CN221039502U - End face imaging mechanism and laser welding machine - Google Patents

Abstract

The utility model discloses an end face imaging mechanism and a laser welding machine, wherein the end face imaging mechanism comprises an optical assembly, an imaging assembly and a moving assembly, and the optical assembly is provided with a first light inlet face, a second light inlet face and a light outlet face; the first light inlet surface is used for receiving a first end surface image of the first optical fiber, and the second light inlet surface is used for receiving a second end surface image of the second optical fiber; the optical assembly comprises a reflecting mirror and a spectroscope, the spectroscope comprises a transmission surface and a reflecting surface, and the reflecting surface is used for reflecting the first end surface image from the first light inlet surface to the light outlet surface; the reflecting mirror is used for reflecting the second end face image from the second light inlet face to the transmission face and transmitting the second end face image to the light outlet face through the transmission face. The utility model realizes that the stress areas of the end surfaces of the two polarization maintaining optical fibers can be mutually observed and aligned, thereby supporting the welding of the polarization maintaining optical fibers.

Description

End face imaging mechanism and laser welding machine

Technical Field

The utility model relates to the technical field of optical fiber fusion welding, in particular to an end face imaging mechanism and a laser fusion welding machine.

Background

The polarization maintaining fiber can transmit linearly polarized light, has strong holding capacity on the polarization state of the polarized light, and is widely applied to sensors such as fiber optic gyroscopes, fiber optic hydrophones and the like and fiber optic communication systems such as DWDM, EDFA and the like. The principle of the polarization-maintaining fiber is that a stress area is introduced into a cladding, and the stress area is symmetrically distributed around a fiber core to generate double refraction on incident light so as to maintain the polarization of polarized light. In the fusion process of the polarization maintaining fiber, the stress area of the fiber is aligned with the fiber as well as the Ji Qianxin. The collimation accuracy of the stress area directly determines the welding loss and extinction ratio, and influences the welding quality.

The laser fusion splicer is commonly used for optical fiber fusion splicing, and the main principle is that two optical fibers are mutually fused by heating with carbon dioxide laser; however, in the related art, the laser fusion splicer does not have an end face imaging function, and the stress areas of the end faces of the two polarization maintaining fibers cannot be mutually observed and aligned, so that fusion of the polarization maintaining fibers cannot be supported.

It should be noted that the foregoing is only used to assist in understanding the technical solution of the present utility model, and does not represent an admission that the foregoing is prior art.

Disclosure of utility model

The utility model mainly aims to provide an end face imaging mechanism and a laser welding machine, which aim to realize mutual observation alignment of stress areas of two polarization maintaining optical fiber end faces so as to support welding of the polarization maintaining optical fibers.

In order to achieve the above object, the present utility model proposes an end face imaging mechanism applied to a laser welding machine; the optical assembly is provided with a first light inlet surface, a second light inlet surface and a light outlet surface, wherein the first light inlet surface and the second light inlet surface are oppositely arranged; the first light inlet surface is used for receiving a first end surface image of the first optical fiber, and the second light inlet surface is used for receiving a second end surface image of the second optical fiber; the optical assembly comprises a reflecting mirror and a spectroscope, the spectroscope comprises a transmission surface and a reflecting surface, and the reflecting surface is used for reflecting the first end surface image from the first light inlet surface to the light outlet surface; the reflecting mirror is used for reflecting the second end face image from the second light inlet face to the transmission face and transmitting the second end face image to the light outlet face through the transmission face; the imaging component is arranged in the projection direction of the light-emitting surface and is used for imaging the first end face image and the second end face image; the moving component is used for driving the optical component to move between the first optical fiber and the second optical fiber, so that the first light inlet surface is aligned with the first optical fiber, and the second light inlet surface is aligned with the second optical fiber.

Optionally, the reflecting mirror and the spectroscope form an included angle of 90 degrees, the first light inlet surface and the second light inlet surface are vertically arranged, and the light outlet surface is horizontally arranged.

Optionally, the imaging assembly is interconnected with the optical assembly, the imaging assembly including a first imaging camera.

