Powder metallurgy forming device of automobile gear and gear manufactured by powder metallurgy forming device

Abstract

The invention relates to the technical field of powder metallurgy, in particular to an automobile gear powder metallurgy forming device and a gear manufactured through the automobile gear powder metallurgy forming device, and the automobile gear powder metallurgy forming device comprises a base, a mold mechanism used for shaping powder, a bearing mechanism used for bearing the powder and a shifting mechanism used for adjusting the position of the mold mechanism. According to the device, the mold cavity is formed through the mold mechanism, the bearing mechanism is matched with the stirring mechanism, the mold mechanism is disassembled into the multiple thin cavities with the same thickness, the multiple thin cavities are filled with the metal powder through the powder feeding mechanism, and the powder in the multiple thin cavities is sequentially pressed through the pressing mechanism; the powder at the top and the bottom in the thin cavities is stressed more uniformly, the compactness of the powder is controlled by controlling the pressing distance of the pressing mechanism, then the stirring mechanism is matched with the bearing mechanism to combine the thin cavities into a thick cavity, and then the powder in the thick cavity is pressed to form a green body. And therefore, the powder is stressed more uniformly.

Description

Technical Field

[0001] The invention relates to the technical field of powder metallurgy, in particular to a powder metallurgy forming device for automobile gears and the gears made therefrom. Background Art

[0002] Powder metallurgy can be used to manufacture parts such as gears. By adding adhesives or lubricants to metal powders to improve the fluidity of the metal powders, the metal powders are then placed in a mold, and pressure is applied to the metal powders in the mold to pressurize the metal powders into green billets. The green billets are then heated and degreased, and the degreased green billets are sintered to obtain finished products. However, in the process of pressing metal powders into green billets, the pressing equipment generally used in powder metallurgy applies pressure to the metal powders in the mold from above, and the pressure is transmitted from the top to the bottom of the mold. Due to the fluidity of the powder and the design of the mold, the pressure distribution may be uneven, resulting in greater pressure on the top powder and higher density, while the density at the bottom is lower. Especially when the required manufactured parts are thicker, the difference is more obvious, which easily leads to higher compactness of the metal powder at the top. Excessive compactness can easily affect the escape of lubricants and adhesives inside the green billet during degreasing of the green billet, and after sintering, the density of the top and bottom of the product is also easily different due to different compactness, which is inconvenient. Summary of the invention

[0003] The object of the present invention is to provide a powder metallurgy forming device for automobile gears and the gears made therefrom, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A powder metallurgy forming device for automobile gears, comprising: A base, a mold mechanism for shaping powder, a supporting mechanism for receiving powder, a toggle mechanism for adjusting the position of the mold mechanism, a pressing mechanism for pressing the powder to shape it, and a powder feeding mechanism for feeding. A hydraulic cylinder is fixedly connected to the bottom of one end of the base. The mold mechanism is located above the base. The mold mechanism includes a plurality of vertically stacked plates, and a cavity is opened at the center of the top surface of the plurality of plates. The supporting mechanism is located below the plurality of plates. The supporting mechanism includes a plurality of bottom boxes arranged in sequence along the long side of the top surface of the base, and the plurality of bottom boxes are located on the top surface of the base. The top surface of the base is fixedly connected to a frame. The frame comprises a plurality of bottom boxes, and the plurality of bottom boxes are located inside the frame, the frame is provided with a plurality of slide grooves on opposite sides thereof, the plurality of slide grooves on the same side of the frame correspond to the plurality of bottom boxes one by one, the plurality of bottom boxes are fixedly connected with sliders on opposite sides thereof, the sliders are slidably engaged in adjacent slide grooves, the top surfaces of the plurality of bottom boxes are provided with sleeve holes, and shaft rods are slidably engaged in the plurality of sleeve holes, electric push rods are arranged inside the plurality of bottom boxes, and the movable ends of the plurality of electric push rods are fixedly connected to the bottom ends of adjacent shaft rods, the toggle mechanism is located inside the frame, the pressing mechanism is located below the toggle mechanism, and the powder feeding mechanism is located at one end of the frame.

[0005] Furthermore, two guide rods are provided on opposite sides of the frame, and multiple sleeves are provided on the outer sides of the two guide rods, wherein the inner side walls of the sleeves at one end of the two guide rods are fixedly sleeved with the outer side walls of adjacent guide rods, and a rotating plate is rotatably connected between the two sleeves at the other ends of the two guide rods, and the bottom surface of the rotating plate is fixedly connected to the movable end of the hydraulic cylinder, and except the sleeve at the other end of any guide rod, the other sleeves correspond to multiple bottom boxes one by one, and except the sleeve at the other end of any guide rod, the outer side walls of other sleeves are rotatably connected to one end of an adjacent slider, and except the sleeve at one end of any guide rod, the inner side walls of other sleeves are slidably sleeved with the outer side walls of adjacent guide rods, and the bottom surface of a bottom box located at one end inside the frame is fixedly connected to the top surface of the base.

[0006] Furthermore, the tops of two opposite sides of any base box are fixedly connected with L-shaped frames, one side of a long arm of any L-shaped frame is fixedly connected with a first cylinder, and the movable end of any first cylinder is fixedly connected with a stop plate.

