Focusing mechanism
By designing an outer and inner sleeve structure, combined with lifting guide posts and spiral threads, the problem of lens disc shaking and tilting during laser head movement was solved, achieving lens stability and accurate focusing.
Patent Information
- Application Number
- CN202520262902.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-19
AI Technical Summary
In existing focusing mechanisms, the lens disk is prone to shaking or tilting when the laser head moves continuously, affecting the accuracy of the focusing effect.
It adopts an outer sleeve and an inner sleeve structure, and achieves precise up and down movement of the lens through lifting guide columns and spiral thread structure. Combined with point contact stabilizing guide rail and clamping components, it prevents the inner sleeve from tilting and shaking, and ensures the stability of the lens.
This achieves stability of the lens and accuracy of the focusing effect during the movement of the laser head, avoids lens disc jitter and tilt, and ensures precise adjustment of the focal position.
Smart Images
Figure CN223650798U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical technology, specifically to a focusing mechanism. Background Technology
[0002] A focusing mechanism is a device or system in a laser system that changes the focusing state of a laser beam by adjusting the position or shape of optical elements. The design of a focusing mechanism aims to ensure that the laser beam can be accurately focused to a predetermined position for efficient laser operation.
[0003] In existing technologies, focusing light typically involves placing a lens in a lens disk that can rotate and move up and down along an internal thread. While this precision device provides excellent focusing performance, its effectiveness can be affected by continuous laser head movement. In practical applications, the lens disk is prone to jitter or tilting, thus impacting focusing accuracy. Generally, focusing light is achieved by mounting a lens in a lens disk that can rotate and move up and down along an internal thread. While this precision device offers excellent focusing performance, its performance is inevitably affected by motion when the laser head needs to move continuously. In practical applications, this effect typically manifests as lens disk jitter or tilting, thus affecting focusing accuracy. Utility Model Content
[0004] (I) Problems to be solved
[0005] The technical problem to be solved by this utility model is to provide a focusing mechanism in light of the current state of the technology.
[0006] (II) Technical Solution
[0007] This utility model is achieved through the following technical solution: A focusing mechanism is proposed, including a mounting base, an outer sleeve mounted on the mounting base and forming a receiving cavity. The outer sleeve is provided with a pressing component and has a lifting groove. An inner sleeve is provided inside the receiving cavity, and a lifting guide post passes through the lifting groove and connects to the inner sleeve. The point contact stabilizing guide rail of the pressing component abuts against a clamping groove on the inner sleeve.
[0008] By adopting the above technical solution, when the focus position needs to be adjusted, the adjusting sleeve can be rotated as needed, referring to the scale lines. During rotation, one end of the lifting guide column abuts against the internal thread grooves at different positions on the spiral thread structure, driving the lifting guide column to move vertically along the lifting groove. Because the other end of the lifting guide column is connected to the inner sleeve, and the inner sleeve is connected to the lens, simply rotating the adjusting sleeve is sufficient to accurately control the up-and-down movement of the lens. To prevent the inner sleeve from tilting or shaking, a clamping assembly is designed. The clamping assembly is located on the outer sleeve, and its point-contact stabilizing guide rail's point-contact pressure block engages with the clamping groove in the inner sleeve. The point-contact pressure block is elastic and slightly retractable, thus ensuring the stability of the inner sleeve and the smoothness of adjustment.
[0009] Furthermore, an adjusting sleeve is provided outside the outer sleeve, and the adjusting sleeve has a spiral thread structure that cooperates with the lifting guide column. Rotating the adjusting sleeve causes the lifting guide column to drive the inner sleeve to move up and down.
[0010] Furthermore, the point contact stabilizing guide rail is fixed inside the clamping assembly by screw connection, and point contact pressure blocks are provided on the point contact stabilizing guide rail. The point contact pressure blocks are used to lock the inner sleeve and prevent the inner sleeve from shifting position during movement.
[0011] Furthermore, the inner wall of the inner sleeve is formed with connecting threads for connecting the lens.
[0012] Furthermore, a damping ring is installed on the mounting base.
[0013] Furthermore, the lifting guide column is spirally engaged with the guide column fitting hole opened on the inner sleeve.
[0014] Furthermore, the point contact pressure block is elastically set on the point contact stabilizing guide rail.
