Laser cutting head device and laser pipe cutting machine tool

Abstract

The utility model relates to laser pipe cutting machine tool technical field, specifically disclose a kind of laser cutting head device and laser pipe cutting machine tool, the laser cutting head device includes pedestal, first swing subassembly and second swing subassembly. Among them, first swing subassembly includes first drive mechanism and support piece;Second swing subassembly includes second drive mechanism, laser cutting head first part and laser cutting head second part.The utility model discloses laser cutting head device, with high-precision cutting and high-efficiency cutting's advantage simultaneously, tail waste can also be reduced, the function of laser pipe cutting machine tool is enriched, processing quality and output are improved, effectively solve the problem of laser cutting head device machining precision and slow in prior art.

Description

Technical Field

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

[0002] Currently, ordinary laser tube cutting machines can only perform straight cuts on tubes and cannot perform beveling. Common laser tube cutting machines with a single swing axis can perform beveling, but due to the poor positioning accuracy of the chuck mechanism and other transmission mechanisms, and the long cantilever distance between the cutting point and the fixed point, they cannot meet the requirements of high-precision processing. Furthermore, the chuck mechanism involves frequent feeding and receiving actions, but its dynamic response performance is generally weak, making it difficult to increase the feeding speed and resulting in significant time consumption, thus hindering further improvements in the processing efficiency of laser tube cutting machines. Therefore, there is an urgent need to design a laser cutting head device to improve the processing efficiency of tubes. Utility Model Content

[0003] The purpose of this invention is to provide a laser cutting head device and a laser tube cutting machine tool to solve the problems of poor precision and slow processing efficiency of the laser cutting head device in the existing laser tube cutting machine tool.

[0004] To address the aforementioned problems, this utility model provides a laser cutting head device, comprising: a base, a motion component capable of being mounted on a laser tube cutting machine; a first swing assembly, including a first drive mechanism and a support member, wherein the first drive mechanism is mounted on the base and connected to a first end of the support member to drive the support member to rotate around a first rotation axis, the first rotation axis being parallel to a horizontal plane; and a second swing assembly, including a second drive mechanism, a first laser cutting head, and a second laser cutting head, wherein the second drive mechanism and the first laser cutting head are directly or indirectly fixedly connected and both are disposed at a second end of the support member, and the second laser cutting head is disposed on the second drive mechanism and is driven by the second drive mechanism to rotate around a second rotation axis; the central axis of the first laser cutting head coincides with the axis of the second rotation axis, and the central axis of the second laser cutting head is perpendicular to the axis of the second rotation axis; the second rotation axis is located above the first rotation axis and parallel to the first rotation axis; the first laser cutting head can be connected to a laser source, and the second laser cutting head can emit laser light to process the tube.

[0005] As an optional technical solution for the laser cutting head device, the second part of the laser cutting head includes a nozzle, which is located at the end of the second part of the laser cutting head; when the first rotating shaft is at zero position, the second rotating shaft is located directly above the first rotating shaft; when the second rotating shaft is at zero position, the central axis of the second part of the laser cutting head is located in the plane formed by the first rotating shaft and the second rotating shaft, and the end of the nozzle is located on the axis of the first rotating shaft.

[0006] As an optional technical solution for laser cutting head devices

[0007] The rotation range of the first drive mechanism is ±50°; and / or,

[0008] The rotation range of the second drive mechanism is ±50°.

[0009] As an optional technical solution for the laser cutting head device, the first driving mechanism includes a first driving motor, a reducer, and a first flange. The first flange is disposed on the base, the first driving motor and the reducer are respectively disposed on both sides of the first flange, and the support member is disposed on the output end of the reducer. The input end of the reducer is connected to the output shaft of the first driving motor to drive the support member to rotate, thereby driving the second swing assembly to rotate.

[0010] As an optional technical solution for the laser cutting head device, the second drive mechanism includes a second drive motor and a second flange. The second drive motor is located on one side of the second end of the support member, one side of the second flange is located on the output shaft of the second drive motor, and the second part of the laser cutting head is located on the other side.

[0011] As an optional technical solution for the laser cutting head device, the second drive motor is a DD motor. The DD motor has a hollow structure, which allows the laser beam to pass from the first part of the laser cutting head through the second drive motor to the second part of the laser cutting head, so as to ensure that the axis of the second rotation shaft coincides with the laser light path in the first part of the laser cutting head; the DD motor can drive the second part of the laser cutting head to swing.

