A molding device for alloy powder casting

Abstract

The present invention discloses a molding device for alloy powder casting, which relates to the technical field of casting equipment. The key points of its technical solution are: it comprises a pedestal, a bottom mold arranged on the pedestal, a top plate connected by multiple groups of support rods on both sides of the pedestal, and a top mold driven by a hydraulic cylinder arranged on the top plate for molding; the molding device for alloy powder in the present invention realizes multiple molding areas by cooperating with the bottom mold with an outer circle and inner polygonal structure and the top mold with a polygonal solid structure, and can also replace the multiple molding areas by rotation. At the same time, the top mold and the bottom mold are in the reversal of transmission and in cooperation with the speed change mechanism, so that the top mold can be adaptively adjusted following the adjustment of the bottom mold, effectively realizing the matching and correspondence of the adjustment between the mold bodies, and realizing rapid replacement between the mold bodies when facing damage, deformation and molding of different parts of the mold body, thereby avoiding the cumbersome process of disassembly and assembly and the problem of delaying the casting process during the disassembly and assembly process.

Description

Technical Field

[0001] The present invention relates to the technical field of casting equipment, and more particularly to a die pressing device for alloy powder casting. Background Art

[0002] Alloy powder casting is a manufacturing process that processes metal alloys in powder form into castings. It uses metal powder as raw material and forms the parts through cold pressing, sintering, hot forging, hot isostatic pressing, isothermal die forging, or directly hot isostatic pressing and subsequent processing to produce precision forgings of the desired shape. This new process combines traditional powder metallurgy with precision die forging. It can produce powder forgings with a density close to the theoretical density of the material, improving the physical and mechanical properties of powder forgings.

[0003] The die pressing in alloy powder casting is a cold pressing process of alloy powder. The alloy powder is filled into the pre-molded bottom die, and the top die is driven by a hydraulic cylinder to extrude the alloy powder under pressure.

[0004] The cold pressing device for alloy powder includes a top mold driven by a hydraulic cylinder and a bottom mold filled with alloy powder and cooperated with the top mold for shaping. The top mold and the bottom mold are both installed on the corresponding mold frame and mold base. The existing mold body structure is relatively limited. Because it is in the form of cold pressing, the force generated by the hydraulic cylinder is relatively large. Long-term influence of force or influence of alloy powder (hardness, particle size) will inevitably cause slight deformation or damage. At the same time, when shaping different parts, the corresponding mold needs to be replaced. In the face of the above two situations, the upper and lower mold bodies need to be disassembled and assembled accordingly. The process is cumbersome. At the same time, during the replacement process, on the one hand, it is time-consuming and labor-intensive, and on the other hand, it delays the casting process.

[0005] Therefore, in order to solve the above technical problems, the present application proposes a molding device for alloy powder casting. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the present invention aims to provide a molding device for alloy powder casting.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a molding device for alloy powder casting, comprising a pedestal, a bottom mold arranged on the pedestal, a top plate connected by multiple groups of support rods on both sides of the pedestal, and a top mold driven by a hydraulic cylinder arranged on the top plate for molding; wherein, the bottom mold comprises a mold body a with a circular structure, fixed to a fixed seat on the pedestal and rotatably connected to the fixed seat, the mold body a is engaged and driven by a transmission component arranged inside the pedestal, a polygonal slot is provided on the mold body a, and mold grooves for filling alloy powder are respectively provided at the centers of multiple inner end faces of the polygonal slots, and the bottoms of the multiple mold grooves are provided with a bottom plate and an elastic member elastically connected to the bottom plate, and cooperate with the cylinder arranged inside the pedestal to eject the molded part; the top mold is located in the slot of the mold body a, and is connected to the mold body a. The slots have the same shape. The top mold includes a mold body b. A molding module corresponding to the mold groove is provided at the center of the outer end surface of the mold body b and is used for molding the alloy powder. Connecting frames connected to the telescopic ends of the hydraulic cylinder are provided on both sides of the top mold. The connecting frames are rotatably connected to the top mold, and a transmission adjustment box c for controlling the rotation of the top mold is provided on one side of the connecting frame; a transmission adjustment box a for transmission through a transmission assembly is provided on one side of the pedestal, and a gearbox is provided on the top of the top plate, and transmission adjustment boxes b corresponding to the transmission adjustment box a and the transmission adjustment box c are respectively provided on both sides of the gearbox. The transmission adjustment box b corresponding to the position of the transmission adjustment box c transmits the transmission adjustment box c through an adjusting shaft that adapts to the longitudinal movement of the top mold, and the transmission adjustment box b corresponding to the position of the transmission adjustment box a transmits the transmission adjustment box a through the shaft.

