Compressor valve plate forming device for powder metallurgy and forming method thereof

Abstract

The invention relates to the technical field of powder metallurgy forming, and discloses a compressor valve plate forming device for powder metallurgy and a forming method thereof.The forming device comprises a lower die body, a guide support is fixed to the lower die body, an upper die body is slidably connected to the guide support, and a servo hydraulic cylinder is fixed to the top of the guide support; a servo hydraulic cylinder is arranged on the lower die body, the telescopic end of the servo hydraulic cylinder is fixedly connected with the upper die body, a forming groove is formed in the lower die body, a forming head is arranged on the upper die body, a feeding box is arranged on the lower die body, and a push rod assembly used for adjusting the working position of the feeding box is fixed to one end of the lower die body. The metal powder can be uniformly distributed in the forming groove, so that the thickness of a formed workpiece is uniform, a lubricant can be conveniently and quantitatively sprayed into the metal powder, the flowing property of the metal powder is improved, and the machining quality of the workpiece is improved.

Description

Technical Field

[0001] The invention relates to the technical field of powder metallurgy forming, in particular to a compressor valve plate forming device for powder metallurgy and a forming method thereof. Background Art

[0002] Powder metallurgy molding is the process of forming loose powders of metal, ceramic or other materials into semi-finished products with predetermined geometric shapes, sizes, density and strength in a mold through pressure, and then demolding to obtain semi-finished blanks. This process is one of the basic processes in powder metallurgy production, and its purpose is not limited to making semi-finished products, but to eventually obtain finished products. The semi-finished products after molding need to undergo at least a subsequent sintering process to become finished products. Powder metallurgy molding technology uses a mixture of metal powder and compound powder as raw materials, and through molding and sintering operations, it is a processing method for producing metal materials and their composite materials. The broad powder metallurgy products industry covers iron and stone tools, cemented carbide, magnetic materials and powder metallurgy products.

[0003] At present, during the molding process of compressor valve plates, due to the large molding area of ​​the compressor valve plates, when the molded powder fills the molding groove of the mold, the poor fluidity of the powder will lead to uneven filling, resulting in uneven thickness of the compressor valve plates after molding, which will affect the pressing quality of the compressor valve plates. Summary of the invention

[0004] The present invention provides a compressor valve plate forming device and a forming method for powder metallurgy, which have the beneficial effect of evenly distributing metal powder in a forming groove, so that the thickness of the workpiece after forming is relatively uniform, thereby improving the processing quality of the workpiece. It solves the problem mentioned in the above background technology that when the formed powder fills the forming groove of the mold, the poor fluidity of the powder will lead to uneven filling, resulting in uneven thickness of the compressor valve plate after forming, which will affect the pressing quality of the compressor valve plate.

[0005] The present invention provides the following technical solution: a compressor valve plate forming device for powder metallurgy, comprising a lower mold body, a guide bracket is fixed on the lower mold body, an upper mold body is slidably connected to the guide bracket, a servo hydraulic cylinder is fixed on the top of the guide bracket, the telescopic end of the servo hydraulic cylinder is fixedly connected to the upper mold body, a forming groove is opened on the lower mold body, a forming head is provided on the upper mold body, a loading box is provided on the lower mold body, and a push rod assembly for adjusting the working position of the loading box is fixed to one end of the lower mold body;

[0006] A conical material guide plate is fixed in the material loading box, and a plurality of equally spaced material guide slots are provided on the conical material guide plate. A cylinder is provided below the conical material guide plate, and a plurality of circumferentially equally spaced material distribution seats are fixed on the cylinder, and a plurality of equally spaced material discharge holes are provided on the material distribution seat. A sleeve is rotatably connected to the conical material guide plate below, and a plurality of scrapers are fixed on the sleeve. A servo motor is provided in the cylinder, and a motor shaft of the servo motor is fixed in the sleeve.

[0007] As an optional scheme of the compressor valve plate forming device for powder metallurgy described in the present invention, wherein: the push rod assembly includes a mounting bracket, the mounting bracket is fixed on the lower mold body, an electric push rod is fixed on the mounting bracket, the telescopic end of the electric push rod is fixedly connected to the loading box, guide ear blocks are provided on both sides of the mounting bracket, a guide rod is slidably connected to the guide ear block, and one end of the guide rod is fixed to the loading box.

