A laser sintering 3D printing device for continuous processing

Abstract

The utility model discloses a laser sintering 3D printing device for continuous processing, relates to the technical field of selective laser sintering processing, solves the problem that continuous powder supply and non-stop automatic processing cannot be formed, wherein a profile frame is composed of a plurality of overlapping profiles, a powder spreading table plane, a secondary powder supply device, a lower forming box module and a first pneumatic push rod are all installed on the profile frame, an upper forming box module is slidably installed on the profile frame, an upper main body frame is installed on the powder spreading table plane, an upper powder supply module, a solid-state laser, a beam expander and a galvanometer are all installed on the upper main body frame, a slider seat is slidably installed on the upper main body frame, a powder spreading trolley is installed on the slider seat, a powder feeding port and an air suction port are provided on the upper part of the upper powder supply module, and the powder material enters the upper powder supply module from the powder feeding port by vacuumizing the air suction port with negative pressure, thereby realizing automatic and continuous powder supply of the upper powder supply module, and the powder collection process is all in a closed environment and can be reused.

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 it 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] A profile frame 7, wherein the profile frame 7 is composed of a plurality of profiles 5 overlapped;

[0009] The upper main frame 2 and the powder-laying table plane 4, the powder-laying table plane 4 is installed on the top of the profile frame 7, and the upper main frame 2 is installed on the powder-laying table plane 4;

[0010] An upper powder supply module 1, which is installed on the top of the upper main frame 2;

[0011] A secondary powder supply device 9, which is mounted on the profile frame 7;

[0012] The first track 22, the second track 23 and the rack 26 are all installed on the powder spreading table plane 4, and the first track 22, the second track 23 and the rack 26 are all arranged on the rear side of the upper main frame 2, and the first track 22, the second track 23 and the rack 26 are parallel to each other;

[0013] A slider seat and a second stepping motor 29, wherein the slider seat is slidably mounted on the first rail 22 and the second rail 23, and the second stepping motor 29 is mounted on the slider seat;

[0014] The left limiter 21 and the right limiter 31 are both installed on the powder spreading table plane 4, and the left limiter 21 and the right limiter 31 are respectively arranged at the left and right ends of the second track 23;

[0015] A gear 28, the gear 28 is mounted on the output end of the second stepping motor 29, and the gear 28 is meshed with the rack 26;

[0016] The upper molding box module 8, the first slide rail roller 16 and the second slide rail roller 19, the front and rear sides of the upper molding box module 8 are respectively provided with the second slide rail roller 19 and the first slide rail roller 16, the middle part of the profile frame 7 is provided with a second slide rail groove 20 and a first slide rail groove 17, the second slide rail roller 19 is slidably mounted on the second slide rail groove 20, and the first slide rail roller 16 is slidably mounted on the first slide rail groove 17;

[0017] A powder spreading trolley 11, wherein the powder spreading trolley 11 is mounted on a slider seat;

[0018] The solid-state laser 27, the beam expander 32 and the galvanometer 33 are sequentially mounted on the top of the upper main frame 2;

[0019] The lower molding box module 14 is mounted on the profile frame 7;

[0020] The servo electric push rod 15 includes: an electric push rod 1501 and an electric push rod cylinder 1502, the electric push rod 1501 is installed in the electric push rod cylinder 1502, the electric push rod 1501 is connected to the powder laying processing platform 801 of the upper molding box module 8, and the electric push rod cylinder 1502 is connected to the bottom of the lower molding box module 14;

[0021] The first pneumatic push rod 13 includes: a pneumatic push rod cylinder rod 1301 and a pneumatic push rod cylinder body 1302 . The pneumatic push rod cylinder rod 1301 is connected to the upper forming box module 8 , and the pneumatic push rod cylinder body 1302 is installed on the profile frame 7 .

[0022] The above-mentioned laser sintering 3D printing device for continuous processing, wherein the upper powder supply module 1 includes: an upper box body 103 of the upper powder supply module, a sealing plate 104, a lower box body 105 of the upper powder supply module, a first powder blocking block 106, a second powder blocking block 107, a sealing side plate 108 and a powder supply roller 109, the upper box body 103 of the upper powder supply module is connected to the lower box body 105 of the upper powder supply module, the lower box body 105 of the upper powder supply module is installed on the top of the upper main frame 2, and the sealing plate 104 is located in the upper box body 103 of the upper powder supply module The sealing plate 104 is used to separate the upper box body 103 of the upper powder supply module and the lower box body 105 of the upper powder supply module. The upper box body 103 of the upper powder supply module is provided with a powder feeding port 101 and an air suction port 102. The bottom inner wall of the lower box body 105 of the upper powder supply module is installed with a sealing side plate 108. The bottom of the lower box body 105 of the upper powder supply module is installed with a powder supply roller 109, a first powder blocking block 106 and a second powder blocking block 107. The first powder blocking block 106 and the second powder blocking block 107 are respectively arranged on the left and right sides of the powder supply roller 109.

