JPH03234287A - Controller for sewing machine - Google Patents

Abstract

PURPOSE:To surely control a sewing machine by controlling the elevators of a cloth presser and a cloth sandwiching plate with a sequencer having a long execution time, and controlling the rotary devices of a cloth placing plate interlocking with the motion of the needle of the sewing machine and the horizontal travel device of the sewing machine with a microcomputer having a short execution time. CONSTITUTION:Fluid pressure cylinders 106, 109 which elevate the cloth presser 6 and the cloth sandwiching plate 9 of the sewing machine 3 arc controlled with the sequencer 11 having a long execution time, respectively, and a motor 105 which operates the needle 5 of the sewing machine 3 at high speed, motors 103, 108 interlocking with the motion of the motor 105, and further, a feed amount change device of the feed dog of the sewing machine 3 are controlled with the microcomputer 12 having a short execution time. Sewing in sewing shape 35 can be performed by performing the horizontal feed of the sewing machine 3 intermittently with front cloth 32 and reinforcing cloth 33 sandwiched between the cloth placing plate 8 and the cloth sandwiching plate 9 as rotating intermittently the cloth placing plate 8 at prescribed speed when the sewing of a transition part 35 is performed, and locating the sewing parts of the front cloth 32 and the reinforcing cloth 33 under the needle 5 of the sewing machine 3.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a control device for a sewing machine.

(Background of the Invention) The inventors have developed the following sewing device. In other words, there is a sewing machine that is horizontally movable on a machine frame, and a machine frame that is positioned to the side of the sewing machine's bed so that its lower surface is flush or almost flush with the top surface of the sewing machine's bed. This sewing device has a cloth mounting plate that is rotatably provided on the cloth mounting plate, and a cloth holding plate that is vertically movable and freely rotatable on the machine frame above the cloth mounting plate.

An object of the present invention is to provide a control device that can reliably control the device.

(Example) The present invention will be described below based on an example with reference to the drawings.

First, an overview of the sewing device 1 to be controlled will be explained based on FIG.

Sewing outfit! l is located on the side of the sewing machine 3 which is horizontally movable on the machine frame 2, and the bed 4 of this sewing machine 3, and whose lower surface is flush with or almost flush with the upper surface of the bed 4 of the sewing machine 3. A cloth mounting plate 8 rotatably provided on the machine frame 2 in such a manner that the cloth fj1. A cloth holding plate 9 is provided on the machine frame 2 above the N plate 8 so as to be vertically movable and freely rotatable.

The sewing machine 3 is moved horizontally by a motor 103, the needle 5 of the sewing machine 3 is moved up and down by a motor 105, and the presser foot 6 of the sewing machine 3 is moved horizontally by a motor 103.
is raised and lowered by a fluid pressure cylinder 106, the cloth placing plate 8 is rotated by a motor 108, and the cloth holding plate 9 is moved by a fluid pressure cylinder 10.
9 so that it can be raised and lowered.

Next, a sewing product to be sewn by the sewing device 1 will be described based on FIGS. 2 to 4.

FIG. 2 shows an air bag 31 for an automobile.

The sewing device 1 separates the front part 32 of the air bag 31 and the reinforcing cloth 33.

As shown in FIG. 4, it is sewn into a sewing shape 35 encircling a 3fi circle. Note that transition portions 35a are formed between the triple circles.

Returning to FIG. 1, the fluid pressure cylinders 106 and 109, which do not need to be linked to the movement of the needle 5 of the sewing machine 3 which operates at high speeds of 1200 to 1500 times per minute, are operated by a sequencer device with a long execution time. A motor 1 that is controlled and operates the hook 5 of the sewing machine 3 at high speed.
05 and the motor 103 that needs to be linked to its movement.
．． Motor 108 and also feed dog of sewing machine 3 (path shown)
The feed amount changing device (path shown) is controlled by a microcomputer 12 which has a short execution time. In addition,
The sequencer device and the microcomputer 12 are connected via an interface 13.