Optionally, the moving assembly includes a first moving module and a second moving module, the optical assembly is mounted on the first moving module, the first moving module is mounted on the second moving module, and the second moving module is fixedly connected with the laser welding machine; the first moving module is used for driving the optical assembly to slide along a first direction, and the second moving module is used for driving the first moving module to slide along a second direction, wherein the first direction and the second direction are mutually perpendicular.

Optionally, the first moving module includes a first mounting seat and a first driving device; the first mounting seat is used for mounting the optical component, and the first driving device is used for driving the first mounting seat to slide along a first direction; the first driving device comprises a first rotating motor and a first screw rod, the first screw rod is arranged in an extending mode along a first direction, the driving end of the first rotating motor is connected with the first screw rod, and the first screw rod is in transmission connection with the first mounting seat screw rod; and/or the second mobile module comprises a second mounting seat and a second driving device; the second mounting seat is used for mounting the first driving device, and the second driving device is used for driving the second mounting seat to slide along a second direction; the second driving device comprises a second rotating motor and a second screw rod, the second screw rod extends along a second direction, the driving end of the second rotating motor is connected with the second screw rod, and the second screw rod is in transmission connection with the second mounting seat screw rod.

Optionally, the first moving module further comprises a first guiding structure, wherein the first guiding structure comprises a first sliding rail arranged on the second mounting seat and a first sliding block arranged on the first mounting seat; the first sliding rail is arranged in an extending mode along a first direction, and the first sliding block is connected with the first sliding rail in a sliding mode; and/or the second moving module further comprises a second guiding structure, wherein the second guiding structure comprises a second sliding rail arranged on the laser welding machine and a second sliding block arranged on the second mounting seat; the second sliding rail extends along a second direction, and the second sliding block is in sliding connection with the second sliding rail.

In order to achieve the above object, the present utility model provides a laser welding machine, comprising a substrate, wherein two clamping adjusting mechanisms, a laser heat source mechanism, a side imaging mechanism and the end face imaging mechanism are arranged on the substrate; the two clamping and adjusting mechanisms are respectively positioned on two opposite sides of the substrate, and the laser heat source mechanism, the side imaging mechanism and the end face imaging mechanism are positioned between the two clamping and adjusting mechanisms.

Optionally, the clamping and adjusting mechanism comprises a clamping part and a six-dimensional adjusting part which are connected; the clamping part is used for clamping the first optical fiber or the second optical fiber, and the six-dimensional adjusting part is used for adjusting displacement of the X axis/Y axis/Z axis and adjusting rotation angle of the clamping part.

Optionally, the laser heat source mechanism comprises a laser generator and a multi-path light-splitting device, wherein the multi-path light-splitting device comprises a plurality of laser single beams which are used for splitting laser beams generated by the laser generator into four laser beams which are distributed in an annular mode at equal distances relative to a welding center.

Optionally, the side imaging mechanism includes a first side imaging component and a second side imaging component, where the first side imaging component is configured to acquire a first radial first side image of the first optical fiber and the second optical fiber, and the second side imaging component is configured to acquire a second radial second side image of the first optical fiber and the second optical fiber, and where the first radial direction and the second radial direction are perpendicular to each other.

Compared with the prior art, the utility model has the beneficial effects that:

The optical assembly is moved between the first optical fiber and the second optical fiber through the moving assembly, so that the first light inlet surface and the second light inlet surface of the optical assembly are aligned with the end surfaces of the first optical fiber and the second optical fiber respectively, a first end surface image of the first optical fiber is reflected to the light outlet surface through the reflecting surface of the spectroscope, and a second end surface image of the second optical fiber is transmitted to the light outlet surface through the reflecting mirror and the transmission surface of the spectroscope in sequence; therefore, the imaging component positioned in the projection direction of the light emitting surface can image the first end surface image and the second end surface image; after the first end face image and the second end face image output by the imaging component are compared and observed by an operator, the first optical fiber and the second optical fiber are subjected to displacement adjustment and rotation angle adjustment of an X axis/Y axis/Z axis by using a clamping and adjusting mechanism of a laser welding machine, so that the aim of mutually aligning stress areas of the end faces of the first optical fiber and the second optical fiber is fulfilled, and the welding of the polarization maintaining optical fiber is supported.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an optical assembly in an embodiment of an end-face imaging mechanism according to the present utility model;

FIG. 2 is a schematic diagram of an end-face imaging mechanism according to one embodiment of the present utility model;

FIG. 3 is a schematic diagram of an end-face imaging mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a laser fusion machine according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a clamping adjustment mechanism in an embodiment of a laser welding machine according to the present utility model;

FIG. 6 is a schematic view of a laser heat source mechanism in an embodiment of a laser welder according to the present utility model;

FIG. 7 is a schematic diagram of a laser heat source mechanism in an embodiment of a laser fusion machine according to the present utility model;

FIG. 8 is a schematic diagram of a side imaging mechanism in an embodiment of the laser fusion machine of the present utility model.

