Part powder metallurgy forming die

Abstract

The part powder metallurgy forming die comprises a machining table and a fixing frame arranged at the top of the machining table, a telescopic air cylinder is assembled on the fixing frame, the telescopic end of the telescopic air cylinder is vertically downward and fixedly provided with an extension rod, a die pressing block is arranged at the bottom end of the extension rod, and the die pressing block is coaxially matched with a die groove formed in the top of the machining table; a reciprocating mechanism moving in the horizontal direction is arranged on one side of the mold groove and is in transmission connection with the extension rod, and a material pushing plate is arranged on the side, close to the mold groove, of the reciprocating mechanism; a material box is arranged between the material pushing plate and the mold groove, a feeding port is formed in the top of the material box, a discharging port is formed in the bottom of the material box, and the material box is fixedly installed on the top of the machining table through a supporting frame. According to the die-casting machine, the material pushing plate reciprocates in the horizontal direction, powder raw materials on the top of the machining table are pushed into the die groove, redundant powder raw materials are scraped away, and therefore it is guaranteed that the powder raw materials are evenly distributed in the die groove, and the quality of parts formed through die-casting is good.

Description

Technical Field

[0001] The invention mainly relates to the technical field of metal powder manufacturing, and in particular to a part powder metallurgy forming die. Background Art

[0002] Powder metallurgy uses metal powder as raw material and makes parts through pressing, forming, sintering and other processes. In this process, the main function of the powder metallurgy forming mold is to pressurize the metal powder according to the design requirements and ensure the size and shape accuracy of the parts. The use of powder metallurgy forming molds is very wide. It is suitable for manufacturing various parts and tools with complex shapes, high dimensional accuracy and special material requirements.

[0003] When a powder metallurgy forming mold is in use, the powder raw material needs to be added to the mold groove through a feeding mechanism. In the prior art, pump suction is usually used to achieve this. This feeding method can easily lead to uneven distribution of the powder raw material in the mold groove, thereby affecting the quality of subsequent die-cast parts. Summary of the invention

[0004] 1. Technical problems to be solved by the invention: The present invention provides a powder metallurgy forming die for parts, which is used to solve the technical problems existing in the above-mentioned background technology.

[0005] 2. Technical solution: To achieve the above object, the technical solution provided by the present invention is: a powder metallurgy forming die for a part, comprising a processing table and a fixing frame arranged on the top thereof, the fixing frame being equipped with a telescopic cylinder, the telescopic end of the telescopic cylinder being vertically downward and fixedly installed with an extension rod, the bottom end of the extension rod being provided with a pressing die block, the pressing die block being coaxially matched with a die groove opened on the top of the processing table; A reciprocating mechanism that moves in the horizontal direction is provided on one side of the mold groove, the reciprocating mechanism is transmission-connected with the extension rod, and a push plate is provided on one side close to the mold groove; A material box is arranged between the push plate and the mold groove. The top of the material box is provided with a feed inlet, the bottom of the material box is provided with a discharge outlet, and the material box is fixedly installed on the top of the processing table through a support frame.

[0006] Furthermore, limit plates are provided on both sides of the push plate.

[0007] 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, a tooth plate is fixedly installed on the slider, the end of the tooth plate and the push plate are fixedly connected by a connecting plate, a relatively distributed first sector gear and a second sector gear are meshed on the tooth plate, the two sector gears are rotatably installed on the assembly plate, and a first gear and a second gear meshing with each other are fixedly installed on the rotating shaft.

[0008] 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 is connected to the rotating shaft of one of the fan-shaped gears through a first belt transmission group, and the third gear matches the first tooth groove opened on one side of the extension rod.

[0009] Furthermore, the third gear is rotatably mounted on the first transmission rod, and the rotating shaft is a one-way shaft.

[0010] Furthermore, a bracket is provided on the top of the processing table, and a movable rod extending in the vertical direction is slidably installed on the bracket. The top of the movable rod is abutted against a material guide plate, and a vertical plate is provided on the top of the material guide plate. The vertical plate is rotatably installed on the bottom of the material box, and a torsion spring is provided on the rotating shaft.

[0011] Furthermore, the connecting plate is fixedly installed with a horizontal plate through a connecting rod, and a first groove and a second groove are sequentially opened on the top of the horizontal plate along the direction close to the mold groove, and 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 set on the inner wall close to the second groove, and the slope matches the hypotenuse of the trapezoidal block.

[0012] Furthermore, a stirring rod is rotatably installed in the material box, the stirring rod extends to the top of the material box and is fixedly installed with a worm wheel, the worm wheel is meshed 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 group, the second transmission rod is rotatably installed on the fixed frame, and a fourth gear is fixedly installed on the end, the fourth gear is meshed with a second tooth groove opened on the other side of the extension rod.

