A powder metallurgical forming die for a part

Abstract

The application provides a part powder metallurgy forming die, which comprises a machining table and a fixing frame arranged on the top of the machining table, a telescopic cylinder is assembled on the fixing frame, the telescopic end of the telescopic cylinder is vertically downward, an extension rod is fixedly installed, a pressing module is arranged at the bottom end of the extension rod, the pressing module is coaxially matched with a die groove arranged on the top of the machining table, a reciprocating mechanism moving along the horizontal direction is arranged on one side of the die groove, the reciprocating mechanism is in transmission connection with the extension rod, a pushing plate is arranged on the side close to the die groove, a material box is arranged between the pushing plate and the die groove, a feeding port is arranged on the top of the material box, a discharging port is arranged on the bottom of the material box, and the material box is fixedly installed on the top of the machining table through a supporting frame. In the application, the pushing plate reciprocates along the horizontal direction, the powder raw material on the top of the machining table is pushed into the die groove, and the excessive powder raw material is scraped, so that the powder raw material is uniformly distributed in the die groove, and the quality of the die casting part is good.

Description

Technical Field

[0001] This invention relates to the field of metal powder manufacturing technology, and more specifically to a powder metallurgy forming mold for parts. Background Technology

[0002] Powder metallurgy uses metal powder as raw material and produces parts through processes such as pressing, forming, and sintering. In this process, the main function of powder metallurgy forming molds is to press and form metal powder according to design requirements and ensure the dimensional and shape accuracy of the parts. Powder metallurgy forming molds have a wide range of applications and are suitable for manufacturing various parts and tools with complex shapes, high dimensional accuracy, and special material requirements.

[0003] When using powder metallurgy forming molds, powder raw materials need to be added into the mold cavity through a feeding mechanism. In the existing technology, pump body suction is usually used to achieve this. This feeding method can easily lead to uneven distribution of powder raw materials in the mold cavity, thereby affecting the quality of parts formed by subsequent die casting. Summary of the Invention

[0004] 1. The technical problem that the invention aims to solve:

[0005] This invention provides a powder metallurgy forming mold for parts, which solves the technical problems existing in the background art.

[0006] 2. Technical Solution:

[0007] To achieve the above objectives, the technical solution provided by the present invention is as follows: a powder metallurgy forming mold for parts, including a processing table and a fixed frame set on its top, wherein a telescopic cylinder is assembled on the fixed frame, the telescopic end of the telescopic cylinder is vertically downward and is fixedly installed with an extension rod, and a pressure module is provided at the bottom end of the extension rod, and the pressure module is coaxially matched with the mold groove opened on the top of the processing table.

[0008] A reciprocating mechanism that moves in the horizontal direction is provided on one side of the mold groove. The reciprocating mechanism is connected to the extension rod in a driving connection, and a pusher plate is provided on the side close to the mold groove.

[0009] A material box is provided between the pusher plate and the mold groove. The material box has an inlet at the top and an outlet at the bottom, and is fixedly installed on the top of the processing table by a support frame.

[0010] Furthermore, limit plates are provided on both sides of the pusher plate.

[0011] Furthermore, the reciprocating mechanism includes a fixedly installed assembly plate, on which a slide rail extending in a horizontal direction is provided. A slider is slidably installed in the slide rail, and a toothed plate is fixedly installed on the slider. The end of the toothed plate and the pusher plate are fixedly connected by a connecting plate. A first sector gear and a second sector gear mesh on the toothed plate and are distributed opposite to each other. Both sector gears are rotatably installed on the assembly plate, and the rotating shafts are respectively fixedly installed with the first gear and the second gear meshing with each other.

[0012] Furthermore, a first transmission rod is rotatably mounted on the support plate at the top of the processing table. A third gear is provided on the first transmission rod, and it is connected to the rotating shaft of one of the sector gears through a first belt drive assembly. The third gear matches the first tooth groove opened on one side of the extension rod.

[0013] Furthermore, the third gear is rotatably mounted on the first transmission rod, and the rotation axis is a one-way shaft.

[0014] Furthermore, a support is provided on the top of the processing table, and a movable rod extending vertically is slidably mounted on the support. The top of the movable rod abuts against a guide plate, and a vertical plate is provided on the top of the guide plate. The vertical plate is rotatably mounted on the bottom of the material box, and a torsion spring is provided on the rotating shaft.

