Powder metallurgy production device of automobile booster pump stator and stator thereof

Abstract

The invention relates to the technical field of automobile booster pump production, in particular to an automobile booster pump stator powder metallurgy production device and a stator thereof.The automobile booster pump stator powder metallurgy production device comprises a base plate, and a metallurgical mold is rotationally installed in the middle of the upper end of the base plate in a penetrating mode. A connecting rod is firstly pulled outwards to drive a limiting block to be separated from a connecting plate, then a fourth hydraulic cylinder is started, a rotating rod, a circular ring and a uniform ejector rod are pushed to synchronously move up and down in the metallurgical mold in a reciprocating mode, and the uniform ejector rod stretches out of the inner bottom of a mold groove to the upper side of the metal liquid level in the mold groove; a stirring blade shaft cannot extend into a gap at the bottom in the mold groove and bubbles can be ejected out, so that the condition that the bubbles appear at the bottom in the mold groove and the gap appears at the bottom of the cooled and molded booster pump stator gear ring is avoided; and meanwhile, the cooled and formed stator gear ring of the booster pump can be conveniently ejected and detached from the metallurgical mold, and the working efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of automotive power steering pump manufacturing technology, and in particular to a powder metallurgy production apparatus for automotive power steering pump stators and the stator thereof. Background Technology

[0002] Automotive power steering pumps are key components in automotive steering and braking systems that enhance handling ease and safety, contributing to improved vehicle performance and stability. They are mainly divided into two categories: power steering pumps and brake vacuum booster pumps. The former assists steering control through hydraulic or electric systems, while the latter utilizes vacuum pressure to amplify braking force.

[0003] However, in the existing powder metallurgy production equipment for automotive power steering pump stators, molten metal is poured directly into a mold and removed after natural cooling. This process easily generates air bubbles in the molten metal within the mold, resulting in hollow interiors in the formed automotive power steering pump stators and poor production quality. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art where molten metal is directly poured into a mold and removed after natural cooling. In this process, air bubbles are easily generated in the molten metal in the mold, resulting in hollow interiors in the formed automotive power pump stator and poor production quality. Therefore, this invention proposes a powder metallurgy production device for automotive power pump stators and the stator thereof.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A powder metallurgy production apparatus for automotive power steering pump stators includes a base plate, wherein a metallurgical mold is rotatably mounted through the middle of the upper end of the base plate.

[0007] It is also equipped with a centrifugal mechanism for centrifuging the molten metal inside the metallurgical mold. The centrifugal mechanism includes a transmission gear ring fixedly installed on the outside of the metallurgical mold. A gear meshes on the right side of the transmission gear ring. A motor is provided at the upper end of the gear. The upper end of the motor is fixedly installed on the base plate. A melting box is provided on the left side of the metallurgical mold. A hydraulic cylinder is fixedly installed at the left end of the melting box. The hydraulic cylinder is fixedly connected to the left end of the base plate.

[0008] It also includes an inner uniformity mechanism for keeping the molten metal inside the metallurgical mold uniform. The inner uniformity mechanism includes a strike rod that abuts against and fits against the front side of the metallurgical mold. A vertical plate is slidably installed through the middle of the strike rod. The vertical plate is fixedly installed on the front end of the base plate. A spring is sleeved on the outer side of the strike rod.

[0009] Preferably, the melting tank is provided with a stirring blade shaft on the lower side, and a square rod is slidably inserted into the upper end of the stirring blade shaft, and a rotating shaft is fixedly installed on the upper end of the square rod.

[0010] Preferably, a movable plate is movably mounted through the lower side of the rotating shaft, the upper end of the movable plate is slidably mounted on the bottom of the melting box, and a hydraulic cylinder is fixedly mounted on the left end of the movable plate, with the upper end of the hydraulic cylinder fixedly mounted on the melting box.

[0011] Preferably, a lifting plate is rotatably mounted on the upper end of the rotating shaft, and the lifting plate is slidably mounted on the middle part of the movable plate. A hydraulic cylinder three is fixedly mounted on the lower left side of the lifting plate, and the hydraulic cylinder three is fixedly mounted on the left end of the movable plate.

