Aluminum alloy medium plate laser welding device

Abstract

The invention relates to the technical field of laser welding, in particular to an aluminum alloy medium-thickness plate laser welding device which comprises a laser welding machine body used for welding a plurality of aluminum alloy medium-thickness plates at the same time, and a first supporting table and a second supporting table are sequentially arranged at an inlet of the laser welding machine body. The plurality of aluminum alloy medium-thickness plates are placed on the table surface between the first supporting table and the second supporting table; a position adjusting mechanism is arranged on the side, away from the second supporting table, of the first supporting table. According to the laser welding device for the aluminum alloy medium-thickness plates, the distance between the multiple aluminum alloy medium-thickness plates and the positions of the ends can be precisely adjusted, then the distance adjusting mechanism is connected in a matched mode, the gap between the multiple aluminum alloy medium-thickness plates with the adjusted distance is further precisely controlled, and the welding efficiency is improved. And the accuracy of welding seams between the multiple aluminum alloy medium-thickness plates is guaranteed, and accurate welding between the aluminum alloy medium-thickness plates is further achieved.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, in particular to a laser welding device for aluminum alloy medium and thick plates. Background Art

[0002] Aluminum alloy has the advantages of low density, high strength and good corrosion resistance, so it is widely used in the automotive industry, new energy, aerospace and construction industries. At present, laser welding has been widely used in the production and manufacturing of aluminum alloy products. Compared with traditional welding methods, laser welding can provide higher production efficiency, better weld quality, and realize high-precision welding and automation of complex structures. At present, when welding aluminum alloy whole plates in the existing construction industry, multiple aluminum alloy medium and thick plates of a certain length are spliced ​​together, and then the multiple spliced ​​aluminum alloy medium and thick plates are simultaneously welded at multiple welds through a laser welding machine. However, when welding, the existing method is to manually splice multiple aluminum alloy medium and thick plates with each other, and then flip them and push them into the aluminum alloy welding machine. In this process, the connection gap between the multiple aluminum alloy medium and thick plates cannot be guaranteed. If the gap at the connection between the aluminum whole plates is too large or too small, it will affect the formation of the weld. If the gap is too large, it will lead to insufficient weld filling, resulting in defects of incomplete fusion or incomplete penetration; if the gap is too small, it will increase the difficulty of welding and even cause weld cracking. For this reason, we propose a laser welding device for aluminum alloy medium and thick plates. Summary of the invention

[0003] The object of the present invention is to provide a laser welding device for aluminum alloy medium and thick plates to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a laser welding device for aluminum alloy medium and thick plates, comprising a laser welding machine body for simultaneously welding a plurality of aluminum alloy medium and thick plates, wherein a first support platform and a second support platform are sequentially arranged at the entrance of the laser welding machine body, and a plurality of aluminum alloy medium and thick plates are placed on a table between the first support platform and the second support platform; A position adjustment mechanism is provided on one side of the first support platform away from the second support platform, and the position adjustment mechanism is used to synchronously adjust the ends and positions of the plurality of aluminum alloy medium and thick plates; A connection distance adjustment mechanism is provided between the first support platform and the second support platform. The connection distance adjustment mechanism is used to adjust the connection gap between multiple aluminum alloy medium and thick plates and assist the aluminum alloy medium and thick plates to enter the interior of the laser welding machine body.

[0005] Wherein, the position adjustment mechanism includes a support base, a lifting cylinder, a support plate, a rotating shaft, a synchronous rotating member and a convergent guide member, the support base is located on a side of the first support platform away from the second support platform, and the lifting cylinder is fixedly installed on the support base, the output end of the lifting cylinder is fixedly connected to the support plate, and the support plate is slidably connected to the support base; There are multiple rotating shafts, and the multiple rotating shafts are equidistantly arranged on the support plate. The rotating shafts are rotatably connected to the support plate. The synchronous rotating member is installed on the support plate, and the synchronous rotating member is used to synchronously drive the multiple rotating shafts. There are multiple converging guide members, and the multiple converging guide members are respectively connected to the multiple rotating shafts, and the multiple converging guide members are slidably connected to the support plate.

[0006] Among them, the synchronous rotating parts include a rotating gear, a gear bar, a connecting plate and a pushing cylinder. There are multiple rotating gears, and the multiple rotating gears are respectively fixedly sleeved on the outside of multiple rotating shafts. The gear bar is meshed and connected with the rotating gear, and the connecting plate is fixedly connected to one side of the multiple gear bars. The pushing cylinder is fixedly installed on the support plate, and the output end of the pushing cylinder is fixedly connected to the connecting plate. Through the synchronous rotating parts, the function of synchronously driving multiple rotating shafts is realized.

