A 3D printing device that facilitates continuous operation

Abstract

The present invention discloses a 3D printing device that is convenient for continuous operation, and relates to the technical field of 3D printing, including a device body, a vacuum pump is installed on the top of the device body, an air pump is arranged on the side of the device body, a bottom groove is opened in the center of the inner bottom wall of the device body, and a sliding frame is installed in the bottom groove, the inside of the device body is separated by a partition and provided with a printing chamber and a powder removal chamber, and a channel connecting the printing chamber and the powder removal chamber is opened at the lower end of the partition, and a sealing stopper of a lifting sealing channel is installed inside the upper end of the partition, the bottom wall of the bottom groove is downwardly provided with a forming cylinder and a powder cylinder in the printing chamber, the bottom wall of the bottom groove is downwardly provided with a powder blowing cylinder in the powder removal chamber, a powder suction component connected to a vacuum pump is also provided in the powder removal chamber, and a powder blowing component connected to an air pump is symmetrically provided at the upper end of the powder blowing cylinder. The present invention can realize continuous printing processing of parts, and improve the efficiency of 3D printing.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a 3D printing device that is convenient for continuous operation. Background Art

[0002] A metal powder 3D printer is an additive manufacturing device that uses metal powder materials to create three-dimensional metal objects by stacking them layer by layer. During the printing process, a high-energy laser beam is used to irradiate the metal powder material, causing the powder particles to melt and solidify rapidly under the action of the laser, thereby sintering the metal powder layer by layer into the desired three-dimensional shape.

[0003] In the process of metal powder 3D printing, metal powder needs to be laid on the printing substrate first, and the finished product is printed layer by layer, and the powder is laid again after each layer is printed. After printing, there are multiple layers of powder on the substrate and the forming cylinder. When taking out the parts, the powder needs to be cleaned before taking them out. In the process of cleaning metal powder, manual cleaning is inefficient and slow. Although the cleaning efficiency is improved by using special powder suction equipment such as vacuum suction, it is still necessary to wash the air in the sealed cabin and inject inert gas into the sealed cabin during the cleaning process. It still takes a certain amount of time to wait. When continuous printing is required, it will lead to a long waiting time for cleaning between parts, which will affect the overall work efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that when continuous printing is required, it will cause a long waiting time for cleaning between parts, thereby affecting the overall work efficiency, and propose a 3D printing device that is convenient for continuous operation.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A 3D printing device that is convenient for continuous operation, comprising a device body, a vacuum pump is installed on the top of the device body, an air pump is arranged on the side of the device body, a bottom groove is opened in the center of the inner bottom wall of the device body, and a sliding frame is installed in the bottom groove, the inside of the device body is divided into a printing chamber and a powder removal chamber by a partition, and a channel connecting the printing chamber and the powder removal chamber is opened at the lower end of the partition, a sealing stopper of a lifting sealing channel is installed inside the upper end of the partition, a forming cylinder and a powder cylinder are arranged downward in the printing chamber on the bottom wall of the bottom groove, a powder blowing cylinder is arranged downward in the powder removal chamber on the bottom wall of the bottom groove, a powder suction component connected to the vacuum pump is also arranged in the powder removal chamber, and a powder blowing component connected to the air pump is symmetrically arranged on the upper end of the powder blowing cylinder;

[0007] The bottoms of the forming cylinder, powder cylinder and powder blowing cylinder are all equipped with lifting cylinders, and a pad is connected to the top of the lifting cylinder, and the four corners of the pad of the forming cylinder are provided with telescopic clamping components adapted to the base plate, and a rotating baffle is rotatably installed in the middle of the sliding frame, and the rotating baffle forms a frame structure with the sliding frame when it is horizontal, and a blowing component for blowing air to the bottom of the outer side of the base plate is provided at the bottom of the frame structure, and the sliding frame and the rotating baffle can drive the base plate to move, so that the base plate moves to the designated position without interference;

[0008] Among them, when the substrate moves, the telescopic clamping assembly and the sealing baffle shrink simultaneously. After the movement is completed, the powder suction assembly descends to form a closed space covering the substrate between the sliding frame, and after the sliding frame moves and recovers, the powder suction assembly continues to descend to form a closed space covering the substrate between the equipment body.

