Combined type cooling forming tool for forged steel piston blank

Abstract

The utility model relates to the technical field of metal forging, and discloses a combined type cooling forming tool of a forged steel piston blank, which comprises a forging die, a plurality of cooling cavities are arranged in the forging die, and water supply mechanisms for injecting cold water into the cooling cavities are arranged on two sides of the forging die. A concentrated water return mechanism for converging cooling water is arranged at the bottom end of the forging die, a die cavity is formed in the middle of the top end of the forging die, and a cooling fan for air cooling of the top end of the piston blank is arranged at the top end of the die cavity; the water supply mechanisms are arranged on the two sides of the forging die, cooling water can be input into the cooling cavity in a staggered mode from different directions, the piston blank cooling uniformity is improved, the phenomenon that due to insufficient cooling of the flowing tail end, the piston blank shrinks and deforms is avoided, and the piston machining quality is improved; and the output cooling water can be converged through the centralized water return mechanism.

Description

Technical Field

[0001] This utility model relates to the field of metal forging technology, specifically a composite cooling and forming tooling for forged steel piston blanks. Background Technology

[0002] Forged steel pistons are widely used in internal combustion engines, compressors and other fields due to their high strength and high temperature resistance. Traditional piston blanks are usually cooled naturally or by a single medium after forging, which leads to problems such as uneven cooling, internal stress concentration and deformation, affecting the accuracy of subsequent processing and service life.

[0003] The "Precision Forging Mold for Steel Piston" disclosed in application number "202320241320.0" includes a processing platform and a movable table. The top of the movable table has two rows of sliding holes. The top of the processing platform is equipped with two rows of positioning rods that extend upward through the corresponding sliding holes. The processing platform has an I-shaped structure. A detachable mold device is provided between the top of the processing platform and the bottom of the movable table. A cooling chamber is provided inside the processing platform. Two sets of cooling holes are provided through the top two sides of the processing platform. A connector assembly is provided on the outer side of each cooling hole. A cooling device connecting the cooling chamber and the corresponding cooling hole is provided in a groove on the outer side of the processing platform. In this utility model, the compression-molded workpiece can be cooled quickly, avoiding local high temperature on the top of the processing platform during high-temperature forging, which not only affects the cooling of the workpiece but also makes the top area of ​​the processing platform prone to deformation during die casting.

[0004] However, the above method still has the following drawbacks: While it is possible to cool the workpiece by injecting cold water into the cooling chamber, the cooling water flows unidirectionally along the cooling chamber, making it difficult to ensure the uniformity of cooling. The end of the flow is prone to insufficient cooling, which leads to product shrinkage and deformation, reducing the processing quality of the workpiece. In addition, the cooling water is far away from the top of the workpiece, making it difficult to cool the top of the workpiece. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a composite cooling and forming fixture for forged steel piston blanks, which has the advantages of uniform cooling and avoidance of product shrinkage and deformation, thus solving the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a composite cooling and forming fixture for forged steel piston blanks, including a forging die, the forging die having several cooling chambers inside, water supply mechanisms for injecting cold water into the cooling chambers on both sides of the forging die, a centralized return water mechanism for collecting cooling water at the bottom of the forging die, a mold cavity in the middle of the top of the forging die, a cooling fan for air cooling the top of the piston blank at the top of the mold cavity, and a drive mechanism for driving the cooling fan on one side of the forging die.

[0007] As a preferred embodiment of this utility model, the water supply mechanism includes a cold water pipe, a plurality of distribution pipes are fixedly provided on one side of the cold water pipe, a plurality of water inlet connectors communicating with the interior of the cooling cavity are fixedly provided on both sides of the forging mold, the water outlet end of the distribution pipe is engaged with the water inlet connector, a conduit is fixedly provided at one end of the cold water pipe, a solenoid valve is fixedly connected to the water inlet end of the conduit, and a water inlet pipe is fixedly connected to the water inlet end of the solenoid valve.