[0023] The above-mentioned laser sintering 3D printing equipment for continuous processing, wherein the powder spreading cart 11 includes: a powder spreading cart main frame 1101, a powder spreading roller 1102 and a roller 1103, the powder spreading roller 1102 is installed in the powder spreading cart main frame 1101, and the two rollers 1103 are respectively installed on the left and right sides of the bottom of the powder spreading cart main frame 1101, and the powder spreading cart main frame 1101 is installed on the slider seat.

[0024] The above-mentioned laser sintering 3D printing device for continuous processing, among others, further includes: a third stepper motor 30, wherein the third stepper motor 30 is mounted on the second stepper motor 29, and the third stepper motor 30 is used to drive the powder spreading roller 1102 to rotate.

[0025] The above-mentioned laser sintering 3D printing device for continuous processing, wherein the secondary powder supply device 9 includes: a swing block body 901, a side sealing plate 902, a swing block impact cam head 903, a slider 904, a powder supply plate 905, a powder supply plate connecting frame 906, a spring position mounting shaft 907, a swing block mounting shaft 908, a first shaft 909, a spring 910, a connecting rod 911 and a second shaft 912, the swing block body 901 is mounted on the profile frame 7 through the swing block mounting shaft 908, the swing block impact cam heads 903 are installed at both ends of the swing block body 901, and the powder supply plate 905 is installed on the supply One end of the powder plate connecting frame 906, the slider 904 is installed at the other end of the powder supply plate connecting frame 906, the second shaft 912 is installed on the powder supply plate connecting frame 906, the end of the second shaft 912 is connected to one end of the connecting rod 911, the first shaft 909 is installed on the swing block impact cam head 903, the end of the first shaft 909 is connected to the other end of the connecting rod 911, the spring position mounting shaft 907 is installed on the profile frame 7, one end of the spring 910 is connected to the spring position mounting shaft 907, the other end of the spring 910 is connected to the swing block body 901, and the side sealing plate 902 is installed on the profile frame 7.

[0026] The above-mentioned laser sintering 3D printing device for continuous processing, among other things, further includes: a cylindrical slide rail 18 , on which the profile frame 7 is mounted, and on which the slider 904 is slidably mounted.

[0027] The above-mentioned laser sintering 3D printing device for continuous processing, among other things, also includes: a first stepper motor 24 and a stepper motor mounting bracket 25, the stepper motor mounting bracket 25 is mounted on the upper main frame 2, the first stepper motor 24 is mounted on the stepper motor mounting bracket 25, and the first stepper motor 24 drives the powder supply roller 109 to rotate.

[0028] The above-mentioned laser sintering 3D printing device for continuous processing, among other things, further includes: a powder cleaning felt 10 , which is installed on the lower side of the upper molding box module 8 .

[0029] The above-mentioned laser sintering 3D printing equipment for continuous processing, among other things, also includes: a dust isolation belt 3, a left waste powder box 6 and a right waste powder box 12. The dust isolation belt 3 is installed on the rear side of the upper main frame 2 and is attached to the powder spreading trolley 11. The left waste powder box 6 and the right waste powder box 12 are both installed on the profile frame 7 and are located at the left and right ends of the dust isolation belt 3. A waste powder box discharge port 601 is opened on the left waste powder box 6.

[0030] The above-mentioned laser sintering 3D printing equipment for continuous processing, among others, also includes: a second pneumatic push rod 34, a third pneumatic push rod 35 and a sealing plate mounting bracket 36, the second pneumatic push rod 34 and the third pneumatic push rod 35 are both installed on the top of the upper main frame 2, the second pneumatic push rod 34 and the third pneumatic push rod 35 are respectively arranged on the front and rear sides of the upper box 103 of the upper powder supply module, one end of the sealing plate mounting bracket 36 is connected to the cylinder rod end of the second pneumatic push rod 34, the other end of the sealing plate mounting bracket 36 is connected to the cylinder rod end of the third pneumatic push rod 35, and the sealing plate 104 is installed on the sealing plate mounting bracket 36.

[0031] Due to the adoption of the above technology, the utility model has the following positive effects compared with the prior art:

[0032] (1) In the present invention, loading, laser sintering and discharging are all realized by mechanical automatic operation, realizing non-stop automatic processing, continuous printing and automatic discharging, which is convenient for removing workpieces;

[0033] (2) In the present invention, a powder feeding port and an air extraction port are provided at the upper part of the upper powder supply module. After the sealing plate is inserted into the upper powder supply module, the upper part of the upper powder supply module is divided into a closed cavity. By vacuumizing the air extraction port with negative pressure, the powder material enters the upper powder supply module from the powder feeding port. Subsequently, the second pneumatic push rod and the third pneumatic push rod control the opening and closing of the sealing plate, thereby realizing automatic and continuous powder supply of the upper powder supply module.

[0034] (3) In the utility model, the left waste powder box and the right waste powder box have the same structure and are located at the left and right ends of the dust isolation zone. The powder is pushed into the left waste powder box and the right waste powder box by a powder spreading trolley for easy collection. A discharge port is provided at the bottom of the lower molding box module, and the excess material powder in the lower molding box module is sucked out by negative pressure suction. The powder collection 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a laser sintering 3D printing device for continuous processing of the utility model.

