共查询到19条相似文献,搜索用时 109 毫秒
1.
2.
现场注塑机注塑机液压系统故障的诊断,往往受现场条件的限制,并且在出现故障后要求尽快排除,以免影响施工进度。本文介绍几种现场注塑机注塑机液压系统故障诊断方法,供参考。 相似文献
3.
4.
介绍了注塑机电气控制系统的结构,说明了使用可编程控制器和触摸屏对注塑机传统电气控制系统进行改造的方法,分析了可编程控制器和人机界面在机电设备中的应用。改造后可满足各种类型注塑机的技术改造要求。 相似文献
5.
6.
注塑机的PCC控制系统 总被引:6,自引:0,他引:6
本文介绍了新型可编程计算机控制器(PCC)的特点、多任务处理的编程方式以及在注塑机控制上的应用,并对注塑机PCC控制系统的硬件构成和软件设计进行了重点介绍。 相似文献
7.
8.
9.
10.
基于PLC的注塑机控制系统改造 总被引:5,自引:0,他引:5
张文利 《机电产品开发与创新》2010,23(1):156-158
探讨了XS-ZY-125型注塑机的机电系统控制问题,介绍了PLC在注塑机控制系统改造中的应用;给出了梯形图。 相似文献
11.
对传统160型注塑机的液压系统进行适当改进,采用PLC替代继电器控制电路,实现自动控制,以提高液压系统的自动控制程度、可靠性和稳定性,大大提高注塑机的生产效率和自动化程度,减少了系统故障.具有一定的实用性. 相似文献
12.
Along with the tension in energy supply and the rise in price day by day, the demand of energy-saving plastic injection molding machine become bigger and bigger, many production enterprises turn to pay great attention to the research and develop of energy saving technology. At present, the technical content of the injecion molding machine has been upgraded unceasingly through the developing and innovating based on the general plastic injection molding machine. As for the innovation of energy saving in plastic injection molding machine, 相似文献
13.
通过对二板机与三板机移模方式进行比较,论述了二板机移模唧筒的结构设计过程,并对结构设计中的重点与难点进行了分析。 相似文献
14.
孙振强 《机电产品开发与创新》2012,25(1):171-173
塑料注塑成型机的诸多输入、输出参数中,料筒温度是工作过程中的重要被控参数。论文针对传统注塑机温控系统存在的超调量大、调节时间长等诸多不足,提出了以单片机为控制核心,应用模糊控制理论,设计出模糊控制器,实现注塑机温度的实时控制,对于提高注塑机温度控制精度具有较好的意义。 相似文献
15.
16.
17.
18.
Self-optimizing MPC of melt temperature in injection moulding 总被引:1,自引:0,他引:1
Dubay R 《ISA transactions》2002,41(1):81-94
The parameters in plastic injection moulding are highly nonlinear and interacting. Good control of plastic melt temperature for injection moulding is very important in reducing operator setup time, assuring consistent product quality, and preventing thermal degradation of the melt. Step response testing was performed on the barrel heating zones on an industrial injection moulding machine (IMM). The open loop responses indicated a high degree of process coupling between the heating zones. From these experimental step responses, a multiple-input-multiple-output model predictive control strategy was developed and practically implemented. The requirement of negligible overshoot is important to the plastics industry for preventing material overheating and wastage, and reducing machine operator setup time. A generic learning and self-optimizing MPC methodology was developed and implemented on the IMM to control melt temperature for any polymer to be moulded on any machine having different electrical heater capacities. The control performance was tested for varying setpoint trajectories typical of normal machine operations. The results showed that the predictive controller provided good control of melt temperature for all zones with negligible oscillations, and, therefore, eliminated material degradation and extended machine setup time. 相似文献
19.
SZ-250A型注塑机是一种中小型塑料注射成型机,它将颗粒状的塑料加热熔化到流动状,用注射装置快速、高压注入模腔,保压一定时间,冷却后成型为塑料制品。根据其工艺流程及工作控制要求,设计了以PLC为控制核心的控制系统,给出了此控制系统软硬件设计的全过程。通过实践使用证明,该控制系统具有快速、高效、高可靠性、抗干扰能力强等特点,实现了注塑机注塑全过程的自动控制。 相似文献