CN210412959U

CN210412959U - Laser soldering optical lens

Info

Publication number: CN210412959U
Application number: CN201921109152.XU
Authority: CN
Inventors: 黎明; 潘文杰
Original assignee: Ruijil Wuxi Laser Technology Development Co Ltd
Current assignee: Ruijil Wuxi Laser Technology Development Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-04-28
Anticipated expiration: 2029-07-15

Abstract

The utility model relates to the technical field of laser welding, in particular to a laser soldering optical lens, which comprises a welding head component, an optical fiber alignment coupling component, an infrared temperature measurement component, a visual monitoring component and a mounting box, wherein a first reflector, a second reflector and a third reflector are arranged in the mounting box, the first reflector is arranged corresponding to the optical fiber alignment coupling component, the second reflector is arranged corresponding to the infrared temperature measurement component and the visual monitoring component, the third reflector is arranged corresponding to the first reflector, the second reflector and the welding head component, the infrared ray emitted by the infrared temperature measurement component and the near parallel light emitted by the optical fiber alignment coupling component keep coaxial, the technical scheme realizes the technical effect of three coaxial points of laser, infrared temperature measurement and visual observation, thereby improving the measurement of laser energy density when a welding piece receives laser beam irradiation and carrying out real-time visual monitoring on the welding process, the welding precision is improved, and the yield of products is finally improved.

Description

Laser soldering optical lens

Technical Field

The utility model relates to a laser welding technical field, concretely relates to laser soldering optical lens.

Background

Owing to the high energy density of laser, laser welding equipment using laser as a heating source can perform instantaneous high-temperature heating on the surface of metal by laser, thereby performing welding operation. In an actual production process, the welding process is usually controlled by detecting the temperature of the surface of the workpiece to be welded to know the energy of the laser beam acting on the surface of the workpiece to be welded.

However, in the prior art, a temperature measuring element is usually mounted outside a laser emitting head of a laser welding device in a false manner to detect the temperature change of a workpiece to be welded in real time, however, an infrared beam emitted by the externally mounted temperature measuring element is often difficult to keep coaxial with a beam emitted by a laser head, and thus the actual temperature of the workpiece to be welded at the position irradiated by the laser beam cannot be accurately measured, so that the measurement precision is not high, and the welding precision is affected.

Chinese patent CN201821078591.4 "laser welding head and laser welding equipment" discloses an optical lens device for laser welding, however, its structure is too complicated, the temperature measurement infrared ray can be coaxial with laser after passing through the polygon mirror, the error is easy to occur, its precision is not high simultaneously, it is difficult to adjust the temperature measurement infrared ray, the precision that leads to welding process is not high.

SUMMERY OF THE UTILITY MODEL

To exist not enough among the prior art, the utility model provides a laser soldering optical lens, the technical problem that solve realize laser, infrared temperature measurement and the coaxial technological effect of visual observation three point on the basis of simplifying the structure, can guarantee the high accuracy monitoring to welding process simultaneously.

In order to solve the technical problem, the utility model provides a technical scheme is: the laser tin soldering optical lens comprises a welding head component, an optical fiber alignment coupling component, an infrared temperature measurement component, a visual monitoring component and an installation box, wherein the welding head component, the optical fiber alignment coupling component, the infrared temperature measurement component and the visual monitoring component are all installed on the installation box;

be provided with first speculum in the install bin, second mirror and third speculum, first speculum corresponds the setting with optic fibre collimation coupling subassembly, the second mirror corresponds the setting with infrared temperature measurement subassembly and vision monitoring subassembly simultaneously, and vision monitoring subassembly is located the opposite side of second mirror for infrared temperature measurement subassembly, the third speculum simultaneously with first speculum, the second mirror corresponds the setting with the welded joint subassembly, the infrared ray of infrared temperature measurement subassembly transmission passes second mirror and third speculum arrival welded joint subassembly in proper order, the nearly parallel light of optic fibre collimation coupling subassembly transmission reaches the welded joint subassembly through first speculum and third speculum in proper order, the infrared ray of infrared temperature measurement subassembly transmission and the nearly parallel light of optic fibre collimation coupling subassembly transmission keep coaxial.

