Aperture adjustment mechanism and laser device

Abstract

This application provides an aperture adjustment mechanism and a laser device. The aperture adjustment mechanism includes a front aperture and an adjustment base. The adjustment base includes a first connecting seat, a second connecting seat, a third connecting seat, a first limiting member, and a second limiting member. The first connecting seat is connected to the front aperture whose central axis extends along a first direction. The second connecting seat has a groove formed along the first direction, and the first connecting seat is at least partially housed in the groove and slidably connected to the second connecting seat along a second direction. The second connecting seat is slidably connected to the third connecting seat along a third direction. The first limiting member is connected to the first connecting seat and the second connecting seat and is used to limit the relative movement between the first connecting seat and the second connecting seat. The second limiting member is connected to the second connecting seat and the third connecting seat and is used to limit the relative movement between the second connecting seat and the third connecting seat. By partially accommodating the first connecting seat in the groove of the second connecting seat, the thickness of the adjustment base is reduced.

Description

Technical Field

[0001] This application belongs to the field of optical device technology, and in particular relates to an aperture adjustment mechanism and a laser device. Background Technology

[0002] In fields such as laser processing, optical measurement, and laser communication, the pre-aperture is a key component for optimizing laser beam quality, and its position adjustment accuracy directly affects equipment performance. To achieve precise alignment between the pre-aperture and the laser beam, an aperture adjustment mechanism is often required to adjust the radial position of the pre-aperture.

[0003] Currently, the thickness of the relevant aperture adjustment mechanism along the axial direction of the front aperture is generally large, occupying a large amount of space in the laser equipment and limiting the miniaturization and integration design of the laser equipment. Utility Model Content

[0004] The purpose of this application is to provide an aperture adjustment mechanism and a laser device, aiming to solve the technical problem that the current aperture adjustment mechanism has a large thickness in the axial direction of the front aperture, which limits the miniaturization and integrated design of the laser device.

[0005] The embodiments of this application are implemented as follows: According to a first aspect of the embodiments of this application, an aperture adjustment mechanism is provided, including a front aperture and an adjustment base. The adjustment base includes a first connecting seat, a second connecting seat, and a third connecting seat. The first connecting seat is connected to the front aperture, and the central axis of the front aperture extends along a first direction. The second connecting seat has a sliding groove along the first direction, and the first connecting seat is at least partially received in the sliding groove and slidably connected to the second connecting seat along a second direction, which is perpendicular to the first direction. The second connecting seat is slidably connected to the third connecting seat along a third direction, which is perpendicular to both the first and second directions. Both the second connecting seat and the third connecting seat avoid the front aperture in the first direction.

[0006] One possible scenario is that the first connector has a first through hole along the first direction, the second connector has a second through hole along the first direction, the third connector has a third through hole along the third direction, the front aperture is at least partially located in the first through hole, the second through hole and the third through hole are at least partially overlapped in the first direction, and both avoid the front aperture.

[0007] One possible scenario is that the adjusting base further includes a first limiting member and a second limiting member, one of the first connecting seat and the second connecting seat is detachably connected to the first limiting member and can clamp the other of the first connecting seat and the second connecting seat together with the first limiting member; one of the second connecting seat and the third connecting seat is detachably connected to the second limiting member and can clamp the other of the second connecting seat and the third connecting seat together with the second limiting member.

[0008] One possible scenario is that the first connecting seat has a first hole along the first direction, the length direction of the first hole is the second direction, the first limiting member includes a first rod and a first cap, the first rod passes through the first hole and is detachably connected to the second connecting seat, the first cap is connected to the end of the first rod away from the second connecting seat, and together with the second connecting seat, clamps the first connecting seat;

[0009] And / or, the second connecting seat has a second hole along the first direction, the length direction of the second hole is the third direction, the second limiting member includes a second rod and a second cap, the second rod passes through the second hole and is detachably connected to the third connecting seat, the second cap is connected to the end of the second rod away from the third connecting seat, and together with the third connecting seat, clamps the second connecting seat.

[0010] One possible scenario is that the slide has two first groove sidewalls opposite each other in the second direction and two second groove sidewalls opposite each other in the third direction. The two second groove sidewalls are parallel, the distance between the two first groove sidewalls is greater than the width of the first connecting seat in the second direction, and the first connecting seat has two back-to-back first sides in the third direction. The two first sides are respectively clearance-fitted with one of the second groove sidewalls.

[0011] One possible scenario is that the aperture adjustment mechanism further includes a first adjustment member, which is rotatably connected to a second connecting seat and threadedly connected to the first connecting seat, with the rotation axis of the first adjustment member extending along the second direction.

[0012] One possible scenario is that the second connecting seat has two opposing second side surfaces in the second direction. The second connecting seat has a first limiting groove and a first rotating groove on the surface facing away from the third connecting seat. The first limiting groove is located between the second side surface and the sliding groove. The first rotating groove is located between the first limiting groove and the sliding groove and communicates with the first limiting groove and the sliding groove along the second direction. The groove side wall of the first limiting groove away from the first rotating groove has a first through hole that extends to the second side surface. The first adjusting member includes a first limiting part and a first screw part connected to the first limiting part. The first limiting part is at least partially housed in the first limiting groove. The first limiting part and the two groove side walls of the first limiting groove in the second direction are clearance-fitted. The first screw part is rotatably inserted into the first rotating groove and threadedly connected to the first connecting seat.

[0013] One possible scenario is that the aperture adjustment mechanism further includes a second adjustment member, which is rotatably connected to and threadedly connected to a third connecting seat, and the rotation axis of the second adjustment member extends along the third direction.

[0014] One possible scenario is that the third connecting seat has two opposing third side surfaces in the third direction, the surface of the third connecting seat in the first direction is provided with a second limiting groove and a second rotating groove, the third connecting seat is provided with a third through hole, the second connecting seat has a movable part received in the third through hole, the movable part can move in the through hole along the third direction, the second limiting groove is located between the third side surface and the third through hole, the second rotating groove is located between the second limiting groove and the third through hole, and communicates with the second limiting groove and the third through hole along the third direction, the groove side wall of the second limiting groove away from the second rotating groove is provided with a third through hole that extends to the third side surface, the second adjusting member includes a second limiting part and a second screw part connected to the second limiting part, the second limiting part is at least partially received in the second limiting groove, the second limiting part and the second limiting groove are clearance-fitted on both groove side walls in the third direction, the second screw part is rotatably passed through the second rotating groove and is threadedly connected to the movable part.