[0007] Among them, the aggregation guide member includes a reciprocating member, a connecting shell, an end contact detection member and a pushing member. The reciprocating member is fixedly installed on the rotating shaft. Two connecting shells are provided, and the two connecting shells are respectively connected to the two ends of the reciprocating member. Two sliders are fixedly installed on the bottom of the connecting shell, and the connecting shell is slidably connected to the support plate through the two sliders. The end contact detection member is installed at one end of the connecting shell, and the pushing member is installed on the connecting shell. Through the provided aggregation guide member, the function of aggregation guiding of multiple aluminum alloy medium and thick plates is realized.

[0008] Among them, the reciprocating part includes a swing rod, a connecting shaft, a linkage rod and a linkage shaft. The swing rod is fixedly installed on the rotating shaft. There are two connecting shafts, and the two connecting shafts are respectively fixedly installed at the two ends of the swing rod. There are two linkage rods, one end of the two linkage rods is rotatably connected to the two connecting shafts respectively, and the linkage shaft is fixedly installed on the other end of the linkage rod, and the linkage shaft is rotatably connected to the corresponding connecting shell. Through the reciprocating part, the function of connecting the two connecting shells is realized.

[0009] Wherein, the end contact detection member includes a positioning shaft, an L-shaped rod, a connecting spring, a pressure sensor, an end roller and a side stop roller, the positioning shaft is rotatably connected to the end of the connecting shell, the center of the L-shaped rod is fixedly sleeved on the outside of the positioning shaft, one end of the connecting spring is fixedly connected to a side of the L-shaped rod away from the first support platform, and the other end of the connecting spring is fixedly connected to the pressure sensor, one side of the pressure sensor is fixedly installed with a fixing plate, and the fixing plate is fixedly installed on the top of the connecting shell, and the end roller is rotatably connected to the L-shaped rod and close to one end of the X-axis line of the connecting shell; The side stop roller is rotatably connected to the other end of the L-shaped rod, and the position of the aluminum alloy medium and thick plate is detected through the end contact piece.

[0010] Among them, the pushing member includes a pushing roller and a synchronous rotating member. There are multiple pushing rollers, and the multiple pushing rollers are rotatably connected to the connecting shell. The synchronous rotating member is installed inside the connecting shell, and the synchronous rotating member is used to drive the multiple pushing rollers in the same direction. Through the pushing member, the function of pushing the aluminum alloy medium and thick plate is achieved.

[0011] The connection distance adjustment mechanism includes a fixed base, a mobile base, a mobile frame, a flip plate, a flip member and a distance adjustment member. The fixed base is located between the first support platform and the second support platform, and the fixed base is used to drive the mobile base to move toward the second support platform. The second support platform is provided with a moving port. The mobile frame is slidably connected to the mobile base, and the mobile base is provided with a moving part for driving the mobile frame; The flipping member is installed on the mobile frame, and the flipping member is used to drive the flipping plate. The distance adjusting member is installed on one side of the flipping plate. Through the connection distance adjustment mechanism, the welding distance between multiple aluminum alloy medium and thick plates can be synchronously and accurately adjusted.

[0012] Wherein, the distance adjusting member comprises an upper support frame, a lower support frame, a connecting cylinder and a connecting member, one side of the lower support frame is fixedly connected to the flip plate, and the connecting cylinder is fixedly installed on the lower support frame, the output end of the connecting cylinder is fixedly connected to the upper support frame, and a plurality of positioning frames are evenly spaced on the side where the upper support frame and the lower support frame are close to each other, and there are two connecting members, the two connecting members are respectively connected to the upper support frame and the lower support frame, and the connecting member is used to connect the plurality of positioning frames, a reciprocating cylinder is installed on the upper support frame, and a reciprocating plate is fixedly installed on the output end of the reciprocating cylinder, a positioning port is provided on the upper support frame and at a position corresponding to the reciprocating plate, and the reciprocating plate slides through the positioning port and is fixedly connected to one of the positioning frames; A synchronization member is provided between two of the positioning frames at the upper support frame and the lower support frame; Both ends of the positioning frame are rotatably connected with rotating sleeves, and a clamping belt is transmission-connected between the two rotating sleeves. The upper support frame and the lower support frame are provided with transmission parts for synchronously driving multiple rotating sleeves, and the gap between the medium and thick aluminum alloy plates can be adjusted by the distance adjusting parts.

[0013] Among them, guide holes are provided at the positions of the transmission parts corresponding to the multiple rotating sleeves, and the transmission parts include a transmission rod and a driving motor. There are two transmission rods, one end of the two transmission rods is rotatably connected to the upper support frame, and the two transmission rods slide through the multiple guide holes respectively. The driving motor is used to drive one of the transmission rods, and the driving motor is fixedly installed on the upper support frame. Through the transmission parts provided, the clamping belts at the multiple positioning frames are synchronously driven.

