3D printing equipment with cleaning function

Abstract

The invention provides 3D printing equipment with a cleaning function, and relates to the technical field of 3D printing, the 3D printing equipment comprises a box shell, a 3D printing nozzle and a printing platform, a three-axis driving mechanism is mounted at the top of the box shell, the 3D printing nozzle is mounted on the three-axis driving mechanism, and an avoiding opening is formed in the top of the box shell in a penetrating manner; two side plates are symmetrically and fixedly connected to the inner side of the box shell; a turnover mechanism is arranged in the box shell and connected with the printing platform, and a cleaning mechanism is arranged between the two side plates. Through mutual cooperation of a lifting component and an overturning transmission component in the overturning mechanism, the printing platform automatically completes 180-degree overturning in the lifting process, the top face of the printing platform is driven to be turned to be downward from upward, and convenience is provided for subsequent cleaning of the cleaning mechanism; and through the dual cleaning mode of the scraper and the sponge sleeve, the printing platform is cleaned more cleanly, and the problems that traditional manual operation is low in efficiency and the cleaning effect is not ideal are solved.

Description

Technical Field

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

[0002] 3D printing, also known as additive manufacturing, is a technology for manufacturing three-dimensional entities based on digital models by layer-by-layer stacking of materials such as plastics, metals, and resins. Its core process is as follows: First, a digital model is constructed using CAD software or 3D scanning. The model is then segmented into multiple two-dimensional cross-sections by slicing software. Finally, a 3D printer accumulates materials layer by layer according to the cross-section contours to form a shape. This technology breaks through the traditional subtractive manufacturing mode and has characteristics such as rapid prototyping and high customization. It is widely used in fields such as manufacturing (such as automotive and aerospace parts, molds), medical (such as customized implants), architecture, and art design, and is driving multi-industry transformations from prototyping to mass production.

[0003] In the field of 3D printing technology, after a 3D printing nozzle completes a printing operation on a printing platform, printing materials often remain on the surface of the printing platform. If the residues are not cleaned in time, it will not only have an adverse impact on the accuracy of subsequent printing, resulting in problems such as dimensional deviation and surface roughness of the printed parts. To prevent the remaining materials from affecting subsequent 3D printing, it is usually necessary to clean the residues on the printing platform. Traditional cleaning methods mostly rely on manual operations, and operators need to use tools such as scrapers and brushes to manually clean the printing platform. During manual operation, it is easy to cause these residues to fall to the ground and pollute the surrounding environment. Moreover, this manual operation method has obvious defects. On the one hand, the manual cleaning efficiency is low, especially for printing platforms with complex structures, and the cleaning process is time-consuming and laborious. On the other hand, the manual cleaning effect is unstable and is easily affected by the experience and strength of the operator, resulting in an unsatisfactory cleaning effect and affecting the subsequent printing quality. Therefore, it is necessary to provide a 3D printing device with a cleaning function to solve the above technical problems. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a 3D printing device with a cleaning function.

[0005] A 3D printing device with a cleaning function provided by the present invention includes a box shell, a 3D printing nozzle, and a printing platform. A three-axis driving mechanism is installed on the top of the box shell, and the 3D printing nozzle is installed on the three-axis driving mechanism. An avoidance opening is formed through the top of the box shell; two side plates are symmetrically and fixedly connected to the inner side of the box shell; a flipping mechanism is arranged inside the box shell, and the flipping mechanism is connected to the printing platform. A cleaning mechanism is arranged between the two side plates; the flipping mechanism is used to drive the printing platform to flip, so that the printing platform flips 180° while lifting; the cleaning mechanism is used to clean the materials on the printing platform, and the cleaning mechanism automatically supplies cleaning liquid to clean the printing platform and automatically stops supplying the cleaning liquid after the cleaning is completed.

[0006] Preferably, the flipping mechanism includes a lifting component and a flipping transmission component, and both the lifting component and the flipping transmission component are installed on the inner side of the box shell.

[0007] Preferably, the lifting component includes a fixed seat, the fixed seat is fixedly connected to the bottom of the printing platform, a rotating shaft is fixedly connected transversely through the fixed seat, eccentric columns are arranged at both ends of the rotating shaft and are rotatably connected thereto, two lifting frames are symmetrically and rotatably connected through the rotating shaft, and two electric cylinders corresponding to the lifting frames one by one are symmetrically and fixedly connected to the inner bottom of the box shell, and the telescopic end of the electric cylinder is fixedly connected to the bottom of the corresponding lifting frame.

[0008] Preferably, the flipping transmission component includes guide plates, two guide plates are symmetrically arranged on both sides inside the avoidance opening, the guide plates are fixedly connected to the box wall of the box shell, upper vertical guide grooves, upper inclined guide grooves, lower inclined guide grooves, and lower vertical guide grooves are formed through the guide plates, the bottom end of the upper vertical guide groove is communicated with the top end of the upper inclined guide groove, the bottom end of the upper inclined guide groove is communicated with the top end of the lower inclined guide groove, the bottom end of the lower inclined guide groove is communicated with the top end of the lower vertical guide groove, the upper inclined guide groove and the lower inclined guide groove are symmetrically arranged, and the eccentric column extends into the upper vertical guide groove.

