Mold special for direct-pressing forming of bathroom ceramic blank

Abstract

The invention belongs to the technical field of ceramic forming and in particular relates to a forming mold of a bathroom ceramic blank. The forming mold comprises a male die and a female die, which are matched with each other. The forming mold is characterized in that: the male die and the female die consist of water-absorbable and air-permeable K gypsum; steel mold sleeves are arranged on side walls of the male die and the female die and restrain the deformation of the side walls; and air inlets which are communicated with compressed air are arranged on the steel mold sleeves. By adoption of the technical scheme of the invention, the mold for direct-pressing forming of the bathroom ceramic blank is high in intensity, water-absorbable and air-permeable, and facilitates de-molding of the blank.

Description

technical field [0001] The invention belongs to the technical field of ceramic molding, and in particular relates to a molding die for sanitary ceramic blanks. Background technique [0002] In the field of sanitary ceramics, the production of ceramic blanks usually adopts the grouting molding process. The grouting molding process requires the mold to absorb the moisture in the slurry to make the slurry form a crust. Therefore, the molding speed is slow. After each grouting molding, the mold needs to be repaired. Dry, unable to work continuously, low efficiency. [0003] In view of the shortcomings of the grouting molding of the existing sanitary ceramic blanks, the inventor invented the blank direct pressure molding process, which is used to make blanks with large openings, such as water tanks, water tank covers, squatting pans, wash basins, etc. The specific process is as follows: according to the configuration Comparing with the configuration of the molding material, add ...

AI Technical Summary

Problems solved by technology

In this process, the existing forming molds are mostly gypsum and resin structures or all-metal structures. When these molds are used in the direct compression molding process of the present invention, there are the following disadvantages: 1. The mold strength of the gypsum structure is not large enough, and it is easy to Destroyed during the extrusion process; 2. Although the forming die of the all-metal structure is strong, it does not have water absorption and air permeability. After extrusion molding, the bonding force between the blank and the forming die due to moisture makes it difficult to remove mold

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