Vacuum constant-temperature forging equipment

Abstract

The invention discloses vacuum constant-temperature forging equipment, and belongs to the technical field of metal forging, the vacuum constant-temperature forging equipment comprises a vacuum chamber, an annular injection molding box is fixedly mounted on the outer side of the vacuum chamber, supporting rods are fixedly mounted on the two sides of the vacuum chamber, a same top plate is fixedly mounted at the top ends of the two supporting rods, and a hydraulic cylinder is fixedly mounted at the bottom of the top plate; a push plate is fixedly installed on a piston of the hydraulic cylinder and slidably connected with the two supporting rods, and an opening is formed in the top of the vacuum chamber. Through mutual communication of an injection-molding barrel and an annular injection-molding box and mutual cooperation of a top ring and the annular injection-molding box, gas in the annular injection-molding box is injected into the injection-molding barrel under the action of the top ring, and heating plates are driven to move through a top pipe, so that the multiple heating plates can be attached to molds with different shapes; and when the die is heated, the periphery of the die can be heated in a balanced and isothermal mode, and precise forging and pressing of metal are facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal forging, and specifically relates to a vacuum constant-temperature forging device. Background Art

[0002] Isothermal forging is one of the key forming technologies for many important core components in the structures of aerospace aircraft and engines. Large key components such as fan blades, integral blisks of compressors, and turbine disks all need to be processed by isothermal die forging. Under vacuum conditions, since more heat-resistant molds can be used and oxidation problems can be significantly reduced, the surface quality, internal structure, and impurity content of forgings can be effectively controlled, the production cycle can be shortened, and plastic processing and forming of difficult-to-deform materials can be achieved. Therefore, developing large-scale vacuum isothermal forging equipment to meet the urgent needs of China's aerospace field for the forming of large-scale high-performance metal material complex components has important strategic significance for improving the manufacturing capacity of key components in the aerospace industry.

[0003] However, when heating the mold in the current vacuum isothermal forging equipment, generally the heat source is attached to the outside of the mold. Due to the different shapes of the molds for different forgings, it is difficult to evenly attach the heat source to the mold, resulting in uneven heating of the forgings inside the mold, affecting the accuracy of the forgings. And after forging is completed, it is generally cooled naturally, and a small part is cooled by air cooling, making it relatively slow to pick up and place the forgings, affecting the processing efficiency. To solve the above problems, a vacuum constant-temperature forging device is proposed in this application. Summary of the Invention

[0004] In view of the problems in the related art, the present invention provides a vacuum constant-temperature forging device to overcome the above technical problems existing in the related art.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A vacuum constant-temperature forging device includes a vacuum chamber. An annular injection box is fixedly installed on the outside of the vacuum chamber. Support rods are fixedly installed on both sides of the vacuum chamber. The same top plate is fixedly installed at the tops of the two support rods. A hydraulic cylinder is fixedly installed at the bottom of the top plate. A push plate is fixedly installed on the piston of the hydraulic cylinder. The push plate is slidably connected to the two support rods. An opening is provided at the top of the vacuum chamber. A placement table is installed on the bottom inner wall of the vacuum chamber. A base is fixedly installed at the bottom end of the vacuum chamber. A sealing mechanism includes a cover plate. A push rod is fixedly installed at the bottom of the push plate. The push rod is slidably connected to the cover plate. The cover plate cooperates with the opening. A vacuum pump is installed at the top of the cover plate. An upper pressing die is installed at the bottom end of the push rod. The isothermal heating mechanism includes a plurality of injection cylinders. A plurality of the injection cylinders are fixedly installed on the inner wall of the vacuum chamber. One end of the injection cylinder is slidably connected with a top pipe. One end of the top pipe is fixedly installed with a heat insulation plate. A heating plate is installed on one side of the heat insulation plate. The cooling mechanism includes a plurality of water injection cylinders. A plurality of water injection cylinders are fixedly installed on the bottom inner wall of the annular injection box. The top of the water injection cylinder is slidably connected with a water injection pipe. The bottom end of the water injection pipe is fixedly installed with a piston block. The piston block is slidably connected with the water injection cylinder. And the water injection pipe is communicated with the water injection cylinder. The top end of the water injection pipe is installed with a spray head.