The names of the components marked in the figures are as follows:

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is shown, however, some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if there is a directional indication (such as up, down, left, right, front, and rear … …) in the embodiment of the present utility model, the directional indication is merely used to explain the relative positional relationship, movement situation, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed.

Furthermore, it should be noted that the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The embodiment discloses an end face imaging mechanism which is applied to a laser welding machine; referring to fig. 1-3, the optical assembly 2 comprises an optical assembly 2, an imaging assembly 3 and a moving assembly 4, wherein the optical assembly 2 is provided with a first light inlet surface, a second light inlet surface and a light outlet surface, and the first light inlet surface and the second light inlet surface are oppositely arranged; the first light inlet surface is used for receiving a first end surface image of the first optical fiber, and the second light inlet surface is used for receiving a second end surface image of the second optical fiber; the optical assembly 2 includes a reflecting mirror 201 and a beam splitter 202, the beam splitter 202 includes a transmitting surface 2021 and a reflecting surface 2022, and the reflecting surface 2022 is used for reflecting the first end surface image from the first light inlet surface to the light outlet surface; the reflecting mirror 201 is configured to reflect the second end face image from the second light inlet face to the transmission face 2021, and transmit the second end face image to the light outlet face through the transmission face 2021; the imaging component 3 is arranged in the projection direction of the light-emitting surface, and the imaging component 3 is used for carrying out imaging processing on the first end surface image and the second end surface image; the moving component 4 is used for driving the optical component 2 to move between the first optical fiber and the second optical fiber, so that the first light incoming surface is aligned with the first optical fiber, and the second light incoming surface is aligned with the second optical fiber.

In this embodiment, the moving assembly 4 moves the optical assembly 2 between the first optical fiber and the second optical fiber, so that the first light inlet surface and the second light inlet surface of the optical assembly 2 are aligned with the end surfaces of the first optical fiber and the second optical fiber respectively, and further the first end surface image of the first optical fiber is reflected to the light outlet surface through the reflecting surface 2022 of the spectroscope 202, and the second end surface image of the second optical fiber is sequentially transmitted to the light outlet surface through the reflecting mirror 201 and the transmitting surface 2021 of the spectroscope 202; thereby enabling the imaging component 3 positioned in the projection direction of the light emitting surface to perform imaging processing on the first end surface image and the second end surface image; after the operator compares and observes the first end face image and the second end face image output by the imaging component 3, the first optical fiber and the second optical fiber are subjected to displacement adjustment and rotation angle adjustment of an X axis/Y axis/Z axis by utilizing a clamping and adjusting mechanism 8 of a laser welding machine, so that the aim of mutually aligning stress areas of the end faces of the first optical fiber and the second optical fiber is fulfilled, and the welding of the polarization maintaining optical fiber is supported.

As a preferred solution of the above embodiment, referring to fig. 1, the reflecting mirror 201 and the beam splitter 202 are disposed at an angle of 90 degrees, the first light incident surface and the second light incident surface are disposed vertically, and the light emergent surface is disposed horizontally. The first light inlet surface and the second light inlet surface are vertically arranged, so that the first end surface image of the first optical fiber and the second end surface image of the second optical fiber which are horizontally arranged are ensured to be successfully acquired. Because the light-emitting surface is horizontally arranged, the position of the imaging component 3 positioned in the projection direction of the light-emitting surface is convenient to adjust, namely, the imaging component 3 is only required to be ensured to be horizontally arranged. In this embodiment, the projection direction of the light emitting surface is set vertically downward along the Z-axis, so the imaging component 3 is located at a position directly below the optical component 2.

