Gas recyclable injection mold

Abstract

The invention discloses a gas recycling type injection mold. The gas recycling type injection mold comprises a bottom die (1) and a top die (2). The gas recycling type injection mold is characterized in that a feeding opening (3) used for filling injection material is formed in the top die (2), and is fixedly connected with a feeding pipe (4); the feeding pipe (4) comprises a vertical pipe (5), an inclined pipe (6) and a degassing device (8); the degassing device (8) is connected with the vertical pipe (5) and the inclined pipe (6); a degassing hole (10) is also formed in the upper surface of the degassing device (8) and is connected with a gas recycling device. The gas recycling type injection mold has a degassing function, is good in degassing effect and further has a gas recycling function.

Description

technical field [0001] The invention relates to a gas recyclable injection mold, which belongs to the technical field of molds. Background technique [0002] At present, molds are widely used in production enterprises, which have high work efficiency and convenient operation. Thermoplastic injection molding has a short molding cycle, high production efficiency, and the injection material has little wear on the mold. It can form large quantities of plastic parts with complex shapes, clear surface patterns and marks, and high dimensional accuracy. [0003] However, the existing injection molds generally do not have a degassing function, the air in the injection molding material cannot be discharged in time, and air holes often appear on the surface and inside of the plastic part after molding, especially for some plastics that require high processing accuracy and cannot have air bubbles. As far as parts are concerned, the plastic parts produced by the existing process have a ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing injection molds generally do not have a degassing function, the air in the injection molding material cannot be discharged in time, and air holes often appear on the surface and inside of the plastic part after molding, especially for some plastics that require high processing accuracy and cannot have air bubbles. For parts, the plastic parts produced by the existing process have a low qualification rate and a high rework rate, resulting in waste of man-hours and production costs, and extremely low production efficiency.

[0004] In addition, injection molds with degassing function generally do not have gas recovery devices, especially for injection molds of some polymer organic materials, because some by-products are produced when preparing polymer organic materials, these by-products are generally small molecules that can be volatile Compounds such as ethylene, methane, etc. These substances exist as impurities and are volatile at high temperatures. If they are directly discharged into the atmosphere, they will easily cause explosions caused by excessive concentrations of local combustible gases, and direct discharge of some toxic gases. Human injury and air pollution, etc., so it is very necessary to recover the gas generated by the injection mold with degassing function

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