Automobile transmission gear manufacturing device sintered based on powder metallurgy technology

Abstract

The invention belongs to the technical field of powder metallurgy, and particularly relates to an automobile transmission gear manufacturing device based on powder metallurgy technology sintering, the automobile transmission gear manufacturing device comprises a sintering box, one side of the sintering box is provided with a movable door, the inner bottom surface of the sintering box is provided with a circular groove, and when a formed gear is sintered, a motor A is started to drive one rotating shaft to rotate; when one rotating shaft rotates, a first bevel gear can be driven to rotate, when the first bevel gear rotates, the multiple rotating shafts can be driven to rotate at the same time, when the multiple rotating shafts rotate, multiple fan blades can be driven to rotate through multiple second bevel gears and multiple first bevel gears, and the fluidity of the gas environment in the sintering box can be accelerated through the multiple fan blades; therefore, the uniformity of the surrounding gas environment of the motor A can be improved, the uniformity of the surrounding temperature of the formed gear is further improved, the sintering efficiency of the formed gear can be effectively improved, and the quality of the formed gear can be effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of powder metallurgy, and particularly relates to a manufacturing device for automotive transmission gears sintered based on powder metallurgy technology. Background Technique

[0002] Powder metallurgy sintering of automotive gears is an advanced manufacturing technology used to produce high-performance automotive gears. In the past few decades, the automotive manufacturing industry has been pursuing more efficient and reliable automotive transmission systems. Traditional gear manufacturing processes have some limitations and are increasingly difficult to meet the growing market demands.

[0003] Powder metallurgy sintering technology has brought a revolutionary change to automotive gear manufacturing. Its basic principle is to sinter metal powders into solid materials under high temperature and high pressure conditions. Compared with traditional processing methods, powder metallurgy sintering technology has the following advantages: 1. High material utilization rate: Powder metallurgy sintering technology can increase the utilization rate of raw materials to more than 95%, saving a large amount of material resources compared with traditional processing methods; 2. Excellent product performance: Gears manufactured by powder metallurgy sintering process have superior mechanical properties and wear resistance. They have high density, high hardness, and high strength, and can meet the requirements of high-speed operation and complex working conditions of automobiles; 3. High precision and high processing efficiency: Powder metallurgy sintering technology can realize the manufacturing of gears with complex shapes and can complete the manufacturing of multiple gears at one time, improving production efficiency; 4. Product lightweight can be achieved: Compared with traditional casting and machining methods, powder metallurgy sintering technology can realize the lightweight design of gears, reduce the overall weight of the automobile, and improve fuel efficiency and driving performance.

[0004] Sintering can adopt sintering methods such as sealed sintering (static atmosphere sintering) or non-sealed sintering (open atmosphere sintering). Before sintering the gears, multiple preheated gears are usually placed on a sintering tray and then sent into the sintering chamber for sintering. In the case of sealed sintering, the surface of the gears is usually heated by a static method, and since the gears are stationary on the sintering tray, this sintering method will cause uneven heating of the gear surface and affect the flow between metal powder particles, resulting in local structural differences inside the gears, which will in turn affect the overall mechanical properties of the gears. In view of this, we propose a manufacturing device for automotive transmission gears sintered based on powder metallurgy technology. Summary of the Invention

[0005] The purpose of the present invention is to provide a manufacturing device for automotive transmission gears sintered based on powder metallurgy technology to solve the problems raised in the above background technique in view of the above existing technical problems.

[0006] In view of this, the present invention provides a manufacturing device for automotive transmission gears sintered based on powder metallurgy technology, including: Sintering box, one side of the sintering box is provided with a movable door, a circular groove is opened on the inner bottom surface of the sintering box, and a fixed platform is fixedly installed on the inner bottom surface of the circular groove; Casing, the casing is fixedly installed on the top surface of the fixed platform, a plurality of gear placement rings are arranged on the top surface of the fixed platform, a plurality of the gear placement rings are movably sleeved with the casing, and forming gears are arranged on a plurality of the gear placement rings, and a plurality of the forming gears are movably sleeved with the casing; Lifting plate, the lifting plate is slidably installed on the inner side wall of the sintering box, a sintering heater is fixedly installed on the bottom surface of the lifting plate, a plurality of heat outlet pipes are fixedly installed on the bottom surface of the sintering heater, and one of the heat outlet pipes is sleeved and matched with the casing; Lifting assembly, the lifting assembly is arranged in the sintering box and is used to drive the lifting plate to lift; A plurality of mounting plates, the plurality of mounting plates are fixedly installed on the inner bottom surface of the circular groove, and a plurality of fan blades are rotatably installed on one side of the plurality of mounting plates; Driving assembly, the driving assembly is arranged in the movable door and is used to drive a plurality of fan blades to rotate.

