Combined die forging die

Abstract

The utility model discloses a combined die forging die which comprises a lower die and an upper die, a connecting mechanism is arranged on the upper die and the lower die, the connecting mechanism comprises a plurality of communicating pipes, a water inlet pipe and a water outlet pipe, the communicating pipes are respectively installed on the upper die, the water inlet pipe is communicated with the lower die, and the water outlet pipe is communicated with the lower die. The combined die forging die comprises a water inlet pipe, a communicating pipe is installed at one end of the water inlet pipe, a water outlet pipe is installed at the other end of the water inlet pipe, the water inlet pipe, the water outlet pipe and the communicating pipe are each provided with a bent pipe, each bent pipe is coaxially provided with a sealing pipe, and the sealing pipe on the communicating pipe is provided with a round head. And the industrial pain point that the upper die in a traditional die is difficult to dissipate heat is thoroughly solved. Different from the design that only the lower die can be effectively cooled in the market mainstream die, the technology successfully constructs a cooling circulation network integrating the upper die and the lower die through the ingenious communication pipeline design.

Description

Technical Field

[0001] This utility model relates to the field of combined forging die technology, and more specifically, it relates to a combined forging die. Background Technology

[0002] In the field of modern metal forming and manufacturing, modular forging dies are key equipment for the efficient mass production of metal parts, and their technical performance directly affects product quality and production efficiency. However, modular forging dies currently on the market generally suffer from a significant technical limitation: the uneven and incomplete design of their heat dissipation systems. Specifically, in existing die designs, the cooling system is mainly concentrated in the lower die section. Effective heat dissipation is achieved by opening water channels inside the lower die base and connecting them to external cooling pipes. In stark contrast, the cooling system design for the upper die section is clearly inadequate. Because the upper die needs to move up and down frequently and is directly connected to the hydraulic or mechanical pressure system, it is difficult to set up a stable and reliable cooling pipe system in the upper die section in traditional designs. This imbalance in heat dissipation capacity leads to the upper die temperature being significantly higher than the lower die temperature during continuous forging, resulting in an uneven temperature field distribution throughout the die. Especially in high-temperature forging processes, the upper die temperature may rapidly rise to a critical value, which not only accelerates the thermal fatigue aging of the die material but also causes inconsistent temperatures between the forging and die contact surfaces, ultimately affecting the dimensional accuracy and internal microstructure uniformity of the finished product.

[0003] A deeper analysis of this technical bottleneck reveals a series of chain reactions in actual production. First, to prevent overheating and damage to the upper die, operators are often forced to reduce continuous working time, inserting additional cooling periods during production, significantly reducing production efficiency and equipment utilization. In mass production scenarios, this efficiency loss can translate into significant cost increases. Second, excessively high upper die temperatures accelerate the degradation of the surface treatment layer and the formation of thermal cracks in the die body. Especially for high-precision forgings requiring fine surface quality, the reduced die life directly translates into more frequent die replacements and maintenance, increasing downtime and maintenance costs. Third, uneven temperature leading to inconsistent forging deformation makes it difficult to guarantee product consistency, increasing the allowance and difficulty of subsequent machining. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a combined forging die to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a combined forging die, including a lower die and an upper die, wherein the upper die and the lower die are provided with a connecting mechanism, the connecting mechanism including a connecting pipe, a water inlet pipe and a water outlet pipe, wherein multiple connecting pipes are provided, and multiple connecting pipes are respectively installed on the upper die, the water inlet pipe is connected to the lower die, and the other end of the water inlet pipe is installed with a water outlet pipe, the water inlet pipe, the water outlet pipe and the connecting pipe are respectively provided with a bend pipe, each bend pipe is respectively provided with a sealing pipe coaxially, the sealing pipe on the connecting pipe is provided with a round head, the sealing pipe on the water inlet pipe and the water outlet pipe are provided with an expansion sleeve, the round head and the expansion sleeve are respectively coaxially provided, the multiple sealing pipes are respectively provided with a one-way groove, a sealing disc is fitted in the one-way groove, a guide rod is installed on the upper die, a guide hole is provided on the lower die, and the guide rod is slidably connected in the guide hole.

