A forming die for forging a gas valve

Abstract

This invention belongs to the field of gas valve forging technology, specifically a forming die for gas valve forging. The proposed solution includes a die support, a rectangular cylindrical die base mounted on the top of the die support, and an L-shaped support frame mounted on the side of the die support. A stamping cylinder is mounted on the top of the support frame, and a box-shaped mounting frame is fixedly mounted on the bottom of the die base. The mounting frame has a collection groove inside, and a discharge pipe is mounted on the side of the collection groove. In this invention, when the formed blank is removed, during the downward movement of the lower moving die assembly, the forging chamber communicates with the collection groove. The purging assembly is activated to clean the powder from the surfaces of the lower die support plate, the lower moving die assembly, the core die assembly, and the two side moving die assemblies. This rapid cleaning of the forming cavity of the die prevents residual powder from causing surface defects in the formed blank, thereby improving the processing speed and yield of the gas valve body formed blank.

Description

Technical Field

[0001] This invention relates to the field of gas valve forging technology, and in particular to a forming die for gas valve forging. Background Technology

[0002] Powder forging typically refers to a forming process in which a preform of sintered powder is heated and then forged into a part in a closed die. It is a new process that combines traditional powder metallurgy and precision forging, incorporating the advantages of both. It can produce powder forgings with densities close to the theoretical density of the material, overcoming the low density of ordinary powder metallurgy parts. It enables certain physical and mechanical properties of powder forgings to reach or even exceed those of ordinary forgings, while retaining the advantages of low-chip and chip-free processes inherent in conventional powder metallurgy.

[0003] The valve is a component in a compressor used to control gas flow. It is also one of the most easily damaged parts. Its quality directly affects the compressor's discharge capacity, power consumption, and operational reliability. The valve body is manufactured using powder forging, ensuring that the airflow channels within the valve body are formed in one piece. However, during the forging process, enormous pressure is applied to shape the forged part. The surface of the valve body blank may adhere to the die due to mutual pressure during extrusion. This can easily cause edge collapse when the blank is removed, reducing the processing speed and yield rate.

[0004] In view of this, the present invention provides a forming die for forging a gas valve to solve the technical problems existing in the prior art. Summary of the Invention

[0005] Based on the technical problems existing in the background art, the present invention proposes a forming die for forging a gas valve.

[0006] The present invention proposes a forming mold for forging a gas valve, comprising a mold support, a rectangular cylindrical mold base mounted on the top of the mold support, an L-shaped support frame mounted on the side of the mold support, a stamping cylinder mounted on the top of the support frame, a box-shaped mounting frame fixedly mounted on the bottom of the mold base, a collection groove provided inside the mounting frame, a discharge pipe mounted on the side of the collection groove, a forging chamber provided on the top of the mold base, a lower mold mechanism mounted inside the forging chamber, and a stamping die mechanism adapted to the lower mold mechanism mounted on the bottom of the stamping cylinder;

[0007] The lower mold mechanism consists of a lower mold support plate, a lower moving mold assembly, a core mold assembly, and two side moving mold assemblies. The core mold assembly is inserted into the interior of the lower moving mold assembly, and the surface of the lower mold support plate is provided with a mold groove that mates with the lower moving mold assembly. The two side moving mold assemblies are slidably installed at both ends of the mold base. The lower moving mold assembly and the core mold assembly are both fixedly installed on the mounting frame.

[0008] Heating and cooling components are installed at both ends of the mold support, and both the heating and cooling components are connected to the bottom of the core mold assembly. Blowing components are installed on both sides of the mold support, and both blowing components are connected to the inside of the forging chamber.

[0009] Preferably, in this invention, the lower moving mold assembly includes a lifting cylinder installed at the bottom of the mounting frame, and a movable sleeve slidably installed between the lower mold support plate and the core mold assembly. The bottom of the movable sleeve is fixedly connected to the lifting cylinder, and the top of the movable sleeve is provided with a flange forming mold that cooperates with the lower mold support plate.

