Automatic focusing equipment for laser cutting

Abstract

The utility model discloses a laser cutting automatic focusing device which comprises a laser cutting machine and a laser cutting head located above the laser cutting machine, a movable frame is arranged on the top of the laser cutting machine, a movable box is arranged on one side of the movable frame, the laser cutting head is fixedly installed on the top of an inner cavity of the movable box, and the laser cutting head is fixedly installed on the top of the inner cavity of the movable box. Buffer frames are fixedly connected to the front portion and the rear portion of the moving box. The laser cutting device relates to the technical field of laser cutting. According to the automatic focusing equipment for laser cutting, a protective ring is arranged below a laser cutting head, so that the laser cutting head can be well protected, the protective ring moves upwards through a buffer rod when being collided through the acting force of a spring, the collision force borne by the protective ring can be buffered, and the laser cutting head is prevented from being damaged. The laser cutting head can be effectively prevented from being damaged due to collision, the protection effect of the laser cutting head is improved, and normal use of the laser cutting head is well guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting, in particular to a laser cutting automatic focusing device. Background Art

[0002] Laser cutting technology is widely used in the processing of sheet metal, which can greatly reduce processing time and reduce processing costs. In addition, due to the high precision of laser cutting technology and the smooth and burr-free cutting surface, it has become one of the main sheet metal cutting methods and is being used more and more widely.

[0003] When a laser cutting machine is cutting a plate, the accurate vertical distance between the laser cutting head and the plate is a prerequisite for precision processing. Therefore, it is necessary to continuously adjust the vertical distance between the laser cutting head and the plate, that is, to continuously adjust the position of the focus.

[0004] However, during the use of the laser cutting machine, there are no protective measures around the cutting head of the laser cutting machine. When the workpiece to be processed is placed, the cutting head is easily bumped and damaged, affecting the normal use of the laser cutting machine. In addition, the focus position of the laser cutting machine is usually manually adjusted by the focus of the laser cutting head height position. The manual adjustment method of the laser cutting head height position is relatively cumbersome, resulting in low focusing efficiency of the laser cutting machine. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a laser cutting autofocus device, which solves the problems that there are no protective measures around the cutting head of the laser cutting machine, which easily causes the cutting head to be damaged by collisions, and the manual adjustment method of the laser cutting head height position is relatively cumbersome.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a laser cutting autofocus device, comprising a laser cutting machine and a laser cutting head located above the laser cutting machine, a movable frame is provided on the top of the laser cutting machine, a movable box is provided on one side of the movable frame, the laser cutting head is fixedly installed on the top of the inner cavity of the movable box, the front and rear of the movable box are fixedly connected to a buffer frame, the interior of the buffer frame is slidably connected to a buffer rod, one end of the two buffer rods is fixedly connected to a protective ring, and a spring is fixedly connected between the top of the inner cavity of the buffer frame and the other end of the buffer rod.

[0007] Preferably, a movable plate is provided on the top of the movable frame, an adjustment box is fixedly connected to the top of the movable plate, and a motor is fixedly connected to the top of the movable plate and inside the adjustment box.

[0008] Preferably, the output shaft of the motor is fixedly connected to a threaded rod through a coupling, the top end of the threaded rod is rotatably connected to the top of the inner cavity of the adjustment box through a bearing, and the outer surface of the threaded rod is threadedly connected to a threaded sleeve.

[0009] Preferably, a sliding groove is provided on one side of the inner cavity of the adjustment box, the interior of the sliding groove is slidably connected to a sliding plate via a slider, and one side of the sliding plate is fixedly connected to the outer surface of the threaded sleeve.

[0010] Preferably, a connecting plate is fixedly connected to one side of the outer surface of the threaded sleeve, one side of the connecting plate passes through the adjustment box and extends to the outside of the adjustment box, and one side of the connecting plate is fixedly connected to one side of the moving box.

[0011] Preferably, a strip-shaped notch adapted to the connecting plate is provided on one side of the adjustment box.

[0012] Beneficial effects

[0013] The utility model provides a laser cutting autofocus device. Compared with the existing technology, it has the following advantages:

[0014] (1) The utility model sets a protective ring under the laser cutting head, so that the laser cutting head can be well protected. Through the action of the spring, the protective ring will move upward through the buffer rod when it is hit, which can buffer the collision force on the protective ring and effectively prevent the laser cutting head from being damaged by collision, thereby improving the protective effect of the laser cutting head and ensuring the normal use of the laser cutting head.

[0015] (2) The utility model drives the threaded rod to rotate through a motor, and the threaded rod drives the connecting plate to move through a threaded sleeve. The connecting plate drives the laser cutting head to move through a moving box. There is no need to manually adjust the height of the laser cutting head. The vertical distance of the laser cutting head can be easily adjusted, thereby realizing the function of automatic focus, which greatly improves the accuracy and efficiency of cutting processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the laser cutting head, moving box and buffer frame of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the laser cutting head, moving box and adjustment box of the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the movable plate, adjustment box, motor, threaded rod, slide groove and connecting plate of the utility model.