[0009] Preferably, the cleaning mechanism includes a scraping component, a liquid supply component, and a plugging component. The scraping component is installed on the two side plates, the liquid supply component is installed on the scraping component, and the plugging component is installed on the liquid supply component.

[0010] Preferably, the scraping component includes a horizontal sliding rod, both ends of the horizontal sliding rod are fixedly connected to the side walls of two side plates, a first motor is fixedly connected to the side wall of one of the side plates, a translation frame is horizontally penetrated and slidably sleeved on the horizontal sliding rod, one end of the translation frame is horizontally penetrated and threadedly sleeved with a horizontal threaded rod, one end of the horizontal threaded rod is rotatably connected to the side wall of one of the side plates, and the other end of the horizontal threaded rod passes through the other side plate and is fixedly connected to the rotating end of the first motor. A scraper is fixedly connected to the front end frame wall of the translation frame.

[0011] Preferably, the liquid feeding component includes a liquid storage tank, the liquid storage tank is fixedly installed on the frame wall of the translation frame, an L-shaped pipe is communicated with the bottom end of the liquid storage tank, a liquid outlet pipe is horizontally penetrated and rotatably connected to the translation frame, one end of the liquid outlet pipe is communicated with a cylinder body, the other end of the liquid outlet pipe is closed, one end of the cylinder body is communicated with a rotating joint, one end of the rotating joint is communicated with the L-shaped pipe, the L-shaped pipe is fixedly connected to the translation frame, a sponge sleeve is fixedly sleeved on the outer side of the liquid outlet pipe, a plurality of liquid outlet holes are uniformly formed in the outer side of the liquid outlet pipe, the liquid outlet holes correspond to the sponge sleeve, a second motor is fixedly installed on one side of the frame wall of the translation frame, and the other end of the liquid outlet pipe passes through the translation frame and is fixedly connected to the rotating end of the second motor.

[0012] Preferably, the blocking component includes a sliding sleeve, the sliding sleeve is fixedly connected to the frame wall of the translation frame, a transverse moving rod is horizontally penetrated and slidably sleeved inside the sliding sleeve, one end of the transverse moving rod is fixedly connected to a connecting cross bar, one end of the connecting cross bar passes through the L-shaped pipe and the rotating joint and extends into the cylinder body and is fixedly connected to a blocking block. The blocking block can be made of rubber. One end of the blocking block is inserted into the liquid outlet pipe to block the liquid outlet pipe. The other end of the transverse moving rod is rotatably connected to a rotating wheel. A guiding strip is fixedly connected between the two side plates. A spring is sleeved on the outer side of the transverse moving rod. One end of the spring is fixedly connected to the side wall of the sliding sleeve, and the other end of the spring is fixedly connected to one end of the transverse moving rod.

[0013] Preferably, a first horizontal guiding portion, an inclined guiding portion and a second horizontal guiding portion are sequentially arranged on the guiding strip, and the wheel wall of the rotating wheel abuts against the first horizontal guiding portion.

[0014] Preferably, a collection box is arranged inside the box shell, the top of the collection box is open, and the collection box is arranged between the two side plates.

[0015] Compared with the related art, a 3D printing device with a cleaning function provided by the present invention has the following beneficial effects: 1. Through the cooperation of the lifting components and the flip transmission components in the flip mechanism, the electric cylinder drives the lifting frame to move up and down, driving the printing platform to extend or retract into the box shell through the avoidance opening, which is convenient for switching between printing operations and cleaning operations. The upper vertical guide groove, the upper oblique guide groove, the lower oblique guide groove and the lower vertical guide groove on the guide plate cooperate with the eccentric column. When the eccentric column enters the upper oblique guide groove from the upper vertical guide groove, the printing platform begins to flip, and completes a 90° flip after passing through the entire upper oblique guide groove; after entering the lower oblique guide groove, it continues to flip 90°, and finally achieves a 180° flip, so that the printing platform automatically completes a 180° flip during the lifting process, driving the top surface of the printing platform from upward to downward, so that the residual material can be more easily dropped into the collection box, which provides convenience for the subsequent cleaning of the cleaning mechanism, and the cleaning process is completed in the box shell, and the box shell is enclosed to prevent pollution to the surrounding environment, which is more environmentally friendly.

[0016] 2. The first motor in the scraping component drives the transverse threaded rod to rotate, so that the translation frame moves along the transverse sliding rod, driving the scraper to scrape the residual material on the surface of the printing platform, and the scraped material falls into the collection box to realize centralized waste treatment. The cleaning liquid in the liquid storage tank in the liquid delivery component flows into the liquid outlet pipe through the L-shaped tube and the rotating joint. The second motor drives the liquid outlet pipe to rotate, so that the sponge sleeve further cleans the printing platform by rotating friction. The liquid outlet hole cooperates with the sponge sleeve to accelerate the seepage of the cleaning liquid by centrifugal force. The double cleaning method of the scraper and the sponge sleeve makes the printing platform cleaned more thoroughly, solving the problem of low efficiency and unsatisfactory cleaning effect of traditional manual operation.

