A laser cutting head with a protective mechanism

Abstract

This utility model discloses a laser cutting head with a protective mechanism, comprising a housing, a motor fixedly mounted on one side of the upper end of the housing, a rotating shaft of the motor passing through the housing and fixedly connected to a threaded rod, a movable block sleeved on the threaded rod, the movable block being fixedly connected to a collimating lens mounting seat, a collimating lens fixedly mounted in the center of the collimating lens mounting seat, a total reflection lens provided at the upper end of the housing on the side away from the motor, a focusing lens fixedly mounted in a focusing lens mounting slot, a protective lens fixedly mounted in a protective lens mounting slot, and a laser emitting head provided at the lower end of the housing on the side away from the motor. This laser cutting head can effectively prevent dust, impurities, and cutting spatter from contaminating and damaging optical components, extending the service life of the lens, and ensuring laser transmission efficiency and cutting quality.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting equipment technology, and in particular to a laser cutting head with a protective mechanism. Background Technology

[0002] Laser cutting technology, with its advantages of high cutting precision, high speed, and small heat-affected zone, is widely used in metal processing, sheet metal cutting, and other fields. As the core component of laser cutting equipment, the performance of the laser cutting head directly affects cutting quality and efficiency. In existing laser cutting heads, the internal collimating lenses, focusing lenses, and other optical components are easily contaminated by dust, impurities, and spatter generated during the cutting process. This leads to reduced laser transmission efficiency, decreased cutting precision, and even damage to the lenses, increasing operating costs. Therefore, we propose a laser cutting head with a protective mechanism. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a laser cutting head with a protective mechanism. This invention solves the problem that in existing laser cutting heads, internal optical components such as collimating lenses and focusing lenses are easily contaminated by dust, impurities, and spatter generated during the cutting process, leading to reduced laser transmission efficiency, decreased cutting accuracy, and even damage to the lenses, thus increasing operating costs.

[0004] This utility model discloses a laser cutting head with a protective mechanism, comprising a housing, a motor fixedly mounted on one side of the upper end of the housing, a rotating shaft of the motor passing through the housing and fixedly connected to a threaded rod, a movable block sleeved on the threaded rod, the movable block being fixedly connected to a collimating lens mounting seat, a collimating lens fixedly mounted in the center of the collimating lens mounting seat, a total reflection lens provided at the upper end of the housing on the side away from the motor, a focusing lens mounting groove provided below the total reflection lens on the housing, a focusing lens fixedly mounted in the focusing lens mounting groove, a protective lens mounting groove provided below the focusing lens mounting groove on the housing, a protective lens fixedly mounted in the protective lens mounting groove, and a laser emitting head provided at the lower end of the housing on the side away from the motor.

[0005] In the above scheme, the housing is provided with an optical fiber connection port on the side near the motor.

[0006] In the above scheme, the housing is provided with first guide rails on both sides of the movable block, and the movable block is provided with limiting grooves that match the first guide rails.

[0007] In the above scheme, the collimating lens mounting base is provided with a slider in the middle of the side away from the movable block, and the housing is provided with a second guide rail that matches the slider.

[0008] In the above scheme, the housing is provided with a first cover plate on the outside of the total reflection mirror.

[0009] In the above scheme, the housing is provided with a second cover plate on the outside of the focusing lens mounting slot.

[0010] In the above scheme, the housing is provided with a third cover plate outside the protective lens mounting slot.

[0011] In the above solution, the housing is provided with connecting seats on both sides of the focusing lens mounting slot, and the connecting seats are provided with mounting holes at both ends.

[0012] The advantages and beneficial effects of this utility model are as follows: This utility model provides a laser cutting head with a protective mechanism. By setting a protective lens and a first cover plate, a second cover plate, and a third cover plate corresponding to the total reflection lens, the focusing lens, and the protective lens respectively, it can effectively prevent dust, impurities, and cutting spatter from contaminating and damaging the optical elements, extend the service life of the lens, and ensure laser transmission efficiency and cutting quality. The motor drives the threaded rod to move the movable block, thereby adjusting the position of the collimating lens. At the same time, through the double guiding and limiting cooperation of the first guide rail and the limiting groove, and the slider and the second guide rail, the adjustment process of the collimating lens is made more stable, avoiding deviation and improving the laser collimation effect. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a partial sectional view of the present invention.