[0014] The present invention has at least the following beneficial effects: When the present invention is used, the first support platform and the second support platform are sequentially arranged at the entrance of the laser welding machine body, so that the staff can sequentially and stably place multiple aluminum alloy medium and thick plates on the table surface between the first support platform and the second support platform, and the position adjustment mechanism is provided, so that the spacing between the multiple aluminum alloy medium and thick plates and the position of the end portions can be accurately adjusted, and then, in conjunction with the connection distance adjustment mechanism, the gap between the multiple aluminum alloy medium and thick plates with the adjusted spacing can be further accurately controlled, thereby ensuring the accuracy of the welding seams between the multiple aluminum alloy medium and thick plates, and further realizing accurate welding between the aluminum alloy medium and thick plates; The connection distance adjustment mechanism in the present invention not only realizes the precise adjustment of the gaps between a plurality of aluminum alloy medium and thick plates, but also realizes the flipping of the aluminum alloy medium and thick plates and auxiliary pushing them into the interior of the laser welding machine body, thereby further ensuring the stability and continuity of the welding of the aluminum alloy medium and thick plates during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side view of the overall structure of the present invention; Figure 3 It is a top view of the overall structure of the present invention; Figure 4 It is a schematic diagram of the structure of the first support platform of the present invention; Figure 5 This is a schematic diagram of the side view structure of the support base of the present invention; Figure 6 This is a schematic diagram of the support plate structure of the present invention; Figure 7It is a schematic diagram of the structure of the synchronous rotating member of the present invention; Figure 8 It is a schematic diagram of the linkage rod structure of the present invention; Fig. 9 It is a schematic diagram of the structure of the end contact detection member of the present invention; Fig.10 It is a schematic diagram of the structure of the synchronous rotating member of the present invention; Fig.11 This is a schematic diagram of the upper support frame structure of the present invention; Fig.12 This is a schematic diagram of the fixed base structure of the present invention; Fig.13 This is a schematic diagram of the structure of the flip plate of the present invention; Fig.14 It is a schematic diagram of the structure of the connecting piece of the present invention; Fig.15 For the present invention Fig.14 Schematic diagram of the enlarged structure of area A in the middle.

[0016] In the figure: 1-laser welding machine body; 2-first support platform; 3-second support platform; 31-moving port; 4-position adjustment mechanism; 41-support base; 42-lifting cylinder; 43-support plate; 44-rotating shaft; 45-synchronous rotating member; 451-rotating gear; 452-gear bar; 453-connecting plate; 454-pushing cylinder; 46-aggregating guide; 5-connecting distance adjustment mechanism; 51-fixed base; 511-advancing screw; 512-servo motor; 52-moving base; 53-moving frame; 54-flip plate; 55-flip member; 551-flip motor; 552-flip shaft; 56-distance adjustment member; 561-upper support frame; 562-lower support frame; 563-connecting cylinder; 564-connecting member; 5641-central axis; 5642-synchronous axis; 5643-first connecting support rod; 564 4-second connecting support rod; 565-positioning frame; 566-reciprocating cylinder; 567-reciprocating plate; 568-rotating sleeve; 5681-guide hole; 569-clamping belt; 57-synchronizing member; 571-synchronizing plate; 572-synchronizing sleeve; 58-transmission member; 581-transmission rod; 582-driving motor; 6-reciprocating member; 61-swinging rod; 62-connecting shaft; 63-linking rod; 64-linking shaft; 7-connecting shell; 71-slider; 8-end contact detection member; 81-positioning shaft; 82-L-shaped rod; 83-connecting spring; 84-pressure sensor; 85-end roller; 86-side stop roller; 87-fixed plate; 9-pushing member; 91-pushing roller; 92-synchronous rotating member; 921-driving shaft; 922-rotating gear; 923-rotating gear chain; 924-guide wheel; 925-rotating motor. 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. Embodiment 1

[0018] See also Figures 1 to 3 A laser welding device for aluminum alloy medium and thick plates comprises a laser welding machine body 1 for simultaneously welding a plurality of aluminum alloy medium and thick plates, a first support platform 2 and a second support platform 3 are sequentially arranged at the entrance of the laser welding machine body 1, and a plurality of aluminum alloy medium and thick plates are placed on a table between the first support platform 2 and the second support platform 3; A position adjustment mechanism 4 is provided on one side of the first support platform 2 away from the second support platform 3, and the position adjustment mechanism 4 is used to synchronously adjust the ends and positions of the plurality of aluminum alloy medium and thick plates; See also Figures 4 to 10 The position adjustment mechanism 4 includes a support base 41, a lifting cylinder 42, a support plate 43, a rotating shaft 44, a synchronous rotating member 45 and a convergent guide member 46. The support base 41 is located on the side of the first support platform 2 away from the second support platform 3, and the lifting cylinder 42 is fixedly installed on the support base 41. The output end of the lifting cylinder 42 is fixedly connected to the support plate 43, and the support plate 43 is slidably connected to the support base 41, that is, the support base 41 is provided with a guide rod for guiding the support plate 43, so that the support plate 43 can stably move upward or downward relative to the support base 41; There are multiple rotating shafts 44, which are equidistantly arranged on the support plate 43. The rotating shafts 44 are rotatably connected to the support plate 43. A synchronous rotating member 45 is installed on the support plate 43, and the synchronous rotating member 45 is used to synchronously drive the multiple rotating shafts 44. There are multiple converging guide members 46, which are respectively connected to the multiple rotating shafts 44, and the multiple converging guide members 46 are slidably connected to the support plate 43.

