A metal powder forming device for gear production

Abstract

The present invention relates to the field of metal powder molding, and in particular to a metal powder molding device for gear production. Existing equipment is difficult to fill the metal powder in the dead corners of the mold, and it is easy to cause the metal powder on the inner surface of the mold to be empty, which in turn causes uneven strength of the pressed gear, thereby affecting the quality of the pressed gear. A metal powder molding device for gear production includes a base; a fixed frame is fixedly connected to the base. As the movable wall moves upward, the space between the movable wall and the mold becomes larger, so that the excess metal powder can be completely filled into the space between the movable wall and the mold; when the vibrator is started, it will directly vibrate the metal powder, so that the metal powder evenly fills the dead corners between the movable wall and the mold, thereby making the strength of the pressed gear uniform, thereby improving the quality of the pressed gear.

Description

Technical Field

[0001] The invention relates to the field of metal powder molding, and in particular to a metal powder molding device for gear production. Background Art

[0002] Powder metallurgy is a process technology that uses metal powder (or a mixture of metal powder and non-metallic powder) as raw material to manufacture metal materials, composite materials and various types of products through forming and sintering. Among them, some gears are made using powder metallurgy methods. Powder metallurgy gear production is suitable for mass production, with high material utilization and very good gear size uniformity.

[0003] When the powder metallurgy gears are pressed and formed by the existing equipment, metal powder needs to be injected into the mold. Since some gears are complex shapes composed of multiple gears stacked together, there will easily be some small dead corners in the mold, which makes it difficult to completely fill the dead corners of the mold with the metal powder filled during filling. As a result, the metal powder in various parts of the mold is not uniform. In addition, when filling the mold, most of the metal powder will fall into the mold and accumulate to form a conical metal powder pile, and a small part of the metal powder will fall around the mold. The piled metal powder is difficult to fully fill the corners of the mold. The scraper then pushes the metal powder on the top of the metal powder pile and the metal powder around the mold to scrape the metal powder on the surface of the mold. This will easily cause the metal powder on the surface of the mold to appear empty and full, which will lead to uneven strength of the pressed gears, thereby affecting the quality of the pressed gears. Summary of the invention

[0004] In order to overcome the shortcomings of existing equipment that it is difficult to fill the dead corners of the mold with metal powder, and that the metal powder on the inner surface of the mold is easily filled, which leads to uneven strength of the pressed gears, thereby affecting the quality of the pressed gears, the present invention provides a metal powder forming device for gear production, which can fill the space between the moving wall and the mold with metal powder, and make the metal powder more uniform, thereby improving the quality of the pressed gears.

[0005] The technical solution is: a metal powder forming device for gear production, including a base, a fixed frame, a powder collecting frame, a mold, a pressure plate, a hydraulic push rod, a hydraulic cylinder and a movable mold. The fixed frame is fixedly connected to the base, the powder collecting frame is stuck in the base, the mold is fixedly connected to the base, the pressure plate is slidably connected in the mold, two hydraulic push rods are fixedly connected in the mold, the moving rods of the two hydraulic push rods are fixedly connected to the pressure plate, the hydraulic cylinder is fixedly connected to the fixed frame, the movable mold is fixedly connected to the hydraulic rod of the hydraulic cylinder, the unloading mechanism is arranged on the base, the lifting mechanism is arranged on the unloading mechanism, and the vibration mechanism is arranged on the unloading mechanism.

[0006] As a further preferred scheme, the unloading mechanism includes an electric push rod, a pushing block, a moving frame, a limiting ring, a buffer spring, a sealing shell and a feeding pump. The two electric push rods are fixedly connected to the base, the two pushing blocks are respectively fixedly connected to the telescopic rods of the two electric push rods, the moving frame is slidably connected between the two pushing blocks, the limiting ring is fixedly connected to the moving frame, the two buffer springs are respectively fixedly connected between the moving frame and the two pushing blocks, the sealing shell is fixedly connected to the moving frame, the feeding pump is fixedly connected to the moving frame, and the feeding pump is fixedly connected to the sealing shell.