Further, optics collimation coupling subassembly includes hollow first outer casing, first outer casing and install bin fixed connection, vertical first spout has been seted up on the first outer casing, the inside of first outer casing is provided with hollow first inlayer casing, be provided with the rectangle rack on the first inlayer casing, rectangle rack block is in first spout, the length of first spout is greater than the length of rectangle rack, still be provided with micro motor on the first outer casing, micro motor rotates and is connected with the roller gear, roller gear and rectangle rack phase-match set up.

Furthermore, the top end of the first inner shell is provided with an optical fiber connector, the optical fiber connector is externally connected with an optical fiber, a first optical focusing mirror is horizontally arranged inside the first inner shell, and the first optical focusing mirror and the first reflecting mirror are correspondingly arranged.

Further, optics collimation coupling subassembly includes the outer casing of hollow second, the outer casing of second and install bin fixed connection, set up the obliquely second spout on the outer casing of second, the inside of the outer casing of second is provided with hollow second inlayer casing, vertical third spout has been seted up on the second inlayer casing, it is provided with the sliding block to slide in the casing of second inlayer, be provided with the shifting block on the sliding block, the shifting block is block simultaneously in second spout and third spout and stretch out outside the second spout, the horizontal block of sliding block has second optics focusing mirror, second optics focusing mirror corresponds the setting with first speculum.

Furthermore, the top end of the second inner shell is provided with an optical fiber connector, and the optical fiber connector is externally connected with an optical fiber.

Further, infrared temperature measurement subassembly includes the temperature probe adjustment frame, the temperature probe adjustment frame includes upper adjustment plate and lower floor's fixed plate, the fixed plate of lower floor is fixed on the install bin, the both ends of keeping away from on the upper adjustment plate wear to be equipped with first screw thread pair and second screw thread pair respectively, the adjustment groove has been seted up on the top surface of lower floor's fixed plate, the adjustment groove is located under the second screw thread pair, the bottom of first screw thread pair and second screw thread pair all is globular, the bottom of first screw thread pair meets with the top surface of lower floor's fixed plate, the bottom block of second screw thread pair is in the adjustment inslot, it has the steel ball still to block between upper adjustment plate and the lower floor's fixed plate, coaxial infrared temperature measurement passageway has vertically been seted up on upper adjustment plate and the lower floor's fixed plate, be provided with temperature measurement probe on the upper adjustment plate, the infrared ray of temperature measurement probe transmission.

Furthermore, the upper layer adjusting plate and the lower layer fixing plate are square plates with the same size, the first thread pair and the second thread pair are respectively positioned at two opposite corners, and the steel ball is positioned at the other corner.

Furthermore, screws penetrate through the upper adjusting plate and the lower fixing plate and are fixed on the lower fixing plate, and gaps exist between the screws and the upper adjusting plate.

The utility model discloses a three speculum intercombination's structure has realized laser, infrared temperature measurement and the coaxial technological effect of visual observation three points to improved and treated the measurement accuracy of welding piece laser energy density when receiving laser beam and shine, also can survey the temperature variation of welding department simultaneously, and can carry out real-time visual monitoring to welding process, improved the welded precision, finally improved the yields of product.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic perspective view of a laser soldering optical lens according to

embodiment

1 or 2 of the present invention;

fig. 2 is a front view of the laser soldering optical lens of the present invention in

embodiment

1 or 2;

fig. 3 is a schematic structural diagram of an optical fiber collimating and coupling assembly in embodiment 1 of the laser soldering optical lens of the present invention;

fig. 4 is a schematic view of an internal structure of an optical fiber alignment coupling assembly in embodiment 1 of the laser soldering optical lens of the present invention;

fig. 5 is a cross-sectional view of an optical fiber collimating and coupling assembly in embodiment 1 of the laser soldering optical lens of the present invention;

fig. 6 is a schematic structural view of an infrared temperature measurement component in

embodiment

1 or 2 of the laser soldering optical lens of the present invention;

