A laser welding positioning device for aluminum alloy plates

Abstract

The present invention relates to the field of plate laser welding positioning technology, specifically a laser welding positioning device for aluminum alloy plates, comprising a fixed plate installed on a laser welding head, support frames are respectively provided on both sides of the fixed plate, two sliding rods are fixedly passed through the fixed plate, and the two support frames are slidably sleeved on the two ends of the two sliding rods respectively; when the present invention is in use, through the fixed plate provided on the laser welding head, and the connecting mechanism, support frame and positioning guide mechanism provided on the fixed plate, when spot welding two finished aluminum alloy cold plates, the staff only needs to overlap the two aluminum alloy cold plates and place them on the workbench, and then, after the laser welding head moves to the spot welding position, the two aluminum alloy cold plates can be quickly positioned and the two aluminum alloy cold plates can be pressed against each other, thereby assisting the laser welding head to quickly position the two aluminum alloy cold plates.

Description

Technical Field

[0001] The invention relates to the technical field of plate laser welding positioning technology, in particular to a laser welding positioning device for an aluminum alloy plate. Background Art

[0002] Laser welding utilizes a high-energy-density laser beam as a heat source. Through thermal coupling between the laser and the metal, the laser melts the metal and cools and crystallizes, forming a weld. For aluminum sheets, due to their high reflectivity and thermal conductivity, precise control of parameters such as laser power and welding speed is crucial to ensure weld quality.

[0003] At present, when welding two existing aluminum alloy cold plates, two workers are required to overlap the two aluminum alloy cold plates and place them on the workbench, and then adjust and position the two overlapped aluminum alloy cold plates. Subsequently, each worker holds a metal plate and presses the spot welding position of the two aluminum alloy cold plates so that the welding positions of the two aluminum alloy cold plates can be tightly connected during spot welding. However, in this process, since the aluminum alloy cold plates are finished products, their surfaces are relatively smooth. At this time, the workers hold the metal plates and press the spot welding positions, which is prone to slipping. At the same time, the workers' hands are close to the position of the laser welding head, which poses certain safety hazards. For this reason, we propose an aluminum alloy plate laser welding positioning device. Summary of the Invention

[0004] The purpose of the present invention is to provide a laser welding positioning device for aluminum alloy plates to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a laser welding positioning device for aluminum alloy plates, comprising a fixed plate mounted on a laser welding head, support frames being respectively provided on both sides of the fixed plate, two sliding rods being fixedly passed through the fixed plate, the two support frames being slidably sleeved on the two ends of the two sliding rods, and a connecting mechanism being provided on the laser welding head, the connecting mechanism being used to adjust the positions of the two support frames;

[0006] The two support frames are both provided with positioning guide mechanisms, and the two positioning guide mechanisms are used to position the spot welding positions of the two aluminum alloy cold plates and press the spot welding positions of the two aluminum alloy cold plates.

[0007] Furthermore, the connecting mechanism includes a first electric push rod, a push plate and a guide member. The first electric push rod is fixedly mounted on the laser welding head, and the output end of the first electric push rod is fixedly connected to the push plate. The push plate is V-shaped, and two push grooves are provided on the push plate. The guide member is arranged at the push groove, and the guide member is connected to the support frame.

[0008] Furthermore, the guide member includes a guide rod and a guide plate, the guide rod slides through the push groove, one end of the guide rod is fixedly connected to the support frame, and the other end of the guide rod is fixedly connected to the guide plate, and the guide plate is slidably connected to the push plate.

[0009] Furthermore, the positioning and guiding mechanism includes a positioning member, a detection member, a protective shell and a locking and pressing member. Two receiving grooves are provided on one side of the support frame close to the spot welding position of the aluminum alloy cold plate. The two receiving grooves correspond to the positions of the two aluminum alloy cold plates respectively. An opening is provided at the receiving groove close to the spot welding position of the aluminum alloy cold plate. The positioning member is provided at the receiving groove, and the positioning member is used to adjust the spot welding position of the aluminum alloy cold plate.

