21, a pair of upper rollers 23 that cooperate with the pair of lower rollers 21 to send the laminated clothing material C in a certain direction, and clothing. It includes an ultrasonic vibration generator 24 that applies ultrasonic vibration to the material C, an elevating mechanism 25 of the ultrasonic vibration generator 24, and a control device 26 that controls each part of the fusing device 20.

The ultrasonic vibration generator 24 includes an oscillator 244 that generates a pulse voltage according to the frequency of the ultrasonic vibration, and an oscillator 241 that generates mechanical vibration of the ultrasonic vibration frequency in response to the application of the pulse voltage from the oscillator 244. It includes a cone 242 that amplifies the ultrasonic vibration from the vibrator 241 and a horn 243 that further amplifies the ultrasonic vibration.

The oscillator 244 applies, for example, a high-frequency pulse voltage of 16 to 40 kHz to the oscillator 241. The oscillator 244 is connected to the control device 26 via the power supply circuit 244a, and the oscillation frequency can be arbitrarily controlled.
The oscillator 241 is a so-called bolt-tightened Langevin type oscillator using a piezo element.
The tip of the cone 242 is directed downward, and the amplitude is amplified toward the tip.
The horn 243 is provided at the tip of the cone 242. The tip of the horn 243 is also directed downward, amplifying the amplitude towards the tip. The tip of the horn 243 is a tool that comes into contact with the polymerized clothing material C, and since the tip is placed between the pair of upper rollers 23, it is shaped like a flat plate for easy placement. It is formed. Further, the width direction of the end surface of the tip portion of the horn 243 is parallel to the feeding direction of the garment material C in the polymerized state, and the end surface is arranged so as to be in contact with the tip portion of the circular scalpel 22 described later.

The pair of lower rollers 21 are arranged concentrically with each other, are rotationally driven by the lower feed motor 211, and their outer peripheral surfaces are in contact with the clothing material C from below and can be fed in a predetermined direction.
Therefore, the outer peripheral surfaces of the pair of lower rollers 21 are formed of a material having a large friction coefficient at the time of contact with the clothing material C, or have a structure (knurling or the like) in which the friction coefficient is large.
Further, the lower feed motor 211 is connected to the control device 26 via the drive circuit 211a, and its rotation speed (feed speed) can be arbitrarily controlled.

The circular female 22 is arranged between the pair of lower rollers 21 and has substantially the same outer diameter as the lower roller 21, and the width of the circular female 22 becomes narrower as the cross-sectional shape along the rotation center line at the outer peripheral portion thereof goes outward in the radial direction. It has a sharp shape.
At the time of fusing, the sharp tip of the circular scalpel 22 rotates while contacting the lower side of the polymerized clothing material C. Further, at the time of fusing, the horn 243 of the ultrasonic vibration generator 24 comes into contact with the tip of the circular scalpel 22 via the polymerized clothing material C to apply ultrasonic vibration, so that the polymerized clothing The material C is well cut and melted.

The pair of upper rollers 23 are rotatably supported above the pair of lower rollers 21 by a support arm 231 about a rotation axis parallel to the pair of lower rollers 21. The pair of upper rollers 23 are rotationally driven by the upper feed motor 232 so that the feed speed is equal to that of the lower roller 21.
The upper feed motor 232 is connected to the control device 26 via a drive circuit 232a, and its rotation speed (feed speed) can be arbitrarily controlled.

Further, the support arm 231 can move the pair of upper rollers 23 up and down by performing a rotational operation, separates the upper roller 23 from the lower roller 21 by ascending, and separates the upper roller 23 from the lower roller 21 by descending. The upper roller 23 can be brought into contact with the upper roller 23.
Therefore, the upper roller 23 can be raised to insert the polymerized garment material C between the lower roller 21 and the upper roller 23, and the upper roller 23 can be lowered to the polymerized garment with the lower roller 21. Feeding can be performed so as to sandwich the material C.
The upper roller 23 and the lower roller 21 may be configured to be rotationally driven from one common motor via a power transmission mechanism.

