A smart powder feeding device for a laser powder sintering molding machine

Abstract

This invention discloses an intelligent powder feeding device for a laser powder sintering molding machine in the field of workpiece manufacturing technology. It includes a base plate, with a first support frame and a second support frame fixedly connected to the upper surface of the base plate. A storage tank is fixedly connected to the upper surface of the first support frame, and a molding machine is fixedly connected to the surface of the second support frame. A moving mechanism drives a feeding frame to move and add powder into the molding machine, while simultaneously driving a feeding mechanism to evenly add powder into the feeding frame and remove any clumps that have been screened out. A driving mechanism is provided on the surface of a sliding frame, which drives the feeding mechanism and the moving mechanism. This device has a simple structure and is easy to use. By adding powder through the spreading placement of the feeding frame, it effectively avoids the possibility of the powder touching the processed material, ensuring the accuracy of the processed material. Simultaneously, the added powder is more uniform, and it can automatically screen out solid particles within the powder.

Description

Technical Field

[0001] This invention relates to the field of workpiece manufacturing technology, specifically to an intelligent powder feeding device for a laser powder sintering molding machine. Background Technology

[0002] SLS (Sequencing Laser Sintering) is a rapid prototyping process that involves spreading powdered material onto the surface of a pre-formed part and smoothing it. A high-intensity CO2 laser scans the newly laid layer to create the part's cross-section. Under high-intensity laser irradiation, the powder is sintered together to form the part's cross-section, which then connects to the pre-formed portion below. Once one cross-section is sintered, a new layer of powder is laid, and the next layer is selectively sintered. In short, SLS technology uses lasers to selectively sinter solid powder in layers, creating layers of solidified material to form the desired shape. The entire process includes CAD model creation and data processing, powder spreading, sintering, and post-processing.

[0003] After a single sintering of powder, existing laser systems typically leave some powder on the surface of the forming machine. A scraper is then used to push the powder into the forming agent to cover the sintered part. To ensure the precision of the part processing, the scraper needs to level the powder inside the forming machine. However, excess powder needs to be recycled for future use after part processing. During laser sintering, scrap material is easily formed, resulting in the recycled powder containing solid particles. Furthermore, the powder may clump after prolonged use. When the scraper pushes the powder into the forming machine, if the added powder contains solid particles, these particles may come into contact with the part being processed, causing it to shift and affecting the processing precision. Additionally, the powder may move laterally as it is scraped, resulting in uneven powder distribution. Therefore, the scraper needs to scrape back and forth several times before sintering can continue. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent powder feeding device for a laser powder sintering molding machine, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent powder feeding device for a laser powder sintering molding machine, comprising a base plate, wherein a first support frame and a second support frame are fixedly connected to the upper surface of the base plate, a storage tank is fixedly connected to the upper surface of the first support frame and a molding machine is fixedly connected to the surface of the second support frame; a first fixing frame is symmetrically fixedly connected to the front and rear sides of the upper surface of the second support frame and a second fixing frame is symmetrically fixedly connected to the left and right sides of the upper surface of the second support frame; a feeding frame is provided on the upper side of the molding machine, and the feeding frame is slidably connected to the first fixing frames on the front and rear sides; A sliding frame is provided at the front of the second support frame, and the sliding frame is slidably connected to the second fixed frames on the left and right sides; a feeding mechanism is provided on the surface of the storage tank, which is used to add powder to the feeding frame and also to screen out lumps in the added powder; a moving mechanism is provided on the surface of the sliding frame, which is used to drive the feeding frame to move and add powder into the molding machine, while simultaneously driving the feeding mechanism to evenly add powder to the feeding frame and clean up the screened lumps; a driving mechanism is provided on the surface of the sliding frame, which is used to drive the feeding mechanism and the moving mechanism to operate.

[0006] The feeding mechanism includes a feeding cylinder and a hose; the upper end of the hose is connected to the storage tank and the lower end of the hose is connected to the rear side of the surface of the feeding cylinder; the front end of the feeding cylinder is located inside the feeding frame and the feeding cylinder is slidably connected to the feeding frame; a sieve cylinder is fixedly connected to the front surface of the feeding cylinder, and the front end of the sieve cylinder is rotatably connected to a collecting plate; sliding rods are symmetrically fixedly connected to the left and right sides inside the feeding frame, and the collecting plate is slidably connected to the sliding rods on the left and right sides; an auger is provided inside the feeding cylinder, and the front end of the auger is rotatably connected to the feeding cylinder; the rear end of the auger is located in front of the collecting plate; the feeding cylinder is slidably connected to the sliding frame.

