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With the rapid development of impregnated paper industry, the degree of automation of traditional horizontal dipping drying production line is not high, low efficiency, and the more backward control technologies, system drive roller line speed is not enough coordination, low cutting precision, large errors resulting in poor consistency of product length, complex operation becomes increasingly obvious shortcomings, which have become the bottleneck in the development of the the impregnated paper industry in China. Dry production line of horizontal dipping automated control, it is necessary to obtain a dry production line of horizontal dipping process to implement the Online adjust and control methods. The issues at home and abroad, the status quo, in-depth analysis of a Decoration Materials Co., Ltd. Changzhou City horizontal secondary impregnated dry production line control principle and on the basis of the production process, identify many of the problems that exist in the impregnated dry production line running, such as: (1) corresponding to each of the roller drive motor coordination, resulting in inconsistent line speed of the drive roller and not be able to view the real-time line speed of each roller, relies entirely on the workers' experience in adjusting the drive motor; (2) Cut institutions asynchronous motor by variable frequency control, driven by a chain drive shears rotation, low cutting precision, large errors, and can not achieve positioning (the color) Cut; (3) adjusting deviation institutions of offset low efficiency, high failure rate big noise; (4) production line operation is complex, labor intensity. Analysis of these issues, and thus on the horizontal secondary impregnated dry production line of offset and the entire control system of the new design. Improvements are as follows: (1) programmable logic controller (Programmable Logic Controller-PLC) via RS485 communication module to achieve precise control of each inverter roller linear velocity in the human-computer interface, real-time display and adjustable to ensure that each roller barrel coordinated operations; (2) shear knife driven by a servo motor, PLC controlled by the positioning module servo unit, cutting precision, and added color sensors, with the completion of the shearing blade positioning shear; (3) improve the tone the partial transmission mechanism of offset by small power permanent magnet synchronous motor drive, ball screw Coronel Mesquita tune partial power is transmitted to the tune partial roll, improve the efficiency and accuracy of offset, reducing the failure rate, and eliminate the noise; (4) add a human-machine interface, HMI display and set various parameters, and the fan variable frequency parameter setting formula, greatly reduce labor intensity. This project is the integrated use of modern control parts of the PLC, servo module, inverter, encoder, touch screen, the the horizontal secondary impregnation drying process PLC control core automated production to solve the existing problems in the original production line use and deficiencies, the production line is simple to operate. Compared to the original production line, system stability, flexibility, degree of automation has been improved, and to adapt to a wider range of production lines, and greatly reduce scrap, improve the precision and quality of the impregnated paper, and bring considerable economic benefits to the enterprise to improve the market competitiveness of the products to meet different levels of customer demand.
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