The elevating mechanism 25 elevates and elevates the slide block 251 attached to the ultrasonic vibration generator 24, the slide rail 252 that slidably supports the slide block 251 in the vertical direction, and the slide block 251 via the ball screw mechanism 254. It is equipped with a motor 253.
Then, when the ultrasonic vibration generator 24 is raised via the slide block 251 by the drive of the elevating motor 253, the tip of the horn 243 is separated upward from the tip of the circular female 22, and when it is lowered, the tip of the horn 243 is lowered. The portion can be brought into contact with the tip portion of the circular scalpel 22.
The elevating motor 253 is connected to the control device 26 via the drive circuit 253a, and the operating amount (height of the horn 243) can be arbitrarily controlled.
A ball nut (not shown) of the ball screw mechanism 254 is built in the slide block 251 via a spring material. As a result, the contact pressure of the horn 243 with respect to the polymerized clothing material C can be controlled according to the amount of descent from the reference position with reference to the position where the tip of the horn 243 contacts the polymerized clothing material C. it can.

In the control device 26, the worker performing the joining is in contact with the contact pressure of the horn 243 with respect to the polymerized clothing material C, the ultrasonic vibration frequency of the ultrasonic vibration generator 24, and the relative of the horn 243 and the polymerized clothing material C. The input unit 261 for arbitrarily setting and inputting the feed speed is connected via the interface 261a.

When the contact pressure of the horn 243 is set, the control device 26 controls the operating amount of the elevating motor 253 so that the elevating motor 253 has a height corresponding to the set value of the contact pressure.
When the ultrasonic vibration frequency of the ultrasonic vibration generator 24 is set, the control device 26 controls the oscillator 244 to apply a pulse voltage having a frequency corresponding to the set value to the vibrator 241.
Further, when the relative feed rate of the horn 243 and the clothing material C in the polymerized state is set, the control device 26 causes the lower feed motor 211 and the upper feed motor 232 to correspond to the set values of the feed speeds, respectively. Drive control is performed so that the number of revolutions is the same.

As a result, the worker performing the joining work can appropriately perform the contact pressure of the horn 243, the ultrasonic vibration frequency, or the garment in a state of being polymerized with the horn 243, depending on the thickness or material of the garment material C or the adhesive interlining W. The relative feed rate of the material C can be changed and adjusted.

It should be noted that the contact pressure of the horn 243, the ultrasonic vibration frequency, and the clothing material C in a state of being overlapped with the horn 243, which are appropriate when these are specified by using the thickness and the material of the clothing material C and the adhesive core W as parameters. Table data that defines each value of the relative feed rate is prepared, and when the above parameters are input from the input unit 261, the contact pressure of the horn 243, the ultrasonic vibration frequency, and the state of overlap with the horn 243 are automatically obtained. The control device 26 may control each part so as to determine the respective values of the relative feed rates of the clothing material C and perform the fusing operation based on these.

[Welding process]
In the welding step, first, as shown in FIG. 2A, a pair of clothing materials C are developed on both sides and arranged on the same plane with the joined fusing end portion C1 as the center. In the polymerized garment material C that has been fused, the garment material C and the adhesive interlining W are not joined in a planar shape, but are joined linearly along the fusing end portion C1. A pair of clothing materials C can be opened and developed in a plane with the portion as an axis. At this time, the adhesive interlining W is in a state of projecting to one side of a pair of garment materials C (hereinafter, referred to as garment materials C in the unfolded state) developed in a plane.