[0015] According to a second aspect of the present application, a laser device is provided, including a laser generating mechanism and an aperture adjustment mechanism as described above. The laser generating mechanism is capable of generating a laser beam, and the aperture adjustment mechanism is disposed in the emission direction of the laser beam. The central axis of the front aperture is parallel to or coincides with the central axis of the laser beam.

[0016] The technical advantages of this application embodiment compared to the prior art are as follows: By partially accommodating the first connecting seat in the groove of the second connecting seat, the total thickness of the first connecting seat and the second connecting seat in the X-axis direction after installation is less than the sum of the thicknesses of the first connecting seat and the second connecting seat. This achieves a reduction in the thickness of the adjusting base, reduces the space occupied inside the laser equipment, provides more installation space for other optical components and mechanical parts, reduces the overall size and weight of the laser equipment, and is conducive to the miniaturization and integration design of the laser equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application 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.

[0018] Figure 1 This is a three-dimensional structural diagram of the aperture adjustment mechanism provided in the embodiments of this application;

[0019] Figure 2 yes Figure 1 A front view of the aperture adjustment mechanism provided in the image;

[0020] Figure 3 yes Figure 1 The exploded view of the aperture adjustment mechanism provided in the image.

[0021] Explanation of reference numerals in the attached figures:

[0022] 10. Front aperture; 101. Light-transmitting hole; 20. Adjustable base; 21. First connecting seat; 2101. First side; 2102. First front; 211. First through hole; 212. First slotted hole; 22. Second connecting seat; 22a. Moving part; 22b. Connecting part; 2201. Second side; 2202. Second front; 221. Slide groove; 2211. First groove side wall; 2212. Second groove side wall; 222. Second through hole; 223. Second slotted hole; 224. First threaded hole; 225. First limiting groove; 226. First rotating groove; 227. First through hole; 23. Third connecting seat; 23a. Base plate ; 23b, Flanged plate; 23b1, Connecting hole; 2301, Third side surface; 2302, Third front surface; 231, Third through hole; 2311, First hole wall surface; 2312, Second hole wall surface; 232, Second threaded hole; 233, Second limiting groove; 234, Second rotating groove; 235, Second through hole; 24, First limiting member; 241, First rod part; 242, First cap part; 25, Second limiting member; 251, Second rod part; 252, Second cap part; 26, First adjusting member; 261, First limiting part; 262, First screw part; 27, Second adjusting member; 271, Second limiting part; 272, Second screw part. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0024] In the description of this application, it should be understood that the terms "length", "width", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0028] This application provides a laser device, which includes a laser generating mechanism and an aperture adjustment mechanism. The laser generating mechanism generates a laser beam, and the aperture adjustment mechanism is disposed in the emission direction of the laser beam. The aperture adjustment mechanism includes a front aperture and an adjustment base. The front aperture is mounted on the adjustment base, and the axis of the front aperture is the same as the emission direction of the laser beam. When the axis of the front aperture does not coincide with the axis of the laser beam, the adjustment base can adjust the position of the front aperture until the axis of the front aperture coincides with the axis of the laser beam.

[0029] Ideally, the laser beam emitted from a laser generating mechanism should exhibit a Gaussian distribution, meaning its energy decreases a Gaussian function from the central axis towards the edges, with the highest energy density at the central axis and gradually decreasing towards the edges. However, due to defects in the resonant cavity within the laser generating mechanism, lens reflection / scattering, and higher-order modes, non-Gaussian "stray light" can appear around the laser beam. A light-transmitting aperture is formed in the center of the pre-aperture, which limits the beam range through its diameter. Assuming the aperture diameter of the pre-aperture matches the laser beam, if the central axis of the pre-aperture deviates from the central axis of the laser beam, a portion of the laser beam will be blocked, resulting in energy loss, and stray light may leak through the aperture, reducing or eliminating the filtering effect. When the pre-aperture is adjusted so that its central axis coincides with the central axis of the laser beam, the laser beam can pass through the aperture without obstruction, while all stray light around the laser beam is completely blocked by the aperture baffle, resulting in a purer energy distribution, closer to the ideal Gaussian distribution.

[0030] The laser equipment includes, but is not limited to, laser processing equipment (such as laser drilling machines, laser cutting machines, laser marking machines, laser welding machines, etc.), laser surgical equipment (such as femtosecond laser surgical instruments, CO2 laser beauty instruments, etc.), laser measuring equipment (such as laser spectrometers, laser interferometers, laser velocimeters, etc.), and laser communication equipment (such as laser projectors, fiber optic communication lasers, etc.). The laser generating mechanism can be a laser emitter, in which case the aperture adjustment mechanism is an independent part of the laser emitter and can be installed at the output end of the laser emitter. Alternatively, the laser generating mechanism can be a laser generating module within the laser emitter, in which case the aperture adjustment mechanism can be integrated into the laser emitter; there are no restrictions on this.

[0031] Currently, most aperture adjustment mechanisms employ a multi-layered stacked structure for their bases, achieving two-dimensional adjustment through the stacking of multiple slider guide assemblies or complex gear transmission modules. This results in a generally large thickness of the aperture adjustment mechanism along the axial direction of the front aperture, occupying a significant amount of space within the laser equipment. In highly integrated laser devices, such as compact laser drilling machines or portable laser measuring instruments, the internal space is already very limited. An excessively thick aperture adjustment mechanism severely encroaches on the installation space for other optical components and mechanical parts, increasing the overall size and weight of the laser equipment and limiting its miniaturization and integration design.

[0032] To address the aforementioned issues, this application provides an aperture adjustment mechanism. The adjustment base of this aperture adjustment mechanism has a small thickness along the axial direction of the front aperture and can achieve separation of sliding and restriction through a simple structure. This reduces the space occupied by the adjustment base within the laser device, thereby reducing the overall size and weight of the laser device and facilitating the miniaturization and integration of the laser device.

[0033] In the embodiments of this application, please refer to Figure 1 and Figure 2 The aperture adjustment mechanism includes a front aperture 10 and an adjustment base 20. The front aperture 10 is mounted on the adjustment base 20 and is annular, with a light-transmitting hole 101 formed in the center. The central axis of the front aperture 10 is the central axis of the light-transmitting hole 101, which extends along a first direction. The adjustment base 20 can drive the front aperture 10 to move along a second direction and a third direction until the front aperture 10 moves to a preset position. The second direction is perpendicular to the first direction, and the third direction is perpendicular to both the first and second directions. When the laser generating mechanism emits a laser beam, the front aperture 10 at the preset position allows the laser beam to pass through unobstructed while blocking stray light from the laser beam. For ease of description, in the following embodiments, the first direction is the X-axis, the second direction is the Z-axis, and the third direction is the Y-axis.

