A suction and exhaust system for molds used in ceramic tile pressing

Abstract

The invention discloses an air extracting and exhausting system for a die in the ceramic tile pressing molding process. The air extracting and exhausting system comprises a gas monitoring system and a ceramic tile die core, and the gas monitoring system is connected with the ceramic tile die core; the gas monitoring system comprises a booster pump, a first magnetic valve, a second magnetic valve, a third magnetic valve, a fourth magnetic valve, a fifth magnetic valve and a jet device; and a controller controls a gas control circuit, the controller comprises a mode selection module, and the mode selection module is used for selecting from a high-pressure exhaust model, a normal-pressure exhaust mode and an air extracting mode. Air in ceramic powder is pumped out in the pressing process, the ceramic tile die core is subjected to exhausting in the next round of pressing so that the stressed work surface of the ceramic die core can be cleaned, air-guide holes are effectively prevented from being blocked, and the quality of the next round of exhausting is guaranteed; and besides, the two modes of normal-pressure exhausting and high-pressure exhausting are arranged, selection of the different modes and selection of air extracting and exhausting time setting are performed according to the adhesion amount of the ceramic powder, and thus it is guaranteed that the ceramic powder of all the air-guide holes can be completely blown away.

Description

technical field [0001] The invention relates to the field of ceramic moulds, in particular to a suction and exhaust system for a mold used for pressing tiles. Background technique [0002] Ceramic floor tiles are usually formed by pressing ceramic powder in the cavity of the mold. The ceramic powder used is spherical particles made by a spray drying tower, and its air content is about 30%-40%. During the process of ceramic powder being pressed, the air contained in it will quickly gather to form an air mass under huge pressure. As the pressure increases, the air mass is further compressed. When the pressure is greater than the coagulation force between the materials, the air The agglomerate will destroy the condensation between the materials, and further connect with the surrounding air mass, and the gradually larger air mass will form an air layer that separates the surrounding materials, resulting in an interlayer in the adobe, which will affect the forming strength of the...

AI Technical Summary

Problems solved by technology

However, in the actual use process, after the pressing is completed, a large amount of ceramic powder will adhere to the pressure working surface of the mold core and block the through holes on the mold core, so that the exhaust quality of the ceramic powder will be greatly reduced during the next round of pressing. , which seriously affects the forming quality of the next adobe

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