CN216576062U

CN216576062U - Laser welding head integrated with vibrating mirror group

Info

Publication number: CN216576062U
Application number: CN202123289482.1U
Authority: CN
Inventors: 石中; 史少锦
Original assignee: Shenzhen Ospri Intelligent Technology Co ltd
Current assignee: Shenzhen Ospri Intelligent Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-05-24
Anticipated expiration: 2031-12-24

Abstract

The application discloses a laser welding head integrated with a vibrating mirror group, which comprises a support, wherein a collimating mirror group, a beam combining mirror, the vibrating mirror group and a field lens are arranged on the support; the collimating lens group is used for converting the divergent laser into parallel light and transmitting the parallel laser to the beam combining lens, and the beam combining lens is used for transmitting the parallel light to the vibrating lens group; the field lens is used for receiving the parallel light reflected by the beam-combining lens group and focusing the parallel light into a point to be emitted to a welding point; mirror group shakes is including mirror and actuating mechanism shake, actuating mechanism is used for the drive the mirror that shakes rotates, actuating mechanism respectively with the mirror that shakes with support piece connects. The laser welding head can be suitable for welding processing with multiple welding spots and large breadth, parts to be welded do not need to be repeatedly disassembled and assembled in the welding process, welding processing efficiency is improved, and labor intensity of operators is reduced.

Description

Laser welding head integrated with vibration lens group

Technical Field

The utility model relates to a laser welding equipment field, more specifically relates to a laser welder head of integrated group that shakes.

Background

Laser welding is an efficient precision welding process that combines two or more components together using a high energy density laser beam as a heat source.

The current common laser welding equipment adopts the following working mode: the method comprises the steps of fixing a part to be welded on a welding platform, enabling laser emitted by a laser head to irradiate the welding platform, moving the welding platform in an automatic or manual mode according to welding requirements, enabling a welding area of the part to be welded to be aligned with a laser irradiation area, and achieving welding.

The welding equipment is limited by the structural size of the welding platform, and the welding working breadth is smaller; if the number of welding points of a part to be welded is large and the distance between every two welding points is large, a worker is often required to repeatedly disassemble and assemble the welding part from the welding platform for many times so as to adjust the positions of different welding points on the welding platform, so that the welding points with large distances can be welded by laser irradiation; by the mode, the labor intensity of workers is increased, and the processing efficiency of welding equipment is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the application provides a laser welding head integrated with a vibrating mirror group, which comprises a support member, wherein a collimating mirror group, a beam combining mirror, the vibrating mirror group and a field lens are arranged on the support member; the collimating lens group is used for converting the divergent laser into parallel light and transmitting the parallel laser to the beam combining lens, and the beam combining lens is used for transmitting the parallel light to the vibrating lens group; the field lens is used for receiving the parallel light reflected by the beam-combining lens group and focusing the parallel light into a point to be emitted to a welding point; mirror group shakes is including mirror and actuating mechanism shake, actuating mechanism is used for the drive the mirror that shakes rotates, actuating mechanism respectively with the mirror that shakes with support piece connects.

In order to further improve the present application, the galvanometer includes a first reflecting mirror and a second reflecting mirror, the second reflecting mirror is configured to reflect the parallel light reflected by the beam combiner to the first reflecting mirror, and the first reflecting mirror is configured to reflect the parallel light reflected by the second reflecting mirror to the field lens; the driving mechanism comprises a first motor and a second motor, the first motor is connected with the first reflector, the second motor is connected with the second reflector, the first motor and the second motor are respectively connected with the supporting piece, and a driving shaft of the first motor and a driving shaft of the second motor are not on the same plane.

In a further development of the application, the drive shaft of the first motor is parallel to the horizontal plane, and the drive shaft extension line of the second motor intersects the horizontal plane.

For the further improvement of this application, the contained angle of beam combining mirror and horizontal plane is 45, collimating mirror group sets up directly over beam combining mirror.

For the further improvement of this application, be equipped with CCD visual component on the support piece, CCD visual component includes camera and mounting bracket, the camera respectively with the mounting bracket with support piece connects, the mounting bracket with support piece's junction is equipped with the through-hole, be equipped with the third speculum on the mounting bracket, the third speculum the through-hole with the same straight line setting of beam combining mirror three.

For the further improvement of this application, the shooting direction of camera is perpendicular with the horizontal direction, the contained angle of third speculum and horizontal plane is 45.

