Novel extrusion forming mould for plastic pipes

Abstract

The invention discloses a novel extrusion forming mould for plastic pipes. The novel extrusion forming mould for plastic pipes structurally comprises a mold core, an injection molding cavity, an operation handle, bolts, buffers, a connecting pipe, a product tray, a thickened ring, a fastening ring and a rotating shaft. Each buffer is composed of an outer pipe, a collision head, a sound attenuationsleeve, a mandrel, a check valve, a spring and a piston. According to the novel extrusion forming mould for plastic pipes, processing extrusion force borne by the collision heads is converted into and released through work of four cycles of an intake stroke, a compression stroke, an expansion stroke and an exhaust stroke of the pistons; and the springs have a buffering effect, the springs are pressed down in the processing and extruding process of the mold and are recovered into the original shape after extruding is stopped, the elastic property is high, redundant pressure is released, and pressure output is controlled effectively.

Description

technical field [0001] The invention is a novel plastic pipe extruding mould, which belongs to the technical field of mold equipment. Background technique [0002] Extrusion mold is the core part of extrusion production. The technical status of extrusion mold is directly related to the stability of extrusion production, the quality of extruded products, the efficiency of extrusion production and the service life of the mold itself. Therefore, the design of the extrusion die is very important. [0003] The prior art discloses an application number of CN01262459.4 for a new type of plastic pipe extrusion molding die, which is provided with a connecting sleeve and a die cover, and a transition body is connected between the connecting sleeve and the die cover. The connecting sleeve, the transition body, The cavity of the die head cover forms the channel for the material to enter and exit. A mandrel is set in the passage for the material to enter and exit. The mandrel and the di...

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a new type of plastic pipe extrusion molding die to solve the problem that the pressure output cannot be effectively controlled when the plastic pipe is processed and extruded, and the plastic pipe is prone to deviation, and the pressure is small. It is easy to wrinkle, and the plastic pipe will bounce off the mold if the pressure is too high, or even crack, which will bring trouble to the production work

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