Thread-loosening device for shortening trim thread for overseaming sewing machine

Thread-loosening device for shortening trim thread for overseaming sewing machine

CN
  • CN 202,499,989 U
  • Filed: 02/28/2012
  • Issued: 10/24/2012
  • Est. Priority Date: 02/28/2012
  • Status: Active Grant
First Claim
Patent Images

1. an overseam sewing machine shortens the thread-loosening device of trimming, and it mainly is provided with one to the finish thread-loosening device of back trimming action of sewing in overseam sewing machine board, and it includes:

  • One substrate, correspondence are assembled on board;

    Several tension adjustment buttons for correspondence is arranged on the substrate, are used for pressing from both sides the member of thread and adjustable car load suture degree of tightness of pulling;

    Corresponding tension adjustment button and the minute-pressure folder established are for being provided with the pull member of the thread that discharged by the tension adjustment button of a trace folder in corresponding each tension adjustment button place;

    One compresses plate;

    Be arranged between tension adjustment button and the minute-pressure folder;

    And with a drive source winding, and this side that compresses corresponding each the tension adjustment button of plate is provided with the first embedding section, and a side of corresponding each minute-pressure folder is provided with the second embedding section;

    Letting drive source drive to compress plate activity displacement, to let tension adjustment button loose ends and minute-pressure folder clamp, tension adjustment button clamp and minute-pressure folder loose ends.

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