[0010] The detection member is located outside the opening, and the two detection members are fixedly mounted on the support frame, and the two detection members are used to detect the position of the aluminum alloy cold plate;

[0011] There are two protective shells, which are respectively located above and below the two aluminum alloy cold plates, and both protective shells are fixedly connected to the support frame. The locking pressing members are respectively installed on the sides of the two protective shells away from each other, and the two locking pressing members press the spot welding positions of the two aluminum alloy cold plates against each other.

[0012] The support frame is provided with a driving mechanism, and the driving mechanism is used to synchronously drive the two locking pressing members, and through the provided positioning guide mechanism, the two aluminum alloy cold plates are adjusted and positioned relative to each other.

[0013] Furthermore, the alignment member includes a guide wheel, a rotating shaft, a synchronization member, a support shaft and a rotating member. There are multiple guide wheels, and multiple guide wheels all pass through the opening. The rotating shaft passes through the guide wheel, and the rotating shaft is rotatably connected to the accommodating groove. The synchronization member is installed at multiple rotating shafts, and the synchronization member is used to synchronously drive multiple rotating shafts. One end of the support shaft is fixedly connected to one of the rotating shafts, and the other end of the support shaft is connected to the rotating member. The rotating member is located on the support frame, and through the alignment member provided, the spot welding position of the aluminum alloy cold plate is aligned and guided.

[0014] Furthermore, the synchronous part includes a synchronous gear, a limiting rod and a synchronous tooth chain. There are multiple synchronous gears, and the multiple synchronous gears are fixedly sleeved on multiple rotating shafts respectively. The synchronous tooth chain is used to transmit the multiple synchronous gears. There are multiple limiting rods, and the multiple limiting rods are fixedly installed inside the accommodating groove respectively, and the multiple limiting rods limit the synchronous tooth chain. Through the synchronous parts provided, the function of synchronously driving the multiple rotating shafts is achieved.

[0015] Furthermore, the detection part includes a connecting shell, a pressure sensor, an extrusion plate, a connecting spring and an arc plate. The connecting shell is fixedly installed on one side of the support frame close to the spot welding position of the aluminum alloy cold plate, and the connecting shell corresponds to the position of one of the aluminum alloy cold plates. The pressure sensor is installed inside the connecting shell, and one side of the extrusion plate is fixedly connected to the pressure sensor. There are multiple connecting springs, and the two ends of the multiple connecting springs are respectively fixedly connected to the extrusion plate and the arc plate. The arc plate slides through the opening on the connecting shell, and one side of the arc plate contacts the outer surface of the aluminum alloy cold plate. The detection part is provided, thereby realizing the function of detecting the position of the aluminum alloy cold plate.

[0016] Furthermore, the locking pressing member includes a positioning frame, a positioning shaft, a swing support rod, a connecting support rod, a pressing plate and a positioning member, the positioning frame is fixedly connected to the protective shell, and the positioning shaft is fixedly installed on the positioning frame, the swing support rod is rotatably sleeved on the outside of the positioning shaft, one end of the swing support rod is rotatably connected to the connecting support rod through a pin shaft, the other end of the swing support rod is connected to the driving mechanism, and the other end of the connecting support rod is rotatably connected to the pressing plate through a rotating shaft, the pressing plate is located on the outer surface of the spot welding position of the aluminum alloy cold plate, and the positioning member is arranged between the pressing plate and the positioning frame, and the locking pressing member is provided, thereby realizing the function of locking the aluminum alloy cold plate during spot welding.

[0017] Furthermore, the positioning member includes a slide rail and a slider, one end of the slider is fixedly connected to the pressing plate, and the other end of the slider is slidably sleeved on the slide rail, and the slide rail is fixedly installed inside the positioning frame, and the positioning member is provided to limit the pressing plate.

