Alloy powder compacting apparatus

Abstract

The application discloses alloy powder casting die pressing equipment and relates to the field of alloy powder casting. The alloy powder casting die pressing equipment comprises a driving seat and a frame. A die frame is slidably arranged on the top of the frame. A bottom die is rotatably arranged on the top of the driving seat. A plurality of die grooves are arranged on the bottom die. A bottom disc is arranged in the die grooves. A jacking plate is arranged on the top of the bottom disc. An inner cavity is formed in the bottom disc. An oil absorption layer matched with the inner cavity is arranged on the outer wall of the bottom disc. A top die matched with the bottom die is rotatably arranged in the die frame. When the top die drives the die body to slide downwards, the top die is adjusted to rotate by a certain angle through a fixed gear, so that the top die can be adaptively adjusted following the adjustment of the bottom die. The jacking plate is extruded to slide downwards, so that the first opening on the sealing plate and the second opening on the bottom disc are in a coincident state. The oil absorption layer absorbs the jacking plate and applies a release agent to the inner wall of the die groove.

Description

Technical Field

[0001] This invention relates to the field of alloy powder casting, specifically to a molding device for alloy powder casting. Background Technology

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

[0003] The current molding process in alloy powder casting is a cold pressing process for alloy powder. Alloy powder is filled into a pre-molded bottom mold, and a hydraulic cylinder drives a top mold to extrude the powder under pressure. However, existing alloy powders have friction with the mold's inner wall, and some powders or binders in the formula easily adhere to the mold surface. If a release agent is not applied to the bottom mold, it may lead to accelerated wear on the mold's inner wall, shortening its service life. Furthermore, the release agent cannot be applied excessively; too much may leave residue that affects the debinding and sintering of the workpiece. Too little release agent requires reapplying it each time the workpiece is lifted from the mold, which is wasteful of manpower and resources and reduces overall processing efficiency. Moreover, different parts require different top and bottom molds, making the disassembly and assembly process cumbersome and failing to meet the needs of actual production.

[0004] In summary, the above structure is too wasteful of manpower and resources for applying release agent in actual use. At the same time, the overall disassembly and assembly process is too cumbersome when processing different parts, thus reducing the overall processing efficiency. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a molding equipment for alloy powder casting, so as to solve the technical problem that the application of release agent is too wasteful of manpower and resources in actual use, and the overall disassembly and assembly process is too cumbersome when processing different parts, thereby reducing the overall processing efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a molding device for alloy powder casting, comprising a drive base and a frame, a mold frame slidably disposed on the top of the frame, a bottom mold rotatably disposed on the top of the drive base, an array of mold grooves disposed on the bottom mold, wherein a base plate is slidably disposed vertically in each mold groove, a lifting plate is elastically disposed on the top of the base plate, the top of the lifting plate is flush with and sealed to the bottom of the mold groove, an inner cavity is opened in the base plate, an oil-based mold release agent is disposed in the inner cavity, and an oil-absorbing layer is disposed on the outer wall of the base plate that cooperates with the inner cavity;

[0007] The mold frame is rotatably provided with a top mold that cooperates with the bottom mold. The top of the top mold is slidably provided with an array of mold bodies in the vertical direction. The number of mold bodies corresponds to the mold grooves. A toothed rod is slidably provided on one side of the mold frame, and an adjusting column is rotatably provided on the inner wall of the frame. The outer wall of the adjusting column is provided with an array of irregular grooves, and the depth of each set of irregular grooves is different.

[0008] By adopting the above technical solution, the bottom mold rotates at a certain angle, and the adjusting wheel rotates under the action of the toothed block, thereby causing the adjusting column in the slide groove to rotate. Therefore, when the top mold drives the mold body to slide downward, the top mold can be adjusted to rotate at a certain angle by the fixed gear, so that the top mold can be adjusted adaptively with the adjustment of the bottom mold. The lifting plate will slide downward when it is squeezed. At this time, the elastically set sealing plate will slide down, so that the first opening on the sealing plate coincides with the second opening on the chassis. The oil-based mold release agent in its inner cavity will flow to the outside, and then be absorbed by the oil-absorbing layer. During the lifting process of the part, the mold release agent is applied to the inner wall of the mold groove by the movement of the oil-absorbing layer.