[0012] Preferably, a ball rod is fixedly installed on the inner side of the movable plate, and a spiral groove is opened on the outer side of the rotating shaft corresponding to the ball rod, and the ball rod is slidably installed in the spiral groove.

[0013] Preferably, a hollow disc is fixedly installed on the upper end of the stirring blade shaft, a spring is fixedly installed on the upper end of the hollow disc, the upper end of the spring is fixedly installed on the rotating shaft, and an elastic block is fixedly installed on the right end of the movable plate corresponding to the hollow disc.

[0014] Preferably, uniform push rods are slidably installed at equal intervals through the bottom of the metallurgical mold, and a ring is fixedly installed at the lower end of the uniform push rods, with a rotating rod rotatably installed at the middle of the lower end of the ring.

[0015] Preferably, a connecting plate is fixedly installed at the lower end of the rotating rod, a hydraulic cylinder four is fixedly installed at the lower end of the connecting plate, a bracket is fixedly installed at the lower end of the hydraulic cylinder four, the bracket is fixedly connected to the lower end of the base plate, and the right end of the connecting plate is slidably connected to the bracket.

[0016] Preferably, a limit block is slidably installed through the right side of the connecting plate, and a connecting rod is fixedly installed at the right end of the limit block. The right end of the connecting rod is slidably installed through the bracket.

[0017] Preferably, a protrusion plate is fixedly installed at the front end of the impact rod, and a push plate is provided on the lower side of the protrusion plate. The rear end of the push plate is fixedly connected to the connecting plate.

[0018] A stator of a powder metallurgy production device for an automotive power steering pump stator has a stator gear ring with twenty-nine teeth.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In this invention, the hydraulic cylinder is activated to push the melting tank upwards towards the metallurgical mold, so that the outlet pipe at the right end of the melting tank is directly above the mold groove of the metallurgical mold. The valve on the outlet pipe is opened, and the molten metal flows into the metallurgical mold below. At the same time, the motor is started to drive the gear to rotate, the gear to drive the transmission gear ring to rotate, and the transmission gear ring to drive the metallurgical mold to rotate on the base plate. This allows the molten metal to be evenly distributed in the metallurgical mold. The rotating metallurgical mold will generate centrifugal force in the mold groove, which makes it easier for the molten metal to be evenly filled and distributed on the outer inner wall of the mold groove. This reduces the voids in the mold groove, which would cause the poor quality of the booster pump stator gear ring, and ensures the production quality of the booster pump stator gear ring.

[0021] 2. In this invention, starting hydraulic cylinder two pushes the movable plate, lifting plate, rotating shaft, square rod, and stirring blade shaft to move synchronously to the right, so that the stirring blade shaft moves to the position directly above the mold groove of the metallurgical mold. Starting hydraulic cylinder three drives the lifting plate to move up and down reciprocally. The lifting plate also drives the rotating shaft, square rod, and stirring blade shaft to move up and down synchronously, so that the stirring blade shaft extends into the molten metal in the mold groove. When the rotating shaft moves up and down reciprocally, under the action of the ball rod and spiral groove, it will drive the rotating shaft, square rod, and stirring blade shaft to rotate on the lifting plate. The rotating stirring blade shaft moves up and down synchronously, and in conjunction with the rotation of the metallurgical mold, it is convenient to uniformly stir the molten metal in the mold groove. This helps to remove air bubbles in the molten metal in the mold groove, avoids voids in the stator gear ring of the booster pump after cooling and forming, and ensures the production quality of the booster pump stator gear ring.

