Powder cleaning machine with variable bin volume and convenient feeding and powder cleaning method

Abstract

The invention relates to a powder cleaning machine with variable bin volume and convenient feeding and a powder cleaning method. The powder cleaning machine comprises a powder cleaning bin, a feeding conveying mechanism, a lifting mechanism, a powder conveying mechanism and a PLC control module. A rotating platform is arranged in the powder cleaning bin, and an X-axis rotating mechanism and a Y-axis rotating mechanism are arranged below the rotating platform; a feeding door and a sensor are arranged on one side of the powder cleaning bin, and an organ cover and a fan are arranged at the top of the powder cleaning bin; the feeding conveying mechanism is used for conveying a workpiece to be subjected to powder cleaning into the powder cleaning bin and is mounted on the rotating platform; the lifting mechanism is mounted at the top of the powder cleaning bin and is used for changing the volume in the powder cleaning bin; the powder conveying mechanism is used for collecting and conveying powder falling from the powder cleaning machine; and the PLC control module is responsible for controlling all parts of the whole purifier. The volume of the powder cleaning bin can be adjusted according to different sizes of actual workpieces, alignment with a connector of the rotating platform is facilitated in the feeding process, and time needed in the actual using process is saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of additive manufacturing, and in particular relates to a powder cleaning machine and a powder cleaning method with variable chamber volume and convenient material loading. Background Art

[0002] Metal 3D printing technology is increasingly used in modern manufacturing, especially in the manufacture of metal parts. However, after printing, a large amount of unmelted powder will adhere to the surface or inside of the part, which not only affects the surface quality of the part, but may also cause harm to the environment and personal health. Therefore, the powder residue generated during 3D printing is a problem that needs to be solved.

[0003] With the continuous advancement of 3D printing technology and the expansion of its application areas, the requirements for powder cleaning equipment are becoming higher and higher. The development of efficient metal 3D printing powder cleaning machines has become an important part of improving the quality and safety of printed parts.

[0004] The existing powder purifier has a fixed internal powder cleaning space, which wastes a large part of the height space when it is compatible with small-sized workpieces that need to be cleaned; in the process of exhausting the air inside the chamber and filling it with inert gas to ensure the safety of the powder cleaning environment, a large amount of argon gas will be wasted, which increases the time consumed by the cleaning process. In addition, the existing powder purifiers mostly use high-altitude hoisting to load materials from the upper side of the equipment or use forklifts to lift and load materials, which makes the loading process more cumbersome, increases the danger, and is not easy to align the interface between the workpiece and the rotating platform. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention proposes a powder cleaning machine and a powder cleaning method with variable chamber volume and convenient loading. The powder cleaning machine realizes that the volume of the powder cleaning chamber can be adjusted according to the actual size of the workpiece, thereby reducing the consumption of argon gas, and the loading process is convenient and aligned with the rotating platform interface, saving the time required in the actual use process, and improving the operability and safety of the staff during the operation process; it solves the problems of large gas consumption in the unutilized space during the operation of the existing powder cleaning machine, the inability to quickly and conveniently align the loading with the rotating platform interface, and the high risk of high-altitude lifting loading.

[0006] The present invention is implemented as follows: a powder purifier with variable chamber volume and convenient feeding includes six parts: a powder purifying chamber, a feeding conveying mechanism, a lifting mechanism, a powder conveying mechanism, and a PLC control module;

[0007] A rotating platform is provided in the powder cleaning chamber, and an X-axis rotating mechanism and a Y-axis rotating mechanism are provided below the rotating platform. The X-axis rotating mechanism is used to drive the rotating platform to realize ±180-degree horizontal rotation, and the Y-axis rotating mechanism is used to drive the rotating platform to realize unilateral rotation of 0 to 180 degrees; a loading door and a sensor are provided on one side of the powder cleaning chamber, and the loading and conveying mechanism is located on the side of the powder cleaning chamber with the loading door, and the sensor is used to detect whether the electric flat car of the loading and conveying mechanism moves to a specified position; an accordion cover and a fan are provided on the top of the powder cleaning chamber, and the fan is used to exhaust the air in the powder cleaning chamber and fill the powder cleaning chamber with argon gas at the same time;

