An Intermittent Backward Active Beam Constant Tension Mechanism

Abstract

The present invention relates to a constant tension mechanism of an active warp beam of intermittent retraction, comprising a warp beam, a driving wheel, a driven wheel and an intermittent retracting mechanism, a driven wheel and a driving wheel are arranged at one end of the warp beam, the driving wheel and The warp beam is coaxially fixed, and the driven wheel and the driving wheel are detachably connected. An intermittent retraction mechanism is arranged between the driving wheel and the driven wheel. The driving wheel is used to rotate forward under the drive of the warp beam, and the driven wheel reverses. Provide constant tension to the warp beam. When the driven wheel rotates positively, it drives the cylinder rod to extend, and the cylinder reversely retracts to provide reverse tension to the driven wheel, and the driven wheel then provides reverse tension to the driving wheel and the warp beam to achieve constant warp beam tension. Due to the stroke of the cylinder limited, the present invention sets a specific structure so that the driven wheel can automatically disengage from the driving wheel after it rotates forward at a certain angle, and then quickly retreats to a fixed angle after disengagement and then cooperates with the driving wheel again. Small space, large adjustment range.

Description

technical field [0001] The invention relates to the technical field of weaving equipment, in particular to an intermittent retreat active warp beam constant tension mechanism. Background technique [0002] At present, the warp beam tension basically adopts the negative unwinding method. In order to avoid the yarn slack, the yarn tension adjustment device is often installed on the creel. The adjustment result of the unwinding device is greatly affected by the experience level of the operator. Once the adjustment is not in place, the uneven tension will not only cause waste of yarn, but also cause difficulty in weaving and affect the quality of the fabric. Especially in the weaving of three-dimensional fabrics, dozens of layers of warp threads are equipped with dozens of warp beams. If each beam is equipped with a negative unwinding device, there will be insufficient space on the creel frame to realize tension adjustment. Contents of the invention [0003] The technical pro...

AI Technical Summary

Problems solved by technology

[0002] At present, the warp beam tension basically adopts the negative unwinding method. In order to avoid the yarn slack, the yarn tension adjustment device is often installed on the creel. The adjustment result of the unwinding device is greatly affected by the experience level of the operator. Once the adjustment is not in place, the uneven tension will not only cause waste of yarn, but also cause difficulty in weaving and affect the quality of the fabric

Especially in the weaving of three-dimensional fabrics, dozens of layers of warp threads are equipped with dozens of warp beams. If each beam is equipped with a negative unwinding device, there is not enough space for the creel frame to realize tension adjustment.

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