SLM printing equipment with part post-processing device

Abstract

The SLM printing equipment comprises a machine body with a forming chamber and a rotary lifting mechanism, a plurality of sealing plates are arranged in the forming chamber in a sliding mode and divide the forming chamber into a printing bin, a powder supply bin and a post-processing bin, a printing groove is formed in the bottom of the printing bin, and the powder supply bin is arranged in the printing groove. A printing platform is movably connected into the printing groove, the printing bin is provided with a laser forming system, the powder supply bin is provided with a powder supply slicking mechanism, the post-processing bin is provided with a machining device, and the printing platform is driven to ascend or descend or rotate through a rotary lifting mechanism. And after printing is completed, the side, away from the printing groove, of the printing platform is lifted till powder in the printing groove is completely discharged, then the parts on the printing platform are subjected to aftertreatment through the machining device, the number of times of multiple clamping of the parts is reduced, and the machining efficiency is improved. And the production efficiency and the forming precision of printed parts are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of SLM printing equipment, and in particular to an SLM printing equipment with a parts post-processing device. Background Art

[0002] SLM printing equipment selectively melts metal powder through a high-energy-density laser beam, and then deposits it point by point, line by line, and layer by layer to finally produce metal parts with complex shapes. The specific process is as follows: First, a thin layer of metal powder is laid on the work platform. Then, a high-power laser beam selectively melts the powder according to the pre-designed 3D model data. After the laser beam scans a layer, the work platform drops a layer thickness, and then lays a new layer of powder, and repeats the above process until the part is fully formed.

[0003] The invention with publication number CN112846236A discloses a metal 3D printer based on SLM technology, including a printer body, a control cabinet, a fan and a filter component. The printer body includes a cabin, a laser component is installed on the top of the cabin, a scraper drive device is installed inside the cabin, and a lifting cylinder A and a lifting cylinder B are installed at the bottom of the cabin; the control cabinet includes a bracket component A, the printer body is fixedly installed on the top of the bracket component A, and a laser generator, a servo motor controller and an electrical control cabinet are installed inside the bracket component A; the fan and filter component includes a bracket component B, and a gas filtering device and a fan are installed inside the bracket component B.

[0004] After the parts are printed, the printing equipment in the above technical solution cannot directly perform subsequent processes such as heat treatment and cutting on the parts, and cannot achieve direct terminal forming in one time. After the parts are taken out of the forming chamber, the post-processing process needs to be positioned and calibrated multiple times in different equipment, resulting in low production efficiency of the workpiece. The positioning accuracy of different equipment is different, resulting in accumulated positioning errors, resulting in low final forming accuracy of the workpiece. Summary of the invention

[0005] In order to improve the production efficiency and molding accuracy of printed parts, the present application provides an SLM printing device with a part post-processing device.

[0006] The present application provides an SLM printing device with a part post-processing device, which adopts the following technical solution: A SLM printing device with a part post-processing device comprises a body with a forming chamber and a rotating lifting mechanism, wherein a plurality of sealing plates are respectively slidably arranged in the forming chamber, and the plurality of sealing plates respectively divide the forming chamber into a printing chamber, a powder supply chamber and a post-processing chamber, a printing slot is provided at the bottom of the printing chamber, a printing platform is movably connected in the printing slot, the rotating lifting mechanism is used to drive the sliding and rotation of the printing platform, a laser forming system for printing and forming is provided at the top of the printing chamber, a powder supply and leveling mechanism for powder supply is provided in the powder supply chamber, and a mechanical processing device for milling formed parts is provided in the post-processing chamber, when the body is in a printing working state, the plurality of sealing plates are moved to the printing chamber and connected to the powder supply chamber, and when the body is in a post-processing working state, the plurality of sealing plates are moved to the post-processing chamber and connected to the powder supply chamber.