[0007] Further, the toggle mechanism comprises: The 4th embodiment of the present invention is a kind of sliding plate, two screw rods and four sliding rods, the four corners of the top surface of the movable plate are provided with sliding holes, the two screw rods are rotatably connected between the two ends inside the frame body, one end of the movable plate is provided with two threaded holes, and the inner side walls of the two threaded holes are respectively screwed with the outer side walls of the two screw rods, the outer side walls of the four sliding rods are respectively slidably sleeved inside the four sliding holes, the outer side walls of the four sliding rods are respectively provided with two card grooves, and the inner side walls of the four sliding holes are fixedly connected with two convex strips, the two convex strips inside any sliding hole are slidably carded inside the two card grooves on the adjacent sliding rods, the four corners of the top surface of any plate body are provided with insertion holes, the four sliding rods are respectively slidably plugged into the four insertion holes on any plate body, the top ends of the four sliding rods are provided with square plates, and the top ends of the four sliding rods are fixedly connected to the bottom surface of the square plate.

[0008] Furthermore, one end of the two screw rods passes through the adjacent side walls of the frame and is fixedly sleeved with a pulley, and a transmission belt is rotatably sleeved between the outer side walls of the two pulleys, one end of the frame is fixedly connected to a drive box, and a drive motor is arranged inside the drive box, and the motor shaft of the drive motor is fixedly connected to the other end of a screw rod.

[0009] Furthermore, the top surface of the movable plate is fixedly connected with a second cylinder, and the movable end of the second cylinder is fixedly connected to the center of the bottom surface of the square plate.

[0010] Furthermore, the outer side walls of the four slide bars are slidably sleeved with a pressure ring, and the inner side walls of the four pressure rings are fixedly connected with two protruding rods, and the two protruding rods inside any pressure ring are slidably clamped inside two clamping grooves on the adjacent slide bars.

[0011] Further, the pressing mechanism comprises: Two rails, a card plate, a main cylinder, a connecting rod, a die, a plurality of L-shaped rods and a screw rod, the two rails are fixedly connected between the two ends inside the frame, the card plate is slidably connected between the two rails, and the card plate is located below the movable plate, the main cylinder is fixedly connected to the bottom surface of the card plate, the top end of the connecting rod is fixedly connected to the movable end of the main cylinder, the outer side wall of the connecting rod is slidably sleeved with a collar, and the top end of the connecting rod is fixedly connected to two sub-cylinders, the movable ends of the two sub-cylinders are fixedly connected to the top surface of the collar, the center of the top surface of the die is fixedly connected to the bottom end of the connecting rod, the outer side wall of the die is provided with a plurality of notches, and the top surface of the die is fixedly connected to a plurality of connecting frames, and the plurality of connecting frames are connected to the plurality of The notches correspond one to one, and the multiple L-shaped rods correspond one to one with the multiple notches. The multiple L-shaped rod short arms are movably inserted into the adjacent notches, and the multiple L-shaped rod long arms are slidably sleeved with the adjacent connecting frames. One end of the multiple L-shaped rod long arms is rotatably connected with a rotating rod, and one end of the multiple rotating rods is rotatably connected to the outer wall of the ring. The screw rod is rotatably connected between the two ends inside the frame. One end of the screw rod passes through the other end of the frame, and the other end of the frame is fixedly connected to a power box. A power motor is arranged inside the power box, and the motor shaft of the power motor is fixedly connected to one end of the screw rod. A screw-in through hole is opened at one end of the clamping plate, and the inner side wall of the screw-in through hole is screwed with the outer side wall of the screw rod.

[0012] Further, the powder feeding mechanism comprises: A shell, a square tube, a sleeve and two third cylinders, the shell is a bottom opening structure, and both ends of the shell are arc-shaped surfaces, one end of the frame is provided with a connecting port, and the shell is located inside the connecting port, the bottom surface of the square tube is fixedly connected to the top surface of the shell, the top surface of the shell is provided with a plurality of connecting pipe ports, and the plurality of connecting pipe ports are all connected to the inside of the square tube, the two opposite sides of the square tube are fixedly connected with guide rails, the sleeve is located inside the connecting port, and both ends of the top surface of the sleeve are provided with a plurality of guide wheels, and the two guide rails are located inside the sleeve Between the two ends of the top surface, an axle is fixedly sleeved inside any guide wheel, and the axle of any guide wheel is rotatably connected to the top surface of the casing, and the outer side wall of any guide wheel is slidably clamped inside the adjacent guide rail, the top surface of the casing is fixedly connected to a motor box, and a servo motor is arranged inside the motor box, the motor shaft of the servo motor is fixedly connected to the axle of the adjacent guide wheel, two third cylinders are fixedly connected to one end of the frame, support plates are fixedly connected to opposite sides of the casing, and the movable ends of the two third cylinders are respectively fixedly connected to the bottom surfaces of the two support plates.

[0013] A gear is formed by the powder metallurgy forming device.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The mold cavity is formed by using the mold mechanism. When manufacturing thicker gears, the mold mechanism is disassembled into multiple thinner cavities of equal thickness by using the supporting mechanism in conjunction with the toggle mechanism, and then the multiple thinner cavities are filled with metal powder by using the powder feeding mechanism, and then the powders in the multiple thinner cavities are pressed in sequence by the pressing mechanism, so that the pressure on the top and bottom of the thinner cavity is more uniform, and the pressing distance of the pressing mechanism is controlled to control the compactness of the powder, and then the multiple thinner cavities are merged into a thicker cavity by the toggle mechanism in conjunction with the supporting mechanism, and then the powder in the thicker cavity is pressed to form a green body, so that the pressure on the powder is more uniform, which is convenient for controlling the density of the gear and the compactness of the green body.

