A powder metallurgy brake pad production apparatus

Abstract

This invention discloses a powder metallurgy brake pad production apparatus, belonging to the field of powder metallurgy technology. The apparatus includes a base plate, a worktable mounted on the top of the base plate, powder feeding mechanisms mounted on both sides of the worktable, a brake pad removal mechanism mounted at the top center of the base plate, and die ejection mechanisms fixedly mounted on both sides of the bottom of the worktable. A receiving hopper is fixedly connected to the center of the worktable, and a collection box is located at the rear end of the receiving hopper on the top of the base plate. A hydraulic drive mechanism is fixedly connected to the top of the worktable, and a multi-functional pusher mechanism is arranged between the top of the worktable and the hydraulic drive mechanism. This invention, by designing a multi-functional pusher mechanism, allows the hydraulic equipment to perform multiple functions, reducing the number of drive devices required and lowering the manufacturing cost of the apparatus while fulfilling multiple functions.

Description

Technical Field

[0001] This invention belongs to the field of powder metallurgy technology, and specifically relates to a powder metallurgy brake pad production device. Background Technology

[0002] Heavy-duty drones are special-purpose drones with large payload capacity. They are mainly multi-rotor or fixed-wing, with a core reinforced fuselage structure and power system. They can carry tens of kilograms to several tons of materials and are suitable for transportation, operation and other scenarios. The fuselage is made of high-strength composite materials, which are resistant to wind and turbulence. The power is equipped with a high-power motor or fuel engine, with outstanding endurance and load-bearing performance. They are widely used in logistics transportation, emergency rescue, engineering construction and other fields. Brake pads are a key component for the take-off and landing of heavy-duty drones. Because the impact force of the drone landing after being loaded is large, the brake pads must have high strength and wear resistance to quickly buffer and decelerate, avoid damage to the fuselage from turbulence. They are adapted to the landing gear of fixed-wing heavy-duty drones and use friction to precisely control speed during landing, ensuring smooth take-off and landing.

[0003] Most landing gear brake pads for heavy-duty drones are made of carbon-carbon or carbon-ceramic materials. Although carbon-carbon or carbon-ceramic brake pads can meet the braking requirements for drone take-off and landing, they are expensive to manufacture. Therefore, some brake pads are produced using powder metallurgy. While ensuring strength, powder metallurgy can also freely adjust the proportions of metal, lubricant, and friction components, thereby precisely controlling the material's coefficient of friction, wear resistance, thermal conductivity, and high-temperature stability.

[0004] In the process of manufacturing brake pads using powder metallurgy, existing powder presses are prone to the problem of a small amount of powder falling off when the brake pads, which have not been sintered, are removed from the mold and moved. At the same time, existing powder presses require multiple drive structures when filling powder, pushing material, and removing and compacting brake pads, making the overall equipment complex. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a powder metallurgy brake pad production device.

[0006] The technical solution adopted to solve the above technical problems is: to provide a powder metallurgy brake pad production device, including a device base plate, a worktable installed on the top of the device base plate, and powder feeding mechanisms installed on both sides of the worktable;

[0007] A brake pad removal mechanism is installed at the top center of the device base plate, and a die ejection mechanism is fixedly installed on both sides of the bottom of the workbench. A material receiving hopper is fixedly connected to the center of the workbench.

[0008] A collection box is provided at the rear end of the receiving hopper on the top of the device's base plate. A hydraulic drive mechanism is fixedly connected to the top of the workbench. A multi-functional push plate mechanism is provided between the top of the workbench and the hydraulic drive mechanism.

[0009] Furthermore, the powder feeding mechanism includes a fixed extension sleeve fixedly connected to one side of the bottom of the workbench, a hollow ejector sleeve slidably connected to the inner wall of the fixed extension sleeve, a first electric rod installed between the top inner surface of the hollow ejector sleeve and the workbench, and a powder storage hopper fixedly connected to one side of the fixed extension sleeve.

[0010] With the above technical solution, when in use, the powder storage hoppers in the powder feeding mechanisms on both sides are filled with the prepared powder. The powder will be automatically added to the top of the hollow ejector shell. Then, the first electric rod will push the powder out of the fixed extension shell until the top of the fixed extension shell is flush with the top of the worktable, thus realizing the ejection of a fixed amount of powder.