[0007] By adopting the above technical scheme, the printing platform is driven to rise and fall or rotate respectively by the rotating lifting mechanism. When in the printing process, the powder is transported into the groove by the powder supply and scraping mechanism, and is printed and formed on the printing platform by the laser forming system. After printing is completed, the printing platform rises to the side away from the printing groove until the powder in the printing groove is exhausted, and then the semi-finished product on the printing platform is post-processed by the mechanical processing device, thereby reducing the number of multiple clamping of the semi-finished product and improving the production efficiency and forming accuracy of the printed parts; at the same time, when the parts are in the printing process and the post-processing process, the forming chambers are separated by the sealing plate respectively, thereby reducing the possibility of mixing the printing powder with the debris after cutting.

[0008] Preferably, the rotary lifting mechanism includes a lifting column, a rotating column, a first driving member and a second driving member, the lifting column is slidably connected to the machine body along the vertical direction, the printing platform is rotatably connected to the lifting column along the vertical direction, the rotating column is penetrated and rotatably connected to the lifting column, and the rotating column is coaxially and fixedly connected to the printing platform, the first driving member is used to drive the sliding of the lifting column, and the second driving member is used to drive the rotation of the rotating column.

[0009] By adopting the above technical solution, the first driving member drives the lifting column to slide, and the second driving member drives the rotating column to rotate, so that the printing platform can be rotated and lifted respectively, so as to facilitate the printing and post-processing of parts on the printing platform, thereby improving the production efficiency and molding accuracy of printed parts.

[0010] Preferably, the powder supply and scraping mechanism includes a powder scraper plate, a powder supply platform, a third driving member and a fourth driving member. A powder supply groove is provided at the bottom of the powder supply bin, and the powder supply platform is slidably connected in the powder supply groove along a vertical direction. A powder collecting groove is provided in the printing bin, and the powder collecting groove is connected to the powder supply platform through a pipeline. The third driving member is used to drive the sliding of the powder supply platform, and the powder scraper plate is slidably connected to the machine body along a horizontal direction. The powder supply groove, the printing groove and the powder collecting groove are all located on the moving path of the powder scraper plate, and the fourth driving member is used to drive the sliding of the powder scraper plate.

[0011] By adopting the above technical solution, the third driving member drives the powder supply platform to slide, and the powder in the powder supply slot is pushed into the powder supply bin. The fourth driving member drives the powder scraper plate to slide, and the powder in the powder supply bin is pushed into the printing slot. The powder pushed into the printing slot is scraped flat, and the excess powder is pushed into the powder collecting slot for recovery.

[0012] Preferably, the machining device includes a sliding seat, a sliding seat, a rotating frame, a tool holder and a driving assembly, the sliding seat is slidably connected in the post-processing chamber along a horizontal direction, the sliding seat is slidably connected to the sliding seat along a sliding direction perpendicular to the sliding seat, the rotating frame is rotatably connected to the sliding seat along a horizontal direction, the tool holder is rotatably connected to the rotating frame, and the driving assembly is used to drive the movement of the sliding seat, the sliding seat, the rotating frame and the tool holder respectively.

[0013] By adopting the above technical solution, the driving assembly drives the sliding seat, the sliding seat, and the rotating frame to move respectively, and together with the lifting and rotation of the printing platform, a five-axis motion is formed to facilitate the cutting and surface treatment of the printed parts on the printing platform, reduce the number of clamping times of the printed parts, and improve the production efficiency and molding accuracy of the printed parts.

[0014] Preferably, a waste trough is also provided in the printing chamber, and the waste trough surrounds the printing trough. A plurality of baffles are slidably connected to the machine body. When the forming chamber is in the printing and molding process, the baffles cover the waste trough and expose the powder collecting trough. When the forming chamber is in the remaining post-processing process, the baffles cover the powder collecting trough and expose the waste trough.

[0015] By adopting the above technical solution, the printing powder and the chips after cutting are recycled separately, which reduces the possibility of mixing the printing powder and the chips after cutting, and facilitates the recycling and cleaning of the printing powder and the chips after cutting.

