A laser welding and friction stir welding composite high-strength connection structure

Abstract

The utility model relates to connecting structure technical field, concretely relates to a kind of laser welding and composite high-strength connection structure of friction stir welding, including mounting seat, rotating shaft is arranged in the mounting seat inside, the stirring head is arranged in the rotating shaft bottom, the mounting seat both sides are evenly provided with mounting mechanism, laser emission head is arranged in the mounting mechanism inside, the mounting seat both sides are evenly provided with adjusting structure one, adjusting mechanism two is arranged in the adjusting structure one inside.The utility model is far from adjacent side block by rotating several positioning screw rods two, so that the height of laser emission head can be adjusted according to the descending height of stirring head, the stability of the fixed sliding rod is improved by setting multiple positioning screw rods two, and the strength of the connection between the mounting seat and the laser emission head is improved.

Description

Technical Field

[0001] This utility model relates to the field of connection structure technology, specifically a high-strength connection structure combining laser welding and friction stir welding. Background Technology

[0002] Friction stir welding (FSW) refers to the process of using the heat generated by the friction between a high-speed rotating welding tool and the workpiece to locally melt the materials being welded, thereby welding two workpieces together. In FSW, laser welding is often used as an auxiliary welding method, forming a hybrid welding process combining laser welding and FSW. During welding, the laser preheats the area of ​​the workpiece to be welded, allowing for rapid melting of this area during the FSW welding process, thus improving welding efficiency and reducing wear on the welding tool due to friction. When combining laser welding and FSW, the laser emitter is usually fixed directly on the FSW welding base. However, when welding workpieces of different thicknesses, the lowering height of the FSW welding tool may vary, potentially causing the laser emitted by the laser emitter to become somewhat out of focus, affecting the laser's heating of the workpiece. Utility Model Content

[0003] The purpose of this invention is to provide a high-strength connection structure combining laser welding and friction stir welding to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A high-strength composite connection structure combining laser welding and friction stir welding includes a mounting base. A rotating shaft is rotatably mounted inside the mounting base, and a stirring head is located at the bottom of the rotating shaft. Mounting mechanisms are located on both sides of the mounting base, and laser emitting heads are located inside each mounting mechanism. Adjustment mechanisms are located on both sides of the mounting base, and each adjustment mechanism contains an adjustment mechanism. Each adjustment mechanism includes a connecting frame and a sliding rod. The mounting mechanism is located at the bottom of an adjacent sliding rod. The connecting frame is slidably connected to the sliding rod. Two side blocks are fixedly connected to both sides of the sliding rod. Several positioning screws are screwed onto the top and bottom of the connecting frame. The top surface of the top side block and the bottom surface of the bottom side block are in contact with the ends of adjacent positioning screws, thus positioning the side blocks.

[0006] Furthermore, the side block is fixedly connected to several triangular blocks that are fixedly connected to the sliding rod.

[0007] Furthermore, the top of the connecting frame is rotatably connected to an adjusting screw that is screwed into the sliding rod, and the bottom of the adjusting screw extends into the interior of the connecting frame.

[0008] Furthermore, the mounting mechanism includes mounting plate one, mounting plate two, several L-shaped seats, and several fixing screws;

[0009] A mounting plate is set on one side of the laser emitter head, and a fixing block is fixedly connected to the bottom of the sliding rod;

[0010] Mounting plate two is disposed on the other side of the laser emitting head, and the laser emitting head is located between mounting plate one and mounting plate two;

[0011] Several L-shaped seats are fixedly connected to the mounting plate 1. The ends of the L-shaped seats are provided with insertion slots. A part of the laser emitting head is located between the several L-shaped seats.

[0012] Several fixing screws are provided on the second mounting plate. The fixing screws are screwed into the adjacent insertion slots and pass through the second mounting plate.

[0013] Furthermore, the mounting plate 2 is fixedly connected with a plurality of plug-in seats that are slidably connected to adjacent plug-in slots, and the fixing screws pass through the interior of the adjacent plug-in seats.

