Forming die for forging air valve

Abstract

The invention belongs to the technical field of air valve forging, in particular to a forming die for air valve forging, and provides the following scheme that the forming die specifically comprises a die support, a die holder of a rectangular barrel-shaped structure is installed at the top of the die support, a supporting frame of an L-shaped structure is installed on the side face of the die support, and a stamping oil cylinder is installed at the top of the supporting frame; and a mounting frame of a box structure is fixedly mounted at the bottom of the mold base, a collecting groove is formed in the mounting frame, and a discharging pipe is mounted on the side face of the collecting groove. When a formed blank is taken down, in the process that the lower movable mold assembly moves downwards, the forging and pressing cavity communicates with the collecting groove, the purging assembly is started to clean powder on the surfaces of the lower mold supporting plate, the lower movable mold assembly, the core mold assembly and the two side movable mold assemblies, the interior of the forming cavity of the mold is rapidly cleaned, and surface defects, caused by residual powder, of the formed blank are avoided; and therefore, the machining speed and the yield of the air valve body forming blank are improved.

Description

Technical Field

[0001] The invention relates to the technical field of gas valve forging, in particular to a forming die for gas valve forging. Background Art

[0002] Powder forging usually refers to a forming process in which a preformed blank 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 with precision forging, and has the advantages of both. It can produce powder forgings with a density close to the theoretical density of the material, overcoming the disadvantage of low density of ordinary powder metallurgy parts. Some physical and mechanical properties of powder forgings reach or even exceed the level of ordinary forgings, while maintaining the advantages of ordinary powder metallurgy processes with little or no chips.

[0003] The air valve is a component used to control the flow of gas in the compressor. It is also one of the most vulnerable components. Its quality directly affects the exhaust volume, power consumption and operating reliability of the compressor. The air valve body is processed by powder forging to keep the air passage in the air valve body formed in one step. When the air valve body is forged, it is necessary to apply huge pressure to form the forged part. The surface of the valve body blank will be squeezed and adhered to the die during extrusion. When taking out the blank, it is easy to cause edge collapse, which reduces the processing speed and yield rate of the workpiece.

[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 above-mentioned prior art. Summary of the invention

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

[0006] The present invention provides a forming die for forging a gas valve, comprising a die support, a die base with a rectangular cylindrical structure is installed on the top of the die support, and an L-shaped support frame is installed on the side of the die support, a stamping oil cylinder is installed on the top of the support frame, a mounting frame with a box structure is fixedly installed on the bottom of the die base, and a collecting trough is arranged inside the mounting frame, a discharge pipe is installed on the side of the collecting trough, a forging cavity is arranged on the top of the die base, and a lower die mechanism is installed inside the forging cavity, and a stamping die mechanism matched with the lower die mechanism is installed on the bottom of the stamping oil cylinder;

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

[0008] A heating component and a cooling component are installed at both ends of the mold support, and both the heating component and the cooling component are connected to the bottom end of the core mold component. Purge components are installed on both sides of the mold support, and both the purge components are connected to the inside of the forging cavity.

[0009] Preferably in the present invention, the lower movable 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 the present invention, the side movable mold assembly includes a movable block 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 slidably matched with the die mechanism is provided above one end of the movable block.

[0011] Preferably in the present invention, the lower movable mold assembly also includes a bearing seat installed inside the mold bracket, and a bidirectional threaded screw is rotatably installed inside the bearing seat, the other ends of the two movable blocks are connected with push-pull rods, and the two ends of the push-pull rods are threadedly matched with the ends of the bidirectional threaded screws through ball nuts, and a driving motor for driving the bidirectional threaded screw to rotate is also installed inside the mold bracket.

[0012] Preferably in the present invention, the core mold assembly includes a core mold rod body, and a mold ring inserted into the lower movable mold assembly is arranged in the middle of the core mold rod body, a spiral heat exchange channel is arranged inside the core mold rod body, and a liquid inlet three-way solenoid valve and a liquid outlet three-way solenoid valve connecting the inlet and outlet of the heat exchange channel are arranged at the bottom of the core mold rod body.

[0013] Preferably in the present invention, the die mechanism comprises a die seat of a frame-shaped structure, and a punch installed at the bottom of the die seat, and an upper forming die groove is provided at the bottom of the punch, and a through groove is provided in the middle of the punch for sliding cooperation with the top of the core die rod body.

