CN112520252B - Environment-controllable storage equipment and storage technology for metal powder storage - Google Patents

Abstract

The invention discloses storage equipment with controllable metal powder storage environment and a storage process, comprising a centralized cover, an outer bin and four inner bins, wherein the outer bin is arranged at the central part of the centralized cover, the inner bin is arranged inside the outer bin, a ventilation structure and a temperature control structure are arranged inside the centralized cover, a partition plate is arranged inside the outer bin, the inner part of the outer bin is divided into four cavities with the same structure, the four inner bins are arranged inside the outer bin through a moving structure, the end parts of the outer bins are provided with driving switch doors, the outer bins are arranged outside the outer bin, and an annular material changing unit is arranged inside the centralized cover. The invention has the beneficial effects that the technical scheme provides a device with controllable temperature environment, and different metal powder is stored respectively, so that the flexibility of storing the metal powder is improved, and the technical problems in the background technology are effectively solved.

Description

Environment-controllable storage equipment and storage technology for metal powder storage

Technical Field

The invention relates to the field of metal powder storage, in particular to storage equipment and a storage process with controllable environment for metal powder storage.

Background

After the metal powder is processed, the metal powder needs to be temporarily stored by using a tool, and the metal powder has small particles and can change in the changing process of the temperature environment, so that the sales quality in the later period is influenced;

meanwhile, because the metal powder is more in variety, the metal powder needs to be stored separately when being stored, and the existing storage method usually uses a plurality of tools for storage, so that the storage limitation is larger.

Disclosure of Invention

The invention aims to solve the problems, and designs a storage device and a storage process with controllable metal powder storage environments.

The technical scheme includes that the storage equipment with the controllable metal powder storage environment and the storage technology comprise a centralized cover, an outer bin and four inner bins, wherein the outer bin is arranged at the central part of the centralized cover, the inner bins are arranged inside the outer bin, a ventilation structure and a temperature control structure are arranged inside the centralized cover, a partition plate is arranged inside the outer bin, the inner bin is divided into four cavities with the same structure, the four inner bins are arranged inside the outer bin through a moving structure, a driving switch door is arranged at the end part of the outer bin, the outer bin is arranged outside the outer bin, and an annular material changing unit is arranged inside the centralized cover;

The annular material changing unit comprises a displacement structure and a feeding structure;

The displacement structure comprises: the device comprises an annular sliding rail, an annular rack, a movable base, a torque motor and a first gear;

The annular sliding rail is arranged in the centralized cover and surrounds the outer bin, the annular rack is positioned on one side of the annular sliding rail, one end of the movable base is movably connected with the annular sliding rail, the other end of the movable base is fixedly provided with a torque motor, the driving end of the torque motor is connected with a gear, and the first gear is meshed with the annular rack;

the feeding structure comprises: the device comprises a mounting seat, a shaft bracket, a shaft body, a connecting piece, a limiting motor, a shaft body motor, a driving wheel, a driven wheel, a limiting strip and a material bin;

the mounting seat is arranged on the mobile machine seat, the shaft bracket is fixed on the mounting seat, the shaft body is inserted on the shaft bracket, the driven wheel is sleeved on the shaft body, the driving wheel is connected with the driving end of the limiting motor, the driving wheel is meshed with the driven wheel, one end of the connecting piece is connected with the shaft body, the other end of the connecting piece is connected with the material bin, the limiting motor is arranged on the mounting seat, the telescopic end of the limiting motor is connected with the limiting strip, and the limiting strip can be meshed with the driving wheel;

The material bin bottom is provided with a pipeline, the pipeline is provided with an electronic shutter, and the inner bin is provided with an outwards protruding inclined receiving groove.

Preferably, the ventilation structure comprises: four chain shafts with the same structure, four chain wheels with the same structure, four fan blades with the same structure, four pinch rollers with the same structure, two chains with the same structure, a driving motor, a driving wheel and four grid plates with the same structure.

The four rotating shafts are inserted at the bottom of the ventilating box and are mutually symmetrical, the four chain wheels are respectively arranged on the four chain shafts, the four fan blades are sleeved on the four chain shafts, the driving end of the driving motor is connected with the chain wheels, the two chains are sleeved between every two chain wheels, the four pressing wheels are attached to the four chains, the driving wheel is located between the two chains and meshed with the chains, the end face of the ventilating box is located at the bottom of the main box, four air outlets are formed in the end face of the main box, the bottom of the main box is provided with an embedded opening corresponding to the air outlets, the grid plates are embedded inside the embedded opening, and shielding structures are arranged on the embedded opening.