[0007] As a further preferred solution, the feeding pump is provided with three feeding holes.

[0008] As a further preferred solution, the lifting mechanism includes a guide frame, a movable wall, a lifting frame and a tension spring. The two guide frames are fixedly connected to the two pushing blocks respectively, the movable wall is slidably connected to the mold, the lifting frame is slidably connected to the movable frame, and a number of tension springs are fixedly connected between the lifting frame and the movable frame.

[0009] As a further preferred scheme, the vibration mechanism includes a guide rod frame, a switch, a sliding plate, a connecting rod frame, a vibrator, a rotating gear and a rack. The three guide rod frames are fixedly connected to the moving frame, the two switches are fixedly connected to one of the guide rod frames, the sliding plate is slidably connected between the three guide rod frames, one of the switches is in contact with the sliding plate, the connecting rod frame is rotatably connected to the sliding plate, and the three rotating gears are respectively rotatably connected to the three guide rod frames, three of which are fixedly connected to the lifting frame, and the other three racks are fixedly connected to the sliding plate. Two racks form a group, each group of racks is meshed with a rotating gear, and several vibrators are fixedly connected to the connecting rod frame.

[0010] As a further preferred solution, the plurality of vibrators are divided into two layers, an upper layer and a lower layer.

[0011] As a further preferred scheme, it also includes a stirring mechanism, which is arranged on the connecting rod frame, and is used to stir the metal powder. The stirring mechanism includes a rotating rod, a fixed rod frame, an acceleration box, a fixed connecting plate and a scraper. The rotating rod is rotatably connected to the sealing shell, and a guide groove is opened on the rotating rod. The fixed rod frame is fixedly connected to the sliding plate, and the fixed rod frame is in contact with the guide groove of the rotating rod. The input end of the acceleration box is fixedly connected to the rotating rod, and the output end of the acceleration box is slidably connected to the connecting rod frame. The fixed connecting plate is fixedly connected to the feeding pump, and the fixed connecting plate is fixedly connected to the acceleration box. Two vibrators form a group, and six scrapers are respectively fixedly connected to the six groups of vibrators.

[0012] As a further preferred scheme, it also includes a swing mechanism, which is arranged on the feeding pump and is used to shake the metal powder. The swing mechanism includes a rotating nozzle, a rotating gear rack and a driven gear. The three rotating nozzles are respectively rotatably connected to the three feeding holes of the feeding pump, the rotating gear rack is fixedly connected to the output shaft of the acceleration box, and the three driven gears are respectively fixedly connected to the three rotating nozzles, and the rotating gear rack is meshed with the three driven gears.

[0013] As a further preferred embodiment, the rotating nozzle is conical.

[0014] As a further preferred solution, it also includes limiting rods, two limiting rods are slidably connected to the fixing frame, and the two limiting rods are in contact with the movable wall.

[0015] The present invention has the following advantages: 1. Excessive metal powder will be restricted by the restriction ring when pumping, which can reduce the probability of the metal powder flying to the outside of the moving wall and the restriction ring; since the moving wall moves upward, the space between the moving wall and the mold becomes larger, so that the excess metal powder can be completely filled into the space between the moving wall and the mold; the vibrator will directly vibrate the metal powder when it is started, so that the metal powder evenly fills the dead corner between the moving wall and the mold; the resetting of the moving frame will push and smooth the metal powder that is higher than the moving wall, so that the remaining metal powder will also fill the space between the moving wall and the mold, thereby making the strength of the pressed gear uniform, thereby improving the quality of the pressed gear.

