Gear hot die forging die with cooling channel

Abstract

The utility model relates to the technical field of gear dies, and discloses a gear hot die forging die with a cooling channel, a lower die is mounted at the center of the upper surface of a bottom plate, a positioning column for positioning is fixedly mounted at the side end, corresponding to the lower die, of the upper surface of the bottom plate, and a top plate for supporting is fixedly mounted at the upper end of the positioning column; the upper heat conduction layer is in close contact with the cooling water pipe, and the lower heat conduction layer is connected with the cooling water pipe through a connecting pipe, so that the double heat conduction structure greatly improves the heat conduction efficiency, and the mold can be rapidly cooled in cooperation with the heat dissipation effect of the ventilation opening; and the cooling water pipe, the auxiliary pipe and the annular pipe are arranged in a surrounding manner, so that all parts of the mold can be uniformly cooled, the local overheating or supercooling condition is avoided, the uniformity of a mold temperature field is ensured, and the consistency and stability of gear forming are favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of gear mold technology, specifically a gear hot forging mold with cooling channels. Background Technology

[0002] In the field of modern mechanical manufacturing, gears are key transmission components, and their quality and performance play a decisive role in the operation of mechanical equipment. Hot forging process has become one of the important methods of gear manufacturing due to its high efficiency and high quality. As the core equipment of hot forging process, the performance of the mold directly affects the forming quality and production efficiency of the gear.

[0003] During hot forging, the die generates a lot of heat due to contact with the high-temperature blank and friction. If heat cannot be dissipated in time and effectively, the die temperature will be too high, which will lead to a decrease in material hardness and wear resistance, thereby affecting the die service life and the forming accuracy of the gear. At the same time, the stability of the die structure is also crucial. Problems such as inaccurate positioning and unstable component connections will cause gear size deviations and reduce the product qualification rate.

[0004] For example, a Chinese patent for a hot forging press gear mold, patent publication number CN207982197U, improves the forming quality of gears to a certain extent by optimizing the mold structure design. However, the patent only solves some problems in the mold structure and does not set up an effective cooling channel. During long-term hot forging, the mold cannot dissipate heat in time, which can easily lead to thermal fatigue, deformation, and other problems, resulting in a shortened mold life and difficulty in ensuring the forming accuracy of the gears. In addition, the patent also has shortcomings in mold positioning and shock absorption, making it difficult to meet the stable production needs under complex working conditions.

[0005] To address the aforementioned issues, we propose a gear hot forging die with a cooling channel. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a gear hot forging die with a cooling channel, thus solving the aforementioned problems.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a gear hot forging die with a cooling channel, comprising a base plate, a lower die mounted at the center of the upper surface of the base plate, a positioning post fixedly mounted on the upper surface of the base plate corresponding to the side end of the lower die for positioning, a top plate fixedly mounted at the upper end of the positioning post for support, a cylinder mounted at the center of the upper surface of the top plate, the lower end of the cylinder connected to a telescopic rod, the lower end of the telescopic rod penetrating the surface of the top plate and connected to a lifting plate, and an upper die fixedly mounted at the center of the lower surface of the lifting plate, further comprising:

[0008] A cooling assembly, installed inside the lower mold, is a structure used to cool the cavity.

[0009] Preferably, a slot is provided at the center of the upper surface of the lower mold, a cavity for support is installed inside the slot, a plurality of positioning shafts for positioning are installed on the surface of the cavity, and a positioning groove is provided on the surface of the lower mold corresponding to the position of the positioning shaft, and the positioning shaft is installed inside the positioning groove.

[0010] Preferably, the surface of the cavity is provided with a plurality of fixing shafts for fixing at the side end corresponding to the positioning shaft, and the surface of the lower mold is provided with a plurality of fixing grooves that match the fixing shafts, and the lower end of the fixing shaft is installed inside the fixing groove.

[0011] Preferably, a buffer pad for cushioning is provided at the lower end of the cavity corresponding to the interior of the lower mold, and the buffer pad is provided with an upper heat-conducting layer for heat conduction. The upper heat-conducting layer is fixedly installed on the inner wall surface of the lower mold.

