Sensor gear ring powder metallurgy device

Abstract

The invention relates to the technical field of powder metallurgy, and particularly discloses a sensor gear ring powder metallurgy device which comprises a workbench, a discharging pipe, a material distribution bin, a material injection pipe, a mounting plate and a push-pull air cylinder. A lower die is installed on the top face of the workbench, a push-pull air cylinder is installed at one end of the workbench, and an installation plate is connected to the end of a piston rod of the push-pull air cylinder and moves above the lower die. A mounting box is mounted on the mounting plate, the distributing bin is rotatably mounted in the mounting box, the four discharging pipes are arranged above the lower mold cavity and are uniformly distributed around the circumference of the mold cavity, the distributing bin is communicated with the discharging pipes, and a driving mechanism for driving the distributing bin to drive the discharging pipes to move around the circumference of the mold cavity is mounted on the mounting box; a discharging opening of the material injection pipe communicates with the material distribution bin, and the material injection pipe is used for injecting metal powder into the material distribution bin. The method has the effect of reducing pollution of the metal powder to equipment and the environment.

Description

Technical Field

[0001] The present invention relates to the technical field of powder metallurgy, in particular to a powder metallurgy device for a sensor gear ring. Background Art

[0002] Powder metallurgy is a process that uses metal powder as raw material to produce metal products through pressing, sintering, and post-processing. The sensor ring gear is a key component in the automotive anti-lock braking system (ABS).

[0003] In the related art, in the manufacturing process of the sensor gear ring, it is also made by traditional gear powder metallurgy; the sensor gear ring is a thin ring structure, and at the same diameter, it requires very little metal powder compared to the gear; by designing the upper and lower dies of the sensor gear ring, the lower die is placed on the workbench so that the top surface of the lower die is flush with the workbench, and a material box slides on the top surface of the workbench, and the material box is connected to a powder spraying tube, and the powder spraying tube pours metal powder on the lower die and the top surface of the workbench, and the material box covers the top surface of the lower die, and part of the metal powder accumulates on the top of the lower die, and part enters the gear ring cavity of the lower die; by reciprocating sliding of the material box, the material box pushes the internal metal powder to fill the gear ring cavity, and finally retracts the material box, and the material box smoothes the metal powder in the gear ring cavity of the lower die; then the metal powder is pressed into shape by hydraulically driving the upper die, driving the upper die to rise, and the lower die pushes out the pressed gear ring, and the pressed gear ring can be obtained.

[0004] With regard to the above-mentioned related technologies, in order to fill the gear ring cavity, it is necessary to pour metal powder exceeding the cavity volume onto the upper mold, and then the material box is continuously pushed back and forth to make the metal powder fall into the cavity. Since the gear ring is a narrow and thin ring structure, the metal powder is difficult to push into the cavity and needs to be pushed back and forth many times; and after filling, too much metal powder will accumulate on the workbench. When the material box is retracted, some metal powder is still in the material box, but some metal powder remains on the workbench. Over time, a large amount of metal powder will remain on the workbench. If it is not cleaned in time, the metal powder will contaminate various components of the equipment and pollute the equipment and the environment. Summary of the Invention

[0005] In order to reduce the pollution of metal powder to equipment and the environment, the present application provides a sensor gear ring powder metallurgy device.

[0006] The present application provides a sensor gear ring powder metallurgy device that adopts the following technical solution: A sensor gear ring powder metallurgy device includes a workbench, a discharge pipe, a distribution bin, a filling pipe, a mounting plate, and a push-pull cylinder; a lower mold is installed on the top surface of the workbench, the push-pull cylinder is installed at one end of the workbench, the mounting plate is connected to the end of the piston rod of the push-pull cylinder, and the mounting plate is movable above the lower mold; a mounting box is installed on the mounting plate, the distribution bin is rotatably installed in the mounting box, four discharge pipes are provided, and the discharge pipes are arranged above the lower model cavity. The four discharge pipes are evenly distributed around the circumference of the cavity, the distribution bin is connected to the discharge pipe, and a driving mechanism for driving the distribution bin to drive the discharge pipe to move around the circumference of the cavity is installed on the mounting box; the discharge port of the filling pipe is connected to the distribution bin, and the filling pipe is used to inject metal powder into the distribution bin.

[0007] Optionally, the distribution bin includes a cross-shaped distribution box, a distribution pipe and a feed pipe; four distribution pipes are provided, and the four distribution pipes are connected to the edge of the bottom surface of the cross-shaped distribution box, and the bottom ends of the four distribution pipes are inclined outward, and the four distribution pipes correspond one to one to the four ends of the cross-shaped distribution box; the four distribution pipes are respectively connected to the top ends of the four discharge pipes; the bottom end of the feed pipe is connected to the top surface of the cross-shaped distribution box, and the end of the injection pipe rotates at the top end of the feed pipe.

