What is the difference in the structure of the blow molding machine?

1. Extrusion blow molding machine Extrusion blow molding machine is a combination of extruder, blow molding machine and mold clamping mechanism. It consists of extruder and parison die, blow molding equipment, mold clamping mechanism, parison thickness control system and transmission mechanism. The blank die is one of the important parts that determines the quality of blow molded products. Generally, there are side feed dies and center feed dies. Regenerative parison dies are commonly used in blow molding of large products. 2. Injection blow molding machine The structure of injection blow molding machine is mainly composed of raw material plasticizing injection part, clamping part, turntable, demoulding device, mold, auxiliary device and control system. The working process is to put the evenly mixed raw materials into the molding machine according to the requirements of the product molding material formula. After entering the barrel, the raw material is melted, the screw moves forward, and the melted material is injected into the parison forming cavity of the core mold to form. At the same time, the compressed air is blown into the center hole of the core mold, so that the parison is blown and tightly adhered to the cavity wall to become the shape of the product. After cooling and forming, the mold is opened; the product is rotated 120 degrees with a rod to release Mold station, and then push the product out of the mandrel to complete the raw material plasticization, injection molding, inflation molding and cooling, demoulding process.
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