Laser processing apparatus and focusing mechanism thereof

Abstract

The application belongs to the technical field of laser processing, and discloses a laser processing device and a focusing mechanism thereof. The focusing mechanism comprises a mounting frame and at least two focusing members. The mounting frame comprises at least two mounting holes arranged in the mounting frame along the length direction of the mounting frame. Each focusing member is detachably arranged in the corresponding mounting hole, and each focusing member is provided with a focusing position. The laser processing device comprises a laser processing head with a focusing optical member and a mounting mechanism for detachably mounting the laser processing head. The focusing mechanism is used for pre-focusing the laser processing head of the laser processing device. The predetermined optical axis position of the focusing optical member in the laser processing head is adjusted by adjusting the straight line where the connecting lines of the focusing positions are located, so as to obtain the target mounting position and the target mounting angle of the laser processing head. Therefore, the laser processing head can be simulated by the focusing mechanism for pre-focusing, which is convenient to operate and accurate in focusing, and is beneficial to improving the processing efficiency and the yield of the laser processing device.

Description

Technical Field

[0001] This application relates to the field of laser processing technology, and in particular to a laser processing device and its focusing mechanism. Background Technology

[0002] In related technologies, laser processing equipment is equipped with a mounting mechanism on which a laser processing head is mounted. The laser beam is received and focused using optical components such as a focusing lens. Focusing is achieved by adjusting the position of the laser beam and the laser processing head to align the focal point onto the workpiece to be processed, thus performing laser processing. However, in practical applications, after mounting the laser processing head onto the laser processing equipment's mounting mechanism, the adjustment effect of the laser beam is difficult to confirm during focusing, leading to focusing difficulties and making it hard to accurately focus on the workpiece, thus affecting processing efficiency and quality. Utility Model Content

[0003] In order to overcome the problems existing in the prior art, the main objective of this application is to provide a laser processing equipment and its focusing mechanism.

[0004] To achieve the above objectives, this application specifically adopts the following technical solution: According to a first aspect of the present application, a focusing mechanism for a laser processing apparatus is provided. The laser processing apparatus includes a laser processing head having focusing optics and a mounting mechanism for detachably mounting the laser processing head. The focusing mechanism is used to pre-focus the laser processing head of the laser processing apparatus, and the focusing mechanism includes: The mounting bracket includes at least two mounting holes spaced apart along the length of the mounting bracket; the mounting bracket is configured to be detachably and / or adjustably mounted on the mounting mechanism; At least two focusing components, each of which is detachably arranged in the corresponding mounting hole; Each of the focusing components is provided with a focusing position, and the predetermined optical axis position of the focusing optics in the laser processing head is adjusted by adjusting the straight line connecting the focusing positions.

[0005] Optionally, the laser processing head is a Bezier cutting head.

[0006] Optionally, at least one observation window is arranged on the outer wall of the mounting frame, the observation window exposing the focusing position for observing the position of the spot formed by the laser beam at the focusing position.

[0007] Optionally, the mounting frame includes at least two frames, one end of each frame is provided with the mounting hole, and the other end of each frame is provided with the mounting hole or a connector, the connector being used for detachable connection and / or sliding connection between the at least two frames.

[0008] Optionally, each of the focusing components includes a base and a focusing portion, the base being coupled to the mounting hole, the focusing portion being disposed in the central region of the base, and the focusing position being formed on the focusing portion.

[0009] Optionally, the base is configured as a hollow column, the focusing portion extends towards the center along the inner peripheral wall of the column, and the focusing position is located at the center of the focusing portion.

[0010] Optionally, the focus position is configured to include the following features: The focusing portion includes at least two ribs that extend along the inner peripheral wall of the columnar body toward the center of the base, and meet at the center of the base to form the focusing position; or... The focusing portion includes at least two ribs that extend along the inner peripheral wall of the columnar body toward the center of the base, meeting at the center of the base to form the focusing position. The at least two ribs are arranged in a cross or star shape; or... The focusing portion includes at least two ribs extending along the inner peripheral wall of the columnar body towards the center of the base, and meeting at the center of the base to form the focusing position; at the position where the at least two ribs meet, the focusing portion has a light-transmitting hole along the height direction of the base, the light-transmitting hole being configured to allow a laser beam to pass through, and the location of the light-transmitting hole is the focusing position; or... The focusing section is constructed as an annular plate including a central light-transmitting aperture, and the focusing position is located at the central light-transmitting aperture.

[0011] Optionally, the at least two focusing elements include a first focusing element and a second focusing element, wherein the position of the first focusing element on the mounting bracket is equivalent to the position of the focusing optics at one end of the laser processing head, and the position of the second focusing element on the mounting bracket is equivalent to the position of the focusing optics at the other end of the laser processing head.

[0012] Optionally, the at least two focusing elements further include a third focusing element, which is located between the first focusing element and the second focusing element, and the focusing positions of the third focusing element, the first focusing element, and the second focusing element are located on the same straight line.

[0013] According to a second aspect of the embodiments of this application, a laser processing apparatus is also provided, the laser processing apparatus comprising a laser, a laser processing head, a laser beam transmission and control mechanism, and an installation mechanism, wherein, The laser is used to emit a laser beam; The laser processing head is used to focus the laser beam onto the workpiece for laser processing, and the laser processing head includes at least one focusing optics; The mounting mechanism includes a base frame and an adjustment component. The base frame is configured to detachably mount the laser processing head or the aforementioned focusing mechanism. The adjustment component is configured to adjust the mounting position and / or mounting angle of the laser processing head or the focusing mechanism on the base frame. The laser beam transmission and control mechanism is configured to control the initial position of the laser beam projected onto the laser processing head or the focusing mechanism. The focusing mechanism simulates the laser processing head being mounted on the mounting mechanism. The laser beam is pre-focused by the adjusting component and / or the laser beam transmission and control mechanism to obtain the target mounting state and then removed from the laser processing equipment to replace the laser processing head for mounting. And / or, the mounting mechanism has a mounting position configured for switching mounting of the Bezier head and the focusing mechanism; And / or, the adjustment component includes a coarse adjustment component and a fine adjustment component; And / or, the transmission and control mechanism includes at least one of an aperture, a shaping mechanism, a beam expander, a reflector, and a beam splitter.

