Cleaning equipment for additive manufacturing

Abstract

The utility model discloses cleaning equipment for additive manufacturing, and relates to the technical field of additive manufacturing. The device comprises a printing box, and a mounting rod is arranged on the lower side in the printing box in the left-right direction; a power mechanism for driving the mounting rod to move back and forth is mounted on the printing box; a powder cleaning mechanism and a sliding control mechanism are arranged on the mounting rod; the power mechanism comprises transmission motors fixed to the left side and the right side of the rear end of the printing box correspondingly. The output end of the transmission motor is horizontally forward and coaxially fixed with a transmission lead screw; the transmission lead screw penetrates through the rear wall of the printing box and extends into the printing box. Bases are respectively fixed at the front ends of the left and right side walls in the printing box; the front ends of the transmission lead screws are rotationally connected with the bases in a one-to-one The left and right sides of the mounting rod are in threaded connection with the transmission lead screws. The metal powder cleaning device has the advantages that residual metal powder can be effectively cleaned in a blowing and suction combined mode, and the cleaning effect is more comprehensive and thorough.

Description

Technical Field

[0001] The utility model relates to the technical field of additive manufacturing, in particular to a cleaning device for additive manufacturing. Background Art

[0002] Additive manufacturing technology, also known as 3D printing technology, is an emerging manufacturing technology that uses digital models as the basis and stacks materials layer by layer to create physical objects. It embodies the close integration of information network technology with advanced material technology and digital manufacturing technology, and is an important part of the advanced manufacturing industry.

[0003] During additive manufacturing, metal powder will remain at the bottom of the printing box. Long-term accumulation will affect the manufacturing of subsequent products, so the metal powder needs to be cleaned in time. However, the current cleaning device easily leads to many cleaning dead corners at the bottom of the printing box, and the cleaning of the metal powder is not thorough and comprehensive. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a cleaning device for additive manufacturing in view of the above-mentioned technical deficiencies, which can effectively clean the residual metal powder by combining blowing and suction, and the cleaning effect is more comprehensive and thorough.

[0005] The technical solution adopted by the utility model is: to provide a cleaning device for additive manufacturing, including a printing box, a mounting rod is arranged on the lower side of the printing box along the left and right directions; a power mechanism for driving the mounting rod to move forward and backward is installed on the printing box; a powder cleaning mechanism and a sliding control mechanism are arranged on the mounting rod;

[0006] The power mechanism comprises a transmission motor respectively fixed on the left and right sides of the rear end of the printing box; the output end of the transmission motor is horizontally forward and coaxially fixed with a transmission screw; the transmission screw penetrates the rear wall of the printing box and extends into the interior of the printing box; the front ends of the left and right side walls of the interior of the printing box are respectively fixed with bases; the front end of the transmission screw is rotatably connected with the base in a one-to-one correspondence; the left and right sides of the mounting rod are respectively threadedly connected with the transmission screw;

[0007] The powder cleaning mechanism includes a through groove which runs vertically through the middle part of the mounting rod; a support rod is slidably connected in the through groove along the left and right directions; the lower end of the support rod extends from the lower end of the through groove; a suction shell and an exhaust shell are fixed to the lower ends of the support rod, one in front and one behind; the suction shell and the exhaust shell are both arranged along the left and right directions; a suction head is evenly connected to the lower side of the suction shell along the left and right directions; a blowing head is evenly connected to the lower side of the exhaust shell along the left and right directions; a suction pump and a blowing pump are respectively fixed to the outside of the printing box; a collecting box is placed outside the printing box; the suction port of the suction pump is connected to the suction shell through a suction pipe, and the discharge port of the suction pump is connected to the collecting box through a conduction pipe; the air outlet of the blowing pump is connected to the exhaust shell through a blowing pipe.

[0008] To further optimize the technical solution, a sliding control mechanism is provided on the mounting rod of the cleaning equipment for additive manufacturing; the sliding control mechanism includes a support fixed on the mounting rod; a control motor is fixed on the support; a cam is fixedly connected to the output end of the control motor; a guide wheel is rotatably connected to the support rod; the cam and the guide wheel cooperate with each other; a compression spring is connected in the through groove; the compression spring is configured with a preload force for causing the guide wheel to abut against the cam.

[0009] To further optimize the technical solution, the transmission screw of the cleaning equipment for additive manufacturing is a bidirectional screw structure with positive and negative teeth.

[0010] To further optimize the technical solution, the blowing head and the suction head of the cleaning equipment for additive manufacturing are distributed one by one.

[0011] The beneficial effects of the utility model are:

[0012] 1. Through the suction of the suction pump, the metal powder remaining at the bottom of the printing box can be sucked from the suction head and discharged into the collection box; the suction head is evenly connected and distributed on the lower side of the suction shell along the left and right directions, which can expand the suction range in the left and right directions in the printing box.

