A precision self-adaptive doctor blade device for micro-nano light-cured 3D printing

Abstract

The utility model discloses a kind of precision self-adaptive doctor blade devices for micro-nano light curing 3D printing, including locating plate, locating plate is set to two, shaft rod is rotatably installed on the inner wall of lower end between two locating plates, both ends of shaft rod are all through locating plate and are sleeved with locating ring, the outer wall on the side of locating ring is fixed with linkage arm, threaded pin is all installed on the outer wall of locating ring on the both sides of linkage arm, one end of threaded pin is through locating ring and is connected with the outer wall of shaft rod by screw thread, the outer wall of locating plate on the side of linkage arm is equipped with limit head, fixed mounting is carried out to the locating plate of the center position at the bottom end of shaft rod, sliding frame is slidably installed on the outside of locating plate, fixed mounting is carried out on the outer wall of sliding frame with doctor blade body.The utility model not only improves the convenience of doctor blade device when using, also reaches the purpose of being easily disassembled and maintained to doctor blade device, and reaches the purpose of being easily buffered and scraped by doctor blade body to resin coating.

Description

Technical Field

[0001] This utility model relates to the field of micro-nano photopolymerization 3D printing technology, specifically a precision adaptive scraper device for micro-nano photopolymerization 3D printing. Background Technology

[0002] Micro-nano photopolymerization 3D printing technology, with its submicron resolution and ability to form complex structures, has shown broad application prospects in fields such as biomedicine, optical devices, and microelectromechanical systems. This technology achieves the manufacturing of three-dimensional structures by photopolymerizing photosensitive resin layer by layer. The uniform spreading of each resin layer is a key step in ensuring printing accuracy and surface quality. When spreading the photosensitive resin layer uniformly, it is necessary to scrape it to ensure the uniformity of the resin coating. Therefore, it is particularly important to develop a precision adaptive scraper device for micro-nano photopolymerization 3D printing.

[0003] According to CN213501375U, an adaptive scraper device includes a scraper holder, a first scraper seat, a pressure plate, a first drive device, two first guide rods, and two springs. The two first guide rods are vertically movable and mounted on the scraper holder. The lower ends of the two first guide rods are respectively hinged to the two ends of the first scraper seat. A first scraper is provided at the lower part of the first scraper seat. The pressure plate is located above the first scraper seat. The two ends of the pressure plate are vertically movable and mounted on the two first guide rods. The two springs are respectively sleeved on the two first guide rods, and the two ends of the springs respectively abut against... The device consists of a pressure plate and a first squeegee holder. A first drive unit is mounted on the squeegee holder and is used to drive the lifting and lowering of the pressure plate. The first drive unit applies force to both ends of the first squeegee holder through two springs, just like two hands pressing down on the first squeegee holder, so that the first squeegee on the first squeegee holder can adapt to the shape of the printed product. During the movement, it can press down on the screen and make the screen stick to the printed product. As can be seen from the above, although this device can be used well, it is usually not convenient to adjust the position of the squeegee body, which makes the device somewhat inconvenient to use and needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a precision adaptive scraper device for micro-nano photopolymerization 3D printing, in order to solve the problem that although the device proposed in the background art can be applied well, it is usually inconvenient to adjust the position of the scraper body, which makes the device inconvenient to use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precision adaptive scraper device for micro-nano photopolymerization 3D printing, comprising positioning plates, wherein two positioning plates are configured, and a shaft is rotatably mounted on the lower inner wall between the two positioning plates. Both ends of the shaft pass through the positioning plates and are fitted with positioning rings. A linkage arm is fixed on the outer wall of one side of the positioning ring. Threaded pins are installed on the outer walls of the positioning rings on both sides of the linkage arm. One end of the threaded pin passes through the positioning ring and is threadedly connected to the outer wall of the shaft. A limiting head is provided on the outer wall of the positioning plate on one side of the linkage arm. A placement plate is fixedly installed at the center position of the bottom end of the shaft. A sliding frame is slidably installed on the outer side of the placement plate, and a scraper body is fixedly installed on the outer wall of the sliding frame.

[0006] Preferably, a first strip plate is provided at the bottom end of the shaft on one side of the scraper body. The inner wall of the first strip plate is in contact with the surface of the scraper body. The first strip plate is provided to limit the positioning of the sliding frame.

[0007] Preferably, a second strip plate is provided at the bottom end of the shaft on the side of the scraper body away from the first strip plate. The inner wall of the second strip plate contacts the outer wall on one side of the scraper body. The second strip plate is provided to limit the positioning of the sliding frame.

[0008] Preferably, a plurality of locking bolts are installed on the outer wall of the second strip plate. One end of the locking bolt passes through the second strip plate, the scraper body, the slide frame, the mounting plate, and is threadedly connected to the nut on the surface of the first strip plate. The scraper body can be disassembled by unscrewing the locking bolts to the outside of the scraper body.