[0007] In the above technical solution, further, the lifting assembly includes two sliding seats, the two sliding seats are slidably installed on the inner top surface of the sintering box, connecting rods are rotatably installed on the two sliding seats, two lower seats are fixedly installed on the top surface of the lifting plate, and the bottom ends of the two connecting rods are respectively rotatably installed on the two lower seats. When the distance between the two sliding seats is adjusted, the lifting plate will be driven to lift through the cooperation of the connecting rods and the lower seats, and the height of the sintering heater is adjusted.

[0008] In the above technical solution, further, the lifting assembly further includes an upper cavity, the upper cavity is arranged in the sintering box, two sliding grooves are opened on the inner top surface of the sintering box, the two sliding grooves are communicated with the upper cavity, two racks are slidably installed on the inner bottom surface of the upper cavity, a second gear is rotatably installed on the inner bottom surface of the upper cavity, the two racks are located on both sides of the second gear, the two racks are meshed with the second gear, sliders are slidably installed in the two sliding grooves, the top ends of the two sliders are respectively fixedly connected to the bottom surfaces of the two racks, the bottom ends of the two racks are respectively fixedly connected to the top surfaces of the two sliding seats, and a motor B is fixedly installed on the top surface of the sintering box. The bottom end of the output shaft of the motor B is fixedly connected to the top end of the second gear. Starting the motor B drives the second gear to rotate. When the second gear rotates, it will drive the two racks to move. When the two racks move, the distance between the two sliding seats will be adjusted through the two sliders.

[0009] In the above technical solution, further, the driving component includes a toothed ring rotatably installed on the inner side wall of the circular groove. A plurality of rotating shafts are rotatably installed on the inner bottom surface of the circular groove. First gears are fixedly installed on the outer side walls of the plurality of rotating shafts. The plurality of first gears are engaged with the toothed ring. Second bevel gears are fixedly installed at the tops of the plurality of rotating shafts. First bevel gears are rotatably installed on one side of the plurality of mounting plates. One ends of the plurality of first bevel gears are respectively fixedly connected to one ends of the plurality of fan blades. The plurality of first bevel gears are respectively engaged with the plurality of second bevel gears. When one of the rotating shafts rotates, it will drive the first bevel gear to rotate. When the first bevel gear rotates, it will drive the plurality of rotating shafts to rotate simultaneously. When the plurality of rotating shafts rotate, the plurality of fan blades will be driven by the plurality of second bevel gears and the plurality of first bevel gears. The plurality of fan blades will accelerate the fluidity of the gas environment in the sintering box, thereby improving the uniformity of the gas environment around the motor A, further improving the uniformity of the temperature around the formed gear, effectively improving the sintering efficiency of the formed gear, and thus effectively improving the quality of the formed gear.

[0010] In the above technical solution, further, a lower cavity is provided in the sintering box. A motor A is fixedly installed on the inner top surface of the lower cavity. The top end of the output shaft of the motor A is fixedly connected to the bottom end of one of the rotating shafts. Starting the motor A drives one of the rotating shafts to rotate.

[0011] In the above technical solution, further, positioning holes are formed on the top surfaces of the plurality of gear placement rings. A plurality of support columns are fixedly installed on the bottom surfaces of the plurality of gear placement rings. The plurality of support columns are respectively movably sleeved in the plurality of positioning holes. By providing the plurality of support columns and the plurality of positioning holes, it is convenient for the plurality of gear placement rings to be stacked together.

[0012] In the above technical solution, further, a plurality of heat delivery holes are formed on the outer side wall of the sleeve. The plurality of heat delivery holes are evenly distributed at equal intervals on the outer side wall of the sleeve. By providing the heat delivery holes, the plurality of heat delivery holes will evenly deliver high-temperature gas to the plurality of formed gears, making the formed gears receive heat evenly.

[0013] In the above technical solution, further, a plurality of through holes are formed on the outer side walls of the plurality of gear placement rings. The plurality of through holes are evenly distributed at equal intervals on the outer side walls of the gear placement rings. By providing the plurality of through holes, the plurality of through holes will also evenly disperse the high-temperature gas to the plurality of formed gears, making the formed gears receive heat more evenly.

