Efficient and automatic 3D printing powder cleaning equipment

Abstract

The utility model relates to the technical field of 3D printing powder cleaning, in particular to efficient and automatic 3D printing powder cleaning equipment which comprises a powder cleaning machine, a first mechanical arm is installed on the inner side of the powder cleaning machine, a powder suction pipeline is installed on the end side of the first mechanical arm, an air inlet is formed in the side wall of the powder cleaning machine, and a base plate outlet is formed in the top of the powder cleaning machine. A second mechanical arm is mounted in the powder cleaning machine, a connecting column is fixed to the end side of the second mechanical arm, a mounting disc is fixed to the end side of the connecting column, an adjustable vacuum suction cup is mounted on the end side of the second mechanical arm, a rotatable air inlet pipe is arranged on the inner wall of the powder cleaning machine, and the end side of the air inlet pipe communicates with a spray head. And a falling powder outlet is formed in the end side of the powder cleaning machine. According to the efficient and automatic 3D printing powder cleaning equipment, continuous and automatic powder cleaning can be achieved, parts can be driven to rotate and vibrate during powder cleaning, powder blowing is carried out in the process, residual powder on the parts is cleaned away, and then the powder cleaning efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing powder cleaning, in particular to a highly efficient and automatic 3D printing powder cleaning device. 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 and uses adhesive materials such as powdered metal or plastic to construct objects by printing layer by layer.

[0003] After completing the 3D printing work, it is necessary to clean and recycle the excess metal powder on the substrate. A 3D printing automatic powder cleaning device is an automatic powder cleaning device for 3D printed inner cavity parts.

[0004] When using existing powder cleaning equipment, it is necessary to manually load the substrate and then perform a purge operation in a sealed cabin. Inert gas is injected into the sealed cabin to reduce the oxygen content to below 5000ppm before the powder cleaning can be carried out. After the powder cleaning is completed, the substrate needs to be replaced. At this time, the cabin is no longer sealed, and the inert gas atmosphere inside the cabin will leak, causing the oxygen content to rise. If the powder is cleaned again, the inert gas needs to be repeatedly injected into the sealed cabin. The powder cleaning can only be carried out after the oxygen content drops below 5000ppm again. However, this powder cleaning method requires repeated manual loading of the substrate and purge before each powder cleaning. The purge is time-consuming and the powder cleaning cycle is long, which is not conducive to improving production efficiency. Utility Model Content

[0005] The purpose of the present invention is to provide an efficient and automatic 3D printing powder cleaning device to solve the problem in the above background technology that the powder cleaning cycle of the existing powder cleaning device is long, which is not conducive to improving production efficiency. To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a powder purifier, a first mechanical arm is installed on the inner side of the powder purifier, a powder suction pipeline is installed on the end side of the first mechanical arm, an air inlet is opened on the side wall of the powder purifier, a base plate outlet is provided on the top of the powder purifier, a second mechanical arm is installed inside the powder purifier, an adjustable vacuum suction cup is installed on the end side of the second mechanical arm, a connecting column is fixed on the end side of the second mechanical arm, a mounting plate is fixed on the end side of the connecting column, a first motor is fixed on the bottom of the mounting plate, the output end of the first motor is fixedly connected to a transmission rod, a first gear is fixedly sleeved on the outside of the transmission rod, a second gear is meshed with the end side of the first gear, a fixed rod is fixed on the surface of the second gear, a sliding rod is slidably sleeved on the outside of the fixed rod, a connecting plate is fixed on the end side of the sliding rod, the connecting plate is fixedly connected to the vacuum suction cup, a rotatable air inlet pipe is provided on the inner wall of the powder purifier, a nozzle is connected to the end side of the air inlet pipe, and a powder drop outlet is opened on the end side of the powder purifier.

[0006] Preferably, a forming cylinder is installed at the bottom of the powder purifier, a quick-release mechanism is installed inside the forming cylinder for removing the substrate, a lifting mechanism is installed inside the forming cylinder for driving the substrate to rise and fall, and a cover plate is installed on the top of the lifting mechanism.

[0007] Preferably, a support shaft is connected to the side wall of the mounting plate, the inner diameter of the second gear is larger than the outer diameter of the support shaft and the two are coaxially arranged, and a support frame is fixed to the top of the support shaft.