[0022] 3. In this invention, hydraulic cylinder three drives the lifting plate, rotating shaft, square rod, stirring blade shaft, and hollow disc to rise to the top. The hollow disc is blocked by the elastic block. The hollow disc drives the stirring blade shaft to slide adaptively on the square rod. When the spring one is stretched, the elastic block will gradually deform adaptively as the pressure gradually increases until the elastic block and the hollow disc separate. Under the action of spring one, the hollow disc and the stirring blade shaft are driven to quickly reset. This helps to shake the molten metal adhering to the stirring blade shaft into the mold groove. It also helps to prevent a large amount of molten metal adhering to the stirring blade shaft from being difficult to clean after cooling, and prevents the molten metal that has not been completely cooled from dripping onto the seat plate and metallurgical mold, which would affect the processing quality. This saves labor and improves the processing quality of the power pump stator gear ring.

[0023] 4. In this invention, when the metallurgical mold rotates, it also drives the uniform ejector rod and the ring to rotate synchronously on the rotating rod. First, the connecting rod is pulled outward to drive the limiting block to separate from the connecting plate. Then, the hydraulic cylinder is activated to push the rotating rod, the ring, and the uniform ejector rod to move up and down synchronously in the metallurgical mold. The uniform ejector rod extends from the bottom of the mold groove to the upper side of the molten metal surface in the mold groove. This helps to push out the gaps and air bubbles that the stirring blade shaft cannot reach the bottom of the mold groove, thus avoiding the formation of air bubbles at the bottom of the mold groove, which would cause gaps at the bottom of the booster pump stator gear ring after cooling and forming. It also facilitates the removal and disassembly of the booster pump stator gear ring after cooling and forming from the metallurgical mold, resulting in high work efficiency.

[0024] 5. In this invention, after the uniform ejector rod has finished ejecting the air bubbles in the mold groove, the hydraulic cylinder four drives the uniform ejector rod to reset, and then the limiting block is re-inserted into the connecting plate. This helps to limit the connecting plate, rotating rod, ring and uniform ejector rod, and ensures that the upper end of the uniform ejector rod is always at the same horizontal line as the bottom of the mold groove, thereby avoiding the unevenness at the bottom of the mold groove when the hydraulic cylinder four fails.

[0025] 6. In this invention, when the connecting plate moves up and down, it also drives the push plate to move up and down synchronously. The push plate squeezes and pushes the protrusion plate, causing the protrusion plate to drive the impact rod forward on the vertical plate, compressing the second spring. At this time, the impact rod will separate from the outer surface of the metallurgical mold. When the push plate separates from the protrusion plate, under the action of the second spring, it pushes the impact rod and the protrusion plate to reset, impacting and vibrating the outer surface of the metallurgical mold. This helps to concentrate the molten metal inside the mold groove, which is concentrated on the outer side of the mold groove by centrifugal force, to flow to the inner side of the mold groove. This ensures that the molten metal inside the mold groove is evenly distributed in all corners of the mold groove, ensuring the production quality after the molten metal inside the mold groove cools and forms. At the same time, it can also quickly ensure the uniform distribution of molten metal, improving production efficiency. Attached Figure Description

[0026] Figure 1 This is a top-view three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the overall front left side of the present invention from a bottom-view perspective;

[0028] Figure 3 This is a schematic diagram of the overall front right side bottom view of the three-dimensional structure of the present invention;

[0029] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the connection between the melting tank, hydraulic cylinder 1, and stirring blade shaft;

[0030] Figure 5 For the present invention Figure 3Enlarged schematic diagram of the connection between the melting tank, hydraulic cylinder 1, and stirring blade shaft;

[0031] Figure 6 For the present invention Figure 1 Schematic diagram of the structure at point A;

[0032] Figure 7 For the present invention Figure 4 Schematic diagram of the structure at point B;

[0033] Figure 8 For the present invention Figure 5 Schematic diagram of the structure at point C;

[0034] Figure 9 For the present invention Figure 3 Schematic diagram of the structure at point D;

[0035] Figure 10 For the present invention Figure 3 Schematic diagram of the structure at point E;

[0036] Figure 11 This is a three-dimensional structural diagram of the stator gear ring in this invention;

[0037] In the diagram: 1. Seat plate; 2. Metallurgical mold;