[0010] Preferably, in this invention, the side moving mold assembly includes a movable block that is slidably connected to the mold base, and a valve body forming groove is provided below one end of the movable block, and a guide groove that slidably cooperates with the punching mechanism is provided above one end of the movable block.

[0011] Preferably, in this invention, the lower moving mold assembly further includes a bearing seat installed inside the mold support, and a bidirectional threaded screw is rotatably installed inside the bearing seat. The other ends of the two moving blocks are each connected to a push-pull rod, and the two ends of the push-pull rod are screwed to the ends of the bidirectional threaded screw through ball nuts. The mold support is also equipped with a drive motor that drives the bidirectional threaded screw to rotate.

[0012] Preferably, in this invention, the core mold assembly includes a core mold rod, and a mold ring inserted into the lower moving mold assembly is provided in the middle of the core mold rod. A spiral heat exchange channel is provided inside the core mold rod, and an inlet three-way solenoid valve and an outlet three-way solenoid valve connected to the inlet and outlet of the heat exchange channel are provided at the bottom of the core mold rod.

[0013] Preferably, in this invention, the punching mechanism includes a frame-shaped punching base and a punch installed at the bottom of the punching base, wherein the bottom of the punch is provided with an upper forming groove and the middle of the punch is provided with a through groove that slides with the top of the core die rod.

[0014] Preferably, in this invention, the heating assembly includes a heat medium storage tank for circulating heat medium, a heat medium circulation pump, a heater, a heat medium outlet pipe, a heat medium flow limiting valve, and a heat medium return pipe. The middle part of the heat medium outlet pipe is connected to the liquid inlet three-way solenoid valve via a three-way pipe, and the middle part of the heat medium return pipe is connected to the liquid outlet three-way solenoid valve via a three-way pipe.

[0015] Preferably, in this invention, the cooling assembly includes a cold medium storage tank for circulating the cold medium, a cold medium circulation pump, a cooler, a cold medium outlet pipe, a cold medium flow limiting valve, and a cold medium return pipe. The middle part of the cold medium outlet pipe is connected to the liquid inlet three-way solenoid valve via a three-way pipe, and the middle part of the cold medium return pipe is connected to the liquid outlet three-way solenoid valve via a three-way pipe.

[0016] Preferably, in this invention, the purging assembly includes an air pump installed inside the mold support and a purging chamber penetrating the outer wall of the forging chamber, wherein a movable guard plate is hinged to the inner side of the purging chamber and a box connected to the air pump is installed on the outer side of the purging chamber.

[0017] Compared with the prior art, the present invention provides a forming die for forging a gas valve, which has the following beneficial effects:

[0018] In this invention, the lower die mechanism consists of a lower die support plate, a lower moving die assembly, a core die assembly, and two side moving die assemblies. The core die assembly, in conjunction with the two side moving die assemblies, forms the valve body forming die. After forging, the core die assembly is inserted into the forming blank. During valve body forging, a heating assembly for heating and a cooling assembly for cooling are installed at the bottom of the core die assembly. After the lower die mechanism is assembled, the core die assembly is connected to the heating assembly for heating. The heated core die assembly rapidly expands to fill the gap between the lower die support plate and the lower moving die assembly, allowing powdered raw materials to be fed into the lower die mechanism. The punching mechanism descends to forge the valve body into a forming blank. After the punching mechanism separates from the lower die mechanism, the core die... The components are connected to the cooling components for cooling. At the same time, the two side moving mold components move towards both ends of the mold base. The core mold component shrinks when cooled, forming a gap between itself and the inner wall of the formed blank, thus separating from the formed blank. This effectively avoids the phenomenon of corner collapse caused by the extrusion and adhesion of the inner and outer walls of the formed blank when the lower moving mold component pushes the formed blank out of the forging chamber. When the formed blank is removed, during the downward movement of the lower moving mold component, the forging chamber is connected to the collection groove. The blowing component is activated to clean the powder on the surface of the lower mold support plate, the lower moving mold component, the core mold component, and the two side moving mold components. This quickly cleans the inside of the mold forming cavity, preventing residual powder from causing surface defects in the formed blank, thereby improving the processing speed and yield of the valve body formed blank. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a forming die for forging a gas valve according to the present invention;

[0020] Figure 2 This is a side view of a forming die for forging a gas valve according to the present invention.