[0014] The laser processing equipment and its focusing mechanism provided in this application have at least the following beneficial effects: Laser processing equipment can pre-focus the laser processing head through a focusing mechanism. In application, the focusing mechanism can be installed on the mounting mechanism. By adjusting the straight line connecting the focusing positions of at least two focusing elements, the predetermined optical axis can be adjusted. After removing the focusing mechanism from the mounting mechanism and replacing it with the laser processing head, the predetermined optical axis obtained by adjusting the focusing elements can be used as the predetermined optical axis of the focusing optics of the laser processing head. Therefore, by simulating the laser processing head through the focusing mechanism, before actual processing, adjusting the straight line connecting the focusing positions can help confirm the incident state and adjustment effect of the laser beam, thereby quickly obtaining the predetermined optical axis position of the focusing optics and confirming the target installation state of the laser processing head, thus achieving pre-focusing of the laser processing head. After pre-focusing, the focusing mechanism can be removed from the mounting mechanism and replaced with the laser processing head for formal focusing processing. The operation is convenient and the focusing is accurate, which helps to improve processing efficiency and processing quality. Attached Figure Description

[0015] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application or corresponding prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a three-dimensional structural schematic diagram of a laser processing device in one example of this application; in this figure, the focusing mechanism replaces the laser processing head and is installed in the mounting position; Figure 2 This is a three-dimensional structural schematic diagram of a laser processing device in one example of this application; in this diagram, the laser processing head is mounted in the mounting position; Figure 3 This is a three-dimensional structural schematic diagram of the focusing mechanism in one example of this application; Figure 4 yes Figure 3 Exploded view of the central focusing mechanism; Figure 5 This is a three-dimensional structural schematic diagram of a focusing component in one example of this application; in this figure, the rib and the base are integrally formed; Figure 6 This is a three-dimensional structural schematic diagram of a focusing component in another example of this application; the focusing component in this figure is based on Figure 5 The focusing component in the middle has a light-transmitting hole at the intersection position; Figure 7 This is a three-dimensional structural schematic diagram of a focusing component in another example of this application; in this figure, the rib is inserted into the base; Figure 8 This is a three-dimensional structural schematic diagram of a focusing component in another example of this application; in this figure, a light-transmitting hole is directly opened at the center of the base to serve as the focusing part.

[0016] The labels in the attached diagram are as follows: 1000. Laser processing equipment; 100. Focusing mechanism; 200. Mounting mechanism; 210. Mounting position; 220. Mounting component; 230. Locking component; 240. Base frame; 250. Adjustment component; 251. Adjustment plate; 252. Fine-tuning component; 253. Coarse-tuning component; 300. Laser processing head; 310. Focusing optics; 1. Mounting frame; 11. First frame body; 111. First positioning hole; 112. Third positioning hole; 12. Second frame body; 121. Second positioning hole; 122. Mounting slot; 123. Observation window; 2. Focusing component; 21. Base; 211. Space; 22. Focusing part; 221. Focusing position; 222. Rib; 223. Light passage hole; 23. First focusing component; 24. Second focusing component; 25. Third focusing component. Detailed Implementation

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terms used in this specification are for the purpose of describing particular embodiments only and are not intended to limit the present application. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are for ease of description only, and should not be construed as limiting the present technical solution.

[0018] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a particular order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0019] In the description, claims, and accompanying drawings of this application, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element. When the term "and / or" is used, it means including three parallel options; for example, "option A and / or option B" includes option A, or option B, or options that satisfy both A and B simultaneously.

[0020] Furthermore, the terms "embodiment," "implementation," "example," etc., used herein refer to specific features, structures, or characteristics described in connection with an embodiment that may be included in at least one embodiment of this application. These phrases appearing in various places throughout the specification do not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] This application provides a laser processing device 1000 and its focusing mechanism 100. Please refer to the following embodiments. Figure 1 and Figure 2 The laser processing equipment 1000 includes a laser processing head 300 and an installation mechanism 200.

[0022] The laser processing head 300 has a focusing optics 310 for focusing the incident laser beam. The mounting mechanism 200 is used for detachable mounting of the laser processing head 300 to facilitate its installation and removal. The mounting mechanism 200 is also used for detachable mounting of the focusing mechanism 100. After the laser processing head 300 is removed from the mounting mechanism 200, the focusing mechanism 100 can be installed on the mounting mechanism 200. The focusing mechanism 100 is used to pre-focus the laser processing head 300 of the laser processing equipment to determine the target installation state of the laser processing head 300 (e.g., target installation position, target installation angle). After pre-focusing is completed, the focusing mechanism 100 can be removed from the mounting mechanism 200, and then the laser processing head 300 can be installed on the mounting mechanism 200. This allows the laser processing head 300 to be quickly installed on the mounting mechanism 200 and achieve the target state (e.g., target position, target angle), realizing rapid focusing.

[0023] The focusing mechanism 100 can be applied to the focus adjustment of the laser beam in the laser processing equipment 1000. Of course, it can also be applied to other suitable application scenarios to pre-focus the laser processing head 300 of the laser processing equipment, which will not be described in detail here.

[0024] It is understandable that laser processing equipment may also include a laser, a laser beam transmission and control mechanism.

[0025] The laser is used to emit a laser beam, and the laser beam transmission and control mechanism is configured to control the initial position of the laser beam projected onto the laser processing head 300 or the focusing mechanism 100, thereby adjusting the incident position and / or incident angle so that the transmission direction of the laser beam can be incident on the incident range of the focusing optics 310 of the laser processing head 300.

[0026] Please refer to Figure 1 and Figure 2The mounting mechanism 200 may include a base frame 240 and an adjustment component 250. The base frame 240 is adapted to be mounted on a laser processing equipment. For example, the laser processing equipment may have a connecting part for connecting the base frame 240, and the base frame 240 may be connected to the connecting part. The base frame 240 is configured to detachably mount the laser processing head 300 or the focusing mechanism 100. The adjustment component 250 is configured to adjust the mounting position and / or mounting angle of the laser processing head 300 or the focusing mechanism 100 on the base frame 240. The focusing mechanism 100 simulates the detachable mounting of the laser processing head 300 on the mounting mechanism 200. The laser beam is pre-focused by the adjustment component 250 and / or the laser beam transmission and control mechanism to obtain the target mounting state (e.g., target mounting position, target mounting angle), and then removed from the laser processing equipment to replace it for mounting the laser processing head 300. This ensures that the laser processing head 300 is in the target mounting state (e.g., target mounting position, target mounting angle) after being mounted on the base frame 240.

[0027] The laser processing head 300 may include at least one focusing optics 310 for focusing the laser beam, thereby concentrating the energy into a small spot with high energy density for processing workpieces.

[0028] In another embodiment, the laser processing head 300 may include at least two focusing optics 310, which are arranged at intervals along the length of the laser processing head 300. At least one focusing optic is used to focus the laser beam, thereby concentrating the energy into a small spot with high energy density for processing workpieces.

[0029] Among them, two focusing optics 310 (e.g., focusing lenses) are movable to dynamically adjust the focal length, forming a combination of plano-convex lenses. The two lenses are moved synchronously by a drive mechanism (e.g., a servo motor) to change the focal position, thereby maintaining focal consistency on three-dimensional curved surfaces or workpieces with complex shapes.

[0030] Taking the cutting of a workpiece with a three-dimensional curved surface by a laser processing head 300 as an example, after focusing, the laser processing head 300 focuses to form a light spot suitable for cutting. During the cutting process along the three-dimensional curved surface, the distance between some positions on the cutting path and the laser processing head 300 may change (increase or decrease) because the cutting path follows the three-dimensional curved surface. If the focal position remains unchanged, some positions may deviate from the focal point during the cutting process, thus affecting the cutting effect. Therefore, when the laser processing head 300 includes two focusing optics 310, the focal length can be dynamically adjusted by driving the two focusing optics 310 to move during the cutting process. This allows the focal position to be adjusted according to the cutting path, ensuring consistency of the focal point at each position during the cutting process and thus guaranteeing the cutting effect.

