Composite welding device with laser guided by electric arc

Abstract

The invention relates to the technical field of welding, and discloses an arc-guided laser hybrid welding device which comprises a mounting frame, and a laser welding head, a laser range finder, a welding gun, a shielding gas blowing part, a welding seam tracker, an air knife and a dust hood which are detachably mounted on the mounting frame, the laser range finder is used for measuring the distance between the laser welding head and the surface of the to-be-welded workpiece; in the welding direction, the welding gun and the shielding gas blowing part are located on the front side and the rear side of the laser welding head respectively, the welding seam tracking sensor is located on the front side of the welding gun, the positions of the welding gun and the shielding gas blowing part are adjustable in the X-axis direction, the Y-axis direction and the Z-axis direction, and the positions of the welding seam tracking sensor are adjustable in the Y-axis direction and the Z-axis direction. In the Y-axis direction, the air knife and the dust collection cover are located on the two sides of the laser welding head correspondingly, the position of the air knife in the Z-axis direction and the angle of the air knife around the X-axis direction are adjustable, and the position of the dust collection cover in the Z-axis direction and the angle of the dust collection cover around the X-axis direction are adjustable. The integration level and the space utilization rate are high, and the use convenience is good.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a composite welding device of arc-guided laser. Background Art

[0002] In the field of laser welding, the application of robot laser arc hybrid automatic welding platform is becoming more and more extensive, and most of the applications are laser guided arc hybrid welding. However, for the field of shipbuilding heavy industry, since shipbuilding heavy industry is mostly thick steel plate welding, it is particularly important to control welding deformation in thick plate welding. In the laser guided arc mode, since the laser is in front, its high energy input will lead to a large heat affected zone and post-weld deformation; and during laser guided arc welding, the weld cross-section is characterized by equiaxed fine grains, and the molten pool oscillation is more serious during the welding process, and the molten droplet is prone to explosive transition, resulting in insufficient weld formation consistency. At the same time, in the existing hybrid welding device, the function is relatively single. During the welding process, other functional modules need to be used to assist welding. Not only is the operation cumbersome, for example, it is necessary to manually use tools such as rulers for multiple measurements, the focal length measurement process is cumbersome, and the overall space occupied by multiple modules is large; at the same time, the position of each functional module is relatively fixed. Once the installation is completed, there may be relative position errors between the modules. For example, the wire spacing after the welding gun is installed may have a certain error, and the modules are inconvenient to debug during the welding process, which is easy to affect the welding quality and welding efficiency.

[0003] Therefore, there is an urgent need for an arc-guided laser hybrid welding device to solve the above problems. Summary of the invention

[0004] Based on the above, the purpose of the present invention is to provide an arc-guided laser hybrid welding device with high integration and space utilization, better ease of use, better welding quality and efficiency, and suitable for thick plate welding.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An arc-guided laser composite welding device comprises: a mounting frame and a laser welding head, a laser rangefinder, a welding gun, a protective gas blowing part, a weld tracker, an air knife and a dust hood which are detachably mounted on the mounting frame;

[0007] The laser rangefinder is used to measure the distance between the laser welding head and the surface of the workpiece to be welded;

[0008] Along the welding direction of the hybrid welding device, the welding gun and the shielding gas blowing member are respectively located at the front side and the rear side of the laser welding head, the weld seam tracking sensor is located at the front side of the welding gun, the welding gun and the shielding gas blowing member are both positionally adjustable along the X-axis direction, the Y-axis direction and the Z-axis direction, the weld seam tracking sensor is positionally adjustable along the Y-axis direction and the Z-axis direction, the shielding gas blowing member is used to blow shielding gas to the welding position, and the weld seam tracking sensor is used to detect the weld seam position, wherein the X-axis direction is consistent with the welding direction of the hybrid welding device;

[0009] Along the Y-axis direction, the wind knife and the dust hood are respectively located on both sides of the laser welding head, the wind knife is adjustable in position along the Z-axis direction and in angle around the X-axis direction, the dust hood is adjustable in position along the Z-axis direction and in angle around the X-axis direction, the wind knife is used to blow away spatter and smoke generated by welding, the dust hood is connected to an external negative pressure device through a hose, and the dust hood is used to absorb the spatter and the smoke.

[0010] As a preferred solution of the arc-guided laser hybrid welding device, it also includes an optical fiber protection module, which includes a fixed cylinder and a corrugated tube;

[0011] The corrugated tube is sleeved outside the optical fiber;

[0012] One end of the fixed sleeve is detachably sleeved on the optical fiber interface of the laser welding head, and the other end is detachably sleeved and fixed to one end of the corrugated tube. A side wall of the fixed sleeve is provided with an escape opening for passing the air pipe and water pipe of the laser welding head and the optical fiber head.

[0013] As a preferred solution of an arc-guided laser hybrid welding device, the fixed cylinder comprises a first fixed sleeve, a second fixed sleeve and an arc-shaped card;

[0014] One end of the first fixed sleeve is detachably sleeved on the optical fiber interface of the laser welding head, one end of the corrugated tube is in contact with the other end of the fixed sleeve, and the side of the first fixed sleeve is open to form the avoidance opening;

[0015] A portion of the second fixed sleeve is sleeved outside the first fixed sleeve, and another portion is sleeved outside the corrugated tube;

[0016] The inner edge of the arc-shaped card is inserted into a groove outside the corrugated tube and is detachably connected to the end of the second fixing sleeve away from the first fixing sleeve.

[0017] As a preferred solution of the arc-guided laser hybrid welding device, it also includes a weld tracking adjustment mechanism, which includes a weld tracking connecting plate, a base, a first slider and a second slider;

[0018] The weld tracking connecting plate is positionally adjustable in the Z-axis direction and detachably connected to the mounting frame;

[0019] The base is arranged on the weld tracking connection plate, the first slider is slidably connected to the base along the Y-axis direction, the second slider is slidably connected to the first slider along the first direction, and the weld tracker is detachably mounted on the second slider, wherein the first direction is perpendicular to the Y-axis direction, and the angle between the first direction and the Z-axis direction is a non-perpendicular preset angle.

[0020] As a preferred solution of the arc-guided laser hybrid welding device, the weld tracking adjustment mechanism further includes at least two first adjustment rods and at least two second adjustment rods;

[0021] The first adjusting rod is arranged on the base so as to move along the Y-axis direction, and the opposite ends of at least two of the first adjusting rods are respectively in contact with the two sides of the first sliding block, and the first sliding block is pushed to move along the Y-axis direction as the first adjusting rod moves;

[0022] The second adjusting rod is arranged on the first sliding block and moves along the first direction. The opposite ends of at least two second adjusting rods are respectively abutted against two sides of the second sliding block. As the second adjusting rod moves, the second sliding block is pushed to move along the first direction.

[0023] As a preferred solution of the arc-guided laser hybrid welding device, it also includes a welding gun adjustment mechanism, which includes an X-axis moving platform, a Y-axis moving platform, a Z-axis moving platform and a welding gun connecting piece;

[0024] The X-axis movable table is detachably mounted on the mounting frame, the Y-axis movable table is connected to the X-axis movable surface of the X-axis movable table, the Z-axis movable table is connected to the Y-axis movable surface of the Y-axis movable table, the welding gun connecting piece is connected to the Z-axis movable surface of the Z-axis movable table, and the welding gun is detachably mounted on the welding gun connecting piece.

