Wind field system for 3D printing and additive manufacturing equipment

Abstract

The invention relates to the technical field of 3D printing, in particular to a wind field system for 3D printing and additive manufacturing device.The wind field system comprises a forming cabin, a blowing module, an air suction module and a flow guide module which are arranged on the side, close to a printing platform, of the blowing module and the side, close to the printing platform, of the air suction module at the same time; the flow guide module is provided with a plurality of flow guide plates, and the flow guide plates are sequentially arranged at intervals in the direction perpendicular to the air flow; flow guide parts are arranged on the two sides of each flow guide plate, and the two closest flow guide parts on every two adjacent flow guide plates are switched between the state of being close to each other and the state of being far away from each other. According to the technical scheme, the wind power of the blowing module is gradually weakened from top to bottom, remaining splashing residues and smoke dust can be taken away, and the processing capacity of a wind field is improved. And the state of the flow guide part is switched, so that the airflow is more uniform, residues, smoke dust and metal powder can be treated and collected well, and waste of materials is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a 3D printing wind field system and an additive manufacturing device. Background Art

[0002] 3D printing performs layer-by-layer printing by laser sintering metal powder. At the same time, fine spatter residues and smoke and dust are generated during the printing process. If these residues are not processed, they will fall on the printing surface, resulting in a poor printing effect. Moreover, the fine residues float upwards and will stick to the laser protection glass, causing the protection glass to be damaged. In addition, if the spattered residues and smoke and dust are not blown out of the forming chamber in time, after the residues and smoke and dust fall on the normally printed metal powder, the production quality of the processed formed parts will be seriously affected. Currently, a wind field is usually used to process the residues and smoke and dust.

[0003] However, the current design of the 3D printing wind field is not ideal. Since the metal powder used for printing is also in the form of fine powder, the wind field either cannot completely blow away the residues and smoke and dust, or blows away the normally printed metal powder, resulting in poor processing ability of the 3D printing wind field.

[0004] In addition, after 3D printing is completed, a large amount of metal powder will remain in the forming chamber. The current wind field is difficult to collect the metal powder, resulting in waste of materials. Summary of the Invention

[0005] In view of this, the present invention provides a 3D printing wind field system and an additive manufacturing device to solve the problems of poor processing ability of the 3D printing wind field and waste of materials.

[0006] In a first aspect, the present invention provides a 3D printing wind field system, which includes:

[0007] A forming chamber with a printing platform arranged at the bottom;

[0008] A blowing module arranged on one side wall of the forming chamber; along the vertical direction, a plurality of blowing modules are arranged; and from top to bottom, the wind force of the blowing modules gradually weakens;

[0009] A suction module arranged on the other side wall of the forming chamber; the suction module is arranged opposite to the blowing module, and both the suction module and the blowing module are located above the printing platform;

[0010] A flow guiding module is simultaneously arranged on the side of the blowing module close to the printing platform and the side of the suction module close to the printing platform; the flow guiding module is provided with a plurality of flow guiding plates, and along the direction perpendicular to the wind flow, the plurality of flow guiding plates are arranged in sequence and at intervals;

[0011] The two sides of the deflector are provided with deflector parts, and the two closest deflector parts on adjacent deflectors switch states between approaching each other and moving away from each other.

[0012] Beneficial effects: Since both the blowing module and the suction module are located above the printing platform, when dealing with splashed residues and smoke and dust, when the wind force is controlled within the normal threshold, it will not affect the metal powder being normally printed on the printing platform. In addition, the suction module and the blowing module are arranged opposite to each other, which will not cause turbulent flow problems and can better carry away splashed residues and smoke and dust. At the same time, usually in actual work, smoke and dust and splashed residues will splash or float upward away from the printing platform. Therefore, from top to bottom, the wind force of the blowing module gradually weakens. The wind force intensity at the top is relatively large, which can better carry away splashed residues and smoke and dust. The wind force intensity at the bottom is relatively low, which can carry away the remaining splashed residues and smoke and dust, and at the same time will not blow away the normally working metal powder, thereby improving the processing ability of the wind field.

