Double-ultrasonic self-adaptive auxiliary laser welding device

Abstract

A double-ultrasonic self-adaptive auxiliary laser welding device comprises a mounting support and a laser welding gun mounted in the middle of the mounting support. A front-end ultrasonic vibration head and a rear-end ultrasonic vibration head which move synchronously with the laser welding gun are mounted on the mounting bracket and are respectively arranged at the front end and the rear end of the laser welding gun in the welding direction; an adjusting assembly used for adjusting the positions of the front-end ultrasonic vibration head and the rear-end ultrasonic vibration head is installed on the installation support. The adjusting assembly comprises a height adjuster and an angle adjuster connected to the end of the height adjuster. Compared with the prior art, the height and angle of the front-end ultrasonic vibration head and the rear-end ultrasonic vibration head can be adjusted through the adjusting assembly, self-adaptive adjustment of vibration pressure can be achieved according to different welded materials, the stirring effect on a molten pool is improved, and meanwhile the ultrasonic vibration heads can be prevented from scratching the surface of a weld joint.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser welding technical field, concretely relates to a double ultrasonic self -adaptation auxiliary laser welding device. BACKGROUND

[0002] Laser welding is a kind of method that the heat generated by the focused laser beam as energy bombardment welding piece, because laser has refraction, focusing and other optical properties, make laser welding very suitable for micro parts and poor accessibility site welding, laser welding also has low heat input, small welding deformation, not affected by electromagnetic field and other characteristics.

[0003] With the laser cost reduces year by year, laser welding obtains a large number of applications in industrial production, especially in recent years, high-power laser welding application is also more and more widely, with the laser power continuously improves, especially above ten thousand watt level laser high-efficiency welding develops rapidly, high-energy beam laser forms narrow and deep weld seam form when deep penetration welding, this kind of weld has high efficiency, low damage, low deformation and other outstanding advantages, but in the welding defect control, there are also outstanding problems.

[0004] High-energy beam laser exists welding porosity, inclusion, incomplete fusion, crack and other problems in the welding process, especially porosity, crack and other problems seriously limit the popularization and application of high-energy beam laser welding method.

[0005] Chinese patent number CN119035771A discloses a kind of laser welding equipment based on ultrasonic wave and use method, wherein laser welding equipment includes welding table, laser welding unit and ultrasonic vibration unit, welding table top has welding station, laser welding unit can emit laser beam to carry out welding to be welded piece, laser welding unit is located at welding table and located above welding station, laser welding unit can be moved relative to welding table to carry out welding to be welded piece along joint seam;Ultrasonic vibration unit includes ultrasonic transducer located in the side of welding table, amplitude bar connected to ultrasonic transducer and vibration head connected to amplitude bar.

[0006] The laser welding unit and ultrasonic vibration unit of the above-mentioned laser welding equipment are independently arranged, and due to the certain distance between the laser welding unit and the ultrasonic vibration unit, there is a risk of scratching the weld surface during welding due to excessive vibration pressure. At the same time, due to the different physical properties of high-temperature liquid of different welded metals, different vibration pressures are required. The above-mentioned laser welding equipment is difficult to adjust the ultrasonic vibration unit according to different welded metals, and it is also difficult to achieve sufficient and uniform vibration and stirring of the molten pool by the ultrasonic vibration unit in time. The inhibition effect on welding defects is not obvious enough and not stable enough. UTILITY MODEL CONTENTS

[0007] The utility model discloses in order to overcome the defects in the prior art, provide a good welding effect, applicable to different welding metal welding's double ultrasonic self -adaptation auxiliary laser welding device.

[0008] In order to realize the utility model purposes, the utility model adopts following technical scheme: a double ultrasonic self -adaptation auxiliary laser welding device, including installation support and the laser welding torch of installing in the middle part of installation support, the front end ultrasonic vibration head and rear end ultrasonic vibration head of synchronous movement with laser welding torch are installed on the installation support, and the front end ultrasonic vibration head and rear end ultrasonic vibration head are arranged respectively in the front and rear of laser welding torch welding direction, the adjusting assembly for adjusting the position of front end ultrasonic vibration head and rear end ultrasonic vibration head is installed on the installation support, and adjusting assembly includes height adjuster and the angle adjuster of connecting in the end of height adjuster.

