Novel powder metallurgy gear pressing die

Abstract

The utility model relates to the technical field of pressing dies, and discloses a novel powder metallurgy gear pressing die which comprises a workbench, supporting rods are fixed to the four corners of the bottom of the workbench, a supporting frame is fixed to the top of the workbench, and an air cylinder is fixed to the top face of the supporting frame; through cooperative use of the bidirectional threaded rod, the moving block and the connecting plate, the use height of the guide rod and the mounting piece is conveniently adjusted, and the mounting piece is used for guiding and supporting; compared with the prior art, it is guaranteed that the gear cannot deform in the disengaging process, and meanwhile the gear can smoothly move along a preset track during disengaging through the design of the second guide groove and the guide rod; through cooperative use of a second screw rod, a conical column, a rotary knob, a fixing block, a conical groove and an avoiding groove, the use position of the conical column is convenient to adjust; compared with the prior art, the mold has the effect that the upper mold and the lower mold with different sizes can be conveniently cleaned, maintained or replaced.

Description

Technical Field

[0001] The present application relates to the technical field of pressing dies, and in particular to a novel powder metallurgy gear pressing die. Background Art

[0002] Powder metallurgy is a process that uses a pressing machine to press metal powder into fixed shapes such as cakes and steps, and then sinter them to make metal products. The manufacture of gears using powder metallurgy technology requires multiple processes such as powder making, molding, sintering and post-processing. During the molding process, the powder material is placed in a mold and pressed into shape under a certain pressure.

[0003] The existing pressing molds have some problems during use. When the mold is pressed and formed, the mold will be completely embedded in the groove of the lower mold, which makes the mold removal process inconvenient and requires more time and effort. Secondly, if it is not removed properly, it may also cause damage to the product, thereby reducing the production efficiency of the gear. In order to solve these problems, we urgently need to develop a new type of powder metallurgy gear pressing mold.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that when the mold is pressed into shape, the mold will be completely embedded in the groove of the lower mold, making the mold removal process inconvenient and requiring more time and effort. Secondly, if the mold is not removed properly, it may also cause damage to the product, thereby reducing the production efficiency of the gear, the present application provides a new powder metallurgy gear pressing mold.

[0006] The novel powder metallurgy gear pressing die provided in this application adopts the following technical solution:

[0007] A novel powder metallurgy gear pressing die comprises a workbench, support rods are fixed to the four corners of the bottom of the workbench, a support frame is fixed to the top, a cylinder is fixed to the top surface of the support frame, the output end of the cylinder passes through the support frame and is equipped with a detachable upper die, a lower die that cooperates with the upper die is installed on the workbench, two symmetrically distributed first screws are fixed to the bottom end of the lower die, the two first screws both penetrate the workbench and are threadedly mounted with nuts, a second guide groove is provided on the workbench below the lower die, a guide rod penetrates the second guide groove, a mounting plate is threadedly mounted on one end of the guide rod, a first guide groove for the guide rod to penetrate is provided on the lower die, and a mounting groove for the mounting plate to be embedded is provided on the lower die;

[0008] It also includes a height-adjustable moving component and two sets of connecting components for fixing the upper mold. The guide rod is slidably connected to the workbench through the moving component. The moving component can drive the guide rod to move, so that the pressed gear can smoothly detach from the molding groove of the lower mold. The moving component is connected to the workbench, and the connecting component is connected to the upper mold.

[0009] Preferably, the moving component includes a U-shaped plate fixedly connected to the bottom of the workbench, a bidirectional threaded rod is rotatably connected to the U-shaped plate, a motor for driving the bidirectional threaded rod to rotate is also installed on the U-shaped plate, two symmetrically distributed moving blocks are threadedly installed on the bidirectional threaded rod, the top surfaces of the two moving blocks are connected to connecting plates via a rotating shaft, one side of the two connecting plates is connected to an adjusting plate via a rotating shaft, and the guide rod is fixedly connected to the adjusting plate.

[0010] Preferably, the connecting assembly also includes a fixed block fixed on the output end of the cylinder, a sleeve for being sleeved on the output end of the cylinder is fixed on the top surface of the upper mold, the outer wall of the sleeve is connected to a second screw via a rotating shaft, a conical column is threadedly mounted on the outer wall of the second screw, a knob is fixed to one end of the conical column, a conical groove for inserting the conical column is provided on the fixing block, and an avoidance groove for the second screw to pass through is provided on one side of the fixing block.

[0011] Preferably, the outer surface of the knob is provided with anti-slip grooves.