[0013] Furthermore, by switching the state of the deflector part in this technical solution, the airflow of blowing and suction becomes more uniform, avoiding the inability to carry away residues and smoke and dust in the edge area of the forming chamber. Furthermore, the suction module can process and collect residues, smoke and dust, and the remaining metal powder well, avoiding waste of materials.

[0014] In an optional implementation manner, along the arrangement direction of the deflectors, the first interval between adjacent deflectors increases from the middle position to the edge position.

[0015] Beneficial effects: Since the initial wind force blown out through the air outlet is relatively larger in the area closer to the center of the air outlet, and relatively smaller in the area farther from the center of the air outlet. Through the special design of the deflector, the wind force intensity of the blowing wind in each area entering the forming chamber is relatively uniform, avoiding the inability to carry away residues and smoke and dust in the edge area of the forming chamber. Furthermore, the suction module can process and collect residues, smoke and dust, and the remaining metal powder well, avoiding waste of materials.

[0016] In an optional implementation manner, when the state is switched, along the direction of the air flow, the second interval between adjacent deflector parts increases from the middle position to the edge position.

[0017] Beneficial effects: In this embodiment, by adjusting the structural form of the flow guiding part during state switching, the air flow in the blowing module and the suction module can flow orderly. Moreover, the second interval between two adjacent flow guiding parts increases from the middle position to the edge position, which can stably adjust the internal air flow velocity, so as to better control the air flow direction and make the air flow more uniform. And during the switching, due to the progressive transformation, the air flow blown into the forming chamber can be better adjusted, making the blown air flow more flexible and controllable to meet the requirements of handling splashing residues and soot under different conditions.

[0018] In an alternative embodiment, the flow guiding part has a quadrilateral structure, and the quadrilateral structure is provided with a median line. When two flow guiding parts approach each other, the flow guiding parts gradually overlap along the median line; when two flow guiding parts move away from each other, the flow guiding parts gradually unfold along the median line.

[0019] In an alternative embodiment, the quadrilateral structure is a rhombus structure.

[0020] Beneficial effects: In this embodiment, the flow guiding part has a rhombus structure. The rhombus structure can ensure that when the state of the flow guiding part is switched, compared with other structural shapes, the direction of the air flow blown out by the blowing module always remains unchanged, better controlling the air flow direction and making the air flow more uniform.

[0021] In an alternative embodiment, a chute is provided on the flow guiding plate, and the chute is arranged along the air flow direction; driving members adapted to slide on the chute are provided at both ends of the flow guiding part, and the state of the flow guiding part is switched through the self-movement of the driving members.

[0022] In an alternative embodiment, the blowing module further includes:

[0023] A blowing cavity, which is provided with a blowing port and a first connection port; the blowing port is connected to a blowing pump, and the first connection port is communicated with the forming chamber; the flow guiding module in the blowing cavity is arranged on the side of the blowing cavity close to the first connection port;

[0024] The width of the blowing port is smaller than the width of the first connection port, and along the air flow direction, the width of the blowing cavity increases.

[0025] Beneficial effects: In this embodiment, the width of the blowing port is smaller than the width of the first connection port, and along the air flow direction, the width of the blowing cavity increases, which can make the blowing wind force intensity in each area entering the forming chamber relatively uniform, avoiding the inability to carry away the residues and soot in the edge area of the forming chamber. Furthermore, the suction module can handle and collect the residues, soot and remaining metal powder well, avoiding material waste.

[0026] In an alternative embodiment, the air suction module further includes:

[0027] An air suction chamber provided with an air suction port and a second connection port; the air suction port is communicated with the collector, and the second connection port is communicated with the forming chamber; the flow guiding module in the air suction chamber is arranged on one side of the air suction chamber close to the second connection port;

[0028] The width of the air suction port is smaller than the width of the second connection port, and along the air flow direction, the width of the air suction chamber decreases.