[0008] Preferably, a second motor is installed at the bottom of the mounting plate, and the output end of the second motor is fixedly connected to a screw, the external thread of the screw is sleeved with a hollow sliding rod, the hollow inner wall of the sliding rod is provided with an external thread that cooperates with the screw thread, and the sliding rod is rotatably connected to the connecting plate.

[0009] Preferably, the sliding rod is placed in the support frame and slides horizontally.

[0010] Preferably, a bracket is fixed to the inner wall of the powder purifier, a third motor is installed on the top of the bracket, the output end of the third motor is fixedly connected to a transmission shaft, a turntable is fixed to the end side of the transmission shaft, and a sliding cylinder is slidably connected to the inside of the turntable.

[0011] Preferably, an upward protrusion is provided on the top of the sliding cylinder, the upward protrusion of the sliding cylinder is embedded in the turntable and slides, and the bottom of the sliding cylinder is set in a cylindrical shape.

[0012] Preferably, a sleeve is fixedly sleeved on the outside of the air intake pipe, two sleeves are provided, a support rod is fixedly connected between the two sleeves, and the sliding cylinder slides coaxially with the support rod.

[0013] Preferably, a fan is installed on the side wall of the powder purifier, the end side of the fan is connected to a connecting pipe, the top of the connecting pipe is connected to a bellows, and the bellows is connected to the air inlet pipe.

[0014] Preferably, a pulse generator is installed on the side wall of the powder purifier.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the utility model, continuous and automatic powder cleaning can be achieved, and the parts can be driven to rotate and vibrate during powder cleaning, accompanied by powder blowing during the process to clean the remaining powder on the parts, thereby improving the powder cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 3 It is a partial structural diagram of the utility model;

[0020] Figure 4 For the utility model Figure 1 Schematic diagram of the connection structure between the second robotic arm and the vacuum suction cup;

[0021] Figure 5 For the utility model Figure 4 Schematic diagram of the lifting and rotating adjustment structure of the mid-drive vacuum suction cup;

[0022] Figure 6 For the utility model Figure 1 Schematic diagram of the connection structure of the air intake pipe, fan, bellows and other components.

[0023] In the figure: 1 powder purifier; 2 first robotic arm; 3 powder suction pipeline; 4 air inlet; 5 cover plate; 6 forming cylinder; 7 quick release mechanism; 8 lifting mechanism; 9 substrate outlet; 10 second robotic arm; 11 vacuum suction cup; 1101 connecting column; 1102 mounting plate; 1103 first motor; 1104 transmission rod; 1105 first gear; 1106 second gear; 1107 support shaft; 1108 fixing rod; 1109 sliding rod; 1110 connecting plate; 1111 second motor; 1112 screw; 1113 sliding rod; 1114 support frame; 12 air inlet pipe; 1201 bracket; 1202 third motor; 1203 transmission shaft; 1204 turntable; 1205 sliding cylinder; 1206 support rod; 1207 sleeve column; 13 nozzle; 14 fan; 15 connecting pipe; 16 bellows; 17 powder drop outlet; 18 pulse generator. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] See also Figures 1 to 6The utility model provides a technical solution: an efficient and automatic 3D printing powder cleaning device, comprising a powder cleaning machine 1, a first mechanical arm 2 is installed on the inner side of the powder cleaning machine 1, a powder suction pipeline 3 is installed on the end side of the first mechanical arm 2, an air inlet 4 is opened on the side wall of the powder cleaning machine 1, a substrate outlet 9 is provided on the top of the powder cleaning machine 1, a second mechanical arm 10 is installed inside the powder cleaning machine 1, an adjustable vacuum suction cup 11 is installed on the end side of the second mechanical arm 10, a connecting column 1101 is fixed on the end side of the connecting column 1101, a mounting plate 1102 is fixed on the end side of the mounting plate 1102, and a first motor 1103 is fixed on the bottom of the mounting plate 1102 The output end of the first motor 1103 is fixedly connected to a transmission rod 1104, the outside of the transmission rod 1104 is fixedly sleeved with a first gear 1105, the end side of the first gear 1105 is meshed with a second gear 1106, the surface of the second gear 1106 is fixed with a fixed rod 1108, the outside of the fixed rod 1108 is slidably sleeved with a slide rod 1109, the end side of the slide rod 1109 is fixed with a connecting plate 1110, and the connecting plate 1110 is fixedly connected to the vacuum suction cup 11, the inner wall of the powder purifier 1 is provided with a rotatable air inlet pipe 12, the end side of the air inlet pipe 12 is connected to a nozzle 13, and the end side of the powder purifier 1 is provided with a powder dropping outlet 17.

