JPH05117956A - Sewing machine of ribbon embroidery - Google Patents

Abstract

PURPOSE:To obtain a sewing machine capable of simply and rapidly carry out ribbon embroidery of extremely readily sewing a braid on fabric. CONSTITUTION:A ribbon drum part 11 is axially supported behind a pressing bar fitting part 10 and a guide 12 having a ribbon sending hole 12a and a needle passing hole 12b is set at the front side of the pressing bar fitting part 10 to give an attachment B for ribbon embroidery. The attachment B for ribbon is detachably fixed to the lower part of a pressing bar 8 which is vertically movable by interlock of rotation of a pressing working cam 6 attached to an upper shaft 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a string embroidery sewing machine capable of making string embroidery simple and quick.

[0002]

2. Description of the Related Art Conventionally, a cord body having a large diameter is used, and the cord body is wrapped around and sewn on the cloth to embroider on the cloth with a sense of volume.

In addition, as a sewing machine having an embroidery function at present, there are various sewing machines capable of embroidering. For example, as a sewing machine with an embroidery function developed by the applicant, there is JP-A-2-57288.

[0004]

By the way, in the conventional sewing machine with an embroidery function, in order to perform embroidery with a sense of volume, the same place must be sewn many times, which causes thread breakage by the needle. It was difficult to give the volume feeling that was obtained with string embroidery.

Further, embroidering with a sewing machine and embroidering with a feeling of volume using a string as described above means that the string is fixed to the cloth by some means, and the string is sewn by the sewing machine. I had no choice but to sew.

[0006]

Therefore, as a result of earnest studies to solve the above problems, the inventor can move the invention up and down by interlocking with the rotation of the presser working cam provided on the upper shaft. A string embroidery provided with a guide having a string feeding hole and a needle through hole on the front side of the presser bar mounting portion, on the lower side of the presser bar, the drum portion for the cord is pivotally supported behind the presser rod mounting portion. The string embroidery sewing machine is characterized by the detachable attachment of the attachment, so that the string can be sent to the cloth substantially automatically, and the string can be sewn on the cloth. It is a thing.

[0007]

Embodiments of the present invention will be described below with reference to FIGS.

Reference numeral A shown in FIG. 1 is a sewing machine with an embroidery function, and indicates an embroidery sewing machine capable of embroidering only and a compound embroidery sewing machine capable of normal sewing and embroidery sewing. This sewing machine with an embroidery function has a central processing unit (C
Various embroidery stitches are made possible by a control device including a PU.

Further, in the sewing machine A with an embroidery function, an XY drive unit 1 is provided below the free arm A ₁ , and the XY drive unit 1 drives the X motor and the Y motor, respectively. Carriage guide 1a by the X motor
Is provided with a carriage body 1b which moves in the X direction, follows the carriage guide 1a in the X direction, and is also movable in the Y direction by a Y motor.

In the carriage body 1b of the XY drive unit 1,
The hoop 3 is attached via the attachment 2 (see FIG. 2).

A cloth is stretched on the hoop 3 and the free arm A ₁ is driven by the XY drive unit 1 as described above.
In addition, the computer program and the X controlled by the computer program
-The fabric may be moved manually without using the Y drive unit 1.

A presser working cam 6 is fixed to an end of an upper shaft 5 in an upper case 4 of the sewing machine A having an embroidery function, and a presser working arm 7 slidably abutting on the presser operating cam 6 and swinging.
A support shaft 7b at the base of a is pivotally supported (see FIG. 3).

A pin at the end of the swing link 7c, whose base is fixed to the support shaft 7b, is loosely inserted into a long hole at the upper end of a presser link 7d which is pivotally supported with its lower end pivotally supported. It is configured so that it can be held down. The lower end of the presser link 7d is pivotally supported on the upper end of a presser bar 8 which is supported so as to be vertically movable. A spring 9 such as a tension coil spring is interposed in the presser bar 8 so as to always spring downward.

The string embroidery attachment B comprises a presser bar attachment portion 10, a cord drum portion 11 and a guide 12. The cord drum portion 11 includes a drum 11a and a presser rod attachment portion via a frame 11b. The cord body 13 is fixed to the drum 10, and the cord body 13 is wound around the drum 11a (see FIGS. 3 and 4).

The cord 13 has a circular cross section or a ribbon-like band.

As shown in FIG. 4, the guide 12 has a free arm A which is a cord body 13 sent from a cord drum portion 11.
_It is to be placed on the upper fabric, and is a string sending hole 12
a and a needle through hole 12b are formed. The needle through hole 1
2b is formed as a long hole, and the sewing needle 14 can move up and down while swinging in the left-right direction.