[0008] Optionally, the bottom surface of the cross-shaped distribution box bulges toward the middle to form a pointed cone, and the inner wall of the bottom of the feed tube is connected to four guide parts, which are respectively connected to the top of the four corners inside the cross-shaped distribution box, and the top surface of the guide part is an inclined arc surface.

[0009] Optionally, a vertical pole is connected to the middle position of the bottom surface of the cross-shaped distributing box, and four support plates are connected to the bottom end of the vertical pole, and the four support plates are parallel to the top surface of the workbench; the ends of the four support plates away from the vertical pole are provided with strip grooves for the horizontal sliding of the discharge pipe; a wedge-shaped bin is installed on the top of the discharge pipe, and the wedge-shaped bin is arranged along the length direction of the support plate, and the bottom of the wedge-shaped bin is connected to the top of the discharge pipe, the top of the wedge-shaped bin is open, and the bottom end of the distribution pipe extends into the top of the wedge-shaped bin; the bottom surface of the wedge-shaped bin slides on the top surface of the support plate, and the circumference of the discharge pipe is connected to a limiting ring, and the limiting ring slides on the bottom surface of the support plate; a driving component for driving the discharge pipe to slide is installed on the support plate.

[0010] Optionally, the driving assembly includes a screw and a rotating seat, the screw passes through the strip groove from the end of the support plate, the screw is threadedly connected to the end of the support plate, the rotating seat is installed on the circumference of the discharge pipe, and the end of the screw is rotatably connected to the rotating seat.

[0011] Optionally, a connecting block is connected to the side of the support plate, and a sliding rod is slidingly arranged in the connecting block. The sliding rod and the discharge pipe are on the same arc, and the top of the sliding rod is connected to a slide plate, which is slidably connected to the connecting block; the bottom end of the sliding rod is connected to a connecting plate, and the bottom surface of the connecting plate is connected to a scraper, and the two ends of the scraper are bent toward the discharge pipe at an obtuse angle, and the scraper is arranged along the movement trajectory of the discharge pipe; a spring is provided on the sliding rod, one end of the spring is pressed against the connecting block, and the other end of the spring is pressed against the connecting plate; a lifting mechanism for driving the installation box to rise and fall is installed on the mounting plate.

[0012] Optionally, two symmetrically arranged positioning pins are connected to the circumferential surface of the bottom of the discharge pipe, and a rotating plate is rotatably connected to the two positioning pins, and one end of the two rotating plates is connected to an arc plate, and the inner arc surface of the arc plate fits the bottom surface of the discharge pipe; the end of the rotating plate away from the arc plate is connected to a connecting pin, and the end of the positioning pin is rotatably connected to the bending part of the bending plate, one end of the bending plate is connected to the connecting pin, and the bending plate is at an obtuse angle; two connecting rods are connected to the top surface of the connecting plate, the top of the connecting rod is bent toward the discharge pipe and the side of the end is connected to a rotating pin, and the end of the bending plate away from the connecting pin is provided with a waist-shaped hole for the movement of the rotating pin.

[0013] Optionally, the driving mechanism includes a motor, a worm and a worm wheel; the motor is installed on the side of the installation box, one end of the worm is connected to the output shaft of the motor, the worm penetrates into the installation box, and both ends of the worm are rotatably connected to the inner wall of the installation box. The worm wheel is sleeved on the circumference of the cross-shaped distribution box, and the worm and the worm wheel are meshed. The top and bottom ends of the cross-shaped distribution box are connected to the inner ring of the bearing, and the outer ring of the bearing is connected to the inner wall of the installation box.

[0014] Optionally, the lifting mechanism includes a U-shaped plate, a lifting cylinder and a push-pull plate, the two ends of the U-shaped plate are connected to the top surface of the mounting plate, the lifting cylinder is installed on the top surface of the U-shaped plate, the push-pull plate is connected to the side of the mounting box, and the bottom end of the piston rod of the lifting cylinder is connected to the top surface of the push-pull plate; the top surface of the mounting box is connected to a guide rod, which passes through the top surface of the U-shaped plate; the top surface of the mounting plate is provided with an opening for the mounting box and the motor to pass through.