[0016] Preferably, it also includes a driving device, which is used to simultaneously drive the sliding of multiple sealing plates and baffles, the sealing plates include a first sealing plate and a second sealing plate, the first sealing plate and the second sealing plate are respectively slidably connected to the printing chamber along the vertical direction, the first sealing plate is used to separate the printing chamber and the powder supply chamber, the second sealing plate is used to separate the printing chamber and the post-processing chamber, when the forming chamber is in the printing process, the second sealing plate moves to abut against the printing chamber, and when the forming chamber is in the post-processing process, the first sealing plate moves to abut against the printing chamber.

[0017] By adopting the above technical solution, the first sealing plate, the second sealing plate and the baffle are driven to slide simultaneously by the driving device, so that the powder supply bin and the powder collecting trough are opened synchronously, or the post-processing bin and the waste trough are opened synchronously, so that the printing process and the post-processing process are carried out separately, and the printing powder and the post-cutting debris can be processed separately.

[0018] Preferably, the driving device includes a plurality of driving screws and a driving motor, the plurality of driving screws are respectively rotatably connected to the body in a vertical direction, the plurality of driving screws respectively correspond to the first sealing plate and the second sealing plate, the plurality of screws are respectively penetrated and threadedly connected to the first sealing plate or the second sealing plate, the plurality of driving screws are respectively coaxially and fixedly connected with a first bevel gear, a connecting rod is rotatably connected to the body, the connecting rod is coaxially and fixedly connected with a plurality of second bevel gears, the plurality of second bevel gears respectively correspond to the plurality of first bevel gears, the plurality of second bevel gears are respectively meshed with the corresponding first bevel gears, the connecting rod is coaxially and fixedly connected with a third gear, a rack is fixedly connected to any of the baffles, the third gear is meshed with the rack, the plurality of baffles are respectively fixedly connected with inclined rods, the plurality of inclined rods are respectively penetrated and slidably connected to adjacent baffles, the driving motor is fixedly connected to the body, and one end of the output shaft of the driving motor is coaxially and fixedly connected to the connecting rod.

[0019] By adopting the above technical solution, the driving motor rotates the connecting rod, thereby causing the second bevel gears and the third gear to rotate together. Through the meshing connection between the second bevel gear and the first bevel gear, the first bevel gear and the driving screw are rotated together, so that the first sealing plate and the second sealing plate are moved along the axial direction of the corresponding driving screw, thereby realizing the lifting and lowering of the first sealing plate and the second sealing plate; at the same time, the meshing connection between the third gear and the rack causes the rack to slide, thereby driving the baffle fixedly connected to the rack to slide, and the friction force of the inclined rod drives the adjacent baffles to slide, so that multiple baffles slide synchronously.

[0020] The technical effects of the present invention are mainly reflected in the following aspects: 1. The present invention is provided with a rotary lifting mechanism and a sealing plate, and the rotary lifting mechanism is used to drive the printing platform to lift or rotate. When in the printing process, the powder is conveyed into the printing tank by the powder supply and leveling mechanism, and is printed and formed on the printing platform by the laser forming system. After the printing is completed, the printing platform is raised to the side away from the printing tank until the powder in the printing tank is completely discharged, and then the semi-finished product on the printing platform is post-processed by the mechanical processing device, thereby reducing the number of multiple clamping of the semi-finished product and improving the production efficiency and forming accuracy of the printed parts; at the same time, when the parts are in the printing process and the post-processing process, the forming chambers are separated by the sealing plate, thereby reducing the possibility of mixing the printing powder with the debris after cutting; 2. The present invention provides a waste trough and a baffle to separate the printing powder from the chips after cutting for recycling, thereby reducing the possibility of mixing the printing powder with the chips after cutting and facilitating the recycling and cleaning of the printing powder and the chips after cutting; 3. The present invention provides a driving device, which drives the first sealing plate, the second sealing plate and the baffle to slide simultaneously, so that the powder supply bin and the powder collecting trough are opened synchronously, or the post-processing bin and the waste trough are opened synchronously, so that the printing process and the post-processing process are carried out separately, and the printing powder and the post-cutting debris can be processed separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0022] Figure 2 It is a schematic diagram of the structure of the forming chamber of the embodiment of the present application.

