Collimating lens group structure for laser head

Abstract

The utility model relates to the technical field of laser heads, and discloses a collimating lens group structure for a laser head, the collimating lens group structure comprises a lens seat, a lens box detachably connected to the lens seat and a collimating lens detachably connected to the lens seat, the lens box is slidably connected with a lock shaft and rotatably connected with an unlocking block acting on the lock shaft, so that when the unlocking block rotates towards a first direction, the collimating lens is unlocked from the lock shaft. When the unlocking block rotates towards the first direction to fix the lens base, the locking shaft extends into the lens base to fix the lens base, and when the unlocking block rotates towards the second direction, the locking shaft is separated from the lens base to relieve fixation of the lens base, so that in the process of replacing the collimating lens in the application, only the lens box needs to be disassembled and assembled, the situation that the lens base needs to be disassembled and assembled is avoided, and the replacement efficiency is improved. Therefore, the difficulty in replacing the collimating lens is reduced, the time for disassembling and assembling the collimating lens is shortened, and the risk that the collimating lens is polluted is greatly reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of laser heads, and in particular relates to a collimating lens group structure for a laser head. Background Art

[0002] Currently, high-power laser heads on the market all use collimation and focusing to achieve high-focus cutting of medium and thick plates. When cutting plates of different thicknesses, the focus is moved by adjusting the position of the collimating lens group.

[0003] The existing collimator lens group usually uses a motor to drive a lead screw pair to adjust the collimator lens group, that is, the slider of the lead screw pair is connected to the collimator lens group, and the motor drives the lead screw to rotate when working, so that the lead screw and the slider rotate relative to each other, and then the slider drives the collimator lens group to move along the axial direction of the lead screw. Since the cavity for the movement of the collimator lens is large and dust can easily enter, and dust can easily adhere to the surface of the collimator lens, affecting the cutting effect, and over time, it can cause the collimator lens to have burn points or even breakdown, and then the collimator lens needs to be replaced to ensure the cutting effect and reduce the loss of users.

[0004] However, since the collimating lens assembly is connected to the lead screw pair, the lead screw pair needs to be removed when the collimating lens is replaced, which makes the replacement of the collimating lens difficult and takes a long time, and increases the risk of contamination of the collimating lens. Utility Model Content

[0005] The present application provides a collimating lens group structure for a laser head, so as to reduce the difficulty of replacing the collimating lens, improve the efficiency of disassembling and assembling the collimating lens, and reduce the risk of contamination of the collimating lens.

[0006] The technical solution adopted in this application is:

[0007] A collimating lens group structure for a laser head comprises a lens seat, a lens box detachably connected to the lens seat, and a collimating lens detachably connected to the lens box, wherein the mirror box is slidably connected to a locking shaft and rotatably connected to an unlocking block acting on the locking shaft, so that when the unlocking block rotates in a first direction, the locking shaft extends into the lens seat to fix the lens seat, and when the unlocking block rotates in a second direction, the locking shaft separates from the lens seat to release the fixation of the lens seat.

[0008] By adopting the above technical solution, when replacing the collimating lens in the present application, first rotate the unlocking block toward the second direction to separate the lock shaft from the mirror seat, then release the fixation of the mirror box, then remove the mirror box from the mirror seat, and then replace the collimating lens on the mirror box. After the replacement of the collimating lens is completed, the mirror box is installed to the mirror seat, and the unlocking block is rotated toward the first direction to allow the lock shaft to extend into the mirror seat to fix the mirror box and complete the replacement of the collimating lens; in the process of replacing the collimating lens in the present application, only the mirror box needs to be disassembled and assembled, avoiding the need to disassemble and assemble the mirror seat, thereby reducing the difficulty of replacing the collimating lens and shortening the disassembly and assembly time of the collimating lens, so as to greatly reduce the risk of contamination of the collimating lens. At the same time, when releasing the fixation of the mirror box, only the unlocking block needs to be rotated, thereby further reducing the difficulty of replacing the collimating lens, so as to improve the replacement efficiency of the collimating lens, so as to greatly improve the benefits of users.