[0011] Furthermore, rectangular through holes corresponding to the fixed extension sleeve are provided on both sides of the workbench, and a rectangular through hole corresponding to the powder storage hopper is provided on one side of the fixed extension sleeve. The height of the hollow ejector sleeve is greater than the height of the fixed extension sleeve.

[0012] The above technical solution ensures that the powder can be ejected from the rectangular through hole to the top surface of the workbench. At the same time, the rectangular through hole on one side of the fixed extension sleeve facilitates automatic powder feeding, and the height of the through hole determines the amount of powder fed at one time. During the process of the hollow ejection sleeve top, the hollow ejection sleeve can block the feeding through hole from the side to prevent powder from spilling. Automatic feeding occurs after the hollow ejection sleeve is reset.

[0013] Furthermore, the brake pad removal mechanism includes two bottom guide rails and two top guide rails fixedly connected to the top of the device base plate. An extended electric rod is installed inside the rear end of the device base plate. A first roller assembly and a second roller assembly are respectively arranged between the two bottom guide rails and between the two top guide rails. A set of connecting frame assemblies is installed between the two sides of the first roller assembly and the second roller assembly. A transport plate is fixedly connected to the top of the two sets of connecting frame assemblies. A storage base is fixedly connected to the output end of the extended electric rod. A lifting sleeve is slidably connected to the inner wall of the storage base.

[0014] With the above technical solution, after the brake pads are pushed to the top of the transport plate, the extended electric rod pushes the storage bottom shell to move the lifting sleeve rod, which in turn moves the first roller assembly and the second roller assembly along the tracks of the bottom guide rail and the top guide rail. Finally, the two transport plates move to the front of the worktable, and the compacted brake pads can be taken out for subsequent sintering. The compacted brake pads only need to be ejected and gently pushed to be transferred outward, avoiding excessive contact that could cause the brake pad powder to fall off.

[0015] Furthermore, the workbench has a through hole at its center corresponding to the receiving hopper and the two conveyor plates, and the longitudinal section of the through hole is trapezoidal.

[0016] The above technical solution provides space for the receiving hopper and the two conveyor plates through the through hole, and the trapezoidal structure is to ensure that the compacted brake pads and the worktable do not come into contact during the movement of the conveyor plates.

[0017] Furthermore, the die ejection mechanism includes an H-shaped auxiliary plate installed between the device base plate and the bottom of the worktable, and a powder die module installed in a groove on the top of the worktable. A second electric rod is installed inside the H-shaped auxiliary plate, and a connecting plate is fixedly connected to the output end of the second electric rod. Multiple ejector rods are fixedly connected to the top of the connecting plate, and workpiece ejection plates are fixedly connected to the top of each of the multiple ejector rods.

[0018] Through the above technical solution, after the powder in the powder concave module is compacted by the hydraulic drive mechanism, the second electric rod pushes the connecting plate to rise, and then pushes the corresponding workpiece ejector plate to rise to the top of the worktable through multiple push rods, thus ejecting the compacted brake pads for subsequent pushing.

[0019] Furthermore, the hydraulic drive mechanism includes multiple limiting columns fixedly connected to the top of the workbench, a supporting top plate fixedly connected between the tops of the multiple limiting columns, a hydraulic device installed on the top of the supporting top plate, a lifting pressure plate fixedly connected to the output end of the hydraulic device, and powder punch pressure plates fixedly connected to both sides of the bottom of the lifting pressure plate.

[0020] Through the above technical solution, the hydraulic equipment pushes the lifting pressure plate and two powder punch pressure plates to descend, and the two powder punch pressure plates squeeze the powder in the groove of the powder die to compact it.

