An intelligent 3D printing powder cleaning device

Abstract

The present invention relates to the field of 3D printing technology, specifically to an intelligent 3D printing powder cleaning device, including a lifting mechanism and a molding cylinder arranged inside a molding chamber, wherein the movable end of the lifting mechanism is fixedly connected to the molding cylinder, a base is fixedly arranged inside the molding cylinder, and further comprising: a lifting and moving mechanism, an air supply mechanism, an air blowing mechanism, and an elastic component. The present invention designs the adsorption hood as a multi-layer structure composed of an inner and outer cover body, and then designs the inner cover body as a three-section structure with a rotatable middle part, so that when the adsorption hood is lifted and lowered back and forth, the air blowing mechanism can rotate back and forth, thereby making the blowing range wider, so as to blow out and clear away the residual powder in the gap or groove part, saving extra cleaning time.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to an intelligent 3D printing powder cleaning device. Background Art

[0002] 3D printing technology is a rapid prototyping technology that uses digital model files to construct objects by printing layer by layer. With the continuous advancement of technology and the continuous expansion of application areas, the scale of the 3D printing market will continue to grow. In the future, metal materials, personal consumption and industrial manufacturing will be the key development directions of 3D printing technology. At the same time, with the application of intelligent technology and the research and development of high-quality materials, 3D printing technology will achieve wider applications and higher production efficiency.

[0003] After the existing 3D printers are finished printing, a large amount of powder will be covered inside the molding chamber and on the surface of the workpiece. Therefore, before taking out the workpiece, it is necessary to clean the powder to prevent the powder from floating outside the molding chamber and polluting the external environment. The conventional way to clean the powder is manual cleaning. The specific process is: after the workpiece is printed, the powder cleaning staff wears an effective dust mask, protective glasses, anti-static wristband, anti-static gloves, and a full set of anti-static clothing, and transfers the molding cylinder and the workpiece in the cylinder from the equipment building chamber to the powder cleaning chamber, opens the door, and uses a vacuum cleaner to suck away the excess powder on the workpiece and in the cylinder. If there is residual powder in the slits or grooves, additional cleaning is required. Not only does it take a long time to clean the powder, but the metal powder is exposed to the air and there is a possibility of oxidation. At the same time, after the door is opened, the outside air will also enter the molding chamber, making the inert gas environment in the cabin ineffective, so there are certain safety hazards. To this end, we propose an intelligent 3D printing powder cleaning device to solve the above disadvantages well. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent 3D printing powder cleaning device to solve the problems raised in the above background technology.

[0005] The present invention is realized by the following technical scheme: an intelligent 3D printing powder cleaning device, comprising a lifting mechanism and a molding cylinder arranged inside a molding chamber, wherein the movable end of the lifting mechanism is fixedly connected to the molding cylinder, and a base is arranged inside the molding cylinder, and further comprising:

[0006] A lifting and moving mechanism, wherein the lifting and moving mechanism is arranged in the molding cabin, the movable end of the lifting and moving mechanism is connected with an adsorption cover, the adsorption cover is located directly above the molding cylinder, and the adsorption cover is used to cover the top of the molding cylinder, the adsorption cover includes an outer cover body and an inner cover body, the inner cover body is fixedly arranged inside the outer cover body, and the gap between the outer cover body and the inner cover body constitutes a blowing cavity;

[0007] An air supply mechanism, wherein the air blowing end of the air supply mechanism is connected to the air blowing cavity, and the air suction end of the air supply mechanism is connected to the interior of the inner cover body;

[0008] A blowing mechanism, which is arranged inside the inner cover body, is rotatably connected to the outer cover body, is communicated with the blowing cavity, and is used to blow air into the forming cylinder;

[0009] An elastic component, wherein the number of the elastic components is several, and the several elastic components are arranged in a circle inside the adsorption cover. The elastic component can act on the upper end of the forming cylinder, and the elastic component is slidably matched with the blowing mechanism. When the elastic component reciprocates up and down relative to the outer cover body, it can drive the blowing mechanism to reciprocate.

[0010] Optionally, the bottom cross-section of the outer cover body is square, the bottom cross-section of the inner cover body is annular, the inner cover body is a three-section structure consisting of an upper cover body, an intermediate cover body and a lower cover body, the upper cover body and the lower cover body are both fixedly connected to the outer cover body, the intermediate cover body is rotatably connected to the upper cover body and the lower cover body, and the blowing mechanism is fixedly connected to the intermediate cover body.