FIG. 7 is a schematic view of the structure of the upper adjustment plate and the lower fixing plate of the infrared temperature measurement module in

embodiment

1 or 2 according to the present invention

Fig. 8 is a schematic structural view of an optical fiber collimating and coupling assembly in embodiment 2 of the laser soldering optical lens of the present invention;

FIG. 9 is an illustration of the explosion structure of the fiber alignment coupling assembly of the laser soldering optical lens of the present invention in embodiment 2

Fig. 10 is a cross-sectional view of an optical fiber alignment coupling assembly in embodiment 2 of the laser soldering optical lens of the present invention.

In the figure: 1-welding head assembly, 2-optical fiber alignment coupling assembly, 21-first outer shell, 211-first flowers, 22-first inner shell, 221-rectangular rack, 222-optical fiber connector, 223-first optical focusing mirror, 23-micro motor, 231-cylindrical gear, 24-second outer shell, 241-second sliding chute, 25-second inner shell, 251-third sliding chute, 252-sliding block, 253-shifting block, 254-second optical focusing mirror, 3-infrared temperature measurement assembly, 31-probe adjusting frame, 311-upper adjusting plate, 31111-first thread pair, 3112-second thread pair, 312-lower fixing plate, 3121-infrared temperature measurement channel, 313-adjusting groove, 314-steel ball, 315-temperature measuring probe, 316-screw, 4-visual monitoring component, 5-installation box, 51-first reflector, 52-second reflector and 53-third reflector.

Detailed Description

The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and it should be understood that the preferred embodiments are described herein for purposes of illustration and explanation, and not limitation.

As shown in fig. 1 to 7, the laser soldering optical lens can achieve the technical effects of laser, infrared temperature measurement and visual observation of three-point coaxiality under a simple structure, thereby improving the measurement precision of laser energy density when a strip welding part receives laser beam irradiation, simultaneously measuring the temperature change of a welding part, visually monitoring the welding process in real time, improving the welding precision and finally improving the yield of products. Specifically, the laser soldering optical lens comprises a welding head assembly 1, an optical fiber alignment coupling assembly 2, an infrared temperature measurement assembly 3, a vision monitoring assembly 4 and an installation box 5, wherein the welding head assembly 1, the optical fiber alignment coupling assembly 2, the infrared temperature measurement assembly 3 and the vision monitoring assembly 4 are all installed on the installation box 5. The welding head assembly 1 is mainly used for emitting laser to a part to be welded for welding after receiving parallel light, the optical fiber collimation coupling assembly 2 is mainly used for connecting optical fibers and transmitting the laser, the infrared temperature measurement assembly 3 is mainly used for measuring the laser energy density of the part to be welded, which is irradiated by the laser, by using temperature measurement infrared rays and measuring the temperature of the welding part, so that the real-time monitoring of the welding effect is realized, and the visual monitoring assembly is mainly used for realizing the complete process of observing the laser welding in real time.

The installation box 5 is internally provided with a first reflector 51, a second reflector 52 and a third reflector 53, and the reflector groups formed by the three reflectors are mutually matched to finish the whole process of laser transmission and reflection. The first reflector 51 is disposed corresponding to the light collimating and coupling assembly 2, so that the near-parallel light converged by the light collimating and coupling assembly 2 can be irradiated onto the first reflector 51. The second mirror 52 corresponds the setting with infrared temperature measurement subassembly 3 and vision monitoring subassembly 4 simultaneously, can make the infrared ray of infrared temperature measurement subassembly 3 transmission shine on the second mirror 52 like this, and simultaneously, the object after the formation of image of light reflection also can shine on the vision monitoring subassembly 4 through the second mirror 52. And the vision monitoring component 4 is positioned at the other side of the second reflector 52 relative to the infrared temperature measurement component 3, so that the purpose of meeting the infrared temperature measurement while imaging can be realized only by one reflector, and the space is saved.