[0034] Specifically, the adjustment base 20 includes a first connecting seat 21, a second connecting seat 22, and a third connecting seat 23. The first connecting seat 21 is connected to a front aperture 10, and the first connecting seat 21 avoids the front aperture 10 in the X-axis direction. The second connecting seat 22 has a groove 221 along the X-axis direction, meaning the depth of the groove 221 is in the X-axis direction. The first connecting seat 21 is at least partially housed within the groove 221 and is slidably connected to the second connecting seat 22 along the Z-axis direction. That is, the first connecting seat 21 can reciprocate relative to the second connecting seat 22 along the Z-axis direction. The sidewall of the groove 221 can guide and limit the first connecting seat 21, or it can choose not to contact the first connecting seat 21; this is not a limitation. The second connecting seat 22 is slidably connected to the third connecting seat 23 along the Y-axis direction, meaning the second connecting seat 22 can reciprocate relative to the third connecting seat 23 along the Y-axis direction. Both the second connecting seat 22 and the third connecting seat 23 are positioned to avoid obstructing the laser beam passing through the front aperture 10 in the X-axis direction. The third connecting seat 23 can be directly connected to the laser generating mechanism or other structural components of the laser equipment, such as the housing of the laser equipment, to achieve indirect connection with the laser generating mechanism through these other structural components.

[0035] The adjustment base 20 reduces the thickness of the adjustment base 20 by partially housing the first connecting seat 21 within the groove 221 of the second connecting seat 22, so that the total thickness of the first connecting seat 21 and the second connecting seat 22 in the X-axis direction after installation is less than the sum of the thicknesses of the first connecting seat 21 and the second connecting seat 22. This reduces the space occupied inside the laser equipment, provides more installation space for other optical components and mechanical parts, and reduces the overall size and weight of the laser equipment, which is beneficial for the miniaturization and integration design of the laser equipment.

[0036] Please see Figure 2 It is understood that the third connecting seat 23 may include a base plate 23a and a flange plate 23b. The flange plate 23b is disposed on the edge of the base plate 23a and perpendicular to the base plate 23a. The second connecting seat 22 can be connected to the base plate 23a. The flange plate 23b may have a connecting hole 23b1, through which fasteners can pass to be fixedly connected with other structural components of the laser equipment. The edge of the second connecting seat 22 in the Z-axis direction may be flush with the edge of the third connecting seat 23 in the Z-axis direction to further reduce the space occupied by the adjusting base 20 within the laser equipment.

[0037] Please see Figure 2 and Figure 3It is understood that the adjustment base 20 also includes a first limiting member 24 and a second limiting member 25. The first limiting member 24 is connected to the first connecting seat 21 and the second connecting seat 22 and is used to limit the separation of the first connecting seat 21 and the second connecting seat 22. The second limiting member 25 is connected to the second connecting seat 22 and the third connecting seat 23 and is used to limit the separation of the second connecting seat 22 and the third connecting seat 23.

[0038] Please see Figure 2 and Figure 3 In one embodiment, one of the first connecting seat 21 and the second connecting seat 22 is detachably connected to the first limiting member 24 and can clamp the other of the first connecting seat 21 and the second connecting seat 22 together with the first limiting member 24. It is understood that the first limiting member 24 can be detachably connected to the first connecting seat 21 and can clamp the second connecting seat 22 together with the first connecting seat 21, or it can be detachably connected to the second connecting seat 22 and can clamp the first connecting seat 21 together with the second connecting seat 22.

[0039] One of the second connecting seat 22 and the third connecting seat 23 is detachably connected to the second limiting member 25 and can clamp the other of the second connecting seat 22 and the third connecting seat 23 together with the second limiting member 25. It can be understood that the second limiting member 25 can be detachably connected to the second connecting seat 22 and can clamp the third connecting seat 23 together with the second connecting seat 22, or it can be detachably connected to the third connecting seat 23 and can clamp the second connecting seat 22 together with the third connecting seat 23.

[0040] It should be noted that the aforementioned detachable connection methods include, but are not limited to, threaded connections, riveting, snap-fitting, interference fits, and adhesive bonding. When the first limiting member 24 is removed, it releases its clamping action, and the first connecting seat 21 can slide relative to the second connecting seat 22 along the Z-axis. When the first limiting member 24 clamps, the friction between the first connecting seat 21 and the second connecting seat 22 increases, thereby restricting their relative movement. When the second limiting member 25 is removed, it releases its clamping action, and the second connecting seat 22 can slide relative to the third connecting seat 23 along the Y-axis. When the second limiting member 25 clamps, the friction between the second connecting seat 22 and the third connecting seat 23 increases, thereby restricting their relative movement. When the position of the front aperture 10 needs to be adjusted, if the front aperture 10 only needs to move in the Z-axis direction, then only the displacement of the first connecting seat 21 relative to the second connecting seat 22 needs to be adjusted, and the second connecting seat 22 does not need to be adjusted; if the front aperture 10 only needs to move in the Y-axis direction, then only the displacement of the second connecting seat 22 relative to the third connecting seat 23 needs to be adjusted, and the first connecting seat 21 does not need to be adjusted; if the front aperture 10 urgently needs to move in both the Z-axis and Y-axis directions, then the displacements of both the first connecting seat 21 and the second connecting seat 22 can be adjusted.

[0041] When it is necessary to adjust the position of the front aperture 10, the first limiting member 24 and the second limiting member 25 can be released from clamping first, and then the first connecting seat 21 can be driven to slide relative to the second connecting seat 22 along the Z-axis, and / or the second connecting seat 22 can be driven to slide relative to the third connecting seat 23 along the Y-axis until the front aperture 10 is adjusted to the preset position. Then, the relative movement between the first connecting seat 21 and the second connecting seat 22 is restricted by the clamping of the first limiting member 24, and the relative movement between the second connecting seat 22 and the third connecting seat 23 is restricted by the clamping of the second limiting member 25, thereby fixing the position of the front aperture 10. This clamping connection method can reduce the number of times the first limiting member 24 and the second limiting member 25 are connected. The first limiting member 24 can quickly switch between limiting and releasing the limit between the first connecting seat 21 and the second connecting seat 22 through the clamping connection method. The second limiting member 25 can quickly switch between limiting and releasing the limit between the second connecting seat 22 and the third connecting seat 23 through the clamping connection method, thereby improving installation efficiency.

