A powder material quick cleaning device based on 3D printing equipment

Abstract

The present invention relates to the technical field of metal 3D printing, and specifically to a powder quick cleaning device based on 3D printing equipment, comprising a powder absorption hood, a displacement driving mechanism, and a powder filter. The powder absorption hood is movably arranged inside the 3D printing equipment, and an air outlet pipe and an air inlet pipe are arranged on the top of the powder absorption hood; the displacement driving mechanism is arranged inside the 3D printing equipment, and is used to drive the powder absorption hood to move in the vertical direction and the horizontal direction; the air inlet end of the powder filter is connected to the air outlet pipe on the top of the powder absorption hood through a pipeline; the present invention arranges a powder absorption hood inside a chassis of the 3D printing equipment, and the powder absorption hood is used to cover the outside of a forming cylinder, and at the same time cooperates with a vacuum pump and a powder filter outside the chassis, so as to effectively absorb metal powder inside the forming cylinder and on the upper surface of a base, without manual cleaning, thereby greatly improving the powder cleaning efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of metal 3D printing, and in particular to a powder material quick cleaning device based on 3D printing equipment. Background Art

[0002] Metal 3D printing equipment is a new type of equipment based on 3D printing technology, which mainly includes laser optical path system, galvanometer scanning system, powder spreading system, gas circulation system and chassis. Its principle is to use laser beam to fuse metal powder into shape, thus forming complex metal products.

[0003] After the existing metal 3D printing equipment is operated, there is a lot of metal powder on the surface of the base and the gap between the base and the forming cylinder. Therefore, when taking the material, the metal powder needs to be cleaned to avoid the metal powder being brought out of the chassis. The existing operation method is manual cleaning. The specific operation process is that 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, opens the door, and uses a vacuum cleaner to suck away excess powder on the workpiece and in the cylinder. If there is residual powder in the slits or grooves, additional cleaning is required.

[0004] The above manual powder cleaning method is obviously troublesome to operate and time-consuming. At the same time, since the metal powder is exposed to the air, there is also a risk of oxidation and powder floating outside the chassis. In view of this, we propose a powder quick cleaning device based on 3D printing equipment to effectively solve the above disadvantages. Summary of the invention

[0005] The purpose of the present invention is to provide a powder quick cleaning device based on 3D printing equipment, which is used to solve the problems raised in the above background technology.

[0006] The present invention is realized by the following technical scheme: a powder material quick cleaning device based on 3D printing equipment, comprising:

[0007] A powder absorption cover, which is movably arranged inside the 3D printing device, and an air outlet pipe and an air inlet pipe are arranged on the top of the powder absorption cover;

[0008] A displacement driving mechanism, which is disposed inside the 3D printing device and is used to drive the powder absorbing cover to move in the vertical direction and the horizontal direction;

[0009] A powder filter, the air inlet end of the powder filter is connected to the air outlet pipe through a pipeline;

[0010] A vacuum pump, wherein the air inlet end of the vacuum pump is connected to the air outlet end of the powder filter through a pipeline, and the air outlet end of the vacuum pump is connected to the air inlet pipe through a pipeline;

[0011] An argon gas source, and an air outlet end of the argon gas source is also connected to the intake pipe through a pipeline;

[0012] Wherein, an inner layer cover is arranged inside the powder absorption cover, a gap between the inner layer cover and the powder absorption cover forms a powder absorption cavity, the air outlet pipe is arranged on the top wall of the powder absorption cover and communicates with the inside of the powder absorption cover, an inner end of the intake pipe passes through a side wall of the powder absorption cover and extends into the powder absorption cavity, and powder absorption openings are formed around the side wall of the inner layer cover; in a first state, the air outlet pipe communicates with the inside of the inner layer cover, and the intake pipe communicates with the powder absorption cavity; in a second state, the air outlet pipe communicates with the powder absorption cavity, and the intake pipe communicates with the inside of the inner layer cover.