[0013] 2. The air pump can be used to blow air into the exhaust shell, and the air can be blown out through the air blowing head, so that the stubborn metal powder remaining at the bottom of the printing box can be separated from the printing box, making the suction effect more thorough; the air blowing head is evenly connected and distributed on the lower side of the exhaust shell along the left and right directions, which can expand the blowing range in the left and right directions inside the printing box.

[0014] 3. The suction shell and the exhaust shell are fixed at the lower end of the support rod, and the support rod slides left and right along the through groove, so that the suction shell and the exhaust shell can change their positions in the left and right directions, so that the blowing and suction effects are more comprehensive in the left and right directions and the cleaning dead corners are reduced.

[0015] 4. The transmission motor controls the rotation of the transmission screw, which can drive the mounting rod to move forward and backward, thereby achieving the blowing and suction effect on the metal powder at the bottom of the printing box in the front and back directions, ensuring the comprehensive cleaning of the entire range of the bottom of the printing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the utility model when the printing box is partially cut away;

[0018] Figure 3 This is a schematic diagram of the structure of the suction shell and the exhaust shell.

[0019] In the figure, 1. printing box; 2. mounting rod; 3. transmission motor; 4. transmission screw; 5. base; 6. through slot; 7. support rod; 8. suction shell; 9. exhaust shell; 10. suction head; 11. blowing head; 12. suction pump; 13. blowing pump; 14. collecting box; 15. suction pipe; 16. conduction pipe; 17. blowing pipe; 18. support; 19. control motor; 20. cam; 21. guide wheel; 22. compression spring. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1 As shown, the cleaning device for additive manufacturing includes a printing box 1, a mounting rod 2 is arranged on the lower side of the inside of the printing box 1 along the left and right directions; a power mechanism for driving the mounting rod 2 to move forward and backward is installed on the printing box 1; and a powder cleaning mechanism and a sliding control mechanism are arranged on the mounting rod 2;

[0022] like Figure 2 As shown, the power mechanism includes a transmission motor 3 fixed to the left and right sides of the rear end of the printing box 1 respectively; the output end of the transmission motor 3 is horizontally forward and coaxially fixed with a transmission screw 4; the transmission screw 4 penetrates the rear wall of the printing box 1 and extends into the interior of the printing box 1; the front ends of the left and right side walls of the interior of the printing box 1 are respectively fixed with bases 5; the front ends of the transmission screw 4 are rotatably connected with the base 5 in a one-to-one correspondence; the left and right sides of the mounting rod 2 are respectively threadedly connected with the transmission screw 4;

[0023] like Figure 1-3 As shown, the powder cleaning mechanism includes a through slot 6 which runs vertically through the middle of the mounting rod 2; a support rod 7 is slidably connected in the through slot 6 along the left-right direction; the lower end of the support rod 7 extends from the lower end of the through slot 6; a suction shell 8 and an exhaust shell 9 are fixed to the lower end of the support rod 7 in front and behind; the suction shell 8 and the exhaust shell 9 are both arranged along the left-right direction; a suction head 10 is evenly connected to the lower side of the suction shell 8 along the left-right direction; a blowing head 11 is evenly connected to the lower side of the exhaust shell 9 along the left-right direction; a suction pump 12 and a blowing pump 13 are respectively fixed to the outside of the printing box 1; a collecting box 14 is placed outside the printing box 1; the suction port of the suction pump 12 is connected to the suction shell 8 through the suction pipe 15, and the discharge port of the suction pump 12 is connected to the collecting box 14 through the conduction pipe 16; the air outlet of the blowing pump 13 is connected to the exhaust shell 9 through the blowing pipe 17.

[0024] During additive manufacturing, since metal powder is easy to remain in various places at the bottom of the printing box 1, traditional sweeping and cleaning by suction alone can easily leave some cleaning dead corners. Therefore, in the present technical solution, while cleaning by suction, for some positions where the suction effect is difficult to act, the residual metal powder in these positions can be blown away and displaced by blowing, and then these metal powders are sucked, which effectively reduces the problem of metal powder remaining in cleaning dead corners and greatly improves the thoroughness of cleaning.

[0025] Specifically, by starting the suction pump 12 and the blowing pump 13, with the help of the suction head 10 evenly distributed on the lower side of the suction shell 8 and the blowing head 11 evenly distributed on the lower side of the exhaust shell 9, the metal powder can be sucked and blown respectively, and the sucked metal powder will enter the collection box 14 outside the printing box 1 for collection.

[0026] When cleaning the metal powder, the transmission motor 3 controls the rotation of the transmission screw 4, driving the mounting rod 2 to move forward and backward in the printing box 1 (the two transmission motors 3 drive the two transmission screws 4 to operate synchronously), so that the front and rear range of the bottom of the printing box 1 can be blown and sucked; in addition, by appropriately moving the support rod 7 in the left and right directions in the through groove 6, the positions of the suction shell 8 and the exhaust shell 9 in the left and right directions can be changed, and the positions of each suction head 10 and the blowing head 11 in the left and right directions can be changed, thereby reducing the problem of dead angles in the left and right directions. By combining the above two methods, the comprehensiveness of cleaning the residual metal powder at the bottom of the printing box 1 can be improved.