[0016] 2. The large reciprocating swing of the vibrator and the scraper will push the metal powder on the surface to prevent the metal powder from accumulating too much in one place. At the same time, the large reciprocating swing of the vibrator can vibrate the metal powder pile more comprehensively, so that the metal powder can fill the dead corner between the mold and the moving wall more densely, thereby making the metal powder between the mold and the moving wall more uniform, thereby further improving the quality of the pressed gear.

[0017] 3. The rotation of the rotating nozzle will cause the metal powder pumped by the feeding pump to swing, so that the metal powder falls more evenly into the space between the mold and the moving wall, thereby further improving the uniformity of the metal powder between the mold and the moving wall, thereby further improving the quality of the pressed gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the base, powder collection frame and electric push rod of the present invention.

[0020] Figure 3It is a partial three-dimensional structural schematic diagram of the feeding mechanism and the lifting mechanism of the present invention.

[0021] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0022] Figure 5 It is a partial three-dimensional structural schematic diagram of the lifting mechanism and the stirring mechanism of the present invention.

[0023] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the vibration mechanism of the present invention.

[0024] Figure 7 It is a partial three-dimensional structural schematic diagram of the feeding mechanism and the vibration mechanism of the present invention.

[0025] Figure 8 It is a partial cross-sectional three-dimensional structural schematic diagram of the vibration mechanism and the stirring mechanism of the present invention.

[0026] Fig. 9 It is a schematic diagram of the partial three-dimensional structure of the stirring mechanism of the present invention.

[0027] Fig.10 It is a partial three-dimensional structural schematic diagram of the stirring mechanism and the swing mechanism of the present invention.

[0028] Fig.11 It is a schematic diagram of the partial three-dimensional structure of the swing mechanism of the present invention.

[0029] Wherein: 1-base, 2-fixed frame, 21-powder collecting frame, 22-mold, 23-pressure plate, 24-hydraulic push rod, 3-hydraulic cylinder, 4-movable mold, 51-electric push rod, 52-pushing block, 53-moving frame, 531-limiting ring, 54-buffer spring, 55-sealing shell, 56-feeding pump, 61-guide frame, 62-moving wall, 63-lifting frame, 64-tension spring, 71-guide rod frame, 701-switch, 72-sliding plate, 73-connecting rod frame, 74-vibrator, 75-rotating gear, 76-rack, 81-rotating rod, 82-fixed rod frame, 83-acceleration box, 84-fixed connecting plate, 85-scraper, 91-rotating nozzle, 92-rotating gear frame, 93-driven gear, 10-limiting rod. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installing, connecting, and connecting should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1: A metal powder forming device for gear production, such as Figure 1-Figure 7 As shown, it includes a base 1, a fixed frame 2, a powder collecting frame 21, a mold 22, a pressure plate 23, a hydraulic push rod 24, a hydraulic cylinder 3 and a movable mold 4. The fixed frame 2 is fixedly connected to the base 1, a blanking hole is opened on the base 1, the powder collecting frame 21 is stuck in the base 1, the mold 22 is connected to the base 1 by bolts, the pressure plate 23 is slidably connected in the mold 22, two hydraulic push rods 24 are connected in the mold 22 by bolts, the moving rods of the two hydraulic push rods 24 are fixedly connected to the pressure plate 23, the hydraulic cylinder 3 is connected to the fixed frame 2 by bolts, the movable mold 4 is connected to the hydraulic rod of the hydraulic cylinder 3 by bolts, the movable mold 4 is used to press metal powder, the blanking mechanism is arranged on the base 1, the lifting mechanism is arranged on the blanking mechanism, the lifting mechanism is used to expand the container space, the vibration mechanism is arranged on the blanking mechanism, and the vibration mechanism is used to vibrate the metal powder.

