JPH0227469B2 - JETSUTORYUNYORUNUNONOHOGOSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides an apparatus for stitching cloth using a jet flow of a high-pressure liquid or a gas-liquid mixed fluid.
This invention relates to a mechanism for stably performing suturing using jet flow.

[Prior art] In order to reduce the operation of the manipulator required for material handling of cut fabrics and parts, automatic sewing systems have a simplified mechanism and are also capable of sewing along curves and curved surfaces. It is desired to develop a provisional suturing mechanism that can adequately handle this problem.

To address this problem, the present inventors have investigated a method for sewing cloth using a jet flow, with the aim of developing a simplified suturing mechanism suitable for operations such as temporary suturing. , the results were published in JP-A-Sho.
It was disclosed in Japanese Patent Application No. 60-259669, etc., and proposed in Japanese Patent Application No. 165668-1983 (filed on July 1, 1988).

In particular, the suturing device proposed in the above-mentioned Japanese Patent Application No. 165668/1983 has a configuration as shown in Fig. 2, and can prevent leakage of the cloth to be sutured as much as possible and obtain high suture strength. It is effective in that it can be done.

That is, as shown in FIG. 2, this suturing device holds a plurality of cloths 1a and 1b to be sutured in a stacked state, and applies high pressure through a high-pressure pipe 2 above and below these cloths 1a and 1b. Cloth 1a,
The nozzles 3 and 3 are disposed facing each other so as to inject at the same position from both the front and back sides of the nozzle 1b, and the peripheral parts of these nozzles 3 and 3 are used as a suction discharge device for suctioning and discharging the liquid scattered by the suction pipe 5. It is covered with a cover 4 that communicates.

According to this suturing device, it has been confirmed that a suturing effect equivalent to temporary suturing and lock stitching can be obtained while preventing the cloth to be sutured from getting wet as much as possible. In some cases, the liquid that has been scattered through the
It was found that due to the suction, the laminated cloths 1a and 1b were vertically separated, resulting in incomplete stitching. In particular, as shown in Figure 2, taking into account that the thickness of the laminated cloth may be relatively thick, if a large gap is provided between the upper and lower covers 4, this tendency will be greatly reduced. It is.

In order to deal with such problems, conventional methods have been to adjust the distance between the upper and lower nozzles 3, 3 depending on the thickness of the fabrics to be laminated, or to adjust the distance between the upper and lower nozzles 3, 3, depending on the thickness of the fabrics to be laminated.
It caused a strong tension that could not be defeated by the suction inside, but
There have been problems such as the operation is complicated.

[Problems to be Solved by the Invention] A technical problem to be solved by the present invention is that, in an apparatus for stitching fabrics using a jet flow, when sucking and discharging liquid scattered through the cover from both the front and back sides of laminated fabrics, To provide a suturing device which prevents laminated cloth from being separated vertically due to its suction force, and at the same time copes with changes in the thickness of the laminated cloth and performs stable suturing.

[Means for Solving the Problems] In order to solve the above problems, the present invention injects a high-pressure jet stream from a nozzle to a plurality of laminated cloths, thereby sewing the laminated cloths together. In this cloth suturing device, the nozzles are arranged so as to spray the liquid at the same position from both the front and back sides of the laminated cloth, and the periphery of these nozzles is used as a suction discharge device for suctioning and discharging the scattered liquid. The cloth is covered with a communicating cover, and one of the covers is provided with a pressure plate that pinches the laminated cloth between the cover and the other cover using an elastic body.

[Function] When cloth having suture fibers is laminated and a high-pressure jet stream is injected from the nozzles on both the front and back surfaces, the jet stream acts on the suture fibers from the front and back of the fabric, destroying those fibers. The laminated fabrics are sewn together or intertwined with each other. In this case, the jet flow that collides with the surface of the cloth is scattered there, and the upper and lower jet flows that have penetrated deeply into the cloth collide with each other at high speed and are scattered around the nozzle with force. It is discharged from inside the cover to the outside through a suction and discharge device.

This suction inside the cover may cause the laminated cloth to be separated vertically, but one of the covers is equipped with a pressure plate that pinches the laminated cloth between it and the other cover using an elastic body. This prevents the laminated cloth from separating. Further, by using this pressure plate, the distance between the covers can be adjusted to correspond to changes in the thickness of the laminated cloth, and stable stitching can be performed.

[Example] FIG. 1 shows an example of a suturing device according to the present invention.

This suturing device has a plurality of cloths 1a to be sutured,
1b are laminated and sewn together using a high-pressure jet flow.A thin jet flow of high-pressure liquid or gas-liquid mixed fluid is applied to the laminated fabrics 1a and 1b from both the front and back surfaces of the laminated fabrics 1a and 1b. A pair of upper and lower jet flow injection means 12, 13 that inject as
is maintained. These jet flow injection means 12, 13 are equipped with a nozzle 16 connected to a high pressure generating device (not shown) via a high pressure pipe 15, and a pair of upper and lower nozzles 16, 16 are connected to a layered cloth 1a, 1b.
They are arranged facing each other so that they are sprayed at the same position from both the front and back sides. Also, those nozzles 1
The surrounding areas of 6 and 16 are covered with a cover 18 which is communicated with a suction and discharge device (not shown) through a suction pipe 17. These covers 18, 18 have openings 19 in the jetting portions of the jets, in order to cause the jets jetted from the opposed nozzles 16, 16 to act on the cloth.

