Local temperature compensation system of slush molding die preheating furnace

Abstract

The invention discloses a local temperature compensation system of a slush molding die preheating furnace. The local temperature compensation system is composed of an upper air bellow, a lower air bellow and air flues, wherein the air flues are arranged on the two sides of each of the upper air bellow and the lower air bellow; the space between the upper air bellow and the lower air bellow is provided with slush molding die heating chambers; a plurality of hot air outlet pipes are distributed on each slush molding die heating chamber; the plurality of hot air outlet pipes are distributed according to the shape of the slush molding die so that temperature uniformity of the surface of the slush molding die is guaranteed; furthermore, thickness uniformity of the slush molded skin is guaranteed, the surface A of the slush molded skin is the same inglossiness without aberration; the hot air outlet pipes are distributed corresponding to the positions of the slush molding die which needs to paste materials in the stay position of the slush molding die in the preheating furnace; simultaneously, the density of the hot air outlet pipes at the vertical surface of the slush molding die is greater than the density of the hot air outlet pipes at the plane of the slush molding die; therefore, the temperature of the slush molding die and the thickness of the slush molded skin of the vertical surface are guaranteed; temperature compensation is performed on the front defrosting grating of the slush molding die in positions of coming in and out of the preheating furnace; and as the temperature at the furnace door is lower than the temperature in the furnace, the temperature at the furnace door can be increased; therefore, temperature uniformity of the furnace of the slush molding die is guaranteed.

Description

technical field [0001] The invention relates to a preheating furnace of a slush mold, in particular to a local temperature compensation system of the preheating furnace of a slush mold. Background technique [0002] At present, the preheating methods of slush molding machine molds include sand heat, oil heat and air heat. The daily maintenance cost of sand heat and oil heat is high and the efficiency is low. At present, the structural design of the air heat furnace is unreasonable, which makes the surface temperature of the slush mold uneven, resulting in uneven thickness of the slush skin, and the A of the slush skin. The surface gloss varies and there is color difference. Contents of the invention [0003] The object of the present invention is to provide a material transfer and knocking mechanism for slush molding machine. The present invention carries out a profiling design on the air duct in the mold preheating furnace of the slush molding machine. At the same time,...

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Problems solved by technology

The daily maintenance cost of sand heat and oil heat is high and the efficiency is low. At present, the structural design of the air heat furnace is unreasonable, which makes the surface temperature of the slush mold uneven, resulting in uneven thickness of the slush skin, and the A of the slush skin. The surface gloss is different, there is color difference

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