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CN-224210365-U - Hot-press forming die for processing silica gel base

CN224210365UCN 224210365 UCN224210365 UCN 224210365UCN-224210365-U

Abstract

The utility model discloses a hot-press forming die for processing a silica gel seat, which comprises an upper die and a lower die, wherein a core strip is arranged between the upper die and the lower die, an upper groove is arranged on the lower surface of the upper die, a lower groove is arranged on the upper surface of the lower die, the upper groove and the lower groove are folded to form a core strip groove, the core strip is arranged in the core strip groove, one side of the core strip is a forming surface, a core is arranged on the forming surface of the core strip, an upper die cavity is arranged beside the upper groove of the upper die, a lower die cavity is arranged beside the lower groove of the lower die, the core is arranged in a space formed by folding the upper die cavity and the lower die cavity, the core comprises a core bottom, a core middle and a core top, the core middle is sequentially arranged on the forming surface of the core strip, and the core middle is a disc type and forms a bulge relative to the core bottom and the core top. The hot-press forming die for processing the silica gel seat, disclosed by the utility model, has the advantages that the forming efficiency is ensured, a stable and uniform stress surface is provided for demolding through the bowl-shaped cambered surface on the peripheral surface of the middle part of the mold core, and the rejection rate generated during demolding is reduced.

Inventors

  • MA LEI

Assignees

  • 昆山钜硕电子有限公司

Dates

Publication Date
20260508
Application Date
20250512

Claims (7)

  1. 1. A hot press molding die for processing a silica gel base is characterized by comprising: the upper die (1) and the lower die (2), wherein a core strip (3) is arranged between the upper die (1) and the lower die (2); An upper groove (11) is formed in the lower surface of the upper die (1), a lower groove (21) is formed in the upper surface of the lower die (2), the upper groove (11) and the lower groove (21) are folded to form a core strip groove (31), and the core strip (3) is arranged in the core strip groove (31); one side of the core strip (3) is a forming surface (32), a core (4) is arranged on the forming surface (32) of the core strip (3), an upper die cavity (12) is arranged beside an upper groove (11) of the upper die (1), a lower die cavity (22) is arranged beside a lower groove (21) of the lower die (2), and the core (4) is arranged in a space formed by folding the upper die cavity (12) and the lower die cavity (22) and is matched with the forming surfaces (32) of the upper die cavity (12), the lower die cavity (22) and the core strip (3) to form a die cavity; The core (4) comprises a core bottom (41), a core middle (42) and a core top (43); The core bottom (41), the core middle (42) and the core top (43) are sequentially arranged on the molding surface (32) of the core strip (3) and are similar to columns, and the core middle (42) is of a disc shape and protrudes relative to the core bottom (41) and the core top (43).
  2. 2. The hot press molding die for manufacturing a silica gel base according to claim 1, wherein the center portion (42) of the core has a bowl-shaped arc surface on its peripheral surface, and one end near the bottom portion (41) of the core has a minimum radius.
  3. 3. The hot press molding die for processing the silica gel base according to claim 1, wherein the length of the core strip (3) is larger than the length of the core strip groove (31), the lower surface of the upper die (1) is attached to the upper surface of the lower die (2) when the dies are closed, the core strip (3) is attached to the core strip groove (31), and the product is formed by hot press molding in the upper die cavity (12), the lower die cavity (22) and the molding surface (32) of the core strip (3) in a matched mode.
  4. 4. A hot press molding die for molding a silica gel base according to claim 1, wherein the core top (43) is cylindrical, and the core top (43) cooperates with the upper cavity (12) and the lower cavity (22) to form a through hole at the top of the product when the mold is closed.
  5. 5. The hot press molding die for processing the silica gel base according to claim 1, wherein the upper die cavity (12) and the lower die cavity (22) are respectively provided with a middle annular groove (121), and the middle annular groove (121) is opposite to the joint of the core bottom (41) and the core middle (42).
  6. 6. The hot press molding die for processing the silica gel base according to claim 1, wherein the upper die cavity (12) and the lower die cavity (22) are respectively provided with a base groove (122), and the base grooves (122) are opposite to one end of the core bottom (41) close to the molding surface (32) of the core strip (3).
  7. 7. The hot press molding die for processing a silica gel base according to claim 1, wherein 2 or more cores (4) are provided on the core bar (3).