[0032] The unloading mechanism includes an electric push rod 51, a pushing block 52, a moving frame 53, a limiting ring 531, a buffer spring 54, a sealing shell 55 and a feeding pump 56. The two electric push rods 51 are connected to the base 1 by bolts, the two pushing blocks 52 are respectively fixedly connected to the telescopic rods of the two electric push rods 51, the moving frame 53 is slidably connected between the two pushing blocks 52, the two pushing blocks 52 are symmetrically arranged, the limiting ring 531 is welded to the moving frame 53, the two buffer springs 54 are respectively fixedly connected between the moving frame 53 and the two pushing blocks 52, the sealing shell 55 is connected to the moving frame 53 by bolts, the feeding pump 56 is fixedly connected to the moving frame 53, and the feeding pump 56 is fixedly connected to the sealing shell 55.

[0033] The feeding pump 56 is provided with three feeding holes.

[0034] The lifting mechanism includes a guide frame 61, a movable wall 62, a lifting frame 63 and a tension spring 64. The two guide frames 61 are respectively welded to the two pushing blocks 52. The movable wall 62 is slidably connected to the mold 22. The lifting frame 63 is slidably connected to the movable frame 53. A plurality of tension springs 64 are fixedly connected between the lifting frame 63 and the movable frame 53. A plurality of tension springs 64 are sleeved on the lifting frame 63.

[0035] The vibration mechanism includes a guide rod frame 71, a switch 701, a sliding plate 72, a connecting rod frame 73, a vibrator 74, a rotating gear 75 and a rack 76. The three guide rod frames 71 are welded to the moving frame 53, two switches 701 are fixedly connected to one of the guide rod frames 71, the sliding plate 72 is slidably connected between the three guide rod frames 71, one of the switches 701 is in contact with the sliding plate 72, the connecting rod frame 73 is rotatably connected to the sliding plate 72, and three rotating gears 75 are rotatably connected to the three guide rod frames 71 respectively, three racks 76 are fixedly connected to the lifting frame 63, and the other three racks 76 are fixedly connected to the sliding plate 72, two racks 76 form a group, each group of racks 76 is meshed with a rotating gear 75, and several vibrators 74 are fixedly connected to the connecting rod frame 73. The switch 701 is used to switch the vibrator 74 and the feeding pump 56.

[0036] The plurality of vibrators 74 are divided into two layers, upper and lower layers.

