Injection molding is the most common method for industrial production of plastic products, which can be used to process plastic products with complex structure and high geometric accuracy, and has the advantages of short production cycle, strong adaptability, high production efficiency and easy automation.

In the production process, due to raw materials, injection molding machine equipment, production environment and other complex and changeable factors jointly affect the quality of injection molding products, resulting in a variety of defects in the production process, common short shot, flash, cracks, warping, bubbles and other defects, these defects not only affect the appearance of the product, and seriously affect the performance of the product.

If many appearance defects are found through online assembly, the downstream finished products can be directly scrapped, and the cost rises sharply. Therefore, timely detection and removal of defective products is very important for quality control and cost control, and is also an important cornerstone for further upgrading of the manufacturing industry.

Surface quality inspection is mostly manual inspection, resulting in

1. Low detection efficiency;

2, does not meet the requirements of real-time, online, non-contact in modern industrial testing;

3, easy to be affected by the subjective will of the detection personnel, resulting in different results from person to person and from time to time;

4. Human omission will inevitably result in missed and wrong inspection of products.

Equipped with a performance-matching machine vision inspection system component, the machine vision inspection equipment can detect various surface defects for rapid, efficient and real-time detection, screen out defective products, and keep real-time records of the test results. The CCD industrial camera is used to capture the image of the product, and then converted into an image signal, which is transmitted to a special image processing system, and converted into a digital signal according to the pixel distribution and brightness, color and other information; The image system performs various operations on these signals to extract the features of the target, and then controls the equipment action in the field according to the discriminating results.

Test case

Product under inspection

Detection content

Gravure, shape size, circle diameter, height, flatness, missing parts, deformation

Detection equipment -- cloud disk high-speed visual inspection equipment: equipment that combines cloud computing and high-speed visual inspection technology, is used to quickly and accurately detect and analyze the appearance defects, features or attributes of the surface of an object. By connecting to a cloud server or cloud platform, the device uses cloud computing resources to accelerate the processing of image data for more efficient visual inspection and analysis. It is suitable for testing fasteners such as screws, nuts, lathe parts, stamping parts, injection parts, cold heading parts and fasteners that can be placed smoothly.

Foreign body detection

Bump detection

Missing part detection

High defect detection

Deformation detection