[0015] Optionally, a protective frame is arranged around the mounting plate, the bottom surface of the protective frame is attached to the top surface of the workbench, limit plates are connected on both sides of the top surface of the protective frame, guide rods are connected on both sides of the top surface of the mounting plate, and the guide rods on both sides pass through the limit plates on both sides respectively; the workbench is provided with a discharge port between the push-pull cylinder and the lower mold, and the discharge port is connected to the top and bottom surfaces of the workbench.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. When injecting metal powder into the lower mold cavity, the push-pull cylinder drives the mounting plate to move above the lower mold, aligning the discharge pipe with the lower mold cavity. The injection pipe injects metal powder into the distribution bin, which is then distributed to the four discharge pipes. At the same time, the drive mechanism drives the distribution bin to rotate, which in turn drives the four discharge pipes to rotate together. The discharge pipes move in a circular motion around the cavity, discharging the metal powder directly into the cavity. The metal powder can fall directly into the cavity. The quantitative discharge of the discharge pipes can control the amount of powder accumulated in the lower mold, greatly reducing the powder accumulated on the top surface of the lower mold, thereby reducing the pollution of metal powder to the equipment and the environment. 2. When replacing a different ring gear mold, the ring gear size changes. By rotating the screw, the screw drives the discharge pipe to slide in the strip groove, and the discharge pipe drives the wedge-shaped bin to move. During the movement of the wedge-shaped bin, the bottom end of the distribution pipe is always inside the wedge-shaped bin, ensuring that the metal powder leaking from the distribution pipe can fall into the wedge-shaped bin, allowing the discharge pipe to discharge material uninterruptedly. At the same time, the position of the discharge pipe can be changed to adapt to molds with different ring gear diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the powder metallurgy device according to an embodiment of the present application; Figure 2 It is a schematic diagram of the partial structure of the powder metallurgy device according to the embodiment of the present application; Figure 3 Schematic diagram of the cross-sectional structure of the lower mold of the embodiment of the present application; Figure 4 This is a schematic structural diagram of a protective frame according to an embodiment of the present application; Figure 5 This is a schematic structural diagram of the lifting mechanism of an embodiment of the present application; Figure 6 This is a structural diagram of the material distribution silo in the embodiment of the present application; Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of part A; Figure 8 It is a structural diagram of the driving mechanism of an embodiment of the present application; Figure 9 This is a schematic diagram of the cross-sectional structure of the sub-silo in the embodiment of the present application; Figure 10 It is a schematic diagram of the cross-sectional structure of the connecting block of the embodiment of the present application.

[0018] Description of reference numerals: 01. Gear ring; 1. Workbench; 11. Push-pull cylinder; 111. Connecting frame; 12. Lower mold; 121. Pad; 122. Forming ring; 1221. First connecting ring; 123. Forming column; 1231. Second connecting ring; 124. Support ring; 125. Cavity; 13. Discharge port; 14. Mounting slot; 2. Distribution bin; 21. Cross-shaped distribution box; 211. Cone; 212. Guide; 213. Vertical pole; 22. Distribution pipe; 23. Feed pipe; 24. Support plate; 241. Strip groove; 3. Injection pipe; 4. Mounting plate; 401. Opening; 41. Mounting box; 42. Protective frame; 421. Limit plate; 43. Guide rod; 5. Discharge pipe; 51. Wedge bin; 52 , limit ring; 53, drive assembly; 531, screw; 532, rotating seat; 54, positioning pin; 55, rotating plate; 551, connecting pin; 56, arc plate; 57, bending plate; 571, waist-shaped hole; 6, driving mechanism; 61, motor; 62, worm; 63, worm gear; 64, bearing; 7, connecting block; 71, sliding rod; 72, sliding plate; 73, connecting plate; 731, connecting rod; 732, rotating pin; 74, scraper; 75, spring; 8, lifting mechanism; 81, U-shaped plate; 82, lifting cylinder; 83, push-pull plate; 84, guide rod; 9, vertical frame; 91, first hydraulic cylinder; 92, arc push plate; 10, support frame; 101, second hydraulic cylinder; 102, lower pressure ring. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-10 This application is described in further detail.

[0020] The embodiment of the present application discloses a powder metallurgy device for a sensor gear ring. Figure 1-10 The powder metallurgy device includes a workbench 1, a discharge pipe 5, a distribution bin 2, a filling pipe 3, a mounting plate 4, and a push-pull cylinder 11; a lower mold 12 is installed on the top surface of the workbench 1, and the push-pull cylinder 11 is installed at one end of the workbench 1. The mounting plate 4 is connected to the piston rod end of the push-pull cylinder 11, and the mounting plate 4 is movable above the lower mold 12; a mounting box 41 is installed on the mounting plate 4, and the distribution bin 2 is rotatably installed in the mounting box 41. There are four discharge pipes 5, and the discharge pipes 5 are arranged above the cavity 125 of the lower mold 12. The four discharge pipes 5 are evenly distributed around the circumference of the cavity 125. The distribution bin 2 is connected to the discharge pipe 5, and a driving mechanism 6 for driving the distribution bin 2 to drive the discharge pipe 5 to move around the cavity 125 is installed on the mounting box 41; the discharge port of the filling pipe 3 is connected to the distribution bin 2, and the filling pipe 3 is used to inject metal powder into the distribution bin 2.

