Laser alignment module capable of expanding beams by multiple times

Abstract

The utility model discloses a laser collimation module capable of expanding beams for multiple times. The laser collimation module comprises a laser collimation module body arranged on one side of a galvanometer adapter plate, a beam expanding structure arranged at one end of the laser collimation module body and a heat sink structure arranged outside the laser collimation module body. The horizontal projection cylinder is arranged between the fixed seat and the galvanometer adapter plate, the laser collimation cylinder is arranged on one side of the fixed seat, the fixed plate is arranged in the fixed seat, and the reflector is arranged in the fixed plate; the first lens barrel is arranged outside the laser collimation barrel, the second lens barrel is connected with the first lens barrel, and the third lens barrel is connected with the second lens barrel; a first glass lens is arranged in the first lens cone, a second glass lens is arranged in the second lens cone, and a third quartz lens is arranged in the third lens cone; the plurality of integrated assemblies are arranged outside the laser alignment module, and the plurality of heat sink assemblies are arranged inside the integrated assemblies. According to the utility model, the laser beam can be effectively expanded by multiple times, and the requirements of different application scenes on the size of the laser beam can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of laser application, in particular to a laser collimation module capable of multiple beam expansion. Background Art

[0002] The laser collimation module is a key component in the laser welding head or laser equipment. Its main function is to gradually shape and collimate the input laser beam through a series of optical elements to obtain a parallel beam that meets the requirements.

[0003] Specifically, the working principle of the laser collimation module involves the cooperation of the laser emission source, collimator, focusing lens and other optical systems. The laser emission source generates a beam of laser, and then the laser beam is adjusted by the collimator to make it propagate in a straight line and reduce its diameter. The focusing lens is used to adjust the focal length and focusing effect of the laser beam to ensure that the laser beam maintains a certain diameter and focal position during propagation.

[0004] Laser alignment modules have many important application features, such as high-precision position control, high-stability motion control, high-efficiency motion control, and the ability to integrate and interact with other components. This makes it play a key role in laser cutting, laser welding and other high-power applications, especially in situations where high precision and high-quality beams are required.

[0005] In the prior art, the patent with announcement number CN217112843U discloses a collimation adjustment device for a beam expander and laser processing equipment. By horizontally moving an observation plate and adjusting the divergence angle of the beam expander, the sizes of the light spots projected to different positions are made equal, thereby accurately judging the collimation effect of the light beam after expansion by the beam expander. The structure is relatively simple, so the cost is relatively low, and the operation difficulty is relatively low, the use is more flexible, and the debugging efficiency is relatively high.

[0006] However, there are the following problems in the above prior art:

[0007] (1) When the prior art is used, the beam expander and other optical components may undergo thermal expansion due to temperature changes, and different parts of the beam expander may generate temperature gradients due to uneven heat dissipation, which may cause optical alignment deviation and affect the quality of the beam;

[0008] (2) The prior art cannot accurately adjust the collimation when adjusting the beam expander, resulting in low adjustment accuracy.

[0009] Therefore, there is an urgent need to improve the prior art to solve the above problems. Summary of the invention

[0010] The utility model overcomes the shortcomings of the prior art and provides a laser alignment module capable of multiple beam expansion.

[0011] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a laser alignment module capable of multiple beam expansion, comprising: a galvanometer adapter plate, a laser alignment module arranged on one side of the galvanometer adapter plate, a beam expansion structure arranged at one end of the laser alignment module, and a heat sink structure arranged outside the laser alignment module;

[0012] The laser alignment module comprises: a fixing seat, a horizontal projection tube arranged between the fixing seat and the galvanometer adapter plate, a laser alignment tube arranged on one side of the fixing seat, a fixing plate arranged inside the fixing seat, and a reflector arranged inside the fixing plate; a reflective through hole for placing the reflector is opened on the fixing plate;

[0013] The beam expansion structure comprises: a first lens barrel arranged outside the laser collimation barrel, a second lens barrel connected to the first lens barrel, and a third lens barrel connected to the second lens barrel; a first glass lens is arranged in the first lens barrel, a second glass lens is arranged in the second lens barrel, and a third quartz lens is arranged in the third lens barrel;

[0014] The heat sink structure includes: a plurality of integrated components arranged outside the laser alignment module, and a plurality of heat sink components arranged inside the integrated components.