[0012] Preferably, the cooling assembly includes a cooling water pipe, a connecting pipe, and a lower heat-conducting layer. A pipe groove is provided on the lower surface of the upper heat-conducting layer, and a cooling water pipe for cooling is installed inside the pipe groove. The cooling water pipe is installed in a circular pattern on the lower surface of the upper heat-conducting layer. A plurality of connecting pipes for heat conduction are evenly installed on the lower surface of the cooling water pipe, and the lower end of the connecting pipe is connected to the lower heat-conducting layer.

[0013] Preferably, an auxiliary pipe is provided at one inner end of the cooling water pipe, and multiple ring pipes are evenly arranged on the surface of the auxiliary pipe. Water inlet pipes for inlet and outlet are fixedly installed at both ends of the cooling water pipe.

[0014] Preferably, multiple ventilation openings are evenly provided on the surface of the lower mold corresponding to the side end of the lower heat-conducting layer.

[0015] Compared with the prior art, this utility model provides a gear hot forging die with a cooling channel, which has the following beneficial effects:

[0016] 1. This gear hot forging die with cooling channels has an upper heat-conducting layer in close contact with the cooling water pipe, and a lower heat-conducting layer connected to the cooling water pipe through a connecting pipe. This dual heat-conducting structure greatly improves the heat transfer efficiency. Combined with the heat dissipation effect of the ventilation opening, the die can be cooled down quickly and maintain a good working condition. The surrounding layout of the cooling water pipe and its auxiliary pipes and ring pipes can make all parts of the die cool evenly, avoiding local overheating or overcooling, ensuring the uniformity of the die temperature field, which is conducive to improving the consistency and stability of gear forming.

[0017] 2. This gear hot forging die with cooling channels uses positioning pins to precisely position the lower die and top plate. The cavity is also stably connected to the lower die via positioning and fixing shafts, ensuring that the positions of all parts of the die are fixed during the hot forging process. This avoids gear forming errors caused by component displacement, thereby significantly improving the forming accuracy and product quality of the gear. At the same time, the buffer pad effectively buffers the impact force of the upper die pressing down when the die is working, further ensuring the stability of the die structure and providing a reliable guarantee for precise forming. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the cooling component of this utility model;

[0020] Figure 3 This is a schematic diagram of the cavity of this utility model.

[0021] In the diagram: 1. Base plate; 2. Lower mold; 3. Positioning pin; 4. Top plate; 5. Cylinder; 6. Telescopic rod; 7. Lifting plate; 8. Buffer pad; 9. Cooling water pipe; 10. Connecting pipe; 11. Lower heat-conducting layer; 12. Vent; 13. Water inlet pipe; 14. Upper heat-conducting layer; 15. Positioning shaft; 16. Fixed shaft; 17. Cavity. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3A gear hot forging die with a cooling channel includes a base plate 1, a lower die 2 mounted at the center of the upper surface of the base plate 1, a positioning post 3 fixedly mounted on the upper surface of the base plate 1 corresponding to the side end of the lower die 2, a top plate 4 fixedly mounted at the upper end of the positioning post 3 for support, a cylinder 5 mounted at the center of the upper surface of the top plate 4, the lower end of the cylinder 5 connected to a telescopic rod 6, the lower end of the telescopic rod 6 penetrating the surface of the top plate 4 and connected to a lifting plate 7, and an upper die fixedly mounted at the center of the lower surface of the lifting plate 7. The die also includes a cooling assembly. Inside the lower mold 2, there is a structure for cooling the cavity 17. The base plate 1 serves as the supporting foundation for the entire mold, providing a stable load-bearing platform. The lower mold 2 is installed at the center of the upper surface of the base plate 1 and is precisely positioned by the positioning pin 3 to ensure the accuracy of the installation position of the lower mold 2. The top plate 4 is fixed in a suitable position by the support at the upper end of the positioning pin 3, forming the upper frame structure of the mold. The cylinder 5 is installed at the center of the upper surface of the top plate 4, and its telescopic rod 6 passes through the top plate 4 and is connected to the lifting plate 7, providing a power source for the up and down movement of the upper mold.

[0024] Furthermore, a slot is provided at the center of the upper surface of the lower mold 2, and a cavity 17 for support is installed inside the slot. Multiple positioning shafts 15 for positioning are installed on the surface of the cavity 17. Positioning grooves are provided on the surface of the lower mold 2 corresponding to the positions of the positioning shafts 15. The positioning shafts 15 are installed inside the positioning grooves, and the cavity 17 is positioned with the lower mold 2 through the positioning shafts 15.

