JPH0376159B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an edge folding device for folding the edges of a work cloth.

[Prior Art] Conventionally, as this type of device, for example, the
The one disclosed in Publication No. 5115 is known. This device alternately repeats folding in the edge of the workpiece cloth and feeding the workpiece cloth by the feed foot through the cooperation of the guide member and the operating member, and processes the workpiece cloth along the crease line while sequentially folding the edge of the workpiece cloth. It is designed to transport cloth.

[Problems to be Solved by the Invention] However, in the conventional apparatus described above, the edge of the work cloth is simply folded in by the guide member and the actuating member, and no device is devised to fix the folding. Nakatsuta. Therefore, depending on the type of fabric and the degree of folding, the folded state may become unstable, and there is a risk that the folded portion may return to its original state.

In addition, in the conventional device, the work cloth is configured to be fed in only one direction by the feed legs, so it is possible to bend one side of the work cloth in a straight line, but it is not possible to bend it in a curved shape. This is difficult because the folded portion of the processed cloth will return to its original position. Furthermore, even when folding in a straight line, after bending one side of the fabric, when attempting to fold the other side, the worker must set the fabric in the machine again. There is also the problem of bad sex.

This invention was made in order to solve the above-mentioned problems, and its purpose is to fix and stabilize the folded part of the edge of the processed cloth, and also to bond the folded part for fixing. To provide an edge folding device for a work cloth, which can reduce the amount of adhesive used for folding the work cloth, and can easily bend the work cloth not only in a straight line but also in a curved shape along the outer peripheral edge of the work cloth.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a folding head that folds a part of the outer peripheral edge of a work cloth held by a cloth holding means, and a folding head feeding means for relatively moving the folding head along the outer circumferential edge of the fabric to the next folding position after folding a part of the outer circumferential edge of the fabric; A work cloth edge folding device configured to repeat folding of the work cloth and movement of the folding head, wherein the folding head is formed with a notch and is held by the cloth holding means. a cloth support plate on which the outer peripheral edge of the processed cloth is placed so as to cover the notch, and an action part capable of pressing the work cloth at a position adjacent to the notch,
A predetermined amount of thread adhesive, which exhibits adhesive properties when heated, is supplied to the workpiece cloth delivery side of the folding guide through a guide formed in the working part of the folding guide, which is arranged to be movable up and down. The filamentous adhesive supplying means is disposed so as to be movable between a retracted position in which it is recessed into the cutout of the fabric support plate and a folded position in which it overlaps with the upper surface of the action part of the folding guide that presses the processed fabric, and a folding plate that bends the outer peripheral edge of the cloth above the working part of the folding guide with the supplied filament adhesive in between; an ultrasonic vibrator for applying ultrasonic vibrations by pressing the folded portion of the work cloth which has been folded with the filament adhesive interposed between folded plates; A cutting means is provided for cutting the filamentous adhesive continuous to the work cloth after adhesion and before the folding head is moved by the folding head feeding means.

[Function] Therefore, the outer peripheral edge of the work cloth held by the cloth holding means is placed so as to cover the notch of the cloth support plate of the folding head, and the working part of the folding guide is located at a position adjacent to the notch. Press the outer edge of the processed cloth at
The folding plate is moved from the retracted position to the folded position to fold the outer peripheral edge of the work cloth covering the notch above the action part. At this time, the filamentous adhesive is passed through a guide formed in the working portion of the folding guide, and is supplied in a predetermined amount to the work cloth delivery side of the folding guide by the filamentous adhesive supply means. This thread-like adhesive does not have adhesive properties at room temperature, but exhibits adhesive properties when heated. sandwiched between. However, as long as the cloth is not heated, the folded portions will not be inadvertently glued together by pressing the folded cloth before the folds are formed.

After this, the output horn of the ultrasonic transducer presses the folded part of the work cloth that is not held by the fold guide and the folding plate on the feed-out side of the work cloth from the fold guide to form a crease. At the same time, ultrasonic vibrations are applied to instantly heat the part. Therefore, the filamentous adhesive exhibits adhesive properties and fixes the bent portion.

