Lens adjusting mechanism of laser cutting equipment

Abstract

The utility model relates to the technical field of laser cutting equipment, in particular to a laser cutting equipment lens adjusting mechanism which comprises a base plate with sliding holes formed in the two ends, sliding blocks are connected in inner cavities of the two sliding holes in a sliding mode, and a collimating lens and a focusing lens are installed at one ends of the two sliding blocks respectively. And the collimating lens and the focusing lens are coaxially arranged. The laser cutting device overcomes the defects in the prior art, through matched arrangement of the sliding blocks, the lead screw, the lug plates, the motor, the protective cover and other structures, the motor is used for driving the lead screw to rotate, pushing the two sliding blocks to move and adjusting the distance between the collimating lens and the focusing lens till laser spots are converged into one point on a workpiece, and then the workpiece can be cut; the problems that the positions of a collimating lens and a focusing lens of an existing laser cutting machine are not flexible enough, laser cannot be effectively converged, light spots are formed on the surface of a workpiece to be cut, the power density is low, and the laser cutting thickness and cutting efficiency are affected are avoided as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting equipment, in particular to a lens adjustment mechanism for laser cutting equipment. Background Art

[0002] Laser cutting uses a focused high-power density laser beam to irradiate the workpiece, causing the irradiated material to melt, vaporize, ablate or reach the ignition point quickly.

[0003] The high-pressure gas or impact metal vapor pressure blows away the molten material, relatively moves the convergence point of the laser on the material, and thus cuts the workpiece.

[0004] The position adjustment of the collimating lens and focusing lens of the existing laser cutting machine is not flexible enough, the laser cannot be effectively converged, and a light spot is formed on the surface of the workpiece to be cut. The power density is low, which affects the thickness and cutting efficiency of the laser cutting. Utility Model Content

[0005] The purpose of the utility model is to solve or at least alleviate the problem that the position adjustment of the collimating lens and the focusing lens of the existing laser cutting machine is not flexible enough, the laser cannot be effectively converged, a light spot is formed on the surface of the workpiece to be cut, the power density is low, and the thickness and cutting efficiency of the laser cutting are affected.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lens adjustment mechanism for laser cutting equipment, comprising a base plate with sliding holes at both ends, two sliders are slidably connected in the inner cavities of the two sliding holes, a collimating lens and a focusing lens are respectively installed at one end of the two sliders, and the collimating lens and the focusing lens are coaxially arranged, an adjustment structure for adjusting the position of the slider is installed on the outer surface of the base plate at the other end of the slider, the adjustment structure comprises an ear plate fixedly connected to the end of the slider, a protective cover fixedly connected to the base plate on the outer side of the ear plate, a screw rod screwed to the ear plate is passed through the two ear plates, both ends of the screw rod penetrate the side wall of the protective cover and are rotatably connected to the protective cover, a motor for driving the screw rod to rotate is fixedly connected to the ends of the two protective covers, and a fine-tuning device for adjusting the distance between the collimating lens and the focusing lens is also installed on the base plate between the collimating lens and the focusing lens.

[0007] Optionally, the inner cavity of the sliding hole is a rectangular structure, the width of the sliding block is equal to the inner cavity width of the sliding hole, and the side walls of the sliding block are in sliding contact with the inner wall of the sliding hole.

[0008] Optionally, bearings are provided at the connection points between both ends of the screw rod and the side wall of the protective cover, the inner ring of the bearing is fixedly connected to the screw rod, and the outer ring of the bearing is embedded in the inside of the side wall of the protective cover and fixedly connected to the side wall of the protective cover.

[0009] Optionally, a T-shaped groove with one end sealed is provided at one end of the slider away from the ear plate, and a T-shaped connecting block is fixedly connected to the collimating lens and the focusing lens. The T-shaped connecting block is clamped with the slider through the T-shaped groove, and the T-shaped connecting block can slide in the inner cavity of the T-shaped groove.

[0010] Optionally, a spring is embedded in the inner cavity of the T-shaped slide groove, one end of the spring is fixedly connected to the inner wall of the sealing end of the T-shaped slide groove, and the other end of the spring is abutted against the side wall of the T-shaped connecting block.

