JPH02161987A - Edge folding device for worked fabric - Google Patents

Abstract

PURPOSE:To fix a folding part and to stabilize the part by providing a heating means to heat and melt an adhesive between the fabric of the folding part. CONSTITUTION:When a pressing member 25 and a folding guide 22 are moved down and arranged to an operating position, worked fabric W is pressed and held in an interval with a reference supporting surface S of an anvil 21. When a high frequency oscillator is operated, ultrasonic oscillation is started and an ultrasonic oscillator main body 28 is moved down, the lower edge of an output horn 29 is moved down to the operating position to be abutted with an edge part Wa which is folded just before the move. In such an abutting condition, when the ultrasonic oscillation is continued, the fabric of the abutted part and a thread-shaped adhesive J are heated by abutting between the output horn 29 and the edge part Wa which is already folded. Thus, the thread-shaped adhesive J is melded and the folding part can be adhered. Then, a fold can be formed in the folding part by an iron effect.

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, Japanese Patent Publication No. 63-511
The one disclosed in Publication No. 5 is known. This device alternately repeats the folding of the edge of the work cloth by the cooperation of the guide member and the operating member and the feeding of the work cloth by the feed foot.
The edges of the work cloth are folded one after another and the work cloth is transported along the fold line.

[Problems to be Solved by the Invention] However, in the conventional device, the edges of the work cloth are only folded in by the guide member and the actuating member;
No measures were taken to fix the folding. For this reason, 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.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a work cloth edge folding device that can fix and stabilize the folded portion.

[Means for Solving the Problems] In order to achieve the above object, in the present invention, in a work cloth edge folding device equipped with a folding means for folding an edge of a work cloth, In order to bend and fix the edge folded portion bent by the means, an adhesive supplying means for supplying adhesive between the fabrics of the folded portion, and heating the adhesive between the fabrics of the folded portion. Heating means for melting is provided.

[Operation] Therefore, after the edges of the work cloth are bent by the bending means,
By activating the adhesive supply means, adhesive is supplied between the fabrics of the folded portion in order to fix the folded edge folded portion. Thereafter, by activating the heating means, the adhesive is heated and melted and spread between the fabrics at the folded portions, thereby adhering the folded portions.

[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. On the base 1, a transport board 3 is supported so as to be able to reciprocate on a pair of guide rails 2 extending in parallel along the Y direction.

Further, a male threaded rod 4 extending parallel to both guide rails 2 is rotatably arranged on the base 1, and a part of the rod 4 is screwed into a female threaded part (not shown) provided on the lower side of the transport board 3. are combined.

Also, one end of the male threaded rod 4 is attached to a Y attached to the base 1.
It is drivingly connected to a motor 5 for directional conveyance.

Then, the male threaded rod 4 is rotated in forward and reverse directions based on the drive of the Y-direction transport motor 5, so that the transport board 3 is reciprocated in the Y direction on the guide rail 2.

On the conveyor board 3, extending orthogonally to the guide rail 2,
That is, the transport block 7 is supported so as to be reciprocating through a pair of guide rods 6 extending in the X direction orthogonal to the Y direction. A male threaded rod 8 extending parallel to the guide rod 6 is rotatably disposed between the two guide rods 6.
is screwed onto the transport 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. Then, 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 in the X direction on the guide rod 6.

A motor 10 for rotation in the θ direction is fixed on the conveyance block 7 . On this θ direction rotation morph 10,
An edge bending end 11 is fixed via a base plate 12, and is made of a machine frame 31 that includes an edge bending mechanism operated to bend a predetermined area of the edge Wa of the work cloth W.

The motor 10 for rotation in the θ direction is a well-known high-performance DD motor without a speed reduction mechanism, and the base 12 is fixed to an output part that can rotate in the θ direction.

Then, by driving the θ-direction rotation motor 1o, the edge curved head 11 is rotated together with the base 12 in the θ-direction.

Therefore, the movement of the conveyor board 3 or the conveyor block 7, the movement of the base 12
Based on the zero rotation, the edge curved head 11 is moved in the Y direction or the X direction and rotated in the θ direction.

On the other hand, a cloth clamp 13 for holding the work cloth W is disposed near the base 1. This cloth clamp 1
3 is composed of a lower plate 13a 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. Moreover, the upper plate 13b has its base end shaft support 13
It is attached to the lower plate 13a at a point c such that it can rotate upwardly, and is crimped to the lower plate 13a by a biasing member (not shown).