[0014] Preferably, connecting seats are fixedly connected to both sides of the connecting frame, and the connecting seats are provided with four abutment surfaces. The adjustment structure includes a fixed frame, the connecting frame is located inside the fixed frame, and the fixed frame is fixedly connected to the mounting base. The fixed frame has two limiting grooves that are slidably connected to adjacent connecting seats. Several inclined blocks are slidably connected inside the limiting grooves. The abutment surfaces are inclined, and the inclined surfaces of the inclined blocks contact the adjacent abutment surfaces. Several positioning screws are screwed to the top and bottom of the fixed frame, and one end of the positioning screw located inside the fixed frame abuts against the adjacent inclined block.

[0015] Furthermore, the fixed frame is rotatably connected to several bidirectional lead screws, which are screwed into two adjacent inclined blocks.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Several positioning screws are screwed together in the connecting frame, allowing the laser emitter to be mounted on the mounting mechanism. The mounting base supports the laser emitter and the mounting mechanism through adjusting structure one and adjusting mechanism two, thus connecting the laser emitter to the mounting base and forming a composite connection of laser welding and friction stir welding. When welding workpieces of different thicknesses, several positioning screws can be rotated to move the ends of the positioning screws away from the adjacent side blocks. Then, according to the descent height of the stirring head, the sliding rod can be moved up and down within the connecting frame to adjust the height of the laser emitter. After adjustment, the positioning screws can be rotated in the opposite direction to make the ends of the positioning screws abut against the corresponding side blocks. The sliding rod is repositioned by the several positioning screws, limiting the position of the laser emitter. By setting multiple positioning screws, the stability of the sliding rod fixation is improved, and the strength of the connection between the mounting base and the laser emitter is enhanced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-strength connection structure combining laser welding and friction stir welding according to this utility model.

[0019] Figure 2 This is a schematic diagram of the installation mechanism structure in this utility model;

[0020] Figure 3 This is a schematic diagram of the L-shaped seat structure in this utility model;

[0021] Figure 4 This is a schematic diagram of the adjustment structure one and adjustment mechanism two in this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the limiting groove in this utility model;

[0023] Figure 6 This is a schematic diagram of the internal structure of the adjustment mechanism 2 in this utility model.

[0024] In the diagram: 10. Mounting base; 11. Rotating shaft; 12. Stirring head; 20. Laser emitting head; 30. Mounting mechanism; 31. Mounting plate one; 311. Fixing block; 32. Mounting plate two; 33. L-shaped seat; 331. Insertion groove; 34. Fixing screw; 35. Insertion seat; 40. Adjustment structure one; 41. Fixing frame; 42. Limiting groove; 43. Inclined block; 44. Positioning screw one; 45. Bidirectional screw; 50. Adjustment mechanism two; 51. Connecting frame; 52. Sliding rod; 521. Side block; 522. Triangular block; 53. Positioning screw two; 54. Adjusting screw; 60. Connecting seat; 61. Abutment surface. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 In this embodiment of the present invention, a high-strength composite connection structure of laser welding and friction stir welding includes a mounting base 10, a rotating shaft 11 rotatably mounted inside the mounting base 10, a stirring head 12 mounted at the bottom of the rotating shaft 11, mounting mechanisms 30 on both sides of the mounting base 10, laser emitting heads 20 mounted inside the mounting mechanisms 30, and adjustment mechanisms 40 on both sides of the mounting base 10. Adjustment mechanisms 50 are mounted inside adjustment mechanisms 40, each adjustment mechanism 50 including a connecting frame 51 and a sliding rod 52. Mechanism 30 is located at the bottom of the adjacent sliding rod 52. The connecting frame 51 is slidably connected to the sliding rod 52. Two side blocks 521 are fixedly connected to both sides of the sliding rod 52. Several triangular blocks 522 are fixedly connected to the side blocks 521 and are fixedly connected to the sliding rod 52. Several positioning screws 53 are screwed to the top and bottom of the connecting frame 51. The top surface of the top side block 521 and the bottom surface of the bottom side block 521 are in contact with the ends of the adjacent positioning screws 53. The side blocks 521 are positioned by the positioning screws 53.

