Needle bar and thread hooking assembly of sewing machine

Abstract

The invention discloses a needle bar and a thread hooking combination device of the sewing machine, comprising a swing shuttle swinging mechanism and a needle bar mechanism. The swing shuttle swinging mechanism is composed of a thread hooking crank component A and a pendulum shaft component B; the needle bar mechanism is composed of a needle bar cam assembly unit A and a swing rod assembly unit B; wherein, the thread hooking crank component A comprises a vertical shaft, a thread hooking crank, a long connecting rod, a pinion, an upper shaft gear and a vertical shaft gear; the pendulum shaft component B comprises an installing seat and a pendulum shaft strung inside the central seat sleeve of the installing seat; the needle bar cam assembly unit A is composed of an upper shaft connected with a driving device of the host machine of the sewing machine and a needle bar cam nested on the shaft rod; and the swing rod assembly unit B is composed of a needle bar, a swing rod and a fixing pedestal. The swing shuttle swinging mechanism and the cam swing rod slider needle bar mechanism of the sewing machine are matched with each other to move by means of the rotation of the upper shaft, thereby forming a novel thread hooking combination mechanism of the swing shuttle sewing machine needle bar.

Description

technical field [0001] The invention relates to a stitching material and thread hook combination device of a sewing machine, which belongs to the category of sewing machine components. Background technique [0002] The shuttle shaft of the traditional shuttle sewing machine is placed horizontally, and the movement mode is to swing around the axis. The transmission mode of the mechanism adopts a crank rocker mechanism and a guide rod mechanism connected in series. The transmission mode of the thrusting mechanism adopts the crank slider mechanism. The combination of the above-mentioned swinging movement mechanism of the shuttle shuttle and the stabbing mechanism of the crank slider forms a combination mechanism of the stabbing and thread hooking of the traditional shuttle sewing machine. [0003] The swing structure of the traditional sewing machine shuttle is as follows: figure 1 shown. The connection structure of the swing mechanism of the shuttle hook line is: the long ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a sewing machine needle and thread hook combination device to solve the problem that the stroke of the needle mechanism of the traditional sewing machine is fixed, the movement track of the needle bar is simple, and the complex movement track cannot be realized

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