After fixing the folded portion, the cutting state cuts the thread-like adhesive continuous to the folded portion of the work cloth. After this, the folding head is moved along the outer peripheral edge of the work cloth to the next folding position, and the above-mentioned folding, fixing of the previously folded folded part, and cutting of the thread-like adhesive are performed. be exposed. In this way, the folding and fixing are performed to cut the thread-like adhesive at each of the moving positions where the folding head is moved along the outer peripheral edge of the work cloth held by the cloth holding means by the folding head feeding means. This allows for good workability and allows the outer peripheral edge of the fabric to be bent not only in a straight line but also in a curved line.The bending head is moved after cutting the filamentous adhesive. The filamentous adhesive does not hinder its movement, and the amount of filamentous adhesive used is reduced.

[Example] Hereinafter, an example embodying the present invention will be described in detail with reference to the drawings.

FIG. 3 is a diagram showing a schematic configuration of this edge folding device. A transport board 3 is supported on a base 1 so as to be able to reciprocate on a pair of guide rails 2 extending in parallel along the Y direction. A male threaded rod 4 extending parallel to both guide rails 2 is rotatably disposed on the base 1, and a portion of the rod 4 is screwed into a female threaded portion (not shown) provided on the lower side of the transport board 3. are combined. Further, one end of the male threaded rod 4 is drivingly connected to a Y-direction conveyance motor 5 attached to the base 1. Then, the male threaded rod 4 is rotated in forward and reverse directions based on the drive of the Y-direction conveyance motor 5.
The transport board 3 is reciprocated on the guide rail 2 in the Y direction.

A transport block 7 is supported on the transport board 3 so as to be reciprocally movable through a pair of guide rods 6 extending perpendicularly to the guide rail 2, that is, extending in the X direction perpendicular to the Y direction. Between both guide rods 6 is a male threaded rod 8 extending parallel to the guide rods 6.
is rotatably arranged, and the rod 8 is screwed into the conveying block 7. Further, one end of the male threaded rod 8 is drivingly connected to an X-direction transport motor 9 attached to the transport board 3. The male threaded rod 8 is rotated in forward and reverse directions based on the drive of the X-direction transport motor 9, so that the transport block 7 is reciprocated on the guide rod 6 in the X direction.

A motor 10 for rotation in the θ direction is fixed on the transport block 7. On this motor 10 for rotation in the θ direction, an edge bending head 11 consisting of a machine frame 31 equipped with an edge bending mechanism etc. that is operated to bend a predetermined area of the edge Wa of the work cloth W is mounted as a base. 12.

The motor 10 for rotation in the θ direction is a well-known high-performance DD motor without a speed reduction mechanism, and is connected to the base 12.
is fixed to an output part that is rotatable in the θ direction.
Then, by driving the motor 10 for rotation in the θ direction, the edge bending head 11 is rotated along with the base 12 in the θ direction.
rotated in the direction.

Therefore, the movement of the conveyor plate 3 or the conveyor block 7,
Based on the rotation of the base 12, the edge bending head 11 is moved in the Y direction or the X direction and rotated in the θ direction. The X-direction transport motor 9, the Y-direction transport motor 5, the θ-direction rotation motor 10, etc. constitute a bending head feeding means.

On the other hand, in the vicinity of the base 1, a cloth clamp 13 is provided as cloth holding means for holding the work cloth W. This cloth clamp 13 is the lower plate 13
a and an upper plate 13b, and is attached to a movable support frame 14. That is, the lower plate 13a is horizontally supported and fixed to the support frame 14. Further, the upper plate 13b is attached to the lower plate 13a at its base end shaft support 13c so as to be rotatable upward, and is crimped to the lower plate 13a by a biasing member (not shown).