[0011] Optionally, the elastic component is arranged in the blowing cavity, and the elastic component includes a fixed plate, which is fixedly connected to the inner wall of the outer cover body, and a first spring is fixedly provided on the lower surface of the fixed plate. A movable plate is provided at one end of the first spring away from the fixed plate, and the movable plate is used to contact the upper surface of the forming cylinder.

[0012] Optionally, the blowing mechanism includes an outer tube body, which is in the shape of a cross four-way tube, the four ends of the outer tube body are fixedly connected to the inner wall of the middle cover body of the inner cover body, the bottom wall of the outer tube body is provided with external blowing holes around and close to the end positions, the bottom wall of the outer tube body is provided with internal blowing holes around and away from the end positions, the four end tubes of the outer tube body are internally provided with a second spring and an inner tube body, the four end tubes of the outer tube body are internally provided with annular flanges near the middle part, the two ends of the second spring are respectively abutted against the corresponding annular flanges and the inner tube body, and the inner tube body is provided with connecting holes corresponding to the external blowing holes one by one; in a natural state, the second spring is in a compressed state.

[0013] Optionally, an air inlet hole is provided at one end of the inner tube body extending to the outside of the inner cover body, and a slider is rotatably connected to the outer end of the inner tube body. There are four elastic components, and the four elastic components correspond to the four inner tube bodies respectively, and the slider is slidably connected to the corresponding movable plate.

[0014] Optionally, a sliding groove is provided on a side of the movable plate facing the inner cover body, and the slider is slidably connected in the sliding groove, and the sliding groove includes an oblique groove and a vertical groove, and the depth of the vertical groove is greater than the depth of the oblique groove; when the slider is located in the oblique groove, the external air blowing holes and the connecting holes are aligned and distributed, and when the slider is located in the vertical groove, the external air blowing holes and the connecting holes are staggered and distributed, and the internal air blowing holes are in an open state.

[0015] Optionally, a baffle is fixedly provided on the inner side of the bottom of the outer cover body, the upper surface of the baffle is fixedly connected to the inner cover body, a plurality of through slots for the movable plate to pass through are formed on the baffle, and the plurality of through slots are arranged at intervals along the circumferential direction.

[0016] Optionally, the movable plate is an arc-shaped plate structure, and the centers of circles corresponding to a number of the movable plates coincide with the central axis of the inner cover body; when the movable plate slides up and down in the through groove, the movable plate and the through groove maintain a sealed fit.

[0017] Optionally, an air inlet pipe and an air outlet pipe are fixedly provided on the outer cover body, the air inlet pipe is communicated with the blowing cavity, and the air outlet pipe is communicated with the interior of the inner cover body.

[0018] Optionally, the air supply mechanism includes a powder suction filter and an air storage tank, the air suction end of the powder suction filter and the air outlet pipe are connected via a pipe, the discharge end at the bottom of the powder suction filter is connected to a powder tank, the air outlet end of the powder suction filter is connected to a circulating pump, the blowing end of the circulating pump and the air outlet end of the air storage tank are both connected to the air inlet pipe via a pipe, and the gas in the air storage tank is an inert gas.

[0019] Compared with the prior art, the present invention provides an intelligent 3D printing powder cleaning device, which has the following beneficial effects:

[0020] 1. The present invention designs the adsorption cover as a multi-layer structure consisting of an inner and outer cover body, and then designs the inner cover body as a three-section structure with a rotatable middle part, so that when the adsorption cover is reciprocated and lifted, the blowing mechanism can reciprocate, thereby making the blowing range wider, so as to blow out and remove the residual powder in the gap or groove part, thereby improving the cleaning efficiency;

[0021] 2. The present invention provides an inner tube body connected by a spring inside the outer tube body of the blowing mechanism, so that when the slider moves in the oblique groove, the outer blowing hole first blows air around the workpiece, and when the slider moves into the vertical groove, the inner blowing hole blows air to the middle of the workpiece, further expanding the blowing range. At the same time, the powder cleaning sequence of first outside and then inside can make the workpiece clean more comprehensively and avoid metal powder remaining in the dead corner inside the workpiece;

[0022] 3. The present invention can realize automatic sealed powder cleaning, so that the metal powder will not be exposed to the air, and the operation is always carried out in an inert gas environment, thereby improving the safety of the operation. At the same time, the automatic powder cleaning operation also improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall planar structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the front cross-sectional structure of the adsorption cover of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the outer cover of the present invention;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the inner cover body of the present invention;

[0027] Figure 5 It is a schematic diagram of the overall structure of the blowing mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the exploded structure of the blowing mechanism of the present invention;

[0029] Figure 7 It is a cross-sectional view of the blowing mechanism of the present invention.

