Extrusion mold used for shaping of plastic pipe

Abstract

The invention discloses an extrusion mold used for shaping of a plastic pipe. The extrusion mold includes a mold body assembly, a shaping assembly and a divider assembly, wherein the mold body assembly includes a mold body, a machine head body and a rubber plug. The rubber plug is fixedly installed on the left end of the mold body. The machine head body is arranged on the right end of the mold body and is fixedly connected to the mold body. The shaping assembly includes a shaping sleeve, a bush die, and a core rod, wherein the shaping sleeve is arranged at the right side of the rubber plug andis fixedly connected to the mold body. An annular groove hole is arranged in one side, which is closed to the divider, of the right end of the machine head body. An electric heating wire is attachedto the inner surface of the annular groove hole and heats the interior of the machine head body, so that internal temperature of the divider is increased, and when molten plastic flows through the divider, the melt is further heated and plasticized so that the melt is distributed uniformly. The extrusion mold can avoid the problems of non-uniform thickness or rough surface of a plastic product dueto insufficient temperature during flowing of the melt.

Description

technical field [0001] The invention belongs to the technical field of plastic pipes, and in particular relates to an extrusion die for forming plastic pipes. Background technique [0002] Extrusion molding is also called extrusion molding in plastic processing. In the processing of non-rubber extruders, the extrusion of the mold itself using hydraulic pressure is called extrusion, which means that the material passes through the action between the extruder barrel and the screw. Plasticized by heat, the side is pushed forward by the screw, and a processing method that continuously passes through the machine head to make various cross-section products or semi-finished products. The forming mold, also called the mold, is made in proportion to the shape and structure of the object. Mold, a tool that makes material into a certain shape by pressing or pouring. [0003] In the original molding extrusion die, when the plastic melt flows through the shunt, the temperature may be in...

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Problems solved by technology

[0004] The object of the present invention is to provide an extrusion die for molding plastic pipes, to solve the problem that the original extrusion die for molding proposed in the above-mentioned background technology may cause problems due to insufficient temperature or melt flow when the plastic melt flows through the flow divider. There are impurities inside the body, resulting in uneven thickness or rough surface after the product is formed

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