Internal-division-type fender injection mold and injection molding method of fender

Abstract

The invention provides an internal-division-type fender injection mold and an injection molding method of a fender, and relates to the field of injection molds. An inclined ejection block and a slide block are combined to eject the fender while opening the mold; in order to ensure the balance and synchronization of the ejection, a heavy-duty draw hook installed on the movable side draws a push plate at the fixed side while opening the mold, a shift block, the inclined ejection block and the slide block are uniformly driven to move by the push plate, so that the fender is ejected and left on the female mold cavity; and the fender is taken down by a manipulator. The mold stripping mode solves the problem of difficulty in mold stripping in the internal-division-type fender injection mold, so that the round inverted in the female mold can be smoothly demolded, and the round of the product can not be scratched or deformed.

Description

technical field [0001] The invention relates to the field of injection molds, in particular to an injection mold for an inner split fender and an injection molding method for the fender. Background technique [0002] At present, the main direction of the world's automotive material technology development is lightweight and environmental protection. The fenders of ordinary traditional cars are sheet metal parts that are combined with multiple complex processes such as stamping, stretching, and edge trimming. The production cycle is long and the efficiency is low. And scrap rate and production cost are all very high, and, because use many heavy metal raw materials, have increased vehicle body weight and increased energy consumption emission. At present, we use injection molds instead, and use plastic PPO / PA to inject fenders to greatly reduce the weight of the car body and lower fuel consumption, so it is more environmentally friendly and energy-saving, and this plastic has be...

AI Technical Summary

Problems solved by technology

[0003] In the past, the outer parting was generally used in the development of the mold for the fender. The outer surface of the product injection molded by the outer parting mold will have a parting line. The injection molded product needs to be polished and then painted, which increases the work intensity, and Affect appearance quality

As the requirements for the appearance of mid-to-high-end car fenders are getting higher and higher, in order to prevent the parting line at the fillet of the product from destroying the integrity of the fillet, someone designed the inner parting, which means the appearance is visible The surface is hidden in the cavity, and the internal parting mold solves the problem of the parting line on the appearance of the fender, but the structure of the internal parting mold causes R angles at both ends of the cavity, so that the product cannot be separated from the cavity, making it difficult to release the mold , if the mold is forced out, it will cause strain or deformation at the R corner, which will also affect the appearance quality

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