[0030] In the figure: 1. lifting mechanism; 101. lifting and moving mechanism; 2. forming cylinder; 201. base; 3. adsorption cover; 301. outer cover body; 302. inner cover body; 303. air inlet pipe; 304. air outlet pipe; 4. elastic component; 401. fixed plate; 402. first spring; 403. movable plate; 5. blowing mechanism; 501. outer tube body; 502. outer blowing hole; 503. inner blowing hole; 504. second spring; 505. inner tube body; 506. annular flange; 507. connecting hole; 508. air inlet hole; 6. baffle; 601. through groove; 7. slider; 8. slide groove; 801. oblique groove; 802. vertical groove; 9. air supply mechanism; 901. powder suction filter; 902. powder tank; 903. circulation pump; 904. gas storage tank. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1 - Figure 7An intelligent 3D printing powder cleaning device includes a lifting mechanism 1 and a molding cylinder 2 arranged inside a molding chamber, wherein the movable end of the lifting mechanism 1 is fixedly connected to the molding cylinder 2, and a base 201 is provided in the molding cylinder 2, so that the lifting mechanism 1 can control the molding cylinder 2 to rise to a certain height, thereby bringing the base 201 and the printed workpiece to the powder cleaning table for powder cleaning operation.

[0033] Furthermore, a lifting and moving mechanism 101 is also provided in the molding chamber, and the movable end of the lifting and moving mechanism 101 is connected to the adsorption hood 3, the adsorption hood 3 is located directly above the molding cylinder 2, and the adsorption hood 3 is used to cover the top of the molding cylinder 2, so that the lifting and moving mechanism 101 can control the adsorption hood 3 to move to the position of the molding cylinder 2; specifically, the lifting and moving mechanism 101 can adopt a linear drive mechanism, such as a cylinder, to directly control the adsorption hood 3 to perform lifting and lowering movements.

[0034] It should be noted that when performing the 3D printing operation, the forming cylinder 2 is not located directly below the adsorption hood 3, so that the laser beam emitted by the laser generating mechanism on the top of the forming chamber can reach the base 201 normally. When the printing operation is completed, the electric actuator (not shown in the figure) in the forming chamber controls the lifting mechanism 1 and the forming cylinder 2 to move horizontally to the top of the adsorption hood 3, and then the powder cleaning operation is performed.

[0035] The structure of the adsorption cover 3 is described below:

[0036] The adsorption cover 3 includes an outer cover body 301 and an inner cover body 302. The inner cover body 302 is fixedly arranged inside the outer cover body 301, and the gap between the outer cover body 301 and the inner cover body 302 constitutes an air blowing cavity, and the bottom cross-section of the outer cover body 301 is square, so that the outer cover body 301 can correspond to the shape of the forming cylinder 2. When the adsorption cover 3 moves to the position of the forming cylinder 2, the outer cover body 301 is slidably covered on the outside of the forming cylinder 2, and the inner wall of the outer cover body 301 and the outer wall of the forming cylinder 2 are sealed and fitted, so that the powder cleaning work can be carried out in a sealed environment, thereby reducing the operation risk.

[0037] Furthermore, an air inlet pipe 303 and an air outlet pipe 304 are provided on the outer cover body 301, the air inlet pipe 303 is communicated with the air blowing cavity, and the air outlet pipe 304 is communicated with the inside of the inner cover body 302. This embodiment also includes an air supply mechanism 9, and the air inlet pipe 303 and the air outlet pipe 304 are respectively connected to the air blowing end and the air suction end of the air supply mechanism 9. The powder cleaning operation in the inner cover body 302 can be performed in the cycle of air suction and air blowing, thereby improving the powder cleaning effect.

[0038] The structure of the air supply mechanism 9 is described below:

[0039] The air supply mechanism 9 includes a powder suction filter 901 and an air storage tank 904. The air suction end of the powder suction filter 901 and the air outlet pipe 304 are connected through a pipeline. The discharge end at the bottom of the powder suction filter 901 is connected to the powder tank 902. The air outlet end of the powder suction filter 901 is connected to the circulation pump 903. The blowing end of the circulation pump 903 and the air outlet end of the air storage tank 904 are both connected to the air inlet pipe 303 through a pipeline. The gas in the air storage tank 904 is an inert gas, so that the gas can stably circulate in the pipeline and at the same time, the powder is cleaned in the inert gas, thereby reducing the risk of operation.