[0015] In a preferred embodiment of the utility model, a horizontal through hole matching with the horizontal projection tube is provided at the connection between the galvanometer adapter plate and the fixing seat and the horizontal projection tube, and a collimation through hole matching with the laser collimation tube is provided at the connection between the fixing seat and the laser collimation tube; the aperture of the horizontal through hole is larger than the aperture of the collimation through hole.

[0016] In a preferred embodiment of the present invention, the fixing plate is arranged at an angle, and the angle between the fixing plate and the horizontal plane is 45 degrees.

[0017] In a preferred embodiment of the present invention, the first glass lens is a plano-convex structure with negative optical power; the second glass lens is a meniscus structure with positive optical power; and the third quartz lens is a meniscus structure with positive optical power.

[0018] In a preferred embodiment of the present invention, the center points of the first glass lens, the second glass lens and the third quartz lens are all on the same horizontal line.

[0019] In a preferred embodiment of the present invention, the curvature radius R1 of one side of the first glass lens is -5.7 mm, the curvature radius R2 of the other side of the third quartz lens is 2.973 mm; and the thickness D1 of the third quartz lens is 3.5 mm.

[0020] In a preferred embodiment of the present invention, the curvature radius R3 of one side of the second glass lens is 87.35 mm, the curvature radius R4 of the other side of the second glass lens is 82.07 mm; and the thickness D2 of the second glass lens is 6.8 mm.

[0021] In a preferred embodiment of the present invention, the curvature radius R5 of one side of the third quartz lens is -280 mm, the curvature radius R6 of the other side of the first glass lens is -260 mm; and the thickness D3 of the first glass lens is 14.3 mm.

[0022] In a preferred embodiment of the utility model, the integrated assembly includes: an integrated ring plate, a cooling channel provided in the integrated ring plate, a plurality of cooling grooves provided inside the cooling channel, and a medium inlet and a medium outlet provided outside the integrated ring plate;

[0023] In a preferred embodiment of the utility model, the heat sink assembly includes: a plurality of fixing rods fixedly arranged inside the cooling groove, a heat sink pile array arranged on one side of the fixing rods, and a heat sink guide plate arranged between the plurality of heat sink pile arrays; the heat sink assembly is arranged inside the cooling groove.

[0024] The utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0025] (1) The utility model provides a laser collimation module that can expand the beam multiple times. Through the design of a fixed seat, a horizontal projection tube and a laser collimation tube, the laser can be efficiently transmitted inside the module and collimated by the collimation tube to ensure the quality and stability of the laser beam; the beam expansion structure is composed of three lenses of different materials and shapes. The specific design and arrangement sequence of these lenses can effectively expand the laser beam multiple times to meet the requirements of different application scenarios for the laser beam size; the structure of the three lenses is combined with their optical focal length settings, so that the laser beam can be accurately controlled and adjusted.

[0026] (2) The utility model integrates the design of cooling channels and cooling grooves in the ring plate and the reasonable layout of the heat sink assembly. The structure can effectively absorb and conduct the heat generated by the laser collimation module during operation, maintain the temperature of the module stable, and thus improve the performance and life of the laser.

[0027] (3) In the present invention, the integrated components are arranged in a linear array along the extension direction of the laser alignment module, so that the entire heat sink structure is compact, space-saving, and easy to integrate into various equipment. It is also easy to maintain and upgrade. The C-shaped structural design of the cooling channel and the reasonable layout of the medium inlet and outlet enable the cooling medium to flow through the cooling channel efficiently, take away heat, and improve the cooling efficiency.