[0031] Understandably, for other, more complex curved surfaces, the focusing optics 310 can be configured as needed, not limited to one or two.

[0032] Please refer to Figure 1 and Figure 2 It is understood that the focusing mechanism 100 may include a mounting bracket 1 and at least two focusing elements 2.

[0033] Mounting bracket 1 includes at least two mounting holes spaced apart along its length. Each focusing element 2 is detachably arranged in its corresponding mounting hole; therefore, the focusing elements 2 are also spaced apart along the length of mounting bracket 1. Mounting bracket 1 is configured to be detachably and / or adjustablely mounted on mounting mechanism 200, facilitating the installation and removal of focusing mechanism 100 from mounting mechanism 200 for replacement with laser processing head 300.

[0034] Each focusing element 2 is provided with a focusing position 221. The predetermined optical axis position of the focusing optics 310 in the laser processing head 300 is adjusted by adjusting the straight line connecting the focusing positions 221. The predetermined optical axis position of the focusing optics 310 can be understood as the optical axis position of the focusing optics 310 after the laser processing head 300 is installed in the mounting position 210. The optical axis position of the focusing optics 310 determines the focusing direction of the beam. Therefore, in application, the focusing mechanism 100 can be installed on the mounting mechanism 200. The predetermined optical axis is adjusted by adjusting the straight line connecting the focusing positions 221 of at least two focusing elements 2 through the laser beam transmission and control mechanism and / or the adjustment component of the mounting mechanism. After the focusing mechanism 100 is removed from the mounting mechanism 200 and replaced with the laser processing head 300, the predetermined optical axis obtained by adjusting the focusing element 2 can be used as the predetermined optical axis of the focusing optics 310 of the laser processing head 300.

[0035] Therefore, by simulating the laser processing head 300 through the focusing mechanism 100, the incident state and adjustment effect of the laser beam can be confirmed by adjusting the straight line connecting the focusing positions 221 before actual processing. This allows for the rapid acquisition of the predetermined optical axis position of the focusing optics 310 and confirmation of the target installation state (target installation position and / or target installation angle) of the laser processing head 300, thus achieving pre-focusing of the laser processing head 300. After pre-focusing, the focusing mechanism 100 is removed from the mounting mechanism 200 and replaced with the laser processing head 300 for formal focusing processing. This method is convenient to operate, accurate in focusing, and helps to improve processing efficiency and quality.

[0036] For example, please see Figure 1 and Figure 2The adjusting component 250 may include an adjusting plate 251, a fine-tuning component 252, and a coarse-tuning component 253. The adjusting plate 251 is mounted on the base frame 240 via the fine-tuning component 252 and the coarse-tuning component 253. The mounting mechanism 200 may also include a fixing assembly for mounting the focusing mechanism 100 or the laser processing head 300. The fixing assembly is mounted on the adjusting plate 251. Understandably, by adjusting the fine-tuning component 252 and the coarse-tuning component 253, the mounting position and / or mounting angle of the adjusting plate 251 relative to the base frame 240 can be adjusted, thereby adjusting the mounting position and / or mounting angle of the fixing assembly mounted on the adjusting plate 251 and the laser processing head 300 mounted on the fixing assembly.

[0037] The fine-tuning component 252 and the coarse-tuning component 253 can employ a screw structure to adjust the position of the adjusting plate 251. For example, the fine-tuning component 252 may include multiple fine-tuning screws, and the coarse-tuning component 253 may include multiple coarse-tuning screws. The fine-tuning screws and coarse-tuning screws are connected to the adjusting plate 251 and the base frame 240 through their respective matching threaded holes. Thus, the thread pitch of the coarse-tuning screw is greater than that of the fine-tuning screw, allowing for larger-amplitude coarse adjustments, while the fine-tuning screws allow for smaller-amplitude adjustments. Multiple fine-tuning screws are spaced apart around the fixed assembly, and multiple coarse-tuning screws are also spaced apart around the fixed assembly. Therefore, by adjusting the coarse-tuning screws and / or fine-tuning screws at different positions, the angle of the adjusting plate 251 can be adjusted in the corresponding direction. Thus, the coordinated operation of the fine-tuning component 252 and the coarse-tuning component 253 allows for fine-tuning and / or coarse-tuning of the installation position and angle of the laser processing head 300.

[0038] It is understandable that various other structural forms can be used to fine-tune and / or coarsely adjust the installation position and angle of the laser processing head 300. For example, a slide rail guide structure can be connected between the adjustment plate 251 and the base frame 240. By reasonably configuring the slide rail direction, the required direction of movement adjustment can be achieved, thereby adjusting the position of the adjustment plate 251. Angle adjustment can be achieved through a rotation adjustment structure, and coarse and fine adjustments can be achieved by controlling the adjustment accuracy. Alternatively, a multi-degree-of-freedom adjustment mechanism can be set up to allow the adjustment plate 251 to be flexibly adjusted in the X, Y, and Z axis directions and tilt angle. Other feasible structural forms can also be used, which will not be elaborated here.

[0039] It should be noted that the adjustment component 250 can adopt an existing or newly created structure, and no particular limitation is made here. Furthermore, the laser processing head 300 can be a Bezier cutting head. The laser beam entering the Bezier cutting head can form a Bezier beam. Compared with a traditional Gaussian beam, the Bezier beam has the characteristics of no diffraction, strong self-healing ability, long focal depth, and stable power density, resulting in better processing stability. Moreover, the workpieces to be processed here include, but are not limited to, transparent substrates and thick substrates, such as glass substrates, PCB boards, and plastic sheets. The laser processing head 300 can perform processing on the workpiece, including cutting and drilling.

[0040] It should be noted that the focusing optics 310 includes, but is not limited to, a focusing lens. Taking the focusing optics 310 as a focusing lens as an example, the focusing principle of the laser processing head 300 is roughly as follows: After the controlled laser beam is focused by the focusing lens of the laser processing head 300, it will converge to the focal point on the optical axis of the laser beam. If the optical axis position of the laser beam is offset when it is incident, it will easily cause the focal point position of the laser beam on the workpiece to also be offset. After the laser processing head 300 is installed in the mounting mechanism 200, it is difficult to confirm the incident situation of the laser beam through the focusing lens. If the incident position and / or angle of the laser beam is not good, it will be difficult to achieve accurate focusing of the laser processing head 300 by adjusting the mounting mechanism 200. By using the focusing mechanism 100 of this application embodiment to adjust the predetermined optical axis position of the focusing optics 310, it is convenient to confirm the incident state of the laser beam, thereby facilitating the determination of the target installation state of the laser processing head 300 (such as the target installation position and target installation angle). This ensures that after being replaced with the laser processing head 300, the laser processing head 300 and the incident laser beam are in the correct relative position or angle, so that the incident laser beam can be accurately focused on the processing position of the workpiece after being focused by the laser processing head 300.

[0041] Please refer to Figure 1 and Figure 2 It is understood that the mounting mechanism 200 has a mounting position 210, which is configured to allow for the interchangeable mounting of the laser processing head 300 and the focusing mechanism 100. Both the laser processing head 300 and the focusing mechanism 100 can be detachably mounted to the mounting position 210 of the mounting mechanism 200. The focusing mechanism 100 can be used to focus the incident laser beam to simulate pre-focusing of the laser processing head 300. After the focusing mechanism 100 has completed focusing, the laser processing head 300 can be mounted to the mounting position 210 of the mounting mechanism 200 for precise laser processing of the workpiece.