[0021] Furthermore, the multi-functional push plate mechanism includes two L-shaped limiting baffles fixedly connected to the front and rear ends of the top of the worktable and a double-axis connector fixedly connected to the center of the front and rear ends of the bottom of the hydraulic drive mechanism. A center gasket is fixedly connected to the center of each of the two L-shaped limiting baffles, and auxiliary springs are fixedly connected to both sides of each of the two center gaskets. A round shaft sliding block is slidably connected to the bottom of each of the two L-shaped limiting baffles. A double-hole connecting rod is rotatably connected between the double-axis connector and the two round shaft sliding blocks. A push-scraper integrated plate is fixedly connected between the two round shaft sliding blocks located on one side of the L-shaped limiting baffle.

[0022] Through the above technical solution, the hydraulic equipment in the hydraulic drive mechanism drives the lifting pressure plate to move up and down, which in turn drives multiple double-hole connecting rods through the two double-shaft connecting parts that rise and fall accordingly. This causes multiple round shaft sliding blocks to slide left and right at the bottom of the L-shaped limit baffle, thereby driving two push scraper integrated plates to slide between the two L-shaped limit baffles. When the two push scraper integrated plates move towards the center, they can complete the filling of powder, the recovery of excess powder, and the pushing of the ejected brake pads. Multiple functions can be completed through the drive of the hydraulic equipment, which greatly reduces the drive device of the device. At the same time, when the two double-shaft connecting parts rise and the multiple round shaft sliding blocks move towards the center, they will compress the auxiliary spring. During the subsequent reset process, the compressed auxiliary spring can provide additional thrust for the round shaft sliding blocks, thereby avoiding the problem that the round shaft sliding blocks are difficult to slide when the vertical double-hole connecting rod is subjected to large vertical pressure, and enabling the double-hole connecting rod to tilt quickly.

[0023] The beneficial effects of the present invention are as follows: (1) The present invention designs a multi-functional push plate mechanism, which drives the lifting pressure plate to move up and down through the hydraulic equipment in the hydraulic drive mechanism, thereby driving the two push scraper integrated plates to slide left and right. When the two push scraper integrated plates move towards the center, they can complete the filling of powder, the recycling of excess powder and the pushing of the ejected brake pads. Multiple functions can be completed through the drive of the hydraulic equipment, reducing the drive equipment of the device. While satisfying multiple functions, the manufacturing cost of the device is reduced. Multiple auxiliary springs are designed. In the subsequent reset process, the compressed auxiliary springs can provide additional thrust to the round shaft sliding block, thereby avoiding the tendency of the vertical double hole connecting rod to bear the load. The problem of the circular shaft sliding block being difficult to slide under large vertical pressure can be solved by making the double hole linkage rod tilt quickly; (2) By designing a brake pad removal mechanism, after the brake pad is pushed to the top of the transport plate, the extended electric rod pushes the storage bottom shell to move the lifting sleeve rod, thereby driving the first roller assembly and the second roller assembly to move along the trajectory of the bottom guide rail and the top guide rail. Finally, the two transport plates move to the front end of the workbench, and the compacted brake pad can be taken out for subsequent sintering work. The compacted brake pad can be transferred outward after being pushed out and gently pushed, reducing the contact between the brake pad and other equipment and the path of movement, and greatly avoiding the powder falling off the brake pad. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0026] Figure 3 This is a partial structural schematic diagram of the present invention;

[0027] Figure 4 This is a schematic diagram of the powder adding mechanism of the present invention;

[0028] Figure 5 This is a cross-sectional structural diagram of the powder adding mechanism of the present invention;

[0029] Figure 6 This is a three-dimensional structural diagram of the brake pad removal mechanism of the present invention;

[0030] Figure 7 This is a schematic diagram of the transport plate moving structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the ejection mechanism of the die of the present invention;

[0032] Figure 9 This is a schematic diagram of the receiving hopper structure of the present invention;

[0033] Figure 10This is a schematic diagram of the bottom structure of the workbench of the present invention;

[0034] Figure 11 This is a schematic diagram of the connection structure between the multifunctional push plate mechanism of the present invention and the worktable and hydraulic drive mechanism;

[0035] Figure 12 yes Figure 11 A schematic diagram of the bottom structure;

[0036] Figure 13 This is a schematic diagram of the two integrated push-scraper plates of the present invention separated;

[0037] Figure 14 yes Figure 13 A schematic diagram of the explosion structure.

