Appearance inspection is a crucial part of the manufacturing process for plastic products. Since plastic products come in a wide variety of sizes and shapes, detecting their appearance quality requires an efficient and accurate solution. In this paper, we will introduce a system for inspecting the appearance of plastic products based on machine vision technology and describe its advantages, the optical accessories used and why it is important to inspect the appearance of plastic products.

I. Advantages of testing the appearance of plastic products

Plastic products appearance inspection system adopts machine vision technology, which has the following significant advantages:

High precision and efficiency: the system acquires surface images of plastic products through high-resolution industrial cameras and utilizes image processing algorithms for defect detection, size measurement and positioning. This greatly improves the inspection accuracy and efficiency, and reduces the subjectivity and error of manual inspection.

Automation and Intelligence: The system can realize automated inspection, reduce labor costs and improve production efficiency. At the same time, the intelligent image processing algorithm can automatically identify and classify surface defects, greatly reducing the subjectivity of manual intervention and judgment.

Repeatability and consistency: As the machine vision technology has a high degree of consistency and repeatability, the inspection results are stable and reliable, ensuring the consistency of product quality.

Strong expandability: with the continuous development and progress of machine vision technology, the system can be continuously upgraded and improved to adapt to more complex and higher requirements of plastic products inspection tasks.

II. Application of optical accessories in the appearance inspection of plastic products

In order to obtain high-quality surface images, plastic product appearance inspection systems require the use of a series of key optical accessories, including cameras, light sources and lenses.

Color multi-million industrial cameras: High-resolution industrial cameras are key components for obtaining clear surface images, which can capture details and defects on the surface of plastic products and provide a reliable data source for subsequent image processing.

Shadowless bar light source: The light source and light angle can highlight defects on the surface of plastic products, thus improving the accuracy and reliability of inspection.

Eight-million industrial lens: The appropriate focal length and aperture size of the lens can obtain a clear surface image while controlling factors such as depth of field and distortion.

III. Why test the appearance of plastic products

Plastic products are ubiquitous in our daily lives, from packaging materials to medical devices to automotive parts. Therefore, it is crucial to ensure the appearance quality of plastic products. By inspecting the appearance of plastic products, problems such as surface defects and dimensional errors can be detected, thus improving product quality and meeting customer requirements.

In addition, appearance inspection can also help manufacturers find and solve problems in time during the production process, reduce scrap rate and lower production costs. With the increasing demands of consumers on product quality and the intensification of market competition, appearance inspection has become an indispensable part of the manufacturing process of plastic products. By adopting machine vision-based appearance inspection systems for plastic products, manufacturers can ensure the high quality, consistency and reliability of their products, and thus stand out from the fierce competition in the market.