Field lens angle adjusting device for laser cutting equipment

Abstract

This utility model discloses a field lens angle adjustment device for laser cutting equipment, including a base plate, a rotating plate, a field lens mounting plate, a field lens, an adjusting screw, and an elastic element. The rotating plate is disposed on one side of the base plate and is rotatably connected to the base plate via a connector. The field lens is fixed to the rotating plate on the side away from the base plate via the field lens mounting plate. The adjusting screw and the elastic element are arranged in pairs on opposite sides of the rotating plate. The adjusting screw drives the rotating plate to rotate around the connector by screwing in or out, and the elastic element applies a reverse elastic force to the rotating plate to maintain the relative position of the rotating plate and the base plate. This utility model achieves fine adjustment of the field lens angle, ensuring that the laser beam path is perpendicular to the target cutting surface, and significantly improving the quality of laser cutting.

Description

Technical Field

[0001] This utility model relates to the field of industrial equipment, and in particular to a field lens angle adjustment device for laser cutting equipment. Background Technology

[0002] In laser cutting of diamond blanks, due to the extremely high hardness and brittleness of diamond crystals, and the anisotropic nature of their crystal structure, the cutting quality is highly dependent on the relative angle between the laser beam and the crystal. It is essential to ensure that the laser beam is perpendicular to the target cutting surface to avoid problems such as chipping and delamination during the cutting process, ultimately resulting in a smooth cut surface.

[0003] In existing technologies, during cutting, the laser beam emitted from the laser cutting head needs to be focused by a field lens before acting on the diamond blank. However, the field lens is mostly fixed using traditional clamps. These clamps can only achieve a rough position fixation and cannot finely adjust the relative angle between the laser beam path and the diamond crystal cutting surface. Especially when there is a slight deviation between the laser beam path and the crystal cutting surface, the light spot focused on the cutting surface will be distorted, and traditional clamps, lacking precise adjustment capabilities, cannot correct the light spot to a regular circle. This problem directly leads to uneven laser energy distribution, making it impossible to ensure that the laser beam path is perpendicular to the cutting surface, which seriously restricts the improvement of diamond laser cutting quality.

[0004] Based on the above problems, there is an urgent need to develop a new type of field lens angle adjustment device for laser cutting equipment. Utility Model Content

[0005] In view of this, the present invention provides a field lens angle adjustment device for laser cutting equipment, which solves the problem that the field lens angle cannot be finely adjusted in the prior art, making it difficult to keep the laser beam path perpendicular to the diamond crystal cutting surface, thus affecting the cutting quality.

[0006] To achieve one or more of the above objectives or other objectives, this utility model provides a field lens angle adjustment device for laser cutting equipment, including a base plate, a rotating plate, a field lens mounting plate, a field lens, an adjusting screw, and an elastic element;

[0007] The rotating plate is disposed on one side of the base plate and is rotatably connected to the base plate via a connector;

[0008] The field lens is fixed to the side of the rotating plate away from the base plate by a field lens mounting plate;

[0009] The adjusting screw and the elastic element are both arranged in pairs on opposite sides of the rotating plate. The adjusting screw drives the rotating plate to rotate around the connecting member by screwing in or out. The elastic element applies a reverse elastic force to the rotating plate to maintain the relative position of the rotating plate and the base plate.

[0010] Furthermore, the connecting component is a first screw, a positioning hole is opened on the upper part of the rotating plate, and a first screw hole is opened on the base plate. The first screw passes through the positioning hole and the first screw hole. After the field lens angle is adjusted, the first screw is tightened to lock the rotational freedom of the rotating plate.

[0011] Furthermore, the rotating plate has an arc-shaped groove below the positioning hole, and the base plate has a second screw hole corresponding to the position of the arc-shaped groove. The second screw passes through the arc-shaped groove and the second screw hole. When the field lens angle is adjusted, the second screw is in an untightened state. After the field lens angle is adjusted, the second screw is tightened to lock the rotating plate at the target angle.

[0012] Furthermore, the arc-shaped groove has a double-layer stepped structure, including a wide groove section communicating with the surface of the rotating plate, and a narrow groove section located below the wide groove section; the width of the wide groove section is greater than the head diameter of the second screw, and the width of the narrow groove section is adapted to the screw diameter of the second screw; the screw of the second screw passes through the narrow groove section, and the head of the second screw is confined within the wide groove section.