[0012] Preferably, the two connecting plates are both made of metal.

[0013] Preferably, the sum of the heights of the workbench and the lower mold is less than the height of the guide rod.

[0014] Preferably, the diameter of the second screw is smaller than the width of the avoidance groove.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] 1. The use height of the guide rod and the mounting plate can be adjusted conveniently by using the bidirectional threaded rod, the moving block and the connecting plate, and the mounting plate can be used for guiding and supporting. Compared with the prior art, the invention can ensure that the gear will not be deformed during the disengagement process. At the same time, the design of the second guide groove and the guide rod enables the gear to move smoothly along the predetermined trajectory when disengaging.

[0017] 2. By using the second screw, the tapered column, the knob, the fixed block, the tapered groove and the avoidance groove in coordination, it is convenient to adjust the use position of the tapered column; compared with the prior art, it is convenient to clean, maintain or replace upper molds and lower molds of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a bottom-view three-dimensional structural schematic diagram of a workbench according to an embodiment of the present application;

[0020] Figure 3 It is a schematic cross-sectional structure diagram of a workbench according to an embodiment of the present application;

[0021] Figure 4 This is an embodiment of the present application Figure 3 A schematic diagram of the enlarged structure at point A;

[0022] Figure 5 This is an embodiment of the present application Figure 3 Schematic diagram of the enlarged structure at B.

[0023] Explanation of the accompanying drawings: 1. workbench; 2. support rod; 3. support frame; 4. cylinder; 5. upper mold; 6. lower mold; 7. first guide groove; 8. mounting groove; 9. second guide groove; 10. U-shaped plate; 11. bidirectional threaded rod; 12. motor; 13. moving block; 14. connecting plate; 15. adjusting plate; 16. guide rod; 17. mounting plate; 18. first screw; 19. nut; 20. sleeve; 21. second screw; 22. conical column; 23. knob; 24. fixing block; 25. conical groove; 26. avoidance groove. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 -Attached Figure 5 This application is described in further detail.

[0025] The present application embodiment discloses a novel powder metallurgy gear pressing die. Figure 1-Figure 5A novel powder metallurgy gear pressing die comprises a workbench 1, support rods 2 are fixed at the four corners of the bottom of the workbench 1, a support frame 3 is fixed at the top, a cylinder 4 is fixed on the top surface of the support frame 3, the output end of the cylinder 4 passes through the support frame 3, and is equipped with a detachable upper die 5, a lower die 6 cooperating with the upper die 5 is installed on the workbench 1, two symmetrically distributed first screws 18 are fixed at the bottom end of the lower die 6, the two first screws 18 both penetrate the workbench 1 and are threadedly installed with nuts 19, a second guide groove 9 is provided on the workbench 1 below the lower die 6, a guide rod 16 penetrates the second guide groove 9, one end of the guide rod 16 is threadedly installed with a mounting plate 17, a first guide groove 7 for the guide rod 16 to penetrate is provided on the lower die 6, and a mounting groove 8 for the mounting plate 17 to be embedded is provided on the lower die 6;

[0026] It also includes a height-adjustable moving component and two sets of connecting components for fixing the upper mold 5. The guide rod 16 is slidably connected to the workbench 1 through the moving component. The moving component can drive the guide rod 16 to move, so that the pressed gear can smoothly escape from the molding groove of the lower mold 6. The moving component is connected to the workbench 1, and the connecting component is connected to the upper mold 5. When in use, first, put the powder metallurgy material into the molding groove of the lower mold 6, and start the cylinder 4 so that the upper mold 5 and the lower mold 6 cooperate with each other, and the powder metallurgy material will be evenly compressed. When the powder metallurgy material is extruded and the shape and size of the gear meet the preset requirements, start the cylinder 4 again to separate the upper mold 5 from the lower mold 6, and the gear can be smoothly separated from the molding groove of the lower mold 6. During the disengagement process, the guide rod 16 can be moved upward by the height-adjustable characteristics of the moving component, and the mounting plate 17 is used for guiding and supporting to ensure that the gear will not be deformed during the disengagement process. At the same time, the design of the second guide groove 9 and the guide rod 16 enables the gear to move smoothly along the predetermined trajectory during disengagement, thereby improving the molding accuracy of the gear. The two sets of connecting components ensure the stability of the upper mold 5 when fixed, thereby ensuring the smooth progress of the pressing process. After completing the gear pressing, the powder metallurgy gear pressing mold can be cleaned and maintained by disassembling the upper mold 5 and the lower mold 6. The upper mold 5 and the lower mold 6 are respectively removed from the support frame 3 and the workbench 1, the residual powder metallurgy material is cleaned, and then reinstalled to prepare for the next pressing.