[0037] At first, the staff starts the electric push rod 51, and the telescopic rod of the electric push rod 51 will drive the pushing block 52 and the guide frame 61 to move. The movement of the pushing block 52 will drive the moving frame 53 to move through the buffer spring 54. The movement of the moving frame 53 will drive the limiting ring 531, the sealing shell 55, the feeding pump 56, the guide frame 61, the lifting frame 63, the tension spring 64, the guide rod frame 71, the switch 701, the sliding plate 72, the connecting rod frame 73, the vibrator 74, the rotating gear 75 and the rack 76 to move. The movement of the moving frame 53 will contact the protrusion of the base 1 and stop the moving frame 53 from moving. The lifting frame 63 moves to the top of the moving wall 62. When the moving frame 53 stops moving, the guide frame 61 contacts the moving wall 62, and the telescopic rod of the electric push rod 51 will continue to move. The pushing block 52 and the guide frame 61 are continuously driven to move. The movement of the pushing block 52 compresses the buffer spring 54. The movement of the guide frame 61 squeezes the moving wall 62 and causes the moving wall 62 to move upward. The moving wall 62 moves upward and contacts with the moving frame 53 and limits the moving frame 53. At the same time, the moving wall 62 moves upward and contacts with the limiting ring 531. The moving wall 62 continues to move upward and contacts with the lifting frame 63 and pushes the lifting frame 63 to move upward. The lifting frame 63 moves upward and causes the tension spring 64 to stretch. The lifting frame 63 moves upward and three of the racks 76 move upward. The three racks 76 move upward and cause the rotating gear 75 to rotate. The rotating gear 75 rotates and drives the other three racks 76 to move downward. The other three racks 76 move downward. 6 moves downward, which drives the sliding plate 72, the connecting rod frame 73 and the vibrator 74 to move downward. The sliding plate 72 moves downward and is out of contact with one of the switches 701. The vibrator 74 moves downward and enters the interior of the movable wall 62 and the mold 22. The lower vibrator 74 enters the depression in the center of the mold 22. The sliding plate 72 continues to move downward and contacts another switch 701. The other switch 701 starts the feeding pump 56 and the vibrator 74. The feeding pump 56 pumps excess metal powder into the space between the movable wall 62 and the mold 22 through three feeding holes. The excess metal powder will be limited by the limiting ring 531 when being pumped, which can reduce the probability of the metal powder flying to the outside of the movable wall 62 and the limiting ring 531, and by As the movable wall 62 moves upward, the space between the movable wall 62 and the mold 22 becomes larger, so that the excess metal powder can be completely filled into the space between the movable wall 62 and the mold 22. The vibrator 74 starts to vibrate the metal powder directly. The vibrator 74 on the lower layer vibrates the metal powder in the depression at the center of the mold 22, so that the metal powder evenly fills the dead angle between the movable wall 62 and the mold 22. At the same time, the telescopic rod of the electric push rod 51 begins to shrink slowly. The shrinkage of the telescopic rod of the electric push rod 51 drives the push block 52 and the guide frame 61 to reset. As the movable wall 62 moves upward and contacts the movable frame 53, the movable frame 53 is restricted by the movable wall 62. The reset of the push block 52 resets the buffer spring 54.The reset of the guide frame 61 will squeeze the movable wall 62 so that the movable wall 62 moves downward. The lifting frame 63 is in close contact with the top of the movable wall 62 driven by the tension spring 64. The downward movement of the movable wall 62 will cause the lifting frame 63 to reset downward. The downward reset of the lifting frame 63 will drive three of the racks 76 to move downward. The downward movement of the three racks 76 will drive the other three racks 76 to move upward by rotating the gear 75. The upward movement of the other three racks 76 will drive the sliding plate 72, the connecting rod frame 73 and the vibrator 74 to reset upward. The speed of the vibrator 74 moving upward is the same as the rising speed of the movable frame 53 and the metal powder pile in the mold 22, so that the lower end of the vibrator 74 is The sliding plate 72 is reset and contacts one of the switches 701 again. One of the switches 701 turns off the vibrator 74 and the feeding pump 56. The moving wall 62 continues to reset downward and is out of contact with the lifting frame 63. The moving wall 62 continues to reset downward and is out of contact with the limiting ring 531. After the moving wall 62 is reset, some metal powder will be higher than the moving wall 62. After the moving wall 62 is reset, it will be out of contact with the moving frame 53. The telescopic rod of the electric push rod 51 will continue to drive the pushing block 52 and the guide frame 61 to reset. The reset of the pushing block 52 will drive the moving frame 53 to reset. The reset of the moving frame 53 will drive the limiting ring 531, the buffer spring 54, and the sealing ring 531. The sealing shell 55, the feeding pump 56, the guide frame 61, the lifting frame 63, the tension spring 64, the guide rod frame 71, the switch 701, the sliding plate 72, the connecting rod frame 73, the vibrator 74, the rotating gear 75 and the rack 76 are reset. The reset of the moving frame 53 will push and smooth the metal powder that is higher than the moving wall 62, so that the remaining metal powder will also fill the space between the moving wall 62 and the mold 22. The excess metal powder will be pushed to the blanking hole of the base 1 by the moving frame 53, and then the excess metal powder will fall into the powder collecting frame 21. Then the staff will close the electric push rod 51 and start the hydraulic cylinder 3. The hydraulic rod of the hydraulic cylinder 3 will drive the movable mold 4 to move downward. The downward movement of the mold 4 will contact the metal powder in the movable wall 62 and press the metal powder into shape. After the gear is pressed and formed, the hydraulic rod of the hydraulic cylinder 3 will drive the movable mold 4 to reset. The hydraulic cylinder 3 will be closed and the hydraulic push rod 24 will be started. The moving rod of the hydraulic push rod 24 will drive the pressure plate 23 to move upward. The upward movement of the pressure plate 23 will push out the pressed gear. After the staff takes away the pressed gear, the moving rod of the hydraulic push rod 24 will drive the pressure plate 23 to reset. The staff will close the hydraulic push rod 24. Since the metal powder will fill the space between the movable wall 62 and the mold 22, the strength of the pressed gear will be uniform, thereby improving the quality of the pressed gear.