In order to hold the work cloth W in the cloth clamp 13, the upper plate 13b is rotated upward, and both plates 13
The work cloth W is held between a and 13b. Further, in order to bend a predetermined area of the edge Wa of the held work cloth W, the support frame 14 is moved so that the cloth clamp 13 faces the edge bending head 11, as shown in FIG. Then, the edge Wa of the work cloth W is set in the edge folding head 11. In this set state, the cloth clamp 13 is fixed at the same position, and only the edge bending head 11 is moved along the edge Wa of the work cloth W.

Next, the edge bending mechanism assembled into the edge bending head 11 will be explained.

5 to 9 are diagrams showing the configuration of the edge bending mechanism and its series of operations. The edge bending mechanism is assembled to the machine frame 31, and the work cloth W held by the cloth clamp 13
A fixed plate-shaped anvil (fabric support plate) 21 is provided to receive the edge Wa of the work cloth W, and its upper surface serves as a reference support surface S on which the edge Wa of the work cloth W is placed. Furthermore, a notch recess 21b is formed in one side edge 21a of the anvil 21.

A folding guide 22 made of a thin plate and having a substantially L-shaped cross section is disposed above the anvil 21 so as to be movable up and down. The folding guide 22 is drivingly connected to a folding guide drive cam (not shown), and is moved up and down based on the operation of the drive cam. Further, the tip of this folding guide 22 serves as a working portion 23 that holds the work cloth W between it and the anvil 21, and its tip edge 23a forms an edge.
Acts as a guide to form creases when folding Wa.

The folding guide 22 is formed with a notch 22a that continues upward from a part of the action portion 23, and a presser member 25 having an L-shaped cross section is arranged to be movable up and down in correspondence with the notch 22a. . This pressing member 25
is drivingly connected to a pressing member drive cam (not shown), and is moved up and down based on the operation of the drive cam. The tip of this pressing member 25 is a notch 22a.
The movement of the work cloth W is regulated by auxiliary pressing of a part of the work cloth W through.

Further, a spatula-shaped folded plate 26 is movably disposed corresponding to the notch recess 21b of the anvil 21. This folding plate 26 is drivingly connected to a folding plate driving cam (not shown), and is moved along a predetermined path based on the operation of the driving cam. That is, folded plate 2
6, the distal end of the anvil 21 moves from the retracted position below the anvil 21 shown by the solid line in FIGS. 5 and 9.
The sixth,
The folding guide 22 is moved to the operating position shown by the two-dot chain line in FIGS. 7 and 9, overlapping the upper surface of the operating portion 23, and then follows the almost reverse route to the above and is shown by the solid line in FIGS. 8 and 9. It is returned to the retracted position shown.

The anvil 21, the folding guide 22, the folding plate 26, etc. constitute a folding means for folding a predetermined area of the edge Wa of the work cloth W held by the cloth clamp 13. Guide 22
The edge portion Wa of the work cloth W held under pressure between the folding plate 26 and the pressing member 25 is folded in by a series of movements of the folding plate 26 from the retracted position to the working position.

Further, the filament adhesive J drawn out from the supply nozzle 24 disposed above the anvil 21 passes through the through hole 23b formed in the working part 23, and the tip thereof is placed on the side of the working part 23. It is projected to.
The thread-like adhesive J is formed by solidifying an adhesive specifically for cloth into a thread-like form.

FIG. 1 is a diagram showing the configuration of an adhesive supply mechanism for feeding out the thread-like adhesive J. A base end portion of an actuating member 32 is rotatably supported by a portion of the machine frame 31 of the edge bending head 11 via a support shaft 31a. This actuating member 32 has an adhesive supply device 33.
is attached, and a treatment supply nozzle 24 is attached to the lower side of the supply device 33. Further, a bobbin 34 around which a predetermined amount of thread-like adhesive J is wound is rotatably supported on the upper part of the machine frame 31. One end of the filamentous adhesive J wound around the bobbin 34 passes through the adhesive supply device 33 and is led out from the tip of the supply nozzle 24, as shown in FIG.

