Laser cutting head and laser cutting machine

Abstract

The utility model provides a laser cutting head and a laser cutting machine, and relates to the technical field of laser cutting, the laser cutting head comprises a collimation assembly, a driving assembly, a follow-up assembly and a focusing assembly, the collimation assembly comprises a light guide cylinder, and the light guide cylinder is used for conducting laser; the driving assembly is connected with the collimation assembly, the follow-up assembly comprises a flange, and the flange is connected with the driving assembly; the focusing assembly is connected with the follow-up assembly; wherein the driving assembly comprises a roller and a gear ring which are matched with each other, the gear ring is connected with the flange, the roller rotates to drive the gear ring and the flange to rotate, and the transmission precision of the driving assembly can be effectively improved by adopting a transmission form of the gear ring and the flange.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting, in particular to a laser cutting head and a laser cutting machine. Background Art

[0002] Laser cutting is a new type of thermal cutting technology. It uses a high-power density laser beam to irradiate the material to be cut, so that the material is quickly heated to the vaporization temperature and evaporates to form holes. As the beam moves on the material, the holes continuously form a very narrow slit to complete the cutting of the material. Laser cutting has the advantages of fast cutting speed and high production efficiency.

[0003] At present, the laser cutting head has a complex structure. When the laser head is rotating and cutting, the transmission accuracy of the drive assembly is not high, which may affect the cutting accuracy of the laser and cause a decrease in cutting quality. Utility Model Content

[0004] The utility model provides a laser cutting head and a laser cutting machine to solve the technical problem of how to improve the transmission accuracy of a drive assembly.

[0005] An embodiment of the utility model provides a laser cutting head, which includes: a collimation assembly including a light guide tube, which is used to conduct laser; a driving assembly connected to the collimation assembly, a follower assembly including a flange, and the flange is connected to the driving assembly; a focusing assembly connected to the follower assembly; wherein the driving assembly includes a roller and a gear ring that cooperate with each other, the gear ring is connected to the flange, and the roller rotates to drive the gear ring and the flange to rotate.

[0006] Furthermore, the driving assembly also includes a servo motor and a reducer, and the servo motor is connected to the roller via the reducer.

[0007] Furthermore, the drive assembly includes a first drive assembly and a second drive assembly, and the second drive assembly is respectively connected to the first drive assembly and the follower assembly; the first drive assembly can drive the second drive assembly to rotate, and the second drive assembly can drive the follower assembly to rotate.

[0008] Furthermore, the first drive assembly includes a first servo motor, a first reducer, a first roller and a first ring gear, the second drive assembly includes a first flange, the first ring gear is connected to the first flange, and the first servo motor drives the first ring gear and the first flange to rotate.

[0009] Furthermore, the first servo motor is connected to the first reducer and is located at one side of the light guide tube, and an extension direction of a motor shaft of the first servo motor is parallel to an extension direction of the light guide tube.

[0010] Furthermore, the second driving assembly includes a second servo motor, a second reducer, a second roller and a second ring gear, the follower assembly includes a second flange, the second ring gear is connected to the second flange, and the second servo motor drives the second ring gear and the second flange to rotate.

[0011] Furthermore, a pipeline support is also provided on the second driving assembly, and a plurality of wire groove clamping positions are arranged at intervals on the pipeline support for fixing the pipeline.

[0012] Furthermore, the laser cutting head also includes a gear ring shield, and the gear ring shield wraps the gear ring.

[0013] The utility model also provides a laser cutting machine, which includes: the above-mentioned laser cutting head; a cantilever beam, the laser cutting head is installed on the cantilever beam frame; and a frame, one end of the cantilever beam is connected to the frame.

[0014] Furthermore, the cantilever beam has a receiving cavity, and a reinforcing component is arranged in the receiving cavity, and the reinforcing component is used to improve the structural strength of the cantilever beam.

[0015] The utility model provides a laser cutting head and a laser cutting machine. The laser cutting head comprises a collimating assembly, a driving assembly, a following assembly and a focusing assembly. The optical fiber is connected through the collimating assembly, and the laser is transmitted by a light guide tube. The driving assembly is connected to the collimating assembly, and the following assembly comprises a flange, which is connected to the driving assembly. The following assembly and the focusing assembly can be driven to rotate by the rotation of the driving assembly, so that the laser emitted by the focusing assembly can be cut. The driving assembly adopts a transmission form of rollers and gear rings that cooperate with each other, and the gear ring is connected to the flange. The driving roller can rotate the gear ring accordingly, and the gear ring drives the rotation of the flange and related devices. The roller gear ring is used for zero backlash transmission, which improves the transmission accuracy of the driving assembly, thereby improving the cutting accuracy of the laser and the cutting quality. At the same time, the roller and gear ring are matched, and the roller gear ring driving structure has less restrictions on the optical path diameter and is more applicable to a wider range of scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a laser cutting head provided in an embodiment of the utility model;

[0017] Figure 2 A cross-sectional view of a laser cutting head provided in an embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the structure of a first drive assembly provided in an embodiment of the utility model;

[0019] Figure 4A schematic structural diagram of the first drive assembly provided by an embodiment of the utility model from another perspective;

[0020] Figure 5 A schematic diagram of the structure of a second drive assembly provided in an embodiment of the utility model;

[0021] Figure 6 A schematic diagram of the structure of a laser cutting machine provided in an embodiment of the utility model;

[0022] Figure 7 A schematic structural diagram of the laser cutting machine from another perspective provided in an embodiment of the utility model.

[0023] Description of Reference Numerals

[0024] 10. Laser cutting machine; 100. Laser cutting head; 110. Collimation assembly; 111. Laser generator; 112. Light guide tube; 120. Drive assembly; 120A. First drive assembly; 120B. Second drive assembly; 121. Roller; 1211. First roller; 1212. Second roller; 122. Gear ring; 1221. First gear ring; 1222. Second gear ring; 123. Servo motor; 1231. First servo motor; 1232. Second servo motor; 124. Reducer; 1241. First reducer device; 1242, second reducer; 1251, first rotating support; 1252, second rotating support; 1261, first flange; 127, pipeline support; 128, gear ring shield; 130, follow-up assembly; 131, flange; 1311, second flange; 132, assembly shell; 140, focusing assembly; 141, focusing device; 142, sleeve; 143, nozzle; 144, anti-collision device; 145, protective mirror device; 200, cantilever beam; 210, accommodating chamber; 220, reinforcement component; 300, frame. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features in the utility model will not be described separately.

[0027] In the following description, the terms "first\second\..." are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions "above", "below", "outside" and "inside" are all directions in normal use, and the directions "left" and "right" refer to the left and right directions shown in the corresponding schematic diagrams, which may or may not be the left and right directions in normal use.

[0028] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. The term "connected" includes both direct and indirect connections unless otherwise specified.

[0029] In a specific embodiment, the laser cutting head provided in the present application is suitable for any type of laser cutting machine. Exemplarily, the laser cutting head is suitable for laser melting cutting type laser cutting machine; exemplary, the laser cutting head is suitable for laser oxidation cutting type laser cutting machine; exemplary, the laser cutting head is suitable for laser gasification cutting type laser cutting machine; the laser cutting head is also suitable for high-power laser cutting and carbon dioxide laser cutting; for the sake of ease of explanation, taking the laser cutting head suitable for laser melting cutting type laser cutting machine as an example, the structure of the laser cutting head is exemplarily explained.

[0030] At present, the rotation of related laser cutting heads is all transmitted by gears. Gear transmission is adopted. There may be gaps between the gears, resulting in low transmission accuracy, which may affect the laser cutting accuracy. To address this problem, the present application provides a laser cutting head to solve the above problem.

[0031] In some embodiments, Figure 1 and Figure 2As shown, the laser cutting head 100 includes a collimating assembly 110, a driving assembly 120, a follower assembly 130 and a focusing assembly 140. The collimating assembly 110 includes a light guide tube 112, which is used to transmit laser light; the driving assembly 120 is connected to the collimating assembly 110, the follower assembly 130 includes a flange 131, and the flange 131 is connected to the driving assembly 120; the focusing assembly 140 is connected to the follower assembly 130; wherein, the driving assembly 120 includes a roller 121 and a gear ring 122 that cooperate with each other, the gear ring 122 is connected to the flange 131, and the roller 121 rotates to drive the gear ring 122 and the flange 131 to rotate.

[0032] Specifically, the collimation assembly 110 uses the laser beam as a directionally emitted light beam to form a light beam in space as a collimation reference line, and includes a laser generator 111 and a light guide tube 112. The laser generator 111 is used to access the optical fiber, and the light guide tube 112 is used to conduct the laser.

[0033] One end of the driving assembly 120 is connected to the collimating assembly 110 , and the other end is connected to the follower assembly 130 . The driving assembly 120 drives the follower assembly 130 and the focusing assembly 140 to rotate, so that the focusing assembly 140 emits laser for cutting.

[0034] The specific structure of the driving assembly 120 includes a roller 121 and a gear ring 122. The roller 121 has a roller body and a roller column. The roller column is evenly arranged on the roller body along the circumferential direction. The edge of the gear ring 122 has a meshing portion that matches the roller column. The motor is connected to the roller 121, and the motor drives the roller 121 to rotate. The ring gear 122 is mounted on the sleeve of the optical path transmission, and the ring gear 122 is connected to the parts that need to be rotated. For example, the follower assembly 130 and the focusing assembly 140 need to rotate, and the ring gear 122 is connected to the flange 131 of the follower assembly 130. The roller 121 rotates under the action of the motor, thereby driving the ring gear 122 to rotate. The rotation of the ring gear 122 drives the flange 131 to rotate. The zero backlash transmission of the roller and ring gear is utilized to improve the transmission accuracy of the drive assembly 120. At the same time, the roller 121 and the ring gear 122 are matched, and the transmission accuracy is high. The drive assembly 120 can use a servo motor 123 and a reducer 124, and the servo motor 123 is connected to the roller 121 through the reducer 124. Compared with the traditional method of only using a DD motor (direct drive motor), the use of a servo motor 123 can reduce the weight of the drive assembly 120, improve the accuracy of the entire laser cutting head 100, and improve the stability of the laser cutting machine 10. At the same time, the laser cutting head 100 using the servo motor 123 is smaller in size, making the laser cutting head 100 more suitable for cutting complex parts.

[0035] During the laser cutting process, the follower assembly 130 allows the laser nozzle to maintain a preset distance from the cutting surface, thereby efficiently completing the cutting of porous workpieces and various uneven curved surfaces.

[0036] The focusing assembly 140 includes a focusing device 141 , a sleeve 142 and a nozzle 143 . Laser is emitted through the nozzle 143 for cutting. In order to protect the nozzle 143 , the focusing assembly 140 may also be provided with an anti-collision device 144 and a protective mirror device 145 .

[0037] It should be noted that the driving assembly 120 may include one set of transmission structures or two sets of transmission structures. For ease of understanding, a coordinate system is established for auxiliary explanation. The extension direction of the light guide tube 112 is defined as the vertical direction, which is defined as the Z axis. The X axis and the Y axis are perpendicular to the Z axis. The X axis and the Y axis form a horizontal plane.

[0038] Exemplarily, when the driving assembly 120 includes only one set of transmission structures, the laser emitted by the focusing assembly 140 can only perform cutting on the XY plane.

[0039] Exemplarily, when the drive assembly 120 includes two sets of transmission structures, it can be specifically understood that the drive assembly 120 includes a first drive assembly 120A and a second drive assembly 120B. The first drive assembly 120A can be understood as what is referred to as a C-axis drive assembly in the art, and the second drive assembly 120B can be understood as what is referred to as an A-axis drive assembly in the art. One end of the first drive assembly 120A is connected to the collimation assembly 110, and the other end of the first drive assembly 120A is connected to the second drive assembly 120B. The first drive assembly 120A can drive the second drive assembly 120B, the follower assembly 130, and the focusing assembly. The first drive assembly 120A and the second drive assembly 120B are connected to the follower assembly 130 at one end, and the second drive assembly 120B can drive the follower assembly 130 and the focusing assembly 140 to rotate around the X axis to meet the requirement that the laser emitted by the focusing assembly 140 can cut on the XZ plane. Under the joint action of the first drive assembly 120A and the second drive assembly 120B, cutting can be achieved at any position in the XYZ three-dimensional space. The specific arrangement structure will be given later, and no further details will be given here.

