Powder metallurgy gear forming processing equipment and method

Abstract

The present invention discloses a powder metallurgy gear forming processing equipment and method, belonging to the field of powder metallurgy, including a workbench, the upper end surface of the workbench is equipped with a support frame, the upper end surface of the support frame is equipped with a hydraulic cylinder; the upper surface of the workbench is rotatably connected with a mold plate, the mold plate is penetrated with multiple groups of evenly distributed model grooves, and the multiple groups of model grooves are distributed in a ring shape, the upper end surface of the mold plate contacts a powder box with upper and lower openings, the model groove part is arranged in the lower end opening of the powder box, and the lower end of the hydraulic cylinder penetrates the support frame and is fixedly connected with a support plate. It can be realized that when the pressing die moves upward, the model groove filled with metal powder automatically moves to the right below the pressing die, so that the metal powder in the model groove can be pressed in time when the pressing die moves downward, which simplifies the process of pressing powder gears, thereby improving the production efficiency of the product to a certain extent.

Description

Technical Field

[0001] The present invention relates to the field of powder metallurgy, and more specifically to a powder metallurgy gear forming processing equipment and method. Background Art

[0002] Powder metallurgy uses metal powder (or a mixture of metal powder and non-metallic powder) as raw material, puts the raw material into a mold, and then uses a hydraulic press to squeeze the raw material in the mold to form it into a workpiece under strong pressure. At this time, the strength of the formed workpiece is low and needs to be sintered. The sintering process can promote the adhesion between powder particles, increase the strength of the sintered body, and turn the powder particles into crystalline agglomerates. In this process, the contact area between powder particles increases, and the bonding force between atoms is enhanced, so that the powder particles in the green body are combined with each other to form a dense material with a certain strength.

[0003] Powder metallurgy molding is often used to process gears, but there are many existing processing steps, which will lead to low efficiency in mass production. For example, a powder metallurgy gear pressing molding device disclosed in a Chinese patent has the authorization announcement number CN209452801U. In the public document, powder is first filled into the mold through a filling mechanism. After the filling is completed, a pressing mechanism is used to apply pressure to the powder in the mold to form it into a gear workpiece, and then a demolding hydraulic cylinder is used to push out the workpiece in the mold, and finally a pusher plate is used to push out the mold. These steps need to be performed one by one, which will greatly reduce the output efficiency of the gear in actual production.

[0004] Also, in actual production, when adding powder to the mold, it is necessary to ensure that the powder is added evenly each time. Otherwise, the powder added to the mold each time will be uneven, which will cause the size of the molded workpiece to be unstable and the hardness of the molded workpiece will also be different. In order to ensure that the powder falls evenly in the mold, it is necessary to vibrate the parts and molds for adding powder when adding powder to ensure that the amount of powder added to the mold each time is certain. However, this operation will increase the time for adding powder, and at the same time increase the time for gear production, affecting the production efficiency of the gear. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a powder metallurgy gear forming processing equipment and method, which can realize that the model groove filled with metal powder is automatically moved to the bottom of the lower pressing die when the lower pressing die moves upward, so that the metal powder in the model groove can be pressed in time when the lower pressing die moves downward, thereby simplifying the process of pressing powder gears, thereby improving the production efficiency of the product to a certain extent.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A powder metallurgy gear forming processing equipment comprises a workbench, a support frame is installed on the upper end surface of the workbench, and a hydraulic cylinder is installed on the upper end surface of the support frame; The upper surface of the workbench is rotatably connected with a mold plate, and the mold plate is provided with multiple groups of evenly distributed model grooves, and the multiple groups of model grooves are distributed in a ring shape. The upper end surface of the mold plate contacts a powder box with upper and lower openings, and the model groove is partially arranged in the lower end opening of the powder box. The lower end of the hydraulic cylinder penetrates the support frame and is fixedly connected with a support plate, and a downward pressing mold is installed on the lower surface of the support plate; A rotating assembly is arranged between the mold plate and the workbench, and the rotating assembly is used to drive the mold plate to rotate.

