Injection molding mechanical arm mold anomaly detection method based on LMDO (Local Multilayered Difference Operator)

Abstract

The invention provides an injection molding mechanical arm mold anomaly detection method based on an LMDO (Local Multilayered Difference Operator). The anomaly detection method comprises the following steps: (1) acquiring a standard template image when an injection molding machine opens a mold in place, and pre-processing to obtain a later difference background image; (2) waiting for working state information of the injection molding machine; upon detection of a situation that the injection molding machine is operated until the mold is opened in place, continuously acquiring the image of a mold cavity by a camera, extracting an average image of the plurality of images, and pre-processing the average image to do preparation for subsequent image processing, thereby obtaining a later difference foreground image; and (3) carrying out an anomaly detection algorithm based on the LMDO on the difference foreground image and the difference background image to obtain an abnormal region without a light illumination interference part. The injection molding mechanical arm mold anomaly detection method based on the LMDO, provided by the invention, has the characteristics of good instantaneity, strong robustness on illumination variation and the like; and whether the mold has an abnormal state or not can be monitored through mold opening information of the injection molding machine.

Description

technical field

[0001] The invention relates to the injection molding machine industry in the field of industrial automation, and is an intelligent monitoring device for molds in the production process of an injection molding machine equipped with a manipulator. Background technique

[0002] In recent years, with the continuous expansion of the application field of plastic products, the demand for injection molding machines in the global manufacturing industry has shown a continuous and substantial increase. Modern injection molding machines are equipped with manipulators, which can imitate part of the functions of human arms, and can automatically take out injection molded products, so that they can be stacked, arranged and placed according to predetermined requirements. The manipulator is an automatic production equipment specially designed and developed for injection molding machines. It can reduce the heavy physical labor of workers, improve working conditions to ensure ...

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