[0029] In an alternative embodiment, the air suction module further includes:

[0030] A connecting nozzle, one end of the connecting nozzle is connected to the air suction port, and the other end of the connecting nozzle is communicated with the collector;

[0031] Along the air flow direction, the width of the connecting nozzle decreases.

[0032] Advantageous effects: In this embodiment, along the air flow direction, the width of the connecting nozzle decreases, so as to better collect splashed residues, soot and unused metal powder and collect them in a smaller container.

[0033] In a second aspect, the present invention further provides an additive manufacturing device, which includes: the 3D printing wind field system according to any one of the above embodiments, and a powder spreading system, a lifting chamber system and an air circuit circulation system that are communicated with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related technical solutions. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a schematic diagram of the overall structure of a 3D printing wind field system in an embodiment of the present invention;

[0036] Figure 2 It is a schematic diagram of the internal air flow direction of a 3D printing wind field system in an embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of the blowing module close to the flow guiding part in an embodiment of the present invention;

[0038] Figure 4 It is a schematic diagram of the blowing module away from the flow guiding part in an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the blowing module in the embodiment of the present invention when the diversion part is fully retracted;

[0040] Figure 6 This is a schematic diagram of the suction module in the embodiment of the present invention when the diversion part is close;

[0041] Figure 7 This is a schematic diagram of the suction module in the embodiment of the present invention when the diversion part is far away;

[0042] Figure 8 This is a schematic diagram of the suction module in the embodiment of the present invention when the diversion part is fully retracted.

[0043] Description of the reference numerals:

[0044] 11. Molding chamber; 111. Printing platform;

[0045] 12. Blowing module; 121. Blowing port; 122. Blowing cavity; 123. First connection port;

[0046] 13. Suction module; 131. Connecting nozzle; 132. Suction cavity; 133. Second connection port;

[0047] 14. Laser galvanometer;

[0048] 15. Diversion module; 151. Diversion plate; 152. Diversion part; 153. Flow channel. Detailed implementation manners

[0049] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can also be the communication inside two components. It can be a wireless connection or a wired connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0053] 3D printing performs layer-by-layer printing by laser sintering metal powder. At the same time, fine splash residues and smoke and dust will be generated during the printing process. If these residues are not processed, they will fall on the printing surface, resulting in a poor printing effect. Moreover, the fine residues will float upwards and stick to the laser protection glass, causing the protection glass to be damaged. In addition, if the splash residues and smoke and dust are not blown out of the forming chamber in time, after the residues and smoke and dust fall on the normally printed metal powder, the production quality of the processed formed parts will be seriously affected. Currently, a wind field is usually used to process the residues and smoke and dust.

[0054] However, the current design of the 3D printing wind field is not ideal. Since the metal powder used for printing is also in the form of fine powder, the wind field either cannot completely blow away the residues and smoke and dust, or blows away the normally printed metal powder, resulting in a poor processing ability of the 3D printing wind field. In addition, after 3D printing is completed, a large amount of metal powder will remain in the forming chamber. The current wind field is difficult to collect the metal powder, resulting in waste of materials.

[0055] In view of this, the present invention provides a wind field system for 3D printing and an additive manufacturing device to solve the problems of poor processing ability of the 3D printing wind field and waste of materials.

[0056] The following combines Figures 1 to 8 , to describe the embodiments of the present invention.

[0057] According to an embodiment of the present invention, on the one hand, a wind field system for 3D printing is provided. The wind field system includes a forming chamber 11, a blowing module 12, a suction module 13, and a flow guiding module 15.