[0015] 2. Start the hydraulic cylinder to drive the rotating plate upward, so that the rotating plate pushes the two guide rods to tilt, so that the multiple bottom boxes are driven by the two guide rods to form a stepped structure, and then start the second cylinder to move the multiple sliding rods downward and insert them into the sockets on the multiple plate bodies, and then start the driving motor to drive the two screw rods to rotate, drive the moving plate to move, so that the sliding rod drives the multiple plate bodies to move synchronously. When the plate body moves to the drop between two adjacent bottom boxes and is abutted by the side wall of the bottom box, start the second cylinder to move upward, so that the sliding rod is separated from the abutted plate body, until there are an equal number of plate bodies on each bottom box, and start the first cylinder, so that the plate body on the bottom box is clamped and fixed by the two adjacent abutting plates, and then start the hydraulic cylinder to drive the multiple bottom boxes to restore parallelism, so that the multiple plate bodies on each bottom box are parallel; 3. Start the servo motor to drive the shell into the frame, and then start the two third cylinders to drive the shell to cover the cavity formed by the upper plates of the multiple bottom boxes, and then use the automatic feeding hopper to put the powder into the cavity, and then start the servo motor to drive the shell to move, so that the shell can scrape off the powder exposed on the plate, which is convenient for the pressing mechanism to press down; 4. Start the main cylinder to drive the die to press down, so that the die presses the cavity formed by the plate on the bottom box. Since the cavity is thin, the powder in the cavity is under pressure more evenly, and the pressure of the die is controlled to control the compactness of the powder in the thinner cavity. After the powder is pressed down, the effect of the plate above the top surface of the powder disappears, and then the two auxiliary cylinders are started to drive multiple L-shaped rods to move synchronously to resist the ineffective plate. Then start the main cylinder to allow the die to take the ineffective plate away from the top of the bottom box, and then press the powder in multiple thinner cavities in turn, and then use the toggle mechanism to cooperate with the supporting mechanism to merge multiple thinner cavities into a thicker cavity, and then use the die to press the thicker cavity as a whole, so that the powder in multiple thinner cavities is compressed and combined to form a green body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the supporting mechanism structure in the present invention; Figure 3 It is a schematic diagram of the supporting mechanism and the mold mechanism structure of the present invention; Figure 4 It is a schematic diagram of the internal cross-sectional structure of the bottom box in the present invention; Figure 5 It is a schematic diagram of the structure of the toggle mechanism in the present invention; Figure 6 It is a schematic diagram of the structure of the sliding rod, the pressure ring and the moving plate in the present invention; Figure 7 It is a schematic diagram of the structure of the pressing mechanism in the present invention; Figure 8 It is an exploded diagram of the structure of the pressing mechanism in the present invention; Fig. 9 It is an exploded diagram of the feeding mechanism structure in the present invention; Fig.10 It is a schematic diagram of the gear structure in the present invention.

[0017] In the figure: 100, base; 110, hydraulic cylinder; 200, mold mechanism; 210, plate; 211, socket; 300, supporting mechanism; 310, bottom box; 311, slider; 320, shaft; 330, frame; 331, slide groove; 332, connecting port; 340, guide rod; 341, sleeve; 342, rotating plate; 350, first cylinder; 351, abutment plate; 400, toggle mechanism; 410, moving plate; 411, slide hole; 420, screw; 421, driving box; 430, slide rod; 431, slot; 440, Pressing ring; 441, convex rod; 450, second cylinder; 500, pressing mechanism; 510, clamping rail; 520, clamping plate; 530, main cylinder; 540, connecting rod; 541, sleeve ring; 542, auxiliary cylinder; 550, die; 551, notch; 552, connecting frame; 560, L-shaped rod; 561, rotating rod; 570, screw rod; 571, power box; 600, powder feeding mechanism; 610, shell; 620, square tube; 621, guide rail; 630, sleeve; 631, guide wheel; 632, motor box; 640, third cylinder. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-10 In an embodiment of the present invention, a powder metallurgy forming device for automobile gears comprises: A base 100, a mold mechanism 200 for shaping powder, a supporting mechanism 300 for receiving powder, a toggle mechanism 400 for adjusting the position of the mold mechanism 200, a pressing mechanism 500 for pressing the powder to shape it, and a powder feeding mechanism 600 for feeding. A hydraulic cylinder 110 is fixedly connected to the bottom of one end of the base 100. The mold mechanism 200 is located above the base 100. The mold mechanism 200 includes a plurality of vertically stacked plates 210, and a cavity is opened at the center of the top surface of the plurality of plates 210. The supporting mechanism 300 is located below the plurality of plates 210. The supporting mechanism 300 includes a plurality of bottom boxes 310 arranged in sequence along the long side of the top surface of the base 100, and the plurality of bottom boxes 310 are all located on the top surface of the base 100. The top surface of the base 100 is fixedly connected A frame 330 is provided, and multiple bottom boxes 310 are all located inside the frame 330, multiple slide grooves 331 are provided on opposite sides of the frame 330, and the multiple slide grooves 331 on the same side of the frame 330 correspond one to one to the multiple bottom boxes 310, and sliders 311 are fixedly connected on opposite sides of the multiple bottom boxes 310, and the sliders 311 are slidably engaged in adjacent slide grooves 331, and sleeve holes are provided on the top surfaces of the multiple bottom boxes 310, and shaft rods 320 are slidably engaged inside the multiple sleeve holes, and electric push rods are arranged inside the multiple bottom boxes 310, and the movable ends of the multiple electric push rods are fixedly connected to the bottom ends of adjacent shaft rods 320, the toggle mechanism 400 is located inside the frame 330, the pressing mechanism 500 is located below the toggle mechanism 400, and the powder feeding mechanism 600 is located at one end of the frame 330.

