Injection molding workpiece sink mark detection method and device based on image detection

Abstract

The invention discloses an injection molding workpiece sink mark detection method and device based on image detection, and the method comprises the steps: placing an injection molding workpiece on a detection conveyor belt according to a preset mode, and enabling the detection conveyor belt to drive the injection molding workpiece to move at a constant speed; carrying out image acquisition processing on the passing injection molding workpiece based on a plurality of camera devices fixedly arranged on the detection conveyor belt to obtain a plurality of acquisition images; contour extraction processing is carried out on the multiple collected images, fusion is carried out, and fusion contour information is obtained; pixel feature extraction processing is carried out on the multiple collected images, fusion is carried out, and fused pixel feature information is obtained; based on the fused contour information and the fused pixel feature information, sink mark detection processing is conducted on the injection molding workpiece, and a sink mark detection result is obtained. In the embodiment of the invention, the sink mark condition of the injection molding workpiece can be quickly and accurately detected, so that a technician can adjust the process parameters during injection molding according to the sink mark condition, and the yield of the injection molding workpiece is ensured.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a sink mark detection method and device of an injection molded workpiece based on image detection. Background technique [0002] Injection molding products (Injection molding products) refer to plastics that are heated, plasticized and melted by an injection molding machine, and then injected into the cavity of a molding mold for molding. Plastic injection molding machine has a wide variety of injection molding products and a wide range of applications. Especially in textile equipment and automobile manufacturing, there are various shapes of injection molding products as accessories; common process problems of injection molding products include injection molding sink marks The problem is that in the existing technology, the sink mark detection of injection molded products is generally carried out by means of manual sampling detection or computer vision. In the way of man...

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Problems solved by technology

[0002] Injection molding products (Injection molding products) refer to plastics that are heated, plasticized and melted by an injection molding machine, and then injected into the cavity of a molding mold for molding. Plastic injection molding machine has a wide variety of injection molding products and a wide range of applications. Especially in textile equipment and automobile manufacturing, there are various shapes of injection molding products as accessories; common process problems of injection molding products include injection molding sink marks The problem is that in the existing technology, the sink mark detection of injection molded products is generally carried out by means of manual sampling detection or computer vision. In the way of manual sampling, it is impossible to effectively remove injection molded products with sink marks from the finished product. It can be controlled with a certain probability; while the existing computational vision methods generally use a single camera device for identification, but due to special circumstances such as angles and lighting, it is often impossible to accurately identify the relevant sink marks. Accurate sink mark detection cannot be achieved

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