JP2903108B2 - Fabric punching method by rotating punch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for punching a fabric using a rotary punch, which is suitable for punching a hole in a fabric such as woven or non-woven fabric or a base fabric such as leather.

[0002]

2. Description of the Related Art As a device for sewing a hole pattern on a fabric,
Conventionally, for example, there is one described in Japanese Patent Application Laid-Open No. 8-158235. In this conventional technique, the needle bar of the automatic embroidery sewing machine is suspended and operable during the operation of the sewing machine. A rotating knife is provided, and a needle guide for guiding a sewing needle at the lower end of the needle bar is provided at the lower end of the elevating bar provided adjacent to the needle bar, and the needle bar and the elevating bar are moved by the rotating knife. A hole-shaped pattern sewing apparatus provided with interlocking means for interlocking the lowering rod to the lower limit and guiding the sewing machine needle only when stitches are formed in the holes formed in the base cloth.

That is, during operation of the automatic embroidery sewing machine, the needle bar stops at the upper limit in response to a specific signal, and at the same time, the rotating knife mounting base is lowered and the rotating knife is rotated and fitted into the base cloth. After the cloth is pushed and spread to form the holes, the rotating knife mount is raised. Next, the embroidery frame moves, the hole just formed moves immediately below the needle bar and stops, and then the needle guide descends at a slightly earlier timing than the sewing needle to hold the hole at a predetermined size.

[0004] Next, the sewing machine needle descends into the needle guide fitted into the hole as described above, forms a stitch, and rises. When the sewing needle goes up and the needle guide goes up, the embroidery frame moves and the holeless portion of the base fabric comes to just below the needle bar and stops, and then the sewing machine needle moves up and down to stitch the holeless portion. create.

Further, when the sewing needle on which the seam is formed rises and comes out of the base cloth, the embroidery frame moves again to move the hole portion of the base cloth immediately below the sewing needle, and the needle guide and the needle guide are moved in the same manner as the previous time. When the sewing needle and needle guide rise, the hoop moves. By repeating the above operation, a seam is formed around the hole provided in the base cloth.

[0006]

The above-mentioned conventional rotary knife, which is called a rotary knife in the prior art, is a rotary knife as described in the above-mentioned prior art publication "0018" which is the only embodiment of the prior art. The lower end of a cone or pyramid or
Tapered wings are provided along these conical portions on all sides like glass pens of the past, and it is stated that "these wings have no blades so as not to cut the cloth." In other words, in order to make a hole in the cloth with such a pointed rotary knife, as described above, after inserting the conical rotary knife into the base cloth while rotating it, push the base cloth while rotating it with the rotating blades. This will open the hole.

[0007] Therefore, since the peripheral surface of the hole is raised (so-called fluffing), it is necessary to “sew” while widening the raised portion to make the periphery of the hole clear, which is troublesome and troublesome. There is a first problem.
Furthermore, in this conventional example, in order to perform the above “Kagari sewing” with a sewing machine needle, as described above, it is necessary to perform while performing the fluffing outward with a “needle guide” provided around the sewing machine needle, In addition to the second problem that this is also troublesome, there is also a problem that it is difficult to open large holes in the fabric.

In addition to the above-mentioned conventional example, a large number of flexible plastic fine objects are used as a so-called "live" as a cutting cloth mounting base for cutting a wide and long cloth into a rough contour with a lifting blade. There is also a mounting table on which a large number of block bodies planted and shaped in the form of `` Hana for Kenzan '' are arranged in parallel. After cutting the fabric into the desired pattern
The lifting blade is cut out of the fabric to obtain a product.

[0009] Therefore, in this conventional example, there is an essential problem that although the contour of the fabric can be removed, a circular hole closed in the fabric cannot be beautifully formed. In addition, there is a rotating hollow pipe with a circular cutting edge that can make holes in thick paper or cloth.However, since the paper mounting table is just a plastic table or wooden table, the surface becomes uneven immediately after drilling several times. In other words, there was a problem that a beautiful hole was not found in the fabric.

In order to eliminate the above-mentioned problems, the present invention is directed to forming a circular hole in a cloth such as woven or non-woven fabric or a base cloth such as leather with a circular cutting edge of a cylindrical rotary punch. By simply placing the desired base cloth on the pedestal base and drilling the holes, it is possible to easily and quickly drill a beautiful hole with a clear and lint-free periphery, and the service life of the pedestal. The purpose is to prolong.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to form a circular hole by rotating a circular cutting edge of a punch having a cylindrical shape and rotating against a base cloth placed on a base cloth mounting base. A plurality of flexible filaments made of plastic filaments are bundled as the base cloth mounting base, and a bundle of filaments is densely placed in a container, and an adhesive is penetrated into an upper portion of the filament bundle. This was achieved by drilling holes in the fabric with a rotating punch using the base fabric mounting pedestal that had been cured.

