CN118455738B - Double-light-path composite laser welding equipment and processing method thereof - Google Patents

Abstract

The invention discloses a double-light path composite laser welding device and a processing method thereof, wherein the double-light path composite laser welding device comprises a laser generating source, a first reflecting mirror and a second reflecting mirror which are sequentially arranged at intervals along a first direction; a welding position is arranged on one side of the first reflecting mirror along the second direction; the laser generating source is used for generating a laser main body emitted along a first direction; the first reflector is used for reflecting the laser body to form a first laser which is reflected on the welding position along the second direction; the first reflecting mirror is provided with light transmission and is also used for transmitting the laser main body so as to form second laser; the second reflecting mirror is used for reflecting the second laser and reflecting the second laser on the welding position at a first inclination angle; the double-light path composite laser welding equipment further comprises an electric welding source, wherein the electric welding source projects a heat affected zone on a welding position at a second inclination angle; the arrangement ensures the welding quality and reduces the extra investment of the laser source, so that the scheme can weld large-size workpieces with lower cost and higher welding precision.

Description

Double-light-path composite laser welding equipment and processing method thereof

Technical Field

The invention relates to the technical field of laser welding structures, in particular to double-light-path composite laser welding equipment and a processing method thereof.

Background

Laser welding is a technique for connecting materials by using a laser beam with high energy density as a heat source, and is widely applied to the fields of precision manufacturing, automobile industry, aerospace and the like because the laser beam used for laser welding has good power concentration, good directivity and high heating efficiency.

However, in practice, it is found that for a workpiece to be welded with a large thickness, due to the large size of the workpiece to be welded, heat is easily unevenly distributed, and a highly concentrated laser beam can cause local overheating of a welding seam and unstable shape of a molten pool of the workpiece due to the fact that heat is concentrated in a small area, so that welding quality is seriously affected. In the prior art, in order to solve the above-mentioned defects faced when the laser welding is applied to a large-sized workpiece, an improvement method of increasing the power and irradiation range of the laser, compounding other welding means, and the like may be adopted.

Only increasing the power and irradiation range of the laser source means purchasing a laser generator with higher cost, and the welding precision can be maintained, but the cost of the laser welding equipment is increased dramatically; the problem that heat is too concentrated can be overcome with lower cost by compounding other welding means, but other welding structures that are difficult to ensure to introduce can not cause the influence on the precision to original laser welding, lead to the welding precision of laser welding equipment to be unable to be ensured. Therefore, how to optimize the performance of laser welding when applied to large-sized workpieces is an important search for those skilled in the art.

Disclosure of Invention

The invention aims to provide double-light-path composite laser welding equipment and a processing method thereof, which solve the technical problems that the welding precision is high and the cost is low and cannot be realized simultaneously when the laser welding in the prior art is applied to a large-size workpiece.

To achieve the purpose, the invention adopts the following technical scheme:

A dual-light path compound laser welding device comprises a laser generating source, a first reflecting mirror and a second reflecting mirror which are sequentially arranged at intervals along a first direction; a welding position is arranged on one side of the first reflecting mirror along the second direction; the second direction is perpendicular to the first direction;

the laser generating source is used for generating a laser main body emitted along the first direction; the first reflector is used for reflecting the laser body to form a first laser which is reflected on the welding position along the second direction;

the first reflecting mirror is light-transmitting and is also used for transmitting the laser body so as to form second laser; the second reflecting mirror is used for reflecting the second laser and reflecting the second laser on the welding position at a first inclination angle;

the double-light-path composite laser welding equipment further comprises an electric welding source, wherein the electric welding source projects a heat affected zone on the welding position at a second inclination angle;

the electric welding source is arranged on one side, far away from the first laser, of the second laser, and the second inclination angle is larger than the first inclination angle.

Optionally, the laser beam generating device further comprises a diffusion mirror, wherein the diffusion mirror is arranged on a light path of the second laser beam after being reflected and is used for diffusing the second laser beam.

Optionally, the device further comprises a first rotating device and a first mirror carrier, and the second reflecting mirror is mounted on the first mirror carrier; the rotating end of the first rotating device is fixedly connected with the first mirror carrier and used for changing the first inclination angle.