Also, in order to rotate the operating member 32, the machine frame 3
1 is provided with a rotatable actuating member drive cam 40, and a cam follower 41 that engages with the cam 40 and is actuated is rotatably attached via a support shaft 42. The tip of the arm portion 41a of this cam follower 41 is connected to the actuating member 32. and,
When the actuating member drive cam 40 is rotated, the cam follower 41 is actuated and the arm portion 41 is actuated.
The actuating member 32 is reciprocated in the vertical direction by a,
A supply nozzle 24 attached to an adhesive supply device 33 is reciprocated along one side edge 21a of the anvil 21. This operation is performed to stretch and cut the thread-like adhesive J, and by the movement of the supply nozzle 24, it is drawn out from the supply nozzle 24 and placed at a predetermined position at the tip of the thread-like adhesive J melt-bonded to the cloth. The tension is applied and the cutting is performed. The actuating member drive cam 40, the cam follower 41, the supply nozzle 24, etc. constitute a cutting means.

Further, as shown in FIG. 2, the adhesive supply device 33 has a hollow part 33a inside, and the hollow part 33a includes:
A cylindrical piston 35 is slidably assembled. This piston 35 and the small diameter part 3 of the hollow part 33a
3b, a compression spring 36 is interposed. Further, the tip of the piston 35 is coated with a thread-like adhesive J.
A well-known collector chuck 37 for gripping is attached, and an annular sleeve 38 is fitted to the tip of the chuck 37. This sleeve 3
8 indicates the lower end surface of the small diameter portion 33b and the small diameter portion 33b.
Movement is restricted between the step part 33c formed below.

The filamentous adhesive J introduced into the hollow portion 33a passes through the piston 35 and the collect chuck 37, and is led out through the supply nozzle 24. Further, an air hole 33d is formed on the base end side of the adhesive supply device 33, through which compressed air is introduced in order to press and move the piston 35. An air connector 39 is connected to this air hole 33d as shown in FIG. 1, and compressed air is supplied from an air compressor (not shown) via an adhesive supply control solenoid valve 43.

Then, the bent edge Wa is formed by the bobbin 34, the adhesive supply device 33, the supply nozzle 24, etc.
In order to bend and fix the folded portion, an adhesive supply means is configured to supply thread-like adhesive J between the folded portions of the fabric.

Therefore, by introducing compressed air into the hollow portion 33a, the piston 35 is pressed downward against the spring force of the compression spring 36, as shown by the two-dot chain line in FIG. Collection check 37
is pressed downward while holding the filamentous adhesive J. At this time, the movement of the sleeve 38 is restricted by the stepped portion 33c, and only further movement of the collect chuck 37 is allowed, the tip thereof opens, and the grip of the thread-like adhesive J by the collect chuck 37 is temporarily released. Thereafter, the introduction of compressed air is stopped and the compressed air in the hollow portion 33a is discharged, so that the piston 35, the collection chuck 37, and the sleeve 38 return to the positions shown by solid lines in FIG. It is gripped again by the collection chuck 37. By repeating this cycle, the filamentous adhesive J is supplied in predetermined amounts.

Further, above the anvil 21, an output horn 29 of the ultrasonic transducer main body 28 is arranged to be movable up and down. That is, the ultrasonic transducer main body 28 is drivingly connected to a main body drive cam (not shown), and the output horn 29 is activated by the fifth, sixth,
As shown in FIGS. 8 and 9, there is a retracted position away from the anvil 21, and as shown in FIG. It moves up and down in between.

As is well known, the ultrasonic transducer main body 28 in this embodiment is composed of a high frequency oscillator, a resonant type vibrator that converts the vibration into ultrasonic vibration, and an output horn 29 that transmits the ultrasonic vibration while amplifying it. has been done. The high frequency oscillator and the resonant type transducer are built into the ultrasonic transducer main body 28, and the main body 2
An output horn 29 projects downward from the output horn 8 .
Then, when this output horn 29 is moved from the retracted position to the operating position, the edge immediately after being bent
Wa is brought into contact with the work cloth W to press the bent part, and the high-frequency oscillator oscillates in this contact state, causing the cloth and the thread-like adhesive J at the contact part to generate heat, and the thread-like adhesive J At the same time, a crease is formed in the work cloth W by the ironing effect.

