Automatic powder cleaning box device for 3D printing

Abstract

The utility model relates to the technical field of 3D printing powder cleaning, in particular to a 3D printing automatic powder cleaning box device which comprises a forming cylinder, a sealing cover capable of moving up and down is arranged above the forming cylinder, a powder suction pipeline used for cleaning metal powder in the forming cylinder is arranged in the sealing cover, a mechanical arm is arranged in the sealing cover, and the mechanical arm is connected with the forming cylinder. The mechanical arm is used for installing the output end of the powder suction pipeline, an adjusting mechanism for controlling the mechanical arm to move is arranged in the sealing cover, and the adjusting mechanism comprises a servo motor, an adjusting gear, a supporting plate, a moving plate and a circular-ring-shaped end face gear. The servo motor can control the adjusting gear to rotate at a constant speed through the driving rod, the adjusting gear can drive the end face gear to rotate in the moving groove, the end face gear can control the mechanical arm to rotate through the moving plate and the mounting plate, the mechanical arm can conveniently control the powder suction pipeline to move, and powder cleaning operation is conducted on multiple angles in the forming cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing powder cleaning, in particular to an automatic powder cleaning box device for 3D printing. Background Art

[0002] 3D printing is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses digital model files as the basis, uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing is usually achieved using digital technology material printers. It is often used to make models in the fields of mold manufacturing, industrial design, etc., and later gradually used for the direct manufacturing of some products. There are already parts printed using this technology.

[0003] When the existing 3D printing powder cleaning equipment is working, in order to improve the powder cleaning efficiency of the metal powder in the forming cylinder of the 3D printing equipment, a powder suction pipeline is generally controlled by a robotic arm to extend into the interior of the forming cylinder to perform powder cleaning operations. However, since the position of the robotic arm is fixed, there will be a moving dead angle when the robotic arm controls the movement of the powder suction pipeline, and powder cleaning operations cannot be performed on multiple corners inside the forming cylinder, which will cause the robotic arm to be unable to control the powder suction pipeline to clean the metal powder inside the forming cylinder. Therefore, a 3D printing automatic powder cleaning box device is now proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art that, due to the fixed position of the robotic arm, when the robotic arm controls the movement of the powder suction pipeline, there will be blind spots in movement, and powder cleaning operations cannot be performed on multiple corners inside the forming cylinder, which will result in the robotic arm being unable to control the powder suction pipeline to clean the metal powder inside the forming cylinder. A 3D printing automatic powder cleaning box device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A 3D printing automatic powder cleaning box device, comprising a forming cylinder, a sealing cover that can move up and down is arranged above the forming cylinder, a powder suction pipeline for cleaning metal powder inside the forming cylinder is arranged inside the sealing cover, a suction head is arranged at the end of the powder suction pipeline, a mechanical arm is arranged inside the sealing cover, and the mechanical arm is used to install the output end of the powder suction pipeline;

[0007] An adjusting mechanism for controlling the movement of the mechanical arm is arranged inside the sealing cover, and the adjusting mechanism comprises a servo motor, an adjusting gear, a supporting plate, a moving plate and an annular end face gear;

[0008] The support plate is fixed in the sealing cover, the servo motor is fixed on the support plate, the adjusting gear is fixed on the output end of the servo motor, the end face gear rotates in the support plate, the moving plate is fixed on the end face gear, and the mechanical arm is fixed on the moving plate.

[0009] Preferably, a round hole is opened on the top of the sealing cover, and the powder suction pipeline is slidably connected to the round hole.

[0010] Preferably, a pulse generator penetrates and is fixedly connected to the inner wall of the sealing cover.

[0011] Preferably, a first electric push rod is arranged on the top of the sealing cover, a second electric push rod for controlling the up and down movement of the forming cylinder is arranged below the forming cylinder, a base plate is fixedly connected to the inner wall of the forming cylinder, and the top of the second electric push rod is connected to the bottom of the base plate through a quick release mechanism.

[0012] Preferably, an inflatable sealing ring with a U-shaped cross section is fixedly connected to the inner wall of the sealing cover, and an air inlet hole is opened on the outer wall of the sealing cover.