For the further improvement of this application, be equipped with lens protection device on the support piece, lens protection device sets up the below of field lens, lens protection device includes support and subassembly of blowing, the support with the support piece is connected, the subassembly of blowing with leg joint.

For the further improvement of this application, the subassembly of blowing includes wind knife rest and bottom plate, the wind knife rest with leg joint, be equipped with air inlet joint on the wind knife rest, the bottom plate with the lower terminal surface of wind knife rest is connected, the wind knife rest with the junction of bottom plate is equipped with the air outlet, the air outlet is located the wind knife rest is close to one side of scene.

For the further improvement of this application, the lower terminal surface of wind knife rest is equipped with and holds the wind groove, the air inlet joint with the air outlet respectively with hold the wind groove intercommunication.

The further improvement of this application, the air outlet is for setting up rectangular groove on the air knife rest, rectangular groove with the bottom plate meets.

Compared with the prior art, this application installs the group of shaking mirror on support piece, and the actuating mechanism who shakes the group of mirror can drive the mirror rotation that shakes to change the angle of shining of laser, make angle and the position that laser shines on the field lens change, shine welding platform after the field lens focus position also can corresponding change, thereby play the purpose that changes the laser welding point. The laser welding head can be suitable for welding processing with multiple welding spots and large breadth, parts to be welded do not need to be repeatedly disassembled and assembled in the welding process, welding processing efficiency is improved, and labor intensity of operators is reduced.

Drawings

In order to illustrate the present application or prior art more clearly, a brief description of the drawings needed for the description of the embodiments or prior art will be given below, it being clear that the drawings in the following description are some embodiments of the present application and that other drawings can be derived from them by a person skilled in the art without inventive effort.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic top view of an embodiment of the present application;

FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 2;

FIG. 4 is a structural schematic diagram of the embodiment of the present application with the support removed;

fig. 5 is an exploded view of the lens protection device in the embodiment of the present application.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1-5, a laser welding head integrated with a vibrating lens group comprises a support 1, a collimating lens group 2, a beam combining lens 3, a vibrating lens group 4 and a field lens 5 are arranged on the support 1, and the support 1 is a metal main body shell and is used as a main body of the laser welding head for limiting and mounting other components and mechanisms.

The collimating lens group 2 is arranged above the supporting member 1, the collimating lens group 2 comprises a plurality of collimating lens 21 and collimating lens frames 22, and each collimating lens 21 is connected with the collimating lens frame 22 in a drawer type manner, so that the collimating lens 21 is convenient to replace; the alignment lens frame 22 is fixedly connected with the support member 1 through screws, and a section of the alignment lens frame 22, which is far away from the support member 1, is connected with a laser head of a welding machine. When the laser head works, divergent laser emitted by the laser head irradiates the knife collimating lens group 2, is refracted by each collimating lens 21 and then is converted into parallel light, and then irradiates the knife beam combining lens 3. The beam combining mirror 3 is fixedly arranged right below the collimating mirror group 2 and used for reflecting the parallel light emitted by the collimating mirror group 2 to the vibrating mirror group 4.

The vibrating mirror group 4 is arranged in the reflection direction of the beam combining mirror 3, and the vibrating mirror group 4 is used for reflecting the parallel light reflected by the beam combining mirror 3 to the field lens 5; the field lens 5 is installed below the vibrating lens group 4, and the field lens 5 is used for receiving the parallel light reflected by the vibrating lens group 4 and focusing the parallel light into a point to be emitted to a welding point on the welding platform to complete welding.

The vibrating mirror group 4 comprises a vibrating mirror and a driving mechanism, the driving mechanism is used for driving the vibrating mirror to rotate, and the driving mechanism is respectively fixedly connected with the vibrating mirror and the supporting piece 1. In this embodiment, the number of the galvanometers is two, and the galvanometers include a first reflecting mirror 41 and a second reflecting mirror 42, the second reflecting mirror 42 is used for reflecting the parallel light reflected by the beam combiner 3 to the first reflecting mirror 41, and the first reflecting mirror 41 is used for reflecting the parallel light reflected by the second reflecting mirror 42 to the field mirror 5; in other embodiments, the number of galvanometers may be any other number. The driving mechanism comprises a first motor 43 and a second motor 44, the first motor 43 and the second motor 44 are respectively and fixedly arranged on the supporting member 1, the driving shaft of the first motor 43 is fixedly connected with the first reflector 41, and the driving shaft of the second motor 44 is fixedly connected with the second reflector 42.