[0017] In the diagram: 1. Housing; 2. Motor; 3. Threaded rod; 4. Movable block; 5. Collimating lens mounting base; 6. Collimating lens; 7. Total reflection lens; 8. Focusing lens mounting slot; 9. Focusing lens; 10. Protective lens mounting slot; 11. Protective lens; 12. Laser emitter; 13. Fiber optic connector; 14. First guide rail; 15. Limiting groove; 16. Slider; 17. Second guide rail; 18. First cover plate; 19. Second cover plate; 20. Third cover plate; 21. Connecting seat; 22. Mounting hole. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] like Figure 1-3 As shown, this utility model is a laser cutting head with a protective mechanism, including a housing 1. A motor 2 is fixedly installed on one side of the upper end of the housing 1. The motor 2 is a servo motor, which has the advantage of high control precision. The rotating shaft of the motor 2 passes through the housing 1 and is fixedly connected to a threaded rod 3. The two ends of the threaded rod 3 are movably connected to the housing 1. A movable block 4 is sleeved on the threaded rod 3 and threadedly connected to the threaded rod 3. The movable block 4 is fixedly connected to a collimating lens mounting seat 5. A collimating lens 6 is fixedly installed in the middle of the collimating lens mounting seat 5. When the motor 2 is working, the motor 2 drives the threaded rod 3 to rotate. When the threaded rod 3 rotates, the movable block 4 can reciprocate horizontally on the threaded rod 3. Through the transmission of the movable block 4, the collimating lens mounting seat 5 also moves accordingly. The collimating lens 6 can collimate different optical fibers. The upper part of the housing 1 away from the motor 2 is provided with a total reflection lens 7. The total reflection lens 7 is tilted at an angle of 45°, which can change the propagation direction of the laser. The housing 1 is provided with a focusing lens mounting groove 8 below the total reflection lens 7. A focusing lens 9 is fixedly installed in the focusing lens mounting groove 8. The focusing lens 9 is used to focus the laser and improve the energy density of the laser. The housing 1 is provided with a protective lens mounting groove 10 below the focusing lens mounting groove 8. A protective lens 11 is fixedly installed in the protective lens mounting groove 10. The protective lens 11 is made of quartz glass with high light transmittance and high hardness, which can effectively block splashes and impurities. The lower part of the housing 1 away from the motor 2 is provided with a laser emitting head 12.

[0020] The housing 1 is provided with an optical fiber connector 13 on the side near the motor 2. The optical fiber connector 13 is used to connect optical fibers to realize laser input. The optical fiber connector 13 is provided with a sealing gasket to improve the sealing of the optical fiber connection and prevent dust from entering.

[0021] The housing 1 is provided with first guide rails 14 on both sides of the movable block 4. The movable block 4 is provided with limiting grooves 15 that match the first guide rails 14. A through groove is provided between the two first guide rails 14. The movable block 4 passes through the through groove and is fixedly connected to the collimating lens mounting seat 5. Through the cooperation of the first guide rails 14 and the limiting grooves 15, the movement of the movable block 4 is guided and limited, thereby improving the stability of the collimating lens 6 adjustment.

[0022] The collimating lens mounting base 5 has a slider 16 in the middle of the side away from the movable block 4. The housing 1 has a second guide rail 17 that matches the slider 16. The slider 16 can slide on the second guide rail 17. Through the cooperation between the slider 16 and the second guide rail 17, the stability of the movement of the collimating lens mounting base 5 is further enhanced, and the deviation during the adjustment process is avoided.

[0023] The housing 1 is provided with a first cover plate 18 located outside the total reflection mirror 7.