[0013] Preferably, a mounting plate is fixedly connected to a side of the robotic arm close to the movable plate, and a first mounting plate is provided with evenly distributed first mounting holes, and a second mounting plate is provided with evenly distributed second mounting holes on a side of the movable plate close to the mounting plate. The mounting plate and the movable plate are connected by mounting bolts and nuts, and the mounting bolts pass through the first mounting hole and the second mounting hole in sequence.

[0014] Preferably, the support plate is rectangular in shape, fixedly connected to the inner wall of the sealing cover, an opening is provided at the center of the support plate, a circular movable groove is provided inside the support plate, and the end face gear is slidably connected to the inner wall of the movable groove.

[0015] Preferably, the inner wall of the movable groove is provided with a movable opening which penetrates the interior of the opening, the movable plate passes through the movable opening and is slidingly connected to the inner wall of the movable opening, one end of the movable plate is fixedly connected to the inner wall of the end face gear, and the movable plate is arranged in an L shape.

[0016] Preferably, an adjustment port communicating with the interior of the movable groove is opened at the top of the support plate, the adjustment gear passes through the adjustment port and is meshed with the end face gear, one side of the adjustment gear is fixedly connected to a drive rod, one side of the drive rod is connected to the output end of the servo motor, and the bottom of the servo motor is fixedly connected to the top of the support plate.

[0017] Preferably, one end of the robotic arm is connected to the output end of a powder suction pipeline, and the powder suction pipeline is a plastic hose.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. When the equipment is in use, the adjustment mechanism is used to adjust the gears, the face gears and the moving plate to control the mechanical arm to rotate and move inside the sealing cover. The position of the mechanical arm can be adjusted to facilitate the mechanical arm to control the powder suction pipeline to clean the powder in multiple corners inside the forming cylinder. This can not only avoid the occurrence of moving dead angles, but also improve the powder suction path, greatly improve the powder cleaning effect, and thus clean the metal powder inside the forming cylinder.

[0020] 2. When the equipment is in use, the top of the forming cylinder can be sealed through the sealing cover to prevent the diffusion of metal powder. The installation bolts, nuts and mounting plates can be used to facilitate the installation and fixation of the robotic arm, and it is also convenient for disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the internal planar structure of a 3D printing automatic powder cleaning box device proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the internal three-dimensional structure of a sealing cover in a 3D printing automatic powder cleaning box device proposed by the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of a disassembled mechanical arm in a 3D printing automatic powder cleaning box device proposed by the utility model;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the connection between the adjusting gear, the adjusting port, the end gear, the moving groove and the moving port;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the connection between the servo motor, the driving rod, the adjusting gear, the end gear and the moving plate;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the connection between the mounting plate and the mechanical arm in the 3D printing automatic powder cleaning box device proposed by the utility model.

[0027] In the figure: 1. forming cylinder; 2. sealing cover; 3. powder suction pipeline; 4. mechanical arm; 5. servo motor; 6. adjusting gear; 7. supporting plate; 8. moving plate; 9. end gear; 10. pulse generator; 11. second electric push rod; 12. base plate; 13. quick release mechanism; 14. inflatable sealing ring; 15. air inlet hole; 16. mounting plate; 17. opening; 18. moving groove; 19. moving port; 20. adjusting port; 21. driving rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-Figure 6 , a 3D printing automatic powder cleaning box device, comprising a forming cylinder 1, a sealing cover 2 which can move up and down is arranged above the forming cylinder 1, a powder suction pipeline 3 for cleaning the metal powder inside the forming cylinder 1 is arranged inside the sealing cover 2, a suction head is arranged at the end of the powder suction pipeline 3, a mechanical arm 4 is arranged inside the sealing cover 2, and the mechanical arm 4 is used to install the output end of the powder suction pipeline 3;

[0030] It should be noted that the bottom moving end of the robot arm 4 is fixedly connected to a mounting block, a plug hole is provided on the mounting block, and the bottom of the powder suction pipeline 3 is fixedly connected to a suction head, which passes through the plug hole and is fixedly connected to the inner wall of the plug hole. The fixing method is preferably clamping. As the robot arm 4 moves, the suction head can suck out the metal powder inside the forming cylinder 1.