[0013] Optionally, an upper partition board and a lower partition board are arranged on an inner side of a top of the inner layer cover, an air suction pipe is jointly arranged through the upper partition board and the lower partition board, a first electromagnetic valve is arranged on the air suction pipe, a through hole is further formed in the lower partition board, a communicating pipe penetrates through a top wall of the inner layer cover and is located above the upper partition board, one end of the communicating pipe extends into the powder absorption cavity, and a second electromagnetic valve is further arranged on the communicating pipe; one end of the intake pipe extending into the powder absorption cavity is connected with a first air blowing pipe and a second air blowing pipe, the first air blowing pipe penetrates through a side wall of the top of the inner layer cover and extends between the upper partition board and the lower partition board, and a third electromagnetic valve and a fourth electromagnetic valve are respectively arranged on the first air blowing pipe and the second air blowing pipe.

[0014] Optionally, the displacement driving mechanism comprises a first driving component and a displacement part which are distributed vertically, the first driving component is fixedly arranged on an inner wall of the 3D printing device, a movable end of the first driving component is connected with the displacement part, a mounting frame in a shape of a "匚" is arranged on the displacement part, second driving components distributed horizontally are arranged on both outer sides of the mounting frame, a mounting plate is arranged inside the mounting frame, two side edges of the mounting plate are respectively connected with movable ends of the two second driving components, and the powder absorption cover is fixedly connected with the mounting plate.

[0015] Optionally, inner plate bodies covering outer sides of the powder absorption openings are respectively attached to four circumferences of the outer side of the inner layer cover, outer plate bodies are attached to outer surfaces of the inner plate bodies, pipe penetrating openings are formed in the inner plate bodies, a plurality of sheaths are formed in the outer plate bodies in a penetrating manner, one end of each sheath is located in the powder absorption cavity, and the other end passes through the pipe penetrating opening and the powder absorption opening and extends into the inner layer cover.

[0016] Optionally, the inner ends of several of the sheaths are provided with connecting blocks, and a pipe clamp is fixedly provided on the connecting block. An air supply pipe is commonly provided on the inner sides of several of the pipe clamps located on the same side. The air supply pipe and the pipe clamp are rotatably fitted through bearings. A nozzle is also provided on the outer surface of the air supply pipe. A hose is inserted into the interior of the sheath, and one end of the hose is connected to the air supply pipe.

[0017] Optionally, the inner plate body and the outer wall of the sandwich cover are slidably fitted in the horizontal direction, and the outer plate body and the inner plate body are slidably fitted in the vertical direction. A displacement frame is also sleeved on the outer side of the bottom of the sandwich cover, and the outer plate body and the displacement frame are slidably fitted in their own length direction. A vertical rod is also provided at the bottom end of the displacement frame, and the bottom end of the vertical rod is movable through the bottom wall of the sandwich cover.

[0018] Optionally, an S-shaped guide groove is provided on the outer walls of the interlayer cover and below the powder suction port, and a guide block for inserting into the guide groove is provided on the inner surface of the outer plate body; when the sleeve contacts the inner bottom side of the tube opening, the top end of the outer plate body is lower than the upper edge of the tube opening.

[0019] Optionally, both ends of the air supply pipe are fixedly mounted with driven gears, and the inner surface of the inner plate body and the two sides of the pipe opening are provided with racks distributed vertically, the driven gears and the racks correspond one to one, and the driven gears are meshed with the corresponding racks.

[0020] Optionally, the outer surface of the interlayer cover is provided with horizontal slide grooves distributed along the horizontal direction, the outer surface of the inner plate body is provided with vertical slide grooves distributed along the vertical direction, the inner surface of the inner plate body is provided with horizontal sliding blocks matching with the horizontal slide grooves, and the inner surface of the outer plate body is provided with vertical sliding blocks matching with the vertical slide grooves.

[0021] Optionally, the powder filter adopts a bag dust collector, and a powder dropping tank is provided at the bottom dust outlet of the powder filter.

