Servo control system for netting machine

Abstract

The invention discloses a servo control system for a netting machine. The servo control system comprises a main motor, an encoder, a tension sensor and a let-off servo motor, wherein the main motor is used for driving a main shaft to continuously rotate; the encoder is used for detecting the rotation angle of the main shaft; the tension sensor is used for detecting an actual tension value of a warp wound on a let-off shaft; the let-off servo motor drives the let-off shaft to rotate; and within each work cycle, the controller lastingly receives a detection signal of the encoder, controls the let-off servo motor to work in the manners as follows: when the main shaft is at the position of zero degrees, the let-off servo motor drives the let-off shaft to begin to rotate until the let-off shaft rotates the selected angle alpha i; and when the main shaft rotates to 180 degrees, the tension sensor detects an actual tension value, the controller compares the actual tension value with a tension set value, and sends out a next control signal according to the comparison result, and the let-off shaft rotates the selected angle alpha i+1 in the next work cycle. According to the servo control system for the netting machine, adjusting and weaving processes of the let-off value are collaboratively carried out; and uniform tension distribution of the fabric is ensured.

Description

technical field [0001] The invention relates to a net weaving machine, in particular to a servo control system of the net weaving machine. Background technique [0002] The net weaving machine in the prior art has the defects of complex structure, low running precision and slow running speed. Below to figure 1 The illustrated net weaving machine is taken as an example to explain the structure and working principle of the existing net weaving machine. The net weaving machine can be mainly divided into five parts: weft cutting mechanism, sword throwing mechanism, warp let-off mechanism, coiling mechanism and transfer mechanism. These five parts perform weft cutting, sword throwing, warp letting off, coiling and transfer action. Specifically, (1) The structure and working process of the weft cutting mechanism are as follows: the motor 1 transmits the power to the gears 7 and 8 through the main shaft 5 through a set of reduction pulleys 2, 3 and 4, which is a first-stage redu...

AI Technical Summary

Problems solved by technology

The use of various transmission mechanisms increases the complexity of the equipment and affects the operating accuracy of the equipment

Moreover, once the transmission mechanism is adopted, a certain part cannot be replaced at will, resulting in the inability to adjust the weaving speed or the number of weaving meshes of the weaving machine according to the needs, thus affecting the flexibility of the weaving machine

During the weaving process, the tension of the warp thread changes at any time. Since the warp let-off mechanism in the weaving machine cannot be adjusted, the fabric appears tight at one section and loose at another, which affects product quality.

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