JPH062196B2 - Device for holding the work - Google Patents

Description

TECHNICAL FIELD The present invention relates to a holding device for holding a sewing object placed on a cloth setting table of a sewing machine.

[Prior Art] Conventionally, when one sewing machine such as a front body of a men's clothing is sewn alternately one by one by an automatic sewing machine such as a front end ground sewing machine for men's clothing, the left front body or the right front body that has been set is turned over. Sewing is performed with the hem and collar held in layers and held by the holding device.

For example, in the case of sewing the left front body 40 and the end piece 41 having the shape shown in FIG. 9, a holding device matching the shapes of the hem portion 42 and the collar portion 43 of the sewing machine is aligned and screwed to the frame body of the sewing machine. Then, the hem portion 42 and the collar portion 43 are held.

[Problems to be Solved by the Invention] In the above-described conventional holding device, since the shape corresponds to the hem portion 42 and the collar portion 43, the right front part is sewn so that the hem and the collar are opposite to each other. In this case, the left and right holding devices had to be replaced manually. For this reason,
In particular, there is a drawback that a large amount of step time is required when producing a small lot and the man-hours are too long. Further, even when the length of the sewn product is changed, it is necessary to perform the positioning manually.

As described above, the conventional holding device has a problem that a replacement work is required every time the shape of the sewn product is changed, and the operation is troublesome.

[Means for Solving the Problems] A holding device for a sewn object of the present invention which solves the above-mentioned conventional problems is a holding mechanism rotatably attached to a frame of a sewing machine, and a drive mechanism for rotating the holding mechanism. The holding mechanism has a collar holding part and a hem holding part of the sewing object, and the driving mechanism rotates the holding mechanism to sew the collar holding part and the hem holding part. It is characterized in that it can be made to correspond to the collar portion and the hem portion of an object, respectively.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the drawings.

1 to 8 show a device for holding an article to be sewn according to an embodiment of the present invention.

First, the overall construction of a sewing machine, which is a machine exclusively for front-end ground sewing of men's clothing, will be described with reference to FIG. This sewing machine includes a frame 1 having a sewing mechanism 2 and a cloth setting table 3, and an intermediate presser mechanism 4 for pressing a workpiece placed on the cloth setting table 3, a left end holding device 5 and a right end holding device 6. It is equipped with. Reference numeral 7 is an operation panel for controlling sewing. The sewing mechanism 2 moves forward, backward, leftward and rightward to sew a workpiece on the cloth setting base 3.

The left end holding device 5 and the right end holding device 6 are respectively arranged on the right and left sides of the cloth setting table 3, and hold the hem portion or the collar portion of the left front body or the right front body set on the cloth setting table 3.

The left end holding device 5 and the right end holding device 6 each include a holding mechanism 8 in which a collar holding portion 9 and a hem holding portion 10 are provided on a base plate 12 as shown in FIG. 1, and a drive mechanism 21 for rotating the holding mechanism 8. And a positioning mechanism 30 for positioning the holding mechanism 8 left and right.

The collar holding portion 9 provided on the base plate 12 includes a plurality of collar pressers 11, a collar presser receiver 13, and a return spring 14.
And a collar pressing cylinder 15.

The collar presser 11 and the collar presser receiver 13 are arranged in a substantially doglegged shape according to the shape of the collar portion 43 of the left front body 40 (or front body) shown in FIG. The collar presser 11 is provided so as to be vertically rotatable with respect to the base plate 12, and the collar presser holder 1
3 is fixed to the base plate 12 so as to face the collar presser 11. As a result, when the collar presser 11 is pushed downward as shown in FIG. 3, the collar presser 11 and the collar presser receiver 13 can hold the cloth 16.

Further, the return spring 14 is provided between the L-shaped stop plate 28 provided on the base plate 12 and the collar presser 11 and always lifts the collar presser 11 upward. The collar presser cylinder 15 is fixed to the stop plate 28, and pushes the collar presser 11 downward against the spring force of the return spring 14. A plurality of collar presser cylinders 15 are provided for each collar presser 11.

The hem holding portion 10 provided on the base plate 12 is
It is configured by two hem pressers 17, a hem presser receiver 18, a hem presser cylinder 19, and a return spring 20.

The hem presser 17 and the hem presser receiver 18 are formed to have substantially the same shape as the outer shape of the hem portion 42 of the left front body 40 (or right front body) shown in FIG. 9 and have a structure capable of reliably holding the hem portion. The hem presser 17 is provided so as to be vertically rotatable with respect to the base plate 12 as shown in the drawing, and the hem presser receiver 18 is fixed to the base plate 12 and is positioned below the hem presser 17. By pushing down the hem retainer 17 downward, the material 16 can be held by being sandwiched between the hem retainer 17 and the hem retainer receiver 18.

The return spring 20 includes the base plate 12 and the hem retainer 17.
It is provided between and the hem presser foot 17 is always lifted upward. The hem presser cylinder 19 is fixedly provided on the support plate 19a provided on the base plate 12, and pushes the hem presser 17 downward against the spring force of the return spring 20. Two hem pressers 17 are arranged near both sides of the hem presser receiver 18, and are operated simultaneously by the hem presser cylinder 19.

The drive mechanism 21 that rotates the holding mechanism 8 includes a rotation cylinder 22, a rotation plate 24, and a rotation shaft 25.

