Projection structure for high-coverage 3D printer

Abstract

This invention discloses a projection structure for a high-coverage 3D printer, including a printer base with a projection mechanism inside. The upper surface of the printer base has a lifting system, which includes a vertical plate fixedly connected to the printer base. One side of the vertical plate has a groove through which a slider slides. One side of the slider is fixedly connected to a support plate, and the lower surface of the support plate is fixedly connected to a molding plate. A liquid frame is fixedly connected to the upper surface of the printer base, containing resin. A cleaning device is provided on one side of the liquid frame. By providing the cleaning device, the liquid frame can be cleaned to remove dust, maintaining its cleanliness and preventing dust from affecting the projection effect and accuracy of the printer.

Description

Technical Field

[0001] This invention relates to the field of projection technology for printers, specifically a projection structure for a high-coverage 3D printer. Background Technology

[0002] DLP (Digital Light Processing) is a technology that projects light onto an image signal after digital processing. It is based on the Digital Micromirror Device (DMD) developed by Texas Instruments to display visual digital information. The basic principle of DLP 3D printing technology is that a digital light source projects light onto the surface of a liquid photosensitive resin layer by layer, which is then cured and solidified to form the final product.

[0003] The light from the projection mechanism passes through the liquid frame of the translucent material, and the model is formed on the molding plate. However, during use, dust easily falls into the liquid frame, which blocks the light from the projection mechanism, affects the penetrability of the liquid frame, and affects the printer's ability to print the model. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a high-coverage projection structure for 3D printers, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A projection structure for a high-coverage 3D printer includes a printer base with a projection mechanism inside. The upper surface of the printer base has a lifting system, which includes a vertical plate fixedly connected to the printer base. One side of the vertical plate has a groove through which a slider is slidably connected. One side of the slider is fixedly connected to a support plate, and the lower surface of the support plate is fixedly connected to a molding plate. A liquid frame is fixedly connected to the upper surface of the printer base, containing resin. One side of the liquid frame has a cleaning device for cleaning the liquid frame.

[0007] As a preferred embodiment of the present invention, the cleaning device includes a guide rail fixed to the upper surface of the printer base. A support rod is slidably connected inside the guide rail, and a cover plate is fixedly connected to one end of the support rod. The cover plate has the same shape as the liquid frame and is slightly larger than the liquid frame. The cover plate is provided with multiple delivery pipes and a spherical groove. A frustum is rotatably connected inside the spherical groove. The side of the frustum is arc-shaped and fits into the spherical groove. A through groove is provided on the frustum. A round rod is slidably connected inside the through groove. A cleaning brush is fixedly connected to the lower end of the round rod. A ball bearing is rotatably connected to the side wall of the through groove. A spiral groove is provided on the side wall of the round rod, and the ball bearing is located inside the spiral groove.

[0008] As a preferred embodiment of the present invention, a vertical plate is fixedly connected to the upper surface of the circular platform, a horizontal plate is fixedly connected to one side of the vertical plate, an electric push rod is fixedly connected to the upper surface of the horizontal plate, the telescopic rod of the electric push rod passes through the horizontal plate, the telescopic rod of the electric push rod is rotatably connected to the circular rod, and a rubber ring is fixedly connected to the lower surface of the cover plate.

[0009] In a preferred embodiment of the present invention, a rotating ring is rotatably connected to the upper surface of the cover plate, and a plurality of first arc-shaped blocks are fixedly connected to the side wall of the rotating ring. The first arc-shaped blocks are arranged in an array. A fixing ring is fixedly connected to the upper surface of the frustum. A second arc-shaped block is fixedly connected to the outer side of the fixing ring. The first arc-shaped blocks and the second arc-shaped blocks cooperate with each other. A mounting frame is fixedly connected to the upper surface of the cover plate. A motor is fixedly connected to the mounting frame. A gear is fixedly connected to the main shaft of the motor. A gear ring is fixedly connected to the outer side of the rotating ring. The gear ring meshes with the gear.

