A fast braking device and method for an optical fiber screening machine

Abstract

The invention discloses a fiber screening machine rapid brake apparatus and method. The apparatus comprises a pneumatic brake, a solenoid valve, a compression air source, a pressure controller, a PLC, a speed detection device and an inertia detection device, wherein the air inlet of the pressure controller is connected with the air outlet of the solenoid valve, the air outlet of the pressure controller is connected with the air inlet end of the pneumatic brake, and the solenoid valve is installed on a pipeline of an outlet of the compression air source; and the speed detection device is used for detecting a speed of a line laying main shaft, the inertia detection device is used for detecting inertia of the line laying main shaft, the speed detection device and the inertia detection device are both connected with the input end of the PLC, and the output end of the PLC is connected with the solenoid valve and the pressure controller. According to the method, the acting frequency of the solenoid valve is controlled according to the operation speed of the line laying main shaft, and output pressure of the pressure controller is controlled according to the moment of inertia of the line laying main shaft during a brake, such that a rapid and stable brake effect can be realized, at the same time, equipment loss can also be reduced.

Description

technical field [0001] The invention relates to a fast braking device and method, in particular to a fast braking device and method for an optical fiber screening machine. Background technique [0002] Various tests are required after fiber drawing to determine product quality and performance. There are several types of tests: optical property test, geometric property test and mechanical property test. Optical characteristic tests include: attenuation coefficient, bandwidth, cut-off wavelength, etc. Geometric properties tests include core diameter, cladding diameter, concentricity, roundness, fiber outer diameter and fiber length. Mechanical properties testing mainly refers to mechanical strength. In the production process of optical cables, the requirements for the mechanical strength of optical fibers are very strict. It directly affects the production situation of the optical cable and the service life of the optical cable. [0003] The mechanical strength test is ma...

AI Technical Summary

Problems solved by technology

When the motor is used to control parking, in order to make the motor output a large enough braking torque, it often requires a maximum rated power of tens of kilowatts, while the screening machine usually only needs a few kilowatts of rated power during normal operation. Braking will increase the installed capacity of the equipment, which is economical and not energy-saving; when braking is used, the existing method is generally to control the solenoid valve to drive the pneumatic brake pad after the fiber is cut. This method can reduce the installed capacity of the equipment, but in order to ensure fast and stable Brakes often output a large braking torque at one time, causing greater wear and damage to mechanical equipment and optical fiber discs

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