[0006] Preferably, the sealing mechanism further includes a frustum-shaped top cylinder. The frustum-shaped top cylinder is fixedly installed at the bottom of the cover plate. A frustum-shaped baffle is installed on the bottom inner wall of the opening. A plurality of cushion rings are fixedly installed on the outer side of the frustum-shaped top cylinder. The cushion rings cooperate with the frustum-shaped baffle.

[0007] Through the cooperation between the frustum-shaped top cylinder and the frustum-shaped baffle, and under the action of the cushion rings, it is possible to seal the space between the frustum-shaped top cylinder and the frustum-shaped baffle, thereby increasing the sealing effect between the cover plate and the opening.

[0008] Preferably, two positioning rods are slidably connected to the push plate. The two positioning rods are fixedly connected with the cover plate. And a top spring is sleeved on the positioning rod. The top spring is located between the cover plate and the push plate. A stop block is fixedly installed at the top end of the positioning rod.

[0009] Through the sliding connection between the positioning rod and the push plate, it is possible to limit the position between the cover plate and the push plate. And under the action of the top spring, it is possible to press the cover plate, thereby increasing the sealing effect.

[0010] Preferably, the isothermal heating mechanism further includes a piston plate. The piston plate is rotatably installed at one end of the corresponding top pipe. The piston plate is slidably connected with the inner wall of the corresponding injection cylinder. Limiting rods are fixedly installed on both the top inner wall and the bottom inner wall of the injection cylinder. The limiting rods are slidably connected with the piston plate. The injection cylinder is communicated with the annular injection box.

[0011] Through the sliding connection between the piston plate and the inner wall of the injection cylinder, when gas is injected into the injection cylinder, the piston plate can push the top pipe to move. At the same time, the sliding connection between the limiting rod and the piston plate can limit the piston plate.

[0012] Preferably, a top ring is slidably connected to the inner wall of the annular injection box. Two first cylinders are fixedly installed on the top of the annular injection box. The pistons of the two first cylinders are fixedly connected with the top ring. The top ring cooperates with a plurality of injection cylinders.

[0013] The piston of the first cylinder drives the top ring to move. The top ring is slidably connected with the annular injection box, so that the gas in the annular injection box can be squeezed and injected into the injection cylinder.

[0014] Preferably, the cooling mechanism further includes a plurality of return springs fixedly installed on the top of the water injection cylinder, and the top ends of the return springs are fixedly connected to the bottom end of the nozzle. A screen is installed on the inner wall of one end of the injection cylinder, and the screen cooperates with the corresponding nozzle. An inlet is installed on one side of the water injection cylinder, and a one-way valve is provided on the inlet.

[0015] The water source in the water injection cylinder is ejected through the water injection pipe and the nozzle and acts on the screen, thereby wetting the screen, enabling the gas entering the injection cylinder to be quickly cooled, and at the same time enabling the water source on the screen to form an atomization and be ejected through the injection cylinder and the top pipe, thereby acting on the mold, thereby quickly cooling the mold and facilitating blanking. The setting of the inlet and the one-way valve can facilitate the injection of water into the water injection cylinder and prevent the water source in the water injection cylinder from leaking.

[0016] Preferably, a positioning box is fixedly installed at one end of the injection cylinder. A rack is slidably connected to the positioning box. One end of the injection cylinder is rotatably connected to a driven gear. The driven gear is slidably connected to the corresponding top pipe. The rack meshes with the driven gear. Two second cylinders are fixedly installed on the inner wall of the top of the vacuum chamber. The pistons of the two second cylinders are fixedly installed with the same moving ring. The moving ring is fixedly connected to a plurality of racks.

[0017] The piston of the second cylinder drives the moving ring to move. The moving ring drives a plurality of racks to move. The rack drives the driven gear to rotate through the mutual meshing with the driven gear. The driven gear drives the top pipe to rotate through the slidable connection with the top pipe. The setting of the positioning box can stabilize the meshing state of the rack and the driven gear.

[0018] Preferably, the driven gear is provided with a movable hole. Two limiting blocks are fixedly installed on the inner wall of the movable hole. The top pipe is slidably connected to the inner wall of the movable hole. Limiting grooves are opened at the top and bottom of the top pipe, and the limiting grooves are slidably connected to the corresponding limiting blocks.

[0019] Through the slidable connection between the limiting groove and the limiting block, the limiting operation can be performed between the driven gear and the top pipe, so that the rotating driven gear can drive the top pipe to rotate.

[0020] Preferably, one end of the top pipe is fixedly installed with an adjusting plate. A guide hole is opened on the adjusting plate. A connection hole is opened on the piston plate. The connection hole cooperates with the guide hole.