[0021] Figure 3 This is a schematic diagram of the collection groove structure of a forming mold for forging a gas valve proposed in this invention;

[0022] Figure 4 This is a schematic diagram of the side moving mold assembly distribution structure of a forming die for forging a gas valve according to the present invention;

[0023] Figure 5 This is a schematic diagram of the side moving mold assembly structure of a forming die for forging a gas valve according to the present invention;

[0024] Figure 6 This is a schematic diagram of the purging assembly structure of a forming die for forging a gas valve according to the present invention;

[0025] Figure 7 This is a schematic diagram of the distribution structure of the lower moving die assembly of a forming die for forging a gas valve according to the present invention.

[0026] Figure 8 This is a schematic diagram of the lower die support plate structure of a forming die for forging a gas valve proposed in this invention;

[0027] Figure 9 This is a schematic diagram of the punching mechanism of a forming die for a gas valve forging according to the present invention;

[0028] Figure 10 This is a schematic diagram of the cooling component structure of a forming die for forging a gas valve according to the present invention.

[0029] Figure 11 This is a schematic diagram of the heating component structure of a forming mold for forging a gas valve according to the present invention.

[0030] In the diagram: 1. Mold support; 2. Side moving mold assembly; 21. Movable block; 22. Guide groove; 23. Valve body forming groove; 24. Bearing seat; 25. Bidirectional threaded screw; 26. Push-pull rod; 27. Drive motor; 3. Punch mechanism; 31. Punch base; 32. Punch; 33. Through slot; 34. Upper forming mold groove; 4. Punch cylinder; 5. Support frame; 6. Forging chamber; 7. Mold base; 8. Discharge pipe; 9. Core mold assembly; 91. Core mold rod body; 92. Mold ring; 93. Heat exchange channel; 94. Inlet three-way solenoid valve; 95. Outlet three-way solenoid valve; 10. Purge assembly; 101. Air pump; 102. Purge chamber; 10. 3. Box body, 104. Movable protective plate, 11. Mounting bracket, 12. Cooling assembly, 121. Cold medium storage tank, 122. Cold medium circulation pump, 123. Cooler, 124. Cold medium flow restrictor valve, 125. Cold medium outlet pipe, 126. Cold medium return pipe, 13. Lower moving mold assembly, 131. Movable sleeve, 132. Flange forming mold, 133. Lifting cylinder, 14. Collection tank, 15. Lower mold support plate, 16. Heating assembly, 161. Hot medium storage tank, 162. Hot medium circulation pump, 163. Heater, 164. Hot medium flow restrictor valve, 165. Hot medium outlet pipe, 166. Hot medium return pipe. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] Reference Figure 1-11A forming die for forging a gas valve includes a die support 1, a die base 7 with a rectangular cylindrical structure installed on the top of the die support 1, an L-shaped support frame 5 with a support frame 5 with a support frame 5 with a stamping cylinder 4 with a support frame 5 with a support frame 5 with a support frame 5 with a support frame 5 with a support frame 5 with a support frame 5 with a support frame 5 with a support frame 5 with a support frame 6 with a support frame 7 ...

[0033] The lower mold mechanism consists of a lower mold support plate 15, a lower moving mold assembly 13, a core mold assembly 9, and two side moving mold assemblies 2. The core mold assembly 9 is inserted into the lower moving mold assembly 13, and the surface of the lower mold support plate 15 is provided with a mold groove that mates with the lower moving mold assembly 13. The two side moving mold assemblies 2 are slidably installed at both ends of the mold base 7. The lower moving mold assembly 13 and the core mold assembly 9 are both fixedly installed on the mounting bracket 11.