In addition, after inserting a large number of flexible filaments made of plastic long filaments into a slightly larger heat-shrinkable tube, the tube is heat-shrinked. The above-mentioned flexible filaments may be tightly bundled to form a long linear bundle, and the filament bundle obtained by cutting the long linear bundle into a desired length may be used.

[0013]

Embodiments of the present invention will be described with reference to the drawings. First, the basic form of the present invention is:
As shown in FIGS. 1 and 2, a base cloth 2 to be perforated is placed on a base cloth mounting base 1 fixed to a dovetail plate 1 a of an embroidery sewing machine made of a metal plate or the like and sent to the base cloth 2. A circular blade tip 4 of a punch 3 chucked to a well-known rotary drilling tool 3A such as a pneumatic rotary blade type is rotated and in contact with the base cloth 2 to have a diameter 2
This is to make a circular hole 5 of about 10 to 10 mm. And
In the present invention, the base 1 is made of plastic such as nylon or polypropylene and has a diameter of 0.3 to 1.0 mm.
After bundling a very large number of flexible filaments 6 as shown in FIG. 3 (a), each of which is cut into a desired length, a bundle of filaments 7 as shown in FIG. 3 (e) is obtained. Metal deep dish-shaped container 8
Place densely inside.

Next, an adhesive 9 such as a thread fray stopper is penetrated into the minute gap between the filaments in the upper part of the bundle of filaments 7 by capillary action, and is hardened by the base cloth mounting base 1 shown in FIG. With the rotary punch 3 lowered as described above, the rotary punch 3 is lowered by separating the required portion of the hardened wire bundle body 7 which is in a dense state through the base fabric 2 and the circular punch 5 as shown in FIG. Could be opened on the base fabric 2. After the perforation, by raising the rotary punch 3 as shown in FIG. 4, the bundle of filaments 7 in the container 8 is restored to the original densely packed state shown in FIG. 4 by the inherent elasticity of the material. In order to place the bundle of filaments 7 in the container 8, a large number of flexible filaments 6 cut to a desired length may be placed in the container 8 while being vertically aligned in the container 8 with fingers or the like. it can.

Further, as the bundle of filaments 7, FIG.
As shown in FIG. 3B, as shown in FIG. 3B, as shown in FIG. 3B, a number of flexible filaments 6 made of plastic long filaments are inserted into a slightly larger heat-shrinkable tube t as shown in FIG. Is heated and shrunk so that the flexible filaments 6 are tightly bundled as shown in FIG. 3 (c) to form a long linear bundle 7a. Then, the long linear bundle 7a is put into the semicircular groove 10a of the lower die 10 as shown in FIG.
By lowering 1 in the direction of the arrow, it is possible to use the linear bundle 7 as shown in FIG. 3E obtained by cutting the long linear bundle 7a to a desired length with the blade plate 11. Good.

Further, in FIG. 1 and FIG.
Is a spring for holding the base cloth vertically suspended around the rotary punch 3. When the base cloth 2 is immobilized in a separate frame, the spring S is omitted. Hole 5 could be drilled.

In FIG. 2, reference numeral P designates an air flow from an air supply source such as a separately-installed well-known compressor or the like for jetting toward a well-known rotating blade provided in the drilling tool 3A. In the present invention, the rotary punch 3 is a flexible pipe, and the rotary punch 3 uses a well-known blast type rotary hole drilling tool 3A that rotates at a speed of about 100 to 300 times per second by the rotation force of the rotary blade. As the drilling tool, a known electric rotary drilling tool such as a small high-speed electric drill may be used.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As means for raising and lowering the rotary hole drilling tool 3A,
It may be raised and lowered by manual operation, but among general machine tools, it is raised and lowered by using a well-known small drilling machine, or the sewing machine needle bar in which a sewing needle and a fabric retainer in a well-known multi-head embroidery sewing head are removed. The rotating hole drilling tool 3A was set and moved up and down in the manner of needle movement, and as shown in FIGS. 1 and 2, a beautiful hole was able to be drilled in the base cloth 2 by the pedestal 1 fixed to the gutter plate 1a of the sewing machine.

