A block side wall assembly welding tooling and process for a laser welding structure

Abstract

The invention provides a block side wall assembly welding tool and process for laser welding structure, including the following steps: S1, using an assembly welding frame and an aluminum plate contoured working tread as the tool body; S2, milling an exhaust groove and a sealing groove in the aluminum plate contoured working tread, and using a vacuum pump to adsorb the wallboard on the working tread through the sealing groove; S3, using a single-sided pre-pointing process to pre-point the corrugated plate on the wallboard, and positioning the corrugated plate by contoured compression positioning; S4, spraying a layer of insulating paint on the surface of the tool to prevent the wallboard and the tool from sparking and burning the strong plate during pre-pointing; S5, a gantry is provided on the tool, and the gantry is used to realize the compression point fixation of the frame and the wallboard in the tire position. The wallboard described in the invention is installed on the carbon steel assembly welding basic platform in the form of adsorption, and can be laser-automatically welded without compression and positioning of the tool; compared with spot welding, after realizing laser automatic welding, the quality of the exposed surface is significantly improved.

Description

Technical Field

[0001] The present invention belongs to the field of rail vehicles, and particularly relates to a block side wall assembly welding tooling and process for laser welding structure. Background Art

[0002] In the field of rail vehicles, stainless steel car bodies are increasingly favored by various cities; currently, for the welding of stainless steel car bodies, metal inert gas arc welding (MAG) and tungsten inert gas welding (TIG) are mostly used. MAG welding can conveniently perform welding at various positions, and has the advantages of relatively fast welding speed (generally, the welding speed is 300 - 500 mm / min) and high deposition rate. However, due to the need for wire feeding and manual welding, the heat input is unstable, so welding defects such as welding slag, spatter, crater porosity, and surface cracks are likely to occur, and the heat affected zone is relatively large. TIG welding uses a pulsed arc, and by virtue of low heat input and uniform heat input at each point of the weld, it better realizes the control of the heat input amount; the weld connection is dense and the surface forming is beautiful. Although TIG is widely used in the welding of stainless steel, this method mainly has the following disadvantages: (1) The heat affected zone of the welded joint is wide, and a coarse grain zone is likely to appear, resulting in a reduction in the welding mechanical properties, a reduction in the elongation and fatigue properties of the welded joint; (2) The heat power of the tungsten inert gas arc is low, so the welding speed is relatively slow. Therefore, during the cooling process of the welded joint, the residence time in the dangerous temperature zone is long, and thus its welding deformation is large, and the corrosion resistance is poor; (3) The viscosity and surface tension of the liquid metal are relatively large, and gas holes are likely to be generated; the wettability of the weld metal is poor, and undercut is likely to occur on both sides of the weld.

[0003] In order to effectively improve the defects brought by MAG welding and TIG welding, laser welding technology has been increasingly widely applied and continuously developed and studied with its unique advantages. Laser welding technology has the advantages of relatively small shrinkage and deformation of the workpiece, continuous and repeatable welding, narrow weld bead and good surface quality, high weld strength, easy automation for accurately positioned welds, and generally faster welding speed than other welding processes. In order to realize the laser welding of the side wall part of the stainless steel car body, it is necessary to propose a tooling suitable for laser welding and a laser welding process. Summary of the Invention

[0004] In view of this, the present invention aims to propose a block side wall assembly welding tooling and process for laser welding structure to solve the tooling and process technical problems of laser welding of block side walls.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] A block side wall assembly welding process for laser welding structure includes the following steps:

[0007] S1. Use a welded frame and an aluminum plate contoured working tread as the main body of the tooling;

[0008] S2, milling out exhaust grooves and sealing grooves in the aluminum plate contoured working tread, placing the wallboard on the aluminum plate contoured working tread, and using a vacuum pump to adsorb the wallboard on the working tread through the sealing groove;

[0009] S3, using a single-sided pre-pointing technique to pre-point the corrugated plate on the wallboard, and positioning the corrugated plate by contour pressing and positioning;

[0010] S4. Spray a layer of insulating paint on the surface of the tooling to prevent sparks from burning the strong board between the wallboard and the tooling during pre-pointing;

[0011] S5. The tooling is equipped with a gantry, through which the frame is pressed and fixed with the wall panels at the fetal position.

[0012] A block side wall assembly welding tool for laser welding structure, comprising a carbon steel assembly welding base platform, a corrugated plate installed on the carbon steel assembly welding base platform, and a pressing device for pressing the corrugated plate;

[0013] The carbon steel assembly welding foundation platform is provided with an aluminum plate support, the aluminum plate support is provided with a plurality of exhaust holes, the plurality of exhaust holes are connected to a hollow pump, a wall panel is installed on the aluminum plate support, the wall panel is adsorbed on the carbon steel assembly welding foundation platform through a vacuum pump, the corrugated plate is pressed on the wall panel through a skeleton, the pressing device is installed around the wall panel, and the pressing device presses the corrugated plate and the skeleton;

[0014] A gantry clamping group is installed on the carbon steel welding foundation platform, and the gantry clamping group is used to spot-fix the skeleton and fix the corrugated plate on the upper carbon steel welding foundation platform for vertex.