In addition, this ultrasonic transducer main body 28 and anvil 2
1 constitutes a heating means.

Also, as shown in Figures 1, 5 to 10, anvil 2
1, the tip of a blow-off nozzle 30 for blowing out air as a cooling means is arranged facing downward. This blowout nozzle 30 is provided to quickly cool the filamentous adhesive J melted by the heating of the output horn 29, and the air drawn out from the air compressor (not shown) is supplied to the air blowing control solenoid valve 4.
It is blown out through 4.

Further, above the anvil 21, there is a blowout nozzle 3.
Edges bent in synchronization with air blowing from 0
A holding plate 16 for auxiliary pressing and holding of Wa is arranged to be movable up and down.

As shown in FIG. 10, the holding plate 16
The support shaft 18a is attached to the bracket 17 attached to the
It is attached to the tip of an actuating piece 18 that is rotatably supported around . An output shaft 19a of a retaining plate actuator 19 attached to the bracket 17 is connected to the intermediate portion of the actuating piece 18.
When the retaining plate actuator 19 is operated, its output shaft 19a is moved upward, whereby the operating piece 18 is rotated upward and the retaining plate 16 is placed in a retracted position away from the anvil 21. or,
By moving the output shaft 19a downward, the actuating piece 1
8 is rotated downward and the holding plate 16 is moved to the anvil 21.
The work cloth W is disposed in an operating position close to the workpiece cloth W. In this operating position, a certain amount of clearance is formed between the retainer plate 16 and the reference support plate S of the anvil 21.

Next, the operation of the edge folding device configured as described above will be explained.

FIG. 5 is a diagram showing an initial state in which the work cloth W held by the cloth clamp 13 is set on the edge bending head 11. In this state, the presser member 25, the folding guide 22, the output horn 29, and the holding plate 16 are each placed at a retracted position away from the anvil 21 upward. Also, the folded plate 26 is an anvil 21
The tip of the supply nozzle 24 is located close to the folding guide 22. Further, the ultrasonic vibration by the high frequency oscillator of the ultrasonic vibrator main body 28, the air blowing from the blowing nozzle 30, and the feeding of the edge bending head 11 by the motors 5, 9, 10, etc. are all stopped.

From this state, as shown in FIG.
5 and the folding guide 22 are moved down and placed in the working position, the work cloth W is pressed and held between the reference support surface S of the anvil 21. Then, when the folded plate 26 is moved through the notch recess 21b of the anvil 21 and placed in the working position where it substantially overlaps the upper surface of the working part 23, the edge Wa of the work cloth W is pushed up from below by the folded plate 26. , a part of which is guided by the tip edge 23a of the action portion 23 while the folding is performed.
As a result, the action portion 23 is sandwiched together with the thread-like adhesive J between the folded edges Wa.

Next, when the high-frequency oscillator is activated to start ultrasonic vibration and the ultrasonic vibrator main body 28 is moved downward, the lower end of the output horn 29 touches the previously folded edge Wa, as shown in FIG. It is moved down to the working position where it abuts.

When the ultrasonic vibration is continued in this contact state, the output horn 29 and the already folded edge Wa come into contact with each other, and the cloth and thread-like adhesive J in the contact portion generate heat. As a result, the thread-like adhesive J is melted and the folded portion can be bonded, and a crease can be formed in the folded portion due to the ironing effect.

After that, when the air blowout control solenoid valve 44 is opened and air is blown out from the blowout nozzle 30, the filamentous adhesive J that was melted just before and spread over the folded part is cooled down, and the glued part is quickly bonded. It can be done reliably. Further, around this time, the actuating member 32 is rotated based on the rotation of the actuating member drive cam 40.
When the supply nozzle 24 is rotated upward, the supply nozzle 24 is moved in a direction away from the folding guide 22, and the tip of the filamentous adhesive J heated and melted by the output horn 29 is pulled and cut.

