JPH05131069A - Starting device for sewing machine - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a sewing machine starting device that simplifies the operation at the time of starting the sewing machine and improves the productivity during sewing. [Structure] A cassette holder for fixing the mounted cassette to a sewing machine, a cassette identification sensor attached to the cassette holder, and a switch means for moving the cassette holder. When the cassette holder is moved and the cassette is fixed by operating the switch means, the start of the sewing machine is controlled according to the signal from the cassette identification sensor.
When the cassette presser is fixed to the cassette by operating the start switch or the presser switch, the sewing machine can be started by the signal of the cassette identification sensor, so that the start of the sewing machine can be completed by one switch operation. The productivity at the time of sewing can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a starting device for a sewing machine, and more particularly to a starting device for a sewing machine in which a cassette holding a cloth is attached to the sewing machine and the cassette and the sewing machine are moved relatively to perform sewing.

[0002]

2. Description of the Related Art Conventionally, there has been known an electronic cycle sewing machine in which a cassette holding a cloth is attached to a sewing machine to perform sewing. In this electronic cycle sewing machine, after the sewing machine receives the cassette, the data stored in advance in a memory such as a floppy disk is read out, and the cassette is moved in the X and Y directions to sew various patterns such as complicated sewing lines and embroidery. I'm doing it. In such an electronic cycle sewing machine, since the sewing data (sewing pattern) can be arbitrarily changed by replacing the cassette, it is possible to sew multiple processes randomly at once and improve the productivity during sewing. ..

[0003]

When activating such a sewing machine, normally, after mounting the sewing machine on the cassette and operating the presser switch to lower the cassette presser, it is confirmed that the cloth is set in the cassette. After that, press the start switch to start sewing. Therefore, in the conventional device,
Since it was necessary to operate the two switches, the presser switch and the start switch, in one sewing operation, productivity at the time of sewing deteriorated.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned conventional problems, and to provide a sewing machine starting device which simplifies the operation at the time of starting the sewing machine and improves the productivity at the time of sewing. ..

[0005]

In order to solve this problem, the present invention relates to a sewing machine starting device for sewing by mounting a cassette for holding cloth on a sewing machine and moving the cassette and the sewing machine relative to each other. , A cassette presser for moving and fixing the cassette to the sewing machine, a cassette identification sensor attached to the cassette presser, and a switch means for moving the cassette presser are provided, and the cassette presser is moved by operating the switch means. When the cassette is fixed by using the cassette, a configuration is adopted in which the start of the sewing machine is controlled according to the signal from the cassette identification sensor.

[0006]

In this structure, when the cassette holder moves and the cassette is fixed, the start of the sewing machine is controlled according to the signal from the cassette identification sensor, and either the start switch or the presser switch is operated. As a result, when the cassette holder is fixed to the cassette, the sewing machine can be started by the signal of the cassette identification sensor, so that the starting of the sewing machine can be completed by one switch operation, and the productivity at the time of sewing the sewing machine is improved. be able to.

In this case, a cloth detection sensor for detecting cloth in the cassette is further provided so that the sewing machine is activated only when it is identified that the cassette with cloth is attached to the sewing machine. With such a structure, it is possible to prevent empty sewing of the sewing machine.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the drawings.

FIG. 1 shows an external view of a sewing machine according to the present invention, in particular, an electronic cycle sewing machine. In FIG. 1, the reference numeral 1 designates a sewing machine head, and the sewing machine head 1 detects cloth. The sensor 2 is attached. A cassette 3 is mounted below the sewing machine head 1, and this cassette is fixed to the sewing machine by a cassette presser 4 which is lowered by a cassette pressing switch 5 when mounted on the sewing machine. The reference numeral 6 is a sewing machine starting switch.

FIG. 2 shows the control mechanism of the sewing machine in the form of a block diagram, in which the cassette pressing switch described above is indicated by reference numeral 21, and the sewing machine starting switch is indicated by 22. By operating the cassette presser switch 21, the presser drive unit 26 is driven via the control unit 25 to lower the cassette presser 4 and the cassette 3 mounted on the sewing machine can be fixed to the sewing machine.

When the start switch 22 is operated,
The presser drive unit 26 can be driven, and the sewing machine motor drive unit 27 can operate the motor 27 ′ to start the sewing machine. When the sewing machine is activated, the X-axis motor 28 'and the Y-axis motor 29' are driven via the X-axis motor drive unit 28 and the Y-axis motor drive unit 29, respectively, and the cassette 3 can be moved in the X and Y axis directions. .. The movement of the cassette is performed according to the sewing pattern by reading the sewing pattern stored in the floppy disk 24 'through the floppy device 24. The control unit 25
The other drive unit 30 is controlled through the other switch 23 to perform various controls regarding sewing of the sewing machine.