[0042] For example, please see Figure 1 and Figure 2The mounting mechanism 200 includes a fixing component connected to the adjusting component 250. The fixing component may include a mounting member 220 and a locking member 230. The mounting member 220 is mounted on the adjusting plate 251, and the locking member 230 is connected to the mounting member 220 and together encloses a limiting through hole (not shown in the figure, corresponding to mounting position 210) along the length direction of the laser processing head 300. The limiting through hole is the aforementioned mounting position 210. The focusing mechanism 100 can be limited and inserted into the limiting through hole, with both ends exposed. Similarly, after the focusing mechanism 100 is removed, the laser processing head 300 can also be limited and inserted into the limiting through hole to be installed in the same mounting position as the focusing mechanism 100. This facilitates the simulation of the laser processing head 300 by the focusing mechanism 100 to pre-focus the laser processing head 300.

[0043] It should be noted that the locking member 230 can be rotatably connected to the mounting member 220, or can be detachably connected to the mounting member 220, or can be other suitable connection methods. No particular limitation is made here, as long as the mounting position 210 formed between the two can be switched between the focusing mechanism 100 and the laser processing head 300 and installed in the same position.

[0044] Please refer to Figure 1 and Figure 2 In order to enable the focusing mechanism 100 to focus the incident laser beam, the mounting bracket 1 of the focusing mechanism 100 is detachably mounted on the mounting position 210, so that the focusing mechanism 100 is detachably mounted on the mounting position 210 of the mounting mechanism 200.

[0045] Please refer to Figure 2 and Figure 3 At least two focusing elements 2 are provided, and each focusing element 2 is spaced apart on the mounting frame 1 along its length. Each focusing element 2 has a focusing position 221, and all focusing positions 221 are on the same line. Thus, based on the principle that two points determine a straight line, by adjusting the incident laser beam to pass through the focusing positions 221 on at least two focusing elements 2, and adjusting the relative position of the laser beam and / or the mounting mechanism 200 according to the position of the laser spot optical axis transmitted through the focusing positions 221, the laser spot optical axis is made to pass through the focusing positions 221 of at least two focusing elements 2, thereby determining the predetermined optical axis of the focusing optics 310. This ensures that when the laser processing head 300 is mounted on the adjusted mounting mechanism 200, the optical axis of the laser beam entering the focusing optics 310 is at the predetermined optical axis position, which helps to ensure that the laser beam can be focused to the designated processing position of the workpiece.

[0046] Additionally, the focusing mechanism 100 is configured to replace the Bessel laser processing head 300 in the mounting position 210, and to adjust the mounting position and / or mounting angle of the mounting mechanism 200 in the mounting position 210 by means of the adjusting component 250, so that the incident laser beam passes through each focusing position 221 to obtain the target mounting position and target mounting angle when the laser processing head 300 is mounted in the mounting position 210. Understandably, by installing the focusing mechanism 100 onto the mounting position 210 for mounting the laser processing head 300, the focusing mechanism 100 directly simulates the laser processing head 300. The focusing element 2 of the focusing mechanism 100 simulates the mounting position of the focusing optics 310 on the mounting path of the focusing optics 310. The mounting position and / or mounting angle of the focusing mechanism 100 are adjusted by the adjusting component 250 of the laser processing head 300. By adjusting the mounting position and mounting angle of the mounting mechanism 200, the incident laser beam passes through the focusing position 221 of each focusing element 2 and exits to the designated processing position of the test piece to be processed. In this way, the target mounting position and target mounting angle when the Bezier processing head is mounted on the mounting position 210 can be simulated.

[0047] For example, the focusing principle of the focusing mechanism 100 is roughly as follows: Please refer to Figure 1 The focusing mechanism 100 can be installed on the mounting position 210 of the mounting mechanism 200. First, the initial position of the laser beam projected onto the focusing mechanism 100 can be adjusted by the laser beam transmission and control mechanism, so that the laser beam can be incident on the focusing position 221 of the focusing element 2 for observation. Then, the fine-tuning component 252 and coarse-tuning component 253 of the adjustment component 250 are adjusted to adjust the mounting position and / or mounting angle of the adjustment plate 251 relative to the base frame 240, so that the incident laser beam can pass through the focusing positions 221 of each focusing element 2 of the focusing mechanism 100. 1. This determines the connection line of the focusing positions 221 of each focusing element 2, which can be determined as the predetermined optical axis of the focusing optics 310. This ensures that when the laser processing head 300 is installed on the adjusted mounting mechanism 200, the optical axis of the focusing optics 310 is at the predetermined optical axis position. Therefore, it can be ensured that the incident laser beam pre-adjusted through each focusing position 221 can be focused by the focusing optics 310 to the designated processing position of the workpiece. In this way, the focusing mechanism 100 simulates the laser processing head 300 and realizes the pre-focusing of the laser processing head 300.

[0048] After the mounting mechanism 200 and adjusting component 250 have completed the installation position and / or installation angle adjustment of the focusing mechanism 100, remove the focusing mechanism 100 from the mounting position 210. Please refer to [link / reference]. Figure 2The laser processing head 300 is installed in the mounting position 210 of the mounting mechanism 200 that has been focused. In other words, the laser processing head 300 and the focusing mechanism 100 are switched to the same position. This allows the laser processing head 300 to be installed in the target mounting position and target mounting angle on the mounting mechanism 200, so that the optical axis of the focusing optics 310 of the laser processing head 300 can ensure that the incident laser beam is focused on the designated processing position of the workpiece.

[0049] By adjusting the size of the laser beam spot, some light rays can be directed onto the focus position 221, while others can pass through the focus position 221 and continue to illuminate the rear. Therefore, by observing the distribution of light rays behind the focus position 221, it can be determined whether the laser beam accurately passes through each focus position 221, thus verifying the correctness of the relative position and angle between the laser beam and the mounting mechanism 200.

[0050] Understandably, in application, the focusing mechanism 100 can be detachably mounted to the mounting position 210 of the mounting mechanism 200 on which the laser processing head 300 is mounted. At least two focusing elements 2 of the focusing mechanism 100 are located on the mounting path of the focusing optics 310 of the laser processing head 300. The mounting position and / or mounting angle of the mounting mechanism 200 and the focusing mechanism 100 mounted on the mounting mechanism 200 are adjusted by the adjusting component 250 for adjusting the mounting position and / or mounting angle of the laser processing head 300, so that the laser processing head 300 is mounted on the laser processing head 300. The laser beam can be pre-focused by the focusing positions 221 of each focusing element 2 of the focusing mechanism 100, thereby simulating the laser processing head 300. After focusing, the predetermined optical axis position of the laser processing head 300 to be installed can be determined according to the connection of the focusing positions 221 of the focusing element 2 (which can be understood as the optical axis position of the focusing optics 310 after the laser processing head 300 is installed at the mounting position 210). The target mounting position and target mounting angle of the laser processing head 300 can be obtained by corresponding to the current mounting position and mounting angle of the mounting mechanism 200.

[0051] After the focusing mechanism 100 is removed, the laser processing head 300 is installed on the mounting position 210 of the mounting mechanism 200 after focusing. This allows the laser processing head 300 to be in the target mounting position and target mounting angle, and the optical axis of the focusing optics 310 of the laser processing head 300 to be located at the predetermined optical axis position determined by pre-focusing. The incident laser beam determined by the pre-focusing mechanism 100 can be focused by the focusing optics 310 to the designated processing position of the test piece to be processed, thereby achieving the focusing of the laser processing head 300 and ensuring that the laser processing head 300 can focus the laser beam to the designated processing position of the test piece after being installed on the mounting mechanism 200.

[0052] Overall, the focusing mechanism 100 obtains the target installation position and target installation angle of the laser processing head 300 by simulating the laser processing head 300 and by coordinating the mounting mechanism 200 and adjustment components 250 of the laser processing head 300. It is not only simple and reliable in structure, but also requires minimal structural modification to the existing laser processing equipment 1000, and can quickly complete the focusing adjustment of the incident laser beam and the laser processing head 300.

[0053] To enable those skilled in the art to better understand the present application, the following will be discussed in conjunction with the appendix. Figures 1 to 8 The technical solutions in the embodiments of this application are clearly and completely described. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0054] Please refer to Figure 1 and Figure 2 It is understood that at least one observation window 123 is arranged on the outer wall of the mounting frame 1. The observation window 123 exposes the focusing position 221 of the focusing component 2, which is used to observe the position of the light spot formed by the laser beam on the focusing position 221. This makes it easier to determine whether the laser beam is accurately aligned with the focusing position 221, and thus makes it easier to adjust the incident position and / or angle of the laser beam, improving the convenience of operation.

[0055] Please refer to Figure 1 and Figure 3 As an example, the mounting bracket 1 may include a hollow cylindrical body through which a laser beam can pass. The cylindrical body has mounting holes spaced along its length for mounting the focusing element 2. The focusing element 2 is coupled to the mounting holes. The cylindrical body effectively ensures structural strength, thereby guaranteeing the stability of the mounting position of the focusing element 2. Furthermore, the cylindrical body has a similar structural form to the housing of the laser processing head 300, effectively simulating the installation state of the laser processing head 300 and the mounting mechanism 200, as well as the installation state of the focusing optics 310 inside the laser processing head 300 and its housing. Observation windows 123 are provided on one or both sides of the mounting holes along the axial direction of the cylindrical body. The observation windows 123 penetrate the wall of the cylindrical body, thus connecting its internal space, allowing the mounting holes to be exposed through the observation windows 123. Therefore, the focusing position 221 of the focusing element 2 mounted in the mounting holes can be observed through the observation windows 123. Specifically, observation windows 123 can be opened on one or both sides of each mounting hole. One observation window 123 can be set around the circumference of the mounting hole, or two, three or more observation windows 123 can be set along the circumference. Increasing the number of observation windows 123 makes it easier to observe the focusing element 2 from different angles and facilitates rapid adjustment.

[0056] As another example, the mounting frame 1 may also include at least two connecting rings and at least two connecting rods. The connecting rods are arranged in parallel, and the connecting rings are spaced apart along the length of the connecting rods. Each connecting ring is connected to two connecting rods. The connecting rings are provided with mounting holes for mounting the focusing element 2. Observation windows 123 are formed between the connecting rods at intervals. Observation windows 123 are formed between any adjacent connecting rods. The mounting holes can be exposed through any observation window 123, so that the focusing position 221 of the focusing element 2 mounted in the mounting hole can be observed through the observation window 123. Compared with the aforementioned cylindrical body example, this example can form a more open structure, which is easier to observe. The mounting frame 1 may also include a connecting seat, and each connecting rod is connected to the connecting seat. The connecting seat is offset from the connecting ring and is detachably connected to the mounting mechanism 200 through the connecting seat, thereby realizing the detachable installation of the focusing mechanism 100.

[0057] It is understood that the above examples are merely illustrative. In actual implementation, other structural forms can be used to arrange the observation window 123 on the mounting frame 1, so that the focusing position 221 of the focusing element 2 can be exposed through the observation window 123. Alternatively, part or all of the mounting frame 1 can be configured with a transparent material, so that the focusing position 221 of the focusing element 2 can be observed from the outside, thereby facilitating focusing and observation.

[0058] Please refer to Figures 5 to 8In one possible implementation, each focusing component 2 of the focusing mechanism 100 may include a base 21 and a focusing part 22. The base 21 is coupled to the mounting hole on the mounting bracket 1. The coupling method includes, but is not limited to, detachable connections such as limiting support, threaded connection, snap-fit ​​connection, magnetic connection, or fixed connections such as adhesive bonding or riveting. For example: When using a limiting and holding mechanism, the base 21 is placed inside the mounting hole. The inner wall of the mounting hole, below the base 21, can be provided with a support portion for supporting the mounting hole. The support portion is in the form of a continuous annular convex ring or multiple spaced protrusions, so that the base 21 can be axially held against the mounting hole and not fall downwards. The wall of the mounting hole circumferentially limits the outer wall of the base 21 to prevent the base 21 from radially shaking. When using a threaded connection, the base 21 can be provided with external threads, and the mounting hole can be provided with internal threads. The base 21 is adjustablely installed in the mounting hole by engaging with the threaded connection. When using a snap-fit ​​connection, one of the base 21 and the wall of the mounting hole is provided with a hook, and the other... The base 21 is provided with a slot, and is detachably installed in the mounting hole by engaging with the slot via a hook. In the case of magnetic connection, the base 21 and the wall of the mounting hole are respectively provided with magnetic components such as magnets, or one of the base 21 and the wall of the mounting hole is made of magnetic metal, while the other is provided with magnetic components such as magnets, and the base 21 is detachably installed in the mounting hole by magnetic attraction. In the case of adhesive bonding, adhesive is filled between the base 21 and the wall of the mounting hole, or double-sided tape is attached. In the case of riveting, the outer wall of the base 21 may have a riveting part, and the base 21 is at least partially located inside the mounting hole and fits against the wall of the mounting hole. The riveting part is riveted to the portion of the mounting frame 1 surrounding the edge of the mounting hole. The coupling of the base 21 with the mounting hole positions or fixes the focusing component 2 to the mounting frame 1, preventing shaking during adjustment and improving the accuracy of the focusing mechanism 100 adjustment.

[0059] The focusing section 22 is located at the center of the base 21, and the focusing section 22 has a focusing position 221. Understandably, each focusing position 221 is located at the center of the corresponding focusing element 2. This simplifies the overall structure of the focusing mechanism 100 and makes it more compact, while also ensuring the focusing accuracy of the focusing element 2 and facilitating the rapid passage of the incident laser beam through each focusing position 221.

[0060] It should be noted that the structure and size of the base 21 of each focusing element 2 may be the same or different. Similarly, the specific structure and size of the focusing part 22 of each focusing element 2 may be the same or different. No particular limitations are made here regarding the base 21 and focusing part 22 of each focusing element 2; they can be determined according to actual needs. Generally, it is only necessary to ensure that the focusing position 221 of each focusing element 2 is located at the center of the base 21, and that each focusing position 221 is located on the same straight line.