[0058] Specifically, in the embodiment of the present invention, a printing platform 111 is provided at the bottom of the forming chamber 11, and a laser galvanometer 14 is also provided at a position corresponding to the printing platform 111 on the forming chamber 11. The blowing module 12 is arranged on one side wall of the forming chamber 11, and in the vertical direction, a plurality of blowing modules 12 are provided. The suction module 13 is arranged on the other side wall of the forming chamber 11, and the suction module 13 is arranged opposite to the blowing module 12.

[0059] Further, in the embodiment of the present invention, there are at least 2 blowing modules 12 and at least 1 suction module 13.

[0060] In an alternative solution, there may also be more than 2 blowing modules 12.

[0061] In an alternative solution, there may also be more than 2 suction modules 13, and all the suction modules 13 are arranged opposite to the blowing modules 12.

[0062] Further, in the embodiment of the present invention, both the blowing module 12 and the suction module 13 are located above the printing platform 111. The blowing module 12 is located on the first side of the printing platform 111, and the suction module 13 is located on the second side of the printing platform 111, that is, on the other side opposite to the blowing module 12.

[0063] Further, in the embodiment of the present invention, from top to bottom, the wind force of the blowing module 12 gradually weakens. That is to say, the blowing module 12 located farther away from the printing platform 111 has a higher wind force intensity during operation, and the blowing module 12 located closer to the printing platform 111 has a relatively lower wind force intensity during operation. Specifically, the blowing module 12 located farther away from the printing platform 111 has a stronger wind force intensity during operation than the blowing module 12 located closer to the printing platform 111.

[0064] Further, in the embodiment of the present invention, the flow guiding module 15 is simultaneously arranged on the side of the blowing module 12 close to the printing platform 111 and on the side of the suction module 13 close to the printing platform 111. That is to say, the flow guiding module 15 is arranged in both the blowing module 12 and the suction module 13.

[0065] Specifically, the flow guiding module 15 is provided with a plurality of flow guiding plates 151. Along the direction perpendicular to the air flow, the plurality of flow guiding plates 151 are arranged in sequence and at intervals. Flow guiding portions 152 are provided on both sides of the flow guiding plate 151, and the two closest flow guiding portions 152 on adjacent two flow guiding plates 151 switch states between approaching each other and moving away from each other. That is to say, adjacent two flow guiding plates 151 enclose a flow channel 153, and the two flow guiding portions 152 are exactly located on the side walls of the flow channel 153. Therefore, the state switching of the flow guiding portions 152 can adjust the air flow passing through the flow channel 153.

[0066] During actual operation, after the formed part is printed, the remaining metal powder needs to be collected and the diversion parts 152 approach each other. At this time, the blowing module 12 can release a greater wind force into the forming chamber 11 to meet the requirement of blowing out the metal powder.

[0067] For the switching mode of the diversion parts 152, it can be adjusted manually or a driving device can be set to adjust it automatically. Of course, this embodiment is only an example of the switching mode of the diversion parts 152, but it is not limited thereto, and those skilled in the art can change it according to the actual situation.

[0068] With such a setting, since both the blowing module 12 and the suction module 13 are located above the printing platform 111, when dealing with splashed residues and soot, when the wind force is controlled within the normal threshold, it will not affect the metal powder being normally printed on the printing platform 111. In addition, the suction module 13 and the blowing module 12 are arranged oppositely, which will not cause a turbulence problem and can better carry away the splashed residues and soot. At the same time, usually during actual operation, the soot and splashed residues will splash or float upward away from the printing platform 111. Therefore, from top to bottom, the wind force of the blowing module 12 gradually weakens. The wind force at the top is relatively large, which can better carry away the splashed residues and soot, and the wind force at the bottom is relatively low, which can carry away the remaining splashed residues and soot without blowing away the metal powder in normal operation, thus improving the processing ability of the wind field.

[0069] Furthermore, in this technical solution, by switching the state of the diversion parts 152, the airflows of blowing and suction become more uniform, avoiding the inability to carry away the residues and soot in the edge area of the forming chamber 11. Furthermore, the suction module 13 can process and collect all the residues, soot and remaining metal powder, avoiding waste of materials.