[0038] Reference numerals: 1. Device base plate; 2. Workbench; 3. Powder feeding mechanism; 301. Fixed extension sleeve; 302. First electric rod; 303. Hollow ejection sleeve; 304. Powder storage hopper; 4. Brake pad removal mechanism; 401. Bottom guide rail frame; 402. Top guide rail frame; 403. Extended electric rod; 404. First roller assembly; 405. Second roller assembly; 406. Connecting frame assembly; 407. Transport plate; 408. Storage base shell; 409. Lifting sleeve; 5. Die ejection mechanism; 501. H-shaped auxiliary plate; 502. 503. Powder die module; 504. Second electric rod; 505. Connecting plate; 506. Push rod; 507. Workpiece ejection plate; 6. Receiving hopper; 7. Collection box; 8. Hydraulic drive mechanism; 801. Limiting column; 802. Supporting top plate; 803. Hydraulic equipment; 804. Lifting pressure plate; 805. Powder punch pressure plate; 9. Multifunctional push plate mechanism; 901. L-shaped limiting baffle; 902. Double shaft connector; 903. Center gasket; 904. Auxiliary spring; 905. Double hole connecting rod; 906. Round shaft sliding block; 907. Push and scraper integrated plate. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] like Figures 1-5As shown, this embodiment of a powder metallurgy brake pad production apparatus includes a base plate 1. A workbench 2 is mounted on the top of the base plate 1. Powder feeding mechanisms 3 are mounted on both sides of the workbench 2. Each powder feeding mechanism 3 includes a fixed extension sleeve 301 fixedly connected to one side of the bottom of the workbench 2. A hollow ejector sleeve 303 is slidably connected to the inner wall of the fixed extension sleeve 301. A first electric rod 302 is installed between the top inner surface of the hollow ejector sleeve 303 and the workbench 2. A powder storage hopper 304 is fixedly connected to one side of the fixed extension sleeve 301. In use, the powder storage hopper 304 in the powder feeding mechanisms 3 on both sides is filled with the prepared powder. The powder is automatically added to the top of the hollow ejector sleeve 303, and then the first electric rod 302 ejects the powder from the fixed extension sleeve 301 until it solidifies. The top of the fixed extension sleeve 301 is flush with the top of the workbench 2, enabling the ejection of a fixed amount of powder. Rectangular through holes corresponding to the fixed extension sleeve 301 are opened on both sides of the workbench 2. A rectangular through hole corresponding to the powder storage hopper 304 is opened on one side of the fixed extension sleeve 301. The height of the hollow ejection sleeve 303 is greater than the height of the fixed extension sleeve 301, ensuring that the powder can be ejected from the through hole to the top surface of the workbench 2 through the rectangular through hole. At the same time, the rectangular through hole on one side of the fixed extension sleeve 301 facilitates automatic powder feeding, and the height of the through hole determines the amount of powder fed at one time. During the process of the hollow ejection sleeve 303 being on top, the hollow ejection sleeve 303 can block the feeding through hole from the side to prevent powder from spilling. Automatic feeding occurs when the hollow ejection sleeve 303 is reset.

[0041] like Figures 1-7 and Figure 10As shown, a brake pad removal mechanism 4 is installed at the top center of the device base plate 1. The brake pad removal mechanism 4 includes two bottom guide rails 401 and two top guide rails 402 fixedly connected to the top of the device base plate 1. An extended electric rod 403 is installed inside the rear end of the device base plate 1. A first roller assembly 404 and a second roller assembly 405 are respectively arranged between the two bottom guide rails 401 and between the two top guide rails 402. A set of connecting frame assemblies 406 is installed between the two sides of the first roller assembly 404 and the second roller assembly 405. A transport plate 407 is fixedly connected to the top of the two sets of connecting frame assemblies 406. A storage shell 408 is fixedly connected to the output end of the extended electric rod 403. A lifting sleeve rod 409 is slidably connected to the inner wall of the storage shell 408. After the brake pad is pushed to the top of the transport plate 407, The extended electric rod 403 pushes the storage base 408 to move the lifting sleeve 409, which in turn moves the first roller assembly 404 and the second roller assembly 405 along the tracks of the bottom guide rail 401 and the top guide rail 402. Finally, the two transport plates 407 move to the front end of the workbench 2, where the compacted brake pads can be taken out for subsequent sintering. The compacted brake pads only need to be ejected and gently pushed to be transported outward, avoiding excessive contact that could cause the brake pad powder to fall off. The center of the workbench 2 has a through hole corresponding to the receiving hopper 6 and the two transport plates 407, and the longitudinal section of the through hole is a trapezoidal structure. The through hole provides space for the receiving hopper 6 and the two transport plates 407. The trapezoidal structure is to ensure that the compacted brake pads do not come into contact with the workbench 2 during the movement of the transport plates 407.