[0025] As a preferred solution of the arc-guided laser hybrid welding device, it also includes a blowing piece adjustment mechanism, and the blowing piece adjustment mechanism includes a first connecting plate, a second connecting plate and a third connecting plate;

[0026] The first connecting plate is adjustably connected to the mounting frame in the Z-axis direction and the Y-axis direction, the second connecting plate is adjustably connected to the first connecting plate in the X-axis direction, the third connecting plate is adjustably connected to the second connecting plate in the Z-axis direction, and the protective gas blowing member is detachably mounted on the third connecting plate;

[0027] As a preferred solution for an arc-guided laser composite welding device, the protective gas blowing component includes a gas exhaust pipe, one end of the gas exhaust pipe is provided with multiple air inlets, and the other end is provided with a connected gas collecting groove and a blowing port, and multiple guide grooves are arranged at intervals in the gas exhaust pipe, one end of each of the guide grooves is connected to one of the air inlets, and the other end is connected to the gas collecting groove, the air inlet is used to connect to an external air supply device, and the blowing port is facing the laser welding head.

[0028] As a preferred solution of the arc-guided laser hybrid welding device, it also includes an air knife adjustment mechanism, which includes an air knife adapter plate, a first angle adjustment plate and an air knife connecting plate;

[0029] The wind knife adapter plate is connected to the mounting frame in an adjustable position in the Z-axis direction, the angle adjustment plate is connected to the wind knife adapter plate, a rotating hole and a first arc hole are provided on the angle adjustment plate, the wind knife connecting plate is movably connected to the rotating hole and the first arc hole by a rotating pin and a fixed pin respectively, the arc center of the first arc hole coincides with the hole center of the rotating hole, the axial directions of the rotating pin and the fixed pin are consistent with the X-axis direction, the wind knife is detachably mounted on the wind knife connecting plate, and the air outlet of the wind knife faces the welding position.

[0030] As a preferred solution of the arc-guided laser hybrid welding device, it also includes a follow-up dust suction adjustment mechanism, which includes a dust removal connecting plate, a second angle adjustment plate and a fixed clamp;

[0031] The dust suction connecting plate is adjustably connected to the mounting frame in the Z-axis direction, the second angle adjustment plate is adjustably connected to the dust suction connecting plate around the X-axis direction, the fixed hoop is fixed on the second angle adjustment plate, and the fixed hoop includes two rotatably connected holding rings, and the free ends of the two holding rings are detachably connected for tightening or loosening the dust hood.

[0032] The beneficial effects of the present invention are:

[0033] The invention provides an arc-guided laser composite welding device, which comprises a laser welding head, a laser rangefinder, a welding gun, a protective gas blowing part, a weld seam tracker, an air knife and a dust hood integrated on a mounting frame. By arranging the welding gun, the protective gas blowing part, the air knife and the dust hood on the peripheral side of the laser welding head, the composite welding device has relatively complete functions, high integration and high overall space utilization. The laser rangefinder, the air knife and the dust hood that follow during welding can timely and effectively ensure the smoothness and accuracy of the welding process, and extend the service life of the laser welding head protective lens, and each component does not need to be repeatedly operated separately during the welding process, thereby reducing the cumbersomeness of the welding process. The arc-guided laser welding is also realized by the welding gun in front, the heat input is relatively uniform, the coupling effect of the two heat sources is better, the weld seam forming effect is better, and the device can be well applied to thick plate welding. At the same time, by arranging the position-adjustable weld seam tracker in front of the position-adjustable welding gun, not only the accuracy of welding can be ensured, but also the debugging time can be saved, and the convenience of test operation and welding efficiency can be improved. The composite welding device not only has a high degree of integration, but also has strong independence of each functional component, which is easy to replace and repair, and can also achieve compatibility of different models of components, thereby improving the convenience, practicality and scope of application;

[0034] The optical fiber protection module also provides good protection for the optical fiber head. The corrugated tube is fixed by a fixing sleeve. When the welding posture is switched over a large range and a large angle, the fixed position of the corrugated tube is the concentrated force position, so that the optical fiber always keeps moving inside the corrugated tube, avoiding damage due to excessive force or excessive bending angle, and greatly improving the service life of the optical fiber head. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0036] Figure 1 It is a schematic structural diagram of an arc-guided laser hybrid welding device at a viewing angle provided by an embodiment of the present invention;

[0037] Figure 2 is a schematic structural diagram of an arc-guided laser hybrid welding device provided by an embodiment of the present invention from another perspective;

[0038] Figure 3 Schematic diagram of a partial structure of an arc-guided laser hybrid welding device provided by an embodiment of the present invention at a first viewing angle Figure 1 (Robot not shown);

[0039] Figure 4 Schematic diagram of a partial structure of an arc-guided laser hybrid welding device at a second viewing angle provided by an embodiment of the present invention Figure 2 (Robot not shown);

[0040] Figure 5 Schematic diagram of a partial structure of an arc-guided laser hybrid welding device provided by an embodiment of the present invention at a third viewing angle Figure 3 (Robot not shown);

[0041] Figure 6 yes Figure 5 A magnified view of part A;

[0042] Figure 7 FIG. 1 is a schematic diagram of a partial structure of an arc-guided laser hybrid welding device provided by an embodiment of the present invention at a fourth viewing angle. Figure 4 (Robot not shown);

[0043] Figure 8 is a schematic structural diagram of a protective gas blowing member provided in an embodiment of the present invention;

[0044] Fig. 9 FIG. 1 is a schematic diagram of a partial structure of an arc-guided laser hybrid welding device at a fifth viewing angle provided by an embodiment of the present invention. Figure 5 (Robot not shown);

[0045] Fig.10 is a schematic diagram of the structure of the air knife provided by an embodiment of the present invention;

[0046] Fig.11 yes Figure 1 A magnified view of part B;

[0047] Fig.12 is a schematic structural diagram of an optical fiber protection module provided by an embodiment of the present invention;

[0048] Fig.13 It is a partial structural diagram of an optical fiber protection module provided in an embodiment of the present invention.

[0049] In the figure:

[0050] 1. Mounting frame; 11. Main mounting plate; 12. First mounting plate; 13. Second mounting plate; 14. Third mounting plate; 15. Fourth mounting plate; 16. Fifth mounting plate;

[0051] 2. Laser welding head; 3. Laser rangefinder; 4. Welding gun; 5. Shielding gas blowing parts; 51. Gas exhaust pipe; 5101. Guide groove; 5102. Gas collecting groove; 5103. Blowing port; 6. Weld seam tracker; 7. Air knife; 8. Dust hood;

[0052] 9. Optical fiber protection module; 91. Fixed cylinder; 911. First fixed sleeve; 9110. Avoidance; 912. Second fixed sleeve; 9121. Half cylinder; 913. Arc card; 92. Corrugated tube;

[0053] 10. Robots;

[0054] 101, weld seam tracking adjustment mechanism; 1011, weld seam tracking connecting plate; 1012, base; 1013, first slider; 1014, second slider; 1015, first adjustment rod; 1016, second adjustment rod;

[0055] 102, welding gun adjustment mechanism; 1021, X-axis moving platform; 1022, Y-axis moving platform; 1023, Z-axis moving platform; 1024, welding gun connecting piece;

[0056] 103, blowing piece adjustment mechanism; 1031, first connecting plate; 1032, second connecting plate; 1033, third connecting plate;

[0057] 104, wind knife adjustment mechanism; 1041, wind knife adapter plate; 1042, first angle adjustment plate; 1043, wind knife connecting plate;

[0058] 105. Follow-up dust suction adjustment mechanism; 1051. Dust removal connecting plate; 1052. Second angle adjustment plate; 1053. Fixed clamp. DETAILED DESCRIPTION