[0012] As an optional technical solution for the laser cutting head device, the DD motor includes a bearing housing, a bearing body, a stator, and a rotor. The bearing housing and the stator are both disposed on one side of the second end of the support member. The bearing body is mounted on the bearing housing, and the rotor is mounted on the bearing body and connected to the second flange.

[0013] As an optional technical solution for the laser cutting head device, the first part of the laser cutting head further includes a laser fiber interface, and the second part of the laser cutting head further includes a laser reflection module; the laser beam enters the first part of the laser cutting head from the laser fiber interface, is conditioned into a parallel beam, enters the second part of the laser cutting head, is reflected by the laser reflection module, and is further focused before being emitted from the nozzle to cut the pipe.

[0014] As an optional technical solution for the laser cutting head device, the support includes a first support plate, a second support plate, and a third support plate. The first support plate is perpendicular to the first driving mechanism, and the third support plate is perpendicular to the second driving mechanism. The included angles between the first support plate, the third support plate, and the second support plate are the same.

[0015] On the other hand, this utility model provides a laser tube cutting machine tool, including a machine tool body, a moving component, a laser fiber connector, and a laser cutting head device as described in any of the above embodiments. The moving component is disposed on the machine tool body, the laser cutting head device is disposed on the moving component, and the laser fiber connector is connected to the laser fiber interface of the laser cutting head device.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention provides a laser cutting head device, comprising a base, a first swing assembly, and a second swing assembly. The first swing assembly includes a first drive mechanism and a support member; the second swing assembly includes a second drive mechanism, a first part of the laser cutting head, and a second part of the laser cutting head. When using this laser cutting head device for pipe cutting, keeping the second rotating shaft fixed and the first rotating shaft stationary, the second part of the laser cutting head can perform conventional straight / bevel cutting. Since the nozzle end of the second part of the laser cutting head is located on the axis of the first rotating shaft, only the first drive mechanism needs to be activated to adjust the bevel angle, eliminating the need for other moving axes to cooperate. This avoids positioning errors caused by multi-axis linkage and improves the processing accuracy of bevel cutting. When straight cutting pipes, the second part of the laser cutting head can also swing rapidly around the second rotating shaft with a small amplitude under the drive of the second drive mechanism, thereby quickly cutting the pipe along its length within a small range. This, combined with the machine tool feeding mechanism, performs interpolation motion, improving processing efficiency. The improvement is even more significant when processing a large number of small-sized graphics. Under normal circumstances, the first and second rotating axes can also operate simultaneously with the vertical motion axis of the machine tool, enabling the laser cutting head device to have independent longitudinal cutting capability for tubes. On the one hand, it can cooperate with the feeding mechanism to improve processing speed; on the other hand, it can reduce the operating distance and number of times the feeding mechanism operates when the load on the feeding mechanism is too high, thereby improving processing efficiency. In addition, the laser cutting head device can also move closer to the clamping point of the tube for cutting, shortening the tail material length. The laser cutting head device of this utility model has the advantages of both high-precision cutting and high-efficiency cutting, and can also reduce tail material waste, enrich the functions of the laser tube cutting machine tool, improve processing quality and output, and effectively solve the problems of poor processing accuracy and slow efficiency of existing laser cutting head devices. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the laser cutting head device in the embodiment of this utility model;

[0019] Figure 2 This is a cross-sectional view of the laser cutting head device in an embodiment of this utility model.

[0020] In the picture:

[0021] 1. Base;

[0022] 2. First swing assembly; 22. Support member; 211. First support plate; 212. Second support plate; 213. Third support plate; 21. First drive mechanism; 221. First drive motor; 222. Reducer; 223. First flange;

