Metal powder 3D printing equipment

Abstract

The present invention relates to a metal powder 3D printing device applied to the field of 3D printing, comprising a device shell, wherein the inner space of the dust cover is divided into a processing chamber and a recovery chamber by a movable partition; further comprising a dumping recovery mechanism and an intelligent recycler; the dumping recovery mechanism comprises a recovery trough opened at the bottom of the recovery chamber, and a limit clamping plate installed on the recovery trough, a plurality of screening discs are arranged in the middle of the main shaft, and the top of the recovery trough is installed on the output shaft of a driving motor through a gear set; a recovery module and a reminder module are arranged on the intelligent recycler, a vibration motor is installed on the main shaft, and a pressure sensor is installed at the bottom of the vibration motor. By adopting the above structure, the metal powder dumped into the recovery trough is automatically separated by the intelligent recycler, and the separation situation is automatically judged. In the screening and separation process, the dispersion of metal powder into the air is reduced, the pollution to the processing environment is reduced, and the recovery efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a metal powder 3D printing device. Background Art

[0002] 3D printing technology is a technology that can transform three-dimensional models into three-dimensional objects in the shortest time. It is not restricted by traditional processing. As long as the three-dimensional model can be designed, it can be produced in the shortest time. It is used in medical, aerospace and other fields. In the field of 3D printing technology, metal 3D printing is the most widely used printing, with the advantages of high material utilization rate, wide range of applicable materials, short production cycle, and the ability to manufacture parts with complex shapes. It has great advantages in the structural forming of multiple curved small-diameter pipelines, dense oblique holes, dense blind holes and complex cavities.

[0003] In the prior art, the product is printed on a movable platform, which is gradually moved downward, and the product is sintered layer by layer on the movable platform through a 3D printing head assembly. After the product with a complex structure is printed and formed, a lot of metal powder will remain inside the product, and due to the structural characteristics, these residual powders are difficult to clean; therefore, an air gun is used to blow and collect the powder manually, or a vibration platform is used to shake out and collect the metal powder in the product. The collected metal powders can be reused, but after the metal powder is sintered by the 3D printing assembly, some large particle structures formed after sintering will remain in the recycled metal powder, which needs to be screened. The traditional screening method is to pour a large amount of metal powder onto the screening mechanism, and then quickly shake and screen the metal powder through the vibrating screening mechanism. Although the screening efficiency can be improved, the metal powder will be quickly diffused into the air during the entire vibration screening process, polluting the processing environment. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the traditional screening method is to pour a large amount of metal powder onto the screening mechanism, and then quickly shake and screen the metal powder through the vibrating screening mechanism. Although it can improve the screening efficiency, it will cause the metal powder to quickly diffuse into the air during the entire vibration screening process, polluting the processing environment.

[0005] In order to solve the above problems, the present invention provides a metal powder 3D printing device, including a device housing, a dust cover is provided on the device housing, and also includes a dumping recovery mechanism and an intelligent recoverer.

[0006] The dust cover is provided with a movable partition movably connected thereto, and the inner space of the dust cover is divided into a processing chamber and a recovery chamber by the movable partition;

[0007] The dumping recovery mechanism includes a recovery tank provided at the bottom of the recovery chamber, and a limit card plate installed on the recovery tank. The middle of the recovery tank is vertically rotatably connected to a main shaft. A plurality of screening discs are provided in the middle of the main shaft. The screening discs are provided with a plurality of screening holes. A screening channel corresponding to the outer ring of the screening disc is provided on the equipment housing. The top of the recovery tank is installed on the output shaft of the driving motor 1 through a gear set.

[0008] The intelligent recycler is provided with a recycling module and a reminder module. The recycling module is electrically connected to the reminder module and the driving motor 1 respectively. The recycling module is also electrically connected to a pressure sensor and a vibration motor 1. The vibration motor 1 is installed on the main shaft, and the pressure sensor is installed at the bottom of the vibration motor 1.

[0009] In the above-mentioned metal powder 3D printing equipment, an intelligent recycler is used to automatically separate the metal powder dumped into the recovery tank, and the metal powder that is easily diffused into the air slowly enters the bottom of the sieve plate for collection, and automatically judges the separation situation, and separates the large-particle metal powder on the sieve plate into the sieve channel for collection. During the sieving and separation process, the dispersion of metal powder into the air is reduced, thereby improving the recovery efficiency.