[0008] Furthermore, the rotating assembly includes a sleeve, which is fixedly mounted at the center position of the upper surface of the mold plate, a moving rod is arranged in the sleeve, and the upper end of the moving rod is fixedly connected to the support plate, and the inner wall of the sleeve is provided with a plurality of groups of evenly distributed inclined slide grooves, and the number of the inclined slide grooves corresponds to the number of model grooves, the inner wall of the sleeve is provided with a first vertical groove at the lower end of the inclined slide groove, and the inner wall of the sleeve is provided with a second vertical groove at the upper end of the first vertical groove, and the oblique slide groove, the first vertical groove and the second vertical groove are connected to each other, and the second vertical groove is connected to adjacent oblique slide grooves, and a slider is arranged inside the second vertical groove, one end of the slider is mounted on the side surface of the moving rod, and a blocking assembly is provided at the connection between the oblique slide groove, the first vertical groove and the second vertical groove, and the blocking assembly is used to squeeze the slider to move into the oblique slide groove.

[0009] Furthermore, the blocking assembly includes an active cavity, which is opened at the connection between the first vertical groove and the second vertical groove. A spring is connected to the inner wall of one side of the active cavity. A moving block is fixedly connected to one end of the spring. The moving block is arranged at an angle, and the moving block and the oblique slide groove are parallel to each other. One end of the moving block away from the spring extends into the second vertical groove, and the upper end of the moving block is designed with an arc-shaped structure.

[0010] Furthermore, the blocking assembly includes a groove, which is opened at the connection between the lower end of the oblique slide and the second vertical groove. The inner wall of the groove is connected to a first spring sheet, one end of the first spring sheet is fixedly connected to a sealing plate, and one end of the sealing plate away from the first spring sheet extends into the second vertical groove. The sealing plate is arranged at an angle, and the sealing plate and the oblique slide are parallel to each other.

[0011] Furthermore, the rotating assembly includes a gear, which is arranged on the upper surface of the workbench near the mold plate, the gear is meshingly connected to the side surface of the mold plate, and the lower end surface of the gear is fixedly connected to a motor, and the motor is installed on the lower end surface of the workbench.

[0012] Furthermore, a connecting plate is fixedly connected to the side surface of the moving rod, and an end of the connecting plate away from the moving rod is fixedly connected to a demolding rod. The workbench is located directly below the demolding rod and is provided with a demolding hole, and the aperture of the demolding hole is larger than the aperture of the model groove.

[0013] Furthermore, the outer arc surface of the powder box is fixedly connected to a plurality of groups of elastic columns, one end of the elastic column away from the powder box is fixedly connected to a fixing plate, and the fixing plate is fixedly mounted on the upper surface of the workbench; The outer arc surface of the powder box is fixedly connected to multiple groups of support blocks, the lower end of the support block is fixedly connected to a second spring sheet, the lower end of the second spring sheet is fixedly connected to a magnetic ball, and the side surface of the mold plate is embedded with multiple groups of evenly distributed permanent magnet blocks, and the multiple groups of permanent magnet blocks are distributed in a ring shape, and the permanent magnet blocks and the magnetic balls are located at the same height.

[0014] Furthermore, a material receiving plate is arranged directly below the die withdrawal hole, the material receiving plate is arranged at an angle, and a plurality of connecting rods are connected between the material receiving plate and the lower end surface of the workbench.

[0015] Furthermore, the sliding block is in the shape of a round rod or a ball.

[0016] The present invention also provides a powder metallurgy gear forming method applicable to the above-mentioned gear forming method, comprising the following steps: S1: Uniform filling: During the movement of the model slot from one end of the powder box to the other end, the filling time of the model slot is extended. During the filling, the mold plate and the powder box vibrate, which facilitates the metal powder in the powder box to be filled into the model slot, ensuring that the model slot transferred from the powder box is evenly filled with metal powder, ensuring that the quality of each gear workpiece processing meets the standard; S2: Rapid prototyping: When the lower pressing die moves downward, the metal powder in the model groove is pressed. When the lower pressing die moves upward, the model groove filled with metal powder automatically moves to the bottom of the lower pressing die, so that the metal powder in the model groove can be pressed in time when the lower pressing die moves downward, which simplifies the process of pressing powder gears, thereby improving the production efficiency of the product to a certain extent; S3: Automatic demoulding: When the pressing mold moves upward, the molded workpiece will automatically move to the bottom of the demoulding rod. When the pressing mold moves downward, the demoulding rod will push the workpiece in the model groove into the demoulding hole, realizing automatic demoulding.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) In this solution, when the pressing die moves upward, the model groove filled with metal powder automatically moves to the bottom of the pressing die, so that the metal powder in the model groove can be pressed in time when the pressing die moves downward, which simplifies the process of pressing the powder gear, thereby improving the production efficiency of the product to a certain extent.

