High Resolution Lens Detection Machine For PET Bottle Preform

Detection Principle

The pet preform is part of the production of the bottle, which is mainly processed by injection molding. It has the following characteristics :
1. The transparency is as high as more than 90%, the surface gloss is excellent, and it has a glass-like appearance.

2. Superior fragrance retention and good air tightness.

3. Excellent chemical resistance, it can resist almost all organic drugs led by acid.

4. No poisonous gas produced when burning.

5. Excellent strength properties, through biaxial stretching, various properties can be further improved.

Compared with other materials, pet has more obvious advantages and can play a role in the production of bottles such as reagents, medical insurance and beverages. The PET bottle preform defect detection machine produced by our company can effectively detect the black spots, bubbles, impurities, overlaps, and material shortage of bottle preforms, improve the quality of products, and ensure the interests of consumers.

Equipment Overviews

The overall equipment integrates mechanical mechanism, visual optical hardware and detection system software, defective product rejection and counting device. The normal detection speed is 70 pieces/min. The front end of the preform detection machine is directly connected to the conveyor line of the injection molding machine (The height of the conveyor line is adjustable from 960mm to 1380mm),to ensure that the products enter the inspection station in order, the equipment can be operated 7*24 hours a day, greatly improving the production efficiency.

The overall detection equipment is equipped with 10 sets of high-pixel industrial cameras to comprehensively detect the appearance defects of the outer side of the bottle preform, the opening of the preform and the bottom of the preform. After the system collects the sample image, the image processing software is compared with the standardized sample to determine the good product and the bad product. Good products are detected and defective products are automatically removed online, and the counting function can be realized after the finished product is detected, and the counting accuracy is 100%. The software will open the sample comparison standard, and the production personnel at the customer site can control the comparison accuracy and select the most suitable accuracy standard for their own production conditions, thereby controlling the defect rate.

Four double stations are used around the bottle preform: because the product is made of PET material, the four cameras are divided into two stations, each station is equipped with two cameras and two sets of backlight sources to complete the detection of the outer side of the bottle preform. The content contains black spots, air bubbles, stains, and oil stains with color difference.Four cameras are used for the preform opening: four detection stations for the preform opening, respectively, to detect the preform opening, and the detection content includes the lack of material, burrs, overlaps, stains and black spots in the preform opening.The detection of the preform support ring adopts a camera to detect the lack of material of the support ring.The detection of the bottom of the bottle preform uses a camera to detect the black spots and holes at the bottom of the preform.

Machining Process