[0028] (4) In the present invention, the design of the fixed rods and the heat sink pile array in the cooling trough ensures that the heat can be evenly distributed in the heat sink assembly, avoids the problem of local overheating, and improves the thermal stability of the entire system; the circular array arrangement of the heat sink pile array and the heat sink guide plate, as well as the V-shaped or Y-shaped structure of the heat sink guide plate, provide flexible heat sink design options, and the shape and layout of the heat sink assembly can be adjusted according to actual needs to achieve the best thermal management effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0030] Figure 1 It is an overall three-dimensional structural diagram of a preferred embodiment of the utility model;

[0031] Figure 2 It is a schematic cross-sectional structure diagram of a laser alignment module of a preferred embodiment of the utility model;

[0032] Figure 3 It is a schematic cross-sectional structure diagram of a beam expansion structure of a preferred embodiment of the utility model;

[0033] Figure 4 It is a structural schematic diagram of an integrated component of a preferred embodiment of the utility model;

[0034] Figure 5 It is an overall three-dimensional structural diagram of a heat sink assembly including a V-shaped structure according to a preferred embodiment of the utility model;

[0035] Figure 6 It is a structural schematic diagram of a heat sink assembly including a V-shaped structure according to a preferred embodiment of the utility model;

[0036] Figure 7 It is an overall three-dimensional structural diagram of a heat sink assembly including a Y-shaped structure according to a preferred embodiment of the utility model;

[0037] Figure 8 It is a structural schematic diagram of a heat sink assembly including a Y-shaped structure according to a preferred embodiment of the utility model;

[0038] In the figure: 1. galvanometer adapter plate; 2. laser alignment module; 21. fixing seat; 22. horizontal projection tube; 221. horizontal through hole; 23. laser collimation tube; 231. collimation through hole; 24. fixing plate; 25. reflector; 3. beam expansion structure; 31. first lens barrel; 311. first glass lens; 32. second lens barrel; 321. second glass lens; 33. third lens barrel; 331. third quartz lens; 4. heat sink structure; 41. integrated component; 411. integrated ring plate; 412. cooling channel; 413. cooling groove; 414. medium inlet; 415. medium outlet; 42. heat sink component; 421. fixing rod; 422. heat sink pile array; 423. heat sink guide plate. DETAILED DESCRIPTION

[0039] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0040] like Figure 1 As shown, the present invention provides a laser alignment module 2 capable of multiple beam expansion, comprising: a galvanometer adapter plate 1, a laser alignment module 2 arranged on one side of the galvanometer adapter plate 1, a beam expansion structure 3 arranged at one end of the laser alignment module 2, and a heat sink structure 4 arranged outside the laser alignment module 2.

[0041] The utility model uses the design of the fixing seat 21, the horizontal projection tube 22 and the laser collimation tube 23 to enable the laser to be efficiently transmitted inside the module and collimated by the collimation tube to ensure the quality and stability of the laser beam. This design helps to reduce the loss and divergence of the laser during transmission and improve the efficiency of laser use.

[0042] like Figure 2 As shown, the laser alignment module 2 includes: a fixing seat 21, a horizontal projection tube 22 arranged between the fixing seat 21 and the galvanometer adapter plate 1, a laser alignment tube 23 arranged on one side of the fixing seat 21, a fixing plate 24 arranged inside the fixing seat 21, and a reflector 25 arranged inside the fixing plate 24; a reflective through hole for placing the reflector 25 is opened on the fixing plate 24.

[0043] A horizontal through hole 221 matching with the horizontal projection tube 22 is provided at the connection between the galvanometer adapter plate 1 and the fixing seat 21 and the horizontal projection tube 22, and a collimation through hole 231 matching with the laser collimation tube 23 is provided at the connection between the fixing seat 21 and the laser collimation tube 23; the aperture of the horizontal through hole 221 is larger than the aperture of the collimation through hole 231.

[0044] The fixing plate 24 is arranged to be inclined, and the angle between the fixing plate 24 and the horizontal plane is 45 degrees.

[0045] like Figure 3 As shown, the beam expansion structure 3 includes: a first lens barrel 31 disposed outside the laser collimating barrel 23, a second lens barrel 32 connected to the first lens barrel 31, and a third lens barrel 33 connected to the second lens barrel 32; a first glass lens 311 is disposed in the first lens barrel 31, a second glass lens 321 is disposed in the second lens barrel 32, and a third quartz lens 331 is disposed in the third lens barrel 33. The beam expansion structure 3 is 1.5-2X adjustable.