The rotating cylinder 22 is fixed to one end of a support frame 23 as shown in FIG. 5, and its output shaft has a rotating plate 24.
Are connected. The rotating shaft 25 is held by a bearing 26 provided on the support frame 23, and the upper end thereof is connected to the rotating cylinder 22 via a rotating plate 24. Then, the base plate 12 of the holding mechanism 8 is attached to the lower end of the rotary shaft 25 with a set screw 27.

With such a structure, by driving the rotation cylinder 22, the holding mechanism 8 can be rotated via the rotation plate 24 and the rotation shaft 25.

The positioning mechanism 30 of the holding mechanism 8 is shown in FIGS.
As shown in FIGS. 7 and 7, the drive motor 31, the ball screw 32, the ball screw nut 34, and the guide rail 35.
And an L-shaped base 36.

The drive motor 31 is fixed to the frame body 1, and a ball screw 32 is connected to the rotation shaft of the drive motor 31 via a connection coupler 33. A ball screw nut 34 is screwed onto the ball screw 32, and an L-shaped base 36 is fixed to the ball screw nut 34. Also, the L-shaped base 36
The support frame 2 to which the holding mechanism 8 is rotatably attached
One end of 3 is fixed and a guide rail 35 is provided.

When the ball screw 32 is rotated by the drive motor 31, the ball screw nut 34 guided by the guide rail 35 moves to the left and right, whereby the support frame body 23 moves.

The collar presser cylinder 15, the hem presser cylinder 19, the rotation cylinder 22, and the drive motor 31 are controlled by operating the operation panel 7, respectively.

Next, the operation of the left end holding device 5 and the right end holding device 6 configured as described above will be described.

When the left front part 40 and the end piece 41 as shown in FIG.
The sewing line is read by D (image sensor),
Based on the read data, a predetermined length is offset from the sewing line, and the intermediate presser mechanism 7 presses the material.

Next, the sewing shape is determined from the read data, and the holding mechanism 8 of the left end holding device 5 on the hem portion 42 side and the holding mechanism 8 of the right end holding device 6 on the collar portion 43 side are rotated to move the hem portion 42.
The hem holding portion 10 corresponds to the side, and the collar holding portion 9 corresponds to the hem portion 43. The rotation of each holding mechanism 8 is performed by driving the rotation cylinder 22 of the drive mechanism 21. Further, by driving the drive motor 31 of the positioning mechanism 30,
The left and right holding mechanisms 8 are moved to the positions set by point and.

In this state, since the hem retainer 17 of the holding mechanism 8 on the hem portion 42 side is open, the hem retainer 18 is placed on the hem retainer receiver 18, and the hem retainer 17 is rotated by the hem retainer cylinder 19 to remove the hem retainer 42. Hold. Further, since the collar presser 11 of the holding mechanism 8 on the side of the collar portion 43 is also opened, the collar portion 43 is placed on the collar presser receiver 13 and the collar presser cylinder 15 is pushed down and held.

After sewing, the air in the collar presser cylinder 15 and the hem presser cylinder 19 is closed to open the collar presser 11 and the hem presser 17, and the cloth is taken out.

Further, when sewing the right front body, the positions of the hem and the collar are opposite to the left front body and the left front body. Therefore, the left and right holding mechanisms 8 are rotated by the rotating cylinders 22, and the hem holding portion 10 is attached to the hem portion of the right front body.
And the collar holding portion 9 corresponds to the collar portion.
Other operations are the same as those described above.

In addition, although the holding device provided in the sewing machine for sewing men's clothing has been described in the above embodiments, it is needless to say that the present invention can be applied to a sewing machine for sewing other objects to be sewn.

Further, the shape of each holding portion of the holding mechanism 8 can be changed according to the shape of the article to be sewn. Further, the rotary power used for the drive mechanism 21 is not limited to the rotary cylinder 22, and may use a cam and a crank or a motor.

[Effects of the Invention] As described above, the holding device of the present invention includes the holding mechanism rotatably attached to the frame of the sewing machine and the drive mechanism for rotating the holding mechanism. It has a collar holding part and a hem holding part of the sewn object, and the drive mechanism rotates the holding mechanism so that the collar holding part and the hem holding part correspond to the collar part and the hem part of the sewn object, respectively. By doing so, it becomes possible to hold the workpieces of different shapes simply by rotating the holding mechanism, and it is possible to shorten the step-down time during sewing and improve work efficiency. Can be achieved.

[Brief description of drawings]

FIG. 1 is a plan view of a holding mechanism of a holding device according to the present invention, FIG. 2 is a plan view of a sewing machine to which the present invention is applied, and FIG.
The figure which shows the state seen from the arrow Q direction of a figure, FIG. 4 shows the state seen from the arrow R direction of FIG. 1, FIG. 5 shows the state seen from the arrow direction of FIG. FIG. 6 is a plan view of the positioning mechanism of the holding device according to the present invention, FIG. 7 is a side view of the positioning mechanism shown in FIG. 6, and FIG. 8 is a view showing an operation when holding the left front part, and FIG. The figure is a diagram showing the left front part and the facing back. 1: Frame 2: Sewing mechanism 5: Left end holding device 6: Right end holding device 8: Holding mechanism 9: Collar holding part 10: Hem holding part 12: Base plate 21: Drive mechanism 30: Positioning mechanism

Claims (1)

[Claims] 1. A holding mechanism rotatably attached to a frame of a sewing machine, and a drive mechanism for rotating the holding mechanism,
The holding mechanism has a collar holding part and a hem holding part of the sewn object, and the driving mechanism rotates the holding mechanism to move the collar holding part and the hem holding part to the collar part and the hem of the sewn object. A device for holding a sewn object, characterized in that it can correspond to each part.