Laser cutting machine

Abstract

The utility model aims to provide the laser cutting machine which is compact in structure, high in slicing efficiency and capable of realizing uninterrupted slicing and randomly setting cutting patterns. The laser cutting device comprises a mounting frame, a laser cutting module is arranged on the mounting frame and comprises a laser device and a laser galvanometer, the laser device is matched with the laser galvanometer in a refraction mode, a first linear module driven in the X-axis direction is arranged on the side portion of the mounting frame, and a second linear module driven in the X-axis direction is arranged on the side portion of the mounting frame. A second linear module driven in the Z-axis direction is arranged at the action end of the first linear module, the laser galvanometer is arranged at the action end of the second linear module, a plurality of third linear modules driven in the Y-axis direction are arranged below the mounting frame, and the third linear modules are arranged in parallel; and a workpiece platform is arranged at the action end of the third linear module. The laser cutting device is applied to the technical field of laser cutting.

Description

Technical Field

[0001] The utility model is applied to the technical field of laser cutting, and particularly relates to a laser cutting machine. Background Art

[0002] Laser cutting is to irradiate a workpiece with a high-power density laser beam focused by a focusing device, so that the irradiated product quickly melts, vaporizes, ablates or reaches the ignition point. At the same time, the molten material is blown away by a high-speed air flow coaxial with the light beam, so as to cut the workpiece. The laser emitted from the laser is focused into a high-power density laser beam through an optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point. At the same time, the high-pressure gas coaxial with the light beam blows away the melted or vaporized metal. As the relative position of the light beam and the workpiece moves, a cut is finally formed in the material, so as to achieve the purpose of cutting. However, most of the existing laser cutting machines can only perform cutting at a single station. After the previous group of workpieces are cut and the pieces are retracted, the next group of workpieces can be loaded for cutting. Obviously, this increases the standby time of the cutting machine, the working efficiency is relatively low, and the number of slices completed per unit time is low. Therefore, it is necessary to provide a laser cutting machine with a compact structure, high slicing efficiency, continuous slicing, and arbitrarily set cutting patterns. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a laser cutting machine with a compact structure, high slicing efficiency, continuous slicing, and arbitrarily set cutting patterns.

[0004] The technical solution adopted by the utility model is as follows: The utility model includes a mounting frame. Taking the length of the mounting frame as the X-axis direction, the width of the mounting frame as the Y-axis direction, and the height of the mounting frame as the Z-axis direction, a laser cutting module is arranged on the mounting frame. The laser cutting module includes a laser and a laser galvanometer. The laser is refracted and matched with the laser galvanometer. A first linear module driven along the X-axis direction is arranged on the side of the mounting frame. The moving end of the first linear module is provided with a second linear module driven along the Z-axis direction. The laser galvanometer is arranged at the moving end of the second linear module. A plurality of third linear modules driven along the Y-axis direction are arranged below the mounting frame. The plurality of third linear modules are arranged in parallel. The moving end of the third linear module is provided with a workpiece platform.

[0005] As can be seen from the above solution, the laser beam emitted by the laser passes through multiple refractions and then enters the galvanometer scanner. The first linear module and the second linear module respectively drive the galvanometer scanner to move along the X-axis direction and the Z-axis direction, and the third linear module drives the workpiece platform to move along the Y-axis direction. The first linear module and the second linear module drive the galvanometer scanner to achieve flying in two directions of the optical path, namely the X-axis and the Z-axis. In cooperation with the workpiece platform, laser cutting processing of any pattern within the XY-axis movement range can be realized. At the control level, the galvanometer scanner and the workpiece platform perform multi-axis linkage cutting, which can realize the cutting of complex continuous patterns with an infinite laser field of view, and avoid the problem of splicing gaps generated by the splicing cutting of continuous patterns. The equipment adopts a left-right dual-platform ping-pong mechanism, which can realize the synchronous operation of manual loading and unloading and laser cutting, improve the equipment efficiency, and the two workpiece platforms alternately cycle for loading and unloading and laser cutting.

