Overall structure of PC/ABS extrusion

Molding is a process in which materials are processed through extruders and extrusion dies for heating, plasticizing, homogenizing, extruding, conveying, forming, and shaping to make them usable products. The main equipment of the extrusion molding production line generally includes three parts: extruder (main machine), auxiliary equipment (auxiliary machine) and extrusion die, among which the extrusion die is the core part of the extrusion production line. , physical and chemical properties, extrusion efficiency, etc. have a certain or decisive impact. The extrusion die is mainly composed of a die head, a calibrating die, and a water tank.

(1) In terms of the shape design of the flow channel of the die head, the design of the flow channel can be optimized by optimizing the design of the flow channel so that the shape of the flow channel can achieve a smooth transition effect, effectively preventing the occurrence of paste and dark marks.

(2) For the cross-sectional parison with a small profile cavity and a weak vacuum degree inside the cavity, the vacuum strength can be increased by connecting the vacuum cavity with multiple vacuum holes, and multiple holes with the adsorption groove, so that the parison It fits more closely with the cavity surface of the mold, and the molding size is more accurate.

(3) A new comprehensive cooling method composed of air, oil and water is adopted. For PC/ABS materials, it can effectively solve the problems of difficult traction, irregular molding, and poor surface quality caused by excessive cooling speed of the parison in the shaping mold. .

(4) The PC/ABS profile mold design is reasonable, and the final product size meets the requirements.

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