JPH01277592A - Emergency stopping device for automatic sewing machine - Google Patents

Abstract

PURPOSE:To allow a sewing machine to stop quickly and adequately in emergency, by having operation switches other than an emergency switch also function as an emergency switch during the operation of the sewing machine. CONSTITUTION:Operation switches 5-8, 10 and 11, a sewing mechanism, a driving device, and control devices 13 and 14 are provided, and after preliminary work for start-up by using said operation switches, a specified sequential operation is started on receiving an ON signal of the start-up switch 6. The emergency stop device 5 functions to stop a series of operations. After starting up the sewing machine and turning the start-up switch 6 OFF, the control devices 13 and 14 control the emergency stop device 5 to work when operating any of said switches, so that the sewing machine is allowed to stop quickly and adequately in an emergency.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a so-called automatic sewing machine such as a sewing machine with a skirt zipper, particularly a sewing machine with an emergency stop that can easily make an emergency stop while the sewing machine is running. It is related to.

[Conventional technology]

The conventional technique will be explained based on FIG.

The figure is a perspective view of a sewing machine for sewing skirts, pants, etc. with zippers, which belongs to a so-called start-up sewing machine that automatically performs certain operations after turning on a start switch.

In the figure, 1 is a sewing machine head having a sewing mechanism; 2 is a sewing machine head having a sewing mechanism;
2a is a holding device for the object to be sewn, and 2a is a setting table.

2b is a setting device, 3 is an X-Y feed mechanism, 4 is an operation display panel, 5 is an emergency stop switch, and 6 is a start switch.

Furthermore, numerals 7 and 8 are pedals for advancing and retracting, respectively, a sequence of preparatory operations before starting up the sewing machine, such as setting an object to be sewn.

Note that 9 is a power switch box.

For example, a skirt and a zipper to be sewn thereon are set on the setting table 2a, and after the setting device 2b descends and fixes them in a predetermined position, they are inserted and fixed into the presser device 2 connected to the X-Y mechanism 3. be done.

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

During the sewing operation, the sewing machine automatically detects a problem such as a skipped thread, and the sewing operation is stopped by an output signal from the control means.

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

For example, when sewing a zipper to a predetermined location on a skirt, if the zipper is sewn together with the fly fabric, the sewing machine itself will be damaged.

Since this is not detected, if you leave it as is, sewing will continue as it is.

Therefore, the operator should monitor the sewing situation as appropriate, and if he or she discovers a sewing defect as described above, he or she should immediately turn on the emergency stop switch 5 to stop the subsequent sI sewing operation and perform proper sewing work. will be restarted.

[Problem to be solved by the invention]

However, in the above-mentioned conventional sewing machine with an emergency stop, when a situation requiring an emergency stop occurs, the user must first find the emergency stop switch 5 and operate it, which is easy to see. However, in an emergency that requires an emergency stop, operators tend to get flustered and take the time to check the position of the emergency stop switch, or operate other operation switches with the intention of using the emergency stop switch. There is a problem in that the emergency stop cannot be performed properly and quickly in an emergency due to delays in the emergency stop process, erroneous operations, etc.

[Means for solving problems]

In a sewing machine that automatically performs certain operations, such as attaching a zipper, after starting, the emergency stop means is actuated by the operation of the control means, no matter which switch is operated. This is an attempt to solve conventional problems.

[For production]

In this invention, after the sewing machine is started, the various operation switches such as the start switch and the sequence advance pedal operate the emergency stop means while the signal circuits to the control means for realizing the respective operations are closed. Since the signal circuit to the control means is opened, the emergency stop means will be activated by operating any of the operation switches after the sewing machine has started, making it possible to quickly and properly stop the sewing machine in an emergency. becomes.

[Embodiments of the invention]

The present invention will be described in detail based on the drawings. In addition,
The same parts as in the conventional example are given the same reference numerals, and redundant explanation will be omitted.

1 to 3 are views showing one embodiment of the sewing machine according to the present invention, in which FIG. 1 is an external perspective view, FIG. 2 is a block diagram showing an emergency stop means, and FIG. 3 is a diagram showing an embodiment of the sewing machine according to the present invention. 3 is a flowchart showing the operating order of the 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 conventional example described above, and therefore a description thereof will be omitted.