[0042] like Figures 1-9 As shown, both sides of the bottom of the workbench 2 are fixedly equipped with a die ejection mechanism 5. The die ejection mechanism 5 includes an H-shaped auxiliary plate 501 installed between the device base plate 1 and the bottom of the workbench 2 and a powder ejection module 502 installed in the groove at the top of the workbench 2. A second electric rod 503 is installed inside the H-shaped auxiliary plate 501. A connecting plate 504 is fixedly connected to the output end of the second electric rod 503. Multiple push rods 505 are fixedly connected to the top of the connecting plate 504. Each of the multiple push rods 505 is fixedly connected to a workpiece ejection plate 506. After the powder in the powder ejection module 502 is compacted by the hydraulic drive mechanism 8, the second electric rod 503 pushes the connecting plate 504 to rise, and then the multiple push rods 505 push the corresponding workpiece ejection plate 506 to rise to the same level as the top of the workbench 2, ejecting the compacted brake pads for subsequent pushing. A receiving hopper 6 is fixedly connected to the center of the workbench 2.

[0043] like Figures 1-11As shown, a collection box 7 is provided at the rear end of the receiving hopper 6 on the top of the device base plate 1. A hydraulic drive mechanism 8 is fixedly connected to the top of the workbench 2. The hydraulic drive mechanism 8 includes multiple limiting columns 801 fixedly connected to the top of the workbench 2. A supporting top plate 802 is fixedly connected between the tops of the multiple limiting columns 801. A hydraulic device 803 is installed on the top of the supporting top plate 802. A lifting pressure plate 804 is fixedly connected to the output end of the hydraulic device 803. Powder punch pressure plates 805 are fixedly connected to both sides of the bottom of the lifting pressure plate 804. The hydraulic device 803 pushes the lifting pressure plate 804 and the two powder punch pressure plates 805 to descend, and the powder in the groove of the powder concave module 502 is compacted by the two powder punch pressure plates 805.

[0044] like Figures 1-14 As shown, a multi-functional push plate mechanism 9 is provided between the top of the workbench 2 and the hydraulic drive mechanism 8. The multi-functional push plate mechanism 9 includes two L-shaped limiting baffles 901 fixedly connected to the front and rear ends of the top of the workbench 2 and a double-shaft connector 902 fixedly connected to the center of the front and rear ends of the bottom of the hydraulic drive mechanism 8. A center gasket 903 is fixedly connected to the center of each of the two L-shaped limiting baffles 901. An auxiliary spring 904 is fixedly connected to both sides of each of the two center gaskets 903. A round shaft sliding block 906 is slidably connected to the bottom of each of the two L-shaped limiting baffles 901. A double-hole connecting rod 905 is rotatably connected between the double-shaft connector 902 and the two round shaft sliding blocks 906. A push-scraper integrated plate 907 is fixedly connected between the two round shaft sliding blocks 906 located on one side of the L-shaped limiting baffles 901. The lifting plate 804 is driven up and down by the hydraulic device 803 in the hydraulic drive mechanism 8, and then the two double-shaft connectors 904 are raised and lowered accordingly. The shaft connector 902 drives multiple double-hole connecting rods 905, causing multiple round shaft sliding blocks 906 to slide left and right at the bottom of the L-shaped limit baffle 901. This, in turn, drives two push-scraper integrated plates 907 to slide between the two L-shaped limit baffles 901. When the two push-scraper integrated plates 907 move towards the center, they can complete the filling of powder, the recovery of excess powder, and the pushing of the ejected brake pads. Driven by the hydraulic device 803, multiple functions can be completed, greatly reducing the drive device of the device. At the same time, when the two double-shaft connectors 902 rise, the multiple round shaft sliding blocks 906 move towards the center, which will compress the auxiliary spring 904. During the subsequent reset process, the compressed auxiliary spring 904 can provide additional thrust for the round shaft sliding blocks 906, thereby avoiding the problem that the round shaft sliding blocks 906 are difficult to slide when the vertical double-hole connecting rod 905 is subjected to large vertical pressure, and enabling the double-hole connecting rod 905 to tilt quickly.

