Laser processing head, laser processing device, and laser processing system

Abstract

The application discloses a laser processing head, a laser processing device and a laser processing system. The laser processing head comprises a base body and a lens module; the base body is provided with a mounting groove; the lens module comprises a lens support and an optical lens; the optical lens is quickly connected to the lens support; and the lens support is rotationally connected to the base body, so that the lens support is rotationally switched between a first state and a second state relative to the mounting groove; when the lens support is in the first state, the optical lens is placed in the mounting groove; and when the lens support is in the second state, the optical lens is relatively rotated out of the mounting groove and exposed outside the base body. According to the technical scheme, when the optical lens needs to be replaced, a user only needs to rotate the lens support to the second state, and then the optical lens can be quickly replaced based on the quick connection design between the optical lens and the lens support, so that the operation is simple and convenient, and the maintenance efficiency of the optical lens can be greatly improved.

Description

Technical Field

[0001] This application relates to the field of laser processing equipment technology, and in particular to a laser processing head, a laser processing device, and a laser processing system. Background Technology

[0002] In applications such as laser processing and optical inspection and measurement, optical lenses are critical components in the optical path. When used as protective lenses, they can block contaminants, maintain light transmittance, and extend the lifespan of core optical components. However, in practical applications, optical lenses are exposed to high-temperature and highly polluted environments for extended periods, making them prone to surface contamination, mechanical scratches, and chemical corrosion. When the light transmittance of an optical lens drops to a critical value or irreversible damage occurs, it must be replaced promptly to avoid affecting processing quality or the performance of the optical system.

[0003] Currently, optical lenses on the market generally adopt a drawer-type installation structure with screws. This structure requires tools, such as screwdrivers, to loosen the screws one by one when disassembling, which is cumbersome and time-consuming. Especially in emergency situations, it can easily delay the response time. Furthermore, if the screws are tightened unevenly, it may cause uneven stress on the lens and break it.

[0004] Therefore, there is an urgent need for an optical lens mounting structure that is easy to operate and quick to install and remove, in order to improve replacement efficiency and ensure the stability and safety of the optical system. Utility Model Content

[0005] This application provides a laser processing head designed to solve the problem of inconvenient disassembly and assembly of optical lenses in the prior art.

[0006] To achieve the above objectives, this application proposes a laser processing head. The laser processing head includes:

[0007] The substrate is provided with mounting slots;

[0008] A lens module includes a lens holder and an optical lens, wherein the optical lens is quickly connected to the lens holder; and the lens holder is rotatably connected to the base, so that the lens holder can rotate between a first state and a second state relative to the mounting slot.

[0009] When the lens holder is in the first state, the optical lens is placed in the mounting groove; and when the lens holder is in the second state, the optical lens is rotated out of the mounting groove and exposed outside the substrate.

[0010] In some embodiments, the rotation center axis of the optical lens is parallel to and spaced from the lens center axis of the optical lens.

[0011] In some embodiments, the lens holder has a recessed cavity formed on its side along the optical axis, and the optical lens is disposed in the recessed cavity; and the thickness of the optical lens does not exceed the depth of the recessed cavity.

[0012] In some embodiments, the optical lens and the mounting cavity are in a transition fit, with the optical lens embedded within the mounting cavity; or...

[0013] A protective frame is provided around the optical lens, and a corresponding magnetic attraction element is provided between the protective frame and the bottom of the recessed cavity. The optical lens is placed in the recessed cavity by magnetic attraction.

[0014] In some embodiments, the cavity has an operating hole on its opposite side cavity wall along its depth direction, the operating hole being used to facilitate a user to clamp the optical lens.

[0015] In some embodiments, the lens module further includes a sealing ring disposed within the mounting cavity, the sealing ring being disposed relative to the optical lens near the opening end of the mounting cavity.

[0016] In some embodiments, the lens holder includes a first holder and a second holder, the first holder being rotatably connected to the base, the second holder being detachably connected to the first holder, and the optical lens being detachably disposed on the second holder.

[0017] In some embodiments, a state-maintaining mechanism is provided between the lens holder and the substrate, the state-maintaining mechanism being used to ensure the stability of the lens holder in the first state or the second state.