As a preferred version of the above embodiment, the imaging assembly 3 is interconnected with the optical assembly 2, the imaging assembly 3 comprising a first imaging camera. The imaging component 3 and the optical component 2 are mutually connected, namely, the imaging component 3 and the optical component 2 form an integral structure, so that the position between the imaging component 3 and the optical component 2 is adjusted in the equipment production link, the imaging component 3 is ensured to be positioned in the projection direction of the light emitting surface of the optical component 2, the position debugging link between the imaging component 3 and the optical component 2 in the equipment installation link is saved, and the installation efficiency is improved. The first imaging camera and the second imaging camera 10011 in the present embodiment can be selected as a CCD camera, which has the characteristics of small size, light weight, no influence of magnetic field, shock resistance and impact resistance, and is widely used.

As a preferred scheme of the above embodiment, referring to fig. 2-3, the moving assembly 4 includes a first moving module 5 and a second moving module 6, the optical assembly 2 is mounted on the first moving module 5, the first moving module 5 is mounted on the second moving module 6, and the second moving module 6 is fixedly connected with the laser welding machine; the first moving module 5 is used for driving the optical assembly 2 to slide along a first direction, and the second moving module 6 is used for driving the first moving module 5 to slide along a second direction, wherein the first direction and the second direction are mutually perpendicular. By combining the first moving module 5 and the second moving module 6, the optical assembly 2 can move in the first direction and the second direction at the same time, so that the optical assembly 2 can move between the first optical fiber and the second optical fiber smoothly. In this embodiment, the first direction is the Z-axis direction, and the second direction is the Y-axis direction.

Specifically, the first mobile module 5 includes a first mount 501 and a first driving device 502; the first mounting seat 501 is used for mounting the optical component 2, and the first driving device 502 is used for driving the first mounting seat 501 to slide along a first direction; the first driving device 502 comprises a first rotating motor 5021 and a first screw rod 5022, the first screw rod 5022 is arranged in an extending mode along a first direction, a driving end of the first rotating motor 5021 is connected with the first screw rod 5022, and the first screw rod 5022 is in screw transmission connection with the first mounting seat 501; and/or the second moving module 6 includes a second mount 601 and a second driving device 602; the second mounting seat 601 is used for mounting the first driving device 502, and the second driving device is used for driving the second mounting seat 601 to slide along the second direction; the second driving device 602 includes a second rotating motor 6021 and a second screw 6022, the second screw 6022 extends along the second direction, the driving end of the second rotating motor 6021 is connected to the second screw 6022, and the second screw 6022 is connected to the second mounting seat 601 in a screw driving manner. So set up, utilize lead screw transmission principle to realize that first drive arrangement 502 drives first mount pad 501 and removes to and second drive arrangement 602 drives the second mount pad 601 and remove, simple structure practicality is strong.

Specifically, the first moving module 5 further includes a first guiding structure 503, where the first guiding structure 503 includes a first sliding rail 5031 disposed on the second mounting seat 601, and a first slider 5032 disposed on the first mounting seat 501; the first sliding rail 5031 extends along a first direction, and the first sliding block 5032 is slidably connected with the first sliding rail 5031; and/or, the second moving module 6 further comprises a second guiding structure 603, wherein the second guiding structure 603 comprises a second sliding rail 6031 arranged on the laser welding machine and a second sliding block 6032 arranged on the second mounting seat 601; the second sliding rail 6031 extends along the second direction, and the second sliding block 6032 is slidably connected to the second sliding rail 6031. So set up, ensure through first guide structure 503 that first mount pad 501 slides along first direction under the drive of first drive arrangement 502, ensure through second guide structure 603 that second mount pad 601 slides along the second direction under the drive of second drive arrangement 602, simple structure practicality is strong.

The embodiment also discloses a laser welding machine, referring to fig. 4-8, which comprises a base plate 7, wherein two clamping and adjusting mechanisms 8, a laser heat source mechanism 9, a side imaging mechanism 10 and the end face imaging mechanism 1 in the embodiment are arranged on the base plate 7; wherein two clamping and adjusting mechanisms 8 are respectively positioned at two opposite sides of the substrate 7, and the laser heat source mechanism 9, the side imaging mechanism 10 and the end face imaging mechanism 1 are positioned between the two clamping and adjusting mechanisms 8. Because the laser welding machine adopts all the technical schemes of all the embodiments, the laser welding machine at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.

