Auxiliary raw material mixing device for plastic injection molding machine

Abstract

The invention relates to the technical field of injection molding, and discloses an auxiliary raw material mixing device for a plastic injection molding machine. The device comprises an injection molding device, wherein a heating block is fixedly connected to the outer ring of a cavity of the injection molding device, a feeding hopper is fixedly connected to the top of the injection molding device, and an inner net cylinder is rotatably connected to the interior of the feeding hopper; A rotating gear is fixedly connected to the bottom of the outer ring of the inner net cylinder, a feeding gear is connected outside the rotating gear in an engaged mode, an outer screw rod is movably connected to an inner cavity of the injection molding device, and an inner pressing rod is arranged in the outer screw rod. By using a feeding hopper, an inner net barrel, a rotating gear and a feeding gear in a fit manner, the effect of stirring raw materials in the feeding hopper is achieved, so that the raw materials on the outer side of the inner net barrel are circularly mixed, the raw materials on all layers of the inner net barrel enter an inner cavity of the injection molding device through the inner net barrel, uniform mixing of the raw materials is effectively guaranteed, and the preliminary mixing effect is achieved; and the product quality is effectively ensured.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to an auxiliary raw material mixing device for a plastic injection molding machine. Background technique [0002] Injection molding processing is an important processing method of plastic processing. During injection molding processing, the injection gun is usually used to inject plastic liquid into the inner cavity of the plastic mold. The plastic in the molten state enters the inner cavity of the mold and is finally cooled and formed. The injection gun mainly plays the role of Feeding, heating and melting, and material mixing, and at the same time increase the injection pressure to prevent cooling shrinkage, resulting in unqualified injection molding product quality. [0003] However, the existing injection molding device does not mix the materials uniformly when feeding, which often leads to the old and new raw materials with color difference being located at different ...

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Problems solved by technology

[0002] Injection molding processing is an important processing method of plastic processing. During injection molding processing, the injection gun is usually used to inject plastic liquid into the inner cavity of the plastic mold. The plastic in the molten state enters the inner cavity of the mold and is finally cooled and formed. The injection gun mainly plays the role of Feeding, heating and melting, and material mixing, and at the same time increase the injection pressure to prevent cooling and shrinkage, resulting in unqualified injection molding product quality

[0003] However, the existing injection molding device does not mix the materials uniformly when feeding, which often leads to the old and new raw materials with color difference being located at different positions of the plastic part during the injection molding process, resulting in uneven color distribution and affecting product quality. During injection molding, the pressure of the injection screw on the inside of the mold cavity is uneven, and when pressing the material, it is easy to cause material leakage, resulting in uneven pressure retention, resulting in insufficient injection of the final product, resulting in unqualified product production

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