[0013] Furthermore, a movable block is matched and arranged in the mold groove, a spring is arranged at the bottom of the movable block, and the other end of the spring is fixedly connected to the bottom of the mold groove.

[0014] Furthermore, the processing table is provided with a through slot, which is located on a side of the mold slot away from the push plate, and a collection box with an open top is placed below.

[0015] 3. Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: the reciprocating mechanism can drive the push plate to reciprocate in the horizontal direction, push the powder raw material on the top of the processing table into the mold groove, and scrape off the excess powder raw material to make the powder raw material flush with the top of the processing table, thereby ensuring that the powder raw material is evenly distributed in the mold groove, and the quality of the die-cast parts is good; The reciprocating mechanism is connected to the lifting transmission of the extension rod, so that the processing can be realized by synchronous linkage while eliminating the need for an additional driving source, thereby achieving the purpose of reducing the use cost. The reciprocating mechanism is also connected to the unloading transmission of the material box, which can further reduce the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a schematic diagram of the reciprocating mechanism structure of the present invention; Figure 4 It is a schematic diagram of the transmission structure of the guide plate of the present invention; Figure 5 Schematic diagram of the internal structure of the material box of the present invention Figure 6 Schematic diagram of the transmission structure of the extension rod of the present invention Figure 7 Schematic diagram of the internal structure of the mold slot of the present invention Reference numerals: 1. Processing table; 101. Die slot; 102. Through slot; 2. Fixing frame; 3. Telescopic cylinder; 4. Extension rod; 401. First tooth slot; 402. Second tooth slot; 5. Pressing module; 6. Reciprocating mechanism; 61. Assembly plate; 62. Slide rail; 63. Sliding block; 64. Tooth plate; 65. Connecting plate; 66. First gear; 67. Second gear; 68. First sector gear; 69. Second sector gear; 7. Pushing plate; 8. Material box; 801. Feed inlet; 802. Discharge outlet; 9. Support frame; 10. Limiting plate; 11. first transmission rod; 12. third gear; 13. first belt transmission group; 14. guide plate; 15. vertical plate; 16. horizontal plate; 1601. first groove; 1602. second groove; 1603. ramp; 17. connecting rod; 18. bracket; 19. movable rod; 20. trapezoidal block; 21. collecting box; 22. stirring rod; 23. worm wheel; 24. worm; 25. second transmission rod; 26. second belt transmission group; 27. fourth gear; 28. movable block; 29. ​​spring. DETAILED DESCRIPTION

[0017] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. 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 internal communication between 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. Example

[0021] Refer to the attached Figure 1-7 A powder metallurgy forming die for a part comprises a processing table 1 and a fixing frame 2 arranged on the top thereof, a telescopic cylinder 3 is mounted on the fixing frame 2, the telescopic end of the telescopic cylinder 3 is vertically downward, and an extension rod 4 is fixedly installed, a pressing die block 5 is arranged at the bottom end of the extension rod 4, and the pressing die block 5 is coaxially matched with a die groove 101 opened on the top of the processing table 1; A reciprocating mechanism 6 that moves in the horizontal direction is disposed on one side of the mold groove 101, the reciprocating mechanism 6 is transmission-connected to the extension rod 4, and a push plate 7 is disposed on one side close to the mold groove 101; A material box 8 is provided between the push plate 7 and the mold groove 101 . The material box 8 has a feed inlet 801 at the top and a discharge outlet 802 at the bottom, and is fixedly mounted on the top of the processing table 1 via a support frame 9 .

[0022] In this embodiment, after the powder raw material is added into 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 push plate 7 to reciprocate in the horizontal direction, so that the powder raw material on the top of the processing table 1 can be pushed into the mold groove 101, and the excess powder raw material is scraped off to make the powder raw material 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 die-cast the powder raw material in the mold groove 101 into parts, and the reciprocating mechanism 6 is connected to the extension rod 4 in a transmission manner to achieve the purpose of reducing costs.

[0023] Limiting plates 10 are provided on both sides of the push plate 7 for limiting the powder raw material to prevent it from extending to the two sides of the push plate 7 .

[0024] The reciprocating mechanism 6 includes a fixedly mounted assembly plate 61, on which a slide rail 62 extending in the horizontal direction is provided, in which a slider 63 is slidably mounted, on which a tooth plate 64 is fixedly mounted, and an end of the tooth plate 64 is fixedly connected to the push plate 7 via a connecting plate 65, on which a first sector gear 68 and a second sector gear 69 are meshed with each other, and both sector gears are rotatably mounted on the assembly plate 61, and a first gear 66 and a second gear 67 meshing with each other are fixedly mounted on the rotating shaft; A first transmission rod 11 is rotatably mounted on the support plate on 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.