[0007] The driving mechanism includes a motor, which is a dual-shaft motor with its output shaft rear end fixedly connected to an auger; a first gear is fixedly connected to the front end of the motor output shaft; a connecting plate is fixedly connected to the surface of the feeding cylinder, the connecting plate is fixedly connected to the motor, and a first pulley and a second pulley are rotatably connected to the front surface of the connecting plate; a belt is provided on the surface of the first pulley, and the belt meshes with both the first pulley and the second pulley; the first gear is coaxially fixedly connected to the first pulley.

[0008] The moving mechanism includes a lifting frame, with threaded rods symmetrically threaded on both sides of the lifting frame. The threaded rods are self-locking and rotatably connected to the left and right sides of the sliding frame, respectively. First racks are symmetrically fixedly connected to the surface of the lifting frame on both sides of the first gear, with the first racks on both sides alternately meshing with the first gear. The lifting frame slides with a connecting plate. The surface of the sliding frame is provided with a lifting mechanism, which drives the lifting frame to descend when the motor drives the connecting plate to slide from the left to the rightmost position, and drives the lifting frame to rise when the motor drives the connecting plate to slide from the right to the leftmost position.

[0009] The threaded rod is symmetrically fixedly connected to the upper and lower ends with second gears. Synchronous pulleys are fixedly connected to the upper end of the upper second gear and the bottom end of the lower second gear. A synchronous belt is provided on the surface of the synchronous pulley, and the synchronous belt meshes with the synchronous pulleys on both the left and right sides simultaneously. A second rack is slidably connected to the surface of the sliding frame at a position corresponding to the second gear, and the second rack meshes with the second gear. The two upper second racks are respectively located to the left rear of the upper left second gear and to the right rear of the upper right second gear. The two lower second racks are respectively located to the right front of the lower left second gear and to the left front of the lower right second gear. First push rods are fixedly connected to the front ends of both the lower left and upper right second racks. A second push rod is fixedly connected to the front surface of the connecting plate, and the second push rod alternately engages with the two first push rods.

[0010] A reciprocating lead screw is fixedly connected to the front surface of the feeding frame, and the second pulley is threadedly engaged with the reciprocating lead screw; the diameter of the first pulley is larger than the diameter of the second pulley.

[0011] The rear surface of the feeding frame is provided with a discharge port located at the rear of the feeding cylinder, and the rear end of the slide rod is bent downward at the discharge port.

[0012] The feeding frame has two sets of fixing plates inside, which are distributed in the middle and bottom positions of the feeding frame. Each set of fixing plates includes two fixing plates, which are symmetrically distributed on the left and right sides of the feeding frame and are fixedly connected to the feeding frame. A sealing plate is provided inside the fixing plate, and the sealing plate is slidably connected to the fixing plate. Two cylinders are fixedly connected to the surface of the feeding frame at positions corresponding to each sealing plate, and the output ends of the two cylinders are fixedly connected to the sealing plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. When powder needs to be added to the molding machine, this invention first activates the drive mechanism, which in turn drives the feeding mechanism and the moving mechanism. Activating the feeding mechanism adds powder from the storage bin to the feeding frame. While the feeding mechanism adds powder to the feeding frame, the moving mechanism drives the feeding frame to move left or right. Since the feeding frame already contains added powder, it evenly spreads the powder across the molding machine surface during movement. Simultaneously, the moving mechanism drives the feeding cylinder to evenly add powder to the feeding frame, ensuring a uniform powder distribution across the molding machine surface. When adding powder through the feeding cylinder, the cylinder filters out and removes any solid particles contained in the powder. This device has a simple structure and is easy to use. Adding powder via the feeding frame effectively avoids contact with the processing material, ensuring the accuracy of the processed material. It also ensures more uniform powder distribution and automatically filters out solid particles from the powder.

