JPH0525583Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention is characterized in that a sewing machine body consisting of a sewing machine arm and a sewing machine bed is movably arranged relative to a fabric support plate.
The present invention relates to an automatic sewing machine in which a long hole is formed in a fabric support plate directly below a sewing needle along the moving direction of a sewing machine body, and sewing is performed while the sewing machine body is moved relative to the fabric support plate.

<Prior Art> Conventionally, in automatic sewing machines, the main body of the sewing machine moves relative to a fabric support plate serving as a throat plate, and a long hole is formed in the fabric support plate directly below the sewing needle along the direction of movement of the sewing machine main body. There is an automatic sewing machine.

This type of automatic sewing machine is equipped with a support to prevent the workpiece from bending downward from the elongated hole in the fabric support plate when the sewing needle moves downward and penetrates the workpiece. A receiving member having a supporting protrusion and a needle hole is fixedly or movably attached to the bed so that the supporting protrusion is inserted into the elongated hole.

<Problems to be solved by the invention> In addition, this type of automatic sewing machine is equipped with a presser clamp that presses and moves the workpiece on the fabric support plate, and the presser clamp moves the workpiece on the fabric support plate. While holding it down, move it in the direction of movement of the sewing machine body, that is, in the direction perpendicular to the longitudinal direction of the long hole, and then
The presser foot presses the workpiece at the sewing position from above and sews it. However, the supporting protrusion of the receiving member that supports the workpiece at the sewing position (the part that receives the needle hole)
However, in the past, it was cylindrical, and only the periphery through which the sewing needle penetrated was supported from below. Therefore, the lower part of the workpiece pressed from above by the presser foot that protrudes from the support protrusion of the receiving member enters the long hole of the fabric support plate, and the fabric of the workpiece is held at the peripheral corner of the long hole. This tends to interfere with the sewing area, which may impede the smooth movement of the workpiece during sewing and reduce the quality of the sewing.

The present invention was developed to solve the above-mentioned problems, and it stably supports the workpiece at the sewing position, and attaches the underside of the workpiece to the peripheral corner of the elongated hole provided in the fabric support plate. To provide an automatic sewing machine capable of performing high-quality sewing by moving a workpiece without hooking it, and is configured as follows.

<Means for solving the problem> In other words, the automatic sewing machine of the present invention has a workbench,
A sewing machine body that is movably supported on the workbench and has a needle that can move up and down, and a cloth support that is attached to the workbench and has a long hole that extends in the direction of movement of the sewing machine body through a vertical movement passage for the needle. In an automatic sewing machine equipped with a plate, the support part is inserted from below into a long hole on the fabric support plate, has an elongated shape along the longitudinal direction of the long hole, and has a needle hole bored in the center; The sewing machine includes a receiving member that supports the sewing object from below, and support means for supporting the receiving member with respect to the bed of the sewing machine main body.

<Function> In the automatic sewing machine configured as described above, the sewing machine body moves the needle up and down while moving along the longitudinal direction of the long hole of the fabric support plate, and the workpiece on the fabric support plate moves along the length of the long hole of the sewing machine body. Sewing is performed while moving in a direction perpendicular to the direction of movement. At this time, the support part of the receiving member inserted from below the slotted hole and having the needle hole supports the workpiece at the sewing position where the needle falls and penetrates, and this support part supports the workpiece at the sewing position where the needle falls and penetrates. Because of the elongated shape, the sewing object is stably supported and does not enter the elongated hole and interfere with the peripheral edge thereof.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

Figure 1 shows a partial perspective view of an automatic sewing machine, and Figure 2 shows a partial perspective view of an automatic sewing machine.
The figure shows a perspective view showing a mechanism for moving the sewing machine body 2 and the presser clamp 8.