[0020] Specifically, a mold cavity is formed by using the cavities on a plurality of vertically stacked plates 210, and the supporting mechanism 300 is used to support the bottom of the mold cavity to close the bottom of the cavity, and then metal powder is placed in the cavity and pressed down by the pressing mechanism 500 to form the powder in the cavity into a green body. When thicker gears are produced, the plurality of plates 210 can be divided into a plurality of parts by the toggle mechanism 400, and each part of the plates 210 is vertically stacked to form a thinner mold cavity, and each part of the thinner cavity is located on a different bottom box 310, and then the metal powder is fed into each bottom box 310 by the powder feeding mechanism 600. The thinner cavities are stacked vertically into a thicker cavity by the shifting mechanism 400, and the thicker cavity is pressed again by the pressing mechanism 500, so that the metal powder in each thinner cavity is pressed for the first time and is initially formed. The metal powder in each thinner cavity is pressed more evenly. Then, the plurality of thinner cavities are stacked vertically into a thicker cavity by the shifting mechanism 400, and the thicker cavity is pressed again by the pressing mechanism 500, so that the metal powder in each thinner cavity that has been pressed for the first time is pressed again and combined together, so that the pressure on the powder in each part of the pressed green body is more uniform, and the density of the manufactured gear is more uniform. Embodiment 1

[0021] like Figure 2-3As shown, in this embodiment, two guide rods 340 are provided on opposite sides of the frame 330, and multiple sleeves 341 are provided on the outer side walls of the two guide rods 340, wherein the inner side walls of the sleeves 341 located at one end of the two guide rods 340 are fixedly sleeved with the outer side walls of the adjacent guide rods 340, and a rotating plate 342 is rotatably connected between the two sleeves 341 located at the other ends of the two guide rods 340, and the bottom surface of the rotating plate 342 is fixedly connected to the movable end of the hydraulic cylinder 110, and except for the sleeve 341 located at the other end of any guide rod 340, the other sleeves 341 correspond to the multiple bottom boxes 310 one by one, and any guide rod 340 Except for the sleeve 341 located at the other end of the rod 340, the outer side walls of the other sleeves 341 are rotatably connected to one end of the adjacent slider 311. Except for the sleeve 341 located at one end of any guide rod 340, the inner side walls of the other sleeves 341 are slidably connected to the outer side walls of the adjacent guide rod 340. The bottom surface of a bottom box 310 located at one end inside the frame 330 is fixedly connected to the top surface of the base 100. The tops of the opposite sides of any bottom box 310 are fixedly connected to L-shaped frames, one side of the long arm of any L-shaped frame is fixedly connected to the first cylinder 350, and the movable end of any first cylinder 350 is fixedly connected to a stop plate 351.

[0022] In this embodiment, in the initial state, the two guide rods 340 are in a straight state, and the multiple bottom boxes 310 are in a parallel state. The inner wall of the sleeve 341 at one end of any guide rod 340 is fixedly sleeved with the outer wall of the guide rod 340, and the inner walls of the other sleeves 341 are slidably sleeved with the outer wall of the guide rod 340. When it is necessary to divide the thick cavity formed by the multiple plate bodies 210 into multiple thinner cavities, the hydraulic cylinder 110 is started to drive the rotating plate 342 to move up. Since the bottom box 310 at one end of the frame body 330 is fixedly connected to the base 100, the two guide rods 3 When the other end of the guide rod 340 is lifted by the rotating plate 342, one end of the two guide rods 340 will rotate around the sleeve 341 at one end of itself, so that the two guide rods 340 are tilted, and other bottom boxes 310 are synchronously lifted by relying on other sleeves 341 on the guide rod 340, so that multiple bottom boxes 310 form a stepped structure, so that the bottom box 310 closest to the other end of the guide rod 340 is lifted the highest, and the height difference between each bottom box 310 is equal, and then the multiple vertically stacked plate bodies 210 are moved by the toggle mechanism 400, and the plate bodies 210 pass through two adjacent When the bottom boxes 310 are between each other, the same number of plates 210 will be blocked by the side wall of the bottom box 310 located at a higher position between the two adjacent bottom boxes 310 and stop moving, so that the number of plates 210 distributed on each bottom box 310 is equal, and then the hydraulic cylinder 110 is started to reset, so that the two guide rods 340 drive the multiple bottom boxes 310 to restore the initial state, and then the user can start the electric push rod in the bottom box 310 to drive the adjacent shaft rod 320 to move, so that the top of the shaft rod 320 is parallel to the top surface of the uppermost plate 210, so that when the metal powder is filled into the thinner cavity, the shaft rod An axial hole of the initially pressed green body can be formed at 320, and when multiple thinner cavities are merged into a thicker cavity, the height of the shaft rod 320 can be controlled by starting the electric push rod, so that the shaft rod 320 in the thicker cavity can form an axial hole in the pressed green body during pressing, and after the plate body 210 moves onto the bottom box 310, multiple first cylinders 350 can be started to drive the adjacent abutment plates 351 to move, so that the multiple plate bodies 210 on the bottom box 310 can be clamped and fixed by two adjacent abutment plates 351, thereby preventing the plate body 210 from moving when the pressing mechanism 500 is pressed.