[0008] The feeding and conveying mechanism is used to transport the workpiece to be cleaned into the powder cleaning chamber and install it on the rotating platform; the feeding and conveying mechanism includes an electric flat car, the electric flat car is provided with a horizontal moving mechanism for transporting the workpiece to be cleaned into the powder cleaning chamber, the horizontal moving mechanism is provided with a vertical lifting mechanism for lifting the workpiece to be cleaned to a specified height and placing the workpiece to be cleaned on the rotating platform, a substrate mounting plate is placed on the vertical lifting mechanism, and the workpiece to be cleaned is mounted on the substrate mounting plate;

[0009] The lifting mechanism is installed on the top of the powder cleaning chamber and is used to change the volume inside the powder cleaning chamber; the lifting mechanism includes a lifting motor and a transmission shaft, the output end of the lifting motor is connected to the transmission shaft, at least one driving gear is installed on the transmission shaft, the driving gear is meshed with a chain, one end of the chain is connected to the accordion cover of the powder cleaning chamber, and the other end is connected to a counterweight;

[0010] The powder conveying mechanism is used to collect and convey the powder dropped from the powder purifier;

[0011] The PLC control module is responsible for the control of all components of the powder purifier.

[0012] In the above technical solution, preferably, the horizontal moving mechanism includes a guide shaft, a slider, a support plate, a feeding drive motor, a transmission gear, and a rack. The guide shaft and the rack are arranged on the electric flat car, the slider is slidably arranged on the guide shaft, the support plate is installed on the slider, the feeding drive motor is installed on the support plate, and the output end of the feeding drive motor is connected to the transmission gear, and the transmission gear cooperates with the rack.

[0013] In the above technical solution, preferably, an air hammer is installed on the substrate mounting plate.

[0014] In the above technical solution, preferably, the vertical lifting mechanism is a hydraulic cylinder, the cylinder body of the hydraulic cylinder is installed on the support plate of the horizontal moving mechanism, and the base plate mounting plate is placed on the telescopic rod of the hydraulic cylinder.

[0015] In the above technical solution, it is further preferred that a positioning groove cooperating with the telescopic rod of the hydraulic cylinder is provided at the bottom of the base plate mounting plate.

[0016] In the above technical solution, preferably, the lifting mechanism also includes a one-output two-commutator and a right-angle commutator, the lifting motor is connected to the input end of the one-output two-commutator, the two output ends of the one-output two-commutator are respectively connected to the input end of the right-angle commutator, and each output end of the right-angle commutator is respectively connected to a transmission shaft.

[0017] In the above technical solution, preferably, the transmission shaft is installed on the top of the powder cleaning chamber through a bearing seat.

[0018] In the above technical solution, preferably, a driven gear is arranged on one side of the driving gear, and the chain meshes with the driving gear and the corresponding driven gear at the same time.

[0019] In the above technical solution, preferably, the powder conveying mechanism includes a powder pump, a powder storage tank and a transfer tank which are connected in sequence, and the inlet of the powder pump is connected to the conical structure at the bottom of the powder cleaning chamber.

[0020] A powder cleaning method comprises the following steps:

[0021] S1. Hoist the workpiece to be cleaned onto the base plate, tighten it with bolts, then open the loading door of the powder cleaning chamber, control the electric flat car to move forward to the specified position and trigger the sensor to stop;

[0022] S2. Use the clamping bolt to press the guide shaft onto the Y-axis rotating mechanism and level it. Control the hydraulic pump to lift the hydraulic cylinder to lift the workpiece to be cleaned to a specified height. Then, the feeding drive motor rotates to transport the workpiece to be cleaned into the powder cleaning chamber.

[0023] Then control the hydraulic pump to lower the hydraulic cylinder, place the workpiece to be cleaned together with the base plate mounting plate on the rotating platform and lock it with bolts. After the hydraulic cylinder is lowered into place, remove the clamping bolts on the guide shaft, the feeding drive motor rotates and returns to the initial position, control the electric flat car to return to the initial position, close the feeding door of the powder cleaning chamber, and the feeding is completed;

[0024] S3, control the rotation of the lifting motor to drive the transmission shaft to rotate, and control the lifting of the accordion cover through the active gear and chain. After the accordion cover reaches the specified position, the fan starts to discharge the air in the powder cleaning bin and fill the powder cleaning bin with argon gas for washing. After the washing is completed, the X-axis rotating mechanism and the Y-axis rotating mechanism start to rotate and swing to clean the powder, and at the same time, the air hammer is used to vibrate the powder. The cleaned powder falls into the powder pump through the conical structure at the bottom of the powder cleaner. After the full material signal of the powder pump is triggered, the powder is pumped to the powder storage tank through the argon gas pump. After the powder storage tank is full, it falls into the transfer tank. After the transfer tank is full, the operator transports the recovered powder away for subsequent powder processing.

