Laser cutting robot

Abstract

The utility model discloses a laser cutting robot, and belongs to the field of cutting equipment. The device comprises a manipulator, a horizontal displacement mechanism and a cutting head, the horizontal displacement mechanism comprises an L-shaped mounting seat and a connecting seat; the L-shaped mounting seat is fixedly mounted at the end part of the manipulator, and two inner side surfaces of the L-shaped mounting seat are provided with telescopic mechanisms of which the telescopic directions are vertical to the inner side surfaces; a sliding block is installed at the end of the telescopic mechanism, a sliding rail extending in the horizontal direction is installed on the end face, opposite to the inner side face of the L-shaped installation base, of the connecting base, and the sliding block is installed on the sliding rail in a sliding mode. And the cutting head is mounted on the connecting seat. A displacement mechanism of the cutting head is improved, small-range and high-precision horizontal displacement of the cutting head can be achieved, and cutting efficiency and cutting precision are improved.

Description

Technical Field

[0001] The utility model belongs to the field of cutting equipment, and more specifically, relates to a laser cutting robot. Background Art

[0002] As a new type of thermal cutting technology, laser cutting has the advantages of fast cutting speed, high production efficiency, good cutting end face quality, small heat affected zone and environmental protection. It has become one of the main cutting methods for metal sheets and has been more and more widely used.

[0003] When a laser cutting machine cuts a workpiece, it needs to move the cutting head to change its position. Existing laser cutting machines generally use a manipulator or a large horizontal displacement device in cooperation with a lifting device to move the cutting head. However, during the cutting process of workpieces with complex shapes, the cutting head needs to frequently displace in the horizontal direction. When using a manipulator or a large horizontal displacement device to displace the cutting head horizontally, on the one hand, the movement is large and troublesome, and on the other hand, the displacement accuracy is not high.

[0004] For example, the patent document with the Chinese patent application number: CN201820813451.0 and the publication date: December 25, 2018 discloses a robot laser cutting machine, including a laser head, a laser generator, a robot, a base, a workpiece table, a rotation motor and a power control circuit; the laser head is fixed on the execution end of the robot and is optically connected to the laser generator, the power control circuit is electrically connected to the laser generator and adjusts the output power of the laser generator; the base is arranged below the laser head, the workpiece table is rotatably connected to the base, multiple workpiece positions are arranged on the workpiece table, the rotation motor is arranged on the base, and the output shaft of the rotation motor is in transmission connection with the workpiece table and drives the workpiece table to rotate, so that multiple workpiece positions rotate to the directly below the laser head in turn. This solution uses a manipulator to adjust the position of the cutting head, and there are the problems of large movement and low displacement accuracy mentioned above.

[0005] Another example is the patent document with the Chinese patent application number: CN202320434360.7 and the publication date: September 8, 2023, which discloses a planar laser cutting machine, including a machine tool and an XYZ moving platform installed on the machine tool. The Y-axis bracket of the XYZ moving platform is fixedly connected with a sealed outer frame, an expansion seat is slidably connected inside the sealed outer frame, a moving component is jointly installed between the expansion seat and the sealed outer frame, and the top of the expansion seat is rotatably connected with a plurality of placing components, and the placing components penetrate through the top of the expansion seat and extend to the inside. This solution uses a large horizontal displacement device to adjust the position of the cutting head, and there are also the problems of large movement and low displacement accuracy mentioned above. Summary of the Invention

[0006] 1. Problem to be Solved

[0007] In view of the problems that when the existing laser cutting machine moves the cutting head in the horizontal direction, there is a large movement, the displacement accuracy is not high, and it is not suitable for cutting workpieces of products with complex structures, the present utility model provides a laser cutting robot, which improves the displacement mechanism of the cutting head and can realize the horizontal displacement of the cutting head with a small range and high precision, improving the cutting efficiency and cutting accuracy.

[0008] 2. Technical Solution

[0009] To solve the above problems, the present utility model adopts the following technical solutions.

[0010] A laser cutting robot includes a manipulator, a horizontal displacement mechanism and a cutting head; the horizontal displacement mechanism includes an L-shaped mounting seat and a connecting seat; the L-shaped mounting seat is fixedly installed at the end of the manipulator, and telescopic mechanisms with telescopic directions perpendicular to the inner side surfaces are installed on its two inner side surfaces; a slider is installed at the end of the telescopic mechanism, and a slide rail extending in the horizontal direction is installed on the end surface of the connecting seat opposite to the inner side surface of the L-shaped mounting seat, and the slider is slidably installed on the slide rail; the cutting head is installed on the connecting seat.

[0011] As a further improvement of the technical solution, the telescopic mechanism includes a motor and a lead screw-nut mechanism, the motor is drivingly connected to the lead screw of the lead screw-nut mechanism, and the nut of the lead screw-nut mechanism is fixedly connected to the slider.