[0009] Optionally, the unlocking block is provided with a mating groove, and the locking shaft has a mating block extending into the mating groove, and the distance from the groove wall of the mating groove to the side of the unlocking block gradually decreases along the first direction, so that when the unlocking block rotates along the first direction, the locking shaft moves in a direction away from the unlocking block.

[0010] By adopting the above technical solution, since the distance from the groove wall of the matching groove to the side of the unlocking block gradually decreases along the first direction, and the lock shaft has a matching block extending into the matching groove, when the unlocking block is rotated along the first direction, the lock shaft moves in the direction away from the unlocking block, so that the lock shaft extends into the mirror seat and fixes the mirror box; when the unlocking block is rotated along the second direction, the lock shaft moves in the direction close to the unlocking block, so that the lock shaft is separated from the mirror seat and the fixation of the mirror box is released, so as to realize the fixing or release of the mirror box by rotating the unlocking block.

[0011] Optionally, the mirror box is provided with an elastic member acting on the lock shaft, and the elastic member undergoes elastic deformation after the unlocking block rotates toward the second direction.

[0012] By adopting the above technical solution, when assembling the mirror box, the unlocking block is first rotated in the second direction to make the lock shaft move in the direction close to the unlocking block, and then the elastic member is elastically deformed. After the mirror box is installed on the mirror seat, the unlocking block is released, and the elastic member gradually recovers the deformation to make the unlocking block rotate in the first direction, so that the lock shaft extends into the mirror seat under the action of the elastic member to achieve automatic fixation of the mirror box, thereby improving the user experience; at the same time, when the lock shaft moves in the direction close to the unlocking block, it is necessary to overcome the elastic force of the elastic member, thereby increasing the connection stability between the lock shaft and the mirror seat, thereby increasing the stability of the collimating lens.

[0013] Optionally, the locking shaft has a locking section and a connecting section, the diameter of the connecting section is smaller than the diameter of the locking section, the elastic member is sleeved on the connecting section and acts on the locking section, and the locking section is plug-fitted with the mirror holder.

[0014] By adopting the above technical solution, when the unlocking block is rotated toward the second direction, the unlocking block drives the locking shaft to move under the action of the matching groove and the matching block, so that the locking shaft moves in the direction close to the unlocking block, and the locking section applies pressure to the elastic member to cause the elastic member to undergo elastic deformation. When the elastic member is deformed, the connecting section can guide the deformation direction of the elastic member to ensure the elastic effect of the elastic member on the locking shaft, thereby ensuring the stability of the collimating lens.

[0015] Optionally, the locking segment has a guide plane on its circumferential side, the mirror seat has a locking hole for the locking segment to extend into, and the hole wall of the locking hole has a limiting plane that cooperates with the guide plane.

[0016] By adopting the above technical solution, when the unlocking block rotates toward the first direction, the locking shaft moves toward the direction away from the unlocking block. At this time, the guide plane can guide the locking shaft so that the locking section can enter the locking hole more smoothly. At the same time, after the locking section enters the locking hole, the guide plane cooperates with the limiting plane to limit the locking shaft to avoid relative rotation between the locking shaft and the locking hole, thereby avoiding relative rotation between the mirror box and the mirror seat, so as to increase the stability of the mirror box, and further increase the stability of the collimating lens.

[0017] Optionally, one side of the mirror base has a through opening, so that the mirror box enters the interior of the mirror base through the through opening.

[0018] By adopting the above technical solution, when disassembling and assembling the mirror box, it is only necessary to unlock the mirror box and take it out from the through opening, thereby further achieving the effect of facilitating the disassembly and assembly of the mirror box.

[0019] Optionally, the side of the mirror box has a sliding groove, and the mirror base has a limiting pin extending into the sliding groove.

[0020] By adopting the above technical solution, when installing the mirror box, the mirror box is first aligned with the through-hole, and then pressure is applied to the mirror box in the direction of the mirror seat, so that the mirror box moves toward the inside of the mirror seat through the through-hole, so that the limit pin enters the slide groove and slidably cooperates with the slide groove to guide the mirror box, so that the mirror box can be accurately installed in place; at the same time, the limit pin and the slide groove can also limit the mirror seat in cooperation to prevent the mirror seat from rotating around the lock axis, thereby further increasing the stability of the mirror box.

