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Thread trimming and tread loosening presser foot pressure adjusting device of sewing machine, and sewing machine

A pressure regulation and sewing machine technology, applied in the field of sewing machines, can solve the problems of complex structure and low working accuracy, and achieve the effects of high transmission efficiency, simple and compact structure, and simplified structure.

Active Publication Date: 2020-04-10
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This driving method to achieve the three functions of thread trimming, thread loosening and presser foot pressure adjustment has the disadvantages of complex structure and low working precision.

Method used

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  • Thread trimming and tread loosening presser foot pressure adjusting device of sewing machine, and sewing machine
  • Thread trimming and tread loosening presser foot pressure adjusting device of sewing machine, and sewing machine
  • Thread trimming and tread loosening presser foot pressure adjusting device of sewing machine, and sewing machine

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Embodiment Construction

[0057] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, not to limit the present invention.

[0058] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and therefore should not be construed as limiting the inventio...

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Abstract

The invention relates to the technical field of sewing machines, in particular to a thread trimming and thread loosening presser foot pressure adjusting device of a sewing machine, and a sewing machine comprising the same. The device comprises a power part, a cam structure which is driven to rotate by the power part and is provided with a first driving contour surface and a second driving contoursurface, a thread trimming driving crank connected with a thread trimming mechanism, and an ejector pin for connecting a thread loosening mechanism and a presser foot pressure adjusting mechanism, wherein a first driving pin matched with the first driving contour surface is arranged on the thread trimming driving crank, and the first driving contour surface is provided with a thread trimming driving section for driving the thread trimming mechanism to execute a thread trimming action; a second driving pin matched with the second driving contour surface is arranged at one end of the ejector pin, and the second driving contour surface is provided for a thread loosening driving section for driving the thread loosening mechanism to perform a thread loosening action and a pressor foot pressureadjusting driving section for driving the presser foot pressure adjusting mechanism to execute a presser foot pressure adjusting action. Three functions of trimming, loosening and adjusting the pressure of the presser foot are realized by one power part.

Description

technical field [0001] The invention relates to the technical field of sewing machines, in particular to a thread trimming and thread loosening presser foot pressure adjusting device of a sewing machine and a sewing machine. Background technique [0002] At present, the sewing machine can use the thread trimming, thread loosening and presser foot pressure adjustment functions during the sewing process. Among them, the thread trimming and thread loosening functions are driven by electromagnets, and there is a problem of slow response; the pressure adjustment function of the presser foot is realized by manual adjustment of the pressure regulating nut. This driving method for realizing the three functions of thread trimming, thread loosening and presser foot pressure adjustment has the disadvantages of complex structure and low working precision. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a sewing machine thre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B29/02D05B65/00D05B47/04D05B69/02
CPCD05B29/02D05B47/04D05B65/00D05B69/02
Inventor 丁建明潘建国
Owner JACK SEWING MASCH CO LTD
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