[0010] As a further improvement of the present application, the intelligent recycler is also provided with a dumping module electrically connected to the recycling module, the dumping module is electrically connected to drive motor 2, a proximity sensor and an electromagnet, the output end of drive motor 2 is installed with a limit card plate, and the proximity sensor and the electromagnet are both installed on the limit card plate.

[0011] As a further improvement of the present application, the middle part of the screening disc is concave, a screening chamber is provided at the bottom of each screening channel, the bottom of the recovery trough is inclined, and a recovery chamber is provided at the lower end of the bottom of the recovery trough.

[0012] As a further improvement of the present application, a transfer push plate that reciprocates between the processing chamber and the recovery chamber is provided on the equipment housing to drive the movable platform to reciprocate between the processing chamber and the recovery chamber.

[0013] As another improvement of the present application, it also includes a circulation recovery mechanism, which includes a recovery air inlet pipe and a disturbance air outlet pipe both installed in the recovery chamber, and a Y-shaped channel connected to the top of the recovery chamber, the two openings at the upper end of the Y-shaped channel are respectively connected to the recovery air inlet pipe and the disturbance air outlet pipe, a dustproof net is installed in the disturbance air outlet pipe, and a circulation motor is installed on the disturbance air outlet pipe.

[0014] As another improved supplement of the present application, a conductive top rod is installed in the middle of the disturbance air outlet duct, the lower end of the conductive top rod is abutted against the middle of the dustproof net, and the dustproof net has a V-shaped structure; a vibration motor 2 is installed on the top of the conductive top rod.

[0015] As another improved supplement of the present application, a circulation recycling module is also provided on the intelligent recycler, and the circulation recycling module is electrically connected to the dumping module, the reminder module, the circulation motor and the vibration motor 2 respectively. The circulation recycling module is also electrically connected to air pressure sensor 1 and air pressure sensor 2. Air pressure sensor 1 is installed on the inner wall of the recovery air inlet pipe, and air pressure sensor 2 is installed on the inner wall of the circulation motor, and air pressure sensor 2 is located on the downstream side of the dustproof net.

[0016] As another improved supplement of the present application, a one-way valve is installed between the Y-shaped channel and the recovery chamber, a plurality of disturbance plates are rotatably connected to the opening of the disturbance air outlet duct, and a plurality of reflux grooves are provided at the opening of the recovery air inlet duct.

[0017] To summarize, the present application can automatically separate the metal powder dumped into the recovery tank through the intelligent recoverer, and the two-separation technology can gradually separate the fine metal powder and the large-particle metal powder, and use centrifugal force to separate and collect the metal powder with larger particles, thereby reducing the situation where the metal powder is easily diffused into the air during the screening and collection process, automatically judging the stacking state of the metal powder recovered in the recovery tank, performing accurate and efficient separation and recovery operations, and reducing pollution to the working environment, thereby realizing automated and intelligent separation and recovery operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of 3D printing equipment according to the first and second embodiments of the present application;

[0019] Figure 2 This is an internal schematic diagram of the first and second embodiments of the present application. Figure 1 ;

[0020] Figure 3 This is an internal schematic diagram of the first and second embodiments of the present application. Figure 2 ;

[0021] Figure 4 A cross-sectional view of the recovery chamber of the first and second embodiments of the present application;

[0022] Figure 5 This is a control principle block diagram of the intelligent recycler according to the first embodiment of the present application;

[0023] Figure 6 This is a schematic diagram of the structure of the recycling recovery mechanism in the recovery chamber of the first and second embodiments of the present application;

[0024] Figure 7 For the first and second embodiments of this application Figure 6 Enlarged view of point A in the middle;

[0025] Figure 8This is a block diagram of the control principle of the intelligent recycler according to the second embodiment of the present application.

