Laser hybrid welding equipment for dissimilar metal connection

Abstract

The invention discloses laser hybrid welding equipment for dissimilar metal connection, and relates to the technical field of laser welding equipment. Comprising a laser welding head, a mounting pipe is fixed to the lower end of the laser welding head, a laser gun barrel is connected to the inner side of the mounting pipe, a square pipe is mounted in a groove in the outer side of the mounting pipe, first sliding grooves are formed in the two sides of the square pipe, a mounting sliding strip is connected with an adapter pipe through a swing assembly, and wire feeding pipes are fixed to the upper end and the lower end of the adapter pipe; the lower end of the multi-axis welding table is connected with a laser cabinet, and a water cooling machine is arranged on the left side of the laser cabinet. The adjusting assembly is arranged between the mounting sliding strip and the square tube; through cooperation of the installation sliding strip, the adapter pipe, the swing assembly and the adjusting assembly, the swing filling welding effect on welding seams of different sizes is achieved. And through cooperation of the swing assembly, the adapter pipe and the wire feeding assembly, the effect of continuously increasing wire feeding during swing filling welding is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding equipment, in particular to laser composite welding equipment for connecting dissimilar metals. Background Art

[0002] Laser hybrid welding equipment for dissimilar metal joining is an advanced welding equipment specially used for joining different kinds of metal materials. This technology combines the advantages of laser welding and other welding methods to achieve more efficient and high-quality welding results. It is widely used in the aerospace industry, energy industry, automobile manufacturing industry and electronics industry.

[0003] However, in actual use, the existing laser composite welding equipment uses a multi-axis welding platform in conjunction with a laser welding gun to swing and fill the larger gaps between two substrates. However, when the movable spacing around the laser gun head is small, it is more difficult to swing and weld after the laser gun head and the wire feeding gun head are inserted into the weld position. During welding, it is necessary to fill the weld position multiple times, which makes it inconvenient for the existing composite welding platform equipment to complete the fill welding by swinging the wire feeding gun head. On the other hand, the welding wire in the existing wire feeding gun head is fed at a relative speed by a wire feeder, and when the wire feeding gun head swings and cooperates with the laser gun head for fill welding, the different swing amplitudes of the wire feeding gun head are likely to increase the friction between the welding wire and the pipe wall, and the wire feeding speed changes. The weld flatness after welding is poor, and it is necessary to synchronize and optimize the swinging wire feeding gun head. Summary of the invention

[0004] The purpose of the present invention is to provide a laser composite welding device for connecting dissimilar metals to solve the problems raised in the above-mentioned background technology that make it inconvenient for existing composite welding platform equipment to complete caulking welding by swinging the wire feeding gun head, and the different swing amplitudes of the wire feeding gun head easily lead to increased friction between the welding wire and the pipe wall, changes in the wire feeding speed, and poor weld flatness after welding. The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser hybrid welding device for connecting dissimilar metals, comprising a laser welding head, a mounting tube is fixed at the lower end of the laser welding head, a laser gun barrel is connected to the inner side of the mounting tube, a square tube is installed in the groove outside the mounting tube, a No. 1 slide groove is provided on both sides of the square tube, a mounting slide bar is slidably connected to the No. 1 slide groove, the mounting slide bar is connected to a transfer tube through a swing assembly, wire feeding tubes are fixed to the upper and lower ends of the transfer tube, a multi-axis welding table is connected to the rear side of the laser welding head, a laser cabinet is connected to the lower end of the multi-axis welding table, and a water cooler is arranged on the left side of the laser cabinet; An adjusting component, the adjusting component is arranged between the mounting slide bar and the square tube, and the adjusting component is used to adjust the swing amplitude of the swing component; Wire feeding assembly, the upper and lower groups of wire feeding assemblies are arranged between the mounting slide bar and the adapter tube, and the wire feeding assembly is used for adjusting the welding wire.

[0006] Preferably, a laser, a central control computer and a wire feeder are arranged in the laser cabinet, and the water cooler and the laser, the central control computer and the wire feeder in the laser cabinet are connected to the laser welding head through optical fibers, cables and pipelines.

[0007] Preferably, the swing assembly includes a slider and an electromagnet, and the slider and the electromagnet are slidably arranged on the inner side of the mounting slide bar. The slider is connected to the electromagnet through springs on both sides. The inner side of the slider is connected to the transfer tube. The electromagnets on both sides are connected to a controller through lines, and the controller is installed on the inner wall of the square tube.