[0027] Specifically, the laser emitter 20 can be mounted on the mounting mechanism 30 via the mounting mechanism 30, the first adjustment mechanism 40, and the second adjustment mechanism 50. The mounting base 10 can support the laser emitter 20 and the mounting mechanism 30 via the first adjustment mechanism 40 and the second adjustment mechanism 50, thereby connecting the laser emitter 20 to the mounting base 10 to form a composite connection of laser welding and friction stir welding. A motor or other drive structure can be installed inside the mounting base 10, driving the rotating shaft 11 to rotate. The mounting base 10 can be placed on the cross slide of the gantry-type friction stir welding equipment. During welding, the mounting base 10 is lowered via the cross slide, and the rotating shaft 11 is rotated by the motor, causing the cross slide to move along the equipment's slide rail, allowing the stirring head 12 to weld the workpiece. Simultaneously, the laser emitter 20 can be connected to a power source via an electrical wire. During welding, the laser emitter 20 emits laser light to heat the workpiece, forming a composite welding process of laser welding and friction stir welding.

[0028] When welding workpieces of different thicknesses, several positioning screws 53 can be rotated to move the ends of the positioning screws 53 away from the adjacent side blocks 521, thereby loosening the side blocks 521. At this time, the sliding rod 52 can be moved up and down within the connecting frame 51 according to the descent distance of the stirring head 12, thereby adjusting the height of the laser emitting head 20 relative to the stirring head 12. After adjustment, the positioning screws 53 can be rotated in the opposite direction to move the ends of the positioning screws 53 towards the side blocks 521, thereby causing the positioning screws 53 to abut against the corresponding side blocks 521 again. The sliding rod 52 is repositioned by several positioning screws 53, limiting the height of the laser emitting head 20 relative to the mounting base 10. The triangular block 522 helps to improve the stability of the side blocks 521, and by setting multiple positioning screws 53, it helps to improve the stability of fixing the sliding rod 52 and improve the strength of the connection between the mounting base 10 and the laser emitting head 20.

[0029] Example 1

[0030] like Figure 6 As shown, in this embodiment, the top of the connecting frame 51 is rotatably connected to an adjusting screw 54 that is screwed into the sliding rod 52, and the bottom of the adjusting screw 54 extends into the interior of the connecting frame 51.

[0031] In specific implementation, when the positioning screw 53 is rotated to move it away from the adjacent side block 521, the connecting frame 51 can limit the height of the sliding rod 52 by adjusting the screw 54. At this time, the adjusting screw 54 can be rotated to move the sliding rod 52 up and down along the inside of the connecting frame 51. In this way, during the process of adjusting the height of the laser emitting head 20, the adjusting screw 54 can provide temporary support for the sliding rod 52, the mounting mechanism 30, the laser emitting head 20, etc., and the height of the sliding rod 52 can be finely adjusted by adjusting the screw 54, which is convenient for adjusting the height of the laser emitting head 20.

[0032] like Figure 2 and Figure 3 As shown, in this embodiment, the mounting mechanism 30 includes a first mounting plate 31, a second mounting plate 32, a plurality of L-shaped seats 33, and a plurality of fixing screws 34;

[0033] Mounting plate 1 31 is set on one side of the laser emitter head 20. Mounting plate 1 31 is fixedly connected to a fixing block 311 that is fixedly connected to the bottom of the sliding rod 52. Mounting plate 2 32 is set on the other side of the laser emitter head 20. The laser emitter head 20 is located between mounting plate 1 31 and mounting plate 2 32. Several L-shaped seats 33 are fixedly connected to mounting plate 1 31. The ends of the L-shaped seats 33 are provided with insertion slots 331. A part of the laser emitter head 20 is located between several L-shaped seats 33. The laser emitter head 20 can be framed by several L-shaped seats 33 to position the laser emitter head 20. Several fixing screws 34 are set on mounting plate 2 32. The fixing screws 34 are screwed into the interior of the adjacent insertion slots 331. The fixing screws 34 pass through mounting plate 2 32. Mounting plate 2 32 is fixedly connected to several insertion seats 35 that are slidably connected to the adjacent insertion slots 331. The fixing screws 34 pass through the interior of the adjacent insertion seats 35.