[0017] 3. Through the setting of the blocking components, the first horizontal guide part, the inclined guide part and the second horizontal guide part of the guide bar are linked with the rotating wheel and the spring to control the opening and closing of the blocking block. When the translation frame moves to the cleaning position, the spring pushes the blocking block to exit the liquid outlet pipe and automatically starts the supply of cleaning liquid. After cleaning, the blocking block is reset to prevent leakage of the cleaning liquid. During cleaning, the cleaning mechanism automatically supplies cleaning liquid to clean the printing platform, and automatically stops supplying cleaning liquid after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of a 3D printing device with a cleaning function provided by the present invention; Figure 2 This is a schematic diagram of the structure after the box shell is removed in the present invention; Figure 3 It is a structural schematic diagram of the lifting component in the present invention; Figure 4 It is a schematic diagram of the structure of the box shell after being cut open in the present invention; Figure 5 It is a structural schematic diagram of the guide strip in the present invention; Figure 6Schematic diagram of the structure after the printing platform enters the casing in the present invention; Figure 7 Schematic diagram of the structure at the guide plate in the present invention; Figure 8 Schematic diagram of the structure at the rotating shaft in the present invention; Figure 9 Schematic diagram of the structure at the cleaning mechanism in the present invention; Figure 10 Schematic diagram of the structure at the liquid delivery component in the present invention; Figure 11 Cross-sectional view of the liquid delivery component in the present invention; Figure 12 Schematic diagram of the structure at the liquid outlet pipe in the present invention; Figure 13 Schematic diagram of the structure at the blocking component in the present invention; Figure 14 Schematic diagram of the structure at the three-axis drive mechanism in the present invention.

[0019] Reference numerals in the figure: 1, casing; 2, three-axis drive mechanism; 21, X-axis moving component; 211, horizontal bracket; 212, X-axis drive motor; 213, X-axis threaded rod; 214, transverse sliding block; 22, Y-axis moving component; 221, vertical bracket; 222, vertical sliding rod; 223, Y-axis drive motor; 224, Y-axis threaded rod; 23, Z-axis moving component; 231, lifting bracket; 232, mounting seat; 233, driven pulley; 234, Z-axis drive motor; 235, driving pulley; 236, belt; 3, 3D printing nozzle; 4, flipping mechanism; 41, lifting component; 411, fixed seat; 412, eccentric column; 413, electric cylinder; 414, lifting frame; 415, rotating shaft; 42, flipping transmission component; 421, guide plate; 422, upper vertical guide groove; 423, upper inclined guide groove; 424, lower inclined guide groove; 425, lower vertical guide groove; 5, printing platform; 6, cleaning mechanism; 61, scraping component; 611, translation frame; 612, horizontal threaded rod; 613, first motor; 614, scraper; 615, horizontal sliding rod; 62, liquid delivery component; 621, liquid storage tank; 622, L-shaped pipe; 623, rotary joint; 624, cylinder body; 625, sponge sleeve; 626, liquid outlet pipe; 627, liquid outlet hole; 628, second motor; 63, blocking component; 631, sliding sleeve; 632, connecting cross bar; 633, spring; 634, transverse moving rod; 635, runner; 636, blocking block; 637, guide bar; 6371, first horizontal guide part; 6372, inclined guide part; 6373, second horizontal guide part; 8, side plate; 9, collection box; 10, avoidance opening. Detailed implementation manners

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Embodiment 1 Please refer to Figures 1 to 5 , a 3D printing device with a cleaning function, including a housing 1, a 3D printing nozzle 3 and a printing platform 5. A three-axis driving mechanism 2 is installed on the top of the housing 1, and the 3D printing nozzle 3 is installed on the three-axis driving mechanism 2. An avoidance opening 10 is penetrated through the top of the housing 1, and the size of the printing platform 5 is smaller than that of the avoidance opening 10, so that the printing platform 5 can pass through the avoidance opening 10 smoothly; two side plates 8 are symmetrically and fixedly connected to the inner side of the housing 1; a flipping mechanism 4 is arranged inside the housing 1, the flipping mechanism 4 is connected to the printing platform 5, and a cleaning mechanism 6 is arranged between the two side plates 8; the flipping mechanism 4 is used to drive the printing platform 5 to flip, so that the printing platform 5 flips 180° while lifting; the cleaning mechanism 6 is used to clean the material on the printing platform 5, and the cleaning mechanism 6 automatically supplies cleaning liquid to clean the printing platform 5 and automatically stops supplying the cleaning liquid after the cleaning is completed.

[0022] Furthermore, the flipping mechanism 4 includes a lifting component 41 and a flipping transmission component 42, and both the lifting component 41 and the flipping transmission component 42 are installed on the inner side of the housing 1; the lifting component 41 includes a fixed seat 411, the fixed seat 411 is fixedly connected to the bottom of the printing platform 5, a rotating shaft 415 is horizontally penetrated and fixedly connected to the fixed seat 411, eccentric columns 412 rotatably connected thereto are eccentrically arranged at both ends of the rotating shaft 415, and two lifting frames 414 are symmetrically penetrated and rotatably connected to the rotating shaft 415. Two electric cylinders 413 corresponding to the lifting frames 414 one by one are symmetrically and fixedly connected to the inner bottom of the housing 1, and the telescopic ends of the electric cylinders 413 are fixedly connected to the bottoms of the corresponding lifting frames 414.

