A laser sintering device supporting online monitoring of a high-temperature working hot cavity

Abstract

The application discloses a kind of high-temperature work hot cavity's laser sintering equipment of adaptation supporting online monitoring, it is related to the technical field of laser sintering, it solves the problems that existing laser sintering equipment research adaptability is poor, structure is repeatedly difficult to assemble and disassemble, heating cavity volume is big, and upgrade maintenance is poor, including rack, equipment main body, powder supply structure, laser system, powder laying system, gas circulation system, waste powder collection system.Rack is as the installation datum and support of equipment, equipment main body can realize heating forming powder surface, detect the temperature of forming powder surface, the heat preservation function in cavity, powder supply system realizes the storage and supply function of processing powder, laser system realizes the function of laser sintering processing, powder laying system realizes the flattening function of processing powder, gas circulation system realizes the function of positive pressure blowing and negative pressure pumping, waste powder collection system realizes the function of collecting excess powder, the structure of the application is simple and stable, and sintering product quality uniformity is good.

Description

Technical Field

[0001] This invention relates to the field of laser sintering technology, and more particularly to a laser sintering device adapted to a high-temperature working hot cavity and supporting online monitoring. Background Technology

[0002] Selective laser sintering (SLS) is a molding technology that uses lasers to sinter powder, achieving layer-by-layer powder deposition to construct objects. Due to its versatility in printing materials and the elimination of the need for additional supports, this technology has numerous applications in fields such as automotive, aerospace, and cultural relic restoration. Primarily designed for small-batch, customized production, this technology avoids extensive mold design and fabrication, thus shortening the processing cycle of the parts.

[0003] Currently popular equipment often adopts a dual-cylinder or triple-cylinder laser sintering machine layout, which has a great impact on the structural layout. The operating space for workers to add powder and remove parts after processing is limited; the control of the temperature field structure is greatly restricted, which is reflected in the fact that the heating structure needs to be moved to make room for the forming cavity, resulting in a large internal space of the processing cavity; and there are certain defects in the cycle control of large-scale production.

[0004] In summary, existing laser sintering equipment suffers from poor adaptability, difficulty in repeated assembly and disassembly of its structure, large heating cavity volume, and poor upgrade and maintenance capabilities. Summary of the Invention

[0005] In response to the aforementioned problems of poor adaptability, difficulty in repeated assembly and disassembly of existing laser sintering equipment, large heating cavity volume, and poor upgrade and maintenance, the present invention aims to provide a laser sintering equipment with an adaptable high-temperature working hot cavity that supports online monitoring. This equipment aims to achieve preheating, processing, and waste powder recycling of the powder being processed, while reducing the size of the preheating cavity to achieve a higher heat preservation effect.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A laser sintering equipment with an adapted high-temperature working hot cavity that supports online monitoring includes: a frame 1, an equipment body 2, a powder supply system 3, a laser system 4, a powder spreading system 5, a gas circulation system 6, and a waste powder collection system 7. The equipment body 2 is mounted on the frame 1. The powder supply system 3, laser system 4, powder spreading system 5, gas circulation system 6, and waste powder collection system 7 are all mounted on the equipment body 2. A forming carriage can be pushed into or out of the frame 1.

[0008] The powder supply system 3 is used to supply powder to the forming position of the forming carriage, the laser system 4 is used to sinter the powder at the forming position, the gas circulation system 6 is used to purge the closed cavity with nitrogen to prevent oxidation of the printed parts, and the waste powder system 7 is used to collect waste powder.

[0009] It also includes: an imager 8, which is mounted on the main body 2 of the equipment. The imager 8 is used to image the forming position, and the image area is 220mm×220mm.

[0010] The aforementioned laser sintering equipment includes a frame 1 comprising: a frame body, support feet 1-1, casters 1-2, and a welding base plate 1-3. Each corner of the bottom side of the frame body is connected to a welding base plate 1-3, the bottom surface of each welding base plate 1-3 is connected to two support feet 1-1, and the bottom surface of each welding base plate 1-3 is connected to a caster 1-2.

[0011] The frame 1 also includes: V-shaped reference block 1-8 and positioning block 1-10. V-shaped reference block 1-8 is installed at one corner of the top rear side of the frame body, and positioning block 1-10 is installed at the other corner of the top rear side of the frame body.

[0012] The frame 1 also includes: a waste powder box support plate 1-11, a steel pipe 1-13, an upper limit block 1-14, an upper guide roller 1-15, a clamping cylinder 1-16, a cylinder fixing seat 1-17, a roller guide groove 1-18, a roller 1-19, a lower guide roller 1-20, and a lower limit block 1-21. Two waste powder box support plates 1-11 and two roller guide grooves 1-18 are symmetrically installed on the left and right sides of the middle of the frame body. Each roller guide groove 1-18 is located inside one waste powder box support plate 1-11. Each roller guide groove 1-18 is installed on the frame body through a steel pipe 1-13. A [missing information - likely a device or component] is installed at the bottom front end of the steel pipe. Each rubber roller 1-20 has a lower guide roller 1-20. Each rubber roller guide groove 1-18 has a rubber roller 1-19 installed inside. Each rubber roller guide groove 1-18 has a lower limit block 1-21 installed at the inner rear end. Each rubber roller guide groove 1-18 has another steel pipe 1-13 installed on the main frame above it. The upper limit block 1-14 is installed at the top rear end of the steel pipe 1-13 by bolts. The upper guide roller 1-15 is installed at the top front end of the steel pipe 1-13 by limit bolts and nuts. A cylinder fixing seat 1-17 is installed at the bottom side of the steel pipe 1-13. A clamping cylinder 1-16 is installed at the front side of the cylinder fixing seat 1-17.

[0013] The aforementioned laser sintering equipment has a frame body with a left-right symmetrical structure. The frame body includes: a first welded steel pipe 1-4, a second welded steel pipe 1-5, a third welded steel pipe 1-6, a fourth welded steel pipe 1-7, a fifth welded steel pipe 1-9, and a sixth welded steel pipe 1-12. The first welded steel pipe 1-4 located at the rear bottom and the first welded steel pipe 1-4 located at the rear top are connected by four second welded steel pipes 1-5 located at the rear. The first welded steel pipe 1-4 located at the front top and the first welded steel pipe 1-4 located at the rear top are connected by four third welded steel pipes 1-6 located at the top. The two sixth welded steel pipes 1-12 located at the front bottom are aligned in a straight line. The three first welded steel pipes 1-4 and the two sixth welded steel pipes 1-12 are parallel to each other. Welded steel pipe 1-12 and the first welded steel pipe 1-4 located at the rear bottom are connected by four third welded steel pipes 1-6 located at the bottom. Two sixth welded steel pipes 1-12 and the first welded steel pipe 1-4 located at the front top are connected by four second welded steel pipes 1-5 located at the front. Each third welded steel pipe 1-6 located at the top and a third welded steel pipe 1-6 located at the bottom are connected by a second welded steel pipe 1-5 located in the middle. The middle part of each second welded steel pipe 1-5 located in the middle and a second welded steel pipe 1-5 located at the front are connected by a fourth welded steel pipe 1-7. The upper part of each second welded steel pipe 1-5 located in the middle and on the inner side and a second welded steel pipe 1-5 located at the front are connected by a fifth welded steel pipe 1-9.

[0014] Each fifth welded steel pipe 1-9 is connected to a steel pipe 1-13 on its inner side. An upper limit block 1-14 is installed at the rear end of the steel pipe 1-13, an upper guide roller 1-15 is installed at the front end of the steel pipe 1-13, a cylinder fixing seat 1-17 is installed on the bottom side of the steel pipe 1-13, and a clamping cylinder 1-16 is installed on the front side of the cylinder fixing seat 1-17. Each fourth welded steel pipe 1-7 located on its inner side is connected to another steel pipe 1-13 on its inner side. The top side of the steel pipe 1-13 is equipped with a rubber roller guide groove 1-18, the rubber roller guide groove 1-18 is equipped with a rubber roller 1-19, the inner side of the rear end of the rubber roller guide groove 1-18 is equipped with a lower limit block 1-21, and the front end of the bottom side of the steel pipe 1-13 is equipped with a lower guide rubber wheel 1-20; a waste powder box support plate 1-11 is connected between the inner side of each fourth welded steel pipe 1-7 located on the outer side and the outer side of the fourth welded steel pipe 1-7 located on the inner side.

[0015] The aforementioned laser sintering equipment, wherein the main body 2 comprises:

[0016] The bottom side support limits the outer periphery of the top surface of the main body of the mounting frame. The bottom side support includes: a first welded steel pipe 2-1 and a second welded steel pipe 2-3. Both ends of each first welded steel pipe 2-1 are respectively connected to one end of a second welded steel pipe 2-3.

[0017] The mounting panel is connected to the inner periphery of the bottom bracket. The mounting panel includes a first base plate 2-8, a left base plate 2-9, a second base plate 2-12, and a right base plate 2-15, all of which are mounted on the top surface of the frame body. The first base plate 2-8 is located on the front side, the left base plate 2-9 and the right base plate 2-15 are located on the rear side, and the second base plate 2-12 is located between the left base plate 2-9 and the right base plate 2-15.

[0018] V-shaped seat 2-2 and positioning shaft seat 2-4 are installed on the bottom surface of the left base plate 2-9 and the positioning shaft seat 2-4 is installed on the bottom surface of the right base plate 2-15. V-shaped seat 2-2 is limited and connected to V-shaped reference block 1-8, and positioning shaft seat 2-4 is limited and connected to positioning block 1-10.

[0019] Left fixing plate 2-10, lower fixing plate 2-11, upper fixing plate 2-13 and right fixing plate 2-14, the left fixing plate 2-10 is installed on the inner edge of the left base plate 2-9, the right fixing plate 2-14 is installed on the inner edge of the right base plate 2-15, the lower fixing plate 2-11 is installed on the inner edge of the first base plate 2-8, and the upper fixing plate 2-13 is installed on the inner edge of the second base plate 2-12;

[0020] The bottom sides of the pad block 2-16 and the long V block 2-5, the left fixing plate 2-10 and the right fixing plate 2-14 are all equipped with pad blocks 2-16, and three long V blocks 2-5 are installed on the bottom side of each pad block 2-16. The molded car is positioned by the multiple long V blocks 2-5.

[0021] Clamping plates 2-7 and rubber wheels 2-6 are installed at both ends of the bottom surface of the upper fixing plate 2-13. Two parallel clamping plates 2-7 are installed between the two clamping plates 2-7 located at any end of the upper fixing plate 2-13.

[0022] Support columns 2-17, upright columns 2-31 and I-type support columns 2-32 are provided. Each corner of the top surface of the mounting panel is equipped with a support column 2-17. An upright column 2-31 is installed on the left and right sides of the top surface of the mounting panel. Two I-type support columns 2-32 are installed on the rear side of the mounting panel.

[0023] Vertical beams 2-18, horizontal beams 2-24, and thick horizontal beams 2-30 are arranged. The two vertical beams 2-18 are symmetrically arranged on the left and right. One end of each vertical beam 2-18 is connected to a support column 2-17 located on the front side, and the other end of each vertical beam 2-18 is connected to a support column 2-17 located on the rear side. The two horizontal beams 2-24 are arranged in front and behind. One end of each horizontal beam 2-24 is connected to a support column 2-17 located on the left side, and the other end of each horizontal beam 2-24 is connected to a support column 2-17 located on the right side. One end of the thick horizontal beam 2-30 is connected to the middle of a vertical beam 2-18, and the other end of the thick horizontal beam 2-30 is connected to the middle of another vertical beam 2-18. The upper end of each vertical column 2-31 is connected to a vertical beam 2-18, and the upper ends of the two I-shaped support columns 2-32 are both connected to the horizontal beam 2-24 located on the rear side.