[0021] When injecting metal powder into the cavity 125 of the lower mold 12, the mounting plate 4 is driven to move to the top of the lower mold 12 by the push-pull cylinder 11, so that the discharge pipe 5 is aligned with the cavity 125 of the lower mold 12, and the injection pipe 3 injects metal powder into the distribution bin 2, and the metal powder is distributed from the distribution bin 2 to the four discharge pipes 5; at the same time, the driving mechanism 6 drives the distribution bin 2 to rotate, and the distribution bin 2 drives the four discharge pipes 5 to rotate together, and the discharge pipe 5 moves in a circle around the cavity 125, and the discharge pipe 5 can directly discharge the metal powder into the cavity 125, and the metal powder can directly fall into the cavity 125. Through the quantitative discharge of the discharge pipe 5, the amount of powder accumulation in the lower mold 12 can be controlled, so that the powder accumulated on the top surface of the lower mold 12 is greatly reduced, thereby reducing the pollution of metal powder to equipment and the environment.

[0022] The distribution bin 2 includes a cross-shaped distribution box 21, a distribution pipe 22 and a feed pipe 23; there are four distribution pipes 22, and the four distribution pipes 22 are connected to the edge of the bottom surface of the cross-shaped distribution box 21. The bottom ends of the four distribution pipes 22 are tilted outward, and the four distribution pipes 22 correspond to the four ends of the cross-shaped distribution box 21 one by one; the four distribution pipes 22 are respectively connected to the top ends of the four discharge pipes 5; the bottom end of the feed pipe 23 is connected to the top surface of the cross-shaped distribution box 21, and the end of the injection pipe 3 rotates at the top end of the feed pipe 23.

[0023] When the injection pipe 3 injects metal powder into the feed pipe 23, the metal powder enters the cross-shaped distribution box 21, and the material is guided to the four ends through the cross-shaped distribution box 21. The distribution pipes 22 connected to the bottom of the four ends of the cross-shaped distribution box 21 discharge the metal powder to the discharge pipe 5. By using the distribution bin 2, the material can be discharged to the discharge pipe 5 evenly and quickly, so that the discharge pipe 5 can stably and uninterruptedly supply material to the cavity 125 during the rotation around the cavity 125.

[0024] The bottom surface of the cross-shaped material distribution box 21 bulges toward the middle to form a pointed cone 211. The bottom inner wall of the feed tube 23 is connected to four guide parts 212. The four guide parts 212 are respectively connected to the top of the four corners inside the cross-shaped material distribution box 21. The top surface of the guide part 212 is an inclined arc surface.

[0025] After the metal powder enters the feeding tube 23, the metal powder falls into the cross-shaped distribution box 21. Under the coordinated action of the guide part 212, the fallen powder falls to the four ends of the cross-shaped distribution box 21. At the same time, under the action of the pointed cone 211, the metal powder moves toward the end of the cross-shaped distribution box 21, making it easier for the metal powder to flow into the distribution tube 22.

[0026] A vertical rod 213 is connected to the middle position of the bottom surface of the cross-shaped distributing box 21, and four support plates 24 are connected to the bottom end of the vertical rod 213, and the four support plates 24 are parallel to the top surface of the workbench 1; the ends of the four support plates 24 away from the vertical rod 213 are provided with strip grooves 241 for the horizontal sliding of the discharge pipe 5; a wedge-shaped bin 51 is installed on the top of the discharge pipe 5, and the wedge-shaped bin 51 is arranged along the length direction of the support plate 24. The bottom of the wedge-shaped bin 51 is connected to the top of the discharge pipe 5, and the top of the wedge-shaped bin 51 is open, and the bottom end of the distribution pipe 22 extends into the top of the wedge-shaped bin 51; the bottom surface of the wedge-shaped bin 51 slides on the top surface of the support plate 24, and the peripheral surface of the discharge pipe 5 is connected to the limit ring 52, and the limit ring 52 slides on the bottom surface of the support plate 24; a driving component 53 for driving the discharge pipe 5 to slide is installed on the support plate 24.

[0027] The driving assembly 53 includes a screw 531 and a rotating seat 532. The screw 531 passes through the strip groove 241 from the end of the support plate 24. The screw 531 is threadedly connected to the end of the support plate 24. The rotating seat 532 is installed on the circumferential surface of the discharge pipe 5. The end of the screw 531 is rotatably connected to the rotating seat 532.

[0028] When a different gear ring 01 mold is replaced, the size of the gear ring 01 changes. By rotating the screw 531, the screw 531 drives the discharge pipe 5 to slide in the strip groove 241, and the discharge pipe 5 drives the wedge-shaped bin 51 to move. During the movement of the wedge-shaped bin 51, the bottom end of the distribution pipe 22 is always in the wedge-shaped bin 51, ensuring that the metal powder leaked from the distribution pipe 22 can fall into the wedge-shaped bin 51, so that the discharge pipe 5 can discharge material uninterruptedly. At the same time, the position of the discharge pipe 5 can also be changed to adapt to molds with different gear ring 01 diameters.

