An easy-to-use 3D printing equipment powder suction machine

Abstract

The present invention relates to the field of metal 3D printing technology, specifically to a convenient-to-use powder suction machine for 3D printing equipment, including a powder suction chassis and a powder cleaning mechanical arm, the bottom of the powder suction chassis is provided with a powder cleaning port for docking with a forming cylinder, the bottom right side of the powder suction chassis is provided with a powder drop port, and the right side wall of the powder suction chassis is also provided with a material taking port; the powder cleaning mechanical arm is arranged inside the powder suction chassis, and the free end of the powder cleaning mechanical arm is provided with a blowing pipe and an air suction pipe, and the blowing pipe and the air suction pipe are respectively connected to an external air source through a hose. The present invention has a powder suction chassis, and the inside of the powder suction chassis has an air suction pipe and an air blowing pipe connected to an external air source, and the positions of the air suction pipe and the air blowing pipe are controlled by the powder cleaning mechanical arm, so the present invention can use the air blowing pipe to lift the metal powder, and then use the air suction pipe to absorb the gas containing the metal powder, so that there is no need for manual cleaning, which greatly improves the cleaning efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of metal 3D printing, and in particular to a powder suction machine for 3D printing equipment that is easy to use. Background Art

[0002] Metal 3D printing, also known as metal additive manufacturing, is an advanced manufacturing technology that creates complex metal parts and components by stacking metal materials layer by layer.

[0003] At present, metal 3D printing equipment includes a forming cylinder, which has a substrate fixture and a lifting mechanism for controlling the up and down movement of the substrate fixture. Specifically, when performing 3D printing operations, the substrate needs to be placed on the substrate fixture and then fixed. As the printing work proceeds, metal powder is piled up layer by layer on the surface of the base to form a product. After printing, the base and the product still contain a large amount of metal powder, and there is also a large amount of metal powder inside the forming cylinder. Therefore, in order to avoid the waste of metal powder, the base, product and forming cylinder need to be cleaned before taking the material.

[0004] The traditional cleaning method is to manually open the door of the chassis, and then use handheld tools such as exhaust fans to manually clean the metal powder from the base and the internal gaps of the forming cylinder. Although this method can clean the metal powder, on the one hand, the efficiency is low and the labor intensity of the workers is high. On the other hand, after the door of the chassis is opened, external air will enter the chassis, thereby destroying the argon environment inside the chassis, so that before the next 3D printing operation, the machine needs to be cleaned again, which wastes a lot of working time and affects efficiency. To this end, we propose an easy-to-use 3D printing equipment powder suction machine to solve the above disadvantages. Summary of the invention

[0005] The purpose of the present invention is to provide an easy-to-use 3D printing equipment powder suction machine to solve the problems raised in the above-mentioned background technology.

[0006] The present invention is achieved through the following technical solutions:

[0007] A convenient 3D printing device powder suction machine, comprising:

[0008] A powder suction box, wherein the bottom of the powder suction box is provided with a powder cleaning port for docking with the forming cylinder, the right side of the bottom of the powder suction box is provided with a powder drop port, and the right side wall of the powder suction box is also provided with a material taking port;

[0009] A powder cleaning mechanical arm, wherein the powder cleaning mechanical arm is arranged inside the powder suction chassis, and a blowing pipe and an air suction pipe are arranged at the free end of the powder cleaning mechanical arm, and the blowing pipe and the air suction pipe are respectively connected to an external air source through a hose;

[0010] The material transfer robotic arm is disposed inside the powder suction chassis. A material transfer mechanism is provided at the free end of the material transfer robotic arm, and the material transfer mechanism is used for clamping the substrate.

[0011] Wherein, the material transfer mechanism includes a material transfer cover. Flow cavities are formed in the left and right side walls of the material transfer cover. First air cavities and second air cavities are respectively formed in the left and right sides of the top wall of the material transfer cover. The first air cavity and the second air cavity are respectively communicated with the two flow cavities. Air exchange ports communicated with the flow cavities are formed in the left and right inner side walls of the material transfer cover. First air holes and second air holes are respectively formed in the left and right sides of the top surface of the material transfer cover. A rotating part is rotatably provided on the top surface of the material transfer mechanism. The rotating part is in contact with the top surface of the material transfer mechanism. Third air holes and fourth air holes are further formed at the bottom of the rotating part. The third air hole and the fourth air hole are respectively communicated with an air suction pipe and a blowing pipe.

[0012] When the third air hole and the fourth air hole are respectively aligned with the first air hole and the second air hole, the air exchange ports on the left and right inner walls of the material transfer cover respectively suck air and blow air.

