Control system and method of continuous artificial plate hot press

Abstract

The invention discloses a control system and method of a continuous artificial plate hot press. The control system comprises a PLC (Programmable Logic Controller), a hydraulic cylinder, a displacement sensor, a pressure sensor, an amplifier, a control valve, and a computer or a touch screen which is connected with the PLC and provides a man-machine interface, wherein the PLC comprises a CPU (Central Processing Unit), a distributed type I / O (Input / Output) system, an analog quantity input module and an analog quantity output module; the analog quantity input module and the analog quantity output module are respectively connected with the CPU through the distributed type I / O system; the displacement sensor and the pressure sensor are respectively connected with the PLC; and the servo valve amplifier is respectively connected with a servo valve and the PLC. The control method disclosed by the invention adopts a correction program in the PLC to correct pressure and displacement deviation signals generated in a correction system; and hydraulic pressure and a position line of oil in the hydraulic cylinder in the system are controlled through the servo valve. The control system disclosed by the invention has the advantages of high reliability, strong interference resistance, easiness for programming, and high precision in thickness setting of an artificial plate.

Description

technical field [0001] The invention belongs to the field of continuous hot-pressing machine manufacturing, and particularly relates to a control system and a control method of a continuous hot-pressing machine for wood-based panels. Background technique [0002] Wood-based panel continuous flat pressing hot press represents the highest level of international wood-based panel production equipment. Among the existing wood-based panel production equipment such as medium density fiberboard and particleboard, continuous flat pressing hot press has become one of the most important equipment. one. In domestic fiberboard and particleboard production, the use of continuous flat-pressing heat presses has become a trend. [0003] The continuous hot press is the core part of the continuous flat press and hot press production line. At present, many continuous flat press and hot press parts use the industrial computer control system, which has high environmental requirements, complex pr...

AI Technical Summary

Problems solved by technology

Since the solenoid valve is a switch-type directional control valve, it can only control the movement direction of the fluid, but cannot control the flow rate of the fluid, thus reducing the thickness setting accuracy of the hot press.

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