Optionally, the optical system further comprises a second rotating device and a second mirror carrier, wherein the diffusion mirror is mounted on the second mirror carrier; the second mirror carrier is rotatably connected to the rotating end of the second rotating device; the rotating end of the second rotating device is used for driving the diffusion mirror to rotate around the second reflecting mirror;

The device further comprises a diffusion angle adjusting assembly, wherein the rotating end of the diffusion angle adjusting assembly is fixedly connected with the second mirror carrier, and the rotating end of the diffusion angle adjusting assembly and the rotating end of the second rotating device are coaxially arranged.

Optionally, a first shaft extends from one side of the first mirror carrier, and a second shaft extends from the other side of the first mirror carrier, and the second shaft is coaxially arranged with the first shaft;

a third shaft extends from one side of the second mirror carrier, and a fourth shaft extends from the other side of the second mirror carrier;

A first connecting rod is connected between the first shaft and the third shaft, one end part of the first connecting rod is rotatably connected to the first shaft, and the other end part of the first connecting rod is rotatably connected to the third shaft;

A second connecting rod is connected between the second shaft and the fourth shaft, one end part of the second connecting rod is rotatably connected to the second shaft, and the other end part of the second connecting rod is rotatably connected to the fourth shaft;

The rotating end of the first rotating device is fixedly connected with the first shaft or the second shaft, and the rotating end of the second rotating device is fixedly connected with one end of the first connecting rod or one end of the second connecting rod.

Optionally, the first rotation means is located on one side of the first mirror carrier and the second rotation means is located on the other side of the first mirror carrier;

The rotating end of the first rotating device is fixedly connected with the first shaft, and the rotating end of the second rotating device is fixedly connected with one end part of the second connecting rod; or alternatively

The rotating end of the first rotating device is fixedly connected with the second shaft, and the rotating end of the second rotating device is fixedly connected with one end part of the first connecting rod.

Optionally, the first rotating device comprises a first mounting seat and a first motor mounted in the first mounting seat, and a rotating shaft of the first motor is fixedly connected with the first shaft through a coupling;

The second rotating device comprises a second mounting seat and a second motor arranged in the second mounting seat, and the second motor is provided with an annular inner stator part and an annular outer rotor part; the second shaft penetrates through the inner stator part to be connected with the second mounting seat in a rotating mode, the outer rotor part is fixedly connected with the second connecting rod through a connecting sleeve, and the connecting sleeve is sleeved outside the second shaft.

Optionally, the diffusion angle adjusting assembly includes a third motor, a first synchronizing wheel, a second synchronizing wheel, and a third synchronizing wheel;

The first synchronous wheel is arranged on a motor shaft of the third motor, the second synchronous wheel is arranged on the first shaft, and the third synchronous wheel is arranged on the third shaft; the first synchronous wheel and the second synchronous wheel are sleeved with a first synchronous belt, and the second synchronous wheel and the third synchronous wheel are sleeved with a second synchronous belt.

Optionally, the first direction is a horizontal direction, and the second direction is a vertical direction.

A processing method of a double-light-path composite laser welding device adopts the double-light-path composite laser welding device, comprising the following steps:

Planning a welding path;

Enabling the first laser to be projected to an initial welding position in the welding path along the second direction, and enabling the second laser to be projected to the initial welding position in the welding path at a first inclination angle;

enabling the electric welding source to project at a second inclination angle to an initial welding position in the welding path;

and controlling the electric welding source, the second laser and the first laser to move along a welding path.

Compared with the prior art, the invention has the following beneficial effects:

According to the double-light-path composite laser welding equipment and the processing method thereof, the heat affected zone is projected on the welding position through the electric welding source, the welding position of the workpiece is preheated by the heat affected zone, the workpiece is welded in the second direction by the first laser, meanwhile, the transition area is formed between the first laser and the heat affected zone by the second laser acting between the first laser and the heat affected zone, and on one hand, part of the second laser interacts with the first laser, so that a molten pool formed on the welding position is more uniform, the fluidity of molten pool metal is promoted to be increased, and crystal grains of the molten pool are more refined; on the other hand, part of the second laser can reduce the influence of the electric welding source on the first laser, so that the welding precision is improved; it can be seen that the above arrangement ensures the welding quality while reducing the additional investment of the laser source and controlling the overall cost. Therefore, the double-light-path composite laser welding equipment and the processing method thereof can weld large-size workpieces with lower cost and higher welding precision.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the invention, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the invention, without affecting the effect or achievement of the objective.