[0014] Preferably in the present invention, the heating component includes a heat medium storage tank, a heat medium circulation pump, a heater, a heat medium outlet pipe, a heat medium flow limiting valve and a heat medium return pipe for constructing a heat medium circulation movement, and the middle part of the heat medium outlet pipe is connected to the liquid inlet three-way solenoid valve through a three-way pipe, and the middle part of the heat medium return pipe is connected to the liquid outlet three-way solenoid valve through a three-way pipe.

[0015] Preferably in the present invention, the cooling component includes a cold medium storage tank, a cold medium circulation pump, a cooler, a cold medium outlet pipe, a cold medium flow limiting valve and a cold medium return pipe for constructing a cold medium circulation movement, and the middle part of the cold medium outlet pipe is connected to the liquid inlet three-way solenoid valve through a three-way pipe, and the middle part of the cold medium return pipe is connected to the liquid outlet three-way solenoid valve through a three-way pipe.

[0016] Preferably in the present invention, the purge assembly includes an air pump installed inside the mold bracket, and a purge chamber penetrating the outer wall of the forging chamber, and a movable guard plate is hinged on the inner side of the purge chamber, and a box body connected to the air pump is installed on the outer side of the purge 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 the present invention, the lower mold mechanism is composed of a lower mold support plate, a lower movable mold assembly, a core mold assembly and two side movable mold assemblies, wherein the core mold assembly cooperates with the two side movable mold assemblies to form a valve body forming mold, and the core mold assembly is inserted into the formed blank after punching and forging, and when the valve body is forged, a heating assembly for heating and a cooling assembly for cooling are installed at the bottom of the core mold assembly. After the lower mold mechanism is assembled, the core mold assembly is connected to the heating assembly to heat up, and the core mold assembly expands due to heat and quickly fills the gap between the lower mold support plate and the lower movable mold assembly, and the powder raw material is put into the lower mold mechanism, and the punching die mechanism descends and punches to forge the formed blank of the valve body. After the punching die mechanism is separated from the lower mold mechanism, the core mold The assembly is connected to the cooling assembly for cooling. At the same time, the two side movable mold assemblies move toward the two ends of the mold base. The core mold assembly shrinks when it is cold and forms a gap with the inner wall of the molded blank, and is separated from the molded blank, effectively avoiding the phenomenon of corner collapse caused by extrusion and adhesion of the inner and outer walls of the molded blank when the lower movable mold assembly pushes the molded blank out of the forging cavity. When the molded blank is removed, the forging cavity is connected to the collecting tank during the downward movement of the lower movable mold assembly, and the purge assembly starts to clean the surface powder of the lower mold support plate, the lower movable mold assembly, the core mold assembly and the two side movable mold assemblies, so as to quickly clean the inside of the molding cavity of the mold to avoid surface defects of the molded blank caused by residual powder, thereby improving the processing speed and yield rate of the valve body molded blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a forming die for forging a gas valve proposed by the present invention;

[0020] Figure 2 A schematic diagram of the side view of a forming die for forging a gas valve proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the collecting tank structure of a forming die for forging a gas valve proposed by the present invention;

[0022] Figure 4 This is a schematic diagram of the distribution structure of the side movable die assembly of a forming die for forging a gas valve proposed by the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of a side movable die assembly of a forming die for forging a gas valve proposed by the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of a purge assembly of a forming die for forging a gas valve proposed by the present invention;

[0025] Figure 7 A schematic diagram of the distribution structure of the lower movable die assembly of a gas valve forging forming die proposed by the present invention;

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

[0027] Fig. 9 A schematic diagram of the die structure of a forming die for forging a gas valve proposed by the present invention;

[0028] Fig.10 This is a schematic diagram of the cooling assembly structure of a forming die for forging a gas valve proposed by the present invention;

[0029] Fig.11 This is a schematic diagram of the structure of a heating component of a forming die for forging a gas valve proposed by the present invention.