[0021] Through the mutual cooperation between the connection hole and the guide hole on the adjusting plate, when the connection hole and the guide hole are in communication with each other, the gas on one side of the piston plate can be exported through the connection hole and the guide hole.

[0022] Preferably, a water baffle box is fixedly installed on one side of the adjusting plate. A through hole is provided on the top pipe. The through hole is located inside the water baffle box, and the guide hole is also located inside the water baffle box. An exhaust hole is provided at one end of the top pipe, and the exhaust hole penetrates through the heat insulation plate.

[0023] Through the arrangement of the water baffle box, it is convenient to collect the gas introduced by the guide hole, inject it into the top pipe through the through hole, and finally discharge it through the exhaust hole, so as to act on the mold through the heat insulation plate and blow air to cool the mold.

[0024] To sum up, the technical effects and advantages of the present invention are as follows: Through the mutual connection of the injection cylinder and the annular injection box, and the mutual cooperation of the top ring and the annular injection box, the gas in the annular injection box is injected into the injection cylinder under the action of the top ring, and the heating plate is driven to move through the top pipe, so that multiple heating plates can fit molds with different shapes, enabling the molds to be evenly heated isothermally around during heating, which is convenient for precise forging of metals.

[0025] Through the sliding connection of the piston block and the water injection cylinder, and the mutual cooperation of the spray head and the screen, and the mutual cooperation of the connection hole and the guide hole, the water source in the annular injection box can be injected into the gas in the injection cylinder, thereby acting on the mold, enabling the mold to be quickly cooled after forging is completed, facilitating blanking, and increasing work efficiency.

[0026] Through the mutual cooperation of the frustum-shaped top cylinder and the frustum-shaped baffle, and under the action of the gasket ring, the cover plate and the vacuum chamber can be hermetically placed, thereby ensuring the vacuum effect of the vacuum chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the annular injection box of the present invention; Figure 3 is a schematic diagram of the sealing mechanism structure of the present invention; Figure 4 is a schematic diagram of the internal structure of the vacuum chamber of the present invention; Figure 5 is a schematic diagram of the structure of the annular injection box of the present invention; Figure 6 is a schematic diagram of the structure of the cover plate and the frustum-shaped top cylinder of the present invention; Figure 7 is a schematic diagram of the isothermal heating mechanism structure of the present invention; Figure 8 is a schematic diagram of the internal sectional structure of the injection cylinder of the present invention; Figure 9 is a schematic diagram of the structure of the top end, piston plate, adjusting plate, driven gear and their components of the present invention; Figure 10 This is a schematic cross-sectional view of the water injection cylinder of the present invention.

[0028] In the figure: 1. Vacuum chamber; 2. Annular injection and pressing box; 3. Support rod; 4. Top plate; 5. Sealing mechanism; 51. Cover plate; 52. Frustum-shaped top cylinder; 53. Frustum-shaped baffle; 54. Gasket ring; 55. Top spring; 56. Positioning rod; 6. Isothermal heating mechanism; 61. Injection and pressing cylinder; 62. Top pipe; 63. Piston plate; 64. Heat insulation plate; 65. Heating plate; 66. Top ring; 67. First cylinder; 7. Cooling and temperature reduction mechanism; 71. Water injection cylinder; 72. Water injection pipe; 73. Return spring; 74. Sprinkler head; 75. Piston block; 76. Water inlet; 77. Exhaust hole; 8. Base; 9. Push plate; 10. Hydraulic cylinder; 11. Push rod; 12. Vacuum pump; 13. Placement table; 14. Moving ring; 15. Second cylinder; 16. Positioning box; 17. Rack; 18. Driven gear; 19. Limit block; 20. Limit groove; 21. Adjusting plate; 22. Water retaining box; 23. Connecting hole; 24. Guide hole; 25. Through hole; 26. Limit rod; 27. Upper pressing die; 28. Screen. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] Referring to Figure 1-10 , a vacuum constant temperature forging device includes a vacuum chamber 1. An annular injection and pressing box 2 is fixedly installed on the outside of the vacuum chamber 1. Support rods 3 are fixedly installed on both sides of the vacuum chamber 1. The tops of the two support rods 3 are fixedly installed with the same top plate 4. A hydraulic cylinder 10 is fixedly installed at the bottom of the top plate 4. A push plate 9 is fixedly installed on the piston of the hydraulic cylinder 10. The push plate 9 is slidably connected to the two support rods 3. An opening is provided at the top of the vacuum chamber 1. A placement table 13 is installed on the bottom inner wall of the vacuum chamber 1. A base 8 is fixedly installed at the bottom end of the vacuum chamber 1; The sealing mechanism 5 includes a cover plate 51. A push rod 11 is fixedly installed at the bottom of the push plate 9. The push rod 11 is slidably connected to the cover plate 51. The cover plate 51 cooperates with the opening. A vacuum pump 12 is installed on the top of the cover plate 51. The bottom end of the push rod 11 is installed with an upper pressing die 27; The isothermal heating mechanism 6 includes a plurality of injection and pressing cylinders 61. The plurality of injection and pressing cylinders 61 are fixedly installed on the inner wall of the vacuum chamber 1. One end of the injection and pressing cylinder 61 is slidably connected to a top pipe 62. One end of the top pipe 62 is fixedly installed with a heat insulation plate 64. A heating plate 65 is installed on one side of the heat insulation plate 64; The cooling mechanism 7 includes a plurality of water injection cylinders 71. The plurality of water injection cylinders 71 are fixedly installed on the bottom inner wall of the annular injection and pressing box 2. A water injection pipe 72 is slidably connected to the top of the water injection cylinder 71. A piston block 75 is fixedly installed at the bottom end of the water injection pipe 72. The piston block 75 is slidably connected to the water injection cylinder 71, and the water injection pipe 72 communicates with the water injection cylinder 71. A spray head 74 is installed at the top end of the water injection pipe 72.