[0011] Optionally, the fine-tuning device includes a mounting plate fixedly connected to the middle section of the base plate, and electric telescopic rods are fixedly mounted on both ends of the mounting plate, and the output ends of the two electric telescopic rods are respectively positioned opposite to the open ends of the two T-shaped slide grooves.

[0012] Optionally, guide grooves are provided on the side walls on both sides of the inner cavity of the sliding hole, and guide blocks corresponding to the guide grooves are fixedly connected to the outer walls on both sides of the sliding block. The guide blocks are embedded in the guide grooves and are slidably connected to the inner wall of the sliding hole through the guide grooves.

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

[0014] (1) Through the coordination of the slider, screw, ear plate, motor and protective cover, the motor is used to drive the screw to rotate, push the two sliders to move, and adjust the distance between the collimating lens and the focusing lens until the laser spot is converged to a point on the workpiece, and then the workpiece can be cut. This avoids the problem that the position adjustment of the collimating lens and the focusing lens of the existing laser cutting machine is not flexible enough, the laser cannot be effectively converged, and a spot is formed on the surface of the workpiece to be cut, the power density is low, and the thickness and cutting efficiency of the laser cutting are affected;

[0015] (2) The collimating lens and the focusing lens are both installed in the T-shaped groove opened at the end of the slider through the T-shaped connecting block. When the position of the collimating lens and the focusing lens needs to be fine-tuned, the electric telescopic rod can be started to extend, so that the output end of the electric telescopic rod extends to the inside of the T-shaped groove through the opening at one end of the T-shaped groove, and squeezes the T-shaped connecting block to move in the inner cavity of the T-shaped groove 11, so as to achieve fine-tuning of the position of the collimating lens and the focusing lens installed on the T-shaped connecting block. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the installation structure of the transmission frame of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the pulverizing roller and the pulverizing motor of the utility model.

[0019] In the figure: 1. Base plate; 2. Slide hole; 3. Sliding block; 4. Collimating lens; 5. Focusing lens; 6. Ear plate; 7. Protective cover; 8. Screw rod; 9. Bearing; 10. Motor; 11. T-type slide groove; 12. Spring; 13. T-type connecting block; 14. Mounting plate; 15. Electric telescopic rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 A lens adjustment mechanism for laser cutting equipment includes a base plate 1 with sliding holes 2 at both ends, a slider 3 is slidably connected in the inner cavity of the two sliding holes 2, and a collimating lens 4 and a focusing lens 5 are respectively installed at one end of the two sliders 3, and the collimating lens 4 and the focusing lens 5 are coaxially arranged. When the two sliders 3 move in the inner cavity of the sliding hole 2, the collimating lens 4 and the focusing lens 5 can be driven by the two sliders 3 to move toward or in the opposite direction, and the distance between the collimating lens 4 and the focusing lens 5 can be adjusted to control the size of the laser beam when it is emitted from the collimating lens 4 to the focusing lens 5, and the distance between the workpiece to be processed and the focusing lens 5 can be controlled, thereby controlling the position and size of the light spot convergence. When the laser light spot is converged to a point on the workpiece, the workpiece can be cut.

[0022] An adjustment structure for adjusting the position of the slider 3 is installed on the outer surface of the base plate 1 at the other end of the slider 3. The adjustment structure includes an ear plate 6 fixedly connected to the end of the slider 3. A protective cover 7 fixedly connected to the base plate 1 is provided on the outer side of the ear plate 6. A screw 8 screwed to the ear plate 6 is passed through the two ear plates 6. Both ends of the screw 8 penetrate the side wall of the protective cover 7 and are rotatably connected to the protective cover 7. The ends of the two protective covers 7 are fixedly connected to a motor 10 for driving the screw 8 to rotate. When in use, the user can start the motor 10, and the motor 10 drives the screw 8 to rotate. Under the action of the thread, the two sliders 3 are pushed to move along the inner cavity of the slide hole 2 to adjust the distance between the collimating lens 4 and the focusing lens 5.