[0036] Figure 2 It is a cross-sectional view of a laser sintering 3D printing device for continuous processing of the utility model.

[0037] Figure 3 It is a left view of a laser sintering 3D printing device for continuous processing according to the utility model.

[0038] Figure 4 It is a top view of a laser sintering 3D printing device for continuous processing of the utility model.

[0039] Figure 5 It is a structural schematic diagram of a secondary powder supply device of a laser sintering 3D printing device for continuous processing of the utility model.

[0040] Figure 6 It is a front side view of a laser sintering 3D printing device for continuous processing of the utility model.

[0041] In the attached figure: 1, upper powder supply module; 2, upper main frame; 3, dust isolation belt; 4, powder spreading table plane; 5, profile; 6, left waste powder box; 7, profile frame; 8, upper molding box module; 9, secondary powder supply device; 10, powder cleaning felt; 11, powder spreading trolley; 12, right waste powder box; 13, first pneumatic push rod; 14, lower molding box module; 15, servo electric push rod; 16, first slide rail roller; 17, first slide rail groove; 18, round Column slide rail; 19, second slide rail roller; 20, second slide rail groove; 21, left limit; 22, first track; 23, second track; 24, first stepper motor; 25, stepper motor mounting bracket; 26, rack; 27, solid-state laser; 28, gear; 29, second stepper motor; 30, third stepper motor; 31, right limit; 32, beam expander; 33, galvanometer; 34, second pneumatic push rod; 35, third pneumatic push rod; 36 , sealing plate mounting frame; 101, powder feeding port; 102, exhaust port; 103, upper box of upper powder supply module; 104, sealing plate; 105, lower box of upper powder supply module; 106, first powder blocking block; 107, second powder blocking block; 108, sealing side plate; 109, powder supply roller; 601, waste powder box discharge port; 801, powder spreading processing platform; 1501, electric push rod; 1502, electric push rod cylinder; 1101, main frame of powder spreading vehicle ; 1102, powder spreading roller; 1103, roller; 1301, pneumatic push rod cylinder rod; 1302, pneumatic push rod cylinder body; 901, swing block body; 902, side sealing plate; 903, swing block impact cam head; 904, slider; 905, powder supply plate; 906, powder supply plate connecting frame; 907, spring position mounting shaft; 908, swing block mounting shaft; 909, first shaft; 910, spring; 911, connecting rod; 912, second shaft. DETAILED DESCRIPTION

[0042] 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.

[0043] Please refer to Figures 1 to 6 As shown, a laser sintering 3D printing device for continuous processing is shown, which includes:

[0044] A profile frame 7, the profile frame 7 is composed of a plurality of profiles 5 overlapped;

[0045] The upper main frame 2 and the powder-laying table plane 4, the powder-laying table plane 4 is installed on the top of the profile frame 7, and the upper main frame 2 is installed on the powder-laying table plane 4;

[0046] An upper powder supply module 1, which is installed on the top of the upper main frame 2;

[0047] A secondary powder supply device 9, which is mounted on the profile frame 7;

[0048] The first track 22, the second track 23 and the rack 26 are all installed on the powder spreading table plane 4, and the first track 22, the second track 23 and the rack 26 are all arranged on the rear side of the upper main frame 2, and the first track 22, the second track 23 and the rack 26 are parallel to each other;

[0049] A slider seat and a second stepping motor 29, the slider seat is slidably mounted on the first rail 22 and the second rail 23, and the second stepping motor 29 is mounted on the slider seat;

[0050] The left limiter 21 and the right limiter 31 are both installed on the powder spreading table plane 4, and the left limiter 21 and the right limiter 31 are respectively arranged at the left and right ends of the second track 23;

[0051] Gear 28, gear 28 is installed at the output end of the second stepping motor 29, and gear 28 is meshed with rack 26;

[0052] The upper molding box module 8, the first slide rail roller 16 and the second slide rail roller 19, the front and rear sides of the upper molding box module 8 are respectively provided with the second slide rail roller 19 and the first slide rail roller 16, the middle part of the profile frame 7 is provided with a second slide rail groove 20 and a first slide rail groove 17, the second slide rail roller 19 is slidably mounted on the second slide rail groove 20, and the first slide rail roller 16 is slidably mounted on the first slide rail groove 17;

[0053] A powder spreading trolley 11, which is mounted on a slider seat;

[0054] The solid-state laser 27, the beam expander 32 and the galvanometer 33 are sequentially mounted on the top of the upper main frame 2;

[0055] The lower molding box module 14 is mounted on the profile frame 7;

[0056] The servo electric push rod 15 includes: an electric push rod 1501 and an electric push rod cylinder 1502, the electric push rod 1501 is installed in the electric push rod cylinder 1502, the electric push rod 1501 is connected to the powder laying processing platform 801 of the upper molding box module 8, and the electric push rod cylinder 1502 is connected to the bottom of the lower molding box module 14;

[0057] The first pneumatic push rod 13 includes: a pneumatic push rod cylinder rod 1301 and a pneumatic push rod cylinder body 1302 . The pneumatic push rod cylinder rod 1301 is connected to the upper forming box module 8 , and the pneumatic push rod cylinder body 1302 is installed on the profile frame 7 .