[0010] As a preferred embodiment of the present invention, one side of the liquid frame is connected to an output pipe, the upper surface of the output pipe is provided with an installation groove, a rotating shaft is rotatably connected in the installation groove, a rotating plate is fixedly connected to the outer circle of the rotating shaft, and a torsion spring is provided at the connection between the rotating shaft and the output pipe.

[0011] As a preferred embodiment of the present invention, one end of the rotating shaft passes through the output pipe, the lower surface of the support rod is fixedly connected to the hanging rod, one side of the hanging rod is fixedly connected to the push rod, and one end of the rotating shaft is fixedly connected to the square plate, which is located outside the output pipe.

[0012] Compared with the prior art, the present invention provides a high-coverage projection structure for 3D printers, which has the following advantages:

[0013] 1. The projection structure for a high-coverage 3D printer is equipped with a cleaning device. The cleanliness of the liquid frame affects the projection effect of the projection mechanism. When there is a lot of dust in the liquid frame, the cleaning device can clean the liquid frame to remove the dust, maintain the cleanliness of the liquid frame, and prevent dust from affecting the projection effect of the printer and the accuracy of the printer.

[0014] 2. This high-coverage projection structure for 3D printers uses ball bearings and an electric push rod to push a circular rod downwards. During this movement, the ball bearings roll along a spiral groove, forcing the circular rod to rotate as it descends. This rotation of the cleaning brush cleans the sidewalls and bottom of the liquid frame. Simultaneously, a water pump connected to the delivery pipe injects water into the liquid frame, flushing it and preventing residue from remaining on the sidewalls. A rubber ring prevents water from splashing out and contaminating the printer, improving the cleaning effect on the liquid frame, increasing its light transmittance, and enhancing the projection effect.

[0015] 3. This high-coverage projection structure for 3D printers, by setting a first arc block and a second arc block, the motor is turned on to drive the rotating ring to rotate. When multiple first arc blocks contact the second arc block in sequence, the round rod of the first arc block is tilted, and the truncated cone rotates in sequence in various directions on the spherical groove, causing the cleaning brush to tilt in different directions to clean the four corners of the liquid frame, reduce the residue of stains, and improve the cleaning effect;

[0016] 4. This projection structure for a high-coverage 3D printer uses a push rod. As the cover plate moves above the liquid frame, the push rod pushes the square plate, causing the rotating shaft to rotate. The rotating shaft then drives the rotating plate to rotate, opening the output pipe and allowing the liquid inside the liquid frame to flow out. Afterward, the cover plate moves directly above the liquid frame, where the rubber ring contacts and seals the liquid frame. Then, a cleaning brush begins to clean the inside of the liquid frame. During this process, the output pipe is open, and the delivery pipe is connected to a water pump to inject water into the liquid frame. The water flow flushes the dirt out of the liquid frame, achieving immediate discharge and preventing dirt from accumulating at the bottom of the liquid frame. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the device;

[0018] Figure 2 A three-dimensional structural diagram of the cleaning device and the liquid container;

[0019] Figure 3 This is a schematic diagram of the cleaning device.

[0020] Figure 4 A structural diagram of a cleaning brush;

[0021] Figure 5 This is a cross-sectional view of the liquid container;

[0022] Figure 6 for Figure 5 Enlarged structural diagram of point A;

[0023] Figure 7 This is a cross-sectional schematic diagram of the cleaning device;

[0024] Figure 8 This is a schematic diagram showing the cleaning device in use.

[0025] In the diagram: 1. Printer base; 11. Liquid container; 2. Lifting system; 21. Vertical plate; 22. Slider; 23. Support plate; 24. Forming plate; 3. Cleaning device; 31. Guide rail; 32. Support rod; 33. Cover plate; 34. Conveyor pipe; 35. Spherical groove; 36. Frustum; 38. Round rod; 39. Cleaning brush; 301. Ball bearing; 302. Spiral groove; 4. Vertical plate; 41. Horizontal plate; 42. Electric push rod; 43. Rubber ring; 44. Rotating ring; 45. First arc block; 46. Fixing ring; 47. Second arc block; 48. Mounting bracket; 49. Motor; 401. Gear; 402. Gear ring; 403. Output pipe; 404. Rotating shaft; 405. Rotating plate; 406. Hanging rod; 407. Push rod; 408. Square plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-8 In this implementation plan:

[0028] A projection structure for a high-coverage 3D printer includes a printer base 1, a projection mechanism inside the printer base 1, a lifting system 2 on the upper surface of the printer base 1, the lifting system 2 including a vertical plate 21, the vertical plate 21 being fixedly connected to the printer base 1, a sliding groove on one side of the vertical plate 21, a slider 22 being slidably connected in the sliding groove, a support plate 23 being fixedly connected to one side of the slider 22, a molding plate 24 being fixedly connected to the lower surface of the support plate 23, a liquid frame 11 being fixedly connected to the upper surface of the printer base 1, resin being placed inside the liquid frame 11, and a cleaning device 3 being provided on one side of the liquid frame 11 for cleaning the liquid frame 11.

[0029] This device is used to improve the projection effect of the printer. The projection mechanism is located inside the printer base 1. The light from the projection mechanism passes through the liquid frame 11 of the light-transmitting material, and the model is formed on the forming plate 24. However, before printing, it is necessary to observe the cleanliness of the inside of the liquid frame 11. The cleanliness of the liquid frame 11 affects the projection effect of the projection mechanism. When there is a lot of dust inside the liquid frame 11, the liquid frame 11 can be cleaned by the cleaning device 3 to remove the dust and maintain the cleanliness of the liquid frame 11, so as to avoid the dust affecting the projection effect of the printer and the accuracy of the printer.

[0030] The cleaning device 3 includes a guide rail 31, which is fixed to the upper surface of the printer base 1. A support rod 32 is slidably connected inside the guide rail 31. One end of the support rod 32 is fixedly connected to a cover plate 33. The cover plate 33 has the same shape as the liquid frame 11 and is slightly larger than the liquid frame 11. The cover plate 33 is provided with multiple delivery pipes 34 and a spherical groove 35. A frustum 36 is rotatably connected inside the spherical groove 35. The side of the frustum 36 is arc-shaped and fits against the spherical groove 35. A through groove is provided on the frustum 36, and a round rod 38 is slidably connected inside the through groove. The lower end of the round rod 38 is fixedly connected to the cleaning brush 39, and the side wall of the through groove is rotatably connected to the ball bearing 301. The side wall of the round rod 38 is provided with a spiral groove 302, and the ball bearing 301 is located in the spiral groove 302. The upper surface of the truncated cone 36 is fixedly connected to the vertical plate 4, and one side of the vertical plate 4 is fixedly connected to the horizontal plate 41. The upper surface of the horizontal plate 41 is fixedly connected to the electric push rod 42, and the telescopic rod of the electric push rod 42 passes through the horizontal plate 41. The telescopic rod of the electric push rod 42 is rotatably connected to the round rod 38. The lower surface of the cover plate 33 is fixedly connected to the rubber ring 43.

[0031] When the printer is printing, the cleaning device 3 is located on one side of the liquid frame 11, but the cleaning device 3 is higher than the height of the liquid frame 11. When it is necessary to clean the inside of the liquid frame 11, the liquid inside the liquid frame 11 is first extracted. Then, the cover plate 33 is pushed to move above the liquid frame 11. At this time, the rubber ring 43 contacts the upper surface of the liquid frame 11 to form a sealed space. Then, the electric push rod 42 pushes the round rod 38, causing the round rod 38 to move downward. When moving, since the ball 301 always rolls along the spiral groove 302, it forces the round rod 38 to rotate when it descends, causing the cleaning brush 39 to rotate when it descends, cleaning the stains on the side walls and bottom of the liquid frame 11. At the same time, the delivery pipe 34 is connected to the water pump to inject water into the liquid frame 11 to flush the liquid frame 11 and prevent stains from remaining on the side walls of the liquid frame 11. The rubber ring 43 can prevent water from splashing out and contaminating the printer, improving the cleaning effect of the liquid frame 11, improving the light transmittance of the liquid frame 11, and improving the projection effect.