[0013] Furthermore, the elastic element is connected to the base plate via a fixing block; the fixing block has an L-shaped structure, the first straight edge of the fixing block is fixedly installed on the base plate by fasteners, the second straight edge of the fixing block is perpendicular to the base plate, and a spring hanging post is provided on the second straight edge; one end of the elastic element is hooked to the spring hanging post, and the other end of the elastic element is hooked to the hooking part on the rotating plate.

[0014] Furthermore, a screw mounting through hole is provided on the second straight edge of the fixing block, and the adjusting screw passes through the screw mounting through hole and abuts against the rotating plate.

[0015] Furthermore, the rotating plate has multiple sets of height adjustment holes spaced apart along the vertical direction. The field lens mounting plate includes a mounting reference surface that fits and is mounted to the rotating plate. The mounting reference surface has assembly through holes. Fasteners are passed through the assembly through holes and a set of height adjustment holes to fix the field lens mounting plate to the rotating plate.

[0016] Furthermore, the field lens mounting plate also includes a positioning stage perpendicular to the mounting reference plane. The positioning stage has a light-transmitting hole, the inner diameter of which is adapted to the outer diameter of the field lens, and the field lens is installed inside the positioning stage.

[0017] Furthermore, the mounting portion of the rotating plate includes a mounting shaft fixedly inserted inside the rotating plate, and a mounting through hole is opened on the side wall of the rotating plate at a position corresponding to the mounting shaft. One end of the elastic member passes through the mounting through hole and is mounted on the mounting shaft.

[0018] Furthermore, it also includes a ring light source assembly, which is mounted below the field lens.

[0019] Implementing the embodiments of this utility model will have the following beneficial effects:

[0020] This invention relates to a field lens angle adjustment device for laser cutting equipment. A rotating plate is rotatably connected to a base plate via a connector. The field lens is fixed to the rotating plate via a field lens mounting plate, ensuring that the field lens rotates synchronously with the rotating plate. Pairs of adjusting screws and elastic elements are located on opposite sides of the rotating plate. The adjusting screws generate thrust by screwing in or out, driving the rotating plate to rotate, while the elastic elements apply a counter-elastic force. This balance ensures that the rotating plate is stable and controllable during adjustment, thus achieving precise adjustment of the field lens angle. By accurately adjusting the field lens angle, it is ensured that the laser beam focused on the diamond blank cutting surface after passing through the field lens is a regular circle, ensuring that the laser beam path is perpendicular to the target cutting surface. This effectively avoids beam distortion caused by angle deviation, thereby reducing problems such as diamond crystal chipping and delamination during cutting, ultimately obtaining a smooth cutting surface and significantly improving the quality and precision of laser cutting. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] in:

[0023] Figure 1 This is a schematic diagram of the structure of a field lens angle adjustment device for a laser cutting equipment in one embodiment;

[0024] Figure 2 Exploded view of the field lens angle adjustment device for laser cutting equipment;

[0025] Figure 3 This is a schematic diagram of the base plate in one embodiment;

[0026] Figure 4 This is a schematic diagram of the rotating plate in one embodiment;

[0027] Figure 5 This is a schematic diagram of the structure of the fixing block in one embodiment;

[0028] Figure 6 This is a schematic diagram of the field lens mounting plate in one embodiment.

[0029] Explanation of the attached drawing numbers:

[0030] 1: Base plate; 11: First screw hole; 12: Second screw hole; 2: Rotating plate; 21: Positioning hole; 22: Arc groove; 221: Wide groove section; 222: Narrow groove section; 23: Hanging part; 231: Hanging shaft; 232: Hanging through hole; 24: Height adjustment hole; 3: Field lens mounting plate; 31: Mounting reference surface; 33: Positioning stage; 34: Light transmission hole; 4: Field lens; 5: Adjusting screw; 6: Elastic element; 7: Connecting element; 8: Second screw; 9: Fixing block; 91: First straight edge; 92: Second straight edge; 93: Spring hanging column; 94: Screw mounting through hole; 10: Ring light source assembly. Detailed Implementation