Then, when the output horn 29 is moved upward, the melting of the filamentous adhesive J is completed, and the formation of a crease in the folded portion is completed.

Subsequently, the folded plate 26 is returned to the retracted position below the anvil 21 from the working position overlapping the working part 23, and the retaining plate actuator 1 is placed before and after this.
9 is operated, the holding plate 16 is placed in an operating position where it substantially overlaps the operating portion 23 via the folded edge Wa. As a result, the folded edge Wa is held by the holding plate 16 instead of the folded plate 26. That is, the return of the folded edge Wa is regulated by the holding plate 16.

Then, while the holding plate 16 is holding the folded portion, when the pressing member 25 and the folding guide 22 are each slightly moved upward to release the pressure on the work cloth W, the edge folding head 11 becomes ready to be fed. . That is, the edge Wa folded this time is held only by the holding plate 16, and an appropriate gap is formed between the work cloth W and the anvil 21, and the work cloth W and each member 16, 21 to 23, 25 etc. is permitted.

Therefore, when each motor 5, 9, 10 is controlled to move the edge bending head 11 along the edge Wa in this relative movement allowed state, the eighth
As shown in the figure, each member 16, 21 to 26, 29, etc. is moved along the edge Wa of the work cloth W, and each member 16, 21 to 26, 29, etc. is moved to a position corresponding to the next folding area. be done.

Further, in order to supply the filamentous adhesive J in synchronization with the movement of the edge bending head 11, the adhesive supply control solenoid valve 43 is opened and the adhesive supply device 3 is opened.
3, a new filamentous adhesive J to be used next is led out to the side of the action section 23 via the supply nozzle 24.

After that, when the retaining plate actuator 19 is activated and the retaining plate 16 is moved to the upper retracted position, this series of bending operations is completed and the initial state for moving on to the next bending operation is established. Become.

As described above, a series of bending operations of the edge Wa can be performed.

As mentioned above, in this embodiment, each member 16, 2
1 to 23, 26, etc., a thread-like adhesive J is supplied between the folded parts of the edge Wa, and the supplied thread-like adhesive J is applied to the output horn 29 of the ultrasonic transducer main body 28. Since it is heated and melted by contact, the folded edges are glued between the folded parts.
Wa can be fixed. As a result, the folded state can be stably fixed without being affected by the type of fabric, such as less flexible fabric or thicker fabric, or the degree of folding.

Further, in this embodiment, the filamentous adhesive J immediately after being heated and melted by the contact of the output horn 29 is cooled by air blowing from the blowing nozzle 30, and the folded edge Wa is quickly and reliably bonded. Therefore, a series of bending operations can be performed quickly, and the operating time can be shortened.

Further, in this embodiment, the edge bending head 11 is moved relative to the cloth clamp 13, whereby each of the edge bending members 16, 22 to 26, 29, etc. is moved along. For this reason, when the width of the work cloth W is large and the folding length is long, when the work cloth W is flexible, or when folding the edge Wa of a curved shape, etc., there is no force applied to the edge Wa of the work cloth W. Smooth folding can be performed without causing excessive tension or twisting. Therefore, a desired folding shape can be easily obtained as an apparatus for automating folding.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and may be implemented as follows by changing a part of the structure as appropriate without departing from the spirit of the invention.

(1) In the embodiment described above, one blow-off nozzle 30 was provided as the cooling means, but a plurality of blow-off nozzles may be provided and the air blow-out timings thereof may be adjusted appropriately.

(2) In the above embodiment, the holding plate 16 and the holding member 25
are provided, but these may be omitted.

(3) In the above embodiment, each member 22 to 26, 29 is controlled by various drive cams such as a folding guide drive cam, a presser member drive cam, a folding plate drive cam, a main body drive cam, and an operating member drive cam 40. , 32, etc., but these members 2
2 to 26, 29, 32, etc. may be configured to be operated by a dedicated actuator.

