Special surface treatment device for recoverable magnesium alloy casting

Abstract

The invention relates to the technical field of metal recovery processing, and discloses a special surface treatment device for recoverable magnesium alloy castings, which comprises a sand blasting cabin with an inlet opened and closed through a first cabin door on one side and an outlet opened and closed through a second cabin door on the other side; the sand blasting mechanism is arranged in the sand blasting cabin and is used for blasting sand to the casting; the clamping mechanism is arranged in the sand blasting cabin, is positioned below the sand blasting mechanism, and is used for clamping the casting and driving the casting to rotate; the gas transmission piece is arranged in the sand blasting cabin and is used for inputting inert gas into the sand blasting cabin; inert gas is introduced into the conveying cabin, and the conveying cabin is communicated with the sand blasting cabin through an outlet; the first conveying mechanism is arranged in the conveying cabin and used for conveying the castings to the next working procedure; and the second conveying mechanism is driven by the transverse driving part to move in the conveying cabin, and can enter the sand blasting cabin through the outlet when the outlet is opened. The treatment effect on the surface of the magnesium alloy casting can be improved.

Description

Technical Field

[0001] This application relates to the technical field of metal recycling and processing, and in particular to a special surface treatment device for recyclable magnesium alloy castings. Background Technology

[0002] Magnesium alloys are increasingly used in aerospace, automotive, and 3C product industries due to their low density and high specific strength. However, magnesium is chemically reactive and easily oxidizes in air, forming a magnesium oxide layer. When recycling magnesium alloy castings, this oxide layer needs to be removed, affecting the purity of the recycled magnesium alloy castings.

[0003] Currently, sandblasting equipment is used to sandblast the surface of magnesium alloys to remove the oxide layer. However, during or after surface treatment, magnesium alloys are usually exposed to air, and the fresh surface of magnesium alloys is prone to secondary oxidation in the air, resulting in poor treatment effect. Summary of the Invention

[0004] To improve the surface treatment effect of magnesium alloy castings, this application provides a special surface treatment device for recyclable magnesium alloy castings.

[0005] This application provides a surface treatment device for recyclable magnesium alloy castings, which adopts the following technical solution: A surface treatment device for recyclable magnesium alloy castings, comprising: The sandblasting chamber has an entrance on one side that can be opened and closed through a first door, and an exit on the other side that can be opened and closed through a second door. The sandblasting mechanism, located in the sandblasting chamber, is used to sandblast the castings; The clamping mechanism, located in the sandblasting chamber and below the sandblasting mechanism, is used to clamp the casting and drive the casting to rotate. The gas supply unit, located in the sandblasting chamber, is used to introduce inert gas into the sandblasting chamber; The delivery chamber is filled with inert gas and connected to the sandblasting chamber through its outlet. The first conveying mechanism, located in the conveying chamber, is used to convey the casting to the next process; and The second conveying mechanism is driven to move in the conveying chamber by a lateral drive component. When the outlet is opened, it can enter the sandblasting chamber through the outlet to receive the castings and convey them to the first conveying mechanism.

[0006] By adopting the above technical solution, inert gas is introduced into both the sandblasting chamber and the conveying chamber to create an inert environment, effectively preventing secondary oxidation of magnesium alloy castings due to excessive contact with air during the sandblasting process and subsequent conveying. The sandblasting mechanism and the clamping mechanism work together to clean the oxide layer on the surface of the castings. The second conveying mechanism can move into the sandblasting chamber to receive the castings, realizing automated transfer, reducing manual intervention, and improving processing efficiency and safety. The overall structure has good sealing properties, making it suitable for magnesium alloy recycling scenarios and improving the purity of the recovered castings.

[0007] Optionally, the clamping mechanism includes Supporting framework; and The clamping assembly has two sets, and the clamping directions of the two sets of clamping assemblies are perpendicular to each other; each set of clamping assemblies includes two opposing clamps, which are rotatably connected to the support frame by rotational power, and the rotation axes of the clamps in the same set coincide.

[0008] By adopting the above technical solution, the two sets of clamping components are arranged perpendicularly to each other, enabling automatic changing of the clamping position of the casting during the sandblasting process. Switching the clamping point after the first round of sandblasting avoids leaving uncleaned areas and improves the comprehensiveness of the surface treatment. The support frame cooperates with the rotating fixture, allowing the casting to rotate during sandblasting, further enhancing the uniformity of sandblasting.