[0025] Furthermore, a plurality of fixing shafts 16 for fixing are evenly arranged on the surface of the cavity 17 corresponding to the side end of the positioning shaft 15, and a plurality of fixing grooves matching the fixing shafts 16 are evenly arranged on the surface of the lower mold 2. The lower end of the fixing shaft 16 is installed inside the fixing groove. The cavity 17 is fixed to the lower mold 2 through the fixing shafts 16, ensuring the stability of the cavity 17 during the mold operation process.

[0026] Furthermore, a buffer pad 8 is provided at the lower end of the cavity 17 inside the lower mold 2 for cushioning. The buffer pad 8 is provided with an upper heat-conducting layer 14 for heat conduction. The upper heat-conducting layer 14 is fixedly installed on the inner wall surface of the lower mold 2. The buffer pad 8 is provided at the lower end of the cavity 17 inside the lower mold 2 to play a buffering role, reduce the impact force on the lower mold 2 and cavity 17 when the upper mold is pressed down, and at the same time protect the mold structure and extend the service life of the mold.

[0027] Furthermore, the cooling assembly includes cooling water pipes 9, connecting pipes 10, and a lower heat-conducting layer 11. A pipe groove is provided on the lower surface of the upper heat-conducting layer 14, and cooling water pipes 9 for cooling are installed inside the pipe groove. The cooling water pipes 9 are installed in a circular pattern on the lower surface of the upper heat-conducting layer 14. Multiple connecting pipes 10 for heat conduction are evenly installed on the lower surface of the cooling water pipes 9. The lower end of the connecting pipe 10 is connected to the lower heat-conducting layer 11. The inlet pipe 13 serves as the inlet and outlet of the cooling medium and is connected to an external cooling water source. When the temperature of the mold rises during hot forging, the low-temperature cooling medium flows into the cooling water pipes 9 through the inlet pipe 13. During the process of flowing around the lower end of the cavity 17, it absorbs a large amount of heat generated by the hot forging of the mold, thereby reducing the temperature of the mold. The connecting pipes 10 evenly installed on the lower surface of the cooling water pipes 9 are connected to the lower heat-conducting layer 11, which quickly conducts the heat absorbed by the cooling water pipes 9 to the lower heat-conducting layer 11.

[0028] Furthermore, an auxiliary pipe is provided at the inner end of the cooling water pipe 9, and multiple ring pipes are evenly distributed on the surface of the auxiliary pipe. Water inlet pipes 13 for inlet and outlet are fixedly installed at both ends of the cooling water pipe 9. The auxiliary pipe and the evenly distributed ring pipes on the surface of the cooling water pipe 9 increase the cooling area. The ring pipes are set at several node positions of the gear corresponding to the auxiliary pipe.

[0029] Furthermore, multiple ventilation openings 12 are evenly arranged on the surface of the lower mold 2 corresponding to the side end of the lower heat-conducting layer 11, and the ventilation openings 12 dissipate heat from the lower heat-conducting layer 11.

[0030] Structural Description:

[0031] 1. Base plate: The base plate is the basic support structure of the entire mold, providing a stable load-bearing platform for the mold. Its shape is usually a plate-like structure with a large area. It is fixedly connected to the ground or equipment workbench to ensure the stability of the mold during operation. During mold assembly, the upper surface of the base plate serves as the reference surface for the installation of other components, supporting important components such as the lower mold.

[0032] 2. Lower mold: The lower mold is installed at the center of the upper surface of the base plate and is one of the key components for the hot forging of gears. A slot is set at the center of its upper part for installing the cavity. The surface of the lower mold is provided with positioning grooves and fixing grooves corresponding to the positioning shaft and fixing shaft of the cavity, respectively, to achieve precise positioning and stable fixation of the cavity. At the same time, a buffer pad installation space is set inside the lower mold corresponding to the lower end of the cavity, and a structure for installing cooling components is also designed inside to meet the cooling requirements of the mold.

