A laser sintering 3D printing device for continuous processing

Abstract

The utility model discloses a laser sintering 3D printing device for continuous processing, which relates to the technical field of selective laser sintering processing, and solves the problems that continuous powder supply and non-stop automatic processing cannot be formed, the powder cleaning inside the equipment is complicated, the workpiece is inconvenient to take out after printing, and the loading needs to be done manually, which may cause dust pollution. The utility model realizes non-stop automatic processing and continuous printing, and the printing and powder collection processes are both in a closed environment without causing pollution. The powder inside the equipment is easy to clean and collect, and the collected powder can be reused, which reduces loss and waste. The upper parts of the left upper powder supply module and the right upper powder supply module are both provided with powder supply ports and gas extraction ports, and the gas extraction ports are evacuated to perform negative pressure vacuum, and the material powder is drawn into the left upper powder supply module and the right upper powder supply module, thereby realizing automatic loading without manual loading, and realizing automatic discharging, which is convenient for taking out the workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of selective laser sintering processing, and in particular to a laser sintering 3D printing device for continuous processing. Background Art

[0002] Selective laser sintering (SLS) is an advanced technology based on the principle of additive manufacturing. It uses a controllable laser beam to melt powdered materials and sinter them layer by layer to form a complex three-dimensional model. Process equipment, software technology and molding materials are the three key technologies for the industrial development of selective laser sintering. Selective laser sintering technology (SLS) can be used for laser sintering of a variety of polymer materials, such as wood-plastic composites, nylon materials, PEEK materials, stainless steel powder, titanium alloy materials, etc.

[0003] Selective laser sintering technology is to sweep the powder material required for processing from the powder bin and spread it on the surface of the molding bin by rotating the powder roller. The quartz heating tube controlled by the PID controller is used to heat to the required preheating temperature and maintain the stability of the preheating temperature. The CO2 laser uses a galvanometer to perform laser scanning and sintering on the processing area to make the powder reach its melting point and form the geometric shape of the slice layer. When the first layer of sintering is completed, the support plate of the molding bin drops one unit thickness, and the powder roller rotates to sweep the powder to compact the powder surface at the molding bin position, and sinter a new layer of cross section until the entire model is completed.

[0004] The current mainstream selective laser sintering equipment adopts a double powder bin structure layout. The advantages of this layout are controllable powder spreading, uniform powder spreading, easy compaction, simple manufacturing process, high precision, no need for support structure, etc. The main disadvantages are: it cannot form continuous powder supply and non-stop automatic processing, the powder cleaning inside the equipment is complicated, the workpiece is not convenient to remove after printing, the loading needs to be done manually, and it may cause dust pollution and other problems. Utility Model Content

[0005] In view of the above-mentioned problems that continuous powder supply and non-stop automated processing cannot be achieved, powder cleaning inside the equipment is complicated, workpieces are inconvenient to remove after printing, and loading must be done manually, which may cause dust pollution. The purpose of the utility model is to provide a laser sintering 3D printing equipment for continuous processing, which adopts an upper-mounted quantitative powder supply device to continuously supply powder to the processing equipment, solves the tedious operation of manual loading, and adopts a powder discharge and cleaning module and an automatic pick-up device, so that the entire equipment can achieve continuous processing operations.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A laser sintering 3D printing device for continuous processing, comprising:

[0008] The frame and the powder spreading table plane 5, the powder spreading table plane 5 is installed on the top of the frame;

[0009] The upper main mounting frame 3 is mounted on the powder spreading table plane 5;

[0010] A left upper powder supply module 1 and a right upper powder supply module 9, wherein the left upper powder supply module 1 and the right upper powder supply module 9 are both installed on the top of the upper main installation frame 3;

[0011] The first sliding track 23, the rack 24 and the second sliding track 25 are all installed on the powder spreading table plane 5, and the first sliding track 23, the rack 24 and the second sliding track 25 are parallel to each other;

[0012] The left limiter 22 and the right limiter 38 are both installed on the powder spreading table plane 5, and the left limiter 22 and the right limiter 38 are respectively arranged at the left and right ends of the second sliding track 25;

[0013] The track slider mounting seat plate 37 is slidably mounted on the first sliding track 23 and the second sliding track 25;

[0014] The third stepper motor 35 and the fourth stepper motor 36 are both mounted on the track slider mounting base plate 37;

[0015] Gear 34, gear 34 is mounted on the output shaft of the third stepping motor 35, and gear 34 is meshed with rack 24;

[0016] The powder spreading trolley 10 is connected to the track slider mounting seat plate 37;

[0017] The powder spreading trolley 10 comprises: a powder spreading roller mounting frame 1001 and a powder spreading roller 1002, the powder spreading roller 1002 is rotatably mounted in the powder spreading roller mounting frame 1001, the powder spreading roller mounting frame 1001 is connected to the track slider mounting seat plate 37, and the fourth stepping motor 36 is used to drive the powder spreading roller 1002 to rotate;

[0018] A dust sealing belt 4 is installed on the rear side of the upper main mounting frame 3 and is in contact with the powder spreading trolley 10;

[0019] A lower molding box 14, which is installed in the middle of the frame;

[0020] The left powder cleaning module 7 and the right powder cleaning module 15 are both installed in the middle of the frame, and the left powder cleaning module 7 and the right powder cleaning module 15 are respectively arranged on the left and right sides of the lower molding box 14;

[0021] The upper molding powder cleaning box 12, the first rolling wheel frame 18 and the second rolling wheel frame 20, the front side of the upper molding powder cleaning box 12 is connected to the second rolling wheel frame 20, the rear side of the upper molding powder cleaning box 12 is connected to the first rolling wheel frame 18, the middle part of the frame is provided with a first roller groove 19 and a second roller groove 21, the first rolling wheel frame 18 is installed in the first roller groove 19, and the second rolling wheel frame 20 is installed in the second roller groove 21;

[0022] The lower molding box 14 includes: a lower molding box side plate 1401 and a molding powder spreading plate 1402. A plurality of lower molding box side plates 1401 are combined to form a box body, which is mounted on a frame, and the molding powder spreading plate 1402 is located in the box body.