[0025] 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, and the first gear 66 rotates synchronously, and the second gear 67 can be driven to rotate through the meshing transmission. The first sector gear 68 will mesh with the tooth plate 64, and then cooperate with the sliding connection between the slider 63 and the slide rail 62, so that the tooth plate 64 extends in the water direction. When the gear teeth of the first sector gear 68 are disengaged from the tooth plate 64, the second sector gear 69 follows the second gear 67 to rotate synchronously to achieve meshing with the tooth plate 64. Similarly, the tooth plate 64 is driven to extend in the opposite direction of the water direction. Repeating the above steps can realize the reciprocating motion of the tooth plate 64 in the horizontal direction, and the push plate 7 follows the connecting plate 65 to maintain synchronous movement.

[0026] In the above embodiment, compared with the traditional crank-connecting rod reciprocating structure, the space occupied within the same reciprocating distance is smaller.

[0027] In the above embodiment, the third gear 12 is rotatably mounted on the first transmission rod 11, and the rotating shaft is a one-way shaft, that is, when the extension rod 4 descends, the third gear 12 and the one-way shaft are locked and rotate together, 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, the third gear 12 rotates, the one-way shaft is locked, and the first transmission rod 11 is also locked, so only when the extension rod 4 descends can the transmission with the reciprocating mechanism 6 be realized to fill the mold groove 101, thereby avoiding material accumulation caused by multiple fillings.

[0028] It should be noted that when the extension rod 4 lowers the pressure module 5 close to the die groove 101 , the gear teeth of the third gear 12 are disengaged from the first tooth groove 401 , thereby preventing the push plate 7 from affecting the die-casting process.

[0029] A bracket 18 is provided on the top of the processing table 1, and a movable rod 19 extending in the vertical direction is slidably installed on the bracket 18. The top of the movable rod 19 abuts against a material guide plate 14, and a vertical plate 15 is provided on the top of the material 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.

[0030] In this embodiment, when the movable rod 19 is driven to slide upward, it will push the material guide plate 14, and through the rotation connection between the vertical plate 15 and the material box 8, the material guide plate 14 will flip downward, and the powder material on the top will be poured onto the processing table 1 to realize material unloading. The torsion spring on the rotating shaft of the vertical plate 15 is used to drive the material guide plate 14 to be horizontal.

[0031] The connecting plate 65 is fixedly installed with a horizontal plate 16 through 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 set 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 set near the inner wall of the second groove 1602, and the slope 1603 matches the hypotenuse of the trapezoidal block 20.

[0032] In the above embodiment, the horizontal plate 16 maintains the reciprocating motion in the horizontal direction synchronously with the connecting plate 65 through the connecting rod 17. In the initial state, the trapezoidal block 20 is clamped in the second groove 1602. When the horizontal plate 16 moves horizontally to the right, the second groove 1602 cooperates with the trapezoidal block 20 to push the trapezoidal block 20, so that the movable rod 19 rises and pushes the guide plate 14 downward to flip over, thereby realizing 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, so that the movable rod 19 descends, and the guide plate 14 flips downward to recover, thereby stopping unloading. Similarly, when the horizontal plate 16 moves back, the above steps can be repeated in reverse through the cooperation of the slope 1603 and the hypotenuse of the trapezoidal block 20, thereby realizing unloading and the transmission of the reciprocating mechanism 6, further reducing the cost of use.

[0033] In the above embodiment, the length of the first groove 1601 is greater than that of the second groove 1602, so as to ensure that the push plate 7 stops unloading materials when pushing materials, and can also avoid pushing materials back when returning.

[0034] A stirring rod 22 is rotatably installed in the material box 8, and the stirring rod 22 extends to the top of the material box 8 and is fixedly installed with a worm wheel 23. The worm wheel 23 is meshed 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 transmission group 26. The second transmission rod 25 is rotatably installed on the fixed frame 2, and a fourth gear 27 is fixedly installed on the end thereof. The fourth gear 27 is meshed with a second tooth groove 402 opened on the other side of the extension rod 4.

