Automatic feeding system based on preheating type plastic molding compound blending cylinder

Abstract

The invention provides an automatic feeding system based on a preheating type plastic molding compound blending cylinder. The automatic feeding system comprises the preheating type plastic molding compound blending cylinder and a quantitative batching device, wherein a carrier gas distributor in a circular truncated cone cylinder shape is arranged at the upper part of a cylinder body of the preheating type plastic molding compound blending cylinder and divides the inside of the cylinder body into a carrier gas pre-distributor at the upper part and a blending zone at the lower part; a carrier gas inlet for feeding gas tangentially is formed in the wall of the carrier gas pre-distributor; a feeding pipe is arranged on the cylinder body, and two ends of the feeding pipe are communicated with a feeding hopper and the blending zone respectively; a discharging pipe is arranged at the lower part of the blending zone. The quantitative batching device comprises a conveyor belt device and a plurality of raw material containers arranged above the conveyor belt device; the conveyor belt device is used for conveying molding compounds; the raw material containers are in an inverted tank shape and used for accommodating different molding compounds or flexibilizers and can control the quantity of the discharged molding compounds. The automatic feeding system based on the preheating type plastic molding compound blending cylinder has the advantages of uniformly mixed molding compounds, low probability of blockage and damage, realization of automatic feeding and the like.

Description

technical field [0001] The invention belongs to the technical field of auxiliary equipment for plastic molding presses, and in particular relates to an automatic feeding system based on a preheating plastic molding material mixing cylinder. Background technique [0002] Compression molding is the oldest molding method in plastic processing. Due to the long history of other uses, the molding technology has been quite mature. At present, it is still the most widely used and dominant molding processing method in the processing of thermosetting plastics and some thermoplastics. [0003] In actual production, a plastic molding machine is usually used as a production tool, and a certain amount of molding material is put into the metal counter-mold to melt (or plasticize) the molding material to fill the mold cavity, and make the molding material solidify. Finished product of desired shape and structure. In actual production, the molding material is often manually added to the ...

AI Technical Summary

Problems solved by technology

In actual production, the molding material is often manually added to the molding machine, which will inevitably cause certain problems in production: since the molding material is usually a variety of powdery or granular plastics, there are also added toughening These raw materials are difficult to mix evenly under manual operation; due to uneven mixing, the ratio of raw materials and toughening agents in each part of the product will inevitably be different, resulting in uneven product quality.

[0004] At the same time, the molding material added to the plastic molding machine is the same as the room temperature. It needs to be heated by the molding machine first, and then thermoplastically formed, and the production efficiency is low.

[0005] Most of the currently used plastic molding machines use manual feeding methods. It is inconvenient to adjust the ratio of different molding materials and toughening agents, and automatic feeding cannot be realized. The labor intensity is high and the efficiency is low.

In addition, due to the high temperature of the working part of the plastic molding machine, manual feeding also has certain safety hazards

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