[0059] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0060] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0062] In the description of the present embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0063] like Figures 1 to 13 As shown, this embodiment provides an arc-guided laser hybrid welding device, which includes a mounting frame 1 and a laser welding head 2, a laser rangefinder 3, a welding gun 4, a protective gas blowing member 5, a weld seam tracker 6, an air knife 7 and a dust cover 8, which can be detachably mounted on the mounting frame 1. The laser rangefinder 3 is used to measure the distance between the laser welding head 2 and the surface of the workpiece to be welded, and the distance between the laser welding head 2 and the surface of the workpiece to be welded is measured along the welding direction of the hybrid welding device (such as Figure 3 and Fig. 9The welding gun 4 and the protective gas blowing member 5 are respectively located on the front and rear sides of the laser welding head 2, and the weld seam tracking sensor is located on the front side of the welding gun 4. The welding gun 4 and the protective gas blowing member 5 are both adjustable in position along the X-axis direction, the Y-axis direction and the Z-axis direction. The weld seam tracking sensor is adjustable in position along the Y-axis direction and the Z-axis direction. The protective gas blowing member 5 is used to blow protective gas to the welding position. The weld seam tracking sensor is used to detect the weld position, wherein the X-axis direction is consistent with the welding direction of the composite welding device; along the Y-axis direction, the air knife 7 and the dust hood 8 are respectively located on both sides of the laser welding head 2, the air knife 7 is adjustable in position along the Z-axis direction and the angle is adjustable around the X-axis direction, the dust hood is adjustable in position along the Z-axis direction and the angle is adjustable around the X-axis direction, the air knife 7 is used to blow compressed air to the welding position, the dust hood 8 is connected to the external negative pressure equipment through a hose, and the dust hood 8 is used to absorb the smoke generated by welding. By arranging the welding gun 4, the protective gas blowing part 5, the air knife 7 and the dust cover 8 on the peripheral side of the laser welding head 2, the composite welding device has relatively complete functions, high integration, and high overall space utilization; the laser rangefinder 3, the air knife 7 and the dust cover 8 that follow the welding can timely and effectively ensure the smoothness and accuracy of the welding process, and extend the service life of the protective lens of the laser welding head 2, and each component does not need to be repeatedly operated separately during the welding process, reducing the cumbersomeness of the welding process; the arc-guided laser welding is also realized by the welding gun 4 in front, the heat input is relatively uniform, and the coupling effect of the two heat sources is better, so that the weld forming effect is better, which can be better applied to thick plate welding; at the same time, by arranging the position-adjustable weld tracker 6 in front of the position-adjustable welding gun 4, not only the accuracy of welding can be guaranteed, but also the debugging time can be saved, and the convenience of test operation and welding efficiency can be improved. The composite welding device not only has a high degree of integration, but also the independence of each functional component is strong, which is convenient for replacement and maintenance, and can also achieve compatibility of different models of each component, improving the convenience, practicality and scope of application.

[0064] Among them, the laser rangefinder 3 can be a commercially available laser rangefinder 3, and the laser rangefinder 3 is fixed to the mounting frame 1 by bolts or other mounting methods, so that the laser rangefinder 3 and the laser welding head 2 can follow each other, and there is no need to repeatedly measure the distance between the laser welding head 2 and the surface of the workpiece to be welded during the welding process. That is, when the composite welding device welds the workpiece to be welded, as it moves along the welding direction, the laser rangefinder 3 moves accordingly, and can measure the distance from the laser welding head 2 to the surface of the workpiece to be welded in real time, and then can quickly and accurately determine the value of the defocus amount, ensure the accuracy of laser welding, and simplify the test operation.

[0065] In this embodiment, if Figure 1 and Figure 2As shown, the arc-guided laser hybrid welding device also includes a robot 10, and the mounting frame 1 can be detachably connected to the mounting flange tooling of the robot 10. The mounting frame 1 is driven by the robot 10 to move, so that the welding gun 4 and the laser welding head 2 move along the weld to weld, thereby realizing automatic welding and precise welding.

[0066] Specifically, the mounting frame 1 includes a main mounting plate 11, which is connected to the mounting flange tooling of the robot 10. The laser welding head 2 is detachably connected to the main mounting plate 11, for example, detachably connected to the main mounting plate 11 by bolts, so that different models of laser welding heads 2 can be replaced to achieve welding of different welding objects.

[0067] Furthermore, if Figure 4 As shown, the mounting frame 1 also includes a first sub-mounting plate 12, which is mounted on the main mounting plate 11. For example, the first sub-mounting plate 12 includes a welding gun connecting plate and a first L-shaped adapter plate. The welding gun connecting plate is mounted on the back of the main mounting plate 11 by bolts for easy disassembly and assembly. The first L-shaped adapter plate is connected to the welding gun connecting plate. In the welding direction, the transverse plate of the first L-shaped adapter plate is located at the front side of the main mounting plate 11 and is parallel to the horizontal plane. The composite welding device also includes a welding gun adjustment mechanism 102, which is detachably connected to the first sub-mounting plate 12, specifically installed on the transverse plate of the first L-shaped adapter plate. The welding gun 4 is connected to the welding gun adjustment mechanism 102, that is, the first sub-mounting plate 12 provides an installation position for the welding gun adjustment mechanism 102, and the welding gun 4 is integrated on the mounting plate through the welding gun adjustment mechanism 102 and the first sub-mounting plate 12. The first sub-mounting plate 12 of the above structure allows the welding gun 4 to have sufficient installation space and has a low possibility of interference with other structures.

[0068] Preferably, a reinforcing plate is connected to the side surface of the first L-shaped adapter plate to improve the structural strength and stability of the first auxiliary mounting plate 12 .

[0069] Preferably, the first auxiliary mounting plate 12 is connected to the main mounting plate 11 in an adjustable position in the Z-axis direction. For example, the main mounting plate 11 is provided with multiple rows of first adjustment holes spaced apart in the Z-axis direction, and the first connecting plate 1031 is connected to one of the rows of first adjustment holes by bolts to achieve adjustment of the first connecting plate 1031 in the Z-axis direction, thereby achieving a large adjustment of the welding gun 4 as a whole in the Z-axis direction, so that when installing the welding gun 4, the installation height of the welding gun 4 can be selected according to the needs. Of course, in other embodiments, the main mounting plate 11 can also be provided with a first strip hole extending in the Z-axis direction to achieve stepless adjustment of the installation height of the welding gun 4.

