UV lens fixing structure of 3D printer

Abstract

The utility model discloses a UV lens fixing structure of 3D printer belongs to 3D printing field. The UV lens fixing structure of 3D printer, including mounting panel and being located lens of mounting panel bottom, mounting panel bottom evenly is equipped with a plurality of clamping assembly for clamping lens, clamping assembly includes the fixed plate of fixedly being located mounting panel bottom, the movable rod of sliding connection on fixed plate, the push block of being movable in movable rod interior and the positioning assembly for driving push block moves up and down, and the side of push block near lens is equipped as inclined plane, positioning assembly is still used for positioning the height position of push block, and positioning assembly is screw transmission structure, and when push block moves up through positioning assembly, the inclined plane of push block pushes movable rod and moves to lens one side. The utility model discloses a positioning structure by adopting the screwing and the inclined plane push -and -press of thread, and simple, convenient operation guarantees the stability of push block to the benefit guaranteeing the clamping fixed effect of lens, avoids the risk of loosening in the operation movement of lens.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing, and in particular to a UV lens fixing structure for a 3D printer. Background Technology

[0002] In the operation of a photopolymer 3D printer, the UV lens plays a crucial role. Its main function is to precisely focus ultraviolet light to cure the resin material placed on the worktable.

[0003] A Chinese patent, application number 202421177918.9, discloses a UV lens fixing structure for a 3D printer. This patent mainly includes a mounting plate, with a lens placed on its upper end. A limiting frame contacts the mounting plate, and the limiting frame contacts the lens. A sleeve is fixedly connected inside the mounting plate, with a fixing frame contacting its upper end. The fixing frame contacts the lens, and a sliding rod is fixedly connected to its lower end, slidably connected to the sleeve. This patent, by incorporating components such as a fixing frame, limiting sleeve, and threaded rod, uses the threaded rod to drive the fixing frame to secure the lens, making lens installation more convenient.

[0004] However, the aforementioned patent places the lens between two limiting frames, using the spring force to move the limiting frames and clamp the lens, achieving a clamping effect for lenses of different sizes. Then, by rotating the limiting sleeve, the threaded rod drives the fixing frame to secure the lens. Due to the fixed spacing between the fixing frames, if the limiting frames clamp a larger lens, the fixing frame and its protrusions may obstruct the lens when fixing it, affecting the usability. If the limiting frames clamp a smaller lens, the fixed spacing may make it difficult for the fixing frames to make contact with the lens for a secure hold. In this fixed state, relying solely on the elastic force of the springs to clamp the lens makes it difficult to guarantee clamping stability. Furthermore, during the 3D printing process, the lens is prone to displacement and loosening due to repeated movement of the print head and equipment vibration. Utility Model Content

[0005] This utility model provides a UV lens fixing structure for a 3D printer, which can solve the problems in the existing UV lens fixing structure of 3D printers, such as the limiting frame clamping a large lens, which may block the lens and affect the use effect, and the limiting frame clamping a small lens, which is difficult to guarantee the clamping stability and is prone to displacement and loosening.

[0006] A UV lens fixing structure for a 3D printer includes a mounting plate and a lens disposed at the bottom of the mounting plate, wherein a plurality of clamping components for clamping the lens are evenly provided at the bottom of the mounting plate. The clamping assembly includes a fixed plate fixed to the bottom of the mounting plate, a movable rod slidably connected to the fixed plate, a push block movable inside the movable rod, and a positioning assembly for driving the push block to move up and down. The side of the push block closest to the lens is set as an inclined surface. The positioning component is also used to position the height of the push block. The positioning component is a helical transmission structure. When the push block moves upward through the positioning component, the inclined surface of the push block pushes the movable rod to move towards the lens side.

[0007] Preferably, the positioning component includes a fixed ring fixed to the bottom of the fixed plate and a movable ring threadedly connected to the fixed ring. The push block is connected to the movable ring, and both the fixed ring and the movable ring are provided with mating thread structures.

[0008] Preferably, the positioning assembly further includes a connecting ring rotatably connected to the top of the movable ring and a plurality of connecting rods uniformly fixed to the top of the connecting ring, each of the connecting rods being fixedly connected to the bottom of the corresponding push block.

[0009] Preferably, the clamping assembly further includes a clamping plate fixed to one end of the movable rod and a through groove opened inside the movable rod, the push block slides inside the through groove, the clamping plate is configured to fit against the outer surface of the lens, and the bottom of the clamping plate is provided with an upper support assembly for supporting the lens.

[0010] Preferably, the upper support assembly includes a fixed rod fixed to the bottom of the clamping plate, a threaded rod threadedly connected to the inside of the fixed rod, a support plate sleeved on the threaded rod, and a knob fixed to the bottom end of the threaded rod, wherein the support plate is located between the knob and the lens.