[0014] The beneficial effects of the present invention are: The manufacturing device for automotive transmission gears sintered based on powder metallurgy technology places the formed gears on multiple gear placement rings when sintering the formed gears. Then, the gear placement rings and the formed gears are sleeved on the formed gears, and multiple gear placement rings are stacked and installed. After the gear placement rings and the formed gears are installed on the sleeve, the lifting component is started to drive the lifting plate to descend. When the lifting plate descends, the sintering heater is brought closer to the lower formed gear. After the heat outlet pipe is sleeved inside the sleeve, the sintering heater is started, and the sintering heater generates hot air to sinter the formed gear. During the sintering process, by setting heat delivery holes, multiple heat delivery holes will evenly deliver high-temperature gas to multiple formed gears, making the formed gears evenly heated. By setting multiple through holes, multiple through holes will also evenly disperse the high-temperature gas to multiple formed gears, making the formed gears even more evenly heated. The manufacturing device for automotive transmission gears sintered based on powder metallurgy technology starts the motor A to drive one of the rotating shafts to rotate when sintering the formed gear. When one of the rotating shafts rotates, it will drive the first bevel gear to rotate. When the first bevel gear rotates, it will drive multiple rotating shafts to rotate simultaneously. When multiple rotating shafts rotate simultaneously, multiple fan blades will be driven by multiple second bevel gears and multiple first bevel gears to rotate. Multiple fan blades will accelerate the fluidity of the gas environment inside the sintering box, thereby achieving the improvement of the uniformity of the gas environment around the motor A and further improving the uniformity of the temperature around the formed gear, effectively improving the sintering efficiency of the formed gear, and thus effectively improving the quality of the formed gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a structural schematic diagram of the lifting plate of the present invention; Figure 3 is a sectional structural schematic diagram of the sintering box of the present invention; Figure 4 is a structural schematic diagram of the lower cavity of the present invention; Figure 5 is a sectional structural schematic diagram of the chute of the present invention; Figure 6 is a structural schematic diagram of the gear placement ring of the present invention; Figure 7 is a partial enlarged structural schematic diagram of the present invention; Figure 8 is a structural schematic diagram of the sleeve of the present invention.

[0016] The markings in the figures are indicated as: 1. Sintering box; 2. Movable door; 3. Circular groove; 4. Tooth ring; 5. Mounting plate; 6. First bevel gear; 7. Fan blade; 8. Rotating shaft; 9. First gear; 10. Second bevel gear; 11. Fixed table; 12. Gear placement ring; 13. Support column; 14. Motor A; 15. Lower cavity; 16. Through hole; 17. Lifting plate; 18. Sleeve; 19. Slide base; 20. Connecting rod; 21. Chute; 22. Slide block; 23. Upper cavity; 24. Rack; 25. Second gear; 26. Motor B; 27. Sintering heater; 28. Heat outlet pipe; 29. Heat supply hole; 30. Forming gear; 31. Positioning hole; 32. Lower seat. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0018] In the description of the present application, it should be noted that the terms used here are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0019] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of the same type and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0020] It should be noted that in the description of this application, the orientation or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing this application and simplifying the description. Without contrary explanations, these directional terms do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of this application; the directional terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0021] It should be noted that in this application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitations, the element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0022] Embodiment 1: Please refer to Figures 1-8 As shown, this embodiment provides a manufacturing device for automotive transmission gears sintered based on powder metallurgy technology.