[0008] The present invention is further configured such that each of the plurality of sealing discs is provided with a pressure rod coaxially, and each pair of pressure rods is coaxially positioned.

[0009] The present invention is further configured such that a transverse tube is connected and installed on the side wall of each of the sealing tubes, and an adjusting block is slidably provided in each of the transverse tubes.

[0010] The present invention is further configured such that a guide strip is provided on the inner wall of the transverse tube, and a guide groove is provided on the side wall of the adjusting block, the guide groove being slidably connected within the guide strip.

[0011] The present invention is further configured such that a screw is provided in the internal thread of the transverse tube, and a push rod is provided on the screw, the push rod abutting against the adjusting block.

[0012] The present invention is further configured such that an inner disc is slidably provided inside the sealing tube, a lifting disc is provided on the inner disc, and an inclined surface is provided on the adjusting block, the inclined surface being engaged with the lifting disc.

[0013] The present invention is further configured such that a central hole is provided on the inner disk, a central rod is slidably provided in the central hole, and the central rod is installed on the sealing disk.

[0014] The present invention is further configured such that a spring is sleeved on the intermediate rod, one end of the spring abuts against the inner disc, and the other end of the spring abuts against the sealing disc.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a combined forging die, which has the following advantages:

[0017] The most significant technological breakthrough of this innovative combined forging die lies in its revolutionary bidirectional balanced heat dissipation system, which completely solves the industry pain point of difficult heat dissipation in the upper die of traditional dies. Unlike mainstream dies that only effectively cool the lower die, this technology successfully constructs an integrated cooling circulation network for both the upper and lower dies through a clever connecting pipe design. Its core innovation lies in a fluid transmission mechanism that automatically connects or disconnects with the upper die's lifting and lowering movement, allowing cooling water to flow smoothly into the upper die during operation, cool, and then return to the outlet pipe. This design makes the overall temperature field distribution of the die more balanced, significantly improving the forging quality. From a thermodynamic perspective, the advantages of this design are particularly prominent. In traditional dies, the upper die temperature is usually much higher than the lower die, leading to uneven cooling of the upper and lower surfaces of the forging, resulting in inconsistent internal stress and deformation. This innovative design significantly reduces the temperature difference between the upper and lower dies, effectively eliminating the adverse effects of temperature gradients. Using this technology significantly extends the die's service life, especially for precision dies sensitive to thermal fatigue. More importantly, the balanced temperature field significantly improves the dimensional accuracy of the forgings, greatly enhances the consistency of surface quality, and significantly reduces the subsequent machining allowance and difficulty.

[0018] Beyond its breakthrough in heat dissipation, this mold also features significant innovations in its connection system and sealing technology. Its automatic alignment connection system, through the precise fit of guide rods and guide holes, ensures that the upper and lower molds maintain accurate alignment during high-speed reciprocating motion, achieving extremely high connection precision even on high-speed forging equipment. In particular, the coaxial design of the sealing tube and the round head ensures no fluid leakage while withstanding the mechanical stress of repeated connection and separation, which is crucial for stable operation in industrial environments. The sealing system employs an innovative pressure balance design. When the upper and lower molds contact, the precise torque generated by the mutual contact of the pressure rods on both sides simultaneously releases the seal between the two sealing discs and the one-way groove, allowing the fluid channel to open smoothly. This design ensures that cooling water only flows when the mold is closed, effectively preventing coolant leakage when the mold is open. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a combined forging die according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the two sealing tubes in this utility model;

[0021] Figure 3 This is a cross-sectional view of the sealing tube in this utility model;

[0022] Figure 4 This is a cross-sectional view of the internal disk in this utility model.

[0023] Figure 5 This is a cross-sectional view of the transverse tube in this utility model.