[0026] Description of the numbers in the figure:

[0027] 1. Equipment housing; 2. Dust cover; 3. Movable partition; 4. Processing chamber; 5. Recovery chamber; 6. Movable platform; 7. Intelligent recycler; 8. Reminder module; 9. Transfer push plate; 10. Limit card plate; 11. Proximity sensor; 12. Electromagnet; 13. Recovery air inlet pipe; 14. Recovery chamber; 15. Screening chamber; 16. Disturbance air outlet pipe; 17. Drive motor 2; 18. Drive motor 1; 19. Recovery trough; 20. Spindle; 21. Screening disc; 22. Screening channel; 23. Pressure sensor; 24. Vibration motor 1; 25. Y-type channel; 26. Circulation motor; 27. Air pressure sensor 1; 28. Air pressure sensor 2; 29. ​​Dustproof net; 30. Conductive push rod; 31. Vibration motor 2. DETAILED DESCRIPTION

[0028] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0029] The first implementation method:

[0030] Figure 1-Figure 5 A metal powder 3D printing device is shown, including a device housing 1, a dumping and recovery mechanism and an intelligent recycler 7. A dust cover 2 is provided on the device housing 1, and a movable partition 3 movably connected to the dust cover 2 is penetrated by the dust cover 2. The internal space of the dust cover 2 is divided into a processing chamber 4 and a recovery chamber 5 by the movable partition 3. The product is printed by a 3D printing component located in the processing chamber 4, and the printed product is moved to the recovery chamber 5 by a movable platform 6, so that the metal powder is automatically recycled.

[0031] In addition, the dumping and recovery mechanism includes a recovery trough 19 provided at the bottom of the recovery chamber 5, and a limiting card plate 10 installed on the recovery trough 19. The middle part of the recovery trough 19 is vertically rotatably connected to the main shaft 20. A plurality of screening discs 21 are arranged in the middle part of the main shaft 20. The screening discs 21 are provided with a plurality of screening holes. The equipment housing 1 is provided with a screening channel 22 corresponding to the outer ring of the screening disc 21. The top of the recovery trough 19 is installed on the output shaft of the driving motor 18 through a gear set. The movable platform 6 is raised to the platform of the equipment housing 1, and the movable partition 3 is controlled to rise. At this time, the movable platform 6 is pushed to engage with the limiting card plate 10, and then the movable partition plate 3 is lowered to realize the transfer of the movable platform 6 to the recovery chamber 5. The movable platform 6 is driven to flip by controlling the limiting card plate 10. At this time, the metal powder in the product will gradually fall into the recovery trough 19 at the bottom. The movable platform 6 can be flipped continuously for multiple times to remove the metal powder in the product. The metal powder is discharged, and the 3D printed products will be fixed on the movable platform 6, and need to be divided by external force or cutting equipment. Therefore, when the movable platform 6 is turned over, the products on the movable platform 6 can be prevented from falling and being damaged; the metal powder falls onto the screening plate 21 and is gradually screened through a number of screening holes on the screening plate 21. Qualified metal powder will enter the bottom of the recovery tank 19 for recovery, and the metal powder with larger particles will be screened and blocked by the screening plate 21, and the metal powder that is easy to fly will be quickly screened to the bottom of the recovery tank 19 for recycling. The metal powder with larger particles will be screened on the screening plate 21, and then the screening plate 21 will be driven to rotate by the main shaft 20, and the centrifugal force generated will be used to throw the separated metal powder with larger particles into the screening channel 22 of the outer circle for recovery. During the screening and separation process, the dispersion of metal powder into the air is reduced, thereby improving the recovery efficiency.

[0032] It is worth mentioning that the intelligent recycler 7 is provided with a recycling module and a reminder module 8. The recycling module is electrically connected to the reminder module 8 and the driving motor 18 respectively. The recycling module is also electrically connected to a pressure sensor 23 and a vibration motor 24. The vibration motor 24 is installed on the main shaft 20, and the pressure sensor 23 is installed at the bottom of the vibration motor 24.

[0033] After the movable platform 6 with the product and metal powder is docked with the limiting card plate 10, the movable platform 6 is controlled to flip through the limiting card plate 10. At this time, a large amount of metal powder enters the recovery tank 19, and the metal powder falls and accumulates on the screening plate 21. At this time, the pressure sensor 23 located at the bottom of the main shaft 20 will detect the gravity data and transmit it to the recovery module in real time. After receiving the gravity data in real time, the recovery module determines that metal powder is accumulated on the screening plate 21. At this time, the recovery module will control the vibration motor 24 to work, and the vibration motor 24 will emit a slight vibration and drive the main shaft 20 and the screening plate 21 to vibrate. At this time, the metal powder on the screening plate 21 will gradually fall through the through hole, and the large particles of metal powder will be screened onto the screening plate 21. When the fine metal powder falls to the bottom of the recovery tank 19, the recovery module will receive the gravity data sent by the pressure sensor 23 in real time. After the force data variation range becomes smaller (smaller than the gravity data variation range detected by the preset pressure sensor 23 in the recovery module), it is determined that the fine metal powder and the large-particle metal powder accumulated on the screening disk 21 are separated. At this time, the recovery module sends a working signal to the drive motor 18, and the drive motor 18 drives the main shaft 20 to rotate, and synchronously drives the screening disk 21 to rotate. At this time, the centrifugal force generated is used to throw the separated metal powder with larger particles into the screening channel 22 of the outer circle. The two-time separation technology gradually separates the fine metal powder and the large-particle metal powder, and separates and collects the metal powder with larger particles by centrifugal force, thereby reducing the situation where the metal powder is easily diffused into the air during the screening and collection process. When the screening and recovery work is completed, the recovery module will send a reminder signal to the reminder module 8, and the reminder module 8 will send an audio and visual reminder that the screening and recovery is completed.