FIG. 1 is a schematic diagram of the overall structure of a dual-optical-path composite laser welding device according to an embodiment of the present invention;

FIG. 2 is a first partial schematic diagram of a dual-optical-path hybrid laser welding apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic front view of a dual-optical-path composite laser welding apparatus according to an embodiment of the present invention;

FIG. 4 is a second schematic diagram of a dual-optical-path hybrid laser welding apparatus according to an embodiment of the present invention;

FIG. 5 is a third schematic diagram of a dual-optical-path hybrid laser welding apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic view of the structure of FIG. 5 at A in a partially enlarged manner;

fig. 7 is a schematic diagram of a dual-optical-path composite laser welding device according to an embodiment of the present invention;

illustration of: 001. a welding position; 002. a first laser; 003. a second laser; 004. diffusing the laser; 005. a heat affected zone;

100. a laser light generating source; 200. a first mirror; 300. a second mirror; 400. an electric welding source; 500. a diffusing mirror;

610. a first rotating device; 611. a first mount; 612. a first motor; 613. a coupling; 620. a first mirror carrier;

710. A second rotating device; 711. a second mounting base; 712. a second motor; 713. a connecting sleeve; 720. a second mirror carrier; 721. a third shaft; 722. a fourth shaft; 730. a first connecting rod; 740. a second connecting rod;

800. a diffusion angle adjusting assembly; 810. a third motor; 820. a second synchronizing wheel; 830. a third synchronizing wheel; 840. a first synchronization belt; 850. a second timing belt; 900. a frame.

Detailed Description

In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

Embodiment one:

the dual-optical-path composite laser welding equipment provided by the embodiment is mainly applied to a scene of welding large-size targets such as large-size workpieces and thick plates, and the welding quality of the large-size workpieces can be guaranteed at lower cost by optimizing the structure of the dual-optical-path composite laser welding equipment.

As shown in fig. 1,2 and 7, a dual-optical-path composite laser welding apparatus in the present embodiment includes a laser generating source 100, a first reflecting mirror 200 and a second reflecting mirror 300 sequentially arranged at intervals along a first direction; one side of the first reflecting mirror 200 along the second direction is provided with a welding position 001, and the welding position 001 is positioned on the workpiece; the second direction is perpendicular to the first direction; in this embodiment, the first direction is a horizontal direction, and the second direction is a vertical direction.

The laser light generation source 100 is used for generating a laser light main body emitted along a first direction; the first mirror 200 is used for reflecting the laser light body to form a first laser light 002 reflected on the welding position 001 in the second direction. The first reflecting mirror 200 has light transmittance and is also used for transmitting the laser body to form a second laser 003; the second reflector 300 is used for reflecting the second laser 003 and reflecting the second laser on the welding position 001 at a first inclination angle; the double-light path composite laser welding equipment further comprises an electric welding source 400, wherein the electric welding source 400 projects a heat affected zone 005 on a welding position 001 at a second inclination angle; the electric welding source 400 is disposed on a side of the second laser 003 away from the first laser 002, and the second inclination angle is greater than the first inclination angle. The above-mentioned inclination angle means an angle with the second direction, and the larger the inclination angle is, the closer to the horizontal direction is.

It should be noted that, the welding source 400 may be selected from welding modes such as argon tungsten-arc welding, plasma arc welding, and gas metal arc welding, which can preheat the welding position 001 of the workpiece, increase the initial temperature of the workpiece, and reduce thermal stress and cold cracks occurring in the welding process; meanwhile, the first laser 002 is used for focusing energy at a welding position 001 and is used for high-efficiency welding to form a main molten pool, and the second laser 003 is used for acting between the first laser 002 and a heat affected zone 005 to form a transition area, so that the molten pool shape is optimized; in this regard, the first reflecting mirror 200 may be a lens with light transmittance smaller than reflectivity, in addition to a half mirror, so that the power of the first laser 002 is larger than that of the second laser 003, thereby further optimizing the welding quality; for the transition area, part of the second laser 003 interacts with the first laser 002, so that a molten pool on the welding position 001 is more uniform, metal fluidity and grain refinement are promoted, and the other part of the second laser 003 covers the heat affected zone 005, so that the influence of a medium used by the electric welding source 400 on the penetration of the first laser 002 is reduced, and the interference of the electric welding source 400 on the first laser 002 is reduced, thereby improving welding precision.