[0058] Further, in a preferred embodiment, the upper powder supply module 1 includes: an upper powder supply module upper box 103, a sealing plate 104, an upper powder supply module lower box 105, a first powder blocking block 106, a second powder blocking block 107, a sealing side plate 108 and a powder supply roller 109, the upper powder supply module upper box 103 and the upper powder supply module lower box 105 are connected, the upper powder supply module lower box 105 is installed on the top of the upper main frame 2, the sealing plate 104 is located in the upper powder supply module upper box 103, and the sealing plate 104 is located in the upper powder supply module upper box 103. 04 is used to separate the upper box body 103 of the upper powder supply module and the lower box body 105 of the upper powder supply module. The upper box body 103 of the upper powder supply module is provided with a powder feeding port 101 and an air exhaust port 102. The bottom inner wall of the lower box body 105 of the upper powder supply module is installed with a sealing side plate 108. The bottom of the lower box body 105 of the upper powder supply module is installed with a powder supply roller 109, a first powder blocking block 106 and a second powder blocking block 107. The first powder blocking block 106 and the second powder blocking block 107 are respectively arranged on the left and right sides of the powder supply roller 109.

[0059] Furthermore, in a preferred embodiment, the powder spreading cart 11 includes: a powder spreading cart main frame 1101, a powder spreading roller 1102 and rollers 1103, the powder spreading roller 1102 is installed in the powder spreading cart main frame 1101, and the two rollers 1103 are respectively installed on the left and right sides of the bottom of the powder spreading cart main frame 1101, and the powder spreading cart main frame 1101 is installed on the slider seat.

[0060] Furthermore, in a preferred embodiment, it also includes: a third stepper motor 30, the third stepper motor 30 is installed on the second stepper motor 29, and the third stepper motor 30 is used to drive the powder spreading roller 1102 to rotate.

[0061] Further, in a preferred embodiment, the secondary powder supply device 9 includes: a swing block body 901, a side sealing plate 902, a swing block impact cam head 903, a slider 904, a powder supply plate 905, a powder supply plate connecting frame 906, a spring position mounting shaft 907, a swing block mounting shaft 908, a first shaft 909, a spring 910, a connecting rod 911 and a second shaft 912, the swing block body 901 is mounted on the profile frame 7 through the swing block mounting shaft 908, the swing block impact cam heads 903 are installed at both ends of the swing block body 901, and the powder supply plate 905 is mounted on the powder supply plate connecting frame One end of 906, the slider 904 is installed on the other end of the powder supply plate connecting frame 906, the second shaft 912 is installed on the powder supply plate connecting frame 906, the end of the second shaft 912 is connected to one end of the connecting rod 911, the first shaft 909 is installed on the swing block impact cam head 903, the end of the first shaft 909 is connected to the other end of the connecting rod 911, the spring position mounting shaft 907 is installed on the profile frame 7, one end of the spring 910 is connected to the spring position mounting shaft 907, the other end of the spring 910 is connected to the swing block body 901, and the side sealing plate 902 is installed on the profile frame 7.

[0062] Furthermore, in a preferred embodiment, it also includes: a cylindrical slide rail 18, the cylindrical slide rail 18 is installed on the profile frame 7, and the slider 904 is slidably installed on the cylindrical slide rail 18.

[0063] Furthermore, in a preferred embodiment, it also includes: a first stepper motor 24 and a stepper motor mounting frame 25, the stepper motor mounting frame 25 is mounted on the upper main frame 2, the first stepper motor 24 is mounted on the stepper motor mounting frame 25, and the first stepper motor 24 drives the powder supply roller 109 to rotate.

[0064] Furthermore, in a preferred embodiment, it also includes: a powder cleaning felt 10, which is installed on the lower side of the upper molding box module 8.

[0065] Furthermore, in a preferred embodiment, it also includes: a dust isolation belt 3, a left waste powder box 6 and a right waste powder box 12. The dust isolation belt 3 is installed on the rear side of the upper main frame 2 and is close to the powder spreading trolley 11. The left waste powder box 6 and the right waste powder box 12 are both installed on the profile frame 7 and are located at the left and right ends of the dust isolation belt 3. A waste powder box discharge port 601 is opened on the left waste powder box 6.

[0066] Furthermore, in a preferred embodiment, it also includes: a second pneumatic push rod 34, a third pneumatic push rod 35 and a sealing plate mounting bracket 36, the second pneumatic push rod 34 and the third pneumatic push rod 35 are both installed on the top of the upper main frame 2, the second pneumatic push rod 34 and the third pneumatic push rod 35 are respectively arranged on the front and rear sides of the upper box 103 of the upper powder supply module, one end of the sealing plate mounting bracket 36 is connected to the cylinder rod end of the second pneumatic push rod 34, the other end of the sealing plate mounting bracket 36 is connected to the cylinder rod end of the third pneumatic push rod 35, and the sealing plate 104 is installed on the sealing plate mounting bracket 36.

