An anti-oxidation closed operation platform for magnesium alloy die casting production

Abstract

The application discloses a kind of magnesium alloy pressure casting production with anti-oxidation closed operation platform, belongs to pressure casting auxiliary equipment technical field.The application, when the temperature and pressure in closed area rise when the main body of pressing mould suddenly oxidizes, pressure can be extruded to closed valve by exhaust pipe in protective cover, closed valve can be lifted up and separated from plugging seat, so that pressure gas enters into explosion-proof cover, and pressure can contact with inner wall flame-retardant structure after entering explosion-proof cover to relieve the pressure, while moving closed valve, valve rod can drive plugging block to move upward to open the gap of top guide pipe, at this time, the pressure that is buffered can enter guide cover and be discharged outward along the gap that is opened, by the setting of explosion-proof mechanism, avoid the influence on production safety due to the pressure that cannot be removed because of anti-oxidation closed.

Description

Technical Field

[0001] This invention belongs to the technical field of die-casting auxiliary equipment, and particularly relates to an anti-oxidation sealed operating platform for the production of magnesium alloy die-casting parts. Background Technology

[0002] Magnesium alloys are widely used in the automotive, electronics, and aerospace industries due to their high specific strength, good heat dissipation, and excellent shock absorption. In the production process of magnesium alloys, die casting is the most common forming method. Magnesium has extremely high chemical reactivity and is very prone to violent oxidation reactions with oxygen in the air when in a molten state at high temperatures, which can even cause fires or explosions. In current technologies, protective gases (such as SF6, CO2, or inert gases) are usually introduced into the pressing mold area to create an oxygen-free environment. In order to improve the utilization rate of protective gases and ensure the anti-oxidation effect, the production line is often equipped with a closed operating platform.

[0003] In actual production, when sudden oxidation or pressure fluctuations occur inside the mold of a closed operating platform, the tight sealing environment can cause a sudden surge in internal pressure. Without an effective pressure relief mechanism, this can easily lead to equipment damage or personal safety accidents. Die casting production involves frequent opening and closing of the mold and feeding and unloading. Fixed enclosures are difficult to keep in place for tight sealing during dynamic production, which can easily create dead zones for air leakage, leaving room for improvement. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-oxidation sealed operating platform for the production of magnesium alloy die castings, in order to solve the problem that a tight sealed environment can cause a sudden surge in internal pressure when sudden oxidation or pressure fluctuations occur inside the mold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An anti-oxidation sealed operating platform for producing magnesium alloy die-cast parts includes a sealing frame, which is disposed on top of the pressing mold body. The bottom of the inner cavity of the sealing frame has an opening for accommodating the entry of the pressing mold body. It also includes: A protective cover is fitted over the outside of the pressing mold body. The top of the protective cover is connected to a closed cover. Multiple conveying pipes are connected around the closed cover. The conveying pipes are connected to an external protective gas supply source through an air inlet pipe to form a closed operating area. A limiting mechanism is fitted outside the closed cover to restrict the close fit of the closed cover to the outside of the pressing mold body; A shielding mechanism is provided at the opening positions on both sides of the enclosure frame to further seal the internal area of ​​the enclosure frame; An explosion-proof mechanism is connected to the top of the enclosure frame. The explosion-proof mechanism includes an explosion-proof cover connected to the top of the enclosure frame. The bottom of the explosion-proof cover is connected to the top of the protective cover through an exhaust pipe. The explosion-proof mechanism guides the exhaust of pressure inside the protective cover.

[0006] As a further description of the above technical solution: The explosion-proof mechanism also includes: A sealing seat is connected to the bottom of the inner cavity of the explosion-proof cover. A sealing valve is slidably connected inside the sealing seat. Pressure pushes the sealing valve to separate from the sealing seat and open the pressure relief gap. A valve stem is connected to the top of the sealing valve. The valve stem passes through the top opening of the explosion-proof cover and is connected to a sealing block. A guide tube is connected to the top of the explosion-proof cover, and the sealing block is closed and connected inside the guide tube. A first spring is sleeved on the outside of the valve stem, with one end of the first spring connected to the outside of the valve stem and the other end of the first spring connected to one side of the inner cavity of the explosion-proof cover.