[0009] As a preferred scheme of the utility model, the installation support includes support main part and the installation support board formed in the opposite two ends of support main part, and the laser welding torch is installed in the middle part of support main part, and the adjusting assembly is installed in the connecting place of installation support board and support main part, and the back of support main part is equipped with the drive plate for driving the integral movement of installation support.

[0010] As a preferred scheme of the utility model, the height adjuster includes the first support seat and second support seat of connecting on installation support board, and the slider is equipped between the first support seat and second support seat and is in abutment with installation support board, and the drive screw for driving the lifting of slider is installed on support main part.

[0011] As a preferred scheme of the utility model, the support rod of synchronous lifting with slider is connected on the slider, and the guide seat for guiding the lifting of support rod is installed on the bottom of support main part, and the pressure sensor for identifying the vibration amplitude of ultrasonic vibration head is installed on the bottom of support rod, and the angle adjuster is installed on the bottom of pressure sensor.

[0012] As a preferred scheme of the utility model, the drive motor for controlling drive screw is installed on support main part, and the speed reducer for being connected with drive screw is equipped on the output end of drive motor.

[0013] As a preferred scheme of the utility model, the angle adjuster includes connecting rod and the adjusting seat in the bottom of connecting rod, and the rotating clamp for adjusting the angle of front end ultrasonic vibration head or rear end ultrasonic vibration head is installed in adjusting seat, and connecting rod is connected with pressure sensor.

[0014] As a preferred scheme of the utility model, the front end ultrasonic vibration head or the rear end ultrasonic vibration head end portion is sleeved with a hoop, the hoop is formed with an adjusting shaft for controlling the rotation angle of the front end ultrasonic vibration head or the rear end ultrasonic vibration head, the rotating hoop is a hollow frame structure, the rotating hoop is formed with a first clamping seat and a second clamping seat for clamping the adjusting shaft, and the rotating hoop is provided with a locking bolt for pressing the first clamping seat and the second clamping seat to the adjusting shaft, the first clamping seat is formed with a smooth through hole, and the second clamping seat is formed with a threaded hole for screwing the locking bolt.

[0015] As a preferred scheme of the utility model, the mounting support plate is provided with a protective gas assembly corresponding to the rear end ultrasonic vibration head, the protective gas assembly comprises a protective gas pipe connected to the bottom of the fixed rod, the mounting support plate is provided with a clamping seat for mounting the fixed rod, and the bottom of the fixed rod is provided with an angle adjusting seat for adjusting the angle of the protective gas pipe.

[0016] As a preferred scheme of the utility model, the angle adjusting seat comprises a holding member sleeved on the end portion of the protective gas pipe and an adjusting sleeve rotatably connected to the bottom of the fixed rod, the holding member is formed with an angle adjusting head rotatable along the radial direction of the adjusting sleeve, the angle adjusting head is inserted into the adjusting sleeve, the end portion of the angle adjusting head is formed with a thickened head, the adjusting sleeve is provided with an abutting member for locking the rotation angle of the angle adjusting head, the abutting member abuts at the connection between the angle adjusting head and the thickened head, and the end portion of the adjusting sleeve is provided with a locking member for locking the axial angle of the adjusting sleeve.

[0017] A welding method of a double-ultrasonic self-adaptive auxiliary laser welding device, based on the double-ultrasonic self-adaptive auxiliary laser welding device, characterized in that it comprises the following steps:

[0018] Step A: mounting a mounting support on a welding robot, and sequentially mounting a front end ultrasonic vibration head, a laser welding gun, a rear end ultrasonic vibration head and a protective gas assembly arranged along the welding direction of the welding robot on the mounting support;

[0019] Step B: adjusting the angle position of the front end ultrasonic vibration head and the rear end ultrasonic vibration head to ensure that the front end ultrasonic vibration head and the rear end ultrasonic vibration head correspond to the front edge and the rear edge of the molten pool respectively;

[0020] Step C: controlling the welding robot to weld along the set welding direction under the action of the control system, and in the welding process, the control system receives the vibration pressure collected by the pressure sensor, and adjusts the height of the front end ultrasonic vibration head and the rear end ultrasonic vibration head by comparing the collected vibration pressure with the set pressure.