[0023] A third pneumatic push rod 13, which is mounted on the frame, and a movable rod of the third pneumatic push rod 13 is connected to the upper forming powder cleaning box 12;

[0024] The servo electric push cylinder 17 includes: an electric push rod 1701 and an electric push rod sleeve 1702, the electric push rod 1701 is installed in the electric push rod sleeve 1702, the electric push rod sleeve 1702 is installed on the frame, and the electric push rod 1701 is connected to the bottom of the forming powder spreading plate 1402;

[0025] The first laser 29 , the beam expander 30 and the second laser 31 , the second laser 31 , the beam expander 30 and the first laser 29 are sequentially mounted on the top of the upper main mounting frame 3 from front to back.

[0026] The above-mentioned laser sintering 3D printing equipment for continuous processing, among other things, also includes: a left waste powder box 6 and a right waste powder box 11, which are respectively installed at the left and right ends of the dust sealing belt 4, and a first waste powder box outlet 601 is provided on the left waste powder box 6, and a second waste powder box outlet 1101 is provided on the right waste powder box 11.

[0027] The above-mentioned laser sintering 3D printing device for continuous processing, wherein, also includes: the left upper powder supply module 1 and the right upper powder supply module 9 have the same structure and are symmetrically arranged, the left upper powder supply module 1 includes: an upper powder supply box upper box body 103, a sealing plate 104, an upper powder supply box lower box body 105, a side sealing plate 106, a first powder blocking block 107, a second powder blocking block 108 and a powder supply roller 109, the upper powder supply box lower box body 105 is installed on the top of the upper main mounting frame 3, the upper powder supply box upper box body 103 is installed on the upper part of the upper powder supply box lower box body 105 and is connected to the upper powder supply box lower box body 105 A sealing plate 104 is arranged in the upper box body 103 of the upper powder supply box and is used to separate the upper box body 103 of the upper powder supply box and the lower box body 105 of the upper powder supply box. The upper box body 103 of the upper powder supply box is provided with a powder supply port 101 and a gas extraction port 102. A side sealing plate 106 is installed on the inner wall of the bottom opening of the lower box body 105 of the upper powder supply box. A first powder blocking block 107, a second powder blocking block 108 and a powder supply roller 109 are installed at the bottom opening of the lower box body 105 of the upper powder supply box. The second powder blocking block 108 and the first powder blocking block 107 and the second powder blocking block 108 are respectively arranged on the left and right sides of the powder supply roller 109.

[0028] The above-mentioned laser sintering 3D printing device for continuous processing, wherein, also includes: a first pneumatic push rod 2 and a fifth pneumatic push rod 28, two first pneumatic push rods 2 and two fifth pneumatic push rods 28 are installed on the top of the upper main mounting frame 3, the two first pneumatic push rods 2 are respectively installed on the front side of the left upper powder supply module 1 and the right upper powder supply module 9, the two fifth pneumatic push rods 28 are respectively installed on the left upper powder supply module 1 and the right upper powder supply module 9 The rear side, the first pneumatic push rod 2 and the fifth pneumatic push rod 28 located on the left side are used to drive the displacement of the sealing plate 104 of the left upper powder supply module 1, and the first pneumatic push rod 2 and the fifth pneumatic push rod 28 located on the right side are used to drive the displacement of the sealing plate 104 of the right upper powder supply module 9.

[0029] The above-mentioned laser sintering 3D printing device for continuous processing, among other things, also includes: a first stepper motor 26 and a first stepper motor mounting bracket 27, the first stepper motor mounting bracket 27 is mounted on the upper main mounting frame 3, the first stepper motor 26 is mounted on the first stepper motor mounting bracket 27, and the first stepper motor 26 is used to drive the powder supply roller 109 of the left upper powder supply module 1 to rotate.

[0030] The above-mentioned laser sintering 3D printing device for continuous processing, wherein, the second stepper motor 32 and the second stepper motor mounting bracket 33, the second stepper motor mounting bracket 33 is installed on the upper main mounting frame 3, the second stepper motor 32 is installed on the second stepper motor mounting bracket 33, and the second stepper motor 32 is used to drive the powder supply roller 109 of the upper powder supply module 9 on the right side to rotate.

[0031] The above-mentioned laser sintering 3D printing device for continuous processing, wherein the left powder cleaning module 7 includes: an isolation net 701, a material baffle plate 702, a powder cleaning box body 704, a left sealing plate 705 of the powder cleaning box and a right sealing plate 706 of the powder cleaning box, the powder cleaning box body 704 is installed in the middle of the frame, the right sealing plate 706 of the powder cleaning box and the left sealing plate 705 of the powder cleaning box are respectively installed on the front and rear sides of the powder cleaning box body 704, a waste powder outlet 703 is opened at the bottom of the powder cleaning box body 704, and an isolation net 701 and a material baffle plate 702 are installed inside the powder cleaning box body 704, and the material baffle plate 702 is used to cover the waste powder outlet 703;

[0032] The second pneumatic push rod 8 includes: a pneumatic push rod cylinder rod 801 and a pneumatic push rod cylinder body 802 . The pneumatic push rod cylinder rod 801 is installed in the pneumatic push rod cylinder body 802 . The pneumatic push rod cylinder body 802 is installed in the middle of the frame. The pneumatic push rod cylinder rod 801 is connected to the baffle plate 702 .

[0033] The above-mentioned laser sintering 3D printing device for continuous processing, wherein the right powder cleaning module 15 comprises: a right powder cleaning box body, a right powder cleaning box baffle plate and a powder isolation net 1501, the right powder cleaning box body is installed in the middle of the frame, a discharge port 1502 is opened at the bottom of the right powder cleaning box body, a powder isolation net 1501 and a right powder cleaning box baffle plate are installed inside the right powder cleaning box body, and the right powder cleaning box baffle plate is used to cover the discharge port 1502;

[0034] The fourth pneumatic push rod 16 includes: a push rod 1601 and a push rod sleeve 1602, the push rod 1601 is installed in the push rod sleeve 1602, the push rod sleeve 1602 is installed in the middle of the frame, and the push rod 1601 is connected to the right powder cleaning box baffle.