Therefore, in the dual-optical-path composite laser welding apparatus in this embodiment, the heat affected zone 005 is projected on the welding position 001 by the electric welding source 400, the welding position 001 of the workpiece is preheated by the heat affected zone 005, the workpiece is welded in the second direction by the first laser 002, meanwhile, the second laser 003 acts between the first laser 002 and the heat affected zone 005, and a transition region is formed between the first laser 002 and the heat affected zone 005, and in this transition region, on one hand, part of the second laser 003 interacts with the first laser 002, so that a molten pool formed on the welding position 001 is more uniform, the fluidity of molten pool metal is promoted to be increased, and the crystal grains of the molten pool are more refined; on the other hand, the influence of the electric welding source 400 on the first laser 002 can be reduced by part of the second laser 003, so that the welding precision is improved; it can be seen that the above arrangement ensures the welding quality while reducing the additional investment of the laser source and controlling the overall cost. Therefore, the double-light-path composite laser welding equipment can weld large-size workpieces with lower cost and higher welding precision.

Further, the dual-optical-path composite laser welding apparatus further includes a diffusing mirror 500, where the diffusing mirror 500 is disposed on an optical path of the second laser 003 after being reflected, for diffusing the second laser 003. After the second laser 003 is diffused, the formed diffusion laser 004 acts between the first laser 002 and the heat affected zone 005, and a transition area is formed between the first laser 002 and the heat affected zone 005, so that heat distribution between the first laser 002 and the heat affected zone 005 is more uniform, a local overheating phenomenon is reduced, thermal stress generated in a welding process is reduced, and further risks of weld cracks and deformation are reduced; that is, the second laser 003 is uniformly projected between the first laser 002 and the heat affected zone 005 by the arrangement of the diffusion mirror 500, and the diffusion laser 004 is in a divergent shape, and the particles thereof are mutually coupled with the particles used by the welding source 400, so that the particles used by the welding source 400 are prevented from directly interfering with the first laser 002, and thus the influence of the welding source 400 on the first laser 002 can be further reduced.

On the basis of the above embodiment, the dual-optical-path composite laser welding apparatus further includes a first rotating device 610 and a first mirror carrier 620, and the second reflecting mirror 300 is mounted on the first mirror carrier 620; the rotating end of the first rotating means 610 is fixedly connected to the first mirror carrier 620 for changing the first tilting angle. The dual-optical path composite laser welding apparatus further includes a second rotating device 710 and a second mirror carrier 720, and the diffusion mirror 500 is mounted on the second mirror carrier 720; the second mirror carrier 720 is rotatably connected to the rotating end of the second rotating means 710 such that the second mirror carrier 720 rotates about the first mirror carrier 620; the dual-optical-path composite laser welding apparatus further includes a diffusion angle adjusting assembly 800, a rotating end of the diffusion angle adjusting assembly 800 being fixedly connected with the second mirror carrier 720, wherein the rotating end of the diffusion angle adjusting assembly 800 is coaxially disposed with the rotating end of the second rotating device 710.

It can be appreciated that the incidence angle of the laser beam can be flexibly adjusted according to the shape and size of the workpiece by changing the inclination angle of the first mirror carrier 620 through the first rotating means 610, thereby optimizing the welding effect; after the angle of the second reflecting mirror 300 is changed, the second mirror carrier 720 can be driven to rotate by the second rotating device 710, so that the geometric center of the second mirror carrier 720 is still penetrated by the second laser 003, that is, the rotating end of the second rotating device 710 is used for making the geometric center of the second mirror carrier 720 pass through the second laser 003, so as to ensure the position between the diffusing mirror 500 and the second reflecting mirror 300, further fine tune the angle of the diffusing mirror 500, finally change the diffusion range of the diffusing laser 004, and further optimize the quality of laser welding. Meanwhile, the rotation end of the diffusion angle adjusting assembly 800 and the rotation end of the second rotating device 710 are coaxially arranged, which means that the second rotating device 710 drives the second mirror carrier 720 to rotate, so that after the geometric center of the second mirror carrier 720 is penetrated by the second laser 003, the deflection angle of the second mirror carrier 720 (the angle between the optical axis of the second mirror carrier 720 and the second laser 003) can be adjusted by the diffusion angle adjusting assembly 800, so that the diffusion range can be changed, the incidence angle and the diffusion range of the laser beam can be accurately controlled, the heat distribution is more uniform, and the welding quality is further improved.

