A near-net-shape workpiece powder pressing mold

Abstract

This utility model discloses a near-net-shape powder pressing mold for workpieces in the field of powder metallurgy. It includes an upper die, a female die, and a lower die, arranged sequentially from top to bottom. The female die has a vertically formed mounting groove, and a support plate is horizontally positioned on the inner wall of the bottom of the mounting groove. A through groove is vertically formed on the support plate, and a combined mold matching the mounting groove is mounted on the support plate. A cavity is vertically formed through the combined mold. The upper die extends downward into the cavity, and the lower die passes through the through groove of the support plate and extends upward into the cavity. The raw material for forming the workpiece is placed between the upper and lower die in the cavity. This utility model achieves zero material waste, improves production efficiency, and has high energy utilization. All the energy required for processing is ultimately used to form the workpiece, eliminating waste.

Description

Technical Field

[0001] This utility model belongs to the field of powder metallurgy, and specifically relates to a powder pressing mold for near-net-shape workpieces. Background Technology

[0002] In existing technologies, many factories use traditional machining to form U-shaped workpieces. The process involves first cutting steel stock, then using a machining center to shape it into a U-shaped workpiece to meet the final drawing requirements. The disadvantages of traditional machining for U-shaped workpieces are: 1. Significant material waste when machining round bars into U-shaped workpieces; 2. Low production efficiency, producing only 80 pieces in 8 hours; 3. Significant energy waste, as the energy required to remove the material ultimately results in waste disposal. Utility Model Content

[0003] The purpose of this invention is to provide a near-net-shape workpiece powder pressing mold that achieves zero waste of raw materials, improves production efficiency, has high energy utilization, and ensures that all the energy required for processing is ultimately formed into the workpiece without waste.

[0004] The purpose of this utility model is achieved as follows: A near-net-shape powder pressing mold for workpieces includes an upper die punch, a female die, and a lower die punch arranged sequentially from top to bottom. The female die has a vertically formed mounting groove, and a support plate is horizontally arranged on the inner wall of the bottom of the mounting groove. A through groove is vertically formed on the support plate, and a combination mold matching the mounting groove is arranged on the support plate. A cavity is vertically formed through the combination mold. The upper die punch extends downward into the cavity, and the lower die punch passes through the through groove of the support plate and extends upward into the cavity. The raw material for forming the workpiece is placed in the cavity between the upper die punch and the lower die punch.

[0005] In operation, this invention involves installing a powder pressing mold on the template of a press. The raw material powder is fed into the combined mold cavity within the female mold via a powder feeding mechanism. The upper die punch presses downwards into the cavity, while the lower die punch presses upwards. The upper and lower die punches press against each other within the cavity, forming the workpiece shape and achieving the required dimensions. Finally, the lower die punch ejects the workpiece from the female mold. Compared to existing technologies, the advantages of this invention are: 1. No raw material waste: all filling material is used to press the product, resulting in 100% material utilization; 2. High production efficiency: 5700 workpieces are produced in 8 hours; 3. High energy efficiency: all energy consumed during processing is used to form the workpiece, eliminating waste.

[0006] As a further improvement of this utility model, the cross-section of the workpiece is U-shaped, and the cavity is correspondingly arranged with the workpiece, and the cross-section of the cavity is also U-shaped.

[0007] As a further improvement of this utility model, the lower end of the upper die punch is correspondingly disposed to the inner wall of the cavity, and the upper end of the lower die punch is correspondingly disposed to the inner wall of the cavity. The upper and lower die punches press the raw material in the cavity to form the shape of the workpiece.

[0008] As a further improvement of this utility model, the upper part of the combined mold is flush with that of the female mold, the outer periphery of the combined mold is correspondingly arranged with the inner wall of the mounting groove, and the vertical downward projection area of ​​the combined mold is larger than the vertical downward projection area of ​​the support plate. The cavity of the combined mold is used to accommodate raw materials and form workpieces.

[0009] As a further improvement of this utility model, a gap is left between the upper end of the lower die punch and the inner wall of the through groove. This facilitates the up and down movement of the lower die punch. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0011] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0012] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 4 This is a vertical sectional view of the present invention.

[0014] Figure 5 This is the front view of the present invention.

[0015] Figure 6 for Figure 5 A sectional view along line AA.

[0016] Figure 7 for Figure 5 BB-direction sectional view.

[0017] Figure 8 This is a three-dimensional structural diagram of the female mold, the combined mold, and the lower die punch.