[0022] Compared with the prior art, the present invention provides a powder quick cleaning device based on 3D printing equipment, which has the following beneficial effects:

[0023] 1. The present invention arranges a powder absorption cover inside the chassis of the 3D printing device, and the powder absorption cover is used to cover the outside of the forming cylinder. At the same time, it cooperates with the vacuum pump and powder filter outside the chassis to effectively absorb the metal powder inside the forming cylinder and on the surface of the base, without manual cleaning, which greatly improves the powder cleaning efficiency;

[0024] 2. The powder absorption cover of the present invention has an air jet component and an air suction component inside, wherein the air jet component is used to blow air to the upper surface of the base to make the powder float, and the air suction component is used to suck away the argon gas containing the metal powder, thereby improving the thoroughness of powder cleaning;

[0025] 3. The powder absorption cover of the present invention has a sandwich cover inside, and the gas can be blown downward from the top of the sandwich cover or from the side of the sandwich cover, so that there is no dead angle for blowing, and the thoroughness of powder cleaning is improved;

[0026] 4. In the present invention, the powder absorption hood also has a movable inner plate and outer plate inside. With the relative displacement of the powder absorption hood and the forming cylinder, the inner plate and the outer plate can produce corresponding displacement, thereby moving the air supply pipe along an S-shaped path and causing the nozzle to tilt upward and rotate, thereby further improving the uniformity of the jet and avoiding the occurrence of jet dead angles. 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 a schematic diagram of the displacement driving mechanism of the present invention;

[0029] Figure 3 This is a cross-sectional view of the powder absorption cover structure of the present invention;

[0030] Figure 4 It is a cross-sectional view of the powder absorption cover of the present invention in another state;

[0031] Figure 5 It is a schematic diagram of the structure of the sandwich cover of the present invention;

[0032] Figure 6 It is a schematic diagram of another state of the sandwich cover of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the inner plate body and the outer plate body of the present invention;

[0034] Figure 8 This is a schematic diagram of the gas supply pipe structure of the present invention;

[0035] Fig. 9 for Figure 3 The corresponding figure at A is enlarged;

[0036] Fig.10 for Figure 4 The corresponding figure is enlarged at point B in the middle.

[0037] In the figure: 100, powder absorption cover; 101, air outlet pipe; 102, air inlet pipe; 103, sandwich cover; 104, upper baffle; 105, lower baffle; 106, air suction pipe; 107, first solenoid valve; 108, through hole; 109, connecting pipe; 110, second solenoid valve; 111, first air blowing pipe; 112, second air blowing pipe; 113, third solenoid valve; 114, fourth solenoid valve; 115, powder suction port; 116, inner plate; 117, outer plate; 118, sheath; 119, pipe opening; 120, connecting block; 121, pipe clamp; 12 2. Air supply pipe; 123. Nozzle; 124. Hose; 125. Horizontal slide; 126. Vertical slide; 127. Horizontal slider; 128. Vertical slider; 129. Displacement frame; 130. Vertical rod; 131. Guide groove; 132. Guide block; 133. Driven gear; 134. Rack; 200. Displacement drive mechanism; 201. First drive assembly; 202. Displacement unit; 203. Mounting frame; 204. Second drive assembly; 205. Mounting plate; 300. Powder filter; 400. Vacuum pump; 500. Argon source; 600. Powder drop tank. DETAILED DESCRIPTION

[0038] 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.

[0039] See also Figure 1 - Fig.10 A powder quick cleaning device based on a 3D printing device comprises a powder absorption cover 100, a displacement driving mechanism 200, a powder filter 300, a vacuum pump 400 and an argon source 500, wherein the powder absorption cover 100 is movably arranged inside the 3D printing device, and an air outlet pipe 101 and an air inlet pipe 102 are arranged on the top of the powder absorption cover 100; the displacement driving mechanism 200 is arranged inside the 3D printing device, and is used to drive the powder absorption cover 100 to move in the vertical direction and the horizontal direction.