The third reflector 53 is simultaneously arranged corresponding to the first reflector 51, the second reflector 52 and the welding head assembly 1, infrared rays emitted by the infrared temperature measurement assembly 3 sequentially pass through the second reflector 52 and the third reflector 53 to reach the welding head assembly 1, and near-parallel light emitted by the optical fiber collimating and coupling assembly 2 sequentially passes through the first reflector 51 and the third reflector 53 to reach the welding head assembly 1. Therefore, the third reflector 53, the first reflector 51 and the second reflector 52 form a right triangle, three effects of laser transmission, infrared temperature measurement and visual imaging are achieved under the condition that only three reflectors are adopted, the space is saved, the utilization rate is improved, and meanwhile, the structure is simplified and the effect is good. The infrared rays emitted by the infrared temperature measurement component 3 and the near-parallel light emitted by the optical fiber collimation coupling component 2 keep coaxial, so that in the laser welding process, the temperature measurement infrared rays can accurately measure the laser energy density of a part to be welded under the irradiation of laser beams, and meanwhile, the temperature change of the welding part of the part to be welded can also be measured, so that the real-time monitoring of the welding effect is realized, and the yield is improved.

In this embodiment, the optical alignment coupling assembly 2 includes a hollow first outer shell 21, the first outer shell 21 is fixedly connected to the mounting box 5, a vertical first sliding groove 211 is formed in the first outer shell 21, a hollow first inner shell 22 is disposed inside the first outer shell 21, a rectangular rack 221 is disposed on the first inner shell 22, the rectangular rack 221 is slidably engaged with the first sliding groove 211, and the length of the first sliding groove 211 is greater than that of the rectangular rack 221, so that the rectangular rack 221 can slide up and down in the first sliding groove 211. The first outer shell 21 is further provided with a micro motor 23, the micro motor 23 is in transmission connection with a cylindrical gear 231, and the cylindrical gear 231 is matched with the rectangular rack 221. Since the first outer shell 21 is fixed on the mounting box 5 and the micro motor 23 is fixed on the first outer shell 21, when the micro motor 23 is started, the micro motor 23 drives the cylindrical gear 231 to rotate, so as to drive the rectangular rack 221 to move up and down, and the rectangular rack 221 drives the first inner shell 22 to move up and down. By adjusting the height of the first inner shell 22, the distance from the optical fiber coupling output collimation focusing port to the optical focusing lens can be controlled, so that the size of a light spot falling on the optical focusing lens can be adjusted, the energy and the density of laser can be adjusted, and the accuracy and the efficiency of a laser soldering process can be further improved.

In the present embodiment, the top end of the first inner shell 22 is provided with an optical fiber connector 222, the optical fiber connector 222 is externally connected with an optical fiber, the first inner shell 22 is horizontally provided with a first optical focusing mirror 223, and the first optical focusing mirror 223 is arranged corresponding to the first reflector 51. Divergent light transmitted from the optical fiber can be changed into parallel light through the fiber coupling output collimation focusing port in the optical fiber connector 222 and irradiated onto the first optical focusing mirror 223, the parallel light irradiated onto the first optical focusing mirror 223 can be irradiated onto the first reflecting mirror 51 through the corresponding arrangement of the first optical focusing mirror 223 and the first reflecting mirror 51, then the first reflecting mirror 51 can emit laser onto the third reflecting mirror 53, and finally laser welding is realized through the welding head assembly 1.