[0023] A fine-tuning device for adjusting the distance between the collimating lens 4 and the focusing lens 5 is also installed on the substrate 1 between the collimating lens 4 and the focusing lens 5. When it is difficult to adjust the collimating lens 4 and the focusing lens 5 to a precise position by simply rotating the screw 8, further adjustment can be performed through the fine-tuning device to improve the cutting accuracy.

[0024] For details, please refer to Figure 1 The inner cavity of the slide hole 2 is a rectangular structure, the width of the slider 3 is equal to the inner cavity width of the slide hole 2, and the side walls of the slider 3 are in sliding contact with the inner wall of the slide hole 2. The width of the slider 3 is equal to the inner cavity width of the slide hole 2, which can avoid the slider 3 from twisting in the inner cavity of the slide hole 2 when the screw rod 8 rotates, resulting in the problem of the position of the collimating lens 4 and the focusing lens 5 being offset.

[0025] For details, please refer to Figure 1 The connection between the two ends of the screw rod 8 and the side wall of the protective cover 7 is sleeved with bearings 9, the inner ring of the bearing 9 is fixedly connected to the screw rod 8, and the outer ring of the bearing 9 is embedded in the side wall of the protective cover 7 and fixedly connected to the side wall of the protective cover 7. The bearing 9 is provided to reduce the resistance effect when the screw rod 8 rotates, so that the motor 10 drives the screw rod 8 to rotate and adjust the position of the slider 3.

[0026] For details, please refer to Figure 2 The end of the slider 3 away from the ear plate 6 is provided with a sealed T-shaped groove 11, and the collimating lens 4 and the focusing lens 5 are fixedly connected with a T-shaped connecting block 13, which is clamped with the slider 3 through the T-shaped groove 11, and the T-shaped connecting block 13 can slide in the inner cavity of the T-shaped groove 11. The T-shaped groove 11 and the T-shaped connecting block 13 are provided for mounting the collimating lens 4 and the focusing lens 5 on the slider 3, and the T-shaped connecting block 13 can slide in the inner cavity of the T-shaped groove 11 to facilitate fine adjustment of the positions of the collimating lens 4 and the focusing lens 5.

[0027] For details, please refer to Figure 2 A spring 12 is embedded in the inner cavity of the T-shaped slide groove 11, one end of the spring 12 is fixedly connected to the inner wall of the sealing end of the T-shaped slide groove 11, and the other end of the spring 12 is in contact with the side wall of the T-shaped connecting block 13. After the collimating lens 4 and the focusing lens 5 installed on the T-shaped connecting block 13 are finely adjusted by the fine-tuning device, the spring 12 can reset the T-shaped connecting block 13 under the action of its own elastic force, so as to facilitate the fine-tuning of the collimating lens 4 and the focusing lens 5 next time.

[0028] For details, please refer to Figure 1The fine-tuning device includes a mounting plate 14 fixedly connected to the middle section of the base plate 1, and electric telescopic rods 15 are fixedly installed at both ends of the mounting plate 14. The output ends of the two electric telescopic rods 15 are respectively aligned with the open ends of the two T-shaped slide grooves 11. When in use, the electric telescopic rod 15 is started to extend, so that the output end of the electric telescopic rod 15 extends through the opening at one end of the T-shaped slide groove 11 to the inside thereof, and squeezes the T-shaped connecting block 13 to move in the inner cavity of the T-shaped slide groove 11, so as to fine-tune the positions of the collimating lens 4 and the focusing lens 5 installed on the T-shaped connecting block 13.

[0029] Specifically, refer to Figure 3 Guide grooves are provided on the side walls on both sides of the inner cavity of the slide hole 2, and guide blocks corresponding to the guide grooves are fixedly connected to the outer walls on both sides of the slider 3. The guide blocks are embedded in the guide grooves and slidably connected to the inner wall of the slide hole 2 through the guide grooves. The provision of the guide grooves and the guide blocks can not only guide the moving path of the slider 3, but also prevent the slider 3 from slipping out of the inner cavity of the slide hole 2 as much as possible.