[0008] Preferably, the controller controls the electromagnets on both sides to be energized alternately.

[0009] Preferably, the adjustment component includes a first rack and a second slide groove, the first rack is fixed to the outside of the mounting slide bar through an inner protrusion, the outer side of the first rack is meshed with a tooth column, and the tooth column is installed in the central opening on the outer side of the square tube through rotation of a motor, and the second slide groove is opened on an inner side wall of the square tube, and the second slide groove is slidably provided with a slide column, and the outer end of the slide column is installed on the inner wall of the electromagnet.

[0010] Preferably, the No. 2 slide groove is opened with an inclined surface, and the inclined surface of the No. 2 slide groove is used for adjusting and limiting the position of the electromagnet, and the No. 2 slide groove is interconnected with the No. 1 slide groove.

[0011] Preferably, the upper and lower groups of wire feeding assemblies include two rollers, and the two rollers are arranged to rotate laterally and are installed in the inner cavity of the transfer tube. Two mutually meshing No. 1 gears are installed at the outward ends of the two rollers, and the outer end of the No. 1 gear on one side is connected to the No. 2 gear through a bearing, and the outer end of the No. 2 gear is meshed with a second rack, and the second rack is fixed to the upper and lower ends of the mounting slide.

[0012] Preferably, the upper and lower groups of wire feeding assemblies are arranged in mirror image relation, the inner side of the No. 2 gear is connected to the No. 1 gear through a ratchet group, and the upper and lower ratchet groups are arranged in opposite directions.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an installation slide bar, a transfer tube and a swing assembly. The controller controls the electromagnet to be energized in an alternate manner, so that the slider is affected by the magnetic force to slide back and forth in the installation slide bar, and synchronously drives the transfer tube and the wire feeding tube to slide, so that the wire feeding tube performs swing wire feeding, and the laser welding head can still perform swing filling welding of a larger weld seam when the movable spacing around the weld seam is small. At the same time, in conjunction with the adjustment component, when relative swing filling welding is performed on welds of different sizes, after starting the gear column motor, the position of the first rack is adjusted downward or upward, and the sliding distance between the two electromagnets is adjusted through the cooperation of the No. 2 slide groove and the slide column, so that when the position of the first rack is adjusted downward, the slide column drives the two electromagnets to move relatively and adjust the position, the sliding distance of the slider between the two electromagnets is reduced, and the swing amplitude of the transfer tube and the wire feeding tube driven by the slider becomes smaller. Conversely, when the position of the first rack is adjusted upward, the slider drives the swing amplitude of the transfer tube and the wire feeding tube to increase, thereby completing the swing filling welding of welds of different sizes and enhancing the adaptability of swing welding.

[0014] The present invention, by setting a swing component, a transfer tube and a wire feeding component, when swing filling welding is performed, when the slider drives the transfer tube to slide back and forth, the No. 2 gear moves synchronously in the process of moving to one side, and rotates by meshing with the second rack, and the rotating No. 2 gear drives the No. 1 gear and the roller to rotate, and at the same time cooperates with the meshing of two No. 1 gears in one group to increase the wire feeding speed of the welding wire, and then cooperates with the ratchet group in the No. 2 gear and another group of swing components arranged in a mirror image to complete continuous wire feeding during swing filling welding, thereby reducing the problem of reduced wire feeding speed caused by increased friction between the welding wire and the wire feeding tube due to swinging, and further optimizing the welding process during swing filling welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the laser welding head and the mounting tube structure of the present invention; Figure 2 This is a schematic diagram of the installation tube, laser gun tube and square tube structure of the present invention; Figure 3 This is a schematic diagram of the disassembly structure of the installation tube, laser gun tube and square tube of the present invention; Figure 4 It is a schematic diagram of the cross-section of the square tube of the present invention, the installation slide bar, the transfer tube and the wire feeding tube structure; Figure 5 This is a schematic diagram of the disassembly structure of the slide bar, the transfer tube and the wire feeding tube installed in the present invention; Figure 6 for Figure 5 The enlarged schematic diagram at A in the middle; Figure 7 This is a schematic diagram of the structure of the slide bar, the transfer tube, the swing assembly and the adjustment assembly installed in the present invention; Figure 8This is a schematic diagram of the disassembled structure of the slide bar, the transfer tube, the swing assembly and the adjustment assembly installed in the present invention; Fig. 9 for Figure 8 The enlarged schematic diagram of point B in the middle; Fig.10 It is a schematic diagram of the overall structure of the present invention.