[0018] Furthermore, the driving mechanism includes a fixed shaft and a driving plate, two fixed shafts are provided, one end of the swing support rod is provided with a groove, and the fixed shaft is fixedly installed in the groove, the driving plate is provided with a movable opening, and the driving plate is slidably sleeved on the outer side of the fixed shaft through the movable opening, and the ends of the two driving plates close to each other are both provided with a connecting end, and two L-shaped limit plates are provided on the support frame, and the two connecting ends are respectively slidably connected between the two limit plates;

[0019] A second electric push rod is installed on the support frame, and an adjustment plate is fixedly connected to the output end of the second electric push rod, and the adjustment plate is Y-shaped, and both ends of the adjustment plate are guide ends, and a guide groove is provided at the guide end;

[0020] A connecting port is also provided at one end of the two driving plates that are close to each other, and a fixed rod is fixedly connected to the connecting port. The guide end slides through the connecting port, and the guide groove is slidably sleeved on the outside of the fixed rod. Through the provided driving mechanism, the two swing support rods are synchronously driven.

[0021] The present invention has at least the following beneficial effects:

[0022] When the present invention is in use, through the fixing plate provided on the laser welding head, and the connecting mechanism, the supporting frame and the positioning guiding mechanism provided on the fixing plate, when spot welding two finished aluminum alloy cold plates, the staff only needs to overlap the two aluminum alloy cold plates and place them on the workbench. Then, after the laser welding head moves to the spot welding position, the two aluminum alloy cold plates can be quickly positioned and pressed against each other, thereby assisting the laser welding head to quickly position the two aluminum alloy cold plates, and further realizing rapid spot welding of the aluminum alloy cold plates.

[0023] The two sets of positioning and guiding mechanisms in the present invention can adjust the two aluminum alloy cold plates separately and realize the function of synchronous positioning, thereby further ensuring the welding accuracy and stability of the aluminum alloy cold plate spot welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a side view of the overall structure of the present invention;

[0026] Figure 3 This is a top view of the push plate of the present invention;

[0027] Figure 4 This is a schematic structural diagram of the connecting mechanism of the present invention;

[0028] Figure 5 Schematic diagram of the sliding rod structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the pressing plate structure of the present invention;

[0030] Figure 7 Schematic diagram of the driving mechanism structure of the present invention;

[0031] Figure 8 This is a top view of the positioning member structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the guide wheel structure of the present invention;

[0033] Figure 10 This is a schematic diagram of the internal structure of the connecting shell of the present invention;

[0034] Figure 11 Schematic diagram of the limiting rod structure of the present invention;

[0035] Figure 12 This is a schematic diagram of the support structure of the present invention;

[0036] Figure 13 For the present invention Figure 12 Schematic diagram of the enlarged structure of area A in the middle.

[0037] In the figure: 1-laser welding head; 2-fixing plate; 3-support frame; 31-accommodating groove; 32-opening; 4-sliding rod; 5-connecting mechanism; 51-first electric push rod; 52-pushing plate; 521-pushing groove; 53-guide member; 531-guide rod; 532-guide plate; 6-positioning guide mechanism; 61-aligning member; 611-guide wheel; 612-rotating shaft; 613-synchronizing member; 6131-synchronizing gear; 6132-limiting rod; 6133-synchronizing gear chain; 614-support shaft; 62-detecting member; 621-connecting shell; 622-pressure sensor; 623-extrusion plate; 624-connecting spring; 625-arc plate; 63-protective shell; 7-locking pressing member; 71-positioning frame; 72-positioning shaft; 73-swinging support rod; 731-groove; 74-connecting support rod; 75-pressing plate; 76-positioning member; 761-slide rail; 762-slider; 8-driving mechanism; 81-fixed shaft; 82-driving plate; 821-moving port; 822-connecting port; 83-connecting end; 84-limiting plate; 85-second electric push rod; 86-adjusting plate; 861-guide end; 8611-guide groove; 87-fixed rod; 9-rotating member; 91-first bevel gear; 92-second bevel gear; 93-first driving shaft; 94-second driving shaft; 95-driving gear; 96-driving gear chain; 97-driving motor. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention. Example 1

[0039] See also Figures 1 to 3 A laser welding positioning device for aluminum alloy plates includes a fixed plate 2 mounted on a laser welding head 1, with support frames 3 provided on both sides of the fixed plate 2, two sliding rods 4 fixedly passing through the fixed plate 2, and the two support frames 3 are slidably sleeved on the two ends of the two sliding rods 4, and a connecting mechanism 5 is provided on the laser welding head 1, which is used to adjust the positions of the two support frames 3;