[0018] In some embodiments, the state-maintaining mechanism includes a rotating shaft and a shaft hole disposed at the rotatable connection between the lens holder and the substrate, wherein rotational damping is formed by the cooperation between the rotating shaft and the shaft hole; or,

[0019] The state-holding mechanism includes a gasket disposed between the lens holder and the two side walls of the mounting groove to generate rotational damping between the lens holder and the mounting groove; or,

[0020] The state holding mechanism includes elastic buckles provided on both sides of the mounting groove. The elastic buckles cooperate with the corresponding slots on the lens holder. The elastic buckles automatically engage when the lens holder rotates to the first state or the second state.

[0021] In some embodiments, the substrate includes a first substrate and a second substrate spaced apart from each other, a shaft is provided between the first substrate and the second substrate to allow the first substrate and the second substrate to rotate relative to each other and be offset; and the mounting groove is formed between the first substrate and the second substrate, the lens holder is rotatably disposed in the mounting groove and the shaft is used as the axis of rotation;

[0022] The lens holder rotates with one of the first and second substrates to switch between the first and second states.

[0023] In some embodiments, a protective cover is also included, which is used to cover the mounting groove to prevent contaminants from entering the substrate from the opening of the mounting groove.

[0024] In some embodiments, the protective cover is a sleeve that is movably fitted onto the base; or...

[0025] The protective cover is a cover, and the cover is detachably connected to the base.

[0026] This application also provides a laser processing apparatus, which includes the laser processing head described above.

[0027] This application also provides a laser processing system, which includes the laser processing apparatus described above.

[0028] This application proposes a laser processing head. The laser processing head includes a base and a lens module. The base has a mounting groove. The lens module includes a lens holder and an optical lens, with the optical lens quickly-released to the lens holder. The lens holder is rotatably connected to the base, allowing it to switch between a first state and a second state relative to the mounting groove. In the first state, the optical lens is placed within the mounting groove. In the second state, the optical lens rotates out of the mounting groove and is exposed outside the base. Based on this structural design, when the optical lens needs to be replaced, simply rotate the lens holder to the second state. At this point, the optical lens rotates out of the mounting groove and is exposed outside the base. Due to the quick-release connection between the optical lens and the lens holder, the user can quickly replace the optical lens on the lens holder. After replacement, rotating the lens holder back to the first state resets the optical lens in the mounting groove, achieving optical protection. This structural design simplifies and simplifies lens replacement, significantly improving the efficiency of optical lens maintenance. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0030] Figure 1 This is a schematic diagram of the laser processing head in a second state according to an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the laser processing head in a second state according to an embodiment of this application;

[0032] Figure 3 This is another structural schematic diagram of a lens module according to an embodiment of this application;

[0033] Figure 4 This is a cross-sectional schematic diagram of the first support, the second support, and the embedding cavity;

[0034] Figure 5 This is a schematic diagram showing the installation of the first bracket, the second bracket, and the optical lens;

[0035] Figure 6 A schematic diagram showing the rotation of the first substrate, the second substrate, and the lens holder.

[0036] Among them, 10-substrate; 11-first substrate; 12-second substrate; 13-shaft; 110-mounting groove; 120-gasket; 20-lens module; 21-lens bracket; 210-first bracket; 211-second bracket; 22-optical lens; 23-sealing ring; 24-operation hole; 30-protective cover. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0038] It should be noted that, unless otherwise stated or limited, all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0039] It should also be noted that, unless otherwise stated or limited, when an element is referred to as being "fixed to" or "set on" another element, it may be directly on the other element or there may be an intervening element present. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intervening element present.

[0040] Furthermore, unless otherwise stated or limited, the descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0041] See Figure 1 , Figure 2 and Figure 5 As shown, this application proposes a laser processing head. The laser processing head includes a substrate 10 and a lens module 20. The substrate 10 can be a laser processing device such as a laser cutting head, laser marking head, laser welding head, or laser cleaning head, or an optical inspection and measurement device such as an industrial camera lens or a laser rangefinder. The above devices are equipped with an optical system to maintain normal operation, and thus include an optical lens 22. This optical lens 22 is installed at the front end of the device to achieve dustproof, anti-fouling, and anti-damage effects, ensuring the normal operation of the device.