[0015] Furthermore, the spiral thread structure is distributed in a spiral-rising pattern on the inner wall of the adjusting sleeve. During the raising and lowering of the inner sleeve, the lifting guide post abuts against the internal thread grooves at different positions on the spiral thread structure. The rotation axis of the adjusting sleeve is perpendicular to the bottom surface of the receiving cavity.
[0016] Furthermore, the outer wall of the adjusting sleeve is formed with manual turning grooves and engraved with digital display scale lines.
[0017] (III) Beneficial Effects
[0018] This invention employs a precision external spiral device to control the up-and-down movement of a lens mounted on an inner sleeve, thereby adjusting the distance between the lens and the laser source, and thus adjusting the focal point and changing the size and shape of the laser beam. Simultaneously, this technical solution incorporates point-contact stabilizing devices on both sides of the internal thread. After the lens mounting device is locked, the stabilizing devices provide appropriate tightening force, preventing the lens from becoming loose or tilted. Attached Figure Description
[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0020] Figure 1 This is an exploded view of a focusing mechanism described in this utility model;
[0021] Figure 2 This is a cross-sectional view (a) of a focusing mechanism described in this utility model;
[0022] Figure 3 This is a cross-sectional view (II) of a focusing mechanism described in this utility model;
[0023] The accompanying reference numerals are as follows:
[0024] 1. Mounting base; 2. Outer sleeve; 3. Receiving cavity; 4. Clamping assembly; 5. Lifting groove; 6. Inner sleeve; 7. Lifting guide post; 8. Point contact stabilizing guide rail; 9. Clamping groove; 10. Adjusting sleeve; 11. Helical thread structure; 12. Screw; 13. Point contact pressure block; 14. Connecting thread; 15. Damping ring; 16. Guide post fitting hole; 17. Manual torsion pattern; 18. Digital display scale; 19. Internal thread groove. Detailed Implementation
[0025] 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.
[0026] In the description of this application, it should be understood that the terms "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0027] Please see Figures 1-3This utility model provides a technical solution: including a mounting base (1), an outer sleeve (2) mounted on the mounting base (1) and formed with a receiving cavity (3). The outer sleeve (2) is provided with a pressing component (4) and has a lifting groove (5) for the lifting guide column (7) to pass through. At the same time, an inner sleeve (6) is provided inside the receiving cavity (3), and the lifting guide column (7) passes through the lifting groove (5) and is engaged with the inner sleeve (6). The point contact stabilizing guide rail (8) fixed inside the pressing component (4) abuts against the vertically opened strip-shaped clamping groove (9) on the inner sleeve (6). When the focal position needs to be adjusted, the adjusting sleeve (10) can be rotated as needed with reference to the scale line. When the adjusting sleeve (10) rotates, one end of the lifting guide column (7) abuts against the internal thread groove (19) at different positions between the spiral thread structure (11), driving the lifting guide column (7) to move vertically along the lifting groove (5). Because the other end of the lifting guide column (7) is connected to the inner sleeve (6), and the inner sleeve (6) is connected to the lens, the up and down movement of the lens can be accurately controlled simply by rotating the adjusting sleeve (10). At the same time, a clamping assembly (4) is designed to prevent the inner sleeve (6) from tilting or shaking. The clamping assembly (4) is set on the outer sleeve (2), and the point contact pressure block (13) of the internal point contact stabilizing guide rail (8) engages with the clamping groove (9) opened in the inner sleeve (6). Since the point contact pressure block (13) is elastic and can be slightly contracted, the stability of the inner sleeve (6) and the smoothness of adjustment are ensured.
[0028] Preferably, an adjusting sleeve (10) is provided outside the outer sleeve (2), and a spiral thread structure (11) that cooperates with the lifting guide column (7) is provided inside the adjusting sleeve (10). The spiral thread structure (11) is spirally arranged along the inner wall of the adjusting sleeve (10). By simply rotating the adjusting sleeve (10), the lifting guide column (7) will drive the inner sleeve (6) to move up and down.
[0029] Preferably, the point contact stabilizing guide rail (8) is fixed inside the clamping assembly (4) by screws (12), and a point contact pressure block (13) is provided on the point contact stabilizing guide rail (8). Under normal conditions, the point contact pressure block (13) locks the inner sleeve (6) to prevent the inner sleeve (6) from shifting position during movement. Alternatively, the point contact pressure block (13) can also be configured to be elastically retractable, so that when adjusting the height, the point contact pressure block (13) can slightly retract within the groove of the inner sleeve (6).