[0046] The first glass lens 311 is a plano-convex structure with negative focal length; the second glass lens 321 is a meniscus structure with positive focal length; the third quartz lens 331 is a meniscus structure with positive focal length; the center points of the first glass lens 311, the second glass lens 321 and the third quartz lens 331 are all on the same horizontal line.

[0047] The specific design and arrangement order of these lenses can effectively expand the laser beam by multiple times, meeting the requirements of laser beam size for different application scenarios.

[0048] The curvature radius R1 of one side of the first glass lens 311 is -5.7 mm, and the curvature radius R2 of the other side of the third quartz lens 331 is 2.973 mm; the thickness D1 of the third quartz lens 331 is 3.5 mm.

[0049] The curvature radius R3 of one side of the second glass lens 321 is 87.35 mm, and the curvature radius R4 of the other side of the second glass lens 321 is 82.07 mm; the thickness D2 of the second glass lens 321 is 6.8 mm.

[0050] The curvature radius R5 of one side of the third quartz lens 331 is -280 mm, and the curvature radius R6 of the other side of the first glass lens 311 is -260 mm; the thickness D3 of the first glass lens 311 is 14.3 mm.

[0051] The plano-convex structure of the first glass lens 311 and the meniscus structures of the second and third lenses, as well as their focal power settings, enable the laser beam to be precisely controlled and adjusted. This precise beam control is particularly important for applications that require high-precision processing or measurement.

[0052] The heat sink structure 4 includes: a plurality of integrated components 41 arranged outside the laser alignment module 2 , and a plurality of heat sink components 42 arranged inside the integrated components 41 .

[0053] The heat sink structure 4 integrates the design of the cooling channel 412 and the cooling groove 413 in the ring plate 411, and the reasonable layout of the heat sink component 42. The structure can effectively absorb and conduct the heat generated by the laser collimation module 2 during operation, maintain the temperature of the module stable, and thus improve the performance and life of the laser.

[0054] like Figure 4 As shown, the integrated component 41 includes: an integrated ring plate 411 , a cooling channel 412 opened in the integrated ring plate 411 , a plurality of cooling grooves 413 arranged inside the cooling channel 412 , and a medium inlet 414 and a medium outlet 415 opened outside the integrated ring plate 411 .

[0055] The integrated components 41 are sleeved outside the laser alignment module 2 , and the integrated components 41 are arranged in a linear array along the extension direction of the laser alignment module 2 .

[0056] The integrated components 41 are arranged in a linear array along the extension direction of the laser alignment module 2, so that the entire heat sink structure 4 is compact, space-saving, and easy to integrate into various equipment, and is also easy to maintain and upgrade; the C-shaped structural design of the cooling channel 412 and the reasonable layout of the medium inlet 414 and outlet enable the cooling medium to flow through the cooling channel 412 efficiently, take away heat, and improve cooling efficiency.

[0057] The cooling channel 412 is a C-shaped structure. The medium inlet and the medium outlet 415 are opened on the same side of the integrated ring plate 411 . The medium inlet 414 is connected to one end of the cooling channel 412 , and the medium outlet 415 is connected to the other end of the cooling channel 412 .

[0058] A plurality of cooling grooves 413 are circumferentially arranged inside the cooling channel 412 , and the cooling grooves 413 are cylindrical grooves; the fixing rods 421 are circumferentially arranged inside the cooling grooves 413 , and heat conduction channels are arranged between the plurality of fixing rods 421 .

[0059] The design of the fixed rod 421 and the heat sink pile array 422 in the cooling groove 413 ensures that the heat can be evenly distributed in the heat sink assembly 42, avoids the problem of local overheating, and improves the thermal stability of the entire system; the circular array layout of the heat sink pile array 422 and the heat sink guide plate 423, as well as the V-shaped or Y-shaped structure of the heat sink guide plate 423, provide flexible heat sink design options, and the shape and layout of the heat sink assembly 42 can be adjusted according to actual needs to achieve the best thermal management effect.