To hold the work cloth W in the cloth clamp 13, the upper plate 13b is rotated upward, and both plates 13a are rotated upward.

The work cloth W is held between the parts 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 bending head 11. In this set state, the cloth clamp 13 is fixed at the same position,
Only the edge bending head 11 is moved along the edge Wa of the work cloth W.

Next, the edge bending mechanism etc. assembled to 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 includes a plate-shaped frame 21 fixed to receive the edge Wa of the workpiece cloth W held by the cloth clamp 13, the upper surface of which is attached to the workpiece cloth W. It serves as a reference support surface S on which the edge Wa of W is placed. Furthermore, a cutout recess 21b is formed on one side 8!21a of the anvil 21.

Above the anvil 21, a folding guide 22 made of a thin plate and having an oval-shaped cross section is arranged 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. In addition, the tip of this folding guide 22 is connected to the anvil 21 so that the work cloth W
The tip edge 23a of the acting part 23 holds the
acts as a guide to form a crease when folding the edge Wa.

A notch 22a is formed in the folding guide 22 and continues upward from a part of the action part 23, and a presser member 25 having a cross-section shape is disposed so as to be movable up and down corresponding to the notch 22a. . This presser member 25 is drivingly connected to a presser member drive cam (not shown), and is moved up and down based on the operation of the drive cam. Then, the tip of this presser member 25 is connected to the notch 2.
The movement of the work cloth W is regulated by auxiliary pressing of a part of the work cloth W via 2a.

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, the tip of the folded plate 26 moves upward from the retracted position below the anvil 21 shown by the solid line in FIGS. Folding guide 22 shown by the two-dot chain line in Fig. 9
It is moved to an operating position overlapping the upper surface of the operating portion 23, and then returned to the retracted position shown by the solid line in FIGS. 8 and 9 following a substantially reverse path to that described above.

Then, the edge W of the workpiece cloth W held by the cloth clamp 13 by the anvil 21, the folding guide 22, the folding plate 26, etc.
A folding means is configured to fold a predetermined region of a, and the edge Wa of the work cloth W held under pressure between the anvil 21, the folding guide 22, and the presser member 25 is at the retracted position of the folding plate 26. folded in by a series of movements from to the working position.

Further, the filamentous adhesive J drawn out from the supply nozzle 24 arranged above the anvil 21 passes through the through hole 23b formed in the working part 23, and the tip thereof is inserted into the working part 23.
It is projected laterally.

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-curved head 11 via a support shaft 31a. An adhesive supply device 33 is attached to the operating member 32, and the supply nozzle 24 is attached to the lower side of the adhesive supply device 33. Also, machine frame 3
1, a bobbin 34 having a predetermined amount of thread-like adhesive J wound thereon is rotatably supported. 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.

Further, in order to rotate the operating member 32, a rotatable operating member drive cam 40 is provided on the machine frame 31.
A cam follower 41 that is activated by engaging Q is rotatably mounted via a support shaft 42. The tip of the arm portion 41a of this cam follower 41 is connected to the actuating member 32. When the actuating member drive cam 40 is rotated, the cam follower 41 is actuated and the arm portion 41a thereof is actuated.
As a result, the actuating member 32 is reciprocated in the vertical direction, and the supply nozzle 24 attached to the adhesive supply device 33 is reciprocated along one side edge 21a of the anvil 21.

This operation is performed to pull and cut the thread-like adhesive J, and as the supply nozzle 24 moves, the thread-like adhesive J drawn out from the supply nozzle 24 and melted and bonded to the cloth is removed.
A predetermined tension is applied to the tip of the blade to perform the cutting.

Further, as shown in FIG. 2, the adhesive supply device 33 has a hollow portion 33a inside, and a cylindrical piston 35 is slidably assembled in the hollow portion 33a. This piston 35
A compression spring 3 is provided between the small diameter portion 33b of the hollow portion 33a and
6 is interposed.

Further, a well-known collet chuck 37 for gripping the filamentous adhesive J is attached to the tip of the piston 35, and an annular sleeve 38 is fitted to the tip of the chuck 37. The movement of the sleeve 38 is restricted between the lower end surface of the small diameter portion 33b and a stepped portion 33c formed below the small diameter portion 33b.