Preferably, the temperature control structure comprises: temperature sensor, air conditioner inner unit and air conditioner outer unit;

The temperature sensor is arranged inside the centralized cover, the air conditioner indoor unit is arranged inside the centralized cover, and the air conditioner outdoor unit is arranged outside the centralized cover.

Preferably, the moving structure comprises: the linear module translation stage, a pair of guide rails and a bearing seat;

The linear module translation platform is arranged on the inner bottom surface of the outer bin, the pair of guide rails are respectively arranged on two sides of the linear module translation platform, the bearing seat is movably connected to the pair of guide rails, and the inner bin is arranged on the bearing seat.

Preferably, the driving switch door comprises: the device comprises a rotating motor, a rotating arm, a telescopic motor, a switch motor, four switch doors, four door body shafts and four cross positioning convex blocks;

The outer wall of the outer bin is provided with four square openings with the same structure, the switch door is movably inserted into the outer wall of the switch door through the door body, the door body shaft penetrates through the end part of the outer bin, the end face of the door body shaft is provided with a cross positioning groove, the rotating motor is arranged at the end part of the outer bin, the rotating arm is connected with the driving end of the rotating motor, the telescopic motor is connected with one end of the rotating arm, the switch motor is connected with the telescopic end of the telescopic motor, the cross positioning protruding block is connected with the driving end of the switch motor, and the cross positioning protruding block can be inserted into the cross positioning groove.

Preferably, the shielding structure comprises: the cover plate, the second gear and the second rack;

The ventilation box is provided with an embedded opening, the ventilation box is provided with a sliding groove which extends downwards from the end parts of the two ventilation boxes and passes through the embedded opening, the cover plate is movably inserted into the sliding groove, the second rack is connected with the cover plate, the second gear is arranged on the upper end face of the ventilation box through the frame body and is provided with a torsion motor, and the second gear is meshed with the second rack.

Preferably, a fixing frame is arranged between the rotating motor and the end part of the outer bin.

Preferably, a motor frame is arranged between the switch motor and the telescopic end of the telescopic motor.

An environment-controllable storage process for metal powder storage is characterized by comprising the following steps:

s1, firstly, placing metal powder in a feeding structure in an annular material changing unit, and controlling a displacement structure in the annular material changing unit to move the feeding structure to the vicinity of an inner bin to be placed;

s2, controlling the driving switch door to open the corresponding door body, controlling the moving structure to move the inner bin out of the outer bin, controlling the feeding structure to start feeding action, and controlling the moving structure to retract the inner bin after feeding is completed, and driving the switch door to close;

and S3, carrying out ventilation operation in the ventilation structure pair on the centralized cover, monitoring the internal temperature in real time through the temperature control structure, and raising the internal temperature through the temperature control structure after the temperature is lower than a set value.

The technical scheme provides the storage equipment and the storage process with controllable metal powder storage environments, wherein the temperature environments can be controlled, and different metal powder can be stored respectively, so that the flexibility of storing the metal powder is improved, and the technical problems in the background art are effectively solved.

Drawings

FIG. 1 is a schematic diagram of a storage device and a storage process with controllable metal powder storage environment;

FIG. 2 is a schematic structural view of a loading structure of an environment-controllable storage device for metal powder storage according to the present invention;

FIG. 3 is a schematic diagram of a mobile structure of an environment-controllable storage device for metal powder storage according to the present invention;

FIG. 4 is a schematic diagram of a storage device driving a door to open and close with controllable environment for storing metal powder according to the present invention;

FIG. 5 is a schematic diagram of a storage device driving switch door with controllable metal powder storage environment according to the present invention;

FIG. 6 is a schematic structural diagram of a displacement structure of an environmentally controllable storage device for metal powder storage according to the present invention;

FIG. 7 is a schematic diagram of a ventilation structure of an environment-controllable storage device for metal powder storage according to the present invention;

FIG. 8 is a schematic view of the structure of an environmental-controllable storage device pipeline and an electronic shutter for metal powder storage according to the present invention;

FIG. 9 is a schematic diagram of a storage device with controllable environment for storing metal powder, which is partially enlarged;

FIG. 10 is a schematic view of a storage device with controllable environment for storing metal powder, which is partially enlarged;