[0007] As a further description of the above technical solution: Both the inner cavity of the guide tube and the cross-sectional shape of the sealing block are conical. The movement of the sealing valve causes the sealing block to separate from the guide tube, opening another pressure relief gap. Both the sealing valve and the occlusion seat have a conical cross-sectional shape.

[0008] As a further description of the above technical solution: The explosion-proof mechanism also includes: A guide cover is connected to the top of the explosion-proof cover, and a waste discharge pipe is connected to one side of the guide cover. The guide cover is configured to rotate around the axis of the explosion-proof cover to adjust the pressure relief direction. A limiting bolt is rotatably connected to a protrusion on one side of the guide cover. The limiting bolt moves downward to contact the top of the explosion-proof cover to limit the depressurization direction of the guide cover.

[0009] As a further description of the above technical solution: The limiting mechanism includes: A limiting seat is fitted outside the protective cover. Multiple limiting blocks are arranged around the inner cavity of the limiting seat along the axis. The radial movement of the limiting blocks restricts the fit between the protective cover and the pressing mold body.

[0010] As a further description of the above technical solution: The limiting mechanism further includes: A telescopic rod includes a fixed part and a telescopic part, wherein the telescopic part is slidably connected to the fixed part, and one end of the telescopic part is connected to one side of a limiting block; An inner fixing ring is sleeved on the outside of multiple telescopic rods, and the inner fixing ring is connected to the bottom of the inner cavity of the closed frame; The second spring is sleeved on the outside of the telescopic part, and its two ends are respectively connected to one end of the telescopic part and one side of the fixed part.

[0011] As a further description of the above technical solution: The shielding mechanism includes: A shielding frame is connected to one side of the enclosure frame. Multiple flexible shielding covers are arranged in an array along the length of the inner cavity of the shielding frame, and the openings on one side of the shielding frame and the enclosure frame are closed by the flexible shielding covers.

[0012] As a further description of the above technical solution: The shielding mechanism also includes: An abutment wheel is rotatably connected to the bottom of the flexible shield, the bottom of which has a frame, and the abutment wheel is connected to the bottom of the frame.

[0013] As a further description of the above technical solution: The shielding mechanism also includes: The damping components are connected by a connecting plate between the top ends of the two damping components. The connecting plate is connected to the bottom of the inner cavity of the shielding frame, and the bottoms of the two damping components are connected to the top of the frame.

[0014] As a further description of the above technical solution: The explosion-proof cover includes: A heat insulation layer is attached to the inner wall of the explosion-proof cover; An energy-absorbing buffer layer is fixedly connected to the inner side of the heat insulation layer; The flame-retardant and explosion-suppressing layer is located on the inner side of the energy-absorbing buffer layer.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, through the designed explosion-proof mechanism, when the main body of the pressing mold suddenly oxidizes, causing the temperature and pressure in the closed area to rise, the pressure can be squeezed to the sealing valve through the exhaust pipe inside the protective cover. The sealing valve can be lifted upward and separated from the sealing seat, allowing the pressurized gas to enter the explosion-proof cover. After the pressure enters the explosion-proof cover, it can contact the flame-retardant structure of the inner wall to alleviate the ejection pressure. At the same time as the sealing valve moves, the valve stem can drive the sealing block to move upward and open the gap of the top guide tube. At this time, the buffered pressure can enter the guide cover through the opened gap and be discharged outward. Through the setting of the explosion-proof mechanism, the pressure cannot be discharged due to the anti-oxidation sealing, which affects production safety.

[0016] 2. In this invention, the explosion-proof mechanism and the guide cover that can rotate around the axis allow operators to flexibly adjust the orientation of the waste discharge pipe according to the workshop layout and staff positions, so as to avoid the pressure relief medium from being sprayed directly onto the precision instruments or channels.