[0040] The utility model provides a laser cutting head and a laser cutting machine. The laser cutting head comprises a collimating assembly, a driving assembly, a following assembly and a focusing assembly. The optical fiber is connected through the collimating assembly, and the laser is transmitted by a light guide tube. The driving assembly is connected to the collimating assembly, and the following assembly comprises a flange, which is connected to the driving assembly. The following assembly and the focusing assembly can be driven to rotate by the rotation of the driving assembly, so that the laser emitted by the focusing assembly can be cut. The driving assembly adopts a transmission form of rollers and gear rings that cooperate with each other, and the gear ring is connected to the flange. The driving roller can rotate the gear ring accordingly, and the gear ring drives the rotation of the flange and related devices. The roller gear ring is used for zero backlash transmission, which improves the transmission accuracy of the driving assembly, thereby improving the cutting accuracy of the laser and the cutting quality. At the same time, the roller and gear ring are matched, and the roller gear ring driving structure has less restrictions on the optical path diameter and is more applicable to a wider range of scenarios.

[0041] In some embodiments, Figure 1 , Figure 3 and Figure 4 As shown, the first drive assembly 120A is a C-axis drive assembly, which mainly meets the needs of rotating the laser cutting nozzle around the Z-axis direction to meet the cutting requirements of the horizontal plane. The first drive assembly 120A specifically includes a first servo motor 1231, a first reducer 1241, a first roller 1211 and a first gear ring 1221. The output shaft of the first servo motor 1231 is connected to the first reducer 1241. The first reducer 1241 is used to reduce the speed of the first servo motor 1231. The first reducer 1241 is connected to the first roller 1211. The rotation of the first servo motor 1231 can It is capable of driving the rotation of the first roller 1211. The second driving assembly 120B includes a first flange 1261 and a second rotating support 1252. The first flange 1261 and the second rotating support 1252 are connected. The first flange 1261 is connected to the first ring gear 1221. The roller column of the first roller 1211 cooperates with the meshing portion of the edge of the ring gear 122 to drive the ring gear 122 to rotate. The rotation of the ring gear 122 connects the first flange 1261 and the second rotating support 1252 to rotate, and the follower assembly 130 and the focusing assembly 140 connected to the second driving assembly 120B also rotate.

[0042] In some embodiments, in order to better arrange the first drive assembly 120A and save arrangement space, the arrangement direction of the first servo motor 1231 and the first reducer 1241 is parallel to the extension direction of the light guide tube 112, that is, the first servo motor 1231 and the first reducer 1241 are connected in the vertical direction, and the extension direction of the motor shaft of the first servo motor 1231 is the vertical direction. For the convenience of fixation, the first drive assembly 120A is also provided with a first rotating support 1251, and the first rotating support 1251 is mounted on the light guide tube 112, and the first servo motor 1231 and the first reducer 1241 are fixed on the first rotating support 1251, and the first servo motor 1231 and the first reducer 1241 are close to the light guide tube 112.

[0043] In some embodiments, in combination Figure 1 , Figure 2 and Figure 5 As shown, in order to meet the cutting requirements of the vertical plane, the second drive assembly 120B includes a second servo motor 1232, a second reducer 1242, a second roller 1212 and a second gear ring 1222. The output shaft of the second servo motor 1232 is connected to the second reducer 1242. The second servo motor 123 is decelerated by the second reducer 1242. The second reducer 1242 is connected to the second roller 1212. The rotation of the second servo motor 1232 can drive the rotation of the second roller 1212. The follower assembly 130 includes a second flange 1311 and an assembly housing 132. The second flange 1311 is connected to the assembly housing 132. The other side of the second flange 1311 is connected to the second gear ring 1222. The roller column of the second roller 1212 cooperates with the meshing portion of the edge of the second gear ring 1222 to drive the second gear ring 1222 to rotate. The rotation of the second gear ring 1222 connects the second flange 1311 and the assembly housing 132 to rotate, and the focusing assembly 140 connected to the follower assembly 130 also rotates. It should be noted that the output shaft of the second servo motor 1232 is vertically arranged with the output shaft of the first servo motor 1231, and the second servo motor 1232 and the second reducer 1242 are arranged in the horizontal direction. Under the combined action of the first drive assembly 120A and the second drive assembly 120B, the laser nozzle can cut in a three-dimensional plane.

[0044] In some embodiments, Figure 1 and Figure 5As shown, considering that the laser cutting head 100 needs to arrange pipelines, in order to avoid the influence of cluttered pipelines on the cutting of the laser cutting head 100 and to facilitate the replacement and maintenance of pipelines, the laser cutting head 100 is also provided with a pipeline bracket 127, and the pipeline is fixed by the pipeline bracket 127. The pipeline bracket 127 can be arranged on the second rotating support 1252 of the second drive assembly 120B. A plurality of wire groove clamps are arranged at intervals on the pipeline bracket 127, and the wire groove clamps are used to clamp and fix the pipelines respectively, so that the pipelines are neatly arranged side by side.