[0023] Figure 3 is along Figure 2 Enlarged view of point A in the middle.

[0024] Figure 4 is along Figure 3 Enlarged view of point B in the middle.

[0025] Figure 5 It is a schematic diagram of the printing slot structure of an embodiment of the present application.

[0026] Figure 6 is along Figure 5 Enlarged view of point C in the middle.

[0027] Description of reference numerals: 1. machine body; 2. forming chamber; 21. printing chamber; 211. printing slot; 212. printing platform; 213. waste slot; 214. powder collecting slot; 215. baffle; 22. powder supply chamber; 221. powder supply slot; 23. post-processing chamber; 24. sealing plate; 241. first sealing plate; 242. second sealing plate; 3. rotating lifting mechanism; 31. lifting column; 32. rotating column; 33. first driving member; 331. first motor; 332. first threaded rod; 34. second driving member; 341. second motor; 342. sliding plate; 343, first gear; 344, second gear; 4, powder supply and scraping mechanism; 41, powder scraping plate; 42, powder supply platform; 43, third driving member; 431, electric cylinder; 44, fourth driving member; 441, chain plate; 442, transmission wheel; 443, fourth motor; 5, machining device; 51, sliding seat; 52, sliding seat; 53, rotating frame; 54, tool holder; 55, driving assembly; 551, eighth motor; 6, driving device; 61, driving screw; 62, driving motor; 63, first bevel gear; 64, connecting rod; 65, second bevel gear. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-6 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0029] The embodiment of the present application discloses an SLM printing device with a part post-processing device.

[0030] Reference Figure 1-Figure 5 The SLM printing device with a part post-processing device of the present embodiment comprises a body 1 with a forming chamber 2 and a rotating lifting mechanism 3. A plurality of sealing plates 24 are respectively slidably arranged in the forming chamber 2. The plurality of sealing plates 24 respectively separate the forming chamber 2 into a printing chamber 21, a powder supply chamber 22 and a post-processing chamber 23. A printing slot 211 is provided at the bottom of the printing chamber 21. A printing platform 212 is movably connected in the printing slot 211. The rotating lifting mechanism 3 is used to drive the sliding and rotation of the printing platform 212. An air inlet and an air suction port for argon gas to enter and exit the printing chamber 21 are also provided in the printing chamber 21. The top of the printing chamber 21 is provided with a laser forming system for printing and forming, the laser forming system includes a laser, the output end of the laser is directed toward the printing platform 212, a powder supply and leveling mechanism 4 for powder supply is installed in the powder supply chamber 22, a mechanical processing device 5 for milling formed parts is installed in the post-processing chamber 23, when the machine body 1 is in the printing working state, a plurality of sealing plates 24 move to the printing chamber 21 and are connected to the powder supply chamber 22, when the machine body 1 is in the post-processing working state, a plurality of sealing plates 24 move to the post-processing chamber 23 and are connected to the powder supply chamber 22.

[0031] Reference Figure 1-Figure 5, the printing platform 212 is driven to rise and fall or rotate by rotating the lifting mechanism 3. When in the printing process, the powder is transported into the groove by the powder supply and leveling mechanism 4, and is printed and formed on the printing platform 212 by the laser forming system. After printing is completed, the printing platform 212 rises to the side away from the printing groove 211 until the powder in the printing groove 211 is exhausted, and then the semi-finished product on the printing platform 212 is post-processed by the mechanical processing device 5, thereby reducing the number of multiple clamping of the semi-finished product and improving the production efficiency and forming accuracy of the printed parts; at the same time, when the parts are in the printing process and the post-processing process, the forming chamber 2 is separated by the sealing plate 24, thereby reducing the possibility of mixing the printing powder with the debris after cutting.