[0030] Working principle: When in use, the user first starts the motor 10, and drives the lead screw 8 to rotate through the motor 10. Under the action of the thread, the two sliders 3 are pushed to move along the inner cavity of the slide hole 2 to adjust the distance between the collimating lens 4 and the focusing lens 5, control the size of the laser beam when it is emitted from the collimating lens 4 to the focusing lens 5, and control the distance between the workpiece to be processed and the focusing lens 5, thereby controlling the position and size of the light spot convergence. When the laser spot is converged to a point on the workpiece, the workpiece can be cut, which avoids the problem that the position adjustment of the collimating lens and the focusing lens of the existing laser cutting machine is not flexible enough, the laser cannot be effectively converged, and a light spot is formed on the surface of the workpiece to be cut, the power density is low, and the thickness and cutting efficiency of the laser cutting are affected.

[0031] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A lens adjustment mechanism for laser cutting equipment, comprising a substrate (1) with sliding holes (2) at both ends, two sliding holes (2) having inner cavities in which sliders (3) are slidably connected, one end of the two sliders (3) being respectively provided with a collimating lens (4) and a focusing lens (5), and the collimating lens (4) and the focusing lens (5) being coaxially arranged, and an adjustment structure for adjusting the position of the slider (3) being installed on the outer surface of the substrate (1) at the other end of the slider (3), characterized in that: The adjustment structure comprises an ear plate (6) fixedly connected to the end of the slider (3); a protective cover (7) is provided on the outer side of the ear plate (6) and is fixedly connected to the base plate (1) on the circumferential side; a screw rod (8) is passed through the two ear plates (6) and is screwed to the ear plates (6); both ends of the screw rod (8) pass through the side wall of the protective cover (7) and are rotatably connected to the protective cover (7); a motor (10) for driving the screw rod (8) to rotate is fixedly connected to the ends of the two protective covers (7); and a fine-tuning device for adjusting the distance between the collimating lens (4) and the focusing lens (5) is also installed on the base plate (1) between the collimating lens (4) and the focusing lens (5).

2. The lens adjustment mechanism for laser cutting equipment according to claim 1, characterized in that: The inner cavity of the sliding hole (2) is of a rectangular structure, the width of the sliding block (3) is equal to the inner cavity width of the sliding hole (2), and the side walls of the sliding block (3) are in sliding contact with the inner wall of the sliding hole (2).

3. The lens adjustment mechanism for laser cutting equipment according to claim 1, characterized in that: Bearings (9) are sleeved at the connection points between the two ends of the screw rod (8) and the side wall of the protective cover (7); the inner ring of the bearing (9) is fixedly connected to the screw rod (8); and the outer ring of the bearing (9) is embedded in the side wall of the protective cover (7) and fixedly connected to the side wall of the protective cover (7).

4. The lens adjustment mechanism for laser cutting equipment according to claim 1, characterized in that: A T-shaped slide groove (11) with one end sealed is provided at one end of the slider (3) away from the ear plate (6); a T-shaped connecting block (13) is fixedly connected to the collimating lens (4) and the focusing lens (5); the T-shaped connecting block (13) is snap-connected to the slider (3) via the T-shaped slide groove (11), and the T-shaped connecting block (13) can slide in the inner cavity of the T-shaped slide groove (11).

5. The lens adjustment mechanism for laser cutting equipment according to claim 4, characterized in that: A spring (12) is embedded in the inner cavity of the T-shaped slide groove (11), one end of the spring (12) is fixedly connected to the inner wall of the sealing end of the T-shaped slide groove (11), and the other end of the spring (12) is in contact with the side wall of the T-shaped connecting block (13).

6. The lens adjustment mechanism for laser cutting equipment according to claim 5, characterized in that: The fine-tuning device comprises a mounting plate (14) fixedly connected to the middle section of the base plate (1), electric telescopic rods (15) being fixedly mounted at both ends of the mounting plate (14), and the output ends of the two electric telescopic rods (15) are respectively positioned opposite to the open ends of the two T-shaped slide grooves (11).

7. The lens adjustment mechanism for laser cutting equipment according to claim 2, characterized in that: Guide grooves are provided on the side walls on both sides of the inner cavity of the sliding hole (2), and guide blocks corresponding to the guide grooves are fixedly connected to the outer walls on both sides of the sliding block (3). The guide blocks are embedded in the guide grooves and are slidably connected to the inner wall of the sliding hole (2) through the guide grooves.

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