[0038] Centrifugal Mechanism: 3. Transmission Gear Ring; 4. Gear; 5. Motor; 6. Melting Box; 7. Hydraulic Cylinder 1; 8. Stirring Blade Shaft; 9. Square Rod; 10. Rotating Shaft; 11. Movable Plate; 12. Hydraulic Cylinder 2; 13. Lifting Plate; 14. Hydraulic Cylinder 3; 15. Ball Rod; 16. Spiral Groove; 17. Hollow Disc; 18. Spring 1; 19. Elastic Block; 20. Uniform Push Rod; 21. Ring; 22. Rotating Rod; 23. Connecting Plate; 24. Hydraulic Cylinder 4; 25. Support; 26. Limiting Block; 27. Connecting Rod;

[0039] Inner uniformity mechanism: 28. Impact rod; 29. ​​Vertical plate; 30. Spring II; 31. Protrusion plate; 32. Push plate. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Reference Figures 1-11 A powder metallurgical production device for a power steering pump stator includes a base plate 1, with a metallurgical mold 2 rotatably mounted through the middle of the upper end of the base plate 1. It also includes a centrifugal mechanism for centrifuging the molten metal inside the metallurgical mold 2. The centrifugal mechanism includes a transmission gear ring 3 fixedly mounted on the outside of the metallurgical mold 2, a gear 4 meshing with the right side of the transmission gear ring 3, a motor 5 mounted on the upper end of the gear 4, and the upper end of the motor 5 fixedly mounted on the base plate 1. A melting box 6 is located on the left side of the metallurgical mold 2, and a hydraulic cylinder 7 is fixedly mounted on the left end of the melting box 6. The hydraulic cylinder 7 is fixedly connected to the left end of the base plate 1. Next, a stirring blade shaft 8 is provided on the lower side of the melting tank 6. A square rod 9 is slidably inserted into the upper end of the stirring blade shaft 8. A rotating shaft 10 is fixedly installed on the upper end of the square rod 9. A movable plate 11 is movably installed through the lower side of the rotating shaft 10. The upper end of the movable plate 11 is slidably installed on the bottom of the melting tank 6. A second hydraulic cylinder 12 is fixedly installed on the left end of the movable plate 11. The upper end of the second hydraulic cylinder 12 is fixedly installed on the melting tank 6. A lifting plate 13 is rotatably installed on the upper end of the rotating shaft 10. The lifting plate 13 is slidably installed through the middle of the movable plate 11. A third hydraulic cylinder 1 is fixedly installed on the lower left side of the lifting plate 13. 4. Hydraulic cylinder 3 14 is fixedly installed on the left end of movable plate 11. A ball rod 15 is fixedly installed on the inner side of movable plate 11. A spiral groove 16 is opened on the outer side of rotating shaft 10 corresponding to the ball rod 15. The ball rod 15 is slidably installed in the spiral groove 16. A hollow disc 17 is fixedly installed on the upper end of stirring blade shaft 8. A spring 18 is fixedly installed on the upper end of hollow disc 17. The upper end of spring 18 is fixedly installed on rotating shaft 10. An elastic block 19 is fixedly installed on the right end of movable plate 11 corresponding to hollow disc 17. A uniformly spaced sliding joint is installed through the bottom of metallurgical mold 2. A uniform top rod 20 is provided, with a ring 21 fixedly installed at its lower end. A rotating rod 22 is rotatably installed at the middle of the lower end of the ring 21. A connecting plate 23 is fixedly installed at the lower end of the rotating rod 22. A hydraulic cylinder 24 is fixedly installed at the lower end of the connecting plate 23. A bracket 25 is fixedly installed at the lower end of the hydraulic cylinder 24. The bracket 25 is fixedly connected to the lower end of the base plate 1, and the right end of the connecting plate 23 is slidably connected to the bracket 25. A limit block 26 is slidably installed through the upper right side of the connecting plate 23. A connecting rod 27 is fixedly installed at the right end of the limit block 26, and the right end of the connecting rod 27 is slidably installed through the bracket 25.

