Mold for pressing gypsum hollow brick and pressing method thereof

Abstract

A mold for pressing a hollow gypsum brick comprises a hydraulic machine frame (1), an upper pressure head combination (2), a mold frame combination (3), a feeding box (4), a feeding box oil cylinder push rod (5), a feeding box supporting plate (6), a feeding box linear guide rail (7), a lower pressure head combination (8), a mold heightening workbench (9) and a mold core combination (10). The mold has the beneficial effects that the whole mold is designed according to the compression ratio of powder, and the hollow gypsum bricks can reach the specified density; demolding is convenient, and the mold is not prone to damage; during the compaction process of the powder, the relative uniformity of the density of the upper portion and the lower portion of the brake is ensured, and the phenomenon of upper compaction and lower looseness through a one-way pressing mode is avoided; by means of the pressing process, the friction force to the mold frame combination and the mold core combination is reduced, and the service life of a surface anti-sticking coating is prolonged; since the mold is provided with the anti-sticking coating, the surface of the hollow brick is not contaminated with releasing agents and other contaminants, and accordingly the quality of wall whitewashing during the later period is guaranteed.

Description

technical field [0001] The invention relates to a hollow brick mould, especially a special mold structure technology for pressing gypsum hollow bricks. Background technique [0002] At present, gypsum products are mostly made by mold casting, which has low density, low strength, and small softening coefficient. If the hollow brick is made by casting method, its strength cannot meet the architectural requirements; Spraying the release agent on the surface will easily cause the wall skin to fall off after plastering the wall; in addition, if the mold for making cement hollow bricks is used to press the gypsum hollow bricks, the upper surface of the bricks will have dents or cracks after the mold frame and the mold core are integrated. The convex platform is one-way pressing, and the density of the hollow brick is uneven, which affects the quality of the brick. Therefore, the cement hollow brick mold is not suitable for the pressing production of the gypsum hollow brick, and th...

AI Technical Summary

Problems solved by technology

[0002] At present, gypsum products are mostly made by mold casting, which has low density, low strength, and small softening coefficient. If the hollow brick is made by casting method, its strength cannot meet the architectural requirements; Spraying the release agent on the surface will easily cause the wall skin to fall off after plastering the wall; in addition, if the mold for making cement hollow bricks is used to press the gypsum hollow bricks, the upper surface of the bricks will have dents or cracks after the mold frame and the mold core are integrated. The convex platform is a one-way pressing, and the density of the hollow brick is uneven up and down, which affects the quality of the brick. Therefore, the cement hollow brick mold is not suitable for the pressing production of the gypsum hollow brick, and the application of the gypsum hollow brick on the market is minimal.

Images