[0018] (2) This scheme prolongs the filling time while the model slot moves from one end of the powder box to the other end. During the filling process, the mold plate and the powder box vibrate to ensure that the metal powder is evenly filled into the model slot and that the metal powder in the model slot transferred out of the powder box is evenly filled, thereby ensuring the processing quality of each gear workpiece.

[0019] (3) In this scheme, when the pressing die moves upward, the molded workpiece will automatically move to the bottom of the ejection rod. When the pressing die moves downward, the ejection rod will push the workpiece in the model groove into the ejection hole, realizing automatic demolding, avoiding manual operation and saving human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an appearance view of the overall structure of the present invention; Figure 2 A top view of the overall structure of the present invention; Figure 3 This is a diagram showing the interior of the sleeve of the present invention; Figure 4 It is a cross-sectional view of the interior of the sleeve of the present invention at the moving block; Figure 5 It is a cross-sectional view of the interior of the casing of the present invention at the sealing plate; Figure 6 It is a schematic diagram of the structure of the present invention located at the slider; Figure 7 A bottom view of the overall structure of the present invention; Figure 8 It is a schematic diagram of the structure of the present invention located at the gear; Fig. 9 It is a schematic diagram of the structure of the present invention located at the mold plate.

[0021] Description of the numbers in the figure: 1. Workbench; 2. Support frame; 3. Hydraulic cylinder; 4. Support plate; 5. Pressing mold; 6. Mold plate; 7. Model slot; 8. Powder box; 9. Moving rod; 10. Sleeve; 11. Oblique slide; 12. Second vertical slot; 13. First vertical slot; 14. Slider; 15. Moving block; 16. Spring; 17. Groove; 18. First spring piece; 19. Sealing plate; 20. Motor; 21. Gear; 22. Connecting plate; 23. Ejection rod; 24. Ejection hole; 25. Connecting rod; 26. Receiving plate; 27. Elastic column; 28. Fixed plate; 29. ​​Support block; 30. Second spring piece; 31. Magnetic ball; 32. Permanent magnet; 33. Movable cavity. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0023] Example 1 See also Figure 1 to Figure 2 , a powder metallurgy gear forming processing equipment, comprising a workbench 1, a support frame 2 is installed on the upper end surface of the workbench 1, and a hydraulic cylinder 3 is installed on the upper end surface of the support frame 2; The upper surface of the workbench 1 is rotatably connected with a mold plate 6, and a plurality of groups of evenly distributed model grooves 7 are formed on the mold plate 6, and the plurality of groups of model grooves 7 are distributed in a ring shape. The upper end surface of the mold plate 6 contacts a powder box 8 with upper and lower openings, and the model grooves 7 are partially arranged in the lower end opening of the powder box 8. The lower end of the hydraulic cylinder 3 passes through the support frame 2 and is fixedly connected with a support plate 4, and a pressing mold 5 is installed on the lower surface of the support plate 4; A rotating assembly is provided between the mold plate 6 and the workbench 1, and the rotating assembly is used to drive the mold plate 6 to rotate.

[0024] When it is necessary to use metal powder to process the gear blank, first pour an appropriate amount of metal powder into the powder box 8 and then flatten it, and turn on the hydraulic cylinder 3. The hydraulic cylinder 3 is used to push the support plate 4 and the pressing mold 5 to move up and down. When the pressing mold 5 moves downward, it extends into the model groove 7, and when the pressing mold 5 moves upward, it disengages from the model groove 7. When the hydraulic cylinder 3 drives the pressing mold 5 to move upward, the rotating component will be turned on, and the rotating component will drive the mold plate 6 to rotate a certain angle, so that the model groove 7 in the powder box 8 will rotate to a position directly below the pressing mold 5. When the model groove 7 is located in the powder box 8, the metal powder in the powder box 8 will automatically enter the model groove 7. When the pressing mold 5 of the present invention moves downward and extends into the model groove 7, it can realize the pressing of the metal powder in the model groove 7, and finally presses the gear. After the pressing is completed, the pressing mold 5 moves upward, and the rotating component is turned on. The pressed gear will move synchronously with the model groove 7 The mold groove 7 filled with metal powder in the powder box 8 will move away, and the mold groove 7 filled with metal powder in the powder box 8 will move to just below the pressing mold 5. At this time, the pressed gear can be demolded, and the demolded mold groove 7 will re-enter the powder box 8 as the mold plate 6 rotates. The metal powder in the powder box 8 will be filled into the mold groove 7. During the movement of the mold groove 7 from one end of the powder box 8 to the other end, the metal powder in the powder box 8 is continuously filled into the mold groove 7. This ensures that each time the mold groove 7 is moved out of the powder box 8, the metal powder in the mold groove 7 can be filled with enough. This design simplifies the process of pressing the powder gear, thereby improving the production efficiency of the product to a certain extent. At the same time, it also ensures that the metal powder in the mold groove 7 is uniform each time the gear is pressed, thereby ensuring the quality of each product produced. The present invention is not limited to the production of pressed gears, but is also applicable to other workpieces made by pressing metal powder.

