Four-way vibration table for powder metallurgy die steel powder treatment

Abstract

This invention discloses a four-directional vibrating bed for processing powder metallurgy tool steel powder, belonging to the field of powder metallurgy technology. It includes a fixed base and a vibrating base plate. The vibrating base plate is movably mounted on the upper part of the fixed base. A vibrator is installed at the middle position between the fixed base and the vibrating base plate. Four sets of fixing frames for horizontal vibration of the package are fixedly mounted on the upper outer surface of the vibrating base plate. Two sets of excitation cylinders are vertically mounted on one side of each fixing frame. A docking seat for package installation is movably mounted on the upper end of the vibrating base plate. Four sets of telescopic clamps for fixing the package are movably mounted on the inner side of the docking seat. Replacing the unidirectional vibration structure of the transmission, this invention allows for multi-directional vibration of the metal powder within the package. The combined excitation force breaks the limitation of a single dimension, effectively dispersing static friction between particles, eliminating local voids, and significantly improving filling uniformity and loose packing density.

Description

Technical Field

[0001] This invention belongs to the field of powder metallurgy technology, specifically a four-directional vibrating bed for powder metallurgy tool steel powder processing. Background Technology

[0002] This four-directional vibrating bed is a specialized piece of equipment designed to enhance the performance of high-end tool and die steel powder. Building upon traditional horizontal vibration, it innovatively incorporates vertical and multi-dimensional composite vibration modes, applying balanced vibrational forces from the front-to-back, left-to-right, up-down, and composite directions to the metal powder within the container. This powerful and uniform four-directional spatial compaction effectively breaks down bridging between powder particles, eliminates local voids, and achieves ultra-high powder loading density and excellent loose-pack uniformity. The treated powder exhibits significantly improved flowability, laying a solid foundation for subsequent isostatic pressing or filling processes. It is a key pretreatment device ensuring that the final tool and die steel products possess high density, excellent homogeneity, and stable mechanical properties.

[0003] Patent document CN101073832A discloses a method for vibratory densification of powder compacts. The method is characterized by applying a pressing pressure that varies systematically with the compact density to the powder in the die cavity using a die punch during the compaction process. When the relative density of the compact—loose packing density / theoretical density—is ≥0.05, vibration that also varies systematically with the compact density is simultaneously applied. The pressing pressure increases with increasing compact density; the vibration frequency increases with increasing compact density, falling within the range of 0–300 Hz; and the amplitude decreases with increasing compact density, falling within the range of 0–0.5 mm.

[0004] Existing powder metallurgy tool steel powders have certain shortcomings in processing. In powder metallurgy, the molding process after filling a casing with metal powder is essentially a "sealing first, then compaction" process. It mainly relies on cold isostatic pressing (CIP) or hot isostatic pressing (HIP) technology, using a fluid medium to apply pressure uniformly from all directions, compacting loose powder into a highly dense blank. Before entering the main press, a vibrating table (vibrating bed) is often used to pre-treat the casing. High-frequency vibration rearranges the powder particles, increasing the initial filling density and reducing the subsequent pressing pressure. Traditional vibrating beds use a unidirectional vibration structure design, which means that they can only vibrate the metal powder inside the casing in one direction. Unidirectional vibration only applies excitation force along a single axis (such as vertical or horizontal). Although the structure is simple and the cost is low, the energy transfer has obvious directionality, which can easily lead to directional arrangement and uneven density of powder particles (such as layered structures). In complex shaped cavities, it is easy to generate filling dead corners and bridging phenomena, reducing the compactness of the metal powder. Summary of the Invention

[0005] This invention provides a four-directional vibrating bed for processing powder metallurgy tool steel powder. It solves the problem of traditional vibrating beds in the prior art, which use a unidirectional vibration structure design. This design allows for unidirectional vibration of the metal powder within the casing, with excitation force applied only along a single axis (such as vertical or horizontal). While simple in structure and low in cost, this design suffers from significant energy transfer directionality, easily leading to directional alignment and uneven density (such as layered structures) of powder particles. Furthermore, it can easily cause filling dead zones and bridging phenomena in complex shaped cavities, reducing the compactness of the metal powder. A four-directional vibrating bed for powder metallurgy tool steel powder processing includes a fixed base and a vibrating base plate. The vibrating base plate is movably mounted on the upper part of the fixed base. A vibrator is installed at the middle position between the fixed base and the vibrating base plate. Four sets of fixing frames for horizontal vibration of the sleeve are fixedly mounted on the upper outer surface of the vibrating base plate. Two sets of excitation cylinders are vertically mounted on one side of the fixing frames. A docking seat for sleeve installation is movably mounted on the upper end of the vibrating base plate. Four sets of telescopic clamps for fixing the sleeve are movably mounted on the inner side of the docking seat. A driver for cooperating with the excitation cylinders is fixedly mounted on the outer side surface of the fixed base.