[0023] In the above, the flipping mechanism 4 realizes the lifting and 180° flipping of the printing platform 5 through the cooperation of the lifting component 41 and the flipping transmission component 42. The electric cylinder 413 is used as the power source, and its telescopic end is fixedly connected to the lifting frame 414. When the electric cylinder 413 extends, it pushes the lifting frame 414 to move upward, drives the rotating shaft 415 and the fixed seat 411 to rise, and makes the printing platform 5 extend out of the housing 1 through the avoidance opening 10, facilitating 3D printing operations; when the electric cylinder 413 contracts, the lifting frame 414 moves downward, and the printing platform 5 falls back into the housing 1, triggering the flipping action.

[0024] Further, the flipping transmission member 42 includes a guiding plate 421. Two guiding plates 421 are symmetrically arranged on both inner sides of the avoiding opening 10. The guiding plate 421 is fixedly connected to the box wall of the box shell 1. The guiding plate 421 is penetrated with an upper vertical guiding groove 422, an upper inclined guiding groove 423, a lower inclined guiding groove 424 and a lower vertical guiding groove 425. The bottom end of the upper vertical guiding groove 422 communicates with the top end of the upper inclined guiding groove 423. The bottom end of the upper inclined guiding groove 423 communicates with the top end of the lower inclined guiding groove 424. The bottom end of the lower inclined guiding groove 424 communicates with the top end of the lower vertical guiding groove 425. The upper inclined guiding groove 423 and the lower inclined guiding groove 424 are symmetrically arranged. The eccentric column 412 extends into the upper vertical guiding groove 422. The upper vertical guiding groove 422, the upper inclined guiding groove 423, the lower inclined guiding groove 424 and the lower vertical guiding groove 425 are all adapted to the eccentric column 412.

[0025] In the above, the upper vertical guiding groove 422, the upper inclined guiding groove 423, the lower inclined guiding groove 424 and the lower vertical guiding groove 425 on the guiding plate 421 form a continuous guiding track. The eccentric column 412 moves in the upper vertical guiding groove 422, the upper inclined guiding groove 423, the lower inclined guiding groove 424 and the lower vertical guiding groove 425 on the guiding plate 421 and slides along the track when moving with the lifting frame 414. In the initial state, the eccentric column 412 is located at the top of the upper vertical guiding groove 422, and the top surface of the printing platform 5 faces upward. In the descending stage, the electric cylinder 413 contracts, and the eccentric column 412 vertically descends along the upper vertical guiding groove 422. At this time, the rotating shaft 415 does not rotate, and the printing platform 5 remains horizontal. When entering the upper inclined guiding groove 423, the eccentric column 412 starts to slide along the upper inclined guiding groove 423. Because the eccentric column 412 and the rotating shaft 415 are eccentrically arranged, the rotating shaft 415 is forced to rotate on the lifting frame 414, driving the printing platform 5 to flip 90°. When entering the lower inclined guiding groove 424, the eccentric column 412 continues to slide along the lower inclined guiding groove 424, and the rotating shaft 415 rotates another 90°, so that the printing platform 5 completes a 180° flip and the top surface faces downward. When entering the lower vertical guiding groove 425, the eccentric column 412 vertically descends, the rotating shaft 415 stops rotating, and the printing platform 5 remains horizontal, facilitating subsequent cleaning.

[0026] Embodiment 2 Further, refer to Figures 1 to 13, on the basis of the first embodiment, the cleaning mechanism 6 includes a scraping component 61, a liquid feeding component 62, and a blocking component 63. The scraping component 61 is installed on two side plates 8, the liquid feeding component 62 is installed on the scraping component 61, and the blocking component 63 is installed on the liquid feeding component 62; the scraping component 61 includes a transverse sliding rod 615, and both ends of the transverse sliding rod 615 are fixedly connected to the side walls of the two side plates 8. A first motor 613 is fixedly connected to the side wall of one of the side plates 8. A translation frame 611 is horizontally penetrated and slidably sleeved on the transverse sliding rod 615. One end of the translation frame 611 is horizontally penetrated and threadedly sleeved with a transverse threaded rod 612. One end of the transverse threaded rod 612 is rotatably connected to the side wall of one of the side plates 8, and the other end of the transverse threaded rod 612 passes through the other side plate 8 and is fixedly connected to the rotating end of the first motor 613. A scraper 614 is fixedly connected to the front end frame wall of the translation frame 611.

[0027] In the above, the cleaning mechanism 6 realizes automatic scraping and cleaning of the printing platform 5 through the coordinated action of the scraping component 61, the liquid feeding component 62, and the blocking component 63; during the scraping process of the scraping component 61, the first motor 613 drives the transverse threaded rod 612 to rotate, and the translation frame 611 moves through the threaded cooperation with the transverse threaded rod 612 and slides horizontally on the transverse sliding rod 615, driving the scraper 614 to approach or move away from the printing platform 5; when the printing platform 5 is flipped so that the top surface faces downward, the blade part of the scraper 614 contacts the surface of the printing platform 5. When the translation frame 611 moves horizontally, the blade part of the scraper 614 scrapes off the residual material, which falls into the lower collection box 9.