[0017] 3. In this invention, the shielding mechanism adopts an array of flexible shielding covers and a damping contact structure, which automatically adapts to the shape changes of the infeed and outfeed parts, maintains a high-strength fit and seal, ensures the anti-oxidation effect, and reduces the consumption cost of protective gas. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an anti-oxidation sealed operating platform for the production of magnesium alloy die castings proposed in this invention. Figure 2 This is a schematic diagram showing the disassembled structure of an anti-oxidation sealed operating platform for the production of magnesium alloy die castings proposed in this invention. Figure 3 This is a schematic diagram showing the partial disassembly of the shielding mechanism of an anti-oxidation sealed operating platform for magnesium alloy die casting production proposed in this invention. Figure 4 This is a schematic diagram of the lateral disassembly structure of an anti-oxidation sealed operating platform for the production of magnesium alloy die castings proposed in this invention. Figure 5 This is a schematic diagram of the explosion-proof mechanism of an anti-oxidation sealed operating platform for the production of magnesium alloy die castings proposed in this invention. Figure 6 This is a schematic diagram showing the disassembled structure of an anti-oxidation sealed operating platform for the production of magnesium alloy die castings proposed in this invention.

[0019] Legend: 1. Enclosure frame; 2. Shielding mechanism; 201. Shielding frame; 202. Flexible shielding cover; 203. Connecting plate; 204. Damping component; 3. Explosion-proof mechanism; 301. Explosion-proof cover; 302. Guide pipe; 303. Valve stem; 304. Sealing block; 305. First spring; 306. Sealing valve; 307. Sealing seat; 308. Exhaust pipe; 309. Guide cover; 310. Waste discharge pipe; 311. Limiting bolt; 4. Enclosure cover; 5. Conveying pipe; 6. Air inlet pipe; 7. Limiting mechanism; 701. Limiting seat; 702. Inner retaining ring; 703. Telescopic rod; 704. Second spring; 705. Limiting block; 8. Pressing mold body; 9. Protective cover. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-6The present invention provides a technical solution: an anti-oxidation sealed operating platform for the production of magnesium alloy die castings, including a sealing frame 1, the sealing frame 1 being disposed on the top of the pressing mold body 8, and the bottom of the inner cavity of the sealing frame 1 having an opening for the pressing mold body 8 to enter; A protective cover 9 is fitted over the outside of the pressing mold body 8. The top of the protective cover 9 is connected to a closed cover 4. Multiple conveying pipes 5 are connected around the closed cover 4. The conveying pipes 5 are connected to an external protective gas supply source through an air inlet pipe 6 to form a closed operating area. The limiting mechanism 7 is sleeved on the outside of the closed cover 4, and the limiting mechanism 7 restricts the close fit of the closed cover 4 to the outside of the pressing mold body 8; The shielding mechanism 2 is located at the openings on both sides of the enclosure 1 to further seal the internal area of ​​the enclosure 1; An explosion-proof mechanism 3 is connected to the top of the enclosure frame 1. The explosion-proof mechanism 3 includes an explosion-proof cover 301 connected to the top of the enclosure frame 1. The bottom of the explosion-proof cover 301 is connected to the top of the protective cover 9 through an exhaust pipe 308. The explosion-proof mechanism 3 guides the pressure inside the protective cover 9 to exhaust. Please see Figure 5 The explosion-proof mechanism 3 further includes: The sealing seat 307 is connected to the bottom of the inner cavity of the explosion-proof cover 301. A sealing valve 306 is slidably connected inside the sealing seat 307. The sealing valve 306 is pushed apart from the sealing seat 307 by pressure to open the pressure relief gap. A valve stem 303 is connected to the top of the sealing valve 306. The valve stem 303 passes through the top opening of the explosion-proof cover 301 and is connected to a sealing block 304. A guide tube 302 is connected to the top of the explosion-proof cover 301, and the sealing block 304 is closedly connected inside the guide tube 302. The guide tube 302 has a conical cavity inside, which can maintain the sealing effect when the sealing block 303 is embedded in the guide tube 302; A first spring 305 is sleeved on the outside of the valve stem 303. One end of the first spring 305 is connected to the outside of the valve stem 303, and the other end of the first spring 305 is connected to one side of the inner cavity of the explosion-proof cover 301. Specifically: Through the designed explosion-proof mechanism 3, when the main body of the pressing mold 8 suddenly oxidizes, causing the temperature and pressure in the closed area to rise, when the pressure exceeds the sealing force of the sealing valve 306, the pressure can be squeezed into the sealing valve 306 through the exhaust pipe 308 within the protective cover 9. The sealing valve 306 can be lifted upward and separated from the sealing seat 307, allowing the pressurized gas to enter the explosion-proof cover 301. After entering the explosion-proof cover 301, the pressure can contact the flame-retardant structure of the inner wall to alleviate the ejection pressure. At the same time as the sealing valve 306 moves, the valve stem 303 can drive the sealing block 304 to move upward and open the gap of the top guide pipe 302. At this time, the buffered pressure can enter the guide cover 309 through the opened gap and be discharged outward. This is beneficial to the setting of the explosion-proof mechanism 3, which avoids the pressure from being unable to be discharged due to anti-oxidation sealing, thus affecting production safety.