The filamentous adhesive J introduced into the hollow portion 33a passes through the piston 35 and the collet chuck 37, and is led out through the supply nozzle 24. or,
An air hole 33d through which compressed air is introduced in order to press and move the piston 35 is formed on the base end side of the adhesive supply device 330. An air connector 39 is connected to this air hole 33d as shown in FIG. 1, and compressed air is supplied from a near compressor (not shown) via an adhesive supply control solenoid valve 43.

Then, using the bobbin 34, the adhesive supply device 33, the supply nozzle 24, etc., a thread-like adhesive J is applied between the fabrics of the folded edge Wa in order to bend and fix the folded edge Wa.
An adhesive supply means is configured to supply the adhesive.

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. The chuck 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 collet chuck 37 is allowed, the tip thereof opens, and the grip of the filamentous adhesive J by the collet chuck 37 is temporarily released. Thereafter, the introduction of compressed air is stopped and the compressed air in the hollow part 33a is discharged, so that the piston 35 and the collet chuck 37
and the sleeve 38 returns to the position shown by the solid line in FIG.
The thread-like adhesive J is gripped by the collet chuck 37 again. By repeating this cycle, thread-like adhesive J
is supplied in predetermined amounts.

Further, above the anvil 21, an ultrasonic transducer body 28 is provided.
An output horn 29 is arranged to be movable up and down. That is, the ultrasonic transducer main body 28 is drivingly connected to a main body driving cam (not shown), and based on the operation of the driving cam, the output horn 29 moves toward the anvil 21 as shown in FIGS.
It is moved up and down between a retracted position where it is away from the folding guide 22 and the folding plate 26, and an operating position where it is close to the anvil 21 via the work cloth W on the sides of the folding guide 22 and the folding plate 26, as shown in FIG.

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 vibrator are housed in the ultrasonic vibrator main body 28, and an output horn 29 projects downward from the main body 28.

When the output horn 29 is moved from the retracted position to the operating position, it comes into contact with the work cloth W in order to press the bent part of the edge Wa immediately after being bent, and in this contact state, When the high-frequency oscillator oscillates, the cloth and thread-like adhesive J at the contact portion generate heat, and the thread-like adhesive J is melted and bonded, and the work cloth W is heated by the ironing effect.
A crease is formed.

Incidentally, the ultrasonic transducer main body 28 and the anvil 21 constitute a heating means.

Further, as shown in FIGS. 1 and 5 to 10, above the anvil 21, the tip of a blow-off nozzle 30 for blowing out air for cooling is arranged downward.

This blow-off nozzle 30 is provided to quickly cool the filamentous adhesive J melted by the heating of the output horn 29, and air drawn from a near compressor (not shown) is blown out via an air blow-out control solenoid valve 44. be done.

Further, above the anvil 21, a holding plate 16 is arranged to be movable up and down in synchronization with the air blowing from the blowing nozzle 30, for auxiliary pressing and holding of the bent edge Wa. .

As shown in FIG. 10, the holding plate 16 is attached to the tip of an actuating piece 18 that is supported by a bracket 17 attached to the machine frame 31 so as to be rotatable about a support shaft 18a. An output shaft 19a of a retaining plate actuator 19 attached to the bracket 17 is connected to an intermediate portion of the actuating piece 18. Based on the operation of the retaining plate actuator 19, 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. Further, by moving the output shaft 19a downward, the actuating piece 18 is rotated downward, and the holding plate 16 is placed in the operating position close to the anvil 21 to hold the work cloth W.

In this operating position, a certain amount of clearance is formed between the retaining plate 16 and the reference support surface 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. Further, the folding plate 26 is arranged at a retracted position away from the anvil 21 below, and the tip of the supply nozzle 24 is arranged at a position close to the folding guide 22. Furthermore, 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, when the presser member 25 and the folding guide 22 are moved downward and placed in the working position as shown in FIG. 6, the work cloth W is pressed and held between the reference support surface S of the anvil 21. . Then, the folded plate 26 is connected to the notch recess 21 of the anvil 21.
When the workpiece cloth W is moved to the working position substantially overlapping with 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, and a part of the edge Wa of the work cloth W is pushed up from below by the folded plate 26. Folding is performed while being guided by 23a.

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 folded part can be bonded quickly and reliably. can be done. Furthermore, when the operating member 32 is rotated upward based on 400 rotations of the operating member drive cam before and after this, the supply nozzle 24 is moved in a direction away from the folding guide 22, and the supply nozzle 24 is heated and melted by the output horn 29. The tip of the thread-like adhesive J is pulled and cut.