[0040] Specifically, the displacement driving mechanism 200 includes a first driving component 201 and a displacement part 202 distributed vertically. Among them, the first driving component 201 is fixedly arranged on the inner wall of the 3D printing device. The movable end of the first driving component 201 is connected to the displacement part 202. An installation frame 203 in a C shape is arranged on the displacement part 202. Second driving components 204 distributed horizontally are arranged on both outer sides of the installation frame 203. An installation plate 205 is arranged inside the installation frame 203. Both side edges of the installation plate 205 are respectively connected to the movable ends of the two second driving components 204. The powder absorption cover 100 is fixedly connected to the installation plate 205. Therefore, the first driving component 201 can control the powder absorption cover 100 to move in the vertical direction, and the second driving component 204 can control the powder absorption cover 100 to move in the horizontal direction.

[0041] Furthermore, the air inlet end of the powder filter 300 is connected to the air outlet pipe 101 through a pipeline; the air inlet end of the vacuum pump 400 is connected to the air outlet end of the powder filter 300 through a pipeline, and the air outlet end of the vacuum pump 400 is connected to the air inlet pipe 102 through a pipeline; the air outlet end of the argon gas source 500 is also connected to the air inlet pipe 102 through a pipeline. That is to say, under the action of the vacuum pump 400, the gas can circulate inside the 3D printing device and inside the powder filter 300, so that the gas blown into the powder absorption cover 100 is filtered argon gas. It should be noted that the powder filter 300 adopts a bag filter, and a powder dropping tank 600 is arranged at the bottom ash outlet of the powder filter 300. Therefore, the powder dropping tank 600 is used to store the filtered metal powder, which is beneficial to the recycling of the metal powder.

[0042] On the other hand, an interlayer cover 103 is arranged inside the powder absorption cover 100. As Figure 3 shown, the top end of the interlayer cover 103 is fixedly connected to the inner side wall of the top of the powder absorption cover 100, the bottom end of the interlayer cover 103 is fixedly connected to the inner side wall of the bottom of the powder absorption cover 100, and the gap between the interlayer cover 103 and the powder absorption cover 100 forms a powder absorption cavity. The air outlet pipe 101 is arranged on the top wall of the powder absorption cover 100 and is communicated with the inside of the powder absorption cover 100. The inner end of the air outlet pipe 101 passes through the side wall of the powder absorption cover 100 and extends into the powder absorption cavity, and powder absorption ports 115 are arranged around the side wall of the interlayer cover 103. It is worth mentioning that the inner wall contour of the powder absorption cover 100 coincides with the outer wall contour of the forming cylinder in the 3D printing device. When the powder absorption cover 100 covers the outside of the forming cylinder, the inner wall of the powder absorption cover 100 will fit with the outer surface of the forming cylinder, and the interlayer cover 103 is located above the forming cylinder.

[0043] It should also be noted that in the first state, the air outlet pipe 101 is connected to the interior of the sandwich cover 103, and the air inlet pipe 102 is connected to the powder suction chamber; in the second state, the air outlet pipe 101 is connected to the powder suction chamber, and the air inlet pipe 102 is connected to the interior of the sandwich cover 103. The following specifically introduces how to achieve and switch between the two states.

[0044] Specifically, an upper baffle 104 and a lower baffle 105 are provided on the inner side of the top of the sandwich cover 103. Fig. 9 As shown, an air intake pipe 106 is provided through the upper partition 104 and the lower partition 105, and a first solenoid valve 107 is provided on the air intake pipe 106. A through hole 108 is also provided on the lower partition 105. A connecting pipe 109 is provided through the top wall of the interlayer cover 103 and above the upper partition 104. One end of the connecting pipe 109 extends into the powder suction chamber, and a second solenoid valve 110 is also provided on the connecting pipe 109; one end of the air intake pipe 102 extending into the powder suction chamber is connected to a first air blowing pipe 111 and a second air blowing pipe 112, the first air blowing pipe 111 passes through the top side wall of the interlayer cover 103 and extends between the upper partition 104 and the lower partition 105, and a third solenoid valve 113 and a fourth solenoid valve 114 are provided on the first air blowing pipe 111 and the second air blowing pipe 112, respectively.