[0015] 2. This invention uses a motor to drive the first and second pulleys to rotate. The second pulley, under the action of a reciprocating screw, causes the connecting plate to move backward, which in turn causes the sliding frame and the feeding cylinder to slide backward. The feeding cylinder moves backward while adding powder, thus achieving the effect of uniformly adding powder into the feeding frame. When the connecting plate moves forward under the action of the reciprocating screw, the first push rod on the surface of the connecting plate will engage with the second push rod on the right side, pushing the second push rod forward. The second push rod, through a second rack, drives the second gear to rotate. Under the action of the synchronous belt and the synchronous pulleys on both sides, the threaded rods on both sides rotate simultaneously, thereby driving the lifting frame to move downward, causing the first rack on the upper side to mesh with the first gear. This allows the feeding frame to move left and right reciprocally to add powder without repeatedly driving the motor to rotate forward and backward, effectively reducing motor wear. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the rear view structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the sliding frame in this invention;

[0020] Figure 5 This is a schematic diagram of the moving mechanism in this invention;

[0021] Figure 6This is a schematic diagram of the drive mechanism in this invention;

[0022] Figure 7 for Figure 6 A magnified structural diagram of A in the middle;

[0023] Figure 8 This is a schematic diagram of the feeding frame in this invention.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Base plate; 2. First support frame; 3. Second support frame; 4. Storage tank; 5. Molding machine; 6. First fixed frame; 7. Second fixed frame; 8. Feeding frame; 9. Sliding frame; 10. Feeding cylinder; 11. Hose; 12. Screen cylinder; 13. Collecting plate; 14. Sliding rod; 15. Screw; 16. Motor; 17. First gear; 18. Connecting plate; 19. First pulley; 20. Second pulley; 21. Belt; 22. Lifting frame; 23. Threaded rod; 24. First rack; 25. Second gear; 26. Synchronous pulley; 27. Synchronous belt; 28. Second rack; 29. ​​First push rod; 30. Second push rod; 31. Reciprocating screw; 32. Discharge port; 33. Fixed plate; 34. Sealing plate; 35. Cylinder. Detailed Implementation

[0026] Please see Figures 1-8 This invention provides a technical solution: an intelligent powder feeding device for a laser powder sintering molding machine, comprising a base plate 1, a first support frame 2 and a second support frame 3 fixedly connected to the upper surface of the base plate 1, a storage tank 4 fixedly connected to the upper surface of the first support frame 2 and a molding machine 5 fixedly connected to the surface of the second support frame 3; first fixing frames 6 are symmetrically fixedly connected to the front and rear sides of the upper surface of the second support frame 3 and second fixing frames 7 are symmetrically fixedly connected to the left and right sides of the upper surface of the second support frame 3; a feeding frame 8 is provided on the upper side of the molding machine 5, and the feeding frame 8 is slidably connected to the first fixing frames 6 on the front and rear sides. The second support frame 3 has a sliding frame 9 at its front side, which is slidably connected to the second fixed frames 7 on the left and right sides. The storage tank 4 has a feeding mechanism on its surface, which is used to add powder to the feeding frame 8 and also to screen out any lumps in the added powder. The sliding frame 9 has a moving mechanism on its surface, which is used to drive the feeding frame 8 to move and add powder into the molding machine 5, while also driving the feeding mechanism to evenly add the powder to the feeding frame 8 and clean up any lumps that have been screened out. The sliding frame 9 has a driving mechanism on its surface, which is used to drive the feeding mechanism and the moving mechanism to operate.

[0027] In operation, SLS (Sequencing Lamination) technology is a rapid prototyping process. Material powder is spread onto the surface of a pre-formed part and leveled. A high-intensity CO2 laser scans the newly laid layer to create the part's cross-section. Under high-intensity laser irradiation, the powder is sintered together to obtain the part's cross-section, which connects to the pre-formed portion below. After one cross-section is sintered, a new layer of powder material is laid, and the next cross-section is selectively sintered. In short, SLS technology uses lasers to selectively sinter solid powder in layers, creating layers of solidified powder to form parts of the desired shape. The entire process includes CAD model creation and data processing, powder spreading, sintering, and post-processing.