[0015] The vacuum pumps are provided in plurality, and the bottom of the carbon steel welding base platform is provided with a plurality of sealed cavities, and the plurality of vacuum pumps are installed on the two side walls of the carbon steel welding base platform corresponding to the plurality of sealed cavities, and the plurality of vacuum pumps are respectively connected to the plurality of sealed cavities, and the exhaust holes extend into the sealed cavities of the carbon steel welding base platform, and the plurality of exhaust holes are communicated with the sealed cavities;

[0016] The top of the aluminum plate support is provided with an annular sealing groove, a sealing gasket is installed in the annular sealing groove, and the sealing gasket is protruding in the annular sealing groove;

[0017] The aluminum plate support is provided with a plurality of exhaust grooves, which are respectively communicated with the exhaust holes, and the annular sealing groove is located around the plurality of exhaust grooves and the plurality of exhaust holes.

[0018] Further, the clamping assembly includes a clamping member, and the clamping member includes a plug-in rod, a transverse rod, and an adjusting rod. One end of the plug-in rod is provided with a plug-in hole of the same size as the width of the transverse rod, one end of the transverse rod is plugged into the plug-in hole, and the other end of the transverse rod is provided with a threaded hole, and the adjusting rod is installed in the threaded hole. The transverse rod is vertically arranged with the plug-in rod, and the adjusting rod is vertically arranged with the transverse rod, and the adjusting rod is in a horizontal state with the plug-in rod.

[0019] An adjusting sleeve is installed near the end of the other end of the plug-in rod, and the internal diameter of the adjusting sleeve corresponds to the diameter of the plug-in rod. The other end of the plug-in rod is inserted in the adjusting sleeve, and an adjusting bolt is installed on the adjusting sleeve. The adjusting bolt passes through the adjusting sleeve and tightens the plug-in rod. A plurality of mounting holes are provided on the end surface of the carbon steel welding foundation platform, and the diameter of the mounting holes corresponds to the diameter of the plug-in rod. One end of the plug-in rod with the adjusting sleeve installed is inserted in the mounting hole, and the end surface of one end of the adjusting sleeve fits the end surface of the carbon steel welding foundation platform.

[0020] Furthermore, the clamping assembly also includes a corrugated plate positioning clamping plate, and the corrugated plate positioning clamping plate includes a pressing plate and a connector. The length of the pressing plate corresponds to the width of the corrugated plate, and the width of the skeleton corresponds to the width of the corrugated plate. The skeleton is pressed on top of the corrugated plate. A first groove corresponding to the texture of the corrugated plate is provided on the pressing plate. A third groove corresponding to the width of the skeleton frame is also provided on the pressing plate. The depth of the third groove is greater than the depth of the first groove. The skeleton is clamped in the third groove, and the texture of the corrugated plate is clamped in the first groove. The pressing plate is a U-shaped structure with bosses extending from both ends. There are two connectors. A second groove corresponding to the boss is provided on the top of the connector, and the boss is plugged into the second groove. A plug-in column is provided at the bottom of the connector, and the plug-in column corresponds to the diameter of the mounting hole, and the plug-in column is plugged into the mounting hole.

[0021] Furthermore, the clamping assembly also includes a clamping plate and a Z-shaped clamping piece. The clamping plate is Z-shaped, the size of the frame is smaller than the size of the wall panel, one end face of the clamping plate is attached to the frame edge of the frame, the other end face of the clamping plate is attached to the wall panel, one end face of the Z-shaped clamping piece is attached to the top end face of the clamping plate, and the other end face of the Z-shaped clamping piece is attached to the end face of the carbon steel welding base platform. Bolt holes are provided on the end face of the carbon steel welding base platform to which the Z-shaped clamping piece is attached, and the Z-shaped clamping piece fixes the corrugated plate and the frame to the carbon steel welding base platform through bolts.

[0022] Further, the gantry clamping group includes a gantry guide rail base, a lifting screw, and a gantry beam. The lifting screw is fixed above the gantry guide rail base. The gantry guide rail base is provided with two groups. The gantry beam is provided with two groups. The two groups of gantry beams are arranged in parallel. The two ends of the two groups of gantry beams are respectively connected to the lifting screw. The top of the lifting screw is provided with a rotating part.