[0033] 3. Positioning pin: The positioning pin is a columnar structure that is fixedly installed on the upper surface of the base plate, corresponding to the side end of the lower mold. Its main function is to position the lower mold and the top plate, ensuring the accuracy of the installation position of the lower mold and the relative position accuracy between the top plate and the lower mold. The upper end of the positioning pin is fixedly connected to the top plate. In this way, it plays a guiding and positioning role in the mold assembly process, ensuring the consistency of the installation position of each component of the mold.

[0034] 4. Top plate: The top plate is plate-shaped and installed on the upper end of the positioning column. It serves as a supporting component for the upper structure of the mold. Its main function is to provide an installation platform for components such as cylinders. At the same time, it cooperates with the positioning column to form the upper frame structure of the mold, ensuring the stability of the overall structure of the mold. A cylinder mounting hole is provided at the center of the upper surface of the top plate for installing cylinders.

[0035] 5. Cylinder: The cylinder is installed at the center of the upper surface of the top plate and is the core component that provides the power for the upper mold to move up and down. It drives the telescopic rod to extend and retract through the reciprocating motion of the internal piston. The working principle of the cylinder is based on air pressure drive. When compressed air is introduced, the piston moves under the action of air pressure, thereby realizing the extension and retraction of the telescopic rod, which in turn drives the lifting plate and the upper mold connected to the telescopic rod to move up and down, completing the mold closing and opening actions in the hot forging process.

[0036] 6. Telescopic rod: The telescopic rod is a component that connects the cylinder and the lifting plate. One end of the telescopic rod is connected to the piston of the cylinder, and the other end passes through the top plate and is fixedly connected to the lifting plate. Driven by the cylinder, the telescopic rod can realize the up and down extension and retraction movement, and transmit the power of the cylinder to the lifting plate, thereby driving the upper mold connected to the lifting plate to move up and down to meet the requirements of hot forging process for mold movement.

[0037] 7. Lifting plate: The lifting plate is a plate-shaped structure installed at the lower end of the telescopic rod. The upper mold is fixedly installed at the center of its lower surface. Driven by the telescopic rod, the lifting plate moves up and down, thereby driving the upper mold to cooperate with the cavity in the lower mold to complete the hot forging of the metal billet. The lifting plate plays the role of connecting and transmitting power, ensuring that the upper mold can move up and down accurately and stably.

[0038] 8. Buffer pad: The buffer pad is set at the lower end of the corresponding cavity inside the lower mold. It is usually made of elastic material, such as rubber. Its main function is to buffer the impact force of the upper mold pressing down on the lower mold and cavity when the upper and lower molds are closed during the hot forging process, reduce the collision between mold parts, protect the mold structure, and avoid mold damage due to excessive impact force. It also helps to improve the accuracy and quality of gear forming.

[0039] 9. Cooling water pipe: The cooling water pipe is installed in the groove on the lower surface of the upper heat-conducting layer inside the lower mold, and is tightly fitted to the lower end area of ​​the cavity in a wrap-around manner. An auxiliary pipe is set at one end of the cooling water pipe, and multiple ring pipes are evenly distributed on the surface of the auxiliary pipe. This structural design increases the cooling area and improves the cooling efficiency. Water inlet pipes are installed at both ends of the cooling water pipe to connect to the external cooling water source, so that the cooling medium can circulate in the water pipe and carry away the heat generated by the mold during the hot forging process.

[0040] 10. Connecting pipe: The connecting pipe is evenly installed on the lower surface of the cooling water pipe, and its lower end is connected to the lower heat conduction layer. The function of the connecting pipe is to quickly conduct the heat absorbed by the cooling water pipe to the lower heat conduction layer. By increasing the heat conduction path and contact area, the heat conduction efficiency is improved, so that the heat generated by the mold can be quickly transferred out, thereby enhancing the cooling effect of the mold.

[0041] 11. Lower heat-conducting layer: The lower heat-conducting layer is installed inside the lower mold and connected to the lower end of the connecting pipe. Its material has good thermal conductivity. The main function of the lower heat-conducting layer is to receive the heat conducted from the connecting pipe and further diffuse and conduct the heat. By cooperating with the ventilation holes on the surface of the lower mold, the heat is dissipated into the surrounding environment, so as to effectively cool the mold and maintain the mold within a suitable working temperature range.