[0029] The side of the support plate 24 is connected to a connecting block 7, and a slide rod 71 is slidably arranged in the connecting block 7. The slide rod 71 and the discharge pipe 5 are on the same arc. The top of the slide rod 71 is connected to a slide plate 72, and the slide plate 72 is slidably connected to the connecting block 7; the bottom end of the slide rod 71 is connected to a connecting plate 73, and the bottom surface of the connecting plate 73 is connected to a scraper 74. The two ends of the scraper 74 are bent toward the discharge pipe 5 at an obtuse angle, and the scraper 74 is arranged along the movement trajectory of the discharge pipe 5; a spring 75 is sleeved on the slide rod 71, one end of the spring 75 is pressed against the connecting block 7, and the other end of the spring 75 is pressed against the connecting plate 73; a lifting mechanism 8 for driving the installation box 41 to rise and fall is installed on the mounting plate 4.

[0030] The drive installation box 41 descends, the installation box 41 drives the distribution bin 2 to descend, the distribution bin 2 drives the support plate 24 to descend, the support plate 24 drives the discharge pipe 5 and the connecting block 7 to descend, the connecting block 7 drives the slide bar 71 to descend together, the slide bar 71 drives the connecting plate 73 to descend, the connecting plate 73 drives the scraper 74 to descend, the scraper 74 contacts the top surface of the lower mold 12, the scraper 74 presses the spring 75 through the connecting plate 73, so that the scraper 74 maintains contact pressure with the top surface of the lower mold 12, and the bottom end of the discharge pipe 5 is close to the cavity 125; in the process of the discharge pipe 5 rotating around the cavity 125, the metal powder poured on the top surface of the lower mold 12 is scraped into the cavity 125 by the scraper 74. At the same time, after the metal powder in the cavity 125 is full, the scraper 74 can flatten the metal powder stacked in the cavity 125.

[0031] Two symmetrically arranged positioning pins 54 are connected to the circumferential surface of the bottom of the discharge pipe 5, and a rotating plate 55 is rotatably connected to the two positioning pins 54. One end of the two rotating plates 55 is connected to an arc-shaped plate 56, and the inner arc surface of the arc-shaped plate 56 fits the bottom surface of the discharge pipe 5; the end of the rotating plate 55 away from the arc-shaped plate 56 is connected to a connecting pin 551, and the end of the positioning pin 54 is rotatably connected to the bending part of the bent plate 57, one end of the bent plate 57 is connected to the connecting pin 551, and the bent plate 57 is at an obtuse angle; two connecting rods 731 are connected to the top surface of the connecting plate 73, and the top of the connecting rod 731 is bent toward the discharge pipe 5 and a rotating pin 732 is connected to the side of the end, and the end of the bending plate 57 away from the connecting pin 551 is provided with a waist-shaped hole 571 for the movement of the rotating pin 732.

[0032] When the discharge pipe 5 descends, the curved plate 56 is attached to the bottom surface of the discharge pipe 5 to prevent the leakage of metal powder; when the discharge pipe 5 descends, the scraper 74 is blocked by the lower mold 12, and the scraper 74 moves upward relative to the discharge pipe 5, and the scraper 74 drives the connecting plate 73 to rise, and the connecting plate 73 drives the connecting rod 731 to rise, and the connecting rod 731 drives the rotating pin 732 to rise, and the rotating pin 732 drives the bending plate 57 to rotate upward around the positioning pin 54, and the rotating pin 732 slides in the waist-shaped hole 571. The other end of the bending plate 57 drives the rotating plate 55 to rotate downward through the connecting pin 551, and the rotating plate 55 drives the curved plate 56 to rotate through the positioning pin 54. When the cam 73 is in the air, the cam 73 is in the air, and the cam 73 is in the air, so that the cam 73 is in the air. When the cam 73 is in the air, the cam 73 is in the air, and the cam 73 is in the air. When the cam 73 is in the air, the cam 73 is in the air, and the cam 73 is in the air, so that the cam 73 is in the air. When the cam 73 is in the air, the cam 73 is in the air, and the cam 73 is in the air, so that the cam 73 is in the air

[0033] The driving mechanism 6 includes a motor 61, a worm 62 and a worm wheel 63; the motor 61 is installed on the side of the installation box 41, one end of the worm 62 is connected to the output shaft of the motor 61, the worm 62 penetrates into the installation box 41, and both ends of the worm 62 are rotatably connected to the inner wall of the installation box 41, and the worm wheel 63 is sleeved on the circumference of the cross-shaped distribution box 21. The worm 62 and the worm wheel 63 are meshed, and the top and bottom ends of the cross-shaped distribution box 21 are connected to the inner ring of the bearing 64, and the outer ring of the bearing 64 is connected to the inner wall of the installation box 41.