[0006] A preferred solution is that the laser cutting module further includes a first horizontal mirror, a second horizontal mirror, a first vertical mirror and a second vertical mirror. The first horizontal mirror and the second horizontal mirror are both arranged on the mounting frame. A first mounting plate is arranged at the moving end of the first linear module. The second linear module and the first vertical mirror are both arranged on the first mounting plate. The laser, the first horizontal mirror, the second horizontal mirror and the first vertical mirror are in the same horizontal plane. The second vertical mirror is arranged below the first vertical mirror. The galvanometer scanner and the second vertical mirror are in the same horizontal plane. The laser emitted by the laser is sequentially reflected by the first horizontal mirror, the second horizontal mirror, the first vertical mirror and the second vertical mirror and then enters the galvanometer scanner, and the galvanometer scanner irradiates the laser beam onto the workpiece platform.

[0007] A preferred solution is that the axis angle between the laser and the first horizontal mirror is 45°, the axis angle between the first horizontal mirror and the second horizontal mirror is 90°, the plane where the second horizontal mirror is located intersects the plane where the first vertical mirror is located, and the included angle between the two planes is 45°. The axis angle between the first vertical mirror and the second vertical mirror is 90°.

[0008] A preferred solution is that the laser cutting module further includes a laser beam expander, and the laser beam expander is arranged between the first horizontal mirror and the second horizontal mirror. The laser passes through the first horizontal mirror, the laser beam expander and the second horizontal mirror in sequence.

[0009] One preferred solution is that a second mounting plate is provided at the moving end of the second linear module. The laser galvanometer is arranged downward at the second mounting plate. A dust removal sheet metal is arranged below the laser galvanometer. The laser galvanometer irradiates the workpiece platform with a laser beam through the dust removal sheet metal.

[0010] One preferred solution is that the laser cutting module further includes a positioning camera, and the positioning camera is arranged on the side of the second mounting plate.

[0011] One preferred solution is that the laser cutting module further includes a laser focusing field lens, and the laser focusing field lens is arranged at the light outlet of the laser galvanometer.

[0012] One preferred solution is that the workpiece platform is an adsorption platform, the adsorption platform is connected to an external vacuum source, and three groups of positioning blocks are arranged on the upper surface of the adsorption platform. The three groups of positioning blocks are respectively arranged on three sides of the upper surface of the adsorption platform, and the other side is used as the loading place for the workpiece. Description of the Drawings

[0013] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0014] Figure 2 is a three-dimensional structural schematic diagram of a part of the laser cutting module;

[0015] Figure 3 is a three-dimensional structural schematic diagram of the moving end of the first linear module;

[0016] Figure 4 is a three-dimensional structural schematic diagram of the workpiece platform;

[0017] Figure 5 is a three-dimensional structural schematic diagram of the dust removal sheet metal. Detailed Embodiments

[0018] As Figures 1 to 4 shown, in this embodiment, the present utility model includes a mounting frame 1. Taking the length of the mounting frame 1 as the X-axis direction, the width of the mounting frame 1 as the Y-axis direction, and the height of the mounting frame 1 as the Z-axis direction, a laser cutting module is arranged on the mounting frame 1. The laser cutting module includes a laser 3 and a laser galvanometer 4, and the laser 3 is refractionally matched with the laser galvanometer 4. A first linear module 5 driven along the X-axis direction is arranged on the side of the mounting frame 1. A second linear module 6 driven along the Z-axis direction is arranged at the moving end of the first linear module 5. The laser galvanometer 4 is arranged at the moving end of the second linear module 6. A plurality of third linear modules 7 driven along the Y-axis direction are arranged below the mounting frame 1. The plurality of third linear modules 7 are arranged in parallel. A workpiece platform 8 is arranged at the moving end of the third linear module 7.

[0019] An artificial or robotic arm places the product workpiece on the upper surface of the workpiece platform 8. The workpiece platform 8 adsorbs the bottom of the product workpiece. The first linear module 5 and the second linear module 6 respectively drive the laser galvanometer 4 to a specified position. The laser emitted by the laser device 3 is reflected and enters the laser galvanometer 4. The laser galvanometer 4 irradiates the laser beam onto the workpiece surface of the workpiece platform 8. The laser emitted by the laser device 3 passes through the laser galvanometer 4 for focused cutting. The first linear module 5 and the second linear module 6 drive the laser galvanometer 4 to achieve flight in two directions of the optical path XZ; the first linear module 5 and the second linear module 6 perform a composite motion to fit the cutting trajectory.