[0022] The inner cavity of the guide tube 302 and the cross-sectional shape of the sealing block 304 are both conical. The movement of the sealing valve 306 causes the sealing block 304 to separate from the guide tube 302, opening another pressure relief gap. Both the sealing valve 306 and the occlusion seat 307 have a conical cross-sectional shape.

[0023] By designing the sealing valve 306 and the blocking block 304, the pressure relief medium can enter the explosion-proof cover 301 for buffering and guidance before being discharged outward, which helps to reduce the danger of pressure relief. The explosion-proof mechanism 3 also includes: A guide cover 309 is connected to the top of the explosion-proof cover 301. A waste discharge pipe 310 is connected to one side of the guide cover 309. The guide cover 309 is configured to rotate around the axis of the explosion-proof cover 301 to adjust the pressure relief direction. The limiting bolt 311 is rotatably connected to the protrusion on one side of the guide cover 309. The limiting bolt 311 moves downward to contact the top of the explosion-proof cover 301 to limit the pressure relief direction of the guide cover 309. Furthermore, the designed guide cover 309 allows the orientation of the waste discharge pipe 310 to one side to be adjusted by rotating the guide cover 309, which facilitates the adjustment of the pressure relief direction and improves the adaptability of the layout in the production workshop. Furthermore, the explosion-proof cover 301 includes: The heat insulation layer is attached to the inner wall of the explosion-proof cover 301. Its material is preferably aluminum silicate refractory fiber felt or aerogel heat insulation felt. When high-temperature depressurized gas enters the explosion-proof cover 301, the heat insulation layer can block the rapid transfer of heat to the outer metal shell of the explosion-proof cover 301, and prevent the outer surface temperature of the explosion-proof cover 301 from being too high and burning the operator or igniting the surrounding equipment.

[0024] An energy-absorbing buffer layer is fixedly connected to the inner side of the heat insulation layer. It is made of porous silicon carbide foam ceramic or high-strength metal honeycomb panel material. The porous structure can force the airflow to refract and diffusely reflect in order to relieve pressure and buffer.

[0025] The flame-retardant and explosion-suppressing layer is located on the innermost side of the energy-absorbing buffer layer and is in direct contact with the inner cavity of the explosion-proof cover 301. It is made of multiple layers of high-temperature resistant metal woven mesh, which are interlaced and stacked. The metal woven mesh can absorb the heat of the flame, so that the temperature of the flame passing through the mesh holes is reduced to extinguish the sparks and block the flame from being sprayed outward.

[0026] Please see Figure 6 The limiting mechanism 7 includes: The limiting seat 701 is sleeved on the outside of the protective cover 9. Multiple limiting blocks 705 are arranged around the inner periphery of the limiting seat 701 along the axis. The radial movement of the limiting blocks 705 restricts the fit between the protective cover 9 and the pressing mold body 8. The telescopic rod 703 includes a fixed part and a telescopic part, wherein the telescopic part is slidably connected to the fixed part, and one end of the telescopic part is connected to one side of the limiting block 705. An inner fixing ring 702 is sleeved on the outside of multiple telescopic rods 703, and the inner fixing ring is connected to the bottom of the inner cavity of the closed frame 1; The second spring 704 is sleeved on the outside of the telescopic part, and the two ends of the second spring 704 are respectively connected to one end of the telescopic part and one side of the fixed part. Specifically: Through the designed limiting mechanism 7, when the protective cover 9 is placed outside the pressing mold body 8, the second spring 704 can use its own elastic force to drive the telescopic rod 703 to extend and push the limiting block 705 to move radially. The radially moving limiting block 705 can maintain the compression limiting of the inner guide cover 309, thereby improving the fit stability of the protective cover 9 and avoiding gaps from affecting the pressing action of the pressing mold body 8.

