JPS5939512A - Preparation of cloth retainer for sewing machine - Google Patents

Abstract

PURPOSE:To obtain the titled cloth retainer of good shape extremely easily and inexpensively by hardening ultraviolet ray setting liquid plastics by ultraviolet rays radiation in a special process. CONSTITUTION:First of all, ultraviolet ray setting liquid plastics P is poured into a vessel 4 having an opening in the upward direction, then the part 5b corresponding to the outer frame of the retainer H is made transparent and the upper surface of the vessel is covered with a covering body 5 that keeps the remaining part 5a from light. Thereafter, ultraviolet rays are radiated by an ultraviolet ray lamp 6 etc. from the upper surface of the covering body 5 to harden sufficiently liquid plastics P facing the transparent part 5b of the covering body 5. Finally, irradiation of ultraviolet rays is stopped and the covering body 5 is removed and the liquid plastics on the opaque ultraviolet non-irradiating part 5a is cleaned up to obtain the desired cloth retainer H.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of sewing a predetermined stitch by driving a cloth holder holding a workpiece in the X and -Y directions by an electric drive means such as a stepping motor or a mechanical means such as a cam. The present invention relates to a method of manufacturing a cloth holder for holding a workpiece in a sewing machine that produces a sewing machine.

Conventionally, when sewing the collar W of a dress shirt as shown in Fig. 1, for example, the seam outline is sewn as shown in Fig. 2. a5 A movable frame in which the collar W is held between the throat plate or another cloth holder H by a cloth holder H provided with a frame outside the needle drop point, and this cloth holder H is placed on the table 1. 2, move the movable frame 2 in the X-Y direction by a driving means such as a stepping motor based on movement data stored on a floppy disk, etc., and cause the needle to fall on the inner edge of the frame of the fabric holder. 1st
As shown in the figure, the stitches are formed along the outline of the collar W.

Now, in the past, when forming the cloth holder H, it was necessary to cut the plastic or metal member using an electronic numerically controlled cutting device, or to make a mold and thermoform the plastic. However, the programs for electronic numerically controlled cutting equipment are complicated, and the molds for thermoforming plastics are expensive, so either method has the drawback of increasing costs. Ta.

An object of the present invention is to provide an inexpensive method of manufacturing a cloth holder by using an ultraviolet curable liquid plastic.

Hereinafter, the present invention will be described in detail with reference to the drawings.
The container 4 has a rectangular shape larger than the outer shape of the fabric holder H to be manufactured, and has a horizontal bottom surface so that liquid can be stored therein. Next, as shown in Fig. 4, the part 5b corresponding to the outer frame of the cloth holder 1 is made transparent, and the other parts 5 n f'j Cover 5 to prevent light from passing through.Place one layer on the soil surface of vessel 4.This cover 5 can be made by pasting paper onto transparent glass, or by pasting paper onto transparent glass, or by attaching opaque to transparent glass. It can be easily made by vacuum evaporating a metal or the like. 6, 6 is an ultraviolet lamp.

In such an apparatus, when ultraviolet rays are irradiated from the upper surface of the cover 5 by the ultraviolet lamp 6, the liquid plastic facing the transparent portion 5b of the cover 5 begins to harden. When the liquid plastic facing the transparent portion 5b is sufficiently cured, the irradiation with ultraviolet rays is stopped, the covering 5 is removed from the soil surface of the container 4, and the light passing through the covering 5 is removed as shown in FIG. The liquid plastic that has not been exposed to ultraviolet rays by the exposed portion 5a is washed away, taken out from the cloth holder H container 4 made of hardened plastic, and subjected to processing such as polishing.

As described above, according to the present invention, the ultraviolet rays are irradiated to the ultraviolet curable liquid plastic through the cover 5, so that the transparent portion 5b of the cover 5 is adjusted to the shape of the cloth to be held. A cloth holder of a suitable shape can be obtained very easily at low cost simply by forming the cloth holder in a suitable manner.

Furthermore, if the pattern of the transparent portion 5b and the opaque portion 5a of the cover 5 is created by printing, it is possible to manufacture a large number of covers at once, thereby making it possible to mass-produce cloth holders. becomes.

f^1. In the above embodiment, a fabric holder for an electronically controlled pattern stitch sewing machine is manufactured. However, as a flat fabric presser foot with a frame along the needle drop point, for example, a fabric holder for a buttonhole sewing machine can be manufactured. According to the present invention, a frame-like presser foot for sewing complicated needle drop contours, such as a presser foot frame and a presser foot with a label of M/N, can be easily manufactured according to the present invention.

[Brief explanation of drawings]

Figure 1 is a perspective view of the collar of a shirt, Figure 2 is a diagram of the shirt being held in a holder, Figure 3 is a diagram of a container with ultraviolet curing liquid plastic stored in it, Figure 4 is a diagram of irradiating ultraviolet rays onto the container through the cover;
FIG. 5 is a diagram showing the washing away of uncured liquid plastic. 4... Container, P... Ultraviolet curable liquid plastic, 11
・・・・・・A11 Holder, 5... Cover, 6...
...Ultraviolet lamp patent applicant Tokyo Kata Kiko Co., Ltd. (' ) '6>

Claims (1)

[Claims] After covering the soil surface with an ultraviolet curable liquid plastic cover that does not pass through the container that opens upward, and irradiating ultraviolet rays from the top surface of the container for the time required for the liquid plastic to harden, A method for manufacturing a fabric holder for a sewing machine that cleans and removes liquid plastic from areas that are not irradiated with ultraviolet rays.