[0045] It is worth mentioning that the first solenoid valve 107, the second solenoid valve 110, the third solenoid valve 113 and the fourth solenoid valve 114 are all controlled by an external controller to open and close. In the first state, the first solenoid valve 107 and the fourth solenoid valve 114 are opened, and the second solenoid valve 110 and the third solenoid valve 113 are closed, so that the top of the interlayer cover 103 is sucked and the side wall is blown; in the second state, the first solenoid valve 107 and the fourth solenoid valve 114 are closed, and the second solenoid valve 110 and the third solenoid valve 113 are opened, so that the top of the interlayer cover 103 is blown and the side wall is sucked. Therefore, the user can control the blowing and suction directions by controlling the opening and closing of the corresponding solenoid valves, which helps to evenly clean the metal powder on the base.

[0046] In another embodiment of the present application, the outer periphery of the sandwich cover 103 is fitted with an inner plate 116 covering the outer side of the powder suction port 115. Fig.10As shown, the outer surface of the inner plate body 116 is fitted with an outer plate body 117, the inner plate body 116 is penetrated by a pipe opening 119, and the outer plate body 117 is penetrated by a plurality of sheaths 118, one end of the sheath 118 is located in the powder suction chamber, and the other end passes through the pipe opening 119 and the powder suction port 115 and extends into the interior of the interlayer cover 103. The inner ends of the plurality of sheaths 118 are each provided with a connecting block 120, on which a pipe clamp 121 is fixedly provided, and the inner sides of the plurality of pipe clamps 121 located on the same side are commonly provided with an air supply pipe 122, the air supply pipe 122 and the pipe clamp 121 are rotatably fitted through a bearing, a nozzle 123 is further provided on the outer surface of the air supply pipe 122, a hose 124 is inserted into the interior of the sheath 118, and one end of the hose 124 is connected to the air supply pipe 122; therefore, when the pressure in the powder suction chamber increases, argon gas can enter the air supply pipe 122 through the hose 124, and finally be ejected by the nozzle 123.

[0047] It should be noted that the hose 124 is a rubber tube having certain elasticity and ductility, and a hole is formed through the connecting block 120 for the hose 124 to pass through, and the hose 124 and the inner wall of the hole are sealed to prevent air leakage of the sheath 118.

[0048] Furthermore, the inner plate 116 and the outer wall of the sandwich cover 103 slide together in the horizontal direction, and the outer plate 117 and the inner plate 116 slide together in the vertical direction. The outer surface of the sandwich cover 103 is provided with horizontal slide grooves 125 distributed in the horizontal direction, and the outer surface of the inner plate 116 is provided with vertical slide grooves 126 distributed in the vertical direction. The inner surface of the inner plate 116 is provided with a horizontal slider 127 matched with the horizontal slide groove 125, and the inner surface of the outer plate 117 is provided with a vertical slider 126 matched with the vertical slide groove 126. The outer side of the bottom of the sandwich cover 103 is also provided with a displacement frame 129, and the outer plate 117 and the displacement frame 129 are slidably matched along the length direction thereof. The bottom end of the displacement frame 129 is also provided with a vertical rod 130, and the bottom end of the vertical rod 130 is movable through the bottom wall of the sandwich cover 103; the outer wall of the sandwich cover 103 and the lower part of the powder suction port 115 are all provided with an S-shaped guide groove 131, and the inner surface of the outer plate 117 is provided with a guide block 132 for inserting into the guide groove 131. Due to the effect of gravity, under the natural state, the sheath 118 is always in contact with the inner bottom side of the tube opening 119, and at this time, the opening end of the nozzle 123 is vertically downward, and the top of the outer plate 117 is also lower than the upper edge of the tube opening 119; in addition, the displacement frame 129 can slide down along the length direction of the vertical rod 130 to push the outer plate 117 to move along the S-shaped path of the guide groove 131.