[0016] In the figure: 1. Laser welding head; 2. Mounting tube; 3. Laser gun barrel; 5. Square tube; 6. No. 1 slide; 7. Mounting slide; 8. Transfer tube; 9. Wire feeding tube; 10. Swing assembly; 101. Slider; 102. Electromagnet; 103. Controller; 11. Adjustment assembly; 111. First rack; 112. Gear column; 113. No. 2 slide; 114. Slide column; 12. Wire feeding assembly; 121. Roller; 122. No. 1 gear; 123. No. 2 gear; 124. Second rack; 13. Multi-axis welding table; 14. Laser cabinet; 15. Water cooler. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1 See also Figure 1-Figure 10 The present invention provides a technical solution: a laser composite welding device for connecting dissimilar metals, comprising a laser welding head 1, a mounting tube 2 is fixed at the lower end of the laser welding head 1, a laser gun tube 3 is connected to the inner side of the mounting tube 2, a square tube 5 is installed in the groove outside the mounting tube 2, a No. 1 slide groove 6 is provided on both sides of the square tube 5, a mounting slide bar 7 is slidably connected to the No. 1 slide groove 6, the mounting slide bar 7 is connected to the transfer tube 8 through a swing component 10, the swing component 10 comprises a slider 101 and an electromagnet 102, the slider 101 and the electromagnet 102 are slidably arranged on the inner side of the mounting slide bar 7, the slider 101 is connected to the electromagnet 102 through springs on both sides, and the slider 10 1 is connected to the transfer tube 8 on the inner side, the electromagnets 102 on both sides are connected to the controller 103 through the line, the controller 103 is installed on the inner wall of the square tube 5, and the controller 103 alternately controls the electromagnets 102 on both sides to be energized. The upper and lower ends of the transfer tube 8 are fixed with wire feeding tubes 9. The rear side of the laser welding head 1 is connected to a multi-axis welding table 13, and the lower end of the multi-axis welding table 13 is connected to a laser cabinet 14. The laser cabinet 14 is provided with a laser, a central control computer and a wire feeder. The water cooler 15 and the laser, the central control computer and the wire feeder in the laser cabinet 14 are connected to the laser welding head 1 through optical fibers, cables and pipelines. The water cooler 15 is provided on the left side of the laser cabinet 14; The adjusting assembly 11 is arranged between the mounting slide bar 7 and the square tube 5. The adjusting assembly 11 comprises a first rack 111 and a second slide groove 113. The first rack 111 is fixed to the outer side of the mounting slide bar 7 through an inner protrusion. A tooth column 112 is meshed on the outer side of the first rack 111. The tooth column 112 is installed in the central opening on the outer side of the square tube 5 by a motor rotation. The second slide groove 113 is arranged on an inner side wall of the square tube 5. The second slide groove 113 is arranged on an inclined surface. The inclined surface of the second slide groove 113 is used for position adjustment and limit of the electromagnet 102. The second slide groove 113 is interconnected with the first slide groove 6. The second slide groove 113 is slidably provided with a slide column 114. The outer end of the slide column 114 is installed on the inner side wall of the electromagnet 102. The adjusting assembly 11 is used to adjust the swing amplitude of the swing assembly 10. The upper and lower sets of wire feeding assemblies 12 are arranged between the mounting slide bar 7 and the transfer tube 8. The wire feeding assembly 12 is used for adjusting the welding wire. When welding seams of different sizes are relatively swung and filled, by setting the installation slide bar 7, the transfer tube 8 and the swing assembly 10, the controller 103 controls the electromagnet 102 to be energized by alternately controlling the slider 101 to slide back and forth in the installation slide bar 7 under the influence of magnetic force, and synchronously drives the transfer tube 8 and the wire feeding tube 9 to slide, so that the wire feeding tube 9 performs swing wire feeding, and then after starting the tooth column 112 motor, the position of the first rack 111 is adjusted downward or upward, and the sliding distance between the two electromagnets 102 is adjusted by the No. 2 slide groove 113 and the slide column 114. When the position of the first rack 111 is adjusted downward, the slide column 114 drives the two electromagnets 102 to move relative to adjust the position, the sliding distance between the slider 101 and the two electromagnets 102 is reduced, and the slider 101 drives the transfer tube 8 and the wire feeding tube 9 to swing less. On the contrary, when the position of the first rack 111 is adjusted upward, the slider 101 drives the transfer tube 8 and the wire feeding tube 9 to swing more, thereby completing the swing filling welding of welds of different sizes.