Then, as shown in FIG. 2B, the reinforcing tape T is straddled by the welding device 30 with the fusing end portion C1 on the surface of the unfolded clothing material C opposite to the adhesive interlining W. Perform welding.
The reinforcing tape T has a structure having a flat base material and a welding layer formed on one side of the base material.
The welded layer is a thermoplastic resin that is easily melted by heat, like the adhesive core W, such as polyvinyl chloride, polyethylene, polypropylene, polystyrene, acrylonitrile butadiene styrene (ABS), acrylonitrile styrene (AS), and poly. Methylmethacryl, polyvinyl alcohol, polyvinylidene chloride, polyethylene terephthalate, polyamide, polyacetal, polycarbonate, polyphenylene ether, polybutylene terephthalate, polyvinylidene fluoride resin, compounds containing these resin components in part, and these resin components It consists of components with additives added to it, and other thermoplastic materials.
However, it is preferable that the welding layer of the reinforcing tape T is made of a material that has a lower melting temperature than the adhesive interlining W and does not mix with the adhesive interlining W at the time of melting. For example, the adhesive interlining W is made of a polyamide resin, and the welding layer of the reinforcing tape T is made of a polyurethane resin.
Further, the base material of the reinforcing tape T is preferably a material having higher mechanical strength and a higher melting temperature than the welding layer.

Here, the welding device 30 will be described. FIG. 7 is a perspective view showing a schematic configuration of the welding device 30, FIG. 8 is a perspective view of the periphery of the welding portion, and FIG. 9 is a block diagram showing a control system of the welding device 30.
As shown in these figures, the welding device 30 serves as a lower belt 31 that sends the unfolded clothing material C in a certain direction and a second heating unit that heats the unfolded clothing material C via the lower belt 31. The lower heater 32, the upper belt 33 that sends the unfolded clothing material C in the same direction as the lower belt 31, and the upper heater 34 as the first heating unit that heats the unfolded clothing material C via the upper belt 33. A tape guide 35 for feeding the reinforcing tape T between the upper belt 33 and the unfolded clothing material C to be fed, and a control device 36 for controlling each part of the welding device 30 are provided.

The lower belt 31 is an endless annular belt stretched on a driving roller (not shown) driven by a lower transport motor 311 and a plurality of driven rollers 312, and is made of, for example, a material having excellent heat resistance and abrasion resistance such as fluororesin. It is formed.
The main roller and the plurality of driven rollers 312 are rotatably supported by the support frame body 313. Further, the two driven rollers 312 located at the upper part are arranged horizontally side by side, and when crossing between these driven rollers 312, the lower belt 31 comes into contact with the unfolded clothing material C from below and is in the belt transport direction. Can be sent.
Further, the lower transfer motor 311 is connected to the control device 36 via the drive circuit 311a, and its rotation speed (feed speed) can be arbitrarily controlled.

The lower heater 32 is located inside the lower belt 31 and is arranged between the two driven rollers 312 located at the upper part, and heats the unfolded clothing material C via the lower belt 31.
Further, the lower heater 32 can adjust the heating temperature according to the amount of energization from the power supply circuit 32a, and the power supply circuit 32a is connected to the control device 36. That is, the heating temperature of the lower heater 32 can be arbitrarily controlled by the control device 36.

The upper belt 33 is an endless annular belt stretched on a main roller (not shown) driven by an upper transfer motor 331 and a plurality of driven rollers 332. For example, a material having excellent heat resistance and abrasion resistance such as fluororesin is used. It is formed.
The main roller and the plurality of driven rollers 332 are rotatably supported by the support frame body 333. Further, the two driven rollers 332 located at the lower part are arranged horizontally side by side, and when crossing between these driven rollers 332, the upper belt 33 comes into contact with the unfolded clothing material C from above and is in the belt transport direction. Can be sent.
Further, the upper transfer motor 331 is connected to the control device 36 via the drive circuit 331a, and its rotation speed (feed speed) can be arbitrarily controlled.

The upper heater 34 is located inside the upper belt 33 and is arranged between two driven rollers 332 located at the lower part, and heats the unfolded clothing material C via the upper belt 33.
Further, the upper heater 34 can adjust the heating temperature according to the amount of energization from the power supply circuit 34a, and the power supply circuit 34a is connected to the control device 36. That is, the heating temperature of the upper heater 34 can be arbitrarily controlled by the control device 36.