[0032] A rotating ring 44 is rotatably connected to the upper surface of the cover plate 33. Multiple first arc-shaped blocks 45 are fixedly connected to the side wall of the rotating ring 44. The first arc-shaped blocks 45 are arranged in an array. A fixing ring 46 is fixedly connected to the upper surface of the frustum 36. A second arc-shaped block 47 is fixedly connected to the outer side of the fixing ring 46. The first arc-shaped blocks 45 and the second arc-shaped blocks 47 cooperate with each other. A mounting bracket 48 is fixedly connected to the upper surface of the cover plate 33. A motor 49 is fixedly connected to the mounting bracket 48. A gear 401 is fixedly connected to the main shaft of the motor 49. A toothed ring 402 is fixedly connected to the outer side of the rotating ring 44. The toothed ring 402 meshes with the gear 401.

[0033] Because the liquid frame 11 is square, when the cleaning brush 39 descends and rotates to clean, it cannot reach the four corners of the liquid frame 11, forming a cleaning dead corner that easily causes dirt residue. At this time, the motor 49 is turned on to drive the rotating ring 44 to rotate. When multiple first arc blocks 45 contact the second arc block 47 in sequence, the first arc block 45 causes the round rod 38 to tilt, and the truncated cone 36 rotates in sequence in all directions on the spherical groove 35, causing the cleaning brush 39 to tilt in different directions to clean the four corners of the liquid frame 11, reduce the residue of dirt, and improve the cleaning effect.

[0034] One side of the liquid frame 11 is connected to the output pipe 403. The upper surface of the output pipe 403 is provided with an installation groove. The rotating shaft 404 is rotatably connected in the installation groove. The outer circle of the rotating shaft 404 is fixedly connected to the rotating plate 405. A torsion spring is provided at the connection between the rotating shaft 404 and the output pipe 403. One end of the rotating shaft 404 passes through the output pipe 403. The lower surface of the support rod 32 is fixedly connected to the hanging rod 406. One side of the hanging rod 406 is fixedly connected to the push rod 407. One end of the rotating shaft 404 is fixedly connected to the square plate 408, which is located outside the output pipe 403.

[0035] Before cleaning, as the cover plate 33 moves above the liquid frame 11, the push rod 407 pushes the square plate 408, causing the rotating shaft 404 to rotate. The rotating shaft 404 drives the rotating plate 405 to rotate, opening the output pipe 403 and allowing the liquid inside the liquid frame 11 to flow out. Then, the cover plate 33 moves directly above the liquid frame 11, at which point the rubber ring 43 contacts the liquid frame 11 and seals it. Then, the cleaning brush 39 begins to clean the inside of the liquid frame 11. During this process, the output pipe 403 is in the open state, and the delivery pipe 34 is connected to the water pump to inject water into the liquid frame 11. The water flow flushes the stains out of the liquid frame 11, achieving the purpose of immediate discharge and preventing the stains from accumulating at the bottom of the liquid frame 11. After cleaning, the cover plate 33 is reset, the push rod 407 disengages from the square plate 408, and under the action of the torsion spring, the rotating plate 405 closes the output pipe 403. At this time, new liquid is injected into the liquid frame 11 for printing.

