Plate laser welding equipment and welding method

Abstract

The invention relates to a plate laser welding device and method, and the device comprises a supporting mechanism which is used for supporting a plate; the element pressing block is used for detachably pressing the element which is mounted at the element mounting position of the plate but is not welded; the transplanting mechanism is detachably connected with the element pressing block, and is used for driving the element pressing block to move to an element mounting position which is mounted on the plate and above an element which is not welded, and releasing the element pressing block; and the laser welding mechanism is used for welding the element at the element mounting position to the plate through laser. The separable element pressing block and the plate pressing block are adopted for pressing the element and the plate correspondingly, diffusion of welding thermal deformation to an easy-to-deform area can be reduced, position interference between the laser welding mechanism and other parts during element welding is prevented, it is further guaranteed that welding seams can be completed at a time during element welding, and the welding efficiency is improved. The first-pass yield of products can be better guaranteed, and meanwhile the welding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to a plate laser welding device and a welding method. Background Art

[0002] In the manufacturing of new energy vehicles, CTB battery integration technology is widely used. It mainly uses high-strength steel ultra-thin plates as the body floor, and integrates battery packs and supporting electronic components such as high-voltage connectors, water-cooling joints, low-voltage connectors, etc. on the floor.

[0003] Furthermore, laser welding technology is currently mostly used to complete the manufacture of the above-mentioned body floor, but the welding process cannot avoid the influence of thermal deformation. Excessive deformation will lead to difficulties in post-weld repair, increase the product failure rate, and low production efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a plate laser welding equipment and welding method, which adopts a separable component pressing block and a plate pressing block to respectively press the component and the plate, which can reduce the diffusion of welding thermal deformation to the easily deformed area, and prevent the laser welding mechanism from interfering with other parts during component welding, further ensuring that the weld when welding the component can be completed in one time, so as to better ensure the one-time qualified rate of the product and improve the welding efficiency.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] On the one hand, a plate laser welding device is provided, comprising:

[0007] A supporting mechanism, used for supporting the plate;

[0008] Component pressing blocks are used to detachably press components that have been installed in component mounting positions of a plate but have not been welded;

[0009] A transplanting mechanism, which is detachably connected to the component pressing block, and is used to drive the component pressing block to move to a component installation position that has been installed on a plate but above a component that has not been welded, and release the component pressing block to press the component through the component pressing block;

[0010] A laser welding mechanism is used to weld a component at a component mounting position to a plate by means of a laser.

[0011] Preferably, the transplanting mechanism comprises:

[0012] Guide rail mechanism;

[0013] A frame body, which is slidably matched with the guide rail mechanism and can move linearly along the extension direction of the guide rail mechanism;

[0014] A mounting plate connected to the frame;

[0015] And, a component pressing block clamping claw connected to the mounting plate and used for clamping and releasing the component pressing block.

[0016] Preferably, the supporting mechanism comprises:

[0017] A tail support mechanism, which is used to support the tail of the plate;

[0018] And, a component mounting position support mechanism is used to support the area on the plate where the component mounting position is set.

[0019] Preferably, the component mounting position support mechanism comprises:

[0020] Support;

[0021] A supporting platform, which is connected to the support and has a slot for supporting the plate;

[0022] And, a pressing block fastening mechanism is installed in the notch and is used to limit the position of the component pressing block on the component.

[0023] Preferably, the component mounting position support mechanism further comprises:

[0024] A suction cup, which is located under the supported plate and is used to adsorb the plate;

[0025] And, a cooling mechanism is connected to the supporting platform and is located outside the pressing block fastening mechanism, and is used to cool the welding area of ​​the component.

[0026] Preferably, the plate laser welding equipment further comprises:

[0027] A plate pressing block, which is detachably connected to the transplanting mechanism, can be moved to a predetermined position driven by the transplanting mechanism, and is released by the transplanting mechanism so as to press the plate through the plate pressing block;

[0028] After the plate pressing block presses the plate, all component mounting positions, all components and all component pressing blocks are located on the same side of the plate pressing block, and the area on the plate prone to welding thermal deformation is located on the other side of the plate pressing block.

[0029] Preferably, the transplanting mechanism further comprises:

[0030] The plate pressing block clamp is connected to the mounting plate and / or the frame and is used to clamp and release the plate pressing block.

