Automatic blanking and laying device for 3D printing equipment

Abstract

The present invention discloses an automatic material dropping and spreading device for 3D printing equipment, and relates to the technical field of 3D printing equipment. The present invention comprises a supporting frame, a feeding mechanism is fixedly installed on the top of the supporting frame, a spreading mechanism is arranged in the inner cavity of the feeding mechanism, and a vibration mechanism used in conjunction with the spreading mechanism is arranged on the feeding mechanism. Under the coordinated action of the feeding mechanism and the lifting mechanism, the material storage box can be driven to perform reciprocating motion, and the lifting platform can be made to perform downward motion at equal intervals and spacings, so that the powder material can be layered in sequence and evenly dropped and spread on the lifting platform, thereby realizing the forming operation of three-dimensional solid parts. Through the setting and use of the spreading mechanism, the spreading plate can be driven to perform reciprocating motion through the connecting plate, so that the screened qualified powder material can be evenly piled at the bottom end of the inner cavity of the material storage box, thereby facilitating the subsequent uniform spreading operation of the powder material.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing equipment, and in particular to an automatic blanking and laying device for 3D printing equipment. Background Art

[0002] 3D printing is a technology that uses digital model files as the basis, and then uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing technology has been applied in the fields of construction, automobile and medical industries.

[0003] Although 3D printing technology is widely used, the automatic blanking and spreading devices used in current 3D printing equipment still have certain shortcomings: most of the existing automatic blanking and spreading devices are unable to spread the powder evenly in layers, thus affecting the development of three-dimensional solid parts forming operations.

[0004] In view of the above problems, the inventor proposes an automatic blanking and laying device for 3D printing equipment to solve the above problems. Summary of the invention

[0005] In order to solve the problem that the existing automatic blanking and paving device cannot spread the powder material evenly in layers; the purpose of the present invention is to provide an automatic blanking and paving device for 3D printing equipment.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: an automatic blanking and spreading device for 3D printing equipment, comprising a supporting frame, a feeding mechanism is fixedly installed on the top of the supporting frame, and a spreading mechanism is arranged in the inner cavity of the feeding mechanism, a vibration mechanism is arranged on the feeding mechanism for use with the spreading mechanism, and a lifting mechanism is fixedly installed on one end of the supporting frame for use with the feeding mechanism.

[0007] Preferably, the feeding mechanism includes a first servo motor and a first support, the first servo motor is fixedly mounted on one end of the supporting frame close to the lifting mechanism, a symmetrically arranged mounting bracket is fixedly mounted on one end of the supporting frame close to the lifting mechanism, and a mounting sleeve is fixedly connected to one end of the mounting bracket away from the supporting frame, the first servo motor is fixedly inserted in the mounting sleeve, and a first sprocket is fixedly sleeved at the end of the output end of the first servo motor, the first support is fixedly mounted at the four corners of the top end of the supporting frame, and a first threaded rod is rotatably inserted on the adjacent first support, a second sprocket is fixedly sleeved on one end of the first threaded rod close to the first servo motor, and a chain is meshed and sleeved on the second sprocket and the outer side of the first sprocket, and a first threaded barrel is threadedly sleeved on the first threaded rod. , and an F-shaped frame is fixedly installed on the first threaded cylinder, a storage box is fixedly installed between the two F-shaped frames, and an electromagnetic valve is provided at one end of the storage box close to the supporting base frame, and a laying plate used in conjunction with the electromagnetic valve is fixedly installed at the bottom end of the storage box close to the first servo motor, a feeding pipe is connected to the middle of the top of the storage box, and a detachable sealing cover is provided on the feed pipe, and an array of anti-slip grooves are provided on the outer wall of the sealing cover, a shielding frame used in conjunction with the feed pipe is fixedly installed on one side of the top of the inner cavity of the storage box, and a V-shaped sieve plate is fixedly installed on the inner side of the shielding frame, one end of the V-shaped sieve plate is fixedly connected to the inner wall of the storage box, and a discharge slot used in conjunction with the V-shaped sieve plate is provided on the storage box, and a sealing door is hinged on the inner side of the discharge slot.

