JPH0712393B2 - Emergency stop device of automatic sewing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called automatic sewing machine such as a sewing machine with a skirt zipper, and more particularly to a sewing machine with an emergency stop capable of easily making an emergency stop during driving of the sewing machine. Is.

[Conventional technology]

 The conventional technique will be described with reference to FIG.

The figure is an external perspective view of a zipper-attached sewing machine such as a skirt and pants belonging to a so-called start-up sewing machine that automatically performs a certain operation after turning on a start switch.

In the figure, 1 is a sewing machine head having a sewing mechanism, 2
Is a pressing device for the article to be sewn, 2a is a setting table, 2b is a setting device, 3 is an XY feed mechanism, 4 is an operation display panel, 5 is an emergency stop switch, and 6 is an activation switch.

Further, 7 and 8 are pedals for advancing and retreating respectively in a preparatory operation sequence before starting the sewing machine such as a set of a sewing object.

Reference numeral 9 is a power switch box.

For example, a skirt and a zipper for sewing to the skirt are set on the setting table 2a, and the setting device 2b descends to fix them at a predetermined position, and then is inserted and fixed to the holding device 2 connected to the XY mechanism 3. It

On the display panel 4, when the specification values required for the sewing operation are input to the control means (not shown) and the start switch 6 is turned on, the sewing machine starts to start and a predetermined sewing operation (with zipper) is automatically performed.

During the sewing operation, for example, a malfunction such as a thread break jump is automatically detected by the sewing machine, and the sewing operation is stopped by the output signal from the control means.

On the other hand, if a problem occurs that cannot be automatically detected by the sewing machine, the operator visually checks this and turns on the emergency stop switch to stop the sewing operation and the like.

For example, if a situation occurs where the zipper is sewn together with its front cloth when the zipper is sewn in place on the skirt, the sewing machine itself does not detect this, and if left alone, it will be sewn as it is. Will progress.

Therefore, the operator appropriately watches the sewing situation, and immediately turns on the emergency stop switch 5 when the above-mentioned sewing failure is found, thereby stopping the subsequent sewing operation and performing an appropriate sewing operation. It will be restarted.

[Problems to be Solved by the Invention]

However, in the case of the conventional sewing machine with an emergency stop, when a situation in which an emergency stop is required occurs, the emergency stop switch 5 must first be found and operated. This may seem easy at first glance, but in an emergency that requires an emergency stop, the operator is apt to panic, and it takes time to confirm the position of the emergency stop switch, or another operation switch is intended as an emergency stop switch. There is a problem that the emergency stop cannot be properly and swiftly performed in an emergency due to a delay in the emergency stop process such as a mistaken operation of the machine or a mistaken operation.

[Means for solving problems]

According to the present invention, the emergency stop means is activated by the operation of the control means regardless of which switch is operated in a sewing machine which automatically performs a certain operation such as zipper attachment after the start. It tries to solve the problem.

[Action]

In the present invention, various operation switches such as a start switch and a sequence forward pedal operate the emergency stop means while the signal circuit to the control means for realizing the corresponding operation is closed after the sewing machine is started. Since the signal circuit to the control means for opening the sewing machine is opened, the emergency stop means operates even after operating the sewing machine after operating the sewing machine, so that the sewing machine can be stopped quickly and properly in an emergency. Becomes

Embodiments of the Invention Embodiments of the present invention will be described with reference to the drawings. The same parts as those in the conventional example are designated by the same reference numerals, and duplicate description will be omitted.

1 to 3 are views showing an embodiment of a sewing machine according to the present invention. FIG. 1 is an external perspective view, FIG. 2 is a block diagram showing an emergency stop means, and FIG. It is a flowchart which shows the operation sequence of a sewing machine.

As shown in FIG. 1, the external structure of the sewing machine according to this embodiment is exactly the same as that of the above-mentioned conventional example, and therefore its explanation is omitted.

In FIG. 2 showing the configuration of the emergency stop means, each operation switch group of the emergency stop switch 5, the start switch 6, the pedals 7, 8 restart switch 10, and the reset switch 11 is
A signal path is formed between the I / O device 12 and the CPU 13 as a control means.