[0019] See also Figure 7 The synchronous rotating member 45 includes a rotating gear 451, a gear bar 452, a connecting plate 453 and a pushing cylinder 454. The rotating gear 451 is provided with a plurality of gears, and the plurality of rotating gears 451 are respectively fixedly sleeved on the outside of the plurality of rotating shafts 44. The gear bar 452 is meshedly connected with the rotating gear 451. The connecting plate 453 is fixedly connected with one side of the plurality of gear bars 452. The pushing cylinder 454 is fixedly installed on the supporting plate 43, and the output end of the pushing cylinder 454 is fixedly connected with the connecting plate 453. The aggregate guide member 46 includes a reciprocating member 6, a connecting shell 7, an end contact detection member 8 and a pushing member 9. The reciprocating member 6 is fixedly mounted on the rotating shaft 44. Two connecting shells 7 are provided, and the two connecting shells 7 are respectively connected to the two ends of the reciprocating member 6. Two sliders 71 are fixedly mounted on the bottom of the connecting shell 7, and the connecting shell 7 is slidably connected to the support plate 43 through the two sliders 71. The end contact detection member 8 is installed at one end of the connecting shell 7, and the pushing member 9 is installed on the connecting shell 7.

[0020] See also Figure 8 The reciprocating member 6 includes a swing rod 61, a connecting shaft 62, a linkage rod 63 and a linkage shaft 64. The swing rod 61 is fixedly mounted on the rotating shaft 44. Two connecting shafts 62 are provided. The two connecting shafts 62 are respectively fixedly mounted at both ends of the swing rod 61. Two linkage rods 63 are provided. One end of the two linkage rods 63 is rotatably connected to the two connecting shafts 62 respectively. The linkage shaft 64 is fixedly mounted on the other end of the linkage rod 63, and the linkage shaft 64 is rotatably connected to the corresponding connecting shell 7.