[0009] The invention is further configured such that an array of second openings are provided on the chassis in the inner cavity, wherein a sealing plate is elastically provided in the interlayer of the chassis, and a first opening corresponding to the second openings is provided on the sealing plate. The bottom of the lifting plate extends through the inner cavity and is connected to a sliding plate, which is used to drive the sealing plate to slide in the vertical direction.

[0010] Preferably, during the process of the lifting plate raising and lifting the workpiece, it will overcome the force of the elastic component of the sealing plate, causing the lifting plate to drive the sliding plate to slide downward. This causes the first opening on the sealing plate to slide downward until it coincides with the second opening on the chassis. At this time, the oil-based mold release agent in the inner cavity will flow outward through the first and second openings and be absorbed by the oil-absorbing layer. Then, during the process of sliding and lifting the part, it will be applied to the inner wall of the mold groove.

[0011] The present invention is further configured such that a cylinder is provided at the top of the frame, wherein the output end of the cylinder extends through the frame and is connected to a mold frame, and the cylinder is used to drive the mold frame to slide in the vertical direction.

[0012] Preferably, the cylinder facilitates the vertical sliding of the mold frame at the output end, thereby enabling the die casting of alloy powder in the mold groove in conjunction with the mold body.

[0013] The invention is further configured such that a toothed block is provided on a portion of the outer wall of the bottom mold, and an adjusting wheel that cooperates with the toothed block is rotatably arranged inside the frame, with the top of the adjusting wheel connected to an adjusting column.

[0014] Preferably, the locally arranged toothed blocks facilitate the rotation of the adjusting wheel at a certain angle during the rotation of the bottom mold driven by the drive seat, ensuring that the adjusting column does not rotate excessively in the slide groove, and further improving the adaptability of the subsequent rotation between the mold groove and the mold body.

[0015] The invention is further configured such that the inner wall of the frame is provided with a sliding groove, wherein the sliding groove allows the adjusting column to rotate at different angles in the vertical direction.

[0016] Preferably, the chute facilitates the stability of the rack during the sliding process of the mold frame, ensuring that the rack can slide in the vertical direction. Furthermore, the width of the chute itself is greater than that of the adjusting column, so that the chute itself will not interfere with the adjusting column during its rotation.

[0017] The present invention is further configured such that a fixed gear is provided on the top of the top mold, wherein a toothed bar is meshed on one side of the fixed gear, and the toothed bar itself is elastically positioned inside the mold frame.

[0018] Preferably, the toothed rod is driven to slide horizontally by the action of the irregular groove. Since a fixed gear is engaged on one side of the toothed rod, the toothed rod will drive the fixed gear to rotate during the sliding process, thereby adjusting the angle of the top mold so that different mold bodies correspond to the bottom mold groove.

[0019] The present invention is further configured such that one end of the toothed rod penetrates the mold frame and is provided with an arc-shaped end face, and the contact surface between the arc-shaped end face and the irregular groove is smoothly configured.

[0020] Preferably, the arc-shaped surface facilitates the rack from jamming during sliding, and the smooth surface effectively reduces the sliding friction between the rack and the groove, thus reducing the resistance during the rack's sliding process.

[0021] The invention is further configured such that the top of the chute is inclined at an angle, and the height of its adjusting column is the same as the opening height of the chute.

[0022] Preferably, the chamfered shape allows the mold frame to break through the limitations of the slide groove during the upward sliding process of the cylinder, so that it is at the top of the slide groove. At this time, it is convenient for the adjusting column in the slide groove to rotate and adjust, ensuring the stability of the adjustment between the mold body and the mold groove.

[0023] The present invention is further configured such that the edge of the oil-absorbing layer is sealed to the chassis.

[0024] Preferably, the sealing design can effectively prevent excessive leakage of mold release agent, further improving the overall processing environment.

[0025] The present invention is further configured such that one end of the lifting plate is sealed at the connection with the chassis.