[0032] Reference Figure 5 and Figure 6 The rotary lifting mechanism 3 includes a lifting column 31, a rotating column 32, a first driving member 33 and a second driving member 34. The lifting column 31 is slidably connected to the machine body 1 in the vertical direction. The printing platform 212 is rotatably connected to the lifting column 31 in the vertical direction. The cross section of the lifting column 31 in the sliding direction is polygonal. The rotating column 32 is penetrated and rotatably connected to the lifting column 31. The rotating column 32 is coaxially and fixedly connected to the printing platform 212. The first driving member 33 is used to drive the sliding of the lifting column 31, and the second driving member 34 is used to drive the rotation of the rotating column 32. The lifting column 31 is driven to slide by the first driving member 33, and the rotating column 32 is driven to rotate by the second driving member 34, so that the printing platform 212 can be rotated and lifted respectively, so as to facilitate the printing and post-processing of the parts on the printing platform 212, thereby improving the production efficiency and molding accuracy of the printed parts.

[0033] Reference Figure 5 and Figure 6 The first driving member 33 includes a first motor 331 and a first threaded rod 332. The first motor 331 is fixedly connected to the machine body 1. The first threaded rod 332 is rotatably connected to the machine body 1 along the vertical direction. One end of the first threaded rod 332 is penetrated and threadedly connected to the lifting column 31. One end of the output shaft of the first motor 331 is coaxially and fixedly connected to the threaded rod. The first motor 331 is used to drive the rotation of the first threaded rod 332; the second driving member 34 includes a second motor 341. A sliding plate 52342 is slidably connected to the machine body 1. The second motor 341 is fixedly connected to the sliding plate 52342. One end of the output shaft of the second motor 341 is coaxially and fixedly connected to the first gear 343. The second gear 344 is coaxially and fixedly connected to the rotating column 32. The first gear 343 is meshed with the second gear 344. When the printing platform 212 slides, the sliding seat slides with the printing platform.

[0034] Reference Figure 1-Figure 5The powder supply and leveling mechanism 4 includes a powder scraper plate 41, a powder supply platform 42, a third driving member 43 and a fourth driving member 44. A powder supply groove 221 is provided at the bottom of the powder supply bin 22. The powder supply platform 42 is slidably connected in the powder supply groove 221 along the vertical direction. A powder collecting groove 214 is provided in the printing bin 21. The powder collecting groove 214 is connected to the powder supply platform 42 through a pipeline. The third driving member 43 is used to drive the sliding of the powder supply platform 42. The powder scraper plate 41 is slidably connected to the machine body 1 along the horizontal direction. The powder supply groove 221, the printing groove 211 and the powder collecting groove 214 are all located on the moving path of the powder scraper plate 41. The fourth driving member 44 is used to drive the sliding of the powder scraper plate 41. The powder supply platform 42 is driven to slide by the third driving member 43 to push the powder in the powder supply slot 221 into the powder supply bin 22, and then the powder scraper plate 41 is driven to slide by the fourth driving member 44 to push the powder in the powder supply bin 22 into the printing slot 211, and the powder pushed into the printing slot 211 is scraped flat, and the excess powder is pushed into the powder collecting slot 214 for recovery.

[0035] Reference Figure 1-Figure 5 The third driving member 43 includes an electric cylinder 431, which is fixedly connected to the machine body 1. One end of the piston rod of the electric cylinder 431 passes through the machine body 1 and is fixedly connected to the powder supply platform 42; the fourth driving member 44 includes a chain plate 441, a plurality of transmission wheels 442 and a fourth motor 443. The plurality of transmission wheels 442 are respectively connected to the machine body 1 in a vertical direction. The chain plate 441 is connected to the machine body 1 in a transmission manner, and the chain plate 441 is wound around the plurality of transmission wheels 442 at the same time. The powder scraper 41 is fixedly connected to the chain plate 441. The fourth motor 443 is fixedly connected to the machine body 1. One end of the output shaft of the fourth motor 443 is coaxial and fixedly connected to any transmission wheel 442.