[0031] Refer to Figure 2 and Figure 3 The sealing mechanism 5 further includes a frustum-shaped top cylinder 52. The frustum-shaped top cylinder 52 is fixedly installed at the bottom of the cover plate 51. A frustum-shaped baffle 53 is installed on the bottom inner wall of the opening. A plurality of gasket rings 54 are fixedly installed on the outer side of the frustum-shaped top cylinder 52. The gasket rings 54 cooperate with the frustum-shaped baffle 53. Two positioning rods 56 are slidably connected to the push plate 9. The two positioning rods 56 are fixedly connected to the cover plate 51, and a top spring 55 is sleeved on the positioning rods 56. The top spring 55 is located between the cover plate 51 and the push plate 9. A stop block is fixedly installed at the top end of the positioning rod 56. Through the sliding connection between the positioning rod 56 and the push plate 9, the position between the cover plate 51 and the push plate 9 can be limited, and under the action of the top spring 55, the cover plate 51 can be pressed, thereby increasing the sealing effect. Through the cooperation between the frustum-shaped top cylinder 52 and the frustum-shaped baffle 53, and under the action of the gasket rings 54, the sealing between the frustum-shaped top cylinder 52 and the frustum-shaped baffle 53 can be achieved, thereby increasing the sealing effect between the cover plate 51 and the opening.

[0032] Refer to Figure 4 The isothermal heating mechanism 6 further includes a piston plate 63. The piston plate 63 is rotatably installed at one end of the corresponding top pipe 62. The piston plate 63 is slidably connected to the inner wall of the corresponding injection cylinder 61. Limiting rods 26 are fixedly installed on both the top inner wall and the bottom inner wall of the injection cylinder 61. The limiting rods 26 are slidably connected to the piston plate 63. The injection cylinder 61 communicates with the annular injection and pressing box 2. A top ring 66 is slidably connected to the inner wall of the annular injection and pressing box 2. Two first cylinders 67 are fixedly installed at the top of the annular injection and pressing box 2. The pistons of the two first cylinders 67 are fixedly connected to the top ring 66. The top ring 66 cooperates with a plurality of injection cylinders 61. The piston of the first cylinder 67 drives the top ring 66 to move. Through the sliding connection between the top ring 66 and the annular injection and pressing box 2, the gas in the annular injection and pressing box 2 can be extruded and injected into the injection cylinder 61. When the injection cylinder 61 is filled with gas through the sliding connection between the piston plate 63 and the inner wall of the injection cylinder 61, the piston plate 63 can push the top pipe 62 to move. At the same time, through the sliding connection between the limiting rods 26 and the piston plate 63, the piston plate 63 can be limited.