In this embodiment, the infrared temperature measurement component 3 includes a temperature probe adjusting frame 31, and the temperature probe adjusting frame mainly functions to adjust the angle and direction of the temperature measurement infrared rays emitted by the temperature measurement probe, so that the temperature measurement infrared rays are coaxial with the laser, and the measurement accuracy is improved. This temperature probe alignment jig 31 includes upper adjustment plate 311 and lower floor's fixed plate 312, and wherein, lower floor's fixed plate 312 is fixed on install bin 5, and the both ends of keeping away from each other on upper adjustment plate 311 wear to be equipped with first screw pair 3111 and second screw pair 3112 respectively, has seted up adjustment groove 313 on the top surface of lower floor's fixed plate 312, and this adjustment groove 313 is located second screw pair 3112 under. Meanwhile, the bottom ends of the first thread pair 3111 and the second thread pair 3112 are both spherical, the bottom end of the first thread pair 3111 is connected with the top surface of the lower fixing plate 312, the bottom end of the second thread pair 3112 is clamped in the adjusting groove 313, and the steel ball 314 is clamped between the upper adjusting plate 311 and the lower fixing plate 312. Because the bottom of first thread pair 3111 and second thread pair 3112 all butts against lower floor fixed plate 312, therefore, first thread pair 3111 and second thread pair 3112 and steel ball 314 all can play a fixed effect of supporting, simultaneously, because its bottom is globular, and second thread pair 3112 is the block in the adjustment groove 313 that is a little lower than the top surface of lower floor fixed plate 312, and steel ball 314 is also globular, consequently can realize adjusting the angle of upper adjustment plate 311 through the position of adjusting second thread pair 3112. Be provided with temperature probe 315 on upper adjustment plate 311, still vertically set up coaxial infrared temperature measurement passageway 3121 on upper adjustment plate 311 and the lower floor fixed plate 312, the infrared ray that temperature probe 315 launched passes through infrared temperature measurement passageway 3121 and reachs soldered connection subassembly 1, can so that the angle through adjustment upper adjustment plate 311, can adjust the angle and the direction of the temperature measurement infrared ray that temperature probe 315 sent, thereby make it coaxial with laser, in order to improve the temperature measurement precision.

In this embodiment, the upper adjustment plate 311 and the lower fixing plate 312 are square plates with the same size, the first thread pair 3111 and the second thread pair 3112 are respectively located at two opposite corners, and the steel ball 314 is located at the other corner, because the structure is a regular pattern, the design of the orientations of the first thread pair 3111, the second thread pair 3112 and the steel ball 314 at the three corners can effectively balance the forces in all directions, thereby facilitating the adjustment of the upper adjustment plate 311.

In the present embodiment, the screws 316 are inserted into the upper adjustment plate 311 and the lower fixing plate 312, and the screws 316 are fixed to the lower fixing plate 312 with a gap from the upper adjustment plate 311. The screw mainly plays a limiting role, and the screw and the lower fixing plate 312 enable the screw and the lower fixing plate to be incapable of freely moving, but the screw penetrates through the upper adjusting plate 311 and has a gap with the upper adjusting plate 311, so that when the upper adjusting plate 311 is adjusted, the screw 316 can limit the adjusting range of the upper adjusting plate 311, and the practicability is further improved.

As shown in fig. 8 to 10, in the present embodiment, the optical alignment coupling assembly 2 includes a hollow second outer shell 24, the second outer shell 24 is fixedly connected to the mounting box 5, a second oblique sliding slot 241 is formed in the second outer shell 24, a hollow second inner shell 25 is disposed inside the second outer shell 24, a vertical third sliding slot 251 is formed in the second inner shell 25, a sliding block 252 is slidably disposed in the second inner shell 24, a shifting block 253 is disposed on the sliding block 252, the shifting block 253 is simultaneously engaged with the second sliding slot 241 and the third sliding slot 253 and extends out of the second sliding slot 241, so that the sliding block 252 can be rotated up or down by obliquely shifting the shifting block 253. A second optical focusing mirror 254 is horizontally engaged in the slider 252, and the second optical focusing mirror 254 is disposed to correspond to the first reflecting mirror 51. Therefore, when the energy and the density of laser are required to be adjusted, the shifting block 253 can be manually shifted through the operation, so that the sliding block 252 is controlled to ascend or descend, the distance from the optical fiber coupling collimation focusing port to the optical focusing lens is adjusted, the size of a light spot falling onto the optical focusing lens is adjusted, the energy and the density of the laser are adjusted, and the accuracy and the efficiency of a laser soldering process are further improved. Meanwhile, the second optical focusing mirror 254 is arranged corresponding to the first reflecting mirror 51, so that the second optical focusing mirror 254 can reflect the laser to the first reflecting mirror 51, and then the laser is reflected to the third reflecting mirror 53 by the first reflecting mirror 51, and finally the laser is emitted by the welding head 1 assembly for welding.