[0028] In existing laser systems, after sintering powder once, some powder is typically piled on the surface of the forming machine. Then, a scraper is activated to push the powder into the forming agent to cover the sintered part. To ensure the accuracy of part processing, the scraper needs to level the powder inside the forming machine. However, since excess powder needs to be recycled for future use after part processing, laser sintering easily creates scrap material, resulting in the recycled powder containing solid particles. Furthermore, the powder may clump after prolonged use. When the scraper pushes powder into the forming machine, if the added powder contains solid particles, these particles may touch the part being processed, causing it to shift and affecting the processing accuracy. Additionally, the powder may move laterally as the scraper pushes it, resulting in uneven powder distribution. Therefore, the scraper needs to scrape back and forth several times before sintering can continue. This device, when adding powder to the forming machine 5, first starts the drive motor. The device is designed to drive a feeding mechanism and a moving mechanism. The feeding mechanism adds powder from storage tank 4 to feeding frame 8. While the feeding mechanism adds powder to feeding frame 8, the moving mechanism drives feeding frame 8 to move left or right. Since feeding frame 8 already contains powder, it evenly spreads the powder across the surface of molding machine 5. Simultaneously, the moving mechanism drives feeding cylinder 10 to evenly add powder to feeding frame 8, ensuring a uniform powder distribution across the surface of molding machine 5. During powder addition, feeding cylinder 10 filters out and removes any solid particles contained in the powder. This device is simple in structure and easy to use. Adding powder via feeding frame 8 effectively avoids contact with the processing material, ensuring the accuracy of the processed material. It also ensures more uniform powder distribution and automatically filters out solid particles from the powder.

[0029] As a further embodiment of the present invention, the feeding mechanism includes a feeding cylinder 10 and a hose 11; the upper end of the hose 11 is connected to the storage tank 4 and the bottom end of the hose 11 is connected to the rear side of the surface of the feeding cylinder 10; the front end of the feeding cylinder 10 is located inside the feeding frame 8 and the feeding cylinder 10 is slidably connected to the feeding frame 8; a screen cylinder 12 is fixedly connected to the front end surface of the feeding cylinder 10, and the front end of the screen cylinder 12 is rotatably connected to the collecting plate 13; sliding rods 14 are symmetrically fixedly connected to the left and right sides inside the feeding frame 8, and the collecting plate 13 is slidably connected to the sliding rods 14 on the left and right sides; an auger 15 is provided inside the feeding cylinder 10, and the front end of the auger 15 is rotatably connected to the feeding cylinder 10; the rear end of the auger 15 is located in front of the collecting plate 13; the feeding cylinder 10 and the sliding frame... 9. Sliding connection; During operation, when powder needs to be added to the feeding frame 8, the drive mechanism is activated, which drives the auger 15 to rotate. Due to its own gravity, the powder in the storage tank 4 will fall directly into the rear part of the feeding cylinder 10 through the hose 11. The powder falling into the feeding cylinder 10 will be conveyed backward by the rotating auger 15. When the powder is conveyed to the sieve cylinder 12, it will fall directly into the feeding frame 8 through the sieve cylinder 12. When the powder contains solid particles, the solid particles cannot pass through the sieve cylinder 12. Therefore, the solid particles will eventually be transported to the surface of the collecting plate 13 by the auger 15. The collecting plate 13 can stably catch the solid particles under the support of the sliding rods 14 on both sides.

[0030] As a further embodiment of the present invention, the driving mechanism includes a motor 16, which is a dual-shaft motor and the rear end of the output shaft of the motor 16 is fixedly connected to the auger 15; a first gear 17 is fixedly connected to the front end of the output shaft of the motor 16; a connecting plate 18 is fixedly connected to the surface of the feeding cylinder 10, the connecting plate 18 is fixedly connected to the motor 16, and a first pulley 19 and a second pulley 20 are rotatably connected to the front surface of the connecting plate 18; a belt 21 is provided on the surface of the first pulley 19, and the belt 21 meshes with both the first pulley 19 and the second pulley 20; the first gear 17 is coaxially fixedly connected to the first pulley 19; during operation, starting the motor 16 can drive the auger 15 to rotate, and at the same time, the motor 16 will drive the first gear 17 and the first pulley 19 to rotate, and the rotation of the first pulley 19 can drive the second pulley 20 to rotate through the belt 21.