[0023] Including: a sintering box 1, with a movable door 2 provided on one side of the sintering box 1. A circular groove 3 is formed on the inner bottom surface of the sintering box 1, and a fixed platform 11 is fixedly installed on the inner bottom surface of the circular groove 3; a sleeve 18, the sleeve 18 is fixedly installed on the top surface of the fixed platform 11. A plurality of gear placement rings 12 are arranged on the top surface of the fixed platform 11, and the plurality of gear placement rings 12 are movably sleeved with the sleeve 18. A plurality of formed gears 30 are provided on the plurality of gear placement rings 12, and the plurality of formed gears 30 are movably sleeved with the sleeve 18; a lifting plate 17, the lifting plate 17 is slidably installed on the inner side wall of the sintering box 1. A sintering heater 27 is fixedly installed on the bottom surface of the lifting plate 17, and a plurality of heat outlet pipes 28 are fixedly installed on the bottom surface of the sintering heater 27. One of the heat outlet pipes 28 is sleeved and matched with the sleeve 18; a lifting assembly, the lifting assembly is arranged in the sintering box 1 and is used to drive the lifting plate 17 to lift and lower; a plurality of mounting plates 5, the plurality of mounting plates 5 are fixedly installed on the inner bottom surface of the circular groove 3, and a plurality of fan blades 7 are rotatably installed on one side of each of the plurality of mounting plates 5; a driving assembly, the driving assembly is arranged in the movable door 2 and is used to drive the plurality of fan blades 7 to rotate. When sintering the formed gears 30, place the formed gears 30 on the plurality of gear placement rings 12, then sleeve the gear placement rings 12 and the formed gears 30 on the sleeve 18 to stack and install the plurality of gear placement rings 12. After the gear placement rings 12 and the formed gears 30 are installed on the sleeve 18, start the lifting assembly to drive the lifting plate 17 to descend. When the lifting plate 17 descends, the sintering heater 27 approaches the formed gear 30 below. After the heat outlet pipe 28 is sleeved in the sleeve 18, start the sintering heater 27. The sintering heater 27 generates hot air to sinter the formed gears 30. During the sintering process, by providing heat delivery holes 29, the plurality of heat delivery holes 29 will evenly deliver the high-temperature gas to the plurality of formed gears 30, making the formed gears 30 evenly heated. By providing a plurality of through holes 16, the plurality of through holes 16 will also evenly disperse the high-temperature gas to the plurality of formed gears 30, making the formed gears 30 more evenly heated.

[0024] Among them, the lifting assembly includes two sliding seats 19, the two sliding seats 19 are slidably installed on the inner top surface of the sintering box 1. Connecting rods 20 are rotatably installed on both of the two sliding seats 19. Two lower seats 32 are fixedly installed on the top surface of the lifting plate 17, and the bottom ends of the two connecting rods 20 are respectively rotatably installed on the two lower seats 32. When the distance between the two sliding seats 19 is adjusted, the lifting plate 17 will be driven to lift and lower through the cooperation of the connecting rods 20 and the lower seats 32, adjusting the height of the sintering heater 27.

[0025] Among them, the lifting component further includes an upper cavity 23. The upper cavity 23 is arranged inside the sintering box 1. Two sliding grooves 21 are formed in the inner top surface of the sintering box 1. The two sliding grooves 21 communicate with the upper cavity 23. Two racks 24 are slidably mounted on the inner bottom surface of the upper cavity 23. A second gear 25 is rotatably mounted on the inner bottom surface of the upper cavity 23. The two racks 24 are located on both sides of the second gear 25. The two racks 24 are meshed with the second gear 25. Two sliders 22 are slidably mounted in the two sliding grooves 21 respectively. The tops of the two sliders 22 are fixedly connected to the bottom surfaces of the two racks 24 respectively. The bottoms of the two racks 24 are fixedly connected to the top surfaces of the two sliding seats 19 respectively. A motor B 26 is fixedly mounted on the top surface of the sintering box 1. The bottom end of the output shaft of the motor B 26 is fixedly connected to the top end of the second gear 25. Starting the motor B 26 drives the second gear 25 to rotate. When the second gear 25 rotates, it will drive the two racks 24 to move. When the two racks 24 move, the distance between the two sliding seats 19 will be adjusted through the two sliders 22.

[0026] Among them, the driving component includes a toothed ring 4. The toothed ring 4 is rotatably mounted on the inner side wall of the circular groove 3. A plurality of rotating shafts 8 are rotatably mounted on the inner bottom surface of the circular groove 3. A first gear 9 is fixedly mounted on the outer side wall of each of the plurality of rotating shafts 8. The plurality of first gears 9 are meshed with the toothed ring 4. A second bevel gear 10 is fixedly mounted on the top end of each of the plurality of rotating shafts 8. A first bevel gear 6 is rotatably mounted on one side of each of the plurality of mounting plates 5. One end of each of the plurality of first bevel gears 6 is fixedly connected to one end of each of the plurality of fan blades 7. The plurality of first bevel gears 6 are respectively meshed with the plurality of second bevel gears 10. When one of the rotating shafts 8 rotates, it will drive the first bevel gear 6 to rotate. When the first bevel gear 6 rotates, it will drive the plurality of rotating shafts 8 to rotate simultaneously. When the plurality of rotating shafts 8 rotate simultaneously, the plurality of fan blades 7 will be driven to rotate through the plurality of second bevel gears 10 and the plurality of first bevel gears 6. The plurality of fan blades 7 will accelerate the fluidity of the gas environment inside the sintering box 1, thereby improving the uniformity of the gas environment around the motor A 14, further improving the uniformity of the temperature around the formed gear 30, effectively improving the sintering efficiency of the formed gear 30, and thus effectively improving the quality of the formed gear 30.