[0035] In the above-mentioned laser sintering 3D printing device for continuous processing, the second pneumatic push rod 8 and the fourth pneumatic push rod 16 are symmetrically arranged.

[0036] The above-mentioned laser sintering 3D printing device for continuous processing, wherein the upper molding powder cleaning box 12 includes: a left box body 1201 of the upper molding powder cleaning box and a right box body 1202 of the upper molding powder cleaning box, and the left box body 1201 of the upper molding powder cleaning box and the right box body 1202 of the upper molding powder cleaning box are connected to each other.

[0037] Due to the adoption of the above technology, the utility model has the following positive effects compared with the prior art:

[0038] (1) The utility model realizes continuous printing without stopping the machine. The printing and powder collection process are both in a closed environment, which will not cause pollution. The powder inside the equipment is easy to clean and collect, and the collected powder can be reused, which reduces loss and waste.

[0039] (2) In the present invention, a powder feeding port and a gas extraction port are provided at the upper parts of the left upper powder supply module and the right upper powder supply module, and a sealing plate is inserted in the left upper powder supply module and the right upper powder supply module. By dividing the upper parts of the left upper powder supply module and the right upper powder supply module into a closed cavity, the gas extraction port is evacuated to perform negative pressure vacuuming, and the material powder is drawn into the upper parts of the left upper powder supply module and the right upper powder supply module. The opening and closing of the sealing plate are controlled by the first pneumatic push rod and the fifth pneumatic push rod, so that the material powder falls into the lower parts of the left upper powder supply module and the right upper powder supply module, thereby realizing automatic feeding without manual feeding;

[0040] (3) In the utility model, the left powder cleaning module and the right powder cleaning module have the same structure and are symmetrically arranged. A material baffle plate is provided at the bottom of the left powder cleaning module and the right powder cleaning module. The opening and closing of the material baffle plate in the left powder cleaning module and the right powder cleaning module are respectively controlled by the second pneumatic push rod and the fourth pneumatic push rod to realize automatic discharging, which is convenient for removing the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of a laser sintering 3D printing device for continuous processing of the utility model.

[0042] Figure 2 It is a cross-sectional view of a laser sintering 3D printing device for continuous processing of the utility model.

[0043] Figure 3 It is a left view of a laser sintering 3D printing device for continuous processing according to the utility model.

[0044] Figure 4 It is a top view of a laser sintering 3D printing device for continuous processing of the utility model.

[0045] Figure 5 It is a front side view of a laser sintering 3D printing device for continuous processing of the utility model.

[0046] In the attached figure: 1. upper powder supply module on the left; 2. first pneumatic push rod; 3. upper main mounting frame; 4. dust sealing belt; 5. powder spreading table plane; 6. waste powder box on the left; 7. powder cleaning module on the left; 8. second pneumatic push rod; 9. upper powder supply module on the right; 10. powder spreading trolley; 11. waste powder box on the right; 12. upper molding powder cleaning box; 13. third pneumatic push rod; 14. lower molding box; 15. powder cleaning module on the right; 16. fourth pneumatic push rod; 17. servo electric push cylinder; 18. first rolling wheel frame; 19. 1. roller groove; 20. second roller frame; 21. second roller groove; 22. left limit; 23. first sliding track; 24. rack; 25. second sliding track; 26. first stepper motor; 27. first stepper motor mounting frame; 28. fifth pneumatic push rod; 29. ​​first laser; 30. beam expander; 31. second laser; 32. second stepper motor; 33. second stepper motor mounting frame; 34. gear; 35. third stepper motor; 36. fourth stepper motor; 37. track slider mounting frame Mounting plate; 38, right limiter; 101, powder feeding port; 102, gas extraction port; 103, upper box of upper powder feeding box; 104, sealing plate; 105, lower box of upper powder feeding box; 106, side sealing plate; 107, first powder blocking block; 108, second powder blocking block; 109, powder feeding roller; 601, first waste powder box outlet; 1001, powder spreading roller mounting frame; 1002, powder spreading roller; 1101, second waste powder box outlet; 1201, left box of upper forming and cleaning powder box; 1202, upper forming and cleaning powder box The right side of the powder box; 1501, the powder isolation net; 1502, the material outlet; 1601, the push rod; 1602, the push rod sleeve; 701, the isolation net; 702, the material baffle plate; 703, the waste powder outlet; 704, the powder cleaning box body; 705, the left sealing plate of the powder cleaning box; 706, the right sealing plate of the powder cleaning box; 801, the pneumatic push rod cylinder rod; 802, the pneumatic push rod cylinder body; 1401, the lower molding box side plate; 1402, the molding powder spreading plate; 1701, the electric push rod; 1702, the electric push rod sleeve. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0048] Please refer to Figures 1 to 5 As shown, a laser sintering 3D printing device for continuous processing is shown, which includes:

[0049] The frame and the powder spreading table plane 5, the powder spreading table plane 5 is installed on the top of the frame;

[0050] The upper main mounting frame 3 is mounted on the powder spreading table plane 5;

[0051] The left upper powder supply module 1 and the right upper powder supply module 9 are both installed on the top of the upper main installation frame 3;

[0052] The first sliding track 23, the rack 24 and the second sliding track 25 are all installed on the powder spreading table plane 5, and the first sliding track 23, the rack 24 and the second sliding track 25 are parallel to each other;

[0053] The left limiter 22 and the right limiter 38 are both installed on the powder spreading table plane 5, and the left limiter 22 and the right limiter 38 are respectively arranged at the left and right ends of the second sliding track 25;

[0054] The track slider mounting seat plate 37 is slidably mounted on the first sliding track 23 and the second sliding track 25;

[0055] The third stepper motor 35 and the fourth stepper motor 36 are both mounted on the track slider mounting base plate 37;