In FIG. 2 showing the configuration of the emergency stop means, each operation switch group of an emergency stop switch 5, a start switch 6, a pedal 7°8 restart switch 10, and a reset switch 11 is operated as a control means via an I10 device 12. C.P.U.I.
A signal path is formed between the two.

Further, the spindle control circuit 16 and the spindle 16a are connected to the CPU 13 via the r10 device 15.

Similarly, the feed mechanism control circuit 3a and the feed mechanism 3 also have I1
0 device 15 to the CPU 13 .

14 is a ROM that stores sewing data and other control programs.

Before starting the sewing machine, each of the above-mentioned operation switches only controls the corresponding operation by the CPU 13, which is a control means.
This will be realized through.

For example, when the start switch 6 is turned on, a signal is output to the CPU 13, and the CPU 13 outputs a signal to the spindle control circuit 16.
A drive control signal is output to 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 the sewing machine is started, each of the operation switches described above is configured to perform only an emergency stop operation via the CPU 13, which is a control means.

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 then turned off, the CPU 13 recognizes this signal as an emergency stop signal, and the spindle control circuit 16 and feed mechanism control circuit As a result of outputting the drive stop signal to the sewing machine 3a, the main shaft 16a and the feed mechanism 3 stop driving, and the sewing operation is interrupted.

In the above, the CPU 13 serving as a control means, the ROM 12 storing an emergency stop program, the spindle control circuit 16,
The feed control circuit 38 and the like constitute an emergency stop means.

Next, the operation of this embodiment will be explained based on the flowchart shown in FIG.

In this flow explanation, for ease of explanation, the operation switch is the start switch for starting the sequence operation of the sewing machine, and the operation switch at the front of the sewing machine.
The following describes three switches, the first and second switches, which perform predetermined preparatory operations.

First, the power is turned on and initial settings are made, and then the first and second switches are operated to operate the operating mechanisms corresponding to the respective switches to perform preparatory processing before starting sewing.

Next, when the start switch 6 is turned on, the sewing machine starts. After the start switch 6 is turned off, each operating switch only functions as a non-stop switch. That is, when the start switch is turned on again, an emergency stop process is performed, and either the cause of the trouble in sewing is corrected and the restart switch is turned on to resume sewing work, or the reset switch is turned on and the A1 sewing work is restarted from the beginning.

I'll have to fix it.

While the sewing machine is running, each of the first and second switches also functions only as an emergency stop switch, and when each switch is turned on, an emergency stop process is performed and the sewing operation is stopped.From then on, when the restart switch is turned on, the sewing operation is stopped. Should I resume sewing?
Turning on the reset switch will start over from the beginning. Unless the emergency stop switch or any other operation switch is turned on during startup of the sewing machine, the sewing machine automatically continues the predetermined sewing operation and completes the predetermined cycle.

〔Effect of the invention〕

The present invention is an automatic sewing machine that starts in response to an ON signal from a start switch and performs a predetermined sewing operation. If an abnormality occurs during sewing work, it is possible to quickly and appropriately perform emergency stop processing.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a sewing machine with a zipper, FIG. 2 is a block diagram of an emergency stop means, and FIG. 3 is a flow chart showing the operation of the sewing machine according to the present invention. In the figure: 1...Sewing machine head 3...X-Y feed mechanism 5...Emergency stop switch 6...Start switch 7...Forward pedal 8...Backward pedal 3a...Feed Mechanism control circuit 16...Spindle control circuit Fig. 1

Claims (1)

[Scope of Claims] The sewing machine includes operation switches, a sewing mechanism, a driving means, and a control means, and after a preparatory operation before starting the sewing machine is performed by operating the operation switches, the sewing machine starts upon receiving an ON signal from the start switch. However, in an automatic sewing machine which performs a predetermined sequence of operations, there is an emergency stop means that acts to stop the series of operations, and after the sewing machine is started, the sewing machine can also be operated by operating any of the switches after turning off the starting switch. An emergency stop device for an automatic sewing machine, comprising a control means for activating the emergency stop means.