Extrusion molding die for dry hanging ceramic plate

Abstract

The invention relates an improvement on the preparation of an extrusion molding die for a dry hanging ceramic plate, which is characterized in that a molding die is provided with a left molding part and a right molding part which are in axial symmetry, and non-cutoff cutters are arranged above and below the position of the symmetric axis. Furthermore, an adjusting section with adjustable clay output sections is provided with a radial telescopic adjusting plate, at least one of width surfaces comprises a plurality of independent adjusting blocks, and a conical clay extrusion transition section which enables the diameter of a clay extrusion port to be gradually reduced is arranged between the adjusting section with adjustable clay output sections and a clay extrusion cylinder. By using the extrusion molding die, two parallel blocks can be extruded in one step, thereby doubling the production efficiency, and ensuring that the two molding parts can be simultaneously used for extrusion; the outlet width of the die is increased, thereby enabling the extrusion of clay material to be smooth and reducing backflow; the two molding parts ensure that shapes on the two sides are in bilateral symmetry, thereby balancing the clay output quantity on the two sides; and the ratio of extrusion length to extrusion width is reduced, thereby stabilizing the clay output quantity. Thus, the extrusion deformation is effectively reduced, the qualification rate of the product is improved, and the qualification rate can be improved by about 20-50%. Besides, the clay output can be adjusted section by section, thereby ensuring that the adjustment of the clay output is more precise and refined; the conical extrusion transition section can enable the extruded clay flow to be smooth and balance the clay output quantity of each section; and the qualification rate of the product is further improved.

Description

technical field [0001] The invention is an improvement to the extrusion molding die for preparing dry-hanging ceramic panels, in particular to an extrusion molding die for dry-hanging ceramic panels that has high production efficiency and can simultaneously extrude two parallel dry-hanging ceramic panels. Background technique [0002] As a new type of dry-hanging installation curtain wall decoration material, ceramic panels are not only relatively large in size, but also have a large change in surface size, and most of them are left-right asymmetrical hollow structures (wall thickness 6-15mm). The existing technology basically adopts wet Production by extrusion molding. Existing extrusion molding die adopts traditional split brick mould, and at the front end of the mud extruding cylinder, the regulating section that can adjust the mud cross-section and the forming die (outlet veneer) that the front end is embedded extruded a board are provided with. However, due to the asym...

AI Technical Summary

Problems solved by technology

However, due to the asymmetrical structure of the dry-hanging terracotta panels (left and right thickness are uneven), and the dry-hanging installation method of the terracotta panels, the connection between the panels is a chelating form. This installation method requires extremely high straightness of the terracotta panels. Asymmetric extrusion of a single piece can easily lead to different drying shrinkage and deformation on both sides, and this deformation increases with the increase of the length-to-width ratio of the ceramic plate. When the length: width ratio is greater than 2.5, the deformation rate reaches 10-40%. In the production of large-length ceramic plates, the probability of deformation is higher, resulting in a low product qualification rate; in addition, the production efficiency of extruding a single piece is also low

[0003] In addition, the existing extrusion molding mold adopts the traditional split brick mold structure. Between the larger diameter extrusion cylinder and the forming die, there is an adjustment section that can adjust the mud cross section, but the mud discharge is adjusted to the length and width of the entire surface. structure

The adjustment of the mud output can only be adjusted on the whole surface, not locally. The adjustment accuracy of the mud output is not high, which may easily cause the amount of mud output to be unstable, and because the density of the mud material is not uniform, the density of the mud output at each point of the mud output section is not consistent. It is easy to cause deformation due to different drying shrinkage on both sides of the asymmetry, and affect the quality of extruded ceramic panels

[0004] Furthermore, the extruded mud is directly extruded from a narrow mud outlet (usually only 200-300mm in width) die through a wider mud extruding barrel (width 450mm), and the sudden change of the mud outlet section may easily cause mud to be incomplete. smooth, resulting in unbalanced amount of mud output from the left, middle and right, which will also cause inaccurate molding

In addition, most of the molding machines used by ceramic panel manufacturers are imported molding machines with high extrusion force, while the extrusion width of ceramic panels is small, and the mutation of the mud cross section also makes the mud flow back at the mold mouth when the molding machine is running, resulting in The density of the left and right sides of the extruded product is inconsistent and deformation occurs during drying

[0005] In addition, part of the existing die is embedded in the adjusting section of the adjustable mud section, which has strong matching. If the outlet width of the extrusion die is changed, the adjusting section of the adjustable mud section needs to be changed, which increases the cost of the mold.

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