[0045] In some embodiments, Figure 1 As shown, in order to prevent dust and impurities from falling into the gear ring 122 and affecting the coordinated transmission between the roller 121 and the gear ring 122, the laser cutting head 100 is further provided with a gear ring shield 128, which wraps the gear ring 122. The gear ring 122 includes a first gear ring 1221 and a second gear ring 1222, and the first gear ring 1221 and the second gear ring 1222 are also equipped with a gear ring shield 128 to prevent dust.

[0046] This embodiment also provides a laser cutting machine 10, such as Figure 6 and Figure 7As shown, the laser cutting machine 10 includes a laser cutting head 100 , a cantilever beam 200 and a frame 300 . The laser cutting head 100 is mounted on the cantilever beam 200 , and one end of the cantilever beam 200 is connected to the frame 300 . Specifically, one end of the cantilever beam 200 is connected to the frame 300. The connection here includes a fixed connection, in which one end of the cantilever beam 200 is fixed to the frame 300; it also includes a movable connection, in which the cantilever beam 200 can move relative to the frame 300. The movable connection method is not limited here. Any device or structure that can cause the cantilever beam 200 and the frame 300 to move relative to each other meets the requirements of this case. For example, a slide rail is provided on the frame 300, and a slide groove is provided at one end of the cantilever beam 200. The slide groove of the cantilever beam 200 wraps the slide rail of the frame 300, and the cantilever beam 200 can slide on the frame 300. At the same time, the cooperation between the slide groove and the slide rail can effectively prevent the cantilever beam 200 from falling off the frame 300. Similarly, the frame 300 can have a slide groove, and the cantilever beam 200 can have a slide rail. One end of the cantilever beam 200 can be connected to the frame 300 by a single slide rail. Specifically, it can be understood that the cantilever beam 200 is provided with a slide groove, and the frame 300 is provided with a slide rail. The cantilever beam 200 is connected to the frame 300 through the cooperation of the single slide groove and the slide rail. In order to improve safety and reduce the bearing capacity of the single slide rail at the same time, multiple slide rails can be provided, that is, the cantilever beam 200 is provided with multiple slide grooves, and the frame 300 is provided with multiple slide rails. Through the cooperation of multiple slide grooves and multiple slide rails, the bearing capacity of the connection position between the cantilever beam 200 and the frame 300 can be effectively dispersed. In order to further improve the overall stability of the cantilever beam 200 and the frame 300, two slide rails are arranged on the frame 300. The two slide rails are parallel and not in the same vertical plane. One slide rail is close to the top of the frame 300 to provide tension to the cantilever beam 200, and the other is located near the middle of the frame 300 to provide support for the cantilever beam. The stability of the cantilever beam 200 and the frame 300 is effectively improved through the inclined-stayed structure.

[0047] The laser cutting head 100 is installed on the cantilever beam 200. A slide groove can also be set on the cantilever beam 200. The slide groove is arranged along the extension direction of the cantilever beam 200. The laser cutting head 100 can move along the slide groove of the cantilever beam 200. At the same time, the laser cutting head 100 also moves in the up and down directions by transmission methods such as ball screws or transmission gears. The up and down directions are the Z-axis directions described in this field. Through the movement of the cantilever beam 200 along the frame 300, the movement of the laser cutting head 100 along the cantilever beam 200, and the up and down movement of the laser cutting head 100 itself, the laser cutting head 100 can meet the movement in the three-dimensional direction.

