Mould pressing paperboard hydro-forming control system based on PLC

Abstract

The invention relates to a mould pressing paperboard hydro-forming control system based on a PLC. The mould pressing paperboard hydro-forming control system based on the PLC comprises a PLC control terminal, a hydraulic speed control module, a screening module, a reference threshold module and an output judgment module; the PLC control terminal stores a low-speed hydraulic database corresponding to the low-speed pressing of the paperboard, stores a medium-speed hydraulic database corresponding to the medium-speed pressing of the paperboard, and stores a high-speed hydraulic database corresponding to the high-speed pressing of the paperboard; the reference threshold module is pre-set with critical pressing speed thresholds corresponding to low-speed pressing, medium-speed pressing and high-speed pressing separately; and the output judgment module is configured to determine whether the paperboard pressing speed of the hydraulic speed control module is less than the critical pressing speed threshold corresponding to the pressing speed in real time. According to the invention, through comparing with the corresponding hydraulic speed threshold by the output judgment module in real time,the pressing processing of the paperboard can be stopped in time once the hydraulic speed is greater than the pressing speed required for the corresponding paperboard; therefore, the quality reduction of the paperboard after pressing can be reduced.

Description

technical field [0001] The invention relates to the technical field of computer control systems, in particular to a PLC-based hydraulic forming control system for molded cardboard. Background technique [0002] In the process of pressing and forming the existing cardboard, according to different cardboards that need to be pressed, the pressing speed required for the cardboard is generally divided into low-speed pressing, medium-speed pressing and high-speed pressing. Therefore, in the process of pressing the cardboard , the hydraulic system needs to provide hydraulic speeds corresponding to low-speed pressing, medium-speed pressing and high-speed pressing, but there is a certain critical threshold for the pressing speed of different cardboards. Once the provided hydraulic speed exceeds the critical threshold, it is easy to cause The cardboard is damaged during the pressing process, which in turn reduces the quality of the produced cardboard. Contents of the invention [0...

AI Technical Summary

Problems solved by technology

[0002] In the process of pressing and forming the existing cardboard, according to different cardboards that need to be pressed, the pressing speed required for the cardboard is generally divided into low-speed pressing, medium-speed pressing and high-speed pressing. Therefore, in the process of pressing the cardboard , the hydraulic system needs to provide hydraulic speeds corresponding to low-speed pressing, medium-speed pressing and high-speed pressing, but there is a certain critical threshold for the pressing speed of different cardboards. Once the provided hydraulic speed exceeds the critical threshold, it is easy to cause Damage to the cardboard during the pressing process, which in turn reduces the quality of the produced cardboard

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