[0009] Optional, each fixture includes Telescopic power component, rotatably connected to the support frame; The base is located at the telescopic end of the telescopic power component; The butt joint has one end that moves in the base along the telescopic direction of the telescopic power component, and the other end that extends out of the base; A first elastic element, connected between the base and the abutment, provides an elastic force for the abutment to move outward from the base; and When the abutment moves a set distance into the base against the elastic force of the first elastic element, the sensor is detected and controls the telescopic power element to stop telescopicing.

[0010] By adopting the above technical solution, the clamp uses an elastic contact and sensor control structure, which can adapt to castings of different sizes and shapes, avoiding excessively tight or loose clamping. The sensor controls the telescopic power component to stop when the contact joint is pressed to the set position, realizing intelligent clamping, protecting the surface of the casting from damage, and improving clamping accuracy and safety.

[0011] Optionally, the clamping mechanism is driven to move within the sandblasting chamber via a vertical drive component.

[0012] By adopting the above technical solution, the clamping mechanism can move vertically, facilitating height adjustment according to casting size and sandblasting position to adapt to castings of different specifications. Simultaneously, vertical movement also allows for position adjustment of the casting before and after clamping, facilitating coordinated operation with the platform, conveying mechanism, etc., thus improving the flexibility and automation of the device.

[0013] Optionally, the surface treatment apparatus also includes a platform, which is located in the sandblasting chamber and is used to support the casting when the clamping mechanism holds the casting.

[0014] Optional, the sandblasting mechanism includes Mounting plate; and Spray guns, multiple of which are hinged to a mounting plate; The air supply component corresponds to the spray gun, and a linkage component is provided between the air supply component and the spray gun so that the spray gun swings back and forth when the air supply component delivers air intermittently.

[0015] By adopting the above technical solution, the oscillating design of the spray gun, combined with the linkage of the air supply component, enables a wider and more uniform sandblasting range. The intermittent air output from the air supply component drives the spray gun to oscillate back and forth, eliminating the need for an additional drive device. The structure is simple and reliable, achieving both inert gas protection and enhanced sandblasting effect, making it suitable for efficient cleaning of magnesium alloy surfaces.

[0016] Optional, the linkage components include The movable base moves vertically on the mounting plate for the installation of gas delivery components; The second elastic element, connected between the movable base and the mounting plate, provides an upward elastic force to the movable base; and The linkage is located between the movable base and the spray gun, so that the spray gun rotates when the movable base moves vertically. The gas supply component has an air bladder disposed between the mounting plate and the movable seat. When the gas supply component is not discharging gas, the air bladder stores gas and gradually inflates to push the movable seat upward. When the gas supply component discharging gas, the air bladder deflates, causing the second elastic element to drive the linkage element to move upward.

[0017] By adopting the above technical solution, the linkage component uses the inflation and deflation of the airbag to drive the moving seat to move up and down, and then drives the spray gun to swing through the linkage component.

[0018] Optional, the linkage includes A rack, mounted on a movable base, extends vertically; and The gear is fixed coaxially with the rotating shaft of the spray gun and meshes with the rack.

[0019] Optionally, a telescopic cover capable of vertical extension and retraction is provided between the mounting plate and the movable base, the telescopic cover enclosing the airbag to guide the extension of the airbag.

[0020] By adopting the above technical solution, the telescopic cover can guide and protect the airbag during its expansion and contraction, preventing the airbag from shifting or twisting and extending its service life.

[0021] Optionally, the air supply component also includes an air inlet pipe, a solenoid valve, and an air outlet. The air inlet pipe, air bag, solenoid valve, and air outlet are connected in sequence, and the solenoid valve controls the opening and closing of the air outlet.

[0022] By adopting the above technical solution, the gas delivery component controls the opening and closing of the gas outlet head through a solenoid valve, achieving intermittent gas delivery with precise control and fast response.