[0045] The working principle of this embodiment is as follows: During use, the powder storage hoppers 304 in the powder feeding mechanisms 3 on both sides are filled with the prepared powder, typically copper-based materials with added iron powder, graphite, etc. The powder is automatically added to the top of the hollow ejector housing 303. Then, the first electric rod 302 pushes the powder out of the fixed extension housing 301 until the top of the fixed extension housing 301 is flush with the top of the worktable 2. At this time, the hydraulic device 803 in the hydraulic drive mechanism 8 drives the lifting pressure plate 804 to move upward, thereby pulling the two double-shaft connecting parts 902 to drive multiple double-hole connecting rods 905, causing multiple round shaft sliding blocks 90... 6 slides at the bottom of the L-shaped limiting baffle 901 and moves together toward the center of the L-shaped limiting baffle 901, thereby driving the two push-scraper integrated plates 907 to move toward the center. The moving push-scraper integrated plates 907 pass through the top of the hollow ejector housing 303 and, together with the two L-shaped limiting baffles 901, completely push away the powder, thereby filling the groove at the top of the powder concave module 502 with powder. Excess powder will pass through the top of the transport plate 407 and be pushed into the interior of the receiving hopper 6, and finally return to the collection box 7 for collection. The hollow ejector housing 303 descends and resets, and the powder in the powder storage hopper 304 continues to enter the interior of the fixed extension housing 301.

[0046] Then, the hydraulic device 803 pushes the lifting plate 804 and the two powder punch plates 805 down. The two powder punch plates 805 squeeze the powder in the groove of the powder concave module 502 to compact it. After compaction, the hydraulic device 803 drives the powder punch plates 805 to rise a certain distance and then stops. At this time, the second electric rod 503 pushes the connecting plate 504 up, and then pushes the corresponding workpiece ejection plate 506 up to be flush with the top of the worktable 2 through multiple push rods 505, ejecting the compacted brake pads. At this time, the hydraulic device 803 continues to drive the lifting plate 804 up, and then pulls the push scraper plate 907 to push the protruding brake pads to the top of the transport plate 407. Then, the hydraulic device 803 drives the lifting plate 804 down, causing the two push scraper plates 907 to move to the side position. Subsequently, the powder feeding mechanism 3 continues to feed the material.

[0047] After the brake pads are pushed to the top of the transport plate 407, the extended electric rod 403 pushes the storage base 408 to move the lifting sleeve 409, which in turn moves the first roller assembly 404 and the second roller assembly 405 along the tracks of the bottom guide rail frame 401 and the top guide rail frame 402. Finally, the two transport plates 407 move to the front end of the workbench 2, and the compacted brake pads can be taken out for subsequent sintering work. After the transport plates 407 are reset, the material can be pushed by the push-scraper integrated plate 907 to achieve cyclic operation.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A powder metallurgy brake pad production apparatus, comprising an apparatus base plate (1), characterized in that: A workbench (2) is installed on the top of the device base plate (1), and powder feeding mechanisms (3) are installed on both sides of the workbench (2). A brake pad removal mechanism (4) is installed at the top center of the device base plate (1), and a die ejection mechanism (5) is fixedly installed on both sides of the bottom of the workbench (2). A material receiving hopper (6) is fixedly connected to the center of the workbench (2). The device base plate (1) has a collection box (7) at the rear end of the receiving hopper (6), and the top of the workbench (2) is fixedly connected to a hydraulic drive mechanism (8). A multi-functional push plate mechanism (9) is provided between the top of the workbench (2) and the hydraulic drive mechanism (8).