[0040] Furthermore, a blowing mechanism 5 is also provided inside the adsorption hood 3, and the blowing mechanism 5 includes an outer tube body 501, and the outer tube body 501 is in the shape of a cross four-way tube, and the outer tube body 501 is fixedly connected to the inner wall of the inner hood body 302, and external blowing holes 502 are provided around the bottom wall of the outer tube body 501 and near the end position, and internal blowing holes 503 are provided around the bottom wall of the outer tube body 501 and away from the end position, and the external blowing holes 502 and the internal blowing holes 503 correspond to the surrounding and middle of the inner cavity of the forming cylinder 2 respectively, so that the blowing mechanism 5 can perform blowing and powder cleaning operations on each position of the inner cavity of the forming cylinder 2. The four end tubes of the outer tube body 501 are each provided with a second spring 504 and an inner tube body 505. The four end tubes of the outer tube body 501 are each provided with an annular flange 506 near the middle. The two ends of the second spring 504 are respectively abutted against the annular flange 506 and the inner tube body 505. The inner tube body 505 is provided with a connecting hole 507 corresponding to the outer blowing hole 502. In a natural state, the second spring 504 is in a compressed state. At the same time, an air inlet hole 508 is provided at one end of the inner tube body 505 extending to the outside of the inner cover body 302, so that the gas between the outer cover body 301 and the inner cover body 302 can enter the blowing mechanism 5 from the air inlet hole 508.

[0041] It should be noted that the outer surface of the inner tube body 505 is also provided with convex ridges distributed along the axial direction, and the inner surface of the outer tube body 501 is provided with grooves (not shown in the figure) that are compatible with the convex ridges. The inner tube body 505 slides with the outer tube body 501 through the convex ridges. Therefore, the inner tube body 505 can slide relatively in the axial direction, but cannot produce relative torsion between the inner tube body 505 and the outer tube body 501.

[0042] This embodiment also includes an elastic component 4, there are four elastic components 4, and the four elastic components 4 are arranged in a circle inside the adsorption cover 3, the elastic component 4 can act on the upper end of the forming cylinder 2, the elastic component 4 and the blowing mechanism 5 are slidably matched, and when the elastic component 4 reciprocates up and down relative to the outer cover body 301, the blowing mechanism 5 can be driven to reciprocate.

[0043] Specifically, the four elastic components 4 correspond to the four inner tubes 505 respectively, and the elastic component 4 includes a fixed plate 401, which is fixedly connected to the inner wall of the outer cover body 301, and a first spring 402 is fixedly provided on the lower surface of the fixed plate 401, and a movable plate 403 is fixedly provided on the bottom end of the first spring 402. The movable plate 403 is used to contact the upper surface of the forming cylinder 2, so that when the outer cover body 301 moves downward on the outside of the forming cylinder 2, the movable plate 403 will touch the upper surface of the forming cylinder 2, thereby being blocked from continuing to descend, so that the movable plate 403 can be relatively static during the overall descent of the adsorption cover 3.

[0044] Furthermore, the outer end of the inner tube body 505 is also rotatably connected to a slider 7, and the slider 7 is slidably connected to the movable plate 403. A slide groove 8 is provided on the side of the movable plate 403 facing the inner cover body 302. The slider 7 is slidably connected in the slide groove 8. The slide groove 8 includes an oblique groove 801 and a vertical groove 802, and the depth of the vertical groove 802 is greater than the depth of the oblique groove 801. At the same time, the depth of the vertical groove 802 gradually deepens from top to bottom, that is, the connection between the oblique groove 801 and the vertical groove 802 is composed of a smooth inclined surface, so that the slider 7 can move smoothly in the slide groove 8.

[0045] In addition, when the slider 7 is located inside the oblique groove 801, the outer air blowing hole 502 and the connecting hole 507 are aligned, and the inner air blowing hole 503 is blocked by the inner tube body 505 and is in a closed state; when the slider 7 is located inside the vertical groove 802, the outer air blowing hole 502 and the connecting hole 507 are staggered, and the inner air blowing hole 503 is no longer blocked by the inner tube body 505 and is in an open state.