[0024] The housing 1 is provided with a second cover plate 19 located outside the focusing lens mounting slot 8.

[0025] The housing 1 is provided with a third cover plate 20 on the outside of the protective lens mounting slot 10. The first cover plate 18, the second cover plate 19 and the third cover plate 20 respectively protect the total reflection lens 7, the focusing lens 9 and the protective lens 11, preventing dust and impurities from entering, and facilitating the installation and replacement of the lens.

[0026] The housing 1 is provided with connecting seats 21 on both sides of the focusing lens mounting slot 8. Each connecting seat 21 has a mounting hole 22 at both ends. The connecting seats 21 and the mounting holes 22 facilitate the installation of the laser cutting head on the laser cutting equipment, thereby improving the convenience and stability of the installation.

[0027] Specifically, in this invention, an optical fiber is connected via fiber optic connector 13. The laser is input through the fiber optic cable, collimated by collimating lens 6, and then directed towards total internal reflection lens 7. Total internal reflection lens 7 reflects the laser to focusing lens 9, which focuses the laser before it passes through protective lens 11 and exits from laser emitter 12 for cutting. When the position of collimating lens 6 needs adjustment, motor 2 is started, driving threaded rod 3 to rotate. Threaded rod 3 drives movable block 4 to move along first guide rail 14. Simultaneously, collimating lens mounting base 5 moves along second guide rail 17 via slider 16, achieving smooth adjustment of the collimating lens 6's position. During use, first cover plate 18, second cover plate 19, and third cover plate 20 protect each lens. When lens maintenance is required, the corresponding cover plate can be opened for inspection, cleaning, or replacement. The laser cutting head can be mounted on the laser cutting equipment via connecting base 21 and mounting hole 22.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 laser cutting head with a protective mechanism, comprising a housing (1), characterized in that, A motor (2) is fixedly installed on one side of the upper end of the housing (1). The rotating shaft of the motor (2) passes through the housing (1) and is fixedly connected to the threaded rod (3). A movable block (4) is sleeved on the threaded rod (3). The movable block (4) is fixedly connected to the collimating lens mounting seat (5). A collimating lens (6) is fixedly installed in the middle of the collimating lens mounting seat (5). A total reflection lens (7) is provided on the upper end of the housing (1) away from the motor (2). A focusing lens mounting groove (8) is provided on the housing (1) below the total reflection lens (7). A focusing lens (9) is fixedly installed in the focusing lens mounting groove (8). A protective lens mounting groove (10) is provided on the housing (1) below the focusing lens mounting groove (8). A protective lens (11) is fixedly installed in the protective lens mounting groove (10). A laser emitting head (12) is provided on the lower end of the housing (1) away from the motor (2).

2. The laser cutting head with a protection mechanism according to claim 1, characterized in that, The housing (1) has an optical fiber connector (13) on the side near the motor (2).

3. The laser cutting head with a protection mechanism according to claim 1, characterized in that, The housing (1) is provided with first guide rails (14) on both sides of the movable block (4), and the movable block (4) is provided with limiting grooves (15) that match the first guide rails (14).

4. The laser cutting head with a protection mechanism according to claim 1, characterized in that, The collimating lens mounting base (5) has a slider (16) in the middle of the side away from the movable block (4), and the housing (1) has a second guide rail (17) that matches the slider (16).

5. The laser cutting head with a protection mechanism according to claim 1, wherein, The housing (1) is provided with a first cover plate (18) located outside the total reflection mirror (7).

6. The laser cutting head with a protection mechanism according to claim 1, characterized in that, The housing (1) is provided with a second cover plate (19) located outside the focusing lens mounting slot (8).

7. The laser cutting head with a protection mechanism according to claim 1, characterized in that, The housing (1) is provided with a third cover plate (20) located outside the protective lens mounting groove (10).

8. The laser cutting head with a protection mechanism according to claim 1, characterized in that, The housing (1) is provided with connecting seats (21) on both sides of the focusing lens mounting groove (8), and the connecting seats (21) are provided with mounting holes (22) at both ends.

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