[0040] In this embodiment, the two support frames 3 are actually located outside the shell of the laser welding head 1 and close to the head of the laser welding head 1;

[0041] See also Figure 4 The connecting mechanism 5 includes a first electric push rod 51, a pushing plate 52 and a guide member 53. The first electric push rod 51 is fixedly installed on the laser welding head 1, and the output end of the first electric push rod 51 is fixedly connected to the pushing plate 52. The pushing plate 52 is V-shaped, and two pushing grooves 521 are provided on the pushing plate 52. The guide member 53 is arranged at the pushing groove 521, and the guide member 53 is connected to the support frame 3.

[0042] The guide member 53 includes a guide rod 531 and a guide plate 532. The guide rod 531 slides through the push groove 521. One end of the guide rod 531 is fixedly connected to the support frame 3, and the other end of the guide rod 531 is fixedly connected to the guide plate 532. The guide plate 532 is slidably connected to the push plate 52.

[0043] Specific implementation: In this embodiment, the spot welding positions of the two aluminum alloy cold plates are both located at the raised positions of the two aluminum alloy cold plates. Therefore, when spot welding two aluminum alloy cold plates superimposed on each other on the workbench, the welding head moves to the spot welding position. At this time, the two support frames 3 are both located on the outside of the spot welding position. Subsequently, the first electric push rod 51 is operated to move the push plate 52. When the push plate 52 moves, the two push grooves 521 thereon move synchronously. At this time, the support frames 3 are limited by the guide rod 531 and the slide rod 4, so that the two support frames 3 move toward each other until the sides of the two support frames 3 that are close to each other are in contact with the outer sides of the raised positions of the two aluminum alloy cold plates.

[0044] The two support frames 3 are each provided with a positioning guide mechanism 6, which is used to position the spot welding positions of the two aluminum alloy cold plates and press the spot welding positions of the two aluminum alloy cold plates;

[0045] See also Figures 4 to 13 The positioning guide mechanism 6 includes a positioning member 61, a detection member 62, a protective shell 63 and a locking pressing member 7. Two receiving grooves 31 are provided on one side of the support frame 3 close to the spot welding position of the aluminum alloy cold plate. The two receiving grooves 31 correspond to the positions of the two aluminum alloy cold plates respectively. The receiving groove 31 is provided with an opening 32 near the spot welding position of the aluminum alloy cold plate. The positioning member 61 is provided at the receiving groove 31. The positioning member 61 is used to adjust the spot welding position of the aluminum alloy cold plate.

[0046] The detection member 62 is located outside the opening 32. Both detection members 62 are fixedly mounted on the support frame 3 and are used to detect the position of the aluminum alloy cold plate.

[0047] There are two protective shells 63, which are respectively located above and below the two aluminum alloy cold plates, and both protective shells 63 are fixedly connected to the support frame 3. The locking pressing members 7 are respectively installed on the side of the two protective shells 63 away from each other, and the two locking pressing members 7 press the spot welding positions of the two aluminum alloy cold plates against each other;

[0048] A driving mechanism 8 is provided on the support frame 3 , and the driving mechanism 8 is used to synchronously drive the two locking pressing members 7 .

[0049] See also Figures 9 to 13 The positioning member 61 includes a guide wheel 611, a rotating shaft 612, a synchronous member 613, a support shaft 614 and a rotating member 9. There are multiple guide wheels 611, and multiple guide wheels 611 all pass through the opening 32. The rotating shaft 612 passes through the guide wheel 611, and the rotating shaft 612 is rotatably connected to the accommodating groove 31. The synchronous member 613 is installed at multiple rotating shafts 612, and the synchronous member 613 is used to synchronously drive the multiple rotating shafts 612. One end of the support shaft 614 is fixedly connected to one of the rotating shafts 612, and the other end of the support shaft 614 is connected to the rotating member 9. The rotating member 9 is located on the support frame 3.