[0008] As a preferred embodiment of this utility model, a plug is fixedly provided at the other end of the cold water pipe, and pipe clamps are snapped onto both sides of the cold water pipe. One side of the pipe clamp is fixedly connected to the forging die by screws.

[0009] As a preferred technical solution of this utility model, the centralized water return mechanism includes a water return tank, and several water return connectors are fixedly provided on both sides of the water return tank. A water outlet pipe is snapped into one side of each water return connector. Several water outlet connectors communicating with the interior of the cooling chamber are fixedly provided on both sides of the forging mold. The water inlet end of the water outlet pipe is snapped into the water outlet connector. A water return pipe is fixedly provided in the middle of one side of the water return tank.

[0010] As a preferred embodiment of this utility model, the inside of the return water tank is welded with several support columns to support it, and a bottom plate is welded to the bottom of the return water tank, with positioning holes provided at the four corners of the bottom plate.

[0011] As a preferred embodiment of the present invention, the driving mechanism includes a support, one side of which is fixedly connected to the middle of one side of the forging die, a support shaft is rotatably connected to the middle of the support, a support arm is fixedly provided at the top of the support shaft, one side of the support arm is fixedly connected to a cooling fan, and a motor for driving the support shaft is fixedly installed at the bottom of the support.

[0012] As a preferred embodiment of this utility model, the bottom end of the support is reinforced by two reinforcing ribs, and the bottom end of the support arm is reinforced by a second reinforcing rib.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The composite cooling and forming fixture for the forged steel piston blank, by setting water supply mechanisms on both sides of the forging die, can input cooling water into the cooling chamber from different directions in an alternating manner, which improves the uniformity of cooling of the piston blank, avoids insufficient cooling at the flow end, and prevents the piston blank from shrinking and deforming, thus improving the processing quality of the piston. The centralized return water mechanism can collect the output cooling water and discharge it in a centralized manner, which facilitates the circulation of cooling water.

[0015] 2. The composite cooling forming fixture for the forged steel piston blank can air-cool the top of the piston through the cooling fan, avoiding the phenomenon of slow cooling of the piston top. The composite cooling of air cooling and water cooling improves the cooling effect of the piston. While supporting the cooling fan, the cooling fan can be moved horizontally to avoid the cooling fan from obstructing the closing and opening of the forging die. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the forging die of this utility model;

[0019] Figure 4 This is a schematic diagram of the water-cooling mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the centralized water return mechanism of this utility model;

[0021] Figure 6 This is a schematic diagram of the drive mechanism of this utility model.

[0022] In the diagram: 1. Forging die; 2. Cooling chamber; 3. Water supply mechanism; 301. Cold water pipe; 302. Distribution pipe; 303. Conduit; 304. Solenoid valve; 305. Inlet pipe; 306. Pipe clamp; 4. Centralized water return mechanism; 401. Water return tank; 402. Support column; 403. Water return pipe; 404. Base plate; 405. Water return connector; 406. Outlet pipe; 5. Cooling fan; 6. Drive mechanism; 601. Support; 602. Support shaft; 603. Motor; 604. Support arm; 605. Rib plate one; 606. Rib plate two; 7. Die cavity; 8. Inlet connector; 9. Outlet connector. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 A composite cooling and forming fixture for forged steel piston blanks includes a forging die 1. The forging die 1 has several cooling chambers 2 inside. Water supply mechanisms 3 for injecting cold water into the cooling chambers 2 are located on both sides of the forging die 1. By setting water supply mechanisms 3 on both sides of the forging die 1, cooling water can be staggered into the cooling chambers 2 from different directions, improving the uniformity of cooling of the piston blank and avoiding insufficient cooling at the flow end, which could lead to piston blank shrinkage and deformation, thus improving the processing quality of the piston. The bottom end of the forging die 1 is equipped with a cooling water inlet... The centralized return water mechanism 4 can collect the output cooling water and discharge it in a centralized manner, which facilitates the circulation of cooling water. The top of the forging die 1 has a cavity 7 in the middle. The top of the cavity 7 is equipped with a cooling fan 5 for air cooling the top of the piston blank. The side of the forging die 1 is equipped with a drive mechanism 6 for driving the cooling fan 5. The cooling fan 5 can air cool the top of the piston, avoiding the phenomenon of slow cooling of the piston top. The combined cooling of air cooling and water cooling improves the cooling effect of the piston.