[0008] Preferably, the paving mechanism includes a second servo motor and a second threaded rod, the second servo motor is fixedly mounted on the material storage box, and the end of the output end of the second servo motor is fixedly sleeved with the first pulley, the second threaded rod is rotatably inserted into the material storage box, and the end of the second threaded rod close to the second servo motor is fixedly sleeved with the second pulley, the second pulley and the outer side of the first pulley are transmission sleeved with a first belt, a driving plate is slidably mounted on the inner wall of the material storage box, a guide plate is fixedly mounted on the inner wall of the material storage box close to the second servo motor, and a guide block used in conjunction with the guide plate is integrally formed on the driving plate, the guide block is slidably sleeved on the guide plate, and a second threaded cylinder is fixedly inserted on the driving plate, the second threaded cylinder is threadedly sleeved on the second threaded rod, and a connecting plate is fixedly mounted on one side of the driving plate, a paving plate is integrally formed on the end of the connecting plate away from the driving plate, and the paving plate is slidably connected to the inner wall of the material storage box.

[0009] Preferably, the vibration mechanism includes a second support, the second support is fixedly mounted on the storage box, and the second support is rotatably inserted with a first rotating rod, the end of the first rotating rod away from the second servo motor is fixedly sleeved with a third wheel, and the end of the second threaded rod away from the second servo motor is fixedly sleeved with a fourth wheel, the fourth wheel and the outer side of the third wheel are transmission sleeved with a second belt, the end of the first rotating rod close to the second servo motor is fixedly sleeved with a fixing ring, and the outer wall of the fixing ring is fixedly connected with an array of rubber column hammers, which can be movably contacted with the storage box.

[0010] Preferably, the lifting mechanism includes a U-shaped plate and a return frame, the U-shaped plate is fixedly connected to the supporting base frame, and a second rotating rod and a third rotating rod are rotatably inserted on the U-shaped plate, one end of the second rotating rod is fixedly sleeved with a first gear, the return frame is slidably inserted on one end of the supporting base frame close to the first servo motor, and an array-distributed driving tooth block is fixedly installed on the inner wall of one side of the return frame, the first gear is meshed with the driving tooth block, and a lifting platform is fixedly connected to the return frame, the lifting platform is slidably connected to the supporting base frame, the end of the second rotating rod away from the first gear is fixedly sleeved with a rotating plate, and the rotating plate is provided with an array-distributed arc-shaped limiting groove and a driving groove, the arc-shaped limiting groove and the driving groove are staggered, a rotating cam is fixedly sleeved on the third rotating rod, and An arc-shaped limit plate and a driving column are fixedly installed on one side of the rotating cam, the outer wall of the arc-shaped limit plate can fit together with the inner wall of the arc-shaped limit groove, and the driving column can be movably inserted in the driving groove, a second gear is slidably sleeved on one end of the third rotating rod close to the rotating cam, and a third gear is fixedly sleeved on the outer side of the output end of the first servo motor, the third gear can mesh with the second gear, a connecting sleeve is fixedly installed on the side of the second gear away from the rotating cam, and the connecting sleeve can be slidably sleeved on the third rotating rod, an electric telescopic rod is fixedly inserted on the U-shaped plate, and the end of the output end of the electric telescopic rod is rotatably connected to the connecting sleeve, a limiting rack is fixedly installed on the inner bottom end of the U-shaped plate, and the second gear can mesh with the limiting rack.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. Under the coordinated action of the feeding mechanism and the lifting mechanism, the material storage box can be driven to reciprocate, and the lifting platform can be made to move downward at equal intervals and spacings, so that the powder can be layered in sequence and evenly dropped and spread on the lifting platform, thereby realizing the forming operation of three-dimensional solid parts;

[0013] 2. Through the setting and use of the paving mechanism, the paving plate can be driven to reciprocate through the connecting plate, so that the screened qualified powder can be evenly piled at the bottom of the inner cavity of the storage box, thereby facilitating the subsequent uniform paving operation of the powder;

[0014] 3. Through the setting and use of the vibration mechanism, the three rubber column hammers can alternately hit the storage box, so that the storage box can vibrate, which is convenient for the screening operation and provides convenience for the regular stacking of powder materials and the subsequent automatic dropping of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure in the middle.

[0018] Figure 3 For the present invention Figure 1 Enlarged schematic diagram of the structure at point B in the middle.

[0019] Figure 4 It is a schematic diagram of the interior of the storage box in the present invention.