[0013] Optionally, the material transfer mechanism includes a material transfer frame. The material transfer frame is in a shape of a capital "冂". A bidirectional cylinder is disposed inside the material transfer frame. Material transfer sheets are respectively movably provided on the front and rear outer sides of the material transfer frame. Two movable ends of the bidirectional cylinder are respectively fixedly connected to the two material transfer sheets. Clamping holes are respectively formed in the front and rear sides of the bottom of the material transfer cover. Clamping columns are respectively provided on the facing surfaces of the two material transfer sheets. The two clamping columns respectively extend into the corresponding clamping holes.

[0014] Optionally, a positioning ring is provided on the top surface of the material transfer cover. The positioning ring is located outside the rotating part, and the positioning ring and the rotating part are rotatably matched through a bearing.

[0015] Optionally, a stabilizing part is in contact with the top surface of the rotating part. The stabilizing part is fixedly connected to the positioning ring through a connecting rod. An outer ring groove and an inner ring groove are formed in the inner bottom surface of the stabilizing part. The outer ring groove is communicated with the third air hole, and the inner ring groove is communicated with the fourth air hole.

[0016] Optionally, two air nozzles are further provided on the top surface of the stabilizing part. The two air nozzles are respectively communicated with the outer ring groove and the inner ring groove, and the two air nozzles are respectively used for connecting with the air suction pipe and the blowing pipe.

[0017] Optionally, a rotating shaft is rotatably provided on one side of the top surface of the material moving cover, the external fixed sleeve of the rotating shaft is provided with a first pulley and a driven gear, the external fixed sleeve of the rotating part is provided with a second pulley, and the first pulley and the second pulley are connected by a synchronous belt; an active rack matched with the driven gear is provided on one side of the inner wall of the powder suction machine chassis, the active rack is distributed along the moving path of the material moving cover, and when the driven gear moves to the position of the active rack with the material moving cover, it will rotate 180° under the action of the active rack.

[0018] Optionally, the left and right side walls of the material transfer hood are further provided with interlayer cavities, the two interlayer cavities are located on the inner sides of the two circulation cavities, and the interlayer cavities and the circulation cavities are connected through ventilation ports, and a liftable baffle plate is movable inside the interlayer cavity, and a through hole is provided on the baffle plate, and the aperture of the through hole is smaller than the aperture of the ventilation port.

[0019] Optionally, a permanent magnet is provided at the top of the baffle plate, and an electromagnet is provided at the top of the interlayer cavity. When the electromagnet is energized, the facing magnetic poles of the electromagnet and the permanent magnet are the same, the baffle plate is fitted with the bottom end of the interlayer cavity, and the lower edge of the through hole and the ventilation port are aligned; when the electromagnet is de-energized, the electromagnet and the permanent magnet attract each other, and the bottom end of the baffle plate is aligned with the upper edge of the ventilation port.

[0020] Optionally, conductive components are staggeredly distributed on the front and rear side walls of the interior of the powder suction chassis and on the left and right sides of the active rack, and the conductive components are composed of two parallel conductive copper sheets. A power supply is also provided on the outside of the powder suction chassis, and the positive and negative poles of the power supply are respectively connected to the two conductive copper sheets in the conductive component through wires; two conductive contacts are provided on the front and rear sides of the top of the material transfer cover, and the two conductive contacts are respectively connected to the two leads of the corresponding electromagnet, and the two conductive contacts respectively correspond to the two conductive copper sheets in the corresponding conductive component.

[0021] Optionally, lifting rods are provided on the front and rear sides of the top of the baffle plate, and movable openings for the lifting rods to pass through are opened on the front and rear side walls of the material transfer cover, and the movable openings are distributed vertically; the front and rear side walls inside the powder suction box are provided with lifting ramps corresponding to the conductive components, both ends of the lifting ramps exceed the two ends of the conductive components, and the height difference of the lifting ramps is consistent with the height of the ventilation port.

[0022] Compared with the prior art, the present invention provides a convenient-to-use 3D printing device powder suction machine, which has the following beneficial effects:

[0023] The present invention has a powder suction box, and the inside of the powder suction box has an air suction pipe and an air blowing pipe connected to an external air source, and the positions of the air suction pipe and the air blowing pipe are controlled by a powder cleaning mechanical arm. Therefore, the present invention can use the air blowing pipe to lift the metal powder, and then use the air suction pipe to absorb the gas containing the metal powder, so that manual cleaning is not required, which greatly improves the cleaning efficiency;