In the figure, 1, a centralized cover; 2. an outer bin; 3. an inner bin; 4. an annular slide rail; 5. an annular rack; 6. moving the machine base; 7. a torque motor; 8. a first gear; 9. a mounting base; 10. a shaft bracket; 11. a shaft body; 12. a connecting piece; 13. a limit motor; 14. a shaft motor; 15. a driving wheel; 16. driven wheel; 17. a limit bar; 18. a material bin; 19. a pipe; 20. an electronic shutter; 21. a receiving groove; 22. a chain shaft; 23. a sprocket; 24. a fan blade; 25. a pinch roller; 26. a chain; 27. an active motor; 28. a chain wheel; 29. a grating plate; 30. a temperature sensor; 31. an air conditioner indoor unit; 32. an air conditioner external unit; 33. a linear module translation stage; 34. a rotating arm; 35. a telescopic motor; 36. switching on and off the motor; 37. opening and closing a door; 38. a door body shaft; 39. a cross positioning lug; 40. a cover plate; 41. a second gear; 42. a fixing frame; 43. a motor frame; 44. a torque motor; 45. and rotating the motor.

Detailed Description

The present invention is described in detail below with reference to the accompanying drawings, and as shown in fig. 1-10, an environment-controllable storage device for metal powder storage and a storage process thereof.

Example 1

The storage equipment with controllable metal powder storage environment comprises a centralized cover 1, an outer bin 2 and four inner bins 3, wherein the outer bin 2 is arranged at the central part of the centralized cover 1, the inner bins 3 are arranged inside the outer bin 2, a ventilation structure and a temperature control structure are arranged inside the centralized cover 1, a partition plate is arranged inside the outer bin 2, the inner part of the outer bin 2 is divided into four cavities with the same structure, the four inner bins 3 are arranged inside the outer bin 2 through a moving structure, the end parts of the outer bins 2 are provided with driving switch doors 37, the outer bins 2 are arranged outside, and an annular material changing unit is arranged inside the centralized cover 1;

The annular material changing unit comprises a displacement structure and a feeding structure;

Firstly, placing metal powder in a feeding structure in an annular reloading unit, and controlling a displacement structure in the annular reloading unit to move the feeding structure to the vicinity of an inner bin 3 to be placed; the driving switch door 37 is controlled to open the corresponding door body, the moving structure is controlled to move the inner bin 3 out of the outer bin 2, the feeding structure is controlled to start feeding action, and after feeding is completed, the moving structure is controlled to retract the inner bin 3, and the driving switch door 37 is controlled to be closed; the ventilation structure pair on the centralized cover 1 is used for carrying out ventilation work, the temperature control structure is used for monitoring the internal temperature in real time, and the temperature control structure is used for increasing the internal temperature when the temperature is lower than a set value;

specifically, the displacement structure includes: the device comprises an annular sliding rail 4, an annular rack 5, a mobile base 6, a torque motor 7 and a first gear 8;

the annular sliding rail 4 is arranged in the centralized cover 1 and surrounds the outer bin 2, the annular rack 5 is positioned on one side of the annular sliding rail 4, one end of the movable base 6 is movably connected with the annular sliding rail 4, the other end of the movable base is fixedly provided with a torque motor 7, the driving end of the torque motor 7 is connected with a gear, and the first gear 8 is meshed with the annular rack 5;

It should be noted that, in the above description, the torque motor 7 is used for driving the gear, after the gear is meshed with the annular rack 5, the first gear 8 moves with the moving base 6, so that the feeding structure on the moving base 6 can correspondingly move, and meanwhile, the annular slide rail 4 is arranged on the moving base 6 to ensure stability of the moving base 6, so that stable movement of the moving base 6 is ensured.

Specifically, the material loading structure includes: the device comprises a mounting seat 9, a shaft bracket 10, a shaft body 11, a connecting piece 12, a limit motor 13, a shaft body 11 motor, a driving wheel 15, a driven wheel 16, a limit bar 17 and a material bin 18;

The mounting seat 9 is arranged on the mobile machine seat 6, the shaft bracket 10 is fixed on the mounting seat 9, the shaft body 11 is inserted on the shaft bracket 10, the driven wheel 16 is sleeved on the shaft body 11, the driving wheel 15 is connected with the driving end of the limiting motor 13, the driving wheel 15 is meshed with the driven wheel 16, one end of the connecting piece 12 is connected with the shaft body 11, the other end of the connecting piece is connected with the material bin 18, the limiting motor 13 is arranged on the mounting seat 9, the telescopic end of the limiting motor is connected with the limiting strip 17, and the limiting strip 17 can be meshed with the driving wheel 15;

the bottom of the material bin 18 is provided with a pipeline 19, the pipeline 19 is provided with an electronic shutter 20, and the inner bin 3 is provided with an outwardly protruding and inclined material receiving groove 21.

