JPS5830076B2 - Information signal reading device for thread spool for sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thread spool adapted for use in so-called electronic sewing machines.

Sewing machines are electronically controlled and have a built-in microcomputer, which makes it possible to store and calculate not only sewing pattern signals but also various types of information, as well as adjusting the sewing machine's needle thread tension device, zigzag width, etc. according to desired sewing conditions and usage. There has been a demand for automatic adjustment in response to the properties of the thread.

The present invention has been developed in response to the above-mentioned demands, and includes a signal storage section for storing information about needle thread properties, such as thread thickness and material, in a format that can be read by an appropriate automatic reading means. maintain the information in a thread spool to be threaded, and transmit the information to the sewing machine when the thread spool is attached to the electronic sewing machine;
This was designed to improve the automatic control of electronic sewing machines.

One embodiment of the present invention will be described below with reference to the accompanying drawings. Figures 1a, b, and c show various thread spool bodies 2 around which thread 1 is wound, and the core tube 2a of the thread spool body 2 is made of paper. It is made of material such as wood, wood, or plastic material, and information regarding the sewing thread is printed in the form of a bar code on the exposed cylinder at the end of the core tube 2a or on the end surface of the thread spool body 2. Upper thread information signal carrying sections 3, 3a, and 3b (signal bodies) are provided, each of which includes a magnetic tape or the like on which information is magnetically stored.

Incidentally, the above-mentioned upper thread information signal carrying parts 3.3a and 3b may be constructed by providing a mechanical shape such as an unevenness or a notch at an appropriate position on the thread spool main body 2.

FIG. 2 shows that the needle thread information signal carrying sections 3, 3a, and 3b sequentially pull out thread spools or threads when the area of the finger holding section needs to be small due to a large amount of information regarding the needle thread. This shows an embodiment in which a portion 5 corresponding to the carrying portion is disposed in a case 4 that can be accommodated.

Furthermore, to explain a thread stand device as an example of a device for reading information into an electronic sewing machine by attaching the thread spool main body 2 to the sewing machine, in FIG. Figure 4 shows the state in which the first type A thread spool 2 is loosely inserted into the spool pin 7 and can freely rotate as the needle thread is consumed during operation of the sewing machine. When the A-type thread spool 2 is strongly pushed down, it is normally raised to the position shown in FIG. As a result, a horizontal annular groove 1 is formed on the outer surface of the operating body 9.
0 and the automatic clutch device 11 glue latch portion 12 are connected to the spring 1
The automatic clutch device 1 is engaged by the action of the automatic clutch device 1.
This shows that it is held until the release electromagnet 14 of No. 1 is energized.

In addition, when the thread spool 2 is pressed down (Fig. 5), the lower part of the thread spool 2 is frictionally engaged with a portion of the gradually increasing diameter taper (or elastic expansion part) of the spool pin 7, that is, the thread spool restraining portion γa. has been
Further, the signal wandering portion 3 is in a position where it can face or come into sliding contact with a signal reading head 15 disposed on the sewing machine main body side, and at the same time, the lowering of the operating body 9 turns on the start switch 16.

The motor 1 is input when the start switch 16 is turned on.
The spool pin 7 and the thread spool 2 are rotated at an appropriate speed by the spool pin 7, and this rotation causes the head 15 to start reading signals, and the read output is sent to the microcomputer section of the sewing machine, the automatic thread tension adjustment device, etc. At the stage when all the necessary signals sent as the required human power have been read, the motor IT is turned off by reading the end of the signal that has reached the position of the head 15, and the solenoid part 14 of the automatic clutch device 11 is set to release the clutch. A temporary input is made, as a result of which the thread stand device is activated by spring 8.
The state shown in FIG. 4 is restored by the action of.

In the state shown in FIG. 5, that is, if the control circuit is configured so that the sewing machine operation is suspended during the reading operation (details are omitted), the suspension is also released upon the return. shall be.

Incidentally, since information reading from the signal sections 3 to 3b can be carried out by appropriately moving the reading head 15 within a certain range, the rotation of the thread spool may not be motorized as described above. This can be done reliably no matter how many people handle it, but it is also possible to rotate the thread spool by manually pulling out the thread by an appropriate amount at an appropriate speed.
In that case, the reading device can be placed in a position facing the signal section 3 or 3b simply by mounting the type a or type C thread spool on a simple spool pin fixedly set on the sewing machine. It may be provided with a reading head, and in the case of the type B or the type shown in Fig. 2, the thread spool or the reading head is moved in the vertical direction for reading.

According to the present invention as described above, it is possible to automatically control the sewing machine by reading the information carried by the thread spool, such as the thickness and material of the thread being used, when the thread spool is used.
This invention is highly effective industrially, as it can greatly contribute to improving the functionality of electronic sewing machines.

[Brief explanation of drawings]

Figures 1 a, b, and c are perspective views showing various thread spools, Figure 2 is a perspective view of a case that accommodates the thread spools, and Figure 3 is a perspective view showing the relationship between the thread spools and the thread spools. FIG. 4 is a partially cutaway perspective view of the thread stand device that allows the electronic sewing machine to read information on the thread spool, showing a state in which the thread spool can be rotated freely, and FIG. This shows the state in which the clutch is pressed down. In the figure, 1 is a thread, 2 is a thread spool body, and 3 to 3b are signal sum holding parts.

Claims (1)

[Claims] 1. A spool pin attached to the sewing machine body for reading needle thread information signals, and a needle thread information signal carrying information such as material, thickness, coating, etc. of the sewing thread on the side of the core tube inserted into the spool pin. a signal reading head disposed opposite to the upper thread information signal carrying portion of the sewing machine thread spool; and a signal reading head and the sewing machine thread for reading the upper thread information. and a device for relatively moving either one of the pieces within the reading range of the upper thread information.