As a preferable aspect of the above embodiment, referring to fig. 5, the clamp adjusting mechanism 8 includes a clamp portion 801 and a six-dimensional adjusting portion 802 that are connected; the clamping portion 801 is used for clamping the first optical fiber or the second optical fiber, and the six-dimensional adjusting portion 802 is used for performing displacement adjustment and rotation angle adjustment of the X axis/Y axis/Z axis of the clamping portion 801. In this way, after the first optical fiber/second optical fiber is clamped by the clamping portion 801, the data of the side imaging mechanism 108 and the end face imaging mechanism 11 are combined, and then the six-dimensional adjustment portion 802 is used to perform six-dimensional adjustment on the clamping portion 801, that is, displacement adjustment and rotation angle adjustment along the X axis/Y axis/Z axis, so that the first optical fiber/second optical fiber are aligned with each other. Six-dimensional adjustment portion 802 may be generally described as being formed by six parts of an X-axis moving device, a Y-axis moving device, a Z-axis moving device, an X-axis rotating device, a Y-axis rotating device, and a Z-axis rotating device; since the six-dimensional adjusting part 802 belongs to the prior art, the present application will not be described in detail;

Further, a light source 803 is provided in the grip portion 801. So set up, after clamping part 801 carries out the centre gripping to first optic fibre/second optic fibre, light source 803 can paste the surface of tight first optic fibre/second optic fibre, the cladding of light source 803 at this moment is passed through to the partial light of light source 803 to transmit to its terminal surface along the fiber core of first optic fibre/second optic fibre, thereby furthest lighten the terminal surface of first optic fibre/second optic fibre, and then improve the clear brightness of first terminal surface image and second terminal surface image, the follow-up operating personnel of being convenient for is to first terminal surface image and second terminal surface image contrast observation.

As a preferable mode of the above-described embodiment, referring to fig. 6, the laser heat source mechanism 9 includes a laser generator 901 and a multiplexing beam dividing device 902, and the multiplexing beam dividing device 902 includes a plurality of laser single beams for dividing the laser beam generated by the laser generator 901 into four laser single beams distributed in a circular shape at equal intervals with respect to the welding center. So set up, after the laser beam that produces laser generator 901 passes through a series of reflection and beam split through multichannel beam split device 902, form four laser singles that just power is equal for the equidistant annular distribution in welding center to guarantee the thermal field homogeneity in welding center that first optic fibre and second optic fibre terminal surface are located, and then improve the welding quality of first optic fibre and second optic fibre.

Specifically, referring to fig. 7, the multi-beam splitter 902 includes a first high-reflection mirror 9021, a second high-reflection mirror 9022, a third high-reflection mirror 9023, a fourth high-reflection mirror 9024, a fifth high-reflection mirror 9025, a sixth high-reflection mirror 9026, a seventh high-reflection mirror 9030, a first beam splitter 9027, a second beam splitter 9028, and a third beam splitter 9029, wherein the first beam splitter 9027, the second beam splitter 9028, and the third beam splitter 9029 are beam splitters with a reflection/transmission ratio of 50:50. The operation principle of the demultiplexing device 902 is: the laser beam is reflected by the seventh high reflecting mirror 9030 and enters the first beam splitter 9027, and the reflected light of the first beam splitter 9027 enters the first high reflecting mirror 9021; the reflected light of the first high reflection mirror 9021 is incident on the second beam splitter 9028; the reflected light of the second beam splitter 9028 is incident on the second high reflection mirror 9022, and the reflected light of the second high reflection mirror 9022 is incident on the fusion center; the transmitted light of the second beam splitter 9028 is incident on the third high reflecting mirror 9023; the reflected light of the third high reflection mirror 9023 is incident to the fusion center; the transmitted light of the first beam splitter 9027 is incident on the fourth high reflection mirror 9024, the reflected light of the fourth high reflection mirror 9024 is incident on the third beam splitter 9029, the reflected light of the third beam splitter 9029 is incident on the fifth high reflection mirror 9025, and the reflected light of the fifth high reflection mirror 9025 is incident on the fusion center; the transmitted light of the third beam splitter 9029 is incident on the sixth high reflecting mirror 9026, and the reflected light of the sixth high reflecting mirror 9026 is incident on the fusion center.