First, an outline of an automatic sewing machine will be explained with reference to FIGS. 1 and 2. Reference numeral 1 denotes a workbench, and on the upper plate 1a of this workbench 1, a sewing machine body 2 and a presser clamp 8 are movable in directions perpendicular to each other. will be placed in The sewing machine main body 2 consists of a sewing machine arm 2a, and the bed 2b is movably arranged on two rails 3 arranged in parallel on the upper plate 1a as shown in FIG. motor 6 and two pulleys 4
A drive belt (timing belt) 5 is provided which is stretched between a and 4b, and a part of this drive belt 5 is connected to the lower side of the bed 2b. One pulley 4a is attached to the rotating shaft of a feed motor 6, and the other pulley 4b is supported by a bearing bracket 7, and the bed, that is, the sewing machine main body 2, moves, for example, in the X-axis direction by the rotation of the feed motor 6.

The presser clamp 8 is configured to press and move the workpiece on the cloth support plate from above with the clamp plate 8a, and has a long hole 8 formed along the seam.
A clamp plate 8a having a shape 8a is pivotally supported on a movable table 9 via an arm portion 8b so as to be able to swing up and down. A presser cylinder 10 is further mounted upward on the moving table 9, and its piston rod is connected to the presser clamp 8.
The clamp plate 8a of the presser clamp 8 performs a holding operation when the presser cylinder 10 is operated.

The movable table 9 moves in the Y-axis direction, which is perpendicular to the direction of movement of the sewing machine main body 2 described above.
A drive belt (timing belt) 14 is disposed so as to be able to run while being guided by two guide rods 11 arranged in parallel on a top, and serves as a drive mechanism, and is hung between a feed motor 12 and two pulleys 13a and 13b. is provided. One pulley 13a is the feed motor 1
The other pulley 13b is pivotally supported by a bearing bracket 15, and a part of the drive belt 14 is connected to the moving table 9, and the moving table 9, that is, the presser foot is rotated by the rotational drive of the feed motor 12. Clamp 8 moves in the Y-axis direction.

A sewing machine motor 16 is fixed to the end of the sewing machine arm 2a of the sewing machine body 2, a needle 17 is attached to the end of a needle bar that moves up and down by the sewing machine motor 16 at the lower end of the sewing machine arm 2a, and a presser is attached to the lower end of the arm. Legs 18 are provided on the clamp plate 8a of the presser clamp 8 so as to press the workpiece to be sewn.

A fabric support plate 19 is fixed to the upper plate 1a so as to cover the top of the upper plate 1a, and this fabric support plate 19, which serves as a needle plate, has a needle extending in the direction of movement of the sewing machine body 2 through a needle vertical movement path. A long hole 20 is formed.

On the other hand, a receiving member 21 having a needle hole is provided at the position where the needle 17 falls on the bed 2b. Third
As shown in the figure, an elongated support portion 22 is protruded from the upper surface of the receiving member 21, and a needle hole 23 is provided in the center of the support portion 22. The receiving member 21 is the fourth
As shown in FIG.
is screwed onto the tip of the support arm 24 so as to be inserted into the elongated hole 20 of the cloth support plate 19 from below,
The distal end of the support arm 24 is fixed to a portion of the bed 2b via a mounting bracket 25. The support part 22 of this receiving member 21 is inserted into the elongated hole 20 so that its longitudinal direction coincides with the support part 22.
The upper surface of the cloth support plate 19 is arranged so as to be located on substantially the same plane as the surface of the cloth support plate 19. The needle 17, which moves up and down due to the operation of the sewing machine, penetrates the workpiece when it descends and enters the needle hole 23 of the receiving member 21 below.
A stitch is formed on the workpiece by cooperation with the thread loop catcher 26 received in the bed 2b.

Next, the operation of the automatic sewing machine configured as described above will be explained.

For example, when sewing a pocket onto the body of a dress shirt, the periphery of the pocket fabric is folded using a folding machine (not shown) and placed on the body, and the presser clamp 8 places it on the fabric support plate 19. It is pressed and clamped from above by the sewing machine arm 2, and is moved to the sewing start position directly below the sewing machine arm 2 by the operation of the feed motor 12 and the drive belt 14.