[0049] In addition, both ends of the air supply pipe 122 are fixedly mounted with driven gears 133, and the inner surface of the inner plate 116 and the positions on both sides of the pipe opening 119 are provided with racks 134 distributed vertically, and the driven gears 133 and the racks 134 correspond to each other one by one, and the driven gears 133 are meshed with the corresponding racks 134. It is worth mentioning that when the top wall of the forming cylinder pushes the vertical rod 130 to move upward, the displacement frame 129 can synchronously push the outer plate 117 to rise; due to the action of the guide block 132 and the guide groove 131, the outer plate 117 will move along the S-shaped path of the guide groove 131 during the rising process, and the inner plate 116 will slide back and forth along the horizontal slide groove 125. Secondly, since the driven gear 133 will mesh and roll along the rack 134, the nozzle 123 will also tilt and rotate upward, thereby changing the jet direction; in addition, since the outer plate 117 moves along the S-shaped path, the air supply pipe 122 also moves along the S-shaped path, thereby further changing the jet direction, achieving a uniform blowing effect, avoiding jet dead angles, and improving the cleaning effect of metal powder.

[0050] In summary, in the specific application process of the present invention, first, the displacement drive mechanism 200 controls the powder absorption cover 100 to move to the top of the molding cylinder, and then controls the powder absorption cover 100 to move downward, so as to cover the top of the molding cylinder. At this time, the top wall of the molding cylinder does not contact the bottom end of the vertical rod 130. The second solenoid valve 110 and the third solenoid valve 113 are opened, and the first solenoid valve 107 and the fourth solenoid valve 114 are closed. At this time, argon gas is blown downward from the through hole 108 and acts on the middle position of the top surface of the base, and the argon gas carrying metal powder enters the powder suction chamber from the powder suction port 115, and is finally discharged from the air outlet pipe 101; then the second solenoid valve 110 and the third solenoid valve 113 are closed, and the first solenoid valve 107 and the fourth solenoid valve 114 are opened. At this time, argon gas is ejected from the powder suction port 115 and acts on the edge position of the base, and the argon gas carrying metal powder is discharged through the air suction pipe 106 and the air outlet pipe 101. In the front and back states, argon gas is blown toward the middle and edge of the base respectively, thus helping to avoid dead corners for blowing and improving the thoroughness of metal powder cleaning.

[0051] In addition, the on-off state of several electromagnetic valves is maintained, and the displacement drive mechanism 200 controls the powder absorption cover 100 to slowly move downward again. Under the action of the top wall of the forming cylinder, the vertical rod 130 will move upward relative to the sandwich cover 103, thereby pushing the air supply pipe 122 to move along the S-shaped path, and the nozzle 123 will also tilt upward. In this process, the outer plate 117 gradually closes the pipe opening 119, so that the argon gas is ejected from the nozzle 123, further avoiding the occurrence of jet dead angles and improving the thoroughness of cleaning.

[0052] At the same time, when the nozzle 123 rotates upward, the forming cylinder will also move upward relative to the powder absorption cover, so as to keep the vertical distance between the nozzle 123 and the base in the forming cylinder unchanged, and ensure that the air flow intensity blown out by the nozzle 123 is large enough, so that the metal powder on the base can be completely blown up.

[0053] Specifically, in the process of cleaning metal powder, this embodiment has three cleaning modes. The first mode is blowing from top to bottom and sucking from the side to make the metal powder spread outward. The second mode is blowing from the side and sucking from the top to make the metal powder move toward the middle. The third mode is jetting from the nozzle 123 and sucking from the top to increase the jetting intensity. Compared with blowing in a single direction, metal powder may remain in the dead corners of the product surface. This embodiment uses three completely different blowing paths, which is more conducive to improving the thoroughness of powder cleaning.