[0042] It should be noted that the first limiting member 24 can limit the first connecting seat 21 and the second connecting seat 22 by clamping, while the second limiting member 25 can limit the second connecting seat 22 and the third connecting seat 23 by other means. Alternatively, the second limiting member 25 can limit the second connecting seat 22 and the third connecting seat 23 by clamping, while the first limiting member 24 can limit the first connecting seat 21 and the second connecting seat 22 by other means. No restrictions are imposed here.

[0043] Please see Figure 3 It is understood that the first connecting seat 21 has a first through hole 211 along the X-axis, the second connecting seat 22 has a second through hole 222 along the X-axis, and the third connecting seat 23 has a third through hole 231 along the X-axis. That is, the axial directions of the first through hole 211, the second through hole 222, and the third through hole 231 are all along the X-axis. The front aperture 10 is at least partially located within the first through hole 211 to further shorten the thickness of the aperture adjustment mechanism in the X-axis direction. At the same time, the first connecting seat 21 also provides circumferential protection for the front aperture 10. The second through hole 222 and the third through hole 231 at least partially overlap in the first direction and both avoid the front aperture 10. In this way, the laser beam can enter the front aperture 10 through the second through hole 222 and the third through hole 231, or the laser beam passing through the front aperture 10 can exit through the second through hole 222 and the third through hole 231.

[0044] Optionally, the cross-sectional dimensions of the first through hole 211 match the cross-sectional dimensions of the outer ring surface of the front aperture 10, so that the front aperture 10 can be interference-fitted with the first connecting seat 21 within the first through hole 211, thereby realizing the installation of the front aperture 10 on the first connecting seat 21. In other embodiments, the front aperture 10 can also be connected to the first connecting seat 21 through other connection structures, which is not limited here.

[0045] Optionally, the second through hole 222 is formed at the bottom of the groove 221, and the cross-sectional dimension in the direction perpendicular to the X-axis is smaller than the dimension of the bottom surface of the groove 221. The first connecting seat 21 has a first front face 2102 and a first back face facing each other in the X-axis direction. The first back face can abut against the bottom surface of the groove 221, and the bottom surface of the groove 221 can limit and guide the first connecting seat 21. In other embodiments, the first back face may not contact the bottom surface of the groove 221, which is not a limitation here.

[0046] Optionally, the depth of the groove 221 is greater than or equal to the thickness of the first connecting seat 21, so that the first connecting seat 21 can be completely accommodated within the groove 221, thereby further reducing the thickness of the adjusting base 20 in the X-axis direction. In other embodiments, the depth of the groove 221 may also be less than the thickness of the first connecting seat 21, which is not limited here.

[0047] There are several ways to slide between the first connecting seat 21 and the second connecting seat 22. Please refer to [link / reference]. Figure 3In one implementation, the slide 221 has two first groove sidewalls 2211 opposite each other in the Z-axis direction and two second groove sidewalls 2212 opposite each other in the Y-axis direction. The two first groove sidewalls 2211 and the two second groove sidewalls 2212 are alternately connected to form a square. The two second groove sidewalls 2212 are parallel, and the distance between the two first groove sidewalls 2211 is greater than the width of the first connecting seat 21 in the Z-axis direction. In this way, the slide 221 provides space for the first connecting seat 21 to move along the Z-axis direction. The first connecting seat 21 has two opposing first side surfaces 2101 in the Y-axis direction. The two first side surfaces 2101 are respectively fitted with a second groove side wall 2212 with clearance. That is, the distance between the two second groove side walls 2212 matches the width of the first connecting seat 21 in the Y-axis direction. In this way, the two second groove side walls 2212 can restrict the movement of the first connecting seat 21 in the Y-axis direction. At the same time, since the two second groove side walls 2212 are parallel, the two first side surfaces 2101 of the first connecting seat 21 can approximately abut against the corresponding second groove side walls 2212 and slide along the Z-axis direction. In this way, the first connecting seat 21 can slide relative to the second connecting seat 22 in the Z-axis direction through the sliding groove 221 without the need for other sliding structures. The structure is simple and easy to assemble.

[0048] In other embodiments, a sliding structure may be provided on the bottom of the groove 221 or on the side wall 2212 of the second groove, and the first connecting seat 21 may be slidably connected to the sliding structure to achieve a sliding connection with the second connecting seat 22. No limitation is made here.

[0049] There are several ways to slide between the second connecting seat 22 and the third connecting seat 23. Please refer to [link / reference]. Figure 3In one implementation, the second connecting seat 22 has a movable part 22a and a connecting part 22b connected together. The movable part 22a is housed within a third through hole 231, and the connecting part 22b is located outside the third through hole 231. The peripheral side surface of the connecting part 22b protrudes from the peripheral side surface of the movable part 22a, meaning that the cross-sectional dimension of the connecting part 22b is larger than that of the movable part 22a. The connecting part 22b has a second front face 2202 and a second back face facing each other in the X-axis direction. The second front face 2202 faces the same direction as the first front face 2102, and the groove opening of the slide groove 221 is located on the second front face 2202. The third connecting seat 23 has a third front face 2302 and a third back face facing each other in the X-axis direction. The third front face 2302 faces the same direction as the second front face 2202, and the third back face is in contact with the peripheral side surface of the connecting part 22b and the peripheral side surface of the movable part 22a. The third through hole 231 has two opposing first hole wall surfaces 2311 in the Y-axis direction and two opposing second hole wall surfaces 2312 in the Z-axis direction. The two first hole wall surfaces 2311 and the two second hole wall surfaces 2312 alternately connect and form a square, and the two second hole wall surfaces 2312 are parallel. The distance between the two first hole wall surfaces 2311 is greater than the width of the second connecting seat 22 in the Y-axis direction. In this way, the third through hole 231 provides space for the second connecting seat 22 to move along the Y-axis direction. The movable part 22a has two opposing movable surfaces in the Z-axis direction. The two movable surfaces are part of the peripheral surface of the movable part 22a. The two movable surfaces 22a1 are respectively clearance-fitted with a second hole wall surface 2312. That is, the distance between the two second hole wall surfaces 2312 matches the width of the movable part 22a in the Z-axis direction. In this way, the two second hole wall surfaces 2312 can restrict the movement of the movable part 22a in the Z-axis direction. At the same time, since the two second hole wall surfaces 2312 are parallel, the two movable surfaces 22a1 can approximately abut against the corresponding second hole wall surfaces 2312 and slide along the Y-axis direction. In this way, the movable part 22a can slide relative to the third connecting seat 23 in the Y-axis direction through the third through hole 231 without the need for other sliding structures. The structure is simple and easy to assemble. The second back side of the connecting part 22b can abut against the third front side 2302 of the third connecting seat 23, so that the third connecting seat 23 can support the second connecting seat 22, thus providing support in the X-axis direction and guidance in the Y-axis direction for the second connecting seat 22.