[0048] In some embodiments, Figure 7As shown, the cantilever beam 200 has a housing cavity 210, and a reinforcement component 220 is arranged in the housing cavity 210. The reinforcement component 220 is used to improve the structural strength of the cantilever beam 200. Specifically, the cantilever beam 200 has a hollow housing cavity 210. The hollow here refers to the space surrounded by the cantilever beam 200, and does not only represent that the interior of the entire cantilever beam 200 is hollow. The cantilever beam 200 may have a corresponding structure inside. The specific structure of the cantilever beam 200 is not limited. The cantilever beam 200 may include only an upper plate and a bottom plate, or only an upper plate and a side plate. The cantilever beam 200 satisfies that one end can be connected to the frame 300, and the cantilever beam 200 can be used to install and fix other devices, such as installing a laser cutting head 100. For the sake of convenience, the following takes the inclined cantilever beam 200 as an example, and the cantilever beam 200 is a trapezoidal body. In order to reduce the weight of the cantilever beam 200, the cantilever beam 200 has a hollow accommodating cavity 210, and a reinforcing component 220 is arranged in the accommodating cavity 210. The reinforcing component 220 is any device or structure that can improve the structural strength of the cantilever beam 200. It should be noted that the connection between the reinforcing component 220 and the cantilever beam 200 can be any form of connection, such as riveting, welding, and fixing by bolts and nuts. For the overall structural performance, welding can be selected for connection. Exemplarily, the reinforcing component 220 can be a reinforcing plate, and the rigidity of the cantilever beam 200 is increased by arranging the reinforcing plate inside the accommodating cavity 210. The specific arrangement of the reinforcing plate is not limited here. The reinforcing plate can be a flat plate or a plate with a bend. For example, the reinforcing plate can be arranged vertically inside the accommodating cavity 210; for example, it can also be arranged horizontally inside the accommodating cavity 210; at the same time, multiple reinforcing plates can be spliced ​​into a triangle to improve the stability of the structure and arranged inside the accommodating cavity 210. The arrangement of the reinforcing plate will be described in detail later, and no further description will be made here. Exemplarily, the reinforcing component 220 may also be a bearing platform. For example, a cylinder is arranged inside the accommodating cavity 210 to increase the rigidity of the cantilever beam 200. Furthermore, the interior of the accommodating cavity 210 may be a combination of a reinforcing plate and a bearing platform. Through the combination of the reinforcing plate and the bearing platform, a cage structure is formed in the accommodating cavity 210 through the reinforcing component 220, which effectively ensures the rigidity of the cantilever beam 200 while reducing the weight of the cantilever beam 200.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A laser cutting head, characterized in that: include: A collimation assembly, comprising a light guide tube, wherein the light guide tube is used to conduct laser light; A driving assembly connected to the collimation assembly, A follower assembly, comprising a flange, wherein the flange is connected to the driving assembly; A focusing assembly connected to the follower assembly; Wherein, the driving assembly includes a roller and a gear ring that cooperate with each other, the gear ring is connected to the flange, and the roller rotates to drive the gear ring and the flange to rotate.

2. The laser cutting head according to claim 1, characterized in that: The driving assembly also includes a servo motor and a reducer, and the servo motor is connected to the roller via the reducer.

3. The laser cutting head according to claim 2, characterized in that: The driving assembly includes a first driving assembly and a second driving assembly, wherein the second driving assembly is connected to the first driving assembly and the follower assembly respectively; the first driving assembly can drive the second driving assembly to rotate, and the second driving assembly can drive the follower assembly to rotate.

4. The laser cutting head according to claim 3, characterized in that: The first driving assembly includes a first servo motor, a first reducer, a first roller and a first ring gear, and the second driving assembly includes a first flange. The first ring gear is connected to the first flange, and the first servo motor drives the first ring gear and the first flange to rotate.

5. The laser cutting head according to claim 4, characterized in that: The first servo motor is connected to the first reducer and is located at one side of the light guide tube. The extension direction of the motor shaft of the first servo motor is parallel to the extension direction of the light guide tube.

6. The laser cutting head according to claim 3, characterized in that: The second driving assembly includes a second servo motor, a second reducer, a second roller and a second gear ring. The follower assembly includes a second flange. The second gear ring is connected to the second flange. The second servo motor drives the second gear ring and the second flange to rotate.

7. The laser cutting head according to claim 3, characterized in that: A pipeline support is also provided on the second driving assembly, and a plurality of wire groove clamping positions are arranged at intervals on the pipeline support for fixing the pipeline.

8. The laser cutting head according to claim 1, characterized in that: The laser cutting head also includes a gear ring shield, which wraps the gear ring.

9. A laser cutting machine, characterized in that: include: The laser cutting head according to any one of claims 1 to 8; a cantilever beam, the laser cutting head being mounted on the cantilever beam; A frame, one end of the cantilever beam is connected to the frame.

10. The laser cutting machine according to claim 9, characterized in that: The cantilever beam has a receiving cavity, and a reinforcing component is arranged in the receiving cavity. The reinforcing component is used to improve the structural strength of the cantilever beam.

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