[0034] In addition, the intelligent recycler 7 is also provided with a dumping module electrically connected to the recycling module, the dumping module is electrically connected to a driving motor 2 17, a proximity sensor 11 and an electromagnet 12, the output end of the driving motor 2 17 is installed with a limit card plate 10, and the proximity sensor 11 and the electromagnet 12 are both installed on the limit card plate 10. When the movable platform 6 moves to the limit card plate 10, the proximity sensor 11 detects that the movable platform 6 is connected to the limit card plate 10, and sends the detection signal to the dumping module. At this time, the dumping module sends a signal to the electromagnet 12. The working signal is sent, the electromagnet 12 works and produces a magnetic attraction on the movable platform 6, stably fixing the movable platform 6 on the limit card plate 10, and at the same time, the dumping module sends a working signal to the drive motor 17, and controls the drive motor 17 to drive the limit card plate 10 to slowly flip, and dump the metal powder in the product into the recovery tank 19, and when the dumping module sends a working signal to the drive motor 17, the dumping module sends a recovery signal to the recovery module, and the recovery module performs metal powder recovery and screening operations after receiving the recovery signal.

[0035] In this embodiment, the middle part of the screening disc 21 is concavely arranged, so that a large amount of metal powder entering the screening disc 21 is accumulated on the screening disc 21, reducing the sliding to the outer ring of the screening disc 21. The multi-layer screening disc 21 can screen large-particle metal powder into different particle sizes, and also reduce the situation where the metal powder that is gradually screened and falls diffuses into the recovery chamber 5 to pollute the air and the processing environment. A screening chamber 15 is arranged at the bottom of each screening channel 22. Large-particle metal powder enters the screening channel 22 through centrifugal force and is collected and processed by the screening chamber 15. The bottom of the recovery trough 19 is inclined, and a recovery chamber 14 is arranged at the lower end of the bottom of the recovery trough 19. The qualified metal powder enters the bottom of the recovery trough 19 and is collected by the recovery chamber 14 on one side. The metal powder in the recovery chamber 14 can be directly reused.

[0036] A transfer push plate 9 is provided on the equipment housing 1 for reciprocating movement between the processing chamber 4 and the recovery chamber 5, so as to drive the movable platform 6 to reciprocate between the processing chamber 4 and the recovery chamber 5. The movable platform 6 can be driven to move in the processing chamber 4 and the recovery chamber 5 by controlling the transfer push plate 9, and the movable platform 6 can be quickly transferred to a designated position, so as to facilitate rapid processing of metal powder in the product.

[0037] The second implementation method:

[0038] Figure 6-Figure 8 As shown, different from the first embodiment, it also includes a circulation recovery mechanism, which includes a recovery air inlet pipe 13 and a disturbance air outlet pipe 16 both installed in the recovery chamber 5, and a Y-shaped channel 25 connected to the top of the recovery chamber 14, and the two openings at the upper end of the Y-shaped channel 25 are respectively connected to the recovery air inlet pipe 13 and the disturbance air outlet pipe 16, a dustproof net 29 is installed in the disturbance air outlet pipe 16, and a circulation motor 26 is installed on the disturbance air outlet pipe 16. The disturbance air outlet pipe 16 is vertically arranged, so that the filtered metal powder is gradually dropped into the recovery chamber 14 at the bottom by gravity, and the circulation motor 26 works to make The gas enters through the opening of the recovery air inlet pipe 13 and is discharged through the opening of the disturbance air outlet pipe 16, and the air in the recovery chamber 5 is circulated and processed. When pouring and screening the metal powder in the product, it is difficult to avoid that some metal powder will fly into the air. At this time, the air in the recovery chamber 5 is circulated and filtered, and the air sucked in through the recovery air inlet pipe 13 enters the Y-shaped channel 25 and is filtered by the dustproof net 29 in the circulation motor 26. The filtered air is discharged through the disturbance air outlet pipe 16, so that the metal powder in the air can be circulated and filtered, and the filtered metal powder will fall into the recovery chamber 14 at the bottom for recovery.