[0070] Specifically, refer again to Figure 4The welding gun adjustment mechanism 102 includes an X-direction moving table 1021, a Y-direction moving table 1022, a Z-direction moving table 1023 and a welding gun connector 1024. The X-direction moving table 1021 can be detachably mounted on the mounting frame 1, specifically, can be detachably mounted on the horizontal plate of the first L-shaped adapter plate. The Y-direction moving table 1022 is connected to the X-direction moving surface of the X-direction moving table 1021. The Z-direction moving table 1023 is connected to the Y-direction moving surface of the Y-direction moving table 1022. The welding gun connector 1024 is connected to the Z-direction moving surface of the Z-direction moving table 1023. The welding gun 4 can be detachably mounted on the welding gun connector 1024. After the approximate position of the welding gun 4 is determined by the first auxiliary mounting plate 12, the position of the welding gun 4 is finely adjusted by the welding gun adjustment mechanism 102, so that the position accuracy of the welding gun 4 is high. By adjusting the X-direction moving surface of the X-direction moving table 1021, the Y-direction moving table 1022 and the Z-direction moving table 1023 are moved along the X-axis direction, thereby realizing the movement of the welding gun 4 along the X-axis direction. By adjusting the Y-direction moving surface of the Y-direction moving table 1022, the Z-direction moving table 1023 is driven to move along the Y-axis direction, thereby driving the welding gun 4 to move along the Y-axis direction. By adjusting the Z-direction moving surface of the Z-direction moving table 1023, the welding gun 4 is moved along the Z-axis direction. Among them, the X-axis moving table 1021, the Y-axis moving table 1022, and the Z-axis moving table 1023 can be selected from commercially available products, for example, the X-axis moving table 1021 can be selected from the "LSD-65251CR" of "Xin Yin Technology", the Y-axis moving table 1022 can be selected from the "LSD-65251L" of "Xin Yin Technology", and the Z-axis moving table 1023 can be selected from the "LSD-6015Z" of "Xin Yin Technology". The adjustment knob 1023 can realize fine adjustment of the position of the welding gun 4 in the three directions of X, Y and Z, and the adjustment knob has a scale, which can accurately obtain the adjustment displacement, improve the adjustment accuracy and convenience, and the relative position of the welding wire and the focus of the laser welding head 2 can be quantified through the scale knob, which greatly improves the adjustment accuracy of the welding gun 4 position, and the adjustment accuracy can reach 0.01mm, and the knob-type adjustment method is simple and convenient, which is convenient for manual operation, and greatly saves the process debugging time of the position of the welding gun 4 in laser welding. Of course, in other embodiments, the X-axis moving table 1021, the Y-axis moving table 1022, and the Z-axis moving table 1023 can also be other structures or products, as long as the welding gun 4 can be moved in the X-axis direction, the Y-axis direction and the Z-axis direction. Through the first auxiliary mounting plate 12 and the welding gun adjustment mechanism 102, the precise adjustment of the position of the welding gun 4 is realized, the accuracy of the light wire spacing is guaranteed, and the adjustment through the welding gun adjustment mechanism 102 not only has a high adjustment accuracy and is easy to control the adjustment distance, but also has a simple adjustment process and a short adjustment time.

[0071] Preferably, an insulating adapter plate is provided between the Y-axis moving table 1022 and the Z-axis moving table 1023, so that the Z-axis moving table 1023 and the X-axis moving table 1021 and the Y-axis moving table 1022 below are independent of each other, avoiding current conduction and playing an insulating function. The welding gun 4 and the laser welding head 2 can be insulated to prevent leakage points of the arc welding gun 4 from affecting the working stability of the laser welding head 2.

[0072] More specifically, the welding gun connector 1024 includes a welding gun adapter plate and a welding gun clamping plate. The welding gun adapter plate is detachably connected to the Z-direction moving surface of the Z-direction moving platform 1023, for example, detachably connected by bolts. The welding gun clamping plate and the welding gun adapter plate can be selected as an integrally formed structure or a split detachable connection structure, which is used to clamp the welding gun. For example, a clamping groove is set on the welding gun clamping plate, and the welding gun 4 can be clamped in the clamping groove. The wire outlet of the installed welding gun 4 and the laser emitted by the laser welding head 2 preferably form an optimal welding angle of 45°. The welding gun adapter plate and the welding gun clamping plate enable the overall position of the welding gun 4 after installation to be approximately in the same plane as the laser welding head 2, and then the Y-direction moving platform 1022 is fine-tuned to achieve that the welding gun 4 and the laser welding head 2 are in the same plane, ensuring that the welding point of the laser welding head 2 and the welding point of the welding gun 4 are in a straight line along the welding direction.

[0073] For high-power thick plate welding, the use of the weld tracker 6 can greatly improve the stability of welding quality, wherein the weld tracker 6 is a weld tracking sensor. Since the recognition area of ​​the weld tracker 6 is small, the laser focus position needs to be located at the center of the space area recognized by the weld tracking sensor, so that the weld tracking sensor can be used to the best effect to meet the process debugging requirements. In this embodiment, the composite welding device also includes a second auxiliary mounting plate 13 and a weld tracking adjustment mechanism 101, the weld tracker 6 is detachably connected to the weld tracking adjustment mechanism 101, the second auxiliary mounting plate 13 is detachably connected to the main mounting plate 11, and is specifically detachably connected to the first auxiliary mounting plate 12, for example, it is installed on the side of the horizontal plate of the first L-shaped adapter plate, and the weld tracking adjustment mechanism 101 is detachably connected to the second auxiliary mounting plate 13, that is, it is detachably connected to the main mounting plate 11 through the second auxiliary mounting plate 13, saving space, so that the installed weld tracker 6 can be located on the front side of the welding gun 4.

[0074] Preferably, a second reinforcing plate is provided between the first L-shaped adapter plate and the second auxiliary mounting plate 13 to improve the structural strength and structural stability of the second auxiliary mounting plate 13 , thereby ensuring the stability of the weld tracking adjustment mechanism 101 .

[0075] Specifically, Figure 5 and Figure 6As shown, the weld tracking adjustment mechanism 101 includes a weld tracking connecting plate 1011, a base 1012, a first slider 1013 and a second slider 1014. The weld tracking connecting plate 1011 is positionally adjustable in the Z-axis direction and is detachably connected to the mounting frame 1, specifically connected to the second auxiliary mounting plate 13. For example, the second auxiliary mounting plate 13 is provided with multiple rows of second connecting holes spaced apart in the Z-axis direction. The weld tracking plate is selectively connected to one or more rows of second connecting holes by bolt connection, so that the weld tracking plate is arranged on the second auxiliary mounting plate 1 3, and the above structure is simple, reliable, and easy to disassemble and assemble; the base 1012 is set on the weld tracking connecting plate 1011, the first slider 1013 is slidably connected to the base 1012 along the Y-axis direction, the second slider 1014 is slidably connected to the first slider 1013 along the first direction, and the weld tracker 6 is detachably mounted on the second slider 1014, wherein the first direction is perpendicular to the Y-axis direction, and the angle between the first direction and the Z-axis direction is a non-perpendicular preset angle, and the preset angle is not limited here, for example, 45°, etc. By sliding the first slider 1013, the second slider 1014 is driven to move in the Y-axis direction, so as to realize the position adjustment of the weld tracker 6 in the Y-axis direction, and by sliding the second slider 1014, the position adjustment of the weld tracker 6 in the first direction is realized. Since the first direction is at a non-perpendicular preset angle to the Z-axis direction, the oblique height adjustment of the weld tracker 6 relative to the surface of the workpiece to be welded is realized. The position of the weld tracker 6 can be finely adjusted by sliding the first slider 1013 and the second slider 1014 , and the adjustment operation is convenient and quick, the adjustment process is simple, and the time consumption is short.

[0076] Among them, the weld tracking plate is preferably in the shape of a long strip and extends along the Y-axis direction so as to achieve a reliable connection with the second auxiliary mounting plate 13, while providing sufficient installation space for the base 1012, so that the position of the base 1012 can be close to the welding gun 4 and the laser welding head 2 in the Y-axis direction, that is, the position of the weld tracker 6 after installation is close to the welding gun 4 and the laser welding head 2 in the Y-axis direction. The weld tracker 6 can be placed in the same straight line as the welding gun 4 and the laser welding head 2 in the X-axis direction by fine-tuning the weld tracking adjustment mechanism 101.

