Needle rod clutching mechanism of sewing machine and double-needle machine

Abstract

The invention provides a needle rod clutching mechanism of a sewing machine and a double-needle machine and belongs to the technical field of double-needle machines, aiming at solving the problems of an existing needle rod clutching mechanism of the sewing machine that the separation and resetting stability of a needle rod is poor and the needle rod clutching mechanism easily has faults. The needle rod clutching mechanism of the sewing machine comprises a sliding shaft, wherein one end of the sliding shaft is connected with a separation assembly and the other end of the sliding shaft is connected with a resetting assembly; the separation assembly comprises a rotary shaft, a wrench and a supporting plate assembly mounted on a machine head; the wrench is provided with a pulling sheet and a limiting column; a detection assembly is arranged between the supporting plate assembly and the wrench; the detection assembly is used for detecting leftward and rightward swinging of the wrench, generating left and right separation signals and sending the signals to electric control of the sewing machine; the supporting plate assembly is fixedly provided with a driver which is in electric control connection with the sewing machine. The clutching mechanism has the advantages of simple and beautiful structure, convenience for operation, automatic resetting and good separation and resetting stability.

Description

technical field [0001] The invention belongs to the technical field of sewing, and relates to a sewing machine needle bar clutch mechanism and a double-needle machine. Background technique [0002] Double-needle machine, also known as double-needle sewing machine, is a sewing machine with two sewing needles, and the effect is that the double threads are juxtaposed and parallel to each other. When sewing a corner, it is a single needle bar movement, that is, one of the needle bars is separated and does not work according to the need, and then the required number of stitches is sewn, the sewing is stopped, the presser foot is lifted, and the sewing material is rotated according to the actual corner angle. Then sew the required number of stitches, and resume the movement of the double needle bar after the end, that is, reset the previously separated needle bar. The double needle bars of the double needle machine are the left needle bar and the right needle bar. According to th...

AI Technical Summary

Problems solved by technology

The above-mentioned structure has the following disadvantages: the operation of separating the needle bar is realized by manually pulling the switching wrench, and the operation process is not easy to grasp; especially after the needle bar is separated, the N1 and N2 needles sewn before and after rotating the sewing material are all manually Turn the handwheel or use the pedal to complete, and ensure that N1=N2, that is, the number of stitches must be sewn twice before and after the sewing material is rotated. It is manually controlled, which is prone to errors, resulting in rework, time-consuming and labor-intensive and low efficiency. , resulting in unnecessary waste of resources; in addition, when resetting, it is necessary to manually press the reset plate to reset the switching wrench before resetting the sliding shaft through the resetting component, thereby increasing the operation steps of needle bar separation, which is not conducive to mass production

This technical solution realizes the separation of the left and right needle bars through the driving mechanism of the bidirectional electromagnet. During the whole corner sewing process, the electromagnet is always in the state of attraction. Since the electromagnet is attracted for a long time, it is easy to generate heat and burn out, so it is necessary to sew at the corner. If the distance is long and the pull-in time is long, and the broken needle bar cannot be reset in time, the electromagnet will easily heat up and burn out due to the long-term pull-in, so that the entire double-needle machine cannot work normally.

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