Belt tension adjustment device for negative let-off mechanism of warp knitting machine

Abstract

The invention discloses a belt tension adjustor for passive warp supply mechanisms of warp knitting machines, which comprises a housing side plate, a warp supply shaft is articulated with the housing side plate, one end of the warp supply shaft extends out of the housing side plate, a braking belt pulley is fixed at the end of the warp supply shaft, a V-shaped belt is mounted in the V-shaped annular groove of the braking belt pulley, both ends of vertical slide bars are fixed on supporting plates, the supporting plates are fixed on the housing side plate, a drive screw is articulated with the two supporting plates, the lower end of the drive screw extends out of the lower supporting plate, a rotary wheel is fixed at the lower end of the drive screw, a sliding block is fixed at the top of a sliding plate, the sliding block is screwed on the drive screw, two opposite fixed plates are fixed on the sliding plate, pushing cylinders are fixed on the fixed plates, the pushing rods of the pushing cylinders run through the fixed plates, and pressing blocks are fixed on the pushing rods of the pushing cylinders. The positions of clamping plates fixing one end of the belt can be adjusted, and thereby the tension adjustment requirement of belts with different elasticities and lengths is met.

Description

[0001] Technical field: [0002] The invention relates to the technical field of warp knitting machine equipment, in particular to a belt tensioning device for a negative let-off mechanism of a warp knitting machine. [0003] Background technique: [0004] The warp knitting machine is mainly composed of a knitting mechanism, a bar traverse mechanism, a let-off mechanism, a pulling and coiling mechanism and a transmission mechanism. The let-off mechanism is to untie the warp yarn on the warp beam and send it into the weaving area. There are two types of negative and positive. In the passive mechanism, the warp beam is pulled by the warp yarn tension to send out the warp yarn, and does not need a special warp beam transmission device. It is suitable for warp knitting machines with low machine speed and complicated warp let-off rules. The positive warp let-off mechanism adopts a special transmission device to rotate the warp beam to send out the warp yarn, and it is also differe...

AI Technical Summary

Problems solved by technology

[0005] In the existing passive let-off mechanism, one end of the belt is fixed on the fixing fixture installed on the frame, and then the other end is fixed on the connecting rod, and the other end of the connecting rod moves up and down through the block on the pressing rod. To push the connecting rod, realize the close contact or loosening between the belt and the brake wheel, and realize the stable warp delivery of the let-off mechanism. Since the position of the fixing fixture cannot be adjusted, the tension of the belt cannot be adjusted as required. When it needs to be adjusted, only different lengths or elastic belts can be replaced to meet the needs, and its debugging and replacement are troublesome

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