[0025] The advantages and positive effects of the present invention are:

[0026] The powder cleaning machine with variable chamber volume and convenient loading of the present invention comprises six main components, namely a powder cleaning chamber, a loading and conveying mechanism, a lifting mechanism, a powder conveying mechanism, and a PLC control module. During the powder cleaning process, the volume of the powder cleaning chamber can be changed according to actual use, thereby reducing the time required for gas washing and the consumption of argon gas used, and powder cleaning is started by the rotation and swing of the X-axis rotating mechanism, the Y-axis rotating mechanism and the vibration of the air hammer; and by controlling the electric flat car to transport the loading, the loading can be quickly aligned, reducing the operation time, reducing the difficulty of operation, and the operation is convenient, fast, safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional diagram of a powder purifier provided by an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the interior of the powder cleaning chamber provided by an embodiment of the present invention.

[0029] Figure 3 is a structural schematic diagram of a lifting mechanism provided by an embodiment of the present invention;

[0030] Figure 4 It is a front view of the feeding and conveying mechanism provided by an embodiment of the present invention when feeding materials into the powder cleaning chamber.

[0031] In the figure: 1. Powder cleaning chamber; 2. Rotating platform; 3. X-axis rotating mechanism; 4. Y-axis rotating mechanism; 5. Loading door; 6. Electric flat car; 7. Guide shaft; 8. Slider; 9. Support plate; 10. Loading drive motor; 11. Rack; 12. Hydraulic cylinder; 13. Base plate mounting plate; 14. Air hammer; 15. Lifting motor; 16. One-out-two commutator; 17. Right-angle commutator; 18. Transmission shaft; 19. Driving gear; 20. Driven gear; 21. Chain; 22. Organ cover; 23. Fan; 24. Powder pump; 25. Powder storage tank; 26. Transfer tank; 27. Workpiece to be cleaned. DETAILED DESCRIPTION

[0032] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0033] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] See also Figure 1 to Figure 4 An embodiment of the present invention provides a powder cleaning machine with variable chamber volume and convenient loading, including six parts: a powder cleaning chamber 1, a loading and conveying mechanism, a lifting mechanism, a powder conveying mechanism, and a PLC control module.

[0036] A rotating platform 2 is arranged in the powder cleaning chamber 1, and an X-axis rotating mechanism 3 and a Y-axis rotating mechanism 4 are arranged below the rotating platform 2, the X-axis rotating mechanism 3 is used to drive the rotating platform 2 to realize ±180 degree horizontal rotation, and the Y-axis rotating mechanism 4 is used to drive the rotating platform 2 to realize single-sided rotation of 0 to 180 degrees; a loading door 5 and a sensor are arranged on one side of the powder cleaning chamber 1, and the loading and conveying mechanism is located on the side of the powder cleaning chamber 1 where the loading door 5 is provided, and the sensor is used to detect whether the electric flat car 6 of the loading and conveying mechanism moves to a specified position; an accordion cover 22 and a fan 23 are arranged on the top of the powder cleaning chamber 1, and the fan 23 is used to exhaust the air in the powder cleaning chamber 1 and fill the powder cleaning chamber 1 with argon gas at the same time.

[0037] The loading and conveying mechanism is used to transport the workpiece to be cleaned into the powder cleaning chamber 1 and install it on the rotating platform 2; the loading and conveying mechanism includes an electric flat car 6, and the electric flat car 6 is provided with a horizontal moving mechanism for transporting the workpiece to be cleaned into the powder cleaning chamber 1, and the horizontal moving mechanism is provided with a vertical lifting mechanism for lifting the workpiece to be cleaned to a specified height and placing the workpiece to be cleaned on the rotating platform 2, and a substrate mounting plate 13 is placed on the vertical lifting mechanism, and the workpiece to be cleaned 27 is installed on the substrate mounting plate 13.