[0026] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a forming cylinder 6 is installed at the bottom of the powder purifier 1, and a quick-release mechanism 7 is installed inside the forming cylinder 6 for removing the substrate. A lifting mechanism 8 is installed inside the forming cylinder 6 for driving the substrate to rise and fall, and a cover plate 5 is installed on the top of the lifting mechanism 8.

[0027] It should be noted that the quick-release mechanism 7 and the lifting mechanism 8 are placed in the forming cylinder 6 of the 3D printing equipment. The main innovation of this application is not in 3D printing, so it will not be described in detail.

[0028] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a support shaft 1107 is connected to the side wall of the mounting plate 1102 , the inner diameter of the second gear 1106 is larger than the outer diameter of the support shaft 1107 and the two are coaxially arranged, and a support frame 1114 is fixed to the top of the support shaft 1107 .

[0029] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, a second motor 1111 is installed at the bottom of the mounting plate 1102, and the output end of the second motor 1111 is fixedly connected to a screw 1112, and the external thread of the screw 1112 is sleeved with a hollow sliding rod 1113, and the hollow inner wall of the sliding rod 1113 is provided with an external thread that cooperates with the thread of the screw 1112, and the sliding rod 1113 is rotatably connected to the connecting plate 1110.

[0030] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the sliding rod 1113 is placed in the support frame 1114 and slides horizontally.

[0031] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a bracket 1201 is fixed to the inner wall of the powder purifier 1, a third motor 1202 is installed on the top of the bracket 1201, the output end of the third motor 1202 is fixedly connected to a transmission shaft 1203, a turntable 1204 is fixed to the end side of the transmission shaft 1203, and a sliding cylinder 1205 is slidably connected to the inside of the turntable 1204.

[0032] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the top of the sliding cylinder 1205 is provided with an upward protrusion, and the upward protrusion of the sliding cylinder 1205 is embedded in the turntable 1204 for sliding, and the bottom of the sliding cylinder 1205 is set in a cylindrical shape.

[0033] It should be noted that a slide is designed inside the turntable 1204, and an upward protrusion is provided on the top of the sliding cylinder 1205, which is embedded in the slide of the turntable 1204. When the turntable 1204 rotates, the turntable 1204 will rotate around the circle. At this time, the protrusion will slide up and down inside the slide of the turntable 1204, and the cylindrical shape at the bottom of the sliding cylinder 1205 will slide horizontally on the outside of the support rod. As the turntable 1204 continues to rotate, the protrusion of the sliding cylinder 1205 will move in the circumferential position, and at the same time, the sleeve column 1207 will be driven. The force is placed in the bracket 1201, and the intake pipe 12 deflects back and forth in the circumferential direction. When the turntable 1204 rotates circumferentially, it acts on the sliding cylinder 1205 to generate a force that deflects back and forth in the circumferential direction of the intake pipe 12. When the sliding cylinder 1205 deflects coaxially with the intake pipe 12, the upward protrusion slides up and down in the slideway of the turntable 1204, offsetting the change in the vertical position of the sliding cylinder 1205 when deflecting coaxially with the intake pipe 12. In addition, the intake pipe 12 also swings back and forth with the sleeve 1207, thereby achieving a back-and-forth swinging effect. This design ensures that the sliding cylinder 1205 can stably follow the rotation of the turntable 1204, thereby achieving stability in the subsequent back-and-forth swinging of the intake pipe 12.

[0034] The bottom cylinder of the sliding cylinder 1205 and the support rod 1206 have matching sliding surfaces, with a large contact area and matching shapes, which helps to achieve smoother sliding.

[0035] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a sleeve column 1207 is fixedly sleeved on the outside of the air intake pipe 12. There are two sleeve columns 1207. A support rod 1206 is fixedly connected between the two sleeve columns 1207. The sliding cylinder 1205 is slidably sleeved on the support rod 1206.

[0036] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a fan 14 is installed on the side wall of the powder purifier 1 , the end side of the fan 14 is connected to a connecting pipe 15 , the top of the connecting pipe 15 is connected to a bellows 16 , and the bellows 16 is connected to the air inlet pipe 12 .

