Hot pressing injection mold and forming method for automotive trim production

Abstract

The invention provides a hot pressing injection mold and forming method for automotive trim production, and relates to the technical field of hot pressing molds. A hot pressing cavity is formed between a lower mold and an upper mold, the positions, at the edge of the hot pressing cavity, of the two side faces of the upper mold are provided with side molds, and the outer side of each side mold is provided with a side face opening-closing mechanism; and the top of the upper mold is provided with a top lifting mechanism. The side molds do horizontal motion under the action of the side face opening-closing mechanisms, and the position at the cross section of the edge of an automotive trim is provided with an injection molding hole channel. The upper mold does vertical motion under the action of the top lifting mechanism. The hot pressing injection mold aims at the material characteristics and the forming technology of the automotive trim made of a composite material, the split mold designis adopted, hot pressing and injection molding are integrated, integral forming of a finished product is ensured, meanwhile, the product producing procedures are decreased, the product cost is reduced, the labor intensity is relieved, the product quality is improved, and application and popularization are facilitated.

Description

Technical field: [0001] The invention relates to the technical field of hot-pressing molds, in particular to a hot-pressing injection mold and a molding method used for the production of automobile interior decorations. Background technique: [0002] At present, with the continuous enhancement of people's awareness of environmental protection, automotive interior composite materials are developing in the direction of high sound absorption, lightweight, high strength, environmental protection and recyclability. Natural fibers are used as good materials for heat insulation and sound insulation, especially as polymerization Filling and reinforcing materials for material materials, due to their light weight and low cost, have been widely used in the automotive interior parts manufacturing industry. The demand for hemp fiber composite materials in automotive interiors is increasing. Sandwiched hemp fiber composite materials, such as figure 2 The automobile interior parts shown a...

AI Technical Summary

Problems solved by technology

[0002] At present, with the continuous enhancement of people's awareness of environmental protection, automotive interior composite materials are developing in the direction of high sound absorption, lightweight, high strength, environmental protection and recyclability. Natural fibers are used as good materials for heat insulation and sound insulation, especially as polymerization Filling and reinforcing materials for material materials, due to their light weight and low cost, have been widely used in the automotive interior parts manufacturing industry. The demand for hemp fiber composite materials in automotive interiors is increasing. Sandwiched hemp fiber composite materials, such as figure 2 The automobile interior parts shown are filled with hemp fiber in the middle of two layers of polymer materials and formed by hot pressing. When the hot-pressed product is opened, the edge is easy to tear and crack when the mold is not completely cooled. Mold opening after complete cooling reduces production efficiency

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