[0025] like Figures 1 to 6 As shown, the rotating assembly includes a sleeve 10, which is fixedly installed at the center of the upper surface of the mold plate 6. A moving rod 9 is arranged in the sleeve 10, and the upper end of the moving rod 9 is fixedly connected to the support plate 4. The inner wall of the sleeve 10 is provided with a plurality of evenly distributed oblique grooves 11, and the number of the oblique grooves 11 corresponds to the number of the mold grooves 7. The inner wall of the sleeve 10 is provided with a first vertical groove 13 at the lower end of the oblique groove 11, and the inner wall of the sleeve 10 is provided with a first vertical groove 13 at the upper end of the first vertical groove 13. The second vertical groove 12, and the oblique slide groove 11, the first vertical groove 13 and the second vertical groove 12 are interconnected, the second vertical groove 12 is interconnected with the adjacent oblique slide groove 11, a slider 14 is arranged inside the second vertical groove 12, the slider 14 is in the shape of a round rod or a ball, one end of the slider 14 is installed on the side surface of the moving rod 9, and a blocking component is arranged at the connection point of the oblique slide groove 11, the first vertical groove 13 and the second vertical groove 12, and the blocking component is used to squeeze the slider 14 to move into the oblique slide groove 11.

[0026] like Figures 1 to 6As shown, the blocking component includes a movable cavity 33, which is opened at the connection between the first vertical groove 13 and the second vertical groove 12. A spring 16 is connected to the inner wall of one side of the movable cavity 33, and one end of the spring 16 is fixedly connected to a moving block 15. The moving block 15 is arranged at an angle, and the moving block 15 and the oblique slide groove 11 are parallel to each other. One end of the moving block 15 away from the spring 16 extends into the second vertical groove 12, and the upper end of the moving block 15 is designed in an arc-shaped structure.

[0027] When the support plate 4 moves up and down, the present invention will also synchronously drive the moving rod 9 to move up and down. When the moving rod 9 moves downward, it will drive the slider 14 to move downward along the second vertical slot 12. Finally, the slider 14 will squeeze the arc surface of the moving block 15. After being squeezed, the moving block 15 will compress the spring 16 and enter the active cavity 33. Finally, the slider 14 will pass through the moving block 15 and enter the first vertical slot 13. At this time, the moving block 15 is no longer squeezed, and the spring 16 pushes the moving block 15 to move in the opposite direction and block the lower end of the second vertical slot 12. Finally, the slider 14 moves to the bottom of the first vertical slot 13. In the process of the slider 14 moving from the upper end of the second vertical slot 12 to the lower end of the first vertical slot 13, that is, the process of pressing the gear, after the pressing is completed, the pressing mold 5 moves upward and moves out of the mold slot 7. At this time, the slider 14 will The slider 14 moves from the bottom of the first vertical slot 13 to the bottom of the moving block 15. As the pressing mold 5 continues to move upward, the slider 14 will squeeze the moving block 15 upward and drive the sleeve 10 to rotate. The slider 14 will enter the inclined slide groove 11 and squeeze the upper side wall of the inclined slide groove 11 upward. At this time, the sleeve 10 continues to rotate. When the pressing mold 5 stops moving upward, the slider 14 moves to the top of the inclined slide groove 11, that is, the top of the adjacent second vertical slot 12. When the pressing mold 5 moves downward, the slider 14 moves downward along the second vertical slot 12 entered at this time. Because the sleeve 10 is fixedly connected to the mold plate 6, the sleeve 10 will also drive the mold plate 6 to rotate when it rotates. This design ensures that each time the pressing mold 5 moves upward, the mold plate 6 can be driven to rotate.