[0024] The system includes baffle 2-21, optical axis 2-25, box slider 2-28, and optical axis fixing seat 2-29. Two optical axis fixing seats 2-29 are installed on the thick crossbeam 2-30, and two optical axis fixing seats 2-29 are installed on the crossbeam 2-24 located on the rear side. Each optical axis fixing seat 2-29 is equipped with an optical axis 2-25, and a box slider 2-28 is slidably installed on each optical axis 2-25. The two baffles 2-21 are symmetrically arranged on the left and right sides. The rear end of each baffle 2-21 is connected to a box slider 2-28 on the crossbeam 2-24 located on the rear side, and the front end of each baffle 2-21 is connected to a box slider 2-28 on the thick crossbeam 2-30.

[0025] The rear baffle 2-26, the left baffle 2-22, and the right baffle 2-27 are mounted on the thick crossbeam 2-30. The rear ends of the left baffle 2-22 and the right baffle 2-27 abut against the crossbeam 2-24 located on the rear side, and the front ends of the left baffle 2-22 and the right baffle 2-27 are connected to the rear baffle 2-26.

[0026] The round heating tube 2-34 and the straight heating tube fixing sheet metal 2-23 are connected. The front end of the straight heating tube fixing sheet metal 2-23 is connected to the rear baffle 2-26. The rear end of the straight heating tube fixing sheet metal 2-23 is connected to the crossbeam 2-24 located on the rear side. The round heating tube 2-34 is installed on the bottom side of the straight heating tube fixing sheet metal 2-23.

[0027] The lower pressure sensor base 2-35, upper pressure sensor base 2-36, sheet metal window 2-37, air outlet sheet metal 2-38, lighting lamp 2-39, lamp holder 2-40, and oxygen sensor 2-41 are all installed on the front side of the rear baffle 2-26, and the lighting lamp 2-39 is installed on the lamp holder 2-40.

[0028] Support sheet metal 2-33 and lamp tube support sheet metal 2-42 are provided. The rear side of support sheet metal 2-33 is connected to the crossbeam 2-24 located on the rear side. Lamp tube support sheet metal 2-42 is installed on the front side of support sheet metal 2-33. Lamp tube support sheet metal 2-42 is installed on the inner side of rear baffle 2-26, left baffle 2-22 and right baffle 2-27. The four lamp tube support sheet metal 2-42 together form a rectangular ring structure.

[0029] The upper light tube 2-43, the lower light tube 2-44, the light tube fixing sheet metal 2-45, and the side plate sheet metal seat 2-46 are provided. Each light tube supporting sheet metal 2-42 has a side plate sheet metal seat 2-46 installed on its inner edge. Each side plate sheet metal seat 2-46 has an inclined light tube fixing sheet metal 2-45 installed on its side plate sheet metal seat 2-46. Each light tube fixing sheet metal 2-45 has an upper light tube 2-43 and a lower light tube 2-44 snapped onto its bottom surface.

[0030] The rear heat insulation panel 2-47, the first side heat insulation panel 2-59, the handle 2-60, the second side heat insulation panel 2-61, and the front heat insulation panel 2-71 are provided. The two ends of the rear heat insulation panel 2-47 are respectively installed on the two supporting columns 2-17 located on the front side. The rear heat insulation panel 2-47 is connected to the crossbeam 2-24 located on the front side. Each vertical beam 2-18 has a first side heat insulation panel 2-59 and a second side heat insulation panel 2-61 installed on the outside. The second side heat insulation panel 2-61 is located in front of the first side heat insulation panel 2-59. The two ends of the front heat insulation panel 2-71 are respectively installed on the two supporting columns 2-17 located on the rear side. The front heat insulation panel 2-71 is connected to the crossbeam 2-24 located on the rear side. The handle 2-60 is installed on the front heat insulation panel 2-71, the rear heat insulation panel 2-47, and the two first side heat insulation panels 2-59.

[0031] Air hole mounting base 2-62 and protective shell 2-48, one air hole mounting base 2-62 and two protective shells 2-48 are installed on each second side heat insulation plate 2-61;

[0032] The system includes a single-hole air-blowing seat 2-63, a long air-blowing seat 2-65, a first sensor fixing sheet metal 2-66, an acrylic door 2-68, and a fixing block 2-70. The long air-blowing seat 2-65 is installed in the upper middle part of the front heat insulation plate 2-71. The acrylic door 2-68 is closable and installed in the lower middle part of the front heat insulation plate 2-71. Two fixing blocks 2-70 are symmetrically installed in the middle of the front heat insulation plate 2-71 and are located between the long air-blowing seat 2-65 and the acrylic door 2-68. The first sensor fixing sheet metal 2-66 is installed in the middle of the front heat insulation plate 2-71 and is located between the two fixing blocks 2-70. Two single-hole air-blowing seats 2-63 are respectively installed at both ends of the front heat insulation plate 2-71.

[0033] Camera 2-67 and tracheal connector mounting base 2-69, camera 2-67 is mounted on first sensor mounting sheet metal 2-66, and multiple tracheal connector mounting bases 2-69 are mounted on each mounting block 2-70;

[0034] The top edges of the first upper heat insulation plate 2-51, the second upper heat insulation plate 2-52, and the first fixing block 2-72, the rear baffle 2-26, the left baffle 2-22, and the right baffle 2-27 are all connected to the edge of the first upper heat insulation plate 2-51. The two sides of the second upper heat insulation plate 2-52 are connected to the top edges of the left baffle 2-22 and the right baffle 2-27, respectively. Three first fixing blocks 2-72 are installed on the top edges of the left baffle 2-22 and the right baffle 2-27.

[0035] The near-infrared temperature sensor 2-53, the second sensor fixing sheet metal 2-55, the window mirror fixing kit 2-56, and the sensor support base 2-64 are provided. The second sensor fixing sheet metal 2-55 is installed on the first middle and upper heat insulation plate 2-51. The near-infrared temperature sensor 2-53 is installed on the second sensor fixing sheet metal 2-55. The sensor support base 2-64 is installed on the first middle and upper heat insulation plate 2-51 and is used to support the near-infrared temperature sensor 2-53. The window mirror fixing kit 2-56 is installed on the first middle and upper heat insulation plate 2-51.

[0036] The upper left heat insulation plate 2-50 and the upper right heat insulation plate 2-58 are symmetrically arranged on the left and right. The upper left heat insulation plate 2-50 and the upper right heat insulation plate 2-58 are both installed on the thick crossbeam 2-30 and the crossbeam 24 located on the front side.

[0037] Upper heat insulation plate 2-49 is installed on the thick crossbeam 2-30 and the crossbeam 2-24 located on the rear side;

[0038] A dual-axis cylinder 2-57 is installed on the upper left heat insulation plate 2-50 and the upper right heat insulation plate 2-58 respectively. The telescopic end of each dual-axis cylinder 2-57 is connected to the top side edge of a baffle 2-21.

[0039] The aforementioned laser sintering equipment, wherein the powder supply system 3 includes:

[0040] T-block 3-1, side clamping plate 3-2, and through-beam sensor 3-12. Both T-blocks 3-1 are installed on the top surface of the upper right heat insulation plate 2-58. One end of each side clamping plate 3-2 is connected to a T-block 3-1, and the other end of each side clamping plate 3-2 is connected to another T-block 3-1. Each side clamping plate 3-2 is equipped with an through-beam sensor 3-12.

[0041] The components include an outer fixing block 3-3, a quick clamp 3-4, a pad 3-5, a powder supply bin 3-6, and an adjusting slider 3-14. The bottom surface of the powder supply bin 3-6 and the pad 3-5 are connected by the outer fixing block 3-3. An adjusting slider 3-14 is installed at each end of the outer fixing block 3-3. The quick clamp 3-4 is used to connect two T-blocks 3-1, one outer fixing block 3-3, and two adjusting sliders 3-14.

[0042] Rotate the powder roller assembly 3-15, with both ends of the powder roller assembly 3-15 being rotatably connected to two T-blocks 3-1 respectively;

[0043] The motor support block 3-11, the motor positioning block 3-10, and the stepper motor 3-9 are respectively connected to two side clamps 3-2 at both ends of the motor support block 3-11. The motor positioning block 3-10 is installed on the motor support block 3-11, and the stepper motor 3-9 is installed on the motor positioning block 3-10.

[0044] The first driving pulley 3-17 and the first driven pulley 3-16 are mounted on the output shaft of the stepper motor 3-9 and the first driven pulley 3-16 is mounted on the rotating powder roller assembly 3-15.

[0045] Clamping block 3-13 is installed on the top surface of the upper right heat insulation plate 2-58 and is located between the two side clamping plates 3-2;

[0046] The hopper cover 3-7 and the second handle 3-8 are located on top of the powder supply hopper 3-6.

[0047] The aforementioned laser sintering equipment, wherein the laser system 4 includes:

[0048] Vertical profile 4-1, horizontal profile 4-3 and laser 4-2, the two vertical profiles 4-1 are respectively installed on the two vertical beams 2-18, each end of the horizontal profile 4-3 is connected to the top of a vertical profile 4-1, and the laser 4-2 is installed on the horizontal profile 4-3;

[0049] Incident light frame 4-4, mirror frame assembly 4-7 and exit mirror frame 4-8. Incident light frame 4-4 is mounted on horizontal profile 4-3. Mirror frame assembly 4-7 is mounted on incident light frame 4-4. Two exit mirror frames 4-8 are mounted on mirror frame assembly 4-7.

[0050] Optical path support base 4-9, optical path support plate 4-14 and wire harness sheet metal 4-11, the optical path support plate 4-14 is mounted on the first middle upper heat insulation plate 2-51 through two optical path support bases 4-9, and the wire harness sheet metal 4-11 is mounted on the optical path support plate 4-14.

[0051] Positioning strip 4-10, galvanometer fixing block 4-16, galvanometer 4-6, field lens 4-17 and scanning area 4-18. Positioning strip 4-10 is installed on optical path support plate 4-14. Galvanometer fixing block 4-16 is installed on one end of optical path support plate 4-14. Galvanometer 4-6 is installed on galvanometer fixing block 4-16. Field lens 4-17 is installed on galvanometer 4-6. Field lens 4-17 is located above window mirror fixing kit 2-56. The laser light path passing through field lens 4-17 forms scanning area 4-18 via window mirror fixing kit 2-56.

[0052] The second reflector assembly 4-12, the second exit mirror mount 4-13, and the beam expander assembly 4-15 are provided. The second exit mirror mount 4-13 is mounted on the optical path support plate 4-14, the second reflector assembly 4-12 is mounted on the second exit mirror mount 4-13, and the beam expander assembly 4-15 is mounted on the optical path support plate 4-14. The positioning strip 4-10 is used to position the second exit mirror mount 4-13 and the beam expander assembly 4-15.

[0053] The optical path protective shell 4-5 is installed above the optical path support plate 4-14. The positioning strip 4-10, wire harness sheet metal 4-11, second reflector group 4-12, second exit mirror mount 4-13, optical path support plate 4-14 and beam expander assembly 4-15 are all located inside the optical path protective shell 4-5.

[0054] The aforementioned laser sintering equipment, wherein the powder spreading system 5 includes:

[0055] A powder spreading device is slidably mounted on the first base plate 2-8;

[0056] The second bearing housing 5-34, the long shaft 5-33, and the second drive pulley 5-24 are mounted on the first base plate 2-8. The long shaft 5-33 is rotatably mounted on the second bearing housing 5-34, and the second drive pulley 5-24 is mounted on the long shaft 5-33.