[0034] The motor 61 drives the worm 62 to rotate, the worm 62 drives the worm wheel 63 to rotate, and the worm wheel 63 drives the cross-shaped material distribution box 21 to rotate through the bearing 64.

[0035] The lifting mechanism 8 includes a U-shaped plate 81, a lifting cylinder 82 and a push-pull plate 83. The two ends of the U-shaped plate 81 are connected to the top surface of the mounting plate 4, the lifting cylinder 82 is installed on the top surface of the U-shaped plate 81, the push-pull plate 83 is connected to the side of the mounting box 41, and the bottom end of the piston rod of the lifting cylinder 82 is connected to the top surface of the push-pull plate 83; the top surface of the mounting box 41 is connected to a guide rod 84, and the guide rod 84 passes through the top surface of the U-shaped plate 81; the top surface of the mounting plate 4 is provided with an opening 401 for the mounting box 41 and the motor 61 to pass through.

[0036] When the installation box 41 needs to be driven to move up and down, the lifting cylinder 82 drives the push-pull plate 83 to move up and down, and the push-pull plate 83 can drive the installation box 41 to move up and down, and the installation box 41 slides vertically through the guide rod 84.

[0037] The feed pipe 23 passes through the U-shaped plate 81 and can rotate inside the U-shaped plate 81 ; the piston rod of the push-pull cylinder 11 is connected to the top surface of the mounting plate 4 through the connecting frame 111 .

[0038] A protective frame 42 is arranged around the mounting plate 4, and the bottom surface of the protective frame 42 is attached to the top surface of the workbench 1. Limit plates 421 are connected to both sides of the top surface of the protective frame 42, and guide rods 43 are connected to both sides of the top surface of the mounting plate 4. The guide rods 43 on both sides pass through the limit plates 421 on both sides respectively; the workbench 1 is provided with a discharge port 13 between the push-pull cylinder 11 and the lower mold 12, and the discharge port 13 connects the top and bottom surfaces of the workbench 1.

[0039] After the cavity 125 is filled with metal powder, the push-pull cylinder 11 pulls back the mounting plate 4, and the mounting plate 4 drives the protective frame 42. The protective frame 42 scrapes away a small amount of metal powder from the workbench 1 through the bottom surface. When the protective frame 42 moves away from one side of the push-pull cylinder 11 to the discharge port 13, the metal powder falls into the discharge port 13, and the metal powder is collected through the discharge port 13 for reuse.

[0040] Both ends of the bottom surface of the workbench 1 are provided with uprights 9, which are used to support the workbench 1; the lower mold 12 includes a pad 121, a forming ring 122, a forming column 123 and a support ring 124; the pad 121 is installed on the top surface of the upright 9 located below the lower mold 12, and the workbench 1 is pressed against the top surface of the pad 121; a mounting groove 14 for mounting the forming ring 122 is provided in the workbench 1, and the bottom circumference of the forming ring 122 is connected with a first connecting ring 1221, and the support ring 124 is installed in the forming ring 122 and the outer circumference is in contact with the inner circumference of the forming ring 122; the forming column 123 is installed in the support ring 124 and the circumference is in contact with the inner circumference of the support ring 124, and the bottom circumference of the forming column 123 is in contact with the inner circumference of the support ring 124. It is connected to a second connecting ring 1231, the top surface of the second connecting ring 1231 is in contact with the bottom surface of the first connecting ring 1221, and the bottom surface of the support ring 124 is in contact with the top surface of the second connecting ring 1231; a first hydraulic cylinder 91 is installed in the vertical frame 9, and the end of the hydraulic rod of the first hydraulic cylinder 91 is connected to four arc-shaped push plates 92, the four arc-shaped push plates 92 are aligned with the support ring 124, and the four arc-shaped push plates 92 are evenly arranged around the circumference of the support ring 124, and the top end of the arc-shaped push plate 92 passes through the pad 121 and the second connecting ring 1231 and is connected to the bottom surface of the support ring 124; the cavity formed between the forming ring 122 and the forming column 123 is the cavity 125, and the outer diameter of the discharge pipe 5 is smaller than the width of the cavity 125.

[0041] A support frame 10 is placed across the workbench 1, and a second hydraulic cylinder 101 is installed in the middle of the support frame 10. The end of the hydraulic rod of the second hydraulic cylinder 101 is connected to a lower pressure ring 102, which is the upper mold. The lower pressure ring 102 is aligned with the support ring 124, and the inner and outer diameters of the lower pressure ring 102 and the support ring 124 are equal.