[0021] The end contact detection member 8 includes a positioning shaft 81, an L-shaped rod 82, a connecting spring 83, a pressure sensor 84, an end roller 85 and a side stop roller 86. The positioning shaft 81 is rotatably connected to the end of the connecting shell 7. The center of the L-shaped rod 82 is fixedly sleeved on the outside of the positioning shaft 81. One end of the connecting spring 83 is fixedly connected to the side of the L-shaped rod 82 away from the first support platform 2, and the other end of the connecting spring 83 is fixedly connected to the pressure sensor 84. A fixing plate 87 is fixedly installed on one side of the pressure sensor 84, and the fixing plate 87 is fixedly installed on the top of the connecting shell 7. The end roller 85 is rotatably connected to the L-shaped rod 82 and is close to one end of the X axis of the connecting shell 7. The side stop roller 86 is rotatably connected to the other end of the L-shaped rod 82. In this embodiment, when the L-shaped rod 82 is not subjected to external force, the connecting spring 83 pushes the L-shaped rod 82 to rotate along the direction of the first support platform 2, that is, the end roller 85 is directed toward the position of the first support platform 2. In this state, it can be ensured that the end roller 85 can first contact one end of the aluminum alloy medium and thick plate and detect the position of the aluminum alloy medium and thick plate. The push member 9 includes a push roller 91 and a synchronous rotating member 92. There are multiple push rollers 91, and the multiple push rollers 91 are all rotatably connected to the connecting shell 7. The synchronous rotating member 92 is installed inside the connecting shell 7, and the synchronous rotating member 92 is used to drive the multiple push rollers 91 in the same direction. In the present invention, the synchronous rotating member 92 includes a driving shaft 921, a rotating gear 922, a rotating gear chain 923, a guide wheel 924 and a rotating motor 925. A plurality of driving shafts 921 are provided, and one end of the plurality of driving shafts 921 is respectively fixedly connected to the pushing roller 91, and the bottom of the driving shaft 921 passes through the top of the connecting shell 7, and the driving shaft 921 is rotatably connected to the connecting shell 7. A plurality of rotating gears 922 are provided, and the plurality of rotating gears 922 are respectively fixedly sleeved on the outside of the plurality of driving shafts 921. The rotating gear chain 923 is used to transmit the plurality of driving gears. A plurality of guide wheels 924 are provided, and the plurality of guide wheels 924 are respectively rotatably connected inside the connecting shell 7, and the plurality of guide wheels 924 are used to guide the rotating gear chain 923. The rotating motor 925 is installed inside the connecting shell 7, and the rotating motor 925 is used to drive one of the driving shafts 921. Specific implementation process: when placing multiple aluminum alloy medium and thick plates on the table surface between the first support platform 2 and the second support platform 3 in sequence, the ends of the multiple aluminum alloy medium and thick plates extend relatively to the outside of one end of the first support platform 2, and at this time, the pushing rollers 91, the side stop rollers 86 and the end rollers 85 on the multiple groups of connecting shells 7 are all higher than the table surface of the first support platform 2, and one end of the multiple aluminum alloy medium and thick plates is respectively located between the two connecting shells 7, and due to the elastic force of the connecting spring 83, the end rollers 85 are facing the first support platform 2 when they are in the initial position, so the end rollers 85 first contact with the ends of the aluminum alloy medium and thick plates, and at the same time, as the ends of the aluminum alloy medium and thick plates contact with the corresponding two end rollers 85, the end rollers 85 are simultaneously pushed to The L-shaped rod 82 is moved, and further rotates with the positioning shaft 81 as the center. When the L-shaped rod 82 rotates, the pressure sensor 84 is squeezed synchronously through the connecting spring 83. When the signal value detected by the pressure sensor 84 does not reach the set value, then at this time, the rotating motors 925 inside the two connecting shells 7 on both sides of the aluminum alloy medium and thick plate respectively run in the opposite direction, and further make the multiple pushing rollers 91 on both sides of the aluminum alloy medium and thick plate rotate in the opposite direction, so as to adjust the end of the aluminum alloy medium and thick plate, until the pressure value detected by the pressure sensor 84 reaches the set value, then the two rotating motors 925 stop running, and at this time, the end of the multiple aluminum alloy medium and thick plates and the spacing between the multiple aluminum alloy medium and thick plates are adjusted. See also Figures 11 to 15 A connection distance adjustment mechanism 5 is provided between the first support platform 2 and the second support platform 3. The connection distance adjustment mechanism 5 is used to adjust the connection gap between multiple aluminum alloy medium and thick plates and assist the aluminum alloy medium and thick plates to enter the interior of the laser welding machine body 1.

[0022] The connection distance adjustment mechanism 5 includes a fixed base 51, a movable base 52, a movable frame 53, a flip plate 54, a flip member 55 and a distance adjustment member 56. The fixed base 51 is located between the first support platform 2 and the second support platform 3, and the fixed base 51 is used to drive the movable base 52 to move toward the second support platform 3. The second support platform 3 is provided with a moving port 31. The moving frame 53 is slidably connected to the moving base 52, and the moving base 52 is provided with a moving part for driving the moving frame 53, the moving part includes a moving screw and a moving motor, the moving screw is rotatably connected to the inside of the moving base 52, and the moving motor is fixedly installed on the moving base 52, the moving motor is used to drive the moving screw, the moving frame 53 is threadedly sleeved on the outside of the moving screw, and further operated by the moving motor, so that the moving screw rotates relative to the inside of the moving base 52, and when the moving screw rotates, the driving force of the moving frame 53 is synchronously provided, and the moving frame 53 is further moved along the moving base 52 until the moving frame 53 and the moving opening 31 on the second support platform 3 are on the same X-axis line; The flip member 55 is installed on the moving frame 53, and the flip member 55 is used to drive the flip plate 54. The distance adjusting member 56 is installed on one side of the flip plate 54. The flip member 55 includes a flip motor 551551 and a flip shaft 552. The flip shaft 552 is rotatably connected to the moving frame 53, and the flip plate 54 is fixedly sleeved on the outside of the flip shaft 552. The flip motor 551 is fixedly installed on the moving frame 53, and the flip motor 551 is used to drive the flip shaft 552.