[0023] 3. Second swing assembly; 31. Second drive mechanism; 311. Second drive motor; 3111. Bearing housing; 3112. Bearing body; 3113. Stator; 3114. Rotor; 312. Second flange; 32. First part of laser cutting head; 321. Laser fiber interface; 33. Second part of laser cutting head; 331. Nozzle; 332. Laser reflection module; 34. Laser fiber connector. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] like Figures 1 to 2As shown, this embodiment provides a laser cutting head device, which includes a base 1, a first swing assembly 2, and a second swing assembly 3. The system comprises: a base 1, a moving component that can be mounted on a laser tube cutting machine; a first swing assembly 2, including a first drive mechanism 21 and a support member 22, wherein the first drive mechanism 21 is mounted on the base 1 and connected to the first end of the support member 22 to drive the support member 22 to rotate around a first rotating axis, the first rotating axis being parallel to the horizontal plane; and a second swing assembly 3, including a second drive mechanism 31, a first part 32 of a laser cutting head, and a second part 33 of a laser cutting head, wherein the second drive mechanism 31 and the first part 32 of the laser cutting head are directly or indirectly fixedly connected and are both disposed at the second end of the support member 22, and the second part 33 of the laser cutting head is disposed on the second drive mechanism 31 and is driven by the second drive mechanism 31 to rotate around the second rotating axis; the central axis of the first part 32 of the laser cutting head coincides with the axis of the second rotating axis, and the central axis of the second part 33 of the laser cutting head is perpendicular to the axis of the second rotating axis; the second rotating axis is located above the first rotating axis and is parallel to the first rotating axis; the first part 32 of the laser cutting head can be connected to a laser source, and the second part 33 of the laser cutting head can emit laser light to process the tube. In this design, the first rotating shaft is perpendicular to the feeding direction in the horizontal plane. When using the laser cutting head device of this invention for pipe cutting, the second rotating shaft can be kept stationary while the first rotating shaft remains stationary / does not rotate. The second part 33 of the laser cutting head can then perform conventional straight / bevel cutting. Since the nozzle 331 of the second part 33 is located on the axis of the first rotating shaft, only the first drive mechanism 21 needs to be activated to adjust the bevel angle, eliminating the need for other moving shafts to cooperate. This avoids positioning errors caused by multi-axis linkage and improves the processing accuracy of bevel cutting. When straight cutting the pipe, the second part 33 of the laser cutting head can also swing rapidly around the second rotating shaft with a small amplitude under the drive of the second drive mechanism 31, thereby quickly cutting the pipe along its length within a small range. This, combined with the machine tool feeding mechanism, performs interpolation motion, improving processing efficiency. The improvement is even more pronounced when processing a large number of small-sized graphics. Under normal circumstances, the first and second rotating axes can also operate simultaneously with the vertical motion axis of the machine tool, enabling the laser cutting head device to have independent longitudinal cutting capability for tubes. On the one hand, it can cooperate with the feeding mechanism to improve processing speed; on the other hand, it can reduce the operating distance and number of times the feeding mechanism operates when the load on the feeding mechanism is too high, thereby improving processing efficiency. In addition, the laser cutting head device can also move closer to the clamping point of the tube for cutting, shortening the tail material length. The laser cutting head device of this utility model has the advantages of both high-precision cutting and high-efficiency cutting, and can also reduce tail material waste, enrich the functions of the laser tube cutting machine tool, improve processing quality and output, and effectively solve the problems of poor processing accuracy and slow efficiency of existing laser cutting head devices.

[0029] The first part 32 and the second part 33 of the laser cutting head can be an external integrated laser cutting head, or other types of cutting heads other than "orthogonal optical path single reflection cutting head", such as non-orthogonal optical path single reflection or multiple reflection.

[0030] The coordinate system of the laser tube cutting machine tool is established as follows: the transport direction of the workpiece is the positive Y direction, the vertical upward direction is the positive Z direction, and the positive X direction is determined by the right-hand coordinate system.

[0031] It should be noted that the moving parts of the laser tube cutting machine tool can move along the Z-axis, X-axis, or other directions, thereby driving the laser cutting head to move in the Z-axis, X-axis, or other directions. This allows the laser cutting head to perform processing at the corresponding position on the workpiece. The movement along the Z-axis can adjust the height of the cutting head to adapt to different processing conditions.

[0032] Furthermore, the axis of the support member 22 swinging around the X-axis of the laser tube cutting machine tool is the A1 axis (i.e., the first rotation axis), and the axis of the laser cutting head second part 33 swinging around the X-axis of the laser tube cutting machine tool is the A2 axis (i.e., the second rotation axis). In some embodiments, when the A1 axis, A2 axis, and machine tool Z-axis start to move in tandem, the laser cutting head second part 33 can achieve all degrees of freedom (i.e., 2 translational degrees of freedom and 1 rotational degree of freedom) in the vertical plane of the Y-axis direction. On the one hand, by rotating the A1 axis by +θ angle and the A2 axis by -θ angle, while the machine tool Z-axis moves accordingly, the laser cutting head second part 33 can translate in the -Y direction to a position where the nozzle of the laser cutting head second part 33 is very close to the tube chuck jaws. At this time, straight cutting of the tube can minimize the tail length and reduce material waste. On the other hand, the laser cutting head second part 33 can interpolate the movement of the tube in the Y-axis direction within a large range, which can help improve the cutting speed when processing geometric shapes with a long Y-axis dimension.

[0033] In this embodiment, the rotation range of the first drive mechanism 21 is ±50°; and / or, the rotation range of the second drive mechanism 31 is ±50°. This configuration satisfies the rotation of the second part 33 of the laser cutting head to cut the pipe.