[0077] Specifically, the weld tracking adjustment mechanism 101 further includes at least two first adjustment rods 1015 and at least two second adjustment rods 1016. The first adjustment rod 1015 is arranged on the base 1012 for movement along the Y-axis direction. The opposite ends of the at least two first adjustment rods 1015 are respectively abutted against the two sides of the first slider 1013. With the movement of the first adjustment rod 1015, the first slider 1013 is pushed to move along the Y-axis direction. The second adjustment rod 1016 is arranged on the first slider 1013 for movement along the first direction. The opposite ends of the at least two second adjustment rods 1016 are respectively abutted against the two sides of the second slider 1014. With the movement of the second adjustment rod 1016, the second slider 1014 is pushed to move along the first direction. The position of the weld tracker 6 in the Y-axis direction can be finely adjusted by pushing the first adjustment rods 1015 on both sides of the first slider 1013, and the position of the weld tracker 6 in the first direction can be finely adjusted by pushing the second adjustment rods 1016 on both sides of the second slider 1014. The operation is simple and convenient. Exemplarily, the first adjusting rod 1015 and the second adjusting rod 1016 are screw rods, which are threadedly connected to the base 1012, and the first slider 1013 and the second slider 1014 are pushed to slide by screwing the screw rods, which has a simple structure and good structural strength. Of course, in other embodiments, the first adjusting rod 1015 and the second adjusting rod 1016 can also be other structures, for example, the first adjusting rod 1015 and the second adjusting rod 1016 are pin rods, etc., and the pin rods are pushed and pulled by applying force to make the pin rods slide relative to the base 1012, so as to push the first slider 1013 and the second slider 1014 to slide.

[0078] Exemplarily, the base 1012 is U-shaped, and the two opposite side plates of the U-shaped base 1012 in the Y-axis direction are respectively movably connected to at least one first adjusting rod 1015, and two first limit plates are relatively arranged between the two opposite side plates of the U-shaped base 1012 along the first direction, and the first slider 1013 is slidably arranged between the two first limit plates along the Y-axis direction. The end of the first adjusting rod 1015 abuts against the first slider 1013, and the first limit plate limits the position of the first slider 1013 in the first direction to ensure the stability of the sliding direction of the first slider 1013 when sliding; the first slider 1013 is also U-shaped, and the two opposite side plates of the U-shaped first slider 1013 in the first direction are respectively slidably connected to at least one second adjusting rod 1016, and the U-shaped first slider 1013 is relatively arranged with two second limit plates along the Y-axis direction, and the second slider 1014 is slidably arranged between the two second limit plates along the first direction, and the second limit plate limits the position of the second slider 1014 in the Y-axis direction to ensure the stability of the sliding direction when the second slider 1014 slides.

[0079] In this embodiment, through the weld seam tracking adjustment mechanism 101, the weld seam tracker 6 has an adjustment range of ±10 mm in the first direction and an adjustment range of ±10 mm in the Y-axis direction.

[0080] Preferably, a first top screw is threadedly connected to the first limit plate, and a second top screw is threadedly connected to the second limit plate. When the first slider 1013 and the second slider 1014 slide into place, the first top screw and the second top screw are tightened so that the first top screw and the second top screw respectively press the first slider 1013 and the second slider 1014 to ensure that the positions of the first slider 1013 and the second slider 1014 are fixed, thereby ensuring the stability and reliability of the weld tracker 6 during use.

[0081] Preferably, a baffle is detachably connected to the side of the weld tracker 6 facing the welding gun 4 to block smoke and dust generated during the welding process to avoid affecting the weld tracker 6. More preferably, the baffle includes a first baffle and a second baffle, the first baffle is connected to the weld tracker 6 by bolts, and the second baffle is connected to the tail end of the first baffle by adjustable bolt positions, for example, a waist-shaped hole is provided on the second baffle, and the connection position of the second baffle and the first baffle is adjusted to suit different application scenarios. The baffle blocks the splashing metal slag generated during high-power laser arc hybrid welding to avoid damage to the optical lens of the weld tracker 6 and affect the recognition effect and practical life.

[0082] Furthermore, if Figure 7 and Figure 8 As shown, the composite welding device also includes a blowing piece adjusting mechanism 103, which is detachably connected to the mounting frame 1, and the protective gas blowing piece 5 is detachably connected to the blowing piece adjusting mechanism 103. For example, the mounting frame 1 also includes a third sub-mounting plate 14, and the third mounting plate is detachably connected to the main mounting plate 11, preferably vertically mounted on one side of the main mounting plate 11, wherein the third sub-mounting plate 14 is optionally but not limited to being mounted on the main mounting plate 11 by bolts. Specifically, the blowing member adjustment mechanism 103 includes a first connecting plate 1031, a second connecting plate 1032 and a third connecting plate 1033. The first connecting plate 1031 is adjustably connected to the mounting frame 1 in the Z-axis direction and the Y-axis direction, and is specifically connected to the third auxiliary mounting plate 14. The second connecting plate 1032 is adjustably connected to the first connecting plate 1031 along the X-axis direction. The third connecting plate 1033 is adjustably connected to the second connecting plate 1032 along the Z-axis direction. The shielding gas blowing member 5 is detachably mounted on the third connecting plate 1033. Under the above structure, the position adjustment of the shielding gas blowing member 5 in the three directions of X, Y and Z is realized to adapt to different use requirements, and the accuracy of the blowing position of the shielding gas blowing member 5 is ensured, thereby ensuring the welding accuracy.

[0083] Exemplarily, the third sub-mounting plate 14 is provided with multiple rows of third adjustment holes at intervals along the Z-axis direction, the first connecting plate 1031 includes a first sub-connecting plate and a second sub-connecting plate connected vertically, the first sub-connecting plate is selectively connected to one or more rows of third adjustment holes by bolts, that is, the first sub-connecting plate is positionally adjustable in the Z-axis direction, and is convenient and quick, and has good connection strength and reliability. Preferably, a waist-shaped hole is provided on the first sub-connecting plate, the length of which extends along the Y-axis direction, and the waist-shaped hole is connected to the third adjustment hole by bolts. When connecting the first sub-connecting plate and the third sub-mounting plate 14, by adjusting the alignment position of the waist-shaped hole and the third adjustment hole in the Y-axis direction, and then connecting the bolts to fix the first sub-connecting plate and the third sub-mounting plate 14, the adjustment of the first sub-connecting plate in the Y-axis direction is achieved. A first strip hole extending in the X-axis direction is provided on the second sub-connecting plate, the second connecting plate 1032 is connected to the first strip hole by bolts, a second strip hole is provided on the second connecting plate 1032 along the Z-axis direction, and the third connecting plate 1033 is connected to the second strip hole by bolts. The first strip hole and the second strip hole are provided to facilitate the stepless adjustment of the second connecting plate 1032 and the third connecting plate 1033 in the X-axis direction and the Z-axis direction, respectively, and only the bolts need to be loosened for adjustment, which is convenient and quick. The protective gas blowing member 5 can be detachably mounted on the third connecting plate 1033 by bolts, for example, to facilitate replacement and maintenance.

[0084] In this embodiment, the shielding gas blowing member 5 comprises a gas exhaust pipe 51, a plurality of gas inlets are provided at one end of the gas exhaust pipe 51, and the plurality of gas inlets are arranged at intervals along the X-axis direction, for example, 4 or 5 gas inlets are arranged at intervals along the X-axis direction, the other end of the gas exhaust pipe 51 is provided with a connected gas collecting groove 5102 and a gas blowing port 5103, a plurality of guide grooves 5101 are arranged at intervals in the gas exhaust pipe 51, one end of each guide groove 5101 is connected to an gas inlet, and the other end is connected to the gas collecting groove 5102, the gas inlet is used to connect to an external gas supply device, and the gas blowing port 5103 faces the laser welding head 2. During welding, the external gas supply device delivers shielding gas to the shielding gas blowing member 5, for example, nitrogen, helium or argon gas, etc., which is gathered in the gas collecting groove 5102 after passing through the gas inlet and the guide groove 5101, and then blown out through the gas blowing port 5103 to prevent defects caused by oxidation of the weld during laser welding. The gas collecting groove 5102 gathers multiple gases to improve the gathering effect of the shielding gas, so as to enhance the shielding gas protection function during welding, thereby improving the welding quality. Preferably, the guide groove 5101 is inclined from top to bottom toward the direction close to the laser welding head 2, so that the shielding gas flows toward the laser welding head 2.