[0021] Compared with the prior art, the utility model have the advantages that through set up with the front end ultrasonic vibration head and rear end ultrasonic vibration head of synchronous movement of laser welding gun, realize the stirring of the weld pool, thereby be favorable to the overflow of gas in the molten pool, the floating of inclusion, the closure of unmelting, the fusion of crack, and can pass through ultrasonic vibration stirring molten pool, increase the nucleation number in the crystallization process of molten pool, refine the grain, improve the joint organization performance, the height and angle of front end ultrasonic vibration head and rear end ultrasonic vibration head can be adjusted through adjusting assembly, can realize the adaptive adjustment of vibration pressure according to the different of the welded material, improve the stirring effect of molten pool, can also avoid ultrasonic vibration head scratching weld surface simultaneously;

[0022] The front end ultrasonic vibration head and the rear end ultrasonic vibration head correspond to the front edge and the rear edge of the molten pool respectively, so that the stirring effect on the liquid metal of the molten pool is more uniform and more sufficient, thereby more favorably avoiding the generation of welding defects;

[0023] The front end ultrasonic vibration head, the laser welding gun, the protective gas assembly and the rear end ultrasonic vibration head are on the same mounting bracket, ensuring the relative stability of each component during movement;

[0024] Different vibration pressures can be provided for different welded metals, and the vibration pressure of the ultrasonic vibration head can be adaptively adjusted during the welding process. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structure schematic diagram of the utility model;

[0026] Figure 2 It is the front view of the utility model;

[0027] Figure 3 It is the structure schematic diagram of angle adjuster;

[0028] Figure 4 It is the structure schematic diagram of rear end ultrasonic vibration head;

[0029] Figure 5 It is the structure schematic diagram of protective gas assembly;

[0030] Figure 6 It is Figure 5 The partial close-up view of A in the figure;

[0031] Figure 7 It is the principle diagram of the utility model;

[0032] Mounting bracket 1, bracket body 11, mounting support plate 12, drive plate 13, guide seat 14, mounting seat 15, laser welding gun 2, front ultrasonic vibration head 3, rear ultrasonic vibration head 4, hoop 41, adjusting shaft 42, protective gas assembly 5, angle adjusting seat 51, fixing rod 52, protective gas pipe 53, adjusting sleeve 54, locking piece 55, clamping piece 56, angle adjusting head 57, upsetting head 58, abutting piece 59, height adjuster 6, drive motor 61, speed reducer 62, drive screw 63, first support seat 64, guide rod 65, sliding block 66, second support seat 67, support rod 68, angle adjuster 7, connecting rod 71, adjusting seat 72, rotating clamp 73, first clamping seat 74, second clamping seat 75, locking bolt 76, pressure sensor 8. DETAILED DESCRIPTION

[0033] The utility model embodiment will be described in detail below with reference to the drawings.

[0034] As shown in the figure, a double-ultrasonic self-adaptive auxiliary laser welding device comprises a mounting bracket 1 and a laser welding gun 2 mounted in the middle of the mounting bracket 1. Figures 1-7 The mounting bracket 1 is provided with a front ultrasonic vibration head 3 and a rear ultrasonic vibration head 4 that move synchronously with the laser welding gun 2, and the front ultrasonic vibration head 3 and the rear ultrasonic vibration head 4 are respectively arranged at the front and rear ends of the laser welding gun 2 in the welding direction.

[0035] The front ultrasonic vibration head 3 is located at the moving front end of the laser welding gun 2, the rear ultrasonic vibration head 4 is located at the moving rear end of the laser welding gun 2, and the laser welding gun 2 is located between the front ultrasonic vibration head 3 and the rear ultrasonic vibration head 4.

[0036] The front ultrasonic vibration head 3 and the rear ultrasonic vibration head 4 located at the opposite sides of the laser welding gun 2 are both inclinedly arranged towards the direction of the laser welding gun 2, the height adjuster 6 is used for adjusting the height of the front ultrasonic vibration head 3 and the rear ultrasonic vibration head 4, the laser welding gun 2 is vertically arranged, and the angle adjuster 7 is used for adjusting the inclination angle of the front ultrasonic vibration head 3 and the rear ultrasonic vibration head 4.

[0037] The front end ultrasonic vibration head 3, the laser welding gun 2 and the rear end ultrasonic vibration head 4 are installed on the same mounting bracket 1, so that the front end ultrasonic vibration head 3, the laser welding gun 2 and the rear end ultrasonic vibration head 4 can be synchronously moved under the movement of the mounting bracket 1, so that the front end ultrasonic vibration head 3, the laser welding gun 2 and the rear end ultrasonic vibration head 4 are always in a relative position.