[0031] Preferably, the supporting mechanism further comprises:

[0032] The contour support mechanism is used to support the area on the plate which is prone to thermal deformation during welding, and has a contour matching structure whose shape matches the shape of the area which is prone to thermal deformation during welding.

[0033] Preferably, the plate laser welding equipment further comprises: a clamping mechanism, which is used to clamp the plate on the supporting mechanism.

[0034] On the other hand, a plate laser welding method is also provided, which comprises the following steps:

[0035] Reinforcements are provided on the plate to enhance the overall strength of the plate;

[0036] The plate is moved onto the supporting mechanism through the loading mechanism;

[0037] The component pressing block and the plate pressing block are driven to move synchronously through the transfer mechanism until they move to the predetermined position;

[0038] The transplanting mechanism releases the component pressing block and the plate pressing block, so that the component pressing block and the component pressing block clamp are separated from each other, the material pressing block clamp and the plate pressing block are separated from each other, and each component pressing block presses one component correspondingly and the plate pressing block presses the plate;

[0039] The transplanting mechanism returns to the initial position, and the pressing mechanism presses the plate, the plate pressing block limiting mechanism presses the plate pressing block, and the pressing block fastening mechanism limits the position of the component pressing block on the component;

[0040] The laser welding mechanism outputs a laser beam to weld the component at the component mounting position to the plate by laser;

[0041] The transplanting mechanism moves to the predetermined position again, and re-clamps each component pressing block and the plate pressing block, so that each component pressing block is separated from the corresponding component, the plate pressing block is separated from the plate, and the restrictions of the clamping mechanism, the plate pressing block limiting mechanism, and the pressing block fastening mechanism are released;

[0042] Remove the plate with the components welded.

[0043] The beneficial effects of the present invention are:

[0044] The present invention adopts a component pressing block and a pressing block fastening mechanism for use in combination. The pressing block fastening mechanism plays a role in pressing the component pressing block while positioning the component pressing block, so as to ensure the matching accuracy of the component mounting hole and the component, and further ensure that the brazing gap is not too large during the subsequent brazing process, resulting in the situation that the brazing material cannot fill the gap, thereby reducing rework; in addition, after the plate pressing block presses the plate, the component to be welded can be isolated from the area on the plate that is prone to welding thermal deformation, and at the same time, the cooling effect of the water cooling mechanism is cooperated to reduce the diffusion of welding thermal deformation to the easily deformed area.

[0045] Furthermore, the present invention releases the detachable component pressing block and the plate pressing block through the transplanting mechanism, thereby preventing the laser welding mechanism from interfering with other components such as the clamping mechanism when welding components, and can further ensure that the weld when welding components can be completed in one time, so as to better ensure the one-time qualified rate of the product and improve the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention is further described below in conjunction with the accompanying drawings.

[0047] Figure 1 is a front view of the plate in the present invention;

[0048] Figure 2 It is the overall structure diagram of the plate laser welding equipment in the present invention;

[0049] Figure 3 It is the overall structural diagram of the transplanting mechanism in the present invention;

[0050] Figure 4 It is a structural diagram of the transplanting mechanism (excluding the guide rail mechanism) in the present invention;

[0051] Figure 5 This is a state diagram of the component pressing block and the plate pressing block after being released in the present invention;

[0052] Figure 6 It is a state diagram when the clamping mechanism, the pressing block fastening mechanism, and the plate pressing block limiting mechanism act on the plate, the component pressing block, and the plate pressing block respectively after the component pressing block and the plate pressing block are released in the present invention;

[0053] Figure 7 It is the overall structural diagram of the plate after component welding in the present invention;

[0054] Figure 8 It is the overall structural diagram of the contour support mechanism in the present invention;

[0055] Fig. 9 It is an overall structural diagram of the component mounting position support mechanism in the present invention;

[0056] Fig.10 yes Figure 6 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0057] The present invention will now be further described in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0058] Embodiment 1:

[0059] like Figure 1As shown, this embodiment provides a plate laser welding device, which is used to weld separated components 100 to a plate 200, wherein there can be multiple components 100, and the types and functions can be different. For example, in this embodiment, the components 100 include water-cooling joints, electrical connectors (such as high-voltage connectors, low-voltage connectors, etc.), etc. The plate 200 includes an upper cover plate of a battery cover in CTC or CTB battery integration technology, and the upper cover plate can also be used as a vehicle body floor, and component mounting positions 201 corresponding to the number of components to be welded are provided on the plate 200, and the component mounting positions 201 can be through-hole structures and / or blind-hole structures, and each component mounting position 201 corresponds to installing one component 100.

