JPH02145843A - Sewing of bulky yarn - Google Patents

Abstract

PURPOSE:To perform beautiful sewing of a bulky yarn preventing the loosening of a cover yarn in the case of large deflection of the sewing direction by placing a compensation tool in a cover yarn path in a process for winding a cover yarn around a core yarn to successively make a bulky yarn and sewing the bulky yarn to a cloth by the aid of a bobbin thread. CONSTITUTION:A bulky yarn 27 is successively formed by winding a cover yarn 26 around a core yarn 14 and the formed bulky yarn is sewn to a cloth 30 by the aid of a bobbin thread 7. In the above process, a compensation tool 31 is placed in the path of the cover yarn 26 to be wound around the core yarn 14. The path is extended from a cover yarn bobbin 21 through a guide 22, a ring 23 and a hole 25 to the core yarn 14. The compensation tool 31 is a coil spring. The base 32 of the tool is fixed to a supporting cylinder 17 and the cover yarn 26 is passed through the free end of the tool. The loosening of the cover yarn 26 can be prevented even in the case of a sharp curve of the seam where a nipple 13 largely changes the direction in accordance to the motion of the foregoing core yarn 14 relative to the motion of the cloth 30.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bulky thread sewing method in which a bulky thread with a cord pattern appearance, which is formed by winding a winding thread around a core thread, is sewn onto a cloth. .

[Conventional technology]

In the process of attaching the core thread to the moving cloth, the thread is wound around the core thread and is then let out, and the thread that is let out changes into a bulky thread that presents a cord-like pattern. They were sewn onto the cloth one by one.

[Problem to be solved by the invention]

This conventional method of sewing bulky threads is such that when the direction of movement of the fabric changes in the X or Y direction (in most cases, the combined direction) shown in Figure 4, the core thread always precedes the movement of the fabric. Change the direction of the nipple for supplying the core yarn in accordance with the timing. This will allow you to sew in a desirable manner. However, when sewing a large curve like the curved portion 28 in FIG. 4 using a high-speed embroidery sewing machine, there is a problem in that the winding thread of the bulky thread becomes loose and the cord pattern of the bulky thread is distorted.

The present invention has been made in view of the above-mentioned points, and its purpose is to limit the feeding of the winding thread at sharp curves when sewing bulky thread with a high-speed sewing machine, and to prevent the occurrence of bagging. It is an object of the present invention to provide a method for sewing bulky threads that avoids the occurrence of bulky threads.

[Means to solve problems]

In order to achieve the above object, the present invention has the scope of the above claims,
The measures as described are taken, and their effects are as follows.

[Effect]

A slack remover is attached to the winding thread, and when the direction of the nipple changes and the winding thread becomes susceptible to slack, the slack remover is used to remove the slack from the winding thread.

〔Example〕

The drawings showing the embodiments of the present application will be described below.

In FIG. 1, A indicates a part of the base frame of an embroidery line sewing machine (for example, a Cornelly type sewing machine), which is continuous with the bed 1. 2 is a well-known louver, 3 is a screw gear for driving, 4 is a hollow needle bar configured to be vertically movable and rotatable, and below is a well-known needle 6 for pulling up the bobbin thread 7 for sewing. has. 8 is a rotating cylinder having a bevel gear 9, and is provided with a vertical groove 15 that engages an interlocking key 16 fixed to the holder pi 10 so that the rotation of the bevel gear 9 can be transmitted to the nipple holder *10. Below this holding l1110 is a thread hole 1.
2, and when rotating the bevel gear 9, the nipple 13 is interlocked with the needle 6 by an interlocking mechanism not shown.
3, and the nipple 13 can be moved up and down by moving the drive lever 11 up and down.

17 is a bobbin support book supported by receiver II 17a,
The bridge is rotatably supported at 18, and when the gear 19 is turned,
It rotates together with the support rod 20 and the guide lever 24.

A winding thread 26 is wound around a rotatable winding thread bobbin 21, and when the winding thread 26 is pulled from the cloth 30 side, the winding thread 26 passes down through the guide 22, the winding path 23, and the hole 25 in order. It's coming.

Next, in the case of the sag spring 31 shown in FIG. A thread 26 is inserted through the thread holding portion. This free end 33 is elastically bent, but when free extends toward the position indicated by 33a in FIG. Therefore, in the illustrated state, the winding thread 26 is urged in the direction of the arrow 33b.

In the above configuration, the needle 6, the louver 2, the nipple 13, and the support cylinder 17 are operated in the same manner as the well-known Cornelly sewing machine,
When the cloth 30 is moved in the direction of the arrow 30a, the winding thread 26 is wound around the core thread 14, thereby creating a bulky thread 27, which is sewn onto the cloth 30 with the bobbin thread 7. Further, by moving a well-known embroidery machine frame (not shown) in the XY force directions, the cloth 30 attached thereto is also displaced in the XY force directions. The orientation of the nipple I3 and needle 6 is also changed in synchronization with the fabric so that the core yarn 14 is in front of the fabric 30 that has been folded (usually changed synchronously by a computer program). The winding thread 26 was drawn out smoothly while being restricted to a certain level by the action of the thread 20a.
The pulling force suddenly becomes stronger or weaker. This will make it easier for sag to occur, but sincerely, sag 31
This prevents the occurrence of sagging, and the winding yarn 26 of the bulky yarn 27 is always wrapped around the core yarn 14 in a constant and beautiful manner.

Next, Figure 5 shows a different example of the slack 31.
The elastic rod 4 whose tip 41 should always be at the position 41a
2 is elastically bent and lowered, and when the winding thread 26 becomes slack, it is lifted upward. Note that the zero part 43 that forms a ring-shaped thread path at the tip 41 and passes the winding thread 26 is fixedly attached to **** of the holding cylinder 17.

Next, Figure 6 shows a different example of the slack 31.
Always tip 5! The elastic rod 5 should be at the position 51a.
2 is elastically bent and lowered, and when the winding thread 2G becomes slack, it is lifted upward. Note that the zero end part 53, which forms a ring-shaped thread path at the tip 51 and passes the winding thread 26 therethrough, is fixed to the support rod nozzle.

〔Effect of the invention〕

As described above, in the present invention, when sewing the bulky thread 27, even if the direction of the nipple 13 suddenly changes, the winding thread 26 always takes up the slack between the winding thread bobbin 21 and the guide lever 24. Therefore, there is a feature that the winding thread 26 is always neatly wound around the core thread 14.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a sectional view, FIG. 2 is a perspective view of the main part, and '! Fig. s3 is a plan view of the main part, Fig. 4 is a plan view showing the sewing state of the bulky thread, and Figs. 5 and 6 are perspective views of the main part showing different examples. 4... Hollow needle bar, 6... Needle, 2... Louver, 1
3-... Nipple, 26... Winding thread, 14... Core thread, 3
0... middle cloth, 27... bulky thread. Engraving of the drawings (no changes to the contents) Drawing procedure amendment (method) 1. Indication of the case Special A No. 1983-300172 2. Name of the invention Method for planting bulky thread 3. Amendment Relationship with cases involving persons who commit crimes

Claims (1)

[Claims] In the process of sequentially sewing the bulky yarn formed by winding the winding thread around the core thread to the fabric, the winding thread is directed toward the core thread while being in a state where the slack can be taken up immediately when slack occurs using a slack take-up tool. A method of sewing bulky thread characterized by feeding it out.