Powder metallurgy forming die for three-hole pad

Abstract

A powder metallurgy forming die for a three-hole pad belongs to the field of die manufacturing and comprises a forming female die, an upper forming punch, a lower forming punch and a core rod, a first groove used for forming an outer contour structure of the three-hole pad is formed in an inner cavity of the forming female die, and a second groove matched with the first groove is formed in the end of the lower forming punch. Through hole sets matched with the core rod are evenly formed in the upper forming punch and the lower forming punch, and the upper forming punch, the lower forming punch and the core rod sequentially stretch into the inner cavity to form a three-hole pad cavity. By reasonably designing the structures of all the parts, large-batch and high-precision manufacturing of the three-hole pad is achieved through the general powder metallurgy technology, and the labor cost and the mold cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of mold manufacturing, and in particular relates to a powder metallurgy forming mold for a three-hole pad. Background Art

[0002] Molds are various molds and tools used in industrial production to form the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping, stretching and other methods. Powder metallurgy is an industrial technology that produces metal powder or uses metal powder (or a mixture of metal powder and non-metallic powder) as raw materials, and produces metal materials, composite materials and various types of products through molding and sintering. Powder metallurgy technology has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision and good stability, and is very suitable for mass production. When using powder metallurgy technology to form products, the design of the mold is crucial.

[0003] For small three-hole pads, powder metallurgy technology can be used to manufacture them, reducing the number of processes, improving efficiency, and reducing the labor intensity of production personnel. Since the three-hole pad is a special-shaped workpiece, a specific molding die is required for pressing and molding. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a powder metallurgy forming die for a three-hole pad, and through reasonable design of the structure of each component, general powder metallurgy technology is used to achieve large-scale and high-precision manufacturing of the three-hole pad, thereby reducing labor costs and mold costs.

[0005] The technical solution adopted by the utility model is: a powder metallurgy forming mold for a three-hole pad, including a forming female mold, a forming upper punch, a forming lower punch and a core rod, a first groove for forming the outer contour structure of the three-hole pad is arranged in the inner cavity of the forming female mold, a second groove matching the first groove is arranged at the end of the forming lower punch, a through hole group matching the core rod is evenly arranged in the forming upper punch and the forming lower punch, and the forming upper punch, the forming lower punch and the core rod are sequentially extended into the inner cavity to form a three-hole pad cavity.

[0006] Furthermore, arc-shaped protrusions are symmetrically provided on both sides of the first groove.

[0007] Furthermore, the core rod is divided into a middle core rod, and left and right core rods symmetrically arranged on both sides of the middle core rod.

[0008] Furthermore, the single-side clearance between the forming female die and the forming upper punch and the forming lower punch is 0.01-0.015 mm.

[0009] Furthermore, the single-side gap between the core rod and the forming lower punch and the forming upper punch is 0.01-0.015 mm.

[0010] The beneficial effects produced by adopting the utility model are as follows: through the reasonable design of the structure of each component, the general powder metallurgy technology can realize the mass and high-precision manufacturing of the three-hole pad, and the labor cost and the mold cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the female forming mold;

[0012] Figure 2 It is a schematic diagram of the structure of the forming upper punch;

[0013] Figure 3 It is a structural schematic diagram of the forming lower punch;

[0014] Figure 4 It is a schematic diagram of the structure of the middle core rod;

[0015] Figure 5 It is a schematic diagram of the structure of the left and right mandrels;

[0016] Figure 6 yes Figure 1 Enlarged view of middle Ⅰ;

[0017] Figure 7 yes Figure 6 Enlarged view of middle Ⅱ;

[0018] Figure 8 It is a three-view drawing of a three-hole pad;

[0019] In the accompanying drawings: 1 is a forming female mold, 1-1 is a first groove, 1-2 is an arc-shaped protrusion, 2 is a forming upper punch, 3 is a forming lower punch, 3-1 is a second groove, 4-1 is a middle core rod, 4-2 are left and right core rods, and 5 is a through hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0021] See attached Figure 1-8 A powder metallurgy forming mold for a three-hole pad includes a forming female mold 1, a forming upper punch 2, a forming lower punch 3 and a core rod. A first groove 1-1 for forming the outer contour structure of the three-hole pad is provided in the inner cavity of the forming female mold 1, and a second groove 3-1 matching the first groove 1-1 is provided at the end of the forming lower punch 3. Five groups of through holes matching the core rod are evenly arranged in the forming upper punch 2 and the forming lower punch 3. The forming upper punch 2, the forming lower punch 3 and the core rod are sequentially extended into the inner cavity to form a three-hole pad cavity. Arc-shaped protrusions 1-2 are symmetrically provided on both sides of the first groove 1-1. The core rod is divided into an intermediate core rod 4-1, and left and right core rods 4-2 are symmetrically arranged on both sides of the intermediate core rod.

[0022] To ensure the accuracy of the three-hole pad after forming, the single-side clearance between the forming female mold 1 and the forming upper punch 2 and the forming lower punch 3 is 0.01-0.015mm. The single-side clearance between the core rod and the forming lower punch 3 and the forming upper punch 2 is 0.01-0.015mm.

[0023] When the mold of the utility model is used, each component in the device is equipped with a lifting drive device as needed. First, the forming female mold 1 and the forming lower punch 3 cooperate with each other to form a cavity, and then the powder is filled into the above-mentioned cavity, the core rod rises, the forming upper punch 2 falls, and the three-hole pad is obtained by punching. After the pressing is completed, the forming lower punch 3 and the core rod fall respectively, and the forming upper punch 2 rises, and the formed workpiece is taken out, and the demolding is completed.

[0024] The pressed three-hole pad blank is subjected to sintering, heat treatment and other processes to meet the design requirements of the three-hole pad, and finally forms a three-hole pad as shown in FIG8 .

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A powder metallurgy forming die for a three-hole pad, comprising a forming female die (1), a forming upper punch (2), a forming lower punch (3) and a core rod, characterized in that: A first groove (1-1) for forming the outer contour structure of a three-hole pad is provided in the inner cavity of the female molding die (1), a second groove (3-1) matching the first groove (1-1) is provided at the end of the lower molding punch (3), a group of through holes (5) matching with a core rod are evenly arranged in the upper molding punch (2) and the lower molding punch (3), and the upper molding punch (2), the lower molding punch (3) and the core rod are sequentially extended into the inner cavity to form a three-hole pad cavity.

2. The powder metallurgy forming die of the three-hole pad according to claim 1, characterized in that: Arc-shaped protrusions (1-2) are symmetrically provided on both sides of the first groove (1-1).

3. The powder metallurgy forming die of the three-hole pad according to claim 1, characterized in that: The core rod is divided into a middle core rod (4-1) and left and right core rods (4-2) symmetrically arranged on both sides of the middle core rod.

4. The powder metallurgy forming die of the three-hole pad according to claim 1, characterized in that: The single-side 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.

5. The powder metallurgy forming die of the three-hole pad according to claim 1, characterized in that: The single-side clearance between the core rod and the forming lower punch (3) and the forming upper punch (2) is 0.01-0.015 mm.

Images