Quick shut-off liquid pneumatic nozzle

Abstract

The invention discloses a rapid shut-off liquid pneumatic nozzle, which comprises a nozzle body, a rubber material channel and a valve needle are arranged in the nozzle body, the rubber material outlet is arranged at the front end of the rubber material channel, and the rubber material inlet is arranged at the rear end; the valve needle The front end is provided with a first sealing part, and the first sealing part seals the rubber outlet when the valve needle moves along the rubber channel to the rubber outlet; a second sealing part is set inside the rubber channel, and the second The glue sealing part includes a glue sealing surface, and the glue sealing surface blocks the glue material channel while the first glue seal part seals the glue material outlet. The invention has a simple structure, changes the traditional design idea, and provides a new and effective nozzle for spraying the rubber material, which is effective and stable during use; it adopts synchronous double-sealing rubber contact surface, double insurance to avoid glue leakage, and meets the requirements High-speed and high-pressure rubber injection.

Description

technical field [0001] The invention relates to a mold device for injection molding, in particular to a fast-cut liquid pneumatic nozzle. Background technique [0002] With the continuous rise of the automobile industry market, coupled with the current electrical appliances market and the increasing demand for plastic products in daily life, the production equipment (injection molding equipment) of plastic products is constantly improving every year, but it still cannot meet the market's demand for various plastic products. Demand, especially for LSR injection molding products, is in short supply. With the continuous increase of equipment, the production capacity has not been clearly reflected. The main reason for this phenomenon is that the core structural components of existing injection molding equipment (cut-off nozzles) are still traditional structures. Under the condition of speed and pressure, it will cause glue leakage and a large number of defective products, which ...

AI Technical Summary

Problems solved by technology

[0002] With the continuous rise of the automobile industry market, coupled with the current electrical appliances market and the increasing demand for plastic products in daily life, the production equipment (injection molding equipment) of plastic products is constantly improving every year, but it still cannot meet the market's demand for various plastic products. Demand, especially for LSR injection molding products, is in short supply. With the continuous increase of equipment, the production capacity has not been clearly reflected. The main reason for this phenomenon is that the core structural components of existing injection molding equipment (cut-off nozzles) are still traditional structures. Under the condition of speed and pressure, it will cause glue leakage and a large number of defective products, which is purely low-pressure and low-speed production

In addition, because the valve needle is located in the flow channel and reciprocates in the flow channel to open and close the gate, and the valve needle is in reciprocating contact with the molten resin in the flow channel for a long time, the surface is prone to wear and tear, which may cause poor sealing effect. it is good

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