[0008] As an optional solution of the compressor valve plate forming device for powder metallurgy described in the present invention, a cover plate is fixed on the top of the feeding box, a powder conveying pipe is fixed on the cover plate, an annular block is fixed in the cylinder, and the annular block is elastically connected to the servo motor through a torsion spring.

[0009] As an optional solution of the compressor valve plate forming device for powder metallurgy of the present invention, a sealing plate is arranged in the material distribution seat, one end of the sealing plate is slidably connected to the cylinder, and a plurality of first through holes distributed equally are opened on the sealing plate.

[0010] As an optional solution of the valve plate forming device for a compressor for powder metallurgy according to the present invention, a first resistance rod is fixed at one end of the sealing plate, the first resistance rod is elastically connected to the cylinder through a first spring, and a plurality of first resistance blocks are fixed on the circumferential surface of the servo motor.

[0011] As an optional solution of the compressor valve plate forming device for powder metallurgy described in the present invention, wherein: a second resistance rod is slidably connected to the loading box, a second resistance block is fixed to one end of the second resistance rod, the second resistance block is elastically connected to the loading box through a second spring, the second spring is sleeved on the second resistance rod, and a limiting block is fixed on one side of the lower mold.

[0012] As an optional scheme of the compressor valve plate forming device for powder metallurgy described in the present invention, wherein: a cavity is arranged in the scraper, lubricating oil flow channels are provided on the conical guide plate and the cylinder, the cavity is connected with one end of the lubricating oil flow channel, a lubricating oil pipe is fixed on the conical guide plate, the lubricating oil pipe is connected with the other end of the lubricating oil flow channel, and a plurality of equidistantly distributed oil injection holes are provided on the scraper.

[0013] As an optional scheme of the compressor valve plate forming device for powder metallurgy described in the present invention, a sealing strip is arranged in the cavity, a plurality of second through holes are opened on the sealing strip, a third resistance rod is fixed to one end of the sealing strip, the third resistance rod is elastically connected to the scraper through a third spring, and a third resistance block is fixed on the material distribution seat.

[0014] As an optional solution of the compressor valve plate forming device for powder metallurgy of the present invention, wherein: the material distribution seat is rotatably connected with a rotating shaft, a plurality of stirring blades are fixed on the rotating shaft, and a gear is fixed at one end of the rotating shaft, and an annular gear ring is fixed on the feeding box, and the gear and the annular gear ring are meshed with each other.

[0015] The method for forming a compressor valve plate for powder metallurgy comprises the following specific steps:

[0016] Mixing: According to the requirements of the product, metal powders of different proportions are mixed evenly by wet or dry methods to make blank powder;

[0017] Loading: The feeding box is pushed horizontally by the push rod assembly, gradually approaching the specific forming groove of the lower die. At the same time, the mixed metal powder flows to the feeding box through the powder conveying pipe in the forming device, and is distributed through several distribution seats;

[0018] Scraping: The servo motor in the forming device drives several scrapers to rotate, which can scrape the metal powder in the material distribution seat evenly;

[0019] Add lubricant: connect the lubricating oil pipe through the oil supply device to inject the lubricant from the lubricating oil flow channel into the cavity inside the scraper, and spray the lubricant into the metal powder in a quantitative manner when the scraper rotates;

[0020] Mixing and unloading: The loading box moves to the top of the molding groove, restricts the rotation of the scraper, and the servo motor rotates, which can drive the distribution seat to rotate. The distribution seat drives the mixing blades to rotate during the rotation, and the metal powder and lubricant are evenly mixed. At the same time, during the rotation of the distribution seat, the first resistance block opens the sealing plate to unload the material. The rotating servo motor drives the distribution seat to rotate synchronously, and the metal powder is evenly distributed in the molding groove;

[0021] Molding: The L push rod assembly drives the loading box away from the molding groove, and the servo hydraulic cylinder drives the specific molding head of the upper mold to move, pressurizing the evenly distributed metal powder in the molding groove to form the required shape;

[0022] Sintering: The pressed workpiece is taken out and placed in a heating device for sintering to form grain boundary bonding between metal powders, thereby obtaining the required physical and mechanical properties.