[0031] 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 to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment 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.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] Reference Figure 1 and Figure 2This utility model provides an embodiment of a field lens angle adjustment device for laser cutting equipment, comprising a base plate 1, a rotating plate 2, a field lens mounting plate 3, a field lens 4, an adjusting screw 5, and an elastic element 6. The rotating plate 2 is disposed on one side of the base plate 1 and is rotatably connected to the base plate 1 via a connector 7. The field lens 4 is fixed to the side of the rotating plate 2 away from the base plate 1 via the field lens mounting plate 3. The adjusting screw 5 and the elastic element 6 are both arranged in pairs on opposite sides of the rotating plate 2. The adjusting screw 5 drives the rotating plate 2 to rotate around the connector 7 by screwing in or out, and the elastic element 6 applies a reverse elastic force to the rotating plate 2 to maintain the relative position of the rotating plate 2 and the base plate 1.

[0035] In this embodiment, the laser cutting head (not shown in the figure) is positioned above the field lens 4. The field lens 4 is used to focus the laser emitted from the laser cutting head onto the workpiece (not shown in the figure) such as the diamond blank below the field lens 4. The angle of the field lens 4 directly affects the direction of the laser beam path, thus affecting the cutting quality. The base plate 1 is made of metal and can be fixed to the corresponding frame of the laser cutting equipment by bolts or other connecting parts. The rotating plate 2 is made of metal and is mounted on the base plate 1. Its size can be slightly smaller than the base plate 1. The connecting part 7 is used to realize the rotatable connection between the rotating plate 2 and the base plate 1. It can be a commonly used rotating connecting part such as a pin or screw, allowing the rotating plate 2 to rotate flexibly around it. The field lens mounting plate 3 is fixedly connected to the rotating plate 2 by bolts or other fasteners, thereby realizing that the field lens 4 rotates with the rotating plate 2.

[0036] The paired adjusting screws 5 are located on both sides of the rotating plate 2. When the angle of the field lens 4 needs to be adjusted, one adjusting screw 5 is screwed in while the other adjusting screw 5 is screwed out. The pushing force of the adjusting screws 5 on the rotating plate 2 drives the rotating plate 2 to rotate around the connecting piece 7, thereby causing the field lens mounting plate 3 and the field lens 4 to rotate together, thus achieving the adjustment of the angle of the field lens 4. The elastic element 6 can be a tension spring or other elastic component. The paired elastic elements 6 are connected to both sides of the rotating plate 2. When the adjusting screws 5 drive the rotating plate 2 to rotate, the elastic elements 6 are stretched or compressed, thereby applying a reverse elastic force to the rotating plate 2. This reverse elastic force can balance the pushing force applied by the adjusting screws 5, keeping the rotating plate 2 stable during the adjustment process. After the adjustment is completed, it can maintain the relative position of the rotating plate 2 and the base plate 1, ensuring the stability of the angle of the field lens 4, and thus ensuring the stability of the laser beam path, which is beneficial to improving the cutting quality of workpieces such as diamond blanks.

[0037] When laser cutting of diamond blanks is required, the rotating plate 2 can be driven to rotate around the connecting piece 7 by adjusting the pair of adjusting screws 5, which in turn drives the field lens 4 to rotate to adjust the angle. At the same time, the reverse elastic force applied by the elastic element 6 keeps the angle of the field lens 4 stable. Observe the shape of the laser spot after the laser passes through the field lens 4. When the spot is a focused circle, it indicates that it is perpendicular to the target cutting surface of the diamond blank. When the spot has a distorted shape such as an oblong or elliptical shape, it indicates that there is an angle deviation, and the field lens angle needs to be finely adjusted until the spot is circular. This embodiment realizes fine adjustment of the field lens angle through the above structure, which meets the needs of laser precision cutting of ultrahard materials such as diamond blanks.

[0038] In some specific embodiments, reference is made to Figure 2 and Figure 3 The connecting component 7 is a first screw. A positioning hole 21 is provided on the upper part of the rotating plate 2, and a first screw hole 11 corresponding to the positioning hole 21 is provided on the base plate 1. The first screw passes sequentially through the positioning hole 21 of the rotating plate 2 and the first screw hole 11 of the base plate 1, and the first screw is threadedly connected to the first screw hole 11. When the first screw is not fully tightened, the rotating plate 2 can rotate around the first screw as an axis to adjust the angle of the field lens 4. After the angle of the field lens 4 is adjusted, the rotating plate 2 is securely locked in its current position by tightening the first screw, thereby locking the rotational freedom of the rotating plate 2 and maintaining the rotating plate 2 at the target angle.