[0085] Preferably, the gas exhaust pipe 51 is made of copper, which has a higher melting point and a higher laser reflectivity, and has a longer service life.

[0086] In order to prevent the spatters during welding from damaging the protective lens of the laser welding head 2, the spatters and smoke generated by welding are blown away by the air knife 7. Fig. 9 and Fig.10 As shown, the composite welding device also includes a wind knife adjustment mechanism 104, which includes a wind knife adapter plate 1041, a first angle adjustment plate 1042 and a wind knife connecting plate 1043; the wind knife adapter plate 1041 is connected to the mounting frame 1 in an adjustable position in the Z-axis direction; the angle adjustment plate is connected to the wind knife adapter plate 1041, and a rotating hole and a first arc hole are provided on the angle adjustment plate. The wind knife connecting plate 1043 is movably connected to the rotating hole and the first arc hole through a rotating pin and a fixed pin, respectively. The arc center of the first arc hole coincides with the hole center of the rotating hole, and the axial directions of the rotating pin and the fixed pin are consistent with the X-axis direction. The wind knife 7 is detachably mounted on the wind knife connecting plate 1043, and the air outlet of the wind knife 7 faces the welding position. By loosening the fixing pin, the angle adjustment plate can rotate relative to the wind knife adapter plate 1041 with the rotating pin as the axis to adjust the angle of the wind knife 7 thereon. After the adjustment is completed, the rotating pin is tightened to fix the position of the angle adjustment plate and the wind knife adapter plate 1041. The fixing pin can be selected but not limited to a bolt. The above structure is simple and convenient for adjusting the angle of the wind knife 7.

[0087] Preferably, two angle adjustment plates are provided, and the two angle adjustment plates are connected to the wind knife adapter plate 1041 at a relative interval along the X-axis direction. The wind knife connecting plate 1043 includes two connecting rods and a support plate connected between the two connecting rods. The two connecting rods are respectively connected to an angle adjustment plate by a rotating pin and a fixing pin. The wind knife 7 is detachably mounted on the support plate, for example, by bolts. The above structure has high stability, so that the wind knife 7 is not easy to shake when in use, ensuring the effect of blowing off splashes and smoke.

[0088] Exemplarily, in order to avoid interference between the wind knife 7 and other components such as the laser welding head 2, the mounting frame 1 also includes a fourth sub-mounting plate 15, and the fourth sub-mounting plate 15 is adjustably connected to the back of the main mounting plate 11 along the Z-axis direction, where the back refers to the side away from the welding laser head. Specifically, the fourth sub-mounting plate 15 includes a first plate, a second plate and a third plate, the first plate is selectively connected to one or more rows of first adjustment holes on the main mounting plate 11 by bolts, the second plate is perpendicular to the main mounting plate 11, the third plate is perpendicular to the second plate, and is spaced and parallel to the main mounting plate 11, and multiple rows of fourth adjustment holes are opened on the third plate along the Z-axis direction, and the wind knife adapter plate 1041 is selectively connected to one or more rows of fourth adjustment holes by bolts. By setting the wind knife adapter plate 1041 and the fourth sub-mounting plate 15, the wind knife 7 has a larger adjustment space in the Z-axis direction, and under the structure of the fourth sub-mounting plate 15, the wind knife 7 has a certain spacing with the main mounting plate 11, so that the wind knife 7 has sufficient installation space in the Y-axis direction.

[0089] In this embodiment, the wind knife 7 includes a body, which is detachably mounted on the wind knife connecting plate 1043. The body is provided with an air pipe joint for connecting with an external compressed air device. The body has an air outlet section on the side facing the laser welding head 2. The air outlet of the air outlet section faces the laser welding head 2. The air outlet is a rectangle parallel to the Z-axis direction and the X-axis direction. The external compressed air device delivers compressed air into the body and then blows it out through the air outlet of the air outlet section. Preferably, the caliber of the air outlet section in the Z-axis direction gradually narrows toward the direction of the air outlet, which plays a guiding role and increases the air outlet speed. Specifically, the upper wall surface of the air outlet section in the Z-axis direction is tilted downward in the direction close to the air outlet to guide the airflow obliquely downward and finally blown out through the air outlet at high speed to ensure the effect of blowing away splashes and smoke.

[0090] Preferably, the laser welding head 2 is equipped with a coaxial air knife. Through the joint action of the air knife 7 and the coaxial air knife, the protective lens of the laser welding head 2 in the thick plate welding scene of high-power laser has a good protective effect, so that the service life of the protective lens of the laser welding head 2 is longer, the consumption rate of the protective lens is reduced, and it is conducive to reducing costs. It should be noted that the coaxial air knife is a relatively mature existing technology in the field of laser welding, which will not be described one by one here.

[0091] The spatter and smoke generated during the welding process are blown away by the air knife 7 and the coaxial air knife, and then sucked away by the dust hood 8. Specifically, Figure 1 and Fig.11 As shown, the composite welding device also includes a follow-up dust suction adjustment mechanism 105, which includes a dust removal connecting plate 1051, a second angle adjustment plate 1052 and a fixed hoop 1053. The mounting frame 1 also includes a fifth sub-mounting plate 16, which is adjustably connected to the third sub-mounting plate 14 along the Z-axis direction and is parallel to the main mounting plate 11; the dust suction connecting plate is adjustably connected to the mounting frame 1 in the Z-axis direction, specifically connected to the fifth sub-mounting plate 16, the second angle adjustment plate 1052 is adjustably connected to the dust suction connecting plate around the X-axis direction, and the fixed hoop 1053 is fixed on the second angle adjustment plate 1052, and the fixed hoop 1053 includes two rotatably connected holding rings, and the free ends of the two holding rings are detachably connected, for example, by bolts, for tightening or loosening the dust hood 8. By adjusting the positions of the fifth mounting plate 16 and the dust suction connection plate in the Z-axis direction, the position of the dust suction hood 8 in the Z-axis direction can be flexibly adjusted to suit specific welding conditions to ensure the dust suction effect. At the same time, by adjusting the second angle adjustment plate 1052, the angle of the dust suction hood 8 can be adjusted according to the actual welding conditions to ensure that the dust suction port of the dust suction hood 8 is aligned with the spatter and smoke.

[0092] Exemplarily, a plurality of rows of fifth adjustment holes are arranged at intervals along the Z-axis direction on the fifth sub-mounting plate 16, and the dust suction connecting plate is selectively connected to one or more rows of fifth adjustment holes by bolts, and a plurality of sixth adjustment holes are arranged at intervals along the Z-axis direction on the third sub-mounting plate 14, and the fifth sub-mounting plate 16 is selectively connected to the plurality of sixth adjustment holes by bolts, so as to realize coarse adjustment of the position of the fifth sub-mounting plate 16 in the Z-axis direction and fine adjustment of the position of the dust suction connecting plate in the Z-axis direction. In order to avoid interference with other structures, the volumes of the fifth sub-mounting plate 16 and the dust suction connecting plate are limited. The two-step adjustment of the fifth sub-mounting plate 16 and the dust suction connecting plate is beneficial to improving space utilization and ensuring the adjustable range.