[0038] Embodiment 2: Based on embodiment 1, Figure 8-Figure 10As shown, it also includes a stirring mechanism, which is arranged on the connecting rod frame 73 and is used to stir the metal powder. The stirring mechanism includes a rotating rod 81, a fixed rod frame 82, an acceleration box 83, a fixed connecting plate 84 and a scraper 85. The rotating rod 81 is rotatably connected to the sealing shell 55, and a guide groove is opened on the rotating rod 81. The fixed rod frame 82 is welded to the sliding plate 72, and the fixed rod frame 82 contacts the guide groove of the rotating rod 81. The input end of the acceleration box 83 is fixedly connected to the rotating rod 81, and the output end of the acceleration box 83 is slidably connected to the connecting rod frame 73. The acceleration box 83 can amplify the rotation of the input end. The fixed connecting plate 84 is connected to the feeding pump 56 by bolts, and the fixed connecting plate 84 is fixedly connected to the acceleration box 83. Two vibrators 74 form a group, and six scrapers 85 are respectively fixedly connected to the six groups of vibrators 74.

[0039] The movement of the sealing shell 55 and the guide rod frame 71 will drive the rotating rod 81, the fixed rod frame 82, the acceleration box 83 and the fixed connecting plate 84 to move. When the rotating rod 81, the fixed rod frame 82, the acceleration box 83, the fixed connecting plate 84 and the scraper 85 are located above the movable wall 62, the vibrator 74 moves downward to drive the scraper 85 to move downward, the guide rod frame 71 and the sliding plate 72 move downward to drive the fixed rod frame 82 to move downward, and the fixed rod frame 82 moves downward to squeeze the guide groove of the rotating rod 81 so that the rotating rod 81 rotates back and forth. The reciprocating rotation of the rotating rod 81 drives the input end of the acceleration box 83 to swing back and forth, and the output end of the acceleration box 83 drives the guide rod frame 71, the vibrator 74 and the scraper 85 to swing back and forth significantly. When the feeding pump 56 starts to pump metal powder, the vibrator 74 moves upward to drive the scraper 85 to move and reset upward, and the guide rod frame 71 and the sliding plate 72 move downward to drive the fixed rod frame 82 to move downward. The upward movement of plate 72 will drive the fixed rod frame 82 to reset upward, and the upward reset of the fixed rod frame 82 will cause the rotating rod 81 to reciprocate. The reciprocating rotation of the rotating rod 81 will drive the guide rod frame 71, vibrator 74 and scraper 85 to swing back and forth significantly through the acceleration box 83. Since the lower end of the vibrator 74 is always in contact with the surface of the metal powder pile, the scraper 85 is always in contact with the surface of the metal powder pile. The large-scale reciprocating swing of the vibrator 74 and the scraper 85 will push the metal powder on the surface to prevent the metal powder from accumulating too much in one place. At the same time, the large-scale reciprocating swing of the vibrator 74 can vibrate the metal powder pile more comprehensively, so that the metal powder can fill the dead corner between the mold 22 and the movable wall 62 more densely, thereby making the metal powder between the mold 22 and the movable wall 62 more uniform, thereby further improving the quality of the pressed gear.