[0006] As a further technical solution of the present invention, a transverse top is fixedly installed on the outer surface of one end of the excitation cylinder, and four sets of fixed frames are arranged symmetrically in a cross shape. During operation, the sleeve is installed on the inner side of the docking seat, so that the four sets of fixed frames are symmetrically installed in a cross shape around the sleeve. The excitation cylinder is a hydraulic or pneumatic drive structure. The excitation cylinder is driven to extend and retract by the driver, so that the excitation cylinder drives the transverse top to move back and forth. The transverse top pushes the outer surface of the sleeve. Through the arrangement of the four sets of fixed frames, the sleeve is driven to vibrate horizontally in four directions, so that the metal powder inside the sleeve is more compacted.

[0007] As a further technical solution of the present invention, a docking strip is fixedly installed on the lower outer surface of the fixed frame, and a slot for use with the docking strip is provided on the upper outer surface of the vibration base plate. By using the docking strip to dock with the slot, the fixed frame can be limited and installed on the upper end of the vibration base plate. Then, the fixed slot is docked with bolts to complete the docking and fixing between the fixed frame and the vibration base plate.

[0008] As a further technical solution of the present invention, one end of the fixing frame is provided with a fixing groove, and the upper end of the fixing base is provided with a groove for use with the docking seat. The limiting slide at the bottom of the docking seat is movably installed in the groove of the fixing base. When the transverse top drives the sleeve to vibrate horizontally, the docking seat can move arbitrarily by utilizing the docking between the limiting slide and the groove.

[0009] As a further technical solution of the present invention, a limiting slide is fixedly installed at the lower end of the docking seat, and the docking seat and the fixed base are movably connected through the limiting slide. The bottom of the limiting slide is provided with a roller. By using the setting of the limiting slide, the docking seat can be moved and adjusted to any position in conjunction with the sleeve when the sleeve is vibrating in the transverse top drive.

[0010] As a further technical solution of the present invention, four sets of springs are provided between the docking seat and the limiting slide. The four sets of springs are arranged symmetrically in a cross shape. By using the arrangement of the four sets of springs, the docking seat can be elastically reset in four directions. When the transverse top head drives the sleeve to vibrate, the sleeve can be elastically reset.

[0011] As a further technical solution of the present invention, a lead screw is movably installed at the middle position of one end of the telescopic clamp. The lead screw and the telescopic clamp are threadedly connected. During operation, by rotating the lead screw, the lead screw can drive the telescopic clamp to move using the threaded structure. By controlling the position of the four sets of telescopic clamps, the four sets of telescopic clamps are respectively clamped and fixed on the side of the sleeve, thereby completing the limiting and fixing of sleeves of different diameters, so that the vibration generated by the transverse top head during operation can be better transmitted to the sleeve.

[0012] As a further technical solution of the present invention, one end of the telescopic clamp is provided with guide rods on both sides of the lead screw. The guide rods are movably connected to the docking seat. The inner side of the docking seat is provided with a sliding groove for use with the telescopic clamp and the guide rods. By using the guide rods, the telescopic clamp can move along the guide rods, thus avoiding the telescopic clamp from tilting.

[0013] As a further technical solution of the present invention, a rubber pad is fixedly installed on the outer surface of the other end of the telescopic clip. The outer surface of the rubber pad is provided with several sets of toothed grooves in a vertical manner. By using the rubber pad in conjunction with the toothed grooves, the friction between the telescopic clip and the sleeve can be improved.

[0014] As a further technical solution of the present invention, the upper outer surface of the fixed base is provided with support columns around the vibrator. The upper outer surface of the support columns and the vibrating base plate are elastically abutted by elastic pads. By using the support columns and elastic pads, the four corners of the vibrating base plate are elastically supported. In conjunction with the use of the vibrator, the vibrating base plate is vibrated to compact the metal powder inside the casing.

