Summary

Film surface defect online detection system is used to detect the common defects such as stains, mosquitoes, holes, impurities and other common defects in the production process of various thin film products. The system can timely find the defect information on the surface of the product in the production process, reflect the defect information on the surface of the production line in real time, and classify the defects, completely replacing the manual naked eye for defect detection. It greatly saves the production cost, improves the production efficiency and ensures the quality of the film.

Film defect detection system machine vision system

[Product background]

In the actual production process of the film, due to the influence of various factors, such as holes, mosquitoes, black spots, crystal points, scratches, spots and other defects appear on the surface of the film, which seriously affects the quality of the film and brings unnecessary losses to the manufacturers. The human eye can not judge the defects timely and accurately. The film surface defect detection system can detect the surface defects produced in the production process with high speed and accuracy, and display and identify all the surface defects on the film surface. It can detect the common surface defects such as dirty spots, stripes, damage, edge cracks, wrinkles, dark spots, bright spots, edge damage, black spots, hair, mosquitoes and other common surface defects with a diameter of 0.01mm-2mm.

Powerful surface defect pattern recognition function, according to the characteristics of surface defects, at the same time, it will point out the equipment and process problems that lead to the surface defects, guide workers to deal with them in time, so as to effectively save production costs and improve product quality. Therefore, the on-line defect detection system has become an indispensable detection equipment in high-speed film production line.

[Detection principle]

The whole system adopts the working principle of on-line image scanning of industrial CCD camera. Under the condition of high-speed production of the production line, the bright LED industrial linear light source with specific wavelength is used to irradiate the product surface (the reflection detection principle is used for opaque thin film products), and the product image at the light source is real-time scanned and collected through the industrial CCD camera.

The film image collected by the camera is processed by MVI image software algorithm. Because of the gray-scale difference between the image images of defects and the images of normal products, the system can accurately detect the defects of products; at the same time, according to the image characteristics of various defects and recording the defect database, online detection, classification and subsequent disposal of defects are realized.

[Defective pictures]

[System function]

1. Convenient operation

The operation is simple, just click "start" and "stop" to complete all operations.

2. High stability

It can work continuously in extreme temperature and plant environment.

3. 100% format surface inspection

When a defect is found, it can send an alarm according to the setting to prompt timely repair, so as to avoid a large number of defective products.

4. Complete surface quality information

The defect image of material surface is saved by computer. Each roll of product has complete defect image / position and quantity information. The product format edge can be automatically labeled as required.

5. High precision detection

The scheme can detect more than 0.02 square millimeter defects 100%, to meet the customer's continuous improvement of product quality requirements.

6. Software database management function

Accurate quality statistics can be made for each roll of material produced. Detailed defect record (size and location) and statistics provide convenience for production process and equipment state adjustment; offline analysis is used for subsequent slitting and quality management, which can effectively ensure product quality.

7. Positioning and identification function

For each roll of products produced, the system will automatically count the surface defects of this roll of products, and print out a statistical label, which will be pasted on each volume of products and distributed downstream along with the products. In this way, users can rate the products through the labels on each volume of products, so as to effectively use them to allocate different quality requirements.

8. System linkage

When the system detects the defect, it will give an audio-visual alarm, and other interlocking I / O outputs can also be added to the system.

9. One click export

One click export excel defect list, convenient for users to do further query, analysis, file.

Note: the software function can be completely customized according to user requirements!

[Technical index]

[Star customers]

Jingjiang Ruitai, Taixing Lianchuang, Huizhou Yidu, Sichuan Huili, Kunshan Futai, Shandong Qilu Petrochemical Co., Ltd

Henan Shuanghui, Taiwan Nanya plastics, Zhuhai Xingye, Hunan shuopu, 3M USA,

[Successful cases]