[0036] Reference Figure 1-Figure 5 The mechanical processing device 5 includes a sliding seat 51, a sliding seat, a rotating frame 53, a tool holder 54 and a driving assembly 55. The sliding seat is connected to the post-processing chamber 23 in a sliding manner in a horizontal direction. The sliding seat is connected to the sliding seat 51 in a sliding direction perpendicular to the sliding seat 51. The rotating frame 53 is connected to the sliding seat in a horizontal direction. The tool holder 54 is connected to the rotating frame 53 in a rotating manner. The driving assembly 55 is used to drive the sliding seat 51, the sliding seat, the rotating frame 53 and the tool holder 54 to move respectively. The driving assembly 55 drives the sliding seat 51, the sliding seat and the rotating frame 53 to move respectively, and forms a five-axis motion together with the lifting and rotation of the printing platform 212, so as to facilitate cutting and surface treatment of the printed parts on the printing platform 212, reduce the number of clamping times of the printed parts, and improve the production efficiency and molding accuracy of the printed parts.

[0037] Reference Figure 1-Figure 5The driving assembly 55 includes a fifth motor, a fifth screw, a sixth motor, a sixth screw, a seventh motor and an eighth motor 551; the fifth screw is rotatably connected to the machine body 1, the fifth screw is penetrated and threadedly connected to the sliding seat, the fifth motor is fixedly connected to the machine body 1, and one end of the output shaft of the fifth motor is coaxially and fixedly connected to the fifth screw; the sixth screw is rotatably connected to the sliding seat, the sixth screw is penetrated and threadedly connected to the sliding seat, the sixth motor is fixedly connected to the sliding seat, and one end of the output shaft of the sixth motor is coaxially and fixedly connected to the sixth screw; the seventh motor is fixedly connected to the sliding seat, one end of the output shaft of the seventh motor is penetrated and fixedly connected to the rotating frame 53, the eighth motor 551 is fixedly connected to the rotating frame 53, and one end of the output shaft of the eighth motor 551 is penetrated and fixedly connected to the tool holder 54.

[0038] Reference Figure 1-Figure 5 A waste trough 213 is also provided in the printing chamber 21, and the waste trough 213 surrounds the printing trough 211. A plurality of baffles 215 are slidably connected to the machine body 1. When the forming chamber 2 is in the printing process, the baffles 215 cover the waste trough 213 and expose the powder collecting trough 214. When the forming chamber 2 is in the other post-processing process, the baffles 215 cover the powder collecting trough 214 and expose the waste trough 213. The printing powder is recycled separately from the scraps after cutting, which reduces the possibility of mixing the printing powder with the scraps after cutting, and facilitates the recycling and cleaning of the printing powder and the scraps after cutting.

[0039] Reference Figure 1-Figure 5 , and also includes a driving device 6, which is used to simultaneously drive the sliding of multiple sealing plates 24 and baffles 215. The sealing plates 24 include a first sealing plate 242 and a second sealing plate 242. The first sealing plate 242 and the second sealing plate 242 are respectively slidably connected to the printing chamber 21 along the vertical direction. The first sealing plate 242 is used to separate the printing chamber 21 and the powder supply chamber 22, and the second sealing plate 242 is used to separate the printing chamber 21 and the post-processing chamber 23. When the forming chamber 2 is in the printing process, the second sealing plate 242 moves to abut against the printing chamber 21. When the forming chamber 2 is in the post-processing process, the first sealing plate 242 moves to abut against the printing chamber 21. The first sealing plate 242, the second sealing plate 242 and the baffle 215 are driven to slide simultaneously by the driving device 6, so that the powder supply bin 22 and the powder collecting trough 214 are opened synchronously, or the post-processing bin 23 and the waste trough 213 are opened synchronously, so that the printing process and the post-processing process are carried out separately, and the printing powder and the post-cutting debris can be processed separately.