[0054] On the other hand, in the third cleaning mode, the air supply pipe 122 moves upward along the S-shaped path, and the nozzle 123 also tilts and rotates upward. Since the molding cylinder pushes the vertical rod to move upward synchronously, the height difference between the base and the air supply pipe 122 remains unchanged. In this process, the air supply pipe 122 uses the base as a reference, which is equivalent to the air supply pipe 122 reciprocating along its own axis. The advantage of this design is to increase the jet range of the nozzle 123 and avoid cleaning dead corners.

[0055] At the same time, in the third cleaning mode, since the nozzle 123 rotates upward, that is, the nozzle 123 points to the edge of the base at the beginning, and then as the nozzle 123 rotates, the nozzle 123 gradually points to the middle of the base. Therefore, the nozzle 123 has the function of blowing the powder on the edge of the base to the middle to gather, so that it is more conducive to the suction pipe 106 to suck away the metal powder on the base and the product. More specifically, compared with the first two blowing modes, the third blowing mode is dynamically changed and the blowing intensity is greater. Therefore, it is equivalent to the first two blowing modes can clean most of the metal powder on the base, and in the third blowing mode, under the action of the huge airflow of the nozzle 123, the stubborn residue can be fully cleaned, so that the top of the base can be cleaned more thoroughly.

[0056] 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.