It should be noted that, when the material in the material bin 18 is filled, the displacement structure moves to a designated position, the driving switch door 37 is controlled to open, then the moving structure moves out of the outer bin 2, the motor of the shaft body 11 is controlled to drive the driving wheel 15, after the driving wheel 15 is meshed with the driven wheel 16, the connecting piece 12 on the shaft body 11 drives the material bin 18 to rotate and incline, the electronic baffle door 20 is opened, the material flows out of the pipeline 19 and enters the material receiving groove 21 of the inner bin 3, so that the material is poured into the inner bin 3, and in the dumping process, the limiting motor 13 is required to push the limiting bar 17 to advance and mesh with the driving wheel 15, so that the rotation of the driving wheel 15 is limited, and the inclination angle of the material bin 18 is ensured.

Specifically, the ventilation structure includes: four chain shafts 22 with the same structure, four chain wheels 23 with the same structure, four fan blades 24 with the same structure, four pinch rollers 25 with the same structure, two chains 26 with the same structure, a driving motor 27, a driving wheel 28 and four grid plates 29 with the same structure.

Four pivots cartridge is in ventilation case bottom to symmetry each other, four sprocket 23 install respectively on four sprocket 22, four flabellum 24 suit is on four sprocket 22, driving motor 27's drive end is connected with chain wheel 28, two chain 26 suit are between every two sprocket 23, four pinch rollers 25 laminating is on four chain 26, action wheel 15 is located between two chain 26 to mesh with chain 26, ventilation case terminal surface just is located main tank bottom and has seted up four air outlets, main tank bottom has seted up the dress mouth of inlaying corresponding to the air outlet, grid board 29 inlays and inlays dress mouth inside, is provided with on the dress mouth and shelters from the structure.

When ventilation is required for the centralized hood 1, the driving motor is controlled to drive the chain wheel 28, the chain wheel 28 is meshed with the two chains 26, the chains 26 are limited by the pinch rollers 25 and are prevented from being separated from the driving wheel 15, when the chains 26 rotate, the four chain wheels 23 rotate, the chain shafts 22 inserted on the chain wheels 23 rotate, and the fan blades 24 positioned on the chain shafts 22 rotate, so that hot air in the centralized hood 1 is discharged.

Specifically, the temperature control structure includes: a temperature sensor 30, an air conditioner indoor unit 31, and an air conditioner outdoor unit 32;

the temperature sensor 30 is provided inside the focus cover 1, the air conditioner indoor unit 31 is provided inside the focus cover 1, and the air conditioner outdoor unit 32 is provided outside the focus cover 1.

When the temperature sensor 30 detects that the temperature inside the focus cover 1 is high or low, the temperature inside the focus cover 1 is changed by the air conditioner external unit 32 and the air conditioner internal unit 31.

Specifically, the moving structure includes: a linear module translation stage 33, a pair of guide rails, and a bearing seat;

The linear module translation stage 33 is arranged on the inner bottom surface of the outer bin 2, a pair of guide rails are respectively arranged on two sides of the linear module translation stage 33, the bearing seat is movably connected to the pair of guide rails, and the inner bin 3 is arranged on the bearing seat.

When the material in the inner bin 3 needs to be filled, the linear module translation stage 33 is controlled to drive the bearing seat, and the bearing seat realizes auxiliary movement through a pair of guide rails, and the inner bin 3 is arranged on the bearing seat, so that the inner bin 3 can move along with the bearing seat.

Specifically, the driving switch door 37 includes: the rotary motor 45, the rotary arm 34, the telescopic motor 35, the switch motor 36, four switch doors 37, four door body shafts 38 and four cross positioning lugs 39;

The outer wall of the outer bin 2 is provided with four square openings with the same structure, the switch door 37 is movably inserted into the outer wall of the switch door 37 through a door body, a door body shaft 38 penetrates through the end part of the outer bin 2, a cross positioning groove is formed in the end face of the door body shaft 38, a rotating motor 45 is arranged at the end part of the outer bin 2, a rotating arm 34 is connected with the driving end of the rotating motor 45, a telescopic motor 35 is connected with one end of the rotating arm 34, a switch motor 36 is connected with the telescopic end of the telescopic motor 35, a cross positioning lug 39 is connected with the driving end of the switch motor 36, and the cross positioning lug 39 can be inserted into the cross positioning groove.