[0060] On this basis, if Figure 2 As shown, the plate laser welding equipment comprises:

[0061] A supporting mechanism 1, which is used to support the plate 200;

[0062] A component pressing block 2, which is used to detachably press a component 100 that has been installed on a component installation position 201 of a plate but has not been welded;

[0063] A transplanting mechanism 3, which is detachably connected to the component pressing block 2, and is used to drive the component pressing block 2 to move to the component installation position 201 that has been installed on the plate but above the component 100 that has not been welded, and release the component pressing block 2 to press the component 100 through the component pressing block 2. In this embodiment, each component pressing block 2 presses one component 100, and the shape of each component pressing block 2 matches the shape of the component 100 it presses;

[0064] A pressing mechanism 4, which is arranged at the periphery of the support mechanism 1, and is used to press the plate 200 on the support mechanism 1; in this embodiment, there can be multiple pressing mechanisms 4, which can press the side portions of the plate 200 in the width direction and / or the ends in the length direction;

[0065] The laser welding mechanism is used to weld the component 100 at the component installation position 201 to the plate 200 by laser. In this embodiment, the laser welding mechanism can be a laser brazing mechanism.

[0066] Specifically, Figure 3-4 As shown, the transplanting mechanism 3 includes:

[0067] A guide rail mechanism 31, which is arranged along the length direction of the plate 200;

[0068] A frame 32 (e.g., a gantry frame), which is slidably matched with the guide rail mechanism 31 and can move linearly along the extension direction of the guide rail mechanism 31;

[0069] A mounting plate 33 connected to the frame 32;

[0070] The component pressing block clamping jaw 34 is connected to the mounting plate 33 and is used to clamp and release the component pressing block 2. In this embodiment, the number of the component pressing block clamping jaws 34 and the number of the component pressing block 2 are the same, and there may be multiple of them, and each component pressing block clamping jaw 34 clamps one component pressing block 2;

[0071] The frame 32, the component pressing block clamp 34 and the component pressing block 2 clamped by the component pressing block clamp 34 can move synchronously along the guide rail mechanism 31, and the height position of the component pressing block clamp 34 can be adjusted to synchronously drive the component pressing block 2 clamped by the component pressing block clamp 34 to move in the height direction.

[0072] Furthermore, the synchronous movement of the frame 32, the component pressing block clamp 34 and the component pressing block 2 clamped by the component pressing block clamp 34 along the guide rail mechanism 31 can be achieved by a driving module such as a motor and a screw; the height position adjustment of the component pressing block clamp 34 can be achieved in a manner that only the frame 32 undergoes linear movement in the height direction, while the component pressing block clamp 34 does not undergo movement, for example, the movement of the frame 32 in the height direction can be achieved by a telescopic structure 321 (such as a cylinder, etc.), or, it can be achieved in a manner that only the component pressing block clamp 34 undergoes linear movement in the height direction, while the frame 32 does not undergo movement, for example, the movement of the component pressing block clamp 34 in the height direction can be achieved by a telescopic structure (such as a cylinder, etc.).

[0073] The working process of the welding equipment in this embodiment is as follows:

[0074] like Figure 5 As shown, the plate 200 is moved onto the supporting mechanism 1 by the loading mechanism;

[0075] Install the component 100 to the corresponding component installation position 201. This process can be completed manually or by machine equipment, and there is no need to weld the component 100 at this time;

[0076] The frame 32, the component pressing block clamping jaws 34 and the component pressing block 2 clamped by the component pressing block clamping jaws 34 are driven to move synchronously along the guide rail mechanism 31 until the component pressing block 2 moves to above the component 100 that is not being welded;

[0077] like Figure 6 As shown, the height position of the component pressing block clamping jaw 34 is adjusted to move toward the component 100. After reaching a predetermined height, the component pressing block clamping jaw 34 is loosened to release the component pressing block 2, so that the component pressing block 2 and the component pressing block clamping jaw 34 are separated from each other, and each component pressing block 2 presses one component 100 correspondingly;