[0012] As a further improvement of the technical solution, the motor is installed on the side of the lead screw-nut mechanism, and its output shaft is drivingly connected to the lead screw of the lead screw-nut mechanism through a belt or a chain.

[0013] As a further improvement of the technical solution, it further includes a lifting device; the lifting device is installed on the connecting seat to control the lifting of the cutting head.

[0014] As a further improvement of the technical solution, a microswitch mounting plate is installed on one side of the lifting device, and a microswitch is installed at the upper end and the lower end of the microswitch mounting plate respectively; a trigger block matching the microswitch is installed on the cutting head at a position corresponding to the microswitch mounting plate.

[0015] As a further improvement of the technical solution, a nitrogen protection device is installed on the cutting head.

[0016] As a further improvement of the technical solution, a purging device is installed on the cutting head.

[0017] As a further improvement of the technical solution, a stop block is installed at the end of the slide rail.

[0018] As a further improvement of the technical solution, a main switch is installed on the manipulator.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] (1) The utility model discloses a laser cutting robot. On the basis of the manipulator displacing the cutting head, a horizontal displacement mechanism capable of displacing the cutting head in a small range and with high precision is installed at the end of the manipulator. The two telescopic mechanisms with mutually perpendicular telescopic directions cooperate with each other, so that the cutting head can be quickly adjusted according to the cutting route, thus avoiding the problem of large movement and low displacement precision when the cutting head is horizontally displaced by a manipulator or a large horizontal displacement device, thereby improving the cutting efficiency and cutting precision.

[0022] (2) The utility model provides a laser cutting robot, in which the motor is installed on the side of the screw nut mechanism and connected to the horizontal transmission by a belt or chain, which can reduce the length of the horizontal displacement mechanism and simplify the installation space;

[0023] (3) The utility model provides a laser cutting robot, which, by setting a micro switch, stops lifting when the cutting head rises or falls beyond a certain distance, thereby controlling the lifting of the cutting head to avoid excessive lifting affecting the cutting work;

[0024] (4) The utility model provides a laser cutting robot, which can blow away the debris generated on the surface of the workpiece during the cutting process by providing a purge device, thereby ensuring the cutting effect;

[0025] (5) The utility model provides a laser cutting robot, in which a stopper is installed at the end of a slide rail, which can prevent the slider from separating from the slide rail and ensure the normal operation of the horizontal displacement mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the laser cutting robot of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the non-manipulator part of the utility model;

[0028] Figure 3 It is a schematic diagram of the internal structure of the horizontal displacement mechanism of the utility model;

[0029] In the figure: 1. Robot; 2. Cutting head; 3. L-shaped mounting seat; 4. Connecting seat; 5. Telescopic mechanism; 6. Slider; 7. Slide rail; 8. Motor; 9. Screw-nut mechanism; 10. Lifting device; 11. Micro switch mounting plate; 12. Micro switch; 13. Trigger block; 14. Nitrogen protection device; 15. Main switch. DETAILED DESCRIPTION

[0030] Exemplary embodiments of the present invention are described in detail below. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from the spirit and scope of the present invention. The more detailed description of the embodiments of the present invention below is not intended to limit the scope of the claimed present invention, but is merely for illustration and does not limit the description of the features and characteristics of the present invention, in order to propose the best way to perform the present invention, and is sufficient to enable those skilled in the art to implement the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

[0031] Example 1

[0032] A laser cutting robot is used to automatically cut workpieces. It can adjust the cutting head horizontally in a small range and with high precision to improve cutting efficiency and cutting accuracy. Its specific structure and technical effects are described in detail below.

[0033] like Figure 1 and Figure 2 As shown, the robot includes a manipulator 1, a horizontal displacement mechanism and a cutting head 2. The horizontal displacement mechanism includes an L-shaped mounting seat 3 and a connecting seat 4. The L-shaped mounting seat 3 is fixedly mounted at the end of the manipulator 1, and a telescopic mechanism 5 whose telescopic direction is perpendicular to the inner side surface is mounted on its two inner side surfaces. A slider 6 is mounted at the end of the telescopic mechanism 5, and a slide rail 7 extending in the horizontal direction is mounted on the end surface of the connecting seat 4 opposite to the inner side surface of the L-shaped mounting seat 3. The slider 6 is slidably mounted on the slide rail 7, and the cutting head 2 is mounted on the connecting seat 4. In this embodiment, a block is mounted at the end of the slide rail 7 to prevent the slider 6 from detaching from the slide rail 7, thereby ensuring the normal operation of the horizontal displacement mechanism. A main switch 15 is mounted on the manipulator 1 to control the power supply of the entire device.