[0009] Preferably, a discharge hatch door connected to the printing chamber is provided on one side of the exterior of the equipment body, and a material taking hatch door connected to the powder removal chamber is provided on the other side of the exterior of the equipment body.

[0010] Preferably, both side walls of the bottom groove at the forming cylinder are provided with sliding grooves, and sliding screws are installed in the sliding grooves. The sliding frame is arranged in the bottom groove, and the sliding frame reciprocates along the sliding grooves in the bottom groove.

[0011] Preferably, the sliding frame is frame-shaped, and the middle parts of both ends of the sliding frame are connected outward with screw sliders that fit in the sliding grooves, and the screw sliders are adapted to the sliding screws. A snap-in groove is also symmetrically opened in the middle part of the top surface of the sliding frame, one end of the rotating baffle is hinged in a snap-in groove away from the powder scraper, and the other end of the rotating baffle is rotatably fitted in another snap-in groove.

[0012] Preferably, the air blowing assembly includes a plurality of first powder blowing holes arranged at the bottom of the inner side surface of the sliding frame and a plurality of second powder blowing holes arranged at the bottom of one side surface of the rotating baffle, the first powder blowing holes and the second powder blowing holes are both arranged to be inclined downward, a first air inlet hole connected to an air pump is provided on the side surface of one end of the sliding frame, and a second air inlet hole connected to the rotating baffle is provided on the inner wall of the clamping groove.

[0013] Preferably, a third air inlet hole connected to the second air inlet hole is provided on the side surface of one end of the rotating baffle away from the hinge, a powder wiping plate attached to the bottom wall of the bottom groove is provided on the bottom surface of the rotating baffle, and elastic protrusions are provided at both ends of the side surface of the rotating baffle above the second powder blowing hole.

[0014] Preferably, the powder suction assembly includes a powder suction cover arranged in the powder removal chamber, a lifting cylinder connected to the four corners of the top of the powder suction cover, and a telescopic hose connecting the powder suction cover and the vacuum pump, and the top end of the lifting cylinder is fixed on the top wall of the powder removal chamber.

[0015] Preferably, both side walls of the upper end of the powder blowing cylinder are provided with inner grooves, and the powder blowing assembly includes a powder blowing cover slidably arranged in the inner groove, a first electric push rod connected to both ends of the inner wall of the powder blowing cover, and a plurality of air blowing pipes installed on the outside of the powder blowing cover, the fixed end of the first electric push rod is installed on the side wall of the inner groove, the outer wall of the powder blowing cover is attached to the inner wall of the inner groove, and a worm drive for driving a plurality of air blowing pipes to rotate is installed on the inner wall of the powder blowing cover.

[0016] Preferably, bottom holes are provided at the four corners of the pad above the forming cylinder, and the telescopic clamping assembly includes a second electric push rod installed at the bottom end of the bottom hole and a clamping joint installed at the top end of the second electric push rod, and the clamping joint is inserted into the four corner holes on the bottom surface of the base plate.

[0017] Preferably, the sealing baffle comprises a third electric push rod disposed at the upper end of the interior of the partition and a lifting baffle installed at the bottom end of the third electric push rod, and the lifting baffle moves downward and seals the channel at the lower end of the partition.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The present invention provides a printing chamber and a powder removal chamber in the device body. After the printing of the parts is completed, the sliding frame and the rotating baffle move on the bottom groove to drive the parts and the substrate into the powder removal chamber. After the initial powder blowing, the parts and the substrate are retained in the powder removal chamber. After that, the sliding frame and the rotating baffle move and recover, and the printing process of the next group of parts can be continued directly. There is no need to wait for the printed parts to be cleaned for a long time, so that the continuous printing process of the parts is realized, and the efficiency of 3D printing is improved.