[0021] Optionally, the mirror base has supporting ribs, and the mirror box has an edge resting on the supporting ribs.

[0022] By adopting the above technical solution, after the mirror box is installed on the mirror seat, it rests on the supporting ribs along the edges so that the supporting ribs support the mirror box along the edges, thereby further increasing the stability of the mirror box, thereby ensuring the cutting accuracy and cutting efficiency of the laser tube cutting machine equipped with the collimating lens group structure for the laser head.

[0023] Optionally, the mirror box has a accommodating cavity passing through both ends thereof, the collimating lens is arranged in the accommodating cavity, the cavity wall of the accommodating cavity has a blocking portion located on one side of the collimating lens, and the mirror box is detachably connected to a lens cover plate located on the other side of the collimating lens.

[0024] By adopting the above technical solution, when replacing the collimating lens, first remove the lens cover from the lens box, then take the collimating lens out of the accommodating cavity, then install the new collimating lens into the accommodating cavity, and finally install the lens cover into the lens box to complete the replacement of the collimating lens. In this process, only the lens cover needs to be disassembled and assembled, which also reduces the difficulty of replacing the collimating lens, so as to further improve the replacement efficiency of the collimating lens.

[0025] Optionally, a corrugated gasket is provided between the collimating lens and the lens cover plate;

[0026] And / or, a pressure ring is arranged between the lens cover plate and the collimating lens.

[0027] By adopting the above technical solution, since a corrugated gasket is provided between the collimating lens and the lens cover plate, the corrugated gasket can be pressed against the collimating lens under the action of the lens cover plate, so that the corrugated gasket can play an anti-loosening role to increase the stability of the collimating lens; at the same time, when the collimating lens is deformed by heat, the corrugated gasket can offset the deformation of the collimating lens, reduce the risk of damage caused by thermal expansion of the collimating lens, and thus increase the service life of the collimating lens.

[0028] Since a pressure ring is provided between the collimating lens and the lens cover plate, the collimating lens is fixed by the pressure ring to avoid the situation where the collimating lens may be damaged due to contact between the lens cover plate and the collimating lens, thereby further reducing the difficulty of assembling the collimating lens and improving the service life of the collimating lens.

[0029] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0030] 1. The collimating lens assembly structure for the laser head in the present application includes a lens seat, a lens box detachably connected to the lens seat, and a collimating lens detachably connected to the lens seat. The lens box is slidably connected to a locking shaft and rotatably connected to an unlocking block acting on the locking shaft, so that when the unlocking block rotates in a first direction, the locking shaft extends into the lens seat to fix the lens seat, and when the unlocking block rotates in a second direction, the locking shaft separates from the lens seat to release the fixation of the lens seat, so that in the process of replacing the collimating lens in the present application, only the lens box needs to be disassembled and assembled, avoiding the need to disassemble and assemble the lens seat, thereby reducing the difficulty of replacing the collimating lens and shortening the disassembly and assembly time of the collimating lens, so as to greatly reduce the risk of the collimating lens being contaminated. At the same time, when the mirror box is released, only the unlocking block needs to be rotated, thereby further reducing the difficulty of replacing the collimating lens, so as to improve the replacement efficiency of the collimating lens, so as to greatly improve the benefits of the user.

[0031] 2. The unlocking block in the present application is provided with a matching groove, and the locking shaft has a matching block extending into the matching groove, and the distance from the groove wall of the matching groove to the side of the unlocking block gradually decreases along the first direction, so that when the unlocking block is rotated along the first direction, the locking shaft moves in a direction away from the unlocking block, so that the locking shaft extends into the mirror seat and fixes the mirror box; when the unlocking block is rotated along the second direction, the locking shaft moves in a direction close to the unlocking block, so that the locking shaft is separated from the mirror seat and the fixation of the mirror box is released, so as to realize the fixing or release of the mirror box by rotating the unlocking block.

