Molding platform lifting structure of 3D printer

Abstract

The utility model discloses a forming platform lifting structure of a 3D printer, and relates to the technical field of 3D printers, the forming platform lifting structure comprises a rack, the inner wall of the rack is fixedly connected with a driving piece, the inner wall of the rack is slidably connected with a lifting plate, and the driving piece is used for driving the lifting plate to lift; the sliding block is slidably connected to the outer wall of the lifting plate, a scraping plate is fixedly connected to the top of the sliding block, and the bottom of the scraping plate abuts against the top of the lifting plate; the horizontal driving mechanism is arranged outside the lifting plate, and the horizontal driving mechanism is used for driving the scraping plate to move; and the one-way driving mechanism is arranged outside the lifting plate, and the one-way driving mechanism is used for controlling the scraping plate to move. The height of the lifting plate is adjusted through the driving part, so that the lifting plate can be located at the height matched with the nozzle, meanwhile, when the lifting plate ascends through the one-way driving mechanism, the scraping plate is static, after printing is completed, the lifting plate descends, the horizontal driving mechanism drives the scraping plate to move, and residues on the surface of the lifting plate are automatically cleaned.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer molding technology, and in particular to a molding platform lifting structure for a 3D printer. Background Technology

[0002] The build platform of a 3D printer is a component used to support and fix the printing material and gradually build up a three-dimensional object during the printing process. The build platform is usually located at the bottom of the printer. As the printing process proceeds, the material will be accumulated on the platform layer by layer, eventually forming the desired object.

[0003] After use, the forming platform of a traditional 3D printer will have residue on its surface. This residue will change the flatness of the platform surface, resulting in uneven spacing between the nozzle and the platform. If the residual material is not cleaned in time, it will interfere with the adhesion between the new printed layer and the platform, causing the model to warp, fall off, or have an uneven bottom. This directly affects the printing quality of the first layer, causing the model to misalign, break, or twist the overall structure. Utility Model Content

[0004] The purpose of this invention is to provide a lifting structure for the molding platform of a 3D printer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lifting structure for a forming platform of a 3D printer, comprising:

[0006] A frame, wherein a driving component is fixedly connected to the inner wall of the frame, and a lifting plate is slidably connected to the inner wall of the frame, and the driving component is used to drive the lifting plate to move up and down;

[0007] A slider is slidably connected to the outer wall of the lifting plate, and a scraper is fixedly connected to the top of the slider, with the bottom of the scraper abutting against the top of the lifting plate;

[0008] A horizontal drive mechanism is provided outside the lifting plate and is used to drive the scraper to move.

[0009] A one-way drive mechanism is provided outside the lifting plate, and the one-way drive mechanism is used to control the movement of the scraper.

[0010] Preferably, the horizontal drive mechanism includes a gear, a first rotating shaft is rotatably connected to the outer wall of the lifting plate, the gear is fixedly sleeved on the outer wall of the first rotating shaft, and a rack is fixedly connected to the inner wall of the frame, the rack meshing with the gear.

[0011] Preferably, a connecting plate is fixedly connected to the outer wall of the lifting plate, and a sliding plate is fixedly connected to the end of the connecting plate opposite to the lifting plate. The sliding plate is slidably connected to the inner wall of the frame, and a threaded rod is rotatably connected to the outer wall of the sliding plate. The slider is threadedly sleeved on the outer wall of the threaded rod.

[0012] Preferably, the one-way drive mechanism includes a ratchet, which is fixedly connected to one end of the first rotating shaft near the slide plate. A second rotating shaft is rotatably connected to the side of the slide plate near the lifting plate. A sleeve is fixedly sleeved on the outer wall of the second rotating shaft. A pawl is provided inside the sleeve, and the pawl is engaged with the ratchet.

[0013] Preferably, a circular rod is rotatably connected to the inner wall of the sleeve, the pawl is fixedly sleeved on the middle of the outer wall of the circular rod, and a torsion spring is fixedly connected between the outer wall of the pawl and the inner wall of the sleeve.

[0014] Preferably, both the threaded rod and the outer wall of the second rotating shaft are fixedly connected to pulleys, and the outer walls of the two pulleys are connected to a transmission belt.

[0015] Compared with the prior art, the technical effects of this utility model are as follows:

[0016] This invention utilizes a drive mechanism to adjust the height of the lifting plate, allowing it to be positioned at a height compatible with the nozzle. Simultaneously, a one-way drive mechanism ensures that the scraper remains stationary when the lifting plate rises. After printing is complete, the lifting plate descends, and a horizontal drive mechanism moves the scraper, automatically cleaning any residue on the surface of the lifting plate. Attached Figure Description

[0017] Fig. 1 This is a frontal three-dimensional structural diagram of the present utility model.

