Method for supplying rubber raw materials to injection molding machine and device thereof

Abstract

The invention relates to a method for supplying rubber raw materials to an injection molding machine and a device thereof. A rubber raw material strip is suspended in the air in a zigzag extending mode before being fed into a feeding port of an injection extruding barrel of the injection molding machine, and the portions, wriggling downwards, of the rubber raw material strip are provided with supporting so as to disperse the overall weight of the raw material strip.

Description

Technical field [0001] The present invention is related to polymer processing technology, in particular to a method and device for supplying rubber raw materials to an injection machine. Background technique [0002] In the field of rubber injection molding technology, compared with general polymer monomers, the specific gravity of natural or artificial rubber raw materials is usually larger, and the weight also increases. It is not suitable for hoppers and other feed tanks as containers. The rubber material is fed into the extrusion cylinder of the machine. Therefore, the known technology first preprocesses the rubber material into a strip of appropriate length, and then places the material in a roll on a fixed point on the ground. One end is fed from the inlet of the extrusion barrel of the injection molding machine, so that it is rolled and pulled by the screw inside the extrusion barrel. According to this, when the screw is rotating on its own, the rubber material strip can b...

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Problems solved by technology

[0003] However, during the feeding process, due to the heavy weight of the rubber raw material belt itself, it is often broken due to improper pulling or excessive load when being rolled, causing the supply of raw materials to be interrupted. Failure to detect and deal with it in time will lead to poor manufacturing quality and efficiency. Therefore, in order to reduce the incidence of material belt breakage, in my country's new patents No. 083206726 and No. 089209854, it is disclosed that there are By setting up an appropriate guide device around the inlet of the extrusion cylinder, it provides guidance and assistance to the rubber strip, in order to make the movement of the rubber strip into the extrusion cylinder smooth, and to avoid pulling due to the entanglement of the strip, resulting in breakage occurs

[0004] Admittedly, the above-mentioned prior patents may enable the movement of the material strip near the material inlet to be properly guided, but for other parts of the roll material strip, there is a lack of corresponding technology, so that the material strip still remains when it is placed in a roll. Appropriate anti-adhesive agents need to be added to avoid sticking of unvulcanized rubber raw materials, and the added anti-adhesive agents cannot be removed before the tape enters the extrusion cylinder, which may affect the quality of the finished product. Or, the rolled and heavy rubber raw material belt is not suitable for synchronous displacement with the injection machine, which makes it difficult for the injection machine to reciprocate between a plurality of different molding mold stations in the technical field of rubber injection molding processing Displacement, and only fixed-point injection operations can be performed, which is still not ideal in processing technology

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