When the specified door 37 needs to be opened, the rotating motor 45 is controlled to rotate the rotating arm 34 to the specified position, then the telescopic motor 35 is controlled to push the switch motor 36 to descend, the cross positioning projection 39 at the bottom of the switch motor 36 is inserted into the cross positioning groove on the door body shaft 38, and then the switch motor 36 drives the door body shaft 38, so that the door 37 on the door body shaft 38 is opened.

Specifically, the shielding structure includes: a cover plate 40, a second gear 41 and a second rack;

the ventilation box is arranged on the embedded opening, a sliding groove which extends downwards from the end parts of the two ventilation boxes and passes through the embedded opening is formed in the ventilation box, the cover plate 40 is movably inserted into the sliding groove, the second rack is connected with the cover plate 40, the second gear 41 is arranged on the upper end face of the ventilation box through the frame body, the second gear 41 is provided with a torsion motor 44, and the second gear 41 is meshed with the second rack.

In order to prevent inflow of external dust, the shielding structure is provided, and when ventilation is required, the torsion motor 44 is controlled to drive the second gear 41, the second gear 41 is engaged with the second rack, and the second rack is fixed to the cover 40, so that the cover 40 is lifted up to give way to the grid plate 29, and ventilation is performed.

Preferably, a fixing frame 42 is arranged between the rotary motor 45 and the end of the outer bin 2.

Preferably, a motor frame 43 is disposed between the switch motor 36 and the telescopic end of the telescopic motor 35.

Example 2

An environment-controllable storage process for metal powder storage comprises the following steps:

S1, firstly, placing metal powder in a feeding structure in an annular material changing unit, and controlling a displacement structure in the annular material changing unit to move the feeding structure to the vicinity of an inner bin 3 to be placed;

s2, controlling the driving switch door 37 to open a corresponding door body, controlling the moving structure to move the inner bin 3 out of the outer bin 2, controlling the feeding structure to start feeding action, and controlling the moving structure to retract the inner bin 3 after feeding is completed, and driving the switch door 37 to close;

And S3, carrying out ventilation operation in the ventilation structure pair on the centralized cover 1, monitoring the internal temperature in real time through the temperature control structure, and raising the internal temperature through the temperature control structure after the temperature is lower than a set value.

The above technical solution only represents the preferred technical solution of the present invention, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present invention, and the technical solution falls within the scope of the present invention.

Claims (9)

1. The storage equipment with the controllable environment for storing the metal powder comprises a centralized cover, an outer bin and four inner bins, and is characterized in that the outer bin is arranged at the central part of the centralized cover, the inner bin is arranged inside the outer bin, a ventilation structure and a temperature control structure are arranged inside the centralized cover, a partition plate is arranged inside the outer bin to divide the inside of the outer bin into four cavities with the same structure, the four inner bins are arranged inside the outer bin through a moving structure, a driving switch door is arranged at the end part of the outer bin, the outside of the outer bin is provided with an annular material changing unit inside the centralized cover;

The annular material changing unit comprises a displacement structure and a feeding structure;

The displacement structure comprises: the device comprises an annular sliding rail, an annular rack, a movable base, a torque motor and a first gear;

The annular sliding rail is arranged in the centralized cover and surrounds the outer bin, the annular rack is positioned on one side of the annular sliding rail, one end of the movable base is movably connected with the annular sliding rail, the other end of the movable base is fixedly provided with a torque motor, the driving end of the torque motor is connected with a gear, and the first gear is meshed with the annular rack;

the feeding structure comprises: the device comprises a mounting seat, a shaft bracket, a shaft body, a connecting piece, a limiting motor, a shaft body motor, a driving wheel, a driven wheel, a limiting strip and a material bin;

the mounting seat is arranged on the mobile machine seat, the shaft bracket is fixed on the mounting seat, the shaft body is inserted on the shaft bracket, the driven wheel is sleeved on the shaft body, the driving wheel is connected with the driving end of the limiting motor, the driving wheel is meshed with the driven wheel, one end of the connecting piece is connected with the shaft body, the other end of the connecting piece is connected with the material bin, the limiting motor is arranged on the mounting seat, the telescopic end of the limiting motor is connected with the limiting strip, and the limiting strip can be meshed with the driving wheel;

The material bin bottom is provided with a pipeline, the pipeline is provided with an electronic shutter, and the inner bin is provided with an outwards protruding inclined receiving groove.