[0078] The frame 32 and the component pressing block clamp 34 are driven to move away from the plate 200 to return to the initial position, and the pressing mechanism 4 presses the plate 200;

[0079] The laser welding mechanism outputs a laser beam to weld the component 100 at the component mounting position 201 to the plate 200 by laser;

[0080] The frame 32 and the component pressing block clamp 34 are driven to move synchronously along the guide rail mechanism 31 again, until the component pressing block clamp 34 moves again to above the component 100 that has been welded, and the height position of the component pressing block clamp 34 is adjusted to move toward the component 100;

[0081] The component pressing block clamping jaws 34 re-clamp each component pressing block 2 so that each component pressing block 2 is separated from the corresponding component 100, and then the plate 200 (such as Figure 7 shown);

[0082] The frame 32 , the component pressing block clamping jaws 34 , and the component pressing block 2 clamped by the component pressing block clamping jaws 34 are driven to synchronously move away from the plate 200 to return to the initial position to wait for the next loading of the plate 200 .

[0083] Embodiment 2:

[0084] The difference between this embodiment and embodiment 1 is that Figure 2 , as shown in 5-6, the support mechanism 1 includes:

[0085] The tail support mechanism 11 is used to support the tail 203 of the plate 200; in this embodiment, in the length direction, the end of the plate 200 away from the transplanting mechanism 3 is the tail 203;

[0086] The component mounting position support mechanism 12 is used to support the area where the component mounting position 201 is provided on the plate 200;

[0087] The profiling support mechanism 13 is used to support the area on the plate 200 that is prone to thermal deformation during welding, and has a profiling matching structure 131 whose shape matches the shape of the area that is prone to thermal deformation during welding, and the area that is prone to thermal deformation during welding and the profiling matching structure can match each other; wherein the area that is prone to thermal deformation during welding can be predetermined according to the actual welding effect;

[0088] For example, in this embodiment, Figure 1-2As shown in FIG8 , the contoured support mechanism 13 is located between the component mounting support mechanism 12 and the tail support mechanism 11, and the plate 200 has an "X"-shaped fork rib area 202, which is prone to welding thermal deformation. The contoured support mechanism 13 also has an "X"-shaped contoured matching structure 131 that matches the shape of the "X"-shaped fork rib area 202, and is arranged below the "X"-shaped fork rib area 202, so as to support and fix the "X"-shaped fork rib area 202 through the matching of the "X"-shaped contoured matching structure 131 and the "X"-shaped fork rib area 202 (the matching includes the matching of the concave and convex structure); preferably, the contoured support mechanism 13 includes a magnet (preferably, the contoured matching structure is not entirely or partially magnetized), thereby firmly adsorbing the plate 200 and enhancing the positioning effect of the plate 200.

[0089] Further, such as Fig. 9 As shown, the component mounting position support mechanism 12 includes:

[0090] Support 121;

[0091] A supporting platform 122 connected to the support 121 and having a notch 126, wherein the supporting platform 122 is used to support the plate 200;

[0092] A pressing block fastening mechanism 123, which is installed in the notch 126 and is used to define the position of the component pressing block 2 on the component 100;

[0093] A suction cup 124, which is located below the supported plate 200 and is used to absorb the plate 200 to prevent the plate 200 from changing position;

[0094] and a cooling mechanism 125, which is connected to the support platform 122 and is located outside the pressing block fastening mechanism 123, and is used to cool the welding area of ​​the element 100 to prevent the thermal deformation generated during welding from spreading to the area of ​​the plate 200 that is prone to thermal deformation during welding;

[0095] In this embodiment, there are a plurality of support platforms 122 , and each support platform 122 corresponds to a component mounting position 201 , and the cooling mechanism 125 includes a water cooling plate.

[0096] Further, such as Fig.10 As shown, the pressing block fastening mechanism 123 includes a pin clamping cylinder. When the plate 200 is supported by the supporting platform 122, the pin clamping cylinder extends upward through the slot 126, passes through the component mounting position 201, the component pressing block 2, and locks the component pressing block 2, while limiting the position of the component pressing block 2.

