Two-color injection molding integrated forming process of environment-friendly automobile interior part

Abstract

The invention discloses a two-color injection molding integrated forming process of an environment-friendly automobile interior part, and a drying device is included. The process comprises the following steps offirstly, adding PC+ABS plastic particles and TPU plastic particles into the drying device for drying; secondly, feeding the dried raw materials into an injection molding machine, and heating the dried raw materials to a molten state; thirdly, connecting a first injection fixed mold to a water temperature machine, connecting a second injection fixed mold to a refrigerator, and connectinga movable mold to the water temperature machine; and fourthly, injecting the PC+ABS molten state liquid flow into a first injection mold cavity from a charging barrel A nozzle of the injection molding machine. According to the two-color injection molding integrated forming process of the environment-friendly automobile interior part, a hard rubber material and a soft rubber material are combined,and compared with the conventional method for sticking an adhesive tape on the back of a single-color injection molding part for shock absorption, the processing procedures are reduced, the risks ofmultiple procedures are reduced, and the production efficiency is improved; and the soft rubber material has a shock absorption effect oncustomers, and the abnormal sound generated by vehicle body vibration in the running process of a vehicle is effectively lowered; and the TPU material can be recycled as thermoplastic elastomer, and the processing process has less pollution compared with that ofcommon rubber.

Description

technical field [0001] The invention relates to the technical field of injection molding of automobile interior decoration, in particular to an integrated molding process of two-color injection molding of environment-friendly automobile interior decoration parts. Background technique [0002] With the development of economy and the advancement of science and technology, the level of automobile manufacturing has also increased, and the types of automobiles have continued to increase. People have higher requirements for the comfort and aesthetics of automobiles while requiring the functionality of automobiles. Plastic products have strong shapeability and moderate cost, so they are also widely used in automobile production. Affected by the quality of raw materials, injection molds and injection molding processes, some quality problems will also occur in the injection molding production of automotive interior parts. [0003] The existing two-color injection molding, one shot o...

AI Technical Summary

Problems solved by technology

[0003] The existing two-color injection molding, one shot of hard rubber (PC+ABS), two shots of soft rubber (TPU), belongs to the emerging technology in the automotive industry. The effective combination of soft rubber and hard rubber is conducive to improving the current common instrument cover. For the problem of abnormal noise of trim parts, car users hope that the interior noise of the car will be low and quiet during driving. The bonding force between the two materials needs to be improved. For this reason, we propose an integrated molding process of two-color injection molding for environmentally friendly automotive interior parts.

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