[0020] In addition, by arranging an air blowing assembly between the sliding frame and the rotating baffle, the air blowing assembly can blow away the powder dropped from the outside of the substrate and the powder swept during the movement of the sliding frame, and cooperate with the powder suction assembly to ensure that there is no powder residue inside the substrate after the sliding frame drives the substrate to move, and then after the sliding frame is restored, the next substrate can be placed quickly, further improving work efficiency;

[0021] Finally, the powder blowing assembly is symmetrically installed in the molding cylinder in the powder removal chamber. After the substrate moves to the powder removal chamber, the lifting cylinder drives the substrate to move up and down in the powder blowing cylinder, and then cooperates with the powder blowing assembly to move horizontally in the powder blowing cylinder. The air blowing pipe of the powder blowing assembly is tilted. When removing powder from the substrate and the molded parts, the powder is automatically blown thoroughly on the surface of the substrate and the parts first, and then sucked, and the powder cleaning efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0023] Figure 2This is a schematic diagram of the interior of a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0024] Figure 3 A cross-sectional view of a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0025] Figure 4 A schematic diagram of the structure of a device body of a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0026] Figure 5 A schematic diagram of a sliding frame structure of a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0027] Figure 6 A schematic diagram of a rotating baffle structure of a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0028] Figure 7 This is a cross-sectional view of an initial stage of a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0029] Figure 8 A cross-sectional view of a substrate moving in a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0030] Fig. 9 A cross-sectional view of a substrate during powder cleaning of a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0031] Fig.10 A front view of a powder blowing component of a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0032] Fig.11 A schematic diagram of the structure of a powder blowing component of a 3D printing device that is convenient for continuous operation proposed by the present invention;

[0033] Fig.12 This is a schematic diagram of the structure of a telescopic clamping assembly of a 3D printing device that is convenient for continuous operation proposed by the present invention.

[0034] In the figure: 1. Equipment body; 2. Vacuum pump; 3. Air pump; 4. Bottom groove; 5. Sliding frame; 6. Rotating baffle; 7. Powder suction assembly; 8. Lifting cylinder; 9. Pad; 10. Base plate; 11. Powder blowing assembly; 12. Telescopic clamping assembly; 13. Sealing baffle; 14. Part body; 101. Printing chamber; 102. Powder removal chamber; 103. Material discharge hatch; 104. Material collection hatch; 105. Forming cylinder; 106. Powder cylinder; 107. Powder blowing cylinder; 401. Sliding groove; 402. Sliding lead screw; 501. Clamping groove; 502. Lead screw slider; 503. First powder blowing hole ;504, first air inlet; 505, second air inlet; 601, powder wiping plate; 602, second powder blowing air hole; 603, third air inlet; 71, powder suction cover; 72, lifting cylinder; 73, telescopic hose; 81, first lifting cylinder; 82, second lifting cylinder; 83, third lifting cylinder; 91, first pad; 92, second pad; 93, third pad; 111, powder blowing cover; 112, first electric push rod; 113, air blowing pipe; 114, worm drive; 121, second electric push rod; 122, card joint; 131, lifting baffle; 132, third electric push rod. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Reference Figure 1-Figure 12A 3D printing device that is convenient for continuous operation includes a device body 1, a vacuum pump 2 is installed on the top of the device body 1 for absorbing the powder after printing, an air pump 3 is arranged on the side of the device body 1, a bottom groove 4 is opened in the center of the inner bottom wall of the device body 1, and a sliding frame 5 is installed in the bottom groove 4, the interior of the device body 1 is divided into a printing chamber 101 and a powder removal chamber 102 by a partition, the bottom groove 4 is located below the partition, and a gap is formed between the partition and the bottom groove 4. When the sliding frame 5 is initially working, the end of the sliding frame 5 fills the gap to achieve a sealed separation between the printing chamber 101 and the powder removal chamber 102, and a channel connecting the printing chamber 101 and the powder removal chamber 102 is opened at the lower end of the partition. The channel is used for the part body 14 to pass through when the substrate 10 drives the part body 14 to move toward the powder removal chamber 102. A sealing baffle 13 for the lifting and lowering sealing channel is installed inside the upper end of the partition, that is, when printing, the channel is sealed to ensure that the printing chamber 101 and the powder removal chamber 102 are sealed and separated during printing. The bottom wall of the bottom groove 4 is provided with a forming cylinder 105 and a powder cylinder 106 downward in the printing chamber 101, and the bottom wall of the bottom groove 4 is provided with a powder blowing cylinder 107 downward in the powder removal chamber 102. The forming cylinder 105, the powder cylinder 106 and the powder blowing cylinder 107 are all the same size. The powder removal chamber 102 is also provided with a powder suction component 7 connected to the vacuum pump 2, and the upper end of the powder blowing cylinder 107 is symmetrically provided with a powder blowing component 11 connected to the air pump 3.