[0026] Preferably, the sealing arrangement at this location prevents the release agent from leaking through the lifting plate, further ensuring the stability of the release agent within the cavity.

[0027] In summary, the present invention has the following main beneficial effects:

[0028] 1. This invention features multiple mold grooves on the bottom mold and a toothed block on one side of the bottom mold. When processing different parts, the bottom mold rotates at a certain angle, and the toothed block drives the adjusting wheel to rotate, thereby causing the adjusting column in the slide to rotate. Since different surfaces of the adjusting column are provided with irregular grooves of different depths, when the top mold drives the mold body to slide downward, the elastic component drives the toothed rod to move, thereby achieving the adjustment of the top mold to a certain angle through the fixed gear. This allows the top mold to adapt to the adjustment of the bottom mold, effectively achieving the matching of adjustment between the mold body and the mold groove. During this process, it is not necessary to repeatedly disassemble the bottom mold and the top mold for processing different parts, thus increasing the overall processing and casting efficiency.

[0029] 2. This invention features a chassis that slides within the mold cavity. Under normal conditions, the lifting plate at the top of the chassis is flush with and sealed to the bottom of the mold cavity. After the cylinder drives the mold body for die casting, the chassis moves upward via the drive seat. During this process, the lifting plate is compressed and slides downward. At this time, the elastically set sealing plate slides down, causing the first opening on the sealing plate to coincide with the second opening on the chassis. The oil-based release agent in the inner cavity flows outward and is absorbed by the oil-absorbing layer. During the lifting process of the part, the movement of the oil-absorbing layer applies the release agent to the inner wall of the mold cavity. This process ensures that the release agent is applied after each part is lifted, saving a significant amount of manpower and resources. Attached Figure Description

[0030] Figure 1 This is a perspective view of the present invention;

[0031] Figure 2 This is a schematic diagram of the top mold structure of the present invention;

[0032] Figure 3 For the present invention Figure 2 Enlarged view of A in the middle;

[0033] Figure 4 This is a schematic diagram of the bottom mold structure of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the top mold in the adjusted state of the present invention;

[0035] Figure 6 This is a schematic diagram of the cylinder drive structure of the present invention;

[0036] Figure 7 This is a schematic diagram of the irregular groove structure of the present invention;

[0037] Figure 8 This is a schematic diagram of the rack and fixed gear structure of the present invention;

[0038] Figure 9 This is a schematic diagram of the structure of the bottom mold in the adjustable state of the present invention;

[0039] Figure 10 This is a schematic diagram of the feeding mechanism of the present invention;

[0040] Figure 11 This is a cross-sectional view of the feeding mechanism of the present invention in its normal state;

[0041] Figure 12 This is a cross-sectional view of the feeding mechanism of the present invention in the feeding state;

[0042] Figure 13 For the present invention Figure 12 A magnified view of B in the middle.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Drive base; 2. Frame; 3. Cylinder; 4. Mold frame; 5. Top mold; 6. Bottom mold; 7. Mold groove; 8. Mold body; 9. Adjusting column; 10. Gear rack; 11. Fixed gear; 12. Irregular groove; 13. Lifting plate; 14. Chassis; 15. Oil absorption layer; 16. First opening; 17. Sliding plate; 18. Inner cavity; 19. Sealing plate; 20. Slide groove; 21. Gear block; 22. Adjusting wheel; 23. Second opening. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0046] The embodiments of the present invention will now be described.

[0047] Example 1: Please refer to Figures 1-13 The mold pressing equipment for alloy powder casting shown includes a drive base 1, a frame 2, a mold frame 4, an adjustment mechanism, a transmission mechanism, and a coating mechanism. The mold frame 4 is slidably arranged on the top of the frame 2. The bottom mold 6 is rotatably arranged on the top of the drive base 1, and an array of mold grooves 7 are arranged on the bottom mold 6. The base plate 14 is slidably arranged vertically in the mold grooves 7. The top of the base plate 14 is elastically arranged on the top of the base plate 14. Under normal conditions, the top of the top plate 13 is flush with the bottom of the mold groove 7 and sealed. The operator pours alloy powder into the mold groove 7, and then slides the top mold 5 in the mold frame 4 downward, so that the mold body 8 is inserted into the mold groove 7 to compress the alloy powder, thereby completing the molding work of the alloy powder parts.