[0027] Please see Figures 1-3 The shielding mechanism 2 includes: A shielding frame 201 is connected to one side of the enclosed frame 1. Multiple flexible shielding covers 202 are arranged in an array along the length direction inside the shielding frame 201. The flexible shielding covers 202 close the opening on one side of the shielding frame 201 and the enclosed frame 1. The shielding mechanism 2 also includes: An abutment wheel is rotatably connected to the bottom of the flexible shield 202. The bottom of the flexible shield 202 has a frame, and the abutment wheel is connected to the bottom of the frame. The shielding mechanism 2 also includes: Damping element 204, a connecting plate 203 is connected between the top ends of the two damping elements 204, the connecting plate 203 is connected to the bottom of the inner cavity of the shielding frame 201, and the bottom of the two damping elements 204 is connected to the top of the frame. Specifically: Through the designed shielding mechanism 2, when the pressing mold body 8 needs to adjust the pressing distance or feed material, it can make contact with the feeding and discharging parts through the abutting wheel. The contact of the abutting wheel can shorten and pull the flexible shielding cover 202 to shrink through the internal damping element. Thus, the shrinkage of the flexible shielding cover 202 can fully fit the top side of the discharging component or the unfolded part of the pressing mold body 8 to maintain full fit of the closed area, thereby maintaining the sealing effect. Furthermore, the array of multiple flexible shielding covers 202 can improve the shielding and sealing effect.

[0028] Working principle: During use, when abnormal oxidation in the sealed area causes a pressure surge that exceeds the critical pressure of the first spring 305, the pressure pushes the sealing valve 306 upward against the elastic force, causing it to separate from the sealing seat 307. High-pressure gas rushes into the explosion-proof cover 301, and the valve stem 303 simultaneously drives the sealing block 304 above to rise, opening the gap of the guide pipe 302. The gas is slowed and buffered by the flame-retardant structure inside the explosion-proof cover 301, and then enters the guide cover 309 through the guide pipe 302. The user can fix the direction in advance by rotating the guide cover 309 and using the limit bolt 311, so that the exhaust gas is finally discharged to a safe area through the exhaust pipe 310.

[0029] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] 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 closed operating platform for the production of magnesium alloy die castings, comprising a closed frame (1), the closed frame (1) being disposed on top of a pressing mold body (8), the bottom of the inner cavity of the closed frame (1) having an opening for accommodating the pressing mold body (8) to enter, characterized in that, Also includes: A protective cover (9) is fitted outside the main body (8) of the pressing mold. A closed cover (4) is connected to the top of the protective cover (9). Multiple conveying pipes (5) are connected to the periphery of the closed cover (4). The conveying pipes (5) are connected to an external protective gas supply source through an air inlet pipe (6) to form a closed operating area. The limiting mechanism (7) is sleeved on the outside of the closed cover (4) to restrict the close fit of the closed cover (4) to the outside of the pressing mold body (8); A shielding mechanism (2) is provided at the opening positions on both sides of the enclosure frame (1) to further seal the internal area of ​​the enclosure frame (1); An explosion-proof mechanism (3) is connected to the top of the enclosure (1). The explosion-proof mechanism (3) includes an explosion-proof cover (301) connected to the top of the enclosure (1). The bottom of the explosion-proof cover (301) is connected to the top of the protective cover (9) through an exhaust pipe (308). The explosion-proof mechanism (3) guides the pressure inside the protective cover (9) to exhaust.