[0097] In this embodiment, the plate 200 is moved to the supporting mechanism 1 by the loading mechanism, so that the tail 203 of the plate 200 is supported by the tail supporting mechanism 11, the area prone to welding deformation is supported by the contour supporting mechanism 13, and the area where the component mounting position 201 is provided on the plate 200 is supported by the supporting platform 122, and then the component pressing block 2 is released by the transferring mechanism 3, so that each component pressing block 2 corresponds to pressing a component 100, and then the pressing block fastening mechanism 123 limits the position of the component pressing block 2 on the component 100.

[0098] Embodiment 3:

[0099] The difference between this embodiment and embodiment 1 or 2 is that the plate laser welding equipment further includes:

[0100] The plate pressing block 6 is detachably connected to the transplanting mechanism 3; the transplanting mechanism 3 drives the plate pressing block 6 to move to a predetermined position, and releases the plate pressing block 6, so as to press the plate 200 by the plate pressing block 6; in this embodiment, the plate pressing block 6 is a strip-shaped structure as a whole, and extends along the width direction of the plate 200, and after the plate pressing block 6 presses the plate 200, all component mounting positions 201, all components 100 and all component pressing blocks 2 are located on the same side of the plate pressing block 6, and the area on the plate 200 that is prone to welding thermal deformation is located on the other side of the plate pressing block 6, thereby isolating the component 100 to be welded from the area that is prone to welding thermal deformation by the plate pressing block 6, so as to reduce the diffusion of thermal deformation generated during welding of the component 100 to the area that is prone to welding thermal deformation; at the same time, a magnet is also provided on the plate pressing block 6, so as to enhance the pressing and fixing effect of the plate 200 by combining the adsorption effect of the magnet on the plate 200 with the pressing of the plate pressing block 6;

[0101] And a plate pressing block limiting mechanism 5, which is arranged on the side of the plate 200 and is used to press the released plate pressing block 6.

[0102] Furthermore, the transplanting mechanism 3 also includes:

[0103] A sheet pressing block clamp 35, which is connected to the mounting plate 33 and / or the frame 32, and is used to clamp and release the sheet pressing block 6. In this embodiment, there may also be a plurality of sheet pressing blocks 6, which are used to clamp different positions of the sheet pressing block 6 respectively;

[0104] The frame 32, the sheet pressing block clamp 35 and the sheet pressing block 6 clamped by the sheet pressing block clamp 35 can move synchronously along the guide rail mechanism 31, and the height position of the sheet pressing block clamp 35 can be adjusted to synchronously drive the sheet pressing block 6 clamped by the sheet pressing block clamp 35 to move in the height direction, and the height position adjustment method of the sheet pressing block clamp 35 can be the same as that of the component pressing block clamp 34.

[0105] Furthermore, the clamping mechanism 4 and the plate pressing block limiting mechanism 5 both include driving components such as a pressing arm, a pressing block and a cylinder, and the driving components drive the pressing arm and the pressing block to rotate or translate to achieve clamping of the plate and the pressing block.

[0106] In this embodiment, the frame 32, the component pressing block clamp 34, the plate pressing block clamp 35, the component pressing block 2, and the plate pressing block 6 can be driven to move synchronously along the guide rail mechanism 31 until the component pressing block 2 moves to the top of the component 100 that is not being welded;

[0107] Adjust the height positions of the component pressing block jaws 34 and the plate pressing block jaws 35 so that the component pressing block jaws 34 and the plate pressing block jaws 35 move toward the component 100 and the plate 200 respectively. After reaching the predetermined height, the component pressing block jaws 34 and the plate pressing block jaws 35 are loosened to release the component pressing block 2 and the plate pressing block 6, so that the component pressing block 2 and the component pressing block jaws 34 are separated from each other, and the plate pressing block jaws 35 and the plate pressing block 6 are separated from each other, and each component pressing block 2 is pressed against a component 100 and the plate pressing block 6 is pressed against the plate 200 respectively.