[0020] As Figures 1 to 4 shown, in this embodiment, the laser cutting module further includes a first horizontal mirror 9, a second horizontal mirror 10, a first vertical mirror 11, and a second vertical mirror 12. The first horizontal mirror 9 and the second horizontal mirror 10 are both arranged on the mounting bracket 1. The moving end of the first linear module 5 is provided with a first mounting plate 13. The second linear module 6 and the first vertical mirror 11 are both arranged on the first mounting plate 13. The laser device 3, the first horizontal mirror 9, the second horizontal mirror 10, and the first vertical mirror 11 are in the same horizontal plane. The second vertical mirror 12 is arranged below the first vertical mirror 11. The laser galvanometer 4 and the second vertical mirror 12 are in the same horizontal plane. The laser emitted by the laser device 3 is reflected successively by the first horizontal mirror 9, the second horizontal mirror 10, the first vertical mirror 11, and the second vertical mirror 12 and enters the laser galvanometer 4. The laser galvanometer 4 irradiates the laser beam onto the workpiece platform 8. The laser emitted by the laser device 3 is reflected successively by the first horizontal mirror 9, the second horizontal mirror 10, the first vertical mirror 11, and the second vertical mirror 12 and enters the laser galvanometer 4.

[0021] As Figures 1 to 4 shown, in this embodiment, the axis angle between the laser device 3 and the first horizontal mirror 9 is 45°. The axis angle between the first horizontal mirror 9 and the second horizontal mirror 10 is 90°. The plane where the second horizontal mirror 10 is located intersects the plane where the first vertical mirror 11 is located, and the included angle between the two planes is 45°. The axis angle between the first vertical mirror 11 and the second vertical mirror 12 is 90°. The optical path system formed by the reflection of multiple sets of mirrors focuses into a laser beam with a high power density. The laser beam irradiates the workpiece surface, causing the workpiece to reach the melting point or boiling point.

[0022] As Figures 1 to 4As shown, in this embodiment, the laser cutting module further includes a laser beam expander 14, which is disposed between the first horizontal mirror 9 and the second horizontal mirror 10. The laser passes through the first horizontal mirror 9, the laser beam expander 14, and the second horizontal mirror 10 in sequence. All laser beam lines are conducted in a sealed pipeline. The laser beam expander 14 is used to expand the diameter of the laser beam and reduce the divergence angle of the laser beam.

[0023] As Figure 1 , Figure 5 As shown, in this embodiment, a second mounting plate 15 is provided at the moving end of the second linear module 6. The laser galvanometer 4 is disposed downward at the second mounting plate 15. A dust removal sheet metal 16 is disposed below the laser galvanometer 4. The laser galvanometer 4 irradiates the laser beam onto the workpiece platform 8 through the dust removal sheet metal 16. A plurality of air holes are formed on the inner side of the dust removal sheet metal 16. The plurality of air holes are connected to an external vacuum source through an air pipe. The laser galvanometer 4 irradiates the laser beam onto the workpiece surface of the workpiece platform 8 through the dust removal sheet metal 16. The dust removal sheet metal 16 adopts a vacuum adsorption method to adsorb the dust between the laser galvanometer 6 and the workpiece, ensuring that the laser beam emitted by the laser galvanometer 4 is unobstructed, and playing a role in adsorbing and removing dust.

[0024] As Figures 1 to 4 As shown, in this embodiment, the laser cutting module further includes a positioning camera 17, which is disposed at the side of the second mounting plate 15. The positioning camera 17 is used to scan the measured position of the workpiece. The first linear module 5 and the second linear module 6 perform a combined movement to achieve visual focusing and grab the product feature point positioning. In cooperation with the laser 3 emitting light and focusing and cutting through the laser galvanometer 4, the combined movement of the first linear module 5 and the second linear module 6 fits the cutting trajectory, and complex continuous graphic cutting with an infinite laser field of view can be achieved.

[0025] As Figures 1 to 4 As shown, in this embodiment, the laser cutting module further includes a laser focusing field lens 18, which is disposed at the light exit of the laser galvanometer 4. The laser focusing field lens 18 is disposed at the light exit of the laser galvanometer 4. The laser focusing field lens 18 can move in the XZ direction, and then in cooperation with the third linear module 7, laser cutting processing of any graphic within the XY axis movement range can be achieved.