[0070] Furthermore, in an optional implementation manner, along the arrangement direction of the diversion plates 151, the first interval between two adjacent diversion plates 151 increases from the middle position to the edge position. That is to say, each flow channel 153 has a width. The flow channel 153 at the middle position is narrower, and the flow channel 153 at the edge position is wider, making the flow channels 153 in the area closer to the blowing center denser, while the flow channels 153 in the area farther from the blowing center are looser.

[0071] With such a setting, since the initial wind force blown out through the air outlet 121 is relatively greater in the area usually closer to the center of the air outlet 121, and relatively smaller in the area farther from the center of the air outlet 121. Through the special design of the guide plate 151, the wind force intensity of the air blown into each area of the forming chamber 11 is relatively uniform, avoiding the inability to carry away the residues and soot in the edge area of the forming chamber 11. Furthermore, the suction module 13 can handle and collect the residues, soot and remaining metal powder well, avoiding waste of materials.

[0072] Further, in an optional implementation manner, when the state is switched, along the direction of the air flow, the second interval between two adjacent guide portions 152 increases from the middle position to the edge position. As Figure 3 shown, when the state of the guide portion 152 is switched, the middle part of the guide portion 152 protrudes from the side wall of the flow channel 153 towards the middle area of the flow channel 153, making the distance between two guide portions 152 smaller and resulting in a narrower width of the flow channel 153. And towards both ends of the flow channel 153, the distance between two guide portions 152 gradually increases, making the width of the flow channel 153 also gradually become wider.

[0073] Taking the blowing module 12 as an example, when approaching each other, as Figure 3 shown, all the guide portions 152 act simultaneously and with the same amplitude. Therefore, in the area closer to the center of the air outlet 121, the width d1 of the flow channel 153 is narrower, and in the area farther from the center of the air outlet 121, the width d2 of the flow channel 153 is wider. Similarly, when moving away from each other, as Figure 4 shown, it is still the case that in the area closer to the center of the air outlet 121, the width d5 of the flow channel 153 is narrower, and in the area farther from the center of the air outlet 121, the width d6 of the flow channel 153 is wider.

[0074] Taking the suction module 13 as an example, when approaching each other, as Figure 6 shown, all the guide portions 152 act simultaneously and with the same amplitude. Therefore, in the area closer to the center of the suction port, the width d3 of the flow channel 153 is narrower, and in the area farther from the center of the suction port, the width d4 of the flow channel 153 is wider. Similarly, when moving away from each other, as Figure 7 shown, it is still the case that in the area closer to the center of the suction port, the width d7 of the flow channel 153 is narrower, and in the area farther from the center of the suction port, the width d8 of the flow channel 153 is wider.

[0075] With such a setting, in this embodiment, by adjusting the structural form of the flow guiding part 152 during state switching, the air flow in the blowing module 12 and the air suction module 13 can flow orderly. Moreover, the second interval between two adjacent flow guiding parts 152 increases from the middle position to the edge position, which can stably adjust the flow velocity of the internal air flow, so as to better control the air flow direction and make the air flow more uniform. And during the switching, due to the progressive transformation, the air flow blown into the forming chamber 11 can be better adjusted, making the blown air flow more flexible and controllable to meet the requirements of dealing with splashed residues and soot in different situations.

[0076] Further, in an optional implementation manner, the flow guiding part 152 has a quadrilateral structure, and the quadrilateral structure is provided with a median line. For example, it can be a parallelogram structure, a rectangle structure, or a rhombus structure, that is, a quadrilateral with two pairs of opposite sides being equal respectively. In this way, the flow guiding part 152 can be stretched along the median line to a state where two sides overlap. When two flow guiding parts 152 approach each other, the flow guiding part 152 gradually overlaps along the median line. When two flow guiding parts 152 move away from each other, the flow guiding part 152 gradually unfolds along the median line. That is to say, when the flow guiding part 152 gradually overlaps along the median line, the two flow guiding parts 152 in the flow channel 153 approach each other, making the width of the flow channel 153 narrower. When the flow guiding part 152 gradually unfolds along the median line, the two flow guiding parts 152 in the flow channel 153 move away from each other, making the width of the flow channel 153 wider. This can better adjust the air flow blown into the forming chamber 11, making the blown air flow more flexible and controllable to meet the requirements of dealing with splashed residues and soot in different situations.