[0048] Subsequently, under the action of cylinder 3, the mold frame 4 will be driven to slide upwards to reset. During this process, the drive seat 1 will cause the chassis 14 to slide upwards accordingly. Since there are still parts in the mold groove 7, during the upward sliding of the chassis 14, the lifting plate 13 will drive the sliding plate 17 in the inner cavity 18 to slide down. Since the chassis 14 has an array of second openings 23 located in the inner cavity 18, and a sealing plate 19 is elastically provided in the interlayer of the chassis 14, a first opening 16 corresponding to the second openings 23 is opened on the sealing plate 19, and the bottom of the lifting plate 13 extends through into the inner cavity 18 and is connected to the sliding plate 17, which is used for The sealing plate 19 slides vertically. During the process of the lifting plate 13 rising to lift the workpiece, the lifting plate 13 drives the sliding plate 17 to slide downward, thereby causing the first opening 16 on the sealing plate 19 to slide downward until it coincides with the second opening 23 on the chassis 14. At this time, the oil-based mold release agent in the inner cavity 18 will flow to the outside through the first opening 16 and the second opening 23, and be absorbed by the oil-absorbing layer 15. Then, during the process of sliding to lift the part, it is applied to the inner wall of the mold groove 7. In this process, the mold release agent is applied to each part after each part is lifted, saving a lot of manpower and material resources.

[0049] Furthermore, after prolonged parts processing, when different parts need to be die-cast, the bottom mold 6 will rotate under the action of the drive seat 1. Since the outer wall of the bottom mold 6 is partially equipped with toothed blocks 21, and an adjusting wheel 22 that rotatably engages with the toothed blocks 21 is rotatably installed inside the frame 2, with the top of the adjusting wheel 22 connected to the adjusting column 9, the partially equipped toothed blocks 21 facilitate the rotation of the adjusting wheel 22 at a certain angle during the rotation of the bottom mold 6 by the drive seat 1, thereby driving the adjusting column 9 to rotate. The outer wall of the adjusting column 9 is equipped with an array of irregularly shaped grooves 12, each with a different depth. During the downward sliding of the mold frame 4 driven by the cylinder 3, a fixed gear 11 is installed on the top of the top mold 5, wherein the fixed gear... A toothed rod 10 is meshed on one side of the wheel 11. The toothed rod 10 is located on the inner side of the mold frame 4 and is elastically set. Under the action of the irregular groove 12, the toothed rod 10 will be driven to slide in the horizontal direction. Since a fixed gear 11 is meshed on one side of the toothed rod 10, the toothed rod 10 will drive the fixed gear 11 to rotate during the sliding process, thereby adjusting the angle of the top mold 5. Since a number of mold bodies 8 corresponding to the mold groove 7 are set at the bottom of the top mold 5, different mold bodies 8 can be made to correspond to the bottom mold groove 7, so that the top mold 5 can be adaptively adjusted with the adjustment of the bottom mold 6, effectively realizing the matching between the adjustment of the mold body 8 and the mold groove 7. In this process, it is not necessary to repeatedly disassemble the bottom mold 6 and the top mold 5 for the processing of different parts, which increases the overall processing and die casting efficiency.

[0050] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 The inner wall of the frame 2 is provided with a sliding groove 20, which allows the adjusting column 9 to rotate at different angles in the vertical direction. The sliding groove 20 facilitates the stability of the toothed rod 10 during the sliding process through the mold frame 4, ensuring that the toothed rod 10 can slide in the vertical direction. Furthermore, the width of the sliding groove 20 is greater than that of the adjusting column 9, so the sliding groove 20 itself will not interfere with the adjusting column 9 during its rotation.

