Thread trimming cutter head structure on a sewing machine

Abstract

The invention provides a thread trimming cutter head structure for a sewing machine and belongs to the technical field of clothing manufacturing equipment. According to the thread trimming cutter headstructure, the technical problems that the thread trimming cutter head structure for a conventional sewing machine is unstable and unreliable in operation and the like are solved. The thread trimmingcutter head structure comprises a base plate, a moving tool rest, a moving blade, a fixed tool rest, a fixed blade and a strip-shaped push plate; a mounting sliding chute is formed in the base plate;the push plate is hinged to the base plate; the other end of the fixed tool rest is positioned in the mounting sliding chute and connected with a swing connecting rod; one end of the swing connectingrod is hinged to the base plate; a stop collar I is arranged between the other end of the swing connecting rod and the base plate; the other end of the moving tool rest is positioned above the fixedtool rest in the mounting sliding chute and is provided with a strip hole in the length direction of the moving tool rest; a push sliding chute is formed in one side of the moving tool rest and one end of the push plate is inserted into the push sliding chute; the swing connecting rod is connected with the fixed tool rest through a stop collar II and the stop collar II penetrates through the striphole. The thread trimming cutter head structure in the invention is simple in adjustment; the whole structure is stable and reliable in operation.

Description

technical field [0001] The invention belongs to the technical field of sewing machines, and relates to a structure of a thread cutting cutter head on a sewing machine. Background technique [0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing material. The sewing machine can sew fabrics such as cotton, fiber crops, silk, wool, and artificial fibers, and products such as leather, plastics, and paper. At present, with the increasing development of sewing machine technology, in order to improve the production efficiency of factories, reduce the workload of workers, and ensure the continuity of the process, most industrial sewing machines are equipped with automatic thread trimmers to save labor, electricity and labor. At present, the automatic thread trimming device of the sewing machine realizes thread trimming by the cooperation of the moving knife and ...

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned patent documents, a double-link mechanism is used to realize the knife avoidance of the cutter head. The adjustment method is adjusted by two eccentrics. The installation structure is relatively complicated, and the adjustment is complicated.

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