[0028] Furthermore, the liquid feeding component 62 includes a liquid storage tank 621, and the liquid storage tank 621 is fixedly installed on the frame wall of the translation frame 611. An L-shaped pipe 622 is communicated with the bottom end of the liquid storage tank 621. A liquid inlet pipe is provided on the liquid storage tank 621. A liquid outlet pipe 626 is horizontally penetrated and rotatably connected to the translation frame 611. One end of the liquid outlet pipe 626 is communicated with a cylinder body 624, and the other end of the liquid outlet pipe 626 is closed. One end of the cylinder body 624 is communicated with a rotating joint 623, and one end of the rotating joint 623 is communicated with the L-shaped pipe 622. The L-shaped pipe 622 is fixedly connected to the translation frame 611. A sponge sleeve 625 is fixedly sleeved on the outer side of the liquid outlet pipe 626. The sponge sleeve 625 is made of sponge with high strength and good wear resistance, such as polyurethane sponge or nylon sponge, etc. A plurality of liquid outlet holes 627 are uniformly opened on the outer side of the liquid outlet pipe 626, and the liquid outlet holes 627 correspond to the sponge sleeve 625. A second motor 628 is fixedly installed on one side of the frame wall of the translation frame 611. The other end of the liquid outlet pipe 626 passes through the translation frame 611 and is fixedly connected to the rotating end of the second motor 628.

[0029] As described above, the cleaning liquid in the liquid storage tank 621 flows into the cylinder 624 through the L-shaped pipe 622 and the rotary joint 623, and then enters the liquid outlet pipe 626. The sponge sleeve 625 outside the liquid outlet pipe 626 wraps the liquid outlet hole 627. The cleaning liquid penetrates through the liquid outlet hole 627 to the sponge sleeve 625. The second motor 628 drives the liquid outlet pipe 626 to rotate, and the sponge sleeve 625 cleans the surface of the printing platform 5 in a rotational friction manner. The centrifugal force generated by the rotation can accelerate the seepage of the cleaning liquid and improve the cleaning efficiency.

[0030] Further, the blocking component 63 includes a sliding sleeve 631. The sliding sleeve 631 is fixedly connected to the wall of the translation frame 611. A transverse rod 634 is horizontally and slidably sleeved inside the sliding sleeve 631. One end of the transverse rod 634 is fixedly connected to a connecting cross bar 632. One end of the connecting cross bar 632 passes through the L-shaped pipe 622 and the rotary joint 623 and extends into the cylinder 624 and is fixedly connected to a blocking block 636. The blocking block 636 can be made of rubber. One end of the blocking block 636 is inserted into the liquid outlet pipe 626 to block the liquid outlet pipe 626. The other end of the transverse rod 634 is rotatably connected to a runner 635. A guiding bar 637 is fixedly connected between the two side plates 8. A spring 633 is sleeved outside the transverse rod 634. One end of the spring 633 is fixedly connected to the side wall of the sliding sleeve 631, and the other end of the spring 633 is fixedly connected to one end of the transverse rod 634. The guiding bar 637 is sequentially provided with a first horizontal guiding portion 6371, an inclined guiding portion 6372, and a second horizontal guiding portion 6373. The wheel wall of the runner 635 abuts against the first horizontal guiding portion 6371.

[0031] As described above, in the initial state, the runner 635 abuts against the first horizontal guiding portion 6371 of the guiding bar 637, the spring 633 is in a compressed state, the blocking block 636 is inserted into the liquid outlet pipe 626 to block the liquid outlet hole 627 and prevent the cleaning liquid from leaking. When the translation frame 611 moves, the runner 635 slides along the inclined guiding portion 6372, and the elastic potential energy of the spring 633 begins to be released, elongating to push the transverse rod 634 to drive the blocking block 636 to withdraw from the liquid outlet pipe 626, and the cleaning liquid begins to be supplied into the liquid outlet pipe 626. After the cleaning is completed, when moving in the reverse direction, the runner 635 returns to the first horizontal guiding portion 6371, the spring 633 is compressed again, the blocking block 636 is reset to block the liquid outlet pipe 626, and the liquid supply stops.

[0032] Embodiment 3 Further, referring to Figures 1 to 14 , on the basis of Embodiment 2, a collection box 9 is arranged in the box shell 1. The top of the collection box 9 is open. The collection box 9 is arranged between the two side plates 8. A through hole for the collection box 9 to pass through is opened on the side wall of the box shell 1.

[0033] Among the above, the collection box 9 has an upward opening and is located between the two side plates 8. It is used to receive the residual materials that fall during the scraping process. The perforations on the side wall of the box shell 1 allow the collection box 9 to be pulled out, facilitating the centralized cleaning of waste materials and keeping the equipment clean.

[0034] Further, the three-axis drive mechanism 2 includes an X-axis moving member 21, a Y-axis moving member 22, and a Z-axis moving member 23. The X-axis moving member 21 includes a transverse bracket 211. The transverse bracket 211 is fixedly connected to the top of the box shell 1 and is located outside the avoidance opening 10. An X-axis drive motor 212 is fixedly connected to the side wall of the transverse bracket 211. Two transverse sliding blocks 214 are symmetrically and horizontally penetrated and slidably connected to the transverse bracket 211. An X-axis threaded rod 213 is horizontally penetrated and threadedly connected to one of the transverse sliding blocks 214. The X-axis threaded rod 213 is rotatably connected to the upper part of the transverse bracket 211. One end of the X-axis threaded rod 213 is fixedly connected to the output end of the X-axis drive motor 212.