[0024] In the diagram: 1. Lower mold; 2. Upper mold; 3. Connecting pipe; 4. Inlet pipe; 5. Outlet pipe; 6. Bending pipe; 7. Sealing pipe; 8. Round head; 9. One-way groove; 10. Sealing disc; 11. Guide hole; 12. Pressure rod; 13. Adjusting block; 14. Guide strip; 15. Guide groove; 16. Screw; 17. Top rod; 18. Inner disc; 19. Lifting disc; 20. Inclined surface; 21. Middle hole; 22. Middle rod; 23. Horizontal tube; 24. Spring; 25. Expansion sleeve; 101. Guide rod. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0028] Please see Figure 1-5A combined forging die includes a lower die 1 and an upper die 2. A connecting mechanism is provided on the upper die 2 and the lower die 1. The connecting mechanism includes a connecting pipe 3, a water inlet pipe 4, and a water outlet pipe 5. Multiple connecting pipes 3 are provided, and each connecting pipe 3 is respectively installed on the upper die 2. The water inlet pipe 4 is connected to the lower die 1, and the other end of the water inlet pipe 4 is connected to the water outlet pipe 5. Bending pipes 6 are respectively provided on the water inlet pipe 4, the water outlet pipe 5, and the connecting pipes 3. A sealing pipe 7 is coaxially provided on each bending pipe 6. The sealing tube 7 on the connecting pipe 3 is equipped with a round head 8. The sealing tubes 7 on the inlet pipe 4 and the outlet pipe 5 are equipped with expansion sleeves 25. The round head 8 and the expansion sleeve 25 are coaxially arranged. One-way grooves 9 are opened on multiple sealing tubes 7, and sealing discs 10 are fitted inside the one-way grooves 9. Guide rods 101 are installed on the upper mold 2, and guide holes 11 are opened on the lower mold 1. The guide rods 101 are slidably connected in the guide holes 11. Pressure rods 12 are coaxially arranged on multiple sealing discs 10. Each pair of pressure rods 12 is coaxially aligned. A transverse tube 23 is connected to the side wall of each sealing tube 7. An adjusting block 13 is slidably mounted inside each transverse tube 23. A guide strip 14 is provided on the inner wall of the transverse tube 23. A guide groove 15 is formed on the side wall of the adjusting block 13, and the guide groove 15 is slidably connected to the guide strip 14. A screw 16 is threaded inside the transverse tube 23, and a push rod 17 is mounted on the screw 16, abutting against the adjusting block 13. An inner disc 18 is slidably provided inside the sealing tube 7. A lifting disc 19 is provided on the inner disc 18. An inclined surface 20 is provided on the adjusting block 13. The inclined surface 20 is locked on the lifting disc 19. A central hole 21 is provided on the inner disc 18. A central rod 22 is slidably provided in the central hole 21. The central rod 22 is installed on the sealing disc 10. A spring 24 is sleeved on the central rod 22. One end of the spring 24 abuts against the inner disc 18, and the other end of the spring 24 abuts against the sealing disc 10.

[0029] In this embodiment, when forging the workpiece, the workpiece is placed in the lower die 1, and then the upper die 2 is pressed down. Then, the guide rod 101 is inserted into the guide hole 11, and the two sealing pipes 7 are in contact with each other. The seal between the two sealing discs 10 and the one-way groove 9 can be released by the mutual contact of the two pressure rods 12. Therefore, the water inlet pipe 4, the water outlet pipe 5 and the connecting pipe 3 will be connected. At this time, the cooling water can not only flow through the water inlet pipe 4 through the lower die 1 and be discharged, but also flow through the upper connecting pipe 3 through the upper die 2 and be discharged to the water outlet pipe 5 for cooling, thereby improving the convenience of use.

[0030] More specifically, when it is necessary to adjust the sealing effect, since the screw 16 is threadedly connected to the transverse tube 23, the position of the top rod 17 and the adjusting block 13 can be driven by rotation, which will cause the inclined plane 20 to push the lifting plate 19 to slide up and down. Since the spring 24 is sleeved on the intermediate rod 22, the sealing force between the sealing plate 10 and the one-way groove 9 can be changed, thereby completing the sealing process.