[0011] Preferably, the clamping assembly further includes a groove formed on the fixed plate and a limiting block slidably connected inside the groove, wherein the push block is fixedly connected to the limiting block.

[0012] Preferably, the clamping assembly further includes a spring, and the end of the movable rod opposite to the clamping plate is configured as a T-shaped structure, and the spring is fixed between the T-shaped structure of the clamping plate and the fixed plate.

[0013] Preferably, the positioning component further includes an operating ring fixed to the bottom of the movable ring, and the operating ring is provided with anti-slip protrusions.

[0014] Preferably, the mounting plate and each clamping plate have through holes inside.

[0015] Preferably, the side of the through groove closest to the inclined surface of the push block is provided with an inclined structure, and the inclined structure of the through groove is adapted to the inclined surface of the push block.

[0016] This utility model provides a UV lens fixing structure for a 3D printer, which has the following beneficial effects: 1. After the lens is positioned between the clamping plates, rotating the movable ring, through threaded tightening, causes the movable ring to move upwards. This upward movement of the movable ring, under the action of the connecting rod, causes the push block to move upwards. The push block, moving upwards, uses its inclined surface to push the movable rod, firmly pressing the clamping plate against the lens. This positioning structure, employing both threaded tightening and inclined surface pushing, is simple and convenient to operate, ensuring the stability of the push block and thus guaranteeing a secure clamping effect on the lens, preventing the risk of loosening during lens movement.

[0017] 2. After the lens is clamped on the clamping plate, rotate the support plate to make it contact the bottom of the lens. Turn the knob to drive the threaded rod to rotate. The support plate is positioned by the cooperation of the threaded rod and the internal thread of the fixing rod, which can better support the lens and improve the stability of the lens installation. Attached Figure Description

[0018] Figure 1 A schematic diagram of a UV lens fixing structure for a 3D printer provided by this utility model. Figure 1 ; Figure 2 A schematic diagram of a UV lens fixing structure for a 3D printer provided by this utility model. Figure 2 ; Figure 3 A schematic diagram of the clamping and positioning components of a UV lens fixing structure for a 3D printer provided by this utility model; Figure 4 A schematic diagram of the fixing ring, movable ring, operating ring and connecting ring of a UV lens fixing structure for a 3D printer provided by this utility model; Figure 5 A schematic diagram of a clamping assembly structure for fixing a UV lens of a 3D printer provided by this utility model; Figure 6 A schematic diagram of the upper support component of a UV lens fixing structure for a 3D printer provided by this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Mounting plate; 2. Lens; 3. Fixing plate; 4. Movable rod; 5. Clamping plate; 6. Through groove; 7. Push block; 8. Fixing ring; 9. Movable ring; 10. Operating ring; 11. Connecting ring; 12. Connecting rod; 13. Spring; 14. Limiting block; 15. Slide groove; 16. Through hole; 17. Fixing rod; 18. Threaded rod; 19. Support plate; 20. Knob. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0021] like Figures 1 to 6As shown in the figure, an embodiment of this utility model provides a UV lens fixing structure for a 3D printer, including a mounting plate 1 and a lens 2 disposed at the bottom of the mounting plate 1. The bottom of the mounting plate 1 is evenly provided with multiple clamping components for clamping the lens 2. Each clamping component includes a fixed plate 3 fixed to the bottom of the mounting plate 1, a movable rod 4 slidably connected to the fixed plate 3, a push block 7 movable inside the movable rod 4, a positioning component for driving the push block 7 to move up and down, a clamping plate 5 fixed to one end of the movable rod 4, and a through groove 6 opened inside the movable rod 4. The push block 7 slides inside the through groove 6. A slot is opened inside the fixed plate 3 for the movable rod 4 to pass through. The side of the push block 7 closest to the lens 2 is provided with an inclined surface. The positioning component is also used to position the height of the push block 7. The positioning component is a helical transmission structure, which converts rotational motion into linear displacement of the push block 7 to adjust its height. When the push block 7 moves upward via the positioning component, the inclined surface of the push block 7 pushes the movable rod 4 towards the lens 2.

[0022] This application uses four sets of clamping components to create a clamping effect at four endpoints, resulting in a more stable UV lens mounting. When it is necessary to fix the lens 2 located between the clamping plates 5, the positioning component is operated, and the rotational motion of the helical transmission structure causes the push block 7 to move upward linearly. When the inclined surface of the push block 7 contacts and slides against the movable rod 4, it pushes the movable rod 4 towards the lens 2, and the clamping plates 5 press the lens 2 tightly. The structure is stable, the operation is convenient, and the stability of the UV lens is guaranteed. At the same time, based on the horizontally movable operation of the movable rod 4 and the clamping plates 5, it is easy to adjust the clamping plates 5 to better meet the fixing requirements of UV lenses of different specifications.