[0042] Specifically, in this application's technical solution, the substrate 10 is provided with a mounting groove 110; the lens module 20 includes a lens holder 21 and an optical lens 22, the optical lens 22 being quickly connected to the lens holder 21; and the lens holder 21 is rotatably connected to the substrate 10, so that the lens holder 21 can rotate relative to the mounting groove 110 to switch between a first state and a second state. Specifically, when the lens holder 21 is in the first state, the optical lens 22 is placed inside the mounting groove 110; when the lens holder 21 is in the second state, the optical lens 22 rotates out of the mounting groove 110 and is exposed outside the substrate 10.

[0043] Understandably, when the lens holder 21 is in the first state, the optical lens 22 moves into position within the mounting slot 110, following the lens holder 21, and is positioned at the front end of the optical path of the optical system. It is worth noting that when installed, the lens axis of the optical lens 22 should coincide with the axis of the optical system. This ensures the stability of the optical system while protecting other tightly fitted optical components within the substrate 10. When the lens holder 21 rotates to the second state, the optical lens 22 rotates out of the mounting slot 110 and is exposed outside the substrate 10. At this point, thanks to the quick-release connection design between the optical lens 22 and the lens, the user can quickly replace the optical lens 22.

[0044] In summary, the laser processing head provided by this application, compared with the traditional drawer-type + screw-fixed structure, allows for easy disassembly and installation when the optical lens 22 needs to be replaced. This is achieved simply by rotating the lens bracket 21 to expose the optical lens 22, which greatly improves the ease of operation and the maintenance efficiency of the optical lens 22.

[0045] Optionally, the lens holder 21 is connected to the substrate 10 via a rotating shaft (not shown), the extension direction of which is parallel to the optical path of the optical system, so that the lens holder 21 can rotate in or out from the side of the substrate 10. It is worth noting that in a preferred embodiment, the two ends of the rotating shaft are respectively connected to the two sides of the mounting groove 110, and the shape of the lens holder 21 is adapted to the specific shape of the substrate 10 to ensure that no interference occurs during rotation. Furthermore, when the lens holder 21 is in the first state, it can be precisely embedded within the substrate 10, maintaining the smoothness and flatness of the substrate 10 surface.

[0046] For example, when the base 10 is cylindrical, the edge of the lens holder 21 is designed to be arc-shaped and includes at least one smooth transition surface. This smooth transition surface has the same curvature as the surface of the base 10. When the lens holder 21 is rotated to the second state, the smooth transition surface fits seamlessly with the surface of the base 10, ensuring a compact and aesthetically pleasing overall structure. Alternatively, when the base 10 is cuboid, the lens holder 21 includes at least one covering surface. When the lens holder 21 is rotated to the second state, this covering surface covers the opening of the mounting groove 110, ensuring a tight fit and smooth transition between the opening and the covering surface.

[0047] The rotation center axis X of the optical lens 22 is parallel to and spaced from the lens center axis O1 of the optical lens 22, so that after the optical lens 22 rotates, it can be offset from the main body of the substrate 10 and exposed outside the substrate 10, which facilitates the user to operate the optical lens.

[0048] In some embodiments, the lens holder has a recessed cavity 200 formed on its side along the optical axis, and the optical lens 22 is disposed in the recessed cavity 200; and satisfies that: the thickness of the optical lens 22 does not exceed the depth of the recessed cavity 200.

[0049] In this embodiment, the optical axis refers to the extension direction of the optical system within the substrate 10. The optical lens 22 is confined within the vertical plane of the optical path. On one hand, the edge of the optical lens 22 is completely wrapped by the lens holder 21. When the lens holder 21 is in the first state, it can cooperate with the substrate 10 to completely block the optical lens 22. Even when the lens holder 21 is in the second state, it can still protect the optical lens 22 at the edge. On the other hand, the rotation mechanism of the optical lens 22 and the lens holder 21 ensures that the central axis of the optical lens 22 is always parallel to the central axis of the optical system within the substrate 10. This ensures that when the lens holder 21 is in the second state, the central axis of the optical lens 22 is completely aligned with the central axis of the optical system within the substrate 10, avoiding optical path deviation and improving the quality of equipment operation.

