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CN-224210367-U - Hot-press forming die for producing hinge cover

CN224210367UCN 224210367 UCN224210367 UCN 224210367UCN-224210367-U

Abstract

The utility model discloses a hot-press forming die for producing a hinge cover, which comprises an upper die, a lower die and a middle plate, wherein the middle plate is arranged between the upper die and the lower die, a forming boss is arranged on the upper die, a forming die cavity is arranged on the middle plate, the forming die cavity is matched with the forming boss, a groove is arranged in the middle of the middle plate, a lug is arranged in the middle of the lower die, the lug is matched with the groove, a forming column and a forming through hole are arranged in the forming die cavity, the forming through hole is communicated with the groove, a forming groove is arranged on the lug, and the position of the forming groove is opposite to that of the forming through hole. According to the utility model, through the design of the upper die, the lower die and the middle plate, the hot press molding of the complex hinge cover is realized, the quality of products is ensured, and the high economic benefit is realized.

Inventors

  • He Zhouhu
  • MA LEI

Assignees

  • 昆山钜硕电子有限公司

Dates

Publication Date
20260508
Application Date
20250526

Claims (8)

  1. 1. A hot press molding die for producing a hinge cover is characterized by comprising: the upper die (1), the lower die (2) and the middle plate (3), wherein the middle plate (3) is arranged between the upper die (1) and the lower die (2); The upper die (1) is provided with a forming boss (11), the middle plate (3) is provided with a forming die cavity (31), the forming die cavity (31) is matched with the forming boss (11), a groove (32) is formed in the middle of the middle plate (3), a protruding block (21) is arranged in the middle of the lower die (2), and the protruding block (21) is matched with the groove (32); The forming die is characterized in that a forming column (311) and a forming through hole (312) are arranged in the forming die cavity (31), the forming through hole (312) is communicated with the groove (32), a forming groove (211) is formed in the protruding block (21), and the position of the forming groove (211) is opposite to that of the forming through hole (312).
  2. 2. A hot press molding die for producing a hinge cover according to claim 1, wherein the molding boss (11) includes a first plane (111), a second plane (112) and an arc transition plane (113), the first plane (111) has a height greater than the second plane (112), and the second planes (112) between the first planes (111) are smoothly transitionally connected by the arc transition plane (113).
  3. 3. A hot press molding die for producing a hinge cover according to claim 2, wherein the molding boss (11) and the molding cavity (31) are each H-shaped, the molding post (311) and the molding through hole (312) are located at two corners on the same side, the molding post (311) is opposite to the second plane (112), and the molding through hole (312) is opposite to the first plane (111).
  4. 4. A hot press molding die for manufacturing a hinge cover according to claim 1, wherein the molding groove (211) is hemispherical.
  5. 5. A hot press molding die for manufacturing a hinge cover according to claim 4, wherein the molding through hole (312) has an upper section (3121) having a larger diameter and a lower section (3122) having a smaller diameter, and the upper section (3121) and the lower section (3122) are connected by a middle section (3123) which is disposed obliquely.
  6. 6. A hot press molding die for manufacturing a hinge cover according to claim 5, wherein a bell mouth (3124) is connected to the bottom of the lower section (3122), and the bottom diameter of the bell mouth (3124) is equal to the top diameter of the molding groove (211).
  7. 7. A hot press molding die for producing hinge covers according to claim 1, wherein at least two rows of molding bosses (11) are provided on the upper die (1) in a length direction thereof, each row including a plurality of molding bosses (11), and the number of molding cavities (31) and molding grooves (211) is identical to the number of molding bosses (11).
  8. 8. A hot press molding die for producing hinge covers according to claim 1, wherein the lower die (2) is provided with a rectangular groove (22), the width of the rectangular groove (22) is the same as that of the middle plate (3), the vertical face of the rectangular groove (22) is provided with an arc-shaped protrusion (221), and the side face of the middle plate (3) is provided with an arc-shaped groove (33) matched with the arc-shaped protrusion (221).

Description

Hot-press forming die for producing hinge cover Technical Field The utility model belongs to the technical field of hot-press dies, and particularly relates to a hot-press forming die for producing a hinge cover. Background The main production methods of hinge covers at present are injection molding and hot press molding. However, the injection molding die has high cost and large investment in the early stage, and the hinge covers made of special materials or structures may have a problem of difficult molding. The hot press molding efficiency is higher, the product quality is better, the size and the shape can be accurately controlled, the material adaptability is strong, the equipment investment and the die cost are lower than those of injection molding, but the design and the molding of the hinge cover with the complex shape are limited to a certain extent. The hot press molding needs to design corresponding dies, but the existing dies of the dies have defects in molding efficiency and effect. As shown in FIG. 7, the whole hinge cover is H-shaped, two ends are respectively provided with a post and a boss post, the bottom of the boss post is also provided with a reversely buckled mushroom head, and the base body of the hinge cover is also provided with a smooth transitional cambered surface. The shape and structure are complex. The traditional hot-pressing die is not easy to mold, more burrs are easily generated on the molded product, and the molding effect is poor. Disclosure of utility model The utility model aims to overcome the defects, and the hot press forming die for producing the hinge cover is provided, the forming effect of a hinge seat is ensured through the design of an upper die, a lower die and a middle plate, and the production efficiency is improved through the simultaneous processing of a plurality of cavities. In order to achieve the above object, the present utility model provides a hot press molding die for producing a hinge cover, comprising: The upper die, the lower die and the middle plate are arranged between the upper die and the lower die; The upper die is provided with a forming boss, the middle plate is provided with a forming die cavity, the forming die cavity is matched with the forming boss, a groove is formed in the middle of the middle plate, a lug is arranged in the middle of the lower die, and the lug is matched with the groove; The forming die cavity is internally provided with a forming column and a forming through hole, the forming through hole is communicated with the groove, the convex block is provided with a forming groove, and the position of the forming groove is opposite to that of the forming through hole. Further, the molding boss comprises a first plane, a second plane and an arc transition plane, the height of the first plane is larger than that of the second plane, and the second planes between the first planes are in smooth transition connection through the arc transition plane. The first plane, the second plane and the arc transition surface form a smooth arc transition surface on the hinge cover. Further, the forming boss and the forming die cavity are both H-shaped, the forming column and the forming through hole are positioned on two corners of the same side, the forming column is opposite to the second plane, and the forming through hole is opposite to the first plane. Further, the forming groove is hemispherical. Further, the upper section with larger diameter of the forming through hole and the lower section with smaller diameter are connected through the middle section which is obliquely arranged. The material forms a boss column with a chamfer in the formed through hole. Further, the bottom of hypomere is connected with the horn mouth, the bottom diameter of horn mouth equals with the top diameter of shaping groove. The horn mouth and the hemispherical forming groove form a shape cavity of the inverted mushroom head. Further, at least two rows of forming bosses are arranged on the upper die along the length direction of the upper die, each row comprises a plurality of forming bosses, and the number of forming die cavities and forming grooves is consistent with that of the forming bosses. The hinge cover is designed to be in a mode of one mould with multiple cavities, and multiple hinge covers can be formed by one-time hot pressing, so that the processing efficiency is improved. Further, the lower die is provided with a rectangular groove, the width of the rectangular groove is the same as that of the middle plate, the vertical face of the rectangular groove is provided with an arc-shaped bulge, and the side face of the middle plate is provided with an arc-shaped groove matched with the arc-shaped bulge. When the die is assembled, the periphery of the middle plate is clamped into the rectangular groove to limit, and locking is realized through the cooperation of the arc-shaped groove and the arc-shaped bulge. The deformation of the product caused b