[0067] 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.

[0068] The utility model also has the following implementation methods based on the above:

[0069] In a further embodiment of the utility model, the device is composed of an upper powder supply module 1, an upper main frame 2, a dust isolation belt 3, a powder table plane 4, a profile 5, a left waste powder box 6, a profile frame 7, an upper molding box module 8, a secondary powder supply device 9, a powder cleaning felt 10, a powder trolley 11, a right waste powder box 12, a first pneumatic push rod 13, a lower molding box module 14, a servo electric push rod 15, a first slide rail roller 16, a first slide rail groove 17, a cylindrical slide rail 18, a second slide rail roller 19, a second slide rail groove 20, a left limit 21, a first track 22, a second track 23, a first stepper motor 24, a stepper motor mounting frame 25, a rack 26, a solid-state laser 27, a gear 28, a second stepper motor 29, a first stepper motor 30, a second stepper motor 31, a first stepper motor 32, a first stepper motor 33, a first stepper motor 34, a first stepper motor mounting frame 35, a rack 26, a solid-state laser 27, a gear 28, a second stepper motor 35, a second stepper motor 36, a second stepper motor 37, a second stepper motor 38, a second stepper motor 39, a second stepper motor 40, a second stepper motor 41, a second stepper motor 42, a second stepper motor 43, a second stepper motor 44, a second stepper motor 45, a second stepper motor 46, a second stepper motor 47, a second stepper motor 48, a second stepper motor 49, a second stepper motor 50, a second stepper motor 51, a second stepper motor 52, a second stepper motor 53, a second stepper motor 54, a second stepper The machine is composed of a stepper motor 29, a third stepper motor 30, a right limiter 31, a beam expander 32, a galvanometer 33, a second pneumatic push rod 34, a third pneumatic push rod 35, and a sealing plate mounting frame 36. The upper powder supply module 1 is installed on the upper left of the machine for quantitative supply of powder. The upper main frame 2 is installed on the powder spreading table plane 4 to support the upper powder supply module 1 and the optical path system. The powder spreading table plane 4 is installed on the profile 5 to support the powder spreading trolley 11, the secondary powder supply device 9, the left limiter 21, the right limiter 31, the first track 22, the second track 23, the rack 26, the left waste powder box 6, the first pneumatic push rod 13, and the upper molding box module 8 is installed through the first slide rail roller 16 and the second slide rail roller 19. Installed on the first slide groove 17 and the second slide groove 20, the first slide groove 17 and the second slide groove 20 are installed on the frame, the powder cleaning felt 10 is installed on the side and lower part of the upper molding box module 8, and is used to clean the residual powder on the powder processing platform 801, the first pneumatic push rod 13 is installed on the frame and connected to the upper molding box module 8, the lower molding box module 14 is installed on the profile frame 7 below the upper molding box module 8, the sealing plate mounting frame 36 is installed on the second pneumatic push rod 34 and the third pneumatic push rod 35, the second pneumatic push rod 34 and the third pneumatic push rod 35 are installed on the top of the upper main frame 2, and the optical path system is installed in sequence on the upper main frame by the solid-state laser 27, the beam expander 32, and the galvanometer 33 2, a second stepper motor 29 is installed on a slider seat at the rear side of the powder spreading trolley 11, and the slider seat is installed on the first track 22 and the second track 23. The gear 28 is installed on the shaft of the second stepper motor 29, and the rack 26 is meshed with the gear 28 for transmission to realize the horizontal movement of the powder spreading trolley 11. The left limit 21 and the right limit 31 are installed on both sides of the first track 22 to detect the limit of the powder spreading trolley 11. The dust isolation belt 3 is installed on the powder spreading trolley 11 and fits tightly with the rear side of the upper main frame 2 to prevent powder from leaking into the transmission system and causing jamming. The third stepper motor 30 is installed above the second stepper motor 29 to drive the rotation of the powder spreading roller 1102.

[0070] In a further embodiment of the present invention, the upper powder supply module 1 is composed of a powder feeding port 101, an air suction port 102, an upper box body 103 of the upper powder supply module, a sealing plate 104, a lower box body 105 of the upper powder supply module, a first powder blocking block 106, a second powder blocking block 107, a sealing side plate 108, and a powder supply roller 109. The feeding port 101 is installed above the upper box body 103 of the upper powder supply module for accessing the pipeline and entering the external consumables. The air suction port 102 is installed above the upper box body 103 of the upper powder supply module. The sealing plate 104 is connected to the sealing plate mounting frame 36 and is installed on the upper box body 103 of the upper powder supply module to form a sealed cavity. The lower box body 105 of the upper powder supply module is connected to the upper supply module through a flange. The upper box body 103 of the powder module is connected, the first powder blocking block 106, the second powder blocking block 107, and the sealing side plate 108 are installed around the bottom side wall of the lower box body 105 of the upper powder supply module, the powder supply roller 109 is installed on the lower box body 105 of the upper powder supply module through a bearing, the stepper motor mounting frame 25 is installed on the upper main frame 2, and the first stepper motor 24 is installed on the stepper motor mounting frame 25. The first stepper motor 24 is connected to the powder supply roller 109 through a coupling, so as to realize the rotation movement of the powder supply roller 109 and perform quantitative powder supply. When the powder supply roller 109 is not moving, due to the effects of the sealing side plate 108, the first powder blocking block 106, and the second powder blocking block 107, the powder is self-locking and leak-free.