[0034] Specifically, Figure 3 As shown, the telescopic mechanism 5 includes a motor 8 and a screw nut mechanism 9, the motor 8 drives the screw connected to the screw nut mechanism 9, the nut of the screw nut mechanism 9 is fixedly connected to the slider 6, and drives the slider 6 to push the connecting seat 4, so that the connecting seat 4 slides relative to the other slider 6 to adjust the position of the cutting head 2. In this embodiment, in order to reduce the length of the horizontal displacement mechanism and simplify the installation space, the motor 8 is installed on the side of the screw nut mechanism 9, and its output shaft is connected to the screw of the screw nut mechanism 9 through a belt or chain transmission.

[0035] Based on the displacement of the cutting head 2 by the manipulator 1 in this embodiment, a horizontal displacement mechanism capable of performing small-range and high-precision displacement of the cutting head 2 is installed at the end of the manipulator 1. Two telescopic mechanisms 5 with mutually perpendicular telescopic directions cooperate to work, enabling the cutting head 2 to quickly make adjustments according to the cutting route, avoiding the problems of large movements and low displacement accuracy when using a manipulator or a large horizontal displacement device to perform horizontal displacement of the cutting head, and improving the cutting efficiency and cutting accuracy.

[0036] In the height direction, in this embodiment, a lifting device 10 for controlling the lifting of the cutting head 2 is installed on the connecting seat 4. The lifting device 10 can use common lifting equipment on the market, and its specific structure and working principle belong to the prior art known to those skilled in the art and will not be described in detail here.

[0037] One side of the lifting device 10 is provided with a microswitch mounting plate 11. A microswitch 12 is installed at the upper and lower ends of the microswitch mounting plate 11 respectively. A trigger block 13 matching the microswitch 12 is installed on the cutting head 2 at a position corresponding to the microswitch mounting plate 11. By setting the microswitch 12, when the cutting head 2 rises or falls beyond a certain distance, the lifting will stop, thereby controlling the lifting of the cutting head 2 and avoiding the influence of excessive lifting on the cutting work.

[0038] At the same time, a nitrogen protection device 14 and a purging device are also installed on the cutting head 2. The nitrogen protection device 14 can protect the workpiece during the cutting process to prevent the workpiece from oxidizing, while the purging device can blow away the debris generated on the surface of the workpiece during the cutting process to ensure the cutting effect. In some cases, nitrogen can be ejected through the purging device to achieve purging work directly with nitrogen while protecting the workpiece.

[0039] In summary, for a laser cutting robot in this embodiment, the displacement mechanism of the cutting head is improved, enabling small-range and high-precision horizontal displacement of the cutting head, and improving the cutting efficiency and cutting accuracy.

Claims

1. A laser cutting robot, characterized in that: The invention comprises a manipulator (1), a horizontal displacement mechanism and a cutting head (2); the horizontal displacement mechanism comprises an L-shaped mounting seat (3) and a connecting seat (4); the L-shaped mounting seat (3) is fixedly mounted at the end of the manipulator (1), and its two inner side surfaces are provided with telescopic mechanisms (5) whose telescopic directions are perpendicular to the inner side surfaces; a sliding block (6) is mounted at the end of the telescopic mechanism (5); the end surface of the connecting seat (4) opposite to the inner side surface of the L-shaped mounting seat (3) is provided with a sliding rail (7) extending in the horizontal direction, and the sliding block (6) is slidably mounted on the sliding rail (7); the cutting head (2) is mounted on the connecting seat (4).

2. A laser cutting robot according to claim 1, characterized in that: The telescopic mechanism (5) comprises a motor (8) and a screw-nut mechanism (9); the motor (8) drives a screw connected to the screw-nut mechanism (9); and the nut of the screw-nut mechanism (9) is fixedly connected to the slider (6).

3. A laser cutting robot according to claim 2, characterized in that: The motor (8) is installed on the side of the screw nut mechanism (9), and its output shaft is connected to the screw of the screw nut mechanism (9) through a belt or chain transmission.

4. A laser cutting robot according to claim 1, characterized in that: It also comprises a lifting device (10); the lifting device (10) is installed on the connecting seat (4) and controls the cutting head (2) to move up and down.

5. A laser cutting robot according to claim 4, characterized in that: A micro switch mounting plate (11) is mounted on one side of the lifting device (10), and a micro switch (12) is mounted on the upper and lower ends of the micro switch mounting plate (11) respectively; a trigger block (13) matching the micro switch (12) is mounted on the cutting head (2) at a position corresponding to the micro switch mounting plate (11).

6. A laser cutting robot according to any one of claims 1 to 5, characterized in that: The cutting head (2) is provided with a nitrogen protection device (14).

7. A laser cutting robot according to any one of claims 1 to 5, characterized in that: The cutting head (2) is equipped with a purge device.

8. A laser cutting robot according to any one of claims 1 to 5, characterized in that: A stopper is provided at the end of the slide rail (7).

9. A laser cutting robot according to any one of claims 1 to 5, characterized in that: The manipulator (1) is provided with a main switch (15).

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