[0019] Embodiment 1 Based on the above, please refer to Figure 7-Figure 9 The upper and lower wire feeding assemblies 12 include two rollers 121, which are arranged to rotate transversely and installed in the inner cavity of the transfer tube 8. Two mutually meshing No. 1 gears 122 are installed at the outer ends of the two rollers 121. The outer end of the No. 1 gear 122 on one side is connected to the No. 2 gear 123 through a bearing. The upper and lower wire feeding assemblies 12 are mirror-imaged relative to each other. The inner side of the No. 2 gear 123 is connected to the No. 1 gear 122 through a ratchet group. The upper and lower ratchet groups are arranged in opposite directions. The outer end of the No. 2 gear 123 is meshed with a second rack 124, and the second rack 124 is fixed to the upper and lower ends of the mounting slide 7; During the swing welding process, when the transfer tube 8 drives the second gear 123 to slide to one side through a group of rollers 121 above, the second gear 123 starts to rotate due to the engagement with the second rack 124 during the movement, and synchronously drives the first gear 122 and the roller 121 on one side to rotate through the ratchet group in the second rack 124. When the first gear 122 on one side rotates, it drives the meshing first gear 122 and the roller 121 on the other side to rotate in the opposite direction, thereby increasing the wire feeding speed of the welding wire in the wire feeding tube 9.

[0020] Working principle: When using the laser composite welding equipment for connecting dissimilar metals, first place the substrate to be welded on the multi-axis welding table 13 and clamp it to facilitate subsequent welding. Then turn on the central control computer in the laser cabinet 14, and cooperate with the scanning equipment controlled by the central control computer to scan and locate the weld between the two substrates. Then adjust the laser and wire feeder parameters accordingly through the central control computer. Before welding, set the welding route on the central control computer, and turn on the water cooler 15 to start welding the substrate. When the welding gap of dissimilar metal substrates is large and the movable gap around the welding gap is small and needs swing filling welding, the operator turns on the gear column 112 motor according to the gap size and the required swing amplitude, and adjusts the position of the first rack 111 upward or downward. When the first rack 111 is adjusted downward, the first rack 111 drives the installation slide bar 7 to move downward in the No. 1 slide groove 6. When the installation slide bar 7 moves downward, the two electromagnets 102 synchronously drive the slide column 114 to move downward in the No. 2 slide groove 113. When the slide column 114 moves downward, because the No. 2 slide groove 113 is gradually tilted, the slide column 114 drives the two electromagnets 102 to move relatively in the installation slide bar 7 to adjust the position, so that the two The distance between the two electromagnets 102 and the slider 101 is reduced. At this time, during the swing welding process, when the controller 103 alternately energizes the two electromagnets 102, the slider 101 is affected by the magnetic force, and the spacing of the reciprocating sliding in the installation slide bar 7 becomes smaller, so that the slider 101 drives the transfer tube 8 and the wire feeding tube 9 to swing smaller. On the contrary, when the first rack 111 is adjusted upward, the two electromagnets 102 move the adjustment positions in the installation slide bar 7 in the opposite direction, so that the distance between the two electromagnets 102 and the slider 101 increases, and the spacing of the reciprocating sliding of the slider 101 in the installation slide bar 7 increases, and the slider 101 drives the transfer tube 8 and the wire feeding tube 9 to swing larger, and the swing filling welding is completed; During the above-mentioned swing welding process, when the transfer tube 8 drives the No. 2 gear 123 to slide to one side through the upper group of rollers 121, the No. 2 gear 123 starts to rotate due to the engagement with the second rack 124 during the movement, and synchronously drives the No. 1 gear 122 and the roller 121 on one side to rotate through the ratchet group in the second rack 124. When the No. 1 gear 122 on one side rotates, it drives the meshing No. 1 gear 122 and the roller 121 on the other side to rotate in the opposite direction, thereby increasing the wire feeding speed of the welding wire in the wire feeding tube 9. When the upper No. 2 gear 123 slides to the other side, the No. 2 gear 123 no longer drives the No. 1 gear 122 to rotate due to the ratchet group. At this time, the mirror-image lower wire feeding assembly 12 repeats the above process, and during the swing welding process, the wire feeding speed of the welding wire in the wire feeding tube 9 is continuously increased.

