Line cutting device for sewing machine

Abstract

The invention provides a line cutting device for a sewing machine and capable of cutting sewing lines stably for a long time. The line cutting device comprises a line cutting assembly and a line hooking assembly; the line cutting assembly comprises a hot line cutting blade and an electric heater, the electric heater is arranged on the rear end of the hot line cutting blade; the line hooking assembly consists of a sliding rail, a sliding track, an electromagnet controller, an electromagnet, a reset spring, an actuation end and a line hooking hanger; the electromagnet controller is arranged on asewing machine platform, an electromagnet is arranged on the electromagnet controller, the sliding track is arranged on the front end of the electromagnet controller, a chute is formed in the upper surface of the sliding track, the sliding rail is arranged in the chute in a sliding manner, the actuation end is arranged on one end, close to the electromagnet controller, of the sliding rail, and isa magnet for attracting together with the electromagnet; and the reset spring is further arranged on the end of the actuation end; and a line hooking hanger is arranged on the front end of the sliding rail.

Description

technical field [0001] The invention relates to a sewing machine, and is particularly applied to cutting sewing threads. Background technique [0002] With the improvement of the automation of sewing technology, automatic thread cutting device has been widely used on sewing machines, but the traditional automatic thread cutting device mainly relies on the cutting of the blade to break the thread, and the thread is pulled by the hooking device. The sharp edge of the blade is used to cut the broken thread, but with the long-term use of the blade, the blade will gradually become dull due to the influence of the environment, and it is difficult to cut the suture at one time, especially for some special materials or thicker sutures , even a sharp blade is difficult to successfully cut off such sutures once, which seriously affects work efficiency and even interrupts continuous production. Contents of the invention [0003] The technical problem to be solved by the present inve...

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Problems solved by technology

[0002] With the improvement of the automation of sewing technology, automatic thread cutting device has been widely used on sewing machines, but the traditional automatic thread cutting device mainly relies on the cutting of the blade to break the thread, and the thread is pulled by the hooking device. The sharp edge of the blade is used to cut the broken thread, but with the long-term use of the blade, the blade will gradually become dull due to the influence of the environment, and it is difficult to cut the suture at one time, especially for some special materials or thicker sutures , even with a sharp blade, it is difficult to successfully cut such sutures at one time, which seriously affects work efficiency and even interrupts continuous production

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