[0030] In the figure: 1 mold support, 2 side movable 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 die mechanism, 31 die seat, 32 punch, 33 through groove, 34 upper forming die groove, 4 stamping cylinder, 5 support frame, 6 forging cavity, 7 die seat, 8 discharge pipe, 9 core mold assembly, 91 core mold rod body, 92 mold ring, 93 heat exchange flow channel, 94 liquid inlet three-way solenoid valve, 95 liquid outlet three-way solenoid valve, 10 purge assembly, 101 air pump, 102 purge cavity, 10 3 box body, 104 movable guard plate, 11 mounting frame, 12 cooling assembly, 121 cold medium storage tank, 122 cold medium circulation pump, 123 cooler, 124 cold medium flow limiting valve, 125 cold medium outlet pipe, 126 cold medium return pipe, 13 lower movable mold assembly, 131 movable sleeve, 132 flange forming mold, 133 lifting cylinder, 14 collecting 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 limiting valve, 165 hot medium outlet pipe, 166 hot medium return pipe. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] Reference Figure 1-11A forming die for forging a gas valve comprises a die support 1, a die base 7 of a rectangular cylindrical structure is installed on the top of the die support 1, and a support frame 5 of an L-shaped structure is installed on the side of the die support 1, a stamping oil cylinder 4 is installed on the top of the support frame 5, a mounting frame 11 of a box structure is fixedly installed on the bottom of the die base 7, and a collecting tank 14 is arranged inside the mounting frame 11, and a discharge pipe 8 is installed on the side of the collecting tank 14, a forging cavity 6 is arranged on the top of the die base 7, and a lower die mechanism is installed inside the forging cavity 6, and a die mechanism 3 adapted to the lower die mechanism is installed at the bottom of the stamping oil cylinder 4;

[0033] The lower mold mechanism is composed of a lower mold support plate 15, a lower movable mold assembly 13, a core mold assembly 9 and two side movable mold assemblies 2. The core mold assembly 9 is inserted into the interior of the lower movable mold assembly 13, and the surface of the lower mold support plate 15 is provided with a mold groove that matches the lower movable mold assembly 13. The two side movable mold assemblies 2 are slidably installed at the two end positions of the mold base 7. The lower movable mold assembly 13 and the core mold assembly 9 are fixedly installed on the mounting frame 11.

[0034] A heating component 16 and a cooling component 12 are respectively installed at both ends of the mold support 1, and the heating component 16 and the cooling component 12 are connected to the bottom end of the core mold component 9. A purge component 10 is installed on both sides of the mold support 1, and the purge component 10 is connected to the inside of the forging cavity 6.

[0035] In the present invention, the lower mold mechanism is composed of a lower mold support plate 15, a lower movable mold assembly 13, a core mold assembly 9 and two side movable mold assemblies 2, wherein the core mold assembly 9 cooperates with the two side movable mold assemblies 2 to form a valve body forming die, and the core mold assembly 9 is inserted into the formed blank after punching and forging, and when the valve body is forged, 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 connected to the heating assembly 16 for heating, and the core mold assembly 9 expands due to heat and quickly fills the gap between the lower mold support plate 15 and the lower movable mold assembly 13, and the powder raw material is put into the lower mold mechanism, and the punching die mechanism 3 is lowered to punch and forge the formed blank of the valve body. After the punching die mechanism 3 is separated from the lower mold mechanism, the core mold assembly 9 is The mold assembly 9 is connected to the cooling assembly 12 for cooling. At the same time, the two side movable mold assemblies 2 move toward the two ends of the mold base 7. The core mold assembly 9 shrinks when it is cold and forms a gap with the inner wall of the molded blank, separating from the molded blank, effectively avoiding the phenomenon of corner collapse caused by extrusion and adhesion of the inner and outer walls of the molded blank when the lower movable mold assembly 13 pushes the molded blank out of the forging cavity 6. When the molded blank is removed, the forging cavity 6 is connected to the collecting tank 14 during the downward movement of the lower movable mold assembly 13, and the purge assembly 10 starts to clean the surface powder of the lower mold support plate 15, the lower movable mold assembly 13, the core mold assembly 9 and the two side movable mold assemblies 2, so as to quickly clean the inside of the molding cavity of the mold to avoid surface defects of the molded blank caused by residual powder, thereby improving the processing speed and yield rate of the valve body molded blank.

[0036] As a further solution in the present invention, the lower movable 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 movable mold assembly 13 cooperates with the lower mold support plate 15 and the core mold assembly 9 to form the flange portion of the air valve body, and the flange forming mold 132 of the lower movable mold assembly 13 is tightly sleeved on the outside of the core mold assembly 9. After the formed blank is forged, the lifting cylinder 133 drives the movable sleeve 131 to move upward, and relies on the flange forming mold 132 to push the formed blank out of the forging cavity 6.

[0037] As a further solution in the present invention, the side movable mold assembly 2 includes a movable block 21 slidably connected to the mold base 7, and a valve body molding groove 23 is arranged below one end of the movable block 21, and a guide groove 22 slidably matched with the die mechanism 3 is arranged above one end of the movable block 21. In the present invention, when the two side movable mold assemblies 2 are closed together, the valve body molding groove 23 is covered on the outer side of the core mold assembly 9, and the die mechanism 3 punches downward from the guide groove 22, and the metal powder is extruded and formed between the valve body molding groove 23 and the core mold assembly 9. When the forging of the molded blank is completed, the two side movable mold assemblies 2 move outward synchronously to separate from the molded blank to avoid damage to the surface of the molded blank.