[0043] During operation, hydraulic cylinder 7 is activated to push the melting tank 6 upwards towards the metallurgical mold 2, positioning the outlet pipe at the right end of the melting tank 6 directly above the mold groove of the metallurgical mold 2. The valve on the outlet pipe is opened, allowing the molten metal to flow into the metallurgical mold 2 below. Simultaneously, motor 5 is activated, driving gear 4 to rotate. Gear 4 then drives the transmission gear ring 3 to rotate, which in turn rotates the metallurgical mold 2 on the base plate 1. This ensures that the molten metal is evenly distributed within the metallurgical mold 2. Furthermore, the rotating metallurgical mold 2 generates centrifugal force within the mold groove, facilitating the even filling and distribution of the molten metal on the outer and inner walls of the mold groove. This reduces voids in the mold groove, preventing issues like low-quality stator gear rings in the booster pump and ensuring the quality of the booster pump stator gear ring. For production quality, after the molten metal has completely flowed in, close the valve on the outlet pipe. Start hydraulic cylinder 2 (12) to push the movable plate 11, lifting plate 13, rotating shaft 10, square rod 9, and stirring blade shaft 8 to move synchronously to the right, so that the stirring blade shaft 8 moves directly above the mold groove of the metallurgical mold 2. Start hydraulic cylinder 3 (14) to drive the lifting plate 13 to move up and down reciprocally. The lifting plate 13 will also drive the rotating shaft 10, square rod 9, and stirring blade shaft 8 to move up and down synchronously, so that the stirring blade shaft 8 extends into the molten metal in the mold groove. When the rotating shaft 10 moves up and down, under the action of the ball rod 15 and the spiral groove 16, it will drive the rotating shaft 10, square rod 9, and stirring blade shaft 8 to rotate on the lifting plate 13. The rotating stirring blade shaft 8 moves up and down synchronously, and in coordination with... The rotation of the metallurgical mold 2 facilitates uniform stirring of the molten metal in the mold tank, helps to expel air bubbles from the molten metal, and prevents voids from appearing in the stator gear ring of the booster pump after cooling and forming, thus ensuring the production quality of the booster pump stator gear ring. After stirring, the hydraulic cylinder 14 drives the lifting plate 13, rotating shaft 10, square rod 9, stirring blade shaft 8, and hollow disc 17 to rise to the top. The hollow disc 17 is blocked by the elastic block 19, and the hollow disc 17 drives the stirring blade shaft 8 to slide adaptively on the square rod 9, stretching the spring 18. As the pressure gradually increases, the elastic block 19 will also gradually deform adaptively until the elastic block 19 and the hollow disc 17 separate from each other, under the spring 18. Under its action, the hollow disc 17 and the stirring blade shaft 8 are quickly reset, which helps to shake the molten metal adhering to the stirring blade shaft 8 into the mold groove. This prevents a large amount of molten metal adhering to the stirring blade shaft 8 from being difficult to clean after cooling, and also prevents incompletely cooled molten metal from dripping onto the seat plate 1 and the metallurgical mold 2, affecting the processing quality. This saves labor and improves the processing quality of the power pump stator gear ring. When the metallurgical mold 2 rotates, it also drives the uniform ejector rod 20 and the ring 21 to rotate synchronously on the rotating rod 22. First, it pulls the connecting rod 27 outward to drive the limit block 26 to separate from the connecting plate 23. Then, the hydraulic cylinder 24 is activated to push the rotating rod 22, the ring 21 and the uniform ejector rod 20 to move up and down synchronously in the metallurgical mold 2.The uniform ejector rod 20 extends from the bottom of the mold groove to the upper side of the molten metal surface. This helps to expel air bubbles and impellers from the gaps where the stirring blade shaft 8 cannot reach the bottom of the mold groove, thus preventing air bubbles from forming at the bottom of the mold groove and causing gaps at the bottom of the stator gear ring of the booster pump after cooling and forming. After the uniform ejector rod 20 has completely expelled the air bubbles from the mold groove, the hydraulic cylinder 24 drives the uniform ejector rod 20 to reset, and then the limiting block 26 is re-inserted into the connecting plate 23. This helps to limit the connecting plate 23, the rotating rod 22, the ring 21, and the uniform ejector rod 20, ensuring that the upper end of the uniform ejector rod 20 always remains at the same horizontal line as the bottom of the mold groove, thus preventing unevenness at the bottom of the mold groove in the event of failure of the hydraulic cylinder 24.