[0023] The distance adjusting member 56 includes an upper support frame 561, a lower support frame 562, a connecting cylinder 563 and a connecting member 564. One side of the lower support frame 562 is fixedly connected to the flip plate 54, and the connecting cylinder 563 is fixedly installed on the lower support frame 562. The output end of the connecting cylinder 563 is fixedly connected to the upper support frame 561. A plurality of positioning frames 565 are evenly spaced on the side where the upper support frame 561 and the lower support frame 562 are close to each other. There are two connecting members 564, which are respectively connected to the upper support frame 561 and the lower support frame 562, and the connecting member 564 is used to connect the plurality of positioning frames 565. A reciprocating cylinder 566 is installed on the upper support frame 561, and a reciprocating plate 567 is fixedly installed on the output end of the reciprocating cylinder 566. A positioning port is provided on the upper support frame 561 at a position corresponding to the reciprocating plate 567, and the reciprocating plate 567 slides through the positioning port and is fixedly connected to one of the positioning frames 565. As a further supplementary explanation, the connecting member 564 includes a central axis 5641, which is located on a positioning frame 565 at the center of the upper support frame 561 or the lower support frame, and the two ends of the central axis 5641 are respectively fixedly connected to the corresponding positioning frame 565 and the upper support frame 561 or the lower support frame 562, and the center of one side of the remaining positioning frames 565 is fixedly connected with a synchronous axis 5642, and the synchronous axis 5642 and the outer side of the central axis 5641 are rotatably connected with a first connecting rod 5643 and a second connecting rod 5644 in turn, and the adjacent first connecting rods 5643 and the second connecting rods 5644 are connected to each other through a pin shaft; Then, through the operation of the reciprocating cylinder 566, the corresponding positioning frames 565 are connected by the first connecting rod 5643 and the second connecting rod 5644, and the multiple positioning frames 565 at the edge are all synchronized along the positioning frame 565 at the central axis 5641. The position of the positioning frame 565 at the central axis 5641 remains unchanged. In the present invention, the number of positioning frames 565 and the welded aluminum alloy medium and thick plates is an odd number. At the same time, under the connection of the synchronous member 57, the multiple positioning frames 565 at the upper support frame 561 and the positioning frames 565 at the lower support frame 562 can be synchronized. A synchronization member 57 is provided between two positioning frames 565 at the upper support frame 561 and the lower support frame 562. The synchronization member 57 includes a synchronization plate 571 and a synchronization sleeve 572. One end of the synchronization plate 571 is fixedly connected to a positioning frame 565 at the edge of the upper support frame 561. The synchronization plate 571 is L-shaped, and the other end of the synchronization plate 571 slides through the synchronization sleeve 572. The synchronization sleeve 572 is fixedly connected to the positioning frame 565 at the edge of the lower support frame 562. Both ends of the positioning frame 565 are rotatably connected with rotating sleeves 568, and a clamping belt 569 is transmission-connected between the two rotating sleeves 568. The upper support frame 561 and the lower support frame 562 are both provided with a transmission member 58 for synchronously driving the multiple rotating sleeves 568.

[0024] Guide holes 5681 are provided at positions of the plurality of rotating sleeves 568 corresponding to the transmission member 58. The transmission member 58 includes a transmission rod 581 and a drive motor 582. Two transmission rods 581 are provided. One end of the two transmission rods 581 is rotatably connected to the upper support frame 561. The two transmission rods 581 slide through the plurality of guide holes 5681 respectively. The drive motor 582 is used to drive one of the transmission rods 581, and the drive motor 582 is fixedly mounted on the upper support frame 561. Specific implementation process: when multiple aluminum alloy medium and thick plates are placed on the table surface between the first support platform 2 and the second support platform 3, the outer surface of the clamping belt 569 at the lower support frame 562 is at the same height as the table surface of the first support platform 2, that is, multiple aluminum alloy medium and thick plates are synchronously placed on the multiple clamping belts 569 at the lower support frame 562, and when the distance between the multiple aluminum alloy medium and thick plates is adjusted, then at this time, by connecting the cylinder 563 to operate, the upper support frame 561 is moved downward along the lower support frame 562, until the multiple clamping belts 569 at the upper support frame 561 move down to contact with the upper surface of the aluminum alloy medium and thick plates, and at the same time, the clamping belts 569 above and below the aluminum alloy are synchronously clamped and fixed to the corresponding aluminum alloy medium and thick plates; At this time, the end rollers 85, the side blocking rollers 86 and the pushing rollers 91 at the ends of the plurality of aluminum alloy medium and thick plates are respectively moved downward under the operation of the lifting cylinder 42 until they are separated from the end positions of the aluminum alloy medium and thick plates. Subsequently, the reciprocating cylinder 566 is operated to make the connecting pieces 564 at the upper support frame 561 and the lower support frame 562 respectively drive the corresponding plurality of positioning frames 565 to perform relative variable distance movement until the gap between the plurality of aluminum alloy medium and thick plates reaches the set value, and then the reciprocating cylinder 566 stops operating. Subsequently, the flipping member 55 is operated to further flip the multiple fixed aluminum alloy medium and thick plates by 90° relative to the first support platform 2 and the second support platform 3. Subsequently, the movable frame 53 moves to the movable opening 31, and the movable base 52 moves along the fixed base 51, and further pushes the multiple aluminum alloy medium and thick plates into the laser welding machine body 1. At this time, the laser welding machine body 1 can achieve stable welding of multiple aluminum alloy medium and thick plates. Subsequently, the two driving motors 582 are synchronously operated in reverse, so that the transmission rod 581 drives the clamping belt 569 to rotate, and further enables the aluminum alloy medium and thick plates to continuously and stably enter the laser welding machine body 1, so as to achieve high-precision welding of the entire aluminum alloy plate and prevent the gap between the entire aluminum plates from being too large or too small. Embodiment 2