[0033] Refer to Figure 2, the cooling mechanism 7 further includes a plurality of return springs 73. The plurality of return springs 73 are fixedly installed on the top of the water injection cylinder 71, and the top ends of the return springs 73 are fixedly connected to the bottom end of the nozzle 74. A screen 28 is installed on the inner wall of one end of the injection cylinder 61. The screen 28 cooperates with the corresponding nozzle 74. A water inlet 76 is installed on one side of the water injection cylinder 71. A one-way valve is provided on the water inlet 76. The water source in the water injection cylinder 71 is sprayed out through the water injection pipe 72 and the nozzle 74 and acts on the screen 28, thereby wetting the screen 28, enabling the gas entering the injection cylinder 61 to cool down quickly, and at the same time enabling the water source on the screen 28 to form an atomized state and be sprayed out through the injection cylinder 61 and the top pipe 62, thereby acting on the mold to facilitate blanking. The setting of the water inlet 76 and the one-way valve can facilitate the injection of water into the water injection cylinder 71 and prevent the water source in the water injection cylinder 71 from leaking out.

[0034] Refer to Figure 7 and Figure 9 , a positioning box 16 is fixedly installed at one end of the injection cylinder 61. A rack 17 is slidably connected to the positioning box 16. A driven gear 18 is rotatably connected to one end of the injection cylinder 61. The driven gear 18 is slidably connected to the corresponding top pipe 62. The rack 17 meshes with the driven gear 18. Two second cylinders 15 are fixedly installed on the inner wall of the top of the vacuum chamber 1. The pistons of the two second cylinders 15 are fixedly installed with the same moving ring 14. The moving ring 14 is fixedly connected to a plurality of racks 17. An activity hole is formed in the driven gear 18. Two limiting blocks 19 are fixedly installed on the inner wall of the activity hole. The top pipe 62 is slidably connected to the inner wall of the activity hole. Limiting grooves 20 are formed in both the top and bottom of the top pipe 62. The limiting grooves 20 are slidably connected to the corresponding limiting blocks 19. The piston of the second cylinder 15 drives the moving ring 14 to move. The moving ring 14 drives a plurality of racks 17 to move. The rack 17 drives the driven gear 18 to rotate through meshing with the driven gear 18. The driven gear 18 drives the top pipe 62 to rotate through the sliding connection with the top pipe 62. The setting of the positioning box 16 can stabilize the meshing state of the rack 17 and the driven gear 18. Through the sliding connection of the limiting groove 20 and the limiting block 19, the driven gear 18 and the top pipe 62 can be limited, so that the rotating driven gear 18 can drive the top pipe 62 to rotate.

[0035] Refer to Figure 9, one end of the pipe jacking 62 is fixedly installed with an adjusting plate 21. A guide hole 24 is provided on the adjusting plate 21. A connecting hole 23 is provided on the piston plate 63. The connecting hole 23 and the guide hole 24 cooperate with each other. One side of the adjusting plate 21 is fixedly installed with a water blocking box 22. A through hole 25 is provided on the pipe jacking 62. The through hole 25 is located inside the water blocking box 22, and the guide hole 24 is also located inside the water blocking box 22. An exhaust hole 77 is provided at one end of the pipe jacking 62. The exhaust hole 77 penetrates through the heat insulation plate 64. Through the mutual cooperation of the connecting hole 23 and the guide hole 24 on the adjusting plate 21, when the connecting hole 23 and the guide hole 24 are in communication with each other, the gas on one side of the piston plate 63 can be exported through the connecting hole 23 and the guide hole 24. Through the setting of the water blocking box 22, it is convenient to collect the gas introduced into the guide hole 24, and inject it into the pipe jacking 62 through the through hole 25, and finally discharge it through the exhaust hole 77, so as to act on the mold through the heat insulation plate 64 and blow air to cool the mold.