The tape guide 35 has a structure that supports both end portions of the reinforcing tape T in the width direction. The tape guide 35 is attached to the support frame 313 so as to feed the reinforcing tape T from the upstream side of the two driven rollers 332 located at the lower part with respect to the driven roller 332 located on the upstream side in the feeding direction. Has been done.

Further, the support frame body 333 body is supported so as to be able to move up and down, and the raising and lowering operation is imparted by the air cylinder 334.
Then, when the support frame body 333 and the upper belt 33 rise due to the operation of the air cylinder 334, the clothing material C in the unfolded state is inserted between the upper belt 33 and the lower belt 31, separated from the lower belt 31. When the support frame 333 and the upper belt 33 are lowered, they come into contact with or approach the lower belt 31 via the unfolded garment material C, and the unfolded garment is between the upper belt 33 and the lower belt 31. The material C can be transported while being heated.
The operating state of the air cylinder 334 can be switched by the solenoid valve 335, and the solenoid valve 335 is connected to the control device 36 via the drive circuit 335a. Therefore, the ascending / descending operation of the upper belt 33 can be controlled by the control device 36.

In the control device 36, the worker performing the joining includes the transport speed with respect to the unfolded clothing material C, the heating temperature of the surface of the adhesive interlining W side in the unfolded clothing material C, and the reinforcement in the unfolded clothing material C. An input unit 361 for arbitrarily setting and inputting the heating temperature of the surface on the tape T side is connected via the interface 361a.

When the transport speed for the unfolded clothing material C is set, the control device 36 drives the lower transport motor 311 and the upper transport motor 331 so that the rotation speeds correspond to the set values of the transport speeds. Take control.
When the heating temperature of the surface of the adhesive interlining W side of the unfolded clothing material C is set, the control device 36 of the power supply circuit 32a causes the lower heater 32 to generate heat at the set heating temperature. Control the amount of energization.
When the heating temperature of the surface of the reinforcing tape T side of the unfolded clothing material C is set, the control device 36 sets the amount of electricity supplied to the power supply circuit 34a so that the upper heater 34 generates heat at the set heating temperature. Control.

Here, in the welding step by the welding apparatus 30, the upper heater 34 that heats the reinforcing tape T side is set to heat the clothing material C in the unfolded state at a temperature higher than the melting temperature of the welding layer. The lower heater 32 that heats the adhesive interlining W side is preferably set to heat at a temperature lower than the melting temperature of the adhesive interlining W.
Further, it is preferable that the control device 36 controls the upper heater 34, which heats the reinforcing tape T side, to heat at a higher temperature than the lower heater 32, which heats the adhesive interlining W side.

[Removal process]
In the removing step, as shown in FIG. 2C, the adhesive interlining W is removed from the fusing end portion C1 of the two clothing materials C with the reinforcing tape T.
In this case, the adhesive interlining W may be manually peeled off by the operator.
In addition, the removal device 40 shown in FIG. 10 may be added to the joining system.

The removing device 40 includes a transporting unit that conveys a pair of clothing materials C to which the reinforcing tape T is welded, and a removing portion that removes the adhesive interlining W from the pair of clothing materials C that are conveyed.
The transport unit includes a transport roller 41 as a first roller for transporting the pair of clothing materials C from the reinforcing tape T side, and a peeling roller 42 as a second roller for transporting the pair of clothing materials C from the adhesive interlining W side. With the pair of clothing materials C sandwiched between them, they rotate in opposite directions and transport in a certain direction.

The removing portion has a peeling roller 42 that carries out transportation as described above and peels off the adhesive interlining W from the clothing material C, and a scraping blade 43 that scrapes off the adhesive interlining W from the peeling roller 42.
The peeling roller 42 has a material having an adhesive outer peripheral surface, a structure in which irregularities are repeated in the circumferential direction, or a structure with spines, and is configured to adhere the adhesive interlining W to the outer peripheral surface and wind it up. ..
The scraping blade 43 has a blade tip portion that is wedge-shaped over the entire width of the peeling roller 42 and is abutted against the outer peripheral surface of the peeling roller 42 in a direction opposite to the rotation direction. As a result, it is possible to scrape off the peeled adhesive interlining W adhering to the outer peripheral surface of the peeling roller 42.