When the laser welding head works, divergent light emitted by a laser head is converted into parallel light by the collimating lens group 2 to irradiate the beam combining lens 3, the beam combining lens 3 reflects the parallel light to the second reflecting mirror 42, the second reflecting mirror 42 reflects the parallel light to the first reflecting mirror 41, the first reflecting mirror 41 reflects the parallel light to the field lens 5, and the field lens 5 focuses the parallel light into a point and emits the point to a welding point, so that welding is completed.

When the position of the welding point needs to be changed, the first motor 43 and/or the second motor 44 work to drive the first reflecting mirror 41 and/or the second reflecting mirror 42 to rotate, so that the reflecting angle of the first reflecting mirror 41 and/or the second reflecting mirror 42 is changed, the angle and the position of parallel light irradiated on the field lens 5 are changed, the position of the parallel light irradiated on the welding platform after being focused by the field lens 5 is also correspondingly changed, and the purpose of changing the welding point is achieved.

In order to enlarge the welding width of the laser welding head and simultaneously avoid the enlargement of the volume of the laser welding head, the central axis of the driving shaft of the first motor 43 and the central axis of the driving shaft of the second motor 44 are arranged on different planes; preferably, the driving shaft of the first motor 43 is parallel to the horizontal plane, and the extension line of the driving shaft of the second motor 44 intersects the horizontal plane. Due to the non-coplanar design of the driving shafts of the first motor 43 and the second motor 44, the whole volume of the laser welding head can be greatly reduced.

Be equipped with CCD vision subassembly 6 on support piece 1, CCD vision subassembly 6 includes camera 61 and mounting bracket 62, camera 61 respectively with

mounting bracket

62 and 1 fixed connection of support piece, mounting bracket 62 passes through screwed connection with support piece 1, mounting bracket 62 is equipped with through-hole 63 with support piece 4's junction, is equipped with third speculum 64 on the mounting bracket 62, and third speculum 64, through-hole 63 and the same straight line setting of 3 three of beam combiner.

When the laser welding head works, visible blue light or red light is arranged on the welding platform and used for illuminating a welding area, and light rays of the welding area penetrate through the field lens 5 and then are reflected by the first reflecting mirror 41 and the second reflecting mirror 42 to irradiate on the beam combining mirror 3; the surface of the beam combining mirror 3 is provided with a film having light transmittance of blue light and red light, so that the blue light or the red light irradiated on the beam combining mirror 3 passes through the beam combining mirror 3 and then through the through hole 63 to the third reflector 64, and the third reflector 64 reflects the light to the camera 61, so that the camera 61 captures an image of a welding area.

The welding quality can be monitored by arranging the camera 61, so that an operator can conveniently observe the welding condition in real time, and can make corresponding adjustment, modification and the like when necessary.

In order to reduce the whole volume of the laser welding head as much as possible, the beam combiner 3 is limited in the support part 1, and the included angle between the beam combiner 3 and the horizontal plane is 45 degrees; the shooting direction of the camera 61 is installed to be perpendicular to the horizontal direction, and the angle between the third reflecting mirror 64 and the horizontal plane is limited to 45 °.

The support piece 1 is provided with a lens protection device 7, and the lens protection device 7 is arranged below the field lens 5; the lens protection device 7 is used for protecting various lenses in the laser welding head and preventing spatters generated by welding from entering the laser welding head. The lens protection device 7 comprises a bracket 71 and a blowing assembly, wherein the bracket 71 is fixedly connected with the support 1 through screws, and the blowing assembly is connected with the bracket 71 in an adjustable limiting manner. The bracket 71 is used for supporting the blowing assembly, the blowing assembly and the bracket 71 can be adjusted, the distance between the blowing assembly and the field lens 5 can be conveniently adjusted, and therefore the laser welding head is suitable for different working scenes, and the blowing assembly is used for driving away dust or splashes which may enter the laser welding head.

The blowing assembly comprises an air knife rest 72 and a bottom plate 73, the air knife rest 72 is in adjustable limit connection with the support 71, an air inlet joint 74 is arranged on the air knife rest 72, and the air inlet joint 74 is connected with an external air source; the bottom plate 73 is connected with the lower end face of the air knife rest 72, an air outlet 75 is formed in the connection position of the air knife rest 72 and the bottom plate 73, and the air outlet 75 is located on one side, close to the field lens 5, of the air knife rest 72. In this embodiment, the air outlet 75 is a long groove disposed on the lower end surface of the air knife holder 72, and the long groove is connected to the bottom plate 73. The elongated air outlet 75 can increase the protection area of the lens protection device, and the coverage area of the air outlet 75 is the protection area of the lens protection device; meanwhile, the air pressure blown out by the air blowing assembly can be improved.