[Effects of the Invention] As described in detail above, since the present invention is constructed, the folded portion of the work cloth that has been folded by the folding guide and the folding plate is prevented from returning to its original state. The thread-like adhesive used to fix the folded portion has no adhesive effect at room temperature, but exhibits its adhesive effect when heated. It can be easily supplied to the cloth feeding side, and it can also be reliably supplied between the folded parts when folding the processed cloth, making it easy to handle the adhesive for fixing the cloth, and the mechanism for doing so is simple. Can be done. Also,
The folded part of the work cloth, which is folded with thread-like adhesive in between, is pressed by the output horn of the ultrasonic vibrator to ensure that a crease is formed, and it is instantaneously heated by the ultrasonic vibrations, so it can be processed in a short time. It becomes possible to fix the folded part of the cloth.

Since the folding guide and the folding plate can be made compact in this way, the folding head can be finely moved along the outer periphery of the work cloth held by the cloth holding means to form not only linear but also curved folds on the outer periphery. Lines can be formed. Furthermore, the thread-like adhesive is supplied between the folded parts of the work cloth by the thread-like adhesive supplying means, and is heated by the ultrasonic vibrator to bond the folded parts. Since it is cut from the work cloth by the cutting means before it is moved, the amount of thread-like adhesive supplied can be made smaller than the amount of movement of the folding head at one time, and the folding cost can be reduced.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing the configuration of an adhesive supply mechanism, etc., showing an embodiment embodying the present invention;
FIG. 2 is a partially cutaway front view of the adhesive supply device, FIG. 3 is a perspective view showing the schematic configuration of the edge folding device, and FIG. 4 is a partially cutaway plan view showing the state in which the work cloth is set.
5 to 8 are partially cutaway perspective views showing the structure of the edge bending mechanism and its series of operations, FIG. 9 is a partially cutaway side view showing the structure of the edge bending mechanism, and FIG. 10 is a retaining plate. FIG. 3 is a partially cutaway perspective view showing a configuration for vertically moving the device. 21... Anvil, 22... Folding guide, 26...
... Folded plate, 28 ... Ultrasonic transducer main body, 29 ... Output horn, 24 ... Supply nozzle, 33 ... Adhesive supply device, 34 ... Bobbin, 30 ... Blowout nozzle as cooling means, W ... ...Processed cloth, Wa...Edge.

Claims (1)

[Scope of Claims] 1. A folding head that bends a part of the outer peripheral edge of the work cloth held by the cloth holding means; and after folding the part of the outer peripheral edge of the work cloth, and a folding head feeding means for relatively moving the folding head along the outer peripheral edge of the work cloth to the next folding position, and the folding of the work cloth by the folding head and the movement of the folding head are repeated. In the work cloth edge folding device configured as above, a notch is formed in the folding head, and an outer peripheral edge of the work cloth held by the cloth holding means is placed to cover the notch. a folding guide that has an action part that can press the work cloth at a position adjacent to the cutout and is arranged to be movable up and down; and a thread-shaped folding guide that exhibits adhesive properties when heated. a filamentous adhesive supplying means for supplying a predetermined amount of adhesive to the processed cloth sending side of the folding guide through a guide formed in the working portion of the folding guide; It is arranged to be movable between a folding position overlapping the upper surface of the working part of the folding guide that presses the fabric, and the outer peripheral edge of the work cloth is held in place by sandwiching the supplied filamentous adhesive between the folding position and the working part of the folding guide. a folding plate that is bent upward; and a folding plate that is disposed on the feed-out side of the work cloth from the folding guide, and a folded portion of the work cloth that is folded with the thread-like adhesive sandwiched between the folding guide and the folding plate. an ultrasonic vibrator that presses and applies ultrasonic vibration; and after the ultrasonic vibrator adheres the folded portion of the work cloth and before the folding head is moved by the folding head feeding means, processing is carried out. What is claimed is: 1. A device for folding edges of a processed cloth, comprising: cutting means for cutting thread-like adhesive connected to the cloth.