The cover 18 of the upper jet stream injection means 12 has a cup shape covering the lower end portion thereof, and the surrounding cylindrical portion 21 is attached to the cover 18.
8 is provided with a clamping plate 20 slidably fitted on the outside, and this clamping plate 20 also has an opening 2 at the jet flow jetting portion, similar to the opening 19 provided in the cover 18.
2 are provided. Further, between the pressure plate 20 and the lower cover 18, an elastic body 24 is housed for pinching the laminated cloths 1a and 1b.

The clamping plate 20 is made of a material that has a smooth surface and is corrosion resistant to jet liquid, such as plastic or the like, in order to smoothly operate the cloth clamped between it and the lower cover 18. It is made of stainless steel or the like. Further, as the elastic body 24, an elastic member such as a sponge, rubber, or spring can be used.

In the suturing device having the above configuration, the cloths 1a, 1 having suturing fibers are
b is held in a stacked state, and a nozzle 16,
When a high-pressure jet stream is injected from 16, the suture fibers become entangled with each other or with the fabrics 1a and 1b due to the force of the jet stream.
1b and the nozzles 16, 16, if the position of the jet stream is moved relative to the laminated cloths 1a, 1b.
The suture is performed along the suture line drawn as the needle moves.

In this case, the jet streams that collide with the surfaces of the fabrics 1a and 1b are scattered there, and the upper and lower jet streams that have penetrated deeply into the fabrics are also injected at the same position on the fabrics, so they mutually fly at high speeds. It collides and scatters into the surrounding area. Therefore, cloth 1a, 1b
There is little liquid left inside, and much of it will be scattered around.

At the same time as this suturing operation, both nozzles 1
Since the inside of the covers 18, 18 covering the circumferential portions 6, 16 is suctioned and exhausted to the outside by the suction and discharge device, the above-mentioned scattered liquid is discharged to the outside through the suction pipe 17. Therefore, it is possible to eliminate as much as possible the wetting and staining of the cloth due to the use of liquids such as water.

In this case, cover 1 by the suction and discharge device
Due to the suction and exhaust in 8 and 18, a suction force acts on the cloths 1a and 1b from the openings 19 and 22 that eject the jet flow, and as a result, the laminated cloths 1a and 1b are mutually separated. A peeling force acts in the direction of separating the two, which may impede suturing or weaken the suturing force.

However, the cloth 1 is laminated between the upper cover 18 and the lower cover 18 by the elastic body 24.
A pinching plate 20 is provided to pinch a and 1b, and the elastic body 2
4 applies a sufficient clamping force to the cloths 1a, 1b to be sewn to eliminate the influence of the suction force within the cover 18, thereby preventing the cloths 1a, 1b from peeling off. Further, by using the pressure plate 20, the distance between the covers 18, 18 can be adjusted to correspond to changes in the thickness of the laminated cloth, and stable stitching can be performed.

Note that instead of the above configuration, the upper and lower covers 18,
It is conceivable to reduce the distance between the covers 18 to prevent the fabrics 1a and 1b from peeling off, but this would not be able to cope with changes in the thickness of the fabrics to be sewn, and the cover 1
Even if the spacing between 8 and 18 were made adjustable, proper adjustment is very difficult. Furthermore, although it is possible to apply a strong tension to the cloths 1a, 1b within the covers 18, 18 to overcome the suction force, the device becomes complicated and its operation becomes complicated.

Cloths that can be stitched by the above-mentioned cloth stitching device include various fabrics commonly used for clothing and their equivalents. Of course, these include towels, lace, knitted fabrics, nonwoven fabrics, and the like.

When sewing a plurality of laminated cloths 1a and 1b, if the cloth itself has fluff or other fibers that can be used as sewing fibers, a high-pressure jet stream is applied directly to those cloths. However, if the fabric itself does not have stitching fibers or has a small amount of stitching fibers, stitching fibers are separately added to the surface of the fabric, and a jet stream is ejected from above those fibers.

The jet flow of the above-mentioned high pressure fluid is generally 300
~1000Kgf/ ^cm2 of water pressurized to 0.05~0.1
It is sprayed from a nozzle with an inner diameter of about mm, and various conditions are selected depending on the properties of the fabrics to be sewn and the stitching fibers to be entangled with them.

Further, as the fluid jetted from the nozzle, it is generally suitable to use a liquid such as water, but a gas-liquid mixed fluid such as mist in the form of water droplets is also effective.

[Effects of the Invention] According to the suturing device of the present invention described in detail above, in a device for suturing cloth by jetting a jet stream from both the front and back sides of laminated cloth, wetting of the cloth can be prevented as much as possible, and In order to obtain suture strength, when the liquid that has been scattered through the cover is suctioned and discharged from both the front and back sides of the cloth, the suction force prevents the laminated cloth from separating up and down, making it possible to perform stable sutures. At the same time, it can also accommodate changes in the thickness of the laminated cloth.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of a cloth stitching device according to the present invention, and FIG. 2 is a partially cutaway side view of a previously proposed stitching device. 1a, 1b... Cloth, 12, 13... Jet stream injection means, 16... Nozzle, 18... Cover, 2
0...Press plate, 24...Elastic body.

Claims (1)

[Scope of Claims] 1. A plurality of cloths each having fibers of the cloth itself or fibers added separately as fibers for entanglement are held in a stacked state, and a high pressure liquid or gas liquid is applied to these cloths from a nozzle. In a fabric sewing device that injects a mixed fluid as a thin jet flow and stitches laminated cloth by relatively moving the injection position, the nozzle is configured to inject the nozzle to the same position from both the front and back sides of the laminated cloth. The periphery of these nozzles is covered with a cover that leads to a suction and discharge device for suctioning and discharging the splashed liquid, and one of the covers is laminated with an elastic body between the other cover. A cloth suturing device using a jet flow, characterized in that it is provided with a pressure plate that compresses the cloth.