[0023] The present invention has the following beneficial effects:

[0024] 1. In the compressor valve plate forming device for powder metallurgy, the feed box is pushed to move horizontally by the push rod assembly and gradually approaches the specific forming groove of the lower die. The metal powder can be transported to the feed box through the powder conveying pipe arranged on the cover plate. The conical guide plate fixed in the feed box and the several guide slots opened on the conical guide plate can conveniently distribute the metal powder to several material distribution seats. The servo motor arranged in the cylinder can drive the sleeve and the several scrapers fixed on the sleeve to rotate, so that the scrapers can evenly scrape the metal powder in the material distribution seat, so as to achieve the purpose of evenly distributing the metal powder in the material distribution seat and avoid the phenomenon of less or more metal powder in several material distribution seats. The sealing plate arranged in the material distribution seat can be used in the process of material distribution. The purpose of sealing the feeding hole is achieved in the process to prevent metal powder from falling into the forming groove during the material distribution process and affecting the forming quality of the workpiece. When the loading box is located directly above the forming groove, the limiting structure composed of the second resistance rod, the second resistance block and the limit block can limit the scraper after the scraper is scraped flat. The servo motor first rotates relative to the feeding seat, so that the first resistance block fixed on the servo motor body can be deflected slightly and then resist the first resistance rod fixed on the sealing plate, which can prompt the sealing plate to move, so that the misaligned first through hole and the feeding hole overlap, and then the servo motor body rotates synchronously with the feeding seat, which can evenly distribute the metal powder in the forming groove, so that the thickness of the workpiece after forming is more uniform, thereby improving the processing quality of the workpiece.

[0025] 2. In the compressor valve plate forming device for powder metallurgy, the lubricant used to improve the flowability of metal powder can flow into the cavity in the scraper through the cooperation of the lubricating oil pipe, the lubricating oil flow channel and the cavity in the scraper. The sealing strip arranged in the cavity can achieve the purpose of sealing a plurality of equidistantly distributed oil injection holes opened at the bottom of the scraper, thereby avoiding direct flow into the distributor seat and contact with the metal powder. When the scraper is driven to rotate by the motor shaft of the servo motor, the third resistance rod fixed at one end of the sealing strip can be brought into contact with the third resistance block fixed on the distributor seat, thereby causing the sealing strip to move horizontally on the scraper, so that the dislocated oil injection holes can communicate with the second through hole, thereby facilitating the quantitative spraying of lubricant into the metal powder, thereby avoiding the problem of excessive spraying of lubricant affecting the forming quality of the workpiece.

[0026] 3. In the compressor valve plate forming device for powder metallurgy, the rotating shaft connected to the distribution seat can be connected to a plurality of stirring blades, so that the metal powder and lubricant in the distribution seat can be evenly stirred, and the metal powder and the lubricant are fully contacted. When the gear fixed on the rotating shaft is engaged with the annular gear ring fixed on the feeding box, when the servo motor drives the distribution seat to rotate for feeding, the gear can automatically drive the rotating shaft to rotate to stir the metal powder and the lubricant, which greatly improves the effect of the metal powder being able to fully contact with the lubricant during the feeding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0028] Figure 2 It is a structural cross-sectional view of the present invention.

[0029] Figure 3 This is one of the three-dimensional structural schematic diagrams of the loading box of the present invention.

[0030] Figure 4 This is the second schematic diagram of the three-dimensional structure of the loading box of the present invention.

[0031] Figure 5 It is a cross-sectional view of the feeding structure of the present invention.

[0032] Figure 6 for Figure 3 A partial enlarged view of point A in the middle.

[0033] Figure 7 for Figure 5 A partial enlarged view of point B in the middle.

[0034] Figure 8 for Figure 5 A partial enlarged view of point C in the middle.

[0035] Fig. 9 The figure is a flowchart of the compressor valve plate forming method of the present invention.