Further, a heating roller 44 as a heating portion for heating the adhesive interlining W before removal may be arranged on the upstream side of the peeling roller 42 in the transport direction. By heating the adhesive interlining W before removing it, it is possible to facilitate peeling from the clothing material C and improve the adhesiveness of the peeling roller 42 to the outer peripheral surface.
Further, in order to obtain the same effect as the heating roller 44, the heat source 45 may be stored in the peeling roller 42 instead of the heating roller 44. In this case as well, the adhesive interlining W can be heated at the time of peeling to improve the peelability and the adhesiveness to the peeling roller 42.

Further, as the removing device, a pair of clothing materials C to which the reinforcing tape T is welded may be conveyed in a certain direction, and the adhesive interlining W may be heated to soften and scraped off with a brush.

In addition, when joining clothing material C, we want to use only clothing material C, which is a natural material, for quality, texture and feel, hygroscopicity, and at least one side, we want to use only clothing material C, which is a natural material. For various reasons, there is a demand that the adhesive interlining W made of a thermoplastic material be completely removed from the clothing material C.
In order to meet such demands, the adhesive interlining W is made of a material having both thermoplasticity and water solubility, and as shown in FIG. 2D, in the removal step, water as a liquid is used. The adhesive interlining W may be melted and removed.

FIG. 11 is a schematic configuration diagram of a removing device 40A for removing the water-soluble adhesive interlining W from the clothing material C. In this case, the removal device 40A shown in FIG. 11 may be added to the joining system.
As shown in the figure, the removing device 40A includes a plurality of transport rollers 41A as transport parts for transporting a pair of clothing materials C to which the reinforcing tape T is welded, and a high pressure provided in the middle of the transport path by each transport roller 41A. A high-pressure cleaning nozzle 42A that ejects steam, a brush 43A as a cleaning means for cleaning the portion where the adhesive interlining W has been peeled off by high-pressure steam, and a drying portion 44A that blows warm air that removes moisture by high-pressure steam. There is.
As a result, high-pressure steam is sprayed onto the adhesive interlining W of the pair of clothing materials C to which the reinforcing tape T to be conveyed is welded, and the adhesive interlining W is melted by the moisture contained in the high-pressure steam. It can be peeled off and removed by the wind pressure.
In the case of this removing device 40A, since the moisture contained in the high-pressure steam dissolves the adhesive interlining W, the adhesive interlining W that has soaked into the fibers of the clothing material C is also dissolved and removed to remove the adhesive interlining. It is possible to avoid and reduce the remaining W.
In the high-pressure washing nozzle 42A, the pair of clothing materials C to which the reinforcing tape T is welded may be sprayed with high-pressure steam from the adhesive interlining W side, but when sprayed from the reinforcing tape T side, the clothing material C is sprayed. The permeating high-pressure steam can further promote the peeling of the adhesive interlining.
Further, in the removal device 40A, instead of the high-pressure washing nozzle 42A ejecting high-pressure steam, normal temperature water or hot water may be ejected at high pressure.
Further, as shown in FIG. 11, the vacuum nozzle 45A as a suction means may be provided in place of the brush 43A and the drying portion 44A, or in combination with the brush 43A and the drying portion 44A. The vacuum nozzle 45A is connected to a negative pressure source such as a pump, whereby the residue of the adhesive interlining W or the adhesive interlining W soaked into the fibers of the clothing material C can be sucked and removed. Further, the vacuum nozzle 45A can also suck water from the clothing material C by a suction action.

