安装扭矩对抱箍式锁模力仪测试结果影响的研究  

Research on the Influence of Installation Torque on the Test Results of the Clamp Type Locking Force Tester

作　　者：胡美君[1] 颜幸尧 邓俊文 陈潘布衣 聂德明 HU Meijun;YAN Xingyao;DENG Junwen;CHEN Panbuyi;NIE Deming(Fair Friend Institute of Intelligent Manufacturing,Hangzhou Vocational and Technical College,Hangzhou Zhejiang 310018,China;College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou Zhejiang 310018,China)

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

出　　处：《传感技术学报》2024年第7期1250-1257,共8页Chinese Journal of Sensors and Actuators

基　　金：浙江省教育厅科研项目(Y202250587);国家自然科学基金项目(11972336)。

摘　　要：注塑机锁模力监测系统主要用于在三板式注塑机中对锁模力的实时监测,以控制产品质量和防止设备的损坏。其中抱箍安装方式的锁模力实时监测仪由于价格低,安装可靠性高等特点,被广泛采用。在实际使用中,抱箍式注塑机锁模力传感器信号的准确度,在一定范围内与所施加的抱紧力(安装扭矩)有一定相关性,对后期维护会有较大影响。对抱箍式传感器在使用中的受力情况进行了分析,根据硅胶需要满足和格林柱之间无滑移的测试条件,分析了硅胶上的拉伸摩擦力以及正压力必须满足的条件,并根据传感器头的安装结构,推导了满足硅胶受力条件时,抱箍收紧时所需的理论最小扭矩公式,最后基于自行研发的抱箍式注塑机锁模力监测仪,进行了实验。实验结果表明,在扭矩较小时(100%理论最小扭矩),抱紧力的大小对测试结果影响很大;当抱紧力达到一定阶段后(150%最小理论扭矩),测试结果趋于稳定;当抱紧力达到一定值后(≥200%最小扭矩),测试结果的精度基本不再变化。In the three plate injection molding machine,the injection molding machine locking force monitoring system is mainly used for real-time monitoring of the locking force to control product quality and prevent equipment damage.The locking force real-time monitoring instrument of the clamp installation method is widely used due to its low price and high installation reliability.In practical use,the accuracy of the locking force sensor signal of the clamp type injection molding machine has a certain correlation with the applied clamping force(installation torque)within a certain range,which will have a significant impact on later maintenance.The force situation of the clamp type sensor in use is analyzed.Based on the testing condition that silicone needs to meet the non-slip condition between the silicone and the Green column,the tensile friction force on silicone and the conditions that positive pressure must be met are analyzed.Based on the installation structure of the sensor head,the theoretical minimum torque formula required for tightening the clamp when the silicone force condition is met is derived,Finally,experiments are conducted based on the self-developed clamp type injection molding machine locking force monitoring instrument.The experimental results show that when the torque is small(100% of the theoretical minimum torque),the magnitude of the gripping force has a significant impact on the test results,when the gripping force reaches a certain stage(150% of the minimum theoretical torque),the test results tend to stabilize,when the gripping force reaches a certain value(≥200% minimum torque),the accuracy of the test results basically no longer changes.

关 键 词：注塑机 锁模力测试仪 抱箍式 安装扭矩 硅胶受力分析 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]