Specifically, as shown in fig. 4 to 6, one side of the first mirror carrier 620 is extended with a first shaft, and the other side of the first mirror carrier 620 is extended with a second shaft, which is coaxially disposed with the first shaft. A third axis 721 extends from one side of the second mirror carrier 720, and a fourth axis 722 extends from the other side of the second mirror carrier 720.

A first connecting rod 730 is connected between the first shaft and the third shaft 721, one end of the first connecting rod 730 is rotatably connected to the first shaft, and the other end of the first connecting rod 730 is rotatably connected to the third shaft 721; a second connecting rod 740 is connected between the second shaft and the fourth shaft 722, one end of the second connecting rod 740 is rotatably connected to the second shaft, the other end of the second connecting rod 740 is rotatably connected to the fourth shaft 722, the rotating end of the first rotating device 610 is fixedly connected to the first shaft or the second shaft, and the rotating end of the second rotating device 710 is fixedly connected to one end of the first connecting rod 730 or one end of the second connecting rod 740. It can be appreciated that the first rotating device 610 can rotate the first mirror carrier 620 to change the reflection angle of the second mirror 300, and the second rotating device 710 can rotate the second mirror carrier 720 through the above-mentioned connecting rod to rotate the diffusing mirror 500 around the second mirror 300.

As a specific embodiment, the first rotation means 610 is located at one side of the first mirror carrier 620 and the second rotation means 710 is located at the other side of the first mirror carrier 620; the rotating end of the first rotating device 610 is fixedly connected with the first shaft, and the rotating end of the second rotating device 710 is fixedly connected with one end of the second connecting rod 740. As another alternative embodiment, the rotating end of the first rotating device 610 is fixedly connected to the second shaft, and the rotating end of the second rotating device 710 is fixedly connected to one end of the first connecting rod 730.

In addition to the above embodiment, as shown in fig. 6, the first rotating device 610 includes a first mounting seat 611 and a first motor 612 mounted in the first mounting seat 611, and a rotation shaft of the first motor 612 is fixedly connected with the first shaft through a coupling 613; the second rotating device 710 includes a second mounting seat 711 and a second motor 712 mounted in the second mounting seat 711, wherein the second motor 712 may be a hollow hub motor, and the second motor 712 is configured with an annular inner stator portion and an annular outer rotor portion; the second shaft passes through the inner stator part and is rotationally connected with the second mounting seat 711, the outer rotor part is fixedly connected with the second connecting rod 740 through the connecting sleeve 713, and the connecting sleeve 713 is sleeved outside the second shaft.

It should be noted that, for the first mirror carrier 620, a first shaft thereof is connected to the rotation shaft of the first motor 612, and a second shaft thereof passes through the inner stator portion to be rotatably connected to the second mounting seat 711, so that stability thereof is improved, thereby ensuring adjustment accuracy of the second mirror 300; meanwhile, the second motor 712 is disposed around the second shaft, and is fixedly connected to the second connecting rod 740 through the outer rotor and the connecting sleeve 713 thereof, so as to drive the second connecting rod 740 and the first connecting rod 730 to swing, thereby enabling the diffusing mirror 500 to rotate around the second reflecting mirror 300. In this embodiment, the first rotating device 610 is located at one side of the first mirror carrier 620, and the second rotating device 710 is located at the other side of the first mirror carrier 620, so that the force applied to the first rotating device 610 at one side of the first mirror carrier 620 and the force applied to the second rotating device 710 at two sides of the first mirror carrier 620 are more balanced, thereby ensuring the installation accuracy of the second reflecting mirror 300; further, since the first motor 612 and the second motor 712 are provided substantially coaxially, the mounting accuracy between the second mirror 300 and the diffusing mirror 500 can be ensured.