[0027] Of course, the processes of suction and blowing during cleaning can be flexibly controlled. For example, suction and blowing can be performed alternately, or simultaneously, or only certain dead corners can be blown, etc. The specific situation can be controlled by the user.

[0028] like Figure 2-3 As shown, a sliding control mechanism is provided on the mounting rod 2; the sliding control mechanism comprises a support 18 fixed on the mounting rod 2; a control motor 19 is fixed on the support 18; a cam 20 is fixedly connected to the output end of the control motor 19; a guide wheel 21 is rotatably connected to the support rod 7; the cam 20 and the guide wheel 21 are correspondingly matched; a compression spring 22 is connected in the through groove 6; the compression spring 22 is configured with a preload force for making the guide wheel 21 abut against the cam 20.

[0029] By controlling the motor 19, the cam 20 can be driven to rotate, and the cam 20 pushes the guide wheel 21 (the rotation of the guide wheel 21 reduces the wear of the cam 20), thereby driving the support rod 7 to slide, thereby promoting the movement of the suction shell 8 and the exhaust shell 9 in the left and right directions. Combined with the elastic force of the compression spring 22, the suction shell 8 and the exhaust shell 9 can be reciprocated in the left and right directions, ensuring that the metal powder can be cleaned more thoroughly in the left and right directions.

[0030] like Figure 2 As shown, the transmission screw 4 is a bidirectional screw structure with positive and negative teeth, which enables the transmission motor 3 to rotate in only one direction to achieve reciprocating movement of the mounting rod 2 in the front-to-back direction, thereby improving the reliability of the process.

[0031] like Figure 3 As shown, the air blowing heads 11 and the suction heads 10 are spaced apart from each other. When the air blowing and the suction are performed simultaneously, the metal powder blown down by the air blowing head 11 can be sucked away by the adjacent suction heads 10, thereby ensuring more comprehensive suction.

[0032] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A cleaning device for additive manufacturing, comprising a printing box (1), characterized in that: A mounting rod (2) is arranged on the lower side of the printing box (1) along the left-right direction; a power mechanism for driving the mounting rod (2) to move forward and backward is installed on the printing box (1); a powder cleaning mechanism and a sliding control mechanism are arranged on the mounting rod (2); The power mechanism comprises a transmission motor (3) respectively fixed on the left and right sides of the rear end of the printing box (1); the output end of the transmission motor (3) is horizontally forward and coaxially fixed with a transmission screw (4); the transmission screw (4) penetrates the rear wall of the printing box (1) and extends into the interior of the printing box (1); the front ends of the left and right side walls inside the printing box (1) are respectively fixed with bases (5); the front ends of the transmission screw (4) are rotatably connected to the bases (5) in a one-to-one correspondence; the left and right sides of the mounting rod (2) are respectively threadedly connected to the transmission screw (4); The powder cleaning mechanism comprises a through slot (6) vertically penetrating and arranged in the middle of the mounting rod (2); a support rod (7) is slidably connected in the through slot (6) along the left-right direction; the lower end of the support rod (7) extends out from the lower end of the through slot (6); a suction shell (8) and an exhaust shell (9) are fixed to the lower end of the support rod (7) one in front of the other; the suction shell (8) and the exhaust shell (9) are both arranged along the left-right direction; a suction head (10) is evenly connected to the lower side of the suction shell (8) along the left-right direction; the exhaust shell (9) The lower side is evenly connected with a blow head (11) along the left and right directions; a suction pump (12) and a blow pump (13) are respectively fixed outside the printing box (1); a collection box (14) is placed outside the printing box (1); the suction port of the suction pump (12) is connected to the suction shell (8) through a suction pipe (15), and the discharge port of the suction pump (12) is connected to the collection box (14) through a conduction pipe (16); the air outlet of the blow pump (13) is connected to the exhaust shell (9) through a blow pipe (17).

2. The cleaning device for additive manufacturing according to claim 1, characterized in that: A sliding control mechanism is arranged on the mounting rod (2); the sliding control mechanism comprises a support (18) fixed on the mounting rod (2); a control motor (19) is fixed on the support (18); a cam (20) is sleeved and fixed on the output end of the control motor (19); a guide wheel (21) is rotatably sleeved on the support rod (7); the cam (20) and the guide wheel (21) are correspondingly matched; a compression spring (22) is connected in the through groove (6); the compression spring (22) is configured with a preload force for causing the guide wheel (21) to abut against the cam (20).

3. The cleaning device for additive manufacturing according to claim 1, characterized in that: The transmission screw (4) is a bidirectional screw structure with positive and negative teeth.

4. The cleaning device for additive manufacturing according to claim 1, characterized in that: The blowing head (11) and the suction head (10) are distributed one by one at intervals.

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