[0020] In the figure: 1. Laser cutting machine; 2. Laser cutting head; 3. Moving frame; 4. Moving box; 5. Buffer frame; 6. Buffer rod; 7. Protective ring; 8. Spring; 9. Moving plate; 10. Adjustment box; 11. Motor; 12. Threaded rod; 13. Threaded sleeve; 14. Slide groove; 15. Sliding plate; 16. Strip notch; 17. Connecting plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] See also Figure 1-4 The utility model provides a technical solution: a laser cutting autofocus device, comprising a laser cutting machine 1 and a laser cutting head 2 located above the laser cutting machine 1, a mobile frame 3 is provided on the top of the laser cutting machine 1, a mobile box 4 is provided on one side of the mobile frame 3, the laser cutting head 2 is fixedly installed on the top of the inner cavity of the mobile box 4, the front and rear of the mobile box 4 are fixedly connected to the buffer frame 5, the interior of the buffer frame 5 is slidably connected to the buffer rod 6, one end of the two buffer rods 6 is fixedly connected to a protective ring 7, the protective ring 7 is made of rubber, and a spring 8 is fixedly connected between the top of the inner cavity of the buffer frame 5 and the other end of the buffer rod 6.

[0023] Furthermore, in order to facilitate the automatic focusing of the height adjustment of the laser cutting head 2, a movable plate 9 is provided on the top of the movable frame 3, and the top of the movable plate 9 is fixedly connected to the adjustment box 10. The top of the movable plate 9 and the interior of the adjustment box 10 are fixedly connected to a motor 11. The motor 11 is a servo motor, electrically connected to an external power supply, and controlled by a control switch. The output shaft of the motor 11 is fixedly connected to a threaded rod 12 through a coupling, and the top of the threaded rod 12 is rotatably connected to the top of the inner cavity of the adjustment box 10 through a bearing. The outer surface of the threaded rod 12 is threadedly connected to a threaded sleeve 13, and a slide groove 14 is provided on one side of the inner cavity of the adjustment box 10. The interior of the slide groove 14 is slidably connected to a sliding plate 15 through a slider, and one side of the sliding plate 15 is fixedly connected to the outer surface of the threaded sleeve 13.

[0024] Furthermore, in order to facilitate the up and down movement of the laser cutting head 2, a connecting plate 17 is fixedly connected to one side of the outer surface of the threaded sleeve 13. One side of the connecting plate 17 passes through the adjustment box 10 and extends to the outside of the adjustment box 10. One side of the connecting plate 17 is fixedly connected to one side of the movable box 4. A strip groove 16 adapted to the connecting plate 17 is opened on one side of the adjustment box 10.

[0025] When in use, the threaded rod 12 is driven to rotate by controlling the motor 11, and the sliding plate 15 is slidably limited by the slider in the slide groove 14, and the sliding plate 15 is slidably limited to the threaded sleeve 13. The threaded rod 12 will drive the threaded sleeve 13 to move downward, and the threaded sleeve 13 will drive the moving box 4 to move downward through the connecting plate 17. The moving box 4 will drive the laser cutting head 2 to move downward for automatic focusing, and the threaded rod 12 is driven to rotate in the opposite direction by the motor 11, thereby driving the laser cutting head 2 to move upward for focusing;

[0026] The laser cutting head 2 is protected by the protective ring 7. When the protective ring 7 is hit, the two buffer rods 6 on the protective ring 7 will be squeezed. The two buffer rods 6 will squeeze the spring 8 to move upward for buffering. The force of the spring 8 will drive the protective ring 7 to move and reset through the two buffer rods 6.

Claims

1. A laser cutting autofocus device, comprising a laser cutting machine (1) and a laser cutting head (2) located above the laser cutting machine (1), characterized in that: A movable frame (3) is arranged on the top of the laser cutting machine (1), a movable box (4) is arranged on one side of the movable frame (3), the laser cutting head (2) is fixedly mounted on the top of the inner cavity of the movable box (4), the front and rear of the movable box (4) are fixedly connected with a buffer frame (5), the interior of the buffer frame (5) is slidably connected with a buffer rod (6), one end of each of the two buffer rods (6) is fixedly connected with a protective ring (7), and a spring (8) is fixedly connected between the top of the inner cavity of the buffer frame (5) and the other end of the buffer rod (6).

2. The laser cutting autofocus device according to claim 1, characterized in that: A moving plate (9) is arranged on the top of the moving frame (3), an adjustment box (10) is fixedly connected to the top of the moving plate (9), and a motor (11) is fixedly connected to the top of the moving plate (9) and inside the adjustment box (10).

3. The laser cutting autofocus device according to claim 2, characterized in that: The output shaft of the motor (11) is fixedly connected to a threaded rod (12) via a coupling, the top end of the threaded rod (12) is rotatably connected to the top of the inner cavity of the adjustment box (10) via a bearing, and the outer surface of the threaded rod (12) is threadedly connected to a threaded sleeve (13).

4. The laser cutting autofocus device according to claim 3, characterized in that: A slide groove (14) is provided on one side of the inner cavity of the adjustment box (10), and a slide plate (15) is slidably connected to the interior of the slide groove (14) via a slider, and one side of the slide plate (15) is fixedly connected to the outer surface of the threaded sleeve (13).

5. The laser cutting autofocus device according to claim 3, characterized in that: A connecting plate (17) is fixedly connected to one side of the outer surface of the threaded sleeve (13), one side of the connecting plate (17) passes through the adjustment box (10) and extends to the outside of the adjustment box (10), and one side of the connecting plate (17) is fixedly connected to one side of the moving box (4).

6. The laser cutting autofocus device according to claim 5, characterized in that: A strip-shaped notch (16) adapted to the connecting plate (17) is provided on one side of the adjustment box (10).

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