[0039] In some specific embodiments, reference is made to Figure 4 The rotating plate 2 has an arc-shaped groove 22 below the positioning hole 21. The base plate 1 has a second screw hole 12 corresponding to the position of the arc-shaped groove 22. The second screw 8 passes through the arc-shaped groove 22 and the second screw hole 12, and the second screw 8 is threadedly connected to the second screw hole 12. When the field lens 4 is adjusted, the second screw 8 is not tightened; after the field lens 4 is adjusted, the second screw 8 is tightened to lock the rotating plate 2 at the target angle position.

[0040] The curvature of the arc-shaped groove 22 is adapted to the rotation trajectory of the rotating plate 2, and its length can be designed according to the actual required angle adjustment range. During the angle adjustment of the field lens 4, the second screw 8 is not tightened. At this time, when the rotating plate 2 rotates around the first screw, the arc-shaped groove 22 will slide relative to the second screw 8 as the rotating plate 2 rotates. After the angle of the field lens 4 is adjusted, the second screw 8 is tightened, which, together with the already tightened first screw, locks the rotating plate 2 at the target angle position, enhancing the angular stability of the rotating plate 2.

[0041] In some specific embodiments, reference is made to Figure 4The arc-shaped groove 22 has a double-layer stepped structure, including a wide groove section 221 communicating with the surface of the rotating plate 2, and a narrow groove section 222 located below the wide groove section 221. The width of the wide groove section 221 is greater than the head diameter of the second screw 8, and the width of the narrow groove section 222 is adapted to the screw diameter of the second screw 8. The screw of the second screw 8 passes through the narrow groove section 222, while the head of the second screw 8 is confined within the wide groove section 221. When the second screw 8 is not tightened, its head will not interfere with the surface of the rotating plate 2, and the arc-shaped groove 22 can slide smoothly relative to the second screw 8, thereby achieving smooth rotation of the rotating plate 2. Simultaneously, when the second screw 8 is tightened, its head will press against the bottom of the wide groove section 221, thereby locking the rotating plate 2.

[0042] In some specific embodiments, reference is made to Figure 1 and Figure 5 The elastic element 6 is connected to the base plate 1 via a fixing block 9. The fixing block 9 has an L-shaped structure, including a first straight edge 91 and a second straight edge 92 that are perpendicular to each other. The first straight edge 91 of the fixing block 9 is fixedly installed on the base plate 1 by fasteners (such as bolts, screws, etc.). The second straight edge 92 of the fixing block 9 is perpendicular to the base plate 1, and a spring hanging post 93 is provided on the second straight edge 92. The spring hanging post 93 is a columnar structure that passes through the second straight edge 92. Correspondingly, the second straight edge 92 has a mounting hole for the spring hanging post 93 to pass through, and the spring hanging post 93 is interference-fitted with the mounting hole. At the same time, the second straight edge 92 also has a through hole for one side of the elastic element 6 to pass through. The position of the through hole corresponds to the spring hanging post 93, and the diameter of the hole is slightly larger than the diameter of the elastic element 6. In some other embodiments, the spring hanging post 93 may also be integrally formed or formed on one side of the second straight edge 92 by welding or other methods. One end of the elastic element 6 is attached to the spring post 93, and the other end is attached to the mounting part 23 on the rotating plate 2. The elastic element 6 can be a tension spring, which has excellent elastic recovery capability. When the rotating plate 2 rotates under the drive of the adjusting screw 5, the elastic element 6 is stretched or compressed, thereby generating a reverse elastic force. This elastic force can balance the pushing force of the adjusting screw 5 on the rotating plate 2, keeping the rotating plate 2 stable during angle adjustment. Simultaneously, after the angle adjustment is completed and locked, the elastic force of the elastic element 6 can maintain the positional stability of the rotating plate 2, preventing angle deviation due to long-term use or vibration.

[0043] In some specific embodiments, reference is made to Figure 5 The second straight edge 92 of the fixing block 9 is also provided with a screw mounting through hole 94, and the adjusting screw 5 passes through the screw mounting through hole 94 and abuts against the rotating plate 2.