[0077] Further, in an optional implementation manner, the quadrilateral structure is a rhombus structure.

[0078] With such a setting, in this embodiment, the flow guiding part 152 has a rhombus structure. The rhombus structure can ensure that when the state of the flow guiding part 152 is switched, compared with other structural shapes, the direction of the air flow blown out by the blowing module 12 remains unchanged all the time, better controlling the air flow direction and making the air flow more uniform. On the contrary, for the flow guiding parts 152 with a parallelogram structure or a rectangle structure, when the flow guiding part 152 is stretched, the direction of the air flow blown out by the blowing module 12 will change, making it difficult to control the air flow direction and the air flow uneven.

[0079] Further, in an optional embodiment, a chute is provided on the deflector 151, and the chute is arranged along the air flow direction. Driving members adapted to slide on the chute are provided at both ends of the deflector portion 152, and the deflector portion 152 switches its state through the self-movement of the driving members. The driving members can be telescopic motors and sliders connected to the driving ends of the telescopic motors. Sliders are connected to both ends of the deflector portion 152, and the sliders are adapted to move on the chute. The telescopic motors are fixed in the cavities of the blowing module 12 and the air suction module 13. In this way, the telescopic motors can drive the sliders to slide in the chute, and the sliders drive the deflector portion 152 to switch its state at the same time. Of course, this embodiment only gives an example of the type of the driving members, but does not limit this. Those skilled in the art can make changes according to the actual situation.

[0080] Further, in an optional embodiment, the blowing module 12 further includes a blowing cavity 122. The blowing cavity 122 is provided with a blowing port 121 and a first connection port 123. The blowing port 121 is connected to a blowing pump, and the first connection port 123 communicates with the forming chamber 11. The deflector module 15 in the blowing cavity 122 is arranged on one side of the blowing cavity 122 close to the first connection port 123. The width of the blowing port 121 is smaller than the width of the first connection port 123, and along the air flow direction, the width of the blowing cavity 122 increases.

[0081] With such a setting, in this embodiment, the width of the blowing port 121 is smaller than the width of the first connection port 123, and along the air flow direction, the width of the blowing cavity 122 increases, which can make the blowing wind force intensity in each area entering the forming chamber 11 relatively uniform, avoid being unable to carry away the residues and soot in the edge area of the forming chamber 11, and further enable the air suction module 13 to handle and collect the residues, soot and remaining metal powder well, avoiding waste of materials.

[0082] Further, in an optional embodiment, the air suction module 13 further includes an air suction cavity 132. The air suction cavity 132 is provided with an air suction port and a second connection port 133. The air suction port is connected to a collector, and the second connection port 133 communicates with the forming chamber 11; the deflector module 15 in the air suction cavity 132 is arranged on one side of the air suction cavity 132 close to the second connection port 133. The width of the air suction port is smaller than the width of the second connection port 133, and along the air flow direction, the width of the air suction cavity 132 decreases.

[0083] Further, in an optional embodiment, the air suction module 13 further includes a connecting nozzle 131. One end of the connecting nozzle 131 is connected to the air suction port, and the other end of the connecting nozzle 131 is connected to the collector. Along the air flow direction, the width of the connecting nozzle 131 decreases.

[0084] With such a setting, in this embodiment, along the air flow direction, the width of the connecting nozzle 131 decreases, so as to better collect the splashed residues, soot and unused metal powder and collect them in a smaller container.