[0050] The thickness of the optical lens 22 does not exceed the depth of the cavity 200, so that the surface of the lens is flush with or slightly concave with the lens holder 21, preventing the lens from protruding and affecting the rotation of the lens holder 21.

[0051] To enable quick release of the optical lens 22, the following settings can be used:

[0052] Optionally, the optical lens 22 and the mounting cavity 200 are in a transition fit, with the optical lens 22 embedded within the mounting cavity 200. This transition fit typically involves the outer diameter of the optical lens 22 being slightly larger than the inner diameter of the mounting cavity 200, for example, with a single-sided interference of 0.01-0.05 mm. External force is used to compress the optical lens 22, causing elastic deformation between it and the cavity, thus creating a mechanical interlock. It is understood that the lens holder 21 is through-type in the optical axis direction, meaning the optical channel between the mounting cavity 200 and the lens is coaxial. Based on this, in this embodiment, the quick installation and removal method for the optical lens 22 is as follows: during installation, the user inserts the optical lens 22 into the mounting cavity on one side of the lens holder 21 by squeezing; during removal, the user squeezes the optical lens 22 from the other side of the lens holder along the optical channel, causing it to pop out of the mounting cavity, achieving quick removal.

[0053] In another optional embodiment, a protective frame is provided around the optical lens 22, and a corresponding magnetic attraction element is provided between the protective frame and the bottom of the mounting cavity 200. The optical lens 22 is mounted in the mounting cavity 200 by magnetic attraction. For example, a neodymium iron boron (NdFeB) magnet is embedded in the protective frame, and a ferrite or steel sheet is provided at the corresponding position on the bottom of the mounting cavity 200. The optical lens 22 is stably positioned by magnetic attraction, ensuring its precise alignment in the optical path. Preferably, 4 to 8 magnets are evenly distributed to avoid excessive attraction at a single point, which could cause the optical lens 22 to tilt. Similarly, during the disassembly process in this embodiment, the user can also squeeze the optical lens 22 from the other side between the lenses based on the optical channel, causing it to pop out of the mounting cavity 200.

[0054] The above only presents two implementation methods for the quick-release connection between optical lenses 22. In some other implementation methods, it can also be a snap-fit ​​connection, a pin connection, etc. In practical applications, the appropriate method can be flexibly selected according to specific needs to ensure that the optical lenses 22 are both convenient and stable during installation and removal.

[0055] Optionally, the cavity 200 has an operating hole 24 on its opposite side cavity wall along its depth direction. The operating hole 24 is used to facilitate the user's gripping of the optical lens 22. By opening the hole in the cavity wall, the edge of the optical lens 22 is directly exposed, allowing the user to grip it from the side with their fingers or special tools, applying force more accurately and making the disassembly and removal of the optical lens 22 more stable. At the same time, this method is also more suitable for situations where optical lenses 22 are simultaneously placed on both sides between lenses, avoiding the problem of not being able to remove them by pressing from the other side when optical lenses 22 are placed on both sides.

[0056] In some embodiments, the lens module 20 further includes a sealing ring 23 disposed in the mounting cavity 200, the sealing ring 23 being disposed relative to the optical lens 22 near the opening end of the mounting cavity.

[0057] Understandably, the sealing ring 23 is usually made of silicone rubber with good elasticity and wear resistance. In this embodiment, the sealing ring 23 can protrude slightly from the opening end of the mounting cavity 200 so that when the lens holder 21 is in the first state, the sealing ring 23 is squeezed and forms a tight fit with the groove wall of the mounting groove 110, so that the sealing ring 23 can form a good seal on the optical channel around the periphery, preventing dust and moisture from entering and ensuring the stability of the optical system.

[0058] See Figure 3 As shown, in some embodiments, the lens holder 21 includes a first holder 210 and a second holder 211. The first holder 210 is rotatably connected to the base 10, and the second holder 211 is detachably connected to the first holder 210. The optical lens is detachably disposed on the second holder 211.