[0060] like Figure 5 and Figure 6 As shown, the heat sink assembly 42 includes: a plurality of fixing rods 421 fixedly disposed inside the cooling groove 413, a heat sink pile array 422 disposed on one side of the fixing rods 421, and a heat sink guide plate 423 disposed between the plurality of heat sink pile arrays 422; the heat sink assembly 42 is disposed inside the cooling groove 413.

[0061] The heat sink pile array 422 and the heat sink guide plate 423 are both arranged in a circular array inside the cooling groove 413, and the heat sink pile array 422 includes a plurality of heat sink pile bodies; the heat sink piles are arranged in an array along the extension direction of the heat sink guide plate 423, and the heat sink piles are at the same height as the heat sink guide plate 423; and the heat sink guide plate 423 is a V-shaped structure or a Y-shaped structure.

[0062] The medium inlet 414 and the medium outlet 415 are connected to an external medium source to form a heat sink passage.

[0063] like Figure 7 and Figure 8 As shown, in another embodiment, the heat sink guide plate 423 is a Y-shaped structure, the heat sink pile array 422 includes a plurality of heat sink pile bodies, and the heat sink pile bodies are circular columnar structures with increasing diameters from the inside to the outside.

[0064] The heat sink pile array 42242 and the heat sink guide plate 42343 are arranged in a circular array inside the cooling groove 41333. The heat sink pile array 42242 includes a plurality of heat sink pile bodies 421. The heat sink piles are arranged in an array along the extension direction of the heat sink guide plate 42343, and the heat sink piles are at the same height as the heat sink guide plate 42343.

[0065] One end of the laser alignment module 22 is connected to a beam expander, which is adjustable in magnification from 1.5 to 2X. The design of the fixed rod 421 and the heat sink pile array 422 in the cooling groove 413 ensures that the heat can be evenly distributed to the heat sink assembly 42, avoiding the problem of local overheating and improving the thermal stability of the entire system. The circular array arrangement of the heat sink pile array 422 and the heat sink guide plate 423, as well as the V-shaped or Y-shaped structure of the heat sink guide plate 423, provide flexible heat sink design options, and the shape and layout of the heat sink assembly 42 can be adjusted according to actual needs to achieve the best thermal management effect.

[0066] When the utility model is used, the galvanometer adapter plate 1 is correctly placed and ensured to be aligned with the fixing seat 21 of the laser alignment module 2, and the galvanometer adapter plate 1 is fixed to the fixing seat 21 using appropriate fasteners to ensure that the horizontal through holes 221 therebetween are aligned and the apertures match.

[0067] Install the first lens barrel 31 outside the laser collimation barrel 23, ensure that the first glass lens 311 in the first lens barrel 31 is correctly placed, connect the second lens barrel 32 to the first lens barrel 31, and ensure that the second glass lens 321 in the second lens barrel 32 is correctly installed, and finally, connect the third lens barrel 33 to the second lens barrel 32 and install the third quartz lens 331.

[0068] The integrated component 41 is fixed to the outside of the laser alignment module 2, ensuring that the cooling channel 412 on the integrated ring plate 411 matches the heat sink component 42, installing a cooling groove 413 inside the cooling channel 412, and filling the cooling groove 413 with a suitable cooling medium, and installing the heat sink component 42, including the fixing rod 421, the heat sink pile array 422 and the heat sink guide plate 423, to ensure effective heat dissipation.

[0069] Turn on the laser source and emit a laser beam through the laser collimation module 2, observe the shape and intensity of the laser beam, and adjust the position and angle of the lens as needed to achieve the best collimation effect.