[0050] In other embodiments, a sliding structure may be provided on the wall of the third through hole 231 or on the third front surface 2302 of the third connecting seat 23, and the second connecting seat 22 may be slidably connected to the sliding structure to achieve a sliding connection with the third connecting seat 23. No limitation is made here.

[0051] There are several ways to set the first limiting member 24 and the second limiting member 25, and the following examples illustrate this.

[0052] Please see Figure 2 and Figure 3 In one embodiment, the first connecting seat 21 has a first hole 212 along the X-axis. The length direction of the first hole 212 is the Z-axis direction, and the width direction is the Y-axis direction. The length of the first hole 212 in the Z-axis direction is greater than the width of the first hole 212 in the Y-axis direction. The first limiting member 24 includes a first rod portion 241 and a first cap portion 242. The first rod portion 241 passes through the first hole 212 and can move along the length direction of the first hole 212, that is, the width of the first rod portion 241 in the Z-axis direction is less than the length of the first hole 212. The first cap portion 242 is connected to the end of the first rod portion 241 away from the second connecting seat 22, so that the first connecting seat 21 is located between the first cap portion 242 and the second connecting seat 22. The first rod portion 241 can be detachably connected to the second connecting seat 22, in which case the first cap portion 242 and the second connecting seat 22 can jointly clamp the first connecting seat 21. Understandably, the orthographic projection of the first cap 242 in the X-axis direction may not overlap with the orthographic projection of the first hole 212 in the X-axis direction at least partially. Thus, when the first rod 241 and the second connecting seat 22 are detachably connected, the first cap 242 can abut against the first front surface 2102 of the first connecting seat 21, thereby achieving the joint clamping of the first connecting seat 21 with the second connecting seat 22.

[0053] Optionally, the first rod portion 241 and the two opposite hole walls of the first hole 212 in the Y-axis direction are clearance-fitted, that is, the width of the first rod portion 241 in the Y-axis direction is equal to or slightly smaller than the width of the first hole 212. In this way, the first rod portion 241 can slide within the first hole 212 along the length direction of the first hole 212. The two hole walls of the first hole 212 in the Y-axis direction play a limiting and guiding role for the first rod portion 241, so as to further improve the sliding stability of the first connecting seat 21 relative to the second connecting seat 22.

[0054] Optionally, the first rod portion 241 is threadedly connected to the bottom wall of the groove 221. Specifically, the bottom wall of the groove 221 is provided with a first threaded hole 224, and the first rod portion 241 is provided with an external thread. The first rod portion 241 can extend into the first threaded hole 224 and engage with the internal thread on the hole wall of the first threaded hole 224 through the external thread, thereby realizing the threaded connection between the first rod portion 241 and the second connecting seat 22.

[0055] Optionally, the first limiting member 24 is a screw, and the cross-section of the first cap 242 is circular, with a diameter greater than the diameter of the first rod 241 and the width of the first hole 212. In this way, the first cap 242 can abut against the first front surface 2102 of the first connecting seat 21 on both sides of the first hole 212 in the Y-axis direction, thereby improving the clamping stability of the first limiting member 24.

[0056] Optionally, two first limiting members 24 are provided, and correspondingly, two first holes 212 are also provided. The two first holes 212 can be located on both sides radially of the first through hole 211. The first rod portion 241 of each first limiting member 24 can pass through one of the first holes 212 to detachably connect with the second connecting seat 22. In this way, after the position of the first connecting seat 21 is adjusted, the provision of two first limiting members 24 can improve the stability of the current position of the first connecting seat 21 and prevent the first connecting seat 21 from shaking or twisting. In other embodiments, the number of first limiting members 24 can also be one or more. The number of first holes 212 can be the same as the number of first limiting members 24, with one first hole 212 corresponding to one first limiting member 24, or it can be less than the number of first limiting members 24. The first rod portion 241 of multiple first limiting members 24 can pass through the same first hole 212, which is not limited here.

[0057] It should be noted that in other embodiments, the first hole 212 may not be provided, and the first limiting member 24 may be clamped in the edge region of the first connecting seat 21. Alternatively, the first hole 212 may be provided on the second connecting seat 22, such as being formed on the peripheral side of the second connecting seat 22 and extending to the groove sidewall of the slide groove 221, and the first rod portion 241 may pass through the first hole 212 and be detachably connected to the first connecting seat 21. There are no restrictions on this.

[0058] The second limiting member 25 is configured similarly to the first limiting member 24. Please refer to [link / reference]. Figure 2 and Figure 3In one implementation, the second connecting seat 22 has a second hole 223 along the X-axis. Specifically, the second hole 223 penetrates the second front side 2202 and the second back side of the connecting portion 22b. The length direction of the second hole 223 is the Y-axis direction, and the width direction of the second hole 223 is the Z-axis direction. The length of the second hole 223 in the Y-axis direction is greater than the width of the second hole 223 in the Z-axis direction. The second limiting member 25 includes a second rod portion 251 and a second cap portion 252. The second rod portion 251 passes through the second hole 223 and can move along the length direction of the second hole 223, that is, the width of the second rod portion 251 in the Y-axis direction is less than the length of the second hole 223. The second cap portion 252 is connected to the end of the second rod portion 251 away from the third connecting seat 23. Thus, the connecting portion 22b of the second connecting seat 22 is located between the second cap portion 252 and the third connecting seat 23. The second rod portion 251 is detachably connected to the third connecting seat 23. At this time, the second cap portion 252 and the third connecting seat 23 jointly clamp the connecting portion 22b, thereby clamping the second connecting seat 22. It can be understood that the orthographic projection of the second cap portion 252 in the X-axis direction may not overlap with the orthographic projection of the second hole 223 in the X-axis direction at least partially. Thus, when the second rod portion 251 and the third connecting seat 23 are detachably connected, the second cap portion 252 can abut against the second front surface 2202 of the connecting seat, thereby clamping the first connecting seat 21 together with the second connecting seat 22.