[0085] In a second aspect, the present invention also provides an additive manufacturing device, which includes: the 3D printing air flow field system according to any one of the above embodiments, and a powder spreading system, a lifting bin system and an air path circulation system that are interconnected.

[0086] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A 3D printed wind field system, characterized in that, Comprising: A forming chamber (11) with a printing platform (111) provided at the bottom; A blowing module (12) provided on one side wall of the forming chamber (11); in the vertical direction, a plurality of the blowing modules (12) are provided; and from top to bottom, the wind force of the blowing modules (12) gradually weakens; A suction module (13) provided on the other side wall of the forming chamber (11); the suction module (13) is arranged opposite to the blowing module (12), and both the suction module (13) and the blowing module (12) are located above the printing platform (111); A flow guiding module (15) provided on the side of the blowing module (12) close to the printing platform (111) and on the side of the suction module (13) close to the printing platform (111); the flow guiding module (15) is provided with a plurality of flow guiding plates (151), and in the direction perpendicular to the wind flow, the plurality of flow guiding plates (151) are arranged in sequence and spaced apart; Flow guiding portions (152) are provided on both sides of the flow guiding plate (151), and the two closest flow guiding portions (152) on adjacent two flow guiding plates (151) switch states between approaching each other and moving away from each other.

2. The wind farm system according to claim 1, wherein In the arrangement direction of the flow guiding plates (151), the first interval between adjacent two flow guiding plates (151) increases from the middle position to the edge position.

3. The wind farm system according to claim 1 or 2, characterized in that, During state switching, in the wind flow direction, the second interval between adjacent two flow guiding portions (152) increases from the middle position to the edge position.

4. The wind farm system according to claim 3, wherein, The flow guiding portion (152) has a quadrilateral structure, and the quadrilateral structure is provided with a median line. When the two flow guiding portions (152) approach each other, the flow guiding portions (152) gradually overlap along the median line; when the two flow guiding portions (152) move away from each other, the flow guiding portions (152) gradually unfold along the median line.

5. The wind farm system according to claim 4, wherein The quadrilateral structure is a rhombus structure.

6. The wind farm system according to claim 4 or 5, characterized in that A sliding groove is provided on the flow guiding plate (151), and the sliding groove is arranged in the wind flow direction; driving members adapted to slide on the sliding groove are provided at both ends of the flow guiding portion (152), and the flow guiding portion (152) switches states through the self - movement of the driving members.

7. The wind farm system according to claim 4 or 5, characterized in that, The blowing module (12) further comprises: A blowing cavity (122) provided with a blowing port (121) and a first connection port (123); the blowing port (121) is connected to a blowing pump, and the first connection port (123) communicates with the forming chamber (11); the flow guiding module (15) in the blowing cavity (122) is provided on the side of the blowing cavity (122) close to the first connection port (123); The width of the blowing port (121) is smaller than the width of the first connection port (123), and in the wind flow direction, the width of the blowing cavity (122) increases.

8. The wind farm system according to claim 4 or 5, characterized in that, The suction module (13) further comprises: The air suction chamber (132) is provided with an air suction port and a second connection port (133); the air suction port is communicated with the collector, and the second connection port (133) is communicated with the forming chamber (11); the flow guiding module (15) in the air suction chamber (132) is arranged on one side of the air suction chamber (132) close to the second connection port (133); The width of the air suction port is smaller than the width of the second connection port (133), and along the air flow direction, the width of the air suction chamber (132) decreases.

9. The wind farm system according to claim 8, characterized in that, The air suction module (13) further includes: A connecting nozzle (131), one end of the connecting nozzle (131) is connected to the air suction port, and the other end of the connecting nozzle (131) is communicated with the collector; Along the air flow direction, the width of the connecting nozzle (131) decreases.

10. An additive manufacturing device, characterized in that, Comprising: The 3D printing wind field system according to any one of claims 1 to 9, and a powder spreading system, a lifting bin system and an air circuit circulation system that are communicated with each other.

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