[0044] As an embodiment of the present invention, an inner uniformity mechanism is also provided for keeping the molten metal inside the metallurgical mold 2 uniform. The inner uniformity mechanism includes a striking rod 28 that abuts against and fits against the front side of the metallurgical mold 2. A vertical plate 29 is slidably installed through the middle of the striking rod 28. The vertical plate 29 is fixedly installed on the front end of the base plate 1. A spring 30 is sleeved on the outer side of the striking rod 28. A protrusion plate 31 is fixedly installed at the front end of the striking rod 28. A push plate 32 is provided on the lower side of the protrusion plate 31. The rear end of the push plate 32 is fixedly connected to the connecting plate 23.

[0045] During operation, when the connecting plate 23 moves up and down, it also drives the push plate 32 to move up and down synchronously. The push plate 32 squeezes and pushes the protrusion plate 31, causing the protrusion plate 31 to drive the impact rod 28 to move forward on the vertical plate 29, compressing the second spring 30. At this time, the impact rod 28 will separate from the outer surface of the metallurgical mold 2. When the push plate 32 separates from the protrusion plate 31, under the action of the second spring 30, the impact rod 28 and the protrusion plate 31 are pushed to reset, impacting and vibrating the outer surface of the metallurgical mold 2. This helps to concentrate the molten metal inside the mold groove, which is concentrated on the outside of the mold groove, to flow to the inside of the mold groove, thereby ensuring that the molten metal inside the mold groove is evenly distributed in all corners of the mold groove. This ensures the production quality after the molten metal inside the mold groove cools and forms. At the same time, it can also quickly ensure the uniform distribution of molten metal and improve production efficiency.

[0046] A stator of a powder metallurgy production device for an automotive power steering pump stator has a stator gear ring with twenty-nine teeth.

[0047] Working principle:

[0048] When using this invention, the hydraulic cylinder 7 is activated to push the melting tank 6 to the upper side of the metallurgical mold 2, so that the outlet pipe at the right end of the melting tank 6 is directly above the mold groove of the metallurgical mold 2. The valve on the outlet pipe is opened, and the molten metal flows into the metallurgical mold 2 below. At the same time, the motor 5 is activated to drive the gear 4 to rotate. The gear 4 drives the transmission gear ring 3 to rotate. The transmission gear ring 3 drives the metallurgical mold 2 to rotate on the base plate 1, so that the molten metal can be evenly distributed in the metallurgical mold 2. The rotating metallurgical mold 2 will generate centrifugal force in the mold groove, which makes it easier for the molten metal to be evenly filled and distributed on the outer inner wall of the mold groove. This reduces the gaps in the mold groove, which cause the problem of low quality of the booster pump stator gear ring, and ensures the production quality of the booster pump stator gear ring.

[0049] After the molten metal has flowed in, close the valve on the outlet pipe and start hydraulic cylinder 12 to push the movable plate 11, lifting plate 13, rotating shaft 10, square rod 9 and stirring blade shaft 8 to move synchronously to the right, so that the stirring blade shaft 8 moves to the position directly above the mold groove of the metallurgical mold 2. Start hydraulic cylinder 14 to drive the lifting plate 13 to move up and down reciprocally. The lifting plate 13 will also drive the rotating shaft 10, square rod 9 and stirring blade shaft 8 to move up and down reciprocally synchronously, so that the stirring blade shaft 8 extends into the molten metal in the mold groove. When the rotating shaft 10 moves up and down reciprocally, under the action of the ball rod 15 and spiral groove 16, it will drive the rotating shaft 10, square rod 9 and stirring blade shaft 8 to rotate on the lifting plate 13. The rotating stirring blade shaft 8 moves up and down synchronously, and cooperates with the rotation of the metallurgical mold 2, so as to make the molten metal in the mold groove evenly stirred. This helps to remove air bubbles in the molten metal in the mold groove, avoids the occurrence of voids in the stator gear ring of the booster pump after cooling and forming, and ensures the production quality of the booster pump stator gear ring.