[0038] The mounting bracket 1 comprises a bracket body 11 and mounting plates 12 formed at opposite ends of the bracket body 11, the laser welding gun 2 is installed in the middle of the bracket body 11, the adjusting assembly is installed at the connection between the mounting plate 12 and the bracket body 11, and the bracket body 11 is provided with a driving plate 13 at the back for driving the overall movement of the mounting bracket 1.

[0039] The mounting plates 12 are vertically arranged at opposite ends of the mounting bracket 1, and the driving plate 13 is connected to the welding robot, so that the driving plate 13 and the mounting bracket 1 are driven to move by the welding robot.

[0040] The height adjuster 6 comprises first and second support seats 64 and 67 connected to the mounting plates 12, a sliding block 66 abutting against the mounting plates 12 is arranged between the first and second support seats 64 and 67, and a driving screw 63 for driving the sliding block 66 to ascend and descend is installed on the bracket body 11.

[0041] The first and second support seats 64 and 67 are horizontally arranged, the sliding block 66 always abuts against the side surface of the mounting plate 12, and support bearings connected with the driving screw 63 are arranged in the first and second support seats 64 and 67, so that the driving screw 63 and the sliding block 66 form a screw and sliding block structure under the rotation of the driving screw 63, thereby realizing the ascending and descending of the sliding block 66 along the height direction of the mounting plate 12 under the rotation of the driving screw 63, and controlling the height of the sliding block 66.

[0042] A guide rod 65 passing through the sliding block 66 is arranged between the first and second support seats 64 and 67, so that the rotation of the sliding block 66 is prevented under the action of the guide rod 65, and the ascending and descending of the sliding block 66 along the height direction of the guide rod 65 is ensured.

[0043] The sliding block 66 is connected with a support rod 68 ascending and descending synchronously with the sliding block 66, a guide seat 14 for guiding the ascending and descending of the support rod 68 is installed at the bottom of the bracket body 11, a pressure sensor 8 for identifying the vibration amplitude of the ultrasonic vibration head is installed at the bottom of the support rod 68, and an angle adjuster 7 is installed at the bottom of the pressure sensor 8.

[0044] The support rod 68 is connected with the sliding block 66 at the top, and passes through the guide seat 14 and the second support seat 67, and is guided and limited in position during lifting under the action of the guide seat 14 and the second support seat 67. The support rod 68 is used for loading the pressure sensor 8, and the height of the pressure sensor 8 is adjusted under the action of the sliding block 66. At the same time, the pressure sensor 8 is lifted, and the lifting of the angle adjuster 7 is also synchronized.

[0045] The driving motor 61 for controlling the driving screw 63 is mounted on the support body 11. The output end of the driving motor 61 is provided with a speed reducer 62 connected with the driving screw 63. The driving motor 61 is fixedly connected to the support body 11 by bolts. The output shaft of the driving motor 61 is reduced in speed under the action of the speed reducer 62, and the reduced speed is transmitted to the driving screw 63, so as to accurately control the driving screw 63.

[0046] The angle adjuster 7 comprises a connecting rod 71 and an adjusting seat 72 at the bottom of the connecting rod 71. The connecting rod 71 is connected with the pressure sensor 8. The adjusting seat 72 is provided with a rotating clamp 73 for adjusting the angle of the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4.

[0047] The end of the rotating clamp 73 is fixedly installed in the middle of the adjusting seat 72 by bolts. The front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4 is rotationally connected to the middle of the rotating clamp 73. The rotating clamp 73 is a hollow frame structure, and the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4 passes through the rotating clamp 73.

[0048] The end of the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4 is sleeved with a clamp 41. The clamp 41 is provided with an adjusting shaft 42 for controlling the rotation angle of the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4. The rotating clamp 73 is a hollow frame structure, and the first clamping seat 74 and the second clamping seat 75 for clamping the adjusting shaft 42 are formed in the rotating clamp 73. The locking bolt 76 for pressing the first clamping seat 74 and the second clamping seat 75 on the adjusting shaft 42 is mounted on the rotating clamp 73. The first clamping seat 74 is provided with a smooth through hole, and the second clamping seat 75 is provided with a threaded hole threaded with the locking bolt 76.