[0034] Heating component 16 and cooling component 12 are installed at both ends of the interior of the mold support 1, and both heating component 16 and cooling component 12 are connected to the bottom end of the core mold component 9. Blowing component 10 is installed on both sides of the interior of the mold support 1, and both blowing component 10 are connected to the interior of the forging chamber 6.

[0035] In this invention, the lower mold mechanism consists of a lower mold support plate 15, a lower moving mold assembly 13, a core mold assembly 9, and two side moving mold assemblies 2. The core mold assembly 9, together with the two side moving mold assemblies 2, forms the valve body forming mold. After forging, the core mold assembly 9 is inserted into the forming blank. During valve body forging, a heating assembly 16 for heating and a cooling assembly 12 for cooling are installed at the bottom of the core mold assembly 9. After the lower mold mechanism is assembled, the core mold assembly 9 is heated by the heating assembly 16. The heated core mold assembly 9 rapidly expands to fill the gap between the lower mold support plate 15 and the lower moving mold assembly 13, allowing powdered raw materials to be fed into the lower mold mechanism. The punching mechanism 3 descends to forge the valve body into a forming blank. After the punching mechanism 3 separates from the lower mold mechanism, the core... The mold assembly 9 is connected to the cooling assembly 12 for cooling. At the same time, the two side moving mold assemblies 2 move towards both ends of the mold base 7. The core mold assembly 9 shrinks when cooled, thus forming a gap between itself and the inner wall of the forming blank, separating it from the forming blank. This effectively avoids the phenomenon of corner collapse caused by the extrusion and adhesion of the inner and outer walls of the forming blank when the lower moving mold assembly 13 pushes the forming blank out of the forging chamber 6. When the forming blank is removed, during the downward movement of the lower moving mold assembly 13, the forging chamber 6 is connected to the collection groove 14. The blowing assembly 10 is activated to clean the powder on the surface of the lower mold support plate 15, the lower moving mold assembly 13, the core mold assembly 9, and the two side moving mold assemblies 2. This quickly cleans the inside of the forming cavity of the mold, avoiding residual powder from causing surface defects in the forming blank, thereby improving the processing speed and yield of the valve body forming blank.

[0036] As a further embodiment of the present invention, the lower moving mold assembly 13 includes a lifting cylinder 133 installed at the bottom of the mounting frame 11 and a movable sleeve 131 slidably installed between the lower mold support plate 15 and the core mold assembly 9. The bottom of the movable sleeve 131 is fixedly connected to the lifting cylinder 133, and the top of the movable sleeve 131 is provided with a flange forming mold 132 that cooperates with the lower mold support plate 15. In the present invention, the lower moving mold assembly 13 cooperates with the lower mold support plate 15 and the core mold assembly 9 to form the flange part of the valve body, and the flange forming mold 132 of the lower moving mold assembly 13 is tightly fitted on the outside of the core mold assembly 9. When the forming blank is forged, the lifting cylinder 133 drives the movable sleeve 131 to move upward, and the forming blank is pushed out of the forging chamber 6 by the flange forming mold 132.

[0037] As a further embodiment of the present invention, the side moving mold assembly 2 includes a movable block 21 that is slidably connected to the mold base 7. A valve body forming groove 23 is provided below one end of the movable block 21, and a guide groove 22 that is slidably engaged with the punching mechanism 3 is provided above one end of the movable block 21. In the present invention, when the two side moving mold assemblies 2 are closed together, the valve body forming groove 23 covers the outer side of the core mold assembly 9. The punching mechanism 3 punches downward from the guide groove 22, and the metal powder is extruded and formed between the valve body forming groove 23 and the core mold assembly 9. After the formed blank is forged, the two side moving mold assemblies 2 move outward synchronously and separate from the formed blank to avoid damage to the surface of the formed blank.

