Powder metallurgy gear forming device

Abstract

The utility model discloses a powder metallurgy gear forming device, relates to the technical field of gear machining equipment, and aims to solve the problems that when an existing powder metallurgy gear forming device is used, raw material powder left on the surface of a forming plate can enlarge a gap between a material box and a push plate and the forming plate, so that too much materials are fed to a mold core, and the machining efficiency is high. According to the technical scheme, the stamping forming device comprises a stamping mechanism, a feeding mechanism, a forming assembly, an ash removal assembly, a screening assembly and a discharging plate. By arranging the screening assembly and utilizing the gravity of a workpiece, the workpiece compresses a spring when sliding onto a screen plate, so that the screen plate can shake to a certain extent, raw material powder attached to the workpiece can shake and fall into a recovery box, and the practicability is high; and by arranging the ash removal assembly, the upper surface of the forming plate can be further cleaned, and the machining precision of the workpiece is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gear processing equipment, in particular to a powder metallurgy gear forming device. Background Technique

[0002] Powder metallurgy is a process for manufacturing metal parts, which involves using metal or alloy powders as raw materials. This technology can be used to produce parts of various shapes and sizes, including gears, bearings, filters, and other precision components. In the powder metallurgy process, first, the metal powders are mixed together and pressed into the desired shape. Then, these pressed parts are heated to a high temperature to solidify them and form a strong structure. Finally, these parts can be finish-machined by grinding or other surface treatment methods to meet the required quality standards.

[0003] After retrieval, a Chinese patent with the authorization announcement number CN115770876B discloses a powder metallurgy gear forming device, including a base. A die cylinder is arranged on the surface of the base, and the die cylinder is vertically through. The inner wall of the die cylinder has a spiral tooth surface adapted to the spiral gear. An upper extrusion body and a lower extrusion body are distributed above and below the die cylinder. The edges of the upper extrusion body and the lower extrusion body are both spiral tooth surfaces adapted to the inner wall of the die cylinder. A shaft body is arranged on the upper surface of the lower extrusion body, and a hole adapted to the shaft body is arranged on the surface of the upper extrusion body. The lower extrusion body is connected with a lower hydraulic component for driving its spiral lifting. In the present invention, the upper diameter rod limits and guides the upper spiral groove, and the lower diameter rod limits and guides the lower spiral groove, so that the upper extrusion body and the lower extrusion body rotate and approach each other, extrude the metal powder in the die cylinder to form a spiral gear, and rotate and push the spiral gear out of the die cylinder, realizing the one-time extrusion forming of the spiral gear, with the advantages of high efficiency and high precision.

[0004] However, the above technology still has deficiencies. When the existing powder metallurgy gear forming device is in use, usually when loading materials, the just-formed workpiece is pushed away from above the die core synchronously. In this process, there will be excess raw material powder left on the surface of the forming plate. These raw material powders will increase the gap between the material box and the push plate and the forming plate, resulting in excessive loading of the die core and affecting the processing quality of the product. For this reason, we propose a powder metallurgy gear forming device to solve this problem. Summary of the Utility Model

[0005] The utility model is a powder metallurgy gear forming device proposed to solve the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A powder metallurgy gear forming device, comprising:

[0008] A stamping mechanism, a feeding mechanism, a forming component, a dust cleaning component, a screening component and a blanking plate. The stamping mechanism includes a base. At the four corners of the top of the base, guide columns are fixedly arranged. At the top ends of the guide columns, hydraulic cylinders are fixedly arranged. The hydraulic cylinders are communicated with hydraulic pipes. A middle plate is slidably arranged on the guide columns. The forming component includes a forming plate. A die core is arranged on the forming plate. A lower punch is arranged on the base. An upper punch is arranged at the bottom end of the hydraulic pipe. Both the upper punch and the lower punch are adapted to the die core. The feeding mechanism includes a material box. The material box is slidably arranged on the forming plate. The dust cleaning component includes two baffles symmetrically arranged at the top of the forming plate, a U-shaped push plate, a rotating shaft and a dust cleaning scraper. The U-shaped push plate is fixedly arranged at the front end of the material box. The rotating shaft is rotatably connected with the U-shaped push plate. The dust cleaning scraper is fixedly sleeved on the rotating shaft. A chute is arranged on the inner side of the baffle. A rack is fixedly arranged on the top inner wall of the chute. Gears are fixedly sleeved at both ends of the rotating shaft. The gears are meshed with the rack.