[0024] After the material transfer mechanism in the present invention is connected with the suction pipe and the blowing pipe, as the material transfer mechanism is translated to the right and close to the material taking port, one side of the material transfer cover blows air and the other side sucks air, and when the material transfer cover passes through the active rack, the blowing side and the suction side swap positions, so the present invention can reduce cleaning dead angles and improve the thoroughness of metal powder cleaning;

[0025] When the blowing side of the material transfer hood in the present invention blows air, the gas can only be blown out from the through hole, which helps to increase the air flow rate and blow away the stubborn metal powder attached to the product or substrate, thereby further improving the thoroughness of metal powder cleaning;

[0026] When the blowing side of the material transfer hood in the present invention is blowing, the corresponding shielding plate will also slowly rise under the action of the lifting ramp, that is, the position of the through hole is slowly moving upward, thereby helping to expand the blowing range and further avoiding the occurrence of cleaning dead corners. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is another state schematic diagram of the present invention;

[0029] Figure 3 It is a schematic diagram of the material transfer mechanism of the present invention;

[0030] Figure 4 It is a cross-sectional view of the material transfer mechanism of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the material moving rack of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the rotating part of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the conductive component of the present invention;

[0034] Figure 8 for Figure 3 The corresponding figure at A is enlarged;

[0035] Fig. 9 for Figure 4 The corresponding figure at point B is enlarged.

[0036] In the figure: 100, powder suction box; 101, powder cleaning port; 102, powder drop port; 103, material taking port; 104, sealed hatch; 105, conductive component; 106, lifting ramp; 200, powder cleaning robot arm; 201, air blowing pipe; 202, air suction pipe; 300, material transfer robot arm; 400, material transfer mechanism; 401, material transfer cover; 402, material transfer rack; 403, two-way cylinder; 404, material transfer sheet; 405, clamping hole; 406, clamping column; 407, circulation cavity; 408, first air cavity; 409, second air cavity; 410, ventilation port ; 411, first air hole; 412, second air hole; 413, rotating part; 414, third air hole; 415, fourth air hole; 416, positioning ring; 417, stabilizing part; 418, outer ring groove; 419, inner ring groove; 420, rotating shaft; 421, first pulley; 422, second pulley; 423, driven gear; 424, active rack; 425, interlayer cavity; 426, baffle; 427, through hole; 428, permanent magnet; 429, electromagnet; 430, conductive contact; 431, lifting rod; 432, movable port; 500, power supply. DETAILED DESCRIPTION

[0037] 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 described embodiments 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1 - Fig. 9 A convenient powder suction machine for 3D printing equipment includes a powder suction chassis 100, a powder cleaning robot arm 200 and a material transfer robot arm 300, wherein a powder cleaning port 101 for docking with a forming cylinder is provided at the bottom of the powder suction chassis 100, a powder drop port 102 is also provided at the bottom of the powder suction chassis 100, and a material taking port 103 is provided on the right side wall of the powder suction chassis 100; a sealed cabin door 104 and a material transfer cylinder are also provided inside the powder suction chassis 100, wherein the material transfer cylinder is fixedly connected to the inner wall of the powder suction chassis 100, and the movable end of the material transfer cylinder is connected to the sealed cabin door 104, which is used to control the left and right translation of the sealed cabin door 104.

[0039] It should be noted that, in the natural state, the sealed door 104 is always covered at the powder cleaning port 101. When the bottom of the molding cylinder and the powder cleaning port 101 are docked, the material transfer cylinder controls the sealed door 104 to move horizontally to the right, thereby facilitating the substrate to enter the interior of the powder suction chassis 100.

[0040] Furthermore, the powder cleaning robot arm 200 is arranged inside the powder suction chassis 100, and the free end of the powder cleaning robot arm 200 is provided with a blowing pipe 201 and a suction pipe 202. Figure 1 As shown, the blowing pipe 201 and the suction pipe 202 are respectively connected to the external air source through a hose; the external air source can be an air pump, the air outlet end of the air pump is connected to the blowing pipe 201 through a hose, the air suction end of the air pump is connected to the suction pipe 202 through a hose, and the opening ends of the blowing pipe 201 and the suction pipe 202 are both vertically downward.

[0041] Furthermore, the material moving robot arm 300 is arranged inside the powder suction chassis 100, and a material moving mechanism 400 is provided at the free end of the material moving robot arm 300. The material moving mechanism 400 is used to clamp the substrate, and the material moving robot arm 300 is used to deliver the substrate to the material taking port 103.