[0056] Gear 34, gear 34 is mounted on the output shaft of the third stepping motor 35, and gear 34 is meshed with rack 24;

[0057] The powder spreading trolley 10 is connected to the track slider mounting seat plate 37;

[0058] The powder spreading trolley 10 comprises: a powder spreading roller mounting frame 1001 and a powder spreading roller 1002, the powder spreading roller 1002 is rotatably mounted in the powder spreading roller mounting frame 1001, the powder spreading roller mounting frame 1001 is connected to the track slider mounting seat plate 37, and the fourth stepping motor 36 is used to drive the powder spreading roller 1002 to rotate;

[0059] A dust sealing belt 4 is installed on the rear side of the upper main mounting frame 3 and is in contact with the powder spreading trolley 10;

[0060] A lower molding box 14, which is installed in the middle of the frame;

[0061] The left powder cleaning module 7 and the right powder cleaning module 15 are both installed in the middle of the frame, and the left powder cleaning module 7 and the right powder cleaning module 15 are respectively arranged on the left and right sides of the lower molding box 14;

[0062] The upper molding powder cleaning box 12, the first rolling wheel frame 18 and the second rolling wheel frame 20, the front side of the upper molding powder cleaning box 12 is connected to the second rolling wheel frame 20, the rear side of the upper molding powder cleaning box 12 is connected to the first rolling wheel frame 18, the middle part of the frame is provided with a first roller groove 19 and a second roller groove 21, the first rolling wheel frame 18 is installed in the first roller groove 19, and the second rolling wheel frame 20 is installed in the second roller groove 21;

[0063] The lower molding box 14 includes: a lower molding box side plate 1401 and a molding powder spreading plate 1402. A plurality of lower molding box side plates 1401 are combined to form a box body, the box body is mounted on the frame, and the molding powder spreading plate 1402 is located in the box body;

[0064] A third pneumatic push rod 13, which is installed on the frame, and a movable rod of the third pneumatic push rod 13 is connected to the upper forming powder cleaning box 12;

[0065] The servo electric push cylinder 17 includes: an electric push rod 1701 and an electric push rod sleeve 1702, the electric push rod 1701 is installed in the electric push rod sleeve 1702, the electric push rod sleeve 1702 is installed on the frame, and the electric push rod 1701 is connected to the bottom of the forming powder spreading plate 1402;

[0066] The first laser 29 , the beam expander 30 and the second laser 31 , the second laser 31 , the beam expander 30 and the first laser 29 are sequentially mounted on the top of the upper main mounting frame 3 from front to back.

[0067] Furthermore, in a preferred embodiment, it also includes: a left waste powder box 6 and a right waste powder box 11, which are respectively installed at the left and right ends of the dust sealing belt 4, and a first waste powder box outlet 601 is provided on the left waste powder box 6, and a second waste powder box outlet 1101 is provided on the right waste powder box 11.

[0068] Further, in a preferred embodiment, it also includes: the left upper powder supply module 1 and the right upper powder supply module 9 have the same structure and are symmetrically arranged, the left upper powder supply module 1 includes: an upper powder supply box upper box body 103, a sealing plate 104, an upper powder supply box lower box body 105, a side sealing plate 106, a first powder blocking block 107, a second powder blocking block 108 and a powder supply roller 109, the upper powder supply box lower box body 105 is installed on the top of the upper main mounting frame 3, the upper powder supply box upper box body 103 is installed on the upper part of the upper powder supply box lower box body 105 and is connected to the upper powder supply box lower box body 105, the sealing plate 104 is arranged in the upper box body 103 of the upper powder supply box and is used to separate the upper box body 103 of the upper powder supply box and the lower box body 105 of the upper powder supply box. The upper box body 103 of the upper powder supply box is provided with a powder supply port 101 and a gas extraction port 102. The inner wall of the bottom opening of the lower box body 105 of the upper powder supply box is installed with a side sealing plate 106. The first powder blocking block 107, the second powder blocking block 108 and the powder supply roller 109 are installed at the bottom opening of the lower box body 105 of the upper powder supply box. The second powder blocking block 108 and the first powder blocking block 107 and the second powder blocking block 108 are respectively arranged on the left and right sides of the powder supply roller 109.

[0069] Furthermore, in a preferred embodiment, it also includes: a first pneumatic push rod 2 and a fifth pneumatic push rod 28. Two first pneumatic push rods 2 and two fifth pneumatic push rods 28 are installed on the top of the upper main mounting frame 3. The two first pneumatic push rods 2 are respectively installed on the front sides of the left upper powder supply module 1 and the right upper powder supply module 9, and the two fifth pneumatic push rods 28 are respectively installed on the rear sides of the left upper powder supply module 1 and the right upper powder supply module 9. The first pneumatic push rod 2 and the fifth pneumatic push rod 28 located on the left are used to drive the displacement of the sealing plate 104 of the left upper powder supply module 1, and the first pneumatic push rod 2 and the fifth pneumatic push rod 28 located on the right are used to drive the displacement of the sealing plate 104 of the right upper powder supply module 9.

[0070] Furthermore, in a preferred embodiment, it also includes: a first stepper motor 26 and a first stepper motor mounting bracket 27, the first stepper motor mounting bracket 27 is installed on the upper main mounting frame 3, the first stepper motor 26 is installed on the first stepper motor mounting bracket 27, and the first stepper motor 26 is used to drive the powder supply roller 109 of the left upper powder supply module 1 to rotate.

[0071] Further, in a preferred embodiment, the second stepper motor 32 and the second stepper motor mounting bracket 33, the second stepper motor mounting bracket 33 is installed on the upper main mounting frame 3, the second stepper motor 32 is installed on the second stepper motor mounting bracket 33, and the second stepper motor 32 is used to drive the powder supply roller 109 of the upper powder supply module 9 on the right side to rotate.