[0059] Optionally, the second rod portion 251 and the two opposing hole walls of the second hole 223 in the Z-axis direction are clearance-fitted, that is, the width of the second rod portion 251 in the Z-axis direction is equal to or slightly less than the width of the second hole 223. In this way, the second rod portion 251 can slide within the second hole 223 along the length direction of the second hole 223. The two hole walls of the second hole 223 in the Y-axis direction play a limiting and guiding role for the second rod portion 251, so as to further improve the sliding stability of the second connecting seat 22 relative to the third connecting seat 23.

[0060] Optionally, the second rod portion 251 is threadedly connected to the third connecting seat 23. Specifically, the third front surface 2302 of the third connecting seat 23 is provided with a second threaded hole 232, and the second rod portion 251 is provided with an external thread. The second rod portion 251 can extend into the second threaded hole 232 and engage with the internal thread on the hole wall of the second threaded hole 232 through the external thread, thereby realizing the threaded connection between the second rod portion 251 and the third connecting seat 23.

[0061] Optionally, the second limiting member 25 is a screw, and the cross-section of the second cap 252 is circular, with a diameter greater than the diameter of the second rod 251 and the width of the first hole 212. In this way, the second cap 252 can abut against the second front surface 2202 of the connecting portion 22b on both sides of the second hole 223 in the Z-axis direction, thereby improving the clamping stability of the second limiting member 25. In other embodiments, the second limiting member 25 may also be L-shaped, and the cross-section of the second cap 252 may be polygonal, elliptical, or irregular; no limitation is made here.

[0062] Optionally, two second limiting members 25 are provided, and correspondingly, two second holes 223 are also provided. The two second holes 223 can be located on both sides of the slide groove 221 in the Y-axis direction. The second rod portion 251 of each second limiting member 25 can pass through one second hole 223 to detachably connect with the third connecting seat 23. In this way, after the position of the second connecting seat 22 is adjusted, the provision of two second limiting members 25 can improve the stability of the current position of the second connecting seat 22 and prevent the second connecting seat 22 from shaking or twisting. In other embodiments, the number of second limiting members 25 can also be one or more. The number of second holes 223 can be the same as the number of second limiting members 25, with each second hole 223 corresponding to a second limiting member 25, or it can be less than the number of second limiting members 25. The second rod portions 251 of multiple second limiting members 25 can pass through the same second hole 223, which is not limited here.

[0063] It should be noted that in other embodiments, the second hole 223 may not be provided, and the second limiting member 25 may be clamped in the edge region of the second connecting seat 22. Alternatively, the second hole 223 may be provided on the third connecting seat 23, such as being opened on the peripheral side of the third connecting seat 23 and extending through the wall of the third through hole 231, and the second rod portion 251 may pass through the second hole 223 and be detachably connected to the second connecting seat 22. No limitation is imposed here.

[0064] The sliding of the first connecting seat 21 relative to the second connecting seat 22, and the sliding of the second connecting seat 22 relative to the third connecting seat 23, can be achieved by a mechanical structure, an electronically controlled structure, or manually; no limitation is made here. The following description illustrates implementations using a mechanical structure.

[0065] Please see Figure 2 and Figure 3In one embodiment, the aperture adjustment mechanism further includes a first adjusting member 26, which is rotatably connected to a second connecting seat 22 and threadedly connected to a first connecting seat 21. The rotation axis of the first adjusting member 26 extends along the Z-axis direction. The first adjusting member 26 is restricted in the Z-axis direction by the second connecting seat 22, meaning it cannot move along the Z-axis. When the first adjusting member 26 rotates relative to the second connecting seat 22, the first connecting seat 21 can move relative to the second connecting seat 22 in the Z-axis direction because its rotational freedom is restricted. Thus, the operator can adjust the position of the first connecting seat 21 in the Z-axis direction by turning the first adjusting member 26. The structure is simple, and the operation is quick and easy.

[0066] Optionally, the connecting part 22b has two opposite second side surfaces 2201 in the Z-axis direction. The connecting part 22b has a first limiting groove 225 and a first rotating groove 226 on the second front surface 2202. The opening of the first limiting groove 225 and the opening of the first rotating groove 226 are both located on the second front surface 2202 and between the sliding groove 221 and the same second side surface 2201. The first limiting groove 225 is located between the second side surface 2201 and the sliding groove 221. The first rotating groove 226 is located between the first limiting groove 225 and the sliding groove 221, and communicates with the first limiting groove 225 and the sliding groove 221 along the Z-axis. The groove side wall of the first limiting groove 225 away from the first rotating groove 226 is also provided with a first through hole 227 that extends to the second side surface 2201. That is, the first through hole 227 is located between the first limiting groove 225 and the second side surface 2201, and extends to the groove side wall of the first limiting groove 225 and the second side surface 2201 along the Z-axis. In other words, the first rotating groove 226, the first limiting groove 225, and the first through hole 227 are arranged sequentially from the sliding groove 221 to one of the second side surfaces 2201. The second through hole 235 can be used to allow an external tool to be inserted into the first limiting groove 225 and to circumferentially limit the external tool, reducing or preventing the external tool from shaking. The first perforation 227 can be circumferentially closed, or it can be formed into a notch on the second front side 2202 or the second back side to make it more convenient to not be restricted here.

[0067] Correspondingly, the first adjusting member 26 includes a first limiting part 261 and a first screw part 262 connected to the first limiting part 261. The first limiting part 261 is at least partially housed within the first limiting groove 225. The first screw part 262 is rotatably disposed in the first rotating groove 226 and threadedly connected to the first connecting seat 21. The two groove sidewalls of the first limiting groove 225 in the Z-axis direction limit the movement range of the first limiting part 261 in the Z-axis direction. That is, the orthographic projection of the first limiting part 261 in the Z-axis direction does not at least partially overlap with the orthographic projection of the first rotating groove 226 in the Z-axis direction, nor does it at least partially overlap with the orthographic projection of the first through hole 227 in the Z-axis direction. The groove sidewall of the first limiting groove 225 that communicates with the first rotating groove 226 restricts the first limiting part 261 from disengaging from the first rotating groove 226 or the first through hole 227 from the first limiting groove 225.