[0015] Furthermore, a horizontal plate is fixedly installed on the connecting plate by a connecting rod. The top of the horizontal plate has a first groove and a second groove sequentially formed along the direction close to the mold groove. The second groove matches the trapezoidal block set at the bottom of the movable rod. The length of the first groove is greater than that of the second groove, and a slope is provided near the inner wall of the second groove. The slope matches the inclined side of the trapezoidal block.

[0016] Furthermore, a stirring rod is rotatably installed inside the material box, the stirring rod extends to the top of the material box, and a worm gear is fixedly installed thereon. The worm gear meshes with a worm rotatably installed on the top of the material box. The worm is connected to a second transmission rod through a second belt drive assembly. The second transmission rod is rotatably installed on the fixed frame, and a fourth gear is fixedly installed at its end. The fourth gear meshes with a second tooth groove opened on the other side of the extension rod.

[0017] Furthermore, a movable block is matched and arranged inside the mold groove, and a spring is provided at the bottom of the movable block. The other end of the spring is fixedly connected to the bottom of the mold groove.

[0018] Furthermore, the processing table has a through groove located on the side of the mold groove away from the push plate, and a collection box with an open top is placed below it.

[0019] 3. Beneficial effects:

[0020] Compared with the prior art, the technical solution provided by the present invention has the following advantages: the reciprocating mechanism can drive the pusher plate to reciprocate in the horizontal direction, push the powder material on the top of the processing table into the mold groove, and scrape off the excess powder material, so that the powder material is flush with the top of the processing table, thereby ensuring that the powder material is evenly distributed in the mold groove and the die-cast parts have good quality.

[0021] The reciprocating mechanism and the extension rod are connected by a lifting transmission, which can maintain synchronous linkage to achieve processing while eliminating the need for an additional drive source, thereby reducing the cost of use. Furthermore, the reciprocating mechanism is connected to the material box's unloading transmission, which can further reduce the cost of use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the reciprocating mechanism structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the guide plate transmission structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of the material box of the present invention.

[0027] Figure 6 This is a schematic diagram of the extension rod transmission structure of the present invention.

[0028] Figure 7 This is a schematic diagram of the internal structure of the mold groove of the present invention.

[0029] Figure label:

[0030] 1. Processing table; 101. Mold groove; 102. Through groove; 2. Fixing frame; 3. Telescopic cylinder; 4. Extension rod; 401. First tooth groove; 402. Second tooth groove; 5. Pressing module; 6. Reciprocating mechanism; 61. Assembly plate; 62. Slide rail; 63. Slider; 64. Tooth plate; 65. Connecting plate; 66. First gear; 67. Second gear; 68. First sector gear; 69. Second sector gear; 7. Push plate; 8. Material box; 801. Inlet; 802. Outlet; 9. Support frame; 10. 11. Limiting plate; 12. First transmission rod; 13. Third gear; 14. First belt drive assembly; 15. Guide plate; 16. Vertical plate; 17. Horizontal plate; 18. First groove; 19. Second groove; 20. Slope; 21. Connecting rod; 22. Bracket; 23. Movable rod; 24. Trapezoidal block; 25. Collection box; 26. Stirring rod; 27. Worm gear; 28. Worm; 29. ​​Second transmission rod; 20. Second belt drive assembly; 21. Fourth gear; 22. Movable block; 20. Spring. Detailed Implementation

[0031] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "page," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example

[0035] See attached document Figure 1-7 A powder metallurgical forming mold for parts includes a processing table 1 and a fixed frame 2 set on its top. A telescopic cylinder 3 is mounted on the fixed frame 2. The telescopic end of the telescopic cylinder 3 is vertically downward and is fixedly installed with an extension rod 4. A pressure module 5 is set at the bottom end of the extension rod 4. The pressure module 5 is coaxially matched with the mold groove 101 opened on the top of the processing table 1.

[0036] A reciprocating mechanism 6 that moves in the horizontal direction is provided on one side of the mold groove 101. The reciprocating mechanism 6 is connected to the extension rod 4 in a transmission manner, and a pusher plate 7 is provided on the side close to the mold groove 101.