[0015] The beneficial effects of the present invention are as follows: By setting up four sets of excitation cylinders and a transverse mandrel, the present invention replaces the unidirectional vibration structure of the transmission when the four-directional vibrating bed for processing powder metallurgy tool steel powder is used. It can perform multi-directional vibration operation on the metal powder in the package. The excitation force in the composite direction breaks the limitation of the single dimension, effectively disperses the static friction between particles, eliminates local voids, and significantly improves the filling uniformity and loose packing density. In daily operation, the package filled with metal powder is placed on the docking seat of the vibrating base plate. The package is reinforced around its perimeter using telescopic clamps. Support columns and elastic pads provide elastic support at the four corners of the vibrating base plate. The vibrator is used to vibrate the base plate, thus vibrating the metal powder inside the package. The excitation cylinder is hydraulically or pneumatically driven, and a driver moves it telescopically, causing the cylinder to drive the transverse pusher to reciprocate. The transverse pusher pushes against the outer surface of the package. Four sets of fixed brackets are used to support the package. The horizontal drive of the sleeve vibrates in one direction, making the metal powder inside the sleeve more compact. The bottom of the limiting slide is equipped with rollers. By using the setting of the limiting slide, the docking seat can be moved and adjusted to any position when the sleeve is driven to vibrate by the horizontal top. The four sets of springs can elastically reset the docking seat in four directions. When the sleeve is driven to vibrate by the horizontal top, the sleeve can be elastically reset. Through the vibrator and four sets of excitation cylinders, the metal powder is vibrated in the front-back, left-right, up-down and composite directions, making the metal powder inside the sleeve more compact. By setting a telescopic clamping head, the use of the multi-directional vibration structure of the four-directional vibrating bed for powder metallurgy tool steel powder processing is optimized, so that the vibration can be better transmitted to the sheath, and at the same time, it can flexibly adapt to sheaths of different sizes, thus improving its applicability. During operation, rotating the lead screw drives the telescopic clamp to move using the threaded structure. By controlling the position of the four sets of telescopic clamps, each set is clamped and fixed to the side of the sleeve, thus achieving the limiting and fixing of sleeves of different diameters. This allows the vibration generated during the operation of the transverse top head to be better transmitted to the sleeve. The inner side of the docking seat is provided with a sliding groove for use with the telescopic clamp and guide rod. The guide rod allows the telescopic clamp to move along the guide rod, preventing the telescopic clamp from tilting. The rubber pad and toothed groove increase the friction between the telescopic clamp and the sleeve, improving the fixing effect of the telescopic clamp. Attached Figure Description To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an overall structural diagram of the fixing frame in this invention; Figure 3 This is a diagram of the internal structure of the docking seat in this invention; Figure 4 This is an overall structural diagram of the telescopic card head in this invention.

[0017] In the diagram: 1. Fixed base; 2. Driver; 3. Vibrator; 4. Support column; 5. Elastic pad; 6. Vibration base plate; 7. Fixing frame; 8. Excitation cylinder; 9. Sheath; 10. Docking seat; 11. Docking clip; 12. Fixing groove; 13. Transverse top head; 14. Spring; 15. Limiting slide; 16. Telescopic clamp; 17. Lead screw; 18. Guide rod; 19. Rubber pad; 20. Toothed groove. Detailed Implementation

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1-4 As shown, a four-directional vibrating bed for powder metallurgy tool steel powder processing includes a fixed base 1 and a vibrating base plate 6. The vibrating base plate 6 is movably installed on the upper part of the fixed base 1. A vibrator 3 is installed at the middle position between the fixed base 1 and the vibrating base plate 6. Four sets of fixing frames 7 for horizontal vibration of the sleeve 9 are fixedly installed on the upper outer surface of the vibrating base plate 6. Two sets of excitation cylinders 8 are vertically installed on one side of the fixing frame 7. A docking seat 10 for installation with the sleeve 9 is movably installed on the upper end of the vibrating base plate 6. Four sets of telescopic clamps 16 for fixing the sleeve 9 are movably installed on the inner side of the docking seat 10. A driver 2 for use with the excitation cylinder 8 is fixedly installed on the outer side surface of the fixed base 1.

[0020] A transverse top 13 is fixedly installed on the outer surface of one end of the excitation cylinder 8. The four sets of fixing frames 7 are arranged symmetrically in a cross shape. During operation, the sleeve 9 is installed inside the docking seat 10, so that the four sets of fixing frames 7 are arranged symmetrically in a cross shape around the sleeve 9. The excitation cylinder 8 is a hydraulic or pneumatic drive structure. The driver 2 drives the excitation cylinder 8 to extend and retract, so that the excitation cylinder 8 drives the transverse top 13 to move back and forth. The transverse top 13 pushes the outer surface of the sleeve 9. Through the arrangement of the four sets of fixing frames 7, the sleeve 9 is driven to vibrate horizontally in four directions, so that the metal powder inside the sleeve 9 is more compacted.