[0040] Embodiment 3: Based on embodiment 2, Figure 10-11As shown, it also includes a swing mechanism, which is arranged on the feeding pump 56 and is used to shake the metal powder. The swing mechanism includes a rotating nozzle 91, a rotating gear rack 92 and a driven gear 93. The rotating nozzle 91 is used to guide the feeding of the metal powder. The three rotating nozzles 91 are respectively rotatably connected to the three feeding holes of the feeding pump 56, the rotating gear rack 92 is fixedly connected to the output shaft of the acceleration box 83, and the three driven gears 93 are respectively welded to the three rotating nozzles 91, and the rotating gear rack 92 is meshed with the three driven gears 93.

[0041] The rotating nozzle 91 is conical.

[0042] The movement of the feeding pump 56 and the acceleration box 83 will drive the rotating nozzle 91, the rotating gear rack 92 and the driven gear 93 to move. When the feeding pump 56 starts to pump metal powder, the rotation of the output shaft of the acceleration box 83 will drive the rotating gear rack 92 to rotate. The rotation of the rotating gear rack 92 will drive the driven gear 93 and the rotating nozzle 91 to rotate. The rotation of the rotating nozzle 91 will cause the metal powder pumped by the feeding pump 56 to swing, so that the metal powder falls more evenly into the space between the mold 22 and the moving wall 62, thereby further improving the uniformity of the metal powder between the mold 22 and the moving wall 62, thereby further improving the quality of the pressed gear.

[0043] Embodiment 4: Based on embodiment 3, Figure 1 As shown, it also includes limiting rods 10 , two limiting rods 10 are slidably connected to the fixing frame 2 , and the two limiting rods 10 are in contact with the movable wall 62 .

[0044] Initially, the limiting rod 10 limits the movable wall 62, and the guide frame 61 moves to contact with the limiting rod 10 and push the limiting rod 10 to move. After the metal powder is added, the guide frame 61 resets to disengage from the limiting rod 10, and the push block 52 resets to contact with the limiting rod 10 and pushes the limiting rod 10 to reset. The limiting rod 10 resets to limit the movable wall 62 again, so that the movable wall 62 will not move when the movable mold 4 presses the metal powder, thereby making the metal powder better pressed.

[0045] The technical principles of the embodiments of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present invention and cannot be interpreted in any way as limiting the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the embodiments of the present invention without creative work, and these methods will fall within the protection scope of the embodiments of the present invention.

Claims

1. A metal powder forming device for gear production, characterized in that: The invention comprises a base (1), a fixed frame (2), a powder collecting frame (21), a mold (22), a pressure plate (23), a hydraulic push rod (24), a hydraulic cylinder (3) and a movable mold (4), wherein the fixed frame (2) is fixedly connected to the base (1), the powder collecting frame (21) is clamped in the base (1), the mold (22) is fixedly connected to the base (1), the pressure plate (23) is slidably connected in the mold (22), two hydraulic push rods (24) are fixedly connected in the mold (22), the moving rods of the two hydraulic push rods (24) are fixedly connected to the pressure plate (23), the hydraulic cylinder (3) is fixedly connected to the fixed frame (2), the movable mold (4) is fixedly connected to the hydraulic rod of the hydraulic cylinder (3), a material discharge mechanism is arranged on the base (1), a lifting mechanism is arranged on the material discharge mechanism, and a vibration mechanism is arranged on the material discharge mechanism; The unloading mechanism comprises an electric push rod (51), a pushing block (52), a moving frame (53), a limiting ring (531), a buffer spring (54), a sealing shell (55) and a feeding pump (56); The lifting mechanism comprises a guide frame (61), a movable wall (62), a lifting frame (63) and a tension spring (64); The vibration mechanism comprises a guide rod frame (71), a switch (701), a sliding plate (72), a connecting rod frame (73), a vibrator (74), a rotating gear (75) and a rack (76), wherein the three guide rod frames (71) are fixedly connected to the moving frame (53), the two switches (701) are fixedly connected to one of the guide rod frames (71), the sliding plate (72) is slidably connected between the three guide rod frames (71), and one of the switches (701) and the sliding plate (72) are connected to the moving frame (53). The connecting rod frame (73) is rotatably connected to the sliding plate (72), and three rotating gears (75) are rotatably connected to the three guide rod frames (71), three racks (76) are fixedly connected to the lifting frame (63), and the other three racks (76) are fixedly connected to the sliding plate (72), two racks (76) form a group, and each group of racks (76) is meshed with a rotating gear (75), and a plurality of vibrators (74) are fixedly connected to the connecting rod frame (73); Also included is a stirring mechanism, which is arranged on the connecting rod frame (73) and is used to stir the metal powder; It also includes a swing mechanism, which is arranged on the feeding pump (56) and is used to shake the metal powder.