[0025] See also Figures 11 to 13 , Embodiment 2 is a further supplementary explanation of Embodiment 1, specifically: a forward screw 511 is rotatably connected inside the fixed base 51, and a servo motor 512 for driving the forward screw 511 is installed on the fixed base 51, the bottom of the movable base 52 is threadedly sleeved on the outer side of the forward screw 511, and the movable base 52 is slidably connected to the fixed base 51; Furthermore, when the movable base 52 moves relative to the fixed base 51, that is, when the movable base 52 moves toward the entrance of the laser welding machine body 1, the servo motor 512 is operated to further rotate the advance screw 511 relative to the fixed base 51. While the advance screw 511 rotates, the driving force of the movable base 52 is synchronously provided. At the same time, under the limiting action of the fixed base 51, the movable base 52 is further moved along the entrance of the laser welding machine body 1.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for aluminum alloy medium and thick plates, comprising a laser welding machine body (1) for simultaneously welding a plurality of aluminum alloy medium and thick plates, characterized in that: A first support platform (2) and a second support platform (3) are sequentially arranged at the entrance of the laser welding machine body (1), and a plurality of aluminum alloy medium and thick plates are placed on a table between the first support platform (2) and the second support platform (3); A position adjustment mechanism (4) is provided on a side of the first support platform (2) away from the second support platform (3), and the position adjustment mechanism (4) is used to synchronously adjust the ends and positions of a plurality of aluminum alloy medium and thick plates; A connection distance adjustment mechanism (5) is provided between the first support platform (2) and the second support platform (3), and the connection distance adjustment mechanism (5) is used to adjust the connection gap between the plurality of aluminum alloy medium and thick plates and assist the aluminum alloy medium and thick plates to enter the interior of the laser welding machine body (1).

2. The laser welding device for aluminum alloy medium and thick plates according to claim 1 is characterized in that: The position adjustment mechanism (4) comprises a support base (41), a lifting cylinder (42), a support plate (43), a rotating shaft (44), a synchronous rotating member (45) and a convergent guide member (46); the support base (41) is located on a side of the first support platform (2) away from the second support platform (3), and the lifting cylinder (42) is fixedly mounted on the support base (41); an output end of the lifting cylinder (42) is fixedly connected to the support plate (43), and the support plate (43) is slidably connected to the support base (41); A plurality of rotating shafts (44) are provided, and the plurality of rotating shafts (44) are equidistantly arranged on the support plate (43). The rotating shafts (44) are rotatably connected to the support plate (43). The synchronous rotating member (45) is mounted on the support plate (43), and the synchronous rotating member (45) is used to synchronously drive the plurality of rotating shafts (44). A plurality of the converging guide members (46) are provided, and the plurality of converging guide members (46) are respectively connected to the plurality of rotating shafts (44), and the plurality of converging guide members (46) are slidably connected to the support plate (43).

3. The laser welding device for aluminum alloy medium and thick plates according to claim 2 is characterized in that: The synchronous rotating member (45) comprises a rotating gear (451), a gear bar (452), a connecting plate (453) and a pushing cylinder (454). A plurality of rotating gears (451) are provided. The plurality of rotating gears (451) are respectively fixedly sleeved on the outside of a plurality of rotating shafts (44). The gear bar (452) is meshedly connected with the rotating gear (451). The connecting plate (453) is fixedly connected with one side of the plurality of gear bars (452). The pushing cylinder (454) is fixedly mounted on the supporting plate (43), and an output end of the pushing cylinder (454) is fixedly connected with the connecting plate (453).

4. The laser welding device for aluminum alloy medium and thick plates according to claim 2 is characterized in that: The aggregate guide member (46) comprises a reciprocating member (6), a connecting shell (7), an end contact detection member (8) and a pushing member (9); the reciprocating member (6) is fixedly mounted on a rotating shaft (44); two connecting shells (7) are provided, and the two connecting shells (7) are respectively connected to two ends of the reciprocating member (6); two sliders (71) are fixedly mounted on the bottom of the connecting shell (7), and the connecting shell (7) is slidably connected to a support plate (43) via the two sliders (71); the end contact detection member (8) is mounted on one end of the connecting shell (7), and the pushing member (9) is mounted on the connecting shell (7).