Further, in the embodiment of the present invention, the cassette identification sensor 20 for identifying the cassette is provided to identify the cassette mounted on the sewing machine. This cassette identification sensor is composed of two sensors 20a and 20b attached to the cassette retainer 4 as shown in FIG. 3, and the reflector plate 3 attached to the frame 3a of the cassette.
The cassette is identified by detecting the light from 2. With this cassette identification sensor 20, it is possible to further identify the type of cassette and whether or not the cassette is attached to the sewing machine according to the signals from the sensors 20a and 20b as shown in FIG.

In such a structure, the cassette 3 is mounted on the sewing machine and the start switch 22 or the presser switch 2 is attached.
When 1 is operated, the presser drive unit 26 is driven and the cassette presser 4 is lowered to fix the mounted cassette 3.
The operation at this time is shown in the form of a signal waveform diagram in the upper two parts of FIG.

When the cassette holder 4 fixes the cassette 3, the presence or absence of the cassette is detected by the signal from the cassette identification sensor 20, and when the correct cassette is mounted, the output is output as shown by the waveform of the third stage. A signal is obtained, and the sewing machine motor 28 'is driven in synchronization with the signal from this cassette identification sensor. As a result, the cassette moves in the X and Y axis directions in accordance with the sewing pattern and sewing is performed. As can be seen from FIG. 5A, the sewing machine can be started at a time Ta corresponding to the time when the cassette presser descends from the time when either the start switch or the presser switch is operated. Conventionally, as shown in FIG. 5B, the presser switch 21 is operated to lower the cassette presser, and then the starter switch 22 is operated to start the sewing machine motor. Is required, and from the first switch operation, T
It can be understood that the sewing machine can be started only after the time of b has elapsed, and that the starting time is considerably shortened by the present invention.

Further, the sewing machine can be started only when the cloth detection sensor 2 detects the cloth in the cassette through the cloth detection slit 3b formed in the cassette 3. This can prevent empty sewing of the sewing machine.

Furthermore, a mode in which the starting state of the sewing machine is set by a dip switch or the like and the cassette pressing switch is operated and then the sewing machine is automatically started as described above,
It is also possible to select the mode in which the activation is performed only by the activation switch as in the conventional case.

[0017]

As described above, according to the present invention, the cassette holder for fixing the mounted cassette to the sewing machine,
A cassette identification sensor attached to the cassette holder,
A switch means for moving the cassette presser is provided, and when the cassette presser moves and the cassette is fixed by operating the switch means, the start-up of the sewing machine is controlled according to the signal of the cassette identification sensor. Since the sewing machine can be started by the signal of the cassette identification sensor when the cassette holder is fixed by the switch operation, the productivity at the time of sewing the sewing machine can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a sewing machine.

FIG. 2 is a block diagram showing a control mechanism of a sewing machine.

FIG. 3 is an explanatory diagram showing a configuration of a cassette identification sensor.

FIG. 4 is a table showing a cassette identification state according to an output signal of a cassette identification sensor.

5A is a signal waveform diagram showing a starting state of a sewing machine according to the present invention, and FIG. 5B is a signal waveform diagram showing a starting state of a conventional sewing machine.

[Explanation of symbols]

 2 Cloth detection sensor 3 Cassette 4 Cassette presser 5 Cassette presser switch 6 Start switch

Claims (4)

[Claims] 1. A starting device for a sewing machine, wherein a cassette for holding cloth is attached to a sewing machine and sewing is performed by moving the cassette and the sewing machine relative to each other, and a cassette retainer for moving and fixing the cassette to the sewing machine. A cassette identification sensor attached to the presser foot and a switch means for moving the cassette presser are provided, and when the cassette presser moves and the cassette is fixed by operating the switch means, the sewing machine is started according to the signal of the cassette identification sensor. A sewing machine starter characterized by controlling. 2. The sewing machine starting device according to claim 1, wherein the sewing machine is started only when the cassette identification sensor identifies that the cassette is mounted. 3. A cloth detection sensor for detecting cloth in the cassette is further provided, and the sewing machine is activated only when a cassette with cloth is attached to the sewing machine in accordance with signals from the cassette identification sensor and the cloth detection sensor. The starting device for the sewing machine according to claim 1 or 2. 4. The switch means is a sewing machine starting switch or a presser switch.
The starting device for the sewing machine according to any one of 1 to 3.