Self-cooling foaming forming device of EPP material for automobile decorating part

Abstract

The invention discloses a self-cooling foam forming device of an EPP (Expanded Polypropylene) material for an automobile decorating part, which comprises a lower die holder, an upper die holder and a foam forming system, and is characterized in that a piston column penetrates through the top of the upper die holder, an air pressure plate is fixedly mounted at the top of the piston column, a sealing plate is fixedly mounted on the side edge of the air pressure plate, and the sealing plate is fixedly mounted on the side edge of the air pressure plate. A sealing plate is installed on the upper die base, a ventilation hole is formed in the sealing plate, a ventilation plate is installed in the ventilation hole in an electric control mode, a sealing block is installed on the top of the air pressure plate, a main through valve is arranged in the middle area of the top of the sealing block, and auxiliary through valves are evenly distributed on the periphery of the main through valve. An orientation disc is arranged in the upper mold base, a multifunctional rod is installed at the bottom of the orientation disc in an electric control mode, a steam hole is formed in the middle of the bottom of the orientation disc and connected with a steam chamber, and a material injection hole is formed in the multifunctional rod.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a self-cooling foam molding device for EPP materials used in automobile decorations. Background technique [0002] Epp material has light specific gravity, good energy absorption and recovery performance, shock resistance and compression resistance, and can be recycled. Therefore, since its appearance in the 1990s, Epp foam material has been widely used in the field of automobile manufacturing and has become an energy-absorbing and shock-absorbing material. The new darling of materials, Epp materials can be processed into products of various shapes. At the same time, when Epp materials are combined with other polypropylenes such as PP films, injection molding skeletons and TOP fabrics, the so-called "material integration" can also be realized. System", that is, the system does not need to be decomposed when it is recycled. Epp is composed of solid and other two parts. It is i...

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Problems solved by technology

[0002] Epp material has light specific gravity, good energy absorption and recovery performance, shock resistance and compression resistance, and can be recycled. Therefore, since its appearance in the 1990s, Epp foam material has been widely used in the field of automobile manufacturing and has become an energy-absorbing and shock-absorbing material. The new darling of materials, Epp materials can be processed into products of various shapes. At the same time, when Epp materials are combined with other polypropylenes such as PP films, injection molding skeletons and TOP fabrics, the so-called "material integration" can also be realized. System", that is, the system does not need to be decomposed when it is recycled. Epp is composed of solid and other two parts. It is in the form of black, gray and white granules, and the diameter is generally between 2-7mm. Epp granules The outer wall is closed and the interior is filled with gas. The solid content of conventional Epp particles only accounts for 2%-10% of the total weight, and the rest of the components are gas. Most of the foam molding machines on the market are single foam models. The efficiency is very low and the manufacturing mode is single, which cannot meet the different needs of customers. Therefore, it is necessary to design a self-cooling foam molding device for EPP materials for automotive decorative parts that is highly practical and can simultaneously produce a variety of automotive injection foamed parts. of

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