In this embodiment, the top end of the second inner housing 25 is provided with an optical fiber connector 222, and the optical fiber connector 222 is externally connected with an optical fiber. This allows the diverging light transmitted from the fiber to be converted into near-parallel light through the fiber-out-coupling collimating focusing port in the fiber connector 222 and then to the second optical focusing mirror 254.

To sum up, the utility model discloses laser soldering optical lens's theory of operation is: the optical fiber is connected to the optical fiber connector 222 of the optical fiber alignment coupling assembly 2, the distance from the optical fiber connector 222 to the first optical focusing mirror 223 or the second optical focusing mirror 254 is adjusted by driving the micro motor 23 or manually shifting the shifting block 253, so as to change the size of a light spot irradiated on the first optical focusing mirror 223 or the second optical focusing mirror 254, and meanwhile, the light spot is emitted from the welding head assembly 1 through the first reflecting mirror 51 and the third reflecting mirror 53, so that the density and the energy size of laser can be further changed, and the precision, the time and the like in the soldering process can be adjusted. Meanwhile, the belt welding piece can be imaged to the visual monitoring assembly 4 through the third reflecting mirror 53 and the second reflecting mirror 52, so that the visual monitoring of a welding process is facilitated for workers, and the precision and the yield of the process are further improved. Finally, the direction and the angle of the temperature measuring infrared rays emitted by the temperature measuring probe 315 can be adjusted by adjusting the upper adjusting plate 312, so that the temperature measuring infrared rays are coaxial with the laser, and the monitoring of the laser energy density and the temperature of the part to be welded, which is irradiated by the laser, is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Laser soldering optical lens, its characterized in that: the device comprises a welding head component (1), an optical fiber collimation coupling component (2), an infrared temperature measurement component (3), a vision monitoring component (4) and an installation box (5), wherein the welding head component (1), the optical fiber collimation coupling component (2), the infrared temperature measurement component (3) and the vision monitoring component (4) are all installed on the installation box (5);

be provided with first speculum (51), second mirror (52) and third speculum (53) in install bin (5), first speculum (51) with optical fiber collimation coupling subassembly (2) correspond the setting, second mirror (52) simultaneously with infrared temperature measurement subassembly (3) with vision monitoring subassembly (4) correspond the setting, just vision monitoring subassembly (4) for infrared temperature measurement subassembly (3) are located the opposite side of second mirror (52), third speculum (53) simultaneously with first speculum (51), second mirror (52) and welding head subassembly (1) correspond the setting, the infrared ray of infrared temperature measurement subassembly (3) transmission passes in proper order the second mirror (52) with third speculum (53) reachs welding head subassembly (1), nearly parallel light of optical fiber collimation coupling subassembly (2) transmission passes through in proper order first speculum (51) And the third reflector (53) reaches the welding head assembly (1), and the infrared rays emitted by the infrared temperature measuring assembly (3) and the near-parallel light emitted by the optical fiber collimation coupling assembly (2) keep coaxial.