[0030] Preferably, the inner sleeve (6) has connecting threads (14) formed on its inner wall for connecting the lens. The lens moves synchronously with the inner sleeve (6).
[0031] Preferably, a damping ring (15) is installed on the mounting base (1), and the damping ring (15) is located on the inner end face of the adjusting sleeve (10), so that the inside of the adjusting sleeve (10) is a sealed structure, which can effectively isolate external pollutants and make the equipment safer and more reliable during operation.
[0032] Preferably, the lifting guide post (7) is spirally engaged with the guide post fitting hole (16) on the inner sleeve (6). This ensures that the inner sleeve (6) moves stably along the predetermined track during the lifting process. This engagement structure effectively reduces the possible tilting or offset of the inner sleeve, allowing it to maintain a precise lifting trajectory.
[0033] Preferably, the spiral thread structure (11) is spirally distributed on the inner wall of the adjusting sleeve (10). When the inner sleeve (6) rises and falls, the lifting guide post (7) abuts against the internal thread grooves (19) at different positions of the spiral thread structure (11). The rotation axis of the adjusting sleeve (10) is perpendicular to the bottom surface of the receiving cavity (3). Through its spiral design, the spiral thread structure (11) can smoothly and evenly guide the inner sleeve (6) to rise and fall. Each time the adjusting sleeve (10) is rotated, the lifting guide post (7) will rise and fall precisely along the lifting groove (5), thereby ensuring the stability of the movement.
[0034] Preferably, the outer wall of the adjusting sleeve (10) is formed with manual rotation grooves (17) and engraved with digital display scale lines (18). By manually rotating, the operator can accurately adjust the lens height according to the scale lines and digital display, and at the same time, can easily record and review the settings of each adjustment to ensure consistency and accuracy.
[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A focusing mechanism, characterized in that, The device includes a mounting base (1), an outer sleeve (2) mounted on the mounting base (1) and formed with a receiving cavity (3); the outer sleeve (2) is provided with a pressing component (4) and has a lifting groove (5); an inner sleeve (6) is provided in the receiving cavity (3), and a lifting guide post (7) passes through the lifting groove (5) and connects to the inner sleeve (6); the point contact stabilizing guide rail (8) of the pressing component (4) abuts against the clamping groove (9) opened on the inner sleeve (6).
2. The focusing mechanism according to claim 1, characterized in that: An adjusting sleeve (10) is provided outside the outer sleeve (2), and a spiral thread structure (11) that cooperates with the lifting guide column (7) is provided inside the adjusting sleeve (10); when the adjusting sleeve (10) is rotated, the lifting guide column (7) drives the inner sleeve (6) to move up and down.
3. A focusing mechanism according to claim 2, characterized in that: The point contact stabilizing guide rail (8) is connected and fixed inside the clamping assembly (4) by screws (12). The point contact stabilizing guide rail (8) is provided with point contact pressure blocks (13). The point contact pressure blocks (13) are used to lock the inner sleeve (6) to prevent the inner sleeve (6) from shifting position during movement.
4. A focusing mechanism according to claim 2, characterized in that: The inner sleeve (6) has connecting threads (14) formed on its inner wall for connecting the lens.
5. A focusing mechanism according to claim 2, characterized in that: A damping ring (15) is installed on the mounting base (1).
6. A focusing mechanism according to claim 2, characterized in that: The lifting guide column (7) is spirally engaged with the guide column fitting hole (16) opened on the inner sleeve (6).
7. A focusing mechanism according to claim 3, characterized in that: The point contact pressure block (13) is elastically disposed on the point contact stabilizing guide rail (8).
8. A focusing mechanism according to claim 2, characterized in that: The spiral thread structure (11) is spirally distributed on the inner wall of the adjusting sleeve (10); when the inner sleeve (6) is raised or lowered, the lifting guide post (7) abuts against the internal thread groove (19) at different positions between the spiral thread structure (11); the rotation axis of the adjusting sleeve (10) is perpendicular to the bottom surface of the receiving cavity (3).
9. A focusing mechanism according to claim 2, characterized in that: The outer wall of the adjusting sleeve (10) is formed with manual turning grooves (17) and engraved with digital display scale lines (18).