[0050] After mixing, hydraulic cylinder 14 drives lifting plate 13, rotating shaft 10, square rod 9, stirring blade shaft 8, and hollow disc 17 to rise to the top. Hollow disc 17 is blocked by elastic block 19. Hollow disc 17 drives stirring blade shaft 8 to slide adaptively on square rod 9, stretching spring 18. As the pressure gradually increases, elastic block 19 will also gradually deform adaptively until elastic block 19 and hollow disc 17 separate. Under the action of spring 18, hollow disc 17 and stirring blade shaft 8 are quickly reset, which helps to shake the molten metal adhering to stirring blade shaft 8 into the mold groove. This prevents a large amount of molten metal adhering to stirring blade shaft 8 from being difficult to clean after cooling, and prevents incompletely cooled molten metal from dripping onto seat plate 1 and metallurgical mold 2, affecting the processing quality. This saves labor and improves the processing quality of the booster pump stator gear ring. When metallurgical mold 2 rotates, it also drives uniform push rod 20 and ring 21 to rotate synchronously on rotating rod 22. The rotation first pulls the connecting rod 27 outward, causing the limiting block 26 to separate from the connecting plate 23. Then, the hydraulic cylinder 24 is activated, pushing the rotating rod 22, the ring 21, and the uniform ejector rod 20 to move back and forth synchronously within the metallurgical mold 2. The uniform ejector rod 20 extends from the bottom of the mold groove to the upper side of the molten metal surface, which helps to push out the gaps and air bubbles that the stirring blade shaft 8 cannot reach at the bottom of the mold groove, thus preventing air bubbles from forming at the bottom of the mold groove and causing problems after cooling and forming. When a gap appears at the bottom of the stator gear ring of the power pump, after the uniform ejector rod 20 has finished ejecting the air bubbles in the mold groove, the hydraulic cylinder 24 drives the uniform ejector rod 20 to reset, and then the limiting block 26 is re-inserted into the connecting plate 23. This helps to limit the connecting plate 23, the rotating rod 22, the ring 21 and the uniform ejector rod 20, ensuring that the upper end of the uniform ejector rod 20 always maintains the same horizontal line as the bottom of the mold groove, thereby avoiding the unevenness at the bottom of the mold groove when the hydraulic cylinder 24 fails.

[0051] When the connecting plate 23 moves up and down, it also drives the push plate 32 to move up and down synchronously. The push plate 32 squeezes and pushes the protrusion plate 31, causing the protrusion plate 31 to drive the impact rod 28 to move forward on the vertical plate 29, compressing the second spring 30. At this time, the impact rod 28 will separate from the outer surface of the metallurgical mold 2. When the push plate 32 separates from the protrusion plate 31, under the action of the second spring 30, the impact rod 28 and the protrusion plate 31 are pushed to reset, impacting and vibrating the outer surface of the metallurgical mold 2. This helps to concentrate the molten metal inside the mold groove, which is concentrated on the outside of the mold groove, to flow to the inside of the mold groove, thereby ensuring that the molten metal inside the mold groove is evenly distributed in all corners of the mold groove, ensuring the production quality after the molten metal inside the mold groove cools and forms. At the same time, it can also quickly ensure the uniform distribution of molten metal, improving production efficiency.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A powder metallurgy production apparatus for an automotive power steering pump stator, comprising a base plate (1), characterized in that, A metallurgical mold (2) is rotatably mounted through the middle of the upper end of the seat plate (1); It is also provided with a centrifugal mechanism for centrifuging the molten metal in the metallurgical mold (2). The centrifugal mechanism includes a transmission gear ring (3) fixedly installed on the outside of the metallurgical mold (2). A gear (4) meshes on the right side of the transmission gear ring (3). A motor (5) is provided on the upper end of the gear (4). The upper end of the motor (5) is fixedly installed on the seat plate (1). A melting box (6) is provided on the left side of the metallurgical mold (2). A hydraulic cylinder (7) is fixedly installed on the left end of the melting box (6). The hydraulic cylinder (7) is fixedly connected to the left end of the seat plate (1). An inner uniformity mechanism is also provided to keep the molten metal inside the metallurgical mold (2) uniform. The inner uniformity mechanism includes a strike rod (28) that abuts against and fits on the front side of the metallurgical mold (2). A vertical plate (29) is slidably installed through the middle of the strike rod (28). The vertical plate (29) is fixedly installed on the front end of the seat plate (1). A spring (30) is sleeved on the outer side of the strike rod (28).