[0023] In summary, this application includes at least one of the following beneficial effects: 1. By using inert gas protection in the sandblasting chamber and the conveying chamber, secondary oxidation of magnesium alloy castings is prevented during surface treatment and transportation, thereby improving the purity of the recycled parts; 2. The movable clamping mechanism and swingable spray gun structure enable multi-angle and all-round sandblasting cleaning of castings, thereby improving the surface treatment quality. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram of the sandblasting chamber in an embodiment of this application; Figure 3 This is a schematic diagram of the clamping mechanism in the embodiments of this application; Figure 4 This is a cross-sectional view of the fixture in the embodiments of this application; Figure 5 This is a top perspective view of the sandblasting mechanism and the clamping mechanism in the embodiments of this application; Figure 6 This is a schematic diagram of the sandblasting mechanism in the embodiments of this application; Figure 7 This is a schematic diagram of the structure of the spray gun and the air supply component in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of the telescopic cover and the air supply component after the telescopic cover has been cut apart in this embodiment of the application; Figure 9 yes Figure 1 A magnified structural diagram of point A in the middle.

[0025] Explanation of reference numerals in the attached drawings: 1. Sandblasting chamber; 2. First door; 3. Inlet; 4. Second door; 5. Outlet; 6. Support frame; 7. Clamping assembly; 71. Clamp; 711. Telescopic power component; 712. Base; 713. Abutment joint; 714. First elastic component; 715. Sensor; 72. Rotational power; 8. Mounting plate; 9. Spray gun; 10. Air supply component; 101. Air inlet pipe; 102. Airbag; 103. Solenoid valve; 104. Air outlet. 11. Head; 12. Conveying chamber; 13. First conveying mechanism; 14. Second conveying mechanism; 15. Horizontal drive component; 16. Vertical drive component; 17. Placement platform; 18. Linkage assembly; 19. Moving seat; 10. Second elastic component; 11. Linkage component; 12. Rack; 13. Gear; 14. Telescopic cover; 15. First enclosure; 16. Second enclosure; 17. Operating chamber; 18. Movable end; 19. Abutting end; 20. Stop bar. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 To be continued Figure 9 This application will be described in further detail.

[0027] This application discloses a surface treatment device specifically for recyclable magnesium alloy castings. (Refer to...) Figure 1 The surface treatment device for recyclable magnesium alloy castings includes a sandblasting chamber 1, a sandblasting mechanism, a clamping mechanism, a gas supply component 10, a conveying chamber 11, a first conveying mechanism 12, and a second conveying mechanism 13. The sandblasting mechanism, clamping mechanism, and gas supply component 10 are installed in the sandblasting chamber 1. The clamping mechanism clamps the magnesium alloy casting, while the sandblasting mechanism, located above the clamping mechanism, sandblasts the casting. The gas supply component 10 introduces inert gas to blow on the casting, thus performing surface treatment. The first conveying mechanism 12 and the second conveying mechanism 13 are installed in the conveying chamber 11, which is also filled with inert gas. After the surface treatment is completed, the second conveying mechanism 13 moves into the sandblasting chamber 1 to receive the casting and transfers it to the first conveying mechanism 12, which then transports it to the next process.

[0028] By introducing inert gas into the sandblasting chamber and the conveying chamber 11, an inert environment is created, making it less likely for the magnesium alloy casting to re-oxidize during sandblasting and during its transfer to the next process. The inert gas can be argon, nitrogen, etc.

[0029] Reference Figure 1 and Figure 2The sandblasting chamber 1 has a square structure, with an inlet 3 and an outlet 5 on opposite sides. A first door 2, hinged to the inlet 3, is used to open and close the inlet 3. When the inlet 3 is closed, the first door 2 can be secured to the sandblasting chamber 1 with bolts or a lock. A second door 4, movable at the outlet 5, is used to open and close the outlet 5. The second door 4 has two mirror-symmetrical panels that slide vertically along the outer periphery of the sandblasting chamber 1. The second door 4 can be driven by a motor screw with a transmission, an electric push rod, or a cylinder; in this embodiment, a cylinder is preferred. Furthermore, a dust extraction pipe (not shown in the figure) is connected to the sandblasting chamber 1 to collect waste and sand.

[0030] Reference Figure 2 and Figure 3 Since existing sandblasting devices typically use a single set of clamping components, the portion clamped by the clamping components is difficult to clean during the sandblasting of magnesium alloy castings. Operators need to readjust the clamping position, which is inconvenient. Therefore, in this embodiment, the clamping mechanism includes a support frame 6 and two sets of clamping components 7. Both sets of clamping components 7 are mounted on the support frame 6, and their clamping directions are perpendicular to each other. One set of clamping components 7 first clamps the casting. After one round of sandblasting, the other set of clamping components 7 clamps the casting, and the clamping component 7 that initially clamped the casting is released. Then, another round of sandblasting is performed, thus achieving automatic changing of the casting clamping position within the sandblasting chamber 1.