[0071] In a further embodiment of the utility model, a waste powder box outlet 601 is installed at the rear of the left waste powder box 6 for accessing a pipeline to discharge waste powder, a powder spreading roller 1102 is installed on the main frame 1101 of the powder spreading vehicle for evenly spreading the powder on the powder spreading processing platform 801, and a roller 1103 is installed on the main frame 1101 of the powder spreading vehicle for smooth horizontal movement of the powder spreading vehicle 11.

[0072] In a further embodiment of the utility model, the swing block body 901 is installed on the profile frame 7 through the swing block mounting shaft 908, and the swing block body 901 can realize swinging motion along the rotating shaft of the swing block mounting shaft 908, the spring position mounting shaft 907 is installed on the profile frame 7, the spring 910 is installed on the swing block body 901 and the spring position mounting shaft 907, and is used to limit the swing position of the swing block body 901, the first shaft 909 is installed on one side of the swing block body 901, the connecting rod 911 is installed on the first shaft 909 and the second shaft 912, the powder supply plate connecting frame 906 is installed on the second shaft 912, the powder supply plate 905 is installed on the powder supply plate connecting frame 906, and is used to carry the powder of the secondary powder supply, the swing block impact cam head 903 is installed at both ends of the swing block body 901, the powder supply plate 905 and the side sealing plate 902 cooperate with each other to realize up and down motion, and the cylindrical slide rail 18 is installed on the slider 904 for motion guidance.

[0073] In a further embodiment of the utility model, the powder spreading processing platform 801 is installed on the electric push rod 1501, the electric push rod 1501 is installed on the electric push rod cylinder 1502 through a screw drive, the electric push rod cylinder 1502 is installed on the mounting plate at the bottom of the lower molding box module 14, the pneumatic push rod cylinder 1301 is installed on the upper molding box module 8, the pneumatic push rod cylinder 1302 is installed on the frame, and the upper molding box module 8 is pushed out to take out the workpiece, and the mesh plate on the side wall of the lower molding box module 14 is used to discharge the powder on the powder spreading processing platform 801 under the action of negative pressure.

[0074] In a further embodiment of the utility model, when in use, the sealing plate 104 is closed, the vacuum port 102 draws negative pressure, the powder enters from the powder feeding port 101, the sealing plate 104 is opened, the powder enters the lower box 105 of the upper powder supply module, the powder supply roller 109 is rotated for feeding, the powder spreading trolley 11 is started, the powder is spread on the powder spreading processing platform 801, the excess powder enters the powder supply plate 905, the swing block is pressed down to hit the right side of the cam head 903, the powder supply plate connecting frame 906 moves to be flush with the powder spreading platform plane 4, laser sintering, the powder spreading trolley 11 sweeps back to sweep the powder out of the powder supply plate 905, and at the same time, the swing block is pressed down to hit the left side of the cam head 903, and the powder supply plate 905 sinks. The powder is evenly spread on the powder spreading processing platform 801 and laser sintered in the side sealing plate 902 until the part is formed. The upper plane of the powder spreading processing platform 801 moves to the lower forming box module 14, and the negative pressure extraction is started to extract the powder from the mesh plate of the lower forming box module 14 out of the body, leaving only the workpiece on the powder spreading processing platform 801. The upper plane of the powder spreading processing platform 801 is driven by the electric push rod 1501 to move to be flush with the bottom of the upper forming box module 8. The first pneumatic push rod 13 pushes the upper forming box module 8 to push the workpiece out of the body and then returns to its original position. The powder spreading processing platform 801 moves up to the initial processing position for the next part processing.

[0075] In a further embodiment of the present invention, Figure 6 As shown, when the equipment is not started, the upper surface of the powder supply plate 905 is in the same plane as the powder spreading table plane 4 and is located in the rectangular through hole on the powder spreading table plane 4. During the movement of the powder spreading cart 11, the swing block protruding on the powder spreading table plane 4 is pushed to hit the cam head 903. The swing block body 901 is installed on the profile frame 7 through the swing block mounting shaft 908. The swing block body 901 swings, and the powder on the powder supply plate 905 falls onto the powder spreading processing platform 801. After the powder spreading cart 11 leaves the swing block and hits the cam head 903, under the action of the spring 910, the swing block body 901, the powder supply plate 905 and the swing block hit the cam head 903 are reset.