[0020] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point C in the middle.

[0021] Figure 6 It is a schematic diagram of the installation of the paving mechanism in the present invention.

[0022] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point D in the middle.

[0023] Figure 8 It is a schematic diagram of the installation of the lifting mechanism in the present invention.

[0024] Fig. 9 For the present invention Figure 8 Enlarged schematic diagram of the structure at point E in the middle.

[0025] In the figure: 1. Support chassis; 2. Feeding mechanism; 21. First servo motor; 22. First support; 23. First sprocket; 24. First threaded rod; 25. Second sprocket; 26. Chain; 27. First threaded barrel; 28. F-type frame; 29. ​​Storage box; 210. Paving board; 211. Feed pipe; 212. Blocking cover; 213. Anti-skid groove; 214. Shielding frame; 215. V-shaped screen plate; 216. Discharge channel; 217. Sealing door; 218. Mounting bracket; 219. Mounting sleeve; 3. Paving mechanism; 31. Second servo motor; 32. Second threaded rod; 33. First wheel disc; 34. Second wheel disc; 35. First belt; 36. Driving plate; 37. Second threaded barrel; 38. Connecting Plate; 39, paving plate; 310, guide plate; 311, guide block; 4, vibration mechanism; 41, second support; 42, first rotating rod; 43, third wheel disc; 44, fourth wheel disc; 45, second belt; 46, fixing ring; 47, rubber column hammer; 5, lifting mechanism; 51, U-shaped plate; 52, return frame; 53, second rotating rod; 54, third rotating rod; 55, first gear; 56, driving gear block; 57, lifting platform; 58, rotating plate; 59, arc-shaped limit groove; 510, driving groove; 511, rotating cam; 512, arc-shaped limit plate; 513, driving column; 514, second gear; 515, third gear; 516, connecting sleeve; 517, electric telescopic rod; 518, limit rack. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1: Figure 1-9 As shown, the present invention provides an automatic blanking and spreading device for 3D printing equipment, including a supporting frame 1, a feeding mechanism 2 is fixedly installed on the top of the supporting frame 1, and a spreading mechanism 3 is provided in the inner cavity of the feeding mechanism 2, a vibration mechanism 4 used in conjunction with the spreading mechanism 3 is provided on the feeding mechanism 2, and a lifting mechanism 5 used in conjunction with the feeding mechanism 2 is fixedly installed at one end of the supporting frame 1, and a laser generating device used in conjunction with the feeding mechanism 2 is provided on the supporting frame 1, so that the laser beam can scan the powder of the solid part under the control of the computer and according to the information of the cross-sectional profile, so that the temperature of the powder can be raised to above the melting point. This is the prior art and will not be elaborated here.

[0028] The feeding mechanism 2 includes a first servo motor 21 and a first support 22. The first servo motor 21 is fixedly mounted on one end of the supporting frame 1 close to the lifting mechanism 5. A symmetrically arranged mounting bracket 218 is fixedly mounted on the end of the supporting frame 1 close to the lifting mechanism 5. The mounting bracket 218 is fixedly connected to the end of the mounting bracket 218 away from the supporting frame 1 with a mounting sleeve 219. The first servo motor 21 is fixedly inserted in the mounting sleeve 219. The coordination of the mounting bracket 218 and the mounting sleeve 219 effectively improves the first servo motor 21. The first sprocket 23 is fixedly sleeved at the end of the output end of the first servo motor 21, the first support 22 is fixedly installed at the four corners of the top of the support frame 1, and a first threaded rod 24 is rotatably inserted on the adjacent first support 22, a second sprocket 25 is fixedly sleeved on one end of the first threaded rod 24 close to the first servo motor 21, and the second sprocket 25 is meshed with the outer side of the first sprocket 23 and sleeved with a chain 26, a first threaded barrel 27 is threadedly sleeved on the first threaded rod 24, and a first threaded barrel 27 is fixedly installed An F-shaped frame 28 is provided between the two F-shaped frames 28, and a material storage box 29 is fixedly installed, and an electromagnetic valve is provided at one end of the material storage box 29 close to the supporting base frame 1, and a material laying plate 210 used in conjunction with the electromagnetic valve is fixedly installed at the bottom end of the material storage box 29 close to the first servo motor 21, and a feeding pipe 211 is connected to the middle of the top of the material storage box 29, and a detachable plugging cover 212 is provided on the feeding pipe 211, and an array of anti-slip grooves 213 are provided on the outer wall of the plugging cover 212, and a material storage box 29 inner cavity top is fixedly installed on one side. A shielding frame 214 is provided for use with the feed pipe 211, and a V-shaped sieve plate 215 is fixedly installed on the inner side of the shielding frame 214. The V-shaped sieve plate 215 can effectively screen the powder. One end of the V-shaped sieve plate 215 is fixedly connected to the inner wall of the storage box 29, and the storage box 29 is provided with a discharge groove 216 for use with the V-shaped sieve plate 215. A sealing door 217 is hinged on the inner side of the discharge groove 216. The setting and use of the sealing door 217 provides convenience for cleaning unqualified powder on the V-shaped sieve plate 215.