[0036] In the figure: 1, lower mold body; 2, guide bracket; 3, upper mold body; 4, servo hydraulic cylinder; 5, molding groove; 6, molding head; 7, loading box; 71, mounting bracket; 72, electric push rod; 73, guide ear block; 74, guide rod; 8, conical guide plate; 9, guide slot; 10, material distribution seat; 11, cylinder; 12, material discharge hole; 13, cover plate; 14, powder conveying pipe; 15, sleeve; 16, servo motor; 17, scraper; 18, ring block; 19, torsion spring; 20, sealing Orifice plate; 21. first through hole; 22. first resistance rod; 23. first spring; 24. first resistance block; 25. second resistance rod; 26. second resistance block; 27. second spring; 28. limit block; 29. ​​cavity; 30. lubricating oil flow channel; 31. lubricating oil pipe; 32. oil injection hole; 33. sealing strip; 34. second through hole; 35. third resistance rod; 36. third spring; 37. third resistance block; 38. rotating shaft; 39. stirring blade; 40. gear; 41. annular gear ring. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] For example, see Figure 1-Figure 9 A compressor valve plate forming device for powder metallurgy comprises a lower mold body 1, a guide bracket 2 is fixed on the lower mold body 1, an upper mold body 3 is slidably connected to the guide bracket 2, a servo hydraulic cylinder 4 is fixed on the top of the guide bracket 2, the telescopic end of the servo hydraulic cylinder 4 is fixedly connected to the upper mold body 3, a forming groove 5 is provided on the lower mold body 1, a forming head 6 is provided on the upper mold body 3, a loading box 7 is provided on the lower mold body 1, and a push rod assembly for adjusting the working position of the loading box 7 is fixed at one end of the lower mold body 1;

[0039] A conical material guide plate 8 is fixed in the loading box 7, and a plurality of equally spaced material guide slots 9 are provided on the conical material guide plate 8. A cylinder 11 is provided below the conical material guide plate 8, and a plurality of circumferentially equally spaced material distribution seats 10 are fixed on the cylinder 11. The material distribution seat 10 is provided with a plurality of equally spaced material discharge holes 12. A sleeve 15 is rotatably connected to the conical material guide plate 8 below, and a plurality of scrapers 17 are fixed on the sleeve 15. A servo motor 16 is provided in the cylinder 11, and the motor shaft of the servo motor 16 is fixed in the sleeve 15.

[0040] The push rod assembly includes a mounting bracket 71, which is fixed on the lower mold body 1. An electric push rod 72 is fixed on the mounting bracket 71. The telescopic end of the electric push rod 72 is fixedly connected to the loading box 7. Guide ear blocks 73 are provided on both sides of the mounting bracket 71. A guide rod 74 is slidably connected to the guide ear block 73, and one end of the guide rod 74 is fixed on the loading box 7.

[0041] A cover plate 13 is fixed on the top of the loading box 7 , a powder conveying pipe 14 is fixed on the cover plate 13 , an annular block 18 is fixed in the cylinder 11 , and the annular block 18 is elastically connected to the servo motor 16 via a torsion spring 19 .

[0042] A sealing plate 20 is disposed in the material distributing seat 10 , one end of the sealing plate 20 is slidably connected to the cylinder 11 , and a plurality of first through holes 21 equidistantly distributed are formed on the sealing plate 20 .

[0043] A first abutment rod 22 is fixed to one end of the sealing plate 20 . The first abutment rod 22 is elastically connected to the cylinder 11 via a first spring 23 . A plurality of first abutment blocks 24 are fixed to the circumferential surface of the servo motor 16 .

[0044] A second resistance rod 25 is slidably connected to the loading box 7, a second resistance block 26 is fixed to one end of the second resistance rod 25, the second resistance block 26 is elastically connected to the loading box 7 via a second spring 27, the second spring 27 is sleeved on the second resistance rod 25, and a limiting block 28 is fixed to one side of the lower mold body 1.