[0026] As Figures 1 to 4As shown, in this embodiment, the workpiece platform 8 is an adsorption platform, which is connected to an external vacuum source. Three groups of positioning blocks 19 are arranged on the upper surface of the adsorption platform. The three groups of positioning blocks 19 are respectively arranged on three sides of the upper surface of the adsorption platform, and the other side serves as the loading place for the workpiece. The number of the workpiece platforms 8 is two groups, and the two groups of workpiece platforms 8 are arranged side by side left and right. The double-platform ping-pong mechanism can realize the synchronous progress of manual loading and unloading and laser cutting, improve the equipment efficiency, and the two groups of workpiece platforms 8 alternately cycle for loading and unloading and laser cutting.

Claims

1. A laser cutting machine, comprising a mounting frame (1), wherein the length of the mounting frame (1) is the X-axis direction, the width of the mounting frame (1) is the Y-axis direction, and the height of the mounting frame (1) is the Z-axis direction, characterized in that: A laser cutting module is arranged on the mounting frame (1), the laser cutting module comprises a laser (3) and a laser galvanometer (4), the laser (3) and the laser galvanometer (4) are refracted and matched, a first linear module (5) driven along the X-axis direction is arranged on the side of the mounting frame (1), a second linear module (6) driven along the Z-axis direction is arranged at the action end of the first linear module (5), the laser galvanometer (4) is arranged at the action end of the second linear module (6), a plurality of third linear modules (7) driven along the Y-axis direction are arranged below the mounting frame (1), the plurality of third linear modules (7) are arranged in parallel, and a workpiece platform (8) is arranged at the action end of the third linear module (7).

2. A laser cutting machine according to claim 1, characterized in that: The laser cutting module further comprises a first horizontal reflector (9), a second horizontal reflector (10), a first vertical reflector (11) and a second vertical reflector (12); the first horizontal reflector (9) and the second horizontal reflector (10) are both arranged on the mounting frame (1); a first mounting plate (13) is arranged at the action end of the first linear module (5); the second linear module (6) and the first vertical reflector (11) are both arranged on the first mounting plate (13); the laser (3), the first horizontal reflector (9), the second horizontal reflector (10) are both arranged on the first mounting plate (13); 10), the first vertical reflector (11) is in the same horizontal plane, the second vertical reflector (12) is arranged below the first vertical reflector (11), the laser galvanometer (4) and the second vertical reflector (12) are in the same horizontal plane, the laser emitted by the laser (3) is reflected by the first horizontal reflector (9), the second horizontal reflector (10), the first vertical reflector (11) and the second vertical reflector (12) in sequence and is emitted into the laser galvanometer (4), and the laser galvanometer (4) irradiates the laser beam onto the workpiece platform (8).

3. A laser cutting machine according to claim 2, characterized in that: The included angle between the axis of the laser (3) and the first horizontal reflector (9) is 45°, the included angle between the axis of the first horizontal reflector (9) and the second horizontal reflector (10) is 90°, the plane where the second horizontal reflector (10) is located intersects with the plane where the first vertical reflector (11) is located, the included angle between the two planes is 45°, and the included angle between the axis of the first vertical reflector (11) and the second vertical reflector (12) is 90°.

4. A laser cutting machine according to claim 2, characterized in that: The laser cutting module further comprises a laser beam expander (14), wherein the laser beam expander (14) is arranged between the first horizontal reflector (9) and the second horizontal reflector (10), and the laser beam passes through the first horizontal reflector (9), the laser beam expander (14), and the second horizontal reflector (10) in sequence.

5. The laser cutting machine according to claim 1, characterized in that: The action end of the second linear module (6) is provided with a second mounting plate (15), the laser galvanometer (4) is arranged downwardly on the second mounting plate (15), a dust removal sheet metal (16) is arranged below the laser galvanometer (4), and the laser galvanometer (4) irradiates a laser beam through the dust removal sheet metal (16) to the workpiece platform (8).

6. A laser cutting machine according to claim 5, characterized in that: The laser cutting module further comprises a positioning camera (17), wherein the positioning camera (17) is arranged on a side of the second mounting plate (15).

7. The laser cutting machine according to claim 1, characterized in that: The laser cutting module further comprises a laser focusing field lens (18), wherein the laser focusing field lens (18) is arranged at the light outlet of the laser galvanometer (4).

8. The laser cutting machine according to claim 1, characterized in that: The workpiece platform (8) is an adsorption platform, which is connected to an external vacuum source. Three groups of positioning blocks (19) are arranged on the upper surface of the adsorption platform. The three groups of positioning blocks (19) are respectively arranged on three sides of the upper surface of the adsorption platform, and the other side is used as a loading point for the workpiece.

Images