[0035] Among the above, in the X-axis moving member 21, the X-axis drive motor 212 drives the X-axis threaded rod 213 to rotate, and the transverse sliding block 214 slides along the X-axis on the transverse bracket 211, realizing the transverse movement of the 3D printing nozzle 3 along the X-axis.

[0036] Further, the Y-axis moving member 22 includes a vertical bracket 221. Two vertical sliding rods 222 are symmetrically and fixedly connected to the wall of the vertical bracket 221. The two bottom sides of the vertical bracket 221 are respectively fixedly connected to the tops of the two transverse sliding blocks 214. A Y-axis drive motor 223 is fixedly connected to the wall of the vertical bracket 221. A Y-axis threaded rod 224 is rotatably connected to the wall of the vertical bracket 221. The bottom end of the Y-axis threaded rod 224 is fixedly connected to the output end of the Y-axis drive motor 223.

[0037] Among the above, in the Y-axis moving member 22, the Y-axis drive motor 223 drives the Y-axis threaded rod 224 to rotate, and the lifting bracket 231 moves up and down along the vertical sliding rod 222, realizing the longitudinal movement of the 3D printing nozzle 3 along the Y-axis.

[0038] The Z-axis moving member 23 includes a lifting bracket 231. The lifting bracket 231 is vertically and slidably connected through the vertical slide rod 222 and is vertically threaded and sleeved on the Y-axis threaded rod 224. A mounting seat 232 is horizontally and slidably connected through the lifting bracket 231. The 3D printing nozzle 3 is fixedly installed on the side wall of the mounting seat 232. A Z-axis driving motor 234 is fixedly installed on one side of the lifting bracket 231. The rotating end of the Z-axis driving motor 234 is fixedly connected with a driving pulley 235. A plurality of driven pulleys 233 are rotatably connected to the lifting bracket 231. A belt 236 is commonly sleeved on the plurality of driven pulleys 233. The belt 236 is sleeved on the driving pulley 235 and is in driving connection with it. The mounting seat 232 is fixedly connected to the upper belt wall of the belt 236.

[0039] In the above, the Z-axis driving motor 234 in the Z-axis moving member 23 drives the mounting seat 232 to slide along the lifting bracket 231 through the belt 236, so as to realize the movement of the 3D printing nozzle 3 in the Z-axis direction. The three-axis coordinated movement enables the 3D printing nozzle 3 to be accurately positioned in the three-dimensional space to complete complex printing paths.

[0040] Furthermore, the X-axis driving motor 212, the Y-axis driving motor 223, the Z-axis driving motor 234, the driving pulley 235, the 3D printing nozzle 3, the electric cylinder 413, the first motor 613 and the second motor 628 are all electrically connected to an external control system through wires. The 3D printing nozzle 3 is connected to an external extrusion device through a pipeline.

[0041] The working principle of a 3D printing device with a cleaning function provided by the present invention is as follows: During specific use, start the X-axis drive motor 212, the Y-axis drive motor 223, and the Z-axis drive motor 234. The rotation of the X-axis drive motor 212 drives the rotation of the X-axis threaded rod 213. The rotation of the X-axis threaded rod 213 causes the transverse slider 214 to slide along the X-axis direction on the transverse bracket 211, thereby driving the Y-axis moving component 22 and the Z-axis moving component 23 to move the 3D printing nozzle 3 along the X-axis direction. The Y-axis drive motor 223 drives the rotation of the Y-axis threaded rod 224. The rotation of the Y-axis threaded rod 224 drives the lifting bracket 231 to slide vertically on the vertical slide rod 222, causing the Z-axis moving component 23 to move along the Y-axis direction, and further driving the 3D printing nozzle 3 to move along the Y-axis direction. The Z-axis drive motor 234 drives the rotation of the driving pulley 235. The driving pulley 235 drives the rotation of the belt 236. At the same time, the driven pulley 233 rotates assistingly with the movement of the belt 236. While the belt 236 rotates, it drives the mounting seat 232 to move along the Z-axis direction, thereby driving the 3D printing nozzle 3 to move in the Z-axis direction. Therefore, through the mutual cooperation of the X-axis moving component 21, the Y-axis moving component 22, and the Z-axis moving component 23 in the three-axis drive mechanism 2, the 3D printing nozzle 3 is enabled to move along the X, Y, and Z axes, thereby driving the 3D printing nozzle 3 to move to any position in the printing area. The 3D printing nozzle 3 extrudes the material onto the printing platform 5 to achieve the 3D printing action.