[0049] The clamp 41 is sleeved on the end of the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4, and the clamp 41 is provided with a bolt for locking the clamp 41, so as to ensure the fixed arrangement of the clamp 41 on the end of the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4. The adjusting shaft 42 is arranged along the radial direction of the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4, so that the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4 can be angularly adjusted along the radial direction of the adjusting shaft 42, thereby adjusting the inclination angle between the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4 and the laser welding gun 2.

[0050] The first clamping seat 74 and the second clamping seat 75 are respectively arranged on the upper and lower sides of the adjusting shaft 42, and the locking bolt 76 is installed from top to bottom. After the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4 is rotated to the required angle, the locking bolt 76 is tightened, so that the top of the locking bolt 76 abuts against the first clamping seat 74, thereby realizing the downward pressing of the first clamping seat 74. Meanwhile, the threaded segment of the locking bolt 76 is threadedly connected with the second clamping seat 75, thereby realizing the upward pulling of the second clamping seat 75, so as to realize the locking clamping of the adjusting shaft 42, and ensure the inclination angle of the front ultrasonic vibration head 3 or the rear ultrasonic vibration head 4.

[0051] The mounting plate 12 is provided with the protective gas assembly 5 corresponding to the rear ultrasonic vibration head 4. The protective gas assembly 5 comprises the protective gas pipe 53 connected to the bottom of the fixing rod 52. The mounting plate 12 is provided with a clamping seat for mounting the fixing rod 52. The bottom of the fixing rod 52 is provided with an angle adjusting seat 51 for adjusting the angle of the protective gas pipe 53.

[0052] The mounting plate 12 is provided with the mounting seat 15 for clamping the fixing rod 52. The mounting seat 15 is provided with a clamp for clamping the fixing rod 52, so that the position of the mounting seat 15 for clamping the fixing rod 52 can be adjusted by adjusting the tightness of the clamp.

[0053] The angle adjusting seat 51 comprises the clamping member 56 sleeved on the end of the protective gas pipe 53 and the adjusting sleeve 54 rotatably connected to the bottom of the fixing rod 52. The clamping member 56 is formed with the angle adjusting head 57 rotatable along the radial direction of the adjusting sleeve 54. The angle adjusting head 57 is inserted into the adjusting sleeve 54, and the end of the angle adjusting head 57 is formed with the thickened head 58. The adjusting sleeve 54 is provided with the abutting member 59 for locking the rotation angle of the angle adjusting head 57. The abutting member 59 abuts against the connection position between the angle adjusting head 57 and the thickened head 58. The end of the adjusting sleeve 54 is provided with the locking member 55 for locking the axial angle of the adjusting sleeve 54.

[0054] The adjusting sleeve 54 is arranged along the radial direction of the protection gas pipe 53, and under the rotation of the adjusting sleeve 54 on the fixing rod 52, the angle adjustment of the protection gas pipe 53 along the axial direction can be realized, and when the axial direction angle of the protection gas pipe 53 is adjusted in place, the locking of the axial angle of the protection gas pipe 53 can be realized by tightening the locking part 55.

[0055] Meanwhile, the rotation of the clamping part 56 can be driven by the rotation of the angle adjusting head 57, so as to realize the adjustment of the radial direction angle of the protection gas pipe 53, and the upsetting head 58 is used to support the height of the angle adjusting head 57.

[0056] A welding method of a dual-ultrasonic self-adaptive auxiliary laser welding device, based on the dual-ultrasonic self-adaptive auxiliary laser welding device, comprising the following steps:

[0057] Step A: install the mounting bracket 1 on the welding robot, and sequentially install the front-end ultrasonic vibration head 3, the laser welding gun 2, the rear-end ultrasonic vibration head 4 and the protection gas assembly 5 arranged along the welding direction of the welding robot on the mounting bracket 1.

[0058] The laser welding gun 2 is connected with the laser, and under the action of the laser welding gun 2, the laser generated by the laser is conducted to the surface of the welded metal, and the welded metal is melted to form a molten pool under the action of the laser energy.

[0059] Step B: adjust the angle position of the front-end ultrasonic vibration head 3 and the rear-end ultrasonic vibration head 4 to ensure that the front-end ultrasonic vibration head 3 and the rear-end ultrasonic vibration head 4 correspond to the front edge and the rear edge of the molten pool respectively.