[0046] Specifically, during the descending process of the adsorption hood 3, when the movable plate 403 contacts the forming cylinder 2 and is blocked by its top wall from descending, the inner cover body 302 will drive the blowing mechanism 5 to continue to descend, and the inner tube body 505 extending to the slider 7 on the outer end of the inner cover body 302 will move from top to bottom in the oblique groove 801. Since the inner cover body 302 is a three-section structure consisting of an upper cover body, an intermediate cover body and a lower cover body, the upper and lower covers of the inner cover body 302 are fixedly connected to the outer cover body 301, the intermediate cover body of the inner cover body 302 is rotatably connected to the upper and lower covers, and the blowing mechanism 5 is fixedly connected to the intermediate cover body of the inner cover body 302. Therefore, the slider 7 will drive the inner tube body 505 to rotate a certain angle, thereby driving the blowing mechanism 5 to rotate a certain angle, thereby changing the position of the outer blowing hole 502, so that the outer blowing hole 502 can blow air in a wider range, thereby improving the powder cleaning effect.

[0047] When the slider 7 moves into the vertical groove 802, since the depth of the vertical groove 802 is greater than the depth of the oblique groove 801, the second spring 504 in the outer tube body 501 will pop the inner tube body 505 outward, so that the outer blowing hole 502 is blocked by the inner tube body 505, and the inner blowing hole 503 is opened, thereby realizing the operation of blowing air in the middle of the forming cylinder 2. By blowing air from the outside to the inside first, the metal powder attached to the printed workpiece blown away by the outer blowing hole 502 can be further cleaned, thereby completing the final cleaning operation. Through the cycle process of blowing and sucking air in the forming cylinder 2, the powder cleaning is more comprehensive and quick.

[0048] In some embodiments of the present application, a baffle 6 is fixedly provided on the inner wall of the outer cover 301, and the baffle 6 is also fixedly connected to the bottom of the inner cover 302, so that a closed cavity can be formed between the outer cover 301 and the inner cover 302, and a circumferentially arranged through grooves 601 are provided on the baffle 6, and the through grooves 601 and a plurality of movable plates 403 slide in correspondence one by one. The movable plate 403 is an arc-shaped plate-like structure, and the center of the circle corresponding to the movable plate 403 coincides with the central axis of the inner cover 302, so that when the slider 7 moves in the oblique groove 801, the inner tube 505 and the outer tube 501 can remain relatively still, so that the outer blowing hole 502 and the connecting hole 507 can always communicate. When the movable plate 403 slides up and down in the through groove 601, the movable plate 403 and the through groove 601 are sealed and fitted to prevent leakage of metal powder and inert gas, thereby improving safety.

[0049] The working principle and usage process of the present invention are as follows: first, after printing is completed, the electric actuator in the molding cabin will control the molding cylinder 2 and the lifting mechanism 1 to move to the position directly below the adsorption cover 3. The molding cylinder 2 in the molding cabin is controlled by the lifting mechanism 1 to move up to the powder cleaning table. At this time, after detecting that the molding cylinder 2 is in place, the lifting and moving mechanism 101 will control the adsorption cover 3 to start descending until the sealing cover is on the molding cylinder 2. At this time, the outer cover body 301 is a sliding cover set on the side wall of the molding cylinder 2.

[0050] Subsequently, the air supply mechanism 9 delivers the inert gas into the blowing cavity between the outer cover body 301 and the inner cover body 302 through the air inlet pipe 303, and at the same time controls the adsorption cover 3 to perform slow lifting and reciprocating motion through the lifting and moving mechanism 101. Specifically, during the slow downward sliding of the outer cover body 301, when the movable plate 403 is driven to contact the top wall of the forming cylinder 2, the outer cover body 301 continues to descend, and the movable plate 403 will be blocked, thereby compressing the first spring 402; at this time, the movable plate 403 is in a relatively static state, and the inner cover body 302 will still move downward, so the slider 7 in the slide groove 8 will slide downward in the oblique groove 801, and as the height decreases, the slider 7 will drive the blowing mechanism 5 to move from the top of the oblique groove 801 to the bottom. In this process, the connecting hole 507 on the inner tube body 505 will be connected to the outer blowing hole 502 on the outer tube body 501, and the inner blowing hole 503 on the outer tube body 501 will be blocked by the inner tube body 505. Therefore, the gas will enter the blowing mechanism 5 from the air inlet hole 508, and then be blown out from the outer tube body 501 around it, so as to blow air to the periphery of the printed workpiece. At the same time, because the blowing mechanism 5 is driven by the slider 7, it will rotate a certain angle in the adsorption cover 3, so that the blowing range is wider and the powder cleaning effect is improved.