[0008] Preferably, an arc-shaped groove matching the fixed seat is provided on the top of the pedestal, transmission ports are provided on both sides of one end of the arc-shaped groove, a circular hole a through which the telescopic end of the cylinder passes is provided at the center of the arc-shaped groove, and a motor for transmitting the transmission assembly is provided on the side wall of the pedestal.

[0009] Preferably, the transmission assembly includes a conical gear group a and transmission teeth for linear transmission via a shaft connected to the transmission end of the motor. Two groups of transmission teeth are provided, and the two groups of transmission teeth engage and drive the mold body a through the transmission port.

[0010] Preferably, a conical gear group b is provided inside the transmission adjustment box a, a conical gear group c and a conical gear group d are respectively provided inside the two groups of transmission adjustment boxes b, and a conical gear group f is provided inside the transmission adjustment box c. The conical gear group a, the conical gear group b, the conical gear group c, the conical gear group d and the conical gear group f are all composed of two groups of radially meshing gears, which are used to convert the transmission direction, and the gearbox is used to adjust the transmission speed.

[0011] Preferably, the adjusting shaft includes a rod sleeve a and a transmission rod; the rod sleeve a is provided with a mounting seat connected to the bottom surface of the top plate, the rod sleeve a is provided with a rod sleeve b rotatably connected to the rod sleeve a, one end of the rod sleeve b is provided with a connecting end a, and the inner wall of the rod sleeve b is provided with a tooth groove b in a circumferential manner; the transmission rod is provided with a tooth body matching the tooth groove b, the transmission rod is embedded in the interior of the rod sleeve b through the tooth body, and one end of the transmission rod is provided with a connecting end b.

[0012] Preferably, the bottom of the fixing seat is provided with an arc-shaped hole groove, and the circular outer end surface of the mold body a is provided with tooth grooves a on both sides for engaging with the two groups of transmission teeth, and multiple groups of circular holes b corresponding to the center positions of multiple mold grooves are provided between the two groups of tooth grooves a.

[0013] Preferably, a circular groove with a diameter smaller than the mold groove is opened at the center of the bottom of the plurality of mold grooves, and the center of the circular groove is connected to the circular hole b. The elastic member is arranged in the circular groove, and the elastic member includes a circular plate a connected to the bottom plate, a circular plate b fixed on the bottom surface of the circular groove, a spring arranged between the circular plate a and the circular plate b, and a top rod connected to the circular plate a and extending through the circular plate b to the inside of the circular hole b.

[0014] Preferably, the plurality of mold grooves are different from each other, the bottom plate matches the mold groove, and the circular grooves and elastic members in the plurality of mold grooves are the same.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The alloy powder molding device of the present invention adopts the bottom mold design with an outer circle and an inner polygonal structure. On the one hand, multiple molding areas can be set through the polygonal structure, and on the other hand, multiple molding areas can be replaced by circular rotation. At the same time, when the bottom mold is replaced, the top mold can be adaptively adjusted following the adjustment of the bottom mold through the combination of the transmission reversing mechanism and the speed change mechanism, effectively realizing the matching and correspondence of the adjustment between the mold bodies. While changing the traditional mold structure, this molding device realizes rapid replacement between mold bodies when facing mold damage, deformation and molding of different parts, and also realizes integrated control of the top mold and the bottom mold, avoiding the cumbersome process of disassembly and assembly and the problem of delaying the casting process during disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is the overall structural diagram of the molding device in the present invention;

[0019] Figure 2 This is an external structural diagram of the pedestal in the present invention;

[0020] Figure 3 This is the overall structural diagram of the bottom mold of the present invention;

[0021] Figure 4 The overall partial view of the bottom mold of the present invention;

[0022] Figure 5 A disassembled diagram of the bottom mold of the present invention;

[0023] Figure 6 is a structural diagram of the motif a in the present invention;

[0024] Figure 7 It is a structural diagram of the fixing seat in the present invention;