[0029] By adopting the above-mentioned technical solution, when in use, the user can turn on the first servo motor 21, so that it can drive the first sprocket 23 to rotate, and then drive the two second sprockets 25 to rotate through the chain 26, and further drive the two first threaded cylinders 27 to move to the side away from the first servo motor 21, so that the storage box 29 can be driven to move to the side away from the first servo motor 21 through the two F-type frames 28, and when the storage box 29 moves to a suitable position, the electromagnetic valve can be opened, so that the powder can be evenly dropped onto the lifting mechanism 5, and with the use of the paving plate 210, the dropped powder can be evenly spread.

[0030] The spreading mechanism 3 includes a second servo motor 31 and a second threaded rod 32. The second servo motor 31 is fixedly mounted on the material storage box 29, and the end of the output end of the second servo motor 31 is fixedly sleeved with a first pulley 33. The second threaded rod 32 is rotatably inserted into the material storage box 29, and the end of the second threaded rod 32 close to the second servo motor 31 is fixedly sleeved with a second pulley 34. The second pulley 34 and the outer sides of the first pulley 33 are transmission sleeved with a first belt 35. A driving plate 36 is slidably mounted on the inner wall of the material storage box 29, and a second threaded cylinder 37 is fixedly inserted on the driving plate 36. The second threaded cylinder 37 is threadedly sleeved on the second threaded rod 32, and a connecting plate 38 is fixedly mounted on one side of the driving plate 36. A spreading plate 39 is integrally formed at the end of the connecting plate 38 away from the driving plate 36, and the spreading plate 39 is slidably connected to the inner wall of the material storage box 29.

[0031] By adopting the above-mentioned technical scheme, when in use, the second servo motor 31 will drive the first wheel disc 33 to rotate alternately in forward and reverse directions, thereby being able to drive the second wheel disc 34 to rotate alternately in forward and reverse directions through the first belt 35, and then being able to drive the second threaded rod 32 to rotate alternately in forward and reverse directions, and further being able to drive the driving plate 36 to reciprocate through the second threaded cylinder 37, thereby being able to drive the spreading plate 39 to reciprocate through the connecting plate 38, and then being able to evenly stack the screened qualified powder at the bottom end of the inner cavity of the storage box 29, further facilitating the subsequent uniform spreading of the powder.

[0032] The vibration mechanism 4 includes a second support 41, which is fixedly mounted on the storage box 29, and a first rotating rod 42 is rotatably inserted on the second support 41, and a third wheel disc 43 is fixedly sleeved on the end of the first rotating rod 42 away from the second servo motor 31, and a fourth wheel disc 44 is fixedly sleeved on the end of the second threaded rod 32 away from the second servo motor 31, and a second belt 45 is connected to the outer side of the fourth wheel disc 44 and the third wheel disc 43, and a fixing ring 46 is fixedly sleeved on the end of the first rotating rod 42 close to the second servo motor 31, and an array of rubber column hammers 47 are fixedly connected to the outer wall of the fixing ring 46, and the rubber column hammers 47 can be movably contacted with the storage box 29.

[0033] By adopting the above technical scheme, when the second threaded rod 32 rotates alternately in the forward and reverse directions, it will drive the fourth wheel plate 44 to rotate alternately in the forward and reverse directions, so that the third wheel plate 43 can be driven to rotate alternately in the forward and reverse directions through the second belt 45, and then the first rotating rod 42 can be driven to rotate alternately in the forward and reverse directions, and further the three rubber column hammers 47 can be driven to rotate alternately in the forward and reverse directions through the fixing ring 46, so that the three rubber column hammers 47 can alternately strike the storage box 29, so that the storage box 29 can vibrate, thereby facilitating the screening operation and providing convenience for the regular stacking of powder materials and the subsequent automatic dropping of materials.