[0009] Preferably, a first hydraulic cylinder is fixedly arranged on the top of the base. The output shaft of the first hydraulic cylinder is fixedly connected with the middle plate.

[0010] Preferably, a second hydraulic cylinder is fixedly arranged on the top of the middle plate. The output shaft of the second hydraulic cylinder is fixedly connected with the material box. A feed pipe is communicated with the material box. The feed pipe is externally connected with a feeding device.

[0011] Preferably, a limiting groove is arranged on the inner wall of the chute. One-way bearings are fixedly sleeved at both ends of the rotating shaft. Sliders are fixedly sleeved on the outer sides of the one-way bearings. The sliders are slidably arranged in the limiting grooves.

[0012] Preferably, the screening component includes a recycling box. The recycling box is fixedly arranged at the front side of the forming plate. A vertical rod is fixedly arranged on the bottom inner wall of the recycling box. A spring is slidably sleeved on the vertical rod. A sieve plate is movably arranged on the vertical rod.

[0013] Preferably, the front end of the sieve plate is inclined. The bottom of the front end of the sieve plate is adapted to the blanking plate.

[0014] By setting the screening component in the utility model, by using the self-gravity of the workpiece, when the workpiece slides onto the sieve plate, the spring is compressed, so that the sieve plate can generate a certain vibration, and then the raw material powder attached to the workpiece can be shaken off into the recycling box, which has high practicability; by setting the dust cleaning component, the upper surface of the forming plate can be further cleaned, ensuring the processing accuracy of the workpiece. Description of the Drawings

[0015] Figure 1Schematic three-dimensional structure diagram of a powder metallurgy gear forming device proposed by the present utility model;

[0016] Figure 2 Schematic front view structure diagram of a powder metallurgy gear forming device proposed by the present utility model;

[0017] Figure 3 Schematic structure diagram of the feeding mechanism part of a powder metallurgy gear forming device proposed by the present utility model;

[0018] Figure 4 Schematic structure diagram of the forming mechanism part of a powder metallurgy gear forming device proposed by the present utility model;

[0019] Figure 5 Schematic structure diagram of the dust cleaning part of a powder metallurgy gear forming device proposed by the present utility model;

[0020] Figure 6 Schematic structure diagram of the screening part of a powder metallurgy gear forming device proposed by the present utility model;

[0021] Figure 7 Schematic structure diagram of part A of a powder metallurgy gear forming device proposed by the present utility model;

[0022] Figure 8 Schematic structure diagram of part B of a powder metallurgy gear forming device proposed by the present utility model.

[0023] In the figure: 1, stamping mechanism; 2, feeding mechanism; 3, forming assembly; 4, dust cleaning assembly; 5, screening assembly; 6, blanking plate; 101, base; 102, guide post; 103, hydraulic cylinder; 104, first hydraulic cylinder; 105, intermediate plate; 106, hydraulic pipe; 201, second hydraulic cylinder; 202, material box; 203, feed pipe; 301, forming plate; 302, die core; 303, upper punch; 304, lower punch; 401, baffle; 402, chute; 403, limit groove; 404, rack; 405, U-shaped push plate; 406, rotating shaft; 407, dust cleaning scraper; 408, gear; 409, one-way bearing; 4010, slider; 501, recovery box; 502, vertical rod; 503, spring; 504, sieve plate. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] Refer to Figure 1-8, an embodiment provided by this solution: a powder metallurgy gear forming device, comprising:

[0026] A stamping mechanism 1, a feeding mechanism 2, a forming assembly 3, a dust cleaning assembly 4, a screening assembly 5 and a blanking plate 6. The stamping mechanism 1 includes a base 101. At the four corners of the top of the base 101, guiding columns 102 are fixedly arranged. At the top ends of the guiding columns 102, hydraulic cylinders 103 are fixedly arranged. The hydraulic cylinders 103 are communicated with hydraulic pipes 106. A middle plate 105 is slidably arranged on the guiding columns 102. The forming assembly 3 includes a forming plate 301. On the forming plate 301, a die core 302 is arranged. On the base 101, a lower punch 304 is arranged. At the bottom end of the hydraulic pipe 106, an upper punch 303 is arranged. Both the upper punch 303 and the lower punch 304 are adapted to the die core 302. The feeding mechanism 2 includes a material box 202. The material box 202 is slidably arranged on the forming plate 301. The dust cleaning assembly 4 includes two baffles 401 symmetrically arranged on the top of the forming plate 301, a U-shaped push plate 405, a rotating shaft 406 and a dust cleaning scraper 407. The U-shaped push plate 405 is fixedly arranged at the front end of the material box 202. The rotating shaft 406 is rotatably connected with the U-shaped push plate 405. The dust cleaning scraper 407 is fixedly sleeved on the rotating shaft 406. Inside the baffle 401, a chute 402 is formed. On the top inner wall of the chute 402, a rack 404 is fixedly arranged. At both ends of the rotating shaft 406, gears 408 are fixedly sleeved. The gears 408 are meshed with the rack 404.

[0027] As Figure 1 and Figure 2 shown, in the present utility model, a first hydraulic cylinder 104 is fixedly arranged on the top of the base 101. The output shaft of the first hydraulic cylinder 104 is fixedly connected with the middle plate 105.

[0028] It should be noted that it is convenient for workpiece blanking.

[0029] As Figure 2 and Figure 3 shown, in the present utility model, a second hydraulic cylinder 201 is fixedly arranged on the top of the middle plate 105. The output shaft of the second hydraulic cylinder 201 is fixedly connected with the material box 202. The material box 202 is communicated with a feed pipe 203. The feed pipe 203 is externally connected with a feeding device.

[0030] It should be noted that the externally connected feeding device can automatically replenish the material box 202.

[0031] As Figure 1 , Figure 5 and Figure 7As shown, in the present utility model, a limiting groove 403 is formed in the inner wall of the sliding groove 402. Both ends of the rotating shaft 406 are fixedly sleeved with one-way bearings 409. The outer sides of the one-way bearings 409 are fixedly sleeved with sliders 4010. The sliders 4010 are slidably arranged in the limiting groove 403.

[0032] It should be noted that due to the arrangement of the one-way bearings 409, the dust cleaning scraper 407 will not rotate in the reverse direction. Moreover, when the dust cleaning scraper 407 retracts, due to the preset angle, the blade will not contact the upper surface of the forming plate 301, thereby avoiding bringing back the raw material powder.

[0033] As Figure 6 and Figure 8 As shown, in the present utility model, the screening assembly 5 includes a recycling box 501. The recycling box 501 is fixedly arranged on the front side of the forming plate 301. A vertical rod 502 is fixedly arranged on the bottom inner wall of the recycling box 501. A spring 503 is slidably sleeved on the vertical rod 502. A sieve plate 504 is movably arranged on the vertical rod 502.

[0034] It should be noted that when the workpiece slides onto the sieve plate 504, the self-weight of the workpiece will compress the spring 503, so that the sieve plate 504 can generate a certain vibration, and then the raw material powder attached to the workpiece can be vibrated off and fall into the recycling box 501.

[0035] As Figure 1 and Figure 6 As shown, in the present utility model, the front end of the sieve plate 504 is inclined, and the bottom of the front end of the sieve plate 504 is adapted to the blanking plate 6.

[0036] It should be noted that due to gravity and the thrust applied by the U-shaped push plate 405, the workpiece will slide down along the inclined surface of the sieve plate 504 onto the blanking plate 6 to complete blanking.

[0037] Working principle:

[0038] In use, in the initial state, the top end of the lower punch 304 is located inside the die core 302. First, the raw material powder is input into the material box 202 through an external feeding device. Then, the second hydraulic cylinder 201 is started, which can drive the material box 202 to move forward until the material box 202 moves above the die core 302. At this time, the raw material powder in the material box 202 will enter the die core 302. Then, the material box 202 resets, which can scrape the upper surface of the raw material powder in the die core 302 flat. At this time, the hydraulic cylinder 103 can be started to drive the upper punch 303 to move downward, so as to press and form the raw material powder in the die core 302. After forming, the upper punch 303 resets. Then, the first hydraulic cylinder 104 is started to drive the intermediate plate 105 and the forming plate 301 to move downward, so as to push the compression-molded gear 408 workpiece above the forming plate 301. When feeding, the U-shaped push plate 405 will move forward synchronously, so as to push the previously processed workpiece forward. When the workpiece slides onto the sieve plate 504, the self-weight of the workpiece will compress the spring 503, so as to make the sieve plate 504 vibrate to a certain extent, and then the raw material powder attached to the workpiece can be shaken off into the recycling box 501. Then the workpiece slides onto the blanking plate 6 to complete blanking. Similarly, when the U-shaped push plate 405 moves forward, the excess raw material powder on the upper surface of the forming plate 301 will be pushed into the recycling box 501. At this time, the gear 408 meshing with the rack 404 will drive the rotating shaft 406 to rotate, so as to drive the dust cleaning scraper 407 to rotate continuously, and scrape the excess raw material powder that may be retained on the upper surface of the forming plate 301 into the recycling box 501 for collection. When the U-shaped push plate 405 resets and retracts, due to the setting of the one-way bearing 409, the dust cleaning scraper 407 will not rotate in the reverse direction. And when the dust cleaning scraper 407 retracts, due to the preset angle, the blade will not contact the upper surface of the forming plate 301, thus avoiding bringing back the raw material powder.

[0039] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A powder metallurgy gear forming device, characterized in that: include: A stamping mechanism (1), a feeding mechanism (2), a molding assembly (3), a dust cleaning assembly (4), a screening assembly (5) and a blanking plate (6), wherein the stamping mechanism (1) comprises a base (101), guide columns (102) are fixedly arranged at the four corners of the top of the base (101), a hydraulic cylinder (103) is fixedly arranged at the top of the guide column (102), the hydraulic cylinder (103) is connected to a hydraulic pipe (106), an intermediate plate (105) is slidably arranged on the guide column (102), the molding assembly (3) comprises a molding plate (301), a mold core (302) is arranged on the molding plate (301), a lower punch (304) is arranged on the base (101), an upper punch (303) is arranged at the bottom end of the hydraulic pipe (106), and the upper punch (303) and the lower punch (304) are both adapted to the mold core (302). The feeding mechanism (2) comprises a material box (202), the material box (202) being slidably arranged on the forming plate (301), the cleaning component (4) comprising two baffles (401) symmetrically arranged on the top of the forming plate (301), a U-shaped push plate (405), a rotating shaft (406) and a cleaning scraper (407), the U-shaped push plate (405) being fixedly arranged at the front end of the material box (202), the rotating shaft (406) being rotatably connected to the U-shaped push plate (405), the cleaning scraper (407) being fixedly sleeved on the rotating shaft (406), a sliding groove (402) being provided on the inner side of the baffle (401), a rack (404) being fixedly arranged on the top inner wall of the sliding groove (402), and gears (408) being fixedly sleeved on both ends of the rotating shaft (406), and the gears (408) being meshed with the racks (404).

2. A powder metallurgy gear forming device according to claim 1, characterized in that: A first hydraulic cylinder (104) is fixedly arranged on the top of the base (101), and an output shaft of the first hydraulic cylinder (104) is fixedly connected to the middle plate (105).

3. The powder metallurgy gear forming device according to claim 1, characterized in that: A second hydraulic cylinder (201) is fixedly arranged on the top of the intermediate plate (105), and an output shaft of the second hydraulic cylinder (201) is fixedly connected to the material box (202). A feed pipe (203) is connected to the material box (202), and a feed device is externally connected to the feed pipe (203).

4. The powder metallurgy gear forming device according to claim 1, characterized in that: The inner wall of the slide groove (402) is provided with a limiting groove (403), the fixed sleeves at both ends of the rotating shaft (406) are provided with one-way bearings (409), the outer fixed sleeve of the one-way bearing (409) is provided with a sliding block (4010), and the sliding block (4010) is slidably arranged in the limiting groove (403).

5. The powder metallurgy gear forming device according to claim 1, characterized in that: The screening component (5) comprises a recovery box (501), wherein the recovery box (501) is fixedly arranged on the front side of the forming plate (301), a vertical rod (502) is fixedly arranged on the inner wall of the bottom of the recovery box (501), a spring (503) is slidably sleeved on the vertical rod (502), and a screening plate (504) is movably arranged on the vertical rod (502).

6. A powder metallurgy gear forming device according to claim 5, characterized in that: The front end of the sieve plate (504) is arranged to be inclined, and the front end bottom of the sieve plate (504) is adapted to the blanking plate (6).

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