针对传统注塑机溢流损失严重、电力消耗大等问题,提出了一种通过控制异步伺服电机转矩和转速,以实现对注塑机输出压力和流量进行控制的方案。在该电机控制的液压动力源中,采用了串联双齿轮泵的方案,以满足大型注塑机瞬时大流量输出的要求。通过压力与流量反馈形成闭环控制,提高了输出压力与流量的控制精度,并大大提升了注塑机液压系统的节能效果。设计了利用电控双泵液压系统对传统注塑机液压系统改造的方案,并通过实验验证了异步电机伺服泵控系统在注塑机上的节能效果。
Abstract
Traditional injection molding machine has inherent flaws of excessive power consumption and overflow loss. Aiming at these problems, this paper proposes a control strategy for injection molding machine's pressure and flow output, through torque and speed control of the asynchronous servo motor. In the hydraulic power source system, a series double gear pump structure is firstly designed to meet the large output requirement of instantaneous flow for large injection molding machines. The closed loop control is then presented to enhance output precision of pressure and flow, and improve energy saving effect of the injection molding machine hydraulic system. By conducting on field experiment, it is verified that the proposed electronically controlled double pump hydraulic system has superior performance compared with traditional injection molding machine hydraulic system, and introducing asynchronous servo motor pump control can greatly reduce energy consumption.
关键词
异步伺服电机 ;
双泵 ;
注塑机 ;
节能
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Key words
asynchronous servo motor ;
double pump ;
injection molding machine ;
energy saving
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基金
湖北省高等学校优秀中青年科技创新团队计划(T201936);武汉商学院科学研究项目(2020KY006)
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