[0045] When loading, refer to Figure 1-Figure 7The electric push rod 72 fixed on the mounting bracket 71 of the push rod assembly pushes the loading box 7 to move horizontally, gradually approaching the molding groove 5 provided on the lower mold body 1, and the cooperation of the guide ear block 73 and the guide rod 74 can improve the stability of the horizontal movement of the loading box 7. At the same time, the powder conveying pipe 14 provided on the cover plate 13 can transport the metal powder into the loading box 7, and the conical guide plate 8 fixed in the loading box 7 and the several guide slots 9 provided on the conical guide plate 8 can conveniently distribute the metal powder into several material distribution seats 10, and pass through the cylinder 1 The servo motor 16 arranged in the sleeve 1 can drive the sleeve 15 and the plurality of scrapers 17 fixed on the sleeve 15 to rotate, and the metal powder distributed in the material distribution seat 10 can be scraped flat, so as to achieve the purpose of evenly distributing the metal powder inside the material distribution seat 10, and avoid the phenomenon that the amount of metal powder in the plurality of material distribution seats 10 is less or more. When the feeding box 7 is in the process of horizontal movement, the second contact rod 25 and the second contact block 26 can be driven to move horizontally synchronously, so that the second contact block 26 and the limit block 28 are in contact. At this time, the feeding box 7 The second spring 27 is located directly above the forming groove 5, so that the second resistance rod 25 moves horizontally in the feeding box 7, and the second spring 27 accumulates force to achieve the purpose of limiting the scraper 17. The servo motor 16 drives the scraper 17 to move. When the scraper 17 cannot rotate, the servo motor 16 rotates by itself, so that the body of the servo motor 16 rotates relatively within a certain angle range on the annular block 18 of the cylinder 11. The torsion spring 19 accumulates force, and the first resistance block 24 fixed on the body of the servo motor 16 can resist the first resistance rod 22 fixed on the sealing plate 20. The first spring 23 accumulates force, prompting the sealing plate 20 to move horizontally in the material distribution seat 10 so that the misaligned first through hole 21 and the discharge hole 12 overlap, and then the servo motor 16 body drives the material distribution seat 10 to rotate synchronously, which can evenly distribute the metal powder in the forming groove 5, so that the thickness of the workpiece after forming is more uniform, and the push rod assembly drives the loading box 7 to reset, and drives the upper mold body 3 to move vertically on the guide bracket 2 through the servo hydraulic cylinder 4, prompting the forming head 6 to pressurize the evenly distributed metal powder in the forming groove 5 to form the desired shape.

[0046] Embodiment 2: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1-Figure 9 A cavity 29 is provided in the scraper 17, and lubricating oil flow channels 30 are provided on the conical guide plate 8 and the cylinder 11. The cavity 29 is connected to one end of the lubricating oil flow channel 30. A lubricating oil pipe 31 is fixed on the conical guide plate 8, and the lubricating oil pipe 31 is connected to the other end of the lubricating oil flow channel 30. The scraper 17 is provided with a plurality of equidistantly distributed oil injection holes 32.

[0047] A sealing strip 33 is provided in the cavity 29 , and a plurality of second through holes 34 are formed on the sealing strip 33 . A third resistance rod 35 is fixed to one end of the sealing strip 33 , and the third resistance rod 35 is elastically connected to the scraper 17 via a third spring 36 . A third resistance block 37 is fixed to the material distribution seat 10 .

[0048] A rotating shaft 38 is rotatably connected to the material distributing seat 10 , and a plurality of stirring blades 39 are fixed to the rotating shaft 38 . A gear 40 is fixed to one end of the rotating shaft 38 , and an annular gear ring 41 is fixed to the material loading box 7 , and the gear 40 and the annular gear ring 41 are meshed with each other.

[0049] Due to the poor fluidity of the powder, it will lead to uneven filling and affect the pressing quality. The fluidity of the powder can be improved by improving the particle size distribution and morphology of the powder and adding an appropriate amount of lubricant. Figure 5-Figure 8 , through the cooperation of the lubricating oil pipe 31, the lubricating oil flow channel 30 and the cavity 29 in the scraper 17, the lubricant used to improve the flowability of the metal powder can flow into the cavity 29 in the scraper 17. When the scraper 17 rotates, the third contact rod 35 fixed at one end of the blocking strip 33 can be in contact with the third contact block 37 fixed on the material distribution seat 10, so that the blocking strip 33 moves horizontally on the scraper 17, and the third spring 36 accumulates force, so that the dislocated oil injection hole 32 and the second through hole 34 can be communicated, so that the lubricant can be quantitatively sprayed into the metal powder;

[0050] In actual production, if the lubricant is mixed evenly with the metal powder in advance, adhesion may occur, which makes it easy to block the metal powder when feeding, affecting the feeding speed. The lubricant may also volatilize in contact with the air, thus affecting the lubrication effect. It is necessary to stir the metal powder evenly when feeding it. Figure 3-Figure 5 When the material distribution seat 10 rotates, it can drive the gear 40 fixed on the rotating shaft 38 to move. Through the cooperation of the annular gear ring 41 fixed on the feeding box 7, the rotating shaft 38 drives a plurality of stirring blades 39 to evenly stir the metal powder and lubricant in the material distribution seat 10, which greatly improves the effect of the metal powder being able to fully contact with the lubricant during the feeding process.