Sewing pattern data for forming stitches along the periphery of the pocket cloth is stored in advance in a storage section within the control device, and these data are sequentially read out when the sewing machine is started. The feed motor 6 is controlled and driven based on the sewing pattern data, and moves in the X-axis direction via the drive belt 5, that is, along the longitudinal direction of a long hole 20 provided on the fabric support plate 19. At the same time, the presser clamp 8
The object to be sewn is moved in the Y-axis direction while being clamped by the operation of the feed motor 12 and the drive belt 14, which are driven and controlled based on sewing pattern data. During this time, the sewing machine main body 2 lowers the presser foot 18 and drives the needle 17 up and down while pressing the sewing position of the workpiece from above on the clamp plate 8a, and the thread loop catcher 26 provided in the bed 2b drives the needle 17 up and down. A seam is formed along the periphery of the pocket of the object to be sewn.

In this way, the object to be sewn is pressed from above by the presser foot 18 and the presser clamp 8 and sewn.
From below, the sewing position is stably supported by a receiving member 21 having an elongated support portion 22. Also,
Due to this receiving member 21, when the cloth of the workpiece is moved in the Y-axis direction by the presser clamp 8, etc., it enters the long hole 20 of the cloth support plate 19 and interferes with the peripheral corner of the long hole 20. This does not occur, and the workpiece is smoothly fed during sewing, and sewing is performed satisfactorily.

6 and 7 show another embodiment. In this embodiment, the support arm 24 supporting the receiving member 21 described above is pivotably supported on the bed 2b by a shaft 30 so as to be rotatable up and down. Ru. The lower end of the support arm 24 is connected to a piston rod of an air cylinder 33 via a connecting member 31 and a joint 32.
The end of the air cylinder 33 is pivotally supported by a part of the bed 2b.

This air cylinder 33 is provided to move the receiving member 21 up and down, and during sewing, the air cylinder 33 operates to pull back its piston rod to raise the receiving member 21 and move its support portion 22 up and down the length of the fabric support plate 19. It is inserted into the hole 20. When performing work such as replacing the bobbin thread bobbin,
When a switch is operated, the air cylinder 33
is pushed out and the support arm 24 is rotated counterclockwise in FIG.
As a result, the sewing machine main body 2 has a long hole 20 in the X-axis direction.
The operator can move the sewing machine main body 2 close to the front of the workbench 1 to easily replace the bobbin thread bobbin.

<Effects of the invention> As explained above, according to the automatic sewing machine of the invention, the sewing machine body is movably disposed relative to the fabric support plate, and the sewing machine body is movably disposed on the fabric support plate directly below the sewing needle along the moving direction of the sewing machine body. In an automatic sewing machine in which sewing is performed while moving the sewing machine body relative to a fabric support plate, a receiving member having a needle hole and supporting the workpiece from below is inserted into the elongated hole and has a long hole. Since the elongated support part is provided along the length of the hole, when the needle descends and penetrates the material to be sewn,
The sewing position of the workpiece can be stably supported from below. In addition, when the workpiece is held down by a presser foot or the like and sent in the transverse direction of the long hole, the workpiece at the sewing position does not enter the long hole and interfere with the peripheral corner of the long hole. Therefore, the workpiece can be fed smoothly and high-quality sewing can be performed.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, Fig. 1 is a perspective view of an automatic sewing machine, Fig. 2 is a perspective view showing its moving mechanism, Fig. 3 is a perspective view of a receiving member, and Fig. 4 is a sewing machine main body. FIG. 5 is a schematic longitudinal sectional view of the position, FIG. 6 is a schematic longitudinal sectional view of another embodiment, and FIG. 7 is a schematic plan view thereof. 1... Workbench, 2... Sewing machine body, 17...
Needle, 19... Cloth support plate, 20... Long hole, 21...
Reception member, 22... Support part, 23... Needle hole, 24
...Support arm.

Claims (1)

[Claims for Utility Model Registration] A workbench; a sewing machine body movably supported on the workbench and having a needle that can move up and down; an automatic sewing machine comprising: a cloth support plate having a long hole extending in the direction of movement of the sewing machine body; A receiving member having a supporting part with a needle hole bored in the center and supporting the sewing material from below; and supporting means for supporting the receiving member against the bed of the sewing machine main body. An automatic sewing machine characterized by: