Laser cutting head and laser cutting device equipped with same

Abstract

The utility model relates to the technical field of laser, in particular to a laser cutting head and a laser cutting device provided with the laser cutting head. In order to improve the cutting debugging efficiency and the adjusting precision of a three-dimensional laser cutting device, the utility model provides a laser cutting head which comprises a light beam transmission cylinder, a focus lens and an adjusting mechanism, an adjusting groove hole is formed in the cylinder wall of the light beam transmission cylinder, and the focus lens is arranged in the adjusting groove hole. The focus lens is fixed in the focus lens base and installed in the light beam transmission cylinder, and the adjusting mechanism is located outside the light beam transmission cylinder and connected with the focus lens base through a connecting piece arranged in the adjusting groove hole in a penetrating mode. The adjusting mechanism can drive the focus lens base to move in the direction of the central axis of the focus lens through the connecting piece. The laser cutting head is high in debugging efficiency and high in adjusting precision.

Description

Technical Field

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

[0002] Before using a three-dimensional laser cutting device for cutting, the focus of the laser beam used for cutting needs to be adjusted.

[0003] Currently, the laser cutting head in 3D laser cutting devices on the market requires manual adjustment of the laser beam focus. The adjustment speed is slow and the adjustment accuracy is low, which leads to low debugging efficiency and is time-consuming and labor-intensive when the 3D laser cutting device is being tested.

[0004] Practical content

[0005] To improve the cutting and adjustment efficiency and accuracy of a three-dimensional laser cutting device, this invention proposes a laser cutting head. The laser cutting head includes a beam transmission tube, a focusing lens, and an adjustment mechanism. The beam transmission tube has an adjustment slot on its wall. The focusing lens is fixed in a focusing lens holder and installed within the beam transmission tube. The adjustment mechanism is located outside the beam transmission tube and connected to the focusing lens holder via a connector passing through the adjustment slot. The adjustment mechanism can drive the focusing lens holder to move along the central axis of the focusing lens via the connector. In this invention, the focusing lens in the laser cutting head is connected to the adjustment mechanism via the connector. During use, the position of the focusing lens can be adjusted by moving the focusing lens holder within the beam transmission tube using the adjustment mechanism, thereby adjusting the focal point of the laser cutting head. Compared to manual adjustment, this significantly improves adjustment efficiency and accuracy.

[0006] Preferably, the adjustment mechanism includes a driving component and a transmission rod. The driving end of the driving component is connected to the transmission rod, and the transmission rod is connected to the connecting component and moves along the central axis of the focusing lens under the drive of the driving component. This adjustment mechanism, consisting of a driving component and a transmission rod, has a simple structure and facilitates the adjustment mechanism to move the focusing lens mount, on which the focusing lens is mounted, along the central axis of the focusing lens in the beam transmission tube via the connecting component. Adjustment control is simple and convenient. Further, the connecting component is threadedly connected to the transmission rod. Thus, when adjusting the position of the focusing lens in the beam transmission tube via the connecting component, the adjustment mechanism only needs to drive the transmission rod to rotate using the driving component to achieve stepless adjustment of the focusing lens position. The adjustment operation is simple and convenient, and the adjustment accuracy is high. More preferably, the transmission rod is mounted on a first support base and a second support base, located at both ends of the adjustment slot, with the first support base located between the adjustment slot and the driving component. This utilizes the first and second support bases to support the transmission rod, preventing displacement or even bending damage during transmission, which would affect the adjustment accuracy.

[0007] Preferably, slide rails parallel to the transmission rod are provided on both sides of the adjustment slot, and the two sides of the connector are connected to sliders locked on the slide rails. Thus, by providing slide rails parallel to the transmission rod on both sides of the adjustment slot, the sliders locked on the slide rails can hold the connector, eliminating the force exerted on the transmission rod by gravity on the connector, focusing lens, and focusing lens mount, preventing deformation of the transmission rod during transmission, and extending the service life of the laser cutting head of this invention. Furthermore, it can guide the movement direction of the connector, preventing directional deviation during movement and improving the adjustment accuracy of the focusing lens.

[0008] Preferably, the focusing lens mount includes a sleeve, a base, and a focusing pressure ring. The sleeve has a lifting lug connected to the connecting member. A focusing positioning ring is provided on the inner wall of the base, and the focusing pressure ring is inserted into the base and forms a focusing positioning ring groove for mounting the focusing lens. This focusing lens mount has a simple structure, and the base and focusing lens can be replaced according to focusing needs, making it widely applicable. Furthermore, a focusing buffer ring is provided in the focusing positioning ring groove, and this focusing buffer ring is sandwiched between the focusing lens and the focusing positioning ring. Thus, providing a focusing buffer ring in the focusing positioning ring groove can prevent direct contact between the focusing lens and the focusing positioning ring, thus avoiding damage to the focusing lens.

[0009] Preferably, a support plate for mounting the adjustment mechanism is provided on the outer wall of the beam transmission tube. This allows for the selection of a support plate of appropriate specifications based on the dimensions and structure of the adjustment mechanism, facilitating its installation and fixation on the outside of the beam transmission tube. Furthermore, a protective cover is provided on the support plate, enclosing the adjustment mechanism. This protective cover on the support plate not only protects the adjustment mechanism but also prevents it from being exposed and causing injury to the operator during use, thus improving the safety of the laser cutting head of this invention.

[0010] Furthermore, this utility model also proposes a laser cutting device, which is equipped with any of the aforementioned laser cutting heads. Thus, equipping the laser cutting device with the aforementioned laser cutting head can effectively improve the debugging efficiency and adjustment accuracy of the laser cutting device. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the laser cutting head of this utility model;

[0012] Figure 2 for Figure 1 A schematic diagram of the AA cross-sectional structure in the diagram;

[0013] Figure 3 This is a schematic diagram of the structure of the laser cutting head of this utility model when the protective cover is removed;

[0014] Figure 4 for Figure 3 A schematic diagram of the BB cross-sectional structure. Detailed Implementation

[0015] Below, in conjunction with Figures 1 to 4 This invention provides a detailed description of the laser cutting device, particularly the laser cutting head thereof.

[0016] like Figures 1 to 4As shown, the laser cutting head of this invention includes a beam transmission tube 1, a focusing lens 2, and an adjustment mechanism 3. The beam transmission tube 1 has an adjustment slot 11 on its wall. The focusing lens 2 is fixed in a focusing lens mount 4 and installed within the beam transmission tube 1. The adjustment mechanism 3 is located outside the beam transmission tube 1 and connected to the focusing lens mount 4 via a connector 5 passing through the adjustment slot 11. The adjustment mechanism 3 can drive the focusing lens mount 4 to move along the central axis of the focusing lens 2 within the beam transmission tube 1 via the connector 5. In this laser cutting head, the focusing lens 2 is connected to the adjustment mechanism 3 via the connector 5. During use, the position of the focusing lens 2 can be adjusted by using the adjustment mechanism 3 to move the focusing lens mount 4 within the beam transmission tube 1 as needed, thereby adjusting the focal point of the laser cutting head. Compared to manual adjustment, this significantly improves adjustment efficiency and accuracy. Preferably, a support plate 61 for mounting the adjustment mechanism 3 is provided on the outer wall of the beam transmission tube 1. Thus, a support plate 61 is provided on the outer wall of the beam transmission tube 1 to mount the adjustment mechanism 3. The support plate 61 of appropriate specifications can be selected according to the specifications and structure of the adjustment mechanism 3, facilitating the installation and fixation of the adjustment mechanism 3 on the outside of the beam transmission tube 1. Preferably, a protective cover 62 is provided on the support plate 61, and this protective cover 62 covers the adjustment mechanism 3. In this way, the protective cover on the support plate 61 protects the adjustment mechanism 3 and prevents it from being exposed and causing injury to the operator during use, thereby improving the safety of the laser cutting head of this invention.

[0017] like Figures 2 to 4As shown, the adjustment mechanism 3 includes a driving component 31 and a transmission rod 32. The driving end of the driving component 31 is connected to the transmission rod 32, and the transmission rod 32 is connected to the connecting member 5 and moves along the central axis of the focusing lens under the drive of the driving component 31. This adjustment mechanism 3, consisting of the driving component 31 and the transmission rod 32, has a simple structure and facilitates the movement of the focusing lens mount 4 (on which the focusing lens 2 is mounted) in the beam transmission tube 1 along the central axis of the focusing lens via the connecting member 5. Adjustment control is simple and convenient. Preferably, the connecting member 5 is threadedly connected to the transmission rod 32. Thus, when adjusting the position of the focusing lens 2 in the beam transmission tube 1 via the connecting member 5, the adjustment mechanism 3 only needs to drive the transmission rod 32 to rotate using the driving component 31 to achieve stepless adjustment of the focusing lens 2's position. The adjustment operation is simple and convenient, and the adjustment accuracy is high. Preferably, the transmission rod 32 is mounted on a first support 33 and a second support 34, with the first support 33 and the second support 34 located at both ends of the adjustment slot 11, and the first support 33 positioned between the adjustment slot 11 and the driving member 31. This utilizes the first support 33 and the second support 34 to support the transmission rod 32, preventing displacement or even bending damage during transmission and ensuring adjustment accuracy. Preferably, the adjustment mechanism 3 includes a slide rail 35 and a slider 36. The slide rail 35 is positioned on both sides of the adjustment slot 11 and parallel to the transmission rod 32. The slider 36 is engaged with the slide rail 35 and connected to the connecting member 5 via connecting ears 51 located on both sides of the connecting member 5. Thus, by setting slide rails 35 parallel to the transmission rod 32 on both sides of the adjusting slot 11, the slider 36, which is engaged on the slide rail 35, can hold the connecting piece 5, eliminating the force exerted on the transmission rod 32 by the connecting piece 5, focusing lens 2, and focusing lens mount 4 due to gravity. This prevents the transmission rod 32 from deforming during transmission, extending the service life of the laser cutting head of this invention. Furthermore, it can guide the movement direction of the connecting piece 5, preventing directional deviation during movement and improving the adjustment accuracy of the focusing lens. Preferably, a servo motor is used as the drive component 31, making control simple and convenient.