[0061] For example, to simplify the structure of the focusing mechanism 100 and ensure focusing accuracy, please refer to... Figure 3 and Figure 4 The focusing components 2 of the focusing mechanism 100 have the same structure and size.

[0062] Please refer to Figures 5 to 7 In one possible implementation, to simplify the overall structure of the focusing mechanism 100 and ensure the focusing accuracy of the focusing element 2, and to facilitate observation of the alignment of the incident laser beam with the focusing positions 221 of each focusing element 2, the base 21 of each focusing element 2 is a hollow columnar body, with the focusing part 22 located in the hollow portion of the base 21. The focusing part 22 extends towards the center along the inner peripheral wall of the columnar body, and the focusing position 221 is located at the center of the focusing part 22, facilitating the precise alignment of the focusing positions 221 of all focusing elements 2 on the same straight line. This allows for adjustment using the focusing part 22 as a reference during pre-focusing, ensuring that the laser beam can be accurately focused at the predetermined position. The hollow columnar design of the base 21 forms a clear hollow structure around the focusing part 22, facilitating the display of the optical axis position of the laser spot transmitted through it, and allowing the operator and / or automatic optical recognition equipment to observe the alignment of the incident laser beam with the focusing position 221.

[0063] The focusing section 22 includes at least two ribs 222, which extend along the inner peripheral wall of the columnar body towards the center of the base 21 and meet at the center of the base 21 to form a focusing position 221. Furthermore, to improve the structural robustness of the focusing section 22 of the focusing member 2, one end of each of the at least two ribs 222 is connected to the base 21. Understandably, the at least two ribs 222 cross and meet at the hollow portion at the center of the base 21, or are connected by other components, wherein the position where the at least two ribs 222 meet is the focusing position 221 of the focusing member 2. Further understandably, the specific structure of the base 21 can be determined according to actual needs, as long as it satisfies the requirement of forming a focusing position 221 for aligning the incident laser beam in the hollow portion at the center of the base 21.

[0064] It should be noted that the focusing position 221 can be a real part, such as the intersecting part of multiple ribs 222, or it can be a virtual part, such as a light-transmitting hole 223 (e.g., Figure 6 or Figure 8 (as shown), etc., are not specifically limited here.

[0065] When the focusing portion 22 includes at least two ribs 222, in order to connect the at least two ribs 222 at the center position of the base 21 to form the focusing position 221, at least the following specific embodiments are available: In the first specific implementation, please refer to Figure 5The rib 222 is integrally formed with the base 21. For example, multiple spaces 211 can be directly formed on the base 21 along its axial direction to form at least two ribs 222 at the middle position of the base 21. The ribs 222 can be separated by the spaces 211 to form a hollow structure in the base 21, and the focusing position 221 is located in the hollow part of the base 21.

[0066] In addition, at least two ribs 222 are arranged in a cross or star shape. For example, please refer to... Figure 5 and Figure 6 Each focusing element 2 has a hollow cylinder at its base 21. The focusing part 22 is formed by two ribs 222 intersecting and connecting, and the two ribs 222 are arranged in a cross shape. Of course, if the focusing part 22 is formed by three ribs 222 intersecting and connecting, the three ribs 222 can also be arranged in a star shape. When the focusing part 22 includes a larger number of ribs 222, the multiple ribs 222 can still intersect in the middle.

[0067] Please refer to Figure 6 As shown, one possible implementation is that at the position where at least two ribs 222 are connected, the focusing part 22 is provided with a light-transmitting hole 223 along the height direction of the base 21, wherein the light-transmitting hole 223 is configured to allow the laser beam to pass through, and the position of the light-transmitting hole 223 is the focusing position 221.

[0068] For example, the incident laser beam can pass directly through the light-transmitting aperture 223 to the focusing element 2, which is particularly beneficial for improving the focusing effect when the laser beam spot is a small spot.

[0069] It should be noted that, in order to improve the focusing accuracy and stability of the focusing component 2, the focusing component 2 can be made of a rigid material to ensure the structural stability of the focusing component 2, especially the focusing part 22.

[0070] In the second specific implementation, please refer to Figure 7 At least two ribs 222 are inserted into the base 21, and the at least two ribs 222 are arranged to cross each other to form a focusing position 221 at the intersection. For example, multiple grooves can be formed on the inner wall and / or top wall of the hollow base 21. The multiple grooves are arranged circumferentially, and each groove corresponds to the end of the rib 222. By inserting the ends of the cross-arranged ribs 222 into the corresponding grooves, the corresponding focusing component 2 can be manufactured.

[0071] In addition, at least two ribs 222 are arranged in a cross or star shape. For example, please refer to... Figure 7Each focusing element 2 has a hollow cylinder base 21. The focusing part 22 is formed by two ribs 222 intersecting and connected, and the two ribs 222 are arranged in a cross shape. The inner wall of the focusing element 2 has four protruding ribs facing the center. Each rib and the corresponding part of the top of the focusing element 2 have a groove. The ends of the two ribs 222 are inserted into the corresponding grooves. Of course, if the focusing part 22 is formed by three ribs 222 intersecting and connected, the three ribs 222 can also be arranged in a star shape. If the focusing part 22 includes more ribs 222, the multiple ribs 222 can still intersect in the middle.

[0072] Understandably, in the second embodiment, the ribs 222 can be manufactured separately, for example, the ribs 222 can be made directly from thinner steel sheets. In this way, the focusing position 221 formed by multiple ribs 222 intersecting and connecting together will be relatively smaller, which is more conducive to improving the focusing accuracy of the incident laser beam.

[0073] It should be noted that, in order to improve the focusing accuracy and stability of the focusing component 2, the focusing component 2 can be made of a rigid material to ensure the structural stability of the focusing component 2, especially the focusing part 22.

[0074] Alternatively, to simplify the overall structure of the focusing mechanism 100 and ensure the focusing accuracy of the focusing element 2, please refer to... Figure 6 In one possible implementation, at the junction of at least two ribs 222, a light-transmitting hole 223 is provided in the focusing section 22 along the height direction of the base 21. The light-transmitting hole 223 is configured to allow the laser beam to pass through, and the location of the light-transmitting hole 223 is the focusing position 221. After each focusing element 2 is connected to the mounting hole, each light-transmitting hole 223 is coaxial. It can be understood that the laser beam spot size can be adjusted to allow the laser beam to pass through the light-transmitting hole 223. The light-transmitting hole 223 restricts the spot size of the laser beam that can pass through to a certain extent, so as to improve the accuracy of alignment. Therefore, when using the focusing mechanism for pre-focusing, allowing the laser beam to pass through the light-transmitting holes 223 of at least two focusing sections 22 can determine that the optical axis of the laser beam and the axis of the light-transmitting hole 223 are collinear, thereby determining the predetermined optical axis position of the focusing optics 310 of the laser processing head 300 to be installed.