[0072] Further, in a preferred embodiment, the left powder cleaning module 7 includes: an isolation net 701, a material baffle plate 702, a powder cleaning box body 704, a left sealing plate 705 of the powder cleaning box, and a right sealing plate 706 of the powder cleaning box. The powder cleaning box body 704 is installed in the middle of the frame, and the right sealing plate 706 of the powder cleaning box and the left sealing plate 705 of the powder cleaning box are respectively installed on the front and rear sides of the powder cleaning box body 704. A waste powder outlet 703 is provided at the bottom of the powder cleaning box body 704. An isolation net 701 and a material baffle plate 702 are installed inside the powder cleaning box body 704. The material baffle plate 702 is used to cover the waste powder outlet 703.

[0073] The second pneumatic push rod 8 includes: a pneumatic push rod cylinder rod 801 and a pneumatic push rod cylinder body 802 . The pneumatic push rod cylinder rod 801 is installed in the pneumatic push rod cylinder body 802 . The pneumatic push rod cylinder body 802 is installed in the middle of the frame. The pneumatic push rod cylinder rod 801 is connected to the baffle plate 702 .

[0074] Further, in a preferred embodiment, the right powder cleaning module 15 includes: a right powder cleaning box body, a right powder cleaning box baffle plate and a powder isolation net 1501, the right powder cleaning box body is installed in the middle of the frame, a discharge port 1502 is opened at the bottom of the right powder cleaning box body, a powder isolation net 1501 and a right powder cleaning box baffle plate are installed inside the right powder cleaning box body, and the right powder cleaning box baffle plate is used to cover the discharge port 1502;

[0075] The fourth pneumatic push rod 16 includes: a push rod 1601 and a push rod sleeve 1602, the push rod 1601 is installed in the push rod sleeve 1602, the push rod sleeve 1602 is installed in the middle of the frame, and the push rod 1601 is connected to the right powder cleaning box baffle.

[0076] Furthermore, in a preferred embodiment, the second pneumatic push rod 8 and the fourth pneumatic push rod 16 are symmetrically arranged.

[0077] Further, in a preferred embodiment, the upper molding powder cleaning box 12 includes: an upper molding powder cleaning box left box body 1201 and an upper molding powder cleaning box right box body 1202, and the upper molding powder cleaning box left box body 1201 and the upper molding powder cleaning box right box body 1202 are connected to each other.

[0078] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention.

[0079] The utility model also has the following implementation methods based on the above:

[0080] In a further embodiment of the utility model, the device is composed of a left upper powder supply module 1, a first pneumatic push rod 2, an upper main mounting frame 3, a dust sealing belt 4, a powder spreading table plane 5, a left waste powder box 6, a left powder cleaning module 7, a second pneumatic push rod 8, a right upper powder supply module 9, a powder spreading trolley 10, a right waste powder box 11, an upper molding powder cleaning box 12, a third pneumatic push rod 13, a lower molding box 14, a right powder cleaning module 15, a fourth pneumatic push rod 16, a servo electric push cylinder 17, a first rolling wheel frame 18, a first roller groove 19, a second rolling wheel frame 20, a second roller groove 21, a left limit 22, a first sliding rail 23, a rack 24, a second sliding rail 25, a first stepper motor 26, a first stepper motor mounting frame 27, and a fifth pneumatic push rod 28. , a first laser 29, a beam expander 30, a second laser 31, a second stepper motor 32, a second stepper motor mounting bracket 33, a gear 34, a third stepper motor 35, a fourth stepper motor 36, a track slider mounting base plate 37, and a right limit 38, wherein the left upper powder supply module 1, the first pneumatic push rod 2, and the right upper powder supply module 9 are installed on the top plate of the body, the powder spreading trolley 10 is installed above the powder spreading table plane 5 for spreading powder, the left waste powder box 6 and the right waste powder box 11 are installed on the left and right sides of the powder spreading table plane 5 for collecting waste powder, the upper molding powder cleaning box 12 is installed on the first roller groove 19 and the second roller groove 21 through the first rolling wheel frame 18 and the second rolling wheel frame 20, and the first roller groove 19 and the second roller groove 21 are arranged Installed on the frame, the third pneumatic push rod 13 is installed on the frame and connected to the upper molding powder cleaning box 12, the left powder cleaning module 7 and the lower molding box 14, the right powder cleaning module 15 are installed on the frame below the upper molding powder cleaning box 12, the second pneumatic push rod 8 and the fourth pneumatic push rod 16 are installed on the frame below the left powder cleaning module 7 and the right powder cleaning module 15, used for opening and closing control of the powder cleaning control panel, the servo electric push cylinder 17 is installed below the lower molding box 14, the optical path system consists of a first laser 29, a beam expander 30, and a second laser 31, which are installed on the top plate, the rack 24, the second sliding rail 25, and the first sliding rail 23 are installed on the powder spreading table plane 5 in sequence, the track slider mounting base plate 37 is installed on the first sliding rail 23, and the fourth stepper The motor 36 is mounted on the track slider mounting base plate 37, the gear 34 is mounted on the third stepper motor 35 through the shaft, the gear 34 and the rack 24 are meshed with each other to realize the transmission of the powder spreading trolley 10 and the powder spreading movement, the first stepper motor 26 is mounted on the first stepper motor mounting frame 27, the first stepper motor mounting frame 27 is mounted on the upper main mounting frame 3, the second stepper motor 32 is mounted on the second stepper motor mounting frame 33, the second stepper motor mounting frame 33 is mounted on the upper main mounting frame 3, the first stepper motor 26 and the second stepper motor mounting frame 33 are mainly used to provide power for powder supply, the dust sealing belt 4 is installed on the powder spreading trolley 10 and the right upper powder supply module 9, and its main function is to prevent powder from entering the transmission of the powder spreading trolley 10,The fifth pneumatic push rod 28 is installed on the top plate, and the right limiter 38 and the left limiter 22 are installed on both sides of the powder spreading table plane 5 for limiting and position detection of the powder spreading trolley 10.