[0038] In addition, the device body 1 is also provided with existing mechanisms such as a print head and a powder scraper, which are all existing technologies and will not be described in detail, and some of them are not shown in the figure.

[0039] A lifting cylinder 8 is installed at the bottom of the forming cylinder 105 , the powder cylinder 106 and the powder blowing cylinder 107 , and a backing plate 9 is connected to the top of the lifting cylinder 8 .

[0040] Reference Figure 3-Figure 9The lifting cylinder 8 includes a first lifting cylinder 81, a second lifting cylinder 82 and a third lifting cylinder 83 from left to right in the equipment body 1, and the pad 9 includes a first pad 91, a second pad 92 and a third pad 93 from left to right. The first lifting cylinder 81, the second lifting cylinder 82 and the third lifting cylinder 83 are controlled respectively, wherein the first lifting cylinder 81 drives the first pad 91 to rise and fall, and similarly, the second lifting cylinder 82 and the third lifting cylinder 83 respectively drive the corresponding pad 9 to rise and fall, and the pad 9 of the forming cylinder 105 is provided with a telescopic clamping assembly 12 adapted to the substrate 10 at the four corners, that is, the second pad 92 is provided with holes at the four corners for the installation of the telescopic clamping assembly 12, and the telescopic clamping assembly 12 includes a second electric push rod 121 installed at the bottom end of the hole and a clamping joint 122 installed at the top end of the second electric push rod 121, and the clamping joint 122 is inserted into the four corner holes on the bottom surface of the substrate 10. The top surfaces of the other two pads 9 remain smooth, and a rotating baffle 6 is rotatably installed in the middle of the sliding frame 5. When the rotating baffle 6 is horizontal, it forms a frame structure with the sliding frame 5, and a blowing component for blowing air to the bottom of the outer side of the substrate 10 is provided at the bottom of the frame structure, which is used to blow up the powder part on the outer side of the substrate 10 for subsequent powder absorption treatment, and the sliding frame 5 and the rotating baffle 6 can drive the substrate 10 to move, so that the substrate 10 moves to the specified position without interference, that is, the substrate 10 can stably move from above the forming cylinder 105 to above the powder blowing cylinder 107.

[0041] Among them, when the substrate 10 moves, the telescopic clamping assembly 12 and the sealing baffle 13 shrink at the same time, that is, the substrate 10 shrinks first and then moves, so as to interfere with the substrate 10. After the movement is completed, the powder suction assembly 7 descends and forms a closed space covering the substrate 10 between the sliding frame 5. At this time, the blowing assembly can first blow air to the powder on the outside of the substrate 10 and then absorb it. After the sliding frame 5 moves and recovers, the powder suction assembly 7 continues to descend and forms a closed space covering the substrate 10 between the equipment body 1. At this time, the powder blowing assembly 11 can first blow air to the top surface of the substrate 10 and the powder on the surface of the part body 14 and then absorb it.