[0038] As a further embodiment of the present invention, the lower moving mold assembly 13 also includes a bearing seat 24 installed inside the mold support 1, and a bidirectional threaded screw 25 is rotatably installed inside the bearing seat 24. The other ends of the two movable blocks 21 are each connected to a push-pull rod 26, and the two ends of the push-pull rod 26 are screwed to the ends of the bidirectional threaded screw 25 through ball nuts. The mold support 1 is also equipped with a drive motor 27 that drives the bidirectional threaded screw 25 to rotate. In the present invention, the two movable blocks 21 achieve synchronous movement inside the mold base 7 through the cooperation between the push-pull rod 26, the bidirectional threaded screw 25 and the drive motor 27.

[0039] As a further embodiment of the present invention, the core mold assembly 9 includes a core mold rod 91, and a mold ring 92 inserted into the lower moving mold assembly 13 is provided in the middle of the core mold rod 91. A spiral heat exchange channel 93 is provided inside the core mold rod 91, and an inlet three-way solenoid valve 94 and an outlet three-way solenoid valve 95 are provided at the bottom of the core mold rod 91 to connect the inlet and outlet of the heat exchange channel 93. In the present invention, when the core mold assembly 9 is combined with the lower moving mold assembly 13, the heat exchange channel 93 is connected to the heating assembly 16, and the heat medium enters the heat exchange channel 93 to rapidly heat the core mold assembly 9. Heating causes the core mold assembly 9 to expand and fill the gap between it and the lower moving mold assembly 13. When demolding is required, the inlet three-way solenoid valve 94 and the outlet three-way solenoid valve 95 connect the heat exchange channel 93 to the cooling assembly 12. The cold medium enters the heat exchange channel 93 to quickly cool the core mold assembly 9. The core mold assembly 9 contracts when cooled, widening the gap between it and the lower moving mold assembly 13. When the core mold assembly 9 contracts, it completely separates from the inner wall of the molded blank. Compared with the demolding method of frictional motion, this effectively avoids damage to the surface of the molded blank and further improves the yield of the molded blank.

[0040] As a further embodiment of the present invention, the die mechanism 3 includes a die base 31 with a frame-shaped structure and a punch 32 installed at the bottom of the die base 31. The bottom of the punch 32 is provided with an upper forming groove 34, and the middle part of the punch 32 is provided with a through groove 33 that slides with the top of the core die rod 91. In the present invention, when the die mechanism 3 forges downward, the punch 32 moves on the outside of the core die rod 91, providing an effective guiding effect for the forging action between the die mechanism 3 and the lower die mechanism, effectively avoiding the deviation phenomenon during the forging of the formed blank, and further improving the forging efficiency of the formed blank.

[0041] As a further embodiment of the present invention, the heating assembly 16 includes a heat medium storage tank 161 for circulating heat medium, a heat medium circulation pump 162, a heater 163, a heat medium outlet pipe 165, a heat medium flow limiting valve 164, and a heat medium return pipe 166. The middle part of the heat medium outlet pipe 165 is connected to the liquid inlet three-way solenoid valve 94 through a three-way pipe, and the middle part of the heat medium return pipe 166 is connected to the liquid outlet three-way solenoid valve 95 through a three-way pipe. In the present invention, during the circulation of heat medium in the heating assembly 16, the heater 163 maintains the high temperature of the heat medium. When the core mold assembly 9 needs to be heated, the heat medium enters the core mold assembly 9 through the liquid inlet three-way solenoid valve 94 to quickly heat the core mold assembly 9.