[0018] Fig. 2 This is a three-dimensional structural diagram of the lifting plate of this utility model.

[0019] Fig. 3 This is a schematic diagram of the three-dimensional structure of the ratchet of this utility model.

[0020] In the diagram: 1. Frame; 2. Lifting plate; 3. Drive component; 4. Scraper; 5. Slider; 6. Rack; 7. Pawl; 8. First rotating shaft; 9. Gear; 10. Slide plate; 11. Threaded rod; 12. Connecting plate; 13. Pulley; 14. Second rotating shaft; 15. Sleeve rod; 16. Ratchet; 17. Torsion spring; 18. Round rod; 19. Drive belt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides, for example Figs. 1-3 The illustrated 3D printer's forming platform lifting structure includes a frame 1, a slider 5, a horizontal drive mechanism, and a unidirectional drive mechanism. A drive component 3 is fixedly connected to the inner wall of the frame 1. The drive component 3 uses a hydraulic cylinder, which is controlled by an electronic control system and can freely extend and retract. A lifting plate 2 is slidably connected to the inner wall of the frame 1. The lifting plate 2 serves as the forming platform for the 3D printer, supporting the printed parts. The drive component 3 drives the lifting plate 2 to move up and down. The slider 5 is slidably connected to the outer wall of the lifting plate 2. A scraper 4 is fixedly connected to the top of the slider 5, and the bottom of the scraper 4 abuts against the top of the lifting plate 2. The bottom of the scraper 4 is at a certain angle. The design allows the scraper 4 to easily remove residue from the surface of the lifting plate 2. A horizontal drive mechanism is located outside the lifting plate 2 and is used to drive the scraper 4 to move. A one-way drive mechanism is also located outside the lifting plate 2 and is used to control the movement of the scraper 4. In actual use: the height of the lifting plate 2 is adjusted by the drive component 3 so that the lifting plate 2 can be positioned at a height that matches the nozzle. At the same time, when the lifting plate 2 is raised by the one-way drive mechanism, the scraper 4 remains stationary. After printing is completed, the lifting plate 2 is lowered, and the horizontal drive mechanism drives the scraper 4 to move, automatically completing the cleaning of residue from the surface of the lifting plate 2.

[0023] One aspect is that the horizontal drive mechanism includes a gear 9, a first rotating shaft 8 is rotatably connected to the outer wall of the lifting plate 2, the gear 9 is fixedly sleeved on the outer wall of the first rotating shaft 8, a rack 6 is fixedly connected to the inner wall of the frame 1, the rack 6 meshes with the gear 9, a connecting plate 12 is fixedly connected to the outer wall of the lifting plate 2, a slide plate 10 is fixedly connected to the end of the connecting plate 12 away from the lifting plate 2, the slide plate 10 is slidably connected to the inner wall of the frame 1, a threaded rod 11 is rotatably connected to the outer wall of the slide plate 10, and a slider 5 is threadedly sleeved on the outer wall of the threaded rod 11. In specific use: during the lifting process of the lifting plate 2, the lifting plate 2 drives the first rotating shaft 8 and the gear 9 to move. Under the action of the rack 6, the gear 9 rotates, and the gear 9 drives the first rotating shaft 8 to rotate.

[0024] On the other hand, the one-way drive mechanism includes a ratchet 16, which is fixedly connected to one end of the first rotating shaft 8 near the slide plate 10. A second rotating shaft 14 is rotatably connected to the side of the slide plate 10 near the lifting plate 2. A sleeve 15 is fixedly sleeved on the outer wall of the second rotating shaft 14. The second rotating shaft 14 does not contact the ratchet 16. A pawl 7 is provided inside the sleeve 15, and the pawl 7 is engaged with the ratchet 16. When the lifting plate 2 rises, the first rotating shaft 8 drives the ratchet 16 to rotate clockwise, and the pawl 7 remains stationary. When the lifting plate 2 falls, the first rotating shaft 8 drives the ratchet 16 to rotate counterclockwise, and the pawl 7 rotates. A circular rod 18 is rotatably connected to the inner wall of the sleeve 15. The pawl 7 is fixedly sleeved on the middle of the outer wall of the circular rod 18. A torsion spring 17 is fixedly connected between the outer wall of the pawl 7 and the inner wall of the sleeve 15. Both the threaded rod 11 and the outer wall of the second rotating shaft 14 are fixedly connected to pulleys 13. The outer walls of the two pulleys 13 are connected to transmission belts 19. In specific use: when the lifting plate 2 rises, the first rotating shaft 8 drives the ratchet 16 to rotate forward, the pawl 7 remains stationary, and the second rotating shaft 14 rotates. When the lifting plate 2 rises, the first rotating shaft 8 drives the ratchet 16 to rotate in reverse. The ratchet 16 drives the pawl 7 to rotate around the central axis of the second rotating shaft 14, which drives the sleeve rod 15 and the second rotating shaft 14 to rotate. The second rotating shaft 14 drives the threaded rod 11 to rotate through the pulleys 13 and the transmission belt 19. The threaded rod 11 drives the slider 5 to move. The slider 5 can only move horizontally under the limit of the lifting plate 2. The slider 5 drives the scraper 4 to move. The scraper 4 achieves the purpose of automatically cleaning the residue on the surface of the lifting plate 2.

