Differential cloth-feed adjusting structure and sewing machine
A technology for adjusting structure and sewing machine, applied in the direction of cloth feeding mechanism, sewing machine components, sewing machine control device, etc., can solve the problems of difficult processing and high cost of parts, and achieve the effect of easy processing, simple installation and accurate adjustment.
Active Publication Date: 2016-10-12
JACK SEWING MASCH CO LTD
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Problems solved by technology
[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a differential cloth feeding adjustment structure and a sewing machine, which are used to solve the problems of high cost and difficult processing of various parts in the differential cloth feeding adjustment structure in the prior art
Method used
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[0053] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0054] see Figure 1 to Figure 5 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. within the scope covered by the disclosed technical content. At the same ti...
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The invention provides a differential cloth-feed adjusting structure and a sewing machine. The differential cloth feed adjusting structure comprises a differential ratio adjusting part and a driving part, wherein the differential ratio adjusting part comprises a manual adjusting component, a differential connecting piece and a cloth-feed connecting rod; the manual adjusting component is in transmission connection with the differential connecting piece; one end of the cloth-feed connecting rod is hinged to the differential connecting piece and a differential connecting rod, so as to form a differential hinge point; the manual adjusting component is used for changing the position of the differential hinge point through the differential connecting piece; the differential connecting rod is connected to a differential feed dog rack; the differential feed dog rack is connected with a differential feed dog; the driving part comprises a feed connecting rod arranged on a spindle of the sewing machine, a cloth-feed shaft, a cloth-feed crank and a differential swing rod; the cloth-feed crank and the differential swing rod are fixed on the cloth-feed shaft in such a manner that preset included angles are formed between the cloth-feed crank and the differential swing rod; the feed connecting rod is connected with the cloth-feed crank; the differential swing rod is hinged to the other end of the cloth-feed connecting rod. According to the differential cloth-feed adjusting structure and the sewing machine, all the parts are easy to machine, and simple to mount, and the precise adjustment of the differential ratio is guaranteed.
Description
technical field [0001] The invention relates to the technical field of sewing machines, in particular to a differential cloth feeding adjustment structure and a sewing machine. Background technique [0002] Overlock sewing machine is a kind of sewing machine. Its stitches can be divided into single-thread, double-thread, three-thread, four-thread, five-thread and six-thread. It can be used to sew fabrics such as T-shirts, sportswear, underwear, and knitting. In order to improve the working efficiency of the overlock sewing machine, a differential feeding device is installed in the overlock sewing machine, and the differential feeding is realized by using the different movement speeds of the differential feed dog and the active cloth feed dog. . [0003] Chinese patent 200610117968.8 discloses a differential feeding device of a sewing machine, which includes a feeding tooth frame and a differential tooth frame arranged on the sewing machine frame, and the feeding tooth fram...
Claims
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IPC IPC(8): D05B27/08D05B69/02D05B1/20
CPCD05B1/20D05B27/08D05B69/02
Inventor 柯祥林祝书伟郑吉位延辉
Owner JACK SEWING MASCH CO LTD
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