[0023] like Figure 5-6 As shown, in this embodiment, the toggle mechanism 400 includes: The movable plate 410, two screw rods 420 and four slide rods 430, the top surface of the movable plate 410 is provided with slide holes 411 at the four corners, the two screw rods 420 are rotatably connected between the two ends of the frame 330, one end of the movable plate 410 is provided with two threaded holes, and the inner side walls of the two threaded holes are respectively screwed with the outer side walls of the two screw rods 420, the outer side walls of the four slide rods 430 are respectively slidably sleeved in the four slide holes 411, and the outer side walls of the four slide rods 430 are provided with two card holes Groove 431, and the inner walls of the four sliding holes 411 are fixedly connected with two convex strips, the two convex strips inside any sliding hole 411 are slidably engaged with the two card grooves 431 on the adjacent sliding rod 430, and the four corners of the top surface of any plate body 210 are provided with plug holes 211, and the four sliding rods 430 are respectively slidably engaged with the four plug holes 211 on any plate body 210, and the tops of the four sliding rods 430 are provided with square plates, and the tops of the four sliding rods 430 are fixedly connected with the bottom surface of the square plates.

[0024] In the specific implementation, in the initial state, the multiple vertically stacked plate bodies 210 are all located above a bottom box 310. After the hydraulic cylinder 110 is started to form a stepped structure of the multiple bottom boxes 310, a bottom box 310 is located at the lowest position among the multiple bottom boxes 310. The user can slide the square plate to drive the four slide bars 430 to synchronously insert into the sockets 211 on the multiple vertically stacked plate bodies 210, and then drive the moving plate 410 to move by rotating the two screws 420, so that the slide bars 430 drive the multiple plate bodies 210 to move toward the bottom box 310 located at the top. During the movement, a bottom box 310 is located at the lowest position among the multiple bottom boxes 310. The upper part of the plate 210 of the box 310 will be abutted by the side wall of the adjacent bottom box 310, and then the sliding bar 430 will be disengaged from the insertion hole 211 on the abutted plate 210 by sliding up, driving the other plate 210 to continue to move, and then when the other moving plate 210 abuts against the side wall of the bottom box 310 at a higher position, the sliding bar 430 will be continued to slide up to make the abutting plate 210 disengage from the sliding bar 430 until a plate 210 abuts against the other end of the frame 330, thereby dividing the plate 210 in half by the height difference between the bottom boxes 310, so that each bottom box 310 has the same number of plate 210.

[0025] like Figure 5-6As shown, in the present embodiment, one ends of the two screw rods 420 penetrate through the adjacent side walls of the frame 330 and are fixedly sleeved with pulleys, and a transmission belt is rotatably sleeved between the outer walls of the two pulleys, one end of the frame 330 is fixedly connected to a drive box 421, and a drive motor is arranged inside the drive box 421, the motor shaft of the drive motor is fixedly connected to the other end of a screw rod 420, the top surface of the movable plate 410 is fixedly connected to a second cylinder 450, and the movable end of the second cylinder 450 is fixedly connected to the center of the bottom surface of the square plate, the outer walls of the four sliding rods 430 are slidably sleeved with a pressure ring 440, and the inner walls of the four pressure rings 440 are fixedly connected with two convex rods 441, and the two convex rods 441 inside any pressure ring 440 are slidably engaged in the two card grooves 431 on the adjacent sliding rods 430.

[0026] During specific implementation, by starting the driving motor, the two screw rods 420 can be driven to rotate synchronously through the transmission belt and the pulley, thereby controlling the movement of the movable plate 410, and the height of the square plate can be controlled by starting the second cylinder 450, thereby controlling the positions of multiple slide bars 430. The bottom end of the card slot 431 on the slide bar 430 is located above the bottom end of the slide bar 430. When the slide bar 430 moves, the four pressure rings 440 are always pressed on the uppermost plate body 210, and the heavier dead weight of the pressure ring 440 is used to press the plate body 210 to avoid a gap when the plate body 210 moves. After the plate body 210 is divided into multiple parts and each part of the plate body 210 is located on a different bottom box 310, the second cylinder 450 can be started to drive the four slide bars 430 to completely separate from the plate body 210, and the slide bar 430 uses the card slot 431 to lift the convex rod 441 on the pressure ring 440 to drive the pressure ring 440 to separate from the plate body 210.