Then, when the output horn 29 is moved upward, the thread-like adhesive J
At the same time as the melting of the folded portion is completed, the formation of creases in the folded portion is completed.

Subsequently, the folded plate 26 is returned to the retracted position below the anvil 21 from the operating position overlapping the operating portion 23, and the retaining plate actuator 19 is operated before and after this, and the retaining plate 16 is folded into the edge. It is arranged at a working position that substantially overlaps the working part 23 via the part Wa. As a result, the folded edge Wa is held by the holding plate 16 instead of the folded plate 26. That is, the holding plate 16 restricts the return of the folded edge Wa.

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 bending head 11 becomes ready to be fed. . That is, the edge Wa folded in 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 16.21-23. 25 etc. is permitted.

Therefore, in this relative movement allowed state, in order to move the edge bending head 11 along the edge Wa, each motor 5,
9.10 is driven and controlled, each member 16.21 to 26.29, etc. is moved along the edge Wa of the work cloth W, as shown in FIG. Moved to the position corresponding to the next folding area.

Furthermore, in order to supply the filamentous adhesive J in synchronization with the movement of the edge curved head 11, an adhesive supply control solenoid valve 43 is provided.
When the adhesive supply device 33 is activated by opening the , 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 16.21-23
．． A thread-like adhesive J is supplied between the fabrics at the folded portion of the edge Wa which is bent by 26 etc., and the supplied thread-like adhesive J
is heated and melted by contact with the output horn 29 of the ultrasonic transducer main body 28, so that the folded edge Wa can be fixed by adhering the fabric between the folded portions. As a result,
It is cooled by air blowing from the zipper 30, which is not affected by the type of fabric such as less flexible fabric or heavy fabric, or the degree of folding, and the folded edges Wa are quickly and reliably bonded. Therefore, a series of bending operations can be performed quickly, and the working time can be shortened.

In addition, in this embodiment, the edge bending pad 11 is connected to the cloth clamp 1.
3, and thereby the edge bending members 16.22 to 26.29, etc. are moved along the edge Wa of the work cloth W. Therefore, 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 a curved edge Wa, 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.

Note that this invention is not limited to the above embodiments,
The present invention can 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, the filamentous adhesive J is supplied between the fabrics at the folded portions, but a powdered adhesive may also be supplied.

(2) In the above embodiment, the output horn 29 is used as a heating means.
Although the ultrasonic transducer main body 28 is provided, a contact member heated by a heater may be provided as a heating means and may be configured to contact the work cloth W.

(3) In the embodiment described above, the holding plate 16, the pressing member 25, and the blowing nozzle 30 are provided, but these may be omitted.

(4) In the above embodiment, each member 22 is operated 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.
It was configured to operate ~26, 29, 32, etc.
Each of these members 22 to 26, 29, 32, etc. may be configured to be operated by a dedicated actuator.

[Effects of the Invention] As described in detail above, according to the present invention, the folded edge portion can be fixed and the folded state can be fixed, which is an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing the configuration of an adhesive supply mechanism showing an embodiment of the present invention, FIG. 2 is a partially cutaway front view of the adhesive supply device, and FIG. 3 is a partially cutaway front view of the adhesive supply device. FIG. 4 is a partially cutaway plan view showing the state in which the work cloth is set; FIGS. 5 to 8 are partially cutaway perspective views showing the structure of the edge bending mechanism and its series of operations. Similarly, FIG. 9 is a partially cutaway side view showing the structure of the edge bending mechanism, and FIG. 10 is a partially cutaway perspective view showing the structure for vertically moving the holding plate. 21...Anvil, 22...Folding guide, 26...
Folded plate (21, 22, 26 etc. constitute a bending means), 28... Ultrasonic vibrator main body (21, 28 constitute a heating means), 29... Output horn , 24... supply nozzle, 33... adhesive supply device,
34...Bobbin (24, 33, 34, etc. constitute adhesive/adhesive supply means), W...processed cloth, Wa...
...Edge.

Claims (1)

[Scope of Claims] 1. A work cloth edge folding device comprising folding means (21, 22, 26, etc.) for folding an edge (Wa) of a work cloth (W), comprising: Adhesive supply for supplying adhesive (J) between the fabrics of the folded portions of the edge (Wa) bent by the means (21, 22, 26, etc.) in order to bend and fix the folded portions. A work cloth characterized in that it is provided with means (24, 33, 34, etc.) and heating means (21, 28) for heating and melting the adhesive (J) between the folded portions of the cloth. edge folding device.