[0025] Figure 8 It is a structural diagram of the die groove in the present invention;

[0026] Figure 9 is a structural diagram of the elastic member in the present invention;

[0027] Figure 10 This is a connection diagram between the top mold and the hydraulic cylinder in the present invention;

[0028] Figure 11 This is a diagram of the overall transmission connection between the top mold and the bottom mold in the present invention;

[0029] Figure 12 For the present invention Figure 11 A magnified view of point A;

[0030] Figure 13 It is a structural diagram of the transmission assembly in the present invention;

[0031] Figure 14 For the present invention Figure 11 Enlarged view of point B;

[0032] Figure 15 This is a structural diagram of the adjusting shaft in the present invention;

[0033] Figure 16 For the present invention Figure 15 Enlarged view of point C.

[0034] 1. Base; 101. Motor; 102. Transmission adjustment box a; 103. Arc groove; 104. Circular hole a; 105. Transmission port;

[0035] 2. Bottom mold;

[0036] 3. Top plate; 301. Hydraulic cylinder; 302. Gearbox; 303. Transmission adjustment box b;

[0037] 4. Top mold; 401. Mold body b; 402. Shaping module;

[0038] 5. Fixed seat; 501. Hole slot;

[0039] 6. Mold body a; 601. Mold groove; 602. Bottom plate; 603. Tooth groove a; 604. Circular hole b; 605. Circular groove;

[0040] 7. Elastic member; 701. Circular plate a; 702. Circular plate b; 703. Ejector rod; 704. Spring;

[0041] 8. Connecting frame; 801. Transmission adjustment box c; 802. Conical gear set f;

[0042] 9. Transmission assembly; 901. Conical gear group a; 902. Transmission gear;

[0043] 10. Cylinder;

[0044] 11. Adjusting shaft; 1101. Rod sleeve a; 1102. Transmission rod; 1103. Mounting seat; 1104. Rod sleeve b; 1105. Connecting end a; 1106. Connecting end b;

[0045] 12. Conical gear group b;

[0046] 13. Conical tooth group c;

[0047] 14. Conical gear set d. DETAILED DESCRIPTION

[0048] like Figure 1-16 As shown, the present invention provides a molding device for alloy powder casting, comprising a pedestal 1, a bottom mold 2 disposed on the pedestal 1, a top plate 3 connected by multiple groups of support rods on both sides of the pedestal 1, and a top mold 4 driven by a hydraulic cylinder 301 disposed on the top plate 3 for molding;

[0049] The bottom mold 2 includes a circular structure, a fixed base 5 fixed on the pedestal 1, and a mold body a6 rotatably connected to the fixed base 5. The mold body a6 is engaged and driven by a transmission assembly 9 provided inside the pedestal 1. A polygonal slot is provided on the mold body a6, and mold grooves 601 for filling alloy powder are respectively provided at the centers of multiple inner end faces of the polygonal slots. The bottoms of the multiple mold grooves 601 are all provided with a bottom plate 602 and an elastic member 7 elastically connected to the bottom plate 602, and cooperating with the cylinder 10 provided inside the pedestal 1 to eject the molded plastic part.

[0050] Further explanation, such as Figure 1As shown, the molding of the alloy powder is adjustable, specifically through a circular fixed seat 5 and a mold body a6 disposed in the fixed seat 5 and running in a circular manner, to achieve molding of different shapes of the alloy powder. At the same time, based on the corresponding exchange method between the top mold 4 and the bottom mold 2, the correspondence between the mold bodies is ensured during each molding exchange.

[0051] In order to realize the exchange between different molded shapes, such as Figure 1 、 Figure 3 、 Figure 4 and Figure 5 As shown, the fixing seat 5 is annular in structure, and the annular wall portion adopts an embedded structure, which can wrap the mold body a6 as a whole. Figure 6 and Figure 7 As shown, circular limiting ring buckles are provided on both sides of the circular outer end surface of the mold body a6, and are engaged with the annular limiting grooves on both sides of the embedded part of the ring wall of the fixing seat 5, thereby realizing the independent rotation of the mold body a6 inside the fixing seat 5;

