带温度补偿的改进型注塑机锁模力传感器设计与实现  

Design and Implementation of an Improved Clamping Force Sensor for Injection Molding Machine with Temperature Compensation

作　　者：邓俊文 颜幸尧 胡美君[2] 陈潘布衣 聂德明 DENG Junwen;YAN Xingyao;HU Meijun;CHEN Panbuyi;NIE Deming(College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou Zhejiang 310018,China;Fair Friend Institute of Intelligent Manufacturing,Hangzhou Vocational and Technical College,Hangzhou Zhejiang 310018,China)

机构地区：[1]中国计量大学计量测试工程学院,浙江杭州310018 [2]杭州职业技术学院友嘉智能制造学院,浙江杭州310018

出　　处：《传感技术学报》2024年第1期1-7,共7页Chinese Journal of Sensors and Actuators

基　　金：浙江省教育厅科研项目(Y202250587)。

摘　　要：目前国内外注塑机行业所使用的实时在线锁模力传感器均为双侧半桥模式,且大部分不带哥林柱温度补偿功能,因此在精度、分辨率等性能上还有较大的提升空间。设计了一款双侧全桥并带哥林柱温度补偿的改进型注塑机锁模力传感器,并进行了上机验证。单个锁模力传感器主要由两片受力敏感片和两片不受力温度补偿片组成,每根哥林柱的两侧各使用一个传感器,组成双侧类全桥电路进行锁模力检测。实验结果表明,与目前行业普遍采用的双侧半桥模式锁模力传感器相比,本改进型传感器在不同锁模力载荷下,精度更高,线性度更好;四个通道的拟合决定系数R2均在0.9997以上,最大绝对误差为25 kN,最大相对误差为3.753%,最大锁模力重复性精度为2.430%。Strain gauges sensor is used widely to get real-time clamping force of injection machine,in most cases,two single strain gauge sensors are tied on each side of the tie bar to compose a half-bridge without temperature compensation.An enhanced clamping force sensor for injection molding machine with temperature compensation is constructed and tested.Two force sensitive sheets and two un-stressed temperature compensation sheets make up the majority of a single clamping force sensor.For the purpose of detecting clamping force,a double-sided full-bridge circuit is created using one sensor on either side of each tie-bar.The experimental results demonstrate that the improved clamping force sensor outperforms the widely used double-sided half-bridge mode clamping force sensor in terms of accuracy and linearity under a range of clamping force loads.The values of the coefficient R2 for the fitting of the four channels are all a-bove 0.9997,the maximum absolute error is 25 kN,the maximum relative error is 3.753%,and the maximum clamping force repeat-ability accuracy is 2.430%.

关 键 词：锁模力传感器 温度补偿 锁模力 应力测量 哥林柱 

分 类 号：TP212.12[自动化与计算机技术—检测技术与自动化装置]