2. The powder metallurgy brake pad production apparatus according to claim 1, characterized in that, The powder feeding mechanism (3) includes a fixed extension sleeve (301) fixedly connected to one side of the bottom of the workbench (2). A hollow ejector sleeve (303) is slidably connected to the inner wall of the fixed extension sleeve (301). A first electric rod (302) is installed between the top inner surface of the hollow ejector sleeve (303) and the workbench (2). A powder storage hopper (304) is fixedly connected to one side of the fixed extension sleeve (301).

3. The powder metallurgy brake pad production apparatus according to claim 2, characterized in that, The workbench (2) has rectangular through holes on both sides corresponding to the fixed extension sleeve (301), and the fixed extension sleeve (301) has a rectangular through hole on one side corresponding to the powder storage hopper (304). The height of the hollow ejector sleeve (303) is greater than the height of the fixed extension sleeve (301).

4. The powder metallurgy brake pad production apparatus according to claim 1, characterized in that, The brake pad removal mechanism (4) includes two bottom guide rails (401) and two top guide rails (402) fixedly connected to the top of the device base plate (1). An extended electric rod (403) is installed inside the rear end of the device base plate (1). A first wheel assembly (404) and a second roller assembly (405) are respectively arranged between the two bottom guide rails (401) and between the two top guide rails (402). A set of connecting frame assemblies (406) is installed between the two sides of the first wheel assembly (404) and the second roller assembly (405). A transport plate (407) is fixedly connected to the top of the two sets of connecting frame assemblies (406). A storage shell (408) is fixedly connected to the output end of the extended electric rod (403). A lifting sleeve rod (409) is slidably connected to the inner wall of the storage shell (408).

5. The powder metallurgy brake pad production apparatus according to claim 4, characterized in that, The workbench (2) has a through hole at its center that corresponds to the receiving hopper (6) and the two transport plates (407), and the longitudinal section of the through hole is a trapezoidal structure.

6. The powder metallurgy brake pad production apparatus according to claim 1, characterized in that, The die ejection mechanism (5) includes an H-shaped auxiliary plate (501) installed between the bottom of the device base plate (1) and the bottom of the worktable (2) and a powder die module (502) installed in the groove at the top of the worktable (2). A second electric rod (503) is installed inside the H-shaped auxiliary plate (501). A connecting plate (504) is fixedly connected to the output end of the second electric rod (503). Multiple ejector rods (505) are fixedly connected to the top of the connecting plate (504). A workpiece ejection plate (506) is fixedly connected to the top of each of the multiple ejector rods (505).

7. The powder metallurgy brake pad production apparatus according to claim 1, characterized in that, The hydraulic drive mechanism (8) includes multiple limiting columns (801) fixedly connected to the top of the workbench (2). A support plate (802) is fixedly connected between the tops of the multiple limiting columns (801). A hydraulic device (803) is installed on the top of the support plate (802). A lifting plate (804) is fixedly connected to the output end of the hydraulic device (803). Powder punch plates (805) are fixedly connected to both sides of the bottom of the lifting plate (804).

8. The powder metallurgy brake pad production apparatus according to claim 1, characterized in that, The multi-functional push plate mechanism (9) includes two L-shaped limit baffles (901) fixedly connected to the front and rear ends of the top of the workbench (2) and a double-axis connector (902) fixedly connected to the center of the front and rear ends of the bottom of the hydraulic drive mechanism (8). A center gasket (903) is fixedly connected to the center of each of the two L-shaped limit baffles (901). An auxiliary spring (904) is fixedly connected to both sides of each of the two center gaskets (903). A round shaft sliding block (906) is slidably connected to the bottom of each of the two L-shaped limit baffles (901). A double-hole connecting rod (905) is rotatably connected between the double-axis connector (902) and the two round shaft sliding blocks (906). A push-scraper integrated plate (907) is fixedly connected between the two round shaft sliding blocks (906) located on one side of the L-shaped limit baffle (901) among the multiple round shaft sliding blocks (906).

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