Large PP transfusion bottle blank die based on three-flap type glue feeding

Abstract

A large PP transfusion bottle blank die based on three-flap type glue feeding comprises a nozzle tip (2), a nozzle sleeve (3), an injection chamber (5), a die lip (6), an injection core sleeve (7), an injection core and a valve needle (1); the nozzle tip (2) is sleeved by the nozzle sleeve (3); the lower part of the nozzle sleeve (3) is cooperated with the top of the injection chamber (5); the injection core (8) is disposed in the injection core sleeve (7); a through hole (11) is disposed in the nozzle tip (2); the inner wall at the center of the through hole (11) is uniformly provided with at least three valve-needle guide bosses (12); the valve needle (1) penetrates the through hole (11) in the nozzle tip (2) and is cooperated with the valve-needle guide bosses (12); each the space between every two adjacent valve-needle guide bosses (12) and the valve needle (11) forms a glue feeding channel (10). The large PP transfusion bottle blank die based on three-flap type glue feeding has the advantages of simple structure, precision cooperation between the valve needle and the nozzle tip, effectively reduced nozzle tip temperature and saved energy.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to a PP large infusion bottle preform mold based on three-lobed glue feeding. Background technique [0002] The injection molding quality of the infusion bottle is closely related to the mold design and manufacture. The success or failure of the infusion bottle processing depends largely on the mold design effect and the mold manufacturing quality. The structural elements to be considered in the mold design are as follows: 1. Surface: that is, the contact surface between the die and the punch when the mold is closed, its position and form selection, the shape and appearance of the product, wall thickness, molding method, post-processing technology, mold type and structure, demoulding Influenced by factors such as method and molding machine structure; 2. Gating system: that is, the feeding channel from the nozzle of the injection molding machine to the cavity, including the main chann...

AI Technical Summary

Problems solved by technology

[0003] The traditional infusion bottle mold adopts single-point glue injection, and the glue is injected from the tip into the injection cavity. When injecting glue, the temperature of the tip is high, the energy consumption is large, and the service life of the tip is reduced, and the rate of wear of the tip is accelerated. As the production time increases, the coordination between the nozzle tip and the valve needle decreases, and the precision of the coordination also decreases, which affects product quality

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