5. The laser welding device for aluminum alloy medium and thick plates according to claim 4 is characterized in that: The reciprocating member (6) comprises a swinging rod (61), a connecting shaft (62), a linkage rod (63) and a linkage shaft (64); the swinging rod (61) is fixedly mounted on the rotating shaft (44); two connecting shafts (62) are provided, and the two connecting shafts (62) are respectively fixedly mounted on two ends of the swinging rod (61); two linkage rods (63) are provided, and one end of the two linkage rods (63) is respectively rotatably connected to the two connecting shafts (62); the linkage shaft (64) is fixedly mounted on the other end of the linkage rod (63), and the linkage shaft (64) is rotatably connected to the corresponding connection shell (7).

6. The laser welding device for aluminum alloy medium and thick plates according to claim 4 is characterized in that: The end contact detection member (8) comprises a positioning shaft (81), an L-shaped rod (82), a connecting spring (83), a pressure sensor (84), an end roller (85) and a side stop roller (86); the positioning shaft (81) is rotatably connected to the end of the connecting shell (7); the center of the L-shaped rod (82) is fixedly sleeved on the outside of the positioning shaft (81); one end of the connecting spring (83) is fixedly connected to a side of the L-shaped rod (82) away from the first support platform (2); and the other end of the connecting spring (83) is fixedly connected to the pressure sensor (84); a fixing plate (87) is fixedly installed on one side of the pressure sensor (84); and the fixing plate (87) is fixedly installed on the top of the connecting shell (7); and the end roller (85) is rotatably connected to one end of the L-shaped rod (82) close to the X-axis line of the connecting shell (7); The side blocking roller (86) is rotatably connected to the other end of the L-shaped rod (82).

7. The laser welding device for aluminum alloy medium and thick plates according to claim 4 is characterized in that: The pushing member (9) comprises a pushing roller (91) and a synchronous rotating member (92); a plurality of the pushing rollers (91) are provided, and the plurality of pushing rollers (91) are all rotatably connected to the connecting shell (7); the synchronous rotating member (92) is installed inside the connecting shell (7), and the synchronous rotating member (92) is used to drive the plurality of pushing rollers (91) in the same direction.

8. The laser welding device for aluminum alloy medium and thick plates according to claim 1, characterized in that: The connection distance adjustment mechanism (5) comprises a fixed base (51), a movable base (52), a movable frame (53), a flip plate (54), a flip member (55) and a distance adjustment member (56); the fixed base (51) is located between the first support platform (2) and the second support platform (3); the fixed base (51) is used to drive the movable base (52) to move the movable base (52) toward the second support platform (3); and the second support platform (3) is provided with a moving opening (31); The movable frame (53) is slidably connected to the movable base (52), and the movable base (52) is provided with a movable member for driving the movable frame (53); The flip member (55) is mounted on the moving frame (53), and the flip member (55) is used to drive the flip plate (54), and the distance adjusting member (56) is mounted on one side of the flip plate (54).

9. The laser welding device for aluminum alloy medium and thick plates according to claim 8, characterized in that: The distance adjusting member (56) comprises an upper support frame (561), a lower support frame (562), a connecting cylinder (563) and a connecting member (564); one side of the lower support frame (562) is fixedly connected to the flip plate (54); the connecting cylinder (563) is fixedly mounted on the lower support frame (562); an output end of the connecting cylinder (563) is fixedly connected to the upper support frame (561); a plurality of positioning frames (565) are evenly spaced on one side of the upper support frame (561) and the lower support frame (562) that are close to each other; and the connecting member (564) is There are two connecting members (564), the two connecting members (564) are respectively connected to the upper support frame (561) and the lower support frame (562), and the connecting member (564) is used to connect a plurality of positioning frames (565), a reciprocating cylinder (566) is installed on the upper support frame (561), and a reciprocating plate (567) is fixedly installed on the output end of the reciprocating cylinder (566), a positioning opening is provided on the upper support frame (561) at a position corresponding to the reciprocating plate (567), and the reciprocating plate (567) slides through the positioning opening and is fixedly connected to one of the positioning frames (565); A synchronizing member (57) is provided between two of the positioning frames (565) at the upper supporting frame (561) and the lower supporting frame (562); Both ends of the positioning frame (565) are rotatably connected to rotating sleeves (568), and a clamping belt (569) is transmission-connected between the two rotating sleeves (568). The upper support frame (561) and the lower support frame (562) are both provided with a transmission member (58) for synchronously driving the plurality of rotating sleeves (568).

10. The laser welding device for aluminum alloy medium and thick plates according to claim 9, characterized in that: Guide holes (5681) are provided at positions of the plurality of rotating sleeves (568) corresponding to the transmission member (58). The transmission member (58) comprises a transmission rod (581) and a drive motor (582). Two transmission rods (581) are provided. One end of the two transmission rods (581) is rotatably connected to the upper support frame (561). The two transmission rods (581) slide through the plurality of guide holes (5681) respectively. The drive motor (582) is used to drive one of the transmission rods (581), and the drive motor (582) is fixedly mounted on the upper support frame (561).

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