[0039] In addition, a conductive top rod 30 is installed in the middle of the disturbance air outlet duct 16, and the lower end of the conductive top rod 30 is in contact with the middle of the dustproof net 29, so that the dustproof net 29 has a V-shaped structure; a vibration motor 231 is installed on the top of the conductive top rod 30. When the circulating air is filtered through the dustproof net 29, part of the metal powder will stick to the dustproof net 29, gradually blocking the mesh of the dustproof net 29, affecting the filtering efficiency of the dustproof net 29. At this time, the vibration motor 231 drives the conductive top rod 30 to vibrate, thereby driving the dustproof net 29 to shake quickly, shaking off the metal powder on the dustproof net 29 and dropping it into the recovery chamber 14 at the bottom, so as to quickly clean the metal powder blocked on the dustproof net 29.

[0040] In this embodiment, the intelligent recycler 7 is also provided with a recycling module, which is electrically connected to the dumping module, the reminder module 8, the circulation motor 26 and the vibration motor 2 31 respectively, and the recycling module is also electrically connected to the air pressure sensor 1 27 and the air pressure sensor 2 28. The air pressure sensor 1 27 is installed on the inner wall of the recycling air inlet pipe 13, and the air pressure sensor 2 28 is installed on the inner wall of the circulation motor 26, and the air pressure sensor 2 28 is located on the downstream side of the dustproof net 29. When the dumping module controls the driving motor 2 17 to work, a circulation signal is sent to the recycling module at the same time. After receiving the circulation signal, the recycling module controls the circulation motor 26 to work. At this time, the air in the recycling chamber 5 is recovered. The air enters through the recovery air inlet pipe 13 and is discharged through the disturbance air outlet pipe 16. During this process, the air entering the disturbance air outlet pipe 16 will be filtered by the dustproof net 29; at this time, the air pressure sensor 1 27 located in the recovery air inlet pipe 13 and the air pressure sensor 2 28 located in the disturbance air outlet pipe 16 will send the detected air pressure data to the circulation recovery module in real time. When the dustproof net 29 is blocked, the air pressure data detected by the air pressure sensor 2 28 decreases, and the pressure difference between the air pressure sensor 2 28 and the air pressure sensor 1 27 gradually increases. When the pressure data received by the circulation recovery module from the air pressure sensor 1 27 and the air pressure sensor 2 28 exceeds the preset value (circulation recovery module), the pressure difference is greater than the preset value. The module is preset with pressure data of air pressure sensor 1 27 and air pressure sensor 2 28 when the dust screen 29 is blocked (pressure value), at this time, the recycling module controls the circulation motor 26 to stop working for a specified time, and controls the vibration motor 2 31 to work for a specified time, the vibration motor 2 31 drives the conduction push rod 30 to vibrate and synchronously drives the dust screen 29 to shake, and the metal powder on the dust screen 29 is shaken off, and the metal powder falls into the recovery chamber 14 at the bottom through the action of gravity, and then the recycling module controls the circulation motor 26 to work and controls the vibration motor 2 31 to stop working, and continues the circulation cleaning work. At this time, the recycling module receives the air pressure sensor 1 27 and air pressure sensor 28. Whether the pressure data fed back by sensor 28 returns to the normal value, verify whether the metal powder on the dustproof net 29 is cleaned up. When the recycling module determines that the pressure difference data returns to the normal value, the blockage cleaning is completed. At this time, the recycling module sends a reminder signal to the reminder module 8, and the reminder module 8 sends an audio-visual signal that the dustproof net 29 is cleaned up. When the recycling module determines that the pressure difference data has not returned to the normal value, the above cleaning process is repeated, and it is verified again whether the dustproof net 29 is cleaned up. The purpose of automatic judgment of blockage and automatic cleaning can be achieved. The cleaned dustproof net 29 is verified to achieve a better recycling cleaning effect on the metal powder in the air.

