Blow Molding is the prepared by the extrusion or injection, and is still in a plasticized state tubular or sheet stock material is fixed to the mold in the trend, and immediately pass into the air, forcing the billet expands and affixed to the surface of the mold cavity wall After releasing the mold after cooling stereotypes, that was a processing method desired hollow article. Suitable for blow molding of plastic high-pressure polyethylene, low-pressure polyethylene, rigid PVC, soft PVC, polystyrene, polypropylene, and polycarbonate. Depending on the preform molding method, extrusion blow molding is divided into injection blow molding and blow molding of two. Advantages of extrusion blow molding extruders and extrusion blow mold of simple structure is not in place to prevent mold thimble, the disadvantage is the parison wall thickness is inconsistent, likely to cause uneven thickness of plastic products. The right is extrusion blow molding Schematic. Advantages injection blow molding parison wall thickness is uniform, no flash, since the injection mold parison with bottom visual monitoring and protection, so the bottom of the hollow article will not fight and joints, not only beautiful and high strength. The disadvantage is the price of molding equipment and molds used expensive, so this molding method is used for the mass production of small hollow articles, in the absence of the use of a wide range of extrusion blow molding method. Visual inspection is to use machines instead of human eyes do measure and judge. Visual inspection means to be ingested by machine vision products (ie, the image pickup device, two kinds of sub-CMOS and CCD) target is converted into an image signal sent to a dedicated image processing system, according to the pixel distribution and brightness and color information into The digitized signal; imaging systems for various operations on these signals to extract target features, and then based on the results of determination to control the scene equipment movement. It is a valuable mechanism for the production, assembly or packaging. It is invaluable in detecting defects and prevent defective products are delivered to the consumer in terms of functionality. Die visual monitoring and protection, mold, Sheng Ding instrument (Views) provided by the Dongguan City Ding Sheng Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) (www.dgshengding.com) Dongguan, Guangdong, dedicated instrumentation leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Sheng Ding instrument in leadership with the staff warmly welcome all inquiries negotiations to create Shengding instrument better future.