2. The powder metallurgy production apparatus for an automotive power steering pump stator according to claim 1, characterized in that, The melting box (6) is provided with a stirring blade shaft (8) on the lower side. A square rod (9) is slidably inserted into the upper end of the stirring blade shaft (8). A rotating shaft (10) is fixedly installed on the upper end of the square rod (9).

3. The powder metallurgy production apparatus for an automotive power steering pump stator according to claim 2, characterized in that, A movable plate (11) is movably installed through the lower side of the rotating shaft (10). The upper end of the movable plate (11) is slidably installed on the bottom of the melting box (6). A hydraulic cylinder (12) is fixedly installed on the left end of the movable plate (11). The upper end of the hydraulic cylinder (12) is fixedly installed on the melting box (6).

4. The powder metallurgy production apparatus for an automotive power steering pump stator according to claim 2, characterized in that, The upper end of the rotating shaft (10) is rotatably mounted with a lifting plate (13), which slides through the middle of the movable plate (11). The lower left side of the lifting plate (13) is fixedly mounted with a hydraulic cylinder three (14), which is fixedly mounted on the left end of the movable plate (11).

5. The powder metallurgy production apparatus for an automotive power steering pump stator according to claim 3, characterized in that, A ball rod (15) is fixedly installed on the inner side of the movable plate (11), and a spiral groove (16) is opened on the outer side of the rotating shaft (10) corresponding to the ball rod (15). The ball rod (15) is slidably installed in the spiral groove (16).

6. The powder metallurgy production apparatus for an automotive power steering pump stator according to claim 2, characterized in that, A hollow disc (17) is fixedly installed on the upper end of the stirring blade shaft (8), and a spring (18) is fixedly installed on the upper end of the hollow disc (17). The upper end of the spring (18) is fixedly installed on the rotating shaft (10), and an elastic block (19) is fixedly installed on the right end of the movable plate (11) corresponding to the hollow disc (17).

7. The powder metallurgy production apparatus for an automotive power steering pump stator according to claim 1, characterized in that, The metallurgical mold (2) has uniformly spaced push rods (20) that slide through the bottom. A ring (21) is fixedly installed at the lower end of the uniform push rods (20), and a rotating rod (22) is rotatably installed at the middle of the lower end of the ring (21).

8. The powder metallurgy production apparatus for an automotive power steering pump stator according to claim 7, characterized in that, A connecting plate (23) is fixedly installed at the lower end of the rotating rod (22), a hydraulic cylinder four (24) is fixedly installed at the lower end of the connecting plate (23), a bracket (25) is fixedly installed at the lower end of the hydraulic cylinder four (24), the bracket (25) is fixedly connected to the lower end of the seat plate (1), and the right end of the connecting plate (23) is slidably connected to the bracket (25).

9. A powder metallurgy production apparatus for an automotive power steering pump stator according to claim 8, characterized in that, A limiting block (26) is slidably installed through the upper right side of the connecting plate (23). A connecting rod (27) is fixedly installed at the right end of the limiting block (26). The right end of the connecting rod (27) is slidably installed through the bracket (25).

10. A powder metallurgy production apparatus for an automotive power steering pump stator according to claim 1, characterized in that, The front end of the impact rod (28) is fixedly installed with a protrusion plate (31), and a push plate (32) is provided on the lower side of the protrusion plate (31). The rear end of the push plate (32) is fixedly connected to the connecting plate (23).

Images