[0025] In this embodiment, preferably, the water supply mechanism 3 includes a cold water pipe 301. Several distribution pipes 302 are fixedly provided on one side of the cold water pipe 301. Several water inlet connectors 8 communicating with the interior of the cooling chamber 2 are fixedly provided on both sides of the forging mold 1. The outlet end of the distribution pipe 302 is engaged with the water inlet connector 8. A conduit 303 is fixedly provided at one end of the cold water pipe 301. A solenoid valve 304 is fixedly connected to the inlet end of the conduit 303. A water inlet pipe 305 is fixedly connected to the inlet end of the solenoid valve 304. A plug is fixedly provided at the other end of the cold water pipe 301. Pipe clamps 306 are engaged on both sides of the cold water pipe 301. One side of the pipe clamp 306 is fixedly connected to the forging mold 1 by screws. The pipe clamp 306 can provide support for the cold water pipe 301. By opening the solenoid valve 304, cold water can be delivered by the cold water pipe 301. The cold water can enter the cooling chamber 2 through the distribution pipes 302. Cold water can be input into the cooling chamber 2 from different directions.

[0026] In this embodiment, preferably, the centralized water return mechanism 4 includes a water return tank 401. Several water return connectors 405 are fixedly provided on both sides of the water return tank 401. A water outlet pipe 406 is snapped onto one side of each water return connector 405. Several water outlet connectors 9 communicating with the interior of the cooling chamber 2 are fixedly provided on both sides of the forging mold 1. The inlet end of the water outlet pipe 406 is snapped onto the water outlet connector 9. A water return pipe 403 is fixedly provided in the middle of one side of the water return tank 401. Several pairs of... The support column 402 provides support, and the bottom plate 404 is welded to the bottom of the return water tank 401. The four corners of the bottom plate 404 are provided with positioning holes. The support column 402 can support the interior of the return water tank 401. The return water tank 401 is not easily deformed under force. The return water pipe 403 can be installed through the water outlet connector 9 and the return water connector 405. The return water pipe 403 can collect the water inside the cooling chamber 2 and flow to the return water tank 401. The return water tank 401 can return the water to the water cooling equipment through the return water pipe 403.

[0027] In this embodiment, preferably, the drive mechanism 6 includes a support 601. One side of the support 601 is fixedly connected to the middle of one side of the forging mold 1. A support shaft 602 is rotatably connected to the middle of the support 601. A support arm 604 is fixedly provided at the top of the support shaft 602. One side of the support arm 604 is fixedly connected to the cooling fan 5. A motor 603 for driving the support shaft 602 is fixedly installed at the bottom of the support 601. Reinforcement is welded to both sides of the bottom of the support 601. The bottom end of the support arm 604 is reinforced by a first stiffener plate 605 and a second stiffener plate 606. The first stiffener plate 605 can reinforce the support 601, and the second stiffener plate 606 can reinforce the support arm 604. The cooling fan 5 can be supported by the support shaft 602 and the support arm 604. The motor 603 drives the support shaft 602, which can drive the support arm 604 to rotate and move the cooling fan 5 horizontally away, thus preventing the cooling fan 5 from obstructing the closing and opening of the forging die 1.

[0028] In use, the operator connects the inlet pipe 305 of the water supply mechanism 3 to the outlet of the cold water equipment, and then connects the return pipe 403 of the centralized return water mechanism 4 to the return end of the cold water equipment. After the piston blank is forged by the forging die 1, the solenoid valves 304 of the two water supply mechanisms 3 are opened, and cold water can be transported by the two cold water pipes 301. The cold water can enter the cooling chamber 2 through the distribution pipe 302. The cooling water can be input into the cooling chamber 2 in different directions, which can improve the uniformity of cooling of the piston blank and avoid insufficient cooling at the flow end, which leads to the shrinkage and deformation of the piston blank.