[0042] A discharge hatch door 103 connected to the printing chamber 101 is provided on one side of the outside of the equipment body 1. When printing, the discharge hatch door 103 is opened to place the substrate 10 on the forming cylinder 105. A material collection hatch door 104 connected to the powder removal chamber 102 is provided on the other side of the outside of the equipment body 1. After printing and powder cleaning are completed, the material collection hatch door 104 is opened to take out the substrate 10 and the part body 14 from above the powder blowing cylinder 107.

[0043] Both side walls of the bottom groove 4 at the forming cylinder 105 are provided with sliding grooves 401, and sliding screws 402 are installed in the sliding grooves 401, and a motor for driving the sliding screw 402 is also provided in the equipment body 1. The sliding frame 5 is arranged in the bottom groove 4, and the sliding frame 5 reciprocates along the sliding groove 401 in the bottom groove 4. Initially, one end of the sliding frame 5 is in contact with the inner wall of the equipment body 1 above the powder cylinder 106, and the other end of the sliding frame 5 fills the gap between the partition and the bottom groove 4. After the initial movement is completed, one end of the sliding frame 5 is in contact with the inner wall of the equipment body 1 above the powder blowing cylinder 107, and the rotating baffle 6 fills the gap between the partition and the bottom groove 4, and then the sliding frame 5 starts to move in the opposite direction.

[0044] The sliding frame 5 is frame-shaped, and the middle parts of both ends of the sliding frame 5 are connected outwardly with a screw slider 502 that fits in the sliding groove 401, and the screw slider 502 is adapted to the sliding screw 402. A symmetrical clamping groove 501 is also opened in the middle part of the top surface of the sliding frame 5. One end of the rotating baffle 6 is hinged in a clamping groove 501 away from the powder scraper, and the other end of the rotating baffle 6 is rotatably fitted in another clamping groove 501. The rotating baffle 6 divides the sliding frame 5 into two spaces of equal size. A motor for controlling the rotation of the rotating baffle 6 is installed in the sliding frame 5 to realize the transformation of the rotating baffle 6 from vertical to horizontal. It is kept vertical initially to avoid interference with the powder scraper.

[0045] The air blowing assembly includes a plurality of first powder blowing holes 503 arranged at the bottom of the inner side surface of the sliding frame 5 and a plurality of second powder blowing holes 602 arranged at the bottom of one side surface of the rotating baffle 6. The first powder blowing holes 503 and the second powder blowing holes 602 together realize blowing air to the bottom of the four sides of the substrate 10. The first powder blowing holes 503 and the second powder blowing holes 602 are both arranged tilted downward. The tilted arrangement is for both facilitating air blowing and preventing some powder from entering the holes. A first air inlet hole 504 connected to the air pump 3 is provided on the side surface of one end of the sliding frame 5, and a second air inlet hole 505 connected to the rotating baffle 6 is provided on the inner wall of the clamping groove 501, so that when air is blown from the first air inlet hole 504, the gas can be sent into the first powder blowing holes 503 and the second air inlet holes 505 through the first air inlet hole 504.

[0046] A third air inlet 603 connected to the second air inlet 505 is provided on the side surface of the end of the rotating baffle 6 away from the hinge, so that the gas passing through the second air inlet 505 enters the third air inlet 603 and then bulges out from the second powder blowing hole 602. The bottom surface of the rotating baffle 6 is provided with a powder wiping plate 601 which is attached to the bottom wall of the bottom groove 4. The powder wiping plate 601 is a soft plate which is attached to the bottom wall of the bottom groove 4. When the rotating baffle 6 moves, the powder above the forming cylinder 105 can be scraped by the powder wiping plate 601. Elastic protrusions are provided at both ends of the side of the rotating baffle 6 above the second powder blowing hole 602. When the rotating baffle 6 is horizontal, the elastic protrusions can be against the side of the substrate 10. When the rotating baffle 6 moves, the elastic protrusions drive the substrate 10 to move to ensure that after the rotating baffle 6 enters the powder removal chamber 102, the substrate 10 is just located on the first pad 91.