[0051] That is, as the adsorption cover 3 performs lifting and reciprocating motions, the slider 7 also performs reciprocating motions in the oblique groove 801, thereby driving the blowing mechanism 5 to rotate reciprocatingly to increase the blowing range. At the same time, since the outer blowing hole 502 is located at the outer edge of the base 201, and the air outlet pipe 304 is located at the top middle position of the outer cover body 301, under the action of the airflow, the powder on the surface of the base 201 will gather to the middle with the airflow, and then be discharged from the air outlet pipe 304.

[0052] When the slider 7 slides into the vertical groove 802, due to the gradual increase in the depth of the vertical groove 802, the second spring 504 will pop the inner tube body 505 outward, thereby misaligning the outer blowing hole 502 and the connecting hole 507, blocking the outer blowing hole 502, while the inner blowing hole 503 will be exposed, thereby achieving blowing on the middle part of the workpiece. By cleaning from the outside to the inside, the cleaning force on the printed workpiece is improved, and metal powder blown from all sides is prevented from adhering to the printed workpiece.

[0053] Specifically, when the slider 7 is located inside the vertical groove 802, the air flow blows downward from the middle, which can make the powder in the middle of the surface of the base 201 diffuse outward and then be discharged from the air outlet pipe 304 to avoid the metal powder adhering to the dead corner in the middle of the workpiece.

[0054] In summary, there are two powder cleaning methods in this embodiment. The first method is to blow air through the outer blowing hole 502 to gather the powder in the middle; the second method is to blow air through the inner blowing hole 503 to spread the powder outward. In the first method, the blowing mechanism 5 rotates back and forth, which can increase the blowing area and achieve large-scale cleaning. In the second method, the blowing mechanism 5 is closer to the base 201, the blowing intensity is greater, and the airflow is more concentrated, which is conducive to deep cleaning and thorough cleaning of stubborn powder attached to the workpiece and powder in dead corners that are difficult to clean.

[0055] It should be noted that, in this article, the terms "include", "comprises" or any other variations 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 includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0056] 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. An intelligent 3D printing powder cleaning device, comprising a lifting mechanism (1) and a molding cylinder (2) arranged inside a molding chamber, wherein the movable end of the lifting mechanism (1) is fixedly connected to the molding cylinder (2), and a base (201) is arranged inside the molding cylinder (2), characterized in that: Also includes: A lifting and moving mechanism (101), the lifting and moving mechanism (101) being arranged in a molding chamber, a movable end of the lifting and moving mechanism (101) being connected to an adsorption cover (3), the adsorption cover (3) being located directly above the molding cylinder (2), and the adsorption cover (3) being used to cover the top of the molding cylinder (2), the adsorption cover (3) comprising an outer cover body (301) and an inner cover body (302), the inner cover body (302) being fixedly arranged inside the outer cover body (301), and a gap between the outer cover body (301) and the inner cover body (302) forming a blowing cavity; An air supply mechanism (9), wherein an air blowing end of the air supply mechanism (9) is in communication with the air blowing cavity, and an air suction end of the air supply mechanism (9) is in communication with the interior of the inner cover body (302); A blowing mechanism (5), the blowing mechanism (5) being arranged inside the inner cover body (302), the blowing mechanism (5) being rotatably connected to the outer cover body (301), the blowing mechanism (5) being in communication with the blowing cavity, and the blowing mechanism (5) being used to blow air into the forming cylinder (2); An elastic component (4), wherein the number of the elastic components (4) is several, and the several elastic components (4) are arranged in a circular pattern inside the adsorption cover (3); the elastic component (4) can act on the upper end of the forming cylinder (2), and the elastic component (4) is slidably matched with the blowing mechanism (5); when the elastic component (4) reciprocates up and down relative to the outer cover body (301), it can drive the blowing mechanism (5) to reciprocate; The bottom cross-section of the outer cover body (301) is square, the bottom cross-section of the inner cover body (302) is annular, the inner cover body (302) is a three-section structure consisting of an upper cover body, an intermediate cover body and a lower cover body, the upper cover body and the lower cover body are both fixedly connected to the outer cover body (301), the intermediate cover body is rotatably connected to the upper cover body and the lower cover body, and the blowing mechanism (5) is fixedly connected to the intermediate cover body; The elastic component (4) is arranged in the blowing cavity, and the elastic component (4) comprises a fixed plate (401), the fixed plate (401) is fixedly connected to the inner side wall of the outer cover (301), a first spring (402) is fixedly arranged on the lower surface of the fixed plate (401), and a movable plate (403) is arranged at one end of the first spring (402) away from the fixed plate (401), and the movable plate (403) can act on the upper end of the forming cylinder (2); The blowing mechanism (5) comprises an outer tube body (501), the outer tube body (501) is in the shape of a cross-shaped four-way tube, the four ends of the outer tube body (501) are fixedly connected to the inner wall of the middle cover body (302), the bottom wall of the outer tube body (501) is provided with external blowing holes (502) around and near the end, the bottom wall of the outer tube body (501) is provided with internal blowing holes (503) around and away from the end, and the four end tubes of the outer tube body (501) are provided with a plurality of external blowing holes (502) at the bottom wall of the outer tube body (501). A second spring (504) and an inner tube body (505) are arranged inside the outer tube body (501). The four end tubes of the outer tube body (501) are provided with an annular flange (506) inside and near the middle part. The two ends of the second spring (504) are respectively abutted against the corresponding annular flange (506) and the inner tube body (505). The inner tube body (505) is provided with a connecting hole (507) corresponding to the external air blowing hole (502) one by one. In a natural state, the second spring (504) is in a compressed state.

