Pressure control system and method for pneumatic press

Abstract

The invention discloses a pressure control system and a pressure control method for a pneumatic press. The pressure control system comprises a position sensor, a pressure sensor, a programmable logic controller (PLC), an electromagnetic valve and a human-computer interface, wherein the position sensor is used for measuring the position information of a cylinder driving part and transmitting the information to the PLC; the pressure sensor is used for detecting the internal pressure information of a pressure welding body and transmitting the information to the PLC; the PLC is used for processing the information from the position sensor and the pressure sensor, communicating with the human-computer interface and outputting control instruction to the electromagnetic valve; the electromagnetic valve is used for executing the control instruction of the PLC to adjust the working parameter of the cylinder in the pneumatic press; and the human-computer interface is used for setting the working data of the pneumatic press and monitoring the pressure of the pressure welding body in real time, and inputting the preset data information to the PLC for storage. By adopting the pressure control system and the pressure control method, the pressure of the pressure welding body can be accurately controlled and maintained by the cylinder, so that the phenomenon of back tracking caused by overpressure or insufficient pressure is avoided.

Description

technical field [0001] The invention relates to the technical field of press control systems, in particular to a pressure control system and method for a pneumatic press. Background technique [0002] Pneumatic presses are easy to obtain because the working medium is air. In most applications, the gas can be directly discharged into the atmosphere, which will not pollute the environment and is easy to handle. Moreover, the compressibility of air can be used to store energy to realize centralized air supply and long-distance transportation. It has been widely used in various industries, especially in the field of industrial automation. In the pneumatic press, the cylinder is the most widely used actuator, and its pressure control is particularly important. The existing cylinder crimping technology is used to control the return stroke of the pneumatic press through the position control of the limit mechanism or the sensor during crimping. The pressure value is only directly r...

AI Technical Summary

Problems solved by technology

The existing cylinder crimping technology is used to control the return stroke of the pneumatic press through the position control of the limit mechanism or the sensor during crimping. The pressure value is only directly related to the input air pressure and the output force of the cylinder. This pressure control The system cannot realize the precise control and pressure maintenance of the pressure of the cylinder on the crimping body. For the crimping body, without pressure control, it is very easy to cause overpressure and insufficient pressure to return.

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