[0059] In this embodiment, the lens holder 21 includes a first holder 210 and a second holder 211, designed to adapt to different application scenarios and provide different disassembly and replacement options. This configuration is particularly suitable for applications where the substrate 10 is a cuboid. The separate design of the first holder 210 and the second holder 211 reduces the complexity of the overall structure and facilitates quick docking between the first holder 210 and the mounting slot 110. Specifically, the first holder 210 is typically a rectangular strip, with one end connected to the substrate 10 via a rotating shaft, and the other end freely rotatable. The second holder 211 is fixedly connected to the first holder 210 via a snap-fit ​​or magnetic attraction. Furthermore, an optical lens 22 is quickly mounted on the second holder 211, so that rotating the first holder 210 causes the second holder 211 to rotate into position.

[0060] During maintenance of the optical lens 22, the second bracket 211 can be removed from the first bracket 210, or the first bracket 210 can be directly removed from the second bracket 211, thus enabling rapid replacement of the optical lens 22. The disassembly and assembly operations occur outside the mounting slot 110 of the laser processing head, reducing the risk of contamination of the laser channel. This design provides diverse disassembly methods, enhancing not only the flexibility of use but also the ease of equipment maintenance. Users can choose the most suitable disassembly path according to their actual needs.

[0061] Furthermore, to adapt to the shape of the laser processing head and reduce the size of the laser processing head, the position of the rotation center axis X of the optical lens 22 relative to the lens center axis O1 has two possibilities. One is as follows: Figure 3 and Figure 1 As shown, the rotation center axis X of the optical lens 22 is located near the edge of one end of the lens holder 21, so that the lens holder 21 can be rotated out in one direction.

[0062] Another one Figure 3 Based on the above, the rotation center axis X of the optical lens 22 is located near the middle of the lens holder 21 (not shown), and the mounting groove 110 has sufficiently large openings on both sides of the rotation center axis X. When maintaining the optical lens 22, the lens holder 21 can be rotated out of the mounting groove 110 by rotating the first bracket 210 clockwise or counterclockwise.

[0063] Furthermore, to facilitate the rotation process of the lens holder 21 from the first state to the second state, a corresponding assist structure (not shown) can be provided at the free end of the first holder 210, such as an extension arm provided at the free end, which facilitates the user's finger application of force, or a press-and-rebound structure provided between the free end and the base 10, which enables the assist structure to rebound when the free end is pressed, so that the user can further drive the first holder 210 to rotate.

[0064] In some embodiments, a state-holding mechanism is provided between the lens holder 21 and the substrate 10 to ensure the stability of the lens holder 21 in a first state or a second state.

[0065] Optionally, the state-maintaining mechanism includes a rotating shaft and a shaft hole at the rotatable connection between the lens holder 21 and the base 10, forming rotational damping through the fit between the rotating shaft and the shaft hole. The surfaces of the rotating shaft and the shaft hole can be in direct contact, generating damping force through friction between the materials. Alternatively, a damping element, such as an O-ring or a corrugated washer, can be provided between the shaft and the hole, providing damping through element deformation.

[0066] Alternatively, in another option, the state-holding mechanism includes a gasket 120 disposed between the lens holder 21 and the groove walls of the mounting slots 110 on both sides, to generate rotational damping between the lens holder 21 and the mounting slots 110. The gasket 120 can be an elastic material such as rubber, polyurethane, or engineering plastic, generating friction through compression deformation to form rotational damping. When the lens holder 21 rotates, the friction between the gasket 120 and the groove wall / holder must overcome an external force to activate, thereby preventing accidental displacement. Furthermore, a limiting structure can be provided between the rotation axis and the base 10 to ensure effective control of the rotation angle of the lens holder 21 and to maintain it after rotation to the designated position. This state-holding structure can achieve arbitrary angle stopping.

[0067] Alternatively, in another option, the state retention mechanism includes elastic latches (not shown) disposed on the groove walls of the mounting slots 110 on both sides. The elastic latches engage with corresponding slots on the lens holder 21, and automatically engage when the lens holder 21 rotates to the first or second state. When the lens holder 21 rotates to a preset angle (corresponding to the first / second state), the latches are inserted into the slots under elastic restoring force, generating tactile / auditory feedback (a "click" sound). When switching states, additional force is required to disengage the latches.

[0068] It is understood that the above are only examples of two state-maintaining mechanisms proposed in this application. In actual applications, diverse designs can be made according to specific needs to ensure the stability and ease of operation of the lens holder 21 in different states, and users can further make personalized adjustments based on actual needs to optimize the user experience.