[0021] A docking strip 11 is fixedly installed on the lower outer surface of the fixed frame 7, and a slot is provided on the upper outer surface of the vibrating base plate 6 to cooperate with the docking strip 11. By using the docking strip 11 to cooperate with the slot, the fixed frame 7 can be limited and installed on the upper end of the vibrating base plate 6. Then, the fixed groove 12 is connected with bolts to complete the docking and fixing between the fixed frame 7 and the vibrating base plate 6.

[0022] One end of the fixed frame 7 is provided with a fixed groove 12, and the upper end of the fixed base 1 is provided with a groove for use with the docking seat 10. The limiting slide 15 at the bottom of the docking seat 10 is movably installed in the groove of the fixed base 1. When the transverse top head 13 drives the sleeve 9 to vibrate horizontally, the docking seat 10 can move arbitrarily by utilizing the docking between the limiting slide 15 and the groove.

[0023] A limiting slide 15 is fixedly installed at the lower end of the docking seat 10. The docking seat 10 and the fixed base 1 are movably connected through the limiting slide 15. The bottom of the limiting slide 15 is provided with a roller. By using the setting of the limiting slide 15, the docking seat 10 can move and adjust to any position in conjunction with the sleeve 9 when the transverse top head 13 drives the sleeve 9 to vibrate.

[0024] Four sets of springs 14 are provided between the docking seat 10 and the limiting slide 15. The four sets of springs 14 are arranged symmetrically in a cross shape. By using the four sets of springs 14, the docking seat 10 can be elastically reset in four directions. When the transverse top head 13 drives the sleeve 9 to vibrate, the sleeve 9 can be elastically reset.

[0025] A lead screw 17 is movably installed at the middle of one end of the telescopic clamp 16. The lead screw 17 and the telescopic clamp 16 are threaded together. During operation, by rotating the lead screw 17, the lead screw 17 can drive the telescopic clamp 16 to move using the threaded structure. By controlling the position of the four sets of telescopic clamps 16, the four sets of telescopic clamps 16 are respectively clamped and fixed on the side of the sleeve 9, thereby completing the limiting and fixing of sleeves 9 of different diameters, so that the vibration generated by the transverse top head 13 during operation can be better transmitted to the sleeve 9.

[0026] One end of the telescopic clamp 16 is provided with guide rods 18 on both sides of the lead screw 17. The guide rods 18 are movably connected to the docking seat 10. The inner side of the docking seat 10 is provided with a sliding groove for use with the telescopic clamp 16 and the guide rods 18. The telescopic clamp 16 is moved along the guide rods 18 by the guide rods 18 to avoid the telescopic clamp 16 from tilting.

[0027] A rubber pad 19 is fixedly installed on the outer surface of the other end of the telescopic head 16. Several sets of toothed grooves 20 are vertically arranged on the outer surface of the rubber pad 19. By using the rubber pad 19 in conjunction with the toothed grooves 20, the friction between the telescopic head 16 and the sleeve 9 can be increased.

[0028] Support columns 4 are provided on the upper outer surface of the fixed base 1 around the vibrator 3. The upper outer surface of the support columns 4 and the vibrating base plate 6 are elastically abutted by elastic pads 5. The support columns 4 and the elastic pads 5 are used to elastically support the four corners of the vibrating base plate 6. In conjunction with the use of the vibrator 3, the vibrating base plate 6 is vibrated to compact the metal powder in the casing 9.

[0029] A four-directional vibrating bed for processing powder metallurgy tool steel powder is disclosed. In use, a sleeve filled with metal powder is placed on the mating seat 10 of the vibrating base plate 6. The sleeve 9 is reinforced around its perimeter using telescopic clamps 16. Support columns 4, in conjunction with elastic pads 5, provide elastic support to the four corners of the vibrating base plate 6. The vibrator 3 is used to vibrate the vibrating base plate 6, thereby vibrating the metal powder inside the sleeve 9. The excitation cylinder is hydraulically or pneumatically driven. The driver 2 drives the excitation cylinder to extend and retract, causing the transverse pusher 13 to reciprocate. The transverse pusher 13 pushes against the outer surface of the sleeve 9. Four sets of fixed... The frame 7 is designed to drive the sleeve 9 to vibrate horizontally in four directions, making the metal powder inside the sleeve 9 more compact. The bottom of the limiting slide 15 is equipped with rollers. By using the limiting slide 15, the docking seat 10 can be moved and adjusted to any position when the sleeve 9 is driven to vibrate by the transverse top 13. The four sets of springs 14 can elastically reset the docking seat 10 in four directions. When the sleeve 9 is driven to vibrate by the transverse top 13, the sleeve 9 can be elastically reset. Through the vibrator 3 and the four sets of excitation cylinders, the metal powder is vibrated evenly in the front-back, left-right, up-down and composite directions, making the metal powder inside the sleeve 9 more compact. By rotating the lead screw 17, the lead screw 17 can drive the telescopic clamp 16 to move using the threaded structure. By controlling the position of the four sets of telescopic clamps 16, the four sets of telescopic clamps 16 are respectively clamped and fixed on the side of the sleeve 9, thereby completing the limiting and fixing of sleeves 9 of different diameters. This allows the vibration generated by the transverse top head 13 during operation to be better transmitted to the sleeve 9. The inner side of the docking seat 10 is provided with a sliding groove for use with the telescopic clamp 16 and the guide rod 18. The guide rod 18 is used to move the telescopic clamp 16 along the guide rod 18, preventing the telescopic clamp 16 from tilting. The rubber pad 19 and the toothed groove 20 are used to increase the friction between the telescopic clamp 16 and the sleeve 9, thereby improving the fixing effect of the telescopic clamp 16.