[0051] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 1. For details, please refer to Figure 1-Figure 9 The method for forming a compressor valve plate for powder metallurgy comprises the following specific steps:

[0052] Mixing: According to the requirements of the product, metal powders of different proportions are mixed evenly by wet or dry methods to make blank powder;

[0053] Loading: The loading box 7 is pushed horizontally by the push rod assembly, gradually approaching the forming groove 5 of the lower mold body 1, and at the same time, the mixed metal powder flows to the loading box 7 through the powder conveying pipe 14 in the forming device, and is distributed through a plurality of distribution seats 10;

[0054] Scraping: The servo motor 16 in the forming device drives a plurality of scrapers 17 to rotate, so that the metal powder in the material distribution seat 10 can be scraped evenly;

[0055] Adding lubricant: Connecting the lubricating oil pipe 31 through the oil supply device to inject the lubricant from the lubricating oil flow channel 30 into the cavity 29 in the scraper 17, and spraying the lubricant into the metal powder in a quantitative manner when the scraper 17 rotates;

[0056] Stirring and unloading: the loading box 7 moves to the top of the molding groove 5, the limiting scraper 17 rotates, the servo motor 16 rotates, and can drive the material distribution seat 10 to rotate. When the material distribution seat 10 rotates, it drives the stirring blade 39 to rotate, and the metal powder and the lubricant are evenly mixed. At the same time, during the rotation of the material distribution seat 10, the first resistance block 24 is prompted to open the sealing plate 20 for unloading. The rotating servo motor 16 drives the material distribution seat 10 to rotate synchronously, and the metal powder is evenly distributed in the molding groove 5;

[0057] Molding: The L push rod assembly drives the loading box 7 away from the molding groove 5, and the servo hydraulic cylinder 4 drives the molding head 6 of the upper mold body 3 to move, and pressurizes the metal powder evenly distributed in the molding groove 5 to form the desired shape;

[0058] Sintering: The pressed workpiece is taken out and placed in a heating device for sintering to form grain boundary bonding between metal powders, thereby obtaining the required physical and mechanical properties.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A compressor valve plate forming device for powder metallurgy, comprising a lower die body (1), characterized in that: A guide bracket (2) is fixed on the lower mold body (1), an upper mold body (3) is slidably connected to the guide bracket (2), a servo hydraulic cylinder (4) is fixed on the top of the guide bracket (2), the telescopic end of the servo hydraulic cylinder (4) is fixedly connected to the upper mold body (3), a molding groove (5) is provided on the lower mold body (1), a molding head (6) is provided on the upper mold body (3), a loading box (7) is provided on the lower mold body (1), and a push rod assembly for adjusting the working position of the loading box (7) is fixed on one end of the lower mold body (1); A conical material guide disc (8) is fixed in the material loading box (7), and a plurality of material guide slots (9) are provided on the conical material guide disc (8) and are evenly spaced. A cylinder (11) is provided below the conical material guide disc (8), and a plurality of material distribution seats (10) are fixed on the cylinder (11) and are evenly spaced. A plurality of material discharge holes (12) are provided on the material distribution seat (10) and are evenly spaced. A sleeve (15) is rotatably connected below the conical material guide disc (8), and a plurality of scrapers (17) are fixed on the sleeve (15). A servo motor (16) is provided in the cylinder (11), and the motor shaft of the servo motor (16) is fixed in the sleeve (15).

2. The powder metallurgy compressor valve plate forming device according to claim 1, characterized in that: The push rod assembly comprises a mounting bracket (71), wherein the mounting bracket (71) is fixed on the lower mold body (1), an electric push rod (72) is fixed on the mounting bracket (71), the telescopic end of the electric push rod (72) is fixedly connected to the loading box (7), guide ear blocks (73) are arranged on both sides of the mounting bracket (71), a guide rod (74) is slidably connected to the guide ear block (73), and one end of the guide rod (74) is fixed to the loading box (7).

3. The powder metallurgy compressor valve plate forming device according to claim 2, characterized in that: A cover plate (13) is fixed on the top of the loading box (7), a powder conveying pipe (14) is fixed on the cover plate (13), an annular block (18) is fixed inside the cylinder (11), and the annular block (18) is elastically connected to the servo motor (16) via a torsion spring (19).