Description

Hot-press forming die for processing silica gel base Technical Field The utility model belongs to the field of novel mold processing, and particularly relates to a hot-press forming mold for processing a silica gel seat. Background In the production process of the silica gel base, the conventional hot press molding process needs to design a mold for processing to realize the molding and demolding of the silica gel base. However, there are problems in mold design, which affect production efficiency and product quality. For example, the design of the demoulding slope of the mould is unreasonable, if the demoulding slope is insufficient, the silica gel product can receive larger resistance during demoulding, which is easy to cause demoulding failure or damage to the product, and uneven demoulding slope can also cause uneven stress of the silica gel product during demoulding, and the demoulding resistance of local area is too large, thereby further affecting the demoulding effect. Meanwhile, if a plurality of cores are designed for forming a complex internal structure, the matching and positioning requirements among the cores are extremely high, and once the cores are positioned inaccurately or are not matched properly, the internal structure defect of the silica gel product can be caused, so that the demolding difficulty is increased. The problems not only reduce the production efficiency, but also improve the rejection rate, and bring challenges to mass production of the silica gel base. Disclosure of utility model The utility model aims to overcome the defects, and provides a hot press forming die for processing a silica gel seat, which is used for ensuring the forming efficiency by synchronously processing an upper die, a lower die and a core strip together with a plurality of cores through the design of the upper die, the lower die and the core strip, and simultaneously providing a stable and uniform stress surface for demolding through a bowl-shaped cambered surface on the peripheral surface of the middle part of the core, so that the rejection rate generated during demolding is reduced. The hot-press forming die for the silica gel seat comprises an upper die and a lower die, a core strip is arranged between the upper die and the lower die, an upper groove is formed in the lower surface of the upper die, a lower groove is formed in the upper surface of the lower die, the upper groove and the lower groove are folded to form a core strip groove, the core strip is arranged in the core strip groove, one side of the core strip is a forming surface, a core is arranged on the forming surface of the core strip, an upper die cavity is arranged beside the upper groove of the upper die, a lower die cavity is arranged beside the lower groove of the lower die, the core is arranged in a space formed by folding the upper die cavity and the lower die cavity and is matched with the forming surfaces of the upper die cavity, the lower die cavity and the core strip to form a die cavity, the core comprises a core bottom, a core middle part and a core top, the core bottom, the core middle part and the core top are sequentially arranged on the forming surfaces of the core strip and are columnar, and the core middle part is a disc-shaped, and is protruded relative to the core bottom and the top. Furthermore, the close fit of the upper die and the lower die and the accurate embedding of the core strip provide smoother demolding paths, ensure that the silica gel is uniformly filled into each part of the die in the molding process, avoid stress concentration caused by abrupt change of the shape of the die, ensure that the silica gel can be rapidly filled into each part of the die in the molding process, reduce the molding time, shorten the molding period and improve the production efficiency, and simultaneously ensure that the bulge design and smooth transition in the middle part of the core can reduce the generation of bubbles and cavities in the molding process, ensure that the silica gel can flow more smoothly in the filling process and reduce the trapping of gas. Furthermore, the peripheral surface of the middle part of the mold core is a bowl-shaped cambered surface, one end close to the bottom of the mold core is a position with the smallest radius, and the contact area between the silica gel seat and the mold core is gradually reduced during demolding, so that the demolding resistance is reduced, the demolding process is smoother, and the pulling and damage to the silica gel seat during demolding are reduced. When the die is assembled, the lower surface of the upper die is attached to the upper surface of the lower die, the core strip is attached to the core strip groove, and the product is formed by hot press molding in the upper die cavity, the lower die cavity and the molding surface of the core strip in a matching way. And meanwhile, the close fit of the core strip and the core strip groove ensures that the product canno