[0047] Furthermore, in order to achieve better operation of the powder suction assembly 7, the powder suction assembly 7 includes a powder suction cover 71 arranged in the powder removal chamber 102, a lifting cylinder 72 connected to the four corners of the top of the powder suction cover 71, and a telescopic hose 73 connecting the powder suction cover 71 and the vacuum pump 2. The top end of the lifting cylinder 72 is fixed on the top wall of the powder removal chamber 102. The extension and retraction of the lifting cylinder 72 can drive the powder suction cover 71 to move up and down, so that the telescopic hose 73 can cooperate with the extension and retraction.

[0048] Both side walls of the upper end of the powder blowing cylinder 107 are provided with inner grooves, one set of air outlets of the air pump 3 is connected with the two inner grooves, and the other set of air outlets is connected with the first air inlet 504 on the sliding frame 5, and the two air outlets are controlled by a three-way valve, and the powder blowing assembly 11 includes a powder blowing cover 111 slidingly arranged in the inner groove, a first electric push rod 112 connected to the two ends of the inner wall of the powder blowing cover 111, and a plurality of air blowing pipes 113 installed on the outside of the powder blowing cover 111, and the first electric push rod 112 is fixed. The first end is installed on the side wall of the inner groove, and the extension of the first electric push rod 112 can drive the powder blowing cover 111 to slide in the inner groove. The outer wall of the powder blowing cover 111 is attached to the inner wall of the inner groove to avoid air leakage. A worm drive 114 for driving a plurality of air blowing pipes 113 to rotate is installed on the inner wall of the powder blowing cover 111. The worm drive 114 consists of a motor, a worm and a worm wheel. The worm wheel is installed at the end of each air blowing pipe 113 located in the powder blowing cover 111, so that the motor drives the worm to rotate, the worm drives the worm wheel to rotate, and then drives the air blowing pipe 113 to rotate. Since the air blowing pipe 113 is tilted, the inclination angle and position of the air outlet of the air blowing pipe 113 can be adjusted.

[0049] The sealing baffle 13 includes a third electric push rod 132 arranged at the upper end of the partition and a lifting baffle 131 installed at the bottom end of the third electric push rod 132. The third electric push rod 132 is fixedly connected to the lifting baffle 131 to realize the extension and retraction of the third electric push rod 132, driving the lifting baffle 131 to move downward to seal the channel at the lower end of the partition. The lifting baffle 131 rises to allow the substrate 10 to pass through the channel. The top end of the third electric push rod 132 is fixed in the partition to maintain stability.

[0050] Working principle: When printing, the rotating baffle 6 is first driven to vertical by the built-in motor, and then the substrate 10 is placed on the pad 9 above the forming cylinder 105, so that the holes at the four corners of the bottom surface of the substrate 10 are sunk into the clamping joints 122 of the telescopic clamping assembly 12. After positioning the substrate 10, the lifting and lowering of the second lifting cylinder 82 and the third lifting cylinder 83 are adjusted respectively, and the powder spreading scraper and the print head are used to perform 3D printing on the parts on the substrate 10;

[0051] After printing, if Figure 7 As shown, the second lifting cylinder 82 is extended to move the part and the substrate 10 to the working area above the forming cylinder 105, and the rotating baffle 6 is controlled to rotate to fit horizontally in the sliding frame 5, and the third electric push rod 132 of the sealing assembly is controlled to contract, driving the lifting baffle 131 to rise and open the partition channel, and at the same time, the second electric push rod 121 of the telescopic clamping assembly 12 is controlled to contract, so that the clamping joint 122 leaves the substrate 10, and the connection between the substrate 10 and the pad 9 is released, and then the sliding frame 5 and the rotating baffle 6 move into the powder removal chamber 102 together, and the elastic protrusion of the rotating baffle 6 drives the substrate 10 to move into the powder removal chamber 102 together, until the substrate 10 is completely moved into the powder removal chamber 102, as shown in FIG. Figure 8 As shown, at this time, the lifting cylinder 72 of the powder suction component 7 extends, driving the powder suction cover 71 to move downward, covering the top of the sliding frame 5, sealing the top of the sliding frame 5, and starting to transport inert gas to the sliding frame 5 and the rotating baffle 6 through the first air inlet hole 504, the second air inlet hole 505, and the third air inlet hole 603. The inert gas begins to blow out the inert gas to the bottom of the outer side of the substrate 10 through the first powder blowing hole 503 and the second powder blowing hole 602 to blow up the powder on the outer side of the substrate 10. Then the vacuum pump 2 is started to absorb the powder blown up by the air on the outer side of the substrate 10. After absorption, the first lifting cylinder 81 drives the substrate 10 and the parts to move downward until they move into the powder blowing cylinder 107. Then the sliding part and the rotating baffle 6 start to move in the opposite direction to restore until as shown in FIG. Fig. 9 As shown;