[0034] In some embodiments, the second part 33 of the laser cutting head includes a nozzle 331, which is located at the end of the second part 33. When the first rotating axis is at zero position, the second rotating axis is located directly above the first rotating axis. When the second rotating axis is at zero position, the central axis of the second part 33 of the laser cutting head is located in the plane formed by the first and second rotating axes, and the end of the nozzle 331 is located on the axis of the first rotating axis. This configuration enables conventional straight / bevel cutting of the second part 33 of the laser cutting head. Here, zero position refers to the initial position of the first and second rotating axes.

[0035] In some embodiments, the support member 22 includes a first support plate 211, a second support plate 212, and a third support plate 213. The first support plate 211 is perpendicular to the first drive mechanism 21, and the third support plate 213 is perpendicular to the second drive mechanism 31. The first support plate 211 and the third support plate 213 are at the same angle to the second support plate 212. The support member 22 has a double right-angled Z-shaped structure, and the size of the support member 22 is designed so that the nozzle tip of the second part 33 of the laser cutting head is always on the swing axis of the support member 22.

[0036] Alternatively, in an embodiment not shown in the figure, the support member 22 is an overall double right-angled U-shaped structure.

[0037] In this embodiment, the first driving mechanism 21 includes a first driving motor 221, a reducer 222, and a first flange 223. The first flange 223 is disposed on the base 1. The first driving motor 221 and the reducer 222 are respectively disposed on both sides of the first flange 223. The support member 22 is disposed at the output end of the reducer 222. The input end of the reducer 222 is connected to the output shaft of the first driving motor 221 to drive the support member 22 to rotate, thereby driving the second swing assembly 3 to rotate. With this configuration, the first driving motor 221 drives the reducer 222 to rotate, and the reducer 222 drives the support member 22 to rotate, thereby driving the second swing assembly 3 to rotate.

[0038] Optionally, the first drive motor 221 can be a servo motor or a direct drive motor, and the reducer 222 can be a harmonic reducer or a planetary reducer.

[0039] In some embodiments, the second drive mechanism 31 includes a second drive motor 311 and a second flange 312. The second drive motor 311 is disposed on one side of the second end of the support member 22, and one side of the second flange 312 is disposed on the output shaft of the second drive motor 311, while the other side is provided with the second part 33 of the laser cutting head. By providing the second flange 312, the stability of the connection between the second drive motor 311 and the second part 33 of the laser cutting head can be ensured.

[0040] Furthermore, the second drive motor 311 includes, but is not limited to, a DD motor. The DD motor has a hollow structure, which allows the laser beam to pass from the first part 32 of the laser cutting head through the second drive motor 311 to the second part 33 of the laser cutting head, so as to ensure that the axis of the second rotation shaft coincides with the laser beam path in the first part 32 of the laser cutting head; the DD motor can drive the second part 33 of the laser cutting head to swing. The DD motor is a direct drive motor.

[0041] In this embodiment, the DD motor includes a bearing housing 3111, a bearing body 3112, a stator 3113, and a rotor 3114. The bearing housing 3111 and stator 3113 are both located on one side of the second end of the support member 22. The bearing body 3112 is mounted on the bearing housing 3111, and the rotor 3114 is mounted on the bearing body 3112 and connected to the second flange 312. This configuration allows the stator 3113 and rotor 3114 to drive the second part 33 of the laser cutting head to rotate. Furthermore, the DD motor can drive the second part 33 of the laser cutting head to oscillate rapidly with small amplitudes at high speed.

[0042] In some embodiments, the first part 32 of the laser cutting head further includes a laser fiber interface 321, and the second part 33 of the laser cutting head further includes a laser reflection module 332. The laser beam enters the first part 32 of the laser cutting head from the laser fiber interface 321, is conditioned into a parallel beam, enters the second part 33 of the laser cutting head, is reflected and focused by the laser reflection module 332, and is then emitted from the nozzle 331 to cut the pipe.