[0044] The screw mounting through hole 94 is positioned corresponding to the rotating plate 2, and its inner diameter matches the screw diameter of the adjusting screw 5. Furthermore, the inner wall can be provided with an internal thread matching the adjusting screw 5, allowing the adjusting screw 5 to be screwed in and out during insertion via the threaded engagement. When adjusting the angle of the rotating plate 2, the operator rotates the adjusting screw 5, causing it to screw in or out along the screw mounting through hole 94. The end of the adjusting screw 5 abuts against the rotating plate 2. When screwed in, it applies a thrust to the rotating plate 2, pushing it to rotate around the connecting member 7; when screwed out, the thrust decreases, and under the reverse elastic force of the elastic member 6, the rotating plate 2 rotates in the opposite direction; thus achieving smooth and precise adjustment of the angle of the rotating plate 2.

[0045] In some specific embodiments, reference is made to Figure 4 and Figure 6 The rotating plate 2 has multiple sets of height adjustment holes 24 spaced apart along the vertical direction. These height adjustment holes 24 can be arranged at equal intervals, with each set containing at least two holes. The field lens mounting plate 3 includes a mounting reference surface 31 that fits into the rotating plate 2. The mounting reference surface 31 has assembly through holes, the number and position of which are adapted to any set of height adjustment holes 24 on the rotating plate 2. When the height of the field lens 4 needs to be adjusted, a suitable set of height adjustment holes 24 is selected according to the required height. After the fastener passes through the assembly through holes on the field lens mounting plate 3, it is connected and tightened to the selected height adjustment hole 24. By passing the fastener through the assembly through holes and the set of height adjustment holes 24, the field lens mounting plate 3 and the rotating plate 2 are fixed, thereby realizing the adjustment of the height of the field lens 4. This can meet the height requirements of the field lens 4 for diamond blanks of different thicknesses or different cutting scenarios, thus ensuring the laser focusing effect and ensuring the cutting quality.

[0046] In some specific embodiments, reference is made to Figure 6 The field lens mounting plate 3 further includes a positioning stage 33 perpendicular to the mounting reference surface 31. The positioning stage 33 has a light-transmitting hole 34, the inner diameter of which matches the outer diameter of the field lens 4. The field lens 4 is installed within the positioning stage 33. The positioning stage 33 is perpendicular to the mounting reference surface 31, and the two can be manufactured using an integral molding process. The light-transmitting hole 34 penetrates the positioning stage 33, and its axis coincides with the optical axis of the field lens 4. When it is necessary to replace the field lens 4 with a different specification, simply remove the original field lens 4 from the light-transmitting hole 34 and insert the new field lens 4, facilitating the installation, removal, and replacement of the field lens 4.

[0047] In some specific embodiments, reference is made to Figure 4The mounting portion 23 of the rotating plate 2 includes a mounting shaft 231 fixedly inserted within the rotating plate 2. A mounting through hole 232 is formed on the side wall of the rotating plate 2 at a position corresponding to the mounting shaft 231. One end of the elastic member 6 passes through the mounting through hole 232 and is mounted on the mounting shaft 231. The mounting shaft 231 has a cylindrical structure, with both ends fixedly inserted inside the rotating plate 2, and can be fixed by an interference fit. The mounting through hole 232 is formed on the side wall of the rotating plate 2, corresponding to the position of the mounting shaft 231, and its diameter is slightly larger than the diameter of the elastic member 6 to facilitate the passage of the elastic member 6.

[0048] When the rotating plate 2 rotates under the drive of the adjusting screw 5, the elastic element 6 is stretched or compressed, and a reverse elastic force is applied to the rotating plate 2 through the hook shaft 231, which balances the thrust of the adjusting screw 5, making the angle adjustment of the rotating plate 2 more stable. At the same time, this structure also facilitates the installation and replacement of the elastic element 6, which is beneficial to the maintenance of the device.