[0038] The lifting mechanism is installed on the top of the powder cleaning chamber 1, and is used to change the volume inside the powder cleaning chamber 1; the lifting mechanism is responsible for being compatible with powder cleaning parts of different heights, changing the internal volume of the powder cleaning chamber 1, and reducing argon consumption; the lifting mechanism includes a lifting motor 15 and a transmission shaft 18, the output end of the lifting motor 15 is connected to the transmission shaft 18, at least one driving gear 19 is installed on the transmission shaft 18, the driving gear 19 is meshed with a chain 21, one end of the chain 21 is connected to the accordion cover 22 of the powder cleaning chamber 1, and the other end is connected to a counterweight.

[0039] The powder conveying mechanism is used to collect the powder dropped from the powder purifier and to collect the collected powder for subsequent processing.

[0040] The PLC control module is responsible for the control of the powder purifier's overall sensors, valve body, air hammer, motor and other components.

[0041] Specifically, the horizontal moving mechanism includes a guide shaft 7, a slider 8, a support plate 9, a feeding drive motor 10, a transmission gear, and a rack 11. The guide shaft 7 and the rack 11 are arranged on the electric flat car 6. The slider 8 is slidably arranged on the guide shaft 7. The support plate 9 is installed on the slider 8. The feeding drive motor 10 is installed on the support plate 9. The output end of the feeding drive motor 10 is connected to the transmission gear, and the transmission gear cooperates with the rack 11. The feeding drive motor 10 is started, driving the transmission gear to move along the rack 11, and then driving the support plate 9 to move along the guide shaft 7 under the action of the slider 8. In this embodiment, two guide shafts 7 are provided, which are respectively located on both sides of the electric flat car 6. At least two sliders 8 are provided on each guide shaft 7. The rack 11 is located in the middle of the electric flat car 6 to ensure the smooth movement of the support plate 9.

[0042] An air hammer 14 is installed on the substrate mounting plate 13, and during powder cleaning, the air hammer 14 strikes the substrate mounting plate 13 to achieve vibration cleaning.

[0043] The vertical lifting mechanism is a hydraulic cylinder 12, the cylinder body of the hydraulic cylinder 12 is mounted on the support plate 9 of the horizontal moving mechanism, and the substrate mounting plate 13 is placed on the telescopic rod of the hydraulic cylinder 12 to facilitate lifting and lowering adjustment. A positioning groove is provided at the bottom of the substrate mounting plate 13 to cooperate with the telescopic rod of the hydraulic cylinder 12, ensuring that the substrate mounting plate 13 can be stably placed on the telescopic rod of the hydraulic cylinder 12.

[0044] The lifting mechanism also includes a one-out-two commutator 16 and a right-angle commutator 17. The lifting motor 15 is connected to the input end of the one-out-two commutator 16 through a coupling. The two output ends of the one-out-two commutator 16 are respectively connected to the input end of the right-angle commutator 17 through a coupling. The output end of each right-angle commutator 17 is respectively connected to a transmission shaft 18 through a coupling. The transmission shaft 18 is installed on the top of the powder cleaning chamber 1 through a bearing seat, so that the transmission shaft 18 rotates smoothly; each transmission shaft 18 is installed with at least one driving gear 19, and a driven gear 20 is arranged on one side of the driving gear 19. The driving gear 19 and the corresponding driven gear 20 are meshed with a chain 21 at the same time. One end of the chain 21 is connected to the accordion cover 22 of the powder cleaning chamber 1, and the other end is connected to a counterweight. The rotation of the transmission shaft 18 drives the driving gear 19 to rotate, and then drives the chain 21 to move on the driving gear 19 and the corresponding driven gear 20, and controls the accordion cover 22 to rise and fall.

[0045] The powder conveying mechanism includes a powder pump 24, a powder storage tank 25 and a transfer tank 26 which are connected in sequence, and the inlet of the powder pump 24 is connected to the conical structure at the bottom of the powder cleaning chamber 1. The cleaned powder enters the powder pump 24, the powder storage tank 25 and the transfer tank 26 in sequence through the conical structure at the bottom of the powder cleaning machine, and is then transported away for subsequent powder processing.

[0046] The powder cleaning method of the powder cleaning machine comprises the following steps:

[0047] S1, hoist the workpiece 27 to be cleaned by the overhead crane and place it on the base plate mounting plate 13, tighten it with bolts, then open the loading door 5 of the powder cleaning chamber 1, and control the electric flat car 6 by the remote control to move forward to the specified position and trigger the sensor and then stop;

[0048] S2. Use the clamping bolt to press the guide shaft 7 onto the Y-axis rotating mechanism 4 and level it. Manually control the hydraulic pump to lift the hydraulic cylinder 12 to lift the workpiece 27 to be cleaned to a specified height. Then, the feeding drive motor 10 rotates to transport the workpiece 27 to be cleaned into the cleaning chamber 1 through the transmission gear, rack 11, slider 8, and guide shaft 7.