[0060] The protection gas assembly 5 is located at the rear end of the rear-end ultrasonic vibration head 4, and the protection gas assembly 5 is used to conduct inert protective gas to the upper surface of the molten pool, so as to isolate the molten pool and the high-temperature weld from the surrounding air to avoid oxidation.

[0061] Step C: under the action of the control system, the welding robot is controlled to weld along the set welding direction, and in the welding process, the control system receives the vibration pressure collected by the pressure sensor 8, and adjusts the height of the front-end ultrasonic vibration head 3 and the rear-end ultrasonic vibration head 4 by comparing the collected vibration pressure with the set pressure.

[0062] In the welding process, the front-end ultrasonic vibration head 3, the laser welding gun 2, the rear-end ultrasonic vibration head 4 and the protection gas assembly 5 are installed on the same mounting bracket 1, so as to ensure that the front-end ultrasonic vibration head 3, the laser welding gun 2, the rear-end ultrasonic vibration head 4 and the protection gas assembly 5 are always in a synchronous state during the movement along the welding direction in the welding process, and the front-end ultrasonic vibration head 3 and the rear-end ultrasonic vibration head 4 can be adjusted in height under the action of the height adjuster 6.

[0063] The front end ultrasonic vibration head 3 and the rear end ultrasonic vibration head 4 convert the electric signal of the ultrasonic into the mechanical movement signal of the vibration head through the transducer, so that the ultrasonic vibration head performs ultrasonic vibration, the ultrasonic vibration acts on the position of the surface molten pool edge of the welded metal, stirs the molten pool, so that the overflow of the gas in the molten pool, the floating of the inclusion, the closure of the un-melted, the fusion of the crack can be facilitated, and the molten pool can be stirred by the ultrasonic vibration, the nucleation number in the crystallization process of the molten pool is increased, the grain is refined, and the joint structure performance is improved.

[0064] Because the high-temperature liquid physical properties of different welded metals are different, the required vibration pressure is also different, for example, the liquid metal with high viscosity requires relatively large vibration pressure, the liquid metal with small viscosity requires relatively small vibration pressure, in addition, it is also necessary to avoid that the ultrasonic vibration head scratches the weld surface in the welding movement process due to the too large vibration intensity.

[0065] The vibration pressure is set according to different welded metals, the vibration pressure is collected in real time by the pressure sensor 8 installed between the support rod 68 and the connecting rod 71 in the welding process, and is transmitted to the control system, the control system compares with the set pressure, and determines whether the vibration head should be lifted to reduce the vibration pressure or lowered to increase the vibration pressure according to the comparison result, and the control system realizes the lifting and lowering of the vibration head through the control motor.

[0066] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application; therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0067] Although the present document uses the figure reference: mounting bracket 1, bracket body 11, mounting plate 12, drive plate 13, guide seat 14, mounting seat 15, laser welding gun 2, front end ultrasonic vibration head 3, rear end ultrasonic vibration head 4, hoop 41, adjusting shaft 42, protective gas assembly 5, angle adjusting seat 51, fixing rod 52, protective gas pipe 53, adjusting sleeve 54, locking piece 55, clamping piece 56, angle adjusting head 57, upsetting head 58, abutting piece 59, height adjuster 6, drive motor 61, speed reducer 62, drive screw 63, first support seat 64, guide rod 65, sliding block 66, second support seat 67, support rod 68, angle adjuster 7, connecting rod 71, adjusting seat 72, rotating clamp 73, first clamping seat 74, second clamping seat 75, locking bolt 76, pressure sensor 8 and other terms, but it does not exclude the possibility of using other terms. Using these terms is only to facilitate the description and explanation of the essence of the present application; any additional limitation is contrary to the spirit of the present application.

Claims

1. A dual ultrasonic self-adaptive auxiliary laser welding device, comprising a mounting bracket (1) and a laser welding gun (2) mounted in the middle of the mounting bracket (1); characterized in that, The mounting bracket (1) is provided with a front end ultrasonic vibration head (3) and a rear end ultrasonic vibration head (4) which move synchronously with a laser welding gun (2), the front end ultrasonic vibration head (3) and the rear end ultrasonic vibration head (4) are arranged at the front and rear ends of the welding direction of the laser welding gun (2) respectively; the mounting bracket (1) is provided with an adjusting assembly for adjusting the positions of the front end ultrasonic vibration head (3) and the rear end ultrasonic vibration head (4), the adjusting assembly comprises a height adjuster (6) and an angle adjuster (7) connected to the end of the height adjuster (6).

