碎纸屑压块机的plc控制.doc

碎纸屑压块机的PLC控制 PAGE 第 PAGE 8 页 碎纸屑压块机的PLC控制 摘 要 本文综述了压块技术的国内外的发展现状，以及压块技术在国内外的发展前景，描述了碎纸屑压块机在国内的应用潜力。 碎纸屑压块机是将废纸屑按一定比例参合特殊液体后压成规则的长方体。该控制系统可将废纸屑进行分类压缩，提高其自动化的程度以及充分发挥其经济效益。该论文先对液压系统进行设计以方便PLC的设计，然后对PLC控制系统进行设计，尽量使其操作简单、压块的效果好、自动化程度高、并且能够实现双通道的独立工作。自动化程度高及改进后的压缩分类是PLC原理图突出的重点。当在工作的过程中遇到一些故障时能自动发出报警声，自动停止运行，方便操作人员及时查找原因而不会损坏机器。 通过设计我们使该碎纸屑压块机实现了将不同废旧程度废纸屑分类进行处理，很大程度上提高了其经济效益，从而实现了废旧纸屑的多次利用。目前，在中国每年大量的废纸屑没有得到很好地利用，究其根本原因就是技术不够先进或者说经济效益不够显著。 关键词： 碎纸屑 ； 液压系统 ； PLC系统 The PLC control of the useless paper press machine Abstract The thesis summarized the actuality and the technology of dealing with the useless paper 、useless package according to the paper characteristic and present situation in heat and chest-making enterprises.Useless paper press machine according to the certain proportion of participants, such as special liquid into rules of the cuboid. The control system can classify useless paper scraps and make them compressed, increase the degree of automation, as well as economic benefits. The compressed machine mainly on the design of the PLC control system, make it simple, as far as possible, effective and high degree of automation of the press as well as for a variety of different hardness of waste paper scraps. High degree of automation is the focus of PLC schematic diagram highlights. The automatic alarm will work when you encounter some failure ,and the machine will automatic stop, which will be convenient operation with timely finding the reason in case damaging the machine. By design we make the useless paper press machine to achieve a high degree of different waste classification of waste paper processing, to a large extent, improve the economic benefit. Useless paper press machine had not been widely applied because of the economy and the benefits are too low. Only the invention that have economic benefits will be applied in real life. Keywords: useless paper ; hydraulic system ; PLC system