[0032] 3. The mirror box in the present application is provided with an elastic part acting on the locking shaft. After the unlocking block is rotated toward the second direction, the elastic part undergoes elastic deformation to achieve automatic fixation of the mirror box, thereby improving the user experience; at the same time, when the locking shaft moves toward the direction close to the unlocking block, it is necessary to overcome the elastic force of the elastic part, thereby increasing the connection stability between the locking shaft and the mirror seat, thereby increasing the stability of the collimating lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 This is a schematic structural diagram of the collimating lens assembly structure in one implementation manner of the present application;

[0035] Figure 2 A partial structural cross-sectional view of the collimating lens assembly structure in one implementation manner of the present application;

[0036] Figure 3 A cross-sectional view from another perspective of the collimating lens assembly structure in one embodiment of the present application;

[0037] Figure 4 This is a schematic diagram of the structure of the unlocking block in one implementation of the present application, where the dotted arrow indicates the first direction;

[0038] Figure 5 This is a schematic diagram of the structure of the locking shaft in one embodiment of the present application.

[0039] Reference numerals:

[0040] 1. Mirror seat; 11. Locking hole; 111. Limiting plane; 12. Limiting pin; 13. Support rib;

[0041] 2. Mirror box; 21. Locking shaft; 211. Connecting section; 212. Locking section; 213. Matching block; 214. Guide plane; 22. Unlocking block; 221. Extension block; 222. Operation hole; 223. Matching groove; 23. Unlocking block cover; 231. Through hole; 24. Slide groove; 25. Edge; 26. Accommodating cavity; 261. Blocking part;

[0042] 3. Collimating lens;

[0043] 4. Elastic parts;

[0044] 5. Lens cover;

[0045] 6. Corrugated gasket;

[0046] 7. Press the circle. DETAILED DESCRIPTION

[0047] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0048] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0049] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0050] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0052] Reference Figures 1 to 5 A collimating lens assembly structure for a laser head comprises a lens seat 1, a lens box 2 detachably connected to the lens seat 1, and a collimating lens 3 detachably connected to the lens box 2, the lens box 2 being slidably connected to a locking shaft 21 and rotatably connected to an unlocking block 22 acting on the locking shaft 21, so that when the unlocking block 22 rotates toward a first direction, the locking shaft 21 extends into the lens seat 1 to fix the lens seat 1, and when the unlocking block 22 rotates toward a second direction, the locking shaft 21 is separated from the lens seat 1 to release the fixation of the lens seat 1.

[0053] When replacing the collimating lens 3 in the present application, first rotate the unlocking block 22 in the second direction to separate the locking shaft 21 from the mirror base 1, then release the fixation of the mirror box 2, and then remove the mirror box 2 from the mirror base 1, and then replace the collimating lens 3 on the mirror box 2. After the replacement of the collimating lens 3 is completed, install the mirror box 2 to the mirror base 1, and rotate the unlocking block 22 in the first direction to allow the locking shaft 21 to extend into the mirror base 1, so as to fix the mirror box 2 and complete the replacement of the collimating lens 3.

[0054] In the process of replacing the collimating lens 3 in the present application, it is only necessary to disassemble and assemble the mirror box 2, avoiding the need to disassemble and assemble the mirror base 1, thereby reducing the difficulty of replacing the collimating lens 3 and shortening the disassembly and assembly time of the collimating lens 3, thereby greatly reducing the risk of contamination of the collimating lens 3. At the same time, when the mirror box 2 is released, it is only necessary to rotate the unlocking block 22, thereby further reducing the difficulty of replacing the collimating lens 3, thereby improving the replacement efficiency of the collimating lens 3, and greatly improving the benefits of the user.

[0055] It should be noted that the first direction and the second direction mentioned in the present application are opposite to each other. When the first direction is clockwise, the second direction is counterclockwise; when the first direction is counterclockwise, the second direction is clockwise.

[0056] The present application does not specifically limit the number of the locking shafts 21. Preferably, refer to Figure 2 , two locking shafts 21 are provided and are respectively located on opposite sides of the unlocking block 22 to increase the fixing point of the mirror box 2, thereby increasing the fixing effect of the mirror box 2 and increasing the stability of the collimating lens 3. In other embodiments, only one locking shaft 21 may be provided.