[0031] Specifically, the support frame 6 encloses an operating cavity 19 with a square cross-section. The operating cavity 19 extends through the upper and lower sides of the support frame 6 and is opposite to the center of the cross-section of the sandblasting chamber 1. Each set of clamping components 7 includes two opposing clamps 71. The two clamps 71 can extend and retract along the same straight line to clamp the casting together. The clamps 71 are rotatably connected to the support frame 6 driven by the rotational power 72, and the rotation axes of the clamps 71 in the same set coincide.

[0032] Reference Figure 3 and Figure 4 Each clamp 71 includes a telescopic power component 711, a base 712, an abutment joint 713, a first elastic component 714, and a sensor 715. The telescopic power component 711 is an electric push rod or a cylinder. The base of the telescopic power component 711 is rotatably connected to the support frame 6. The rotational power 72 is installed on the support frame 6 and is a structure of a motor and a transmission component. The motor is installed on the support frame 6, and the transmission component simultaneously engages with the motor output end and the base of the telescopic power component 711, enabling the motor to drive the telescopic power component to rotate. The transmission component can be a gear 1732 transmission structure or a sprocket and chain transmission structure. The transmission component structure is existing technology and will not be described in detail here, nor is it shown in detail in the figure.

[0033] The telescopic power member 711 extends into the operating cavity 19 and retracts towards or away from the center of the operating cavity 19. The base 712 is fixed to the telescopic end of the telescopic power member 711 and is used to install the abutment 713 and the first elastic member 714. One end of the abutment 713 is a movable end 20, and the other end is an abutment end 21. The movable end 20 moves within the base 712 along the telescopic direction of the telescopic power member 711, while the abutment end 21 is located outside the base 712, and its longitudinal cross-sectional dimension is larger than that of the base 712. The first elastic member 714 is a spring located within the base 712 and connects the inner wall of the base 712 to the abutment end 21. The elastic force of the first elastic member 714 gives the abutment 713 a tendency to move outward from the base 712, creating a gap between the abutment end 21 and the base 712 in its natural state. Sensor 715 is mounted on base 712. When the abutment 713 moves against the elastic force of the first elastic member 714 to abut the abutment end 21 against the end of base 712, sensor 715 is sensed and controls the telescopic force to stop telescopic movement. Sensor 715 can be a proximity switch, infrared sensor, contact sensor, etc., mounted on the inner wall of base 712.

[0034] When the two clamps 71 in the same group clamp the casting, the telescopic ends of the telescopic power members 711 of the two clamps 71 drive the abutment 713 to approach the casting. When the abutment 713 of the clamps 71 abuts the casting, and the two clamps 71 jointly apply pressure to the casting, causing the abutment 713 to resist the elastic force of the first elastic member 714 until the sensor 715 receives the sensing, the clamping assembly 7 completes the clamping of the casting. When the clamping assembly 7 is clamping the casting, the rotational power 72 corresponding to the clamps 71 drives the two clamps 71 in the same group to rotate synchronously, so that the sandblasting mechanism above the clamps 71 can perform sandblasting treatment on various parts of the casting.

[0035] Reference Figure 1 In addition, a platform 16 is installed near the bottom of the sandblasting chamber 1, which is used to place the casting to be sandblasted. The clamping mechanism is driven vertically within the sandblasting chamber 1 by a vertical drive component 15, which can be a motor-driven screw and nut transmission mechanism or a chain transmission mechanism, etc. The vertical drive component 15 cooperates with the support frame 6, enabling the clamping mechanism to move vertically. When surface treatment of the casting is required, the operator first places the casting on the platform 16. Then, the vertical drive component 15 moves the support frame 6 to the platform 16, which then enters the operating chamber 19. The clamping assembly 7 then clamps the casting on the platform 16. The support frame 6 then moves upwards to approach the sandblasting mechanism, which performs sandblasting on the casting. Furthermore, by adjusting the position of the support frame 6, the distance between the casting and the sandblasting mechanism can be adjusted.