[0035] In this embodiment, when the extension rod 4 is raised or lowered, the meshing transmission of the second tooth groove 402 and the fourth gear 27 drives the second transmission rod 25 to rotate synchronously, and the transmission of the second belt drive group 26 drives the worm 24 to rotate, and the worm 24 drives the worm wheel 23 to rotate through meshing, and the stirring rod 22 rotates synchronously to stir the material in the material box 8, thereby avoiding the hollow phenomenon inside the material that causes the material to be not discharged completely, and at the same time, it can also avoid blockage of the discharge port 802.

[0036] A movable block 28 is matched and arranged in the mold groove 101 . A spring 29 is arranged 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 .

[0037] In this embodiment, when the pressing module 5 die-casts the material in the mold groove 101, it will squeeze the spring 29 through the movable block 28. When the pressing module 5 quickly leaves the mold groove 101, the elastic force of the spring 29 will push the die-cast parts out of the mold groove 101 to facilitate the collection of the parts.

[0038] The processing table 1 is provided with a through slot 102 , which is located on a side of the mold slot 101 away from the push plate 7 , and a collecting box 21 with an open top is placed below.

[0039] In this embodiment, the push plate 7 pushes the excess material into the through groove 102, and the excess material falls into the collection box 21 for collection.

[0040] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

[0041] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art.

Claims

1. A powder metallurgy forming die for a part, characterized in that: It comprises a processing table (1), and a fixed frame (2) arranged on the top thereof, the fixed frame (2) being equipped with a telescopic cylinder (3), the telescopic end of the telescopic cylinder (3) being vertically downward and fixedly mounted with an extension rod (4), the bottom end of the extension rod (4) being provided with a pressing module (5), the pressing module (5) being coaxially matched with a mold groove (101) opened on the top of the processing table (1); A reciprocating mechanism (6) that moves in a horizontal direction is provided on one side of the mold groove (101), the reciprocating mechanism (6) is in transmission connection with the extension rod (4), and a push plate (7) is provided on a side close to the mold groove (101); A material box (8) is provided between the push plate (7) and the mold groove (101); the material box (8) has a material inlet (801) at the top and a material outlet (802) at the bottom, and is fixedly mounted on the top of the processing table (1) via a support frame (9); The reciprocating mechanism (6) comprises a fixedly mounted assembly plate (61), the assembly plate (61) is provided with a slide rail (62) extending in a horizontal direction, a slider (63) is slidably mounted in the slide rail (62), a tooth plate (64) is fixedly mounted on the slider (63), an end of the tooth plate (64) and the push plate (7) are fixedly connected via a connecting plate (65), a first sector gear (68) and a second sector gear (69) are meshed with each other and distributed relatively, the two sector gears are both rotatably mounted on the assembly plate (61), and a first gear (66) and a second gear (67) meshing with each other are respectively fixedly mounted on the rotating shaft; A first transmission rod (11) is rotatably mounted on a 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 a rotating shaft of one of the sector gears via a first belt transmission group (13); the third gear (12) matches a first tooth groove (401) provided on one side of the extension rod (4); The third gear (12) is rotatably mounted on the first transmission rod (11), and the rotation axis is a one-way axis.

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

3. A powder metallurgy forming die for parts according to claim 1, characterized in that: A bracket (18) is arranged on the top of the processing table (1), a movable rod (19) extending in the vertical direction is slidably mounted on the bracket (18), a material guide plate (14) is abutted on the top of the movable rod (19), a vertical plate (15) is arranged on the top of the material guide plate (14), the vertical plate (15) is rotatably mounted on the bottom of the material box (8), and a torsion spring is arranged on the rotating shaft.

4. A powder metallurgy forming die for parts according to claim 3, characterized in that: The connecting plate (65) is fixedly mounted with a horizontal plate (16) via a connecting rod (17); a first groove (1601) and a second groove (1602) are sequentially provided on the top of the horizontal plate (16) in a 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); a slope (1603) is provided on the inner wall close to the second groove (1602); the slope (1603) matches the hypotenuse of the trapezoidal block (20).

5. The powder metallurgy forming die for parts according to claim 1, characterized in that: A stirring rod (22) is rotatably mounted in the material box (8), the stirring rod (22) extending to the top of the material box (8) and fixedly mounted with a worm wheel (23), the worm wheel (23) meshing with a worm (24) rotatably mounted on the top of the material box (8), the worm (24) being connected to a second transmission rod (25) via a second belt transmission group (26), the second transmission rod (25) being rotatably mounted on the fixed frame (2), and a fourth gear (27) being fixedly mounted on the end thereof, the fourth gear (27) meshing with a second tooth groove (402) provided on the other side of the extension rod (4).

6. A powder metallurgy forming die for parts according to claim 1, characterized in that: A movable block (28) is matched and arranged in the mold groove (101), a spring (29) is arranged 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).

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

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