A laser cutting head

Abstract

This utility model discloses a laser cutting head, including a bracket, a cutting head, and a mounting base. The cutting head is fixed to the mounting base, and the mounting base is elastically connected to the bracket through an elastic support component. The mounting base is provided with at least one abutment portion, the bottom end of which is lower than the bottom end of the cutting head. This abutment portion is used to abut against the surface of the pipe to be cut during the cutting process to maintain a constant distance between the cutting head and the surface of the pipe to be cut. This utility model has a simple structure and reasonable design. By setting the mounting base, elastic support component, and abutment portion on the bracket, an adaptive height adjustment structure is formed. When the pipe to be cut is processed, the elastic support component drives the mounting base to adaptively displace in the vertical direction, ensuring that the outer edge of the abutment portion continuously abuts against the surface of the pipe to be cut, thereby dynamically maintaining a constant distance between the cutting head and the pipe to be cut and improving the level of automation.

Description

Technical Field

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

[0002] The laser cutting head is the core opto-mechatronics component in laser cutting equipment. It is responsible for receiving the beam generated by the laser, precisely focusing it to form a high-energy-density spot, and controlling the spot to act on the workpiece surface. It also integrates functions such as highly automatic tracking and auxiliary gas injection to achieve efficient and precise material cutting.

[0003] Chinese utility model patent CN222944754U discloses a connecting mechanism for a laser cutting head, including a laser cutting head. A fixed plate is mounted on the upper end of the laser cutting head. A fixed column is mounted at the center of the upper end of the fixed plate. A first connecting end is mounted on the upper end of the fixed plate. Multiple sets of sliding boxes are arranged on the outer side of the first connecting end. Moving blocks are mounted on the inner side of each set of sliding boxes. A first threaded column is mounted on the outer side of each moving block. A first nut is mounted on the outer side of the first threaded column. A helical column is mounted on the upper end of the first connecting end. A rotating cylinder is arranged on the outer side of the helical column. An installation plate is mounted at the center of the outer side of the rotating cylinder. A motor is threaded through the upper end of the installation plate. A gear is mounted on the upper end of the motor. A connecting column is mounted on the upper end of the installation plate. A second connecting end is mounted on the upper end of the connecting column. A toothed block is fixedly connected to the outer side of the rotating cylinder, and the toothed block meshes with the gear.

[0004] The aforementioned laser cutting head connection mechanism relies on manual operation of the motor to adjust the laser cutting head height to accommodate different cutting objects. However, when the height of the cutting object changes dynamically during processing, real-time manual operation of the motor for position adjustment is usually required, necessitating continuous monitoring and intervention by personnel. This manual dependence mechanism restricts the automation of the laser cutting process, making it impossible to meet the process requirements of unattended or high-efficiency mass production. Utility Model Content

[0005] The purpose of this invention is to provide a laser cutting head to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A laser cutting head includes a bracket, a cutting head, and a mounting base. The cutting head is fixed to the mounting base, and the mounting base is elastically connected to the bracket via an elastic support component. The mounting base is provided with at least one abutment portion, the bottom end of which is lower than the bottom end of the cutting head, for abutting against the surface of the pipe to be cut during the cutting process to maintain a constant distance between the cutting head and the surface of the pipe to be cut.

[0007] Preferably, the abutment portion is a roller, ball, or slider, and at least one of the abutment portions is located on the side of the cutting head near the pipe to be cut.

[0008] Preferably, the elastic support component includes a slider slidably disposed on the bracket and an elastic element that elastically supports the slider in its sliding direction, and the mounting base is fixed to the slider.

[0009] Preferably, the slider moves in a radial direction perpendicular to the tube to be cut.

[0010] Preferably, the elastic element includes an upper spring, the bracket is fixed with an upper spring seat, the top of the upper spring is supported by the upper spring seat, and the bottom of the upper spring abuts against the slider.

[0011] Preferably, the elastic element further includes a lower spring, the bracket is fixed with a lower spring seat, the bottom of the lower spring is supported by the lower spring seat, and the top of the lower spring abuts against the slider.

[0012] Preferably, the bracket is provided with a guide rod, the slider is slidably disposed on the guide rod, and the two ends of the guide rod are respectively fixed to the upper spring seat and the lower spring seat.

[0013] Preferably, it further includes a hanging wall and a driving component for driving the bracket to slide, the driving component being fixed to the hanging wall, and the bracket sliding relative to the hanging wall.

[0014] Preferably, the driving component is a servo electric push cylinder, the fixed end of which is fixed to the hanging wall, and the output end of which is fixed to the bracket.

[0015] Preferably, the hanging wall is fixed to the cutting machine housing, and the bracket is slidably mounted on the cutting machine housing via a slide rail.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. The laser cutting head, by setting a mounting base, an elastic support component and an abutment part on the bracket, forms an adaptive height adjustment structure. When the pipe to be cut is being cut, the elastic support component drives the mounting base to adaptively move in the vertical direction, ensuring that the outer edge of the abutment part continuously abuts against the surface of the pipe to be cut, thereby dynamically maintaining a constant distance between the cutting head and the pipe to be cut and improving the level of automation. 2. This laser cutting head has a guide rod set on the slider, which constrains the slider displacement path and causes the slider to move axially along the guide rod, forming a rigid displacement guiding structure. This effectively limits the non-axial displacement of the slider, prevents the cutting head from deviating from the set processing position, eliminates the phenomenon of missed cutting or inaccurate cutting trajectory of the tube to be cut due to displacement, avoids processing interruption or rework caused by position displacement, and ensures continuous production process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention, mainly showing the hanging wall; Figure 3 This is a partial structural diagram of the present invention, mainly showing the upper spring seat; Figure 4 This is a partial structural schematic diagram of the present invention, mainly showing the elastic element.

[0018] In the diagram: 1. Cutting machine housing; 11. Bracket; 12. Cutting head; 13. Mounting base; 14. Pipe to be cut; 2. Abutment part; 31. Slider; 32. Connecting plate; 4. Elastic element; 41. Upper spring; 42. Lower spring; 51. Upper spring seat; 52. Lower spring seat; 6. Guide rod; 7. Hanging wall; 8. Drive component; 9. Slide rail. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integrated connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0023] Please see Figure 1-4 As shown, this utility model provides a laser cutting head technical solution: A laser cutting head includes a cutting machine housing 1. Inside the housing 1 are a hanging wall 7, a drive component 8, a slide rail 9, and a bracket 11. The hanging wall 7 is fixedly connected to the cutting machine body. The drive component 8 includes a servo electric push cylinder. The fixed end of the servo electric push cylinder is fixedly connected to the hanging wall 7, and the output end is fixedly connected to the bracket 11. The bracket 11 is slidably connected to the cutting machine housing 1 via the slide rail 9. Specifically, the servo electric push cylinder uses a domestic brand (Diyue) 0.5KW servo motor, paired with a 4-speed ratio lead screw 10, and a push cylinder stroke of 300mm, enabling flexible cutting of products with different diameters. Simultaneously, two 45mm linear guides ensure sufficient rigidity and stability of the entire mechanism during cutting. The bracket 11, as the main load-bearing component of the cutting power unit, is made of 40mm thick steel plate and is connected to the cutting machine housing 1 via 4 connecting blocks and 16 M20 bolts with a strength grade of 10.9.

[0024] The bracket 11 is equipped with an elastic support component, a connecting plate 32, a mounting base 13, and a cutting head 12. The elastic support component includes an upper spring seat 51, a sliding rod, a slider 31, and an elastic element 4. The side wall of the upper spring seat 51 is fixedly connected to the bracket 11. The sliding rod is located at the bottom of the upper spring seat 51 and is fixedly connected to the upper spring seat 51. The horizontally arranged slider 31 is sleeved on the sliding rod and is slidably connected to the sliding rod, so that the slider 31 moves along the axial direction of the sliding rod. The elastic element 4 includes an upper spring 41. The vertically arranged upper spring 41 is sleeved on the sliding rod. The top of the upper spring 41 is fixedly connected to the bottom of the upper spring seat 51, and the bottom of the upper spring 41 abuts against the top of the slider 31. The side wall of the vertically arranged connecting plate 32 is fixedly connected to the slider 31, and the other side of the connecting plate 32 is fixedly connected to the side wall of the mounting base 13. The bottom of the mounting base 13 is fixedly connected to the cutting head 12, which faces the pipe 14 to be cut at the bottom of the mounting base 13. The cutting head 12 uses a 12KW laser head and is equipped with a water cooling system and a dust collection system to absorb pollutants such as smoke, dust, and odors generated during cutting, which can effectively improve the working environment, ensure equipment operation, and thus guarantee safety. At least one abutment part 2 is installed on the mounting base 13. The bottom end of the abutment part 2 is lower than the bottom end of the cutting head 12, and the bottom end of the abutment part 2 abuts against the pipe 14 to be cut. When there is only one abutment part 2, the abutment part 2 is located on the side of the mounting base 13 closest to the pipe to be cut 14, so that after the pipe to be cut 14 is cut, the abutment part 2 can still abut against the pipe to be cut 14, thereby improving the stability of the mounting base 13 and the abutment part 2, making it difficult for the cutting head 12 to move arbitrarily; when there are multiple abutment parts 2, the abutment parts 2 are distributed along the axial direction of the pipe to be cut 14, thereby supporting the mounting base 13 and the cutting head 12, so that the distance between the cutting head 12 and the pipe to be cut 14 is constant. Each abutment part 2 includes a roller, ball, or slider 31.

[0025] In other embodiments, a lower spring seat 52 is also mounted on the bracket 11. The lower spring seat 52 is fixedly connected to the bracket 11, and the top of the lower spring seat 52 is fixedly connected to the bottom of the guide rod 6. The elastic support component also includes a lower spring 42, the top of which abuts against the bottom of the slider 31, and the bottom of the lower spring 42 is fixedly connected to the lower spring seat 52.

[0026] The operator transfers the pipe to be cut 14 into the cutting machine housing 1 and moves it along the direction close to the cutting head 12. After the pipe to be cut 14 is transferred to the set position, the servo electric push cylinder is activated. The output end of the servo electric push cylinder drives the bracket 11 to rise and fall, thereby driving the elastic support component, the mounting base 13 and the abutment part 2 to rise and fall synchronously until the abutment part 2 abuts against the pipe to be cut 14. Then the cutting head 12 is activated and the cutting head 12 cuts the pipe to be cut 14. When the surface roundness of the pipe fitting 14 to be cut is uneven (local depression or bulge), that is, when the pipe fitting 14 to be cut is locally depressed, the mounting base 13 moves synchronously under the elastic force of the upper spring 41 until the abutting part 2 on the mounting base 13 abuts against the depression of the pipe fitting 14 to be cut; when the pipe fitting 14 to be cut is locally bulging, the mounting base 13 moves synchronously by overcoming the elastic force of the upper spring 41, and the abutting part 2 always abuts against the bulging part of the pipe fitting 14 to be cut, so that the bottom of the abutting part 2 always abuts against the pipe fitting 14 to be cut, and the distance between the cutting head 12 and the pipe fitting 14 to be cut is constant, forming an adaptive height adjustment structure. The mounting base 13 adaptively moves in the vertical direction to ensure that the outer edge of the abutting part 2 continues to abut against the surface of the pipe fitting 14 to be cut, thereby dynamically maintaining a constant distance between the cutting head 12 and the pipe fitting 14 to be cut, and improving the level of automation.