[0050] The synchronous member 613 includes a synchronous gear 6131, a limiting rod 6132, and a synchronous gear chain 6133. There are multiple synchronous gears 6131, each of which is fixedly sleeved on the multiple rotating shafts 612. The synchronous gear chain 6133 is used to transmit the multiple synchronous gears 6131. ​​There are multiple limiting rods 6132, each of which is fixedly installed in the receiving groove 31, and each of the limiting rods 6132 limits the synchronous gear chain 6133.

[0051] Specific implementation process: while the laser welding head 1 moves along the spot welding position of the two aluminum alloy cold plates, the ends of the two support frames 3 first contact the two aluminum alloy cold plates to achieve preliminary adjustment and positioning of the aluminum alloy cold plates. Subsequently, the guide wheels 611 at the two support frames 3 contact the positions of the aluminum alloy cold plates, and after the relative positions of the two aluminum alloy cold plates are detected by the detection component 62, when the position of one of the aluminum alloy cold plates is offset from the position of the other aluminum alloy cold plate, the corresponding detection component 62 sends the detected signal to the controller, and the rotating component 9 runs, thereby causing the rotating components 9 on the same plane on the two support frames 3 to run, so that the multiple rotating shafts 612 at the corresponding aluminum alloy cold plates are guided by the synchronous gear 6131 and the gear chain to achieve the function of correcting the aluminum alloy cold plate, further aligning the two overlapping aluminum alloy cold plates with each other, and further achieving the function of positioning the aluminum alloy cold plate during welding.

[0052] See also Figure 10, the detection member 62 includes a connecting shell 621, a pressure sensor 622, an extrusion plate 623, a connecting spring 624 and an arc plate 625. The connecting shell 621 is fixedly mounted on one side of the support frame 3 close to the spot welding position of the aluminum alloy cold plate, and the connecting shell 621 corresponds to the position of one of the aluminum alloy cold plates. The pressure sensor 622 is mounted inside the connecting shell 621, and one side of the extrusion plate 623 is fixedly connected to the pressure sensor 622. A plurality of connecting springs 624 are provided, and the two ends of the plurality of connecting springs 624 are fixedly connected to the extrusion plate 623 and the arc plate 625, respectively. The arc plate 625 slides through the opening 32 on the connecting shell 621, and one side of the arc plate 625 contacts the outer surface of the aluminum alloy cold plate.

[0053] In this embodiment, the plate contacted by the outer surface of the aluminum alloy cold plate is arc-shaped, and the shape of the arc plate 625 can correspond to the edge shape of the protrusion of the aluminum alloy cold plate, and then when the two support frames 3 move toward the protrusion position of the aluminum alloy cold plate through the laser welding head 1, the four arc plates 625 are respectively located on the outside of the protrusion position, and then, when the two support frames 3 move toward each other, the four arc plates 625 move toward each other in pairs until they squeeze the protrusion position of the spot welding of the aluminum alloy cold plate, and then the arc plate 625 squeezes the squeezing plate 623 through the connecting spring 624, and when the two support frames 3 stop running, the four pressure sensors 622 respectively send the detection signal value to the controller, and when the signal value detected by the pressure sensor 622 is greater than the set value, the two rotating parts 9 corresponding to the protrusion position of the aluminum alloy cold plate are operated, thereby pushing the aluminum alloy cold plate through the multiple guide wheels 611, so that the aluminum alloy cold plate is away from the arc plate 625, until the signal value detected by the pressure sensor 622 reaches the set value;

[0054] When the signal values ​​detected by the two pressure sensors 622 do not reach the set values, the rotating part 9 at the corresponding aluminum alloy cold plate will operate, so that the multiple guide wheels 611 drive the aluminum alloy cold plate until the two aluminum alloy cold plates are aligned.

[0055] See also Figures 5 to 8 The locking pressing member 7 includes a positioning frame 71, a positioning shaft 72, a swing support rod 73, a connecting support rod 74, a pressing plate 75 and a positioning member 76. The positioning frame 71 is fixedly connected to the protective shell 63, and the positioning shaft 72 is fixedly mounted on the positioning frame 71. The swing support rod 73 is rotatably sleeved on the outside of the positioning shaft 72. One end of the swing support rod 73 is rotatably connected to the connecting support rod 74 through a pin shaft. The other end of the swing support rod 73 is connected to the driving mechanism 8, and the other end of the connecting support rod 74 is rotatably connected to the pressing plate 75 through a rotating shaft. The pressing plate 75 is located on the outer surface of the aluminum alloy cold plate spot welding position, and the positioning member 76 is arranged between the pressing plate 75 and the positioning frame 71.

[0056] The positioning member 76 includes a slide rail 761 and a slider 762 . One end of the slider 762 is fixedly connected to the pressing plate 75 , and the other end of the slider 762 is slidably sleeved on the slide rail 761 . The slide rail 761 is fixedly installed inside the positioning frame 71 .

[0057] The driving mechanism 8 includes a fixed shaft 81 and a driving plate 82. There are two fixed shafts 81. One end of the swing support rod 73 is provided with a groove 731, and the fixed shaft 81 is fixedly installed in the groove 731. A moving opening 821 is provided on the driving plate 82, and the driving plate 82 is slidably sleeved on the outer side of the fixed shaft 81 through the moving opening 821. The ends of the two driving plates 82 that are close to each other are each provided with a connecting end 83. Two L-shaped limit plates 84 are provided on the support frame 3. The two connecting ends 83 are respectively slidably connected between the two limit plates 84;

[0058] A second electric push rod 85 is mounted on the support frame 3, and an adjustment plate 86 is fixedly connected to the output end of the second electric push rod 85. The adjustment plate 86 is Y-shaped, and the two ends of the adjustment plate 86 are guide ends 861, and the guide ends 861 are provided with guide grooves 8611.

[0059] A connecting port 822 is provided at one end of the two driving plates 82 close to each other, and a fixing rod 87 is fixedly connected to the connecting port 822 . The guide end 861 slides through the connecting port 822 , and the guide groove 8611 slides onto the outside of the fixing rod 87 .

[0060] Specific implementation process: After the two aluminum alloy cold plates are adjusted, the two second electric push rods 85 are operated, thereby causing the adjustment plate 86 to move along the two driving plates 82. When the adjustment plate 86 moves, the fixing rod 87 is limited by the guide groove 8611. Under the limiting action of the driving plate 82, the two driving plates 82 at the two support frames 3 are guided by the connecting end 83 and the limiting plate 84 respectively, and then the two driving plates 82 are further moved in the direction away from each other.

[0061] When the driving plate 82 moves, the swing support rod 73 is rotated around the positioning shaft 72 as the center through the moving port 821 and the limiting guide of the fixed shaft 81, so that the other end of the swing support rod 73 drives the pressing plate 75 to move along the direction of the aluminum alloy cold plate through the connecting support rod 74 until the four pressing plates 75 are distributed in pairs above and below the spot welding positions of the two aluminum alloy cold plates, that is, at the raised positions of the spot welding of the two aluminum alloy cold plates, and the four pressing plates 75 press and fix the aluminum alloy cold plates. Example 2

[0062] See also Figures 11 to 13, Example 2 is a further explanation of the rotating member 9 in Example 1, specifically: the rotating member 9 includes a first bevel gear 91, a second bevel gear 92, a first drive shaft 93, a second drive shaft 94, a drive gear 95, a drive gear chain 96 and a drive motor 97, the first bevel gear 91 is fixedly connected to one end of the support shaft 614, and the first bevel gear 91 is meshed with the second bevel gear 92, one end of the first drive shaft 93 is fixedly connected to the second bevel gear 92, a support groove is provided on the support frame 3, and one end of the first drive shaft 93 and the second drive shaft 94 are rotatably connected at the support groove, there are two drive gears 95, the two drive gears 95 are fixedly sleeved on the first drive shaft 93 and the second drive shaft 94, and the drive gear chain 96 is transmission-connected between the two drive gears 95, the drive motor 97 is mounted on the support frame 3, and the drive motor 97 is used to drive the second drive shaft 94;

[0063] When the support shaft 614 is driven, the drive motor 97 is operated, and the second drive shaft 94 further drives the first drive shaft 93 to rotate through the drive gear 95 and the drive gear chain 96. When the first drive shaft 93 rotates, the first bevel gear 91 is driven to rotate through the second bevel gear 92, and the support shaft 614 at the first bevel gear 91 drives the rotating shaft 612 thereon to rotate relative to the support frame 3.