[0009] Preferably, a linkage rod is movably connected to the upper end inside the linkage arm. One end of the linkage rod extends to the outside of the linkage arm, and the other end of the linkage rod extends to the outside of the linkage arm and is provided with a mounting bracket. The mounting bracket is provided to accommodate the linkage rod.

[0010] Preferably, a spring is wound around the outer wall of the linkage rod between the linkage arm and the component holder, and the two ends of the spring contact the inner walls of the component holder and the linkage arm, respectively. The spring allows the scraper body to perform a buffered scraping operation on the resin coating.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the precision adaptive scraper device for micro-nano photopolymerization 3D printing not only improves the convenience of using the scraper device, but also achieves the purpose of easy disassembly and maintenance of the scraper device, and also achieves the purpose of easy buffering and scraping of the resin coating by the scraper body.

[0012] (1) By tightening the locking bolt, the locking bolt is removed to the outside of the scraper body. Then, the scraper body is slid laterally so that the slide frame moves on the outer wall of the mounting plate. After adjustment, the holes of the scraper body and the outer wall of the slide frame are aligned with the holes inside the slide frame. Then, the locking bolt is inserted through the scraper body and screwed into the nut on the surface of the locking bolt to lock the scraper body. The position of the scraper body can be adjusted according to the scraping requirements of the resin coating, thereby improving the convenience of using the scraper device.

[0013] (2) By turning the threaded pin, one end of the threaded pin is screwed out to the outside of the shaft, and the positioning ring can be pulled to remove it from the outer wall of the shaft. If one end of the threaded pin is passed through the positioning ring and screwed into the outer wall of the shaft, the positioning ring can be fitted onto the outer wall of the shaft, thereby achieving the purpose of easy disassembly and maintenance of the scraper device.

[0014] (3) By fixing the positioning plate on the mounting platform of the printing instrument and movably connecting the placement rack to the mounting platform, the bottom end of the scraper body can be elastically contacted with the resin coating due to the good elastic effect of the spring. If the scraper body has a high scraping force on the resin coating, the shaft rotates adaptively on the inner wall of the positioning plate, and one end of the linkage arm slides slightly on the outer wall of the linkage rod, and the spring extends and retracts accordingly, thereby achieving the purpose of easy buffering and scraping of the resin coating by the scraper body. Attached Figure Description

[0015] Figure 1 This is a top view of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0017] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0019] In the diagram: 1. Positioning plate; 2. Shaft; 3. First strip plate; 4. Locking bolt; 5. Scraper body; 6. Limiting head; 7. Positioning ring; 8. Threaded pin; 9. Linkage arm; 10. Linkage rod; 11. Spring; 12. Part holder; 13. Part holder plate; 14. Sliding frame; 15. Second strip plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-4 An embodiment of this utility model is provided: a precision adaptive scraper device for micro-nano photopolymerization 3D printing, including a positioning plate 1, two positioning plates 1 are provided, a shaft 2 is rotatably installed on the lower inner wall between the two positioning plates 1, both ends of the shaft 2 pass through the positioning plate 1 and are fitted with positioning rings 7, a linkage arm 9 is fixed on the outer wall of one side of the positioning ring 7, a linkage rod 10 is movably connected to the upper end inside the linkage arm 9, one end of the linkage rod 10 extends to the outside of the linkage arm 9, and the other end of the linkage rod 10 extends to the outside of the linkage arm 9 and is provided with a component holder 12;

[0022] In use, the mounting bracket 12 is used to house the linkage rod 10.

[0023] A spring 11 is wound on the outer wall of the linkage rod 10 between the linkage arm 9 and the component holder 12. The two ends of the spring 11 contact the inner wall of the component holder 12 and the linkage arm 9, respectively.

[0024] In use, the spring 11 is set so that the scraper body 5 can perform a buffered scraping operation on the resin coating.

[0025] Threaded pins 8 are installed on the outer walls of the positioning rings 7 on both sides of the linkage arm 9. One end of the threaded pin 8 passes through the positioning ring 7 and is threadedly connected to the outer wall of the shaft 2. A limiting head 6 is provided on the outer wall of the positioning plate 1 on one side of the linkage arm 9. A placement plate 13 is fixedly installed at the center of the bottom end of the shaft 2. A sliding frame 14 is slidably installed on the outer side of the placement plate 13. A scraper body 5 is fixedly installed on the outer wall of the sliding frame 14. A first strip plate 3 is provided at the bottom end of the shaft 2 on one side of the scraper body 5. The inner wall of the first strip plate 3 is in contact with the surface of the scraper body 5.

[0026] In use, the first strip plate 3 is set to limit the positioning of the sliding frame 14;

[0027] The bottom end of the shaft 2 on the side of the scraper body 5 away from the first strip plate 3 is provided with a second strip plate 15, and the inner wall of the second strip plate 15 is in contact with the outer wall on one side of the scraper body 5.