[0070] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A laser collimation module (2) capable of multiple beam expansion, comprising: A galvanometer adapter plate (1), a laser alignment module (2) arranged on one side of the galvanometer adapter plate (1), a beam expansion structure (3) arranged at one end of the laser alignment module (2), and a heat sink structure (4) arranged outside the laser alignment module (2), characterized in that: The laser alignment module (2) comprises: a fixing seat (21), a horizontal projection tube (22) arranged between the fixing seat (21) and the galvanometer adapter plate (1), a laser alignment tube (23) arranged on one side of the fixing seat (21), a fixing plate (24) arranged inside the fixing seat (21), and a reflector (25) arranged inside the fixing plate (24); the fixing plate (24) is provided with a reflective through hole for placing the reflector (25); The beam expansion structure (3) comprises: a first lens barrel (31) arranged outside the laser collimation barrel (23), a second lens barrel (32) connected to the first lens barrel (31), and a third lens barrel (33) connected to the second lens barrel (32); a first glass lens (311) is arranged in the first lens barrel (31), a second glass lens (321) is arranged in the second lens barrel (32), and a third quartz lens (331) is arranged in the third lens barrel (33); The heat sink structure (4) comprises: a plurality of integrated components (41) arranged outside the laser alignment module (2), and a plurality of heat sink components (42) arranged inside the integrated components (41).

2. A laser alignment module (2) capable of multiple beam expansion according to claim 1, characterized in that: A horizontal through hole (221) matching with the horizontal projection tube (22) is provided at the connection between the galvanometer adapter plate (1) and the fixing seat (21) and the horizontal projection tube (22); a collimation through hole (231) matching with the laser collimation tube (23) is provided at the connection between the fixing seat (21) and the laser collimation tube (23); the aperture of the horizontal through hole (221) is larger than the aperture of the collimation through hole (231).

3. A laser alignment module (2) capable of multiple beam expansion according to claim 1, characterized in that: The fixing plate (24) is arranged in an inclined manner, and the angle between the fixing plate (24) and the horizontal plane is 45 degrees.

4. A laser alignment module (2) capable of multiple beam expansion according to claim 1, characterized in that: The first glass lens (311) is a plano-convex structure with a negative optical focal length; the second glass lens (321) is a meniscus structure with a positive optical focal length; and the third quartz lens (331) is a meniscus structure with a positive optical focal length.

5. A laser alignment module (2) capable of multiple beam expansion according to claim 4, characterized in that: The center points of the first glass lens (311), the second glass lens (321) and the third quartz lens (331) are all on the same horizontal line.

6. A laser alignment module (2) capable of multiple beam expansion according to claim 5, characterized in that: The radius of curvature R1 of one side of the first glass lens (311) is -5.7 mm, and the radius of curvature R2 of the other side of the third quartz lens (331) is 2.973 mm; the thickness D1 of the third quartz lens (331) is 3.5 mm.

7. The laser alignment module (2) capable of multiple beam expansion according to claim 5, characterized in that: The radius of curvature R3 on one side of the second glass lens (321) is 87.35 mm, and the radius of curvature R4 on the other side of the second glass lens (321) is 82.07 mm; the thickness D2 of the second glass lens (321) is 6.8 mm.

8. The laser alignment module (2) capable of multiple beam expansion according to claim 5, characterized in that: The curvature radius R5 of one side of the third quartz lens (331) is -280 mm, and the curvature radius R6 of the other side of the first glass lens (311) is -260 mm; the thickness D3 of the first glass lens (311) is 14.3 mm.

9. The laser alignment module (2) capable of multiple beam expansion according to claim 1, characterized in that: The integrated component (41) comprises: an integrated ring plate (411), a cooling channel (412) provided in the integrated ring plate (411), a plurality of cooling grooves (413) provided inside the cooling channel (412), and a medium inlet (414) and a medium outlet (415) provided outside the integrated ring plate (411).

10. A laser alignment module (2) capable of multiple beam expansion according to claim 9, characterized in that: The heat sink assembly (42) comprises: a plurality of fixing rods (421) fixedly arranged inside the cooling groove (413), a heat sink pile array (422) arranged on one side of the fixing rods (421), and a heat sink guide plate (423) arranged between the plurality of heat sink pile arrays (422); the heat sink assembly (42) is arranged inside the cooling groove (413).

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