[0076] In a further embodiment of the utility model, after the servo electric push rod 15 pushes the powder spreading processing platform 801 to rise to the processing position, the upper powder supply module 1 supplies powder and spreads the powder onto the powder spreading processing platform 801 through the powder spreading trolley 11, and the optical path system composed of the solid-state laser 27, the beam expander 32, and the galvanometer 33 performs laser sintering on the powder spreading processing platform 801. As the workpiece is formed layer by layer, the servo electric push rod 15 drives the powder spreading processing platform 801 to start moving down layer by layer. After the excess powder is pushed onto the powder supply plate 905 with the powder spreading trolley 11, the swing block is pushed to hit the cam head 903, so that the excess powder is moved onto the powder spreading processing platform 801, and the powder spreading processing platform 801 is sintered by the optical path system. The powder on the workpiece is laser sintered. After the workpiece is formed, the powder processing platform 801 moves down to the same level as the lower molding box module 14. A mesh plate is provided in the lower molding box module 14, and a discharge port is provided at the bottom of the lower molding box module 14. The excess material powder in the lower molding box module 14 is sucked out by negative pressure suction, and then the first pneumatic push rod 13 pushes the upper molding box module 8 to move horizontally to the side of the lower molding box module 14 to discharge the workpiece. After the discharge is completed, the first pneumatic push rod 13 drives the upper molding box module 8 to reset, and the servo electric push rod 15 pushes the powder processing platform 801 to rise to the processing position again, realizing non-stop automated processing, continuous printing and automatic discharging, which is convenient for removing the workpiece.

[0077] In a further embodiment of the utility model, a powder feeding port 101 and an exhaust port 102 are provided on the upper portion of the upper powder supply module 1. After the sealing plate 104 is inserted into the upper powder supply module 1, the upper portion of the upper powder supply module 1 is separated into a closed cavity. By vacuumizing the exhaust port 102 with negative pressure, the powder material enters the upper powder supply module 1 from the powder feeding port 101. Subsequently, the opening and closing of the sealing plate 104 are controlled by the second pneumatic push rod 34 and the third pneumatic push rod 35, thereby realizing automatic and continuous powder supply of the upper powder supply module 1.

[0078] In a further embodiment of the utility model, the left waste powder box 6 and the right waste powder box 12 have the same structure and are located at the left and right ends of the dust isolation zone 3. The powder is pushed into the left waste powder box 6 and the right waste powder box 12 by the powder spreading trolley 11 for easy collection. A discharge port is provided at the bottom of the lower molding box module 14, and the excess material powder in the lower molding box module 14 is sucked out by negative pressure suction. The powder collection 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.

[0079] 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 profile frame (7), wherein the profile frame (7) is composed of a plurality of profiles (5) overlapped together; The upper main body frame (2) and the powder spreading table plane (4), the powder spreading table plane (4) is installed on the top of the profile frame (7), and the upper main body frame (2) is installed on the powder spreading table plane (4); An upper powder supply module (1), the upper powder supply module (1) is installed on the top of the upper main frame (2); A secondary powder supply device (9), the secondary powder supply device (9) is installed on the profile frame (7); A first track (22), a second track (23) and a rack (26), wherein the first track (22), the second track (23) and the rack (26) are all installed on the powder spreading table plane (4), the first track (22), the second track (23) and the rack (26) are all arranged on the rear side of the upper main frame (2), and the first track (22), the second track (23) and the rack (26) are all parallel to each other; A slider seat and a second stepping motor (29), wherein the slider seat is slidably mounted on the first track (22) and the second track (23), and the second stepping motor (29) is mounted on the slider seat; A left limiter (21) and a right limiter (31), both of which are installed on the powder spreading table plane (4), and the left limiter (21) and the right limiter (31) are respectively arranged at the left and right ends of the second track (23); A gear (28), the gear (28) being mounted on the output end of the second stepping motor (29), the gear (28) being meshed with the rack (26); An upper molding box module (8), a first slide rail roller (16) and a second slide rail roller (19), the front and rear sides of the upper molding box module (8) are respectively provided with the second slide rail roller (19) and the first slide rail roller (16), the middle part of the profile frame (7) is provided with a second slide rail groove (20) and a first slide rail groove (17), the second slide rail roller (19) is slidably mounted on the second slide rail groove (20), and the first slide rail roller (16) is slidably mounted on the first slide rail groove (17); A powder spreading trolley (11), wherein the powder spreading trolley (11) is mounted on a slider seat; A solid-state laser (27), a beam expander (32) and a galvanometer (33), wherein the solid-state laser (27), the beam expander (32) and the galvanometer (33) are sequentially mounted on the top of the upper main frame (2); A lower molding box module (14), the lower molding box module (14) is mounted on the profile frame (7); The servo electric push rod (15) comprises: an electric push rod (1501) and an electric push rod cylinder (1502), wherein the electric push rod (1501) is installed in the electric push rod cylinder (1502), the electric push rod (1501) is connected to the powder spreading processing platform (801) of the upper molding box module (8), and the electric push rod cylinder (1502) is connected to the bottom of the lower molding box module (14); The first pneumatic push rod (13) comprises: a pneumatic push rod cylinder rod (1301) and a pneumatic push rod cylinder body (1302); the pneumatic push rod cylinder rod (1301) is connected to the upper molding box module (8), and the pneumatic push rod cylinder body (1302) is installed on the profile frame (7).