[0038] As a further solution in the present invention, the lower movable 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 connected with push-pull rods 26, and the two ends of the push-pull rods 26 are threadedly matched with the ends of the bidirectional threaded screws 25 through ball nuts. A driving motor 27 for driving the bidirectional threaded screw 25 to rotate is also installed inside the mold support 1. In the present invention, the two movable blocks 21 achieve synchronous movement inside the mold base 7 through the cooperation between the push-pull rods 26, the bidirectional threaded screws 25 and the driving motor 27.

[0039] As a further solution in the present invention, the core mold assembly 9 includes a core mold rod body 91, and a mold ring 92 inserted into the lower movable mold assembly 13 is provided in the middle of the core mold rod body 91, and a spiral heat exchange channel 93 is provided inside the core mold rod body 91, and a three-way solenoid valve 94 and a three-way solenoid valve 95 for liquid inlet and outlet connecting the inlet and outlet of the heat exchange channel 93 are provided at the bottom of the core mold rod body 91. In the present invention, when the core mold assembly 9 is combined with the lower movable 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 quickly heat the core mold assembly 9. During heating, the core mold assembly 9 expands due to the heat to fill the gap between it and the lower movable mold assembly 13. When demolding is required, the liquid inlet three-way solenoid valve 94 and the liquid outlet three-way solenoid valve 95 convert the heat exchange channel 93 to connect with the cooling assembly 12. The cold medium enters the heat exchange channel 93 to quickly cool down the core mold assembly 9. The core mold assembly 9 shrinks when it is cold to expand the gap between it and the lower movable mold assembly 13, and the core mold assembly 9 is completely separated from the inner wall of the molded blank when it shrinks. Compared with the demolding method of friction movement, it effectively avoids damage to the surface of the molded blank, thereby further improving the yield of the molded blank.

[0040] As a further solution in the present invention, the die mechanism 3 includes a die seat 31 of a frame-shaped structure, and a punch 32 installed at the bottom of the die seat 31, and an upper forming die groove 34 is provided at the bottom of the punch 32, and a through groove 33 is provided in the middle of the punch 32 for sliding cooperation with the top of the core die rod body 91. In the present invention, when the die mechanism 3 is forged downward, the punch 32 moves on the outside of the core die rod body 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 solution in the present invention, the heating component 16 includes a heat medium storage tank 161, 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 for constructing a heat medium circulation movement, and 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 the heat medium in the heating component 16, the high temperature of the heat medium is maintained by the heater 163. 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 solution in the present invention, the cooling component 12 includes a cold medium storage tank 121, 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 for constructing a cold medium circulation movement, and 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 circulates in the cooling component 12 through the cooler 123 to maintain a low-temperature circulation flow. 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, and quickly cools the core mold assembly 9 from the inside out.

[0043] As a further solution in the present invention, the purge assembly 10 includes an air pump 101 installed inside the mold support 1, and a purge chamber 102 that penetrates the outer wall of the forging chamber 6, and a movable guard plate 104 is hinged on the inner side of the purge chamber 102, and a box body 103 connected to the air pump 101 is installed on the outer side of the purge chamber 102. In the present invention, when the molded blank is removed, the air pump 101 blows air into the purge chamber 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 chamber 6 to purge the internal environment of the forging chamber 6. The purging airflow is discharged from the gap between the lower mold support plate 15 and the lower movable mold assembly 13 to complete the cleaning operation inside the forging chamber 6.