2. A dual ultrasonic self-adaptive assisted laser welding device according to claim 1, wherein, The mounting bracket (1) comprises a bracket main body (11) and mounting plates (12) formed at the opposite ends of the bracket main body (11), the laser welding gun (2) is mounted in the middle of the bracket main body (11), the adjusting assembly is mounted at the connecting position of the mounting plate (12) and the bracket main body (11), and the back of the bracket main body (11) is provided with a driving plate (13) for driving the whole mounting bracket (1) to move.

3. A dual ultrasonic self-adapting assisted laser welding device according to claim 2, wherein, The height adjuster (6) comprises first and second support seats (64, 67) connected to the mounting plate (12), a sliding block (66) is arranged between the first and second support seats (64, 67) and abuts against the mounting plate (12), and a driving screw (63) is mounted on the bracket main body (11) and used for driving the sliding block (66) to lift.

4. A dual ultrasonic self-adapting assisted laser welding device according to claim 3, wherein, The sliding block (66) is connected with a support rod (68) which lifts synchronously with the sliding block (66), a guide seat (14) is mounted at the bottom of the bracket main body (11) and used for guiding the lifting of the support rod (68), and a pressure sensor (8) is mounted at the bottom of the support rod (68) and used for identifying the vibration amplitude of the ultrasonic vibration head.

5. A dual ultrasonic self-adapting assisted laser welding device according to claim 3, wherein, A driving motor (61) is mounted on the bracket main body (11) and used for controlling the driving screw (63), and a speed reducer (62) is arranged at the output end of the driving motor (61) and connected with the driving screw (63).

6. A dual ultrasonic adaptive assisted laser welding device as claimed in claim 4, wherein, The angle adjuster (7) comprises a connecting rod (71) and an adjusting seat (72) arranged at the bottom of the connecting rod (71), the connecting rod (71) is connected with the pressure sensor (8), and a rotating clamp (73) is mounted in the adjusting seat (72) and used for adjusting the angle of the front end ultrasonic vibration head (3) or the rear end ultrasonic vibration head (4).

7. A dual ultrasonic adaptive assisted laser welding device according to claim 6, wherein, A clamp (41) is sleeved at the end of the front end ultrasonic vibration head (3) or the rear end ultrasonic vibration head (4), the clamp (41) is provided with an adjusting shaft (42) used for controlling the rotating angle of the front end ultrasonic vibration head (3) or the rear end ultrasonic vibration head (4), the rotating clamp (73) is a hollow frame structure, the rotating clamp (73) is provided with first and second clamping seats (74, 75) used for clamping the adjusting shaft (42), and a locking bolt (76) is mounted on the rotating clamp (73) and used for pressing the first and second clamping seats (74, 75) against the adjusting shaft (42), the first clamping seat (74) is provided with a smooth through hole, and the second clamping seat (75) is provided with a threaded hole which is screwed with the locking bolt (76).

8. A dual ultrasonic adaptive assisted laser welding device as claimed in claim 2, wherein, The mounting support plate (12) is provided with a shielding gas assembly (5) corresponding to the rear end ultrasonic vibration head (4), the shielding gas assembly (5) comprises a fixed rod (52) and a shielding gas pipe (53) connected to the bottom of the fixed rod (52), the mounting support plate (12) is provided with a clamping seat for mounting the fixed rod (52), and the bottom of the fixed rod (52) is provided with an angle adjusting seat (51) for adjusting the angle of the shielding gas pipe (53).

9. A dual ultrasonic adaptive assisted laser welding device according to claim 8, wherein, The angle adjusting seat (51) comprises a clamping piece (56) sleeved on the end of the shielding gas pipe (53) and an adjusting sleeve (54) rotatably connected to the bottom of the fixed rod (52), the clamping piece (56) is formed with an angle adjusting head (57) rotatable in the radial direction of the adjusting sleeve (54), the angle adjusting head (57) is inserted into the adjusting sleeve (54), the end of the angle adjusting head (57) is formed with a thickened head (58), the adjusting sleeve (54) is provided with an abutting piece (59) for locking the rotation angle of the angle adjusting head (57), the abutting piece (59) abuts at the connection between the angle adjusting head (57) and the thickened head (58), and the end of the adjusting sleeve (54) is provided with a locking piece (55) for locking the axial angle of the adjusting sleeve (54).

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