JP2624326B2 - Emergency stop processing device for holing machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an emergency stop processing device for a holing machine.

[Conventional technology]

2. Description of the Related Art Conventionally, an emergency stop of a boring machine is simply performed by manually turning off a power switch of the sewing machine and operating a brake to stop a sewing machine motor.

[Problems to be solved by the invention]

However, there are two types of single button sewing and double sewing in buttonhole holing. In the case of double sewing, when sewing is restarted, the sewing machine presser foot is positioned at the second home position in the sewing machine cycle, that is, the second cycle sewing starts. If the machine is not restarted from the position outside the position, the sewing will be performed in the single sewing specification.

Therefore, for example, when the sewing machine stops in the first cycle of the double sewing specifications of the hole hoist sewing machine, the re-sewing process requires many operations, and it is difficult to maintain the sewing quality.

That is, when performing the desired double stitching from the middle of the sewing after the emergency stop, the knife stop lever is pushed in the first cycle to prevent the knife from dropping, and after the first cycle, the single and double stitching is performed. A troublesome operation of setting the changeover switch to the double stitching specification and restarting it is necessary.

If such an operation is not performed, when an emergency stop is performed in the double stitching specification, sewing may be performed in the single stitching specification after restart.

The present invention has been made to eliminate such disadvantages.

[Means for solving the problem]

An emergency stop processing device for a buttonhole sewing machine according to the present invention includes a buttonhole sewing machine that sew a double buttonhole, an emergency stop switch that stops the sewing machine in the middle of the buttonhole sewing, and an emergency stop switch that causes the machine to perform an emergency stop. When stopped
Detecting means for detecting whether or not the presser foot is at the home position before the first sewing in the sewing machine cycle or between the home positions after the start of the first sewing and before the start of the second sewing; In the case of, means for turning on the starting magnet until the presser foot deviates from the home position for the second time, and detecting means for detecting whether or not the presser foot is at the home position for the second time when the sewing machine is emergency stopped by the emergency stop switch Means for turning on the activation magnet until the presser foot is out of the home position when detecting that the work clamp is at the home position for the second time.

[Action]

In the emergency stop processing apparatus for a holing machine according to the present invention, when the emergency stopped sewing machine is restarted, the sewing machine is controlled so that double sewing is automatically started.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, 1 is operated by a start pedal.
Emergency stop switch of the buttonhole sewing machine that sew double buttonhole. When this emergency stop switch 1 is turned on, the detection means detects whether the sewing specification is single sewing specification. Detecting means for detecting whether or not the presser foot of the sewing machine is at the home position, that is, the start position of each sewing cycle;
When the starting magnet 4 is not at the home position, the starting magnet 4 is rotated until the sewing machine reaches a predetermined high-speed rotation at which sewing can be performed, for example, for 300 ms.
Indicates the means for N.

In the emergency stop processing device for a holing machine according to the present invention, when the emergency stop switch 1 is turned on, it is determined whether the presser foot of the sewing machine is located at the first origin position or between the first and second origin positions in the sewing machine cycle. A detecting means 6 for detecting whether or not the starting magnet 4 is turned on until the presser foot reaches the second origin position when the detecting means 6 is YES;
When the emergency stop switch 1 is turned ON in the double sewing specification, the detecting means 8 for detecting whether the presser foot of the sewing machine is at the second home position, and the second presser foot at the home position are provided. Means 9 for turning on the starting magnet 4 until the presser foot deviates from the origin position when this is detected.

10 is a CPU, 11 is a ROM, 12 is a RAM, 13 is a sewing machine motor control circuit controlled by the CPU 10, 14 is a clutch, 15 is a brake, and 16 is a starting magnet control circuit.

Since the emergency stop processing device for a holing machine according to the present invention is configured as described above, when the sewing machine is restarted after an emergency stop, as shown in the flowchart of FIG. Startup is automatically controlled,
Therefore, at the time of restart, the double stitching can be reliably started regardless of the emergency stop position without manually performing a troublesome operation.

In the above-described embodiment, when the machine is restarted after the emergency stop, a gap may be formed in the seam. Therefore, in another embodiment of the present invention, XY for driving the presser foot of the sewing machine in the return direction is used.
An automatic mechanism such as a motor or a manual handle 17 is provided, and as shown in the flowchart of FIG. 3, the presser foot is moved in the returning direction to return to the original position, and then processed as shown in the flowchart of FIG.

In this way, sewing can be performed without forming a gap in the seam.

〔The invention's effect〕

As described above, according to the emergency stop processing device for a holing machine according to the present invention, when the sewing machine is restarted after an emergency stop, the sewing is surely performed by the double stitch regardless of the emergency stop position. There are great benefits.

[Brief description of the drawings]

FIG. 1 is a block diagram of the apparatus of the present invention, and FIGS. 2 and 3 are flowcharts each for explaining the apparatus. 1 Emergency stop switch, 2, 3, 5, 6, 7, 8, 9 ... Means 4,
…… Start-up magnet, 10 …… CPU, 11 …… ROM, 12 …… RA
M, 13 ... sewing machine motor control circuit, 14 ... clutch, 15
…… Brake, 16 …… Start magnet control circuit, 17 ……
Automatic mechanism or manual handle.

Claims (2)

(57) [Claims] 1. An overlock sewing machine for sewing a double overhole.
An emergency stop switch that makes an emergency stop of the sewing machine in the middle of buttonhole sewing, and when the sewing machine is stopped by the emergency stop switch, the work clamp presses the home position before starting the first sewing in the sewing machine cycle or starts the first sewing. After and 2
Detecting means for detecting whether it is between the origin positions before the start of the second sewing, means for turning on the starting magnet until the work clamp is out of the second origin position when this detecting means is YES, and an emergency stop switch. Detecting means for detecting whether the presser foot is at the second home position when the sewing machine stops in an emergency, and starting magnet until it comes out of the home position when detecting that the presser foot is at the second home position. An emergency stop processing device for a holing machine, comprising: means for turning on. 2. The emergency stop processing device for a holing machine according to claim 1, further comprising a return direction driving mechanism for moving the work clamp in the return direction.