Further, the water-soluble adhesive interlining W may be removed from the clothing material C by the removing device 40B shown in FIG.
The removing device 40B includes a water tank 41B filled with water and a plurality of transport rollers 42B as transport portions for transporting a pair of clothing materials C to which a reinforcing tape T is welded in the water tank 41B.
Then, the adhesive interlining W is melted and removed by passing the water in the water tank 41B through the pair of clothing materials C to which the tape T is welded.
Also in this configuration, a brush 43A and a drying portion 44A for blowing warm air for removing moisture by high-pressure steam may be provided as cleaning means for cleaning the portion where the adhesive interlining W has peeled off.

Further, since it is sufficient that the adhesive interlining W can be melted and removed, the removing device is a so-called washing machine that agitates and cleans a pair of clothing materials C to which the reinforcing tape T is welded in a water tank filled with water. It may have the same configuration as.

[Technical Effects of Embodiments of the Invention]
In the above embodiment, the fusing step of fusing the two pieces of clothing material C sandwiching the adhesive interlining W by ultrasonic waves and the opposite of the adhesive interlining W so as to open the two pieces of clothing material C and straddle them. Since the two pieces of clothing material C are joined by a welding step of welding the reinforcing tape T to the side and a removing step of removing the adhesive interlining W, the clothing material C is a material having no thermoplasticity. Even in some cases, seamless joining can be performed satisfactorily without sewing.
Further, since the adhesive interlining W is removed from the two pieces of clothing material C after the reinforcing tape T is welded, the joining work up to the removal step is performed while maintaining the strength of temporary fixing by the adhesive interlining W. This makes it possible to suppress the occurrence of gaps and poor bonding between the two clothing materials C, and to perform good bonding.
Further, since the joining system includes a fusing device 20 for carrying out the fusing step and a welding device 30 for carrying out the fusing step, the joining method can be easily and efficiently performed.

Further, in the welding step of the joining method, the two open clothing materials C are heated from both sides by the welding device 30, and the adhesive interlining W side is higher than the melting temperature of the adhesive interlining W. Since it is heated at a low temperature, it is possible to perform better joining work while maintaining the strength of temporary fixing by the adhesive interlining W.
Further, the welding device 30 also sets the heating temperature of the lower heater 32 on the adhesive interlining W side to be lower than that of the upper heater 34 on the reinforcing tape T side with respect to the two pieces of clothing material C. It is possible to perform better joining work while maintaining the strength of temporary fixing by the adhesive interlining W.

Further, in the fusing step of the joining method, the pressure of the horn 243 provided with the tool for fusing, the ultrasonic vibration frequency, or the horn 243 and the clothing material C, depending on the thickness or material of the clothing material C or the adhesive interlining W. Since the relative feed rate of is changed and adjusted, it is possible to perform appropriate fusing with respect to various clothing materials C and adhesive interlining W.
Further, the fusing device 20 can set the pressure of the horn 243 including the tool for fusing, the ultrasonic vibration frequency, and the relative feed speed between the horn 243 and the clothing material C by the input unit 261, and is a control device. In No. 26, since the fusing device 20 is operated according to the set value, it is possible to perform appropriate fusing on various clothing materials C and the adhesive interlining W.

Further, since the joining system includes removal devices 40, 40A, and 40B for removing the adhesive interlining W from the clothing material C to which the reinforcing tape T is welded, a series of steps including a fusing step, a welding step, and a removing step. The work can be performed easily and efficiently.

Further, in the removal step of the joining method, when the adhesive interlining W is removed by washing with water as a liquid that dissolves the adhesive interlining W, the adhesive interlining W soaked in the clothing material C is used. Can also be removed, and the adhesive interlining W can be removed more strictly.
Further, since the removing devices 40A and 40B remove the adhesive interlining W by washing with water, it is possible to easily realize more strict removal of the adhesive interlining W.