[0018] like Figure 2 and 4As shown, the focusing lens mount 4 includes a sleeve 41, a base 42, and a focusing pressure ring 43. The sleeve 41 is provided with a lifting lug 411, which is connected to the connecting member 5. A focusing positioning ring 421 is provided on the inner wall of the base 42. The focusing pressure ring 43 is inserted into the base 42 and forms a focusing positioning ring groove (not shown in the figure) with the focusing positioning ring 421 for mounting the focusing lens 2. This focusing lens mount 4 has a simple structure and allows for replacement of the base 42 and focusing lens 2 according to focusing needs, making it widely applicable. Preferably, the base 42 and sleeve 41 are threaded together, which facilitates the disassembly and assembly of the base 42 and sleeve 41 and improves the installation stability of the base 42 within the sleeve 41. Preferably, a focusing buffer ring 44 is provided in the focusing positioning ring groove, and this focusing buffer ring 44 is sandwiched between the focusing lens 2 and the focusing positioning ring 421. In this way, by setting the focusing buffer ring 44 in the focusing positioning ring groove, the focusing lens 2 can be prevented from directly contacting the focusing positioning ring 421 and causing damage to the focusing lens 2.

[0019] Equipping the laser cutting head described above into a laser cutting device can effectively improve the debugging efficiency and adjustment accuracy of the laser cutting device.

Claims

1. A laser cutting head, characterized in that, The laser cutting head includes a beam transmission tube, a focusing lens, and an adjustment mechanism. The beam transmission tube has an adjustment slot on its wall. The focusing lens is fixed in a focusing lens mount and installed in the beam transmission tube. The adjustment mechanism is located outside the beam transmission tube and is connected to the focusing lens mount through a connector passing through the adjustment slot. The adjustment mechanism can drive the focusing lens mount to move along the central axis of the focusing lens in the beam transmission tube through the connector.

2. The laser cutting head according to claim 1, characterized in that, The adjustment mechanism includes a driving component and a transmission rod. The driving end of the driving component is connected to the transmission rod, and the transmission rod is connected to the connecting component and moves along the central axis of the focusing lens under the drive of the driving component.

3. The laser cutting head according to claim 2, characterized in that, The connector is threadedly connected to the transmission rod.

4. The laser cutting head according to claim 3, characterized in that, The transmission rod is mounted on a first support and a second support, which are located at the two ends of the adjustment slot, with the first support located between the adjustment slot and the drive member.

5. The laser cutting head according to claim 3, characterized in that, The adjustment slot is provided with slide rails on both sides that are parallel to the transmission rod, and the two sides of the connector are connected to the sliders that are locked on the slide rails.

6. The laser cutting head according to any one of claims 1-5, characterized in that, The focusing lens mount includes a sleeve, a base, and a focusing pressure ring. The sleeve is provided with a lifting lug, which is connected to the connecting member. The inner wall of the base is provided with a focusing positioning ring, and the focusing pressure ring is inserted into the base and forms a focusing positioning ring groove for mounting the focusing lens with the focusing positioning ring.

7. The laser cutting head according to claim 6, characterized in that, A focusing buffer ring is provided in the focusing positioning ring groove, and the focusing buffer ring is sandwiched between the focusing lens and the focusing positioning ring.

8. The laser cutting head according to any one of claims 1-5, characterized in that, The outer wall of the beam transmission tube is provided with a support plate for mounting the adjustment mechanism.

9. The laser cutting head according to claim 8, characterized in that, The support plate is provided with a protective cover, which covers the adjustment mechanism.

10. A laser cutting device, characterized in that, The laser cutting device is equipped with a laser cutting head as described in any one of claims 1-9.

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