[0042] As a further embodiment of the present invention, the cooling assembly 12 includes a cold medium storage tank 121 for circulating cold medium, a cold medium circulation pump 122, a cooler 123, a cold medium outlet pipe 125, a cold medium flow limiting valve 124, and a cold medium return pipe 126. The middle part of the cold medium outlet pipe 125 is connected to the liquid inlet three-way solenoid valve 94 through a three-way pipe, and the middle part of the cold medium return pipe 126 is connected to the liquid outlet three-way solenoid valve 95 through a three-way pipe. In the present invention, the cold medium circulating in the cooling assembly 12 is cooled by the cooler 123 to maintain low-temperature circulation. When the core mold assembly 9 needs to be cooled, the cold medium enters the core mold assembly 9 through the liquid inlet three-way solenoid valve 94 to quickly cool the core mold assembly 9 from the inside out.

[0043] As a further embodiment of the present invention, the purging assembly 10 includes an air pump 101 installed inside the mold support 1 and a purging cavity 102 penetrating the outer wall of the forging cavity 6. A movable guard plate 104 is hinged to the inner side of the purging cavity 102, and a box body 103 connected to the air pump 101 is installed on the outer side of the purging cavity 102. In the present invention, when the formed blank is removed, the air pump 101 blows air into the purging cavity 102. At this time, the lower end of the movable guard plate 104 is blown open to form a blowing airflow toward the inside of the forging cavity 6, purging the internal environment of the forging cavity 6. The purging airflow is discharged from the gap between the lower mold support plate 15 and the lower moving mold assembly 13, completing the cleaning operation inside the forging cavity 6.

[0044] In use, the lower die mechanism consists of a lower die support plate 15, a lower moving die assembly 13, a core die assembly 9, and two side moving die assemblies 2. The core die assembly 9 and the two side moving die assemblies 2 cooperate to form the valve body forming die. After forging, the core die assembly 9 is inserted into the forming blank. During the forging of the valve body, a heating assembly 16 for heating and a cooling assembly 12 for cooling are installed at the bottom of the core die assembly 9. After the lower die mechanism is assembled, the core die assembly 9 is heated by the heating assembly 16. The core die assembly 9 expands rapidly due to heat to fill the gap between the lower die support plate 15 and the lower moving die assembly 13. The powder raw material is then fed into the lower die mechanism, and the punching die mechanism 3 descends to forge the valve body. After the blank and the punching mechanism 3 separate from the lower die mechanism, the core die assembly 9 is connected to the cooling assembly 12 for cooling. At the same time, the two side moving die assemblies 2 move towards both ends of the die base 7. The core die assembly 9 shrinks when cooled, thus forming a gap between itself and the inner wall of the formed blank, and separating from the formed blank. This effectively avoids the phenomenon of corner collapse caused by the extrusion and adhesion of the inner and outer walls of the formed blank when the lower moving die assembly 13 pushes the formed blank out of the forging cavity 6. When the formed blank is removed, during the downward movement of the lower moving die assembly 13, the forging cavity 6 is connected to the collection groove 14, and the blowing assembly 10 is activated to clean the powder on the surface of the lower die support plate 15, the lower moving die assembly 13, the core die assembly 9 and the two side moving die assemblies 2, and quickly clean the inside of the forming cavity of the die.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A forming die for forging a gas valve, comprising a die support (1), wherein a rectangular cylindrical die base (7) is mounted on the top of the die support (1), and an L-shaped support frame (5) is mounted on the side of the die support (1), wherein a stamping cylinder (4) is mounted on the top of the support frame (5), characterized in that, The bottom of the mold base (7) is fixedly installed with a box structure mounting bracket (11), and the inside of the mounting bracket (11) is provided with a collection groove (14). The side of the collection groove (14) is provided with a discharge pipe (8). The top of the mold base (7) is provided with a forging chamber (6), and the inside of the forging chamber (6) is provided with a lower mold mechanism. The bottom of the stamping cylinder (4) is provided with a stamping mechanism (3) that is compatible with the lower mold mechanism. The lower mold mechanism consists of a lower mold support plate (15), a lower moving mold assembly (13), a core mold assembly (9), and two side moving mold assemblies (2). The core mold assembly (9) is inserted into the interior of the lower moving mold assembly (13), and the surface of the lower mold support plate (15) is provided with a mold groove that cooperates with the lower moving mold assembly (13). The two side moving mold assemblies (2) are slidably installed at both ends of the mold base (7). The lower moving mold assembly (13) and the core mold assembly (9) are both fixedly installed on the mounting frame (11). Heating components (16) and cooling components (12) are installed at both ends of the mold support (1), and both heating components (16) and cooling components (12) are connected to the bottom end of the core mold assembly (9). Blowing components (10) are installed on both sides of the mold support (1), and both blowing components (10) are connected to the inside of the forging chamber (6). The lower moving mold assembly (13) includes a lifting cylinder (133) installed at the bottom of the mounting frame (11) and a movable sleeve (131) slidably installed between the lower mold support plate (15) and the core mold assembly (9). The bottom of the movable sleeve (131) is fixedly connected to the lifting cylinder (133), and the top of the movable sleeve (131) is provided with a flange forming mold (132) that cooperates with the lower mold support plate (15). The side moving mold assembly (2) includes a movable block (21) slidably connected to the mold base (7), and a valve body forming groove (23) is provided below one end of the movable block (21), and a guide groove (22) that slidably cooperates with the punching mechanism (3) is provided above one end of the movable block (21). The lower moving mold assembly (13) also includes a bearing seat (24) installed inside the mold support (1), and a bidirectional threaded screw (25) is rotatably installed inside the bearing seat (24). The other ends of the two moving blocks (21) are each connected to a push-pull rod (26), and the two ends of the push-pull rod (26) are screwed to the ends of the bidirectional threaded screw (25) through ball nuts. The mold support (1) also has a drive motor (27) installed inside to drive the bidirectional threaded screw (25) to rotate. The core mold assembly (9) includes a core mold rod (91), and a mold ring (92) inserted into the lower moving mold assembly (13) is provided in the middle of the core mold rod (91). A spiral heat exchange channel (93) is provided inside the core mold rod (91). A liquid inlet three-way solenoid valve (94) and a liquid outlet three-way solenoid valve (95) connecting the inlet and outlet of the heat exchange channel (93) are provided at the bottom of the core mold rod (91).