[0027] like Figure 7-8 As shown, in this embodiment, the pressing mechanism 500 includes: Two rails 510, a card plate 520, a main cylinder 530, a connecting rod 540, a die 550, a plurality of L-shaped rods 560 and a screw rod 570, the two rails 510 are fixedly connected between the two ends inside the frame 330, the card plate 520 is slidably connected between the two rails 510, and the card plate 520 is located below the movable plate 410, the main cylinder 530 is fixedly connected to the bottom surface of the card plate 520, the top of the connecting rod 540 is fixedly connected to the movable end of the main cylinder 530, the outer wall of the connecting rod 540 is slidably sleeved with a collar 541, and the top of the connecting rod 540 is fixedly connected to two auxiliary cylinders 542, the movable ends of the two auxiliary cylinders 542 are fixedly connected to the top surface of the collar 541, the top center of the die 550 is fixedly connected to the bottom end of the connecting rod 540, the outer wall of the die 550 is provided with a plurality of notches 551, and the top surface of the die 550 is fixedly connected with a plurality of connecting frames 552, and a plurality of connecting rods 540 are fixedly connected to the bottom end of the connecting rod 540. The connecting frame 552 corresponds to the multiple notches 551 one by one, and the multiple L-shaped rods 560 correspond to the multiple notches 551 one by one. The short arms of the multiple L-shaped rods 560 are all movably inserted into the adjacent notches 551, and the long arms of the multiple L-shaped rods 560 are all slidably sleeved with the adjacent connecting frame 552. One end of the long arms of the multiple L-shaped rods 560 is rotatably connected with the rotating rod 561, and one end of the multiple rotating rods 561 is rotatably connected to the outer wall of the collar 541. The screw rod 570 is rotatably connected between the two ends inside the frame 330, one end of the screw rod 570 passes through the other end of the frame 330, and the other end of the frame 330 is fixedly connected with a power box 571, a power motor is arranged inside the power box 571, and the motor shaft of the power motor is fixedly connected to one end of the screw rod 570, a screw-in through hole is opened at one end of the clamping plate 520, and the inner side wall of the screw-in through hole is screwed with the outer side wall of the screw rod 570, and the gear powder metallurgy molding device is processed and formed.

[0028] In specific implementation, the shape of the die 550 is the same as the shape of the cavity on the plate body 210, and there is a hole in the center of the bottom surface of the die 550 for inserting the shaft rod 320. In the initial state, the short arms of multiple L-shaped rods 560 are all stuck in the adjacent notches 551 to keep the shape of the die 550 intact. An equal number of plates 210 are stacked on multiple bottom boxes 310, and after the plates 210 are clamped by adjacent abutment plates 351, the powder feeding mechanism 600 is used to feed metal powder into the thinner cavity in the plate body 210, and then the main cylinder 530 is started to drive the die 550 to descend, so that the die 550 presses the metal powder in the cavity of the plate body 210 for preliminary pressing. After the die 550 presses the powder to a certain extent, the two auxiliary cylinders 542 can be started to drive The collar 541 moves downward, so that the collar 541 contacts the short arms of the multiple L-shaped rods 560 through the rotating rod 561 and moves synchronously, so that the short arms of the multiple L-shaped rods 560 tightly contact the inner wall of the cavity of the adjacent plate body 210, and the metal powder in the cavity is all located below the plate body 210 contacted by the L-shaped rod 560, and then the main cylinder 530 is started to drive the die 550 to reset, so that the die 550 and the plate body 210 separated from the powder are synchronously moved upward, and at this time, the first cylinder 350 can be started to stop the plate 351 from clamping the plate body 210, and after the plate body 210 is driven to move upward by the die 550, the plate 351 is started to reset, and at the same time, the electric push rod in the bottom box 310 is started to make the top of the shaft rod 320 flush with the top of the metal powder, and then the power motor is started to drive the screw rod 570 to rotate. The pressing die 550 is moved to move the card plate 520, so that the pressing die 550 moves to the top of other plates 210, and when the pressing die 550 is pressed down, the carried plates 210 are temporarily placed on the top of other plates 210, and then after pressing down, the plates 210 on other plates 210 that are not in contact with the powder are taken away, and then when a plurality of thinner cavities are merged, the hydraulic cylinder 110 is started to make the plurality of bottom boxes 310 in a stepped shape, and the height difference between two adjacent bottom boxes 310 is equal to the height of the remaining plates 210 on the bottom box 310, and then the toggle mechanism 400 is used to move the upper plates 210 of the bottom boxes 310, so that the upper plates 210 of the plurality of bottom boxes 310 are stacked on one bottom box 310, and then the pressing die 550 is used to press the powder in the upper plate 210 of one bottom box 310. When the metal powder in the thinner cavity is initially pressed by the die 550, the metal powder in the thinner cavity at the bottom after the merger can be pressed to increase its compactness, while the powder in other cavities can be pressed looser, so that when the metal powder in the thinner cavity is merged into a thicker cavity and the die 550 presses the metal powder in the thicker cavity from above, the compactness of the powder at the top and bottom of the thicker cavity is similar, so that the metal powder in the cavity is evenly pressed and the compactness of the powder can be controlled.At the same time, when the die 550 is pressed down, the extra plate 210 carried by it can be placed on the plate 210 on a bottom box 310. After use, the user can manually take out the green body in the cavity, or set an ejection device on a bottom box 310 to eject the green body. The ejection device is a prior art and will not be described in detail here. Embodiment 2

[0029] On the basis of the first embodiment, a powder feeding mechanism 600 is provided to smooth the powder in the cavity.

