Thread take-up mechanism for sewing machine

Abstract

The invention provides a thread take-up mechanism for a sewing machine. When a thread take-up rod moves to different positions in the sewing process, the tension force of an upper thread is stabilized, so that the thread track in the sewing process of the clothes is stable, and the sewing effect and sewing quality of the clothes are well guaranteed. The thread take-up mechanism comprises a sewingmachine body, wherein the thread take-up rod is arranged in the sewing machine body, and a motion thread hook corresponding to the thread take-up rod is arranged on the sewing machine body and is connected with a thread hook driving device. When the requirement on the thread through amount of a thread hooking mechanism is large, the thread amount matched with the thread through amount is suppliedby the motion thread hook, so that the thread through resistance of the thread hooking mechanism is relatively small; and when the requirement on the thread through amount of the thread hooking mechanism is small, the thread amount matched with the thread through amount is supplied by the motion thread hook, and the redundant thread amount is rapidly recycled, so that the sewing tension force is stable, the thread track in the sewing process of the clothes is stable, the sewing effect and sewing quality of the clothes are well guaranteed, and meanwhile, the breakage of the upper thread is effectively avoided.

Description

Technical field [0001] The present invention relates to the technical field of sewing equipment parts, in particular to a thread take-up structure of a sewing machine. Background technique [0002] In the sewing process of clothing, the needle drives the sewing thread into the product to be sewn. After the thread hooking mechanism hooks the upper thread, the thread hooking mechanism releases the upper thread. After the upper thread is released, the upper thread is taken up by the thread take-up lever. Tight, intertwined with the bottom thread to form stitches to complete the sewing of the article. Since the movement track of the thread take-up lever is fixed, when the thread take-up lever tightens the upper thread, the upper thread will have different tensioning force on the upper thread at different positions. During the sewing process, the tension of the sewing thread will change, resulting in unstable stitches in the sewing of the clothes, thereby affecting the sewing effect a...

AI Technical Summary

Problems solved by technology

[0002] During the sewing process of clothes, the needle drives the suture thread into the product to be sewn. After the thread hook mechanism hooks the upper thread, the thread hook mechanism releases the upper thread. After the upper thread is released, the upper thread is collected by the thread take-up lever. Tight, interweaving with the bottom thread to form stitches to complete the sewing of the item. Since the movement track of the thread take-up lever is fixed, in the process of tightening the upper thread by the thread take-up lever, the tension force on the upper thread is different when the upper thread is at different positions. The tension of the suture will change during the sewing process, causing the stitches to be unstable during the sewing of the clothes, thus affecting the sewing effect and quality of the clothes

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