2. The storage device of claim 1, wherein the ventilation structure comprises: four chain shafts with the same structure, four chain wheels with the same structure, four fan blades with the same structure, four pinch rollers with the same structure, two chains with the same structure, a driving motor, a driving wheel and four grid plates with the same structure;

The four chain shafts are inserted at the bottom of the ventilating box and are mutually symmetrical, the four chain wheels are respectively arranged on the four chain shafts, the four fan blades are sleeved on the four chain shafts, the driving end of the driving motor is connected with the chain wheels, the two chains are sleeved between every two chain wheels, the four pinch rollers are attached to the four chains, the driving wheel is located between the two chains and meshed with the chains, the end face of the ventilating box is located at the bottom of the main box, four air outlets are formed in the end face of the main box, the bottom of the main box is provided with an embedded opening corresponding to the air outlets, the grid plates are embedded inside the embedded opening, and the embedded opening is provided with a shielding structure.

3. The storage device of claim 1, wherein the temperature control structure comprises: temperature sensor, air conditioner inner unit and air conditioner outer unit;

The temperature sensor is arranged inside the centralized cover, the air conditioner indoor unit is arranged inside the centralized cover, and the air conditioner outdoor unit is arranged outside the centralized cover.

4. The storage device of claim 1, wherein the moving structure comprises: the linear module translation stage, a pair of guide rails and a bearing seat;

The linear module translation platform is arranged on the inner bottom surface of the outer bin, the pair of guide rails are respectively arranged on two sides of the linear module translation platform, the bearing seat is movably connected to the pair of guide rails, and the inner bin is arranged on the bearing seat.

5. The storage apparatus of claim 1, wherein the driving switch door comprises: the device comprises a rotating motor, a rotating arm, a telescopic motor, a switch motor, four switch doors, four door body shafts and four cross positioning convex blocks;

The outer wall of the outer bin is provided with four square openings with the same structure, the switch door is movably inserted into the outer wall of the switch door through the door body, the door body shaft penetrates through the end part of the outer bin, the end face of the door body shaft is provided with a cross positioning groove, the rotating motor is arranged at the end part of the outer bin, the rotating arm is connected with the driving end of the rotating motor, the telescopic motor is connected with one end of the rotating arm, the switch motor is connected with the telescopic end of the telescopic motor, the cross positioning protruding block is connected with the driving end of the switch motor, and the cross positioning protruding block can be inserted into the cross positioning groove.

6. The storage device of claim 2, wherein the shielding structure comprises: the cover plate, the second gear and the second rack;

The ventilation box is provided with an embedded opening, the ventilation box is provided with a sliding groove which extends downwards from the end parts of the two ventilation boxes and passes through the embedded opening, the cover plate is movably inserted into the sliding groove, the second rack is connected with the cover plate, the second gear is arranged on the upper end face of the ventilation box through the frame body and is provided with a torsion motor, and the second gear is meshed with the second rack.

7. The storage device with controllable metal powder storage environment according to claim 5, wherein a fixing frame is arranged between the rotating motor and the end part of the outer bin.

8. The storage device with controllable metal powder storage environment according to claim 5, wherein a motor frame is arranged between the switch motor and the telescopic end of the telescopic motor.

9. The environment-controllable storage process for metal powder storage according to claim 1, comprising the steps of:

s1, firstly, placing metal powder in a feeding structure in an annular material changing unit, and controlling a displacement structure in the annular material changing unit to move the feeding structure to the vicinity of an inner bin to be placed;

s2, controlling the driving switch door to open the corresponding door body, controlling the moving structure to move the inner bin out of the outer bin, controlling the feeding structure to start feeding action, and controlling the moving structure to retract the inner bin after feeding is completed, and driving the switch door to close;

and S3, carrying out ventilation operation in the ventilation structure pair on the centralized cover, monitoring the internal temperature in real time through the temperature control structure, and raising the internal temperature through the temperature control structure after the temperature is lower than a set value.