Online mixing injection molding process suitable for carbon fiber automobile part

Abstract

The invention discloses an online mixing injection molding process suitable for a carbon fiber automobile part. Equipment for achieving the process comprises a double-screw extruder, an injection molding machine, an automatic feeding machine, a forced side feeding system, a mold temperature machine and a water cooler. The online mixing injection molding process is characterized by comprising the steps that plastic particles, additives and fillers are added into the double-screw extruder to be mixed and plasticized through the automatic feeding machine and the forced side feeding system according to a formula resin system; recycled carbon fibers are added into the back section of a screw through the forced side feeding system, and mixing and plasticizing are further conducted; the uniformly mixed plastic and carbon fibers enter an injection cylinder of the injection molding machine through a feeding valve of the forced side feeding system; an injection mold is closed through a mold locking unit; an injection valve of the injection molding machine is opened, the uniformly mixed plastic and carbon fibers in the injection cylinder of the injection molding machine are injected into a forming mold through the injection valve of the injection molding machine, meanwhile the temperature is controlled through the mold temperature machine, then cooling solidification through the water cooler and demolding are conducted, and a semi-finished product can be obtained; and after the semi-finished product is subjected to demolding, the required product can be obtained through trimming and other working procedures.

Description

technical field [0001] The invention relates to an online mixing and injection molding process suitable for carbon fiber auto parts. Background technique [0002] With the development of the automobile industry, people have higher and higher requirements for the quality of automobiles. In order to adapt to the development of the times and the needs of consumers, automobile manufacturers around the world are also constantly innovating, not only improving the efficacy and quality of auto parts, but also making various changes to some tooling and production lines for the production of auto parts. Improvements to increase productivity and reduce cost savings. At present, the structural and semi-structural parts of automobile bodies are still metal products. In order to realize the lightweight of automobiles, developed countries in the world use new carbon fiber materials to replace metal structural and semi-structural parts of automobile bodies to achieve lightweight automobile...

AI Technical Summary

Problems solved by technology

The injection molding process is relatively simple, and it can also form complex structural parts, but the LFT-G process adds a granulation process, that is, the fibers and plastic particles must be mixed uniformly and granulated through the extruder before use.

Moreover, the secondary injection molding will further damage the fiber, so that the average length of the fiber remaining in the product is only about 1-2mm

The performance of the product is also greatly reduced

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