4. The compressor valve plate forming device for powder metallurgy according to claim 3, characterized in that: A sealing plate (20) is arranged in the material distribution seat (10), one end of the sealing plate (20) is slidably connected to the cylinder (11), and a plurality of first through holes (21) distributed at equal intervals are opened on the sealing plate (20).

5. The compressor valve plate forming device for powder metallurgy according to claim 4, characterized in that: A first abutment rod (22) is fixed to one end of the sealing plate (20), the first abutment rod (22) is elastically connected to the cylinder (11) via a first spring (23), and a plurality of first abutment blocks (24) are fixed on the circumferential surface of the servo motor (16).

6. The compressor valve plate forming device for powder metallurgy according to claim 5, characterized in that: A second resistance rod (25) is slidably connected to the loading box (7), a second resistance block (26) is fixed to one end of the second resistance rod (25), the second resistance block (26) is elastically connected to the loading box (7) via a second spring (27), the second spring (27) is sleeved on the second resistance rod (25), and a limiting block (28) is fixed to one side of the lower mold body (1).

7. The powder metallurgy compressor valve plate forming device according to claim 6, characterized in that: A cavity (29) is provided in the scraper (17); a lubricating oil flow channel (30) is provided on the conical material guide plate (8) and the cylinder (11); the cavity (29) is connected to one end of the lubricating oil flow channel (30); a lubricating oil pipe (31) is fixed on the conical material guide plate (8); the lubricating oil pipe (31) is connected to the other end of the lubricating oil flow channel (30); and a plurality of equidistantly distributed oil injection holes (32) are provided on the scraper (17).

8. The compressor valve plate forming device for powder metallurgy according to claim 7, characterized in that: A blocking strip (33) is arranged in the cavity (29), and a plurality of second through holes (34) are formed on the blocking strip (33). A third resistance rod (35) is fixed to one end of the blocking strip (33), and the third resistance rod (35) is elastically connected to the scraper (17) via a third spring (36). A third resistance block (37) is fixed to the material distribution seat (10).

9. The powder metallurgy compressor valve plate forming device according to claim 8, characterized in that: The material distributing seat (10) is rotatably connected with a rotating shaft (38), a plurality of stirring blades (39) are fixed on the rotating shaft (38), and a gear (40) is fixed to one end of the rotating shaft (38), and an annular gear ring (41) is fixed on the material loading box (7), and the gear (40) and the annular gear ring (41) are meshed with each other.

10. The method for forming a compressor valve plate for powder metallurgy according to claim 9, characterized in that: The specific steps include: Mixing: According to the requirements of the product, metal powders of different proportions are mixed evenly by wet or dry methods to make blank powder; Loading: The loading box (7) is pushed horizontally by the push rod assembly to gradually approach the forming groove (5) of the lower mold body (1). At the same time, the mixed metal powder flows to the loading box (7) through the powder conveying pipe (14) in the forming device and is distributed through a plurality of distribution seats (10); Scraping: The servo motor (16) in the forming device drives a plurality of scrapers (17) to rotate, so that the metal powder in the material distribution seat (10) can be scraped evenly; Adding lubricant: connecting the lubricant pipe (31) through the oil supply device to inject the lubricant from the lubricant flow channel (30) into the cavity (29) in the scraper (17), and spraying the lubricant into the metal powder in a quantitative manner when the scraper (17) rotates; Stirring and unloading: the loading box (7) moves to the top of the molding groove (5), the limiting scraper (17) rotates, and the servo motor (16) rotates, which can drive the material distribution seat (10) to rotate. When the material distribution seat (10) rotates, it drives the stirring blade (39) to rotate, so that the metal powder and the lubricant are evenly stirred. At the same time, during the rotation of the material distribution seat (10), the first resistance block (24) is prompted to open the sealing plate (20) to unload the material. The rotating servo motor (16) drives the material distribution seat (10) to rotate synchronously, and the metal powder is evenly distributed in the molding groove (5); Molding: The L push rod assembly drives the loading box (7) away from the molding groove (5), and the servo hydraulic cylinder (4) drives the molding head (6) of the upper mold body (3) to move, and pressurizes the metal powder evenly distributed in the molding groove (5) to form the desired shape; Sintering: The pressed workpiece is taken out and placed in a heating device for sintering to form grain boundary bonding between metal powders, thereby obtaining the required physical and mechanical properties.

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