[0031] An adjusting mechanism for controlling the movement of the mechanical arm 4 is arranged inside the sealing cover 2, and the adjusting mechanism includes a servo motor 5, an adjusting gear 6, a supporting plate 7, a moving plate 8 and an annular end face gear 9;

[0032] The support plate 7 is fixed in the sealing cover 2, the servo motor 5 is fixed on the support plate 7, the adjustment gear 6 is fixed on the output end of the servo motor 5, the end gear 9 rotates in the support plate 7, the moving plate 8 is fixed on the end gear 9, and the mechanical arm 4 is fixed on the moving plate 8.

[0033] It should be noted that the specific model specifications of the servo motor 5 and the robotic arm 4 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it is not explained, and both can be powered by external devices and controlled to be turned on and off.

[0034] It should be noted that a U-shaped cleaning table is provided on one side of the forming cylinder 1, the top of the cleaning table is fixedly connected to the first electric push rod, the telescopic end of the first electric push rod is fixedly connected to the top of the sealing cover 2, and the sealing cover 2 can be controlled to move up and down through the first electric push rod, wherein the cleaning table and the first electric push rod are not drawn.

[0035] It should be noted that the bottom of the cleaning table is fixedly connected to the second electric push rod 11, and the upward and downward movement of the forming cylinder 1 can be controlled by the second electric push rod 11.

[0036] Reference Figure 1 A round hole is provided on the top of the sealing cover 2, and the powder suction pipeline 3 is slidably connected to the round hole.

[0037] It should be noted that a ring-shaped rubber protective pad is fixedly connected to the inner wall of the circular hole, and the powder suction pipeline 3 passes through the rubber protective pad, so that the outer wall of the powder suction pipeline 3 can be protected and the powder suction pipeline 3 can be prevented from being damaged by friction with the inner wall of the circular hole.

[0038] It should be noted that a powder suction device is connected to the top of the powder suction pipeline 3 , and the powder suction device may be a negative pressure fan or other device. The powder suction device may suck out and discharge the metal powder inside the forming cylinder 1 through the powder suction pipeline 3 .

[0039] It should be noted that the powder suction pipeline 3 is long enough and is a plastic hose that can move with the robot arm 4 .

[0040] Reference Figure 1 A pulse generator 10 penetrates and is fixedly connected to the inner wall of the sealing cover 2.

[0041] It should be noted that the pulse generator 10 is a prior art, which can be powered by an external device and controlled to be turned on and off, and the pulse generator 10 can generate pulses, which will impact the surface of the workpiece, causing some of the powder attached to the inner wall of the forming cylinder 1 and the metal powder attached to the surface of the workpiece to fall off.

[0042] Reference Figure 1 A first electric push rod is arranged on the top of the sealing cover 2, and a second electric push rod 11 for controlling the up and down movement of the forming cylinder 1 is arranged below the forming cylinder 1. A base plate 12 is fixedly connected to the inner wall of the forming cylinder 1, and the top of the second electric push rod 11 is connected to the bottom of the base plate 12 through a quick release mechanism 13.

[0043] It should be noted that the quick-release mechanism 13 includes a connecting plate and a plurality of connecting bolts. The top of the second electric push rod 11 is fixedly connected to the bottom of the connecting plate. The top of the connecting plate is in contact with the bottom of the base plate 12. A plurality of connecting holes are provided on the surface of the connecting plate. A plurality of threaded holes are provided on the top of the base plate 12. A plurality of connecting bolts respectively penetrate the plurality of connecting holes. The plurality of connecting bolts are respectively threadedly connected to the plurality of threaded holes. In this way, the quick-release mechanism 13 is used to facilitate the installation, fixation, and disassembly and removal of the forming cylinder 1.

[0044] Reference Figure 1 The inner wall of the sealing cover 2 is fixedly connected with an inflatable sealing ring 14 with a “U”-shaped cross section, and the outer wall of the sealing cover 2 is provided with an air inlet hole 15.

[0045] It should be noted that the inflatable sealing ring 14 is made of rubber and has a circular cavity inside. An inflation tube is provided at the bottom of the inflatable sealing ring 14, and a valve is provided on the inflation tube. External equipment can fill air into the inflatable sealing ring 14 through the inflation tube. The inflatable sealing ring 14 filled with air can achieve a better sealing effect when the sealing cover 2 covers the outer wall of the forming cylinder 1, and can effectively prevent the diffusion of metal powder.

[0046] It should be noted that, through the air inlet hole 15 , external air can enter the interior of the sealing cover 2 , so that the powder suction pipeline 3 can perform normal powder suction and cleaning operations.