[0031] As a further embodiment of the present invention, the moving mechanism includes a lifting frame 22, with threaded rods 23 symmetrically threaded on both sides of the lifting frame 22. The threaded rods 23 are self-locking and are rotatably connected to the left and right sides of the sliding frame 9, respectively. First racks 24 are symmetrically fixedly connected to the surface of the lifting frame 22 at the upper and lower sides of the first gear 17, with the upper and lower racks 24 alternately meshing with the first gear 17. The lifting frame 22 is slidably engaged with the connecting plate 18. The surface of the sliding frame 9 is provided with a lifting mechanism, which drives the lifting frame 22 to descend when the motor 16 drives the connecting plate 18 to slide from the left to the rightmost position, and drives the lifting frame 22 to rise when the motor 16 drives the connecting plate 18 to slide from the right to the leftmost position. During operation, when the motor 16 drives the first gear 17 to rotate, the first gear 17 meshes with the first rack 24 at the bottom position. Under the action of the first rack 24, the connecting plate 18 will drive the feeding cylinder 10 to slide to the right on the surface of the sliding frame 9. When the feeding cylinder 10 moves to the right, it will drive the feeding frame 8 to slide to the right on the surface of the first fixed frame 6. When the connecting plate 18 slides to the rightmost position on the surface of the sliding frame 9, the lifting mechanism will drive the lifting frame 22 to start moving downward. When the lifting frame 22 moves downward, the first rack 24 at the bottom position will disengage from the first gear 17, and the connecting plate 18 will no longer move. When the lifting frame 22 descends to the bottommost position, the first rack 24 at the upper position will start to mesh with the first gear 17. Under the action of the upper first rack 24 and the first gear 17, the connecting plate 18 will start to move to the left. Similarly, when the connecting plate 18 moves to the leftmost position, the lifting mechanism will drive the lifting frame 22 to rise, so that the connecting plate 18 and the feeding frame 8 can move back and forth left and right.

[0032] As a further embodiment of the present invention, the upper and lower ends of the threaded rod 23 are symmetrically fixedly connected with second gears 25. Synchronous pulleys 26 are fixedly connected to the upper end of the upper second gear 25 and the bottom end of the lower second gear 25. A synchronous belt 27 is provided on the surface of the synchronous pulleys 26, and the synchronous belt 27 meshes with the synchronous pulleys 26 on both the left and right sides. A second rack 28 is slidably connected to the surface of the sliding frame 9 at a position corresponding to the second gear 25, and the second rack 28 meshes with the second gear 25. The two upper second racks 28 are respectively located to the left rear of the upper left second gear 25 and to the right rear of the upper right second gear 25. The lower rear position; the two lower second racks 28 are respectively located at the right front position of the lower left second gear 25 and the left front position of the lower right second gear 25; the front ends of the lower left second rack 28 and the upper right second rack 28 are fixedly connected to the first push rods 29; the front surface of the connecting plate 18 is fixedly connected to the second push rods 30, which alternately engage with the two first push rods 29; the front surface of the feeding frame 8 is fixedly connected to the reciprocating screw 31, and the second pulley 20 is threadedly engaged with the reciprocating screw 31; the diameter of the first pulley 19 is larger than the diameter of the second pulley 20; the rear of the feeding frame 8 A discharge port 32 is provided on the side surface at the rear of the feeding cylinder 10. The rear end of the slide rod 14 is curved downward at the discharge port 32. During operation, when the motor 16 drives the first pulley 19 and the second pulley 20 to rotate, the second pulley 20, under the action of the reciprocating screw 31, will drive the connecting plate 18 to move backward. The connecting plate 18 will then drive the sliding frame 9 and the feeding cylinder 10 to slide backward. The feeding cylinder 10 moves backward while adding powder, thus achieving the effect of uniformly adding powder into the feeding frame 8. When the connecting plate 18 moves to the middle position of the lifting plate, at this time... When the connecting plate 18 has moved to the last side position, the rear end of the feeding cylinder 10 will move into the discharge port 32. Since the sliding rod 14 is bent downward at the discharge port 32, the collecting plate 13 on the surface of the screen cylinder 12 cannot be supported by the sliding rod 14. The collecting plate 13 will rotate downward. When the collecting plate 13 rotates downward, the solid particles collected on its surface will fall directly out. When the second pulley 20 continues to rotate, under the action of the reciprocating screw 31, the connecting plate 18 begins to drive the sliding frame 9 to move forward. At the same time, the connecting plate 18 continues to move to the right.When the connecting plate 18 moves forward and to the right to a certain extent, the first push rod 29 on the surface of the connecting plate 18 will engage with the second push rod 30 on the upper right side. When the connecting plate 18 moves the first push rod 29 forward, the first push rod 29 will move the second push rod 30 forward. The second push rod 30 will move the second rack 28 connected to it forward. When the second rack 28 moves forward, it will drive the corresponding second gear 25 to rotate. When the second gear 25 rotates, it will drive the synchronous pulleys 26 and the threaded rod 23 on the upper and lower right sides to rotate. The synchronous pulley 26 on the right side... The synchronous belt 27 drives the left synchronous pulley 26 to rotate, which in turn causes the threaded rods 23 on both sides to rotate synchronously. The rotation of the threaded rods 23 on both sides causes the lifting frame 22 to move downwards. The rotation of the left threaded rod 23 drives the two second gears 25 on its surface to rotate, causing the second rack 28 at the lower left position to move backwards. Similarly, when the connecting plate 18 moves to the left side, the first push rod 29 on the surface of the connecting plate 18 pushes the second push rod 30 at the lower left position forward, thus causing the lifting plate to move upwards.