[0057] The system includes a support side plate 5-4, a top support plate 5-5, a stepper motor 5-6, and a coupling 5-7. Two support side plates 5-4 are mounted on the second bearing housing 5-34. The two ends of the top support plate 5-5 are connected to the top ends of the two support side plates 5-4 respectively. The stepper motor 5-6 is mounted on the top support plate 5-5. The output shaft of the stepper motor 5-6 and the long shaft 5-33 are connected by the coupling 5-7. The stepper motor 5-6 is used to drive the second drive pulley 5-24 to rotate.

[0058] The system comprises a first bearing housing 5-18, a second driven pulley 5-20, a short shaft 5-21, and a synchronous belt 5-19. The first bearing housing 5-18 is mounted on the first base plate 2-8. The short shaft 5-21 is rotatably mounted on the first bearing housing 5-18. The second driven pulley 5-20 is mounted on the short shaft 5-21. The second driving pulley 5-24 and the second driven pulley 5-20 are connected by the toothed meshing of the synchronous belt 5-19.

[0059] Left positive limit switch 5-8, left origin limit switch 5-9, left negative limit switch 5-10, right negative limit switch 5-14, right origin limit switch 5-15, and right positive limit switch 5-16 are installed on the crossbeam 2-24 from left to right.

[0060] The aforementioned laser sintering equipment, wherein the powder spreading system 5 further includes: linear guide rail 5-22, guide rail 5-25, roller slider 5-26 and linear guide rail slider 5-1. Linear guide rail 5-22 and guide rail 5-25 are both mounted on the first base plate 2-8. Linear guide rail 5-22 and guide rail 5-25 are parallel to each other. Linear guide rail slider 5-1 is slidably mounted on linear guide rail 5-22, and roller slider 5-26 is slidably mounted on guide rail 5-25.

[0061] The powder spreading device includes: a base plate 5-23, side plates 5-2, a top plate 5-3, sealing felt blocks 5-32, and tensioning plates 5-31. Linear guide sliders 5-1 and roller sliders 5-26 are connected to the bottom surface of the base plate 5-23. Side plates 5-2 are installed on the left and right sides of the base plate 5-23. The top edges of the two side plates are connected to the top plate 5-3. The sealing felt blocks 5-32 are installed on the top plate 5-3. Two tensioning plates 5-31 are installed on each side plate 5-2.

[0062] The connection includes a support block 5-27, a scraper top plate 5-11, a scraper 5-28, a scraper support side plate 5-13, a scraper connecting plate 5-12, and a bearing 5-29. The bottom edge of the support block 5-27 is connected to the rear end of the bottom plate 5-23, and the top edge of the support block 5-27 is connected to the rear end of the top plate 5-3. The scraper top plate 5-11 and the scraper 5-28 are both mounted on the support block 5-27. The two scraper connecting plates 5-12 are respectively connected to the left and right sides of the scraper top plate 5-11. The two sides of the scraper support side plate 5-13 are respectively connected to the rear ends of the two scraper connecting plates 5-12. Two bearings 5-29 are mounted on the scraper support side plate 5-13, and the bearings 5-29 serve as support and guides.

[0063] The equipment includes a steel strip clamp 5-30, a steel strip sheet metal 5-35, and a steel strip 5-17. The steel strip clamp 5-30 is installed on the connecting support block 5-27. Each side plate 5-2 is equipped with a steel strip sheet metal 5-35. The two steel strip sheet metals 5-35 and the steel strip clamp 5-30 are connected by the steel strip 5-17. The main body 2 of the equipment also includes a felt strip 2-19 and a U-shaped felt 2-20. The outer periphery of the steel strip 5-17 is covered with U-shaped felt 2-20. The felt strip 2-19 is used to press the U-shaped felt 2-20.

[0064] In the aforementioned laser sintering equipment, gas connectors are installed on the single-hole air blowing seat 2-63, the air pipe connector fixing seat 2-69, and the air blowing hole fixing seat 2-62. The gas circulation system 6 includes:

[0065] The lower negative pressure pipe 6-1, the support pipe sheet metal 6-2, and the upper negative pressure pipe 6-3 are connected. One end of the lower negative pressure pipe 6-1 is connected to the negative pressure suction pipe, and the other end of the lower negative pressure pipe 6-1 is installed at the opening of the middle crossbeam 2-24. The lower negative pressure pipe 6-1 is installed on the upper heat insulation plate 2-49 through the support pipe sheet metal 6-2. The upper negative pressure pipe 6-3 is installed on the lower negative pressure pipe 6-1 through the support pipe sheet metal 6-2. One end of the upper negative pressure pipe 6-3 is connected to the negative pressure suction pipe, and the other end of the upper negative pressure pipe 6-3 is installed on the air outlet sheet metal 2-38 on the rear baffle 2-26.

[0066] Fixed cap 6-4, adjustable cap 6-5, and homemade wrench 6-6. The two fixed caps 6-4 are installed on the outside of the lower negative pressure pipe 6-1. The adjustable cap 6-5 is installed on the fixed cap 6-4 and located inside the lower negative pressure pipe 6-1. The homemade wrench 6-6 is connected to the adjustable cap 6-5. The homemade wrench 6-6 is used to adjust the position of the adjustable cap 6-5.

[0067] The waste powder system 7 includes: a waste powder box 7-1, quick clamps 7-2, and a waste powder fixing sheet metal 7-3. A waste powder fixing sheet metal 7-3 is installed on the left bottom plate 2-9 and the right bottom plate 2-15 respectively. The bottom of each waste powder fixing sheet metal 7-3 and a waste powder box 7-1 are detachably connected by two quick clamps 7-2.

[0068] The aforementioned laser sintering equipment, wherein the main body 2 of the equipment also includes: a cover plate 2-54, the cover plate 2-54 or the imager 8 is installed on the second upper heat insulation plate 2-52.

[0069] The present invention, by employing the above-mentioned technology, has the following positive effects compared with the prior art:

[0070] (1) In this invention, the overall modular design of the powder supply system in the laser sintering equipment allows for effective repeated installation and disassembly. When powder supply is not required, the system can be sealed by a baffle for a sealing test. (2) In this invention, the method of using a cylinder to move the baffle up and down can reduce the volume inside the cavity when the heating tube is preheating the powder surface, thereby improving the preheating efficiency. (3) In this invention, the heat insulation plates around the main body of the equipment and on the upper side are made of sheet metal + heat insulation plate + plate material, which allows for adjusting the thickness of the heat insulation plate to achieve the insulation effect at different temperatures. (4) In this invention, the simultaneous addition of a camera and a thermal imager 8 enables online monitoring of thermal images during the processing. (5) In this invention, the main body of the equipment and the frame are positioned by positioning blocks, enabling the hoisting of the frame and the main body of the equipment and the repeated disassembly and assembly of the entire machine. Attached Figure Description

[0071] Figure 1 This is a schematic diagram of the structure of a laser sintering device adapted to a high-temperature working hot cavity and supporting online monitoring, according to the present invention. Figure 2 This is a cross-sectional view of the frame portion of a laser sintering equipment adapted to a high-temperature working hot cavity and supporting online monitoring, according to the present invention. Figure 3 This is a cross-sectional view of the main support plate of the frame of a laser sintering equipment adapted to a high-temperature working hot cavity and supporting online monitoring, according to the present invention. Figure 4 This is a schematic diagram of the front structure of a laser sintering device with an adapted high-temperature working hot cavity that supports online monitoring, without an external heat insulation plate, according to the present invention. Figure 5 This is a cross-sectional view of a laser sintering apparatus with an adapted high-temperature working hot cavity that supports online monitoring, without an external heat insulation plate, according to the present invention. Figure 6 This is a schematic diagram of the rear structure of a laser sintering device with an adapted high-temperature working hot cavity that supports online monitoring, according to the present invention, including an external heat insulation plate. Figure 7 This is a schematic diagram of the front structure of a laser sintering device with an external heat insulation plate that supports online monitoring and is adapted to a high-temperature working hot cavity, according to the present invention. Figure 8 This is a top view of a laser sintering apparatus with an external heat insulation plate that supports online monitoring and is adapted to a high-temperature working hot cavity, according to the present invention. Figure 9 yes Figure 8 AA sectional view. Figure 10 yes Figure 8 BB cross-sectional view. Figure 11 This is a schematic diagram of the powder supply system of a laser sintering equipment with an adapted high-temperature working hot cavity that supports online monitoring, according to the present invention. Figure 12 yes Figure 11 A sectional view.

[0072] Figure 13This is a schematic diagram of the laser system layout structure of a laser sintering device with an adapted high-temperature working hot cavity that supports online monitoring, according to the present invention. Figure 14 This is a schematic diagram of the laser system post-system layout structure of a laser sintering equipment with an adapted high-temperature working hot cavity that supports online monitoring, according to the present invention. Figure 15 This is a schematic diagram of the laser system post-system layout structure of a laser sintering equipment with an adapted high-temperature working hot cavity that supports online monitoring, according to the present invention. Figure 16 yes Figure 15 A magnified view of a portion of the image. Figure 17 This is a cross-sectional view of the powder spreading system of a laser sintering equipment adapted to a high-temperature working hot cavity and supporting online monitoring, according to the present invention. Figure 18 This is a schematic diagram of the structure of a laser sintering device adapted to a high-temperature working hot cavity and supporting online monitoring, according to the present invention. Figure 19 This is a schematic diagram of the rear structure of a laser sintering device adapted to a high-temperature working hot cavity and supporting online monitoring, according to the present invention. Figure 20 yes Figure 19 A magnified view of a portion of the image. Figure 21 This is a schematic diagram of a single waste powder collection system for a laser sintering device with an adapted high-temperature working hot cavity that supports online monitoring, according to the present invention. Figure 22 This is an internal optical path diagram of a laser sintering device adapted to a high-temperature working hot cavity and supporting online monitoring, according to the present invention.

