Thread trimming and presser foot raising driving device of sewing machine

A driving device and presser foot lifting technology, applied in the field of sewing machines, can solve the problems of high installation time, large space occupation, unfavorable installation, etc., and achieve the effects of long service life, small space occupation and cost saving.

Active Publication Date: 2015-09-02
STRONG H MACHINERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a driving device for thread trimmer and presser foot lifter of a sewing machine, which solves the problem that the existing drive device for thread trimmer and presser foot lifter needs tw...

Method used

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  • Thread trimming and presser foot raising driving device of sewing machine
  • Thread trimming and presser foot raising driving device of sewing machine
  • Thread trimming and presser foot raising driving device of sewing machine

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Embodiment Construction

[0017] Attached below Figure 1-3 The thread trimmer driving device of the sewing machine according to the present invention will be described in detail below.

[0018] The thread trimming and presser foot lifting driving device of the sewing machine of the present invention is a stepping motor driving a fork mechanism and a cam to move.

[0019] The fork mechanism includes a shift lever 4, a fork lever 3, a slide bar 2, a return spring 8, at least two fixing rings 10,

[0020] One end of the driving rod 4 is fixed on the main shaft of the stepping motor, the other end of the driving rod 4 can extend into the fork rod 3 and move the fork rod 3, the fork rod 3 is fixed on the slide bar 2, and the slide rod 3 The rod 2 is located in the two fixed rings 10 and can slide in the fixed rings 10. The return spring 8 is sleeved on the slide bar 2. One end of the return spring 8 is fixedly connected with one of the fixed rings 10, and the other end of the return spring 8 is connected ...

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Abstract

The invention provides a thread trimming and presser foot raising driving device of a sewing machine. The technical problems that thread trimming, thread loosening and presser foot raising are implemented by two existing thread trimming and presser foot raising driving devices, the cost is high, occupied space is large, noises are large, mounting time is long, and mounting is not facilitated are solved. The thread trimming and presser foot raising driving device of the sewing machine comprises a stepping motor, a shifting fork mechanism and a cam, wherein the shifting fork mechanism comprises a shifting rod, a fork rod, a sliding rod and at least two fixing rings; one end of the shifting rod and the cam are fixed on a spindle of the stepping motor; the other end of the shifting fork can extend in the fork rod and drives the fork rod to move; the fork rod is fixed on the sliding rod; the sliding rod is positioned in the two fixing rings and can slide in the fixing rings; and a movement trace of the cam and a free end of a presser foot raising connecting rod of the sewing machine are intersected. A lower thread trimming device and a thread slacking device are driven to perform thread trimming, thread clamping and thread slacking through the shifting fork mechanism, and presser foot raising is implemented through the cam.

Description

technical field [0001] The invention relates to a driving device for thread trimmer and presser foot lifter in the field of sewing machines. Background technique [0002] Generally, the thread trimming and presser foot drive of the existing sewing machine is composed of two parts, one part is the lower thread trimmer drive, which generally uses a cylinder or an electromagnet to drive the lower thread trimmer device to trim the thread; the other part is the presser foot lifter drive, which generally uses a small The cylinder or small electromagnet drives the presser foot lifting device to move. Currently, there are two sets of driving devices, which are costly, take up a lot of space, are noisy, require a lot of man-hours for installation, and are unfavorable for installation. Contents of the invention [0003] The purpose of the present invention is to provide a driving device for thread trimmer and presser foot lifter of a sewing machine, which solves the problem that th...

Claims

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Application Information

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IPC IPC(8): D05B65/00D05B29/02D05B69/00
Inventor 姜进元
Owner STRONG H MACHINERY TECH
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