[0033] As a further embodiment of the present invention, the feeding frame 8 is provided with two sets of fixing plates 33, which are distributed in the middle and bottom positions of the feeding frame 8. Each set of fixing plates 33 includes two fixing plates 33, which are symmetrically distributed on the left and right sides of the feeding frame 8 and are fixedly connected to the feeding frame 8. A sealing plate 34 is provided inside the fixing plate 33, and the sealing plate 34 is slidably connected to the fixing plate 33. Two cylinders 35 are fixedly connected to the surface of the feeding frame 8 at positions corresponding to each sealing plate 34, and the output ends of the two cylinders 35 are fixedly connected to the sealing plate 34. During operation, when the opening... When powder is first added to the feeding frame 8, the two sealing plates 34 at the upper position are closed by starting the cylinder 35, while the two sealing plates 34 at the lower position are opened. At this time, the feeding frame 8 is driven to move, and the powder in the feeding frame 8 begins to spread on the surface of the molding machine 5. After the feeding frame 8 moves to one side of the molding machine 5 and completes one feeding, the feeding mechanism completes the addition of powder to the feeding frame 8. Then, the cylinder 35 is started to close the two sealing plates 34 at the lower position, and at the same time, the cylinder 35 drives the two sealing plates 34 at the upper position to open. At this time, the powder that was just added will fall directly to the bottom of the feeding frame 8.

Claims

1. An intelligent powder adding device for a laser powder sintering forming machine, comprising a bottom plate (1), characterized in that: The bottom plate (1) upper surface is fixedly connected with first support frame (2) and second support frame (3), the first support frame (2) upper surface is fixedly connected with storage barrel (4) and the second support frame (3) surface is fixedly connected with forming machine (5);The second support frame (3) upper surface front and back both sides position symmetry fixedly connected with first fixed frame (6) and the second support frame (3) upper surface left and right both sides position symmetry fixedly connected with second fixed frame (7);The forming machine (5) upper position is equipped with feeding frame (8), the feeding frame (8) is slidably connected with the first fixed frame (6) of front and back both sides;The second support frame (3) front position is equipped with sliding frame (9), the sliding frame (9) is slidably connected with the second fixed frame (7) of left and right both sides;The storage barrel (4) surface is equipped with feeding mechanism, the feeding mechanism is used to add powder into feeding frame (8), while the lump in the added powder is screened out;The sliding frame (9) surface is equipped with moving mechanism, the moving mechanism is used to drive feeding frame (8) to move to add powder into forming machine (5) while driving feeding mechanism to add powder evenly into feeding frame (8) and clean up the screened lump;The sliding frame (9) surface is equipped with driving mechanism, the driving mechanism is used to drive feeding mechanism and moving mechanism to operate; The feeding mechanism includes feeding cylinder (10) and hose (11);The hose (11) upper end is connected with storage barrel (4) and the hose (11) bottom end is connected with the surface rear part of feeding cylinder (10);The feeding cylinder (10) front end part is located inside the position of feeding frame (8) and the feeding cylinder (10) is slidably connected with feeding frame (8);The feeding cylinder (10) front surface is fixedly connected with sieve cylinder (12), and the sieve cylinder (12) front end part is rotatably connected with collecting plate (13);The feeding frame (8) inside left and right both sides position symmetry is fixedly connected with slide rod (14), and the collecting plate (13) is slidably connected with the slide rod (14) of left and right both sides;The feeding cylinder (10) is equipped with auger (15), and the auger (15) front end is rotatably connected with feeding cylinder (10);The auger (15) rear end part is located in the front side position of collecting plate (13);The feeding cylinder (10) is slidably connected with sliding frame (9); The feeding frame (8) rear surface is located in the rear side position of feeding cylinder (10) and is provided with discharge port (32), and the slide rod (14) rear end part is located in the position of discharge port (32) and is downwardly curved.