[0041] In addition, a one-way valve is installed between the Y-shaped channel 25 and the recovery chamber 14, so that the gas enters through the recovery air inlet pipe 13 and is discharged through the disturbance air outlet pipe 16, forming a circulation effect. A plurality of disturbance plates are rotatably connected to the opening of the disturbance air outlet pipe 16. When the filtered gas is discharged through the outlet of the disturbance air outlet pipe 16, the gas will blow the disturbance plate and drive it to swing, thereby increasing the disturbance range of the air discharged from the opening of the disturbance air outlet pipe 16 and increasing the flow range of the air in the recovery chamber 5. A plurality of reflux grooves are provided at the opening of the recovery air inlet pipe 13, thereby increasing the range of the opening of the recovery air inlet pipe 13, increasing the suction range of the recovery air inlet pipe 13, and quickly absorbing the disturbed air in the recovery chamber 5, thereby increasing the purification range of the air in the recovery chamber 5.

[0042] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A metal powder 3D printing device, comprising a device housing, a dust cover is provided on the device housing, characterized in that: It also includes a dump recovery mechanism and an intelligent recycler. The dust cover is provided with a movable partition movably connected thereto, and the inner space of the dust cover is divided into a processing chamber and a recovery chamber by the movable partition; The dumping recovery mechanism includes a recovery tank provided at the bottom of the recovery chamber, and a limit card plate installed on the recovery tank. The middle of the recovery tank is vertically rotatably connected to a main shaft. A plurality of screening discs are provided in the middle of the main shaft. The screening discs are provided with a plurality of screening holes. A screening channel corresponding to the outer ring of the screening disc is provided on the equipment housing. The top of the recovery tank is installed on the output shaft of the driving motor 1 through a gear set. The intelligent recycler is provided with a recycling module and a reminder module, the recycling module is electrically connected to the reminder module and the driving motor 1 respectively, the recycling module is also electrically connected to a pressure sensor and a vibration motor 1, the vibration motor 1 is installed on the main shaft, and the pressure sensor is installed at the bottom of the vibration motor 1; It also includes a circulation recovery mechanism, which includes a recovery air inlet pipe and a disturbance air outlet pipe both installed in the recovery chamber, and a Y-shaped channel connected to the top of the recovery chamber, two openings at the upper end of the Y-shaped channel are respectively connected to the recovery air inlet pipe and the disturbance air outlet pipe, a dustproof net is installed in the disturbance air outlet pipe, and a circulation motor is installed on the disturbance air outlet pipe; A conductive top rod is installed in the middle of the disturbance air outlet duct, the lower end of the conductive top rod abuts against the middle of the dustproof net, and the dustproof net is in a V-shaped structure; a vibration motor 2 is installed on the top of the conductive top rod; The intelligent recycler is also provided with a circulation recycling module, which is electrically connected to the dumping module, the reminder module, the circulation motor and the vibration motor 2 respectively. The circulation recycling module is also electrically connected to air pressure sensor 1 and air pressure sensor 2. Air pressure sensor 1 is installed on the inner wall of the recycling air inlet pipe, and air pressure sensor 2 is installed on the inner wall of the circulation motor, and air pressure sensor 2 is located on the downstream side of the dustproof net.

2. A metal powder 3D printing device according to claim 1, characterized in that: The intelligent recycler is also provided with a dumping module electrically connected to the recycling module. The dumping module is electrically connected to a second drive motor, a proximity sensor and an electromagnet. The output end of the second drive motor is installed with a limit card plate, and the proximity sensor and the electromagnet are both installed on the limit card plate.

3. A metal powder 3D printing device according to claim 2, characterized in that: The middle part of the screening disc is concave, a screening chamber is arranged at the bottom of each screening channel, the bottom of the recovery trough is inclined, and a recovery chamber is arranged at the lower end of the bottom of the recovery trough.

4. A metal powder 3D printing device according to claim 1, characterized in that: A transfer push plate which reciprocates between the processing chamber and the recovery chamber is arranged on the equipment shell to drive the movable platform to reciprocate between the processing chamber and the recovery chamber.

5. The metal powder 3D printing device according to claim 1, characterized in that: A one-way valve is installed between the Y-shaped channel and the recovery chamber, a plurality of disturbance plates are rotatably connected to the opening of the disturbance air outlet pipe, and a plurality of reflux grooves are opened at the opening of the recovery air inlet pipe.

Images