2. A metal powder forming device for gear production as claimed in claim 1, characterized in that: Two electric push rods (51) are fixedly connected to the base (1); two push blocks (52) are respectively fixedly connected to telescopic rods of the two electric push rods (51); a moving frame (53) is slidably connected between the two push blocks (52); a limiting ring (531) is fixedly connected to the moving frame (53); two buffer springs (54) are respectively fixedly connected between the moving frame (53) and the two push blocks (52); a sealing shell (55) is fixedly connected to the moving frame (53); a feeding pump (56) is fixedly connected to the moving frame (53); and the feeding pump (56) is fixedly connected to the sealing shell (55).

3. A metal powder forming device for gear production as claimed in claim 2, characterized in that: The feeding pump (56) is provided with three feeding holes.

4. A metal powder forming device for gear production as claimed in claim 2, characterized in that: The two guide frames (61) are respectively fixedly connected to the two push blocks (52), the movable wall (62) is slidably connected to the mold (22), the lifting frame (63) is slidably connected to the movable frame (53), and a plurality of tension springs (64) are fixedly connected between the lifting frame (63) and the movable frame (53).

5. A metal powder forming device for gear production as claimed in claim 4, characterized in that: The plurality of vibrators (74) are divided into two layers, upper and lower.

6. A metal powder forming device for gear production as claimed in claim 4, characterized in that: The stirring mechanism comprises a rotating rod (81), a fixed rod frame (82), an acceleration box (83), a fixed connecting plate (84) and a scraper (85). The rotating rod (81) is rotatably connected to the sealing shell (55). A guide groove is formed on the rotating rod (81). The fixed rod frame (82) is fixedly connected to the sliding plate (72). The fixed rod frame (82) contacts the guide groove of the rotating rod (81). The input end of the acceleration box (83) is fixedly connected to the rotating rod (81). The output end of the acceleration box (83) is slidably connected to the connecting rod frame (73). The fixed connecting plate (84) is fixedly connected to the feeding pump (56). The fixed connecting plate (84) is fixedly connected to the acceleration box (83). Two vibrators (74) form a group. Six scrapers (85) are respectively fixedly connected to the six groups of vibrators (74).

7. A metal powder forming device for gear production as claimed in claim 6, characterized in that: The swing mechanism comprises a rotating spray head (91), a rotating gear rack (92) and a driven gear (93); the three rotating spray heads (91) are respectively rotatably connected to the three feeding holes of the feeding pump (56); the rotating gear rack (92) is fixedly connected to the output shaft of the speed increasing box (83); the three driven gears (93) are respectively fixedly connected to the three rotating spray heads (91); and the rotating gear rack (92) meshes with the three driven gears (93).

8. A metal powder forming device for gear production as claimed in claim 7, characterized in that: The rotating nozzle (91) is conical.

9. A metal powder forming device for gear production as claimed in claim 7, characterized in that: It also includes limiting rods (10), wherein two limiting rods (10) are slidably connected to the fixing frame (2), and the two limiting rods (10) are in contact with the movable wall (62).

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