[0075] Please refer to Figure 8In another possible implementation, the focusing unit 22 can be constructed as an annular plate including a central light-transmitting aperture 223, with the focusing position 221 located at the central light-transmitting aperture 223. Similarly, after each focusing element 2 is connected to the mounting hole, the central light-transmitting apertures 223 are coaxial. By adjusting the spot size of the laser beam to allow it to pass through the central light-transmitting aperture 223, pre-focusing can be achieved through the focusing mechanism, thereby determining the predetermined optical axis position of the focusing optics 310 of the laser processing head 300 to be installed. The central light-transmitting aperture 223 restricts the spot size of the laser beam that can pass through to a certain extent, which helps to improve the accuracy of alignment. The annular plate structure facilitates processing and size control, reduces dimensional deviations, and helps to improve the efficiency of pre-focusing and the accuracy of the predetermined optical axis position obtained by pre-focusing.

[0076] It is understandable that when the focusing mechanism 100 uses the focusing member 2 with the light-transmitting hole 223 or the central light-transmitting hole 223 for pre-focusing, it can detect whether the laser beam passes through the light-transmitting hole 223 or the central light-transmitting hole through the sensor to help confirm the effectiveness of the pre-focusing.

[0077] For example, the base 21 of the focusing element 2 is a cylinder, and a light-transmitting hole 223 is provided along its central axis. The center line of the light-transmitting hole 223 is on the same straight line as the central axis of the base 21, and is also on the same straight line as the focal point of the focusing optics 310. In this way, the incident laser beam can be directed to the designated processing position of the workpiece after passing through the light-transmitting hole 223 of each focusing element 2.

[0078] Please refer to Figure 1 and Figure 2 It is understandable that, in order to more realistically simulate the laser processing head 300 through the focusing mechanism 100, at least one focusing element 2 of the focusing mechanism 100 is located at the mounting position of the focusing optics 310 of the laser processing head 300. That is, by mounting the focusing mechanism 100 at the mounting position 210 for mounting the laser processing head 300, the mounting position and angle of the laser processing head 300 can be simulated respectively by adjusting the mounting position and angle of the focusing mechanism 100. Furthermore, by mounting the focusing element 2 of the focusing mechanism 100 at a mounting position corresponding to the focusing optics 310 of the laser processing head 300, more precise focusing of the incident laser beam onto the designated processing position of the workpiece can be achieved.

[0079] Please refer to Figure 1 and Figure 2It is understood that the at least two focusing elements 2 connected to the mounting bracket 1 include a first focusing element 23 and a second focusing element 24. The position of the first focusing element 23 on the mounting bracket 1 is equivalent to the position of the focusing optics 310 at one end of the laser processing head 300. Therefore, the imaging effect of the laser beam reaching the first focusing element 23 is the same as the imaging effect of the focusing optics 310 at one end of the laser processing head 300. The position of the second focusing element 24 on the mounting bracket 1 is equivalent to the position of the focusing optics 310 at the other end of the laser processing head 300. Therefore, the imaging effect of the laser beam reaching the second focusing element 24 is the same as the imaging effect of the focusing optics 310.

[0080] Therefore, during the pre-focusing process using the focusing mechanism 100, when the laser beam passes sequentially through the focusing positions 221 of the first focusing member 23 and the second focusing member 24, it indicates that the transmission path of the laser beam coincides with the predetermined optical axis of the focusing optics 310 at both ends of the laser processing head 300. If the laser beam fails to pass through both focusing positions 221 simultaneously, it is adjusted by position or angle (e.g., fine-tuning and / or coarse-tuning by adjusting component 250) until the incident laser beam accurately passes through the focusing positions 221 of the first focusing member 23 and the second focusing member 24. Thus, the line connecting the focusing positions 221 of the first focusing member 23 and the second focusing member 24 can be identified as the target optical axis position of the focusing optics 310 at both ends of the laser processing head 300 to be installed. At this time, the position and orientation of the mounting position 210 of the mounting mechanism 200 are the target mounting position and target mounting angle of the laser processing head 300 to be installed. After replacing the focusing mechanism 100 with the laser processing head 300, the optical axis of the focusing optics 310 of the laser processing head 300 coincides with the target optical axis. Therefore, the required processing focal spot can be obtained directly after installation.

[0081] To quickly determine the deflection position and angle of the incident laser beam to improve focusing efficiency, please refer to... Figure 1 , Figure 3 and Figure 4In one possible implementation, the at least two focusing elements 2 on the mounting bracket 1 further include a third focusing element 25. The third focusing element 25 is located between the first focusing element 23 and the second focusing element 24, and the focusing positions 221 of the third focusing element 25, the first focusing element 23, and the second focusing element 24 are on the same straight line. The third focusing element 25 can help quickly confirm the deflection direction of the laser beam before it reaches the second focusing element 24, which helps to improve the adjustment efficiency. When the laser beam passes synchronously through the focusing positions 221 of the first focusing element 23, the third focusing element 25, and the second focusing element 24, the linearity of the optical path in the focusing mechanism 100 can be ensured. At this time, the position and orientation of the mounting position 210 of the mounting mechanism 200 are the target mounting position and target mounting angle of the laser processing head 300 to be installed. After replacing the focusing mechanism 100 with the laser processing head 300, the optical axis of the focusing optics 310 of the laser processing head 300 coincides with the target optical axis. Therefore, the required processing focal spot can be obtained directly after installation.

[0082] For example, the principle by which the incident laser beam is focused on the designated processing position of the workpiece by the focusing mechanism 100 is roughly as follows: (1) The incident laser beam can be adjusted by the laser beam transmission and control mechanism to ensure that the incident laser beam is approximately located at the focus position 221 of the first focusing element 23 so that the transmission direction of the laser beam can be incident on the focusing optics 310 of the laser processing head 300.

[0083] (2) Then, the mounting position and mounting angle of the mounting mechanism 200 relative to the base frame 240 can be coarsely and finely adjusted by adjusting the fine adjustment component 252 and the coarse adjustment component 253 of the adjustment component 250 to control the movement of the mounting mechanism 200 and the focusing mechanism 100 mounted on the mounting mechanism 200 (including but not limited to at least one of moving up, down, forward, backward, left and backward), so that the optical axis of the incident laser beam can accurately pass through the focusing position 221 of the first focusing component 23 and the third focusing component 25, and be emitted from the focusing position 221 of the second focusing component 24, so as to ensure the accuracy of the optical axis position of the focusing optics 310 of the laser processing head 300, thereby ensuring that the incident laser beam can be focused by the laser processing head 300 to the designated processing position of the workpiece.

[0084] Please refer to Figure 1 , Figure 3 and Figure 4In one possible implementation, to simplify the structure of the focusing mechanism 100, the mounting frame 1 of the focusing mechanism 100 may include at least two frames. Each frame has a mounting hole at one end and a mounting hole or a connector at the other end. The connector is used for detachable and / or sliding connection between the at least two frames. For example, the mounting frame 1 may include a first frame 11 and a second frame 12. One end (specifically, the upper end) of the first frame 11 has a first positioning hole 111 for positioning a focusing component 2 (which may correspond to the first focusing component 23). The other end (specifically, the lower end) of the first frame 11 is detachably and / or slidingly connected to one end (specifically, the upper end) of the second frame 12. The other end (specifically, the lower end) of the second frame 12 has a second positioning hole 121 for positioning another focusing component 2 (which may correspond to the second focusing component 24). The centers of the second positioning hole 121 and the first positioning hole 111 are on the same straight line.

