Working mechanism of electric control system for plywood hot press machine
The electronic control system of the plywood hot press machine is the core control unit of the hot press machine, which directly affects the accuracy of the hot pressing process and the reliability of equipment operation. Traditional hot press machines often use relay control, which has problems such as complex circuits and high failure rates. Modern hot press machines generally use PLC (Programmable Logic Controller) instead of traditional relays to achieve automation and intelligent control.
The PLC electronic control system receives sensor signals (such as temperature, pressure, displacement, etc.) through input modules, processes them through internal programs, and outputs control instructions to drive hydraulic valves, heating devices, and other actuators. For example, when the hot press plate is closed, the PLC controls the inlet and outlet of the hydraulic cylinder according to the preset pressure value, achieving precise positioning and pressurization of the pressure plate; During the pressure holding phase, real-time monitoring of pressure sensor data is used to dynamically adjust the opening of the solenoid valve to maintain pressure stability. In addition, PLC can integrate safety functions such as overpressure protection and misoperation interlock. When the pressure exceeds the set threshold or the pressure plate is in a non safe position, the system automatically cuts off the power source and alarms.
The electronic control system is also equipped with a human-machine interaction interface (HMI), where operators can set process parameters (such as temperature, time, pressure curve) through a touch screen and monitor equipment status in real time. The modular design of PLC supports flexible expansion, such as connecting with the factory MES system through communication interfaces to achieve remote collection and analysis of production data, further enhancing the intelligence level of production management.