[0042] The material transfer mechanism 400 is introduced as follows:

[0043] The material transfer mechanism 400 includes a material transfer cover 401. The material transfer cover 401 is a box-shaped structure with an open lower end and a closed upper end. Figure 4 As shown, the material moving mechanism 400 includes a material moving rack 402, which is in a U-shape and is fixedly connected to the free end of the material moving robot arm 300. A two-way cylinder 403 is provided inside the material moving rack 402, and material moving pieces 404 are movably provided on the front and rear sides of the outside of the material moving rack 402, and the two movable ends of the two-way cylinder 403 are fixedly connected to the two material moving pieces 404, respectively. Clamping holes 405 are provided on the front and rear sides of the bottom of the material moving cover 401, and clamping columns 406 are provided on the facing surfaces of the two material moving pieces 404, and the two clamping columns 406 extend into the corresponding clamping holes 405.

[0044] In addition, the inner size of the bottom of the material moving cover 401 is comparable to the size of the substrate to be clamped. When the material moving cover 401 is sleeved on the outside of the substrate and the two-way cylinder 403 simultaneously controls the two material moving pieces 404 to approach each other, the two clamping columns 406 can pass through the clamping holes 405 and tightly abut against the outer wall of the substrate, thereby fixing the substrate in the bottom of the material moving cover 401.

[0045] On the other hand, the left and right side walls of the material transfer cover 401 are both provided with a flow cavity 407. Figure 4As shown, the left and right sides of the top wall of the material transfer cover 401 are respectively provided with a first air cavity 408 and a second air cavity 409, the first air cavity 408 and the second air cavity 409 are respectively communicated with the two flow cavities 407, the left and right side walls of the interior of the material transfer cover 401 are both provided with ventilation ports 410 communicated with the flow cavities 407, the left and right sides of the top surface of the material transfer cover 401 are respectively provided with a first air hole 411 and a second air hole 412, the top surface of the material transfer cover 401 is also rotatably provided with a rotating part 413, the rotating part 413 is in contact with the top surface of the material transfer mechanism 400, and the bottom of the rotating part 413 is also provided with There are a third air hole 414 and a fourth air hole 415, and the third air hole 414 and the fourth air hole 415 are connected to the suction pipe 202 and the blowing pipe 201 respectively; when the third air hole 414 and the fourth air hole 415 are aligned with the first air hole 411 and the second air hole 412 respectively, the ventilation ports 410 located on the left and right sides of the inner wall of the material transfer cover 401 are respectively inhaled and blown; when the third air hole 414 and the fourth air hole 415 are aligned with the second air hole 412 and the first air hole 411 respectively, the ventilation ports 410 located on the left and right sides of the inner wall of the material transfer cover 401 are respectively blown and inhaled.

[0046] Furthermore, a positioning ring 416 is provided on the top surface of the material transfer cover 401, and the positioning ring 416 is located outside the rotating part 413, and the positioning ring 416 and the rotating part 413 are rotatably matched through a bearing. A stabilizing part 417 is fitted on the top surface of the rotating part 413, and the stabilizing part 417 is fixedly connected to the positioning ring 416 through a connecting rod. An outer ring groove 418 and an inner ring groove 419 are provided on the inner bottom surface of the stabilizing part 417, and the outer ring groove 418 is connected to the third air hole 414, and the inner ring groove 419 is connected to the fourth air hole 415. Two gas nozzles are also provided on the top surface of the stabilizing part 417, and the two gas nozzles are respectively connected to the outer ring groove 418 and the inner ring groove 419. The stabilizing part 417 and the rotating part 413 are sealed and fitted, and the rotating part 413 and the top surface of the material transfer cover 401 are sealed and fitted, so as to avoid gas leakage as much as possible.

[0047] It should be noted that the third air hole 414 and the fourth air hole 415 are symmetrically distributed on the left and right, and the first air hole 411 and the second air hole 412 are also symmetrically distributed on the left and right. Therefore, when the first air hole 411 and the second air hole 412 are aligned with the third air hole 414 and the fourth air hole 415 respectively, the rotating part 413 rotates 180°, and the first air hole 411 and the second air hole 412 are aligned with the fourth air hole 415 and the third air hole 414 respectively.

[0048] In one embodiment of the present application, a rotating shaft 420 is rotatably provided on one side of the top surface of the material transfer cover 401, and an external fixed sleeve of the rotating shaft 420 is provided with a first pulley 421 and a driven gear 423, and an external fixed sleeve of the rotating part 413 is provided with a second pulley 422, and the first pulley 421 and the second pulley 422 are connected by a synchronous belt; an active rack 424 adapted to the driven gear 423 is provided on one side of the inner wall of the powder suction chassis 100, and the active rack 424 and the driven gear 423 have the same height, and the active rack 424 is distributed along the moving path of the material transfer cover 401, and when the driven gear 423 passes through the active rack 424, the rotating part 413 rotates 180° under the action of the active rack 424. That is, during the left and right translation of the material shifting cover 401, each time when the driven gear 423 moves to a position facing the driving rack 424, the driven gear 423 can mesh with the driving rack 424, and when the driven gear 423 passes through the driving rack 424, the rotating part 413 rotates exactly 180°.

