Automatic regulating system for inter space between medium-pressure belt and hot plate for corrugated paper production line

Abstract

The invention discloses an automatic regulating system of a clearance between a press belt and a heating plate used in a corrugation product line, which comprises a hydraulic valve used for controlling work of an elevating mechanism of a press roll, a displacement sensor, a data acquisition module, a PLC programmable controller, and a contactor, wherein, the displacement sensor is equipped at the position which can reflect fluctuation changes of the press roll, collects in real time the information between the press belt and the heating plate and converts the information into an electrical signal which is transferred into the data acquisition module. The data acquisition module delivers the collected signal to the PLC programmable controller. The PLC compares the pre-set clearance data and the collected clearance data. The compared result is given to the contactor as an instruction. The working state of the hydraulic valve is controlled by the contactor. The automatic regulating system can automatically regulate the clearance between the press belt and the heating plate and guarantee that the clearance is in an applicable range so as to reduce the waste.

Description

technical field [0001] The invention relates to corrugated production equipment, in particular to an automatic adjustment system for the gap between a pressing belt and a hot plate in a corrugated production line. Background technique [0002] Multi-layer corrugated paper is made of several single-layer corrugated papers. Several single-layer corrugated papers and another layer of corrugated paper or face paper enter between the pressing belt and the hot plate for lamination. The gap between the pressing belt and the hot plate is directly related. In terms of the lamination quality, if the gap between the pressing belt and the hot plate is too large, the bonding between the layers will be poor and degummed, forming a false bond and directly producing waste products; if the gap between the pressing belt and the hot plate is small , It will cause collapse and also fail to reach the strength and shock resistance of corrugated paper. Therefore the appropriate control of the gap...

AI Technical Summary

Problems solved by technology

[0002] Multi-layer corrugated paper is made of several single-layer corrugated papers. Several single-layer corrugated papers and another layer of corrugated paper or face paper enter between the pressing belt and the hot plate for lamination. The gap between the pressing belt and the hot plate is directly related. In terms of the lamination quality, if the gap between the pressing belt and the hot plate is too large, the bonding between the layers will be poor and degummed, forming a false bond and directly producing waste products; if the gap between the pressing belt and the hot plate is small , will cause collapse and also fail to reach the strength and shock resistance of corrugated paper

Therefore the appropriate control of the gap is the key to whether the product can be qualified. The current technical measure to control this gap is to determine whether the gap is suitable by manually measuring the corrugated cardboard finished product. This measure has its weak point: it is found that there is no When qualified products, a large number of non-conforming products have been produced

In the production process, the gap between the pressure roller and the hot plate determines the gap between the pressure belt and the hot plate, and the lifting of the pressure roller is completely dependent on the promotion of the hydraulic cylinder. Due to the compressibility of the hydraulic oil itself, in addition The cumulative error changes of some intermediate transmission components lead to uncertainty, inaccuracy and unintuitiveness of each adjustment. Therefore, the current corrugated paper production equipment has a high scrap rate due to the inconvenience of this adjustment.

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