[0073] In the attached diagram: 1. Frame; 2. Main body of equipment; 3. Powder supply system; 4. Laser system; 5. Powder spreading system; 6. Gas circulation system; 7. Waste powder collection system; 1-1. Support feet; 1-2. Casters; 1-3. Welded base plate; 1-4. First welded steel pipe; 1-5. Second welded steel pipe; 1-6. Third welded steel pipe; 1-7. Fourth welded steel pipe; 1-8. V-shaped reference block; 1-9. Fifth welded steel pipe; 1-10. Positioning block; 1-11. Waste powder box support plate; 1-12. Sixth welded steel pipe; 1-13. Steel pipe; 1-14. Upper limit block; 1-15. Upper guide rubber wheel; 1-16. Clamping cylinder; 1-17. Cylinder fixing seat; 1-18. Rubber roller guide groove; 1-19. Rubber roller; 1 -20. Lower guide rubber wheel; 1-21. Lower limit block; 2-1. Main body first welded steel pipe; 2-2. V-shaped seat; 2-3. Main body second welded steel pipe; 2-4. Positioning shaft seat; 2-5. Long V-block; 2-6. Rubber wheel; 2-7. Clamping plate; 2-8. First base plate; 2-9. Left base plate; 2-10. Left fixing plate; 2-11. Lower fixing plate; 2-12. Second base plate; 2-13. Upper fixing plate; 2-14. Right fixing plate; 2-15. Right base plate; 2-16. Pad; 2-17. Support column; 2-18. Vertical beam; 2-19. Felt strip; 2-20. U-shaped felt; 2-21. Baffle; 2-22. Left baffle; 2-23. Straight heating tube fixing sheet metal; 2-24. Crossbeam; 2-2 5. Optical axis; 2-26. Rear baffle; 2-27. Right baffle; 2-28. Box slider; 2-29. Optical axis fixing seat; 2-30. Thick crossbeam; 2-31. Upright column; 2-32. I-shaped support column; 2-33. Support sheet metal; 2-34. Round heating tube; 2-35. Lower pressure sensor base; 2-36. Upper pressure sensor base; 2-37. Sheet metal window; 2-38. Air outlet sheet metal; 2-39. Lighting lamp; 2-40. Lamp holder; 2-41. Oxygen sensor; 2-42. Lamp tube support sheet metal; 2-43. Upper lamp tube; 2-44. Lower lamp tube; 2-45. Lamp tube fixing sheet metal; 2-46. Side plate sheet metal seat; 2-47. Rear heat insulation plate; 2-48. Protective shell; 2- 49. Upper heat insulation plate; 2-50. Upper left heat insulation plate; 2-51. First upper middle heat insulation plate; 2-52. Second upper middle heat insulation plate; 2-53. Near-infrared temperature sensor; 2-54. Cover plate; 2-55. Second sensor fixing sheet metal; 2-56. Window mirror fixing seat; 2-57. Dual-axis cylinder; 2-58. Upper right heat insulation plate; 2-59. First side heat insulation plate; 2-60. Handle; 2-61. Second side heat insulation plate; 2-62. Air hole fixing seat; 2-63. Single air hole seat; 2-64. Sensor support seat; 2-65. Long air hole seat; 2-66. First sensor fixing sheet metal; 2-67. Camera; 2-68. Acrylic door; 2-69. Air pipe connector fixing seat; 2-70. Fixing block;2-71. Front heat insulation plate; 2-72. First fixing block; 3-1. T-shaped block; 3-2. Side clamping plate; 3-3. Outer fixing block; 3-4. Quick clamp; 3-5. Pad plate; 3-6. Powder supply hopper; 3-7. Hopper cover; 3-8. Second handle; 3-9. Stepper motor; 3-10. Motor positioning block; 3-11. Motor support block; 3-12. Through-beam sensor; 3-13. Clamping block; 3-14. Adjusting slider; 3-15. Rotating powder roller assembly; 3-16. First driven pulley; 3-17. First driving pulley; 4-1. Vertical profile; 4-2. Laser; 4-3 4-4. Horizontal profile; 4-5. Incident beam frame; 4-6. Optical path protective shell; 4-7. Galvanometer; 4-8. Reflector frame assembly; 4-9. Exit mirror frame; 4-10. Optical path support base; 4-11. Positioning strip; 4-12. Wire harness sheet metal; 4-13. Second reflector assembly; 4-14. Second exit mirror base; 4-15. Optical path support plate; 4-16. Beam expander assembly; 4-17. Galvanometer fixing block; 4-18. Field lens; 4-19. Scanning area; 5-1. Linear guide slider; 5-2. Side plate; 5-3. Top plate; 5-4. Supporting side plate; 5-5. Top support plate; 5-6. Step 5-7. Gearbox; 5-8. Coupling; 5-9. Left positive limit switch; 5-10. Left origin limit switch; 5-11. Left negative limit switch; 5-12. Scraper top plate; 5-13. Scraper connecting plate; 5-14. Scraper support side plate; 5-15. Right negative limit switch; 5-16. Right origin limit switch; 5-17. Right positive limit switch; 5-18. Steel belt; 5-19. First bearing housing; 5-20. Synchronous belt; 5-21. Second driven pulley; 5-22. Short shaft; 5-23. Linear guide rail; 5-24. Base plate; 5-2 4. Second drive pulley; 5-25. Guide rail; 5-26. Roller slider; 5-27. Connecting support block; 5-28. Scraper; 5-29. Bearing; 5-30. Steel strip clamp; 5-31. Tensioning plate; 5-32. Sealing felt block; 5-33. Long shaft; 5-34. Second bearing seat; 5-35. Steel strip sheet metal; 6-1. Lower negative pressure pipe; 6-2. Support pipe sheet metal; 6-3. Upper negative pressure pipe; 6-4. Fixed cover; 6-5. Adjustable screw cap; 6-6. Homemade wrench; 7-1. Waste powder box; 7-2. Quick clamp; 7-3. Waste powder fixing sheet metal; 8. Imaging device. Detailed Implementation

[0074] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0075] Please refer to Figures 1 to 22As shown, a laser sintering device with an adapted high-temperature working hot cavity that supports online monitoring is illustrated. This laser sintering device includes a frame 1, a main body 2, a powder supply system 3, a laser system 4, a powder spreading system 5, a gas circulation system 6, a waste powder system 7, and a thermal imager 8. The main body 2 is mounted on the frame 1; the powder supply system 3, laser system 4, powder spreading system 5, gas circulation system 6, waste powder system 7, and thermal imager 8 are all mounted on the main body 2.

[0076] The frame 1 includes: first welded steel pipes 1-4, second welded steel pipes 1-5, third welded steel pipes 1-6, and sixth welded steel pipes 1-12. The three first welded steel pipes 1-4 are arranged horizontally, the twelve second welded steel pipes 1-5 are arranged vertically, and the eight third welded steel pipes 1-6 are arranged horizontally. The two ends of the twelve second welded steel pipes 1-5 are welded to the four positions of the first welded steel pipes 1-4, the middle of the third welded steel pipes 1-6, and both ends of the sixth welded steel pipes 1-12, respectively, forming a two-layer frame using welding technology. One side of the bottom steel pipe is disconnected for ease of assembly. The vehicle is pushed in; V-shaped reference blocks 1-8 and positioning blocks 1-10 are both installed on the frame 1. V-shaped reference blocks 1-8 and positioning blocks 1-10 are fixed at the two intersections of the first welded steel pipe 1-4 and the third welded steel pipe 1-6 on the upper rear side; the fourth welded steel pipe 1-7, the waste powder box support plate 1-11, and the steel pipe 1-13 are fixed to the middle of the second welded steel pipe 1-5 by welding. The two fourth welded steel pipes 1-7 are fixed to the upper middle part of the second welded steel pipe 1-5 by welding. The two waste powder box support plates 1-11 are fixed with bolts. Four fourth welded steel pipes 1-7 and four steel pipes 1-13 are fixed to the four inner fourth welded steel pipes 1-7 by bolts; upper limit blocks 1-14 and upper guide rubber wheels 1-15, two upper limit blocks 1-14 are fixed to the two upper steel pipes 1-13 by bolts, and the upper guide rubber wheels 1-15 are fixed to the two upper steel pipes 1-13 by plug bolts; clamping cylinders 1-16 and cylinder fixing seats 1-17, two cylinder fixing seats 1-17 are made of sheet metal and are fixed to the two upper steel pipes 1-13 by bolts; two clamping cylinders 1-1... 6. The clamping cylinder 1-16 is fixed to the two cylinder mounting seats 1-17 by bolts, and can clamp after the forming car is in place; the lower limit block 1-21 and the lower guide rubber wheel 1-20 are fixed to the two steel pipes 1-13 in the middle by bolts, and the lower guide rubber wheel 1-20 is fixed to the two steel pipes 1-13 in the middle by plug bolts; the rubber roller guide groove 1-18 and the rubber roller 1-19 are connected by plug bolts and nuts, and the rubber roller guide groove 1-18 is bolted to the steel pipe 1-13 in the middle;

[0077] The aforementioned laser sintering equipment, wherein the frame 1 further includes: casters 1-2, support feet 1-1 and welding base plates 1-3, the four casters 1-2 and the eight support feet 1-1 are fixed to the eight welding base plates 1-3 by bolts, the two welding base plates 1-3 are fixed by welding at the intersection of the first welding steel pipe 1-4 and the third welding steel pipe 1-6 at the bottom, and the two welding base plates 1-3 are fixed by welding at the intersection of the sixth welding steel pipe 1-12 and the third welding steel pipe 1-6 at the bottom;

[0078] The aforementioned laser sintering equipment includes a main body 2 fixed above a frame 1. The main body 2 comprises: a first welded steel pipe 2-1 and a second welded steel pipe 2-3. The two ends of the two horizontal first welded steel pipes 2-1 are fixed to the two ends of the two horizontal second welded steel pipes 2-3 by welding, providing support for the main body 2. A first base plate 2-8, a left base plate 2-9, a second base plate 2-12, and a right base plate 2-15 are also included. The first base plate 2-8, the left base plate 2-9, the second base plate 2-12, and the right base plate 2-15 are fixed to two first welded steel pipes 1-4 and four third welded steel pipes 1-6 on the upper part of the frame 1 by bolts. V-shaped seat 2-2 and positioning shaft seat 2-4 are connected. V-shaped seat 2-2 is fixed to the left base plate 2-9 by bolts and is positioned with V-shaped reference block 1-8. Positioning shaft seat 2-4 is fixed to the right base plate 2-15 by bolts and is positioned with positioning block 1-10, facilitating the installation and disassembly of the equipment body 2 and frame 1. Left fixing plate 2-10, lower fixing plate 2-11, upper fixing plate 2-13 and right fixing plate 2-14 are also connected. Left fixing plate 2-10 is connected to the left base plate 2-9 by bolts, lower fixing plate 2-11 is connected to the first base plate 2-8 by bolts, and upper fixing plate 2-13 is connected to the second base plate 2-14 by bolts. Plate 2-12 is connected, and the right fixed plate 2-14 is connected to the right base plate 2-15 by bolts; pad 2-16 and long V-block 2-5, two pads 2-16 are connected to the left fixed plate 2-10 and the right fixed plate 2-14 by bolts, and six long V-blocks 2-5 are connected to the two pads 2-16 by bolts; clamp plate 2-7 and rubber wheel 2-6, four rubber wheels are fixed between the four clamp plates 2-7 by a pair of plug screws, and clamp plate 2-7 is connected to the upper fixed plate 2-13 by bolts; support column 2-17, thick crossbeam 2-30, straight column 2-31, I-type support column 2- 32. Four supporting columns 2-17 are fixed to the outer sides of the first base plate 2-8, the left base plate 2-9, and the right base plate 2-15 respectively by bolts. Two vertical columns 2-31 are fixed to both sides of the first base plate 2-8 respectively. Two I-shaped supporting columns 2-32 are fixed to the left base plate 2-9 and the right base plate 2-15. Vertical beams 2-18, horizontal beams 2-24 and thick horizontal beams 2-30, two horizontal vertical beams 2-18 are connected to the four supporting columns 2-17 by bolts, two horizontal horizontal beams 2-24 are connected to the four supporting columns 2-17 by bolts, and thick horizontal beams 2-30 are fixed to the middle position of the two vertical beams 2-18 by bolts.The structure consists of baffle 2-21, optical axis 2-25, box slider 2-28, and optical axis fixing seat 2-29. The four optical axis fixing seats 2-29 are bolted to the thick crossbeam 2-30. Above the four optical axis fixing seats 2-29 are four movable box sliders 2-28, which are bolted to the left and right baffles 2-21, guiding the movement of the baffles 2-21. The three-layer structure of the rear baffle 2-26, left baffle 2-22, and right baffle 2-27 consists of sheet metal, heat insulation board, and Q235 sheet metal from the inside out. The rear baffle is bolted to the thick crossbeam 2-30, and one end of the left baffle 2-22 and right baffle 2-27 presses against the crossbeam 2-20. 4. One end is bolted to the rear baffle 2-26; the round heating tube 2-34 is fixed to the straight heating tube sheet metal 2-23, one end of the straight heating tube sheet metal 2-23 is fixed to the rear baffle 2-26 by bolts, and the other end is fixed to the rear crossbeam 2-24; the lower pressure sensor base 2-35, the upper pressure sensor base 2-36, the sheet metal window 2-37, the air outlet sheet metal 2-38, the lighting lamp 2-39, the lamp holder 2-40 and the oxygen sensor 2-41 are all fixed to the rear baffle 2-26 by bolts, and the lighting lamp 2-39 is hinged to the lamp holder 2-40;