[0042] 12. Ventilation openings: Ventilation openings are evenly distributed on the surface of the lower mold, corresponding to the position of the lower heat-conducting layer. The function of the ventilation openings is to provide a channel for heat dissipation inside the mold. Through natural or forced convection of air, heat is accelerated from inside the mold to the external environment, improving the heat dissipation efficiency of the mold and preventing the mold from overheating due to heat accumulation, which would affect the mold performance and gear molding quality.

[0043] 13. Water inlet pipe: The water inlet pipe is fixedly installed at both ends of the cooling water pipe, serving as the inlet and outlet of the cooling medium. It is used to connect the external cooling water source and drainage system. Through the water inlet pipe, the low-temperature cooling medium can flow into the cooling water pipe, absorb the heat of the mold, and then be discharged through the water inlet pipe, realizing the circulation of the cooling medium in the mold cooling system and ensuring the continuous and effective cooling effect of the mold.

[0044] 14. Upper heat-conducting layer: The upper heat-conducting layer is fixedly installed on the inner wall surface of the lower mold and is in close contact with the cooling water pipe. The upper heat-conducting layer is made of a high thermal conductivity material. Its function is to further improve the heat conduction efficiency and quickly transfer the heat absorbed by the cooling water pipe to other parts of the lower mold. Together with the lower heat-conducting layer and the vent, it forms an efficient heat dissipation system to ensure the uniform distribution and rapid reduction of the mold temperature.

[0045] 15. Positioning Shaft: The positioning shaft is a shaft-shaped structure that is installed on the surface of the cavity. Its shape and size match the positioning groove on the lower mold. The main function of the positioning shaft is to achieve precise positioning between the cavity and the lower mold. During the mold assembly process, the positioning shaft is inserted into the corresponding positioning groove of the lower mold to ensure the accurate position of the cavity in the mold, thereby ensuring the accuracy of gear hot forging.

[0046] 16. Fixed shaft: The fixed shaft is also a component installed on the surface of the cavity. Its lower end can be installed in the fixing groove of the lower mold. The function of the fixed shaft is to further strengthen the connection between the cavity and the lower mold. By cooperating with the positioning shaft, the cavity is firmly fixed on the lower mold, preventing the cavity from shifting or loosening during hot forging, and ensuring the stability and reliability of the mold operation.

[0047] 17. Cavity: The cavity is installed in the empty groove in the center of the upper surface of the lower mold. It is a key part of the mold used to form gears. Its internal shape matches the shape of the gear to be formed. The metal billet undergoes plastic deformation in the cavity under high temperature and high pressure, and is finally formed into a gear. The cavity is positioned and fixed with the lower mold through positioning shaft and fixing shaft, ensuring that it can withstand huge pressure and friction during hot forging, and ensuring the quality and precision of gear forming.