[0108] The frame 32, the component pressing block clamp 34, and the plate pressing block clamp 35 are driven to move synchronously away from the plate 200 to return to the initial position, and the pressing mechanism 4 presses the plate 200, and the plate pressing block limiting mechanism 5 presses the plate pressing block 6;

[0109] The laser welding mechanism outputs a laser beam to weld the component 100 to the plate 200 by laser;

[0110] The frame 32, the component pressing block clamp 34, and the plate pressing block clamp 35 are driven to move synchronously along the guide rail mechanism 31 again, until the component pressing block clamp 34 moves again to above the welded component 100, and the height positions of the component pressing block clamp 34 and the plate pressing block clamp 35 are adjusted so that they move toward the component pressing block 2 and the plate pressing block 6 respectively;

[0111] The component pressing block clamping jaws 34 re-clamp each component pressing block 2, and the plate pressing block clamping jaws 35 re-clamp the plate pressing block 6, so that each component pressing block 2 is separated from the corresponding component 100, and the plate pressing block 6 is separated from the plate 200, and the frame 32, the component pressing block clamping jaws 34, the plate pressing block clamping jaws 35, the component pressing block 2, and the plate pressing block 6 are driven to move synchronously away from the plate 200 along the guide rail mechanism 31 again;

[0112] The plate 200 on which the welding of the element 100 is completed is taken away.

[0113] Embodiment 4:

[0114] This embodiment provides a plate laser welding method, which can be implemented by the laser welding device described in any one of Embodiments 1-3. The laser welding method includes the following steps:

[0115] S1. Arranging a reinforcement member 204 on the plate 200 by spot welding or other methods to enhance the overall strength of the plate 200 and reduce the deformation amount of the area on the plate 200 that is prone to thermal deformation during subsequent welding;

[0116] S2, moving the plate 200 onto the supporting mechanism 1 through the loading mechanism;

[0117] S3, driving the component pressing block 2 and the plate pressing block 6 to move synchronously through the transfer mechanism 3 until they move to a predetermined position;

[0118] S4, the transplanting mechanism 3 releases the component pressing block 2 and the plate pressing block 6, so that the component pressing block 2 and the component pressing block clamp 34 are separated from each other, the material pressing block clamp 35 and the plate pressing block 6 are separated from each other, and each component pressing block 2 presses one component 100 and the plate pressing block 6 presses the plate 200;

[0119] S5, the transplanting mechanism 3 returns to the initial position, and the pressing mechanism 4 presses the plate 200, the plate pressing block limiting mechanism 5 presses the plate pressing block 6, and the pressing block fastening mechanism 123 limits the position of the component pressing block 2 on the component 100;

[0120] S6. The laser welding mechanism outputs a laser beam to weld the component 100 at the component mounting position 201 to the plate 200 by laser. Preferably, before welding the component 100, the plate 200 is cleaned to remove surface oil, debris, etc.

[0121] S7, the transplanting mechanism 3 moves to the predetermined position again, and re-clamps each component pressing block 2 and the plate pressing block 6, so that each component pressing block 2 is separated from the corresponding component 100, and the plate pressing block 6 is separated from the plate 200, and the restrictions of the clamping mechanism 4, the plate pressing block limiting mechanism 5, and the pressing block fastening mechanism 123 are released;

[0122] S8, taking away the plate 200 on which the component 100 has been welded, and waiting for the next plate 200 to be loaded.

[0123] In summary, the present invention adopts the component pressing block and the pressing block fastening mechanism for use in combination, and the structural design is simple. The pressing block fastening mechanism plays a role in pressing the component pressing block while positioning the component pressing block, so as to ensure the matching accuracy of the component mounting hole and the component, so that the installation gap between the component and the plate meets the requirements, and further ensures that the brazing gap is not too large during the subsequent brazing process, resulting in the situation that the brazing material cannot fill the gap, thereby reducing or avoiding the decrease in weld strength, the occurrence of welding defects such as cracks or pores, and the phenomenon of rework due to unqualified airtightness detection;

[0124] In addition, after the plate pressing block presses the plate, the components to be welded can be isolated from the area on the plate that is prone to welding thermal deformation. At the same time, the cooling effect of the water cooling mechanism can be used to reduce the spread of welding thermal deformation to the easily deformed area.

[0125] Furthermore, the present invention releases the separable component pressing block and the plate pressing block through the transplanting mechanism, so that when component welding is performed, there is only one component pressing block with a smaller volume on the component, and there is only one plate pressing block on the plate. Each component pressing block can be used to fix the position of a single component in a targeted manner, and the plate pressing block can be used to press a specific area of ​​the plate to prevent the laser welding mechanism from interfering with other components such as the clamping mechanism when welding components. This can further ensure that the weld when welding components can be completed in one go, so as to better ensure the one-time pass rate of the product and improve the welding efficiency at the same time.