[0079] The aforementioned laser sintering equipment, the main body 2 of the equipment further includes: a supporting sheet metal 2-33 and a lamp tube supporting sheet metal 2-42. The rear side of the supporting sheet metal 2-33 is bolted to the lamp tube supporting sheet metal 2-42, and its front side is bolted to the front crossbeam 2-24. The lamp tube supporting sheet metal 2-42 is bolted to a sandwich structure composed of sheet metal, heat insulation board, and Q235 sheet metal. Upper lamp tube 2-43, lower lamp tube 2-44, lamp tube fixing sheet metal 2-45, and lamp tube fixing sheet metal 2-46 are also included. The upper lamp tube 2-43 and lower lamp tube 2-44 are fixed to the side plate sheet metal seat 2- by means of clips. On 46, the side panel sheet metal seat 2-46 is fixed to the lamp tube fixing sheet metal 2-45 with bolts; rear heat insulation plate 2-47, first side heat insulation plate 2-59, handle 2-60, second side heat insulation plate 2-61, front heat insulation plate 2-71, the rear heat insulation plate 2-47 is fixed to the two rear crossbeams 2-24 with bolts, the two handles 2-60 are fixed to the rear heat insulation plate 2-47 with bolts, the first side heat insulation plate 2-59 and the second side heat insulation plate 2-61 are fixed to the vertical beams 2-18 on both sides with bolts, the two handles 2-60 are fixed to the first side heat insulation plate 2-59 with bolts, the front heat insulation plate 2- 71 is bolted to the two front crossbeams 2-24, and the two handles 2-60 are bolted to the front heat insulation plate 2-71; the air vent mounting base 2-62 and the protective shell 2-48 are evenly bolted to the second side heat insulation plate 2-61 on both sides; the single-hole air vent base 2-63, the long air vent base 2-65, the first sensor fixing sheet metal 2-66, the acrylic door 2-68 and the fixing block 2-70, the two single-hole air vent bases 2-63 are bolted to both sides of the front heat insulation plate 2-71, and the long air vent base 2-65 is bolted to both sides of the front heat insulation plate 2-71. 65 is fixed to the upper middle part of the front heat insulation plate 2-71 by bolts. Two fixing blocks 2-70 are fixed to the lower part of the long air blowing hole seat 2-65 on the heat insulation plate 2-71 by bolts. The first sensor fixing sheet metal 2-66 is fixed to the middle position of the front heat insulation plate 2-71 by bolts. The acrylic door 2-68 is connected to the front heat insulation plate 2-71 by hinge fixing. The camera 2-67 is fixed to the first sensor fixing sheet metal 2-66 by bolts. Several air pipe connector fixing seats 2-69 are fixed to the fixing block 2-70 by bolts.

[0080] The aforementioned laser sintering equipment, the main body 2 of the equipment, also includes: a first upper heat insulation plate 2-51, a second upper heat insulation plate 2-52, a cover plate 2-54, and a first fixing block 2-72. The first upper heat insulation plate 2-51 is fixed to the left baffle 2-22, the rear baffle 2-26, and the right baffle 2-27 by bolts. Six evenly distributed first fixing blocks 2-72 are fixed to the left baffle 2-22 and the right baffle 2-27 by bolts. The cover plate 2-54 is fixed to the second upper heat insulation plate 2-52 by bolts, leaving a certain space for subsequent monitoring by the heating imager 8; a near-infrared temperature sensor 2-53, a second sensor fixing sheet metal 2-55, a window mirror fixing kit 2-56, and a sensor support base 2-64. The second sensor fixing sheet metal 2-55 is fixed to the first upper heat insulation plate 2-51 by bolts. The near-infrared temperature sensor 2-53 is fixed to the second sensor fixing sheet metal 2-55 by bolts. The sensor support base 2-64 is fixed to the first upper heat insulation plate 2-51 by bolts to support the near-infrared temperature sensor 2-53. The window mirror fixing kit 2-56 is fixed to the first upper heat insulation plate 2-51 by bolts to realize the installation and clamping of the window mirror. The upper left heat insulation plate 2-50 and the upper right heat insulation plate 2-58 are three-layer sandwich: sheet metal-heat insulation plate-Q235 plate, which are fixed to the crossbeam 2-24 by bolts.

[0081] The aforementioned laser sintering equipment includes a powder supply system 3 fixed above the main body 2. The powder supply system 3 comprises: T-blocks 3-1, side clamps 3-2, and through-beam sensors 3-12. Two T-blocks 3-1 are bolted to the upper right heat insulation plate 2-58. The two ends of the two side clamps 3-2 rest on the T-blocks 3-1 and are bolted to them. The through-beam sensor 3-12 is bolted to the two side clamps 3-2. The equipment also includes an outer fixing block 3-3, quick clamps 3-4, a pad 3-5, a powder supply chamber 3-6, and an adjusting slider 3-14. One outer fixing block 3-3 connects the bottom outer edge of the powder supply chamber 3-6 to the pad 3-5 using external hexagonal bolts. The quick clamp 3-4 is bolted to the two T-blocks 3-1 and the adjusting slider 3-14. The fixed block 3-3 and the adjusting slider 3-14 are fixed to both ends of the outer fixed block 3-3 by four bolts; the rotating powder roller assembly 3-15 is fixed to the T-shaped blocks 3-1 on both sides by bearing connection, thereby achieving fixation at both ends and allowing rotation; the motor support block 3-11, the motor positioning block 3-10, and the stepper motor 3-9 are fixed to the two side clamping plates 3-2 by bolts, and the stepper motor 3-9 is fixed to the motor positioning block 3-10 by bolts; the first driving pulley 3-17 and the first driven pulley 3-16 are fixed to the output shaft of the stepper motor 3-9 by tension connection, and the first driven pulley 3-16 is fixed to the rotating powder roller assembly 3-15;

[0082] The aforementioned laser sintering equipment includes a laser system 4 fixed above the main body 2. The laser system 4 comprises: a vertical profile 4-1, a horizontal profile 4-3, and a laser 4-2. The two vertical profiles 4-1 are fixed to the vertical beams 2-18 on both sides by bolts. The horizontal profile 4-3 is fixed above the two vertical profiles 4-1 by bolts. The laser 4-2 is fixed to the horizontal profile 4-3 by bolts. The equipment also includes an incident light frame 4-4, a reflector frame assembly 4-7, and an exit mirror frame 4-8. The incident light frame 4-4 is fixed to the horizontal profile 4-3 by bolts. The reflector frame assembly 4-7 is fixed to the incident light frame 4-4 by bolts. The two exit mirror frames 4-8 are clamped to the reflector frame assembly 4-7 by bolts.

[0083] The laser system 4 of the aforementioned laser sintering equipment further includes: an optical path support 4-9, an optical path support plate 4-14, and a wire harness sheet metal 4-11. The optical path support 4-9 is bolted to the first upper heat insulation plate 2-51, and the optical path support plate 4-14 is bolted to the optical path support 4-9. The wire harness sheet metal 4-11 is bolted to the optical path support plate 4-14, serving as the routing for the galvanometer control line; a positioning strip 4-10; a galvanometer fixing block 4-16; a galvanometer 4-6; a field lens 4-17; and a scanning area 4-18. The positioning strip 4-10 is bolted to the optical path support plate 4-14, and the galvanometer fixing block 4-16 is bolted to the optical path support plate 4-14. At one end of the optical path support plate 4-14, the galvanometer 4-6 is fixed to the galvanometer fixing block 4-16 by bolts, and the field lens 4-17 is fixed to the galvanometer 4-6 by threads. The scanning area 4-18 is the area scanned out after the laser passes through the optical element. The second reflector group 4-12, the second exit mirror mount 4-13, and the beam expander assembly 4-15 are also present. The second reflector group 4-12 is fixed to the second exit mirror mount 4-13 by bolts. The second exit mirror mount 4-13 is positioned and fixed to the optical path support plate 4-14 by bolts through the positioning strip 4-10. The beam expander assembly 4-15 is positioned and fixed to the optical path support plate 4-14 by bolts through the positioning strip 4-10.

[0084] In the aforementioned laser sintering equipment, the powder spreading system 5 is fixed above the main body 2 of the equipment. The powder spreading system 5 includes: a linear guide rail 5-22, a guide rail 5-25, a roller slider 5-26, and a linear guide rail slider 5-1. The linear guide rail 5-22 is fixed to the first base plate 2-8 by bolts. The linear guide rail slider 5-1 slides on the linear guide rail 5-22 via ball bearings, and the roller slider 5-26 slides on the guide rail 5-25 via rollers. Other components include a base plate 5-23, side plates 5-2, a top plate 5-3, a sealing felt block 5-32, and a tensioning plate 5-3. 1. The base plate 5-23 is fixed to the roller slider 5-26 and the linear guide slider 5-1 by bolts. Two side plates 5-2 are bolted to the two sides of the base plate 5-23. The top plate 5-3 is bolted to the top of the two side plates 5-2. The sealing felt block 5-32 is bolted to the top plate 5-3. Four tensioning plates 5-31 are bolted to the two side plates 5-2 to achieve tension adjustment of the synchronous belt 5-19. Connecting support block 5-27 and scraper top plate 5-11. The scraper 5-28, scraper support side plate 5-13, and scraper connecting plate 5-12 are bolted together. Connecting support block 5-27 is fixed to one end face of base plate 5-23, two side plates 5-2, and top plate 5-3. Scraper top plate 5-11 is bolted to connecting support block 5-27. Scraper 5-28 is bolted to connecting support block 5-27. Two scraper connecting plates 5-12 are bolted to scraper top plate 5-11. Scraper support side plate 5-13 is bolted to one cross-section of the two scraper connecting plates 5-12. Two bearings 5-29 are fixed to the scraper support side plate 5-13 by bolts; steel strip clamp 5-30, steel strip sheet metal 5-35 and steel strip 5-17, steel strip clamp 5-30 is fixed to the connecting support block 5-27 by bolts, two steel strip sheet metals 5-35 are fixed to the side plate 5-2 by bolts, steel strip 5-17 is fixed and clamped to steel strip clamp 5-30 and steel strip sheet metal 5-35 by bolts, U-shaped felt 2-20 can block steel strip clamp 5-30, steel strip sheet metal 5-35 and steel strip 5-17 to form a sealed tension;

[0085] The aforementioned photo-sintering equipment, including the powder spreading system 5, further comprises: a second bearing housing 5-34, a long shaft 5-33, and a second drive pulley 5-24. The second bearing housing 5-34 is bolted to the first base plate 2-8. The long shaft 5-33 rotates via a bearing within the second bearing housing 5-34. The second drive pulley 5-24 is fixed to the long shaft 5-33 via a tensioning sleeve. Other components include a support side plate 5-4, a top support plate 5-5, and a stepper motor 5-6. Plate 5-4 is fixed to the side of the second bearing seat 5-34 by bolts. The top support plate 5-5 is positioned on the upper end of the two support side plates 5-4 by a boss and tightened by bolts. The stepper motor 5-6 is fixed to the top support plate 5-5 by bolts. The output shaft of the stepper motor 5-6 is connected to the long shaft 5-33 through the coupling 5-7 to realize the motor driving the active pulley. The first bearing seat 5-18, the second driven pulley 5-20, and the short shaft 5-21 are connected to the same... The first bearing housing 5-18 is bolted to the first base plate 2-8 via a step belt 5-19. The short shaft 5-21 is fixed to the first bearing housing 5-18 via a bearing connection. The second driven pulley 5-20 is fixed to the short shaft 5-21 via a tensioning sleeve. The synchronous belt 5-19 connects the second driven pulley 5-20 and the second driving pulley 5-24 together via toothed meshing. Left positive limit switch 5-8, left origin limit switch 5-9, and left negative limit switch... Limit switches 5-10, 5-14 (right negative limit switch), 5-15 (right origin limit switch), 5-16 (right positive limit switch), 5-8 (left positive limit switch), 5-9 (left origin limit switch), 5-10 (left negative limit switch), 5-14 (right negative limit switch), 5-15 (right origin limit switch), and 5-16 (right positive limit switch) are fixed to six positions on the crossbeam 2-24 with bolts, enabling detection at six positions.