[0051] For details regarding the above embodiments, please refer to [link / reference]. Figure 7 One end of the toothed rod 10 passes through the mold frame 4 and is provided with an arc-shaped end face. The contact surface between the arc-shaped end face and the irregular groove 12 is smooth. The arc-shaped surface makes it easy for the toothed rod 10 to get stuck during the sliding process. The smooth surface effectively reduces the sliding friction between the toothed rod 10 and the irregular groove 12, and reduces the resistance during the sliding process of the toothed rod 10.

[0052] For details regarding the above embodiments, please refer to [link / reference]. Figure 10The oil-absorbing layer 15 is made of polyurethane sponge material with a three-dimensional mesh structure. When facing mineral oil release agents, it can absorb up to ten times its own weight in oil. When the chassis 14 drives it to slide vertically, the oil-absorbing layer 15 will contact the inner wall of the mold groove 7, thereby evenly applying the oil-based lubricant absorbed by the oil-absorbing layer 15 to the inner wall of the mold groove 7. A limit block is set on the outer wall of the lifting plate 13, and a corresponding limit groove is set in the mold groove 7. During the casting molding process, the lifting plate 13 itself will not slide downward, so as to achieve orderly casting of alloy parts.

[0053] Example 2: Please refer to Figure 5 The mold pressing equipment for alloy powder casting shown has an overall structure similar to that of Embodiment 1. The top of the slide 20 is set at a chamfer, and the height of its adjusting column 9 is the same as the opening height of the slide 20. The chamfer setting makes it easy for the mold frame 4 to break through the restriction of the slide 20 during the upward sliding of the cylinder 3, so that it is at the top of the slide 20. At this time, it is easy for the adjusting column 9 in the slide 20 to rotate and adjust through the adjusting wheel 22, ensuring the stability of the adjustment between the mold body 8 and the mold groove 7. In addition, the chamfer setting facilitates the sliding of the gear 10, improving the overall adjustment stability of the device.

[0054] In practical operation, the present invention is used as follows: alloy powder is poured into the mold groove 7 on the bottom mold 6 and scraped to remove air. Then, the cylinder 3 drives the top mold 5 to move downward, so that the mold body 8 on the top mold 5 is inserted into the mold groove 7 to extrude the alloy powder. After extrusion, the cylinder 3 drives the top mold 5 to slide upward and reset. At this time, the hydraulic cylinder installed in the drive seat 1 drives the chassis 14 in the mold groove 7 to slide upward. Since the mold groove 7 contains the extruded alloy parts, as the chassis 14 drives the lifting plate 13 to slide upward, the lifting plate 13 itself will retract into the chassis 14. The lifting plate 13 drives the bottom sliding plate 17 to slide downward, so that the sealing plate 19 in the interlayer of the chassis 14 slides.

[0055] At this time, the first opening 16 on the sealing plate 19 will coincide with the second opening 23 on the chassis 14, thereby causing the oil-based mold release agent in the inner cavity 18 to flow to the outside and be absorbed by the oil-absorbing layer 15. During the lifting process of the part, the mold release agent is applied to the inner wall of the mold groove 7 by the movement of the oil-absorbing layer 15, which facilitates the subsequent demolding work. After the part is removed, the sealing plate 19 is reset and slid by the action of the elastic component in the interlayer of the chassis 14. At this time, the first opening 16 and the second opening 23 are misaligned, thereby completing the sealing work of the oil-based mold release agent in the inner cavity 18.

[0056] The elastic component is a compression spring. The compression spring is arranged along the sliding direction of the sealing plate 19, with one end connected to the inner wall of the interlayer of the chassis 14 and the other end connected to the bottom of the sealing plate 19.

[0057] When workers need to process different parts, the bottom mold 6 is provided with a number of different mold grooves 7. Therefore, the motor installed in the drive seat 1 can drive the bottom mold 6 to rotate at a certain angle. Since the outer wall of the bottom mold 6 is partially provided with toothed blocks 21, the toothed blocks 21 will drive the adjusting wheel 22 on one side to rotate. This causes the different irregular grooves 12 on the adjusting column 9 to rotate to the toothed rod 10. Since the depth of the irregular grooves 12 is different, when the mold frame 4 slides down through the cylinder 3, the toothed rod 10 will slide horizontally under the action of the irregular grooves 12 of different depths, thereby driving the fixed gear 11 that meshes with it to rotate at the corresponding angle. This allows the top mold 5 to be adjusted adaptively with the adjustment of the bottom mold 6, effectively realizing the matching between the mold body 8 and the mold grooves 7. In this process, it is not necessary to repeatedly disassemble the bottom mold 6 and the top mold 5 for processing different parts, which increases the overall processing and casting efficiency.