[0049] In the specific implementation process of this embodiment, first, when 3D printing is completed, there are not only products but also a large amount of metal powder on the substrate. At this time, the forming cylinder is controlled by an external device to move to the bottom of the powder suction box 100 and dock with the powder cleaning port 101. Then, the material transfer cylinder controls the sealing cabin door 104 to open, and the lifting mechanism in the forming cylinder controls the substrate clamp and the substrate to rise until the substrate completely enters the inside of the powder suction box 100. At this time, the material transfer robot arm 300 controls the material transfer mechanism 400 to move to the top of the substrate, and the lifting mechanism in the forming cylinder further controls the substrate clamp to rise until the substrate completely enters the bottom inner side of the material transfer cover 401. Finally, the two-way cylinder 403 is actuated, and the substrate is fixed inside the material transfer cover 401 using two material transfer sheets 404.

[0050] After the substrate is fixed, the lifting mechanism controls the substrate clamp to retract, and the powder cleaning robot arm 200 controls the blowing pipe 201 and the suction pipe 202 to be respectively inserted and sleeved on the outside of the two air nozzles, the external air source is started, and the material transfer robot arm 300 carries the material transfer cover 401 to move horizontally to the right; in the initial state, the first air cavity 408 and the second air cavity 409 are respectively connected to the suction pipe 202 and the blowing pipe 201, and at this time, the air exchange ports 410 on the left and right sides of the material transfer cover 401 are respectively inhaled and blown, which are used to blow up the metal powder on the surface of the substrate and the product, and sucked away through the suction pipe 202. When the material transfer cover 401 passes through the active rack 424, the rotating part 413 automatically rotates 180°, and at this time, the air exchange ports 410 on the left and right sides of the material transfer cover 401 are respectively blown and inhaled.

[0051] It is worth mentioning that there are two cleaning methods in this embodiment, one of which is to suck air on the left side of the material transfer cover 401 and blow air on the right side, and the other is to blow air on the left side and suck air on the right side of the material transfer cover 401. Obviously, the first cleaning can make the metal powder gather to the left and be discharged from the air exchange port 410 on the left, while the second cleaning can make the metal powder gather to the right and be discharged from the air exchange port 410 on the right. The blowing directions of the two cleanings are opposite, which can clean the metal powder more thoroughly and reduce the cleaning dead corners; on the other hand, each time cleaning, the blowing side and the suction side are always set independently, which is also more conducive to the metal powder being sucked away from the suction side.

[0052] In another embodiment of the present application, the left and right side walls of the material transfer cover 401 are further provided with interlayer cavities 425, the two interlayer cavities 425 are located on the inner sides of the two flow cavities 407, and the interlayer cavities 425 and the flow cavities 407 are communicated through the ventilation port 410, and the inner movement of the interlayer cavity 425 is provided with a liftable shielding plate 426, the thickness of the shielding plate 426 is adapted to the inner thickness of the interlayer cavity 425, and the shielding plate 426 is provided with a through hole 427, and the shielding plate 426 is provided with a through hole 427. A permanent magnet 428 is provided at the top, and an electromagnet 429 is provided at the top of the interlayer cavity 425. When the electromagnet 429 is energized, the magnetic poles of the facing ends of the electromagnet 429 and the permanent magnet 428 are the same. Under the action of repulsive force, the baffle 426 fits with the bottom end of the interlayer cavity 425, and the through hole 427 and the lower edge of the ventilation port 410 are aligned; when the electromagnet 429 is de-energized, the electromagnet 429 and the permanent magnet 428 attract each other, and the bottom end of the baffle 426 and the upper edge of the ventilation port 410 are aligned.

[0053] Therefore, in the initial state, neither of the two electromagnets 429 is energized. At this time, due to the attraction between the electromagnet 429 and the permanent magnet 428, the permanent magnet 428 and the electromagnet 429 attract each other and fit together, and at this time the two ventilation ports 410 are in a fully open state; when the electromagnet 429 is energized, under the action of repulsion, the baffle plate 426 moves downward, at this time the bottom end of the baffle plate 426 fits with the bottom end of the interlayer cavity 425, and the top end of the baffle plate 426 is higher than the upper edge of the ventilation port 410. Therefore, under the obstruction of the baffle plate 426, the gas can only enter and exit the ventilation port 410 through the through hole 427.