[0037] A material box 8 is provided between the pusher plate 7 and the mold groove 101. The material box 8 has an inlet 801 at the top and an outlet 802 at the bottom, and is fixedly installed on the top of the processing table 1 by a support frame 9.

[0038] In this embodiment, after the powder raw material is added to the material box 8 through the feed port 801, the powder raw material falls to the top of the processing table 1 through the discharge port 802. At this time, the reciprocating mechanism 6 is started and drives the pusher plate 7 to reciprocate in the horizontal direction, thereby pushing the powder raw material on the top of the processing table 1 into the mold groove 101 and scraping off the excess powder raw material so that the powder raw material is flush with the top of the processing table 1, thereby ensuring that the powder raw material is evenly distributed in the mold groove 101. At this time, the telescopic cylinder 3 is started to drive the extension rod 4 to descend, and the pressing module 5 descends synchronously to press the powder raw material in the mold groove 101 into parts. The reciprocating mechanism 6 is connected to the extension rod 4 to achieve the purpose of reducing costs.

[0039] Limiting plates 10 are provided on both sides of the pusher plate 7 to limit the powder raw material and prevent it from extending to both sides of the pusher plate 7.

[0040] The reciprocating mechanism 6 includes a fixedly installed assembly plate 61. A slide rail 62 extending horizontally is provided on the assembly plate 61. A slider 63 is slidably installed in the slide rail 62. A toothed plate 64 is fixedly installed on the slider 63. The end of the toothed plate 64 and the pusher plate 7 are fixedly connected by a connecting plate 65. A first sector gear 68 and a second sector gear 69 mesh on the toothed plate 64. Both sector gears are rotatably installed on the assembly plate 61, and a first gear 66 and a second gear 67 meshing with each other are fixedly installed on the rotating shaft, respectively.

[0041] A first transmission rod 11 is rotatably mounted on the support plate at the top of the processing table 1. A third gear 12 is provided on the first transmission rod 11 and is connected to the rotating shaft of one of the sector gears through a first belt transmission group 13. The third gear 12 matches the first tooth groove 401 opened on one side of the extension rod 4.

[0042] In this embodiment, when the telescopic cylinder 3 drives the extension rod 4 to descend, the first transmission rod 11 can be driven to rotate through the meshing transmission of the first tooth groove 401 and the third gear 12. When the first transmission rod 11 is connected to the rotating shaft of the first sector gear 68 through the first belt transmission group 13, the first sector gear 68 can be driven to rotate. The first gear 66 rotates synchronously and drives the second gear 67 to rotate through meshing transmission. The first sector gear 68 will mesh with the toothed plate 64, and with the sliding connection between the slider 63 and the slide rail 62, the toothed plate 64 will move in the water direction. When the teeth of the first sector gear 68 disengage from the toothed plate 64, the second sector gear 69 will follow the second gear 67 to rotate synchronously and mesh with the toothed plate 64. Similarly, the toothed plate 64 will be driven to move in the opposite direction in the water direction. By repeating the above steps, the toothed plate 64 can be made to reciprocate in the horizontal direction, and the pusher plate 7 will keep in sync with the connecting plate 65.

[0043] In the above embodiments, compared with the traditional crank-connecting rod reciprocating structure, the space occupied is smaller within the same reciprocating distance.

[0044] In the above embodiment, the third gear 12 is rotatably mounted on the first transmission rod 11, and the rotation shaft is a one-way shaft. That is, when the extension rod 4 descends, the third gear 12 and the one-way shaft lock together and rotate, thereby driving the first transmission rod 11 to rotate. When the extension rod 4 rises, the third gear 12 and the one-way shaft rotate relative to each other. When the third gear 12 rotates, the one-way shaft locks, and the first transmission rod 11 also locks. Therefore, the transmission with the reciprocating mechanism 6 is only realized when the extension rod 4 descends to fill the mold groove 101, avoiding material accumulation caused by multiple fillings.

[0045] It should also be noted that when the extension rod 4 lowers the pressure module 5 close to the mold groove 101, the teeth of the third gear 12 disengage from the first tooth groove 401, thereby avoiding the pusher plate 7 from affecting the die casting process.