[0023] In some specific implementation plans, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the positioning assembly includes a fixed ring 8 fixed to the bottom of the fixed plate 3, a movable ring 9 threadedly connected to the fixed ring 8, a connecting ring 11 rotatably connected to the top of the movable ring 9, multiple connecting rods 12 evenly fixed to the top of the connecting ring 11, and an operating ring 10 fixed to the bottom of the movable ring 9. A push block 7 is connected to the movable ring 9. Both the fixed ring 8 and the movable ring 9 have mating threaded structures, and each connecting rod 12 is fixedly connected to the bottom of the corresponding push block 7. The operating ring 10 has anti-slip protrusions to facilitate rotation of the movable ring 9.

[0024] Lens 2 is positioned between clamping plates 5. After its top abuts against the bottom of mounting plate 1, rotating operating ring 10 causes movable ring 9 to rotate and rise along the thread of fixed ring 8. The upward movement of movable ring 9 causes push block 7 to move upward under the action of connecting rod 12, thereby realizing the displacement operation of movable rod 4 towards lens 2. The operation is simple and convenient, ensuring the stability of push block 7, which in turn helps to ensure the clamping and fixing effect of lens 2.

[0025] When it is necessary to release lens 2, rotate the operating ring 10 in the opposite direction, the movable ring 9 descends, the push block 7 moves down, and the clamping plate 5 releases lens 2, making it easy to disassemble and perform maintenance work.

[0026] In some specific implementation plans, such as Figure 1 , Figure 3 and Figure 6 As shown, the bottom of the clamping plate 5 is provided with an upper support assembly for supporting the lens 2. At least two upper support assemblies are provided and are arranged symmetrically. The upper support assembly includes a fixing rod 17 fixed to the bottom of the clamping plate 5, a threaded rod 18 threadedly connected to the inside of the fixing rod 17, a support plate 19 sleeved on the threaded rod 18, and a knob 20 fixed to the bottom end of the threaded rod 18. The support plate 19 is located between the knob 20 and the lens 2, and the top of the support plate 19 contacts the lens frame of the lens 2 to support the lens 2.

[0027] When lens 2 is clamped to mounting plate 1, rotating the support plate 19 causes the longer side to rotate to the side, making it easier for lens 2 to be placed between the fixing rods 17 and between the clamping plates 5. After lens 2 is clamped on clamping plate 5, rotating the support plate 19 makes it contact the bottom of lens 2, and turning the knob 20 drives the threaded rod 18 to rotate. The engagement of the threaded rod 18 with the internal threads of the fixing rod 17 achieves the positioning of the support plate 19, thereby better supporting lens 2 and ensuring installation stability.

[0028] In some specific implementation plans, such as Figure 5 As shown, the clamping assembly also includes a groove 15 formed on the fixed plate 3, a limiting block 14 slidably connected inside the groove 15, and a spring 13. The push block 7 is fixedly connected to the limiting block 14. The end of the movable rod 4 opposite to the clamping plate 5 is set as a T-shaped structure. The spring 13 is fixed between the T-shaped structure of the clamping plate 5 and the fixed plate 3, so as to provide a restoring force for the clamping plate 5 and the movable rod 4.

[0029] In some specific implementation plans, such as Figure 2 and Figure 3 As shown, the clamping plate 5 is designed to fit snugly against the outer surface of the lens 2, increasing the contact area between the clamping plate 5 and the lens 2 and improving the clamping effect. Both the mounting plate 1 and each clamping plate 5 have through holes 16 inside. The through holes 16 on the mounting plate 1 are located above the lens 2. The through holes 16 facilitate airflow at the contact points between the lens 2 and the mounting plate 1 and clamping plates 5, ensuring effective heat dissipation for the lens 2. The mounting plate 1 is installed on the 3D printer, maintaining a gap at the top for heat dissipation.

[0030] In some specific implementations, the side of the through groove 6 near the inclined surface of the push block 7 is set as an inclined structure (not shown in the figure). The inclined structure of the through groove 6 is adapted to the inclined surface of the push block 7 to increase the contact area between the inclined surface of the push block 7 and the through groove 6, and to ensure the stability of the fit between the push block 7 and the movable rod 4.

[0031] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution will now be briefly explained in conjunction with specific application scenarios: First, rotating the support plate 19 causes the longer side to rotate to the side, making it easier to place the lens 2 from between the fixed rods 17 into between the clamping plates 5. After the lens 2 is positioned between the clamping plates 5, rotating the operating ring 10 causes the movable ring 9 to rotate and rise along the thread of the fixed ring 8. The upward movement of the movable ring 9 causes the push block 7 to move upward under the action of the connecting rod 12.