Further, the cord feeding hole 12a is formed in a circular shape having a diameter larger than the thickness of the cord body 13 so that the cord body 13 can move smoothly.

As shown in FIG. 5 and the like, the cord feeding hole 12a and the needle through hole 12b of the guide 12 are connected by a connecting path 12c at the bottom surface, and the cord body 13 is connected to the cord feeding hole 12.
It enters into a from above, and the cord 1 is connected through the connecting path 12c.
3 passes under the needle through hole 12b.

The string 13 is sewn by the sewing machine needle 14 when passing the lower part of the needle through hole 12b (see FIG. 5).

As another embodiment of such a guide 12, as shown in FIG.
There are embodiments formed on the lateral sides of the. Specifically, when the guide 12 is viewed in a plane, as shown in FIG.
The string delivery hole 12a and the connecting path 12c are integrally formed so as to be substantially L-shaped and connected to the needle through hole 12b.

In the above-mentioned embodiment, the cord feeding hole 12a and the connecting path 12c are partially opened at the bottom surface of the guide 12.

The presser bar mounting portion 10 is constructed so as to be fixed to the lower end portion of the presser bar 8 with a photographing screw 15.

Next, the operation of the embodiment will be described.
First, the rotation of the upper shaft 5 rotates the presser working cam 6 fixed to the upper shaft 5, and the displacement amount of the presser operating cam 6 moves the presser bar 8 connected to the presser working arm 7a up and down. (See Figure 2).

On the other hand, the press screw 8 is attached to the presser bar 8 by
The attachment B for string embroidery is fixed, and the vertical movement of the presser bar 8, that is, the attachment B for string embroidery
When the cord embroidery attachment B is located above due to the vertical movement of the cord, as shown in FIG. Passing through the string sending hole 12a of
The string 13 is sent out on the cloth surface through the lower portion of the needle through hole 12b.

This is because the already sewn-on position of the cloth 13 of the cord body 13 is moved together by the movement of the XY drive unit 1 or the movement of the cloth by the manual operation, so that the drum 1 is moved.
The cord 13 is forcibly pulled out from 1a.

Contrary to the above state, when the cord embroidery attachment B is located below, as shown in FIG. 8, the cord body 13 is pressed onto the cloth by the guide 12, and the cord 13 is pressed. The body 13 has a mechanism in which a sewing needle 14 is sewn on a cloth surface by penetrating the needle through hole 12b.

The string 13 is sewn by alternately sewing the sewing needle 14 up and down while swinging to the left and right to alternately sew both sides of the string 13 (see FIGS. 11 and 12), or the string. There is one that is sewn at approximately the center of 13 (Fig. 13,
(See FIG. 14).

Reference numeral 16 in the drawing denotes a guide rod, which is the guide 12
It is fixed to 10 places of the presser bar attachment portion, and a guide ring portion 16a is formed at the tip thereof.

The guide ring portion 16a is formed in a spirally bent shape so that the cord body 13 can be easily inserted therein. In many cases, the guide rod 16 is formed to have elasticity so that it can be flexed favorably.

The ones shown in FIGS. 15 and 16 are
The drum 11a has a brake mechanism,
In FIG. 15, the drum 11a is fixed to the shaft rod 11c, and the shaft rod 11c projects to the outside of the frame 11b.
A screw portion 11d is formed on the tip end side of the protruding shaft rod 11c, and an adjusting screw 17 is screwed into the screw portion 11d.
A compression spring 18 (compression coil spring) is provided between the outer surface of one side of the frame 11b and the frame 11b, and the rotation of the drum 11a is controlled by the resistance of the elastic force. At this time, the adjusting screw 17 is locked by a lock nut 19 so as to be securely fixed at an appropriate position.
Are screwed together.

Further, the one shown in FIG. 16 has substantially the same constituent members as in the case of FIG. 15, and in particular, the shaft rod 11c is fixed to the frames 11b and 11b, and the drum is attached to the shaft rod 11c. 11a is rotatably provided, and the screw portion 1 of the shaft rod 11c between the frame 11b and the drum 11a.
The adjustment screw 17 is screwed into 1d, and the compression spring 18 (compression coil spring) is interposed between the adjustment screw 17 and the drum 11a. Also in this case, the lock nut 19
Are screwed together.

In the figure, 20 is a washer, which is provided between the compression spring 18 and the frame 11b (see FIG. 15) or the compression spring 18
And the drum 11a (see FIG. 16).

