Silk thread package dynamic contact kinetic parameter testing device and method

Abstract

The invention discloses a device and a method for testing dynamic contact kinetic parameters between a silk yarn package and a contact roller. The invention relates to the field of polyester filamentproduction equipment and mechanical dynamics. According to the testing device and method, in the rotating state, the dynamic contact rigidity and the contact damping value between a package and a contact roller are tested according to the mechanical dynamics principle. A spindle shaft package and a contact roller are driven by a servo motor to rotate, an air cylinder is adopted for pressurizing tokeep the contact roller in contact with the package and have certain contact pressure, an electric vibration table is adopted for providing system exciting force, vibration signals of the package andthe contact roller are tested respectively, and dynamic contact rigidity and contact damping are calculated and obtained. The dynamic contact stiffness and the contact damping value under different rotating speeds, different package diameters and different contact pressures can be accurately tested. The defects of inaccurate design parameters, access of analysis results and actual measurement andthe like caused by long-term use of static rigidity and damping and even use of estimated parameters to design a winding system are overcome.

Description

technical field [0001] The patent of the present invention relates to the field of mechanical dynamics, in particular to a device and method for testing dynamic contact dynamic parameters between a silk package and a contact roller. Background technique [0002] In order to facilitate operations such as storage and transportation, polyester filaments are usually wound into a disc shape of a certain specification (also known as a silk cake) on a winding machine. Therefore, the package is a transient state. According to the process and market needs, the package should not only have a high winding density to increase the capacity, but also conform to the specified appearance and shape, and the wires should be laid evenly without sagging, and at the same time, it should be easy to unwind smoothly in the subsequent process. According to the current polyester filament production process, the winding speed is as high as 6000m / min. In order to keep the winding speed constant, during...

AI Technical Summary

Problems solved by technology

According to the current polyester filament production process, the winding speed is as high as 6000m / min. In order to keep the winding speed constant, during the winding process, with the increase of the package diameter, the spindle speed gradually decreases from 18000r / min to 3000r / min, at the same time, in order to make the silk thread on the surface of the package that has just been wound on the surface of the package stably and correctly laid, the winding machine is equipped with a contact roller device, and the contact roller rotates at a constant high speed to ensure that the surface of the package is only produced Relative rotation without relative sliding to avoid damage to the surface of the package. The pressure between the contact roller and the surface of the package should be moderate. If it is too small, it will not stabilize the thread. If it is too large, it will damage the quality of the thread.

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