[0085] Understandably, the detachable connection between the first frame 11 and the second frame 12 facilitates the transportation and storage of the focusing mechanism 100, and also makes it easier to manufacture. Furthermore, the sliding connection between the first frame 11 and the second frame 12 allows the focusing mechanism 100 to adaptively adjust its length according to the length of the simulated laser processing head 300, thus enabling a more realistic, one-to-one simulation of the laser processing head 300.

[0086] For example, please see Figure 4 The other end (specifically the lower end) of the first frame 11 is provided with a third positioning hole 112 for mounting the third focusing component 25. In addition, in order to simplify the structure of the focusing mechanism 100 and ensure the structural stability of the focusing mechanism 100, a mounting groove 122 is formed on one end (specifically the upper end) of the second frame 12 for mounting the other end (specifically the lower end) of the first frame 11.

[0087] Also, for example, please see Figure 3 and Figure 4 The centers of the first frame 11, the mounting slot 122 and the second frame 12 are on the same straight line, and the centers of the first positioning hole 111, the third positioning hole 112 and the second positioning hole 121 are on the same straight line, so as to ensure that the first focusing component 23, the third focusing component 25 and the second focusing component 24 can be assembled concentrically, which is conducive to ensuring that the incident laser beam is accurately focused.

[0088] It should be noted that the laser beam transmission and control mechanism can be configured to shape and transmit the laser beam emitted by the laser as needed. For example, the incident laser beam can be adjusted so that it is approximately located at the focus position 221 of the focusing element 2 of the focusing mechanism 100, so as to ensure that the transmission direction of the laser beam can be incident on the incident range of the focusing optics 310 of the laser processing head 300.

[0089] The laser beam transmission and control mechanism may include at least one of optical devices such as aperture, shaping component, beam expander, reflector, and beam splitter. The laser beam transmission and control mechanism may adopt existing or newly created structures, and no particular limitation is made here.

[0090] In summary, by employing the aforementioned focusing mechanism 100, the laser processing equipment 1000 can conveniently and quickly pre-focus the incident laser beam, thereby determining the position and angle of the mounting mechanism 200 before formal processing, and thus determining the target mounting state (target mounting position and / or target mounting angle) of the laser processing head 300. When processing is required, the focusing mechanism 100 can be replaced with the laser processing head 300 to obtain the desired focal spot, which can help improve processing efficiency and yield.

[0091] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A focusing mechanism for a laser processing device, characterized in that, The laser processing equipment includes a laser processing head with focusing optics and a mounting mechanism for detachably mounting the laser processing head; the focusing mechanism is used to pre-focus the laser processing head of the laser processing equipment, and the focusing mechanism includes: The mounting bracket includes at least two mounting holes spaced apart along the length of the mounting bracket; the mounting bracket is configured to be detachably and / or adjustably mounted on the mounting mechanism; At least two focusing components, each of which is detachably arranged in the corresponding mounting hole; Each of the focusing components is provided with a focusing position, and the predetermined optical axis position of the focusing optics in the laser processing head is adjusted by adjusting the straight line connecting the focusing positions.

2. The focusing mechanism of the laser processing equipment according to claim 1, characterized in that, The laser processing head is a Bezier cutting head.

3. The focusing mechanism of the laser processing equipment according to claim 1, characterized in that, At least one observation window is arranged on the outer wall of the mounting frame, which exposes the focusing position for observing the position of the spot formed by the laser beam at the focusing position.

4. The focusing mechanism of the laser processing equipment according to claim 1, characterized in that, The mounting frame includes at least two frames, one end of each frame is provided with the mounting hole, and the other end of each frame is provided with the mounting hole or a connector, the connector being used for detachable connection and / or sliding connection between the at least two frames.

5. The focusing mechanism of the laser processing equipment according to claim 1, characterized in that, Each of the focusing components includes a base and a focusing portion. The base is coupled to the mounting hole, and the focusing portion is disposed in the central region of the base. The focusing portion has the focusing position formed on it.

6. The focusing mechanism of the laser processing equipment according to claim 5, characterized in that, The base is configured as a hollow column, the focusing portion extends towards the center along the inner peripheral wall of the column, and the focusing position is located at the center of the focusing portion.

7. The focusing mechanism of the laser processing equipment according to claim 6, characterized in that, The focus position is configured to include the following features: The focusing portion includes at least two ribs that extend along the inner peripheral wall of the columnar body toward the center of the base, and meet at the center of the base to form the focusing position; or... The focusing portion includes at least two ribs that extend along the inner peripheral wall of the columnar body toward the center of the base, meeting at the center of the base to form the focusing position. The at least two ribs are arranged in a cross or star shape; or... The focusing portion includes at least two ribs extending along the inner peripheral wall of the columnar body towards the center of the base, and meeting at the center of the base to form the focusing position; at the position where the at least two ribs meet, the focusing portion has a light-transmitting hole along the height direction of the base, the light-transmitting hole being configured to allow a laser beam to pass through, and the location of the light-transmitting hole is the focusing position; or... The focusing section is constructed as an annular plate including a central light-transmitting aperture, and the focusing position is located at the central light-transmitting aperture.

8. The focusing mechanism of the laser processing equipment according to any one of claims 1 to 7, characterized in that, The at least two focusing elements include a first focusing element and a second focusing element. The position of the first focusing element on the mounting bracket is equivalent to the position of the focusing optics at one end of the laser processing head, and the position of the second focusing element on the mounting bracket is equivalent to the position of the focusing optics at the other end of the laser processing head.

9. The focusing mechanism of the laser processing equipment according to claim 8, characterized in that, The at least two focusing elements further include a third focusing element, which is located between the first focusing element and the second focusing element, and the focusing positions of the third focusing element, the first focusing element, and the second focusing element are located on the same straight line.

10. A laser processing device, characterized in that, The laser processing equipment includes a laser, a laser processing head, a laser beam transmission and control mechanism, and an installation mechanism, wherein... The laser is used to emit a laser beam; The laser processing head is used to focus the laser beam onto the workpiece for laser processing, and the laser processing head includes at least one focusing optics; The mounting mechanism includes a base frame and an adjustment component. The base frame is configured to detachably mount the laser processing head or the focusing mechanism as described in any one of claims 1 to 9. The adjustment component is configured to adjust the mounting position and / or mounting angle of the laser processing head or the focusing mechanism on the base frame. The laser beam transmission and control mechanism is configured to control the initial position of the laser beam projected onto the laser processing head or the focusing mechanism. The focusing mechanism simulates the laser processing head being mounted on the mounting mechanism. The laser beam is pre-focused by the adjusting component and / or the laser beam transmission and control mechanism to obtain the target mounting state and then removed from the laser processing equipment to replace the laser processing head for mounting. And / or, the mounting mechanism has a mounting position configured for switching mounting of the Bezier head and the focusing mechanism; And / or, the adjustment component includes a coarse adjustment component and a fine adjustment component; And / or, the transmission and control mechanism includes at least one of an aperture, a shaping mechanism, a beam expander, a reflector, and a beam splitter.

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