[0037] It should be noted that the bellows 16 is flexible and retractable, and can adapt to different installation positions and angles between the connecting pipe 15 and the air intake pipe 12 to ensure smooth transmission of airflow.

[0038] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a pulse generator 18 is installed on the side wall of the powder purifier 1.

[0039] It should be noted that the pulse gas generated by the pulse generator 18 forms an oscillating airflow which is then filled with inert gas.

[0040] It should be noted that the specific models and specifications of the first motor 1103 and the second motor 1111 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it is not repeated here.

[0041] The use method and advantages of this utility model: When this efficient and automatic 3D printing powder cleaning device is working, the working process is as follows:

[0042] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, after the main machine completes printing, the forming cylinder 6 is transferred to the powder cleaning device for powder cleaning by using a cylinder transfer method. The forming cylinder 6 contains a substrate, parts and powder filled in the cylinder. The forming cylinder 6 is docked with the powder cleaning machine 1 in an automated manner. There is a corresponding lifting mechanism under the forming cylinder 6. After the forming cylinder 6 reaches the preset position, the lifting mechanism pushes the substrate, the associated parts and powder to move to the inside of the powder cleaning machine 1 for powder cleaning. There is a cover plate 5 at the interface between the forming cylinder 6 and the powder cleaning machine 1. When the substrate runs to the interface, the second robot arm 10 is started to rotate and drive the vacuum suction cup 11 to move to the top of the cover plate 5. The second motor 1111 is started to drive the screw 1112 to rotate in the support shaft 1107. The screw 1 When 112 rotates, the sliding rod 1113 with its external thread sleeve is immediately placed in the support frame 1114 and slides. At the same time, the sliding rod 1109 slides along the outside of the fixed rod 1108 and drives the vacuum suction cup 11 to descend and fit above the cover plate 5 to adsorb and grab it. When it is cleaned, the first motor 1103 is started to drive the transmission rod 1104 to drive the first gear 1105 to rotate and engage with the second gear 1106. The second gear 1106 is forced to rotate around the support shaft 1107. The vacuum suction cup 11 installed on the top through the connecting rod, sliding rod 1109, etc. immediately drives the adsorbed cover plate 5, substrate or related parts to rotate and vibrate, so that the powder is vibrated and the effect of automatic powder cleaning is achieved.

[0043] While cleaning, the fan 14 is started, and the generated gas is transported to the air inlet pipe 12 through the connecting pipe 15 and the bellows 16 and ejected through the nozzle 13. The third motor 1202 is started to drive the transmission shaft 1203 to drive the turntable 1204 to rotate, and the upward protrusion on the top of the sliding cylinder 1205 will move along the circumferential direction of the turntable 1204 and then slide up and down therein (when the turntable 1204 rotates, the sliding cylinder 1205 inside it will shift. In order to make the subsequent sleeve 1207 swing, the position of the sliding cylinder 1205 cannot be fixed. Therefore, a slideway is provided inside the turntable, and the upward protrusion slides therein. The slideway provides the sliding cylinder 1205 with a margin of movement when the turntable 1204 rotates to avoid being hindered by movement). At the same time, the sliding cylinder 1205 moves along the outer surface of the support rod 1206. The top of the turntable 1204 slides horizontally, and the rotation direction of the sliding cylinder 1205 is consistent with the swing direction of the sleeve 1207. When the turntable 1204 rotates, the sliding cylinder 1205 will drive its bottom cylindrical tube to slide horizontally along the support rod 1206 along the rotation trajectory of the turntable 1204, and the force received through its sliding is transmitted to the support rod 1206. The sleeves 1207 at both ends of the support rod 1206 will drive the air inlet pipe 12 to swing back and forth in the bracket 1201, so that after vibrating for a certain period of time, the nozzle 13 can be driven back and forth according to the set program to blow away the powder attached to the surface of the parts and the substrate. The cleaned substrate is transported to the next stage from the port on the side of the powder cleaning machine 1; at the same time, the powder suction pipeline 3 at the interface absorbs powder along the inner wall of the forming cylinder 6. After cleaning the forming cylinder 6, the sealing plate is covered and the forming cylinder 6 is transported to the next process.