[0027] The working principle of this utility model is as follows: In this embodiment, when a laser cutting head is in use, and the tube to be cut 14 is being cut inside the cutting machine housing 1, a servo electric push cylinder is activated. The output end of the servo electric push cylinder drives the support 11 to rise and fall, thereby causing the elastic support component, mounting base 13 and abutment part 2 on the support 11 to move synchronously until the cutting head 12 on the mounting base 13 is transmitted to the set height. At this time, the bottom of the abutment part 2 abuts against the tube to be cut 14, and the distance between the cutting head 12 at the bottom of the mounting base 13 and the tube to be cut 14 is constant, thereby adapting to tubes 14 of different sizes. When the surface roundness of the pipe fitting 14 to be cut is uneven (local depression or bulge), that is, when the pipe fitting 14 to be cut is locally depressed, the mounting base 13 moves synchronously under the elastic force of the upper spring 41 until the abutting part 2 on the mounting base 13 abuts against the depression of the pipe fitting 14 to be cut; when the pipe fitting 14 to be cut is locally bulging, the mounting base 13 moves synchronously by overcoming the elastic force of the upper spring 41, and the abutting part 2 always abuts against the bulging part of the pipe fitting 14 to be cut, thereby making the distance between the cutting head 12 and the pipe fitting 14 to be cut constant, forming an adaptive height adjustment structure. The mounting base 13 adaptively displaces in the vertical direction to ensure that the outer edge of the abutting part 2 continues to abut against the surface of the pipe fitting 14 to be cut, thereby dynamically maintaining a constant distance between the cutting head 12 and the pipe fitting 14 to be cut, and improving the level of automation.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A laser cutting head comprising a support (11), a cutting head (12) and a mounting seat (13), the cutting head (12) being fixed to the mounting seat (13), characterized in that: The mounting base (13) is elastically connected to the bracket (11) through an elastic support component; the mounting base (13) is provided with at least one abutment part (2), the bottom end of the abutment part (2) is lower than the bottom end of the cutting head (12), and is used to abut against the surface of the pipe to be cut (14) during the cutting process to maintain a constant distance between the cutting head (12) and the surface of the pipe to be cut (14); The elastic support component includes a slider (31) slidably disposed on the bracket (11) and an elastic element (4) elastically supporting the slider (31) in its sliding direction, and the mounting base (13) is fixed to the slider (31); The slider (31) moves in a radial direction perpendicular to the tube (14) to be cut; The elastic element (4) includes an upper spring (41), the bracket (11) is fixed with an upper spring seat (51), the top of the upper spring (41) is supported on the upper spring seat (51), and the bottom of the upper spring (41) abuts against the slider (31). The elastic element (4) also includes a lower spring (42), the bracket (11) is fixed with a lower spring seat (52), the bottom of the lower spring (42) is supported on the lower spring seat (52), and the top of the lower spring (42) abuts against the slider (31). The bracket (11) is provided with a guide rod (6), and the slider (31) is slidably disposed on the guide rod (6). The two ends of the guide rod (6) are respectively fixed to the upper spring seat (51) and the lower spring seat (52).

2. A laser cutting head according to claim 1, characterized in that: The abutment (2) is a roller, ball, or slider (31), and at least one of the abutment (2) is located on the side of the cutting head (12) near the pipe (14) to be cut.

3. A laser cutting head according to claim 1, characterized in that: It also includes a hanging wall (7) and a drive component (8) for driving the bracket (11) to slide, the drive component (8) being fixed to the hanging wall (7) and the bracket (11) sliding relative to the hanging wall (7).

4. A laser cutting head according to claim 3, wherein: The driving component (8) is a servo electric push cylinder. The fixed end of the servo electric push cylinder is fixed to the hanging wall (7), and the output end of the servo electric push cylinder is fixed to the bracket (11).

5. A laser cutting head according to claim 3, wherein: The hanging wall (7) is fixed to the cutting machine housing (1), and the bracket (11) is slidably disposed on the cutting machine housing (1) via the slide rail (9).

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