In order to further increase the pressure of the air blown out by the blowing assembly, an air storage groove 76 is provided on the lower end surface of the air knife rest 72, and the air inlet joint 74 and the air outlet 75 are respectively communicated with the air storage groove 76.

The working principle of the lens protection device is as follows: the air inlet joint 74 is connected with an external air source, external air enters the air knife rest 72 from the air inlet joint 74, the air storage groove 76 is filled with the external air, and the external air is extruded into the air outlet 75 after certain air pressure is generated in the air storage groove 76; the strip-shaped air outlet 75 blows air towards the field lens 5, so that a high-speed airflow is generated below the field lens 5, and dust or splashes possibly entering the field lens 5 can be blown away.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims

1. A laser welding head integrated with a vibrating mirror group is characterized by comprising a support member, wherein a collimating mirror group, a beam combining mirror, the vibrating mirror group and a field lens are arranged on the support member;

the collimating lens group is used for converting the divergent laser into parallel light and transmitting the parallel laser to the beam combining lens, and the beam combining lens is used for transmitting the parallel light to the vibrating lens group;

the field lens is used for receiving the parallel light reflected by the beam-combining lens group and focusing the parallel light into a point to be emitted to a welding point;

mirror group shakes is including mirror and actuating mechanism shake, actuating mechanism is used for the drive the mirror that shakes rotates, actuating mechanism respectively with the mirror that shakes with support piece connects.

2. The laser welding head of claim 1 wherein said galvanometer includes a first mirror and a second mirror, said second mirror for reflecting the collimated light reflected from said beam combiner to said first mirror, said first mirror for reflecting the collimated light reflected from said second mirror to said field mirror;

the driving mechanism comprises a first motor and a second motor, the first motor is connected with the first reflector, the second motor is connected with the second reflector, the first motor and the second motor are respectively connected with the supporting piece, and a driving shaft of the first motor and a driving shaft of the second motor are not on the same plane.

3. The laser welding head integrated with a galvanometer group of claim 2 wherein the drive axis of the first motor is parallel to the horizontal plane and the extension of the drive axis of the second motor intersects the horizontal plane.

4. The laser welding head integrated with a set of mirrors according to claim 1 wherein the angle between the beam combiner and the horizontal plane is 45 °, and the set of collimators is disposed directly above the beam combiner.

5. The laser welding head of any one of claims 1 to 4, wherein a CCD vision assembly is disposed on the support, the CCD vision assembly comprises a camera and a mounting frame, the camera is connected to the mounting frame and the support, the mounting frame is connected to the support, a through hole is disposed at a joint of the mounting frame and the support, a third reflector is disposed on the mounting frame, and the third reflector, the through hole and the beam combiner are disposed in a straight line.

6. The laser welding head with integrated lens group of claim 5 wherein the shooting direction of said camera is perpendicular to the horizontal and the angle of said third mirror is 45 ° to the horizontal.

7. The laser welding head with integrated vibrating mirror group as claimed in any one of claims 1 to 4, wherein a lens protector is provided on the support, the lens protector is provided below the field lens, the lens protector comprises a bracket and a blowing assembly, the bracket is connected with the support, and the blowing assembly is connected with the bracket.

8. The laser welding head of claim 7 wherein the blowing assembly comprises a wind knife holder and a bottom plate, the wind knife holder is connected to the support, the wind knife holder is provided with an air inlet joint, the bottom plate is connected to the lower end surface of the wind knife holder, an air outlet is provided at the connection position of the wind knife holder and the bottom plate, and the air outlet is located on the side of the wind knife holder close to the field lens.

9. The laser welding head with the integrated vibrating mirror group as claimed in claim 8, wherein the lower end surface of the air knife rest is provided with an air storage groove, and the air inlet joint and the air outlet are respectively communicated with the air storage groove.

10. The laser welding head with the integrated vibration mirror group as claimed in claim 9, wherein said air outlet is a long groove disposed on said air knife holder, and said long groove is connected to said bottom plate.