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CN-224224158-U - Ceramic die-casting forming die capable of reducing porosity

CN224224158UCN 224224158 UCN224224158 UCN 224224158UCN-224224158-U

Abstract

The utility model discloses a ceramic die-casting forming die capable of reducing porosity, which comprises a fixed die, a casting die, a section die and a plurality of side punch assemblies arranged on the periphery of the fixed die. The inside die cavity, drift groove and thimble gas pocket that are equipped with of section mould, casting die top surface is equipped with the spraying pump that is used for spraying release agent. The side punch assembly comprises a guide rail seat, a control rod, a sliding seat and a punch block, and an exhaust hole is formed in the punch block. When the ceramic molding die is in operation, after primary die casting is completed, the punch block moves along the punch groove to realize secondary compaction, residual gas in the pug is discharged, and an exhaust channel is formed by combining the exhaust hole and the thimble air hole, so that the porosity in the ceramic molding part is effectively reduced. The release agent spraying pump performs atomization spraying before die assembly, and the release effect is improved. The utility model has compact structure, has the functions of secondary compaction, exhaust and demoulding, and obviously improves the forming quality and compactness of ceramic products.

Inventors

  • Lin Kehua
  • YU JIANTONG
  • Lin Guixiong
  • YU WENSHENG

Assignees

  • 潮州市连丰陶瓷科技有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (7)

  1. 1. The ceramic die-casting forming die for reducing the porosity is characterized by comprising a fixed die (100), a casting die (110), a die (120) and a plurality of side punch assemblies (200) arranged on the periphery of the fixed die (100), wherein the die (120) is arranged in the fixed die (100), a die cavity (121) and a plurality of punch grooves (122) are formed in the die, a plurality of thimble air holes (123) are formed in the bottom surface of the die (120), the casting die (110) is arranged above the fixed die (100), and a release agent spraying pump (111) is arranged on the top surface of the casting die for spraying release agent into the die cavity (121); The side punch assembly (200) comprises a guide rail seat (210), a control rod (220), a sliding seat (230) and a punch block (240) fixed on the surface of the sliding seat (230), wherein the control rod (220) is fixed on one side of the guide rail seat (210) and the output end of the control rod is fixedly connected with the surface of the sliding seat (230), one side of the guide rail seat (210) is fixed on the surface of a fixed die (100), and an exhaust hole (241) is formed in the punch block (240) and used for releasing gas in a die casting process.
  2. 2. The die of claim 1, wherein the control rod (220) is of a bidirectional pneumatic or hydraulic driving structure for driving the punch block (240) to reciprocate back and forth along the direction of the punch recess (122) to achieve secondary die casting.
  3. 3. The die of claim 1, wherein the punch block (240) is moved inside the punch recess (122) to achieve secondary compaction after the primary die casting is completed, for reducing residual gas in the ceramic frit and improving compactness.
  4. 4. The die of claim 1, wherein the vent holes (241) are a plurality of small holes uniformly distributed along the circumference or end face of the punch block (240), and the holes have a diameter of 0.5 mm-2 mm for discharging gas in the die cavity.
  5. 5. The mold according to claim 1, wherein the mold release agent spraying pump (111) is a pneumatic atomizer, and a nozzle is disposed toward the bottom of the cavity (121) for spraying the mold release agent to the mold before the mold is closed, thereby improving the molding quality.
  6. 6. The mold according to claim 1, wherein the ejector pin air hole (123) forms a positive pressure ejection open air path when the mold is exhausted.
  7. 7. The die of claim 1, wherein a plurality of side punch assemblies (200) are each symmetrically disposed along the periphery of the die (120), and the punch blocks (240) are insert-fitted in one-to-one correspondence with the corresponding punch grooves (122).

Description

Ceramic die-casting forming die capable of reducing porosity Technical Field The utility model relates to the technical field of ceramic production, in particular to a ceramic die-casting forming die capable of reducing porosity. Background The die casting molding of ceramic products is a high-efficiency and high-precision molding method widely adopted in the ceramic industry at present, and is particularly suitable for ceramic products with complex structures or high density requirements. The basic technological process includes injecting slurry or ceramic slurry into the mold cavity, pressing to form with pressure casting mold, demolding and drying and sintering. In the ceramic die casting process, the die structure directly influences the dimensional accuracy, compactness and surface quality of the finished product. Particularly, in the pressurizing stage, if residual gas in the pug or in the die cavity cannot be discharged in time, air holes, air-trapping layers or loose-structure areas are easily formed in the molded body, so that the problems of insufficient strength, uneven density, easy cracking and the like of the product are caused. In addition, the unsmooth demolding of the mold can also cause subsequent process problems such as mold sticking, deformation and the like of the product. In view of the above, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a ceramic die casting mold capable of reducing the porosity, solving the problems and improving the practical value by the above technique. Disclosure of Invention The utility model aims to solve the problems of air holes, insufficient compactness and the like of a formed part caused by gas residues in the forming process of the traditional ceramic die-casting die, and provides a ceramic die-casting forming die capable of reducing the porosity. In order to achieve the above purpose, the utility model adopts the following technical scheme: A ceramic die-casting forming die capable of reducing porosity comprises a fixed die, a casting die, a section die and a plurality of side punch assemblies arranged on the periphery of the fixed die; Wherein: The die is arranged in the fixed die, a die cavity and a plurality of punch grooves are formed in the inner side of the die, a plurality of thimble air holes are further formed in the bottom of the die, the casting die is arranged above the fixed die, a release agent spraying pump is arranged on the top surface of the casting die, release agent can be sprayed to the inner surface of the die cavity before die casting, and the plurality of side punch assemblies are symmetrically distributed on the periphery of the die and used for executing secondary die casting action so as to improve compaction effect and realize die cavity air exhaust. Each side punch assembly comprises a guide rail seat, a control rod, a sliding seat, a punch block, a guide rail seat, a control rod, a guide rail seat, a control rod, a guide rail seat and a guide rail seat, wherein the guide rail seat is fixed at one end of the guide rail seat; The punch block is used for moving along the direction of the punch groove and penetrating into the die cavity for secondary compaction after primary die casting, and a plurality of exhaust holes are formed in the punch block and used for exhausting residual gas in the die cavity in the die casting or compaction process. The release agent spraying pump can be a pneumatic atomization spray nozzle, and a nozzle of the pneumatic atomization spray nozzle is arranged towards the bottom of the die cavity, so that the release agent is ensured to be atomized to uniformly cover the inner surface of the die cavity. The thimble air holes form an air channel in the air exhausting stage, and form positive pressure air exhausting effect in the process of opening or secondary compaction of the die, so that the air exhausting efficiency is further improved. The beneficial effects obtained by the utility model are as follows: 1. The ceramic blank is subjected to secondary compaction, namely, the primary pressed pug is subjected to secondary compaction along the direction of a punch groove through a side punch assembly, so that the forming compactness is effectively improved, and the forming defects are reduced; 2. The high-efficiency active exhaust structure is characterized in that the punch block is provided with an exhaust hole, and the auxiliary ventilation is combined with the ejector pin air hole, so that the residual gas in the die cavity is rapidly exhausted, and the internal air hole is remarkably reduced; 3. The demolding performance is improved, namely the demolding agent spraying pump can spray the mold cavity in an atomizing way before die casting, so that the demolding performance of the mold is improved, and the surface adhesion or deformation of a blank body is avoided; In conclusion, the utility model effectively solves the pro