[0052] At the same time, in order to realize the replacement mode of circular rotation, multiple different models are replaced, such as Figure 2 、 Figure 3 and Figure 6 As shown, according to the longitudinal molding method, it is only necessary to ensure that the molding surface of the mold body a6 and the top mold 4 are in a vertical state, that is, the molding surface of the mold body a6 is in a horizontal state. Therefore, the slots opened on the mold body a6 need to be designed in a polygonal manner, and a regular polygonal structure is the best. Since the slots in this figure are only presented by regular pentagons, they are not limited to regular pentagonal deformation slot structures. It needs to be limited according to the size of the specific mold groove 601 and the type of molding;

[0053] The settings for the multiple mold cavities 601 include the following scenarios:

[0054] ① Molding only one type of parts / parts of the same type with different sizes, i.e., multiple mold cavities 601 of the same type and size / parts of the same type with different sizes;

[0055] In this scenario, if multiple mold cavities 601 of the same type and size are damaged, they can be replaced immediately without affecting the processing process. Mold cavities 601 of the same type but different sizes can be exchanged for different molded shapes of the same type.

[0056] ② Molding of various parts of different types, including parts of different sizes within each type;

[0057] In this scenario, it is possible to exchange molded parts of the same or different sizes under different types;

[0058] At the same time, you can also combine ① and ②. In this scenario, you can have all the effects of ① and ② mentioned above. At the same time, when combining ① and ②, the specific adaptive setting needs to be made according to the shape of the slot opening of the mold body a6;

[0059] In order to realize the driving of the phantom a6, Figure 2 、 Figure 6 、 Figure 7 and Figure 11 As shown, the top of the pedestal 1 is provided with an arc-shaped groove 103 that matches the fixed base 5, and transmission ports 105 are provided on both sides of one end of the arc-shaped groove 103. A motor 101 for driving the transmission assembly 9 is provided on the side wall of the pedestal 1;

[0060] like Figure 11 、 Figure 12 and Figure 13 As shown, the transmission assembly 9 includes a conical gear set a901 and a transmission gear 902 for linear transmission via a shaft connected to the transmission end of the motor 101. There are two sets of transmission gears 902, and the two sets of transmission gears 902 engage and drive the mold body a6 through the transmission port 105.

[0061] At the same time, the circular outer end surface of the mold body a6 is provided with tooth grooves a603 on both sides for engaging with the two sets of transmission teeth 902, and the bottom of the fixing seat 5 is provided with an arc-shaped hole groove 501;

[0062] To further illustrate, the conical gear set a901 and the transmission gear 902 are both driven by the motor 101 through the shaft, and the transmission gear 902 is engaged with the tooth groove a603 on the circular outer end surface of the mold body a6 through the transmission port 105. The motor 101 drives the shaft to drive the transmission gear 902, and the fixed seat 5 is in a detachable limited state or a fixed state in the arc groove 103;

[0063] In order to realize the ejection of the molded parts, Figure 2 、 Figure 8 、 Figure 9 and Figure 11 As shown, a circular hole a104 is provided at the center of the arcuate groove 103, through which the telescopic end of the cylinder 10 passes. Multiple groups of circular holes b604 corresponding to the center positions of the multiple die grooves 601 are provided between the two groups of tooth grooves a603. At the same time, a circular groove 605 with a diameter smaller than that of the die groove 601 is provided at the center of the bottom of the multiple die grooves 601. The center of the circular groove 605 is connected to the circular hole b604. The elastic member 7 is provided in the circular groove 605. The bottom plate 602 provided inside the die groove 601 forms a molding cavity with the die groove 601. After the alloy powder is molded, the elastic member 7 is driven by the cylinder 10 to eject it.

[0064] like Figure 8 and Figure 9As shown, the elastic member 7 includes a circular plate a701 connected to the bottom plate 602, a circular plate b702 fixed to the bottom surface of the circular groove 605, a spring 704 provided between the circular plates a701 and b702, and a top rod 703 connected to the circular plate a701 and extending through the circular plate b702 to the inside of the circular hole b604;

[0065] The cylinder 10 drives the elastic member 7 disposed in the circular groove 605 on the bottom surface of the die groove 601. The elastic member 7 drives the bottom plate 602 so that the molded part of the alloy powder is pushed out to the notch of the die groove 601. The elastic member 7 uses its own elasticity to cooperate with the contraction of the cylinder 10 to reset.