[0054] Furthermore, conductive components 105 are staggeredly distributed on the front and rear side walls of the inner part of the powder suction chassis 100 and on the left and right sides of the active rack 424. The conductive components 105 are composed of two conductive copper sheets parallel to each other, such as Figure 7As shown. A power supply 500 is also provided on the outside of the powder suction chassis 100, and the positive and negative poles of the power supply 500 are respectively connected to the two conductive copper sheets in the conductive component 105 through wires; two conductive contacts 430 are provided on the front and rear sides of the top of the material transfer cover 401, and the two conductive contacts 430 are respectively connected to the two leads of the corresponding electromagnet 429, and the two conductive contacts 430 correspond to the two conductive copper sheets in the corresponding conductive component 105. The conductive copper sheet and the conductive contact 430 are both made of copper and have good conductivity. In this embodiment, there are two conductive components 105, and the two conductive components 105 are respectively located on the front and rear side walls of the powder suction chassis 100, and on the left and right sides of the active rack 424. When the conductive contact 430 moves to the position facing the conductive component 105, the two conductive contacts 430 are respectively in contact with the two conductive copper sheets, and the corresponding electromagnet 429 is powered on.

[0055] It is worth mentioning that when the material moving cover 401 moves to the position of the conductive component 105 facing the left side of the active rack 424, the electromagnet 429 located on the right side of the material moving cover 401 is energized; when the material moving cover 401 moves to the position of the conductive component 105 facing the right side of the active rack 424, the electromagnet 429 located on the left side of the material moving cover 401 is energized; obviously, when the material moving cover 401 is located on the left side of the active rack 424, the ventilation port 410 on the right side of the material moving cover 401 blows air; when the material moving cover 401 moves to the right side of the active rack 424, the ventilation port 410 on the left side of the material moving cover 401 blows air. Therefore, the ventilation port 410 on the blowing side is blocked by the shielding plate 426, and the gas can only pass through the through hole 427 and blow toward the base. Since the aperture of the through hole 427 is much smaller than that of the ventilation port 410, the gas blown out from the through hole 427 has a faster flow rate than the gas blown out from the ventilation port 410, which is more conducive to eating up the metal powder attached to the surface of the product and the base. The ventilation port 410 on the other side needs to absorb the gas containing metal powder, so the ventilation port 410 on this side needs to be in an open state, which is more conducive to the metal powder directly entering the ventilation port 410.

[0056] Furthermore, lifting rods 431 are provided on both the front and rear sides of the top of the shielding plate 426, and movable openings 432 for the lifting rods 431 to pass through are provided on both the front and rear side walls of the material transfer cover 401, and the movable openings 432 are distributed vertically; the inner front and rear side walls of the powder suction chassis 100 are provided with lifting ramps 106 corresponding to the conductive components 105, and both ends of the lifting ramps 106 exceed both ends of the conductive components 105, and the height difference of the lifting ramps 106 is consistent with the height of the ventilation port 410. It is worth mentioning that there are two pairs of lifting ramps 106, each pair has two lifting ramps 106, and the two lifting ramps 106 of each pair are symmetrically distributed on the inner front and rear side walls of the powder suction chassis 100, and the two lifting ramps 106 of each pair are aligned with the corresponding conductive components 105. Furthermore, when the material moving cover 401 moves to a position directly opposite to the lifting inclined rail 106 , the corresponding two lifting rods 431 can slide along the lifting inclined rail 106 , so that the corresponding shielding plate 426 can slowly rise.

[0057] It should also be noted that when the lifting rod 431 is in contact with the lower end of the lifting ramp 106, the bottom end of the corresponding shielding plate 426 is in contact with the bottom end of the interlayer cavity 425, and when the lifting rod 431 is in contact with the higher end of the lifting ramp 106, the through hole 427 on the corresponding shielding plate 426 is aligned with the upper edge of the ventilation port 410. That is, when the lifting rod 431 slides along the lifting ramp 106, the through hole 427 just moves from the lower edge of the ventilation port 410 to the upper edge of the ventilation port 410. Its function is to change the airflow path, increase the blowing range, and further avoid the occurrence of a blowing dead angle.

[0058] In summary, in the actual application of this embodiment, when the material transfer cover 401 carries the base and moves to the right and gradually approaches the material taking port 103, first, the inner right wall of the material transfer cover 401 blows air and the left side inhales air. After the material transfer cover 401 passes through the active rack 424, the inner right wall of the material transfer cover 401 inhales air and the left side blows air. It is worth mentioning that each time air is blown, the air exchange port 410 on the blowing side is blocked by the baffle plate 426, and the gas can only be blown out from the through hole 427. The advantage is that due to the small aperture of the through hole 427, the air flow rate can be increased, thereby blowing up the stubborn metal powder attached to the base and the surface of the product, and improving the thoroughness of the metal powder cleaning. At the same time, the blowing side and the suction side are always oppositely distributed, which is more conducive to the absorption of metal powder.

