Method and device for supplying rubber raw material to injection machine

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 invention relates 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 accordingly. It is not suitable to use feeding troughs such as hoppers as containers. The rubber raw material is sent into the extruding barrel of the injection machine. Therefore, the known technology preprocesses the rubber raw material into a strip of appropriate length, and then places the strip in rolls on the ground at a fixed point. One end is fed from the feed port of the extrusion barrel of the injection molding machine, so that it is rolled by the screw inside the extrusion barrel. Accordingly, when the screw is rotating on its own, the rubber raw material b...

AI Technical Summary

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 occurrence rate of material tape breakage, the new patents No. TW083206726 and No. TW089209854 both disclosed the use of Appropriate guide devices are installed around the inlet of the extrusion cylinder to provide guidance and assistance for the rubber material belt, in order to make the movement of the rubber material belt into the extrusion cylinder smooth, and to avoid pulling due to the entanglement of the material belt, resulting in breakage situation 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

Images