[0081] In a further embodiment of the utility model, the left upper powder supply module 1 is mainly composed of a powder supply port 101, a gas extraction port 102, an upper box body 103 of an upper powder supply box, a sealing plate 104, a lower box body 105 of an upper powder supply box, a side sealing plate 106, a first powder blocking block 107, a second powder blocking block 108, and a powder supply roller 109. The powder supply port 101 is at the top, and a flange interface is installed on it, which is connected to an external pipeline for feeding. The gas extraction port 102 is installed on the side to access negative pressure for feeding. The sealing plate 104 cooperates with the upper box body 103 of the upper powder supply box to form a closed space, which is driven by a first pneumatic push rod 2 , the fifth pneumatic push rod 28 controls the opening and closing of the sealing plate 104. In the loading state, when the sealing plate 104 is in the open state, the powder in the upper box body 103 of the upper powder supply box falls into the lower box body 105 of the upper powder supply box. The first powder blocking block 107, the second powder blocking block 108, and the side sealing plate 106 are respectively installed on the four sides of the bottom of the lower box body 105 of the upper powder supply box, and are used to seal the powder supply roller 109 to prevent the powder from leaking onto the powder spreading table plane 5. The main function of the powder supply roller 109 is to supply powder in a quantitative manner. When it has no rotational motion, the powder is self-sealed and there is no leakage. When it rotates, the powder is quantitatively supplied to the powder spreading table plane 5.

[0082] In a further embodiment of the utility model, the powder spreading trolley 10 is composed of a powder spreading roller mounting frame 1001 and a powder spreading roller 1002. The powder spreading roller 1002 is mounted on the powder spreading roller mounting frame 1001 through a bearing and is powered by a fourth stepper motor 36. The main function of the powder spreading roller 1002 is to rotate when the powder spreading trolley 10 moves, so as to spread the powder on the discharge port 1502.

[0083] In a further embodiment of the utility model, the waste powder box outlet 601 and the waste powder box outlet 1101 are the outlets of the left waste powder box 6 and the upper molding powder cleaning box 12, which are used for automatic powder discharge of the left waste powder box 6 and the right waste powder box 11.

[0084] In a further embodiment of the utility model, the upper molding powder cleaning box 12 is composed of a left box body 1201 of the upper molding powder cleaning box and a right box body 1202 of the upper molding powder cleaning box, which is mainly used to accommodate the cleaning of supporting powder and processed molded parts. The discharge port 1502 is installed below the left box body 1201 of the upper molding powder cleaning box, and the discharge port 1502 is connected to the molding powder spreading plate 1402. The electric push rod 1701 is installed on the electric push rod sleeve 1702 through a threaded connection. The main function of the molding powder spreading plate 1402 is to control the thickness of the molded parts by the servo electric push cylinder 17. The lower molding box side plate 1401, the left box body 1201 of the upper molding powder cleaning box and the discharge port 1502 form a closed space to prevent powder leakage. The isolation net 701 and the powder isolation net 1501 are installed Installed on the left sealing plate 705 and the right sealing plate 706 of the powder cleaning box, the left powder cleaning module 7 consists of a powder cleaning box body 704, a left sealing plate 705 and a right sealing plate 706 of the powder cleaning box, an isolation net 701, a material baffle plate 702, a powder isolation net 1501, a waste powder outlet 703 and a material outlet 1502, which are used for powder cleaning, and the waste powder outlet 703 and the material outlet 1502 are installed below the left sealing plate 705 and the right sealing plate 706 of the powder cleaning box, which are used to extract the processed waste powder outside the body, the material baffle plate 702 is installed on the second pneumatic push rod 801, and the second pneumatic push rod 801 is installed on the pneumatic push rod cylinder 802, the material baffle plate 702 is used to control the removal of the processed workpiece, and the push rod 1601 is installed on the push rod sleeve 1602.

[0085] In a further embodiment of the utility model, before starting the processing, the sealing plate 104 is in a closed state, the gas extraction port 102 is vacuumized by negative pressure, the powder consumables enter the upper box body 103 of the upper powder supply box through the powder supply port 101, the sealing plate 104 is opened, and the powder falls into the lower box body 105 of the upper powder supply box, the powder supply roller 109 performs a rotational motion to add consumables, and spreads them onto the powder spreading table plane 5, the powder spreading trolley 10 sweeps the powder to the discharge port 1502, and the laser processing is performed. The upper powder supply module 9 on the right side supplies powder, and the powder spreading trolley 10 sweeps the powder back to the discharge port 1502, and the excess waste powder is swept into the left and right sides respectively. The waste powder box 6 and the right side waste powder box 11 are processed in this cycle until the parts are formed. The discharge port 1502 is driven by the servo electric push cylinder 17 and runs until it is flush with the bottom of the left side box 1201 of the upper forming powder cleaning box. The third pneumatic push rod 13 pushes out the upper forming powder cleaning box 12, and the powder and workpiece in the left side box 1201 of the upper forming powder cleaning box fall into the isolation net 701. The waste powder discharge port 703 is started to negatively pump the material out of the machine body. After the powder is cleaned, the second pneumatic push rod 801 drives the baffle plate 702 to open and remove the parts. At the same time, the right side box 1202 of the upper forming powder cleaning box enters the processing of the next workpiece.

[0086] In a further embodiment of the utility model, before printing, the molding powder spreading plate 1402 is pushed to the processing position by the servo electric push cylinder 17, powder is supplied by the left upper powder supply module 1 and / or the right upper powder supply module 9, and is spread flat by the powder spreading trolley 10, and the printing powder on the molding powder spreading plate 1402 is burnt and formed by the optical path system composed of the first laser 29, the beam expander 30, and the second laser 31. As the workpiece is formed layer by layer, the servo electric push cylinder 17 drives the molding powder spreading plate 1402 to move down layer by layer. At this time, the molding powder spreading plate 1402 can be located on the left box body 1201 of the upper molding powder cleaning box or the right box body 120 of the upper molding powder cleaning box. 2, when the molding powder spreading plate 1402 is located in the left box body 1201 of the upper molding powder cleaning box, after the workpiece is completely formed, the servo electric push cylinder 17 drives the molding powder spreading plate 1402 to the same horizontal height as the left powder cleaning module 7, and the third pneumatic push rod 13 pushes the upper molding powder cleaning box 12 to move horizontally, and the workpiece in the left box body 1201 falls into the left powder cleaning module 7, and the molding powder spreading plate 1402 is located in the right box body 1202 of the upper molding powder cleaning box, and the servo electric push cylinder 17 pushes the molding powder spreading plate 1402 to move up to the same horizontal height as the powder spreading table plane 5, and starts printing the next workpiece, realizing non-stop automated processing and continuous printing.

