Scraping device for 3D printing equipment

Abstract

The utility model relates to the technical field of 3D printing equipment, and discloses a scraping device for 3D printing equipment, which comprises a workbench and a scraping plate, the scraping plate is positioned in the workbench, the top of the scraping plate is movably connected with a connecting plate, two ends of the top of the connecting plate are fixedly connected with two threaded rods, and the two threaded rods are fixedly connected with the workbench. The top of the threaded rod is connected into the threaded sleeve in a threaded mode, the top of the threaded sleeve is fixedly connected with a worm gear, one side of the worm gear is connected with a worm in a threaded mode, one end of the worm is fixedly connected with a motor, and by starting the motor, the motor drives the worm to rotate, the worm rotates to drive the worm gear to rotate, and the worm gear drives the threaded sleeve to rotate. The threaded sleeve rotates to drive the threaded rod to move up and down in the threaded sleeve along threads, the threaded rod drives the connecting plate to move up and down, the connecting plate drives the scraping plate to move up and down, and therefore the height of the scraping plate can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing equipment, in particular to a scraping device for 3D printing equipment. Background Art

[0002] 3D printers are three-dimensional additive manufacturing equipment that are increasingly widely used. Stereolithography is a type of 3D molding technology that mainly uses light of a specific wavelength to irradiate the liquid photosensitive resin in layers according to the cross-sectional shape of the three-dimensional model, and solidify the photosensitive resin to form a three-dimensional product. In traditional light-curing 3D printing equipment, a scraper is usually set above the workbench, and the scraper is used to scrape the resin on the movable work plate by moving back and forth.

[0003] A component of a 3D printing device is disclosed in a Chinese utility model patent with announcement number CN207190274U, which belongs to the technical field of 3D printing devices. An air guide groove is provided between the exhaust hole and the liquid guide mechanism, and an observation window is provided on the side of the scraper bracket. A transparent lens matching the air guide groove is provided on the observation window. The user can monitor the exhaust state of the liquid guide mechanism and the exhaust hole through observation of the transparent lens, thereby ensuring the reliability of the entire exhaust process. In addition, a scraper table can be provided at the bottom of the scraper bracket. The scraper table can flatten the resin to a certain extent and guide the resin with bubbles from the bottom of the scraper bracket to the entrance of the air guide groove, thereby reducing the total amount of bubbles on the liquid surface.

[0004] With respect to the existing related technologies, the inventors believe that the following defects exist: in the prior art, a scraping operation is required during the printing process. When the traditional scraping device is in use, the scraper position structure is fixed, resulting in a reduced scraper service life, and frequent replacement leads to increased printing costs. Utility Model Content

[0005] In order to solve the technical problems that scraping operation is required in the existing printing process, the service life of the traditional scraper is reduced due to the fixed scraper position structure when in use, and the frequent replacement leads to increased printing costs. The utility model provides a scraper device for 3D printing equipment.

[0006] The utility model is implemented by the following technical scheme: a scraper device for 3D printing equipment, comprising a workbench and a scraper plate, the scraper plate is located inside the workbench, the top of the scraper plate is movably connected with a connecting plate, the top two ends of the connecting plate are fixedly connected with two threaded rods, the top of the threaded rod is threadedly connected to the inside of a threaded sleeve, the top of the threaded sleeve is fixedly connected with a worm wheel, one side of the worm wheel is threadedly connected with a worm, and one end of the worm is fixedly connected with a motor.

[0007] Preferably, a support plate is provided at the bottom of the motor, and one end of the threaded sleeve is rotatably connected to the inside of the support plate. By providing a limiting ring, the threaded sleeve can drive the limiting ring to rotate inside the support plate and limit the support plate to prevent the support plate from moving up and down outside the threaded sleeve.

[0008] Preferably, one end of the threaded sleeve is fixedly connected to a limiting ring, and the limiting ring is rotatably connected to the inside of the support plate.

[0009] Preferably, the top of the support plate is fixedly connected to a side plate, and one end of the worm is rotatably connected to an inner side of the side plate. When the worm rotates, the one end of the worm will rotate inside the side plate.