[0052] After the sliding frame 5 and the rotating baffle 6 are restored, the rotating baffle 6 is rotated to be vertical again, and the sealing baffle 13 seals the partition again, and the telescopic clamping assembly 12 is pushed upward again, and the 3D printing of the next group of parts can be started directly;

[0053] In the powder blowing cylinder 107, when the powder on the substrate 10 and the surface of the parts is cleaned, Fig. 9 As shown, at this time, the first electric push rod 112 is extended, and the first electric push rod 112 drives the powder blowing cover 111 to move into the powder blowing cylinder 107, and the air pump 3 is connected with the two inner grooves, and the inert gas is blown out from the air blowing pipe 113 through the powder blowing cover 111. At this time, since the air blowing pipe 113 is arranged obliquely, according to the extension of the first electric push rod 112 and the descent of the first lifting cylinder 81, the substrate 10 and the surface of the part are blown in two-way cooperation, and according to the distance between the nozzle of the air blowing pipe 113 and the substrate 10, the power of the air pump 3 is adjusted, so that when the nozzle of the air blowing pipe 113 is at a greater distance from the substrate 10, the power is greater; The power is small so that the intensity of the air blowing pipe 113 blowing to the substrate 10 or the surface of the part is kept as consistent as possible to blow up the powder. At the same time, the suction cover is lowered to the bottom groove 4 again, so that the suction cover is covered above the powder blowing cylinder 107, and the vacuum pump 2 is started to work again to absorb the blown powder. After the powder on the surface of the substrate 10 and the part is blown away, the worm drive 114 is started to drive several air blowing pipes 113 to rotate 180° so that the mouth of the air blowing pipe 113 faces upward, thereby accelerating the efficiency of the powder being absorbed by the powder suction cover 71. After the absorption is completed, the air blowing pipe 113 rotates and recovers, the first electric push rod 112 contracts, and the first lifting cylinder 81 moves upward, driving the substrate 10 and the part to move above the powder blowing cylinder 107, and raising the powder suction cover 71, the material taking cabin door 104 can be opened, and the substrate 10 and the part are taken out together, waiting for the next group of substrates 10 and parts to be cleaned.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A 3D printing device that facilitates continuous operation, comprising a device body (1), characterized in that: A vacuum pump (2) is installed on the top of the device body (1), an air pump (3) is arranged on the side of the device body (1), a bottom groove (4) is opened in the center of the bottom wall of the device body (1), and a sliding frame (5) is installed in the bottom groove (4), the inside of the device body (1) is divided into a printing chamber (101) and a powder removal chamber (102) by a partition, and a passage connecting the printing chamber (101) and the powder removal chamber (102) is opened at the lower end of the partition, and a sliding frame (5) is installed in the bottom groove (4) of the device body (1). A sealing stopper (13) of a lifting sealing channel is installed inside, a molding cylinder (105) and a powder cylinder (106) are arranged downwardly on the bottom wall of the bottom groove (4) in the printing chamber (101), a powder blowing cylinder (107) is arranged downwardly on the bottom wall of the bottom groove (4) in the powder removal chamber (102), a powder suction component (7) connected to a vacuum pump (2) is also arranged in the powder removal chamber (102), and a powder blowing component (11) connected to an air pump (3) is symmetrically arranged at the upper end of the powder blowing cylinder (107); The bottoms of the molding cylinder (105), the powder cylinder (106) and the powder blowing cylinder (107) are all equipped with a lifting cylinder (8), and a pad (9) is connected to the top of the lifting cylinder (8), and the pad (9) of the molding cylinder (105) is provided with telescopic clamping components (12) adapted to the base plate (10) at four corners, and a rotating baffle (6) is rotatably installed in the middle of the sliding frame (5), and the rotating baffle (6) forms a frame structure with the sliding frame (5) when the rotating baffle (6) is horizontal, and a blowing component for blowing air toward the outer bottom of the base plate (10) is provided at the bottom of the frame structure, and the sliding frame (5) and the rotating baffle (6) can drive the base plate (10) to move, so that the base plate (10) moves to a specified position without interference; When the substrate (10) moves, the telescopic clamping assembly (12) and the sealing stopper (13) shrink simultaneously. After the movement is completed, the powder suction assembly (7) descends to form a closed space above the substrate (10) between the sliding frame (5). After the sliding frame (5) moves and recovers, the powder suction assembly (7) continues to descend to form a closed space above the substrate (10) between the device body (1).