[0034] The lifting mechanism 5 includes a U-shaped plate 51 and a return frame 52. The U-shaped plate 51 is fixedly connected to the support base 1, and a second rotating rod 53 and a third rotating rod 54 are rotatably inserted on the U-shaped plate 51. One end of the second rotating rod 53 is fixedly sleeved with a first gear 55. The return frame 52 is slidably inserted on one end of the support base 1 close to the first servo motor 21, and an array of driving gear blocks 56 are fixedly installed on the inner wall of one side of the return frame 52. The first gear 55 is meshed with the driving gear block 56, and the return frame 52 is fixedly connected to the There is a lifting platform 57, which is slidably connected to the supporting base frame 1. The end of the second rotating rod 53 away from the first gear 55 is fixedly sleeved with a rotating plate 58, and the rotating plate 58 is provided with an array of arc-shaped limit grooves 59 and driving grooves 510, and the arc-shaped limit grooves 59 and the driving grooves 510 are staggered. A rotating cam 511 is fixedly sleeved on the third rotating rod 54, and an arc-shaped limit plate 512 and a driving column 513 used in conjunction are fixedly installed on one side of the rotating cam 511. The outer wall of the arc-shaped limit plate 512 can The third gear 515 is meshed with the second gear 514, and the size of the second gear 514 is larger than that of the third gear 515, so that a speed difference is formed when the second gear 514 is driven to rotate by the third gear 515, and When the third gear 515 rotates four circles, the second gear 514 will rotate one circle. A connecting sleeve 516 is fixedly installed on the side of the second gear 514 away from the rotating cam 511, and the connecting sleeve 516 can be slidably mounted on the third rotating rod 54. An electric telescopic rod 517 is fixedly inserted on the U-shaped plate 51, and the end of the output end of the electric telescopic rod 517 is rotatably connected to the connecting sleeve 516. A limiting rack 518 is fixedly installed on the inner bottom end of the U-shaped plate 51, and the second gear 514 can mesh with the limiting rack 518.

[0035] By adopting the above technical solution, when the third gear 515 rotates, the second gear 514 will be driven to rotate, so that the rotating cam 511 can be driven to rotate through the third rotating rod 54, and then the arc-shaped limit plate 512 and the driving column 513 can be driven to rotate, and when the powder paving operation is completed, the electromagnetic valve can be closed. At the same time, the arc-shaped limit plate 512 will be separated from the corresponding arc-shaped limit groove 59, and then the driving column 513 will be stuck in the corresponding driving groove 510, and then the driving column 513 will slide back and forth along the inner wall of the corresponding driving groove 510, so that the rotating plate 58 can be pushed to rotate forty-five degrees, and then the first gear 55 can be driven to rotate forty-five degrees through the second rotating rod 53, and further the return frame 52 can be driven to move down a certain distance through the driving tooth block 56, and the lifting platform 57 can be driven to move down a certain distance. In addition, when the driving column 513 is separated from the corresponding driving groove 510, the arc-shaped limit plate 512 will be stuck in another corresponding arc-shaped limit groove 59. At this time, the user can The servo motor 21 is paused and the electric telescopic rod 517 is opened, so that it can push the connecting sleeve 516 to move to the side away from the electric telescopic rod 517, and then drive the second gear 514 to move, and when the second gear 514 is completely separated from the third gear 515, the second gear 514 will mesh with the limit rack 518, and then the user can drive the first servo motor 21 to reverse and open the laser generating device, so as to drive the storage box 29 to reset, and during the resetting of the storage box 29, the laser generating device can, under the control of a computer, enable the laser beam to scan the powder of the solid part according to the information of the cross-sectional profile, so that the temperature of the powder can be raised to above the melting point, and the scanned powder can be melted and then dropped below the melting point, so that they can be bonded to each other to obtain a sintering surface, while the powder in the non-scanning area is still loose, and then the user drives the electric telescopic rod 517 to drive the second gear 514 to reset, and then the user can perform subsequent powder laying and forming operations according to the above steps.