[0048] Instructions for use

[0049] Working principle: The base plate 1 serves as the supporting foundation for the entire mold, providing a stable load-bearing platform. The lower mold 2 is installed at the center of the upper surface of the base plate 1, and is precisely positioned by the positioning pins 3, ensuring the accuracy of the installation position of the lower mold 2. The top plate 4 is fixed in a suitable position by the support at the upper end of the positioning pins 3, forming the upper frame structure of the mold. The cylinder 5 is installed at the center of the upper surface of the top plate 4, and its telescopic rod 6 passes through the top plate 4 and is connected to the lifting plate 7, providing the power source for the up and down movement of the upper mold. During the hot forging process, the metal billet to be processed is placed in the cavity 17, which is located in the lower mold. Within the hollow groove at the center of the upper surface of mold 2, cavity 17 is positioned and fixed to lower mold 2 via positioning shaft 15 and fixing shaft 16, ensuring the stability of cavity 17 during mold operation. When cylinder 5 is activated, telescopic rod 6 drives lifting plate 7 and upper mold fixed at the center of the lower surface of lifting plate 7 to move downward. Upper mold contacts and applies pressure to the metal blank in cavity 17, causing the metal blank to undergo plastic deformation under high temperature and high pressure, gradually forming the required gear shape. During this process, buffer pad 8 is placed inside lower mold 2 corresponding to the lower end of cavity 17, playing a buffering role and reducing the impact. The upper mold's downward pressing action impacts the lower mold 2 and cavity 17, protecting the mold structure and extending its service life. Cooling water pipes 9 are installed inside the lower mold 2 within the lower heat-conducting layer 14's lower groove, tightly fitting around the lower end of cavity 17. An auxiliary pipe at the inner end of the cooling water pipe 9 and evenly distributed ring pipes on its surface increase the cooling area and improve cooling efficiency. The inlet pipe 13 serves as both the inlet and outlet for the cooling medium, connecting to an external cooling water source. When the mold temperature rises during hot forging, the low-temperature cooling medium flows into the cooling water pipe 9 through the inlet pipe 13. During the flow process around the lower end of the cavity 17, the heat absorbed by the mold due to hot forging is reduced, thus lowering the mold temperature. The connecting pipes 10, which are evenly installed on the lower surface of the cooling water pipe 9, are connected to the lower heat-conducting layer 11, which quickly conducts the heat absorbed by the cooling water pipe 9 to the lower heat-conducting layer 11. Then, through the ventilation holes 12 evenly arranged on the surface of the lower mold 2, the heat is dissipated to the surrounding environment, thus achieving effective cooling of the mold. The upper heat-conducting layer 14 is fixedly installed on the inner wall surface of the lower mold 2 and is in close contact with the cooling water pipe 9, further improving the heat conduction efficiency and ensuring the stability and efficiency of the cooling effect.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gear hot forging die with a cooling channel, comprising a base plate (1), a lower die (2) installed at the center of the upper surface of the base plate (1), a positioning post (3) for positioning fixedly installed on the upper surface of the base plate (1) corresponding to the side end of the lower die (2), a top plate (4) for support fixedly installed at the upper end of the positioning post (3), a cylinder (5) installed at the center of the upper surface of the top plate (4), the lower end of the cylinder (5) connected to a telescopic rod (6), the lower end of the telescopic rod (6) penetrating the surface of the top plate (4) and connected to a lifting plate (7), and an upper die fixedly installed at the center of the lower surface of the lifting plate (7), characterized in that, Also includes: A cooling assembly, installed inside the lower mold (2), is a structure used to cool the cavity (17).

2. The gear hot forging die with cooling channel according to claim 1, characterized in that: A slot is provided at the center of the upper surface of the lower mold (2), and a cavity (17) for support is installed inside the slot. Multiple positioning shafts (15) for positioning are installed on the surface of the cavity (17). Positioning grooves are provided on the surface of the lower mold (2) corresponding to the positions of the positioning shafts (15), and the positioning shafts (15) are installed inside the positioning grooves.

3. The gear hot forging die with cooling channel according to claim 2, characterized in that: The surface of the cavity (17) is uniformly provided with multiple fixing shafts (16) for fixing corresponding to the side end of the positioning shaft (15). The surface of the lower mold (2) is uniformly provided with multiple fixing grooves that match the fixing shafts (16). The lower end of the fixing shaft (16) is installed inside the fixing groove.

4. A gear hot forging die with a cooling channel according to claim 1, characterized in that: The lower mold (2) has a buffer pad (8) at the lower end of the cavity (17) corresponding to the interior of the lower mold (2). The buffer pad (8) is provided with an upper heat-conducting layer (14) for heat conduction. The upper heat-conducting layer (14) is fixedly installed on the inner wall surface of the lower mold (2).

5. A gear hot forging die with a cooling channel according to claim 1, characterized in that: The cooling assembly includes a cooling water pipe (9), a connecting pipe (10), and a lower heat-conducting layer (11). A pipe groove is provided on the lower surface of the upper heat-conducting layer (14), and a cooling water pipe (9) for cooling is installed inside the pipe groove. The cooling water pipe (9) is installed in a circular pattern on the lower surface of the upper heat-conducting layer (14). Multiple connecting pipes (10) for heat conduction are evenly installed on the lower surface of the cooling water pipe (9), and the lower end of the connecting pipe (10) is connected to the lower heat-conducting layer (11).

6. A gear hot forging die with a cooling channel according to claim 5, characterized in that: An auxiliary pipe is provided at one inner end of the cooling water pipe (9), and multiple ring pipes are evenly arranged on the surface of the auxiliary pipe. Water inlet pipes (13) for inlet and outlet are fixedly installed at both ends of the cooling water pipe (9).

7. A gear hot forging die with a cooling channel according to claim 1, characterized in that: Multiple ventilation openings (12) are evenly arranged on the surface of the lower mold (2) corresponding to the side end of the lower heat-conducting layer (11).

Images