[0057] 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 powder quick cleaning device based on 3D printing equipment, characterized in that: include: A powder absorption cover (100), the powder absorption cover (100) being movably arranged inside the 3D printing device, and an air outlet pipe (101) and an air inlet pipe (102) being arranged on the top of the powder absorption cover (100); A displacement driving mechanism (200), the displacement driving mechanism (200) being arranged inside the 3D printing device and used for driving the powder absorbing cover (100) to move in a vertical direction and a horizontal direction; A powder filter (300), wherein an air inlet end of the powder filter (300) is connected to the air outlet pipe (101) via a pipeline; A vacuum pump (400), wherein an air inlet end of the vacuum pump (400) is connected to an air outlet end of the powder filter (300) via a pipeline, and an air outlet end of the vacuum pump (400) is connected to an air inlet pipe (102) via a pipeline; An argon gas source (500), wherein the gas outlet end of the argon gas source (500) is also connected to the gas inlet pipe (102) via a pipeline; The powder absorption cover (100) is provided with a sandwich cover (103) inside, and the gap between the sandwich cover (103) and the powder absorption cover (100) constitutes a powder absorption chamber, the air outlet pipe (101) is provided on the top wall of the powder absorption cover (100) and communicates with the inside of the powder absorption cover (100), the inner end of the air inlet pipe (102) passes through the side wall of the powder absorption cover (100) and extends into the powder absorption chamber, and the side wall of the sandwich cover (103) is provided with powder absorption ports (115) all around; in a first state, the air outlet pipe (101) communicates with the inside of the sandwich cover (103), and the air inlet pipe (102) communicates with the powder absorption chamber; in a second state, the air outlet pipe (101) communicates with the powder absorption chamber, and the air inlet pipe (102) communicates with the inside of the sandwich cover (103); An upper partition (104) and a lower partition (105) are provided on the inner side of the top of the interlayer cover (103); an air suction pipe (106) is provided through the upper partition (104) and the lower partition (105); a first electromagnetic valve (107) is provided on the air suction pipe (106); a through hole (108) is also provided on the lower partition (105); a connecting pipe (109) is provided through the top wall of the interlayer cover (103) and above the upper partition (104); one end of the connecting pipe (109 extends into the powder suction chamber; a second electromagnetic valve (110) is also provided on the connecting pipe (109); One end of the air inlet pipe (102) extending into the powder suction chamber is connected to a first air blowing pipe (111) and a second air blowing pipe (112); the first air blowing pipe (111) passes through the top side wall of the sandwich cover (103) and extends between the upper partition plate (104) and the lower partition plate (105); and a third solenoid valve (113) and a fourth solenoid valve (114) are respectively provided on the first air blowing pipe (111) and the second air blowing pipe (112); The displacement driving mechanism (200) includes a first driving component (201) and a displacement part (202) distributed vertically. The first driving component (201) is fixedly arranged on the inner wall of the 3D printing device. The movable end of the first driving component (201) is connected to the displacement part (202). An installation frame (203) in a U-shape is arranged on the displacement part (202). Second driving components (204) distributed horizontally are arranged on both outer sides of the installation frame (203). An installation plate (205) is arranged inside the installation frame (203). Both side edges of the installation plate (205) are respectively connected to the movable ends of the two second driving components (204). The powder absorption cover (100) is fixedly connected to the installation plate (205); Inner plate bodies (116) covering the outer sides of the powder suction ports (115) are closely arranged around the outer periphery of the sandwich cover (103). An outer plate body (117) is closely arranged on the outer surface of the inner plate body (116). A pipe passing opening (119) is formed through the inner plate body (116). A plurality of sheaths (118) are formed through the outer plate body (117). One end of each sheath (118) is located in the powder suction cavity, and the other end passes through the pipe passing opening (119) and the powder suction port (115) and extends into the interior of the sandwich cover (103); Connection blocks (120) are arranged at the inner ends of the plurality of sheaths (118). Pipe clamps (121) are fixedly arranged on the connection blocks (120). An air supply pipe (122) is commonly arranged inside the pipe clamps (121) on the same side. The air supply pipe (122) and the pipe clamps (121) are rotationally matched through bearings. Nozzles (123) are further arranged on the outer surface of the air supply pipe (122). A hose (124) is inserted into the interior of the sheath (118). One end of the hose (124) is communicated with the air supply pipe (122); The inner plate body (116) and the outer wall of the sandwich cover (103) are slidably matched horizontally. The outer plate body (117) and the inner plate body (116) are slidably matched vertically. A displacement frame (129) is further sleeved on the outer side of the bottom of the sandwich cover (103). The outer plate body (117) and the displacement frame (129) are slidably matched along their own length directions. A vertical rod (130) is arranged at the bottom end of the displacement frame (129). The bottom end of the vertical rod (130) movably penetrates the bottom wall of the sandwich cover (103); S-shaped guiding grooves (131) are formed in the outer side walls around the sandwich cover (103) and below the powder suction ports (115). Guiding blocks (132) for inserting into the guiding grooves (131) are arranged on the inner surface of the outer plate body (117); when the inner bottom sides of the sheaths (118) and the pipe passing opening (119) are in contact, the top end of the outer plate body (117) is lower than the upper edge of the pipe passing opening (119); Both ends of the air supply pipe (122) are fixedly sleeved with driven gears (133); the inner surface of the inner plate (116) and the positions on both sides of the pipe-through opening (119) are provided with racks (134) distributed in the vertical direction; the driven gears (133) and the racks (134) correspond one to one, and the driven gears (133) are meshed with the corresponding racks (134).

2. A powder material quick cleaning device based on 3D printing equipment according to claim 1, characterized in that: The outer surface of the interlayer cover (103) is provided with a horizontal slide groove (125) distributed in the horizontal direction, the outer surface of the inner plate body (116) is provided with a vertical slide groove (126) distributed in the vertical direction, the inner surface of the inner plate body (116) is provided with a horizontal sliding block (127) matched with the horizontal slide groove (125), and the inner surface of the outer plate body (117) is provided with a vertical sliding block (128) matched with the vertical slide groove (126).

3. The powder material quick cleaning device based on 3D printing equipment according to claim 1, characterized in that: The powder filter (300) adopts a bag dust collector, and a powder dropping tank (600) is provided at the bottom dust outlet of the powder filter (300).

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