[0028] like Figure 7 As shown, a connecting plate 22 is fixedly connected to the side surface of the moving rod 9, and a demolding rod 23 is fixedly connected to the end of the connecting plate 22 away from the moving rod 9. A demolding hole 24 is penetrated through the workbench 1 at a position directly below the demolding rod 23, and the aperture of the demolding hole 24 is larger than the aperture of the model groove 7.

[0029] like Figure 7 As shown, a receiving plate 26 is arranged directly below the die withdrawal hole 24 . The receiving plate 26 is arranged at an angle, and a plurality of connecting rods 25 are connected between the receiving plate 26 and the lower end surface of the workbench 1 .

[0030] When the movable rod 9 moves up and down, the connecting plate 22 and the ejector rod 23 are also driven to move synchronously. When the ejector rod 23 moves downward, it extends into the ejector hole 24. That is to say, when the pressed and formed gear moves to the bottom of the ejector rod 23 as the mold plate 6 rotates, the ejector rod 23 moves downward to push the gear in the mold groove 7 into the ejector hole 24, thereby realizing automatic demoulding, avoiding manual operation, and liberating manpower. The demoulded gear falls onto the receiving plate 26 and slides downward along the slope of the receiving plate 26. A collection bucket or a collection frame can be placed under the receiving plate 26 to automatically collect the pressed gears.

[0031] like Figure 2 As shown, the outer arc surface of the powder box 8 is fixedly connected to a plurality of sets of elastic columns 27, and one end of the elastic column 27 away from the powder box 8 is fixedly connected to a fixing plate 28, and the fixing plate 28 is fixedly mounted on the upper surface of the workbench 1; The outer arc surface of the powder box 8 is fixedly connected to multiple groups of support blocks 29, the lower end of the support block 29 is fixedly connected to a second spring piece 30, the lower end of the second spring piece 30 is fixedly connected to a magnetic ball 31, and the side surface of the mold plate 6 is embedded with multiple groups of evenly distributed permanent magnet blocks 32, and the multiple groups of permanent magnet blocks 32 are distributed in a ring shape, and the permanent magnet blocks 32 and the magnetic ball 31 are at the same height.

[0032] In the present invention, when the mold plate 6 rotates, the permanent magnet block 32 is driven to rotate together. When the permanent magnet block 32 rotates to correspond to the magnetic ball 31, when the magnetic attraction of the permanent magnet block 32 to the magnetic ball 31 is greater than the attraction of the second spring piece 30, the permanent magnet block 32 will magnetically attract the magnetic ball 31, and at the same time, the second spring piece 30 will bend and deform, so that the magnetic ball 31 hits the mold plate 6, and the metal powder in the powder box 8 is facilitated to fill the mold groove 7 through the vibration of the mold plate 6. As the mold plate 6 rotates, when the permanent magnet block 32 is away from the magnetic ball 31, the permanent magnet block 32 will attract the magnetic ball 31. When the magnetic attraction of the magnetic ball 31 weakens and the magnetic attraction force is less than the elastic force of the second spring piece 30, the bent second spring piece 30 will reset and vibrate at the same time, thereby driving the powder box 8 to vibrate. The vibration of the powder box 8 further facilitates the metal powder in the powder box 8 to be filled into the model groove 7, ensuring that the model groove 7 transferred from the powder box 8 is evenly filled with metal powder, ensuring that the processing quality of each gear workpiece meets the standard. It should be noted that the magnetic ball 31 can be made of iron material, or cobalt, nickel and alloy materials containing iron, cobalt and nickel.

[0033] Example 2 like Figures 1 to 6As shown, the blocking assembly includes a groove 17, which is opened at the connection point between the lower end of the inclined slide 11 and the second vertical groove 12. The inner wall of the groove 17 is connected to a first spring piece 18, and one end of the first spring piece 18 is fixedly connected to a baffle plate 19. The baffle plate 19 extends from one end of the first spring piece 18 to the second vertical groove 12. The baffle plate 19 is arranged at an angle, and the baffle plate 19 and the inclined slide 11 are parallel to each other.