[0044] When in use, the lower mold mechanism is composed of a lower mold support plate 15, a lower movable mold assembly 13, a core mold assembly 9 and two side movable mold assemblies 2, wherein the core mold assembly 9 cooperates with the two side movable mold assemblies 2 to form a valve body forming mold. After forging, the core mold assembly 9 is inserted into the molded blank. When the valve body is forged, 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 connected to the heating assembly 16 for heating. The core mold assembly 9 expands due to the heat and quickly fills the gap between the lower mold support plate 15 and the lower movable mold assembly 13. The powder raw material is put into the lower mold mechanism, and the punching die mechanism 3 descends to forge the valve body. After the blank, the punch mechanism 3 is separated from the lower mold mechanism, the core mold assembly 9 is connected to the cooling assembly 12 for cooling. At the same time, the two side movable mold assemblies 2 move toward the two ends of the mold base 7. The core mold assembly 9 shrinks when it is cold and forms a gap with the inner wall of the molded blank, and is separated from the molded blank, effectively avoiding the phenomenon of corner collapse caused by extrusion and adhesion of the inner and outer walls of the molded blank when the lower movable mold assembly 13 pushes the molded blank out of the forging cavity 6. When the molded blank is removed, the forging cavity 6 is connected to the collecting tank 14 during the downward movement of the lower movable mold assembly 13, and the purge assembly 10 starts to clean the surface powder of the lower mold support plate 15, the lower movable mold assembly 13, the core mold assembly 9 and the two side movable mold assemblies 2, so as to quickly clean the inside of the molding cavity of the mold.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A forming die for forging a gas valve, comprising a die support (1), a die base (7) of a rectangular cylindrical structure is installed on the top of the die support (1), and a support frame (5) of an L-shaped structure is installed on the side of the die support (1), and a stamping cylinder (4) is installed on the top of the support frame (5), characterized in that: A mounting frame (11) of a box structure is fixedly mounted on the bottom of the die base (7), and a collecting trough (14) is arranged inside the mounting frame (11), and a discharge pipe (8) is installed on the side of the collecting trough (14); a forging chamber (6) is arranged on the top of the die base (7), and a lower die mechanism is installed inside the forging chamber (6), and a punching die mechanism (3) adapted to the lower die mechanism is installed at the bottom of the punching oil cylinder (4); The lower mold mechanism is composed of a lower mold support plate (15), a lower movable mold assembly (13), a core mold assembly (9) and two side movable mold assemblies (2); the core mold assembly (9) is plugged into the interior of the lower movable mold assembly (13), and the surface of the lower mold support plate (15) is provided with a mold groove that matches the lower movable mold assembly (13); the two side movable mold assemblies (2) are slidably mounted at the two end positions of the mold base (7); the lower movable mold assembly (13) and the core mold assembly (9) are both fixedly mounted on the mounting frame (11); A heating component (16) and a cooling component (12) are respectively installed at both ends of the interior of the mold support (1), and the heating component (16) and the cooling component (12) are both connected to the bottom end of the core mold component (9). A purge component (10) is installed on both sides of the interior of the mold support (1), and the purge component (10) is connected to the interior of the forging chamber (6).

2. A forming die for forging a gas valve according to claim 1, characterized in that: The lower movable mold assembly (13) comprises 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).

3. A forming die for forging a gas valve according to claim 2, characterized in that: The side movable mold assembly (2) comprises a movable block (21) 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) slidably matched with the punching die mechanism (3) is provided above one end of the movable block (21).

4. A forming die for forging a gas valve according to claim 3, characterized in that: The lower movable 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), and the other ends of the two movable blocks (21) are plugged with push-pull rods (26), and the two ends of the push-pull rods (26) are threadedly matched with the ends of the bidirectional threaded screw (25) through ball nuts. A driving motor (27) for driving the bidirectional threaded screw (25) to rotate is also installed inside the mold support (1).

5. A forming die for forging a gas valve according to claim 4, characterized in that: The core mold assembly (9) comprises a core mold rod body (91), and a mold ring (92) inserted into the lower movable mold assembly (13) is arranged in the middle of the core mold rod body (91), a spiral heat exchange channel (93) is arranged inside the core mold rod body (91), and 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 arranged at the bottom of the core mold rod body (91).

6. A forming die for forging a gas valve according to claim 5, characterized in that: The die mechanism (3) comprises a die seat (31) of a frame-shaped structure, and a punch (32) mounted on the bottom of the die seat (31), wherein an upper forming die groove (34) is provided at the bottom of the punch (32), and a through groove (33) is provided in the middle of the punch (32) for slidingly cooperating with the top of the core die rod body (91).

7. A forming die for forging a gas valve according to claim 5, characterized in that: The heating component (16) comprises a heat medium storage tank (161) for constructing a heat medium circulation movement, 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), wherein the middle portion of the heat medium outlet pipe (165) is connected to a liquid inlet three-way electromagnetic valve (94) via a three-way pipe, and the middle portion of the heat medium return pipe (166) is connected to a liquid outlet three-way electromagnetic valve (95) via a three-way pipe.

8. The forming die for forging a gas valve according to claim 5, characterized in that: The cooling assembly (12) comprises a cold medium storage tank (121) for constructing a cold medium circulation movement, 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), wherein the middle portion of the cold medium outlet pipe (125) is connected to a liquid inlet three-way electromagnetic valve (94) via a three-way pipe, and the middle portion of the cold medium return pipe (126) is connected to a liquid outlet three-way electromagnetic valve (95) via a three-way pipe.

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

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