[0027] Among them, a lower cavity 15 is arranged inside the sintering box 1. A motor A 14 is fixedly mounted on the inner top surface of the lower cavity 15. The top end of the output shaft of the motor A 14 is fixedly connected to the bottom end of one of the rotating shafts 8. Starting the motor A 14 drives one of the rotating shafts 8 to rotate.

[0028] Among them, positioning holes 31 are formed in the top surfaces of the plurality of gear placement rings 12. A plurality of support columns 13 are fixedly mounted on the bottom surfaces of the plurality of gear placement rings 12. The plurality of support columns 13 are respectively movably sleeved with the plurality of positioning holes 31. By providing the plurality of support columns 13 and the plurality of positioning holes 31, it is convenient for the plurality of gear placement rings 12 to be stacked together.

[0029] Among them, a plurality of heat delivery holes 29 are formed in the outer side wall of the sleeve 18, and the plurality of heat delivery holes 29 are evenly distributed at equal intervals on the outer side wall of the sleeve 18. By providing the heat delivery holes 29, the plurality of heat delivery holes 29 will evenly deliver the high-temperature gas to the plurality of formed gears 30, so that the formed gears 30 are evenly heated.

[0030] Among them, a plurality of through holes 16 are formed in the outer side walls of the plurality of gear placement rings 12, and the plurality of through holes 16 are evenly distributed at equal intervals on the outer side walls of the gear placement rings 12. By providing the plurality of through holes 16, the plurality of through holes 16 will also evenly disperse the high-temperature gas to the plurality of formed gears 30, so that the formed gears 30 are more evenly heated.

[0031] During use: when sintering the formed gear 30, place the formed gear 30 on the plurality of gear placement rings 12, then sleeve the gear placement rings 12 and the formed gear 30 on the formed gear 30 to stack and install the plurality of gear placement rings 12. After the gear placement rings 12 and the formed gear 30 are installed on the sleeve 18, start the lifting assembly to drive the lifting plate 17 to descend. When the lifting plate 17 descends, the sintering heater 27 is brought close to the lower formed gear 30. After the heat outlet pipe 28 is sleeved in the sleeve 18, start the sintering heater 27. The sintering heater 27 generates hot air to sinter the formed gear 30. During the sintering process, by providing the heat delivery holes 29, the plurality of heat delivery holes 29 will evenly deliver the high-temperature gas to the plurality of formed gears 30, so that the formed gears 30 are evenly heated. By providing the plurality of through holes 16, the plurality of through holes 16 will also evenly disperse the high-temperature gas to the plurality of formed gears 30, so that the formed gears 30 are more evenly heated.

[0032] When sintering the formed gear 30, start the motor A14 to drive one of the rotating shafts 8 to rotate. When one of the rotating shafts 8 rotates, it will drive the first bevel gear 6 to rotate. When the first bevel gear 6 rotates, it will drive a plurality of rotating shafts 8 to rotate simultaneously. When the plurality of rotating shafts 8 rotate simultaneously, a plurality of fan blades 7 will be driven by a plurality of second bevel gears 10 and a plurality of first bevel gears 6. The plurality of fan blades 7 will accelerate the fluidity of the gas environment in the sintering box 1, thereby realizing the improvement of the uniformity of the gas environment around the motor A14, further improving the uniformity of the temperature around the formed gear 30, effectively improving the sintering efficiency of the formed gear 30, and thus effectively improving the quality of the formed gear 30.

[0033] The embodiments of the present application are described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. An automobile transmission gear manufacturing device sintered based on powder metallurgy technology, including a sintering box (1), characterized in that: A movable door (2) is arranged on one side of the sintering box (1), a circular groove (3) is opened on the inner bottom surface of the sintering box (1), and a fixed table (11) is fixedly installed on the inner bottom surface of the circular groove (3); A sleeve (18), the sleeve (18) is fixedly installed on the top surface of the fixed table (11), a plurality of gear placement rings (12) are arranged on the top surface of the fixed table (11), the plurality of gear placement rings (12) are movably sleeved with the sleeve (18), and a plurality of formed gears (30) are arranged on the plurality of gear placement rings (12), and the plurality of formed gears (30) are movably sleeved with the sleeve (18); A lifting plate (17), the lifting plate (17) is slidably installed on the inner side wall of the sintering box (1), a sintering heater (27) is fixedly installed on the bottom surface of the lifting plate (17), a plurality of heat outlet pipes (28) are fixedly installed on the bottom surface of the sintering heater (27), and one of the heat outlet pipes (28) is sleeved and matched with the sleeve (18); A lifting assembly, the lifting assembly is arranged in the sintering box (1) and is used to drive the lifting plate (17) to lift; A plurality of mounting plates (5), the plurality of mounting plates (5) are fixedly installed on the inner bottom surface of the circular groove (3), and a plurality of fan blades (7) are rotatably installed on one side of the plurality of mounting plates (5); A driving assembly, the driving assembly is arranged in the movable door (2) and is used to drive the plurality of fan blades (7) to rotate.