[0034] When the slider 14 moves downward along the second vertical groove 12, Example 2 is different from Example 1 in that the slider 14 squeezes the baffle plate 19 to deflect downward, and at the same time the first spring plate 18 is bent and deformed, and finally the slider 14 passes through the baffle plate 19 and enters the first vertical groove 13. When the slider 14 moves upward along the first vertical groove 13, it will finally squeeze the baffle plate 19. Because part of the baffle plate 19 is in the groove 17, it is restricted by the inner wall of the groove 17 and cannot rotate upward. At this time, the slider 14 squeezes the baffle plate 19 to drive the sleeve 10 to rotate, and finally enters the adjacent inclined slide groove 11 and squeezes the upper side wall of the inclined slide groove 11, thereby realizing the rotation of the sleeve 10 and then the rotation of the mold plate 6.

[0035] Example 3 like Figures 8 to 9 As shown, the rotating assembly includes a gear 21, which is arranged on the upper surface of the workbench 1 near the mold plate 6, and the gear 21 is meshed with the side surface of the mold plate 6. The lower end surface of the gear 21 is fixedly connected to the motor 20, and the motor 20 is installed on the lower end surface of the workbench 1.

[0036] When the pressing mold 5 moves upward, the motor 20 will drive the gear 21 to rotate. When the gear 21 rotates, it will drive the meshing mold plate 6 to rotate. When the pressing mold 5 moves downward, the motor 20 will not drive the gear 21 to rotate, and will not drive the mold plate 6 to rotate. Compared with the rotating assembly in Example 1, the rotating assembly in Example 3 has a simpler structure and is easier to implement in actual production, but there are also certain problems. First, it is necessary to set a corresponding driver program for the motor 20. During actual use, if the motor 20 loses step or loses step, it is easy to cause the model slot 7 to fail to move accurately to the bottom of the pressing mold 5, resulting in the pressing mold 5 being unable to extend into the model slot 7 to press the metal powder when pressing down. Compared with the rotating assembly in Example 3, the rotating assembly in Example 1 has a complex structure, but is more stable in actual use.

[0037] The present invention also provides a powder metallurgy gear forming method applicable to the above-mentioned gear forming method, comprising the following steps: S1: Uniform filling: During the movement of the model slot 7 from one end of the powder box 8 to the other end, the filling time of the model slot 7 is extended. During the filling, the mold plate 6 and the powder box 8 vibrate, which facilitates the metal powder in the powder box 8 to be filled into the model slot 7, ensuring that the model slot 7 transferred from the powder box 8 is evenly filled with metal powder, ensuring that the quality of each gear workpiece processing meets the standard; S2: Rapid prototyping: When the pressing die 5 moves downward, the metal powder in the model groove 7 is pressed. When the pressing die 5 moves upward, the model groove 7 filled with the metal powder automatically moves to the bottom of the pressing die 5, so that the metal powder in the model groove 7 can be pressed in time when the pressing die 5 moves downward, which simplifies the process of pressing the powder gear, thereby improving the production efficiency of the product to a certain extent; S3: Automatic demolding: When the pressing mold 5 moves upward, the molded workpiece will automatically move to the bottom of the demolding rod 23. When the pressing mold 5 moves downward, the demolding rod 23 will push the workpiece in the mold groove 7 into the demolding hole 24, realizing automatic demolding.

[0038] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A powder metallurgy gear forming processing equipment, comprising a workbench, a support frame is installed on the upper end surface of the workbench, and a hydraulic cylinder is installed on the upper end surface of the support frame; Features: The upper surface of the workbench is rotatably connected with a mold plate, and the mold plate is provided with multiple groups of evenly distributed model grooves, and the multiple groups of model grooves are distributed in a ring shape. The upper end surface of the mold plate contacts a powder box with upper and lower openings, and the model groove is partially arranged in the lower end opening of the powder box. The lower end of the hydraulic cylinder penetrates the support frame and is fixedly connected with a support plate, and a downward pressing mold is installed on the lower surface of the support plate; A rotating assembly is provided between the mold plate and the workbench, and the rotating assembly is used to drive the mold plate to rotate; The rotating assembly includes a sleeve, which is fixedly installed at the center position of the upper surface of the mold plate, and a moving rod is arranged in the sleeve, and the upper end of the moving rod is fixedly connected to the support plate, and the inner wall of the sleeve is provided with a plurality of groups of evenly distributed inclined slide grooves, and the number of the inclined slide grooves corresponds to the number of the model grooves. The inner wall of the sleeve is provided with a first vertical groove at the lower end of the inclined slide groove, and the inner wall of the sleeve is provided with a second vertical groove at the upper end of the first vertical groove, and the inclined slide groove, the first vertical groove and the second vertical groove are connected to each other, and the second vertical groove is connected to the adjacent inclined slide grooves, and a slider is arranged inside the second vertical groove, one end of the slider is installed on the side surface of the moving rod, and a blocking assembly is arranged at the connection between the inclined slide groove, the first vertical groove and the second vertical groove, and the blocking assembly is used to squeeze the slider to move into the inclined slide groove.