[0057] The present application does not make any specific limitation on the installation method of the unlocking piece and the lock shaft 21. Preferably, the mirror box 2 is provided with a mounting cavity whose opening is located on the side of the mirror box 2 and a mounting hole connected to the mounting cavity, and the opening of the mounting hole is located on the side of the mirror box 2. The unlocking block 22 is rotatably connected to the mounting hole, and the lock shaft 21 is slidably connected to the mounting cavity, so as to increase the stability of the unlocking block 22 and the lock shaft 21, and at the same time achieve the effect of facilitating the installation of the lock shaft 21 and the unlocking block 22.

[0058] Better, refer to Figure 1 , Figure 2 and Figure 3 The side of the mirror box 2 is provided with an unlocking block cover plate 23 located at the opening of the mounting hole, so that the unlocking block cover plate 23 blocks the unlocking block 22 to increase the connection stability between the unlocking block 22 and the mirror box 2. The unlocking block cover plate 23 has a through hole 231, and the unlocking block 22 has an extension block 221 extending into the through hole 231. The extension block 221 is provided with an operating hole 222 with a polygonal cross-section shape, so that the staff can use a tool adapted to the shape of the operating hole 222 to rotate the unlocking block 22.

[0059] In other embodiments, the unlocking block 22 and the locking shaft 21 may also be installed outside the mirror box 2 .

[0060] The present application does not specifically limit the connection method between the unlocking block 22 and the lock shaft 21, and it can adopt any one of the following embodiments:

[0061] Embodiment 1. In this embodiment, referring to Figure 2 , Figure 3 and Figure 4 The unlocking block 22 is provided with a matching groove 223, and the lock shaft 21 has a matching block 213 extending into the matching groove 223. The distance from the groove wall of the matching groove 223 to the side of the unlocking block 22 gradually decreases along the first direction, so that when the unlocking block 22 rotates along the first direction, the lock shaft 21 moves in a direction away from the unlocking block 22.

[0062] Since the distance from the groove wall of the matching groove 223 to the side of the unlocking block 22 gradually decreases along the first direction, and the lock shaft 21 has a matching block 213 extending into the matching groove 223, when the unlocking block 22 rotates along the first direction, the lock shaft 21 moves in the direction away from the unlocking block 22, so that the lock shaft 21 extends into the mirror base 1 and fixes the mirror box 2; when the unlocking block 22 rotates along the second direction, the lock shaft 21 moves in the direction close to the unlocking block 22, so that the lock shaft 21 is separated from the mirror base 1 and the fixation of the mirror box 2 is released, so as to realize the fixing or release of the mirror box 2 by rotating the unlocking block 22.

[0063] Better, refer to Figure 4 The matching groove 223 is an arc-shaped groove, and the matching block 213 is a columnar structure. The peripheral surface of the matching block 213 abuts against the two opposite groove walls of the matching groove 223 to ensure the smooth movement of the locking shaft 21.

[0064] Embodiment 2. In this embodiment, the unlocking block 22 has a plurality of first teeth arranged in sequence along its circumference, and the lock shaft 21 has a plurality of second teeth arranged in sequence along its length direction. The first teeth are meshed with the second teeth for transmission connection, so that when the unlocking block 22 rotates in the first direction, the lock shaft 21 moves in a direction away from the unlocking block 22 under the cooperation of the first teeth and the second teeth. When the unlocking block 22 rotates in the second direction, the lock shaft 21 moves in a direction close to the unlocking block 22 under the cooperation of the first teeth and the second teeth.

[0065] In a preferred embodiment, referring to Figure 2 The mirror box 2 is provided with an elastic member 4 acting on the lock shaft 21, and the elastic member 4 undergoes elastic deformation after the unlocking block 22 rotates toward the second direction.

[0066] When assembling the mirror box 2, first rotate the unlocking block 22 in the second direction to make the locking shaft 21 move in the direction close to the unlocking block 22, and then make the elastic member 4 elastically deform. After the mirror box 2 is installed to the mirror base 1, release the unlocking block 22, and the elastic member 4 gradually recovers its deformation to make the unlocking block 22 rotate in the first direction, so that the locking shaft 21 extends into the mirror base 1 under the action of the elastic member 4, so as to realize automatic fixation of the mirror box 2 and improve the user experience; at the same time, when the locking shaft 21 moves in the direction close to the unlocking block 22, it is necessary to overcome the elastic force of the elastic member 4, thereby increasing the connection stability of the locking shaft 21 and the mirror base 1, so as to increase the stability of the collimating lens 3.