[0042] A cleaning liquid for cleaning the flipping mechanism 4 is stored in the liquid storage tank 621. After the 3D printing is completed, when it is necessary to clean the printing material remaining on the top surface of the printing platform 5, the electric cylinder 413 is started. The telescopic end of the electric cylinder 413 contracts to drive the lifting frame 414 to move downward. The lifting frame 414 drives the rotating shaft 415 to move the fixed seat 411 downward. At the same time, the eccentric column 412 moves downward along the upper vertical guide groove 422. When the eccentric column 412 moves in the upper vertical guide groove 422, the top surface of the printing platform 5 remains upward. As the telescopic end of the electric cylinder 413 continues to contract, the eccentric column 412 enters the lower inclined guide groove 424 from the upper vertical guide groove 422. At this time, under the guiding action of the lower inclined guide groove 424, the eccentric column 412 drives the rotating shaft 415 to rotate on the lifting frame 414. While the rotating shaft 415 rotates, it drives the fixed seat 411 to rotate the printing platform 5 by 90°. Subsequently, the eccentric column 412 enters the lower inclined guide groove 424 from the upper inclined guide groove 423. The eccentric column 412 drives the rotating shaft 415 to rotate further. While the rotating shaft 415 rotates, it drives the fixed seat 411 to rotate the printing platform 5 by 90° again. At this time, the printing platform 5 rotates 180°. Then, the eccentric column 412 enters the lower vertical guide groove 425. At this time, the eccentric column 412 stops moving. After the eccentric column 412 enters the lower vertical guide groove 425, the eccentric column 412 moves in the vertical direction, the rotating shaft 415 stops rotating, and then the printing platform 5 stops rotating. At this time, the top surface of the printing platform 5 changes from the upward state to the downward state and remains horizontal. Finally, the top surface of the printing platform 5 after it faces downward is kept at the same height as the upper part of the scraper 614. A sharp blade part is provided on the upper part of the scraper 614, which can scrape off the material on the printing platform 5.

[0043] Start the first motor 613. The first motor 613 drives the transverse threaded rod 612 to rotate. Under the threaded connection and cooperation between the transverse threaded rod 612 and the translation frame 611, and the sliding connection and cooperation between the transverse slide rod 615 and the translation frame 611, the rotation of the transverse threaded rod 612 makes the translation frame 611 move horizontally. While the translation frame 611 moves, it drives the scraper 614 to move horizontally in the direction close to the printing platform 5. The upper part of the scraper 614 contacts the top surface of the printing platform 5 after its top surface faces downward. The scraper 614 scrapes off the material on the top surface of the printing platform 5, and the scraped-off material falls into the collection box 9 for collection.

[0044] While the translation frame 611 moves, it drives the sliding sleeve 631 to move synchronously. The sliding sleeve 631 drives the rotating wheel 635 to move synchronously. In the initial state, the rotating wheel 635 abuts against the first horizontal guiding portion 6371, and the spring 633 is in an elastically compressed state. As the translation frame 611 moves, the rotating wheel 635 enters the inclined guiding portion 6372 from the first horizontal guiding portion 6371. The rotating wheel 635 remains in contact with the inclined guiding portion 6372. When the rotating wheel 635 moves along the inclined guiding portion 6372, the elastic potential energy of the spring 633 is gradually released. The spring 633 elongates and pushes the transverse rod 634 to move away from the cylinder body 624. At this time, the transverse rod 634 drives the connecting cross rod 632 and the blocking block 636 to move, so that the blocking block 636 moves away from the liquid outlet pipe 626. The blocking block 636 no longer blocks one end of the liquid outlet pipe 626. The cleaning liquid in the liquid storage tank 621, under the action of gravity, sequentially passes through the L-shaped pipe 622, the rotating joint 623, and the cylinder body 624 and enters the liquid outlet pipe 626. Subsequently, the cleaning liquid enters the sponge sleeve 625 through the liquid outlet hole 627. The sponge sleeve 625 adsorbs the cleaning liquid. At the same time, the second motor 628 is started. The rotating end of the second motor 628 rotates to drive the liquid outlet pipe 626 to rotate. The liquid outlet pipe 626 drives the sponge sleeve 625 to rotate synchronously. The sponge sleeve 625 contacts the top surface of the printing platform 5 after it faces downward. The sponge sleeve 625 rotates to clean the top surface of the printing platform 5. When the liquid outlet pipe 626 rotates, a centrifugal force is generated to make the cleaning liquid more easily enter the sponge sleeve 625 through the liquid outlet hole 627. The sponge sleeve 625 cooperates with the cleaning liquid to clean the printing platform 5 after being cleaned by the scraper 614 in a rotational friction manner, so that the printing platform 5 is cleaned more thoroughly. After the cleaning is completed, operate in the reverse manner as described above to reset each component and prepare for the next 3D printing.

[0045] The above are only the embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A 3D printing device with a cleaning function, comprising a box shell (1), a 3D printing nozzle (3) and a printing platform (5). A three-axis drive mechanism (2) is installed on the top of the box shell (1), and the 3D printing nozzle (3) is installed on the three-axis drive mechanism (2), characterized in that, A relief opening (10) is formed through the top of the box shell (1); Two side plates (8) are symmetrically connected to the inner side of the box shell (1); A turning mechanism (4) is arranged inside the box shell (1), the turning mechanism (4) is connected to the printing platform (5), and a cleaning mechanism (6) is arranged between the two side plates (8); The turning mechanism (4) is used to drive the printing platform (5) to turn, so that the printing platform (5) turns 180° while lifting; The cleaning mechanism (6) is used to clean the materials on the printing platform (5), the cleaning mechanism (6) automatically supplies cleaning liquid to clean the printing platform (5), and automatically stops supplying cleaning liquid after the cleaning is completed.

2. The 3D printing device with a cleaning function according to claim 1, characterized in that, The turning mechanism (4) includes a lifting component (41) and a turning transmission component (42), and both the lifting component (41) and the turning transmission component (42) are installed on the inner side of the box shell (1).

