Improved sewing machine take-up lever structure

Abstract

The invention provides an improved sewing machine take-up lever structure. In the sewing process, when a take-up lever runs to different positions, the thread feeding amount of an upper thread and thepulling force of the upper thread are kept stable, therefore it is further guaranteed that stitches in the sewing process of clothes are stable, and the sewing effect and sewing quality of the clothes are better improved. The improved sewing machine take-up lever structure comprises a sewing machine take-up lever body, the sewing machine take-up lever body is provided with a threading hole whichis a long slotted hole, and the improved sewing machine take-up lever structure is characterized in that the long slotted hole is provided with a transverse notch.

Description

technical field [0001] The invention relates to the technical field of sewing equipment components, in particular to an improved structure of a thread take-up lever of a sewing machine. Background technique [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. During the sewing process, the tension of the suture will change, causing the stitches in the sewing of the clothes to be unstable, ...

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. During the sewing process, the tension of the suture will change, causing the stitches in the sewing of the clothes to be unstable, thereby affecting the sewing effect and sewing quality of the clothes. The applicant has invented a sewing machine thread take-up lever structure, which It effectively ensures the stability of the stitches during the sewing of the clothes, and better ensures the sewing effect and sewing quality of the clothes. However, in this invention, when the thread take-up lever rises, due to the tension of the thread, the thread will instantly fall from the thread take-up lever The top of the slotted hole slides down to the bottom of the slotted hole, which makes the suture relax faster, thus affecting the stitching of the suture

Images