2. A 3D printing device that facilitates continuous operation according to claim 1, characterized in that: A discharge hatch door (103) connected to the printing chamber (101) is provided on one side of the exterior of the device body (1), and a take-out hatch door (104) connected to the powder removal chamber (102) is provided on the other side of the exterior of the device body (1).

3. A 3D printing device that facilitates continuous operation according to claim 1, characterized in that: Both side walls of the bottom groove (4) located at the forming cylinder (105) are provided with sliding grooves (401), and a sliding screw (402) is installed in the sliding groove (401). The sliding frame (5) is arranged in the bottom groove (4), and the sliding frame (5) reciprocates along the sliding groove (401) in the bottom groove (4).

4. A 3D printing device that facilitates continuous operation according to claim 1, characterized in that: The powder suction assembly (7) comprises a powder suction cover (71) arranged in the powder removal chamber (102), a lifting cylinder (72) connected to the four corners of the top of the powder suction cover (71), and a telescopic hose (73) connecting the powder suction cover (71) and the vacuum pump (2), wherein the top end of the lifting cylinder (72) is fixed to the top wall of the powder removal chamber (102).

5. The 3D printing device that is convenient for continuous operation according to claim 1, characterized in that: The upper side walls of the powder blowing cylinder (107) are provided with inner grooves. The powder blowing assembly (11) comprises a powder blowing cover (111) slidably arranged in the inner groove, a first electric push rod (112) connected to both ends of the inner wall of the powder blowing cover (111), and a plurality of air blowing pipes (113) installed on the outside of the powder blowing cover (111). The fixed end of the first electric push rod (112) is installed on the side wall of the inner groove. The outer wall of the powder blowing cover (111) is attached to the inner wall of the inner groove. A worm drive (114) for driving the plurality of air blowing pipes (113) to rotate is installed on the inner wall of the powder blowing cover (111).

6. The 3D printing device that is convenient for continuous operation according to claim 1, characterized in that: The backing plate (9) above the forming cylinder (105) is provided with bottom holes at four corners, and the telescopic clamping assembly (12) comprises a second electric push rod (121) mounted at the bottom end of the bottom hole and a clamping joint (122) mounted at the top end of the second electric push rod (121), and the clamping joint (122) is inserted into the four corner holes on the bottom surface of the base plate (10).

7. The 3D printing device that facilitates continuous operation according to claim 1, characterized in that: The sealing baffle (13) comprises a third electric push rod (132) arranged at the upper end of the interior of the partition and a lifting baffle (131) installed at the bottom end of the third electric push rod (132); the lifting baffle (131) moves downward and seals the channel at the lower end of the partition.

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