[0093] Specifically, a second arc hole is provided on the second angle adjustment plate 1052, and a fixing hole is provided on the dust suction connection plate. The second arc hole and the fixing hole are connected by bolts, and the length direction of the bolts after connection extends along the X-axis direction. When the angle needs to be adjusted, the bolt is loosened, and the second adjustment plate is rotated so that the relative position of the second arc hole and the fixing hole changes, and then the bolt is tightened to fix the second adjustment plate and the dust suction connection plate. The structural cost of the follow-up dust suction adjustment mechanism 105 is low, and the angle adjustment of the dust hood 8 is more convenient.

[0094] Preferably, the dust hood 8 is connected to the external negative pressure equipment through a steel wire hose, and the steel wire hose can be bent freely. As the welding position changes, the robot 10 drives the laser welding head 2, the welding gun 4 and other components to move synchronously, and the dust hood 8 moves synchronously. The steel wire hose can enable the dust hood 8 to move smoothly, realize synchronous dust extraction, and at the same time ensure the reliability of the connection between the dust hood 8 and the external negative pressure equipment.

[0095] Furthermore, if Figure 1 , Fig.12 and Fig.13 As shown, the composite welding device also includes an optical fiber protection module 9, which includes a fixed cylinder 91 and a bellows 92. The bellows 92 is sleeved outside the optical fiber. One end of the fixed cylinder 91 is detachably sleeved on the optical fiber interface of the laser welding head 2, and the other end is detachably sleeved and fixed with one end of the bellows 92. The side wall of the fixed sleeve is provided with a avoidance opening 9110 for passing the air pipe and water pipe of the laser welding head 2 and the optical fiber head. The bellows 92 sleeved outside the optical fiber plays a good protective role on the optical fiber, avoiding the force concentrated on the end of the optical fiber to cause damage to the optical fiber when the welding posture of the robot 10 is switched over a large range and a large angle, and the axial position of the bellows 92 is fixed by the fixed cylinder 91, which can effectively prevent the bellows 92 from moving up and down along its axial direction to expose the end of the optical fiber.

[0096] Specifically, the fixed sleeve 91 includes a first fixed sleeve 911, a second fixed sleeve 912 and an arc card 913. One end of the first fixed sleeve 911 can be detachably sleeved on the optical fiber interface of the laser welding head 2, and one end of the corrugated tube 92 is abutted against the other end of the fixed sleeve. The side of the first fixed sleeve 911 is open, that is, the peripheral wall of the first fixed sleeve 911 is not closed, so that the first fixed sleeve 911 can be sleeved from the side at the optical fiber interface of the laser welding head 2 to which the optical fiber has been connected; a part of the second fixed sleeve 912 is sleeved and fixed outside the first fixed sleeve 911, and the other part is sleeved outside the corrugated tube 92. The second fixed sleeve 912 is preferably two half-cylinders 9121, and the two half-cylinders 9121 can be connected to form a first fixed sleeve 911 with a cylindrical structure; the inner edge of the arc card 913 is inserted into a groove outside the corrugated tube 92, and is detachably connected to the end of the second fixed sleeve 912 away from the first fixed sleeve 911. During installation, the open first fixed sleeve 911 is placed on the optical fiber interface of the laser welding head 2 and fixed, for example, the first fixed sleeve 911 is fixed on the optical fiber interface of the laser welding head 2 by using a top screw, that is, the top screw is threadedly connected to the side wall of the first fixed sleeve 911 and abuts against the outer wall of the optical fiber interface of the laser welding head 2; then the two half-cylinders 9121 are spliced ​​so that a part of the two half-cylinders 9121 is located outside the first fixed sleeve 911 and a part is located outside the corrugated tube 92, for example, the butt surfaces of the two half-cylinders 9121 are fixed by locking screws. Preferably, the two half-cylinders 9121 are fixed to the first fixed sleeve 911 respectively by using a top screw, so that the stability of the second fixed sleeve 912 is better, that is, the top screw is threadedly connected to the half-cylinder 9121 and abuts against the outer wall of the first fixed sleeve 911. Finally, the arc card 913 is placed on the upper end of the second fixed sleeve 912, that is, the end away from the first fixed sleeve 911, and the inner edge of the arc card 913 is inserted into a groove of the corrugated tube 92, and then the arc card 913 is fixed to the upper end of the second fixed sleeve 912 to fix the position of the corrugated tube 92, which can effectively prevent the corrugated tube 92 from moving up and down along its axial direction. Preferably, two or more arc cards 913 are provided, and two or more arc cards 913 are arranged on the upper end surface of the second fixed sleeve 912, and two or more arc cards 913 form a ring, which realizes the axial and radial limit fixation of the corrugated tube 92. The above structure is easy to disassemble and assemble, has a simple structure, and is low in cost. When the welding posture of the robot 10 is switched over a large range and a large angle, the fixed position of the corrugated tube 92 is the concentrated force position, so that the optical fiber always remains in the inner movement of the corrugated tube 92, avoiding the problem of damage caused by excessive force or excessive bending angle, and greatly improving the service life of the optical fiber head.The optical fiber protection module 9 can solve the problem that the optical fiber head is easily damaged when the robot 10 needs to switch the welding posture over a large range and at a large angle. It can keep the end of the optical fiber head always in a vertically upward state, change the concentrated force position of the end of the optical fiber head to the corrugated tube 92, and greatly improve the service life of the optical fiber head. It is also small in size, light in weight, beautiful in appearance, and easy to disassemble.

[0097] Preferably, the second fixing sleeve 912 can also strengthen the limiting of the bellows 92 through a top screw, that is, the top screw is threadedly connected to the second fixing sleeve 912 and abuts against the outer wall of the bellows 92.

[0098] The arc-guided laser composite welding device provided in this embodiment has many functions such as automatic focal length measurement function, follow-up dust removal function, double air knife function, gas protection function, three-dimensional adjustment function of welding gun, two-dimensional adjustment function of weld tracker, and optical fiber head protection. The laser welding head 2 is fixed on the main mounting plate 11, and each functional module is fixed on each auxiliary mounting plate, and each auxiliary mounting plate is connected and fixed to the main mounting plate 11, so that each functional module has strong independence, can be compatible with different models of laser welding heads 2, suitable for different laser welding application scenarios, and is easy to disassemble and assemble, which is convenient for subsequent expansion and maintenance. At the same time, in terms of layout, there are protective gas blowing parts, welding guns, weld trackers, laser rangefinders, dust hoods and air knives on the sides of the laser welding head 2, and there is an optical fiber protection module on it. Its overall layout is reasonable and interference-free, and high space utilization is achieved within a small volume.

[0099] The arc-guided laser composite welding device provided in this embodiment is a highly integrated design scheme for many problems such as long welding test debugging time, too high damage frequency of welding head protective lens, poor gas protection effect, poor dust removal effect, and easy breakage of optical fiber head. The integrated laser rangefinder 3, welding gun adjustment mechanism 102, and weld tracking adjustment mechanism 101 are used to respectively solve the main problems affecting the debugging time, such as cumbersome focal length measurement process, inconvenient welding gun position adjustment, and inconvenient welding seam tracker debugging, which can greatly save the laser welding process test debugging time and improve the convenience and efficiency of process test operation. The integrated air knife adjustment mechanism 104 is used to solve the problem of too high damage frequency of welding head protective lens caused by insufficient protection effect of single coaxial air knife, thereby extending the service life of laser welding head 2 protective lens, and greatly saving the economic cost of high-power laser process test. The blowing piece adjustment mechanism 103 and the protective gas blowing piece 5 are used to enhance the convergence effect of protective gas and improve the gas protection effect during laser welding. The integrated follow-up dust suction adjustment mechanism 105 is used to achieve high negative pressure synchronous dust removal and improve the dust removal effect during robot dynamic welding. The integrated optical fiber head protection module 9 is used to firmly fix the end of the optical fiber head, solving the problem of excessive bending and damage of the optical fiber at the end of the optical fiber head when the robot moves over a large range and at a large angle during welding, thus greatly improving the service life of the optical fiber head.