2. The powder metallurgy gear forming processing equipment according to claim 1, characterized in that: The blocking assembly includes an active cavity, which is opened at the connection between the first vertical groove and the second vertical groove. A spring is connected to the inner wall of one side of the active cavity. A moving block is fixedly connected to one end of the spring. The moving block is arranged at an angle, and the moving block and the oblique slide groove are parallel to each other. One end of the moving block away from the spring extends into the second vertical groove, and the upper end of the moving block is designed with an arc-shaped structure.

3. The powder metallurgy gear forming processing equipment according to claim 2, characterized in that: The blocking assembly includes a groove, which is opened at the connection point between the lower end of the oblique slide and the second vertical groove. The inner wall of the groove is connected to a first spring sheet, one end of the first spring sheet is fixedly connected to a sealing plate, and one end of the sealing plate away from the first spring sheet extends into the second vertical groove. The sealing plate is arranged at an angle, and the sealing plate and the oblique slide are parallel to each other.

4. The powder metallurgy gear forming processing equipment according to claim 3, characterized in that: A connecting plate is fixedly connected to the side surface of the moving rod, and an end of the connecting plate away from the moving rod is fixedly connected to a demolding rod. A demolding hole is penetrated through the workbench at a position directly below the demolding rod, and the aperture of the demolding hole is larger than the aperture of the model groove.

5. The powder metallurgy gear forming processing equipment according to claim 4, characterized in that: The outer arc surface of the powder box is fixedly connected to a plurality of groups of elastic columns, and one end of the elastic column away from the powder box is fixedly connected to a fixing plate, and the fixing plate is fixedly mounted on the upper surface of the workbench; The outer arc surface of the powder box is fixedly connected to multiple groups of support blocks, the lower end of the support block is fixedly connected to a second spring sheet, the lower end of the second spring sheet is fixedly connected to a magnetic ball, and the side surface of the mold plate is embedded with multiple groups of evenly distributed permanent magnet blocks, and the multiple groups of permanent magnet blocks are distributed in a ring shape, and the permanent magnet blocks and the magnetic balls are located at the same height.

6. The powder metallurgy gear forming processing equipment according to claim 5, characterized in that: A material receiving plate is arranged directly below the die withdrawal hole, the material receiving plate is arranged in an inclined manner, and a plurality of connecting rods are connected between the material receiving plate and the lower end surface of the workbench.

7. The powder metallurgy gear forming processing equipment according to claim 6, characterized in that: The sliding block is in the shape of a round rod or a ball.

8. A powder metallurgy gear forming method suitable for the powder metallurgy gear forming equipment according to claim 7, characterized in that: The steps include: S1: Uniform filling: During the movement of the model slot from one end of the powder box to the other end, the filling time of the model slot is extended. During the filling, the mold plate and the powder box vibrate, which facilitates the metal powder in the powder box to be filled into the model slot. It ensures that the model slot transferred from the powder box is evenly filled with metal powder, ensuring that the quality of each gear workpiece processing meets the standard; S2: Rapid prototyping: When the pressing die moves downward, the metal powder in the model groove is pressed. When the pressing die moves upward, the model groove filled with metal powder automatically moves to the bottom of the pressing die, so that the metal powder in the model groove can be pressed in time when the pressing die moves downward, which simplifies the process of pressing powder gears. S3: Automatic demoulding: When the pressing mold moves upward, the molded workpiece will automatically move to the bottom of the demoulding rod. When the pressing mold moves downward, the demoulding rod will push the workpiece in the model groove into the demoulding hole, realizing automatic demoulding.

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