[0047] It should be noted that the air pressure inside the sealing cover 2 is lower than the air pressure outside the sealing cover 2 , so the air inside the sealing cover 2 will not leak out from the air inlet 15 .

[0048] Reference Figure 2 , Figure 6 A mounting plate 16 is fixedly connected to one side of the robot arm 4 close to the moving plate 8, and a first mounting hole is opened on the mounting plate 16 which is evenly distributed. A second mounting hole is opened on one side of the moving plate 8 close to the mounting plate 16 which is evenly distributed. The mounting plate 16 and the moving plate 8 are connected by mounting bolts and nuts, and the mounting bolts pass through the first mounting hole and the second mounting hole in sequence.

[0049] It should be noted that by inserting the mounting bolts into the first mounting hole and the second mounting hole in sequence and tightening the nuts, the robotic arm 4 can be installed and fixed on the movable plate 8, so that when the movable plate 8 moves, the position of the robotic arm 4 can be adjusted and the powder suction path can be improved, thereby greatly improving the powder cleaning effect.

[0050] Reference Figure 2 , Figure 4 The support plate 7 is rectangular in shape and fixedly connected to the inner wall of the sealing cover 2. An opening 17 is provided at the center of the support plate 7. A circular movable groove 18 is provided inside the support plate 7. The end face gear 9 is slidably connected to the inner wall of the movable groove 18.

[0051] It should be noted that the end face gear 9 is arranged in a circular ring shape, and the end face gear 9 can perform circular rotation movement inside the moving groove 18 .

[0052] It should be noted that the support plate 7 is composed of a first plate and a second plate, which makes it convenient to place the end face gear 9 into the movable groove 18, wherein the first plate is fixedly connected to the inner wall of the sealing cover 2, and a plurality of connecting blocks are fixedly connected to the top of the second plate, and the connecting blocks are installed and connected to the inner wall of the sealing cover 2 by fastening bolts, which facilitates the installation and fixation of the position of the second plate, and the second plate can also be disassembled at the same time, which facilitates the installation and removal of the end face gear 9.

[0053] Reference Figure 2 , Figure 4 The inner wall of the movable groove 18 is provided with a movable opening 19 which is communicated with the inside of the opening 17. The movable plate 8 passes through the movable opening 19 and is slidingly connected with the inner wall of the movable opening 19. One end of the movable plate 8 is fixedly connected with the inner wall of the end face gear 9. The movable plate 8 is arranged in an L shape.

[0054] It should be noted that the moving plate 8 can move in a circular rotation through the annular moving opening 19 .

[0055] Reference Figure 2 , Figure 4 , Figure 5 The top of the support plate 7 is provided with an adjustment port 20 which is connected with the inside of the movable groove 18. The adjustment gear 6 passes through the adjustment port 20 and is meshed with the end gear 9. A driving rod 21 is fixedly connected to one side of the adjustment gear 6. One side of the driving rod 21 is connected to the output end of the servo motor 5. The bottom of the servo motor 5 is fixedly connected to the top of the support plate 7.

[0056] It should be noted that the teeth on the end face gear 9 are arranged upward, so that they mesh with the adjusting gear 6. When the adjusting gear 6 rotates, it can drive the end face gear 9 to rotate inside the moving groove 18, and can control the movement of the moving plate 8 and the mechanical arm 4, which is more convenient.

[0057] Reference Figure 1 One end of the robot arm 4 is connected to the output end of the powder suction pipeline 3, and the pipeline end of the powder suction pipeline 3 is a plastic hose.

[0058] It should be noted that when the robot arm 4 moves, it can control the movement of the powder suction pipeline 3 , and when the bottom of the powder suction pipeline 3 moves, it can perform powder cleaning operations on different positions inside the forming cylinder 1 .

[0059] Working principle of this utility model:

[0060] When the position of the robot arm 4 needs to be adjusted, the servo motor 5 is turned on. The servo motor 5 will control the uniform rotation of the adjustment gear 6 through the driving rod 21. The adjustment gear 6 will drive the end gear 9 to rotate inside the moving groove 18. The end gear 9 will control the rotation movement of the robot arm 4 through the moving plate 8 and the mounting plate 16, so that the robot arm 4 can control the movement of the powder suction pipeline 3 and perform powder cleaning operations at multiple angles inside the forming cylinder 1.