[0069] In some embodiments, the substrate 10 includes a first substrate 11 and a second substrate 12 spaced apart from each other, with a shaft 13 between the first substrate 11 and the second substrate 12 to allow the first substrate 11 and the second substrate 12 to rotate relative to each other and become misaligned; and a mounting groove 110 is formed between the first substrate 11 and the second substrate 12, with the lens holder 21 rotatably disposed in the mounting groove 110 and the shaft 13 as the axis of rotation; wherein the lens holder 21 rotates with one of the first substrate 11 and the second substrate 12 to achieve switching between a first state and a second state.

[0070] In this embodiment, the aim is to further adapt to different substrate 10 configurations to facilitate the assembly and disassembly of the optical lens 22. Based on this configuration, when an external force is applied to the first substrate 11 or the second substrate 12, the first substrate 11 and the second substrate 12 can rotate relative to each other around the axis X formed by the shaft 13, due to the shaft 13. During rotation, they gradually shift apart, changing their original relative position, even changing the coincidence of the central axis O of the first substrate 11 and the parallel shift of the central axis O1 of the second substrate 12. During this process, because the lens holder 21 rotates with one of the substrates, it disengages from the mounting groove 110 formed when the two substrates are aligned, thus exposing it outside the substrate 10 and placing it in a second state for easy assembly and disassembly by the user.

[0071] In this configuration, the rotational damping between the lens holder 21 and one of the first or second substrates 11 may be greater than the rotational damping between the lens holder 21 and the other substrate. Due to this difference in rotational damping, the lens holder 21 will preferentially follow the substrate with the greater rotational damping. Alternatively, the lens holder 21 may be connected to one of the substrates using the aforementioned elastic snap-fit ​​mechanism, allowing the lens holder 21 to rotate with that substrate. In both configurations, after the lens holder 21 rotates with one of the substrates, further rotation of the lens holder 21 relative to that substrate is possible. When the lens holder 21 rotates with the substrate until the central axes of the two substrates coincide, a new mounting groove 110 is formed between the two substrates, and the lens holder 21 rotates into the mounting groove 110, placing it in its first state.

[0072] See Figure 1 and Figure 2 As shown, in some embodiments, the laser processing head also includes a protective cover 30, which is used to cover the mounting groove 110 to prevent contaminants from entering the substrate 10 from the opening of the mounting groove 110, providing additional protection.

[0073] Optionally, the protective cover 30 is a sleeve that is movably fitted onto the base 10; or, the protective cover 30 is a cover that is detachably connected to the base 10. That is, the protective cover 30 in this embodiment has two configuration forms. One is a sleeve form, with a larger area, fitted onto the base 10, allowing the sleeve to slide on the base 10. A locking structure is provided between the sleeve and the base 10. This locking structure can be a rotary lock, threaded lock, snap-fit, magnetic attraction, etc., all of which are detachable structures that facilitate operation. Therefore, when it is necessary to replace the optical lens 22, the user only needs to release the lock between the two and push the sleeve to slide, thus exposing the mounting groove 110, further facilitating the replacement of the optical lens 22. Another type is a cover, which has a smaller area and is more targeted at the groove area of ​​the mounting slot 110. It also has a locking structure between the base 10 and the cover, such as a buckle, screw, or magnetic structure. When protection is needed, the cover is locked onto the base 10 to block the groove of the mounting slot 110 for protection. When the optical lens 22 needs to be replaced, the locking structure needs to be released to remove the cover.

[0074] In summary, the technical solution of this application can achieve quick release of the optical lens 22 on the one hand, and provide good protection for the internal components of the substrate 10 on the other hand, thereby improving the overall ease of use and safety and meeting diverse needs.

[0075] The laser processing head can be a handheld laser processing head or a large laser processing device, and it is used in laser welding, laser marking and laser cutting and other processing equipment.