[0066] It should be noted that the circular grooves 605 and the elastic members 7 in the multiple mold grooves 601 are all the same;

[0067] The top die 4 is located in the slot of the die body a6 and has the same shape as the slot of the die body a6. The top die 4 includes a die body b401. A molding module 402 corresponding to the die slot 601 and used for molding the alloy powder is provided at the center of the outer end surface of the die body b401. Connecting frames 8 connected to the telescopic ends of the hydraulic cylinder 301 are provided on both sides of the top die 4. The connecting frames 8 are rotatably connected to the top die 4, and a transmission adjustment box c801 for controlling the rotation of the top die 4 is provided on one side of the connecting frames 8.

[0068] To further illustrate, the top mold 4 has the same polygonal slot shape as the bottom mold 2 and is a solid body. A gap needs to be created between it and the die groove 601 on the polygonal inner end surface of the bottom mold 2 to facilitate loading and unloading, that is, filling the die groove 601 with alloy powder and moving the molded part ejected after molding. Therefore, the size of the top mold 4 needs to be adaptively set according to the actual gap size.

[0069] At the same time, in order to achieve the adaptability and matching of the molding between the top mold 4 and the bottom mold 2, as shown in FIG. Figure 6 and Figure 11 As shown, the plurality of molding modules 402 on the top mold 4 and the mold cavity 601 on the bottom mold 2 need to meet two conditions: first, they must be arranged in the same order; second, according to the order, the rotation speed of the top mold 4 and the bottom mold 2 must be adapted. That is, after the position of the mold cavity 601 of the bottom mold 2 is determined, the corresponding molding module 402 on the top mold 4 must also be aligned with it;

[0070] In order to prevent the longitudinal movement of the top mold 4 from affecting the transmission during the molding process, the top mold 4 can realize the exchange between multiple molding modules 402 during the reset process. Therefore, the transmission reversing component, the speed change component and the transmission telescopic component need to cooperate with each other, such as Figure 11 、 Figure 12 、 Figure 14 、 Figure 15 and Figure 16As shown, a transmission adjustment box a102 for transmission through a transmission assembly 9 is provided on one side of the pedestal 1, and a gearbox 302 is provided on the top of the top plate 3. Transmission adjustment boxes b303 corresponding to the transmission adjustment box a102 and the transmission adjustment box c801 are respectively provided on both sides of the gearbox 302. The transmission adjustment box b303 corresponding to the position of the transmission adjustment box c801 transmits the transmission adjustment box c801 through the adjustment shaft 11 that adapts to the longitudinal movement of the top mold 4. The transmission adjustment box b303 corresponding to the position of the transmission adjustment box a102 transmits the transmission adjustment box a102 through the shaft.

[0071] Based on the above, the transmission adjustment box a102 is provided with a bevel gear set b12, and the two transmission adjustment boxes b303 are respectively provided with a bevel gear set c13 and a bevel gear set d14. The transmission adjustment box c801 is provided with a bevel gear set f802. The bevel gear set a901, the bevel gear set b12, the bevel gear set c13, the bevel gear set d14 and the bevel gear set f802 are all composed of two groups of radially meshing gears for converting the transmission direction. The gearbox 302 is used to adjust the transmission speed.

[0072] Furthermore, the first reversal is performed through the conical gear set a901, and the conical gear set b12 is transmitted in conjunction with the shaft. After the second reversal of the conical gear set b12, the conical gear set c13 in one of the two transmission adjustment boxes b303 is transmitted through the shaft to achieve three reversals. At this time, the conical gear set c13 will directly transmit to the gearbox 302 to achieve speed change, so that the transmission rate after speed change matches the rotation rate of the bottom mold 2, and is transmitted to the conical gear set d14 in the other transmission adjustment box b303. After the conical gear set d14 is reversed four times, and the conical gear set f802 in the transmission adjustment box c801 is transmitted by the adjusting shaft 11, finally, after the conical gear set f802 is reversed five times, the top mold 4 is controlled by the shaft.

