System and method for injection molding process monitoring and plastic part on-line quality sorting

Abstract

The invention discloses a system and method for injection molding process monitoring and plastic part on-line quality sorting, belongs to the field of nonmetal processing and relates to plastic molding processing, in particular to the processing technology of injection parts. By means of the system and method for injection molding process monitoring and plastic part on-line quality sorting, plastic part on-line quality sorting is achieved, the problem of the unstable process caused by the unstable control over the gate opening-closing point of a hot runner valve gate mold is solved, and the problem of the unstable process caused by the unstable switching point of an injection molding machine VtoP is solved. According to the system and method, the stability of the injection molding process is improved; real time monitoring and on-line quality sorting of plastic parts are achieved, and the quality is 100% guaranteed. The invention discloses the system and method for injection molding process monitoring and plastic part on-line quality sorting. Hardware comprises a monitor host, a plurality of sensors connected through a controller area network (CAN) bus and a multi-functional module. Monitoring software comprises system start-up initialization and hardware detection, an operation initialization module, a multi-functional module initialization module, a sensor initialization module, a process curve periodogram module, a change trend module for process variables, a production data statistical table module, a current period process variable table module, a VtoP switching control module, a valve gate control module and a quality sorting module.

Description

technical field [0001] The invention belongs to the field of non-metal processing and relates to plastic molding processing, in particular to the processing technology of injection molded parts. Background technique [0002] The original application "A Monitoring Device for Injection Molding Process"; application number: 201320604316.2; the utility model application was rejected because of the method. [0003] In the prior art, when plastic parts are injection molded, the quality of the plastic parts is generally guaranteed by monitoring the process parameters on the injection molding machine. Due to some changes in the injection molding machine, the mold itself and the surrounding environment, the process is unstable and the yield rate is low. low; at the same time, unqualified products are often produced without changing the process parameters on the injection molding machine; a lot of manual selection of unqualified products is required; some quality defects (such as stre...

AI Technical Summary

Problems solved by technology

[0004] The technical problems to be solved by the present invention are: the problem of online quality sorting of plastic parts; the problem of unstable control of the gate opening and closing point of the hot runner valve gate mold, resulting in an unstable process; the unstable switching point of the VtoP of the injection molding machine, resulting in The problem of unstable process, improve the stability of injection molding process, realize real-time monitoring and online quality sorting of plastic parts, 100% quality assurance

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