[0061] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A 3D printing automatic powder cleaning box device, comprising a forming cylinder (1), characterized in that: A sealing cover (2) that can move up and down is arranged above the molding cylinder (1); a powder suction pipeline (3) for cleaning metal powder inside the molding cylinder (1) is arranged inside the sealing cover (2); a suction head is arranged at the end of the powder suction pipeline (3); a mechanical arm (4) is arranged inside the sealing cover (2); the mechanical arm (4) is used to install the output end of the powder suction pipeline (3); An adjusting mechanism for controlling the movement of the mechanical arm (4) is arranged inside the sealing cover (2), the adjusting mechanism comprising a servo motor (5), an adjusting gear (6), a supporting plate (7), a moving plate (8) and a circular end face gear (9); The support plate (7) is fixed in the sealing cover (2), the servo motor (5) is fixed on the support plate (7), the adjustment gear (6) is fixed on the output end of the servo motor (5), the end face gear (9) rotates in the support plate (7), the moving plate (8) is fixed on the end face gear (9), and the mechanical arm (4) is fixed on the moving plate (8).

2. A 3D printing automatic powder cleaning box device according to claim 1, characterized in that: A circular hole is provided on the top of the sealing cover (2), and the powder suction pipeline (3) is slidably connected to the circular hole.

3. The 3D printing automatic powder cleaning box device according to claim 1, characterized in that: A pulse generator (10) penetrates and is fixedly connected to the inner wall of the sealing cover (2).

4. The 3D printing automatic powder cleaning box device according to claim 1, characterized in that: A first electric push rod is arranged on the top of the sealing cover (2), a second electric push rod (11) is arranged below the forming cylinder (1) for controlling the upward and downward movement of the forming cylinder (1), a base plate (12) is fixedly connected to the inner wall of the forming cylinder (1), and the top of the second electric push rod (11) is connected to the bottom of the base plate (12) via a quick-release mechanism (13).

5. The 3D printing automatic powder cleaning box device according to claim 1, characterized in that: An inflatable sealing ring (14) having a U-shaped cross section is fixedly connected to the inner wall of the sealing cover (2), and an air inlet hole (15) is provided on the outer wall of the sealing cover (2).

6. The 3D printing automatic powder cleaning box device according to claim 1, characterized in that: A mounting plate (16) is fixedly connected to a side of the mechanical arm (4) close to the movable plate (8), the mounting plate (16) being provided with evenly distributed first mounting holes, and a side of the movable plate (8) close to the mounting plate (16) being provided with evenly distributed second mounting holes, the mounting plate (16) and the movable plate (8) being connected via mounting bolts and nuts, the mounting bolts passing through the first mounting holes and the second mounting holes in sequence.

7. The 3D printing automatic powder cleaning box device according to claim 1, characterized in that: The support plate (7) is arranged in a rectangular shape, the support plate (7) is fixedly connected to the inner wall of the sealing cover (2), an opening (17) is provided at the center of the support plate (7), a circular ring-shaped moving groove (18) is provided inside the support plate (7), and the end face gear (9) is slidably connected to the inner wall of the moving groove (18).

8. The 3D printing automatic powder cleaning box device according to claim 7, characterized in that: The inner wall of the movable groove (18) is provided with a movable opening (19) which is communicated with the interior of the opening (17); the movable plate (8) passes through the movable opening (19) and is slidably connected to the inner wall of the movable opening (19); one end of the movable plate (8) is fixedly connected to the inner wall of the end face gear (9); and the movable plate (8) is arranged in an L shape.

9. The 3D printing automatic powder cleaning box device according to claim 7, characterized in that: The top of the support plate (7) is provided with an adjustment opening (20) which is in communication with the interior of the movable groove (18); the adjustment gear (6) passes through the adjustment opening (20) and is meshedly connected with the end face gear (9); one side of the adjustment gear (6) is fixedly connected with a driving rod (21); one side of the driving rod (21) is connected to the output end of the servo motor (5); and the bottom of the servo motor (5) is fixedly connected to the top of the support plate (7).

10. The 3D printing automatic powder cleaning box device according to claim 1, characterized in that: One end of the mechanical arm (4) is connected to the output end of the powder suction pipeline (3), and the powder suction pipeline (3) is a plastic hose.

Images