2. The intelligent powder adding device for a laser powder sintering forming machine according to claim 1, characterized in that: The driving mechanism comprises a motor (16), the motor (16) is a double-shaft motor, and the rear end of the motor (16) output shaft is fixedly connected with the auger (15); the front end of the motor (16) output shaft is fixedly connected with a first gear (17); the surface of the feeding cylinder (10) is fixedly connected with a connecting plate (18), the connecting plate (18) is fixedly connected with the motor (16), and the front surface of the connecting plate (18) is rotatably connected with a first belt pulley (19) and a second belt pulley (20); the surface of the first belt pulley (19) is provided with a belt (21), the belt (21) is engaged with the first belt pulley (19) and the second belt pulley (20) at the same time; and the first gear (17) is coaxially fixedly connected with the first belt pulley (19).

3. The intelligent powder adding device for a laser powder sintering forming machine according to claim 2, characterized in that: The moving mechanism comprises a lifting frame (22), the left and right sides of the lifting frame (22) are symmetrically threadedly connected with threaded rods (23), the threaded rods (23) have self-locking property, and the left and right threaded rods (23) are respectively rotatably connected with the left and right sides of a sliding frame (9); the surface of the lifting frame (22) is fixedly connected with first racks (24) which are symmetrically arranged on the left and right sides of the first gear (17), and the first racks (24) on the left and right sides are alternately engaged with the first gear (17); the lifting frame (22) is slidably connected with the connecting plate (18); and the surface of the sliding frame (9) is provided with a lifting mechanism, the lifting mechanism is used for driving the lifting frame (22) to descend when the connecting plate (18) is driven by the motor (16) to slide from the left side to the rightmost side, and driving the lifting frame (22) to ascend when the connecting plate (18) is driven by the motor (16) to slide from the right side to the leftmost position.

4. The intelligent powder adding device for a laser powder sintering forming machine according to claim 3, characterized in that: The upper and lower ends of the threaded rods (23) are fixedly connected with second gears (25) which are symmetrically arranged, the upper end of the upper second gear (25) and the bottom end of the lower second gear (25) are fixedly connected with synchronous pulleys (26), the surface of the synchronous pulley (26) is provided with a synchronous belt (27), the synchronous belt (27) is engaged with the left and right synchronous pulleys (26) at the same time, the surface of the sliding frame (9) is slidably connected with second racks (28) which are arranged at positions corresponding to the second gears (25), the second racks (28) are engaged with the second gears (25), the upper two second racks (28) are respectively arranged at positions which are left rear of the upper left second gear (25) and right rear of the upper right second gear (25), the lower two second racks (28) are respectively arranged at positions which are right front of the lower left second gear (25) and left front of the lower right second gear (25), the front ends of the left lower second rack (28) and the right upper second rack (28) are fixedly connected with first push rods (29), and the front surface of the connecting plate (18) is fixedly connected with a second push rod (30), the second push rod (30) is alternately attached to the two first push rods (29).

5. The intelligent powder adding device for a laser powder sintering forming machine according to claim 2, characterized in that: The front surface of the feeding frame (8) is fixedly connected with a reciprocating screw rod (31), the second belt pulley (20) is threadedly connected with the reciprocating screw rod (31), and the diameter of the first belt pulley (19) is greater than that of the second belt pulley (20). 6.The intelligent powder adding device for a laser powder sintering forming machine according to claim 1, characterized in that: The feeding frame (8) is internally provided with two groups of fixed plates (33), which are distributed at the middle and bottom positions in the feeding frame (8). One group of the fixed plates (33) comprises two fixed plates (33), which are symmetrically distributed at the left and right positions in the feeding frame (8) and are both fixedly connected with the feeding frame (8). The inner position of the fixed plate (33) is provided with a sealing plate (34), which is slidingly connected with the fixed plate (33). The surface of the feeding frame (8) is fixedly connected with two air cylinders (35) at positions corresponding to each sealing plate (34), and the output ends of the two air cylinders (35) are both fixedly connected with the sealing plate (34).

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