As a preferred embodiment of the foregoing embodiment, referring to fig. 8, the side imaging mechanism 10 includes a first side imaging assembly 1001 and a second side imaging assembly 1002, where the first side imaging assembly 1001 is configured to acquire first side images of first optical fibers and first radial directions of second optical fibers, and the second side imaging assembly 1002 is configured to acquire second side images of second radial directions of the first optical fibers and the second optical fibers, and the first radial directions are perpendicular to the second radial directions. So configured, by the mating of the first side imaging assembly 1001 and the second side imaging assembly 1002, a first radial and second radial relative alignment of the first optical fiber and the second optical fiber is ensured. In this embodiment, the first radial direction is set to be the Y-axis direction, and the second radial direction is set to be the Z-axis direction. The first side imaging assembly 1001 and the second side imaging assembly 1002 have the same structure, and each include a second imaging camera 10011 and a backlight, and the backlight is used to provide a backlight 10012, so that the second imaging camera 10011 performs side imaging on the first optical fiber and the second optical fiber. Since the first side imaging assembly 1001 and the second side imaging assembly 1002 are related art, detailed descriptions thereof are omitted.

The working procedure of the laser welding machine is described in detail below with reference to the above embodiments:

Step ①: the first optical fiber and the second optical fiber are respectively clamped and fixed on two clamping and adjusting mechanisms 8; the first optical fiber and the second optical fiber are simultaneously present in the imaging region of the side imaging mechanism 10 at this time;

Step ②: the first side imaging component 1001 and the second side imaging component 1002 of the side imaging mechanism 10 are used for respectively carrying out imaging processing on the first radial direction and the second radial direction of the first optical fiber and the second optical fiber, and recognizing the current postures of the first optical fiber and the second optical fiber through computer software according to the side imaging processing results and controlling the six-dimensional adjusting part 802 to adjust the displacement of the clamping part 801 so as to align the first radial direction and the second radial direction of the first optical fiber and the second optical fiber, namely, the first optical fiber and the second optical fiber are coaxially aligned at the moment;

Step ③: the six-dimensional adjusting section 802 drives the first optical fiber and the second optical fiber away from each other in the axial direction thereof on the basis of maintaining the first radial direction and the second radial direction thereof; then the moving component 4 drives the optical component 2 to move between the first optical fiber and the second optical fiber, the imaging component 3 is utilized to perform end face imaging processing on the first optical fiber and the second optical fiber, the current pose of the first optical fiber and the current pose of the second optical fiber are recognized through computer software according to the end face imaging processing results, and the six-dimensional adjusting part 802 is controlled to adjust the clamping part 801 to rotate so as to align the end faces of the first optical fiber and the second optical fiber, namely the stress areas of the first optical fiber and the second optical fiber are mutually aligned at the moment;

Step ④; the optical assembly 2 moves to reset under the driving action of the moving assembly 4, the first optical fiber and the second optical fiber are driven by the clamping and adjusting mechanism 8 to move to the welding center point of the laser heat source mechanism 9 along the axial direction on the basis of keeping the posture at the moment, and the first optical fiber and the second optical fiber are welded by utilizing heat generated by single-beam heating of four laser beams.

It should be noted that, other contents of the end face imaging mechanism and the laser welding machine disclosed in the present utility model are related art, and are not described herein again.

The foregoing is merely an alternative embodiment of the present utility model, and is not intended to limit the scope of the present utility model, and all applications of the present utility model directly/indirectly in other related technical fields are included in the scope of the present utility model.

Claims (10)

1. An end face imaging mechanism is applied to a laser welding machine; characterized by comprising the following steps:

The optical assembly is provided with a first light inlet surface, a second light inlet surface and a light outlet surface, wherein the first light inlet surface and the second light inlet surface are oppositely arranged; the first light inlet surface is used for receiving a first end surface image of the first optical fiber, and the second light inlet surface is used for receiving a second end surface image of the second optical fiber; the optical assembly comprises a reflecting mirror and a spectroscope, the spectroscope comprises a transmission surface and a reflecting surface, and the reflecting surface is used for reflecting the first end surface image from the first light inlet surface to the light outlet surface; the reflecting mirror is used for reflecting the second end face image from the second light inlet face to the transmission face and transmitting the second end face image to the light outlet face through the transmission face;

The imaging component is arranged in the projection direction of the light-emitting surface and is used for carrying out imaging processing on the first end face image and the second end face image;

And the moving assembly is used for driving the optical assembly to move between the first optical fiber and the second optical fiber so that the first light inlet surface is aligned with the first optical fiber and the second light inlet surface is aligned with the second optical fiber.