[0046] The processing table 1 is provided with a support 18 on the top, and a movable rod 19 extending vertically is slidably installed on the support 18. The top of the movable rod 19 abuts against a guide plate 14. A vertical plate 15 is provided on the top of the guide plate 14. The vertical plate 15 is rotatably installed at the bottom of the material box 8, and a torsion spring is provided on the rotating shaft.

[0047] In this embodiment, when the movable rod 19 is driven to slide upward, it will push the guide plate 14. Through the rotational connection between the vertical plate 15 and the material box 8, the guide plate 14 will flip downward, and the powder material on its top will be poured into the processing table 1 to realize the unloading. The torsion spring on the rotating shaft of the vertical plate 15 is used to drive the guide plate 14 horizontally.

[0048] The connecting plate 65 is fixedly mounted with a horizontal plate 16 via a connecting rod 17. The top of the horizontal plate 16 is provided with a first groove 1601 and a second groove 1602 in sequence along the direction close to the mold groove 101. The second groove 1602 matches the trapezoidal block 20 provided at the bottom of the movable rod 19. The length of the first groove 1601 is greater than that of the second groove 1602, and a slope 1603 is provided near the inner wall of the second groove 1602. The slope 1603 matches the inclined side of the trapezoidal block 20.

[0049] In the above embodiment, the horizontal plate 16 is kept in sync with the connecting plate 65 in reciprocating motion in the horizontal direction by the connecting rod 17. In the initial state, the trapezoidal block 20 is engaged in the second groove 1602. When the horizontal plate 16 moves horizontally to the right, the trapezoidal block 20 can be pushed by the cooperation of the second groove 1602 and the trapezoidal block 20, so that the movable rod 19 rises and pushes the guide plate 14 to flip downward, thereby realizing the unloading. After the horizontal plate 16 continues to move horizontally to the right, the torsion spring drives the guide plate 14 to push the movable rod 19, so that the trapezoidal block 20 enters the first groove 1601, thereby causing the movable rod 19 to fall and the guide plate 14 to flip downward to restore its original position, thereby stopping the unloading. Similarly, when the horizontal plate 16 moves back, the above steps can be repeated in reverse by the cooperation of the ramp 1603 and the inclined side of the trapezoidal block 20, thereby realizing the transmission of the unloading and reciprocating mechanism 6, and further reducing the cost of use.

[0050] In the above embodiment, the length of the first groove 1601 is greater than that of the second groove 1602, which is used to ensure that the pusher plate 7 stops feeding when pushing the material and can also avoid pushing the material back when returning.

[0051] A stirring rod 22 is rotatably installed inside the material box 8. The stirring rod 22 extends to the top of the material box 8 and is fixedly installed with a worm gear 23. The worm gear 23 meshes with a worm 24 rotatably installed on the top of the material box 8. The worm 24 is connected to a second transmission rod 25 through a second belt drive group 26. The second transmission rod 25 is rotatably installed on the fixed frame 2 and a fourth gear 27 is fixedly installed at its end. The fourth gear 27 meshes with a second tooth groove 402 opened on the other side of the extension rod 4.

[0052] In this embodiment, when the extension rod 4 is raised and lowered, the second transmission rod 25 is driven to rotate synchronously through the meshing transmission of the second tooth groove 402 and the fourth gear 27, and the worm 24 is driven to rotate through the transmission of the second belt transmission group 26. The worm 24 then drives the worm wheel 23 to rotate through meshing. The stirring rod 22 rotates synchronously to stir the material in the material box 8, thereby avoiding the hollow phenomenon inside the material that would cause the material to be discharged incompletely, and also preventing the discharge port 802 from being blocked.

[0053] A movable block 28 is matched and arranged inside the mold groove 101. A spring 29 is provided at the bottom of the movable block 28, and the other end of the spring 29 is fixedly connected to the bottom of the mold groove 101.

[0054] In this embodiment, when the pressure module 5 performs die casting on the material in the mold groove 101, it will squeeze the spring 29 through the movable block 28. When the pressure module 5 quickly leaves the mold groove 101, the elastic force of the spring 29 will push the die-cast part out of the mold groove 101 so as to facilitate the collection of the part.

[0055] The processing table 1 has a through groove 102, which is located on the side of the mold groove 101 away from the push plate 7, and a collection box 21 with an open top is placed below it.