[0033]

According to the present invention, the presser bar 8 is vertically movable in association with the rotation of the presser working cam 6 provided on the upper shaft 5.
At the bottom of the bottom of the presser bar, the drum part for string 11
A cord embroidery sewing machine which is detachably provided with a cord embroidery attachment B having a guide 12 having a cord delivery hole 12a and a needle through hole 12b on the front side of the presser bar mounting portion 10. As a result, firstly, a string embroidery for sewing the string body 13 onto the cloth can be performed very easily and quickly, and secondly, the entire device can be extremely simplified.

To describe these effects in detail, the cord embroidery attachment B is formed integrally with the cord drum portion 11 and the guide 12 together with the presser bar mounting portion 10.

This string embroidery attachment B is attached to the lower end of the presser bar 8 of the sewing machine A with an embroidery function, and the string 1
3 is passed through the needle feed-through hole 12b through the string delivery hole 12a and placed on the cloth. After that, sewing of the string body 13 by the sewing machine needle 14 is started, and the cloth is appropriately moved (X
-Y drive section 1 or move by hand)
3 can be sent out almost automatically from the string drum portion 11 via the guide 12.

That is, the worker can sew the cord 13 on the cloth only by the ordinary working method of moving the cloth, which is an extremely simple operation and can be handled by a beginner almost easily. It is a thing.

Next, in the present invention, when the operator appropriately moves the cloth, the cord body 13 is pulled out from the cord drum portion 11 following the movement of the cloth. Does not require a power source such as a small motor at all, and the vertical movement of the guide 12 by the presser bar 8 of the sewing machine A with an embroidery function is used to bring the cord body 13 onto the cloth at an appropriate pressure with the guide 12. Sewing machine needle 1
Since the cord body 13 is sewn at 4,
Can be accurately sewn at a predetermined position to form a good string embroidery.

The string 13 can be sewn in a zigzag pattern, and if the embroidery frame 3 is driven in the XY direction via the attachment 2 provided in the XY drive unit 1, the string is sewn. There is also an advantage that it is possible to suitably embroidery stitches including the body 13 and having a full-bodied feeling.

The drum 11a equipped with a brake mechanism
If () is used (see FIGS. 15 and 16), the cord body 13 can be smoothly sewn without the cord body 13 being unnecessarily extended.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of the present invention.

FIG. 2 is a cross-sectional view of the main part of the string embroidery state.

FIG. 3 is a perspective view of main members

FIG. 4 is a perspective view of a string embroidery attachment.

FIG. 5 is a side view with a partial cross section of a string embroidery attachment.

FIG. 6 is a perspective view of another embodiment of the attachment for string embroidery.

7 is a plan sectional view of the guide of FIG.

8 to 10 are schematic diagrams showing an operating state of the present invention.

FIG. 11 is a perspective view showing a sewing state of the cord body.

FIG. 12 is a sectional view showing a sewing state of a cord body.

FIG. 13 is a perspective view showing a sewing state of a cord body according to another embodiment.

FIG. 14 is a perspective view showing a sewing state of a cord body according to another embodiment.

15 and 16 are sectional views of a drum provided with a brake mechanism.

[Explanation of symbols]

 1 B ... Attachment for string embroidery 2 5 ...... Upper shaft 3 6 ...... Presser working cam 4 8 ...... Presser bar 5 10 ...... Presser bar attachment part 6 11 …… Drum part for string 7 12 …… Guide 8 12a …… String sending hole 9 12b …… Needle through hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsushiro Omiya 3-1-1 Kyobashi, Chuo-ku, Tokyo Inside Jamme Sewing Machine Co., Ltd. (72) Takayuki Kawasato 3-1-1 Kyobashi, Chuo-ku, Tokyo In the Janome Sewing Machine Co., Ltd. (72) Inventor Yukio Hosaka 3-1-1 Kyobashi, Chuo-ku, Tokyo Inside the Janome Sewing Machine Co., Ltd. (72) Koichi Asai 3-1-1 Kyobashi, Chuo-ku, Tokyo Janome Sewing Machine Kogyo Co., Ltd. (72) Inventor Yoshiyoshi Toyoshima 3-1-1 Kyobashi, Chuo-ku, Tokyo Janome Sewing Machine Co., Ltd. (72) Inventor Kiyoshi Amano 3-1-1 Kyobashi, Chuo-ku, Tokyo Janome Sewing Machinery Co., Ltd. In the company

Claims (1)

[Claims] 1. A drum part for a cord is axially supported behind a presser bar attachment part on the lower part of a presser bar which is vertically movable in association with the rotation of a presser operating cam provided on an upper shaft, and the presser A string embroidery sewing machine characterized in that a string embroidery attachment having a guide having a string delivery hole and a needle through hole is detachably provided on the front side of the rod mounting portion.