Embedded mold protection device based on wavelet passivation and image processing method thereof

Abstract

The invention discloses an embedded mold protection device based on wavelet passivation and an image processing method thereof. OMAPL138 serves as a hardware platform, the image processing algorithm conducts image preprocessing through graying and average filtering, and residues are highlighted through wavelet passivation; and then, the image processing algorithm judges whether the residues exist on an image subjected to wavelet passivation and thresholding or not through a support vector machine, and the accuracy is greatly improved.

Description

[technical field] [0001] The invention relates to an embedded mold protection device based on wavelet passivation and an image processing method thereof. [Background technique] [0002] With the development of industry, production automation is a main direction of industrial development. At the same time, it is necessary to take into account the safety and efficiency of production. However, the current process of plastic castings is: the controller of the injection molding machine controls the plastic mold to close the mold, and then injects it into the mold cavity. Inject hot-melt plastic liquid. After a period of time, the controller controls the mold opening, and then the thimble ejects the workpiece. In order not to damage the cavity and avoid flashing and deformation of the casting after the cavity is damaged, the injection molding machine There is usually a worker next to it. At this time, the worker has to check whether there is any residue in the mold cavity. After j...

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Problems solved by technology

[0002] With the development of industry, production automation is a main direction of industrial development. At the same time, it is necessary to take into account the safety and efficiency of production. However, the current process of plastic castings is: the controller of the injection molding machine controls the plastic mold to close the mold, and then injects it into the mold cavity. Inject hot-melt plastic liquid. After a period of time, the controller controls the mold opening, and then the thimble ejects the workpiece. In order not to damage the cavity and avoid flashing and deformation of the casting after the cavity is damaged, the injection molding machine There is usually a worker next to it. At this time, the worker has to check whether there is any residue in the mold cavity. After judging that there is no residue, operate the controller of the injection molding machine to perform secondary mold clamping. This method cannot guarantee the safety of workers, and it does not have industrial production automation.

[0003] At present, the general mold protection device is composed of an industrial computer specially used to run image processing algorithms, and a set of image acquisition and control equipment that transmits data between the industrial computer and the injection molding machine controller. Obtain image data with the control equipment, then run the residue judgment algorithm, and send the obtained results to the image acquisition and control equipment through the communication protocol. The image acquisition and control equipment then communicates with the injection molding machine controller according to the analysis results, and transmits the mold clamping reference signal. The method needs to install an industrial computer at the production site, which is costly and not suitable for the production site of large-scale injection molding machines, so there are certain limitations

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