2. The forming die for forging a gas valve according to claim 1, characterized in that, The punching mechanism (3) includes a frame-shaped punching base (31) and a punch (32) installed at the bottom of the punching base (31). The bottom of the punch (32) is provided with an upper forming groove (34), and the middle part of the punch (32) is provided with a through groove (33) that slides with the top of the core mold rod (91).

3. The forming die for forging a gas valve according to claim 1, characterized in that, The heating assembly (16) includes a heat medium storage tank (161) that enables the circulation of heat medium, a heat medium circulation pump (162), a heater (163), a heat medium outlet pipe (165), a heat medium flow limiting valve (164), and a heat medium return pipe (166). The middle part of the heat medium outlet pipe (165) is connected to the liquid inlet three-way solenoid valve (94) through a three-way pipe, and the middle part of the heat medium return pipe (166) is connected to the liquid outlet three-way solenoid valve (95) through a three-way pipe.

4. The forming die for forging a gas valve according to claim 1, characterized in that, The cooling assembly (12) includes a cold medium storage tank (121) for circulating cold medium, a cold medium circulation pump (122), a cooler (123), a cold medium outlet pipe (125), a cold medium flow limiting valve (124), and a cold medium return pipe (126). The middle part of the cold medium outlet pipe (125) is connected to the liquid inlet three-way solenoid valve (94) through a three-way pipe, and the middle part of the cold medium return pipe (126) is connected to the liquid outlet three-way solenoid valve (95) through a three-way pipe.

5. A forming die for forging a gas valve according to claim 1, characterized in that, The purging assembly (10) includes an air pump (101) installed inside the mold support (1) and a purging chamber (102) penetrating the outer wall of the forging chamber (6). A movable guard plate (104) is hinged to the inner side of the purging chamber (102), and a box (103) connected to the air pump (101) is installed on the outer side of the purging chamber (102).

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