[0100] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An arc-guided laser hybrid welding device, characterized in that: It comprises a mounting frame and a laser welding head, a laser range finder, a welding gun, a protective gas blowing part, a weld seam tracker, an air knife and a dust hood which are detachably mounted on the mounting frame respectively; The laser rangefinder is used to measure the distance between the laser welding head and the surface of the workpiece to be welded; Along the welding direction of the hybrid welding device, the welding gun and the shielding gas blowing member are respectively located at the front side and the rear side of the laser welding head, the weld seam tracking sensor is located at the front side of the welding gun, the welding gun and the shielding gas blowing member are both positionally adjustable along the X-axis direction, the Y-axis direction and the Z-axis direction, the weld seam tracking sensor is positionally adjustable along the Y-axis direction and the Z-axis direction, the shielding gas blowing member is used to blow shielding gas to the welding position, and the weld seam tracking sensor is used to detect the weld seam position, wherein the X-axis direction is consistent with the welding direction of the hybrid welding device; Along the Y-axis direction, the wind knife and the dust hood are respectively located on both sides of the laser welding head, the wind knife is adjustable in position along the Z-axis direction and in angle around the X-axis direction, the dust hood is adjustable in position along the Z-axis direction and in angle around the X-axis direction, the wind knife is used to blow away spatter and smoke generated by welding, the dust hood is connected to an external negative pressure device through a hose, and the dust hood is used to absorb the spatter and the smoke.

2. The arc-guided laser hybrid welding device according to claim 1, characterized in that: It also includes an optical fiber protection module, which includes a fixed cylinder and a corrugated tube; The corrugated tube is sleeved outside the optical fiber; One end of the fixed sleeve is detachably sleeved on the optical fiber interface of the laser welding head, and the other end is detachably sleeved and fixed to one end of the corrugated tube. A side wall of the fixed sleeve is provided with an escape opening for passing the air pipe and water pipe of the laser welding head and the optical fiber head.

3. The arc-guided laser hybrid welding device according to claim 2, characterized in that: The fixed cylinder comprises a first fixed sleeve, a second fixed sleeve and an arc-shaped card; One end of the first fixed sleeve is detachably sleeved on the optical fiber interface of the laser welding head, one end of the corrugated tube is in contact with the other end of the fixed sleeve, and the side of the first fixed sleeve is open to form the avoidance opening; A portion of the second fixed sleeve is sleeved outside the first fixed sleeve, and another portion is sleeved outside the corrugated tube; The inner edge of the arc-shaped card is inserted into a groove outside the corrugated tube and is detachably connected to the end of the second fixing sleeve away from the first fixing sleeve.

4. The arc-guided laser hybrid welding device according to claim 1, characterized in that: It also includes a weld seam tracking adjustment mechanism, which includes a weld seam tracking connecting plate, a base, a first slider and a second slider; The weld tracking connecting plate is positionally adjustable in the Z-axis direction and detachably connected to the mounting frame; The base is arranged on the weld tracking connection plate, the first slider is slidably connected to the base along the Y-axis direction, the second slider is slidably connected to the first slider along the first direction, and the weld tracker is detachably mounted on the second slider, wherein the first direction is perpendicular to the Y-axis direction, and the angle between the first direction and the Z-axis direction is a non-perpendicular preset angle.

5. The arc-guided laser hybrid welding device according to claim 4, characterized in that: The weld tracking adjustment mechanism also includes at least two first adjustment rods and at least two second adjustment rods; The first adjusting rod is arranged on the base so as to move along the Y-axis direction, and the opposite ends of at least two of the first adjusting rods are respectively in contact with the two sides of the first sliding block, and the first sliding block is pushed to move along the Y-axis direction as the first adjusting rod moves; The second adjusting rod is arranged on the first sliding block and moves along the first direction. The opposite ends of at least two second adjusting rods are respectively abutted against two sides of the second sliding block. As the second adjusting rod moves, the second sliding block is pushed to move along the first direction.

6. The arc-guided laser hybrid welding device according to any one of claims 1 to 5, characterized in that: It also includes a welding gun adjustment mechanism, which includes an X-axis moving platform, a Y-axis moving platform, a Z-axis moving platform and a welding gun connecting piece; The X-axis movable table is detachably mounted on the mounting frame, the Y-axis movable table is connected to the X-axis movable surface of the X-axis movable table, the Z-axis movable table is connected to the Y-axis movable surface of the Y-axis movable table, the welding gun connecting piece is connected to the Z-axis movable surface of the Z-axis movable table, and the welding gun is detachably mounted on the welding gun connecting piece.

7. The arc-guided laser hybrid welding device according to any one of claims 1 to 5, characterized in that: It also includes a blowing piece adjustment mechanism, the blowing piece adjustment mechanism includes a first connecting plate, a second connecting plate and a third connecting plate; The first connecting plate is adjustably connected to the mounting frame in the Z-axis direction and the Y-axis direction, the second connecting plate is adjustably connected to the first connecting plate along the X-axis direction, the third connecting plate is adjustably connected to the second connecting plate along the Z-axis direction, and the protective gas blowing member is detachably mounted on the third connecting plate.

8. The arc-guided laser hybrid welding device according to any one of claims 1 to 5, characterized in that: The protective gas blowing component includes a gas exhaust pipe, one end of which is provided with multiple air inlets, and the other end is provided with a connected air collecting groove and air blowing port. Multiple guide grooves are arranged at intervals in the gas exhaust pipe, one end of each of the guide grooves is connected to one of the air inlets, and the other end is connected to the air collecting groove. The air inlet is used to connect to an external air supply device, and the air blowing port faces the laser welding head.

9. The arc-guided laser hybrid welding device according to any one of claims 1 to 5, characterized in that: It also includes a wind knife adjustment mechanism, which includes a wind knife adapter plate, a first angle adjustment plate and a wind knife connecting plate; The wind knife adapter plate is connected to the mounting frame in an adjustable position in the Z-axis direction, the angle adjustment plate is connected to the wind knife adapter plate, a rotating hole and a first arc hole are provided on the angle adjustment plate, the wind knife connecting plate is movably connected to the rotating hole and the first arc hole by a rotating pin and a fixed pin respectively, the arc center of the first arc hole coincides with the hole center of the rotating hole, the axial directions of the rotating pin and the fixed pin are consistent with the X-axis direction, the wind knife is detachably mounted on the wind knife connecting plate, and the air outlet of the wind knife faces the welding position.

10. The arc-guided laser hybrid welding device according to any one of claims 1 to 5, characterized in that: It also includes a follow-up dust suction adjustment mechanism, which includes a dust removal connecting plate, a second angle adjustment plate and a fixed clamp; The dust suction connecting plate is adjustably connected to the mounting frame in the Z-axis direction, the second angle adjustment plate is adjustably connected to the dust suction connecting plate around the X-axis direction, the fixed hoop is fixed on the second angle adjustment plate, and the fixed hoop includes two rotatably connected holding rings, and the free ends of the two holding rings are detachably connected for tightening or loosening the dust hood.

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