[0036] Working principle: During operation, place the forging die on the placement table 13, start the switch of the hydraulic cylinder 10. The piston of the hydraulic cylinder 10 drives the push plate 9 to move downward. The push plate 9 drives the push rod 11 and the cover plate 51 to move downward and reach above the vacuum chamber 1. Through the mutual cooperation of the frustum-shaped top cylinder 52 and the frustum-shaped baffle 53, and under the action of the gasket ring 54, it is possible to seal the space between the frustum-shaped top cylinder 52 and the frustum-shaped baffle 53, thereby enhancing the sealing effect between the cover plate 51 and the opening. Under the action of the top spring 55, the cover plate 51 can be pressed, further enhancing the sealing effect. At the same time, start the switch of the vacuum pump 12. The vacuum pump 12 evacuates the vacuum chamber 1, creating a vacuum state inside the vacuum chamber 1. Then start the switch of the first cylinder 67. The piston of the first cylinder 67 drives the top ring 66 to move downward. The top ring 66 squeezes the air below in the annular injection box 2. The gas in the annular injection box 2 is introduced into the injection cylinder 61 through mutual connection with the injection cylinder 61. Due to the sliding connection of the piston plate 63 with the inner wall of the injection cylinder 61, when gas is injected into the injection cylinder 61, the piston plate 63 can push the top pipe 62 to move. At the same time, the limiting rod 26 is slidably connected to the piston plate 63, enabling the piston plate 63 to be limited. The top pipe 62 drives the heat insulation plate 64 and the heating plate 65 to contact the periphery of the forging die. When heating the die, it can make the periphery of the die evenly heated isothermally, facilitating the precise forging of the metal. When the forging is completed, start the switch of the second cylinder 15. The piston of the second cylinder 15 drives the moving ring 14 to move downward. The moving ring 14 drives a plurality of racks 17 to move. The racks 17 drive the driven gear 18 to rotate through mutual meshing with the driven gear 18. The driven gear 18 drives the top pipe 62 to rotate through a sliding connection with the top pipe 62. The setting of the positioning box 16 can stabilize the meshing state of the rack 17 and the driven gear 18. Through the sliding connection of the limiting groove 20 and the limiting block 19, the driven gear 18 and the top pipe 62 can be limited, enabling the rotating driven gear 18 to drive the top pipe 62 to rotate. The rotating top pipe 62 drives the adjusting plate 21 to rotate. Through the mutual cooperation of the connecting hole 23 and the guide hole 24 on the adjusting plate 21, when the connecting hole 23 and the guide hole 24 are interconnected, the gas on one side of the piston plate 63 can be exported through the connecting hole 23 and the guide hole 24. Through the setting of the water blocking box 22, it is convenient to collect the gas introduced into the guide hole 24 and inject it into the top pipe 62 through the through hole 25, and finally discharge it through the exhaust hole 77. Thus, through the action of the heat insulation plate 64 on the die, the die is cooled by blowing. When the top ring 66 continues to move downward, the top ring 66 pushes the spray head 74 and the water injection pipe 72 downward. The water injection pipe 72 forms a squeeze on the lower part of the water injection cylinder 71 through the piston block 75 and is exported through the water injection pipe 72 and the spray head 74, acting on the screen 28, thereby wetting the screen 28 and enabling the gas entering the injection cylinder 61 to be quickly cooled.Meanwhile, it can also atomize the water source on the screen 28 to enhance the cooling effect.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vacuum constant temperature forging device, comprising a vacuum chamber (1), characterized in that, An annular injection and pressing box (2) is fixedly installed on the outer side of the vacuum chamber (1). Support rods (3) are fixedly installed on both sides of the vacuum chamber (1). The tops of the two support rods (3) are fixedly installed with the same top plate (4). A hydraulic cylinder (10) is fixedly installed at the bottom of the top plate (4). A push plate (9) is fixedly installed on the piston of the hydraulic cylinder (10). The push plate (9) is slidably connected to the two support rods (3). An opening is provided at the top of the vacuum chamber (1). A placing table (13) is installed on the bottom inner wall of the vacuum chamber (1). A base (8) is fixedly installed at the bottom end of the vacuum chamber (1); A sealing mechanism (5), including a cover plate (51). A push rod (11) is fixedly installed at the bottom of the push plate (9). The push rod (11) is slidably connected to the cover plate (51). The cover plate (51) cooperates with the opening. A vacuum pump (12) is installed on the top of the cover plate (51). An upper pressing die (27) is installed at the bottom end of the push rod (11); An isothermal heating mechanism (6), including a plurality of injection cylinders (61). The plurality of injection cylinders (61) are fixedly installed on the inner wall of the vacuum chamber (1). A top pipe (62) is slidably connected to one end of the injection cylinder (61). A heat insulation plate (64) is fixedly installed at one end of the top pipe (62). A heating plate (65) is installed on one side of the heat insulation plate (64); A cooling mechanism (7), including a plurality of water injection cylinders (71). The plurality of water injection cylinders (71) are fixedly installed on the bottom inner wall of the annular injection and pressing box (2). A water injection pipe (72) is slidably connected to the top of the water injection cylinder (71). A piston block (75) is fixedly installed at the bottom end of the water injection pipe (72). The piston block (75) is slidably connected to the water injection cylinder (71). And the water injection pipe (72) is communicated with the water injection cylinder (71). A spray head (74) is installed at the top end of the water injection pipe (72).