2. The manufacturing device for an automotive transmission gear sintered based on powder metallurgy technology according to claim 1, wherein, The lifting assembly includes two sliding seats (19), the two sliding seats (19) are slidably installed on the inner top surface of the sintering box (1), connecting rods (20) are rotatably installed on the two sliding seats (19), two lower seats (32) are fixedly installed on the top surface of the lifting plate (17), and the bottom ends of the two connecting rods (20) are respectively rotatably installed on the two lower seats (32).

3. The manufacturing device for automotive transmission gears sintered based on powder metallurgy technology according to claim 2, wherein The lifting assembly further includes an upper cavity (23), the upper cavity (23) is arranged in the sintering box (1), two sliding grooves (21) are opened on the inner top surface of the sintering box (1), the two sliding grooves (21) are communicated with the upper cavity (23), two racks (24) are slidably installed on the inner bottom surface of the upper cavity (23), a second gear (25) is rotatably installed on the inner bottom surface of the upper cavity (23), the two racks (24) are located on both sides of the second gear (25), the two racks (24) are meshed with the second gear (25), sliders (22) are slidably installed in the two sliding grooves (21), the top ends of the two sliders (22) are respectively fixedly connected to the bottom surfaces of the two racks (24), the bottom ends of the two racks (24) are respectively fixedly connected to the top surfaces of the two sliding seats (19), and a motor B (26) is fixedly installed on the top surface of the sintering box (1), and the bottom end of the output shaft of the motor B (26) is fixedly connected to the top end of the second gear (25).

4. A manufacturing device for automotive transmission gears sintered based on powder metallurgy technology according to claim 1, characterized in that, The driving assembly includes a toothed ring (4), the toothed ring (4) is rotatably installed on the inner side wall of the circular groove (3), a plurality of rotating shafts (8) are rotatably installed on the inner bottom surface of the circular groove (3), first gears (9) are fixedly installed on the outer side walls of the plurality of rotating shafts (8), the plurality of first gears (9) are engaged with the toothed ring (4), second bevel gears (10) are fixedly installed at the tops of the plurality of rotating shafts (8), first bevel gears (6) are rotatably installed on one side of the plurality of mounting plates (5), one ends of the plurality of first bevel gears (6) are fixedly connected to one ends of the plurality of fan blades (7) respectively, and the plurality of first bevel gears (6) are engaged with the plurality of second bevel gears (10) respectively.

5. A manufacturing device for automotive transmission gears sintered based on powder metallurgy technology according to claim 4, characterized in that, A lower cavity (15) is provided in the sintering box (1), a motor A (14) is fixedly installed on the inner top surface of the lower cavity (15), and the top end of the output shaft of the motor A (14) is fixedly connected to the bottom end of one of the rotating shafts (8).

6. The manufacturing device for an automotive transmission gear sintered based on powder metallurgy technology according to claim 1, characterized in that, Positioning holes (31) are formed in the top surfaces of the plurality of gear placement rings (12), a plurality of support columns (13) are fixedly installed on the bottom surfaces of the plurality of gear placement rings (12), and the plurality of support columns (13) are movably sleeved with the plurality of positioning holes (31) respectively.

7. A manufacturing apparatus for an automotive transmission gear sintered based on powder metallurgy technology according to claim 1, wherein, A plurality of heat delivery holes (29) are formed in the outer side wall of the sleeve (18), and the plurality of heat delivery holes (29) are evenly distributed at equal intervals on the outer side wall of the sleeve (18).

8. A manufacturing device for an automotive transmission gear sintered based on powder metallurgy technology according to claim 1, characterized in that, A plurality of through holes (16) are formed in the outer side walls of the plurality of gear placement rings (12), and the plurality of through holes (16) are evenly distributed at equal intervals on the outer side walls of the gear placement rings (12).

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