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CN-224224348-U - Mould structure of right angle gasket

CN224224348UCN 224224348 UCN224224348 UCN 224224348UCN-224224348-U

Abstract

The utility model relates to a die structure of a right-angle gasket. When the right-angle gasket is produced by the existing mould, the problems of air coiling, edge drawing and difficult demoulding exist. The utility model comprises an upper die, a lower die and a plurality of inserts, wherein a plurality of cavities are formed between the upper die and the lower die, a plurality of clamping grooves communicated with the cavities are formed in the lower die, the inserts are respectively arranged in the clamping grooves and are in clearance fit with the clamping grooves, and when the inserts are taken out of the clamping grooves, gaskets in the cavities are completely exposed in an operable space. The utility model ensures that the gas generated by the flowing of the sizing material in the product vulcanization process can overflow from the gap between the insert and the clamping groove, reduces turbulence, turbulence and flow generated in the rubber flowing process, is beneficial to the exhaust of the product in vulcanization, further can effectively prevent the phenomena of gas rolling, edge pumping and the like, is beneficial to the demolding of the product and prevents the product from being blocked in the cavity, thereby greatly improving the production efficiency.

Inventors

  • QIAO YANG
  • Kou Xun
  • WANG JIAO
  • LI DONGQIU
  • ZHAO YUNFEI

Assignees

  • 西北橡胶塑料研究设计院有限公司

Dates

Publication Date
20260512
Application Date
20250516

Claims (10)

  1. 1. The die structure of the right-angle gasket comprises an upper die (1) and a lower die (2) and is characterized by further comprising a plurality of inserts (3); a plurality of cavities (4) are formed between the upper die (1) and the lower die (2); The lower die (2) is provided with a plurality of clamping grooves (5) communicated with the die cavity (4), the inserts (3) are respectively arranged in the clamping grooves (5), the inserts (3) and the clamping grooves (5) form clearance fit, and when the inserts (3) are taken out of the clamping grooves (5), gaskets in the die cavity (4) are completely exposed in an operable space.
  2. 2. The die structure for right angle gaskets of claim 1, wherein: the upper end face of the lower die (2) is provided with a plurality of grooves.
  3. 3. A die structure for right angle gaskets as defined in claim 2, wherein: The lower end face of the upper die (1) is provided with a plurality of convex blocks corresponding to the grooves.
  4. 4. A die structure for right angle gaskets as defined in claim 3, wherein: The width of the convex block is consistent with the width of the groove, and the height and the length of the convex block are smaller than those of the groove.
  5. 5. The die structure for right angle gaskets of claim 4, wherein: The gap between the projection and the recess forms the cavity (4).
  6. 6. The die structure for right angle gaskets of claim 1, wherein: The die cavities (4) are distributed in a shape of a Chinese character kou.
  7. 7. A die structure for right angle gaskets as defined in claim 2, wherein: the clamping groove (5) is long-strip-shaped, the vertical section is rectangular or square, the upper end face of the clamping groove (5) is flush with the upper end face of the lower die (2), and the lower end face of the clamping groove (5) is lower than the bottom of the groove.
  8. 8. The die structure for right angle gaskets of claim 1, wherein: the clamping grooves (5) are distributed on two sides of the cavity (4) at intervals in parallel.
  9. 9. The die structure for right angle gaskets of claim 1, wherein: The insert (3) is identical to the clamping groove (5) in size.
  10. 10. The die structure for right angle gaskets of claim 1, wherein: The upper die (1) and the lower die (2) are fixed in a positioning way through positioning pins.

Description

Mould structure of right angle gasket Technical Field The utility model relates to the technical field of rubber molds, in particular to a mold structure of a right-angle gasket. Background The rubber gasket is used between two objects, mainly plays a role in sealing and damping, and can generally prevent the leakage of a system caused by mechanical abrasion generated by the action of pressure and the like between two workpieces. The traditional rubber gasket is formed by adopting a two-open type die, the die is divided into an upper die and a lower die, a semi-finished product is placed in a product cavity during vulcanization, sizing materials are subjected to flow forming by means of pressing of the upper die, but for irregular gasket structures, such as gasket products with right angles, sizing materials of the traditional die can only flow out from a parting line, rubber fluid is heated at the same time, the flow speed of rubber in the die cavity is increased sharply under high pressure, fluctuation swing and vortex turbulence are generated in the fluid, so that gas is difficult to discharge at the right angle of the die cavity, product rolling is caused, turbulent flow and the like of sizing materials at the parting surface of the die are easy to generate, meanwhile, products can be inlaid in the lower die cavity after vulcanization of the products is finished, the thin-wall gasket is easy to be tightly attached to the cavity, negative pressure strips can be formed between the gasket and the die cavity wall, and the demolding space of the products is small, and thus the products are difficult to demold, and tearing of the products is easy to cause. Therefore, there is a need for a mold structure for right angle gaskets that is not prone to air coiling and edge drawing during vulcanization and is easy to release. Disclosure of Invention The utility model aims to provide a die structure of a right-angle gasket, which at least solves the problems that the conventional die is easy to roll, draw edges and difficult to demould when used for producing the right-angle gasket. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the die structure of the right-angle gasket comprises an upper die, a lower die and a plurality of inserts; a plurality of cavities are formed between the upper die and the lower die; The lower die is provided with a plurality of clamping grooves communicated with the cavity, the inserts are respectively arranged in the clamping grooves, the inserts are in clearance fit with the clamping grooves, and when the inserts are taken out of the clamping grooves, gaskets in the cavity are completely exposed in an operable space. Further, the upper end face of the lower die is provided with a plurality of grooves. Further, the lower end face of the upper die is provided with a plurality of protruding blocks corresponding to the grooves. Further, the width of the protruding block is consistent with the width of the groove, and the height and the length of the protruding block are smaller than those of the groove. Further, a gap between the projection and the groove forms the cavity. Furthermore, the cavities are distributed in a shape of a Chinese character kou. Further, the clamping groove is long-strip-shaped, the vertical section is rectangular or square, the upper end face of the clamping groove is flush with the upper end face of the lower die, and the lower end face of the clamping groove is lower than the bottom of the groove. Furthermore, the clamping grooves are distributed on two sides of the cavity in parallel at intervals. Further, the insert is identical to the clamping groove in size. Further, the upper die and the lower die are fixed in a positioning manner through positioning pins. Compared with the prior art, the utility model has the following beneficial effects: 1. The utility model provides a die structure of a right-angle gasket, wherein clamping grooves and inserts are arranged on two sides of a die cavity, and the inserts and the clamping grooves are in clearance fit, so that gas generated by glue flowing in the product vulcanization process can overflow from the clearance between the inserts and the clamping grooves, the phenomena of turbulence, turbulent flow and the like generated in the rubber flowing process are effectively reduced, better exhaust of the product in vulcanization is facilitated, further phenomena such as gas coiling and edge pumping are effectively prevented, meanwhile, the demolding of the product is facilitated, the inserts are taken out of the clamping grooves in demolding, the gasket in the die cavity can be completely exposed in an operable space, negative pressure generated by tightly fitting the die cavity of the product can be relieved, demolding of the product is facilitated, tearing and deformation of the product in the demolding process is prevented, and for small and thin-wall embedded gask