Single acting low impact high speed shedding mechanism of electronic jacquard machine, internally tangent driven by steel rope

Abstract

The invention provides a single acting low impact high speed shedding mechanism of an electronic jacquard machine, internally tangent driven by a steel rope. The single acting low impact high speed shedding mechanism comprises a frame, a lower knife box and an upper assembly box. The frame is fixedly provided with a crank which is in circumferential rotary motion, and the frame is further provided with a front lifting wheel and a rear lifting wheel. The crank is connected with the front lifting wheel through a drive connecting rod. The front lifting wheel is connected with the rear lifting wheel through the steel rope. The lower knife box is connected with the front lifting wheel and the rear lifting wheel through a lower box connecting rod. The upper assembly box is connected with the front lifting wheel and rear lifting wheel through an upper box connecting rod. A guide rail is arranged between the lower knife box and the upper assembly box. The single acting low impact high speed shedding mechanism has the characteristics of stable operation and low noise and remarkably improves the reliability and service life of the electronic jacquard machine.

Description

technical field [0001] The invention relates to a low-impact and high-speed opening mechanism driven by steel rope inward cutting of a single-action electronic jacquard machine. The invention belongs to the technical field of electronic jacquard machines of textile machinery. Background technique [0002] The single-action electronic jacquard machine is a popular electronic jacquard machine with simple structure, low cost and low weaving speed (≤200 weft / min), which is mainly used in conjunction with small rapier looms that have a large stock in the market. The structural feature is that the needle selection solenoid valve is installed in the movable upper assembly box (abbreviated as the upper box) and runs opposite to the lower knife box (abbreviated as the lower box), which constitutes the opening movement of the jacquard machine. It is a typical single-action electronic jacquard machine. structured as figure 1 shown. Its working principle is as follows: the crank 1' w...

AI Technical Summary

Problems solved by technology

However, the operation practice shows that under this design and arrangement, the needle selection impact of the mechanism is very large and the noise is strong, which not only affects the stability of the mechanism when the needle is selected due to impact vibration, but also causes occasional jumping and defective fabrics. , also due to the existence of impact force, the mechanism has to bear additional dynamic load, which leads to the increase of mechanical failure and the decrease of machine life

[0004]Needle selection impact is unavoidable for both single-action and double-action electronic jacquard machines, especially for single-action electronic jacquard machines. There are two main reasons for this: 1. It is a single-action jacquard machine with only one set of broaches. When selecting needles, all hooks 12' are loaded on the broaches 13' of the lower box. The hook 12' constitutes the impact load on the lower box 8' in a sudden loading mode, and the double-action type has two groups of broaches to divert the load; the second is the upper box 9' and lower box 8' of the single-action jacquard machine Relative motion is formed during needle selection, and the collision speed during needle selection is the vector sum of the two speeds, in Figure 1, the action points C and D of the front lifting rocker 4' and the rear lifting rocker 15' are within the 60° swing range, and the vertical speed The attenuation is very little, and the relative collision motion of the upper and lower boxes is completed at a high speed, and the action time is very short, so the impact vibration is strong

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