3. The 3D printing device with a cleaning function according to claim 2, wherein, The lifting component (41) includes a fixed seat (411), the fixed seat (411) is connected to the bottom of the printing platform (5), a rotating shaft (415) is horizontally connected through the fixed seat (411), eccentric columns (412) rotatably connected thereto are eccentrically arranged at both ends of the rotating shaft (415), two lifting frames (414) are symmetrically and rotatably connected through the rotating shaft (415), and two electric cylinders (413) corresponding to the lifting frames (414) one by one are symmetrically connected to the inner bottom of the box shell (1), and the telescopic end of the electric cylinder (413) is connected to the bottom of the corresponding lifting frame (414).

4. A 3D printing device with a cleaning function according to claim 3, characterized in that, The turning transmission component (42) includes guide plates (421), two guide plates (421) are symmetrically arranged on both inner sides of the relief opening (10), the guide plates (421) are connected to the box wall of the box shell (1), upper vertical guide grooves (422), upper inclined guide grooves (423), lower inclined guide grooves (424) and lower vertical guide grooves (425) are formed through the guide plates (421), the bottom end of the upper vertical guide groove (422) is communicated with the top end of the upper inclined guide groove (423), the bottom end of the upper inclined guide groove (423) is communicated with the top end of the lower inclined guide groove (424), the bottom end of the lower inclined guide groove (424) is communicated with the top end of the lower vertical guide groove (425), the upper inclined guide groove (423) and the lower inclined guide groove (424) are symmetrically arranged, and the eccentric column (412) extends into the upper vertical guide groove (422).

5. A 3D printing device with a cleaning function according to claim 1, characterized in that The cleaning mechanism (6) includes a scraping component (61), a liquid supply component (62) and a blocking component (63), the scraping component (61) is installed on the two side plates (8), the liquid supply component (62) is installed on the scraping component (61), and the blocking component (63) is installed on the liquid supply component (62).

6. The 3D printing device with a cleaning function according to claim 5, wherein The scraping member (61) includes a transverse sliding rod (615). Both ends of the transverse sliding rod (615) are connected to the side walls of two side plates (8). A first motor (613) is connected to the side wall of one of the side plates (8). A translation frame (611) is horizontally penetrated and slidably sleeved on the transverse sliding rod (615). One end of the translation frame (611) is horizontally penetrated and threadedly sleeved with a transverse threaded rod (612). One end of the transverse threaded rod (612) is rotatably connected to the side wall of one of the side plates (8). The other end of the transverse threaded rod (612) passes through the other side plate (8) and is connected to the rotating end of the first motor (613). A scraper (614) is connected to the front frame wall of the translation frame (611).

7. A 3D printing device with a cleaning function according to claim 6, characterized in that, The liquid supply member (62) includes a liquid storage tank (621). The liquid storage tank (621) is installed on the frame wall of the translation frame (611). An L-shaped pipe (622) is communicated with the bottom end of the liquid storage tank (621). A liquid outlet pipe (626) is horizontally penetrated and rotatably connected to the translation frame (611). One end of the liquid outlet pipe (626) is communicated with a cylinder body (624). The other end of the liquid outlet pipe (626) is closed. One end of the cylinder body (624) is communicated with a rotating joint (623). One end of the rotating joint (623) is communicated with the L-shaped pipe (622). The L-shaped pipe (622) is connected to the translation frame (611). A sponge sleeve (625) is sleeved on the outer side of the liquid outlet pipe (626). A plurality of liquid outlet holes (627) are evenly formed in the outer side of the liquid outlet pipe (626). The liquid outlet holes (627) correspond to the sponge sleeve (625). A second motor (628) is installed on one side of the frame wall of the translation frame (611). The other end of the liquid outlet pipe (626) passes through the translation frame (611) and is connected to the rotating end of the second motor (628).

8. A 3D printing device with a cleaning function according to claim 7, characterized in that, The blocking member (63) includes a sliding sleeve (631). The sliding sleeve (631) is connected to the frame wall of the translation frame (611). A transverse moving rod (634) is horizontally penetrated and slidably sleeved in the inner side of the sliding sleeve (631). One end of the transverse moving rod (634) is connected with a connecting cross bar (632). One end of the connecting cross bar (632) passes through the L-shaped pipe (622) and the rotating joint (623) and extends into the cylinder body (624) and then is connected with a blocking block (636). The other end of the transverse moving rod (634) is rotatably connected with a rotating wheel (635). A guiding strip (637) is fixedly connected between the two side plates (8). A spring (633) is sleeved on the outer side of the transverse moving rod (634). One end of the spring (633) is connected to the side wall of the sliding sleeve (631). The other end of the spring (633) is connected to one end of the transverse moving rod (634).

9. A 3D printing device with a cleaning function according to claim 8, wherein, A first horizontal guiding portion (6371), an inclined guiding portion (6372) and a second horizontal guiding portion (6373) are sequentially arranged on the guiding strip (637). The wheel wall of the rotating wheel (635) abuts against the first horizontal guiding portion (6371).

10. A 3D printing device with a cleaning function according to claim 1, characterized in that, A collection box (9) is arranged inside the box shell (1). The top of the collection box (9) is open, and the collection box (9) is arranged between two side plates (8).

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