Filament Tension Constant

Abstract

The invention provides a filament tension constant device which comprises a control roller, a transmission mechanism and a front leather roller. The front leather roller is in transmission connection with the control roller through the transmission mechanism. The transmission mechanism is adopted in the constant device, the transmission ratio of the transmission mechanism and the diameter of the control roller are set according to filament production demands, the surface linear speed ratio of the front leather roller to the control roller is made to be larger than 1 and the effect that constant tension is exerted on filaments between the control roller and the front leather roller is realized. The filament tension constant device is simple in structure, brings convenience to adjustment of tension and is capable of outputting the filaments with constant tension.

Description

technical field [0001] The invention relates to a yarn tension control device for spinning engineering, in particular to a filament tension constant. Background technique [0002] In the process of spinning cotton-bale filament, due to the unwinding of the cheese, the diameter changes from large to small, and the tension changes continuously, resulting in unstable tension of the produced filament and poor coating effect. Therefore, the tension control device becomes the key device in the spinning process. In order to solve this problem, the following three methods are usually adopted at present: [0003] 1. Gravity-type yarn tension control device, that is, a device that uses a tension sheet or a spring to pressurize the filament to control the tension of the filament. Because the filament will wander between the upper and lower tension discs, vibration will inevitably occur when the machine is running, and the tension of the filament will be unstable. And the flying flow...

AI Technical Summary

Problems solved by technology

Because the filament will move between the upper and lower tension discs, vibration will inevitably occur when the machine is running, and the filament tension will be unstable

And the flying flowers produced during spinning on the spinning frame will enter between the upper and lower tension discs, and the flying flowers will be entangled on the filaments, seriously hindering the progress of the filaments, and the tension of the filaments will increase infinitely and even break.

[0004] 2. Adopt two tension balance rollers arranged in parallel up and down. The upper tension roller is fixed to rotate, and the position of the lower tension roller can be swung to adjust and then rotate after being fixed. The yarn is wound in an "S" shape between the two tension balance rollers. The tension is generated by being dragged and rotated by the surface of the yarn wound on the pan head against the friction roller. The tension does not change with the unwinding tension during operation. If you want to adjust the tension, you must adjust the fixed position of the lower tension roller to change it. The tension is adjusted by the size of the enveloping angle of the warp yarn between the two tension rollers, the dynamic tension does not track, the yarn tension is uneven, and the operation is inconvenient

[0005] 3. Adopt two tension balance rollers arranged in parallel up and down. The upper tension roller is fixed and driven by a motor. The lower tension roller is still the same as the second method. The tension adjustment of this method is to change the speed of the upper tension roller, and the active Yarn feeding, the second is to change the yarn enveloping angle by changing the fixed position of the lower tension roller, and assist in increasing or decreasing the total tension. In this way, there are still defects such as inaccurate tension control, small tension control adjustment range, and inconvenient operation. The tension of the pan head is inconsistent inside and outside, inconsistent with each other, and the outer circumference has a large error, which directly affects the fabric quality and grade of the warp knitting machine, as well as the driving efficiency, and cannot meet the technological requirements of weaving high-grade high-density ultra-thin high-elastic fabrics

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