[0087] In a further embodiment of the utility model, the left waste powder box 6 and the right waste powder box 11 are used to collect excess powder on the powder spreading table plane 5, and the left powder cleaning module 7 and the right powder cleaning module 15 are used to collect excess powder. The entire process is in a closed environment and will not cause pollution. The powder inside the equipment is easy to clean and collect, and the collected powder can be reused, thereby reducing loss and waste.

[0088] In a further embodiment of the utility model, a powder feeding port 101 and a gas extraction port 102 are provided at the upper parts of the left upper powder supply module 1 and the right upper powder supply module 9, and a sealing plate 104 is inserted in the left upper powder supply module 1 and the right upper powder supply module 9. By dividing the upper parts of the left upper powder supply module 1 and the right upper powder supply module 9 into closed cavities, the gas extraction port 102 is evacuated to perform negative pressure vacuum, and the material powder is drawn into the upper parts of the left upper powder supply module 1 and the right upper powder supply module 9. The opening and closing of the sealing plate 104 are controlled by the first pneumatic push rod 2 and the fifth pneumatic push rod 28, so that the material powder falls into the lower parts of the left upper powder supply module 1 and the right upper powder supply module 9, thereby realizing automatic loading without manual loading.

[0089] In a further embodiment of the utility model, the left powder cleaning module 7 and the right powder cleaning module 15 have the same structure and are symmetrically arranged. A material baffle plate 702 is provided at the bottom of the left powder cleaning module 7 and the right powder cleaning module 15. The opening and closing of the material baffle plate 702 in the left powder cleaning module 7 and the right powder cleaning module 15 are respectively controlled by the second pneumatic push rod 8 and the fourth pneumatic push rod 16 to realize automatic discharging and facilitate the removal of the workpiece.

[0090] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser sintering 3D printing device for continuous processing, characterized in that: include: A frame and a powder spreading table plane (5), wherein the powder spreading table plane (5) is installed on the top of the frame; An upper main mounting frame (3), the upper main mounting frame (3) being mounted on a powder spreading table plane (5); A left upper powder supply module (1) and a right upper powder supply module (9), wherein the left upper powder supply module (1) and the right upper powder supply module (9) are both mounted on the top of the upper main mounting frame (3); A first sliding track (23), a rack (24) and a second sliding track (25), wherein the first sliding track (23), the rack (24) and the second sliding track (25) are all installed on the powder spreading table plane (5), and the first sliding track (23), the rack (24) and the second sliding track (25) are parallel to each other; A left limiter (22) and a right limiter (38), both of which are installed on the powder spreading table plane (5), and the left limiter (22) and the right limiter (38) are respectively arranged at the left and right ends of the second sliding track (25); A track slider mounting seat plate (37), wherein the track slider mounting seat plate (37) is slidably mounted on the first sliding track (23) and the second sliding track (25); A third stepper motor (35) and a fourth stepper motor (36), wherein the third stepper motor (35) and the fourth stepper motor (36) are both mounted on a track slider mounting base plate (37); A gear (34), the gear (34) is mounted on the output shaft of the third stepping motor (35), and the gear (34) is meshed with the rack (24); A powder spreading trolley (10) is connected to a track slider mounting seat plate (37); The powder spreading trolley (10) comprises: a powder spreading roller mounting frame (1001) and a powder spreading roller (1002), wherein the powder spreading roller (1002) is rotatably mounted in the powder spreading roller mounting frame (1001), the powder spreading roller mounting frame (1001) is connected to a track slider mounting seat plate (37), and a fourth stepping motor (36) is used to drive the powder spreading roller (1002) to rotate; A dust sealing belt (4), the dust sealing belt (4) is installed on the rear side of the upper main installation frame (3) and is in contact with the powder spreading trolley (10); A lower molding box (14), which is installed in the middle of the frame; A left powder cleaning module (7) and a right powder cleaning module (15), both of which are installed in the middle of the frame, and the left powder cleaning module (7) and the right powder cleaning module (15) are respectively arranged on the left and right sides of the lower molding box (14); An upper molding powder cleaning box (12), a first rolling wheel frame (18) and a second rolling wheel frame (20), wherein the front side of the upper molding powder cleaning box (12) is connected to the second rolling wheel frame (20), and the rear side of the upper molding powder cleaning box (12) is connected to the first rolling wheel frame (18), and a first roller groove (19) and a second roller groove (21) are provided in the middle of the frame, the first rolling wheel frame (18) is installed in the first roller groove (19), and the second rolling wheel frame (20) is installed in the second roller groove (21); The lower molding box (14) comprises: a lower molding box side plate (1401) and a molding powder spreading plate (1402), wherein a plurality of lower molding box side plates (1401) are combined to form a box body, the box body is mounted on a frame, and the molding powder spreading plate (1402) is located inside the box body; A third pneumatic push rod (13), the third pneumatic push rod (13) is installed on the frame, and the movable rod of the third pneumatic push rod (13) is connected to the upper molding powder cleaning box (12); The servo electric push cylinder (17) comprises: an electric push rod (1701) and an electric push rod sleeve (1702), wherein the electric push rod (1701) is installed in the electric push rod sleeve (1702), the electric push rod sleeve (1702) is installed on the frame, and the electric push rod (1701) is connected to the bottom of the molding powder spreading plate (1402); A first laser (29), a beam expander (30) and a second laser (31), the second laser (31), the beam expander (30) and the first laser (29) are sequentially mounted on the top of an upper main mounting frame (3) from front to back.