[0028] In use, the second strip plate 15 is used to limit the positioning of the sliding frame 14;

[0029] Several locking bolts 4 are installed on the outer wall of the second strip plate 15. One end of the locking bolt 4 passes through the second strip plate 15, the scraper body 5, the slide frame 14, the placement plate 13, and is threadedly connected to the nut on the surface of the first strip plate 3.

[0030] In use, the scraper body 5 can be disassembled by unscrewing the locking bolt 4 to the outside of the scraper body 5.

[0031] In this embodiment, the positioning plate 1 is first fixedly installed on the mounting platform of the printing device, and the component holder 12 is movably connected to the mounting platform. Because the spring 11 has good elasticity, the bottom end of the scraper body 5 elastically contacts the resin coating. If the scraper body 5 exerts a high scraping force on the resin coating, the shaft 2 rotates adaptively on the inner wall of the positioning plate 1, and one end of the linkage arm 9 slightly slides on the outer wall of the linkage rod 10, causing the spring 11 to extend and retract accordingly. This allows the scraper body 5 to perform a buffered scraping operation on the resin coating. Then, by tightening the locking bolt 4, the locking bolt 4 is removed to the outside of the scraper body 5. Subsequently, the scraper body 5 is slid laterally, causing the sliding frame 14 to be positioned on the component holder plate. The outer wall of 13 is slid. After adjustment, the holes on the outer wall of the scraper body 5 and the slide frame 14 are aligned with the holes inside the slide frame 14. Then, the locking bolt 4 is passed through the scraper body 5 and screwed into the nut on the surface of the locking bolt 4 to lock the scraper body 5. The position of the scraper body 5 can be adjusted according to the scraping requirements of the resin coating. Finally, by turning the threaded pin 8, one end of the threaded pin 8 is screwed out to the outside of the shaft 2, and the positioning ring 7 can be pulled away from the outer wall of the shaft 2. If one end of the threaded pin 8 is passed through the positioning ring 7 and screwed into the outer wall of the shaft 2, the positioning ring 7 can be fitted onto the outer wall of the shaft 2 to facilitate the disassembly and maintenance of the scraper device, thus completing the use of the scraper device.

Claims

1. A precision adaptive scraper device for micro / nano photopolymerization 3D printing, characterized in that: The device includes a positioning plate (1), which is configured as two. A shaft (2) is rotatably installed on the lower inner wall between the two positioning plates (1). Both ends of the shaft (2) pass through the positioning plate (1) and are fitted with positioning rings (7). A linkage arm (9) is fixed on the outer wall of one side of the positioning ring (7). Threaded pins (8) are installed on the outer walls of the positioning rings (7) on both sides of the linkage arm (9). One end of the threaded pin (8) passes through the positioning ring (7) and is threadedly connected to the outer wall of the shaft (2). A limiting head (6) is provided on the outer wall of the positioning plate (1) on one side of the linkage arm (9). A placement plate (13) is fixedly installed at the center of the bottom end of the shaft (2). A sliding frame (14) is slidably installed on the outer side of the placement plate (13). A scraper body (5) is fixedly installed on the outer wall of the sliding frame (14).

2. The precision adaptive scraper device for micro / nano photopolymerization 3D printing according to claim 1, characterized in that: The bottom end of the shaft (2) on one side of the scraper body (5) is provided with a first strip plate (3), and the inner wall of the first strip plate (3) is in contact with the surface of the scraper body (5).

3. A precision adaptive scraper device for micro / nano photopolymerization 3D printing according to claim 2, characterized in that: The bottom end of the shaft (2) on the side away from the first strip plate (3) of the scraper body (5) is provided with a second strip plate (15), and the inner wall of the second strip plate (15) touches the outer wall on one side of the scraper body (5).

4. A precision adaptive scraper device for micro / nano photopolymerization 3D printing according to claim 3, characterized in that: A number of locking bolts (4) are installed on the outer wall of the second strip plate (15). One end of the locking bolt (4) passes through the second strip plate (15), the scraper body (5), the slide frame (14), the placement plate (13) and is threadedly connected to the nut on the surface of the first strip plate (3).

5. A precision adaptive scraper device for micro / nano photopolymerization 3D printing according to claim 1, characterized in that: The upper end of the linkage arm (9) is movably connected to a linkage rod (10). One end of the linkage rod (10) extends to the outside of the linkage arm (9), and the other end of the linkage rod (10) extends to the outside of the linkage arm (9) and is provided with a mounting bracket (12).

6. A precision adaptive scraper device for micro / nano photopolymerization 3D printing according to claim 5, characterized in that: A spring (11) is wound on the outer wall of the linkage rod (10) between the linkage arm (9) and the mounting frame (12), and the two ends of the spring (11) are in contact with the inner walls of the mounting frame (12) and the linkage arm (9), respectively.

Images