CN218362087U

CN218362087U - Forming die of porous piece

Info

Publication number: CN218362087U
Application number: CN202222591791.2U
Authority: CN
Inventors: 蓝楷; 李宁
Original assignee: Shijiazhuang Jingshi New Material Technology Co ltd
Current assignee: Shijiazhuang Jingshi New Material Technology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-01-24
Anticipated expiration: 2032-09-29

Abstract

A porous block forming die belongs to the field of die manufacturing and comprises a forming female die, a forming upper punch, a forming lower punch, a forming upper core rod and a forming middle core rod, wherein a first groove for forming a large rectangular gear tooth-shaped structure at the outer edge of a porous block and a second groove for forming a small rectangular gear tooth-shaped structure are formed in the inner cavity of the forming female die, and the end parts of the forming upper punch and the forming lower punch respectively extend into the inner cavity to form a porous block cavity; the end parts of the upper forming core rod and the middle forming core rod respectively penetrate through the upper forming punch and are matched with the lower forming punch hole to form the shaft hole cavity. Through the reasonable design of the structure of each part, the general powder metallurgy technology realizes the large-batch and high-precision manufacture of the porous block, and reduces the labor cost and the die cost.

Description

Forming die of porous piece

Technical Field

The utility model belongs to the mould field of making, concretely relates to forming die of porous piece.

Background

The mold is a variety of molds and tools used for molding the required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping, stretching and other methods in industrial production. Powder metallurgy is an industrial technology for preparing metal powder or metal powder (or a mixture of metal powder and nonmetal powder) as a raw material, and preparing metal materials, composite materials and various products by molding and sintering. The powder metallurgy technology has a series of advantages of obvious energy saving, material saving, excellent performance, high product precision, good stability and the like, and is very suitable for mass production. When the powder metallurgy technology is adopted to form products, the design of a die is very important.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a forming die of porous piece, through the structure of each part of rational design, the manufacturing of big batch, the high accuracy of porous piece is realized to general powder metallurgy technique, reduces cost of labor and mould cost.

The utility model adopts the technical proposal that: a porous block forming die comprises a forming female die, a forming upper punch, a forming lower punch, a forming upper core rod and a forming middle core rod, wherein a first groove for forming a large rectangular gear tooth-shaped structure and a second groove for forming a small rectangular gear tooth-shaped structure at the outer edge of a porous block are formed in an inner cavity of the forming female die, and the end parts of the forming upper punch and the forming lower punch respectively extend into the inner cavity to form a porous block cavity;

and the end parts of the upper molding core rod and the middle molding core rod respectively penetrate through the upper molding punch and are matched with the lower molding punch to form a shaft hole cavity.

Furthermore, the outer edge of the end part of the forming upper punch is provided with an upper punch protrusion matched with the second groove; and the outer edge of the lower forming punch end is provided with a lower punch bulge matched with the first groove.

Furthermore, a weight-reducing core rod gland for bearing the weight-reducing core rod group is arranged below the lower forming punch, and weight-reducing core rod punching holes matched with the weight-reducing core rods are arranged in the lower forming punch and the upper forming punch.

Further, the upper molding core rod comprises a cylindrical part, a guiding cylindrical part connected with the cylindrical part and matched with the upper molding punch middle through hole, and a conical part arranged between the cylindrical part and the guiding cylindrical part, wherein the conical part is used for forming a conical angle hole of the shaft hole cavity.

Furthermore, the unilateral gap between the forming female die and the forming upper punch and the forming lower punch is 0.01-0.015 mm.

Further, the unilateral gaps between the upper forming core rod and the middle forming core rod and between the upper forming punch and the lower forming punch are 0.01-0.015 mm respectively.

Adopt the utility model discloses the beneficial effect who produces: through reasonable design of the structures of all parts, the universal powder metallurgy technology realizes the mass and high-precision manufacture of the porous block, and reduces the labor cost and the die cost.

Drawings

Fig. 1 is a schematic view of the overall structure of the forming die of the present invention;

FIG. 2 is a schematic top view of the female forming die;

fig. 3 is a schematic top view of the forming punch;

FIG. 4 is a schematic top view of a forming punch;

fig. 5 is a schematic structural view of the porous block molded by the mold of the present invention.