[0036] Embodiment 2: Figure 5 As shown, a guide plate 310 is fixedly installed on the inner wall of the storage box 29 close to the second servo motor 31, and a guide block 311 used in conjunction with the guide plate 310 is integrally formed on the driving plate 36, and the guide block 311 is slidably sleeved on the guide plate 310.

[0037] By adopting the above technical solution, under the coordinated action of the guide plate 310 and the guide block 311, the movement adjustment of the driving plate 36 can be limited and guided.

[0038] Working principle: When in use, the user can remove the blocking cover 212, and then the user can drive the second servo motor 31 to rotate alternately in forward and reverse directions and introduce the powder to be used into the storage box 29 through the feeding pipe 211. At this time, the powder will fall between the shielding frame 214 and the V-shaped screen plate 215, and the V-shaped screen plate 215 will screen the powder. Qualified powder will fall to the bottom of the inner cavity of the storage box 29, and unqualified powder will accumulate on the V-shaped screen plate 215.

[0039] At the same time, the second servo motor 31 will drive the first wheel disc 33 to rotate alternately in forward and reverse directions, thereby driving the second wheel disc 34 to rotate alternately in forward and reverse directions through the first belt 35, and then driving the second threaded rod 32 to rotate alternately in forward and reverse directions, and further driving the driving plate 36 to reciprocate through the second threaded cylinder 37, thereby driving the paving plate 39 to reciprocate through the connecting plate 38, and then the screened qualified powder can be evenly stacked at the bottom end of the inner cavity of the storage box 29, further facilitating the subsequent uniform paving operation of the powder;

[0040] During this period, when the second threaded rod 32 rotates alternately in the forward and reverse directions, it will drive the fourth wheel plate 44 to rotate alternately in the forward and reverse directions, so that the third wheel plate 43 can be driven to rotate alternately in the forward and reverse directions through the second belt 45, and then the first rotating rod 42 can be driven to rotate alternately in the forward and reverse directions, and further the three rubber column hammers 47 can be driven to rotate alternately in the forward and reverse directions through the fixing ring 46, so that the three rubber column hammers 47 can alternately strike the storage box 29, so that the storage box 29 can vibrate, so as to facilitate the screening operation, and provide convenience for the regular stacking of powder materials and the subsequent automatic dropping of materials;

[0041] When a proper amount of powder is stored in the storage box 29, the user can stop the powder introduction operation and reset the blocking cover 212, and then the user can turn on the first servo motor 21, so that it can drive the third gear 515 and the first sprocket 23 to rotate, and then drive the two second sprockets 25 to rotate through the chain 26, and further drive the two first threaded cylinders 27 to move to the side away from the first servo motor 21, so that the storage box 29 can be driven to move to the side away from the first servo motor 21 through the two F-shaped frames 28, and when the storage box 29 moves to a suitable position, the electromagnetic valve can be opened, so that the powder can be evenly dropped on the lifting platform 57, and with the use of the paving board 210, the dropped powder can be evenly spread;

[0042] When the third gear 515 rotates, it will drive the second gear 514 to rotate, so that the rotating cam 511 can be driven to rotate through the third rotating rod 54, and then the arc-shaped limit plate 512 and the driving column 513 can be driven to rotate. When the powder paving operation is completed, the electromagnetic valve can be closed. At the same time, the arc-shaped limit plate 512 will be separated from the corresponding arc-shaped limit groove 59, and then the driving column 513 will be inserted into the corresponding driving groove 510. After that, the driving column 513 will slide back and forth along the inner wall of the corresponding driving groove 510, so that the rotating plate 58 can be pushed to rotate forty-five degrees, and then the first gear 55 can be driven to rotate forty-five degrees through the second rotating rod 53, and further, the return frame 52 can be driven to move down a certain distance through the driving tooth block 56, and the lifting platform 57 can be driven to move down a certain distance. In addition, when the driving column 513 is separated from the corresponding driving groove 510, the arc-shaped limit plate 512 will be inserted into another corresponding arc-shaped limit groove 59. At this time, the user can turn the first servo motor 21 Pause and open the electric telescopic rod 517, so that it can push the connecting sleeve 516 to move to the side away from the electric telescopic rod 517, and then drive the second gear 514 to move, and when the second gear 514 is completely separated from the third gear 515, the second gear 514 will mesh with the limit rack 518, and then the user can drive the first servo motor 21 to reverse and open the laser generating device, so as to drive the storage box 29 to reset, and during the resetting of the storage box 29, the laser generating device can, under the control of a computer, enable the laser beam to scan the powder of the solid part according to the information of the cross-sectional profile, so that the temperature of the powder can be raised to above the melting point, and the scanned powder can be melted and then dropped below the melting point, so that they can be bonded to each other to obtain a sintering surface, while the powder in the non-scanning area is still loose, and then the user drives the electric telescopic rod 517 to drive the second gear 514 to reset, and then the user can perform subsequent powder laying and forming operations according to the above steps.