[0067] The present application does not specifically limit the structure of the elastic member 4. Preferably, the elastic member 4 is a spring to ensure the elastic effect on the lock shaft 21. In other embodiments, the elastic member 4 can also be an elastic column or elastic sheet with a hollow interior and other elastic structures.

[0068] The present application does not specifically limit the structure of the lock shaft 21. Figure 5 The lock shaft 21 has a locking section 212 and a connecting section 211. The diameter of the connecting section 211 is smaller than the diameter of the locking section 212. The elastic member 4 is sleeved on the connecting section 211 and acts on the locking section 212. The locking section 212 is plug-fitted with the mirror holder 1. The matching block 213 is arranged at one end of the connecting section 211 away from the locking section 212.

[0069] When the unlocking block 22 is rotated toward the second direction, the unlocking block 22 drives the locking shaft 21 to move under the action of the matching groove 223 and the matching block 213, so that the locking shaft 21 moves toward the direction close to the unlocking block 22, and the locking segment 212 applies pressure to the elastic member 4 to cause the elastic member 4 to undergo elastic deformation. When the elastic member 4 is deformed, the connecting segment 211 can guide the deformation direction of the elastic member 4 to ensure the elastic effect of the elastic member 4 on the locking shaft 21, thereby ensuring the stability of the collimating lens 3.

[0070] In a preferred embodiment, referring to Figure 2 and Figure 5 The locking section 212 has a guide plane 214 on its circumferential side, the mirror base 1 has a locking hole 11 for the locking section 212 to extend into, and the hole wall of the locking hole 11 has a limiting plane 111 that cooperates with the guide plane 214 .

[0071] Specifically, the guide plane 214 is arranged to be inclined toward the central axis of the lock shaft 21 along a direction away from the unlocking block 22, so that when the unlocking block 22 rotates toward the first direction, the lock shaft 21 moves toward the direction away from the unlocking block 22. At this time, the guide plane 214 can guide the lock shaft 21 so that the locking section 212 can enter the locking hole 11 more smoothly. At the same time, after the locking section 212 enters the locking hole 11, the guide plane 214 cooperates with the limiting plane 111 to limit the lock shaft 21 to avoid relative rotation between the lock shaft 21 and the locking hole 11, thereby avoiding relative rotation between the mirror box 2 and the mirror base 1, so as to increase the stability of the mirror box 2, and further increase the stability of the collimating lens 3.

[0072] In other embodiments, the locking section 212 may be omitted, and one end of the elastic member 4 is fixedly connected to the connecting section 211 , and the connecting section 211 directly extends into the locking groove.

[0073] In a preferred embodiment, one side of the mirror base 1 has a through opening, so that the mirror box 2 can enter the interior of the mirror base 1 through the through opening.

[0074] That is to say, the through opening is located at the side of the mirror base 1, so that the mirror base 1 is C-shaped. When disassembling and assembling the mirror box 2, it is only necessary to unlock the mirror box 2 and take the mirror box 2 out of the through opening, thereby further achieving the effect of facilitating the disassembly and assembly of the mirror box 2.

[0075] In a preferred embodiment, referring to Figure 2 The side of the mirror box 2 has a slide groove 24 , and the mirror base 1 has a limiting pin 12 extending into the slide groove 24 .

[0076] When installing the mirror box 2, first align the mirror box 2 with the through-hole, and then apply pressure to the mirror box 2 in the direction of the mirror base 1, so that the mirror box 2 moves toward the inside of the mirror base 1 through the through-hole, so that the limit pin 12 enters the slide groove 24 and slidably cooperates with the slide groove 24 to guide the mirror box 2, so that the mirror box 2 can be accurately installed in place; at the same time, the limit pin 12 cooperates with the slide groove 24 to limit the mirror base 1, so as to prevent the mirror base 1 from rotating around the lock shaft 21, thereby further increasing the stability of the mirror box 2.