[0034] In specific implementation, the mounting plate 22 can be fixed to the L-shaped seat 33 by fixing screws 34. In this way, the laser emitter 20 can be clamped and fixed by the mounting plate 1 31, the mounting plate 2 32, and several L-shaped seats 33. The mounting plate 1 31 can be fixed to the sliding rod 52 by fixing block 311. In this way, the laser emitter 20 can be fixed to the sliding rod 52 by the mounting mechanism 30. The laser emitter 20 can be fixed to the mounting base 10 by adjusting structure 1 40 and adjusting mechanism 2 50. By inserting the plug 35 into the plug slot 331, the stability of the connection between the mounting plate 2 32 and several L-shaped seats 33 can be improved, thereby fixing the laser emitter 20 more stably in the mounting mechanism 30, which can improve the connection strength of the laser emitter 20.

[0035] Example 2

[0036] Based on Example 1, such as Figure 4 and Figure 5 As shown, in this embodiment, connecting seats 60 are fixedly connected to both sides of the connecting frame 51. The connecting seats 60 are provided with four abutment surfaces 61. The adjustment structure 40 includes a fixed frame 41. The connecting frame 51 is located inside the fixed frame 41. The fixed frame 41 is fixedly connected to the mounting base 10. The fixed frame 41 has two limiting grooves 42 that are slidably connected to the adjacent connecting seats 60. Several inclined blocks 43 are slidably connected inside the limiting grooves 42. The abutment surfaces 61 are inclined. The inclined surfaces of the inclined blocks 43 are in contact with the adjacent abutment surfaces 61. Several positioning screws 44 are screwed to the top and bottom of the fixed frame 41. One end of the positioning screw 44 located inside the fixed frame 41 abuts against the adjacent inclined block 43. Several bidirectional screws 45 are rotatably connected inside the fixed frame 41. The bidirectional screws 45 are screwed to two adjacent inclined blocks 43.

[0037] The inclined block 43 can be positioned by the positioning screw 44 and the bidirectional screw 45. The inclined block 43 can prevent the connecting seat 60 from sliding horizontally in the limiting groove 42. This can limit the position of the connecting frame 51 relative to the fixed frame 41 and fix the connecting frame 51 on the fixed frame 41. This allows the mounting seat 10 to fix the adjusting mechanism 50 through the adjusting structure 40. The laser emitting head 20 is connected to the mounting seat 10 through the mounting mechanism 30, the adjusting structure 40, and the adjusting mechanism 50, so that the mounting seat 10 and the laser emitting head 20 are connected in a composite manner.

[0038] In specific implementation, after adjusting the height of the laser emitting head 20 through the second adjustment mechanism 50, the positioning screw 44 can be rotated to move the end of the positioning screw 44 away from the adjacent inclined block 43. At this time, a bidirectional screw 45 can be rotated to move the two inclined blocks 43 on it in opposite directions, thereby separating the inclined blocks 43 from the corresponding abutting surface 61. This can release the fixation of the connecting seat 60. After the connecting seats 60 in the two limiting grooves 42 are released and fixed in sequence, another bidirectional screw 45 can be rotated in the opposite direction to move the two inclined blocks 43 on it towards each other. At this time, the two inclined blocks 43 can push the connecting seat 60 to move through the corresponding abutting surface 61. The connecting seat 60 can drive the connecting frame 51 to move within the fixed frame 41. The second adjustment mechanism 50 can drive the laser emitting head 20 to move through the mounting mechanism 30. This can adjust the horizontal position of the laser emitting head 20 so that the laser irradiation point is as close as possible to the part of the workpiece to be welded. During the adjustment process, the lasers emitted by the two laser emitting heads 20 are kept staggered to avoid mutual interference between the two laser emitting heads 20.