[0043] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An automatic blanking and laying device for 3D printing equipment, comprising a supporting frame (1), characterized in that: A feeding mechanism (2) is fixedly mounted on the top of the supporting frame (1), and a spreading mechanism (3) is arranged in the inner cavity of the feeding mechanism (2). A vibrating mechanism (4) used in conjunction with the spreading mechanism (3) is arranged on the feeding mechanism (2), and a lifting mechanism (5) used in conjunction with the feeding mechanism (2) is fixedly mounted on one end of the supporting frame (1). The feeding mechanism (2) comprises a first servo motor (21) and a first support (22); the first servo motor (21) is fixedly mounted on one end of the supporting base frame (1) close to the lifting mechanism (5); and a first sprocket (23) is fixedly sleeved at the end of the output end of the first servo motor (21); the first support (22) is fixedly mounted at the four corners of the top end of the supporting base frame (1); and a first threaded rod (24) is rotatably inserted on the adjacent first support (22); and a second sprocket (23) is fixedly sleeved at one end of the first threaded rod (24) close to the first servo motor (21). 25), and the second sprocket (25) is meshed with the outer side of the first sprocket (23) and is sleeved with a chain (26), the first threaded rod (24) is sleeved with a first threaded cylinder (27), and the first threaded cylinder (27) is fixedly mounted with an F-shaped frame (28), a material storage box (29) is fixedly mounted between the two F-shaped frames (28), and an electromagnetic valve is provided at one end of the material storage box (29) close to the supporting base frame (1), and a material laying plate (210) used in conjunction with the electromagnetic valve is fixedly mounted at the bottom end of one side of the material storage box (29) close to the first servo motor (21), A symmetrically arranged mounting bracket (218) is fixedly mounted on one end of the supporting base frame (1) close to the lifting mechanism (5), and a mounting sleeve (219) is fixedly connected to one end of the mounting bracket (218) away from the supporting base frame (1), and the first servo motor (21) is fixedly inserted in the mounting sleeve (219). The lifting mechanism (5) comprises a U-shaped plate (51) and a return frame (52), wherein the U-shaped plate (51) is fixedly connected to the supporting base frame (1), and a second rotating rod (53) and a third rotating rod (54) are rotatably inserted on the U-shaped plate (51), one end of the second rotating rod (53) is fixedly sleeved with a first gear (55), the return frame (52) is slidably inserted on one end of the supporting base frame (1) close to the first servo motor (21), and an array of driving gear blocks (56) are fixedly installed on the inner wall of one side of the return frame (52), the first gear (55) is meshed with the driving gear block (56), and a lifting platform (57) is fixedly connected to the return frame (52), and the lifting platform (57) is slidably connected to the supporting base frame (1), and the end of the second rotating rod (53) away from the first gear (55) is fixedly sleeved with a rotating plate (58), and The rotating plate (58) is provided with an array of arc-shaped limit grooves (59) and driving grooves (510), and the arc-shaped limit grooves (59) and the driving grooves (510) are staggered. A rotating cam (511) is fixedly sleeved on the third rotating rod (54), and a matching arc-shaped limit plate (512) and a driving column (513) are fixedly installed on one side of the rotating cam (511). The outer wall of the arc-shaped limit plate (512) can fit with the inner wall of the arc-shaped limit groove (59), and the driving column (513) can be movably inserted in the driving groove (510). A second gear (514) is slidably sleeved on one end of the third rotating rod (54) close to the rotating cam (511), and a third gear (515) is fixedly sleeved on the outer side of the output end of the first servo motor (21), and the third gear (515) can mesh with the second gear (514).

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