[0073] like Figure 15 and Figure 16 As shown, the above-mentioned adjusting shaft rod 11 includes a rod sleeve a1101 and a transmission rod 1102;

[0074] The rod sleeve a1101 is provided with a mounting seat 1103 connected to the bottom surface of the top plate 3, and a rod sleeve b1104 is provided inside the rod sleeve a1101 to be rotatably connected to the rod sleeve a1101. A connecting end a1105 is provided at one end of the rod sleeve b1104, and a tooth groove b is provided on the inner wall of the rod sleeve b1104 along the circumference;

[0075] The transmission rod 1102 is provided with a tooth body that matches the tooth groove b. The transmission rod 1102 is embedded in the rod sleeve b1104 through the tooth body. One end of the transmission rod 1102 is provided with a connecting end b1106.

[0076] Specifically, the rod sleeve a1101 is fixed to the bottom of the top plate 3 by the mounting seat 1103. As the hydraulic cylinder 301 drives the top mold 4 to move, the connection position of the mounting seat 1103 remains unchanged, but the rod sleeve a1101 is driven by the extension and contraction of the hydraulic cylinder 301, so that the rod sleeve b1104 inside it and the transmission rod 1102 are extended and contracted. Since the rod sleeve b1104 and the rod sleeve a1101 are a rotating structure, that is to say, when the rod sleeve b1104 is transmitting the transmission rod 1102, when the hydraulic cylinder 301 is extended and contracted, the nesting position of the rod sleeve b1104 and the transmission rod 1102 changes, which will not affect the transmission. It is only necessary to keep the rod sleeve b1104 and the transmission rod 1102 in the nested state when the hydraulic cylinder 301 drives the top mold 4 to perform molding and reset.

[0077] In summary, the molding device can realize the operation of the device by controlling the motor 101, the cylinder 10 and the hydraulic cylinder 301. According to the polygonal structure of the slot of the mold body a6, each rotation angle is used as an adjustment unit. The mold body a6 is adjusted by starting the motor 101. During the adjustment process, the top mold 4 will also rotate accordingly. Since the rotation radius of the top mold 4 and the mold body a6 are different, the speed of the gearbox 302 is adjusted to make the speed match between the top mold 4 and the mold body a6 consistent, so that after each adjustment, an overall adjustment is performed. After the position is determined, the mold body a6 is adjusted. An appropriate amount of alloy powder is filled into the die groove 601 on a6 and spread evenly. The hydraulic cylinder 301 drives the connecting frame 8 to drive the top die 4 to mold the alloy powder. After molding, the telescopic end of the cylinder 10 passes through the circular hole a104 on the base 1 and the hole groove 501 on the fixed seat 5 in turn into the circular hole b604 of the die groove 601 corresponding to the bottom die 2, and drives the push rod 703 of the elastic part 7, thereby driving the circular plate a701 to eject the molded part. Afterwards, the elastic part 7 is reset by the spring 704 along with the contraction of the cylinder 10. After one molding is completed, continue filling and repeat molding.

[0078] The above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A molding device for alloy powder casting, characterized in that: It comprises a pedestal (1), a bottom mold (2) arranged on the pedestal (1), a top plate (3) connected by a plurality of support rods on both sides of the pedestal (1), and a top mold (4) driven by a hydraulic cylinder (301) arranged on the top plate (3) for molding; The bottom mold (2) is generally in the form of an outer circle and an inner polygonal structure. The bottom mold (2) includes a circular structure, a fixed seat (5) fixed on the pedestal (1), and a mold body a (6) rotatably connected to the fixed seat (5). The mold body a (6) is driven by a transmission assembly (9) provided inside the pedestal (1). A polygonal slot is provided on the mold body a (6), and mold grooves (601) for filling alloy powder are respectively provided at the centers of multiple inner end faces of the polygonal slots. The bottoms of the multiple mold grooves (601) are all provided with a bottom plate (602) and an elastic member (7) elastically connected to the bottom plate (602) and cooperating with a cylinder (10) provided inside the pedestal (1) to eject the molded part. The top die (4) is in a polygonal structure as a whole. The top die (4) is located in the slot of the die body a (6) and has the same shape as the slot of the die body a (6). The top die (4) includes a die body b (401). A molding module (402) corresponding to the die slot (601) and used for molding the alloy powder is provided at the center of the outer end surface of the die body b (401). Connecting frames (8) connected to the telescopic end of the hydraulic cylinder (301) are provided on both sides of the top die (4). The connecting frames (8) are rotatably connected to the top die (4), and a transmission adjustment box c (801) for controlling the rotation of the top die (4) is provided on one side of the connecting frame (8). A transmission adjustment box a (102) for transmission via a transmission assembly (9) is provided on one side of the pedestal (1), a gearbox (302) is provided on the top of the top plate (3), and transmission adjustment boxes b (303) corresponding to the transmission adjustment box a (102) and the transmission adjustment box c (801) are provided on both sides of the gearbox (302), respectively. The transmission adjustment box b (303) corresponding to the position of the transmission adjustment box c (801) transmits the transmission adjustment box c (801) via an adjustment shaft (11) adapted to the longitudinal movement of the top mold (4), and the transmission adjustment box b (303) corresponding to the position of the transmission adjustment box a (102) transmits the transmission adjustment box a (102) via a shaft.

