Glass calender compression bar pressure automatic control system

Abstract

The invention discloses a glass calender compression bar pressure automatic control system. The system comprises a programmable logic control system part, a pressure sensor and a compression bar device part. The programmable logic control system part comprises a human-computer interface, a PLC and an analog input module, and the human-computer interface and the analog input module are connected to the PLC; the compression bar device part comprises a frequency converter, a compression bar motor and a compression bar device, the frequency converter controls positive or negative rotation of the compression bar motor, and the compression bar motor controls the compression bar device to act on a compression roller; the pressure sensor is arranged on the compression bar device, and used for sensing the pressure value acted on the compression roller by the compression bar device; the pressure sensor is connected to the analog input module, the sensed pressure value is fed back to the PLC, and the frequency converter is in communication with the PLC through an industrial ethernet bus PROFINET. The glass calender compression bar pressure automatic control system achieves automatic control over pressure of the compression bar, and improves reliability, stability and easy-controllability of the pressure control system.

Description

technical field [0001] The invention relates to an automatic control system for pressure rod pressure of a glass calender, which belongs to the field of glass machinery. Background technique [0002] The current photovoltaic glass production line has high requirements on the uniformity of glass thickness. The pressure of the pressure rod of the calender on the pressure roller is an important measure to ensure the uniform thickness of the glass. It needs good reliability, stability and easy control. sex. However, at present, the pressure control of the pressure rod needs to be manually judged and analyzed according to the thickness of the glass liquid or the quality of the produced glass products, and then the pressure of the pressure rod is adjusted. The pressure adjustment belongs to an open-loop control system, and this control method has serious lag Sexuality, low efficiency, low reliability, and poor stability affect the pass rate of glass products. Therefore, it is ne...

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Problems solved by technology

However, at present, the pressure control of the pressure rod needs to be manually judged and analyzed according to the thickness of the glass liquid or the quality of the produced glass products, and then the pressure of the pressure rod is adjusted. The pressure adjustment belongs to an open-loop control system, and this control method has serious lag Sexuality, low efficiency, low reliability, and poor stability affect the pass rate of glass products

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