[0044] The above shows and describes the basic principles, main features, and advantages of the present invention. Persons skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient and automatic 3D printing powder cleaning device, comprising a powder cleaning machine (1), characterized in that: A first mechanical arm (2) is installed on the inner side of the powder purifier (1), a powder suction pipeline (3) is installed on the end side of the first mechanical arm (2), an air inlet (4) is opened on the side wall of the powder purifier (1), a base plate outlet (9) is provided on the top of the powder purifier (1), a second mechanical arm (10) is installed inside the powder purifier (1), an adjustable vacuum suction cup (11) is installed on the end side of the second mechanical arm (10), a connecting column (1101) is fixed on the end side of the connecting column (1101), a mounting plate (1102) is fixed on the bottom of the mounting plate (1102), and a first motor (1103) is fixed on the output end of the first motor (1103) A transmission rod (1104), the outside of the transmission rod (1104) is fixedly sleeved with a first gear (1105), the end side of the first gear (1105) is meshed with a second gear (1106), the surface of the second gear (1106) is fixed with a fixed rod (1108), the outside of the fixed rod (1108) is slidably sleeved with a slide rod (1109), the end side of the slide rod (1109) is fixed with a connecting plate (1110), the connecting plate (1110) is fixedly connected to the vacuum suction cup (11), the inner wall of the powder purifier (1) is provided with a rotatable air inlet pipe (12), the end side of the air inlet pipe (12) is connected to a nozzle (13), and the end side of the powder purifier (1) is provided with a powder drop outlet (17).

2. The efficient and automatic 3D printing powder cleaning device according to claim 1, characterized in that: A forming cylinder (6) is installed at the bottom of the powder purifier (1), a quick-release mechanism (7) is installed inside the forming cylinder (6) for removing the substrate, a lifting mechanism (8) is installed inside the forming cylinder (6) for driving the substrate to rise and fall, and a cover plate (5) is installed on the top of the lifting mechanism (8).

3. The efficient and automatic 3D printing powder cleaning device according to claim 1, characterized in that: A support shaft (1107) is connected to the side wall of the mounting plate (1102), the inner diameter of the second gear (1106) is larger than the outer diameter of the support shaft (1107), and the two are coaxially arranged, and a support frame (1114) is fixed to the top of the support shaft (1107).

4. The efficient and automatic 3D printing powder cleaning device according to claim 3, characterized in that: A second motor (1111) is installed at the bottom of the mounting plate (1102), and a screw (1112) is fixedly connected to the output end of the second motor (1111), and a hollow sliding rod (1113) is sleeved on the external thread of the screw (1112), and the hollow inner wall of the sliding rod (1113) is provided with an external thread that matches the thread of the screw (1112), and the sliding rod (1113) is rotatably connected to the connecting plate (1110).

5. The efficient and automatic 3D printing powder cleaning device according to claim 4, characterized in that: The sliding rod (1113) is placed in the support frame (1114) and slides horizontally.

6. The efficient and automatic 3D printing powder cleaning device according to claim 1, characterized in that: A bracket (1201) is fixed to the inner wall of the powder purifier (1), a third motor (1202) is installed on the top of the bracket (1201), an output end of the third motor (1202) is fixedly connected to a transmission shaft (1203), a turntable (1204) is fixed to the end side of the transmission shaft (1203), and a sliding cylinder (1205) is slidably connected to the interior of the turntable (1204).

7. The efficient and automatic 3D printing powder cleaning device according to claim 6, characterized in that: The top of the sliding cylinder (1205) is provided with an upward protrusion, and the upward protrusion of the sliding cylinder (1205) is embedded in the rotating disk (1204) for sliding, and the bottom of the sliding cylinder (1205) is set in a cylindrical shape.

8. The efficient and automatic 3D printing powder cleaning device according to claim 6, characterized in that: The outside of the air intake pipe (12) is fixedly sleeved with a sleeve column (1207), two sleeve columns (1207) are provided, a support rod (1206) is fixedly connected between the two sleeve columns (1207), and the sliding cylinder (1205) slides coaxially with the support rod (1206).

9. The efficient and automatic 3D printing powder cleaning device according to claim 1, characterized in that: A fan (14) is installed on the side wall of the powder purifier (1), the end side of the fan (14) is connected to a connecting pipe (15), the top of the connecting pipe (15) is connected to a bellows (16), and the bellows (16) is connected to the air inlet pipe (12).

10. The efficient and automatic 3D printing powder cleaning device according to claim 1, characterized in that: A pulse generator (18) is installed on the side wall of the powder purifier (1).

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