[Other]
The details shown in the above-described embodiment can be appropriately changed without departing from the spirit of the invention.
For example, in the joining system, the fusing device 20, the welding device 30, and the removing device 40 (or 40A, 40B) may be communicated with each other by a transport device for transporting the clothing material C.
Further, in that case, between the fusing device 20 and the fusing device 30, it is necessary to develop two pieces of clothing material C temporarily fixed at the fusing end portion by the adhesive interlining W in the fusing end portion C1. However, a deploying device may be interposed in which one of the clothing materials C is blown or blown by a roller to be deployed.
Further, although the fusing device 20 and the welding device 30 are individually provided with control devices 26 and 36, they may be connected so as to be communicable and the operation control may be communicated and coordinated. .. In that case, if the removal devices 40, 40A, and 40B also have a control device, they may be added to the cooperation.
Alternatively, the fusing device 20 and the welding device 30 may be collectively controlled by one control device. In that case, the removal devices 40, 40A, and 40B may be added to the control performed collectively by one control device.
Further, when a transport device or a deploying device is added to the joining system, these may also be added in cooperation with the control device or under the integrated control of one control device.

20 Fusing device 24 Ultrasonic vibration generator 26 Control device 30 Welding device 32 Lower heater (second heating unit)
34 Upper heater (first heating part)
36 Control device 40, 40A, 40B Removal device 243 Horn (tool)
C Clothing material (sheet-like material)
C1 Fused end T Reinforcing tape W Adhesive interlining

Claims (11)

A fusing process in which two non-thermoplastic sheet-like materials sandwiching an adhesive interlining with thermoplastics are melted by ultrasonic waves,
Open the two sheet-like materials whose fusing ends are joined by the adhesive interlining, and reinforce the tape on the opposite side of the adhesive interlining so that the two sheets of the sheet-like materials are straddled by the fusing ends. And the welding process to weld
A method for joining a sheet-like material, which comprises a removing step of removing the adhesive interlining from the two sheet-like materials to which the reinforcing tape is welded. In the welding step, the two open sheet-like materials are heated from both sides, and the adhesive interlining side is heated at a temperature lower than the melting temperature of the interlining. The method for joining a sheet-like material according to claim 1. In the fusing step,
Depending on the thickness or material of the sheet-like material or the adhesive core, the contact pressure, the ultrasonic vibration frequency, or the relative feed rate between the tool and the sheet-like material of the fusing tool is changed and adjusted. The method for joining a sheet-like material according to claim 1 or 2, wherein the sheet-like material is joined. The method for joining a sheet-like material according to any one of claims 1 to 3, wherein the removing step removes the adhesive interlining by washing a liquid that dissolves the adhesive interlining. The method for joining a sheet-like material according to claim 4, wherein the adhesive interlining is water-soluble and the liquid is water. A fusing device that uses ultrasonic waves to melt two non-thermoplastic sheet-like materials that sandwich an adhesive interlining that has thermoplasticity.
Welding in which two sheets of the sheet-like material opened around the fusing end portion joined by the adhesive interlining are welded with a reinforcing tape on the opposite side of the adhesive interlining so as to straddle the fusing end portion. A sheet-like material bonding system characterized by being equipped with a device. The welding device includes a first heating portion for heating the reinforcing tape side and a second heating portion for heating the adhesive interlining side with respect to the two opened sheet-like materials.
The sheet-like material joining system according to claim 6, wherein the second heating unit is heated at a lower temperature than the first heating unit. The fusing device is
The sheet-like material according to claim 6 or 7, wherein the contact pressure of the tool for fusing, the ultrasonic vibration frequency, or the relative feed rate between the tool and the sheet-like material can be changed and adjusted. Joining system. The joining of the sheet-like material according to any one of claims 6 to 8, wherein the removing device for removing the adhesive interlining from the two sheet-like materials to which the reinforcing tape is welded is provided. system. The sheet-like material joining system according to claim 9, wherein the removing device removes the adhesive interlining by washing a liquid that dissolves the adhesive interlining. The sheet-like material joining system according to claim 10, wherein the adhesive interlining is water-soluble and the liquid is water.

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