2. The laser sintering 3D printing device for continuous processing according to claim 1, characterized in that: Also includes: The left waste powder box (6) and the right waste powder box (11) are respectively installed at the left and right ends of the dust sealing belt (4); the left waste powder box (6) is provided with a first waste powder box discharge port (601), and the right waste powder box (11) is provided with a second waste powder box discharge port (1101).

3. The laser sintering 3D printing device for continuous processing according to claim 2, characterized in that: Also includes: The left upper powder supply module (1) and the right upper powder supply module (9) have the same structure and are symmetrically arranged. The left upper powder supply module (1) comprises: an upper powder supply box upper box body (103), a sealing plate (104), an upper powder supply box lower box body (105), a side sealing plate (106), a first powder blocking block (107), a second powder blocking block (108) and a powder supply roller (109). The upper powder supply box lower box body (105) is installed on the top of the upper main installation frame (3). The upper powder supply box upper box body (103) is installed on the upper part of the upper powder supply box lower box body (105) and is connected to the upper powder supply box lower box body (105). The sealing plate (104) is arranged on the upper powder supply box. The upper box body (103) is used to separate the upper box body (103) of the upper powder supply box and the lower box body (105) of the upper powder supply box. The upper box body (103) of the upper powder supply box is provided with a powder supply port (101) and a gas extraction port (102). The inner wall of the bottom opening of the lower box body (105) of the upper powder supply box is provided with a side sealing plate (106). The bottom opening of the lower box body (105) of the upper powder supply box is provided with a first powder blocking block (107), a second powder blocking block (108) and a powder supply roller (109). The second powder blocking block (108) and the first powder blocking block (107) and the second powder blocking block (108) are respectively provided on the left and right sides of the powder supply roller (109).

4. The laser sintering 3D printing device for continuous processing according to claim 3, characterized in that: Also includes: A first pneumatic push rod (2) and a fifth pneumatic push rod (28), two first pneumatic push rods (2) and two fifth pneumatic push rods (28) are installed on the top of the upper main mounting frame (3), the two first pneumatic push rods (2) are respectively installed on the front sides of the left upper powder supply module (1) and the right upper powder supply module (9), and the two fifth pneumatic push rods (28) are respectively installed on the rear sides of the left upper powder supply module (1) and the right upper powder supply module (9), the first pneumatic push rod (2) and the fifth pneumatic push rod (28) located on the left are used to drive the displacement of the sealing plate (104) of the left upper powder supply module (1), and the first pneumatic push rod (2) and the fifth pneumatic push rod (28) located on the right are used to drive the displacement of the sealing plate (104) of the right upper powder supply module (9).

5. The laser sintering 3D printing device for continuous processing according to claim 4, characterized in that: Also includes: A first stepper motor (26) and a first stepper motor mounting frame (27), wherein the first stepper motor mounting frame (27) is mounted on the upper main mounting frame (3), and the first stepper motor (26) is mounted on the first stepper motor mounting frame (27). The first stepper motor (26) is used to drive the powder supply roller (109) of the left upper powder supply module (1) to rotate.

6. The laser sintering 3D printing device for continuous processing according to claim 5, characterized in that: A second stepper motor (32) and a second stepper motor mounting frame (33), wherein the second stepper motor mounting frame (33) is mounted on the upper main mounting frame (3), and the second stepper motor (32) is mounted on the second stepper motor mounting frame (33), and the second stepper motor (32) is used to drive the powder supply roller (109) of the right upper powder supply module (9) to rotate.

7. The laser sintering 3D printing device for continuous processing according to claim 6, characterized in that: The left powder cleaning module (7) comprises: an isolation net (701), a material blocking plate (702), a powder cleaning box body (704), a left sealing plate (705) of the powder cleaning box, and a right sealing plate (706) of the powder cleaning box. The powder cleaning box body (704) is installed in the middle of the frame. The right sealing plate (706) of the powder cleaning box and the left sealing plate (705) of the powder cleaning box are installed at the front and rear sides of the powder cleaning box body (704) respectively. A waste powder outlet (703) is provided at the bottom of the powder cleaning box body (704). An isolation net (701) and a material blocking plate (702) are installed inside the powder cleaning box body (704). The material blocking plate (702) is used to cover the waste powder outlet (703). The second pneumatic push rod (8) comprises: a pneumatic push rod cylinder rod (801) and a pneumatic push rod cylinder body (802), wherein the pneumatic push rod cylinder rod (801) is installed in the pneumatic push rod cylinder body (802), the pneumatic push rod cylinder body (802) is installed in the middle of the frame, and the pneumatic push rod cylinder rod (801) is connected to the material blocking plate (702).

8. The laser sintering 3D printing device for continuous processing according to claim 7, characterized in that: The right powder cleaning module (15) comprises: a right powder cleaning box body, a right powder cleaning box baffle plate and a powder isolation net (1501); the right powder cleaning box body is installed in the middle of the frame; a discharge port (1502) is provided at the bottom of the right powder cleaning box body; a powder isolation net (1501) and a right powder cleaning box baffle plate are installed inside the right powder cleaning box body; the right powder cleaning box baffle plate is used to cover the discharge port (1502); The fourth pneumatic push rod (16) comprises: a push rod (1601) and a push rod sleeve (1602), the push rod (1601) is installed in the push rod sleeve (1602), the push rod sleeve (1602) is installed in the middle of the frame, and the push rod (1601) is connected to the right powder cleaning box baffle plate.

9. The laser sintering 3D printing device for continuous processing according to claim 8, characterized in that: The second pneumatic push rod (8) and the fourth pneumatic push rod (16) are symmetrically arranged.

10. The laser sintering 3D printing device for continuous processing according to claim 9, characterized in that: The upper molding powder cleaning box (12) comprises: a left box body (1201) of the upper molding powder cleaning box and a right box body (1202) of the upper molding powder cleaning box, and the left box body (1201) of the upper molding powder cleaning box and the right box body (1202) of the upper molding powder cleaning box are connected to each other.

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