[0056] In this embodiment, the pusher plate 7 pushes excess material into the channel 102 and drops it into the collection box 21 for collection.

[0057] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

[0058] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art.

Claims

1. A powder metallurgy forming die for a part, characterized in that: It includes a processing table (1) and a fixed frame (2) set on its top. The fixed frame (2) is equipped with a telescopic cylinder (3). The telescopic end of the telescopic cylinder (3) is vertically downward and is fixedly installed with an extension rod (4). The bottom end of the extension rod (4) is provided with a pressure module (5). The pressure module (5) is coaxially matched with the mold groove (101) opened on the top of the processing table (1). A reciprocating mechanism (6) that moves in the horizontal direction is provided on one side of the mold groove (101). The reciprocating mechanism (6) is connected to the extension rod (4) in a transmission manner, and a pusher plate (7) is provided on the side close to the mold groove (101). A material box (8) is provided between the pusher plate (7) and the mold groove (101). The material box (8) has an inlet (801) at the top and an outlet (802) at the bottom, and is fixedly installed on the top of the processing table (1) by a support frame (9). The reciprocating mechanism (6) includes a fixedly installed assembly plate (61), on which a slide rail (62) extending in the horizontal direction is provided. A slider (63) is slidably installed in the slide rail (62), and a toothed plate (64) is fixedly installed on the slider (63). The end of the toothed plate (64) and the pusher plate (7) are fixedly connected by a connecting plate (65). A first sector gear (68) and a second sector gear (69) mesh on the toothed plate (64) and are respectively distributed in opposite directions. Both sector gears are rotatably installed on the assembly plate (61), and a first gear (66) and a second gear (67) meshing with each other are respectively fixedly installed on the rotating shaft. A first transmission rod (11) is rotatably mounted on the support plate at the top of the processing table (1). A third gear (12) is provided on the first transmission rod (11), and it is connected to the rotating shaft of one of the sector gears through the first belt transmission group (13). The third gear (12) matches the first tooth groove (401) opened on one side of the extension rod (4). The third gear (12) is rotatably mounted on the first transmission rod (11), and the rotation shaft is a one-way shaft; The processing table (1) is provided with a support (18) on top. A movable rod (19) extending vertically is slidably installed on the support (18). A guide plate (14) is abutted on the top of the movable rod (19). A vertical plate (15) is provided on the top of the guide plate (14). The vertical plate (15) is rotatably installed on the bottom of the material box (8), and a torsion spring is provided on the rotating shaft. The connecting plate (65) is fixedly mounted with a horizontal plate (16) via a connecting rod (17). The top of the horizontal plate (16) is provided with a first groove (1601) and a second groove (1602) in sequence along the direction close to the mold groove (101). The second groove (1602) matches the trapezoidal block (20) provided at the bottom of the movable rod (19). The length of the first groove (1601) is greater than that of the second groove (1602), and a slope (1603) is provided near the inner wall of the second groove (1602). The slope (1603) matches the inclined side of the trapezoidal block (20). A stirring rod (22) is rotatably installed inside the material box (8). The stirring rod (22) extends to the top of the material box (8) and is fixedly installed with a worm gear (23). The worm gear (23) meshes with a worm (24) rotatably installed on the top of the material box (8). The worm (24) is connected to a second transmission rod (25) through a second belt drive group (26). The second transmission rod (25) is rotatably installed on the fixed frame (2) and a fourth gear (27) is fixedly installed at its end. The fourth gear (27) meshes with a second tooth groove (402) opened on the other side of the extension rod (4).

2. The powder metallurgy forming mold for parts according to claim 1, characterized in that: Limiting plates (10) are provided on both sides of the pusher plate (7).

3. The powder metallurgy forming mold for parts according to claim 1, characterized in that: A movable block (28) is matched and arranged inside the mold groove (101). A spring (29) is provided at the bottom of the movable block (28). The other end of the spring (29) is fixedly connected to the bottom of the mold groove (101).

4. The powder metallurgy forming mold for parts according to claim 1, characterized in that: The processing table (1) has a through groove (102), which is located on the side of the mold groove (101) away from the push plate (7), and a collection box (21) with an open top is placed below it.

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