Further, the spindle control circuit 16 and the spindle 16a are connected to the CPU 13 via the I / O device 15. Similarly, the feed mechanism control circuit 3
The a and the feeding mechanism 3 are also connected to the CPU 13 via the I / O device 15.

14 is an RO that stores sewing data and other control programs
It is M.

Before the sewing machine is activated, each of the above-mentioned operation switches realizes only the operation corresponding to the operation switch via the CPU 13 as a control means.

For example, when the start switch 6 is turned on, a signal is output to the CPU 13, while a drive control signal is output from the CPU 13 to the spindle control circuit 16 and the feed mechanism control circuit 3a. As a result, the main shaft 16a and the feed mechanism 3 start driving, and the sewing operation automatically proceeds according to the set predetermined program. After starting the sewing machine, each of the above-mentioned operation switches is the CPU1 which is the control means for only the emergency stop operation.
It is supposed to be realized through 3.

For example, when the start switch 6 is turned on, a signal is output to the CPU 13, and when the start switch 6 is turned off thereafter, the CPU 13 recognizes this signal as an emergency stop signal at this point, and the spindle control circuit 16 and the feed mechanism control circuit are detected. As a result of outputting the drive stop signal to 3a, the main shaft 16a and the feed mechanism 3 stop their drive, and the sewing operation is interrupted.

In the above description, the CPU 13 as the control means, the ROM 12 for storing the emergency stop program, the spindle control circuit 16, the feed control circuit 3a, etc. constitute the emergency stop means.

Next, the operation of this embodiment will be described based on the flow chart shown in FIG.

In this flow explanation, the operation switch for facilitating the explanation is the start (start) switch for starting the sequence operation of the start sewing machine and the sewing machine before starting the sewing machine.
Three switches, a first switch and a second switch, which perform a predetermined preparation operation are described.

After the power is first turned on and initialization is performed, the operating mechanism corresponding to each switch is operated by operating the first and second switches to perform the preparation process before the start of sewing.

Then, when the start switch 6 is turned on, the sewing machine is activated. After that, after the start switch 6 is turned off, each operation switch has only the function as a non-stop switch. That is, when the start switch is turned on again, the emergency stop process is performed, and the cause of the sewing problem is corrected and the restart switch is turned on to restart the sewing work, or the reset switch is turned on to restart the sewing work from the beginning. Become.

While the sewing machine is running, each of the first and second switches also has a function only as an emergency stop switch, and the emergency stop processing is performed by turning on each switch to stop the sewing operation. After that, after the restart switch is turned on. Restart sewing,
Turning the reset switch on will restart the process from the beginning. Unless any of the emergency stop switch or any other operation switch is turned on during the start of the sewing machine, the sewing machine automatically continues the predetermined sewing operation and ends the predetermined cycle.

〔The invention's effect〕

According to the present invention, in an automatic sewing machine which receives a turn-on signal of the start switch and starts a predetermined sewing operation, the operation switches other than the emergency stop switch also have a function as the emergency stop switch during the start. When an abnormality occurs during the sewing work, it is possible to quickly and properly perform the emergency stop process.

[Brief description of drawings]

FIG. 1 is an external perspective view of a zipper-attached sewing machine, FIG. 2 is a block diagram of emergency stop means, and FIG. 3 is a flowchart showing the operation of the sewing machine according to the present invention. In the figure, 1 ... Sewing machine head 3 ... XY feed mechanism 5 ... Emergency stop switch 6 ... Start (start) switch 7 ... Forward pedal 8 ... Reverse gear 13 ... CPU (control means) 14 ... ROM (control means) 3a …… Feed mechanism control circuit 16 …… Spindle control circuit

Claims (1)

[Claims] 1. An operation switch, a sewing mechanism, a drive means, and a control means are provided, and after a preparatory operation before starting the sewing machine is performed by operating the operation switch, the sewing machine is started by receiving an ON signal of the start switch. In an automatic sewing machine that is designed to perform a predetermined sequence of operations, the emergency stop means that acts to stop a series of operations, and after starting the sewing machine, by operating either of the switches after turning off the start switch, An emergency stop device for an automatic sewing machine, which is provided with control means for operating the emergency stop means.