Trimming control mechanism and sewing machine

Abstract

The invention provides a trimming control mechanism and a sewing machine comprising the trimming control mechanism. The trimming control mechanism comprises an inductor for inducing the edge of a sewing material, wherein the inductor and a sewing table panel in the sewing machine are relatively fixed; the inductor is arranged at the rear side of a thread trimmer in the sewing machine along a clothfeeding direction for forward cloth feeding of a cloth feeding mechanism in the sewing machine, and a distance X between the inductor and a cutting edge of the thread trimmer is 15 to 30 mm. According to the trimming control mechanism and the sewing machine, the distance X between the inductor and the cutting edge of the thread trimmer is set to be 15 to 30 mm, so that the inductor is closer to the thread trimmer, the length of the thread end remaining on the sewing material after trimming can be effectively controlled, the length of the thread end is stable, the thread trimming effect of theshort thread end can be achieved, the secondary trimming of the thread end is omitted, the labor cost is saved, and the sewing efficiency and the quality of sewing products are improved.

Description

technical field [0001] The invention relates to a thread trimming control mechanism. [0002] The present invention also relates to a sewing machine comprising the above-mentioned thread trimming control mechanism. Background technique [0003] At present, the fully automatic overlock sewing machines on the market can realize automatic thread trimming. It has a fixed knife, a moving knife capable of engaging with the fixed knife, and a thread trimming drive source that drives the movement of the moving knife. At the same time, the overlock sewing machine is also equipped with a sensor that can sense the edge of the sewing material. The sensor is connected to the electronic control module. The electronic control module controls the action of the thread trimming drive source according to the feedback signal of the sensor, and then Control the cutting time of the moving knife to control the length of the thread ends remaining on the sewing material after thread trimming. Howe...

AI Technical Summary

Problems solved by technology

However, in the current overlock sewing machine, the installation position of the sensor is not very appropriate, resulting in a very long length of thread ends remaining on the sewing material after thread trimming, and the length of the thread ends is unstable, which in turn causes workers to need to trim the thread ends twice. Thereby increasing labor costs, and reducing sewing efficiency and quality of sewing products

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