[0036] Reference Figure 1 , Figure 5 and Figure 6The sandblasting mechanism includes a mounting plate 8 and multiple spray guns 9. The mounting plate 8 is fixed in the sandblasting chamber 1 and is located near the top of the sandblasting chamber 1. The multiple spray guns 9 are spaced apart on the mounting plate 8 with their nozzles facing downwards. The spray guns 9 are arranged in a cross shape, and their positions correspond to the clamping directions of the two sets of clamping assemblies 7. The multiple spray guns 9 are connected to the same hopper via a distribution pipe. The distribution pipe has multiple branch pipes corresponding to the number of spray guns 9, and each branch pipe is equipped with a flow control valve. The method of distributing material from the hopper to the spray guns 9 is existing technology and will not be described in detail here, nor is it shown in the figure.

[0037] Furthermore, the activation of multiple spray guns 9 can be controlled based on the extension distance of the telescopic power component 711 in the fixture 71. A displacement sensor is installed at the telescopic power component 711 of the fixture 71, and the displacement sensor is connected to the controller of the flow control valve. When the extension distance of the telescopic power component 711 is small, it indicates that the casting size is large. Based on the signal feedback from the displacement sensor, the controller closes the flow control valves on some branch pipes, reducing the number of activated spray guns 9. When the extension distance of the telescopic power component 711 is large, it indicates that the casting size is small. The controller opens the flow control valves on more branch pipes, increasing the number of activated spray guns 9, thereby achieving reasonable allocation of spray gun 9 resources according to the size of the casting.

[0038] Reference Figure 6 and Figure 7 Furthermore, the spray gun 9 is hinged to the mounting plate 8, which has clearance holes corresponding to the spray guns 9 to allow for their movement. Each air supply component 10 corresponds to one of the spray guns 9, and a linkage assembly 17 is provided between the air supply component 10 and the spray gun 9, causing the spray gun 9 to reciprocate as the air supply component 10 intermittently supplies air. Multiple air supply components 10 are connected to the same inert gas source through a gas collecting pipe. The gas collecting pipe has branch pipes corresponding to the number of air supply components 10, and each branch pipe is equipped with a control valve. The flow control valve of the spray gun 9 and the corresponding control valve of the air supply component 10 are electrically connected to achieve linkage control. The method of distributing the flow rate through the gas collecting pipe is existing technology and will not be described in detail here or shown in the figure.

[0039] When the flow control valve corresponding to a certain spray gun 9 is opened, the control valve of the corresponding air supply component 10 will also be opened, thus enabling the air supply component 10 to be activated. When the flow control valve is closed and the spray gun 9 stops working, the control valve of the corresponding air supply component 10 will also be closed, stopping the delivery of inert gas, so that the corresponding air supply component 10 is activated only when the spray gun 9 is activated.

[0040] The linkage assembly 17 includes a movable base 171, a second elastic element 172, and a linkage element 173. The movable base 171 moves vertically on the mounting plate 8 for the installation of the air supply component 10. The second elastic element 172 is a spring connected between the movable base 171 and the mounting plate 8, and the elastic force of the second elastic element 172 gives the movable base 171 an upward tendency to move. The linkage element 173 includes a rack 1731 and a gear 1732. The rack 1731 is disposed on the movable base 171 and extends vertically. The gear 1732 is coaxially fixed with the rotation shaft of the spray gun 9 and meshes with the rack 1731.

[0041] Reference Figure 7 and Figure 8 The air supply component 10 includes an air inlet pipe 101, an air bag 102, a solenoid valve 103, and an air outlet 104, which are connected in sequence. The air inlet pipe 101 is connected to a branch air pipe. The air bag 102 is installed between the mounting plate 8 and the movable base 171. The solenoid valve 103 is installed on the movable base 171. The air outlet 104 faces downward and discharges air. The solenoid valve 103 controls the opening and closing of the air outlet 104. By controlling the opening and closing time of the solenoid valve 103, the air supply component 10 can discharge air intermittently during use. When the air supply component 10 discharges air, the airflow can be directed towards the casting to assist in dust removal from the casting.