Further, as shown in fig. 6, the diffusion angle adjusting assembly 800 includes a third motor 810, a first synchronizing wheel, a second synchronizing wheel 820, and a third synchronizing wheel 830; the first synchronizing wheel is mounted on the motor shaft of the third motor 810, the second synchronizing wheel 820 is mounted on the first shaft, and the third synchronizing wheel 830 is mounted on the third shaft 721; the first synchronizing wheel and the second synchronizing wheel 820 are sleeved with a first synchronizing belt 840, and the second synchronizing wheel 820 and the third synchronizing wheel 830 are sleeved with a second synchronizing belt 850. Through the above arrangement, the third motor 810 can drive the second synchronous wheel 820 to rotate through the first synchronous wheel and the first synchronous belt 840; the third synchronizing wheel 830 is driven to rotate by the second synchronizing wheel 820 and the second synchronizing belt 850, so that the third synchronizing wheel 830 can drive the third shaft 721 to rotate, and the rotation angle of the diffusing mirror 500 is adjusted by the second mirror carrier 720.

It can be understood that in this embodiment, the position accuracy of the first synchronizing wheel is ensured by the third motor 810, the second synchronizing wheel 820 can simultaneously tension the first synchronizing belt 840 and the second synchronizing belt 850, the third synchronizing wheel 830 is mounted at the end of the connecting rod and drives the second mirror carrier 720 to rotate through the third shaft 721, and since the position of the second synchronizing wheel 820 does not change, the timing belt can be ensured to be in a tensioning state, so that the rotation angle accuracy of the second mirror carrier 720 is ensured, that is, the diffusion accuracy of the diffusion laser 004 is ensured.

Moreover, through the above-mentioned structure, the first motor 612, the second motor 712 and the third motor 810 are installed on the same frame 900, so as to facilitate the internal wiring of the dual-optical-path composite laser welding apparatus, and make the overall structure of the dual-optical-path composite laser welding apparatus more compact.

In summary, the dual-optical-path composite laser welding device provided by the embodiment has the welding capability of large-size workpieces, and has the advantages of low cost, higher welding quality, convenient wiring, high precision, more compact structure and the like.

Embodiment two:

the embodiment also provides a processing method of the dual-optical-path composite laser welding device, which adopts the dual-optical-path composite laser welding device in the first embodiment and comprises the following steps:

S1, planning a welding path;

S2, enabling the first laser 002 to be projected to an initial welding position in a welding path along a second direction, and enabling the second laser 003 to be projected to the initial welding position in the welding path at a first inclination angle;

S3, enabling the electric welding source 400 to project at a second inclination angle to an initial welding position in a welding path;

s4, controlling the electric welding source 400, the second laser 003 and the first laser 002 to move along a welding path. The movement of the laser and electric welding source 400 with respect to the welding path may be performed by moving the workpiece, or may be performed by moving the frame 900, and is not particularly limited.

The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. A dual-optical path composite laser welding device is characterized by comprising a laser generating source (100), a first reflecting mirror (200) and a second reflecting mirror (300) which are sequentially arranged at intervals along a first direction; a welding position (001) is arranged on one side of the first reflecting mirror (200) along the second direction; the second direction is perpendicular to the first direction;

The laser light generation source (100) is used for generating a laser light main body emitted along the first direction; the first mirror (200) is used for reflecting the laser body to form a first laser (002) which is reflected on the welding position (001) along the second direction;

The first reflecting mirror (200) has light transmittance and is also used for transmitting the laser main body to form second laser (003); the second reflecting mirror (300) is used for reflecting the second laser (003) and reflecting the second laser on the welding position (001) at a first inclined angle;

The dual-light path composite laser welding equipment further comprises an electric welding source (400), wherein the electric welding source (400) projects a heat affected zone (005) on the welding position (001) at a second inclination angle;

wherein the electric welding source (400) is arranged on one side of the second laser (003) far away from the first laser (002), and the second inclination angle is larger than the first inclination angle;

The double-light-path composite laser welding equipment further comprises a diffusion mirror (500), a first rotating device (610), a first mirror carrier (620), a second rotating device (710), a second mirror carrier (720) and a diffusion angle adjusting assembly (800), wherein the diffusion mirror (500) is arranged on a light path of the second laser (003) after being reflected and is used for diffusing the second laser (003); -the second mirror (300) is mounted on the first mirror carrier (620); the rotating end of the first rotating device (610) is fixedly connected with the first mirror carrier (620) and is used for changing the first inclination angle;

-the diffusing mirror (500) is mounted on the second mirror carrier (720); the second mirror carrier (720) is rotatably connected to a rotating end of the second rotating device (710), and the rotating end of the second rotating device (710) is used for driving the diffusion mirror (500) to rotate around the second reflecting mirror (300);

The rotating end of the diffusion angle adjusting assembly (800) is fixedly connected with the second mirror carrier (720), wherein the rotating end of the diffusion angle adjusting assembly (800) and the rotating end of the second rotating device (710) are coaxially arranged.