[0025] In specific operation: The drive component 3 adjusts the height of the lifting plate 2 so that the lifting plate 2 can be positioned at a height that matches the nozzle. During the lifting process, the lifting plate 2 drives the first rotating shaft 8 and gear 9 to move. Under the action of the rack 6, the gear 9 rotates, which drives the first rotating shaft 8 to rotate. The first rotating shaft 8 drives the ratchet 16 to rotate forward, while the pawl 7 remains stationary. The second rotating shaft 14 rotates. When the lifting plate 2 rises, the first rotating shaft 8 drives the ratchet 16 to rotate in reverse. The ratchet 16 drives the pawl 7 to rotate around the center line axis of the second rotating shaft 14, which drives the sleeve rod 15 and the second rotating shaft 14 to rotate. The second rotating shaft 14 drives the threaded rod 11 to rotate through the pulley 13 and the transmission belt 19. The threaded rod 11 drives the slider 5 to move. The slider 5 can only move horizontally under the limit of the lifting plate 2. The slider 5 drives the scraper 4 to move, and the scraper 4 achieves the purpose of automatically cleaning the residue on the surface of the lifting plate 2.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting structure for the forming platform of a 3D printer, characterized in that, include: A frame (1) is fixedly connected to a drive component (3) on its inner wall, and a lifting plate (2) is slidably connected to the inner wall of the frame (1). The drive component (3) is used to drive the lifting plate (2) to rise and fall. The slider (5) is slidably connected to the outer wall of the lifting plate (2). A scraper (4) is fixedly connected to the top of the slider (5). The bottom of the scraper (4) abuts against the top of the lifting plate (2). A horizontal drive mechanism is provided outside the lifting plate (2) and is used to drive the scraper (4) to move. A one-way drive mechanism is provided outside the lifting plate (2) and is used to control the movement of the scraper (4).

2. The forming platform lifting structure of a 3D printer according to claim 1, characterized in that, The horizontal drive mechanism includes a gear (9), and a first rotating shaft (8) is rotatably connected to the outer wall of the lifting plate (2). The gear (9) is fixedly sleeved on the outer wall of the first rotating shaft (8). A rack (6) is fixedly connected to the inner wall of the frame (1), and the rack (6) meshes with the gear (9).

3. The forming platform lifting structure of a 3D printer according to claim 2, characterized in that, A connecting plate (12) is fixedly connected to the outer wall of the lifting plate (2). A sliding plate (10) is fixedly connected to one end of the connecting plate (12) away from the lifting plate (2). The sliding plate (10) is slidably connected to the inner wall of the frame (1). A threaded rod (11) is rotatably connected to the outer wall of the sliding plate (10). The slider (5) is threadedly sleeved on the outer wall of the threaded rod (11).

4. The forming platform lifting structure of a 3D printer according to claim 3, characterized in that, The one-way drive mechanism includes a ratchet (16), which is fixedly connected to one end of the first rotating shaft (8) near the slide plate (10). The slide plate (10) is rotatably connected to a second rotating shaft (14) on the side near the lifting plate (2). A sleeve rod (15) is fixedly sleeved on the outer wall of the second rotating shaft (14). A pawl (7) is provided inside the sleeve rod (15), and the pawl (7) is engaged with the ratchet (16).

5. The lifting structure of the forming platform of a 3D printer according to claim 4, characterized in that, A circular rod (18) is rotatably connected to the inner wall of the sleeve (15), and a pawl (7) is fixedly sleeved on the middle part of the outer wall of the circular rod (18). A torsion spring (17) is fixedly connected between the outer wall of the pawl (7) and the inner wall of the sleeve (15).

6. The forming platform lifting structure of a 3D printer according to claim 5, characterized in that, The threaded rod (11) and the outer wall of the second rotating shaft (14) are both fixedly connected to pulleys (13), and the outer walls of the two pulleys (13) are connected to a transmission belt (19).

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