[0010] Preferably, the top of the scraper plate is fixedly connected to a movable plate, and the movable plate is slidably connected to the inside of the connecting plate. When the scraper plate is moved, the scraper plate will drive the movable plate to move inside the connecting plate. At the same time, since the movable plate is located inside the connecting plate, the position of the scraper plate can be limited by the movable plate.

[0011] Preferably, both ends of the connecting plate are fixedly connected with fixing blocks, one end of the fixing block is threadedly connected with a screw rod, and the top of the screw rod is fixedly connected with a hand wheel.

[0012] Preferably, a limiting hole is processed on the top of the movable plate, and the screw rod is plug-connected to the inside of the limiting hole. The bottom of the screw rod is inserted into the inside of the limiting hole, so that the position of the movable plate can be fixed, and then the position of the scraper plate can be fixed by the movable plate. When the scraper plate needs to be removed, the bottom of the screw rod is detached from the bottom, so that the movable plate can be slid to drive the scraper plate to move.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] When the utility model is in use, by starting the motor, the motor will drive the worm to rotate, the rotation of the worm will drive the worm wheel to rotate, the worm wheel will drive the threaded sleeve to rotate, the rotation of the threaded sleeve will drive the threaded rod to move up and down along the thread inside the threaded sleeve, the threaded rod will drive the connecting plate to move up and down, the connecting plate will drive the scraper plate to move up and down, so that the height of the scraper plate can be adjusted;

[0015] When the utility model is in use, the hand wheel is rotated to drive the screw rod to rotate, so that the screw rod is rotated upward along the inside of the fixed block, so that the bottom of the screw rod is separated from the inside of the limiting hole, which is convenient for removing the scraper plate and replacing it. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For the utility model Figure 1 The enlarged schematic diagram of the middle part A;

[0018] Figure 3 For the utility model Figure 1 The enlarged schematic diagram of the middle B part;

[0019] Figure 4 It is a schematic diagram of the connection structure of the support plate and the limiting ring of the utility model.

[0020] In the figure: 1. workbench; 2. scraper plate; 3. connecting plate; 4. threaded rod; 5. threaded sleeve; 6. support plate; 7. motor; 8. worm; 9. side plate; 10. worm wheel; 11. movable plate; 1101, limiting hole; 12. fixing block; 13. hand wheel; 14. screw rod; 15. limiting ring. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0022] Example 1: Please refer to Figure 1 - Figure 4 A scraper device for a 3D printing device of the present embodiment comprises a workbench 1 and a scraper plate 2, the scraper plate 2 is located inside the workbench 1, the top of the scraper plate 2 is movably connected to a connecting plate 3, the top ends of the connecting plate 3 are fixedly connected to two threaded rods 4, the top of the threaded rod 4 is threadedly connected to the inside of a threaded sleeve 5, the top of the threaded sleeve 5 is fixedly connected to a worm gear 10, one side of the worm gear 10 is threadedly connected to a worm 8, and one end of the worm 8 is fixedly connected to a motor 7;

[0023] When the height of the scraper plate 2 needs to be adjusted, the motor 7 is started, and the motor 7 drives the worm 8 to rotate, and the rotation of the worm 8 drives the worm wheel 10 to rotate, so that the worm wheel 10 rotates along the vertical placement, and the worm wheel 10 drives the threaded sleeve 5 to rotate, and the rotation of the threaded sleeve 5 drives the threaded rod 4 to move up and down along the thread inside the threaded sleeve 5, and the threaded rod 4 drives the connecting plate 3 to move up and down, and the connecting plate 3 drives the scraper plate 2 to move up and down, so that the height of the scraper plate 2 can be adjusted;

[0024] Further, a support plate 6 is provided at the bottom of the motor 7, one end of the threaded sleeve 5 is rotatably connected to the inside of the support plate 6, one end of the threaded sleeve 5 is fixedly connected to a limiting ring 15, and the limiting ring 15 is rotatably connected to the inside of the support plate 6. By providing the limiting ring 15, the threaded sleeve 5 can drive the limiting ring 15 to rotate inside the support plate 6 and limit the support plate 6, so as to prevent the support plate 6 from moving up and down outside the threaded sleeve 5;

[0025] Furthermore, the top of the support plate 6 is fixedly connected to a side plate 9, and one end of the worm 8 is rotatably connected to the inside of one side of the side plate 9. When the worm 8 rotates, the one end of the worm 8 will rotate inside the side plate 9.