[0064] In this embodiment, the rotating member 9 is composed of a plurality of gears, which can keep the driving motor 97 away from the spot welding position, thereby protecting the driving motor 97 and driving the support shaft 614 at the same time.

[0065] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0066] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding positioning device for aluminum alloy plates, comprising a fixing plate (2) mounted on a laser welding head (1), characterized in that: Support frames (3) are respectively provided on both sides of the fixing plate (2), two sliding rods (4) are fixedly passed through the fixing plate (2), the two support frames (3) are respectively slidably sleeved on the two ends of the two sliding rods (4), and a connecting mechanism (5) is provided on the laser welding head (1), and the connecting mechanism (5) is used to adjust the positions of the two support frames (3); The two support frames (3) are each provided with a positioning guide mechanism (6), and the two positioning guide mechanisms (6) are used to position the spot welding positions of the two aluminum alloy cold plates and press the spot welding positions of the two aluminum alloy cold plates; The positioning guide mechanism (6) includes a positioning member (61), a detection member (62), a protective shell (63) and a locking pressing member (7); two receiving grooves (31) are provided on one side of the support frame (3) close to the spot welding position of the aluminum alloy cold plate; the two receiving grooves (31) respectively correspond to the positions of the two aluminum alloy cold plates; an opening (32) is provided on the receiving groove (31) close to the spot welding position of the aluminum alloy cold plate; the positioning member (61) is provided at the receiving groove (31); and the positioning member (61) is used to adjust the spot welding position of the aluminum alloy cold plate; The detection member (62) is located outside the opening (32), and the two detection members (62) are fixedly mounted on the support frame (3), and the two detection members (62) are used to detect the position of the aluminum alloy cold plate; Two protective shells (63) are provided, and the two protective shells (63) are respectively located above and below the two aluminum alloy cold plates, and the two protective shells (63) are fixedly connected to the support frame (3), and the locking pressing members (7) are respectively installed on the sides of the two protective shells (63) away from each other, and the two locking pressing members (7) press the spot welding positions of the two aluminum alloy cold plates against each other; A driving mechanism (8) is provided on the support frame (3), and the driving mechanism (8) is used to synchronously drive the two locking pressing members (7).

2. The laser welding positioning device for aluminum alloy plates according to claim 1, characterized in that: The connecting mechanism (5) comprises a first electric push rod (51), a push plate (52) and a guide member (53); the first electric push rod (51) is fixedly mounted on the laser welding head (1); and the output end of the first electric push rod (51) is fixedly connected to the push plate (52); the push plate (52) is V-shaped and provided with two push grooves (521); the guide member (53) is arranged at the push grooves (521), and the guide member (53) is connected to the support frame (3).

3. The laser welding positioning device for aluminum alloy plates according to claim 2, characterized in that: The guide member (53) includes a guide rod (531) and a guide plate (532), wherein the guide rod (531) slides through the push groove (521), one end of the guide rod (531) is fixedly connected to the support frame (3), and the other end of the guide rod (531) is fixedly connected to the guide plate (532), and the guide plate (532) is slidably connected to the push plate (52).

4. The laser welding positioning device for aluminum alloy plates according to claim 1, characterized in that: The alignment member (61) includes a guide wheel (611), a rotating shaft (612), a synchronous member (613), a support shaft (614) and a rotating member (9). The guide wheel (611) is provided in plurality, and the plurality of guide wheels (611) all pass through the opening (32). The rotating shaft (612) passes through the guide wheel (611), and the rotating shaft (612) is rotatably connected to the accommodating groove (31). The synchronous member (613) is installed at the plurality of rotating shafts (612), and the synchronous member (613) is used to synchronously drive the plurality of rotating shafts (612). One end of the support shaft (614) is fixedly connected to one of the rotating shafts (612), and the other end of the support shaft (614) is connected to the rotating member (9). The rotating member (9) is located on the support frame (3).