[0040] Reference Figure 1-Figure 5The driving device 6 includes a plurality of driving screws 61 and a driving motor 62. The plurality of driving screws 61 are respectively connected to the machine body 1 in a vertical direction. The plurality of driving screws 61 correspond to the first sealing plate 242 and the second sealing plate 242 respectively. The plurality of screws are respectively penetrated and threadedly connected to the first sealing plate 242 or the second sealing plate 242. The thread directions of the driving screws 61 threadedly connected to the first sealing plate 242 and the driving screws 61 threadedly connected to the second sealing plate 242 are opposite. The plurality of driving screws 61 are respectively coaxially and fixedly connected with the first bevel gears 63. The machine body 1 is rotatably connected with a connecting rod 64. A plurality of second bevel gears 65 are coaxially and fixedly connected to the connecting rod 64, and the plurality of second bevel gears 65 correspond to the plurality of first bevel gears 63 respectively, and the plurality of second bevel gears 65 are respectively meshed and connected with the corresponding first bevel gears 63; a third gear is coaxially and fixedly connected to the connecting rod 64; a rack is fixedly connected to any baffle 215, and the third gear is meshed and connected with the rack; inclined rods are respectively fixedly connected to the plurality of baffles 215, and the plurality of inclined rods are respectively penetrated and slidably connected to adjacent baffles 215; a driving motor 62 is fixedly connected to the machine body 1, and one end of an output shaft of the driving motor 62 is coaxially and fixedly connected to the connecting rod 64.

[0041] Reference Figure 1-Figure 5 , the driving motor 62 rotates the connecting rod 64, thereby causing the second bevel gears 65 and the third gear to rotate together, and through the meshing connection between the second bevel gear 65 and the first bevel gear 63, the first bevel gear 63 and the driving screw 61 rotate together, so that the first sealing plate 242 and the second sealing plate 242 move along the axial direction of the corresponding driving screw 61, thereby realizing the lifting and lowering of the first sealing plate 242 and the second sealing plate 242; at the same time, the meshing connection between the third gear and the rack causes the rack to slide, thereby driving the baffle 215 fixedly connected to the rack to slide, and the friction force of the inclined rod drives the adjacent baffles 215 to slide, so that multiple baffles 215 slide synchronously.

[0042] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A SLM printing device with a part post-processing device, characterized in that: The invention comprises a machine body (1) with a forming chamber (2) and a rotating lifting mechanism (3), wherein a plurality of sealing plates (24) are respectively slidably arranged in the forming chamber (2), and the plurality of sealing plates (24) respectively separate the forming chamber (2) into a printing chamber (21), a powder supply chamber (22) and a post-processing chamber (23), a printing slot (211) is provided at the bottom of the printing chamber (21), a printing platform (212) is movably connected in the printing slot (211), and the rotating lifting mechanism (3) is used to drive the sliding and rotation of the printing platform (212), and the printing A laser forming system for printing and forming is provided on the top of the bin (21), a powder supply and leveling mechanism (4) for supplying powder is provided in the powder supply bin (22), and a mechanical processing device (5) for milling formed parts is provided in the post-processing bin (23). When the machine body (1) is in a printing working state, a plurality of sealing plates (24) move to the printing bin (21) and are connected to the powder supply bin (22); when the machine body (1) is in a post-processing working state, a plurality of sealing plates (24) move to the post-processing bin (23) and are connected to the powder supply bin (22).

2. The SLM printing device with a part post-processing device according to claim 1, characterized in that: The rotary lifting mechanism (3) comprises a lifting column (31), a rotating column (32), a first driving member (33) and a second driving member (34); the lifting column (31) is slidably connected to the machine body (1) in a vertical direction; the printing platform (212) is rotationally connected to the lifting column (31) in a vertical direction; the rotating column (32) is penetrated and rotationally connected to the lifting column (31); and the rotating column (32) is coaxially and fixedly connected to the printing platform (212); the first driving member (33) is used to drive the sliding of the lifting column (31); and the second driving member (34) is used to drive the rotation of the rotating column (32).

