Thread cutting and presser foot lifting device of sewing machine and sewing machine

A presser foot lifter and sewing machine technology, applied in the field of sewing machine thread trimmer and presser foot lifter and sewing machine, to achieve the effects of reducing noise, increasing operability, and reducing driving sources

Active Publication Date: 2017-07-14
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the above-mentioned problems existing in the prior art, and provides a sewing machine thread trimming and presser foot lifting device and a sewing machine. The technical problem to be solved by the present invention is: how to reduce occupied space, reduce noise, simplify Guarantee the stable operation of the sewing machine

Method used

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  • Thread cutting and presser foot lifting device of sewing machine and sewing machine
  • Thread cutting and presser foot lifting device of sewing machine and sewing machine
  • Thread cutting and presser foot lifting device of sewing machine and sewing machine

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Embodiment Construction

[0031] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0032] like Figure 1-6 As shown, the present invention provides a sewing machine thread trimming and lifting device, including: a motor, the motor is a double-head motor 1, that is, both ends of the motor shaft extend out, respectively, the left motor shaft 2 and the right motor shaft 8 , and the action of the motor is controlled by the control box; it should be noted that the left motor shaft 2 and the right motor shaft 8 of the present invention are the same motor shaft or two motor shafts. The control box is mainly used to control the clockwise or counterclockwise rotation of the motor shaft of the motor and the rotation angle of the motor shaft to control the height of the presser foot, the time of thread trimming and...

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Abstract

The invention belongs to the technical field of sewing machines and relates to a thread cutting and presser foot lifting device of a sewing machine and the sewing machine. The thread cutting and presser foot lifting device of the sewing machine comprises a double-end motor, a thread cutting cam assembly and a presser foot lifting crank assembly, wherein the thread cutting cam assembly comprises a thread cutting cam arranged on a motor shaft at one end of the double-end motor; a movement groove is formed in the thread cutting cam; one end of a thread cutting crank is connected with the thread cutting cam through a connecting pin; the connecting pin is arranged in the movement groove of the thread cutting cam; the other end of the thread cutting crank is connected with a thread cutting shaft; the thread cutting shaft is connected with a thread cutting mechanism; the presser foot lifting crank assembly comprises a presser foot lifting crank arranged on a motor shaft at the other end of the double-end motor; an abutting part is arranged on the presser foot lifting crank; the abutting part abuts against an ejection rod of a presser foot lifting mechanism. According to the thread cutting and presser foot lifting device of the sewing machine, one driving source is used for controlling movement of the thread cutting mechanism and the presser foot lifting mechanism; the driving source is reduced so that the structure is simpler and an occupied space is simple; the thread cutting and presser foot lifting device is convenient to mount and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of sewing machines, and relates to a sewing machine thread trimming and lifting device and a sewing machine. Background technique [0002] At present, the thread trimming drive mechanism and the presser foot lifting mechanism on the lockstitch sewing machine are two mechanisms independent of each other. Wherein, the thread trimming drive mechanism for thread trimming and the presser foot lifter lever for lifting the presser foot are respectively driven by two electromagnets. However, the electromagnet as a driving source has the following defects: the stroke of the electromagnet cannot be flexibly changed, and it will generate large shaking and noise during movement, resulting in high noise of the sewing machine and affecting the stable operation of the sewing machine. In addition, the two driving sources lead to more complex structure, larger space occupation, higher cost, inconvenient installation and oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B29/02D05B65/00
CPCD05B29/02D05B65/00
Inventor 丁建明潘建国
Owner JACK SEWING MASCH CO LTD
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