[0068] During installation, the first adjusting member 26 is first threadedly connected to the first connecting seat 21. Then, the first limiting part 261 is inserted into the first limiting groove 225 through the opening of the first limiting groove 225, and the first screw part 262 passes through the first rotating groove 226 accordingly. At this time, an external tool can be inserted into the first limiting groove 225 through the first through hole 227 and cooperate with the first limiting part 261. The operator or electrical control equipment can rotate the first limiting part 261 to move the first connecting seat 21 along the Z-axis. In this way, the second connecting seat 22 can limit the movement range of the first adjusting member 26 in the Z-axis direction. At the same time, the rotation of the first adjusting member 26 can be achieved by an external tool inserted through the first through hole 227. This arrangement can avoid the first adjusting member 26 occupying space in the Z-axis direction, and the second connecting seat 22 can protect the first adjusting member 26. The first limiting groove 225 and the first rotating groove 226 facilitate the placement of the first adjusting member 26 on the second connecting seat 22 and its rotating connection with the second connecting seat 22.

[0069] Optionally, the first limiting part 261 and the two groove sidewalls of the first limiting groove 225 are clearance-fitted in the Z-axis direction. In this way, the movement of the first limiting part 261 in the Z-axis direction within the first limiting groove 225 can be reduced to a small range, or even the first limiting part 261 can move almost no distance in the Z-axis direction, thereby improving the stability of the first adjusting member 26 in the process of adjusting the position of the first connecting seat 21.

[0070] Optionally, the first adjusting member 26 is a screw, and the first limiting part 261 is a nut of the screw. This configuration is inexpensive, easy to operate, and external tools can be used to engage with the groove on the nut.

[0071] In other embodiments, the openings of the first limiting groove 225 and the first rotating groove 226 may also be located on the second back side of the connecting part 22b, which is not limited here. The first rotating groove 226, the first limiting groove 225 and the first through hole 227 connected in series form a group of first groove structures. One or more of these first groove structures can be provided on both sides of the first connecting seat 21 in the Z-axis direction, so as to improve the selectivity of the position where the first adjusting member 26 can be set, thereby allowing the position where the first adjusting member 26 can be installed to be selected according to the internal space layout of the laser equipment, increasing the applicable scenarios of the adjusting base 20 and improving the applicability of the adjusting base 20.

[0072] Please see Figure 2 and Figure 3 In one embodiment, the aperture adjustment mechanism further includes a second adjusting member 27, which is rotatably connected to a third connecting seat 23 and threadedly connected to a second connecting seat 22. The rotation axis of the second adjusting member 27 extends along the Y-axis. The second adjusting member 27 is restricted in the Y-axis direction by the third connecting seat 23, meaning it cannot move along the Y-axis. When the second adjusting member 27 rotates relative to the third connecting seat 23, the second connecting seat 22 can move relative to the third connecting seat 23 in the Y-axis direction because its rotational freedom is restricted. Thus, the operator can adjust the position of the second connecting seat 22 in the Y-axis direction by turning the second adjusting member 27. The structure is simple, and the operation is quick and easy.

[0073] Optionally, the third connecting seat 23 has two opposite third side surfaces 2301. The third connecting seat 23 has a second limiting groove 233 and a second rotating groove 234 on the third front surface 2302. The opening of the second limiting groove 233 and the opening of the second rotating groove 234 are both located on the third front surface 2302 and between the third through hole 231 and the same third side surface 2301. The second limiting groove 233 is located between the third side surface 2301 and the third through hole 231. The second rotating groove 234 is located between the second limiting groove 233 and the third through hole 231, and communicates with the second limiting groove 233 and the third through hole 231 along the Y-axis. The groove side wall of the second limiting groove 233 away from the second rotating groove 234 is also provided with a second through hole 235 that extends to the third side surface 2301. That is, the second through hole 235 is located between the second limiting groove 233 and the third side surface 2301, and extends to the groove side wall of the second limiting groove 233 and the third side surface 2301 along the Y-axis. In other words, the second rotating groove 234, the second limiting groove 233, and the second through hole 235 are arranged sequentially from the third through hole 231 to one of the third side surfaces 2301. The third through hole can be used to allow external tools to be inserted into the second limiting groove 233 and to circumferentially limit the external tools, reducing or preventing the external tools from shaking. The second perforation 235 can be circumferentially closed, or a notch can be formed on the third front side 2302 or the third back side to make it easier to not restrict this area.

[0074] Correspondingly, the second adjusting member 27 includes a second limiting part 271 and a second screw part 272 connected to the second limiting part 271. The second limiting part 271 is at least partially housed within the second limiting groove 233. The second screw part 272 is rotatably disposed in the second rotating groove 234 and threadedly connected to the second connecting seat 22, specifically to the moving part 22a. The two groove sidewalls of the second limiting groove 233 in the Y-axis direction limit the movement range of the second limiting part 271 in the Y-axis direction. That is, the orthographic projection of the second limiting part 271 in the Y-axis direction does not at least partially overlap with the orthographic projection of the second rotating groove 234 in the Y-axis direction, nor does it at least partially overlap with the orthographic projection of the second through hole 235 in the Y-axis direction. The groove sidewall of the second limiting groove 233 that communicates with the second rotating groove 234 restricts the second limiting part 271 from disengaging from the second rotating groove 234 or the second through hole 235 from the second limiting groove 233.

[0075] During installation, the second adjusting member 27 can be threadedly connected to the second connecting seat 22 first. Then, the second limiting part 271 is inserted into the second limiting groove 233 through the opening of the second limiting groove 233, and the second screw part 272 passes through the second rotating groove 234 accordingly. At this time, an external tool can be inserted into the second limiting groove 233 from the outside through the second through hole 235 and cooperate with the second limiting part 271. The operator or electrical control equipment can rotate the second limiting part 271 to move the second connecting seat 22 along the Y-axis. In this way, the third connecting seat 23 can limit the movement range of the second adjusting member 27 in the Y-axis direction. At the same time, the rotation of the second adjusting member 27 can be achieved by an external tool inserted through the second through hole 235. This arrangement can avoid the second adjusting member 27 occupying space in the Y-axis direction, and the third connecting seat 23 can protect the second adjusting member 27. The second limiting groove 233 and the second rotating groove 234 facilitate the placement of the second adjusting member 27 on the third connecting seat 23 and its rotating connection with the third connecting seat 23.

[0076] Optionally, the second limiting part 271 and the two groove sidewalls of the second limiting groove 233 are clearance-fitted in the Y-axis direction. In this way, the movement of the second limiting part 271 in the Y-axis direction within the second limiting groove 233 can be reduced to a small range, or even made to be almost non-moving in the Y-axis direction, thereby improving the stability of the second adjusting member 27 in the process of adjusting the position of the second connecting seat 22.

[0077] Optionally, the second adjusting member 27 is a screw, and the second limiting part 271 is a screw nut. This configuration is inexpensive, easy to operate, and external tools can be used to engage with the groove on the nut.