[0042] After the metal powder fills the cavity 125, the mounting plate 4 is moved away, and the second hydraulic cylinder 101 drives the lower pressure ring 102 to descend. The lower pressure ring 102 presses the metal powder in the cavity 125, and the forming ring 122 and the forming column 123 limit the size of the metal powder. The lower pressure ring 102 cooperates with the support ring 124 to press the gear ring 01 into shape. When the required pressure is reached, it can be pressed into shape; the second hydraulic cylinder 101 is driven to drive the lower pressure ring 102 to rise, and the first hydraulic cylinder 91 drives the arc-shaped push plate 92 to rise. The arc-shaped push plate 92 pushes the support ring 124 upward until the top surface of the support ring 124 is flush with the top surface of the workbench 1, and the formed gear ring 01 can be taken out.

[0043] The implementation principle of a powder metallurgy device for a sensor gear ring according to an embodiment of the present application is as follows: when metal powder is injected into the cavity 125 of the lower die 12, the mounting plate 4 is driven to move to the top of the lower die 12 by the push-pull cylinder 11, so that the discharge pipe 5 is aligned with the cavity 125 of the lower die 12, and the injection pipe 3 injects metal powder into the distribution bin 2, and the metal powder is distributed from the distribution bin 2 to the four discharge pipes 5; at the same time, the driving mechanism 6 drives the distribution bin 2 to rotate, and the distribution bin 2 drives the four discharge pipes 5 to rotate together, and the discharge pipe 5 moves in a circle around the cavity 125, and the discharge pipe 5 can directly discharge the metal powder into the cavity 125, and the metal powder can directly fall into the cavity 125. Through the quantitative discharge of the discharge pipe 5, the accumulation amount of powder in the lower die 12 can be controlled, so that the powder accumulated on the top surface of the lower die 12 is greatly reduced, thereby reducing the pollution of the metal powder to the equipment and the environment.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A powder metallurgy device for a sensor gear ring, characterized by: The invention comprises a workbench (1), a discharge pipe (5), a material distribution bin (2), a material injection pipe (3), a mounting plate (4), and a push-pull cylinder (11); a lower die (12) is mounted on the top surface of the workbench (1); the push-pull cylinder (11) is mounted on one end of the workbench (1); a mounting plate (4) is connected to the piston rod end of the push-pull cylinder (11); the mounting plate (4) is movable above the lower die (12); a mounting box (41) is mounted on the mounting plate (4); the material distribution bin (2) is rotatably mounted in the mounting box (41); and the material is discharged. Four pipes (5) are provided, the discharge pipes (5) are provided above the cavity (125) of the lower mold (12), the four discharge pipes (5) are evenly distributed around the circumference of the cavity (125), the distribution bin (2) is connected to the discharge pipes (5), and a driving mechanism (6) for driving the distribution bin (2) to drive the discharge pipes (5) to move around the circumference of the cavity (125) is installed on the installation box (41); the discharge port of the injection pipe (3) is connected to the distribution bin (2), and the injection pipe (3) is used to inject metal powder into the distribution bin (2).

2. A powder metallurgy device for a sensor gear ring according to claim 1, characterized in that: The material distribution bin (2) comprises a cross-shaped material distribution box (21), a material distribution pipe (22) and a feeding pipe (23); four material distribution pipes (22) are provided, and the four material distribution pipes (22) are connected to the edge portion of the bottom surface of the cross-shaped material distribution box (21), and the bottom ends of the four material distribution pipes (22) are tilted outward, and the four material distribution pipes (22) correspond to the four ends of the cross-shaped material distribution box (21) one by one; the four material distribution pipes (22) are respectively connected to the top ends of the four discharge pipes (5); the bottom end of the feeding pipe (23) is connected to the top surface of the cross-shaped material distribution box (21), and the end of the injection pipe (3) rotates on the top end of the feeding pipe (23).

3. The powder metallurgy device for a sensor gear ring according to claim 2, characterized in that: The bottom surface of the cross-shaped material distribution box (21) bulges toward the middle to form a pointed cone (211), and the inner wall of the bottom of the feeding pipe (23) is connected to four guide parts (212). The four guide parts (212) are respectively connected to the top of the four corners inside the cross-shaped material distribution box (21), and the top surface of the guide part (212) is an inclined arc surface.

4. The powder metallurgy device for a sensor gear ring according to claim 2, characterized in that: A vertical rod (213) is connected to the middle position of the bottom surface of the cross-shaped material distribution box (21), and four support plates (24) are connected to the bottom end of the vertical rod (213), and the four support plates (24) are parallel to the top surface of the workbench (1); the ends of the four support plates (24) away from the vertical rod (213) are provided with strip grooves (241) for the horizontal sliding of the discharge pipe (5); a wedge-shaped bin (51) is installed on the top of the discharge pipe (5), and the wedge-shaped bin (51) is arranged along the length direction of the support plate (24). The bottom of the wedge-shaped bin (51) is connected to the top of the discharge pipe (5), the top of the wedge-shaped bin (51) is open, and the bottom end of the distribution pipe (22) extends into the top of the wedge-shaped bin (51); the bottom surface of the wedge-shaped bin (51) slides on the top surface of the support plate (24), the circumference of the discharge pipe (5) is connected to a limiting ring (52), and the limiting ring (52) slides on the bottom surface of the support plate (24); a driving component (53) for driving the discharge pipe (5) to slide is installed on the support plate (24).