2. The intelligent 3D printing powder cleaning device according to claim 1, characterized in that: An air inlet hole (508) is provided at one end of the inner tube body (505) extending to the outside of the inner cover body (302); a slider (7) is rotatably connected to the outer end of the inner tube body (505); there are four elastic components (4), and the four elastic components (4) correspond to the four inner tube bodies (505) respectively; and the slider (7) is slidably connected to the corresponding movable plate (403).

3. The intelligent 3D printing powder cleaning device according to claim 2, characterized in that: A sliding groove (8) is provided on a surface of the movable plate (403) facing the inner cover body (302), and the slider (7) is slidably connected in the sliding groove (8), and the sliding groove (8) comprises an oblique groove (801) and a vertical groove (802), and the depth of the vertical groove (802) is greater than the depth of the oblique groove (801); when the slider (7) is located inside the oblique groove (801), the external air blowing hole (502) and the connecting hole (507) are aligned and distributed; when the slider (7) is located inside the vertical groove (802), the external air blowing hole (502) and the connecting hole (507) are staggered and distributed, and the internal air blowing hole (503) is in an open state.

4. The intelligent 3D printing powder cleaning device according to claim 3, characterized in that: A baffle (6) is fixedly provided on the inner side of the bottom of the outer cover (301); the upper surface of the baffle (6) is fixedly connected to the inner cover (302); a plurality of through slots (601) for the movable plate (403) to pass through are formed on the baffle (6); and the plurality of through slots (601) are arranged at intervals along the circumferential direction.

5. The intelligent 3D printing powder cleaning device according to claim 4, characterized in that: The movable plate (403) is an arc-shaped plate structure, and the centers of circles corresponding to a plurality of the movable plates (403) coincide with the central axis of the inner cover body (302); when the movable plate (403) slides up and down in the through groove (601), the movable plate (403) and the through groove (601) maintain a sealed fit.

6. The intelligent 3D printing powder cleaning device according to claim 1, characterized in that: An air inlet pipe (303) and an air outlet pipe (304) are fixedly provided on the outer cover body (301); the air inlet pipe (303) is in communication with the air blowing cavity, and the air outlet pipe (304) is in communication with the interior of the inner cover body (302).

7. The intelligent 3D printing powder cleaning device according to claim 6, characterized in that: The air supply mechanism (9) comprises a powder suction filter (901) and an air storage tank (904); the air suction end of the powder suction filter (901) and the air outlet pipe (304) are connected via a pipeline; the discharge end at the bottom of the powder suction filter (901) is connected to a powder tank (902); the air outlet end of the powder suction filter (901) is connected to a circulation pump (903); the air blowing end of the circulation pump (903) and the air outlet end of the air storage tank (904) are both connected to the air inlet pipe (303) via a pipeline; and the gas in the air storage tank (904) is an inert gas.

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