2. The die pressing device for alloy powder casting according to claim 1, characterized in that: The top of the pedestal (1) is provided with an arc-shaped groove (103) matching the fixed seat (5), transmission openings (105) are provided on both sides of one end of the arc-shaped groove (103), a circular hole a (104) through which the telescopic end of the cylinder (10) passes is provided at the center of the arc-shaped groove (103), and a motor (101) for transmitting the transmission assembly (9) is provided on the side wall of the pedestal (1).

3. The die pressing device for alloy powder casting according to claim 2, characterized in that: The transmission assembly (9) comprises a conical gear set a (901) and a transmission gear (902) for linear transmission via a shaft connected to the transmission end of the motor (101). Two sets of the transmission gear (902) are provided, and the two sets of the transmission gear (902) engage and drive the mold body a (6) via the transmission port (105).

4. The die pressing device for alloy powder casting according to claim 3, characterized in that: The transmission adjustment box a (102) is provided with a conical gear set b (12) inside, the two transmission adjustment boxes b (303) are provided with a conical gear set c (13) and a conical gear set d (14) inside, respectively, the transmission adjustment box c (801) is provided with a conical gear set f (802), the conical gear set a (901), the conical gear set b (12), the conical gear set c (13), the conical gear set d (14) and the conical gear set f (802) are all composed of two groups of radially meshed gears, which are used for converting the transmission direction, and the gearbox (302) is used for adjusting the transmission speed.

5. The die pressing device for alloy powder casting according to claim 1, characterized in that: The adjusting shaft (11) comprises a rod sleeve a (1101) and a transmission rod (1102); The rod sleeve a (1101) is provided with a mounting seat (1103) connected to the bottom surface of the top plate (3); the rod sleeve a (1101) is provided with a rod sleeve b (1104) rotatably connected to the rod sleeve a (1101) inside; one end of the rod sleeve b (1104) is provided with a connecting end a (1105); and the inner wall of the rod sleeve b (1104) is provided with tooth grooves b along a circumference; The transmission rod (1102) is provided with a tooth body matching the tooth groove b, and the transmission rod (1102) is embedded in the rod sleeve b (1104) through the tooth body. One end of the transmission rod (1102) is provided with a connecting end b (1106).

6. The die pressing device for alloy powder casting according to claim 3, characterized in that: The bottom of the fixing seat (5) is provided with an arc-shaped hole groove (501), and the circular outer end surface of the mold body a (6) is provided with tooth grooves a (603) on both sides thereof for engaging with the two groups of transmission teeth (902), and multiple groups of circular holes b (604) corresponding to the center positions of the multiple mold grooves (601) are provided between the two groups of tooth grooves a (603).

7. The die pressing device for alloy powder casting according to claim 6, characterized in that: A circular groove (605) having a diameter smaller than that of the mold groove (601) is provided at the center of the bottom of the plurality of mold grooves (601), the center of the circular groove (605) is connected to the circular hole b (604), the elastic member is arranged in the circular groove (605), and the elastic member (7) includes a circular plate a (701) connected to the bottom plate (602), a circular plate b (702) fixed on the bottom surface of the circular groove (605), a spring (704) arranged between the circular plate a (701) and the circular plate b (702), and a push rod (703) connected to the circular plate a (701) and extending through the circular plate b (702) to the inside of the circular hole b (604).

8. The die pressing device for alloy powder casting according to claim 7, characterized in that: The plurality of mold grooves (601) are different from each other, the bottom plate (602) matches the mold groove (601), and the circular grooves (605) and elastic members (7) in the plurality of mold grooves (601) are the same.

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