[0049] Then manually control the hydraulic pump to lower the hydraulic cylinder 12, slowly place the workpiece 27 to be cleaned together with the base plate mounting plate 13 on the rotating platform 2 and tighten them with bolts. After the hydraulic cylinder 12 is lowered into place, remove the clamping bolts on the guide shaft 7, and the feeding drive motor 10 rotates and returns to the initial position. Manually control the electric flat car 6 to return to the initial position, close the feeding door 5 of the powder cleaning chamber 1, and the feeding is completed.

[0050] S3, control the lifting motor 15 to rotate, drive the transmission shaft 18 to rotate through the one-out-two commutator 16 and the right-angle commutator 17, control the lifting of the accordion cover 22 through the driving gear 19 and the chain 21 to change the volume required for powder cleaning inside the powder cleaning chamber 1, after the accordion cover 22 reaches the specified position, the fan 23 starts to discharge the air in the powder cleaning chamber 1 and fills the powder cleaning chamber 1 with argon gas for washing; after the washing is completed, the X-axis rotating mechanism 3 and the Y-axis rotating mechanism 4 begin to rotate and swing to clean the powder under the action of the corresponding motor and reducer, and at the same time, the air hammer 14 vibrates to clean the powder; the cleaned powder falls into the powder pump 24 through the conical structure at the bottom of the powder cleaning machine, and after the full material signal of the powder pump 24 is triggered, the powder is pumped into the powder storage tank 25 through the argon gas pump, and the powder storage tank 25 falls into the transfer tank 26 after it is full, and the operator transports the recovered powder away for subsequent powder processing after the transfer tank 26 is full.

[0051] The powder cleaning machine with variable chamber volume and convenient loading of the present invention can realize that the volume of the powder cleaning chamber 1 can be changed according to actual use during the powder cleaning process, thereby reducing the time required for gas washing and the consumption of argon gas used, and starts powder cleaning through the rotation and swing of the X-axis rotating mechanism 3, the Y-axis rotating mechanism 4 and the vibration of the air hammer 14; and by controlling the electric flat car 6 to transport and load the materials, the loading can be quickly aligned, reducing the operation time and reducing the difficulty of operation. The operation is convenient, fast, safe and reliable.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A powder purifier with variable chamber volume and convenient loading, characterized in that: It includes six parts: powder cleaning chamber, feeding conveying mechanism, lifting mechanism, powder conveying mechanism and PLC control module; A rotating platform is provided in the powder cleaning chamber, and an X-axis rotating mechanism and a Y-axis rotating mechanism are provided below the rotating platform. The X-axis rotating mechanism is used to drive the rotating platform to realize ±180-degree horizontal rotation, and the Y-axis rotating mechanism is used to drive the rotating platform to realize unilateral rotation of 0 to 180 degrees; a loading door and a sensor are provided on one side of the powder cleaning chamber, and the loading and conveying mechanism is located on the side of the powder cleaning chamber with the loading door, and the sensor is used to detect whether the electric flat car of the loading and conveying mechanism moves to a specified position; an accordion cover and a fan are provided on the top of the powder cleaning chamber, and the fan is used to exhaust the air in the powder cleaning chamber and fill the powder cleaning chamber with argon gas at the same time; The feeding and conveying mechanism is used to transport the workpiece to be cleaned into the powder cleaning chamber and install it on the rotating platform; the feeding and conveying mechanism includes an electric flat car, the electric flat car is provided with a horizontal moving mechanism for transporting the workpiece to be cleaned into the powder cleaning chamber, the horizontal moving mechanism is provided with a vertical lifting mechanism for lifting the workpiece to be cleaned to a specified height and placing the workpiece to be cleaned on the rotating platform, a substrate mounting plate is placed on the vertical lifting mechanism, and the workpiece to be cleaned is mounted on the substrate mounting plate; The lifting mechanism is installed on the top of the powder cleaning chamber and is used to change the volume inside the powder cleaning chamber; the lifting mechanism includes a lifting motor and a transmission shaft, the output end of the lifting motor is connected to the transmission shaft, at least one driving gear is installed on the transmission shaft, the driving gear is meshed with a chain, one end of the chain is connected to the accordion cover of the powder cleaning chamber, and the other end is connected to a counterweight; The powder conveying mechanism is used to collect and convey the powder dropped from the powder purifier; The PLC control module is responsible for the control of all components of the powder purifier.

