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What are the differences in the structure of the blow molding machine?

Views: 2     Author: Huan Machinery     Publish Time: 2021-04-29      Origin: Huan Machinery

1. Extrusion blow molding machine


Extrusion blow molding machine is a combination of extruder, blow molding machine and clamping structure, which is composed of extruder and parison die, inflation equipment, clamping structure, parison thickness control system and transmission structure. The parison die is one of the important parts that determine the quality of blow molded products. Generally, there are side feed die and center feed die. The storage cylinder type billet die is often used in the blow molding of large products.

extrusion blow molding machine manufacutre

2. Injection blow molding machine


The structure of the injection blow molding machine is mainly composed of the raw material plasticization injection part, the mold clamping part, the rotary table, the demolding device, the mold, the auxiliary device and the control system. The working process is to put uniformly mixed raw materials into the molding machine according to the requirements of the product molding material formula.

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After entering the barrel, the raw materials are melted, the screw is moved forward, the molten material is injected into the parison molding cavity of the mandrel to form, the parison is cooled, and then the mold blank is opened and blown to the lower half cavity of the station to close the mold , Is clamped by the mold, and compressed air is blown into the center hole of the mandrel at the same time to inflate the parison and close it to the cavity wall to become the shape of the product, and then the mold is opened after cooling and shaping; Rotate 120° to the demolding station, and the product is pushed out from the mandrel to complete the raw material plasticization, injection molding, inflation molding, cooling and demolding processes of the product.


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