[0027] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The moving assembly includes a U-shaped plate 10 fixedly connected to the bottom of the workbench 1, a bidirectional threaded rod 11 is rotatably connected to the U-shaped plate 10, a motor 12 for driving the bidirectional threaded rod 11 to rotate is also installed on the U-shaped plate 10, two symmetrically distributed moving blocks 13 are installed on the bidirectional threaded rod 11 through threads, the top surfaces of the two moving blocks 13 are connected to connecting plates 14 through rotating shafts, one side of the two connecting plates 14 is connected to an adjusting plate 15 through a rotating shaft, and a guide rod 16 is fixedly connected to the adjusting plate 15; the bidirectional threaded rod 11 is driven by the motor 12 to rotate clockwise or counterclockwise The clockwise rotation causes the moving block 13 to move left or right along the thread, thereby realizing the lifting and lowering of the guide rod 16. When the mounting plate 17 reaches the required height, the pressed gear can be easily removed. This design enables the mounting plate 17 to have better mobility and stability, and can meet the needs of various work scenarios. In addition, the design of the connecting plate 14 and the adjusting plate 15 enables the moving assembly to have a strong load-bearing capacity and can cope with different workloads, and the fixed connection between the U-shaped plate 10 and the bottom of the workbench 1 ensures the stability and safety of the entire moving assembly.

[0028] Reference Figure 1 and Figure 5 The connection assembly also includes a fixing block 24 fixed on the output end of the cylinder 4, a sleeve 20 for being sleeved on the output end of the cylinder 4 is fixed on the top surface of the upper mold 5, the outer wall of the sleeve 20 is connected to the second screw 21 through a rotating shaft, the outer wall of the second screw 21 is threadedly mounted with a conical column 22, one end of the conical column 22 is fixed with a knob 23, a conical groove 25 for the conical column 22 to be inserted is provided on the fixing block 24, and an avoidance groove 26 for the second screw 21 to pass through is provided on one side of the fixing block 24; when in use, first, the upper mold 5 is sleeved on the output end of the cylinder 4 through the sleeve 20, and then, by turning over the second screw 21, it passes through the avoidance groove 26, and Located on the conical groove 25, the knob 23 is rotated clockwise to move the conical column 22 downward along the height of the second screw 21, and the conical column 22 can be inserted into the conical groove 25, thereby fixing the position of the upper mold 5. At the same time, through the design of this connecting component, the bottom of the output end of the cylinder 4 can be tightly fitted with the top of the upper mold 5, thereby improving the pressing accuracy of the mold. In the process of the upper mold 5 pressing the mold, the top of the upper mold 5 will be against the bottom of the output end of the cylinder 4, thereby preventing the second screw 21 and the conical column 22 from being squeezed, thereby avoiding damage to the thread line on the second screw 21 and extending the service life of the parts.

[0029] Reference Figure 5 The outer surface of the knob 23 is provided with anti-slip grooves, which facilitates the user to rotate the conical column 22.

[0030] Reference Figure 3The two connecting plates 14 are both made of metal, which is not easy to break or bend, thus extending the service life of the components.

[0031] Reference Figure 3 and Figure 4 The sum of the heights of the workbench 1 and the lower mold 6 is less than the height of the guide rod 16; this facilitates the guide rod 16 to penetrate the workbench 1 and the lower mold 6, thereby facilitating the removal of the pressed gear.

[0032] Reference Figure 5 The diameter of the second screw rod 21 is smaller than the width of the avoidance groove 26 , so that the second screw rod 21 can pass through easily and avoid being rubbed by the inner wall of the avoidance groove 26 .

[0033] The implementation principle of a novel powder metallurgy gear pressing die in the embodiment of the present application is as follows: when in use, first, put the powder metallurgy material into the molding groove of the lower die 6, and start the cylinder 4 so that the upper die 5 and the lower die 6 cooperate with each other, and the powder metallurgy material will be evenly compressed. When the powder metallurgy material is extruded and formed, and the shape and size of the gear meet the preset requirements, start the cylinder 4 again to separate the upper die 5 from the lower die 6, and then drive the bidirectional threaded rod 11 to rotate clockwise or counterclockwise through the motor 12, so that the moving block 13 moves left or right along the thread, so that the guide rod 16 can move upward, and the mounting plate 17 is used for guidance and support. Ensure that the gear will not be deformed during the disengagement process. At the same time, the design of the second guide groove 9 and the guide rod 16 enables the gear to move smoothly along the predetermined trajectory when disengaging, thereby improving the molding accuracy of the gear. When the mounting plate 17 reaches the required height, the pressed and formed gear can be easily taken out. Such a design enables the mounting plate 17 to have better mobility and stability, and can meet the needs of various working scenes. In addition, the design of the connecting plate 14 and the adjusting plate 15 enables the mobile assembly to have a strong load-bearing capacity and can cope with different workloads. The fixed connection between the U-shaped plate 10 and the bottom of the workbench 1 ensures the stability and safety of the entire mobile assembly.