[0032] When the inclined surface of the push block 7 slides in contact with the movable rod 4, it pushes the movable rod 4 towards the lens 2, and the clamping plate 5 presses the lens 2 tightly. The structure is stable, the operation is convenient, and the stability of the UV lens is guaranteed. At the same time, the horizontal movement of the movable rod 4 and the clamping plate 5 makes it easy to adjust the clamping plate 5 to better meet the fixing needs of UV lenses of different specifications.

[0033] Then, rotate the support plate 19 to make it contact the bottom of the lens 2, and turn the knob 20 to drive the threaded rod 18 to rotate. The support plate 19 is positioned by the cooperation of the threaded rod 18 and the internal thread of the fixing rod 17, so as to better support the lens 2 and ensure the stability of the installation.

[0034] When lens 2 needs to be removed, rotate the operating ring 10 in the opposite direction, the movable ring 9 descends, the push block 7 moves down, and the clamping plate 5 releases lens 2, making it easier to remove and perform maintenance work.

[0035] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A UV lens fixing structure for a 3D printer, comprising a mounting plate (1) and a lens (2) disposed at the bottom of the mounting plate (1), characterized in that, The mounting plate (1) has a plurality of clamping components evenly provided at its bottom for clamping the lens (2); The clamping assembly includes a fixed plate (3) fixed to the bottom of the mounting plate (1), a movable rod (4) slidably connected to the fixed plate (3), a push block (7) movable inside the movable rod (4), and a positioning assembly for driving the push block (7) to move up and down. The side of the push block (7) near the lens (2) is set as an inclined surface. The positioning component is also used to position the height of the push block (7). The positioning component is a helical transmission structure. When the push block (7) moves upward through the positioning component, the inclined surface of the push block (7) pushes the movable rod (4) to move towards the lens (2).

2. The UV lens fixing structure for a 3D printer as described in claim 1, characterized in that, The positioning component includes a fixed ring (8) fixed to the bottom of the fixed plate (3) and a movable ring (9) threadedly connected to the fixed ring (8). The push block (7) is connected to the movable ring (9). Both the fixed ring (8) and the movable ring (9) are provided with matching threaded structures.

3. The UV lens fixing structure for a 3D printer as described in claim 2, characterized in that, The positioning assembly also includes a connecting ring (11) rotatably connected to the top of the movable ring (9) and a plurality of connecting rods (12) uniformly fixed to the top of the connecting ring (11), each of the connecting rods (12) being fixedly connected to the bottom of the corresponding push block (7).

4. The UV lens fixing structure for a 3D printer as described in claim 1, characterized in that, The clamping assembly also includes a clamping plate (5) fixed to one end of the movable rod (4) and a through groove (6) opened inside the movable rod (4). The push block (7) slides inside the through groove (6). The clamping plate (5) is configured to fit against the outer surface of the lens (2), and the bottom of the clamping plate (5) is provided with an upper support assembly for supporting the lens (2).

5. The UV lens fixing structure for a 3D printer as described in claim 4, characterized in that, The upper support assembly includes a fixed rod (17) fixed to the bottom of the clamping plate (5), a threaded rod (18) threaded inside the fixed rod (17), a support plate (19) sleeved on the threaded rod (18), and a knob (20) fixed to the bottom of the threaded rod (18). The support plate (19) is located between the knob (20) and the lens (2).

6. The UV lens fixing structure for a 3D printer as described in claim 4, characterized in that, The clamping assembly also includes a groove (15) opened on the fixed plate (3) and a limiting block (14) slidably connected inside the groove (15), and the push block (7) is fixedly connected to the limiting block (14).

7. The UV lens fixing structure for a 3D printer as described in claim 6, characterized in that, The clamping assembly also includes a spring (13). The end of the movable rod (4) opposite to the clamping plate (5) is set as a T-shaped structure. The spring (13) is fixed between the T-shaped structure of the clamping plate (5) and the fixed plate (3).

8. The UV lens fixing structure for a 3D printer as described in claim 3, characterized in that, The positioning component also includes an operating ring (10) fixed at the bottom of the movable ring (9), and the operating ring (10) is provided with anti-slip protrusions.

9. The UV lens fixing structure for a 3D printer as described in claim 8, characterized in that, The mounting plate (1) and each clamping plate (5) are provided with through holes (16).

10. The UV lens fixing structure for a 3D printer as described in claim 7, characterized in that, The side of the through groove (6) near the inclined surface of the push block (7) is set as an inclined structure, and the inclined structure of the through groove (6) is adapted to the inclined surface of the push block (7).

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