In the above, the front cloth 32 and the reinforcing cloth 33 held between the cloth placing plate 8 and the cloth holding plate 9 are rotated intermittently at a predetermined speed while sewing the transition portion 35a. By horizontally moving the sewing machine 3 intermittently and positioning the sewing parts of the front cloth 32 and the reinforcing cloth 33 below the needle 5 of the sewing machine 3, sewing is performed in an 8-sewn shape 35 as shown in FIG. It will be done.

It goes without saying that the front cloth 32 and the reinforcing cloth 33 are held and released by raising and lowering the cloth holding plate 9, and the front cloth 32 and the reinforcing cloth 33 are held and released by raising and lowering the presser foot 6. do not have.

Note that either the sewing machine 3 or the cloth placement plate 8 may be configured to move horizontally, so the sewing device 1 can be connected to the sewing machine 3 installed in the 41st frame 1 and the bed 4 of this sewing machine 3. A cloth mount is rotatably and horizontally movable provided on the machine frame so that it is located laterally and its lower surface is flush or almost flush with the upper surface of the belt 4 of the sewing machine 3. A cloth holding plate 9 is provided on the cloth mounting plate 8 so as to be movable up and down, and a fluid pressure cylinder 109 of the cloth holding plate 9 is provided.
The fluid pressure cylinder 106 of the presser foot 6 is connected to a sequencer device,
The motor 108 of the cloth placing plate 8 and the horizontal movement device of the cloth placing plate 8 may be controlled by the microcomputer 12 (Effects of the Invention) According to the present invention, with the above-described configuration, This provides the following effects.

There is no need to synchronize with the needle movement of a sewing machine that operates at high speed.
The lifting device for the presser foot and the lifting device for the cloth holding plate are controlled by a sequencer that takes a long time to run, and the rotation device for the cloth mounting plate and the horizontal movement of the sewing machine need to be linked with the movement of the needle of the sewing machine, which operates at high speed. Since the device is controlled by a microcomputer with a short execution time, operation is reliable.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a system diagram, FIG. 2 is a partially exploded perspective view of an automobile airbag, and FIG. 3 is an enlarged sectional view taken along the line m-m in FIG. 2. FIG. 4 is a sectional view taken along the line IV-TV in FIG. 3. 1...Sewing device, 2...Machine frame, 3...Sewing machine, 4
... Bed, 5... Needle, 6... Presser foot, 8...
Cloth tx, Wl board, 9...Cloth holding plate, device,...Sequencer device, 2...Microcomputer, 103...Motor 105...Motor 108...Fluid pressure cylinder, 108...・Motor 109...Fluid pressure Schilling patent applicant Jaguar Co., Ltd. agent
Person Patent Attorney Tetsuo Onishi Figure 1 Figure 3 Figure 1] Figure 2 Figure 4

Claims (1)

[Scope of Claims] 1. A sewing machine that is horizontally movable on a machine frame, and a sewing machine that is positioned to the side of the bed of the sewing machine, and whose lower surface is flush with or almost flush with the upper surface of the bed of the sewing machine. A sewing device having a cloth placing plate rotatably provided on a machine frame so as to be rotatable, and a cloth holding plate provided on the machine frame above the cloth placing plate so as to be vertically movable and freely rotatable. The control device includes a sequencer that controls a lifting device for a cloth holding plate, a lifting device for a sewing machine's presser foot, and a microcomputer that controls a rotating device for the cloth mounting plate and a horizontal moving device for the sewing machine. A control device for a sewing device comprising: 2. A sewing machine installed in the machine frame, and a rotatable machine mounted on the machine frame so as to be located to the side of the bed of the sewing machine and with its lower surface flush or almost flush with the top surface of the bed of the sewing machine. A control device for a sewing device includes a horizontally movable cloth placing plate and a cloth holding plate provided on the cloth holding plate so as to be vertically movable. A control device for a sewing machine, comprising: a sequencer for controlling a lifting device for a sewing machine, a lifting device for a presser foot of a sewing machine, and a microcomputer for controlling a rotation device for the cloth placement plate and a horizontal movement device for the cloth placement plate.