[0030] like Fig. 9 As shown, in this embodiment, the powder feeding mechanism 600 includes: The shell 610, the square tube 620, the sleeve 630 and the two third cylinders 640, the shell 610 is a bottom opening structure, and both ends of the shell 610 are arc-shaped surfaces, a connecting port 332 is opened at one end of the frame 330, and the shell 610 is located inside the connecting port 332, the bottom surface of the square tube 620 is fixedly connected to the top surface of the shell 610, a plurality of connecting pipe openings are opened on the inner top surface of the shell 610, and the plurality of connecting pipe openings are connected to the inner side of the square tube 620, the square tube 620 is fixedly connected with guide rails 621 on both opposite sides, the sleeve 630 is located inside the connecting port 332, a plurality of guide wheels 631 are arranged on both ends of the inner top surface of the sleeve 630, and the two guide rails 6 21 are both located between the two ends of the inner top surface of the casing 630, a wheel axle is fixedly sleeved inside any guide wheel 631, and the wheel axle of any guide wheel 631 is rotatably connected to the inner top surface of the casing 630, the outer side wall of any guide wheel 631 is slidably engaged inside the adjacent guide rail 621, a motor box 632 is fixedly connected to the top surface of the casing 630, and a servo motor is arranged inside the motor box 632, the motor shaft of the servo motor is fixedly connected to the wheel axle of the adjacent guide wheel 631, the two third cylinders 640 are fixedly connected to one end of the frame 330, support plates are fixedly connected to the opposite sides of the casing 630, and the movable ends of the two third cylinders 640 are respectively fixedly connected to the bottom surfaces of the two support plates.

[0031] During specific implementation, the discharge port of the automatic feeding hopper is connected to the pipeline, and the pipeline is connected to the connecting pipe port through the square tube 620. When multiple bottom boxes 310 are placed flat, the user can adjust the height of the shell 610 by starting the two third cylinders 640, and then start the servo motor to drive the adjacent guide wheels 631 to rotate, and send the square tube 620 together with the shell 610 into the frame 330, so that the bottom of the shell 610 covers the cavity of the plate bodies 210 on the multiple bottom boxes 310, and then the powder is transported to the inside of the shell 610 through the automatic feeding hopper, and then the servo motor is started to move the shell 610 to scrape the powder on the multiple plate bodies 210, so that the powder in the cavity is scraped flat. When in use, a vibration motor can be installed on the base 100 to make the powder in the cavity on the plate body 210 easier to fill the cavity due to vibration. The automatic feeding hopper and the vibration motor are both existing technologies and will not be repeated here.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A powder metallurgy forming device for automobile gears, characterized in that: include: A base (100) having a hydraulic cylinder (110) fixedly connected to the bottom of one end; A mold mechanism (200) is located above the base (100), the mold mechanism (200) comprising a plurality of vertically stacked plates (210), and a mold cavity is provided at the center of the top surface of each of the plurality of plates (210); The supporting mechanism (300) is located below the plurality of the plate bodies (210), the supporting mechanism (300) comprising a plurality of bottom boxes (310) sequentially arranged along the long sides of the top surface of the base (100), and the plurality of bottom boxes (310) are all located on the top surface of the base (100), the top surface of the base (100) is fixedly connected with a frame body (330), and the plurality of bottom boxes (310) are all located inside the frame body (330), and the frame body (330) is provided with a plurality of slide grooves (331) on opposite sides, and the frame body (330) is The plurality of slide grooves (331) on one side correspond to the plurality of bottom boxes (310) one by one, the plurality of bottom boxes (310) are fixedly connected with sliders (311) on opposite sides, the sliders (311) are slidably engaged in the interior of adjacent slide grooves (331), the top surfaces of the plurality of bottom boxes (310) are provided with sleeve holes, and the interiors of the plurality of sleeve holes are slidably engaged with shaft rods (320), the interiors of the plurality of bottom boxes (310) are provided with electric push rods, and the movable ends of the plurality of electric push rods are fixedly connected to the bottom ends of adjacent shaft rods (320); A toggle mechanism (400) located inside the frame (330); A pressing mechanism (500) located below the toggle mechanism (400); The powder feeding mechanism (600) is located at one end of the frame (330).

2. The powder metallurgy forming device according to claim 1, characterized in that: The toggle mechanism (400) comprises: The movable plate (410) has sliding holes (411) at four corners of the top surface; Two screw rods (420) are rotatably connected between two ends of the frame (330); one end of the movable plate (410) is provided with two threaded holes, and the inner side walls of the two threaded holes are respectively screwed with the outer side walls of the two screw rods (420); Four slide bars (430), the outer walls of which are respectively slidably sleeved in the four slide holes (411), the outer walls of the four slide bars (430) are each provided with two slots (431), and the inner walls of the four slide holes (411) are each fixedly connected with two convex strips, the two convex strips in any slide hole (411) are slidably clamped in the two slots (431) on the adjacent slide bars (430), the four corners of the top surface of any plate body (210) are each provided with a plug hole (211), the four slide bars (430) are respectively slidably plugged in the four plug holes (211) on any plate body (210), the tops of the four slide bars (430) are provided with a square plate, and the tops of the four slide bars (430) are each fixedly connected to the bottom surface of the square plate.