Detailed Description

Referring to the attached drawings 1-5, a porous block forming die comprises a forming female die 1, a forming upper punch 2, a forming lower punch 3, a forming upper core rod 4 and a forming middle core rod 5, wherein a first groove 1-1 for forming a gear-shaped structure of a large rectangular gear on the outer edge of a porous block and a second groove 1-2 for forming a tooth-shaped structure of a small rectangular gear are formed in an inner cavity of the forming female die 1, and the end parts of the forming upper punch 2 and the forming lower punch 3 respectively extend into the inner cavity to form a porous block cavity;

the end parts of the upper forming core rod 4 and the middle forming core rod 5 respectively penetrate through the upper forming punch 2 and are matched with the hole of the lower forming punch 3 to form a shaft hole cavity.

The outer edge of the end part of the forming upper punch 2 is provided with an upper punch bulge 2-1 matched with the second groove 1-2; the outer edge of the end part of the lower molding punch 3 is provided with a lower punch bulge 3-1 matched with the first groove 1-1.

A weight-reducing core rod gland 8 for bearing a weight-reducing core rod 7 group is arranged below the forming lower punch 3, and a weight-reducing core rod punching hole 6 matched with the weight-reducing core rod 7 is arranged in the forming lower punch 3 and the forming upper punch 2. The weight-reducing core rod punching holes 6 are arranged in two circles, and each circle is not less than 6.

The upper forming core rod 4 comprises a cylindrical part, a guiding cylindrical part connected with the cylindrical part and matched with the middle through hole of the upper forming punch 2, and a conical part 4-1 arranged between the cylindrical part and the guiding cylindrical part, wherein the conical part is used for forming a conical angle hole 9 of the shaft hole cavity.

In order to ensure the precision of the formed porous block, the unilateral clearance between the forming female die 1 and the forming upper punch 2 and the forming lower punch 3 is 0.01-0.015 mm. The single-side gaps between the upper forming core rod 4 and the middle forming core rod 5 and between the upper forming punch 2 and the lower forming punch 3 are 0.01-0.015 mm.

The utility model discloses a mould is when specifically using, and each part in the device is supporting as required to have lift drive. Firstly, a forming female die 1 and a forming lower punch 3 are mutually matched to form a cavity, then powder is filled in the cavity, a forming middle core rod 5 and a weight-reducing core rod 7 group rise, a forming upper core rod 4 and a forming upper punch 2 descend, and a porous block is obtained through opposite punching. After the pressing is finished, the lower forming punch 3, the middle forming core rod 5 and the weight-reducing core rod 7 are respectively lowered, the upper forming core rod 4 and the upper forming punch 2 are respectively raised, the formed workpiece is taken out, and the demoulding is finished.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications can still be made to the embodiments of the invention or equivalents may be substituted for some of the features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. The utility model provides a forming die of porous piece, includes that shaping bed die (1), shaping are gone up punch (2), shaping are gone up punch (3), shaping and are gone up plug (4) and shaping in plug (5), its characterized in that: a first groove (1-1) for forming a gear-shaped structure of a big rectangular gear on the outer edge of the porous block and a second groove (1-2) for forming a gear-shaped structure of a small rectangular gear are arranged in the inner cavity of the forming female die (1), and the end parts of the forming upper punch (2) and the forming lower punch (3) respectively extend into the inner cavity to form a cavity of the porous block;

the end parts of the upper forming core rod (4) and the middle forming core rod (5) respectively penetrate through the upper forming punch (2) and the hole of the lower forming punch (3) to be matched to form a shaft hole cavity.

2. The porous block molding die according to claim 1, wherein: the outer edge of the end part of the forming upper punch (2) is provided with an upper punch bulge (2-1) matched with the second groove (1-2); the outer edge of the end part of the lower forming punch (3) is provided with a lower punch bulge (3-1) matched with the first groove (1-1).

3. The porous block molding die according to claim 1, wherein: a weight-reducing core rod gland (8) for bearing a weight-reducing core rod (7) group is arranged below the lower forming punch (3), and weight-reducing core rod punching holes (6) matched with the weight-reducing core rods (7) are arranged in the lower forming punch (3) and the upper forming punch (2).

4. The porous block molding die according to claim 1, wherein: the upper forming core rod (4) comprises a cylindrical part, a guiding cylindrical part connected with the cylindrical part and matched with a middle through hole of the upper forming punch (2), and a conical part (4-1) arranged between the cylindrical part and the guiding cylindrical part, wherein the conical part is used for forming a conical angle hole (9) of the shaft hole cavity.

5. The porous block molding die according to claim 1, wherein: and the unilateral clearance between the forming female die (1) and the forming upper punch (2) and between the forming lower punch (3) is 0.01-0.015 mm.

6. The porous block molding die according to claim 1, wherein: the single-side gaps between the upper forming core rod (4) and the middle forming core rod (5) and the upper forming punch (2) and the lower forming punch (3) are 0.01-0.015 mm.