3. The SLM printing device with a part post-processing device according to claim 1, characterized in that: The powder supply and leveling mechanism (4) comprises a powder scraper plate (41), a powder supply platform (42), a third driving member (43) and a fourth driving member (44); a powder supply groove (221) is provided at the bottom of the powder supply bin (22); the powder supply platform (42) is slidably connected in the powder supply groove (221) in a vertical direction; a powder collecting groove (214) is provided in the printing bin (21); the powder collecting groove (214) is connected to the powder supply platform (42) through a pipeline; the third driving member (43) is used to drive the powder supply platform (42) to slide; the powder scraper plate (41) is slidably connected to the machine body (1) in a horizontal direction; the powder supply groove (221), the printing groove (211) and the powder collecting groove (214) are all located on the moving path of the powder scraper plate (41); and the fourth driving member (44) is used to drive the powder scraper plate (41) to slide.

4. The SLM printing device with a part post-processing device according to claim 3, characterized in that: The mechanical processing device (5) comprises a sliding seat (51), a sliding seat (52), a rotating frame (53), a tool holder (54) and a driving assembly (55); the sliding seat is connected to the post-processing chamber (23) in a sliding manner in a horizontal direction; the sliding seat (52) is connected to the sliding seat (51) in a sliding direction perpendicular to the sliding seat (51); the rotating frame (53) is connected to the sliding seat (52) in a horizontal direction; the tool holder (54) is connected to the rotating frame (53) in a rotating manner; and the driving assembly (55) is used to drive the sliding seat (51), the sliding seat (52), the rotating frame (53) and the tool holder (54) to move respectively.

5. The SLM printing device with a part post-processing device according to claim 4, characterized in that: A waste trough (213) is also provided in the printing chamber (21), and the waste trough (213) surrounds the printing trough (211). A plurality of baffles (215) are slidably connected to the machine body (1). When the forming chamber (2) is in a printing forming process, the baffles (215) cover the waste trough (213) and expose the powder collecting trough (214); when the forming chamber (2) is in other post-processing processes, the baffles (215) cover the powder collecting trough (214) and expose the waste trough (213).

6. The SLM printing device with a part post-processing device according to claim 5, characterized in that: The invention also comprises a driving device (6), wherein the driving device (6) is used for driving a plurality of sealing plates (24) and baffles (215) to slide simultaneously, wherein the sealing plates (24) comprise a first sealing plate (241) and a second sealing plate (242), wherein the first sealing plate (241) and the second sealing plate (242) are respectively connected to the printing chamber (21) in a sliding manner in a vertical direction, wherein the first sealing plate (241) is used to separate the printing chamber (21) and the powder supply chamber (22), and the second sealing plate (242) is used to separate the printing chamber (21) and the post-processing chamber (23), and when the forming chamber (2) is in a printing process, the second sealing plate (242) moves to abut against the printing chamber (21), and when the forming chamber (2) is in a post-processing process, the first sealing plate (241) moves to abut against the printing chamber (21).

7. The SLM printing device with a parts post-processing device according to claim 6, characterized in that: The driving device (6) comprises a plurality of driving screws (61) and a driving motor (62). The plurality of driving screws (61) are respectively connected to the machine body (1) in a vertically rotatable manner. The plurality of driving screws (61) correspond to the first sealing plate (241) and the second sealing plate (242), respectively. The plurality of screws are respectively penetrated and threadedly connected to the first sealing plate (241) or the second sealing plate (242). The plurality of driving screws (61) are respectively coaxially and fixedly connected to a first bevel gear (63). The machine body (1) is rotatably connected to a connecting rod (64). The connecting rod (64) is coaxially and fixedly connected to a plurality of second bevel gears (65). If The second bevel gears (65) correspond to a plurality of first bevel gears (63), and the plurality of second bevel gears (65) are respectively meshed and connected with the corresponding first bevel gears (63). A third gear is coaxially and fixedly connected to the connecting rod (64). A rack is fixedly connected to any baffle (215), and the third gear is meshed and connected with the rack. A plurality of baffles (215) are respectively fixedly connected with inclined rods, and the plurality of inclined rods are respectively penetrated and slidably connected to adjacent baffles (215). The drive motor (62) is fixedly connected to the machine body (1), and one end of the output shaft of the drive motor (62) is coaxially and fixedly connected to the connecting rod (64).

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