2. A vacuum constant temperature forging device according to claim 1, characterized in that, The sealing mechanism (5) further includes a frustum-shaped top cylinder (52). The frustum-shaped top cylinder (52) is fixedly installed at the bottom of the cover plate (51). A frustum-shaped baffle (53) is installed on the bottom inner wall of the opening. A plurality of gasket rings (54) are fixedly installed on the outer side of the frustum-shaped top cylinder (52). The gasket rings (54) cooperate with the frustum-shaped baffle (53).

3. A vacuum constant temperature forging device according to claim 1, characterized in that, Two positioning rods (56) are slidably connected to the push plate (9). The two positioning rods (56) are fixedly connected to the cover plate (51). And a top spring (55) is sleeved on the positioning rod (56). The top spring (55) is located between the cover plate (51) and the push plate (9). A stop block is fixedly installed at the top end of the positioning rod (56).

4. A vacuum constant temperature forging device according to claim 1, characterized in that, The isothermal heating mechanism (6) further includes a piston plate (63). The piston plate (63) is rotatably installed at one end of the corresponding top pipe (62). The piston plate (63) is slidably connected to the inner wall of the corresponding injection cylinder (61). Limiting rods (26) are fixedly installed on both the top inner wall and the bottom inner wall of the injection cylinder (61). The limiting rods (26) are slidably connected to the piston plate (63). The injection cylinder (61) is communicated with the annular injection and pressing box (2).

5. A vacuum constant temperature forging device according to claim 1, characterized in that, A top ring (66) is slidably connected to the inner wall of the annular injection press box (2). Two first cylinders (67) are fixedly installed at the top of the annular injection press box (2). The pistons of the two first cylinders (67) are fixedly connected to the top ring (66). The top ring (66) cooperates with a plurality of injection cylinders (61).

6. A vacuum constant temperature forging device according to claim 1, characterized in that, The cooling mechanism (7) further includes a plurality of return springs (73). The plurality of return springs (73) are fixedly installed at the top of the water injection cylinder (71), and the top ends of the return springs (73) are fixedly connected to the bottom end of the spray head (74). A screen (28) is installed on the inner wall of one end of the injection cylinder (61). The screen (28) cooperates with the corresponding spray head (74). An inlet (76) is installed on one side of the water injection cylinder (71), and a check valve is provided on the inlet (76).

7. A vacuum constant temperature forging device according to claim 1, characterized in that, One end of the injection cylinder (61) is fixedly installed with a positioning box (16). A rack (17) is slidably connected to the positioning box (16). One end of the injection cylinder (61) is rotatably connected to a driven gear (18). The driven gear (18) is slidably connected to the corresponding top pipe (62). The rack (17) meshes with the driven gear (18). Two second cylinders (15) are fixedly installed on the inner wall of the top of the vacuum chamber (1). The pistons of the two second cylinders (15) are fixedly installed with the same moving ring (14). The moving ring (14) is fixedly connected to a plurality of racks (17).

8. A vacuum constant temperature forging device according to claim 7, characterized in that, The driven gear (18) is provided with a moving hole. Two limiting blocks (19) are fixedly installed on the inner wall of the moving hole. The top pipe (62) is slidably connected to the inner wall of the moving hole. Limiting grooves (20) are provided at the top and bottom of the top pipe (62). The limiting grooves (20) are slidably connected to the corresponding limiting blocks (19).

9. A vacuum constant temperature forging device according to claim 1, characterized in that, One end of the top pipe (62) is fixedly installed with an adjusting plate (21). A guide hole (24) is provided on the adjusting plate (21). A connecting hole (23) is provided on the piston plate (63). The connecting hole (23) cooperates with the guide hole (24).

10. A vacuum constant temperature forging device according to claim 9, characterized in that, One side of the adjusting plate (21) is fixedly installed with a water blocking box (22). A through hole (25) is provided on the top pipe (62). The through hole (25) is located in the water blocking box (22), and the guide hole (24) is also located in the water blocking box (22). An exhaust hole (77) is provided at one end of the top pipe (62). The exhaust hole (77) penetrates through the heat insulation plate (64).

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