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Cloth cutting device of hole stitching machine

A technology for sewing machines and buttonholes, which is applied in the direction of sewing machine control devices, sewing machine components, and program-controlled sewing machines. Effects of misalignment, relaxation of contact pressure, and prevention of mutual damage

Active Publication Date: 2011-04-20
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will cause excessive impact on the cutter, causing damage to the cutter and shortening the life of the cutter or the cutter holder.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Cloth cutting device of hole stitching machine
  • Cloth cutting device of hole stitching machine
  • Cloth cutting device of hole stitching machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] (Overall structure of buttonhole overlock sewing machine with round head)

[0038] The cloth cutting device 30 in the embodiment of the present invention will be described with reference to the drawings.

[0039] Such as figure 1 As shown, there is a cloth cutting device 30 (in figure 2 The ball head buttonhole overlock sewing machine 1 shown in the figure) has a basic structure as a sewing machine for ball head buttonhole overlock sewing. The buttonhole sewing machine 1 has a sewing machine frame 5 and a sewing machine table on which the sewing machine frame 5 is placed. The sewing machine frame 5 has: a base part 2 formed in a substantially rectangular box shape; a longitudinal body part 3 provided on the base the rear part of the body part 2;

[0040] In addition, a needle bar 10 is provided at the front end of the arm 4, which extends downward, and has a sewing needle 6 at the lower end, which can move up and down and swing left and right. And, in the base part ...

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PUM

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Abstract

The invention relates to a cloth cutting device of hole stitching machines, wherein period time is not lost and right pressing force is easily to be set.The cloth cutting device (30) comprises a knife (32), a knife receiver (31), a moving mechanism (35) which moves the knife (32) or the knife receiver (31), a pulse motor (34) which serves as a drive source of the movement of the knife or the knife receiver, a rotation amount detector (55) which detects a rotation amount of the pulse motor, and a controller (50) which controls the pulse motor.; The controller executes a control to switch the movement of the knife or the knife receiver to be low speed on its way, and includes a cutting control means (50c) which controls the pulse motor to stop driving if a deviation determining means determines that the deviation of the pulse motor reaches the set value, and a current control means (50c) which limits, during the low-speed movement, a current value applied to the pulse motor to be lower than that during a high-speed movement.

Description

technical field [0001] The invention relates to a cloth cutting device of a buttonhole overlock sewing machine, which forms a buttonhole on an object to be sewn. Background technique [0002] The buttonhole sewing machine with round head has: a sewing machine driving mechanism, which moves the needle bar up and down and swings left and right, and at the same time makes the looper mechanism and the needle bar synchronously operate; the cloth feeding mechanism, which clamps the cloth, forward and backward / left and right a directional feed; and a rotation mechanism for rotating the needle bar and looper mechanism. The button overlock sewing machine with a round head has a cloth cutting mechanism, which cuts the cloth by pressing the cutter and the cutter seat. The cloth cutting mechanism is activated before or after the overlock stitch is formed, and a buttonhole can be formed inside the overlock stitch part. . [0003] In addition, it is known that, in the current buttonhole...

Claims

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Application Information

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IPC IPC(8): D05B37/02D05B19/12D05B69/36
CPCD05B19/12D05B3/06D05B37/00D05B3/08
Inventor 洼田次勇
Owner JUKI CORP
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