[0126] It should be noted that the technical features in the above-mentioned embodiments 1 to 4 can be combined arbitrarily, and the combined technical solutions all belong to the protection scope of this application. At the same time, in this article, terms such as "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an 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 article or device. In the absence of further restrictions, the elements defined by the sentence "including a ..." do not exclude the existence of other identical elements in the article or device including the elements.

[0127] 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 sheet metal laser welding device, characterized in that: include: A supporting mechanism, used for supporting the plate; Component pressing blocks are used to detachably press components that have been installed in component mounting positions of a plate but have not been welded; A transplanting mechanism, which is detachably connected to the component pressing block, and is used to drive the component pressing block to move to a component installation position that has been installed on a plate but above a component that has not been welded, and release the component pressing block to press the component through the component pressing block; A laser welding mechanism is used to weld a component at a component mounting position to a plate by means of a laser.

2. The plate laser welding equipment according to claim 1, characterized in that: The transplanting mechanism comprises: Guide rail mechanism; A frame body, which is slidably matched with the guide rail mechanism and can move linearly along the extension direction of the guide rail mechanism; A mounting plate connected to the frame; And, a component pressing block clamping claw connected to the mounting plate and used for clamping and releasing the component pressing block.

3. The plate laser welding equipment according to claim 1, characterized in that: The supporting mechanism comprises: A tail support mechanism, which is used to support the tail of the plate; And, a component mounting position support mechanism is used to support the area on the plate where the component mounting position is set.

4. The plate laser welding equipment according to claim 3, characterized in that: The component mounting position support mechanism comprises: Support; A supporting platform, which is connected to the support and has a slot for supporting the plate; And, a pressing block fastening mechanism is installed in the notch and is used to limit the position of the component pressing block on the component.

5. The plate laser welding equipment according to claim 4, characterized in that: The component mounting position support mechanism also includes: A suction cup, which is located under the supported plate and is used to adsorb the plate; And, a cooling mechanism is connected to the supporting platform and is located outside the pressing block fastening mechanism, and is used to cool the welding area of ​​the component.

6. The plate laser welding equipment according to claim 1, characterized in that: The plate laser welding equipment also includes: A plate pressing block, which is detachably connected to the transplanting mechanism, can be moved to a predetermined position driven by the transplanting mechanism, and is released by the transplanting mechanism so as to press the plate through the plate pressing block; After the plate pressing block presses the plate, all component mounting positions, all components and all component pressing blocks are located on the same side of the plate pressing block, and the area on the plate prone to welding thermal deformation is located on the other side of the plate pressing block.

7. The plate laser welding equipment according to claim 6, characterized in that: The transplanting mechanism also includes: The plate pressing block clamp is connected to the mounting plate and / or the frame and is used to clamp and release the plate pressing block.

8. The plate laser welding equipment according to claim 3, characterized in that: The support mechanism also includes: The contour support mechanism is used to support the area on the plate which is prone to thermal deformation during welding, and has a contour matching structure whose shape matches the shape of the area which is prone to thermal deformation during welding.

9. The plate laser welding equipment according to claim 1, characterized in that: The plate laser welding equipment also includes: The clamping mechanism is used to clamp the plate on the supporting mechanism.

10. A plate laser welding method, characterized in that: The steps include: Reinforcements are provided on the plate to enhance the overall strength of the plate; The plate is moved onto the supporting mechanism through the loading mechanism; The component pressing block and the plate pressing block are driven to move synchronously through the transfer mechanism until they move to the predetermined position; The transplanting mechanism releases the component pressing block and the plate pressing block, so that the component pressing block and the component pressing block clamp are separated from each other, the material pressing block clamp and the plate pressing block are separated from each other, and each component pressing block presses one component correspondingly and the plate pressing block presses the plate; The transplanting mechanism returns to the initial position, and the pressing mechanism presses the plate, the plate pressing block limiting mechanism presses the plate pressing block, and the pressing block fastening mechanism limits the position of the component pressing block on the component; The laser welding mechanism outputs a laser beam to weld the component at the component mounting position to the plate by laser; The transplanting mechanism moves to the predetermined position again, and re-clamps each component pressing block and the plate pressing block, so that each component pressing block is separated from the corresponding component, the plate pressing block is separated from the plate, and the restrictions of the clamping mechanism, the plate pressing block limiting mechanism, and the pressing block fastening mechanism are released; Remove the plate with the components welded.

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