[0018] Figure 9 This is a schematic diagram of the female mold.

[0019] Figure 10 This is a schematic diagram of the combined module.

[0020] Among them, 1 is the upper die punch, 2 is the female die, 2a is the support plate, 3 is the lower die punch, 4 is the mounting groove, 5 is the through groove, 6 is the combination die, 7 is the cavity, and 8 is the workpiece. Detailed Implementation

[0021] like Figure 1-10As shown, a near-net-shape powder pressing mold for workpieces includes an upper die punch 1, a female die 2, and a lower die punch 3 arranged sequentially from top to bottom. The female die 2 has a vertically opening mounting groove 4. A support plate 2a is horizontally arranged on the inner wall of the bottom of the mounting groove 4. A through groove 5 is vertically opening on the support plate 2a. A combination mold 6 matching the mounting groove 4 is arranged on the support plate 2a. A cavity 7 is vertically opened through the combination mold 6. The upper die punch 1 extends downward into the cavity 7, and the lower die punch 3 passes through the through groove 5 of the support plate 2a and extends upward into the cavity 7. The raw material for forming the workpiece 8 is placed in the cavity 7 between the upper die punch 1 and the lower die punch 3.

[0022] The workpiece 8 has a U-shaped cross-section, and the cavity 7 is correspondingly positioned to the workpiece 8, also having a U-shaped cross-section. The lower end of the upper die punch 1 is positioned corresponding to the inner wall of the cavity 7, and the upper end of the lower die punch 3 is positioned corresponding to the inner wall of the cavity 7. The upper die punch 1 and the lower die punch 3 press the raw material against each other in the cavity 7 to form the shape of the workpiece 8.

[0023] The upper part of the combination mold 6 is flush with that of the female mold 2. The outer periphery of the combination mold 6 corresponds to the inner wall of the mounting groove 4. The vertical downward projection area of ​​the combination mold 6 is larger than that of the vertical downward projection area of ​​the support plate 2a. The cavity 7 of the combination mold 6 is used to accommodate the raw material and form the workpiece 8. A gap is left between the upper end of the lower die punch 3 and the inner wall of the through groove 5 to facilitate the up and down movement of the lower die punch 3.

[0024] In operation, the powder pressing mold is installed on the template of the press. The raw material powder is filled into the cavity 7 of the combined mold 6 inside the female mold 2 via a powder feeding mechanism. The upper die punch 1 presses down into the cavity 7, and the lower die punch 3 moves upward into the cavity 7. The upper die punch 1 and the lower die punch 3 press against each other within the cavity 7, forming the shape of the workpiece 8 and achieving the required dimensions. Finally, the lower die punch 3 ejects the workpiece 8 from the female mold 2. The advantages of this invention are: 1. No raw material waste; all filling material is used to press the product, resulting in 100% material utilization; 2. High production efficiency; 5700 workpieces are produced in 8 hours; 3. High energy efficiency; all energy consumed in processing is ultimately used to form the workpiece, with no waste.

[0025] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A near-net shaped workpiece powder compaction die, characterized by, The device comprises an upper die, a female die and a lower die arranged in sequence from top to bottom, a mounting groove is vertically formed on the female die, a support plate is horizontally arranged on the inner wall of the bottom of the mounting groove, a through groove is vertically formed on the support plate, a combined die matched with the mounting groove is arranged on the support plate, a cavity is vertically formed on the combined die, the upper die is downwardly matched and inserted into the cavity, the lower die is inserted into the cavity through the through groove of the support plate and upwardly matched, and the raw material for forming the workpiece is placed between the upper die and the lower die in the cavity.

2. A powder pressing die for near-net shape workpieces according to claim 1, characterized in that The cross section of the workpiece is U-shaped, the cavity is arranged corresponding to the workpiece, and the cross section of the cavity is also U-shaped.

3. A powder pressing die for near-net shape workpieces according to claim 1 or 2, characterized in that The lower end of the upper die is arranged corresponding to the inner wall of the cavity, and the upper end of the lower die is arranged corresponding to the inner wall of the cavity.

4. A powder pressing die for near-net shape workpieces according to claim 1 or 2, characterized in that The combined die is flush with the upper part of the female die, the outer periphery of the combined die is arranged corresponding to the inner wall of the mounting groove, and the vertical downward projection area of the combined die is greater than the vertical downward projection area of the support plate.

5. A powder compacting die for near-net shape workpieces according to claim 1 or 2, characterized in that The upper end of the lower die is spaced apart from the inner wall of the through groove.

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