[0086] In the aforementioned laser sintering equipment, the gas circulation system 6 is fixed above the main body 2. The gas circulation system 6 includes: a gas connector fixed to two single-hole air blowing seats 2-63 via threaded connections; ten gas pipe connector fixing seats 2-69; air blowing hole fixing seats 2-62; and nitrogen blowing to fill the cavity. It also includes a lower negative pressure pipe 6-1, a support pipe sheet metal 6-2, and an upper negative pressure pipe 6-3. One end of the lower negative pressure pipe 6-1 has a flange face for connecting to a negative pressure suction pipe, the middle end is fixed to the upper heat insulation plate 2-49, and the other end is fixed to the middle crossbeam 2-49. At the opening of 24, the support tube sheet metal 6-2 is fixed to the lower negative pressure tube 6-1 by bolts, and the upper negative pressure tube 6-3 is fixed by the support tube sheet metal 6-2. One end of the upper negative pressure tube 6-3 is connected to the negative pressure suction tube, and the other end is fixed to the air outlet sheet metal 2-38 on the rear baffle 2-26. The two fixed covers 6-4 are connected to the side of the lower negative pressure tube 6-1 by bolts. The adjustable cover 6-5 is inserted into the fixed cover 6-4 with a gap. The homemade wrench 6-6 is used to adjust the position of the adjustable cover 6-5.

[0087] The aforementioned laser sintering equipment includes a waste powder collection system 7 fixed below the main body 2. The waste powder collection system 7 comprises: a waste powder box 7-1, a quick clamp 7-2, and a waste powder fixing sheet metal 7-3. The two waste powder fixing sheet metals 7-3 are fixed to the left bottom plate 2-9 and the right bottom plate 2-15 by bolts. The two waste powder boxes 7-1 are clamped and released by four quick clamps 7-2. The imager 8 is fixed by removing the cover plate 2-54 and using an adapter to fix the thermal imager 8.

[0088] In a further embodiment of the present invention, the frame serves as the installation reference and support for the equipment. The main body of the equipment can realize the heating and forming of powder surface, detect the temperature of the formed powder surface, and the internal heat preservation function of the cavity. The powder supply system realizes the storage and supply function of the processed powder. The laser system realizes the laser sintering function. The powder spreading system realizes the spreading function of the processed powder. The gas circulation system realizes the positive pressure blowing and negative pressure suction functions. The waste powder collection system realizes the collection function of excess powder. The present invention has a simple and stable structure, and the sintered product has good uniformity.

[0089] In a further embodiment of the present invention, Figure 18The diagram shows the left and right limit positions of the powder spreading device. The powder spreading device is slidably mounted on the first base plate 2-8 via linear guides 5-22 and 5-25. It is driven to slide along linear guides 5-22 and 5-25 by a stepper motor 5-6, coupling 5-7, and synchronous belt 5-19. Left positive limit switch 5-8, left origin limit switch 5-9, left negative limit switch 5-10, right negative limit switch 5-14, right origin limit switch 5-15, and right positive limit switch 5-16 are all used to position the powder spreading device. The powder spreading system 5... Figure 17 As shown, the powder spreading device drives the scraper 5-28 to slide along the linear guide rail 5-22 and guide rail 5-25. The scraper 5-28 pushes the laser sintering powder at the forming position of the forming carriage to achieve the function of powder spreading.

[0090] In a further embodiment of the present invention, an adjusting slider 3-14 is movably installed inside the outer fixing block 3-3. The size of the mesh opening inside the outer fixing block 3-3 can be adjusted by adjusting the position of the adjusting slider 3-14 through the quick clamp 3-4, thereby adjusting the powder falling rate of the laser sintering powder in the powder supply bin 3-6. The stepper motor 3-9 drives the rotating powder roller assembly 3-15 to run. After passing through the rotating powder roller assembly 3-15, the laser sintering powder falls into the forming position of the forming carriage and is spread by the powder spreading device.

[0091] In a further embodiment of the present invention, gas connectors are installed on the single-hole air blowing seat 2-63, the air pipe connector fixing seat 2-69, and the air blowing hole fixing seat 2-62, for introducing nitrogen into the molding position of the molding cart, i.e., the inside of the equipment body 2. The lower negative pressure pipe 6-1 and the upper negative pressure pipe 6-3 are both connected to the inside of the equipment body 2, which plays a role in gas circulation. The position of the adjustable cap 6-5 is adjusted by adjusting the position of the self-made wrench 6-6, thereby adjusting the inner diameter of the lower negative pressure pipe 6-1, and thus adjusting the ventilation volume.

[0092] In a further embodiment of the present invention, the irradiation positions of the gas circulation system 6, the complete optical path, and the imager 8 are as follows: Figure 22 As shown, it can monitor the gas circulation and real-time processing at the forming position of the forming carriage below the main body 2 of the equipment.

[0093] In a further embodiment of the present invention, the upper limit block 1-14, the upper guide roller 1-15, the clamping cylinder 1-16, the cylinder fixing seat 1-17, the roller guide groove 1-18, the roller 1-19, the lower guide roller 1-20, and the lower limit block 1-21 are all used for positioning the forming carriage. The overall modularity of the powder supply system in the laser sintering equipment allows for effective repeated installation and disassembly. When powder supply is not required, the left baffle 2-22 and the right baffle 2-27 can be used to divide the interior of the main body 2 of the equipment into small closed cavities, facilitating sealing tests. The powder supply system 3 supplies powder to the forming position of the forming carriage, the laser system 4 sinters the powder at the forming position, the gas circulation system 6 purges nitrogen into the closed cavity to prevent oxidation of the printed parts, and the waste powder system 7 collects waste powder. The main body 2 and the frame 1 are positioned by V-shaped reference blocks 1-8, positioning shaft seats 2-4, positioning blocks 1-10, and V-shaped seats 2-2. The frame 1 and the main body 2 are hoisted for easy installation and separation. The powder supply system 3 drops the powder, and the powder spreading system 5 spreads the dropped powder onto the forming position of the forming carriage.

[0094] In a further embodiment of the present invention, two dual-axis cylinders 2-57 are used to push two baffles 2-21 up and down respectively. This can reduce the internal volume of the cavity when the heating tube is preheating the powder surface, thereby improving the preheating efficiency. The main body 2 and the frame 1 are positioned by positioning blocks, which can realize the hoisting of the frame and the main body of the equipment, and realize repeated disassembly and assembly of the whole machine. Each part of the main body 2 is equipped with handles 2-60 for easy carrying. The frame 1, the main body 2, the powder supply system 3, the laser system 4, the powder spreading system 5, the gas circulation system 6, and the waste powder collection system 7 are all set separately and modularly assembled, which can effectively be repeatedly installed and disassembled.

[0095] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser sintering apparatus supporting online monitoring of an adapted hot chamber for high temperature operation, characterized in that It comprises a rack (1), a device main body (2), a powder supply system (3), a laser system (4), a powder laying system (5), a gas circulation system (6) and a waste powder collection system (7), the device main body (2) is installed on the rack (1); the powder supply system (3), the laser system (4), the powder laying system (5), the gas circulation system (6) and the waste powder collection system (7) are all installed on the device main body (2); It also comprises an imager (8), which is installed on the device main body (2); The device main body is used for heating the shaped powder surface, detecting the temperature of the shaped powder surface and keeping warm inside the cavity, the powder supply system realizes the storage and supply function of the processing powder, the laser system is used for sintering the powder at the shaping position, realizes the laser sintering processing, the powder laying system is used for realizing the flattening function of the processing powder, the gas circulation system is used for positive pressure blowing and negative pressure pumping, and the waste powder collection system is used for collecting the excess powder; Through the gas circulation system (6), the complete light path and the irradiation position design of the imager (8), the gas circulation of the shaping position of the shaping vehicle below the device main body (2) and the real-time processing monitoring are realized; The powder supply system is modularized as a whole, the way that the air cylinder drives the baffle to move up and down is adopted to realize the reduction of the volume inside the cavity when the heating pipe preheats the processing powder surface; the heat insulation plates around and above the device main body adopt the combination of sheet metal + heat insulation plate + plate material, and the thickness of the heat insulation plate can be adjusted to realize the heat preservation effect at different temperatures; the device main body and the rack are positioned by positioning blocks, the hoisting of the rack and the device main body can be realized, and the repeated disassembly and assembly of the whole machine can be realized. The rack (1) comprises a rack main body, support foot bases (1-1), casters (1-2) and welded bottom plates (1-3), each corner of the bottom side of the rack main body is connected with a welded bottom plate (1-3), the bottom surface of each welded bottom plate (1-3) is connected with two support foot bases (1-1), and the bottom surface of each welded bottom plate (1-3) is connected with a caster (1-2); 2. The laser sintering apparatus with an adapted hot chamber for online monitoring according to claim 1, characterized in that The rack (1) further comprises a V-shaped reference block (1-8) and a positioning block (1-10), the V-shaped reference block (1-8) is installed at one corner of the top rear side of the rack main body, and the positioning block (1-10) is installed at the other corner of the top rear side of the rack main body; ​ The rack (1) further comprises: a waste powder box support plate (1-11), a steel pipe (1-13), an upper limiting block (1-14), an upper guide rubber wheel (1-15), a clamping air cylinder (1-16), an air cylinder fixing seat (1-17), a rubber roller guide groove (1-18), a rubber roller (1-19), a lower guide rubber wheel (1-20) and a lower limiting block (1-21), two waste powder box support plates (1-11) and two rubber roller guide grooves (1-18) are symmetrically installed at the middle part of the left and right of the rack body, each rubber roller guide groove (1-18) is arranged at the inner side of a waste powder box support plate (1-11), each rubber roller guide groove (1-18) is installed on the rack body through a steel pipe (1-13), the bottom side of the steel pipe is provided with a lower guide rubber wheel (1-20), each rubber roller guide groove (1-18) is provided with a rubber roller (1-19), the inner side of each rubber roller guide groove (1-18) is provided with a lower limiting block (1-21), the upper side of each rubber roller guide groove (1-18) is provided with another steel pipe (1-13) installed on the rack body, the top side of the steel pipe (1-13) is provided with an upper limiting block (1-14), the top side of the steel pipe (1-13) is provided with an upper guide rubber wheel (1-15), the bottom side of the steel pipe (1-13) is provided with an air cylinder fixing seat (1-17), the front side of the air cylinder fixing seat (1-17) is provided with a clamping air cylinder (1-16).