[0078] In other embodiments, the openings of the second limiting groove 233 and the second rotating groove 234 may also be located on the third back side of the third connecting seat 23, which is not limited here. The second rotating groove 234, the second limiting groove 233 and the second through hole 235 connected in series form a group of second groove structures. One or more of these second groove structures can be provided on both sides of the second connecting seat 22 in the Y-axis direction to improve the selectivity of the position where the second adjusting member 27 can be set. This allows the position where the second adjusting member 27 can be installed to be selected according to the internal space layout of the laser equipment, increasing the applicable scenarios of the adjusting base 20 and improving the applicability of the adjusting base 20.

[0079] In other embodiments, the first adjusting member 26 may also be threadedly connected to the second connecting seat 22 and rotatably connected to the first connecting seat 21. Similarly, the second adjusting member 27 may also be threadedly connected to the third connecting seat 23 and rotatably connected to the second connecting seat 22. There are no restrictions here, as long as the first adjusting member 26 can realize the movement of the first connecting seat 21 along the Z-axis direction through the transmission connection with the first connecting seat 21 and the second connecting seat 22, and the second adjusting member 27 can realize the movement of the second connecting seat 22 along the Y-axis direction through the transmission connection with the second connecting seat 22 and the third connecting seat 23.

[0080] The above are merely preferred embodiments of this application, and only specifically describe the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. An aperture adjustment mechanism, characterized by, The device includes a front aperture and an adjustment base. The adjustment base includes a first connecting seat, a second connecting seat, and a third connecting seat. The first connecting seat is connected to the front aperture, and the central axis of the front aperture extends along a first direction. The second connecting seat has a sliding groove along the first direction, and the first connecting seat is at least partially housed in the sliding groove and slidably connected to the second connecting seat along a second direction, which is perpendicular to the first direction. The second connecting seat is slidably connected to the third connecting seat along a third direction, which is perpendicular to both the first and second directions. Both the second connecting seat and the third connecting seat avoid the front aperture in the first direction.

2. The iris adjustment mechanism of claim 1, wherein The first connector has a first through hole along the first direction, the second connector has a second through hole along the first direction, and the third connector has a third through hole along the third direction. The front aperture is at least partially located in the first through hole, and the second through hole and the third through hole are at least partially overlapped in the first direction and both avoid the front aperture.

3. The iris adjustment mechanism of claim 1, wherein The adjusting base further includes a first limiting member and a second limiting member. One of the first connecting seat and the second connecting seat is detachably connected to the first limiting member and can clamp the other of the first connecting seat and the second connecting seat together with the first limiting member. One of the second connecting seat and the third connecting seat is detachably connected to the second limiting member and can clamp the other of the second connecting seat and the third connecting seat together with the second limiting member.

4. The iris adjustment mechanism of claim 3, wherein, The first connecting seat has a first hole along the first direction, and the length direction of the first hole is the second direction. The first limiting member includes a first rod and a first cap. The first rod passes through the first hole and is detachably connected to the second connecting seat. The first cap is connected to the end of the first rod away from the second connecting seat and together with the second connecting seat, clamps the first connecting seat. And / or, the second connecting seat has a second hole along the first direction, the length direction of the second hole is the third direction, the second limiting member includes a second rod and a second cap, the second rod passes through the second hole and is detachably connected to the third connecting seat, the second cap is connected to the end of the second rod away from the third connecting seat, and together with the third connecting seat, clamps the second connecting seat.

5. The iris adjustment mechanism of claim 1, wherein, The slide has two first groove sidewalls opposite each other in a second direction and two second groove sidewalls opposite each other in a third direction. The two second groove sidewalls are parallel, and the distance between the two first groove sidewalls is greater than the width of the first connecting seat in the second direction. The first connecting seat has two back-to-back first sides in the third direction, and the two first sides are respectively clearance-fitted with one of the second groove sidewalls.

6. The aperture adjustment mechanism as described in claim 1, characterized in that, The aperture adjustment mechanism further includes a first adjustment member, which is rotatably connected to a second connecting seat and threadedly connected to the first connecting seat. The rotation axis of the first adjustment member extends along the second direction.

7. The iris adjustment mechanism of claim 6, wherein, The second connecting seat has two opposing second side surfaces in the second direction. A first limiting groove and a first rotating groove are formed on the surface of the second connecting seat facing away from the third connecting seat. The first limiting groove is located between the second side surface and the sliding groove. The first rotating groove is located between the first limiting groove and the sliding groove and communicates with the first limiting groove and the sliding groove in the second direction. A first through hole is formed on the groove side wall of the first limiting groove away from the first rotating groove, which extends to the second side surface. The first adjusting member includes a first limiting part and a first screw part connected to the first limiting part. The first limiting part is at least partially received in the first limiting groove. The first limiting part and the two groove side walls of the first limiting groove in the second direction are clearance-fitted. The first screw part is rotatably passed through the first rotating groove and is threadedly connected to the first connecting seat.

8. The iris adjustment mechanism of claim 1, wherein, The aperture adjustment mechanism further includes a second adjustment component, which is rotatably connected to a third connecting seat and threadedly connected to the second connecting seat. The rotation axis of the second adjustment component extends along the third third direction.

9. The iris adjustment mechanism of claim 8, wherein, The third connecting seat has two opposing third side surfaces in the third direction. A second limiting groove and a second rotating groove are formed on the surface of the third connecting seat in the first direction. The third connecting seat has a third through hole. The second connecting seat has a movable part received within the third through hole, which can move within the third through hole in the third direction. The second limiting groove is located between the third side surface and the third through hole. The second rotating groove is located between the second limiting groove and the third through hole, and communicates with both the second limiting groove and the third through hole in the third direction. A third through hole is formed on the groove sidewall of the second limiting groove away from the second rotating groove, extending to the third side surface. The second adjusting member includes a second limiting part and a second screw part connected to the second limiting part. The second limiting part is at least partially received within the second limiting groove. The second limiting part and the second limiting groove are clearance-fitted on both groove sidewalls in the third direction. The second screw part is rotatably inserted through the second rotating groove and threadedly connected to the movable part.

10. A laser device, characterized in that, The device includes a laser generating mechanism and an aperture adjustment mechanism as described in any one of claims 1 to 9, wherein the laser generating mechanism is capable of generating a laser beam, the aperture adjustment mechanism is disposed in the emission direction of the laser beam, and the central axis of the front aperture is parallel to or coincides with the central axis of the laser beam.

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