[0026] Furthermore, a movable plate 11 is fixedly connected to the top of the scraper plate 2, and the movable plate 11 is slidably connected to the inside of the connecting plate 3. When the scraper plate 2 is moved, the scraper plate 2 will drive the movable plate 11 to move inside the connecting plate 3. At the same time, since the movable plate 11 is located inside the connecting plate 3, the position of the scraper plate 2 can be limited by the movable plate 11.

[0027] Furthermore, both ends of the connecting plate 3 are fixedly connected with a fixing block 12, one end of the fixing block 12 is threadedly connected with a screw rod 14, and the top of the screw rod 14 is fixedly connected with a hand wheel 13. When the scraper plate 2 needs to be replaced, the hand wheel 13 is turned, and the hand wheel 13 will drive the screw rod 14 to rotate, so that the screw rod 14 moves upward, and the screw rod 14 will rotate upward along the inside of the fixing block 12, so that the bottom of the screw rod 14 is separated from the inside of the movable plate 11, thereby facilitating the removal of the scraper plate 2 for replacement;

[0028] Furthermore, a limiting hole 1101 is processed on the top of the movable plate 11, and the screw rod 14 is plug-connected to the inside of the limiting hole 1101. The bottom of the screw rod 14 is plugged into the inside of the limiting hole 1101, so that the position of the movable plate 11 can be fixed, and then the position of the scraper plate 2 can be fixed by the movable plate 11. When the scraper plate 2 needs to be removed, the bottom of the screw rod 14 is separated from the bottom of 111, so that the movable plate 11 can be slid to drive the scraper plate 2 to move.

[0029] Working principle: when the height of the scraper plate 2 needs to be adjusted, start the motor 7, the motor 7 will drive the worm 8 to rotate, the rotation of the worm 8 will drive the two worm wheels 10 to rotate, the two worm wheels 10 will respectively drive the two threaded sleeves 5 to rotate, the rotation of the two threaded sleeves 5 will respectively drive the two threaded rods 4 to move up and down along the threads inside the two threaded sleeves 5, the two threaded rods 4 will drive the connecting plate 3 to move up and down, the connecting plate 3 will drive the scraper plate 2 to move up and down, so that the height of the scraper plate 2 can be adjusted.

[0030] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A scraper device for a 3D printing device, comprising a workbench (1) and a scraper plate (2), characterized in that: The scraper plate (2) is located inside the workbench (1); the top of the scraper plate (2) is movably connected to a connecting plate (3); the two ends of the top of the connecting plate (3) are fixedly connected to two threaded rods (4); the top of the threaded rod (4) is threadedly connected to the inside of a threaded sleeve (5); the top of the threaded sleeve (5) is fixedly connected to a worm gear (10); one side of the worm gear (10) is threadedly connected to a worm (8); one end of the worm (8) is fixedly connected to a motor (7).

2. The scraper device for 3D printing equipment according to claim 1, characterized in that: A support plate (6) is provided at the bottom of the motor (7), and one end of the threaded sleeve (5) is rotatably connected to the inside of the support plate (6).

3. A scraping device for 3D printing equipment according to claim 2, characterized in that: One end of the threaded sleeve (5) is fixedly connected to a limit ring (15), and the limit ring (15) is rotatably connected to the inside of the support plate (6).

4. The scraper device for 3D printing equipment according to claim 2, characterized in that: The top of the support plate (6) is fixedly connected to a side plate (9), and one end of the worm (8) is rotatably connected to the inside of one side of the side plate (9).

5. The scraper device for 3D printing equipment according to claim 1, characterized in that: The top of the scraper plate (2) is fixedly connected to a movable plate (11), and the movable plate (11) is slidably connected to the inside of the connecting plate (3).

6. The scraper device for 3D printing equipment according to claim 5, characterized in that: Both ends of the connecting plate (3) are fixedly connected to fixed blocks (12), one end of the fixed block (12) is threadedly connected to a screw rod (14), and the top of the screw rod (14) is fixedly connected to a hand wheel (13).

7. The scraper device for 3D printing equipment according to claim 6, characterized in that: A limiting hole (1101) is processed on the top of the movable plate (11), and the screw rod (14) is plug-connected inside the limiting hole (1101).

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