[0021] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser hybrid welding device for joining dissimilar metals, characterized in that: It comprises a laser welding head (1), a mounting tube (2) being fixed at the lower end of the laser welding head (1), a laser gun tube (3) being connected to the inner side of the mounting tube (2), a square tube (5) being installed in a groove on the outer side of the mounting tube (2), a No. 1 slide groove (6) being provided on both sides of the square tube (5), a mounting slide bar (7) being slidably connected to the No. 1 slide groove (6), the mounting slide bar (7) being connected to a transfer tube (8) via a swinging assembly (10), a wire feeding tube (9) being fixed to the upper and lower ends of the transfer tube (8), a multi-axis welding table (13) being connected to the rear side of the laser welding head (1), a laser cabinet (14) being connected to the lower end of the multi-axis welding table (13), and a water cooler (15) being arranged on the left side of the laser cabinet (14); an adjusting component (11), the adjusting component (11) being arranged between the mounting slide bar (7) and the square tube (5), the adjusting component (11) being used to adjust the swing amplitude of the swing component (10); A wire feeding assembly (12), wherein the upper and lower groups of the wire feeding assemblies (12) are arranged between the mounting slide bar (7) and the transfer tube (8), and the wire feeding assemblies (12) are used for adjusting the welding wire.

2. The laser hybrid welding equipment for joining dissimilar metals according to claim 1, characterized in that: The laser cabinet (14) is provided with a laser, a central control computer and a wire feeder. The water cooler (15) and the laser, the central control computer and the wire feeder in the laser cabinet (14) are connected to the laser welding head (1) via optical fibers, cables and pipelines.

3. The laser hybrid welding equipment for joining dissimilar metals according to claim 2, characterized in that: The swing assembly (10) comprises a slider (101) and an electromagnet (102), wherein the slider (101) and the electromagnet (102) are slidably arranged on the inner side of the mounting slide bar (7), the slider (101) is connected to the electromagnet (102) via springs on both sides, the inner side of the slider (101) is connected to a transfer tube (8), and the electromagnets (102) on both sides are connected to a controller (103) via lines, and the controller (103) is mounted on the inner side wall of the square tube (5).

4. The laser hybrid welding equipment for joining dissimilar metals according to claim 3, characterized in that: The controller (103) alternately controls the electromagnets (102) on both sides to be energized.

5. The laser hybrid welding equipment for joining dissimilar metals according to claim 1, characterized in that: The adjustment component (11) comprises a first rack (111) and a second slide groove (113), wherein the first rack (111) is fixed to the outside of the mounting slide bar (7) via an inner protrusion, a tooth column (112) is meshed on the outside of the first rack (111), and the tooth column (112) is mounted in a central opening on the outside of the square tube (5) by means of a motor, and the second slide groove (113) is provided on an inner side wall of the square tube (5), and a slide column (114) is slidably arranged on the second slide groove (113), and the outer end of the slide column (114) is mounted on the inner side wall of the electromagnet (102).

6. The laser hybrid welding equipment for joining dissimilar metals according to claim 5, characterized in that: The second slide groove (113) is opened with an inclined surface, and the inclined surface of the second slide groove (113) is used for position adjustment and limiting of the electromagnet (102), and the second slide groove (113) and the first slide groove (6) are interconnected.

7. The laser hybrid welding equipment for joining dissimilar metals according to claim 6, characterized in that: The upper and lower groups of the wire feeding assemblies (12) include two rollers (121), which are arranged to rotate laterally and are installed in the inner cavity of the transfer tube (8). Two mutually meshing No. 1 gears (122) are installed at the outward ends of the two rollers (121), and the outer ends of the No. 1 gears (122) on one side are connected to the No. 2 gear (123) through bearings, and the outer ends of the No. 2 gears (123) are meshed with a second rack (124), and the second rack (124) is fixed to the upper and lower ends of the mounting slide bar (7).

8. The laser hybrid welding equipment for joining dissimilar metals according to claim 7, characterized in that: The upper and lower groups of wire feeding assemblies (12) are arranged in mirror image relation, the inner side of the second gear (123) is connected to the first gear (122) via a ratchet group, and the upper and lower ratchet groups are arranged in opposite directions.

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