[0042] Specifically, when the air supply component 10 is activated, it releases air at intervals. When the air supply component 10 is not releasing air, the airbag 102 continuously receives air without releasing it, causing the airbag 102 to store gas and gradually inflate, thus pushing the movable seat 171 downward. When the air supply component 10 releases air, the airbag 102 deflates, causing the second elastic element 172 to drive the movable component upward to reset. Thus, the reciprocating movement of the movable seat 171 causes the rack 1731 to drive the gear 1732 to rotate reciprocally, which in turn drives the spray gun 9 to oscillate reciprocally, thereby expanding the sandblasting range and improving the sandblasting effect.

[0043] Furthermore, to guide the movement of the movable seat 171 and the extension of the airbag 102, a telescopic cover 18 is provided between the mounting plate 8 and the movable seat 171. The telescopic cover 18 includes a first cover 181 and a second cover 182. The top of the first cover 181 is fixed to the lower surface of the mounting plate 8, and the bottom of the second cover 182 is fixed to the movable seat 171. The top of the second cover 182 slides vertically within the second cover 182, and the first cover 181 and the second cover 182 together enclose the airbag 102. Both the bottom inner periphery of the first cover 181 and the top outer periphery of the second cover 182 have baffles 22 to restrict the second cover 182 from sliding downwards and detaching from the first cover 181. At the same time, a second elastic element 172 is sleeved on the outer periphery of the telescopic cover 18.

[0044] Reference Figure 1 and Figure 9For the conveying chamber 11, the conveying chamber 11 is mounted on the side of the sandblasting chamber 1 with the outlet 5, and the conveying chamber 11 is connected to the sandblasting chamber 1 through the outlet 5. When the second door 4 closes the outlet 5, the sandblasting chamber 1 and the conveying chamber 11 are isolated. The first conveying mechanism 12 can be a belt conveyor or a roller conveyor, and the second conveying mechanism 13 can also be a belt conveyor or a roller conveyor. The second conveying mechanism 13 is located near the end of the first conveying mechanism 12 near the sandblasting chamber 1 and is located above the first conveying mechanism 12. The conveying direction of both the first conveying mechanism 12 and the second conveying mechanism 13 is from the conveying chamber 11 to the sandblasting chamber. The second conveying mechanism is driven by a transverse drive member 14 to move laterally in the conveying chamber 11. The transverse drive member 14 can be a screw and nut transmission mechanism driven by a motor, a linear motor, or a cylinder. In this embodiment, a screw and nut transmission mechanism is preferred.

[0045] After sandblasting is completed, outlet 5 is opened. At this time, the second conveying mechanism 13 enters the sandblasting chamber 1 through outlet 5 under the drive of the transverse drive component 14 and is located above the placement platform 16. Then, the clamping mechanism clamps the casting and moves it to a position close to the upper part of the second conveying mechanism 13. The clamping component 7 releases the clamp on the casting, allowing the casting to fall onto the second conveyor. The second conveying mechanism 13 then transports the casting towards the conveying chamber 11, causing the casting to fall from the end of the second conveying mechanism 13 away from the sandblasting chamber 1 onto the first conveying mechanism 12, and then the first conveying mechanism 12 sends it to the next process.

[0046] The implementation principle of the surface treatment device for recyclable magnesium alloy castings in this application embodiment is as follows: Inert gas is sprayed onto the casting through the gas supply component 10 to establish an inert environment around the casting, preventing oxidation of the magnesium alloy casting during sandblasting. The clamping mechanism employs two sets of vertically arranged clamps 71, which can automatically change the clamping points during sandblasting to avoid uncleaned areas. The spray gun 9 is driven by the airbag 102 to swing, expanding the sandblasting range. After sandblasting, the second conveying mechanism 13 enters the chamber to receive the casting and transfers it to the inert gas environment within the conveying chamber 11 for further transport to the next process.

[0047] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A surface treatment device for recyclable magnesium alloy castings, characterized in that, include: The sandblasting chamber (1) has an entrance (3) on one side that can be opened and closed through a first door (2) and an exit (5) on the other side that can be opened and closed through a second door (4). A sandblasting mechanism is installed in the sandblasting chamber (1) and is used to sandblast the castings; The clamping mechanism is located in the sandblasting chamber (1) and below the sandblasting mechanism. It is used to clamp the casting and drive the casting to rotate. Gas supply unit (10) is installed in the sandblasting chamber (1) and is used to supply inert gas into the sandblasting chamber (1); The delivery chamber (11) is filled with inert gas and is connected to the sandblasting chamber (1) through the outlet (5); The first conveying mechanism (12) is located in the conveying chamber (11) and is used to convey the casting to the next process. as well as The second conveying mechanism (13) is driven to move in the conveying chamber (11) by the transverse drive (14). When the outlet (5) is opened, it can enter the sandblasting chamber (1) through the outlet (5) to receive the casting and convey the casting to the first conveying mechanism (12).