5. The powder metallurgy device for a sensor ring gear according to claim 4, characterized in that: The driving assembly (53) includes a screw (531) and a rotating seat (532). The screw (531) penetrates into the strip groove (241) from the end of the support plate (24). The screw (531) is threadedly connected to the end of the support plate (24). The rotating seat (532) is installed on the circumference of the discharge pipe (5), and the end of the screw (531) is rotatably connected to the rotating seat (532).

6. The powder metallurgy device for a sensor ring gear according to claim 4, characterized in that: The side of the support plate (24) is connected to a connecting block (7), a sliding rod (71) is slidably arranged in the connecting block (7), the sliding rod (71) and the discharge pipe (5) are on the same arc, the top of the sliding rod (71) is connected to a slide plate (72), and the slide plate (72) is slidably connected to the connecting block (7); the bottom end of the sliding rod (71) is connected to a connecting plate (73), the bottom surface of the connecting plate (73) is connected to a scraper (74), the two ends of the scraper (74) are bent toward the discharge pipe (5) at an obtuse angle, and the scraper (74) is arranged along the movement trajectory of the discharge pipe (5); a spring (75) is sleeved on the sliding rod (71), one end of the spring (75) is pressed against the connecting block (7), and the other end of the spring (75) is pressed against the connecting plate (73); a lifting mechanism (8) for driving the installation box (41) to rise and fall is installed on the installation plate (4).

7. The powder metallurgy device for a sensor ring gear according to claim 6, characterized in that: The bottom circumference of the discharge pipe (5) is connected to two symmetrically arranged positioning pins (54), and the two positioning pins (54) are rotatably connected to a rotating plate (55), one end of the two rotating plates (55) is connected to an arc plate (56), and the inner arc surface of the arc plate (56) is in contact with the bottom surface of the discharge pipe (5); the end of the rotating plate (55) away from the arc plate (56) is connected to a connecting pin (551), and the end of the positioning pin (54) is rotatably connected to the bending part of the bent plate (57), one end of the bent plate (57) is connected to the connecting pin (551), and the bent plate (57) is at an obtuse angle; the top surface of the connecting plate (73) is connected to two connecting rods (731), the top of the connecting rod (731) is bent toward the discharge pipe (5) and the side surface of the end is connected to a rotating pin (732), and the end of the bent plate (57) away from the connecting pin (551) is provided with a waist-shaped hole (571) for the rotating pin (732) to move.

8. The powder metallurgy device for a sensor ring gear according to claim 2, characterized in that: The driving mechanism (6) comprises a motor (61), a worm (62) and a worm wheel (63); the motor (61) is mounted on the side of the mounting box (41); one end of the worm (62) is connected to the output shaft of the motor (61); the worm (62) penetrates into the mounting box (41); both ends of the worm (62) are rotatably connected to the inner wall of the mounting box (41); the worm wheel (63) is sleeved on the circumference of the cross-shaped material distribution box (21); the worm (62) and the worm wheel (63) are meshed; the top and bottom ends of the cross-shaped material distribution box (21) are both connected to the inner ring of the bearing (64); the outer ring of the bearing (64) is connected to the inner wall of the mounting box (41).

9. The powder metallurgy device for a sensor ring gear according to claim 6, characterized in that: The lifting mechanism (8) comprises a U-shaped plate (81), a lifting cylinder (82) and a push-pull plate (83). The two ends of the U-shaped plate (81) are connected to the top surface of the mounting plate (4). The lifting cylinder (82) is mounted on the top surface of the U-shaped plate (81). The push-pull plate (83) is connected to the side surface of the mounting box (41). The bottom end of the piston rod of the lifting cylinder (82) is connected to the top surface of the push-pull plate (83). The top surface of the mounting box (41) is connected to a guide rod (84), which passes through the top surface of the U-shaped plate (81). The top surface of the mounting plate (4) is provided with an opening (401) for the mounting box (41) and the motor (61) to pass through.

10. The powder metallurgy device for a sensor ring gear according to claim 1, characterized in that: A protective frame (42) is provided around the mounting plate (4), the bottom surface of the protective frame (42) is attached to the top surface of the workbench (1), both sides of the top surface of the protective frame (42) are connected to limit plates (421), both sides of the top surface of the mounting plate (4) are connected to guide rods (43), and the guide rods (43) on both sides pass through the limit plates (421) on both sides respectively; the workbench (1) is provided with a discharge port (13) between the push-pull cylinder (11) and the lower die (12), and the discharge port (13) is connected to the top surface and the bottom surface of the workbench (1).

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