[0058] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A molding device for alloy powder casting, comprising a drive base (1) and a frame (2), wherein a mold frame (4) is slidably disposed on the top of the frame (2), characterized in that: A bottom mold (6) is rotatably mounted on the top of the drive base (1). An array of mold grooves (7) is provided on the bottom mold (6). A base plate (14) is slidably mounted vertically in each mold groove (7). A lifting plate (13) is elastically mounted on the top of the base plate (14). The top of the lifting plate (13) is flush with and sealed to the bottom of the mold groove (7). An inner cavity (18) is opened in the base plate (14). An oil-based mold release agent is provided in the inner cavity (18). The outer wall of the base plate (14) is provided with a groove that connects to the inner cavity. (18) The oil-absorbing layer (15) is matched. The chassis (14) is provided with an array of second openings (23) at the inner cavity (18). A sealing plate (19) is elastically provided in the interlayer of the chassis (14). A first opening (16) corresponding to its second opening (23) is provided on the sealing plate (19). The bottom of the lifting plate (13) extends into the inner cavity (18) and is connected to a sliding plate (17). The sliding plate (17) is used to drive the sealing plate (19) to slide in the vertical direction. The mold frame (4) is rotatably provided with a top mold (5) that cooperates with the bottom mold (6). The top of the top mold (5) is slidably provided with an array of mold bodies (8) in the vertical direction. The number of the mold bodies (8) corresponds to the mold groove (7). A toothed rod (10) is slidably provided on one side of the mold frame (4), and an adjusting column (9) is rotatably provided on the inner wall of the frame (2). The outer wall of the adjusting column (9) is provided with an array of irregular grooves (12), and the depth of each set of irregular grooves (12) is different.

2. The molding equipment for alloy powder casting according to claim 1, characterized in that: A cylinder (3) is provided at the top of the frame (2), wherein the output end of the cylinder (3) extends through the frame (2) and is connected to the mold frame (4). The cylinder (3) is used to drive the mold frame (4) to slide in the vertical direction.

3. The molding equipment for alloy powder casting according to claim 1, characterized in that: The outer wall of the bottom mold (6) is partially provided with toothed blocks (21), and an adjusting wheel (22) that cooperates with the toothed blocks (21) is rotatably provided inside the frame (2). The top of the adjusting wheel (22) is connected to the adjusting column (9).

4. The molding equipment for alloy powder casting according to claim 3, characterized in that: The inner wall of the frame (2) is provided with a sliding groove (20), wherein the sliding groove (20) allows the adjusting column (9) to rotate at different angles in the vertical direction.

5. The molding equipment for alloy powder casting according to claim 1, characterized in that: The top of the top mold (5) is provided with a fixed gear (11), wherein a toothed bar (10) meshes with one side of the fixed gear (11), and the toothed bar (10) itself is located on the inner side of the mold frame (4) and is elastically configured.

6. The molding equipment for alloy powder casting according to claim 1, characterized in that: One end of the toothed rod (10) passes through the mold frame (4) and has an arc-shaped end face. The contact surface between the arc-shaped end face and the irregular groove (12) is smooth.

7. The molding equipment for alloy powder casting according to claim 4, characterized in that: The top of the chute (20) is set at an inverted angle, and the height of its adjusting column (9) is the same as the opening height of the chute (20).

8. The molding equipment for alloy powder casting according to claim 1, characterized in that: The edge of the oil-absorbing layer (15) is sealed to the chassis (14).

9. The molding equipment for alloy powder casting according to claim 1, characterized in that: The connection between one end of the lifting plate (13) and the chassis (14) is sealed.

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