[0034] When it is necessary to clean or replace the upper mold 5 and the lower mold 6 of different sizes, the nut 19, the mounting plate 17 and the knob 23 can be rotated counterclockwise to disengage them from the first screw 18, the guide rod 16 and the second screw 21 respectively, so that the upper mold 5 and the lower mold 6 can be disassembled, which is convenient for cleaning, maintenance or replacement of the upper mold 5 and the lower mold 6 of different sizes, and then reinstalled to prepare for the next pressing.

[0035] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0036] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0037] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A novel powder metallurgy gear pressing die, comprising a workbench (1), characterized in that: The four corners of the bottom of the workbench (1) are fixed with support rods (2), and the top is fixed with a support frame (3). The top surface of the support frame (3) is fixed with a cylinder (4). The output end of the cylinder (4) passes through the support frame (3) and is equipped with a detachable upper mold (5). The workbench (1) is equipped with a lower mold (6) that cooperates with the upper mold (5). The bottom end of the lower mold (6) is fixed with two symmetrically distributed first screws (18). The two first screws (18) are A nut (19) passes through the workbench (1) and is threadedly mounted thereon; a second guide groove (9) is provided on the workbench (1) below the lower mold (6); a guide rod (16) passes through the second guide groove (9); a mounting plate (17) is threadedly mounted on one end of the guide rod (16); a first guide groove (7) for the guide rod (16) to pass through is provided on the lower mold (6); and a mounting groove (8) for the mounting plate (17) to be embedded is provided on the lower mold (6); It also includes a height-adjustable moving component and two sets of connecting components for fixing the upper mold (5); the guide rod (16) is slidably connected to the workbench (1) via the moving component; the moving component can drive the guide rod (16) to move, so that the pressed gear can smoothly escape from the molding groove of the lower mold (6); the moving component is connected to the workbench (1), and the connecting component is connected to the upper mold (5).

2. The novel powder metallurgy gear pressing die according to claim 1 is characterized in that: The moving assembly comprises a U-shaped plate (10) fixedly connected to the bottom of the workbench (1), a bidirectional threaded rod (11) being rotatably connected to the U-shaped plate (10), a motor (12) for driving the bidirectional threaded rod (11) to rotate being also mounted on the U-shaped plate (10), two symmetrically distributed moving blocks (13) being threadedly mounted on the bidirectional threaded rod (11), the top surfaces of the two moving blocks (13) being connected to connecting plates (14) via rotating shafts, one side of the two connecting plates (14) being connected to adjusting plates (15) via rotating shafts, and the guide rod (16) being fixedly connected to the adjusting plate (15).

3. The novel powder metallurgy gear pressing die according to claim 1 is characterized in that: The connection assembly also includes a fixing block (24) fixed on the output end of the cylinder (4); a sleeve (20) for sleeved on the output end of the cylinder (4) is fixed on the top surface of the upper mold (5); the outer wall of the sleeve (20) is connected to a second screw (21) via a rotating shaft; the outer wall of the second screw (21) is threadedly mounted with a conical column (22); a knob (23) is fixed to one end of the conical column (22); a conical groove (25) for inserting the conical column (22) is provided on the fixing block (24); and an avoidance groove (26) for the second screw (21) to pass through is provided on one side of the fixing block (24).

4. The novel powder metallurgy gear pressing die according to claim 3 is characterized in that: The outer surface of the knob (23) is provided with anti-slip grooves.

5. The novel powder metallurgy gear pressing die according to claim 2 is characterized in that: The two connecting plates (14) are both made of metal.

6. The novel powder metallurgy gear pressing die according to claim 1 is characterized in that: The sum of the heights of the workbench (1) and the lower mold (6) is less than the height of the guide rod (16).

7. The novel powder metallurgy gear pressing die according to claim 3 is characterized in that: The diameter of the second screw (21) is smaller than the width of the avoidance groove (26).

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