[0049] In some specific embodiments, reference is made to Figure 6 The laser cutting equipment's field lens angle adjustment device also includes a ring light source assembly 10, which is installed below the field lens 4. The ring light source assembly 10 contains a ring-shaped lamp body (not shown in the figure), the inner diameter of which is slightly larger than the diameter of the light outlet below the field lens 4 to avoid obstructing the laser beam path. The ring light source assembly 10 can be an LED light source, offering high brightness, low energy consumption, long lifespan, and uniform light distribution. During the laser cutting of diamond blanks, the ring light source assembly 10 provides sufficient and uniform illumination to the processing area below the field lens 4, allowing the operator to clearly observe the cutting position, cutting status, and focused spot shape of the diamond blank.

[0050] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A field lens angle adjusting device for a laser cutting apparatus, characterized by, Includes base plate, rotating plate, field lens mounting plate, field lens, adjusting screws, and elastic components; The rotating plate is disposed on one side of the base plate and is rotatably connected to the base plate via a connector; The field lens is fixed to the side of the rotating plate away from the base plate by a field lens mounting plate; The adjusting screw and the elastic element are both arranged in pairs on opposite sides of the rotating plate. The adjusting screw drives the rotating plate to rotate around the connecting member by screwing in or out. The elastic element applies a reverse elastic force to the rotating plate to maintain the relative position of the rotating plate and the base plate.

2. The field lens angle adjusting device for a laser cutting apparatus according to claim 1, wherein The connector is a first screw. A positioning hole is opened on the upper part of the rotating plate, and a first screw hole is opened on the base plate. The first screw passes through the positioning hole and the first screw hole. After the field lens angle is adjusted, the first screw is tightened to lock the rotational freedom of the rotating plate.

3. The field lens angle adjustment device for laser cutting equipment as described in claim 2, characterized in that, The rotating plate has an arc-shaped groove below the positioning hole, and the base plate has a second screw hole corresponding to the position of the arc-shaped groove. The second screw passes through the arc-shaped groove and the second screw hole. When the field lens angle is adjusted, the second screw is not tightened. After the field lens angle is adjusted, the second screw is tightened to lock the rotating plate at the target angle.

4. The field lens angle adjusting device for a laser cutting apparatus according to claim 3, wherein The arc-shaped groove has a double-layer stepped structure, including a wide groove section communicating with the surface of the rotating plate, and a narrow groove section located below the wide groove section; the width of the wide groove section is greater than the head diameter of the second screw, and the width of the narrow groove section is adapted to the screw diameter of the second screw; the screw of the second screw passes through the narrow groove section, and the head of the second screw is confined within the wide groove section.

5. The field lens angle adjusting device for a laser cutting apparatus according to claim 1, wherein The elastic element is connected to the base plate via a fixing block; the fixing block has an L-shaped structure, and the first straight edge of the fixing block is fixedly installed on the base plate by fasteners. The second straight edge of the fixing block is perpendicular to the base plate, and a spring hanging post is provided on the second straight edge; one end of the elastic element is hung on the spring hanging post, and the other end of the elastic element is hung on the hanging part on the rotating plate.

6. The field lens angle adjusting device for a laser cutting apparatus according to claim 5, wherein A screw mounting through hole is also provided on the second straight edge of the fixing block, and the adjusting screw passes through the screw mounting through hole and abuts against the rotating plate.

7. The field lens angle adjustment device for laser cutting equipment as described in claim 5, characterized in that, The rotating plate has multiple sets of height adjustment holes spaced apart along the vertical direction. The field lens mounting plate includes a mounting reference surface that fits and is mounted to the rotating plate. The mounting reference surface has assembly through holes. Fasteners are passed through the assembly through holes and a set of height adjustment holes to fix the field lens mounting plate to the rotating plate.

8. The field lens angle adjusting device for a laser cutting apparatus according to claim 7, wherein The field lens mounting plate also includes a positioning platform perpendicular to the mounting reference plane. The positioning platform has a light-transmitting hole, the inner diameter of which is adapted to the outer diameter of the field lens. The field lens is installed inside the positioning platform.

9. The field lens angle adjusting device for a laser cutting apparatus according to claim 5, wherein The mounting portion of the rotating plate includes a mounting shaft fixedly inserted inside the rotating plate. A mounting through hole is opened on the side wall of the rotating plate at a position corresponding to the mounting shaft. One end of the elastic element passes through the mounting through hole and is mounted on the mounting shaft.

10. The field lens angle adjusting device for a laser cutting apparatus according to claim 1, wherein It also includes a ring light source assembly, which is mounted below the field lens.

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