2. The laser soldering optical lens according to claim 1, characterized in that: the optical fiber collimating and coupling assembly (2) comprises a hollow first outer shell (21), the first outer shell (21) is fixedly connected with the installation box (5), a vertical first sliding groove (211) is formed in the first outer shell (21), a hollow first inner shell (22) is arranged inside the first outer shell (21), a rectangular rack (221) is arranged on the first inner shell (22), the rectangular rack (221) is slidably clamped in the first sliding groove (211), the length of the first sliding groove (211) is larger than that of the rectangular rack (221), a micro motor (23) is further arranged on the first outer shell (21), the micro motor (23) is connected with a cylindrical gear (231) in a transmission mode, and the cylindrical gear (231) is matched with the rectangular rack (221).

3. The laser soldering optical lens according to claim 2, wherein: the top end of the first inner shell (22) is provided with an optical fiber connector (222), the optical fiber connector (222) is externally connected with an optical fiber, a first optical focusing mirror (223) is horizontally arranged inside the first inner shell (22), and the first optical focusing mirror (223) and the first reflector (51) are correspondingly arranged.

4. The laser soldering optical lens according to claim 1, characterized in that: the optical fiber collimating coupling assembly (2) comprises a hollow second outer shell (24), the second outer shell (24) is fixedly connected with the installation box (5), an inclined second sliding groove (241) is formed in the second outer shell (24), a hollow second inner shell (25) is arranged in the second outer shell (24), a vertical third sliding chute (251) is arranged on the second inner shell (25), a sliding block (252) is arranged in the second inner layer shell (25) in a sliding way, a shifting block (253) is arranged on the sliding block (252), the shifting block (253) is simultaneously clamped in the second sliding groove (241) and the third sliding groove (251) and extends out of the second sliding groove (241), a second optical focusing lens (254) is horizontally clamped in the sliding block (252), the second optical focusing mirror (254) is arranged corresponding to the first reflecting mirror (51).

5. The laser soldering optical lens according to claim 4, wherein: the top end of the second inner shell (25) is provided with an optical fiber connector (222), and the optical fiber connector (222) is externally connected with an optical fiber.

6. The laser soldering optical lens according to claim 1, characterized in that: the infrared temperature measurement component (3) comprises a temperature probe adjusting frame (31), the temperature probe adjusting frame (31) comprises an upper layer adjusting plate (311) and a lower layer fixing plate (312), the lower layer fixing plate (312) is fixed on the installation box (5), two ends, far away from each other, of the upper layer adjusting plate (311) are respectively provided with a first thread pair (3111) and a second thread pair (3112) in a penetrating manner, the top surface of the lower layer fixing plate (312) is provided with an adjusting groove (313), the adjusting groove (313) is positioned under the second thread pair (3112), the bottom ends of the first thread pair (3111) and the second thread pair (3112) are both spherical, the bottom end of the first thread pair (3111) is connected with the top surface of the lower layer fixing plate (312), the bottom end of the second thread pair (3112) is positioned in the adjusting groove (313), a steel ball (314) is clamped between the upper layer adjusting plate (311) and the lower layer fixing plate (312), coaxial infrared temperature measuring channels (3121) are vertically formed in the upper adjusting plate (311) and the lower fixing plate (312), a temperature measuring probe (315) is arranged on the upper adjusting plate (311), and infrared rays emitted by the temperature measuring probe (315) reach the welding head assembly (1) through the infrared temperature measuring channels (3121).

7. The laser soldering optical lens according to claim 6, wherein: the upper-layer adjusting plate (311) and the lower-layer fixing plate (312) are square plates with the same size, the first thread pair (3111) and the second thread pair (3112) are respectively located at two opposite corners, and the steel ball (314) is located at the other corner.

8. The laser soldering optical lens according to claim 6, wherein: the upper-layer adjusting plate (311) and the lower-layer fixing plate (312) are provided with screws (316) in a penetrating mode, the screws (316) are fixed on the lower-layer fixing plate (312), and gaps exist between the screws (316) and the upper-layer adjusting plate (311).