2. The surface treatment device for recyclable magnesium alloy castings according to claim 1, characterized in that: Clamping mechanism includes Supporting framework (6); and The clamping assembly (7) has two sets, and the clamping directions of the two sets of clamping assemblies (7) are perpendicular to each other; each set of clamping assemblies (7) includes two opposing clamps (71), which are driven by rotational power (72) and rotated and connected to the support frame (6), and the rotation axes of the clamps (71) in the same set coincide.

3. The surface treatment device for recyclable magnesium alloy castings according to claim 2, characterized in that: Each fixture (71) includes Telescopic power component (711) is rotatably connected to the support frame (6); The base (712) is disposed at the telescopic end of the telescopic power component (711); The abutment (713) has one end moving in the base (712) along the telescopic direction of the telescopic power member (711), and the other end extending out of the base (712). The first elastic element (714) is connected between the base (712) and the abutment (713), providing elastic force to the abutment (713) to move outward from the base (712); and When the abutment (713) moves a set distance into the base (712) against the elastic force of the first elastic member (714), the sensor (715) is sensed and controls the telescopic power member (711) to stop telescopic.

4. The surface treatment device for recyclable magnesium alloy castings according to claim 1, characterized in that: The clamping mechanism is driven to move in the sandblasting chamber (1) by a vertical drive (15).

5. The surface treatment device for recyclable magnesium alloy castings according to claim 4, characterized in that: The surface treatment apparatus also includes a platform (16) which is located in the sandblasting chamber (1) and is used to support the casting when the clamping mechanism clamps the casting.

6. The surface treatment device for recyclable magnesium alloy castings according to claim 1, characterized in that: Sandblasting mechanism includes Mounting plate (8); and Spray guns (9) are multiple and hinged to mounting plate (8); Among them, the air supply component (10) corresponds to the spray gun (9) one by one, and a linkage component (17) is provided between the air supply component (10) and the spray gun (9) so that the spray gun (9) swings back and forth when the air supply component (10) delivers air at intervals.

7. The surface treatment device for recyclable magnesium alloy castings according to claim 6, characterized in that: Linkage components (17) include The movable seat (171) moves vertically on the mounting plate (8) for the installation of the gas supply component (10); The second elastic element (172) is connected between the movable base (171) and the mounting plate (8), providing an upward elastic force to the movable base (171); and The linkage (173) is located between the movable base (171) and the spray gun (9) so that the spray gun (9) rotates when the movable base (171) moves vertically. The gas supply component (10) has an air bladder (102) disposed between the mounting plate (8) and the movable seat (171). When the gas supply component (10) is not discharging gas, the air bladder (102) stores gas and gradually inflates to push the movable seat (171) to move upward. When the gas supply component (10) discharging gas, the air bladder (102) deflates, causing the second elastic element (172) to drive the linkage element (173) to move upward.

8. The surface treatment device for recyclable magnesium alloy castings according to claim 7, characterized in that: Linkage component (173) includes A rack (1731), disposed on a movable base (171), extends vertically; and The gear (1732) is fixed coaxially with the rotating shaft of the spray gun (9) and meshes with the rack (1731).

9. The surface treatment device for recyclable magnesium alloy castings according to claim 7, characterized in that: A telescopic cover (18) capable of vertical extension is provided between the mounting plate (8) and the movable seat (171). The telescopic cover (18) encloses the airbag (102) to guide the extension of the airbag (102).

10. A surface treatment device for recyclable magnesium alloy castings according to claim 7, characterized in that: The air supply unit (10) also includes an air inlet pipe (101), a solenoid valve (103) and an air outlet (104). The air inlet pipe (101), the air bag (102), the solenoid valve (103) and the air outlet (104) are connected in sequence. The solenoid valve (103) controls the opening and closing of the air outlet (104).

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