[0031] In summary, when using or operating the equipment: when forging a workpiece, the workpiece is placed in the lower die 1, and then the upper die 2 is pressed down. The guide rod 101 is then inserted into the guide hole 11, and the two sealing pipes 7 are in contact with each other. The seal between the two sealing discs 10 and the one-way groove 9 can be released by the mutual contact of the two pressure rods 12. Therefore, the inlet pipe 4, the outlet pipe 5 and the connecting pipe 3 will be connected. At this time, the cooling water can not only flow through the inlet pipe 4 through the lower die 1 to be discharged, but also flow through the upper connecting pipe 3 through the upper die 2 to be discharged to the outlet pipe 5 for cooling, thereby improving the convenience of use.

[0032] When the sealing effect needs to be adjusted, since the screw 16 is threadedly connected to the transverse tube 23, the position of the top rod 17 and the adjusting block 13 can be driven by rotation, which will cause the inclined plane 20 to push the lifting plate 19 to slide up and down. Since the spring 24 is sleeved on the intermediate rod 22, the sealing force between the sealing plate 10 and the one-way groove 9 can be changed, thereby completing the sealing process.

[0033] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A combined forging die, comprising a lower die (1) and an upper die (2), characterized in that: The upper mold (2) and lower mold (1) are provided with a connecting mechanism, which includes a connecting pipe (3), an inlet pipe (4), and an outlet pipe (5). Multiple connecting pipes (3) are provided, and each connecting pipe (3) is installed on the upper mold (2). The inlet pipe (4) is connected to the lower mold (1), and the other end of the inlet pipe (4) is connected to the outlet pipe (5). The inlet pipe (4), outlet pipe (5), and connecting pipe (3) are each provided with a bend (6), and each bend (6) is coaxially provided with a sealing pipe (7). (3) The sealing tube (7) is provided with a round head (8). The sealing tube (7) on the water inlet pipe (4) and the water outlet pipe (5) is equipped with an expansion sleeve (25). The round head (8) and the expansion sleeve (25) are coaxially arranged. A one-way groove (9) is opened on each of the multiple sealing tubes (7). A sealing disc (10) is fitted in the one-way groove (9). A guide rod (101) is installed on the upper mold (2). A guide hole (11) is opened on the lower mold (1). The guide rod (101) is slidably connected in the guide hole (11).

2. The combined forging die according to claim 1, characterized in that: Each of the multiple sealing discs (10) is provided with a pressure rod (12) on the same axis, and each pair of pressure rods (12) is provided on the same axis.

3. A combined forging die according to claim 2, characterized in that: Each of the sealing tubes (7) has a transverse tube (23) connected to its side wall, and each of the transverse tubes (23) has an adjusting block (13) slidably installed inside it.

4. A combined forging die according to claim 3, characterized in that: The inner wall of the transverse tube (23) is provided with a guide strip (14), and the side wall of the adjusting block (13) is provided with a guide groove (15), which is slidably connected in the guide strip (14).

5. A combined forging die according to claim 4, characterized in that: The transverse tube (23) is threaded with a screw (16), and a push rod (17) is provided on the screw (16), which abuts against the adjusting block (13).

6. A combined forging die according to claim 5, characterized in that: An inner disc (18) is slidably provided inside the sealing tube (7), and a lifting disc (19) is provided on the inner disc (18). An inclined surface (20) is provided on the adjusting block (13), and the inclined surface (20) is locked on the lifting disc (19).

7. A combined forging die according to claim 6, characterized in that: The inner disk (18) has a central hole (21), and a central rod (22) is slidably disposed in the central hole (21). The central rod (22) is mounted on the sealing disk (10).

8. A combined forging die according to claim 7, characterized in that: A spring (24) is sleeved on the intermediate rod (22), one end of the spring (24) abuts against the inner disc (18), and the other end of the spring (24) abuts against the sealing disc (10).

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