2. The anti-oxidation sealed operating platform for magnesium alloy die casting production according to claim 1, characterized in that, The explosion-proof mechanism (3) also includes: The sealing seat (307) is connected to the bottom of the inner cavity of the explosion-proof cover (301). A sealing valve (306) is slidably connected inside the sealing seat (307). The sealing valve (306) is pushed apart from the sealing seat (307) by pressure to open the pressure relief gap. A valve stem (303) is connected to the top of the sealing valve (306). The valve stem (303) passes through the top opening of the explosion-proof cover (301) and is connected to a sealing block (304). A guide tube (302) is connected to the top of the explosion-proof cover (301). The sealing block (304) is closed and connected inside the guide tube (302). The first spring (305) is sleeved on the outside of the valve stem (303). One end of the first spring (305) is connected to the outside of the valve stem (303), and the other end of the first spring (305) is connected to one side of the inner cavity of the explosion-proof cover (301).

3. The anti-oxidation sealed operating platform for magnesium alloy die casting production according to claim 2, characterized in that, The inner cavity of the guide tube (302) and the cross-sectional shape of the sealing block (304) are both conical. The sealing block (304) is separated from the guide tube (302) by the movement of the sealing valve (306), which opens another pressure relief gap. The cross-sectional shape of the closure valve (306) and the occlusion seat (307) is conical.

4. The anti-oxidation sealed operating platform for magnesium alloy die casting production according to claim 1, characterized in that, The explosion-proof mechanism (3) also includes: A guide cover (309) is connected to the top of the explosion-proof cover (301), and a waste discharge pipe (310) is connected to one side of the guide cover (309). The guide cover (309) is configured to rotate around the axis of the explosion-proof cover (301) to adjust the pressure relief direction. The limiting bolt (311) is rotatably connected to the protrusion on one side of the guide cover (309). The limiting bolt (311) moves downward to contact the top of the explosion-proof cover (301) to limit the depressurization direction of the guide cover (309).

5. The anti-oxidation sealed operating platform for magnesium alloy die casting production according to claim 1, characterized in that, The limiting mechanism (7) includes: The limiting seat (701) is sleeved on the outside of the protective cover (9). Multiple limiting blocks (705) are arranged around the inner cavity of the limiting seat (701) along the axis. The radial movement of the limiting blocks (705) restricts the fit between the protective cover (9) and the pressing mold body (8).

6. The anti-oxidation sealed operating platform for magnesium alloy die casting production according to claim 5, characterized in that, The limiting mechanism (7) also includes: The telescopic rod (703) includes a fixed part and a telescopic part, wherein the telescopic part is slidably connected to the fixed part, and one end of the telescopic part is connected to one side of the limiting block (705); An inner fixing ring (702) is sleeved on the outside of multiple telescopic rods (703), and the inner fixing ring is connected to the bottom of the inner cavity of the closed frame (1); The second spring (704) is sleeved on the outside of the telescopic part, and the two ends of the second spring (704) are respectively connected to one end of the telescopic part and one side of the fixed part.

7. The anti-oxidation sealed operating platform for magnesium alloy die casting production according to claim 1, characterized in that, The shielding mechanism (2) includes: A shielding frame (201) is connected to one side of the enclosure frame (1). The inner cavity of the shielding frame (201) is arranged in a series of flexible shielding covers (202) along the length direction. The flexible shielding covers (202) close the opening on one side of the shielding frame (201) and the enclosure frame (1).

8. The anti-oxidation sealed operating platform for magnesium alloy die casting production according to claim 7, characterized in that, The shielding mechanism (2) further includes: An abutment wheel is rotatably connected to the bottom of the flexible shield (202), the bottom of the flexible shield (202) has a frame, and the abutment wheel is connected to the bottom of the frame.

9. The anti-oxidation sealed operating platform for magnesium alloy die casting production according to claim 8, characterized in that, The shielding mechanism (2) further includes: A damping element (204) is provided, and a connecting plate (203) is connected between the top ends of the two damping elements (204). The connecting plate (203) is connected to the bottom of the inner cavity of the shielding frame (201), and the bottom of the two damping elements (204) is connected to the top of the frame.

10. The anti-oxidation sealed operating platform for magnesium alloy die casting production according to claim 1, characterized in that, The explosion-proof cover (301) includes: A heat insulation layer is attached to the inner wall of the explosion-proof cover (301); An energy-absorbing buffer layer is fixedly connected to the inner side of the heat insulation layer; The flame-retardant and explosion-suppressing layer is located on the inner side of the energy-absorbing buffer layer.

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