[0030] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A four-directional vibrating bed for powder metallurgy tool steel powder processing, characterized in that, The device includes a fixed base (1) and a vibrating base plate (6). The vibrating base plate (6) is movably installed on the upper part of the fixed base (1). A vibrator (3) is installed in the middle position between the fixed base (1) and the vibrating base plate (6). Four sets of fixing frames (7) for horizontal vibration of the sleeve (9) are fixedly installed on the upper outer surface of the vibrating base plate (6). Two sets of excitation cylinders (8) are vertically installed on one side of the fixing frame (7). A docking seat (10) for installation with the sleeve (9) is movably installed on the upper end of the vibrating base plate (6). Four sets of telescopic clamps (16) for fixing the sleeve (9) are movably installed on the inner side of the docking seat (10). A driver (2) for use with the excitation cylinder (8) is fixedly installed on the outer side of the fixed base (1).

2. The four-directional vibrating bed for powder metallurgy tool steel powder processing according to claim 1, characterized in that, A transverse top head (13) is fixedly installed on the outer surface of one end of the excitation cylinder (8), and the four sets of fixing frames (7) are arranged symmetrically in a cross shape.

3. The four-directional vibrating bed for powder metallurgy tool steel powder processing according to claim 2, characterized in that, The lower outer surface of the fixed frame (7) is fixedly installed with a docking strip (11), and the upper outer surface of the vibration base plate (6) is provided with a slot for use with the docking strip (11).

4. A four-directional vibrating bed for powder metallurgy tool steel powder processing according to claim 3, characterized in that, One end of the fixing frame (7) is provided with a fixing groove (12), and the upper end of the fixing base (1) is provided with a groove for use with the docking seat (10).

5. A four-directional vibrating bed for powder metallurgy tool steel powder processing according to claim 1, characterized in that, The lower end of the docking seat (10) is fixedly installed with a limiting slide (15). The docking seat (10) and the fixed base (1) are movably connected by the limiting slide (15). The bottom of the limiting slide (15) is provided with a roller.

6. A four-directional vibrating bed for powder metallurgy tool steel powder processing according to claim 5, characterized in that, Four sets of springs (14) are provided between the docking seat (10) and the limiting slide (15), and the four sets of springs (14) are arranged symmetrically in a cross shape.

7. A four-directional vibrating bed for powder metallurgy tool steel powder processing according to claim 1, characterized in that, A lead screw (17) is movably installed at the middle of one end of the telescopic clamp (16), and the lead screw (17) and the telescopic clamp (16) are threaded together.

8. A four-directional vibrating bed for powder metallurgy tool steel powder processing according to claim 7, characterized in that, One end of the telescopic clamp (16) is provided with guide rods (18) on both sides of the lead screw (17). The guide rods (18) and the docking seat (10) are movably connected. The inner side of the docking seat (10) is provided with a sliding groove for use with the telescopic clamp (16) and the guide rods (18).

9. A four-directional vibrating bed for powder metallurgy tool steel powder processing according to claim 8, characterized in that, A rubber pad (19) is fixedly installed on the outer surface of the other end of the telescopic clip (16), and the outer surface of the rubber pad (19) is provided with several sets of toothed grooves (20) in a vertical manner.

10. A four-directional vibrating bed for powder metallurgy tool steel powder processing according to claim 1, characterized in that, The upper outer surface of the fixed base (1) is provided with support columns (4) around the vibrator (3), and the upper outer surface of the support column (4) and the vibrating base plate (6) are elastically abutted by an elastic pad (5).

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