[0059] On the other hand, during the blowing process of the through hole 427, the lifting rods 431 on both sides of the corresponding baffle plate 426 will slide along the lifting ramp 106, so that the baffle plate 426 will slowly rise, and then the through hole 427 will slowly move upward, that is, changing the blowing direction and blowing range, thereby further avoiding the occurrence of blowing dead corners, which helps to further improve the thoroughness of metal powder cleaning.

[0060] Finally, when the material moving cover 401 moves to a position close to the material taking port 103, the air source is temporarily closed, and the two-way air cylinder 403 controls the two material moving pieces 404 to move away from each other, thereby releasing the substrate, and the external tool can extend into the powder suction box 100 through the material taking port 103 and take out the substrate. After the substrate is taken out, the powder cleaning robot 200 controls the air blowing pipe 201 and the air suction pipe 202 to extend into the interior of the molding cylinder, the air source is started, and the powder cleaning robot 200 carries the air blowing pipe 201 and the air suction pipe 202 to move along the gap path on the inner wall of the molding cylinder to clean the molding cylinder.

[0061] It is worth mentioning that the powder suction chassis 100 in this embodiment is arranged inside the metal powder 3D printing device, so the inside of the powder suction chassis 100 is also an argon environment, and during the entire powder cleaning process, the chassis hatch of the printing device is never opened, the role is to prevent the outside air from polluting the argon environment inside the chassis. In addition, it should be pointed out that after the external air source sucks away the metal powder and gas inside the powder suction chassis 100 through the suction pipe 202, it needs to be filtered and then the clean argon gas is returned to the inside of the powder suction chassis 100 through the blowing pipe 201.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A convenient 3D printing device powder suction machine, characterized in that: Including: A powder suction chassis (100), a powder cleaning port (101) for docking with a forming cylinder is opened at the bottom of the powder suction chassis (100), a powder dropping port (102) is opened at the right side of the bottom of the powder suction chassis (100), and a material taking port (103) is also opened on the right side wall of the powder suction chassis (100); A powder cleaning robotic arm (200), the powder cleaning robotic arm (200) is arranged inside the powder suction chassis (100), a blowing pipe (201) and a suction pipe (202) are arranged at the free end of the powder cleaning robotic arm (200), and the blowing pipe (201) and the suction pipe (202) are respectively connected to an external gas source through hoses; A material transferring robotic arm (300), the material transferring robotic arm (300) is arranged inside the powder suction chassis (100), a material transferring mechanism (400) is arranged at the free end of the material transferring robotic arm (300), and the material transferring mechanism (400) is used for clamping a substrate; Wherein, the material transferring mechanism (400) includes a material transferring cover (401), flow cavities (407) are opened on the left and right side walls of the material transferring cover (401), a first air cavity (408) and a second air cavity (409) are respectively opened on the left and right sides of the top wall of the material transferring cover (401), the first air cavity (408) and the second air cavity (409) are respectively communicated with the two flow cavities (407), air exchange ports (410) communicated with the flow cavities (407) are opened on the left and right side walls inside the material transferring cover (401), a first air hole (411) and a second air hole (412) are respectively opened on the left and right sides of the top surface of the material transferring cover (401), a rotating part (413) is rotatably arranged on the top surface of the material transferring mechanism (400), the rotating part (413) is in contact with the top surface of the material transferring mechanism (400), a third air hole (414) and a fourth air hole (415) are also opened at the bottom of the rotating part (413), and the third air hole (414) and the fourth air hole (415) are respectively communicated with the suction pipe (202) and the blowing pipe (201); When the third air hole (414) and the fourth air hole (415) are respectively aligned with the first air hole (411) and the second air hole (412), the air exchange ports (410) on the left and right sides of the inner wall of the material transferring cover (401) respectively suck air and blow air.

2. A convenient-to-use 3D printing device powder suction machine according to claim 1, characterized in that: The material transferring mechanism (400) includes a material transferring frame (402), the material transferring frame (402) is in a "冂" shape, a two-way cylinder (403) is arranged inside the material transferring frame (402), material transferring sheets (404) are respectively arranged on the front and rear sides outside the material transferring frame (402), two movable ends of the two-way cylinder (403) are respectively fixedly connected to the two material transferring sheets (404), clamping holes (405) are opened on the front and rear sides of the bottom of the material transferring cover (401), clamping columns (406) are arranged on the opposite surfaces of the two material transferring sheets (404), and the two clamping columns (406) both extend into the corresponding clamping holes (405).