2. The powder purifier with variable chamber volume and convenient loading according to claim 1 is characterized in that: The horizontal moving mechanism includes a guide shaft, a slider, a support plate, a feeding drive motor, a transmission gear, and a rack. The guide shaft and the rack are arranged on the electric flat car, the slider is slidably arranged on the guide shaft, the support plate is installed on the slider, the feeding drive motor is installed on the support plate, and the output end of the feeding drive motor is connected to the transmission gear, and the transmission gear cooperates with the rack.

3. The powder purifier with variable chamber volume and convenient loading according to claim 1 is characterized in that: An air hammer is installed on the base plate mounting plate.

4. The powder purifier with variable chamber volume and convenient loading according to claim 1, characterized in that: The vertical lifting mechanism is a hydraulic cylinder, the cylinder body of the hydraulic cylinder is installed on the support plate of the horizontal moving mechanism, and the base plate mounting plate is placed on the telescopic rod of the hydraulic cylinder.

5. The powder purifier with variable chamber volume and convenient loading according to claim 4 is characterized in that: A positioning groove matched with the telescopic rod of the hydraulic cylinder is arranged at the bottom of the base plate mounting plate.

6. The powder purifier with variable chamber volume and convenient loading according to claim 1, characterized in that: The lifting mechanism also includes a one-output two-commutator and a right-angle commutator. The lifting motor is connected to the input end of the one-output two-commutator. The two output ends of the one-output two-commutator are respectively connected to the input end of the right-angle commutator, and each output end of the right-angle commutator is respectively connected to a transmission shaft.

7. The powder purifier with variable chamber volume and convenient loading according to claim 1, characterized in that: The transmission shaft is installed on the top of the powder cleaning chamber through a bearing seat.

8. The powder purifier with variable chamber volume and convenient loading according to claim 1, characterized in that: A driven gear is arranged on one side of the driving gear, and the chain meshes with the driving gear and the corresponding driven gear at the same time.

9. The powder purifier with variable chamber volume and convenient loading according to claim 1, characterized in that: The powder conveying mechanism comprises a powder pump, a powder storage tank and a transfer tank which are connected in sequence, and the inlet of the powder pump is connected to the conical structure at the bottom of the powder cleaning chamber.

10. A powder cleaning method, characterized in that: The powder cleaning method is implemented based on the powder cleaning machine with variable chamber volume and convenient loading according to any one of claims 1 to 9, and comprises the following steps: S1. Hoist the workpiece to be cleaned onto the base plate, tighten it with bolts, then open the loading door of the powder cleaning chamber, control the electric flat car to move forward to the specified position and trigger the sensor to stop; S2. Use the clamping bolt to press the guide shaft onto the Y-axis rotating mechanism and level it, control the hydraulic pump to lift the hydraulic cylinder, and lift the workpiece to be cleaned to the specified height; Then the feeding drive motor rotates to transport the workpiece to be cleaned into the powder cleaning chamber; Then control the hydraulic pump to lower the hydraulic cylinder, place the workpiece to be cleaned together with the base plate mounting plate on the rotating platform and lock it with bolts. After the hydraulic cylinder is lowered into place, remove the clamping bolts on the guide shaft, the feeding drive motor rotates and returns to the initial position, control the electric flat car to return to the initial position, close the feeding door of the powder cleaning chamber, and the feeding is completed; S3, control the rotation of the lifting motor to drive the transmission shaft to rotate, and control the lifting of the accordion cover through the active gear and chain. After the accordion cover reaches the specified position, the fan starts to discharge the air in the powder cleaning bin and fill the argon gas into the powder cleaning bin at the same time; After the air washing is completed, the X-axis rotating mechanism and the Y-axis rotating mechanism begin to rotate and swing to clean the powder, and at the same time, the air hammer vibrates to clean the powder; the cleaned powder falls into the powder pump through the conical structure at the bottom of the powder cleaner. After the full material signal of the powder pump is triggered, the powder is pumped to the powder storage tank through the argon gas pump. After the powder storage tank is full, it falls into the transfer tank. After the transfer tank is full, the operator will transport the recovered powder away for subsequent powder processing.

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