[0077] The present application does not specifically limit the connection method between the limit pin 12 and the mirror base 1. Preferably, the mirror base 1 has a connection hole for the limit pin 12 to extend into, and the limit pin 12 has an annular rib that contacts the inner side of the mirror base 1 to limit the limit pin 12, thereby increasing the connection stability between the limit pin 12 and the mirror base 1 and reducing the production difficulty of the mirror base 1. In other embodiments, the limit pin 12 can also be integrally formed with the mirror base 1.

[0078] In a preferred embodiment, referring to Figure 1 and Figure 2 The mirror base 1 has a supporting rib 13 , and the mirror box 2 has an edge 25 that rests on the supporting rib 13 .

[0079] After the mirror box 2 is installed on the mirror base 1, the edge 25 rests on the support rib 13, so that the support rib 13 supports the mirror box 2 through the edge 25, so as to further increase the stability of the mirror box 2, thereby ensuring the cutting accuracy and cutting efficiency of the laser tube cutting machine equipped with the collimating lens group structure for the laser head.

[0080] In a preferred embodiment, referring to Figure 3 The mirror box 2 has a receiving cavity 26 passing through both ends thereof, the collimating lens 3 is arranged in the receiving cavity 26, the cavity wall of the receiving cavity 26 has a blocking portion 261 located on one side of the collimating lens 3, and the mirror box 2 is detachably connected to a lens cover plate 5 located on the other side of the collimating lens 3.

[0081] When replacing the collimating lens 3, first remove the lens cover 5 from the mirror box 2, then take the collimating lens 3 out of the accommodating cavity 26, install the new collimating lens 3 into the accommodating cavity 26, and finally install the lens cover 5 into the mirror box 2 to complete the replacement of the collimating lens 3. In this process, only the lens cover 5 needs to be disassembled and assembled, which also reduces the difficulty of replacing the collimating lens 3, so as to further improve the replacement efficiency of the collimating lens 3.

[0082] The present application does not specifically limit the structure of the blocking portion 261. Preferably, refer to Figure 3 The blocking portion 261 is located in the annular structure provided on the wall of the accommodating cavity 26 to increase the contact area between the blocking portion 261 and the collimating lens 3 to increase the stability of the collimating lens 3 and reduce the pressure between the blocking portion 261 and the collimating lens 3 to avoid possible damage to the collimating lens 3, thereby further reducing the difficulty of assembling the collimating lens 3.

[0083] In a preferred embodiment, the lens cover plate 5 has a fixing portion extending into the accommodating cavity 26 and a connecting portion located outside the accommodating cavity 26 so that the fixing portion applies pressure to the alignment lens 3 , and the connecting portion is detachably connected to the lens box 2 .

[0084] The present application does not specifically limit the structure of the fixing portion. Preferably, the fixing portion is an annular structure to increase the stability of the collimating lens 3. In other implementation examples, the fixing portion may also be a rib plate structure arranged at intervals along the circumference of the accommodating cavity 26.

[0085] The present application does not specifically limit the structure of the connection part. Preferably, the connection part is a sheet structure to increase the connection area between the connection part and the mirror box 2, thereby increasing the connection stability between the lens cover plate 5 and the mirror box 2. In other implementation examples, the connection part can also be a strip structure.

[0086] The present application does not specifically limit the detachable connection mode between the connection part and the mirror box 2. Preferably, the connection part is detachably connected to the mirror box 2 by bolts to increase the connection stability between the connection part and the mirror box 2. In other embodiments, the connection part can also be detachably connected to the mirror box 2 by a snap-on structure.

[0087] In a preferred embodiment, referring to Figure 3 A corrugated gasket 6 is arranged between the collimating lens 3 and the lens cover plate 5.

[0088] Since a corrugated gasket 6 is provided between the collimating lens 3 and the lens cover plate 5, the corrugated gasket 6 can be pressed against the collimating lens 3 under the action of the lens cover plate 5, so that the corrugated gasket 6 can play an anti-loosening role to increase the stability of the collimating lens 3; at the same time, when the collimating lens 3 is deformed by heat, the corrugated gasket 6 can offset the deformation of the collimating lens 3, reduce the risk of damage caused by thermal expansion of the collimating lens 3, and thereby increase the service life of the collimating lens 3.