2. The dual-optical path composite laser welding apparatus according to claim 1, wherein a first axis extends from one side of the first mirror carrier (620), a second axis extends from the other side of the first mirror carrier (620), and the second axis is disposed coaxially with the first axis;

A third shaft (721) extends from one side of the second mirror carrier (720), and a fourth shaft (722) extends from the other side of the second mirror carrier (720);

A first connecting rod (730) is connected between the first shaft and the third shaft (721), one end part of the first connecting rod (730) is rotatably connected to the first shaft, and the other end part of the first connecting rod (730) is rotatably connected to the third shaft (721);

A second connecting rod (740) is connected between the second shaft and the fourth shaft (722), one end part of the second connecting rod (740) is rotatably connected to the second shaft, and the other end part of the second connecting rod (740) is rotatably connected to the fourth shaft (722);

The rotating end of the first rotating device (610) is fixedly connected with the first shaft or the second shaft, and the rotating end of the second rotating device (710) is fixedly connected with one end of the first connecting rod (730) or one end of the second connecting rod (740).

3. A dual optical path compound laser welding apparatus as claimed in claim 2 wherein the first rotation means (610) is located on one side of the first mirror carrier (620) and the second rotation means (710) is located on the other side of the first mirror carrier (620);

The rotating end of the first rotating device (610) is fixedly connected with the first shaft, and the rotating end of the second rotating device (710) is fixedly connected with one end part of the second connecting rod (740); or alternatively

The rotating end of the first rotating device (610) is fixedly connected with the second shaft, and the rotating end of the second rotating device (710) is fixedly connected with one end part of the first connecting rod (730).

4. The dual-optical path composite laser welding apparatus according to claim 2, wherein the first rotating device (610) comprises a first mounting seat (611) and a first motor (612) mounted in the first mounting seat (611), and a rotating shaft of the first motor (612) is fixedly connected with the first shaft through a coupling (613);

the second rotating device (710) comprises a second mounting seat (711) and a second motor (712) mounted in the second mounting seat (711), wherein the second motor (712) is provided with an annular inner stator part and an annular outer rotor part; the second shaft penetrates through the inner stator part to be rotationally connected with the second mounting seat (711), the outer rotor part is fixedly connected with the second connecting rod (740) through a connecting sleeve (713), and the connecting sleeve (713) is sleeved outside the second shaft.

5. The dual light path composite laser welding apparatus of claim 2, wherein the diffusion angle adjusting assembly (800) comprises a third motor (810), a first synchronizing wheel, a second synchronizing wheel (820), and a third synchronizing wheel (830);

The first synchronizing wheel is mounted on a motor shaft of the third motor (810), the second synchronizing wheel (820) is mounted on the first shaft, and the third synchronizing wheel (830) is mounted on the third shaft (721); the first synchronous wheel and the second synchronous wheel (820) are sleeved with a first synchronous belt (840), and the second synchronous wheel (820) and the third synchronous wheel (830) are sleeved with a second synchronous belt (850).

6. The dual beam path composite laser welding apparatus of claim 1, wherein the first direction is a horizontal direction and the second direction is a vertical direction.

7. A method of processing a dual-optical-path composite laser welding apparatus, characterized by employing the dual-optical-path composite laser welding apparatus as claimed in any one of claims 1 to 6, comprising:

Planning a welding path;

Enabling the first laser to be projected to an initial welding position in the welding path along the second direction, and enabling the second laser to be projected to the initial welding position in the welding path at a first inclination angle;

enabling the electric welding source to project at a second inclination angle to an initial welding position in the welding path;

and controlling the electric welding source, the second laser and the first laser to move along a welding path.