[0029] After the water flows through the cooling chamber 2, the return water pipe 403 of the centralized return water mechanism 4 can collect the water inside the cooling chamber 2 to the return water tank 401. The return water tank 401 can return the water to the water cooling equipment through the return water pipe 403. At the same time, the top of the piston is cooled by air by the cooling fan 5, which can avoid the phenomenon of slow cooling of the top of the piston. The combined cooling of air cooling and water cooling improves the cooling effect of the piston.

[0030] After the piston blank is cooled, the motor 603 of the drive mechanism 6 drives the support shaft 602, which can drive the support arm 604 to rotate and horizontally move the cooling fan 5 away. This prevents the cooling fan 5 from obstructing the closing and opening of the forging die 1 and ensures that the forging die 1 can process the piston normally.

[0031] 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 combined cooling forming tool for forging steel piston blanks, comprising a forging die (1), characterized in that: The inside of the forging die (1) is provided with a plurality of cooling cavities (2), both sides of the forging die (1) are provided with water supply mechanisms (3) for injecting cold water into the cooling cavities (2), and the bottom end of the forging die (1) is provided with a concentrated backwater mechanism (4) for converging the cooling water.

2. The composite cooling forming tooling for a wrought steel piston blank of claim 1 wherein: The water supply mechanism (3) comprises a cold water pipe (301), a plurality of distribution pipes (302) are fixedly arranged on one side of the cold water pipe (301), a plurality of water inlet connectors (8) are fixedly arranged on both sides of the forging die (1) and communicate with the inside of the cooling cavities (2), the water outlet ends of the distribution pipes (302) are clampedly connected with the water inlet connectors (8), one end of the cold water pipe (301) is fixedly provided with a conduit (303), the water inlet end of the conduit (303) is fixedly connected with an electromagnetic valve (304), and the water inlet end of the electromagnetic valve (304) is fixedly connected with a water inlet pipe (305).

3. The composite cooling and forming tooling for a forged steel piston blank of claim 2, wherein: The other end of the cold water pipe (301) is fixedly provided with a plug, pipe clamps (306) are clampedly connected on both sides of the cold water pipe (301), and one side of the pipe clamps (306) is fixedly connected with the forging die (1) through screws.

4. The composite cooling and forming tooling for forging steel piston blanks of claim 1 wherein: The concentrated backwater mechanism (4) comprises a backwater tank (401), a plurality of backwater connectors (405) are fixedly arranged on both sides of the backwater tank (401), water outlet pipes (406) are clampedly connected on one side of the backwater connectors (405), a plurality of water outlet connectors (9) are fixedly arranged on both sides of the forging die (1) and communicate with the inside of the cooling cavities (2), the water inlet ends of the water outlet pipes (406) are clampedly connected with the water outlet connectors (9), and a backwater pipe (403) is fixedly arranged in the middle of one side of the backwater tank (401).

5. The composite cooling forming tooling for forged steel piston blanks of claim 4 wherein: A plurality of supporting columns (402) are welded in the backwater tank (401) for supporting the backwater tank (401), and a bottom plate (404) is welded at the bottom end of the backwater tank (401).

6. The composite cooling and forming tooling for forged steel piston blanks of claim 1 wherein: The driving mechanism (6) comprises a support base (601), one side of the support base (601) is fixedly connected with the middle of one side of the forging die (1), a supporting shaft (602) is rotatably connected to the middle of the support base (601), a supporting arm (604) is fixedly arranged at the top end of the supporting shaft (602), one side of the supporting arm (604) is fixedly connected with the heat dissipation fan (5), and a motor (603) is fixedly arranged at the bottom end of the support base (601) for driving the supporting shaft (602).

7. The composite cooling forming tooling for forged steel piston blanks of claim 6 wherein: The bottom end of the support base (601) is welded with a first reinforcing plate (605) on both sides for reinforcing the support base (601), and the bottom end of the supporting arm (604) is welded with a second reinforcing plate (606) for reinforcing the supporting arm (604).

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