[0036] The working principle and usage process of this invention: Pushing the cover plate 33 moves it above the liquid frame 11. At this time, the rubber ring 43 contacts the upper surface of the liquid frame 11, forming a sealed space. During this process, the push rod 407 pushes the square plate 408, causing the rotating shaft 404 to rotate. The rotating shaft 404 drives the rotating plate 405 to rotate, opening the output pipe 403 and allowing the old liquid to flow out. The electric push rod 42 pushes the round rod 38, causing it to move downwards. During this movement, the cleaning brush 39 rotates as it descends, cleaning the stains on the side walls and bottom of the liquid frame 11. Simultaneously, the motor 49 starts, driving the rotating plate 405 to rotate. When the rotating ring 44 rotates, and multiple first arc blocks 45 sequentially contact the second arc block 47, the first arc block 45 causes the round rod 38 to tilt, and the truncated cone 36 rotates sequentially in all directions on the spherical groove 35, causing the cleaning brush 39 to tilt in different directions to clean the four corners of the liquid frame 11. The delivery pipe 34 is connected to a water pump to inject water into the liquid frame 11 to flush the liquid frame 11. After cleaning, the cover plate 33 is reset, the push rod 407 disengages from the square plate 408, and under the action of the torsion spring, the rotating plate 405 closes the output pipe 403. At this time, new liquid is injected into the liquid frame 11 for printing.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A projection structure for a high coverage 3D printer, characterized in that: The utility model provides a printer base (1), be equipped with projection mechanism in printer base (1), the upper surface of printer base (1) is equipped with lifting system (2), lifting system (2) includes riser (21), riser (21) is fixedly connected with printer base (1), one side of riser (21) is equipped with sliding slot, the sliding slot is connected with sliding block (22) inside slidingly, one side of sliding block (22) is fixedly connected with support plate (23), the lower surface of support plate (23) is fixedly connected with forming plate (24), the upper surface of printer base (1) is fixedly connected with liquid frame (11), and resin is placed in liquid frame (11), one side of liquid frame (11) is equipped with cleaning device (3), and cleaning device (3) is used for cleaning liquid frame (11); The cleaning device (3) includes a guide rail (31) fixed on the upper surface of the printer base (1), a support rod (32) slidingly connected in the guide rail (31), one end of the support rod (32) fixedly connected with a cover plate (33), the cover plate (33) is the same shape as the liquid frame (11) and slightly larger than the liquid frame (11), a plurality of delivery pipes (34) are provided on the cover plate (33), a spherical groove (35) is provided on the cover plate (33), a circular table (36) is rotatably connected in the spherical groove (35), the side of the circular table (36) is arc-shaped and fits the spherical groove (35), a through groove is provided on the circular table (36), a circular rod (38) is slidingly connected in the through groove, a cleaning brush (39) is fixedly connected to the lower end of the circular rod (38), a side wall of the through groove rotatably connected with a ball (301), a helical groove (302) is provided on the side wall of the circular rod (38), and the ball (301) is located in the helical groove (302). A vertical plate (4) is fixedly connected to the upper surface of the circular table (36), one side of the vertical plate (4) is fixedly connected with a horizontal plate (41), the upper surface of the horizontal plate (41) is fixedly connected with an electric push rod (42), the telescopic rod of the electric push rod (42) penetrates through the horizontal plate (41), the telescopic rod of the electric push rod (42) is rotatably connected with the circular rod (38), and the lower surface of the cover plate (33) is fixedly connected with a rubber ring (43). A rotating ring (44) is rotatably connected to the upper surface of the cover plate (33), a plurality of first arc-shaped blocks (45) are fixedly connected to the side wall of the rotating ring (44), the first arc-shaped blocks (45) are arranged in an array, a fixed ring (46) is fixedly connected to the upper surface of the circular table (36), a second arc-shaped block (47) is fixedly connected to the outer side of the fixed ring (46), the first arc-shaped blocks (45) cooperate with the second arc-shaped block (47), a mounting bracket (48) is fixedly connected to the upper surface of the cover plate (33), a motor (49) is fixedly connected to the mounting bracket (48), the main shaft of the motor (49) is fixedly connected with a gear (401), the outer side of the rotating ring (44) is fixedly connected with a gear ring (402), and the gear ring (402) is engaged with the gear (401).

2. The projection structure for a high-coverage 3D printer according to claim 1, characterized in that: One side of the liquid frame (11) is communicated with an output pipe (403), the upper surface of the output pipe (403) is provided with a mounting groove, a rotating shaft (404) is rotatably connected in the mounting groove, the outer circle of the rotating shaft (404) is fixedly connected with a rotating plate (405), and the connecting position of the rotating shaft (404) and the output pipe (403) is provided with a torsional spring.

3. The projection structure for a high-coverage 3D printer according to claim 2, characterized in that: One end of the rotating shaft (404) penetrates the output pipe (403), the lower surface of the supporting rod (32) is fixedly connected with a hanging rod (406), one side of the hanging rod (406) is fixedly connected with a pushing rod (407), one end of the rotating shaft (404) is fixedly connected with a square plate (408), and the square plate (408) is located outside the output pipe (403).

Images