3. The laser sintering apparatus with an adapted hot chamber for online monitoring according to claim 2, characterized in that The rack body is left-right symmetrical structure, the rack body includes: first welded steel pipe (1-4), second welded steel pipe (1-5), third welded steel pipe (1-6), fourth welded steel pipe (1-7), fifth welded steel pipe (1-9) and sixth welded steel pipe (1-12), the first welded steel pipe (1-4) located at the bottom of the rear side and the first welded steel pipe (1-4) located at the top of the rear side are connected by four second welded steel pipes (1-5) located at the rear side, the first welded steel pipe (1-4) located at the top of the front side and the first welded steel pipe (1-4) located at the top of the rear side are connected by four third welded steel pipes (1-6) located at the top side, the two sixth welded steel pipes (1-12) located at the bottom of the front side are located on the same straight line, the three first welded steel pipes (1-4) and the two sixth welded steel pipes (1-12) are parallel to each other, the two sixth welded steel pipes (1-12) and the first welded steel pipe (1-4) located at the bottom of the rear side are connected by four third welded steel pipes (1-6) located at the bottom side, the two sixth welded steel pipes (1-12) and the first welded steel pipe (1-4) located at the top of the front side are connected by four second welded steel pipes (1-5) located at the front side, each third welded steel pipe (1-6) located at the top side and a third welded steel pipe (1-6) located at the bottom side are connected by a second welded steel pipe (1-5) located at the middle, the middle of each second welded steel pipe (1-5) located at the middle and a second welded steel pipe (1-5) located at the front side are connected by a fourth welded steel pipe (1-7), the upper part of each second welded steel pipe (1-5) located at the middle and located at the inner side and a second welded steel pipe (1-5) located at the front side are connected by a fifth welded steel pipe (1-9); The inner side of each fifth welded steel pipe (1-9) is connected with a steel pipe (1-13), the rear end of the steel pipe (1-13) is provided with an upper limit block (1-14), the front end of the steel pipe (1-13) is provided with an upper guide rubber wheel (1-15), the bottom side of the steel pipe (1-13) is provided with a cylinder fixing seat (1-17), the front side of the cylinder fixing seat (1-17) is provided with a clamping cylinder (1-16); the inner side of each fourth welded steel pipe (1-7) located at the inner side is connected with another steel pipe (1-13), the top side of the steel pipe (1-13) is provided with a rubber roller guide groove (1-18), the rubber roller guide groove (1-18) is provided with a rubber roller (1-19), the rear end inner side of the rubber roller guide groove (1-18) is provided with a lower limit block (1-21), the bottom side front end of the steel pipe (1-13) is provided with a lower guide rubber wheel (1-20); a waste powder box support plate (1-11) is connected between the inner side of each fourth welded steel pipe (1-7) located at the outer side and the outer side of the fourth welded steel pipe (1-7) located at the inner side.

4. The laser sintering apparatus with an adaptive high-temperature working hot chamber supporting online monitoring according to claim 2, characterized in that, The equipment body (2) includes: The bottom side support limits the installation of the outer periphery of the top surface of the main body of the rack, and comprises: a main body first welded steel pipe (2-1) and a main body second welded steel pipe (2-3), and the two ends of each main body first welded steel pipe (2-1) are connected with one end of one main body second welded steel pipe (2-3) respectively; The outer periphery of the mounting panel is connected with the inner periphery of the bottom side support, and the mounting panel comprises: a first bottom plate (2-8), a left bottom plate (2-9), a second bottom plate (2-12) and a right bottom plate (2-15) which are all installed on the top surface of the main body of the rack, the first bottom plate (2-8) is located at the front side, the left bottom plate (2-9) and the right bottom plate (2-15) are located at the rear side, and the second bottom plate (2-12) is arranged between the left bottom plate (2-9) and the right bottom plate (2-15); A V-shaped seat (2-2) and a positioning shaft seat (2-4), the V-shaped seat (2-2) is installed on the bottom surface of the left bottom plate (2-9), the positioning shaft seat (2-4) is installed on the bottom surface of the right bottom plate (2-15), the V-shaped seat (2-2) is limitingly connected with the V-shaped reference block (1-8), and the positioning shaft seat (2-4) is limitingly connected with the positioning block (1-10); A left fixed plate (2-10), a lower fixed plate (2-11), an upper fixed plate (2-13) and a right fixed plate (2-14), the left fixed plate (2-10) is installed on the inner side edge of the left bottom plate (2-9), the right fixed plate (2-14) is installed on the inner side edge of the right bottom plate (2-15), the lower fixed plate (2-11) is installed on the inner side edge of the first bottom plate (2-8), and the upper fixed plate (2-13) is installed on the inner side edge of the second bottom plate (2-12); A cushion block (2-16) and a long V-shaped block (2-5), the bottom side of each of the left fixed plate (2-10) and the right fixed plate (2-14) is provided with the cushion block (2-16), and the bottom side of each cushion block (2-16) is provided with three long V-shaped blocks (2-5); A clamping plate (2-7) and a rubber wheel (2-6), two parallel clamping plates (2-7) are installed at the two ends of the bottom surface of the upper fixed plate (2-13), and two rubber wheels (2-6) are installed between the two clamping plates (2-7) at any one end of the upper fixed plate (2-13); A support column (2-17), a straight column (2-31) and an I-shaped support column (2-32), one support column (2-17) is installed at each corner of the top surface of the mounting panel, one straight column (2-31) is installed on the left and right sides of the top surface of the mounting panel, and two I-shaped support columns (2-32) are installed on the rear side of the mounting panel; Two vertical beams (2-18) are symmetrically arranged left and right, one end of each vertical beam (2-18) is connected with one support column (2-17) located at the front side, the other end of each vertical beam (2-18) is connected with one support column (2-17) located at the rear side, two horizontal beams (2-24) are arranged front and rear, one end of each horizontal beam (2-24) is connected with one support column (2-17) located at the left side, the other end of each horizontal beam (2-24) is connected with one support column (2-17) located at the right side, one end of the thick horizontal beam (2-30) is connected with the middle part of one vertical beam (2-18), the other end of the thick horizontal beam (2-30) is connected with the middle part of the other vertical beam (2-18), the upper end of each vertical column (2-31) is connected with one vertical beam (2-18), the upper ends of two I-shaped support columns (2-32) are connected with the horizontal beam (2-24) located at the rear side; Two baffle plates (2-21) are symmetrically arranged left and right, the rear end of each baffle plate (2-21) is connected with one box sliding block (2-28) on the horizontal beam (2-24) located at the rear side, the front end of each baffle plate (2-21) is connected with one box sliding block (2-28) on the thick horizontal beam (2-30), two optical shaft fixing seats (2-29) are arranged on the thick horizontal beam (2-30), two optical shafts (2-25) are arranged on each optical shaft fixing seat (2-29), one box sliding block (2-28) is slidably arranged on each optical shaft (2-25), two baffle plates (2-21) are symmetrically arranged left and right, the rear end of each baffle plate (2-21) is connected with one box sliding block (2-28) on the horizontal beam (2-24) located at the rear side, the front end of each baffle plate (2-21) is connected with one box sliding block (2-28) on the thick horizontal beam (2-30), two optical shaft fixing seats (2-29) are arranged on the thick horizontal beam (2-30), two optical shafts (2-25) are arranged on each optical shaft fixing seat (2-29), one box sliding block (2-28) is slidably arranged on each optical shaft (2-25); The rear baffle plate (2-26) is arranged on the thick horizontal beam (2-30), the rear ends of the left baffle plate (2-22) and the right baffle plate (2-27) abut against the horizontal beam (2-24) located at the rear side, and the front ends of the left baffle plate (2-22) and the right baffle plate (2-27) are connected with the rear baffle plate (2-26); The circular heating pipe (2-34) and the straight heating pipe fixing plate (2-23) are arranged on the bottom side of the straight heating pipe fixing plate (2-23). The lower pressure sensor base (2-35), the upper pressure sensor base (2-36), the sheet metal window (2-37), the air outlet sheet metal (2-38), the illuminating lamp (2-39), the lamp holder (2-40) and the oxygen sensor (2-41) are all installed on the front side of the back plate (2-26), and the illuminating lamp (2-39) is installed on the lamp holder (2-40); The support sheet metal (2-33) and the lamp tube support sheet metal (2-42) are connected, and the lamp tube support sheet metal (2-42) is installed on the front side of the support sheet metal (2-33). The inner sides of the back plate (2-26), the left plate (2-22) and the right plate (2-27) are all installed with the lamp tube support sheet metal (2-42), and the four lamp tube support sheet metals (2-42) form a rectangular ring structure; The upper lamp tube (2-43), the lower lamp tube (2-44), the lamp tube fixing sheet metal (2-45) and the side plate sheet metal seat (2-46) are installed on the inner side of each lamp tube support sheet metal (2-42). Each side plate sheet metal seat (2-46) is installed with an inclined lamp tube fixing sheet metal (2-45), and the bottom surface of each lamp tube fixing sheet metal (2-45) is clamped with an upper lamp tube (2-43) and a lower lamp tube (2-44); The rear heat insulation plate (2-47), the first side heat insulation plate (2-59), the handle (2-60), the second side heat insulation plate (2-61) and the front heat insulation plate (2-71) are installed on the two support columns (2-17) located on the front side, and the rear heat insulation plate (2-47) is connected with the cross beam (2-24) located on the front side. The outer side of each vertical beam (2-18) is installed with a first side heat insulation plate (2-59) and a second side heat insulation plate (2-61), and the second side heat insulation plate (2-61) is located on the front side of the first side heat insulation plate (2-59). The front heat insulation plate (2-71) is installed on the two support columns (2-17) located on the rear side, and the front heat insulation plate (2-71) is connected with the cross beam (2-24) located on the rear side. The front heat insulation plate (2-71), the rear heat insulation plate (2-47) and the two first side heat insulation plates (2-59) are all installed with the handle (2-60); The air blowing hole fixing seat (2-62) and the protective shell (2-48) are installed on each second side heat insulation plate (2-61). Single-hole air blowing seat (2-63), long air blowing hole seat (2-65), first sensor fixing sheet metal (2-66), acrylic door (2-68) and fixing block (2-70), long air blowing hole seat (2-65) is installed in the upper middle part of front heat insulation plate (2-71), acrylic door (2-68) is installed in the lower middle part of front heat insulation plate (2-71) and can be opened and closed, two fixing blocks (2-70) are symmetrically installed in the middle part of front heat insulation plate (2-71) and are arranged between long air blowing hole seat (2-65) and acrylic door (2-68), first sensor fixing sheet metal (2-66) is installed in the middle part of front heat insulation plate (2-71) and is arranged between two fixing blocks (2-70), and two single-hole air blowing seats (2-63) are respectively installed at two ends of front heat insulation plate (2-71); Camera (2-67) and tracheal joint fixing seat (2-69), camera (2-67) is installed on first sensor fixing sheet metal (2-66), and a plurality of tracheal joint fixing seats (2-69) are installed on each fixing block (2-70); First upper middle heat insulation plate (2-51), second upper middle heat insulation plate (2-52) and first fixing block (2-72), the top side edges of rear baffle (2-26), left baffle (2-22) and right baffle (2-27) are connected with the edges of first upper middle heat insulation plate (2-51), the two side edges of second upper middle heat insulation plate (2-52) are connected with the top side edges of left baffle (2-22) and right baffle (2-27) respectively, and the top side edges of left baffle (2-22) and right baffle (2-27) are provided with three first fixing blocks (2-72); Near-infrared temperature sensor (2-53), second sensor fixing sheet metal (2-55), window mirror fixing kit (2-56) and sensor support seat (2-64), second sensor fixing sheet metal (2-55) is installed on first upper middle heat insulation plate (2-51), near-infrared temperature sensor (2-53) is installed on second sensor fixing sheet metal (2-55), sensor support seat (2-64) is installed on first upper middle heat insulation plate (2-51), sensor support seat (2-64) is used for supporting near-infrared temperature sensor (2-53), and window mirror fixing kit (2-56) is installed on first upper middle heat insulation plate (2-51); Left upper heat insulation plate (2-50) and right upper heat insulation plate (2-58), left upper heat insulation plate (2-50) and right upper heat insulation plate (2-58) are symmetrically arranged left and right, and left upper heat insulation plate (2-50) and right upper heat insulation plate (2-58) are installed on thick cross beam (2-30) and cross beam (2-24) located at the front side; Upper heat insulation plate (2-49), upper heat insulation plate (2-49) is installed on thick cross beam (2-30) and cross beam (2-24) located at the rear side; Double-shaft air cylinder (2-57), one double-shaft air cylinder (2-57) is installed on left upper heat insulation plate (2-50) and right upper heat insulation plate (2-58) respectively, and the telescopic end of each double-shaft air cylinder (2-57) is connected with the top side edge of a baffle (2-21).

