JPH0221003Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an automatic sewing machine used in sewing factories and the like.

<Prior Art> In order to sew gusset members for automobile seat covers, a plurality of types of long strip-shaped cloths (hereinafter referred to as "works") are folded back and sewn together, and sewn together. Conventionally, these sewing operations have been performed independently using a plurality of sewing machines.

<Problems to be solved by the invention> In the conventional method described above, it is difficult to improve work efficiency because a plurality of workpieces sewn by each sewing machine are transported to a sewing machine for combined sewing in the final process.

<Means for solving the problems> The present invention provides an automatic sewing machine that has improved the above conventional problems, and its characteristic configuration is that the first sewing machine 1A is installed on the upper table 3b. , a second sewing machine 1B is installed on the lower table 3a directly below the first sewing machine 1A, a third sewing machine 1C is installed spaced apart behind the second sewing machine 1B, and the first sewing machine is installed on the upper table 3b. 1A
The work sewn with the second sewing machine 1B is sewn with the third sewing machine.
In order to apply a predetermined tension to the workpieces fed into the sewing machine 1C and join them together, a weight 6 is attached to one end of the rope 8, which is hung on a pulley 5 provided at the upper end of the support column 4, and a balancer 7 is attached to the other end. A tension automatic adjustment device 10 equipped with a guide frame 9 for suspending a workpiece on a weight 6 is installed.

<Function> With the above configuration, it is possible to perform assembly line work in a coordinated manner using three sewing machines placed close to each other for sewing two or three types of workpieces and for combining them together. This eliminates slack in the workpiece and performs synchronized sewing of combined workpieces.

<Examples> Examples of the present invention will be described below based on the drawings. In FIG. 1, 1A is a first sewing machine, 1B is a second sewing machine, and 1C is a third sewing machine. These three first to third sewing machines 1A to 1C are collectively arranged. That is, the first sewing machine 1A is installed on the upper table 3b, the second sewing machine 1B is placed directly below the first sewing machine 1A on the lower table 3a, and
A third sewing machine 1C is installed separately behind the second sewing machine 1B. The first workpiece 2A is supplied to the first sewing machine 1A, and the second workpiece 2B or the second workpiece 2B and the third workpiece 2C are supplied to the second sewing machine 1B.

The third sewing machine 1C is supplied with a first work 2A sewn by the first sewing machine 1A and a second work 2B sewn by the second sewing machine 1B, or a second work 2B and a third work 2C.

Therefore, the automatic tension adjustment device 1 for the first workpiece 2A is installed between the first sewing machine 1A and the third sewing machine 1C.
0 is set. The configuration of this automatic tension adjustment device 10 is as follows.

As shown in detail in FIG. 2, a weight 6 and a balancer 7, which is slightly heavier than the weight 6, are guided by a support 4 that also serves as a guide rail so as to be movable up and down, and a pulley 5 is attached to the upper end of the support 4. A rope 8 is hung around the pulley 5, and the weight 6 and the balancer 7 are connected by the rope 8 in a hanging type. Further, the weight 6 has a structure in which a guide frame 9 for suspending the first work 2A is provided.

Since the present invention has the above-mentioned structure, for example, when sewing a gore member for a car seat shown in FIG. 3A, as shown in FIG. 1st to 3rd work 2
The original fabrics A to 2C are set, and the first work 2A is supplied to the first sewing machine 1A, and the second work 2B and third work 2C are supplied to the second sewing machine 1B.

The end of the first workpiece 2A supplied to the first sewing machine 1A is folded back and sewn A as shown in FIG. 3A. Further, the second sewing machine 1B folds back the third work 2C and sews it onto the second work 2B.

First workpiece 2 sewn by first sewing machine 1A
A is supplied to the third sewing machine 1C via the guide frame 9 of the automatic tension adjustment device 10, and the second workpiece 2B is sewn by the second sewing machine 1B.
The third workpiece 2C is directly supplied to the third sewing machine 1C and merges with the first workpiece 2A, and the third sewing machine 1C stitches together the first workpiece 2A and the second workpiece 2B as shown in FIG. 3A. C and sent out.

In addition, as shown in FIG. 3B, the third work 2C is omitted and the terminal of the second work 2B is connected to the second sewing machine 1B
Fold over and sew B, and then sew this second work 2B and the first
It is also possible to stitch together the workpiece 2A with the third sewing machine 1C. Furthermore, as shown in FIG. 3C, it is also possible to fold the second workpiece 2B twice and sew it B.

The second workpiece 2B and the third workpiece 2C supplied from the second sewing machine 1B to the third sewing machine 1C run on the lower table 3a, so no slack occurs.
The first workpiece 2A supplied from the first sewing machine 1A to the third sewing machine 1C has slack. However, in the present invention, the automatic tension adjustment device 10 prevents the first workpiece 2A from sagging before being supplied to the third sewing machine 1C.

<Effects of the invention> As described above, according to the invention, three sewing machines, each of which sews in a different place, can be connected to the upper table 3b.
The first sewing machine 1A is installed above, and the lower table 3a is
Above, a second sewing machine 1B is installed directly below the first sewing machine 1A, and a third sewing machine 1C is installed at a distance behind the second sewing machine 1B, and two or three types of workpieces are placed on the two sewing machines. The efficiency of the sewing process is significantly improved by the linked processing of each sewing machine, which distributes and supplies the sewing material and performs the sewing process, and then merges into one sewing machine to perform the combined sewing process.
The automatic tension adjustment device with a simple structure can prevent workpieces from sagging in areas where sagging occurs, and can feed the workpieces, and has the advantage of being able to assemble and sew a plurality of good-quality workpieces with high productivity.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a view taken along the arrow in FIG. 1, and FIG. 3 is an explanatory view showing various examples of sewing. 1A...First sewing machine, 1B...Second sewing machine, 1
C...Third sewing machine, 2A...First workpiece, 2B...
...Second work, 2C...Third work, 10...Tension automatic adjustment device.

Claims (1)

[Scope of utility model registration request] A first sewing machine 1A is installed on the upper table 3b, a second sewing machine 1B is placed directly below the first sewing machine 1A on the lower table 3a, and a third sewing machine 1C is spaced apart behind the second sewing machine 1B. The first sewing machine 1A is installed on the upper table 3b.
The work sewn with the second sewing machine 1B is sewn with the third sewing machine.
In order to apply a predetermined tension to the workpieces fed into the sewing machine 1C and join them together, a weight 6 is attached to one end of the rope 8, which is hung on a pulley 5 provided at the upper end of the support column 4, and a balancer 7 is attached to the other end. This automatic sewing machine is equipped with an automatic tension adjustment device 10 equipped with a guide frame 9 for suspending a workpiece on a weight 6.