[0076] This application also provides a laser processing apparatus and a laser processing system. The laser processing system includes the laser processing apparatus, and the laser processing apparatus includes a laser processing head. The laser processing apparatus adopts all the technical solutions of all the above-described laser processing head embodiments, and therefore possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0077] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A laser processing head, characterized in that, include: The base (10) is provided with a mounting groove (110); The lens module (20) includes a lens holder (21) and an optical lens (22), wherein the optical lens (22) is quickly connected to the lens holder (21); and the lens holder (21) is rotatably connected to the base (10) so that the lens holder (21) can rotate between a first state and a second state relative to the mounting groove (110). When the lens holder (21) is in the first state, the optical lens (22) is placed in the mounting groove (110); and when the lens holder (21) is in the second state, the optical lens (22) is rotated out of the mounting groove (110) and exposed outside the substrate (10).

2. The laser processing head according to claim 1, characterized in that, The rotation center axis (X) of the optical lens (22) is parallel to and spaced from the lens center axis (O1) of the optical lens (22).

3. The laser processing head according to claim 1, characterized in that, The lens holder (21) has a recessed cavity (200) on its side along the optical axis, and the optical lens (22) is disposed in the recessed cavity (200); and satisfies that: the thickness of the optical lens (22) does not exceed the depth of the recessed cavity (200).

4. The laser processing head according to claim 3, characterized in that, The optical lens (22) and the mounting cavity (200) are in a transition fit, with the optical lens (22) embedded within the mounting cavity (200); or, A protective frame is provided around the optical lens (22), and a corresponding magnetic attraction element is provided between the protective frame and the bottom of the groove of the embedding cavity (200). The optical lens (22) is set in the embedding cavity by magnetic attraction.

5. The laser processing head according to claim 3, characterized in that, The cavity has an operating hole (24) on its opposite side cavity wall along its depth direction, the operating hole (24) being used to facilitate the user to clamp the optical lens (22).

6. The laser processing head according to claim 3, characterized in that, The lens module (20) also includes a sealing ring (23) disposed in the mounting cavity (200), the sealing ring (23) being disposed relative to the optical lens (22) near the opening end of the mounting cavity (200).

7. The laser processing head according to claim 1, characterized in that, The lens holder (21) includes a first holder (210) and a second holder (211). The first holder (210) is rotatably connected to the base (10), and the second holder (211) is detachably connected to the first holder (210). The optical lens (22) is detachably mounted on the second holder (211).

8. The laser processing head according to claim 1, characterized in that, A state-keeping mechanism is provided between the lens holder (21) and the substrate (10) to ensure the stability of the lens holder (21) in the first state or the second state.

9. The laser processing head according to claim 8, characterized in that, The state-maintaining mechanism includes a rotating shaft and a shaft hole at the rotatable connection between the lens holder (21) and the base (10), and rotational damping is formed by the cooperation between the rotating shaft and the shaft hole; or, The state-holding mechanism includes a gasket (120) disposed between the lens holder (21) and the two side walls of the mounting groove (110) to generate rotational damping between the lens holder (21) and the mounting groove (110); or, The state holding mechanism includes elastic buckles provided on both sides of the mounting groove (110). The elastic buckles cooperate with the corresponding slots on the lens holder (21). The elastic buckles automatically engage when the lens holder (21) rotates to the first state or the second state.

10. The laser processing head according to claim 1, characterized in that, The substrate (10) includes a first substrate (11) and a second substrate (12) spaced apart from each other. A shaft (13) is provided between the first substrate (11) and the second substrate (12) to allow the first substrate (11) and the second substrate (12) to rotate relative to each other and become misaligned. A mounting groove (110) is formed between the first substrate (11) and the second substrate (12). The lens holder (21) is rotatably disposed in the mounting groove (110) with the shaft (13) as the axis of rotation. The lens holder (21) rotates with one of the first substrate (11) and the second substrate (12) to switch between the first state and the second state.

11. The laser processing head according to claim 1, characterized in that, It also includes a protective cover (30) for covering the mounting groove (110) to prevent contaminants from entering the substrate (10) from the opening of the mounting groove (110).

12. The laser processing head according to claim 11, characterized in that, The protective cover (30) is a cover sleeve, which is movably fitted onto the base (10); or, The protective cover (30) is a cover, and the cover is detachably connected to the base (10).

13. A laser processing apparatus, characterized in that, Includes the laser processing head as described in any one of claims 1-12.

14. A laser processing system, characterized in that, Includes the laser processing apparatus as described in claim 13.

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