2. The laser sintering 3D printing device for continuous processing according to claim 1, characterized in that: The upper powder supply module (1) comprises: an upper powder supply module upper box (103), a sealing plate (104), an upper powder supply module lower box (105), a first powder blocking block (106), a second powder blocking block (107), a sealing side plate (108) and a powder supply roller (109); the upper powder supply module upper box (103) and the upper powder supply module lower box (105) are connected; the upper powder supply module lower box (105) is installed on the top of the upper main frame (2); the sealing plate (104) is located in the upper powder supply module upper box (103); the sealing plate (104) is used to separate The upper powder supply module upper box (103) and the upper powder supply module lower box (105) are provided with a powder feeding port (101) and an air suction port (102) on the upper powder supply module upper box (103), a sealing side plate (108) is installed on the bottom inner wall of the lower box (105) of the upper powder supply module, and a powder supply roller (109), a first powder blocking block (106) and a second powder blocking block (107) are installed at the bottom of the lower box (105) of the upper powder supply module, and the first powder blocking block (106) and the second powder blocking block (107) are respectively arranged on the left and right sides of the powder supply roller (109).

3. The laser sintering 3D printing device for continuous processing according to claim 2, characterized in that: The powder spreading trolley (11) comprises: a powder spreading trolley main frame (1101), a powder spreading roller (1102) and rollers (1103), wherein the powder spreading roller (1102) is installed in the powder spreading trolley main frame (1101), and two rollers (1103) are respectively installed on the left and right sides of the bottom of the powder spreading trolley main frame (1101), and the powder spreading trolley main frame (1101) is installed on a slider seat.

4. The laser sintering 3D printing device for continuous processing according to claim 3, characterized in that: Also includes: A third stepper motor (30), wherein the third stepper motor (30) is mounted on the second stepper motor (29), and the third stepper motor (30) is used to drive the powder spreading roller (1102) to rotate.

5. The laser sintering 3D printing device for continuous processing according to claim 4, characterized in that: The secondary powder supply device (9) comprises: a swing block body (901), a side sealing plate (902), a swing block impact cam head (903), a slider (904), a powder supply plate (905), a powder supply plate connecting frame (906), a spring position mounting shaft (907), a swing block mounting shaft (908), a first shaft (909), a spring (910), a connecting rod (911) and a second shaft (912). The swing block body (901) is mounted on the profile frame (7) via the swing block mounting shaft (908). The swing block impact cam heads (903) are mounted on both ends of the swing block body (901). The powder supply plate (905) is mounted on one end of the powder supply plate connecting frame (906). end, a slider (904) is mounted on the other end of a powder supply plate connecting frame (906), a second shaft (912) is mounted on the powder supply plate connecting frame (906), an end of the second shaft (912) is connected to one end of a connecting rod (911), a first shaft (909) is mounted on a swing block impact cam head (903), an end of the first shaft (909) is connected to the other end of the connecting rod (911), a spring position mounting shaft (907) is mounted on a profile frame (7), one end of a spring (910) is connected to the spring position mounting shaft (907), the other end of the spring (910) is connected to a swing block body (901), and a side sealing plate (902) is mounted on the profile frame (7).

6. The laser sintering 3D printing device for continuous processing according to claim 5, characterized in that: Also includes: A cylindrical slide rail (18) is installed on the profile frame (7), and a slider (904) is slidably installed on the cylindrical slide rail (18).

7. The laser sintering 3D printing device for continuous processing according to claim 6, characterized in that: Also includes: A first stepper motor (24) and a stepper motor mounting frame (25), wherein the stepper motor mounting frame (25) is mounted on the upper main frame (2), the first stepper motor (24) is mounted on the stepper motor mounting frame (25), and the first stepper motor (24) drives the powder supply roller (109) to rotate.

8. The laser sintering 3D printing device for continuous processing according to claim 7, characterized in that: Also includes: A powder cleaning felt (10) is installed on the lower side of the upper molding box module (8).

9. The laser sintering 3D printing device for continuous processing according to claim 8, characterized in that: Also includes: A dust isolation belt (3), a left waste powder box (6) and a right waste powder box (12); the dust isolation belt (3) is installed on the rear side of the upper main frame (2) and is in close contact with the powder spreading trolley (11); the left waste powder box (6) and the right waste powder box (12) are both installed on the profile frame (7) and are located at the left and right ends of the dust isolation belt (3); and a waste powder box discharge port (601) is provided on the left waste powder box (6).

10. The laser sintering 3D printing device for continuous processing according to claim 9, characterized in that: Also includes: A second pneumatic push rod (34), a third pneumatic push rod (35) and a sealing plate mounting frame (36), wherein the second pneumatic push rod (34) and the third pneumatic push rod (35) are both mounted on the top of the upper main frame (2), and the second pneumatic push rod (34) and the third pneumatic push rod (35) are respectively arranged on the front and rear sides of the upper box body (103) of the upper powder supply module, one end of the sealing plate mounting frame (36) is connected to the cylinder rod end of the second pneumatic push rod (34), and the other end of the sealing plate mounting frame (36) is connected to the cylinder rod end of the third pneumatic push rod (35), and the sealing plate (104) is mounted on the sealing plate mounting frame (36).

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