5. The laser sintering apparatus with an adapted hot chamber for online monitoring according to claim 4, characterized in that The powder supply system (3) comprises: T-shaped blocks (3-1), side clamping plates (3-2) and opposite radiation sensors (3-12), two T-shaped blocks (3-1) are installed on the top surface of the right upper heat insulation plate (2-58), one end of each side clamping plate (3-2) is connected with one T-shaped block (3-1), the other end of each side clamping plate (3-2) is connected with the other T-shaped block (3-1), and one opposite radiation sensor (3-12) is installed on each side clamping plate (3-2); outer fixing blocks (3-3), quick clamps (3-4), backing plates (3-5), powder supply bins (3-6) and adjustment sliding blocks (3-14), the bottom surface of the powder supply bin (3-6) is connected with the backing plate (3-5) through the outer fixing block (3-3), the two ends of the outer fixing block (3-3) are respectively provided with one adjustment sliding block (3-14), and the quick clamp (3-4) is used for connecting the two T-shaped blocks (3-1), the outer fixing block (3-3) and the two adjustment sliding blocks (3-14); rotary powder roller assemblies (3-15), the two ends of the rotary powder roller assembly (3-15) are respectively rotationally connected with the two T-shaped blocks (3-1); motor support blocks (3-11), motor positioning blocks (3-10) and stepping motors (3-9), the two ends of the motor support block (3-11) are respectively connected with the two side clamping plates (3-2), the motor positioning block (3-10) is installed on the motor support block (3-11), and the stepping motor (3-9) is installed on the motor positioning block (3-10); first driving pulleys (3-17) and first driven pulleys (3-16), the first driving pulley (3-17) is installed on the output shaft of the stepping motor (3-9), and the first driven pulley (3-16) is installed on the rotary powder roller assembly (3-15); clamping blocks (3-13), the clamping block (3-13) is installed on the top surface of the right upper heat insulation plate (2-58) and located between the two side clamping plates (3-2); bin covers (3-7) and second handles (3-8), the bin cover (3-7) is arranged on the top of the powder supply bin (3-6), and the second handle (3-8) is installed on the bin cover (3-7).

6. The laser sintering apparatus with an adapted hot chamber for online monitoring according to claim 5, characterized in that The laser system (4) comprises: vertical profiles (4-1), horizontal profiles (4-3) and lasers (4-2), two vertical profiles (4-1) are respectively installed on the two vertical beams (2-18), one end of the horizontal profile (4-3) is connected with the top end of one vertical profile (4-1), and the laser (4-2) is installed on the horizontal profile (4-3); incident light frames (4-4), reflection mirror frame groups (4-7) and outgoing mirror frames (4-8), the incident light frame (4-4) is installed on the horizontal profile (4-3), the reflection mirror frame group (4-7) is installed on the incident light frame (4-4), and two outgoing mirror frames (4-8) are installed on the reflection mirror frame group (4-7); The light path support seat (4-9), the light path support plate (4-14) and the wire harness sheet metal (4-11), the light path support plate (4-14) is installed on the first middle upper heat insulation plate (2-51) through two light path support seats (4-9), and the wire harness sheet metal (4-11) is installed on the light path support plate (4-14); The positioning strip (4-10), the galvanometer fixed block (4-16), the galvanometer (4-6), the field lens (4-17) and the scanning area (4-18), the positioning strip (4-10) is installed on the light path support plate (4-14), the galvanometer fixed block (4-16) is installed at one end of the light path support plate (4-14), the galvanometer (4-6) is installed on the galvanometer fixed block (4-16), the field lens (4-17) is installed on the galvanometer (4-6), and the field lens (4-17) is arranged above the window mirror fixed sleeve (2-56); the laser light path passing through the field lens (4-17) forms the scanning area (4-18) through the window mirror fixed sleeve (2-56); The second mirror group (4-12), the second exit mirror seat (4-13) and the beam expander mirror assembly (4-15), the second exit mirror seat (4-13) is installed on the light path support plate (4-14), the second mirror group (4-12) is installed on the second exit mirror seat (4-13), and the beam expander mirror assembly (4-15) is installed on the light path support plate (4-14); the positioning strip (4-10) is used for positioning the second exit mirror seat (4-13) and the beam expander mirror assembly (4-15); The light path protection shell (4-5) is installed above the light path support plate (4-14), and the positioning strip (4-10), the wire harness sheet metal (4-11), the second mirror group (4-12), the second exit mirror seat (4-13), the light path support plate (4-14) and the beam expander mirror assembly (4-15) are arranged in the light path protection shell (4-5).

7. The laser sintering apparatus with an adapted hot chamber for online monitoring according to claim 6, characterized in that The powder laying system (5) comprises: A powder laying device is slidably installed on the first bottom plate (2-8); A second bearing seat (5-34), a long shaft (5-33) and a second driving pulley (5-24), the second bearing seat (5-34) is installed on the first bottom plate (2-8), the long shaft (5-33) is rotatably installed on the second bearing seat (5-34), and the second driving pulley (5-24) is installed on the long shaft (5-33); Two support side plates (5-4) are installed on the second bearing seat (5-34), two ends of a top support plate (5-5) are connected with top ends of the two support side plates (5-4) respectively, a stepping reduction motor (5-6) is installed on the top support plate (5-5), an output shaft of the stepping reduction motor (5-6) and the long shaft (5-33) are drivingly connected through a coupling (5-7), and the stepping reduction motor (5-6) is used for driving the second driving pulley (5-24) to rotate; The powder laying system (5) comprises: The first bearing seat (5-18), the second driven pulley (5-20), the short shaft (5-21) and the synchronous belt (5-19), the first bearing seat (5-18) is installed on the first bottom plate (2-8), the short shaft (5-21) is rotatably installed on the first bearing seat (5-18), the second driven pulley (5-20) is installed on the short shaft (5-21), the second driving pulley (5-24) and the second driven pulley (5-20) are toothed meshing transmission connection through the synchronous belt (5-19); The left positive limit limit switch (5-8), the left origin limit limit switch (5-9), the left negative limit limit switch (5-10), the right negative limit limit switch (5-14), the right origin limit limit switch (5-15) and the right positive limit limit switch (5-16) are installed on the cross beam (2-24) from left to right.

8. The laser sintering apparatus with an adapted hot chamber for online monitoring according to claim 7, characterized in that The powder laying system (5) further comprises a linear guide rail (5-22), a guide rail (5-25), a roller sliding block (5-26) and a linear guide rail sliding block (5-1), the linear guide rail (5-22) and the guide rail (5-25) are both installed on the first bottom plate (2-8), the linear guide rail (5-22) and the guide rail (5-25) are parallel, the linear guide rail sliding block (5-1) is slidably installed on the linear guide rail (5-22), and the roller sliding block (5-26) is slidably installed on the guide rail (5-25); The powder laying device comprises a bottom plate (5-23), a side plate (5-2), a top plate (5-3), a sealing felt block (5-32) and a tensioning plate (5-31), the linear guide rail sliding block (5-1) and the roller sliding block (5-26) are both connected with the bottom surface of the bottom plate (5-23), the left and right sides of the bottom plate (5-23) are both provided with the side plate (5-2), the top edges of the two side plates are connected with the top plate (5-3), the sealing felt block (5-32) is installed on the top plate (5-3), and two tensioning plates (5-31) are installed on each side plate (5-2); The connecting support block (5-27), the scraper top plate (5-11), the scraper (5-28), the scraper support side plate (5-13), the scraper connecting plate (5-12) and the bearing (5-29), the bottom edge of the connecting support block (5-27) is connected with the rear end of the bottom plate (5-23), the top edge of the connecting support block (5-27) is connected with the rear end of the top plate (5-3), the scraper top plate (5-11) and the scraper (5-28) are both installed on the connecting support block (5-27), the left and right side edges of the scraper top plate (5-11) are respectively connected with the two scraper connecting plates (5-12), the left and right side edges of the scraper support side plate (5-13) are respectively connected with the rear ends of the two scraper connecting plates (5-12), and two bearings (5-29) are installed on the scraper support side plate (5-13); The steel band clamp plate (5-30) is installed on the connecting support block (5-27), one steel band sheet metal (5-35) is installed on each side plate (5-2), and the two steel band sheet metals (5-35) and the steel band clamp plate (5-30) are connected through the steel band (5-17); the equipment body (2) further comprises: a felt pressing strip (2-19) and a U-shaped felt (2-20), the outer periphery of the steel band (5-17) is covered with the U-shaped felt (2-20), and the felt pressing strip (2-19) is used for pressing the U-shaped felt (2-20).

9. The laser sintering apparatus with an adaptive high-temperature working hot chamber supporting online monitoring according to claim 7, characterized in that, A single-hole air blowing seat (2-63), a tracheal joint fixing seat (2-69) and an air blowing hole fixing seat (2-62) are provided with a gas joint, and the gas circulation system (6) comprises: A lower negative pressure pipe (6-1), a support pipe sheet metal (6-2) and an upper negative pressure pipe (6-3), one end of the lower negative pressure pipe (6-1) is communicated with the negative pressure air suction pipe, the other end of the lower negative pressure pipe (6-1) is installed at the opening of the intermediate cross beam (2-24), the lower negative pressure pipe (6-1) is installed on the upper heat insulation plate (2-49) through the support pipe sheet metal (6-2), the upper negative pressure pipe (6-3) is installed on the lower negative pressure pipe (6-1) through the support pipe sheet metal (6-2), one end of the upper negative pressure pipe (6-3) is communicated with the negative pressure air suction pipe, and the other end of the upper negative pressure pipe (6-3) is installed on the air outlet sheet metal (2-38) on the rear baffle (2-26); Two fixed covers (6-4) are installed on the outer side of the lower negative pressure pipe (6-1), the adjustable screw cover (6-5) is installed on the fixed cover (6-4) and located in the lower negative pressure pipe (6-1), the self-made wrench (6-6) is connected with the adjustable screw cover (6-5), and the self-made wrench (6-6) is used for adjusting the position of the adjustable screw cover (6-5); The waste powder collection system (7) comprises: a waste powder box (7-1), a quick clamp (7-2) and a waste powder fixing sheet metal (7-3), one waste powder fixing sheet metal (7-3) is installed on the left bottom plate (2-9) and the right bottom plate (2-15) respectively, and one waste powder box (7-1) is detachably connected below each waste powder fixing sheet metal (7-3) through two quick clamps (7-2).

10. The laser sintering apparatus with an adaptive high-temperature working hot chamber supporting online monitoring according to claim 4, characterized in that, The equipment body (2) further comprises: a cover plate (2-54), and the cover plate (2-54) or the imager (8) is installed on the second middle upper heat insulation plate (2-52).

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