[0043] This embodiment also provides a laser tube cutting machine tool, including a machine tool body, a moving component, a laser fiber connector 34, and the laser cutting head device described above. The moving component is mounted on the machine tool body, the laser cutting head device is mounted on the moving component, and the laser fiber connector 34 is connected to the laser fiber interface 321 of the laser cutting head device. Since the laser tube cutting machine tool includes the laser cutting head device described above, it possesses all the advantages of the laser cutting head device, which will not be elaborated further here.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A laser cutting head device, characterized in that, include: The base (1) is a moving component that can be installed on a laser tube cutting machine tool; The first swing assembly (2) includes a first drive mechanism (21) and a support member (22). The first drive mechanism (21) is mounted on the base (1) and connected to the first end of the support member (22) to drive the support member (22) to rotate around a first rotation axis, which is parallel to the horizontal plane. The second swing assembly (3) includes a second drive mechanism (31), a first part (32) of a laser cutting head, and a second part (33) of a laser cutting head. The second drive mechanism (31) and the first part (32) of the laser cutting head are directly or indirectly fixedly connected and are both located at the second end of the support member (22). The second part (33) of the laser cutting head is located on the second drive mechanism (31) and is driven by the second drive mechanism (31) to rotate around the second rotation axis. The central axis of the first part (32) of the laser cutting head coincides with the axis of the second rotation axis, and the central axis of the second part (33) of the laser cutting head is perpendicular to the axis of the second rotation axis. The second rotation axis is located above the first rotation axis and is parallel to the first rotation axis. The first part (32) of the laser cutting head can be connected to a laser source, and the second part (33) of the laser cutting head can emit laser light to process the pipe.

2. The laser cutting head device according to claim 1, characterized in that, The second part (33) of the laser cutting head includes a nozzle (331), which is located at the end of the second part (33) of the laser cutting head; when the first rotating shaft is in the zero position, the second rotating shaft is located directly above the first rotating shaft; When the second rotating shaft is at zero position, the central axis of the second part (33) of the laser cutting head is located in the plane formed by the first rotating shaft and the second rotating shaft, and the end of the nozzle (331) is located on the axis of the first rotating shaft.

3. The laser cutting head device according to claim 1, characterized in that, The rotation range of the first drive mechanism (21) is ±50°; and / or, The rotation range of the second drive mechanism (31) is ±50°.

4. The laser cutting head device according to claim 1, characterized in that, The first drive mechanism (21) includes a first drive motor (221), a reducer (222) and a first flange (223). The first flange (223) is disposed on the base (1). The first drive motor (221) and the reducer (222) are respectively disposed on both sides of the first flange (223). The support member (22) is disposed at the output end of the reducer (222). The input end of the reducer (222) is connected to the output shaft of the first drive motor (221) to drive the support member (22) to rotate, thereby driving the second swing assembly (3) to rotate.

5. The laser cutting head device according to claim 1, characterized in that, The second drive mechanism (31) includes a second drive motor (311) and a second flange (312). The second drive motor (311) is located on one side of the second end of the support member (22), and one side of the second flange (312) is located on the output shaft of the second drive motor (311), and the second part (33) of the laser cutting head is located on the other side.

6. The laser cutting head device according to claim 5, characterized in that, The second drive motor (311) is a DD motor with a hollow structure. The hollow structure allows the laser beam to pass from the first part (32) of the laser cutting head through the second drive motor (311) to the second part (33) of the laser cutting head, so as to ensure that the axis of the second rotating shaft coincides with the laser light path in the first part (32) of the laser cutting head; the DD motor can drive the second part (33) of the laser cutting head to swing.

7. The laser cutting head device according to claim 6, characterized in that, The DD motor includes a bearing housing (3111), a bearing body (3112), a stator (3113), and a rotor (3114). The bearing housing (3111) and the stator (3113) are both located on one side of the second end of the support member (22). The bearing body (3112) is mounted on the bearing housing (3111), and the rotor (3114) is mounted on the bearing body (3112) and connected to the second flange (312).

8. The laser cutting head device according to claim 2, characterized in that, The first part (32) of the laser cutting head also includes a laser fiber interface (321), and the second part (33) of the laser cutting head also includes a laser reflection module (332). The laser beam enters the first part (32) of the laser cutting head from the laser fiber interface (321), is conditioned into a parallel beam and then enters the second part (33) of the laser cutting head. It is reflected by the laser reflection module (332) and further focused before being emitted from the nozzle (331) to cut the pipe.

9. The laser cutting head device according to claim 1, characterized in that, The support member (22) includes a first support plate (211), a second support plate (212) and a third support plate (213). The first support plate (211) is perpendicular to the first drive mechanism (21), and the third support plate (213) is perpendicular to the second drive mechanism (31). The included angles between the first support plate (211), the third support plate (213) and the second support plate (212) are the same.

10. A laser tube cutting machine tool, characterized in that, The device includes a machine tool body, a moving component, a laser fiber connector (34), and a laser cutting head device as described in any one of claims 1-9. The moving component is located on the machine tool body, the laser cutting head device is located on the moving component, and the laser fiber connector (34) is connected to the laser fiber interface (321) of the laser cutting head device.

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