JPH02251659A - Perforation system in jacquard embroidery machine - Google Patents

Abstract

PURPOSE:To prevent fray of a thread and unevenness of the embroidery stitch surface by perforating a cloth to be used for embroidery using a perforating unit according to perforation-controlling signals based on a perforation program and subsequently operating the XY drive of an embroidery hoop and an embroidery needle based on an embroidery pattern program. CONSTITUTION:In giving a hole stitch embroidery to a cloth (A) to be used for embroidery tightly spread over an embroidery hoop 4, a perforation program is read from a punched tape using a reader 7 and perforation control signals are output to a controller 6. By the above-mentioned controller 6, an XY drive unit 5 and the perforating unit 8 of a perforation system 9 are operated to perforate a prescribed position of the above-mentioned cloth (A) for embroidery. A punched tape of a embroidery pattern is then read and a hole stitch embroidery is given to the above-mentioned perforated part while controlling operation of the XY drive of the embroidery hoop 4 and the vertical movement of an embroidery needle 2.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the hole punching mechanism of a jacquard embroidery machine, and in particular, when applying overlock embroidery to the perforated position of a cloth to be embroidered, The perforation of a jacquard embroidery machine is related to a mechanism that prevents fraying of threads in cut portions of cloth and swelling of overcast embroidery due to perforation of the cloth, thereby allowing perforation embroidery to be performed without spoiling the aesthetic appearance.

[Conventional Technique] Conventionally, in order to apply perforated embroidery to a cloth to be embroidered using a jacquard embroidery machine, the embroidery needle attached to the embroidery needle vertical movement mechanism that constitutes the above-mentioned jacquard embroidery machine is moved as shown in Fig. 4(a). As shown in or b), the tip is replaced with a cutting needle a whose tip is formed in a straight or cross shape, and by vertical movement of the cutting needle a, the tissue threads constituting the cloth to be embroidered are cut in advance at a desired position. There is known a device in which overlock embroidery is applied around the cut portion. (Tokuko Sho 55-10702
However, with this method, overlock embroidery is applied only to the straight or cross-shaped sections of the tissue thread of the fabric to be embroidered stretched over an embroidery frame, and only the tensile action of the overlock embroidery thread is applied. Since the embroidery cloth is configured to form a hole in the embroidery cloth, the cut thread of the cut section b' of the embroidery cloth is connected to the embroidery thread C, as shown in FIG. 5(b). The cut portion b' of the embroidered cloth protrudes from the gap between the sections or is pulled together by the tension of the embroidery hook.

It has the disadvantage that it rises during embroidery stitching and forms an uneven stitching surface d between it and the fabric section that is not affected by the above-mentioned tensile action, which significantly impairs the beauty of stitching embroidery. It was something.

[Problems to be solved by the present invention] In view of the above-mentioned circumstances, the present invention was devised to eliminate the drawbacks of the conventional technology. By punching and removing a part of the cloth to form embroidery holes, and applying embroidery to the embroidery holes, an excellent aesthetic appearance is achieved without fraying of the threads or unevenness of the embroidery surface. The purpose of this invention is to provide a perforation mechanism for a jacquard embroidery machine that can perform perforation embroidery.

[Means for solving the problem] In order to solve the problem, the technical means adopted by the present invention are as follows:
A needle case that moves multiple embroidery needles up and down.

An embroidery frame that can be moved horizontally and is made by stretching the cloth to be embroidered;
In order to perform embroidery at a predetermined position on the cloth to be embroidered, the jacquard embroidery machine includes a control device that controls the vertical movement of the embroidery needle and the horizontal movement of the embroidery frame. A punching body that punches through and removes the fabric to be embroidered stretched over a frame from above is provided so as to be movable up and down, and when the punching body moves downward to punch out the fabric to be embroidered, the punching body passes through the fabric to be embroidered and removes the fabric. This is characterized in that a punching guide recess into which the embroidery is inserted is formed in the table below the cloth to be embroidered.

[Operations of the Invention] Therefore, according to the present invention, it is possible to perform hole-over embroidery using a jacquard embroidery machine on a cloth to be embroidered without causing fraying of threads or unevenness of the embroidery surface, and without impairing the aesthetic appearance. I can do it.

[Example] The configuration of the present invention will be described in detail with respect to a portion shown in the drawings.

1 to 3, 1 is a jacquard embroidery machine, and the jacquard embroidery machine 1 has a needle case 3 in which a plurality of embroidery needles 2, 2, . ，
3... and the needle case 32.3... consists of an embroidery frame 4 on which the cloth A to be embroidered is horizontally stretched below,
The embroidery frame 4 is controlled by an X-Y drive device 5 so as to be movable back and forth and left and right, and the embroidery needles 2 of each needle case 3, 3...
, 2, . . . , embroidery is performed at a predetermined position on the cloth A to be embroidered.