In this case, while the rotating hole drilling tool 3A after drilling the base cloth 2 is raised, the periphery of the circular hole 5 drilled in the base cloth 2 by another adjacent sewing needle of the sewing machine head is "Kagari". At the same time, it is possible to form a wide ring-shaped embroidery pattern around the circular hole 5 by performing "stitching" to prevent fraying.

Then, an adhesive 9 is poured into the bottom of the container 8 as shown in FIG.
5 (b), the lower portion of the bundle of filaments 7 is adhered to the bottom of the container 8 to form the base 1 for use in the present invention as shown in FIG. 5 (c). You may. In this case, it is possible to prevent the wire bundle 7 from being pulled out of the container 8 even if the density of the wire bundle 7 is slightly reduced. Further, the cloth waste 2a caught in the rotary punch 3 as shown in FIG.

Further, if the container 8 is mounted on the plate 1a for passing the outer flange 8A of the container 8 through the idle receiving seat 8B shown by a dashed line in FIG. By setting the locations at locations eccentric with respect to the pedestal 1, the perforated locations on the pedestal 1 are distributed to many locations, and when many beautiful holes are drilled in the base cloth 2, the number of replacements of the wire bundle 7 is reduced. It can be reduced significantly and becomes convenient.

When fine lint adheres to the bundle of filaments 7 of the base 1 and the cutting of the rotary punch 3 becomes poor,
After removing the lint with a bristle brush or the like, the adhesive 9
Can be permeated into the upper portion of the bundle of filaments 7 to be cured and restored to the initial state.

[0023]

The present invention adopts the above-described embodiment, and has the following effects. When the circular cutting edge 4 of the cylindrical rotating hole punch 3 is rotated against the base cloth 2 placed on the base cloth mounting base 1 to form a circular hole 5, the base cloth mounting base 1 is formed from a plastic filament. A bundle of filaments 7 in which a number of flexible filaments 6 are bundled
And the base cloth 2 is hardened by infiltrating the adhesive 9 into the upper part of the bundle of filaments 7 and the base cloth 2 is used to make a beautiful circular hole 5 in the base cloth 2 with a rotary punch. There is a first effect that it is possible to wake up.

Also, the bundles of filaments 7 closely packed in the container 8
Is strengthened by the infiltration and hardening of the adhesive 9, so that there is also a second effect that the service life of the base cloth mounting base 1 can be extended.

According to the second aspect of the present invention, as the bundle of filaments 7, a number of flexible filaments 6 made of plastic long filaments are placed in a slightly larger heat-shrinkable tube t. After the insertion, the tube t is heated and shrunk to tightly bundle the flexible filaments 6 to form a long linear bundle 7a, and the long linear bundle 7a is cut into a desired length. Since the obtained bundle of filaments 7 is used, it is easy to place and mount the bundle of filaments 7 on the container 8, and the production of the bundle of filaments 7 itself can be performed easily and quickly. Could be added.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing an example of a configuration for carrying out a method of the present invention.

FIG. 2 is a perspective view showing a configuration example for carrying out the method of the present invention.

FIG. 3 is a perspective view showing a production example of a filament bundle used in the present invention.

FIG. 4 is a longitudinal sectional view in a state different from FIG. 1;

FIG. 5 is a longitudinal sectional view showing an example of placing a filament bundle in a container according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base mounting base 2 Base 3 Rotating hole punch 4 Circular blade tip 5 Circular hole 6 Flexible filament 7 Linear bundle 7a Elongated linear bundle 8 Container 9 Adhesive S Base cloth spring t Heat shrinkable tube

Claims (2)

(57) [Claims] 1. A method of drilling a circular hole 5 by rotatingly contacting a circular cutting edge 4 of a cylindrical rotary hole punch 3 with a base cloth 2 placed on a base cloth mounting base 1. A bundle of filaments 7 formed by bundling a number of flexible filaments 6 made of plastic filaments is densely placed in a container 8, and an adhesive 9 is made to penetrate the upper portion of the bundle of filaments 7. A method for punching a cloth by a rotating punch using the base cloth mounting base 1 that has been cured. 2. After inserting a number of flexible filaments 6 made of plastic long filaments into a slightly larger heat-shrinkable tube t as the filament bundle 7, the tube t is removed. The flexible filaments 6 are tightly bound by heating and shrinking to form a long linear bundle 7a, and the filament bundle 7 obtained by cutting the long linear bundle 7a into a desired length is obtained. 2. A method for perforating a fabric with a rotary punch according to claim 1.