3. The powder metallurgy forming device according to claim 2, characterized in that: The pressing mechanism (500) comprises: Two rails (510) are fixedly connected between two ends inside the frame (330); A card plate (520) is slidably connected between the two card rails (510), and the card plate (520) is located below the movable plate (410); A main cylinder (530) fixedly connected to the bottom surface of the clamping plate (520); A connecting rod (540), the top end of which is fixedly connected to the movable end of the main cylinder (530); a collar (541) is slidably sleeved on the outer wall of the connecting rod (540); and two auxiliary cylinders (542) are fixedly connected to the top end of the connecting rod (540); the movable ends of the two auxiliary cylinders (542) are fixedly connected to the top surface of the collar (541); A pressing die (550), the center of the top surface of which is fixedly connected to the bottom end of the connecting rod (540), a plurality of notches (551) being provided on the outer side wall of the pressing die (550), and a plurality of connecting frames (552) being fixedly connected to the top surface of the pressing die (550), the plurality of connecting frames (552) corresponding one to one to the plurality of notches (551); A plurality of L-shaped rods (560) corresponding to the plurality of notches (551) one by one, the short arms of the plurality of L-shaped rods (560) being movably inserted into adjacent notches (551), and the long arms of the plurality of L-shaped rods (560) being slidably sleeved inside adjacent connection frames (552), one end of the long arms of the plurality of L-shaped rods (560) being rotatably connected to a rotating rod (561), and one end of the plurality of rotating rods (561) being rotatably connected to an outer wall of the collar (541); The screw rod (570) is rotatably connected between the two ends inside the frame (330); one end of the screw rod (570) passes through the other end of the frame (330); the other end of the frame (330) is fixedly connected to a power box (571); a power motor is arranged inside the power box (571); the motor shaft of the power motor is fixedly connected to one end of the screw rod (570); one end of the clamping plate (520) is provided with a screw-on through hole; the inner side wall of the screw-on through hole is screw-on with the outer side wall of the screw rod (570).

4. The powder metallurgy forming device according to claim 1, characterized in that: The powder feeding mechanism (600) comprises: The shell (610) is a bottom-opening structure, and both ends of the shell (610) are arc-shaped surfaces; a communication port (332) is provided at one end of the frame (330), and the shell (610) is located inside the communication port (332); A square tube (620) having a bottom surface fixedly connected to the top surface of the shell (610); a plurality of pipe connection openings are provided on the top surface of the shell (610); and the plurality of pipe connection openings are all connected to the interior of the square tube (620); and guide rails (621) are fixedly connected to opposite sides of the square tube (620); A casing (630) is located inside the communication port (332); a plurality of guide wheels (631) are provided at both ends of the inner top surface of the casing (630); and two guide rails (621) are located between the two ends of the inner top surface of the casing (630); a wheel axle is fixedly sleeved inside any guide wheel (631); and the wheel axle of any guide wheel (631) is rotatably connected to the inner top surface of the casing (630); an outer side wall of any guide wheel (631) is slidably engaged inside an adjacent guide rail (621); a motor box (632) is fixedly connected to the top surface of the casing (630); and a servo motor is provided inside the motor box (632); and a motor shaft of the servo motor is fixedly connected to the wheel axle of an adjacent guide wheel (631); The two third cylinders (640) are both fixedly connected to one end of the frame (330), the sleeve (630) is fixedly connected to support plates on opposite sides, and the movable ends of the two third cylinders (640) are respectively fixedly connected to the bottom surfaces of the two support plates.

5. The powder metallurgy forming device according to claim 1, characterized in that: Two guide rods (340) are disposed on opposite sides of the frame (330), and the outer side walls of the two guide rods (340) are each provided with a plurality of sleeves (341), wherein the inner side walls of the sleeves (341) located at one end of the two guide rods (340) are fixedly sleeved with the outer side walls of the adjacent guide rods (340), and a rotating plate (342) is rotatably connected between the two sleeves (341) located at the other ends of the two guide rods (340), and the bottom surface of the rotating plate (342) is fixedly connected to the movable end of the hydraulic cylinder (110). The sleeve (341) is located at the other end of the guide rod (340), and the outer side walls of the other sleeves (341) are rotatably connected to one end of the adjacent slider (311). The inner side walls of the other sleeves (341) are slidably sleeved to the outer side walls of the adjacent guide rod (340) except the sleeve (341) located at one end of the guide rod (340). The bottom surface of a bottom box (310) located at one end inside the frame (330) is fixedly connected to the top surface of the base (100).

6. The powder metallurgy forming device according to claim 5, characterized in that: The tops of two opposite sides of any base box (310) are fixedly connected to L-shaped frames, one side of a long arm of any L-shaped frame is fixedly connected to a first cylinder (350), and the movable end of any first cylinder (350) is fixedly connected to a stop plate (351).

7. The powder metallurgy forming device according to claim 3, characterized in that: One end of each of the two screw rods (420) passes through the side wall of the adjacent frame (330) and is fixedly sleeved with a pulley, and a transmission belt is rotatably sleeved between the outer side walls of the two pulleys. One end of the frame (330) is fixedly connected to a drive box (421), and a drive motor is arranged inside the drive box (421), and a motor shaft of the drive motor is fixedly connected to the other end of a screw rod (420).

8. The powder metallurgy forming device according to claim 3, characterized in that: The top surface of the movable plate (410) is fixedly connected to a second cylinder (450), and the movable end of the second cylinder (450) is fixedly connected to the center of the bottom surface of the square plate.

9. The powder metallurgy forming device according to claim 3, characterized in that: The outer side walls of the four slide bars (430) are all slidably sleeved with a pressure ring (440), and the inner side walls of the four pressure rings (440) are all fixedly connected with two protruding rods (441), and the two protruding rods (441) inside any pressure ring (440) are slidably clamped inside the two clamping grooves (431) on the adjacent slide bars (430).

10. A gear, characterized in that The gear is processed and formed by the powder metallurgy forming device described in any one of claims 1-9.

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