3. A convenient-to-use 3D printing device powder suction machine according to claim 1, characterized in that: A positioning ring (416) is provided on the top surface of the material transfer cover (401); the positioning ring (416) is located outside the rotating part (413); and the positioning ring (416) and the rotating part (413) are rotatably matched via a bearing.

4. A convenient-to-use 3D printing device powder suction machine according to claim 3, characterized in that: A stabilizing portion (417) is fitted on the top surface of the rotating portion (413); the stabilizing portion (417) is fixedly connected to the positioning ring (416) via a connecting rod; an outer ring groove (418) and an inner ring groove (419) are formed on the inner bottom surface of the stabilizing portion (417); the outer ring groove (418) is connected to the third air hole (414); and the inner ring groove (419) is connected to the fourth air hole (415).

5. A convenient-to-use 3D printing device powder suction machine according to claim 4, characterized in that: The top surface of the stabilizing portion (417) is also provided with two air nozzles, the two air nozzles are respectively in communication with the outer annular groove (418) and the inner annular groove (419), and the two air nozzles are respectively used to connect with the air suction pipe (202) and the air blowing pipe (201).

6. A convenient-to-use 3D printing device powder suction machine according to claim 1, characterized in that: A rotating shaft (420) is rotatably provided on one side of the top surface of the material transfer cover (401), a first pulley (421) and a driven gear (423) are fixedly sleeved on the outside of the rotating shaft (420), a second pulley (422) is fixedly sleeved on the outside of the rotating portion (413), and the first pulley (421) and the second pulley (422) are connected via a synchronous belt; an active rack (424) matched with the driven gear (423) is provided on one side of the inner wall of the powder suction chassis (100), the active rack (424) is distributed along the moving path of the material transfer cover (401), and when the driven gear (423) moves with the material transfer cover (401) to the position of the active rack (424), it rotates 180 degrees under the action of the active rack (424).

7. A convenient-to-use 3D printing device powder suction machine according to claim 6, characterized in that: The left and right side walls of the material transfer cover (401) are further provided with interlayer cavities (425), the two interlayer cavities (425) are located on the inner sides of the two circulation cavities (407), and the interlayer cavities (425) and the circulation cavities (407) are communicated with each other through a ventilation port (410), and a liftable shielding plate (426) is movably provided inside the interlayer cavity (425), and a through hole (427) is provided on the shielding plate (426), and the aperture of the through hole (427) is smaller than the aperture of the ventilation port (410).

8. The easy-to-use 3D printing device powder suction machine according to claim 7, characterized in that: A permanent magnet (428) is provided at the top of the baffle plate (426), and an electromagnet (429) is provided at the top of the interlayer cavity (425). When the electromagnet (429) is powered on, the magnetic poles of the electromagnet (429) and the permanent magnet (428) facing each other are the same, the baffle plate (426) fits with the bottom end of the interlayer cavity (425), and the through hole (427) is aligned with the lower edge of the ventilation port (410); when the electromagnet (429) is powered off, the electromagnet (429) and the permanent magnet (428) attract each other, and the bottom end of the baffle plate (426) is aligned with the upper edge of the ventilation port (410).

9. A convenient-to-use 3D printing device powder suction machine according to claim 8, characterized in that: Conductive components (105) are staggeredly arranged on the front and rear side walls of the interior of the powder suction box (100) and on the left and right sides of the active rack (424), and the conductive components (105) are composed of two conductive copper sheets parallel to each other. A power supply (500) is also arranged outside the powder suction box (100), and the positive and negative electrodes of the power supply (500) are respectively connected to the two conductive copper sheets in the conductive component (105) through wires; two conductive contacts (430) are arranged on the front and rear sides of the top of the material transfer cover (401), and the two conductive contacts (430) are respectively connected to the two leads of the corresponding electromagnet (429), and the two conductive contacts (430) correspond to the two conductive copper sheets in the corresponding conductive component (105).

10. The easy-to-use 3D printing device powder suction machine according to claim 9, characterized in that: Lifting rods (431) are provided on both the front and rear sides of the top of the baffle plate (426), and movable openings (432) for the lifting rods (431) to pass through are opened on the front and rear side walls of the material transfer cover (401), and the movable openings (432) are distributed vertically; the front and rear side walls inside the powder suction box (100) are provided with lifting ramps (106) corresponding to the conductive component (105), and both ends of the lifting ramp (106) exceed both ends of the conductive component (105), and the height difference of the lifting ramp (106) is consistent with the height of the ventilation port (410).

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