Auto air duct plate open-type foaming device and its air duct plate production method

Abstract

The invention discloses an open foaming device for car air channel board, comprising foaming units, forming mold and mold platform. The forming mold is set on mold platform, and it concludes bottom and top mold, said bottom mold is an integral, said top mold comprises multi-section top mold in relative to bottom mold. The multi-section top mold is clamped section by section according to the sequence of polyurethane material casting. The clamping and forming of polyurethane in front section are finished before coagulation and solidification, and clamping and forming of polyurethane cast in next section is finished gradually. The invention is characterized by no filling of catalyst for prolonging opalescence time, high producing efficiency, and good quality of air channel board.

Description

Technical field: [0001] The invention relates to the manufacturing field of automobile air duct facilities, in particular to an open foaming device for an automobile air duct plate and a method for manufacturing the air duct plate. Background technique: [0002] At present, the length of the automobile air duct board is 4-12 meters. The air duct board made of polyurethane fiberglass mixture has good weather resistance and is not easy to deform at high temperature. However, the polyurethane fiberglass mixture is affected by the milk white time (about 35 seconds) and the later curing time. Restrictions. To make a longer air duct board, you need to continuously pour the foamed polyurethane fiberglass mixture in the mold. The pouring time takes about 70-150 seconds. Usually the polyurethane fiberglass mixture in the back section has not been poured, and the polyurethane poured in the front section The glass fiber mixture has quickly gelled. If the mold is not closed for forming, the ...

AI Technical Summary

Problems solved by technology

[0002] At present, the length of the automobile air duct plate is 4-12 meters. The air duct plate made of polyurethane fiberglass mixture has good weather resistance and is not easy to deform under high temperature. Restrictions, to make a long air channel plate, it is necessary to continuously pour the foamed polyurethane fiberglass mixture in the mold, and the pouring time takes about 70-150 seconds. Usually, the polyurethane fiberglass mixture in the rear part has not been poured, and the polyurethane in the front part is poured The glass fiber mixture has almost gelled. If the mold is not clamped and formed at this time, the polyurethane glass fiber mixture poured in the previous section will gel and solidify, which cannot be molded or affect the quality of the air duct plate; if it is added to the polyurethane glass fiber mixture If the catalyst is delayed, the milk white time will be prolonged, the production efficiency will be low, vacancies, voids, hard foams, and material shortages will easily occur, and the product quality cannot be guaranteed. Therefore, it is difficult to make long air duct panels with polyurethane fiberglass mixture

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