5. The aluminum alloy plate laser welding positioning device according to claim 4, characterized in that: The synchronous member (613) comprises a synchronous gear (6131), a limiting rod (6132) and a synchronous tooth chain (6133). A plurality of synchronous gears (6131) are provided, and the plurality of synchronous gears (6131) are respectively fixedly sleeved on a plurality of rotating shafts (612). The synchronous tooth chain (6133) is used to transmit the plurality of synchronous gears (6131). A plurality of limiting rods (6132) are provided, and the plurality of limiting rods (6132) are respectively fixedly installed inside the accommodating groove (31), and the plurality of limiting rods (6132) limit the synchronous tooth chain (6133).

6. The laser welding positioning device for aluminum alloy plates according to claim 5, characterized in that: The detection member (62) includes a connecting shell (621), a pressure sensor (622), an extrusion plate (623), a connecting spring (624) and an arc plate (625). The connecting shell (621) is fixedly mounted on a side of the support frame (3) close to the spot welding position of the aluminum alloy cold plate, and the connecting shell (621) corresponds to the position of one of the aluminum alloy cold plates. The pressure sensor (622) is mounted inside the connecting shell (621), and one side of the extrusion plate (623) is fixedly connected to the pressure sensor (622). A plurality of connecting springs (624) are provided, and two ends of the plurality of connecting springs (624) are fixedly connected to the extrusion plate (623) and the arc plate (625), respectively. The arc plate (625) slides through the opening (32) on the connecting shell (621), and one side of the arc plate (625) contacts the outer surface of the aluminum alloy cold plate.

7. The laser welding positioning device for aluminum alloy plates according to claim 1, characterized in that: The locking pressing member (7) comprises a positioning frame (71), a positioning shaft (72), a swing support rod (73), a connecting support rod (74), a pressing plate (75) and a positioning member (76), wherein the positioning frame (71) is fixedly connected to the protective shell (63), and the positioning shaft (72) is fixedly mounted on the positioning frame (71), the swing support rod (73) is rotatably sleeved on the outside of the positioning shaft (72), one end of the swing support rod (73) is rotatably connected to the connecting support rod (74) through a pin shaft, the other end of the swing support rod (73) is connected to the driving mechanism (8), the other end of the connecting support rod (74) is rotatably connected to the pressing plate (75) through a rotating shaft, the pressing plate (75) is located on the outer surface of the aluminum alloy cold plate spot welding position, and the positioning member (76) is arranged between the pressing plate (75) and the positioning frame (71).

8. The laser welding positioning device for aluminum alloy plates according to claim 7, characterized in that: The positioning member (76) includes a slide rail (761) and a slider (762), one end of the slider (762) is fixedly connected to the pressing plate (75), and the other end of the slider (762) is slidably sleeved on the slide rail (761), and the slide rail (761) is fixedly installed inside the positioning frame (71).

9. The aluminum alloy plate laser welding positioning device according to claim 8, characterized in that: The driving mechanism (8) includes a fixed shaft (81) and a driving plate (82), two fixed shafts (81) are provided, one end of the swing support rod (73) is provided with a groove (731), and the fixed shaft (81) is fixedly installed at the groove (731), a movable opening (821) is provided on the driving plate (82), and the driving plate (82) is slidably sleeved on the outer side of the fixed shaft (81) through the movable opening (821), and the ends of the two driving plates (82) close to each other are both provided with a connecting end (83), and two L-shaped limiting plates (84) are provided on the support frame (3), and the two connecting ends (83) are respectively slidably connected between the two limiting plates (84); A second electric push rod (85) is mounted on the support frame (3), and an adjustment plate (86) is fixedly connected to the output end of the second electric push rod (85), and the adjustment plate (86) is Y-shaped, and both ends of the adjustment plate (86) are guide ends (861), and a guide groove (8611) is provided at the guide end (861); A connecting port (822) is further provided at one end of the two drive plates (82) that is close to each other, and a fixing rod (87) is fixedly connected to the connecting port (822). The guide end (861) slides through the connecting port (822), and the guide groove (8611) is slidably sleeved on the outside of the fixing rod (87).

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