Liquid-state silicon gel injection forming machine

Abstract

The invention discloses a liquid-state silicon gel injection forming machine, which comprises a straight press type injection gun barrel, a static mixer, a proportional pump and a gel pump cylinder, wherein the straight press type injection gun barrel comprises an injection oil cylinder, an electronic ruler, a material containing gun barrel, an injection valve and an injection nozzle, the gel pumping cylinder comprises a press disc, a lower pump tube, an upper pump tube and a pull rod, a color paste pump comprises an injection air cylinder, a color paste injection tube, a reverser, a color paste tube and a measuring ruler, a gel outlet opening of the gel pumping cylinder is connected with a gel inlet opening of the proportional pump through a rubber pipe, the proportional pump comprises two proportional tubes: a proportional tube A and a proportional tube B, the two proportional tubes A and B are connected with a mixing pipe through the ruber tube, the mixing pipe is connected with the material containing gun barrel through a one-way valve, and a color paste output opening of the color paste pump is connected with the mixing pipe through a copper pipe. When the straight press type injection gun barrel of the invention is adopted, the cost is low, residual gel is not easy to be attached to the inner wall of the gun barrel, the structure is simple, and the cleaning is convenient. The proportional pump and the color paste pump are adopted, the accuracy of the material addition is high, and in addition, the invention can be applicable to the injection forming of various kinds of liquid-state silicon gel with different viscosities.

Description

technical field [0001] The invention relates to a liquid silicone injection molding machine, in particular to a liquid silicone injection vulcanization molding machine. Background technique [0002] The existing related machines are formed by the transformation of ordinary injection molding machines, that is, a machine formed by adding a liquid silicone feeding device on the basis of the injection molding machine and modifying the barrel, although such transformation can also complete the liquid silicone rubber Injection molding production works, but such a transformation would have many drawbacks. First of all, add a feeding system to the injection molding machine, the compatibility between the two is not good, and it is inconvenient to operate; secondly, the injection barrel of the injection molding machine is a screw-type injection method, and the viscosity of liquid silicone rubber is also relatively high. In this way, the screw stirs the liquid silica gel during rotati...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to fully mix the liquid silica gel of A and B with a ratio of 1:1 and then send it to the injection barrel. The existing technology is to control the output pressure of A and B two groups of glue to control A and B. The ratio of the two groups of glue, because the viscosities of the two groups of silica gel A and B of different types are also different, and the amount of glue flowing out is also not equal, so the ratio of the two groups of glue A and B cannot reach 1:1, which affects the product. has a big impact on the quality of

At present, most of the liquid silicone products are colorless, or the original color of the material, and a small amount of auxiliary color paste is added by a constant pressure pump to add color paste in a constant pressure manner. It is difficult to control the amount of color paste accurately. Bring difference to product appearance color

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