A control device 6 is provided at the right end of the jacquard embroidery machine 1, and a punching tape reading mechanism 7 built in the control device 6 reads a punching tape (not shown) programmed with a predetermined embroidery pattern. Accordingly, the X-Y drive device 5 and the embroidery needles 2, 2...
・Controls the operation of

In addition, a cylindrical punching body 8 is located near each needle case 3, 3... in which the embroidery needles 2, 2... are arranged in series.
A punching mechanism 9 is provided in which the lower end of the punching body 8 is inserted into a punching guide recess 11 formed in a sharp-pointed manner at the contact portion of the table 10 below the stretched cloth to be embroidered. The circumferential circular blade 8a is inserted, and the punching body 8 and the punching guide recess 11 work together to embroidery and punch holes 12 at predetermined positions on the stretched fabric A. A mechanism 13 is constructed in the hole.

In the above configuration, in order to embroidery the embroidery cloth A stretched in the embroidery frame 4, first, a punching program is run to punch the embroidery holes 13 at predetermined positions on the embroidery cloth A. By causing the punching tape reading device 7 to read the punched punching tape in advance, the control device 6 controls the X-Y 1g movement N by the punching control signal sent from the punching tape reading mechanism 7.
5 and the punching body 8 of the punching mechanism 9 are moved downward to remove the embroidered cloth A.
Perform drilling into. Thereafter, a punching tape programmed with a normal embroidery pattern is read in, and the X-Y drive unit 5 operates the embroidery frame 4 and embroidery needles 2, 2, etc., thereby over-embroidering the punched embroidery holes 12. If this is done, as shown in FIG. 5(a), it is possible to obtain perforated embroidery with excellent aesthetic appearance without fraying of the threads or unevenness of the stitching surface.

In the above embodiment, the punching body 8 for punching out the cloth A to be embroidered has a circular shape, but the punching body 8 is not limited to this.
Various punched bodies 8 such as elliptical shapes are used.

A punching guide recess 11 corresponding to the rectangular shape of the punching body 8 may be formed on the table 10.
・The punching body 8 is positioned and attached near the other embroidery needles 2゜2..., and the embroidery needle is punched using the embroidery needle vertical movement mechanism built into the needle case 3. The embroidery cloth A may be punched out by cooperative operation with the guide recess 11.
The structure of forming a punching guide recess in the table below the cloth to be embroidered which penetrates the cloth to be embroidered and into which the punching body is inserted when the punching body of the present invention moves downward is similar to that of a jacquard embroidery machine. It can also be applied to an embroidered lace machine having the following configuration.

[Effects of the Invention] In short, the present invention provides a needle case that moves a plurality of embroidery needles up and down, an embroidery frame that is horizontally movable and has an embroidery cloth stretched over it, and a predetermined position of the embroidery cloth. In a jacquard embroidery machine that includes a control device that controls the vertical movement of an embroidery needle and the horizontal movement of an embroidery frame,
In the vicinity of the embroidery needle, there is provided a punching body that punches through and removes the embroidered cloth stretched over the embroidery frame from above, and is movable up and down. Since a punching guide recess into which the punching body is inserted through the embroidery cloth is formed on the table below the cloth to be embroidered, it is possible to perform overhole embroidery using a jacquard embroidery machine without force on the cloth stretched over the embroidery frame. This has an extremely useful novel effect in that it is possible to finish the embroidery with an excellent aesthetic appearance without fraying of the threads or unevenness of the embroidery surface without creating an expanded state.

[Brief explanation of drawings]

The drawings show one embodiment of the perforation mechanism of the jacquard embroidery machine according to the present invention, in which FIG. 1 is an overall perspective view, FIGS. 2 and 3 are explanatory diagrams of the main parts, and FIG. Figures (a) and b) are explanatory diagrams of the conventional main parts, FIG. 5(a) is an explanatory diagram of the functions showing the finished state, and FIG. be. In the figure, 1... Jacquard embroidery machine, 2, 2... Embroidery needle, 3.3... Needle case, 4... Embroidery frame, 6... Control device. 8... Punching body, 11... Punching guide recess, 13...
The hole is a mechanism, and A...the cloth to be embroidered.

Claims (1)

[Claims] A needle case that moves a plurality of embroidery needles up and down, an embroidery frame that is horizontally movable and has a cloth to be embroidered stretched over it, and a needle case that moves the embroidery needles up and down in order to embroidery at a predetermined position on the cloth to be embroidered. In a jacquard embroidery machine that includes a control device that controls the horizontal movement and drive of the frame, there is a
A punching body that punches through and removes the cloth to be embroidered stretched over an embroidery frame from above is provided, and is movable up and down. A hole punching mechanism for a jacquard embroidery machine, characterized in that a punching guide recess into which a hole is inserted is formed in a table below a cloth to be embroidered.