[0089] In a preferred embodiment, referring to Figure 3 A pressing ring 7 is arranged between the lens cover plate 5 and the collimating lens 3, and the corrugated gasket 6 is located on the side of the pressing ring 7 away from the collimating lens 3 and contacts the pressing ring 7, so that the corrugated gasket 6 presses the collimating lens 3 through the pressing ring 7 to avoid the contact between the lens cover plate 5 and the collimating lens 3, which may cause damage to the collimating lens 3, so as to further reduce the difficulty of assembling the collimating lens 3 and improve the service life of the collimating lens 3.

[0090] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0091] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0092] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A collimating lens assembly structure for a laser head, characterized in that: The invention comprises a mirror seat (1), a mirror box (2) detachably connected to the mirror seat (1), and a collimating lens (3) detachably connected to the mirror box (2); the mirror box (2) is slidably connected to a locking shaft (21) and rotatably connected to an unlocking block (22) acting on the locking shaft (21), so that when the unlocking block (22) rotates in a first direction, the locking shaft (21) extends into the mirror seat (1) to fix the mirror seat (1); and when the unlocking block (22) rotates in a second direction, the locking shaft (21) separates from the mirror seat (1) to release the fixation of the mirror seat (1).

2. The collimating lens assembly structure for a laser head according to claim 1, characterized in that: The unlocking block (22) is provided with a matching groove (223), the locking shaft (21) has a matching block (213) extending into the matching groove (223), and the distance from the groove wall of the matching groove (223) to the side surface of the unlocking block (22) gradually decreases along a first direction, so that when the unlocking block (22) rotates along the first direction, the locking shaft (21) moves in a direction away from the unlocking block (22).

3. The collimating lens assembly structure for a laser head according to claim 1, characterized in that: The mirror box (2) is provided with an elastic member (4) acting on the locking shaft (21), and the elastic member (4) undergoes elastic deformation after the unlocking block (22) rotates in the second direction.

4. The collimating lens assembly structure for a laser head according to claim 3, characterized in that: The locking shaft (21) comprises a locking section (212) and a connecting section (211); the diameter of the connecting section (211) is smaller than the diameter of the locking section (212); the elastic member (4) is sleeved on the connecting section (211) and acts on the locking section (212); the locking section (212) is plug-fitted with the mirror base (1).

5. The collimating lens assembly structure for a laser head according to claim 4, characterized in that: The locking section (212) has a guide plane (214) on its circumferential side, the mirror seat (1) has a locking hole (11) for the locking section (212) to extend into, and the hole wall of the locking hole (11) has a limiting plane (111) that cooperates with the guide plane (214).

6. The collimating lens assembly structure for a laser head according to claim 1, characterized in that: One side of the mirror base (1) has a through opening, so that the mirror box (2) can enter the interior of the mirror base (1) through the through opening.

7. The collimating lens assembly structure for a laser head according to claim 1, characterized in that: The side of the mirror box (2) is provided with a slide groove (24), and the mirror base (1) is provided with a limit pin (12) extending into the slide groove (24).

8. The collimating lens assembly structure for a laser head according to claim 1, characterized in that: The mirror base (1) has a supporting rib (13), and the mirror box (2) has an edge (25) that rests on the supporting rib (13).

9. The collimating lens assembly structure for a laser head according to claim 1, characterized in that: The mirror box (2) has a receiving cavity (26) passing through both ends thereof, the collimating lens (3) is arranged in the receiving cavity (26), the cavity wall of the receiving cavity (26) has a blocking portion (261) located on one side of the collimating lens (3), and the mirror box (2) is detachably connected to a lens cover plate (5) located on the other side of the collimating lens (3).

10. The collimating lens assembly structure for a laser head according to claim 9, characterized in that: A corrugated gasket (6) is provided between the collimating lens (3) and the lens cover plate (5); And / or, a pressure ring (7) is provided between the lens cover plate (5) and the collimating lens (3).

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