2. The end face imaging mechanism of claim 1, wherein: the reflector and the spectroscope are arranged at an included angle of 90 degrees, the first light inlet surface and the second light inlet surface are arranged vertically, and the light outlet surface is arranged horizontally.

3. The end face imaging mechanism of claim 1, wherein: the imaging assembly is interconnected with the optical assembly, the imaging assembly including a first imaging camera.

4. The end face imaging mechanism of claim 1, wherein: the moving assembly comprises a first moving module and a second moving module, the optical assembly is arranged on the first moving module, the first moving module is arranged on the second moving module, and the second moving module is fixedly connected with the laser welding machine; the first moving module is used for driving the optical assembly to slide along a first direction, and the second moving module is used for driving the first moving module to slide along a second direction, wherein the first direction and the second direction are mutually perpendicular.

5. The end face imaging mechanism of claim 4, wherein:

The first mobile module comprises a first mounting seat and a first driving device; the first mounting seat is used for mounting the optical component, and the first driving device is used for driving the first mounting seat to slide along a first direction; the first driving device comprises a first rotating motor and a first screw rod, the first screw rod is arranged in an extending mode along a first direction, the driving end of the first rotating motor is connected with the first screw rod, and the first screw rod is in transmission connection with the first mounting seat screw rod;

and/or the second mobile module comprises a second mounting seat and a second driving device; the second mounting seat is used for mounting the first driving device, and the second driving device is used for driving the second mounting seat to slide along a second direction; the second driving device comprises a second rotating motor and a second screw rod, the second screw rod extends along a second direction, the driving end of the second rotating motor is connected with the second screw rod, and the second screw rod is in transmission connection with the second mounting seat screw rod.

6. The end face imaging mechanism of claim 5, wherein:

The first mobile module further comprises a first guide structure, wherein the first guide structure comprises a first sliding rail arranged on the second mounting seat and a first sliding block arranged on the first mounting seat; the first sliding rail is arranged in an extending mode along a first direction, and the first sliding block is connected with the first sliding rail in a sliding mode;

And/or the second moving module further comprises a second guiding structure, wherein the second guiding structure comprises a second sliding rail arranged on the laser welding machine and a second sliding block arranged on the second mounting seat; the second sliding rail extends along a second direction, and the second sliding block is in sliding connection with the second sliding rail.

7. A laser fusion splicer, characterized in that: comprising a substrate provided with two clamping adjustment mechanisms, a laser heat source mechanism, a side imaging mechanism and an end surface imaging mechanism according to any one of claims 1-6; the two clamping and adjusting mechanisms are respectively positioned on two opposite sides of the substrate, and the laser heat source mechanism, the side imaging mechanism and the end face imaging mechanism are positioned between the two clamping and adjusting mechanisms.

8. The laser fusion machine of claim 7, wherein: the clamping and adjusting mechanism comprises a clamping part and a six-dimensional adjusting part which are connected; the clamping part is used for clamping the first optical fiber or the second optical fiber, and the six-dimensional adjusting part is used for adjusting displacement of the X axis/Y axis/Z axis and adjusting rotation angle of the clamping part.

9. The laser fusion machine of claim 7, wherein: the laser heat source mechanism comprises a laser generator and a multi-path light splitting device, wherein the multi-path light splitting device comprises a plurality of laser single beams which are used for splitting laser beams generated by the laser generator into four laser beams which are distributed in an annular mode at equal distance relative to a welding center.

10. The laser fusion machine of claim 7, wherein: the side imaging mechanism comprises a first side imaging assembly and a second side imaging assembly, wherein the first side imaging assembly is used for acquiring first radial first side images of the first optical fiber and the second optical fiber, and the second side imaging assembly is used for acquiring second radial second side images of the first optical fiber and the second optical fiber, and the first radial direction and the second radial direction are mutually perpendicular.