[0039] After the horizontal position of the laser emitter 20 is adjusted, a bidirectional lead screw 45 can be rotated in the opposite direction to move the two inclined blocks 43 on it towards each other, so that the inclined blocks 43 abut against the corresponding abutment surfaces 61. Thus, the connecting seat 60 is clamped and positioned by the inclined blocks 43. Then, the positioning lead screws 44 can be rotated in the opposite direction to make the positioning lead screws 44 abut against the corresponding inclined blocks 43 again, so that the inclined blocks 43 and the connecting seat 60 are completely positioned. The connecting seats 60 in the two limiting grooves 42 can be fixed in sequence. By the inclined blocks 43 abutting against the abutment surfaces 61, the limiting grooves 42 can provide auxiliary blocking for the connecting seats 60 through the inclined blocks 43. Furthermore, the abutment of adjacent inclined blocks 43 by the positioning lead screws 44 helps to improve the stability of fixing the connecting seats 60, so that the laser emitter 20 is more stably connected to the mounting base 10.

[0040] Two laser emitters 20 can be set on both sides of the stirring head 12, and a corresponding wire feeding structure can be set for each laser emitter 20. One laser emitter 20 and the wire feeding structure are positioned on the rear side of the mounting base 10. After the workpiece is welded by friction stir welding, the weld can be filled by laser welding to further improve the welding effect.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-strength composite connection structure of laser welding and friction stir welding, comprising a mounting base (10), a rotating shaft (11) rotatably disposed inside the mounting base (10), a stirring head (12) disposed at the bottom of the rotating shaft (11), and mounting mechanisms (30) disposed on both sides of the mounting base (10), wherein a laser emitting head (20) is disposed inside the mounting mechanism (30), characterized in that, The mounting base (10) is provided with an adjustment structure (40) on both sides. The adjustment structure (40) is provided with an adjustment mechanism (50) inside. The adjustment mechanism (50) includes a connecting frame (51) and a sliding rod (52). The mounting mechanism (30) is located at the bottom of the adjacent sliding rod (52). The connecting frame (51) is slidably connected to the sliding rod (52). Two side blocks (521) are fixedly connected to both sides of the sliding rod (52). Several positioning screws (53) are screwed to the top and bottom of the connecting frame (51).

2. The high-strength composite connection structure of laser welding and friction stir welding according to claim 1, characterized in that, The top of the connecting frame (51) is rotatably connected to an adjusting screw (54) that is screwed into the sliding rod (52).

3. The high-strength composite connection structure of laser welding and friction stir welding according to claim 1, characterized in that, The side block (521) is fixedly connected to several triangular blocks (522) that are fixedly connected to the sliding rod (52).

4. The high-strength composite connection structure of laser welding and friction stir welding according to any one of claims 1-3, characterized in that, The installation mechanism (30) includes: Mounting plate 1 (31) is set on one side of laser emitter head (20), and mounting plate 1 (31) is fixedly connected to a fixing block (311) that is fixedly connected to the bottom of sliding rod (52). Mounting plate two (32) is set on the other side of the laser emitter head (20); Several L-shaped seats (33) are fixedly connected to the mounting plate (31), and the ends of the L-shaped seats (33) are provided with insertion slots (331). Several fixing screws (34) are all set on the second mounting plate (32), and the fixing screws (34) are screwed into the adjacent insertion slots (331).

5. The high-strength composite connection structure of laser welding and friction stir welding according to claim 4, characterized in that, Mounting plate 2 (32) is fixedly connected to several plug-in seats (35) that are slidably connected to the adjacent plug-in slot (331).

6. The high-strength composite connection structure of laser welding and friction stir welding according to any one of claims 1-3, characterized in that, Connecting seats (60) are fixedly connected to both sides of the connecting frame (51). The connecting seats (60) are provided with four abutting surfaces (61). The adjustment structure (40) includes a fixed frame (41). The fixed frame (41) is fixedly connected to the mounting base (10). The fixed frame (41) has two limiting grooves (42) that are slidably connected to the adjacent connecting seats (60) inside. Several inclined blocks (43) are slidably connected inside the limiting grooves (42). Several positioning screws (44) are screwed to the top and bottom of the fixed frame (41).

7. The high-strength composite connection structure of laser welding and friction stir welding according to claim 6, characterized in that, The fixed frame (41) is internally connected to several bidirectional lead screws (45), which are screwed into two adjacent inclined blocks (43).

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