[0023] A clamping device guide rail is provided on one group of gantry cross beams, a plurality of sliding clamping members are installed on the clamping device guide rail, a clamping foot is provided at the bottom of the sliding clamping member, the clamping foot is threadedly connected to the bottom of the sliding clamping member, a mounting block is provided on the sliding clamping member, the mounting block is rectangular, a clamping device guide groove is provided on the side wall of one side of the mounting block, and the clamping device guide groove is installed on the clamping device guide rail;

[0024] A through hole is provided on the mounting block, the sliding clamping piece passes through the mounting block, a first locking bolt is installed on the mounting block, one end of the first locking bolt passes through the mounting block to tighten the sliding clamping piece, a locking piece extends from the bottom of the mounting block, one end of the locking piece extends to the bottom of the beam, a second locking bolt is installed at one end of the locking piece, and the mounting block is locked on the guide rail of the clamping device.

[0025] Furthermore, a slide rail is provided on the side wall of the carbon steel welded base platform, a slide plate is provided on the gantry guide rail base, a slider is provided on the slider, a groove is provided on the slide rail, the size of the slider corresponds to the size of the groove, the slider is installed in the groove, and the gantry guide rail base is slidably connected to the slide rail.

[0026] Furthermore, a test bench and an electrical control cabinet are installed on the side walls of the carbon steel welded foundation platform.

[0027] Furthermore, the test bench includes a support seat, a fastening plate installed on the support seat, and a third locking bolt for fixing the fastening plate.

[0028] Compared with the prior art, the block side wall assembly welding tool and process for laser welding structure created by the present invention has the following advantages:

[0029] (1) The wall panels created by the present invention are installed on a carbon steel assembly welding base platform in the form of adsorption, and can be automatically laser welded without clamping or positioning of the tooling. Compared with spot welding, after automatic laser welding, the quality of the exposed surface is significantly improved; compatible welding of the driver's room module and small modules is achieved; the production rhythm of the workshop is met, the number of tooling requirements is saved, and the project investment cost is reduced.

[0030] (2) The present invention creates a test bench on the carbon steel assembly welding base platform to enable the test piece and the workpiece to operate in the same environment and under the same working conditions; saves labor costs and improves the credibility of the test piece quality; equips the carbon steel assembly welding base platform with a gantry for clamping to achieve point clamping and fixing of the frame and the wall panel in position; effectively improves the flatness of the block side wall and improves the production efficiency of the laser welding of the block side wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which form a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof are used to explain the present invention and shall not unduly limit the present invention. In the drawings:

[0032] Figure 1 It is a block sidewall assembly welding tooling and process drawing for a laser welding structure according to an embodiment of the present invention;

[0033] Figure 2 It is a structural diagram of a carbon steel assembly welding base platform according to an embodiment of the present invention;

[0034] Figure 3 It is a structural diagram of a carbon steel assembly welding base platform with corrugated plates according to an embodiment of the present invention;

[0035] Figure 4 It is a structure of a carbon steel assembly welding base platform with a pressing device and corrugated plates according to an embodiment of the present invention Figure 1 ;

[0036] Figure 5 It is a structure of a carbon steel assembly welding base platform with a pressing device and corrugated plates according to an embodiment of the present invention Figure 2 ;

[0037] Figure 6 It is a back view of a block sidewall assembly welding tooling and process for a laser welding structure according to an embodiment of the present invention;

[0038] Figure 7 It is a gantry structure diagram of a pressing component according to an embodiment of the present invention;

[0039] Figure 8 It is a partial gantry structure of a pressing component according to an embodiment of the present invention Figure 1 ;

[0040] Figure 9 It is a partial gantry structure of a pressing component according to an embodiment of the present invention Figure 2 .

[0041] Explanation of reference numerals:

[0042] 1. Carbon steel welded base platform; 2. Compression piece; 3. Vacuum pump; 4. Test bench; 5. Electrical control cabinet; 6. Gantry compression group; 7. Corrugated plate positioning and compression plate; 8. Corrugated plate; 9. Skeleton; 11. Aluminum plate support; 111. Exhaust hole; 112. Exhaust groove; 113. Annular sealing groove; 12. Mounting hole; 13. Wall panel; 14. Slide rail; 21. Insertion rod; 22. Transverse rod; 23. Adjusting rod; 24. Adjusting sleeve; 41. Support seat; 42. Compression bolt; 43. Fastening plate; 71. Corrugated groove; 72. Connector; 73. Pressure plate; 91. Edging plate; 92. Z-shaped pressing piece; 61. Gantry guide rail base; 612. Slide plate; 613. Slide block; 62. Lifting lead screw; 63. Rotating piece; 64. Gantry cross beam; 641. Compression device guide rail; 65. Sliding compression piece; 651. Compression foot; 652. Locking piece; 653. Locking bolt; 654. Compression device guide groove; 655. Mounting block. Detailed implementation mode

[0043] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0046] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0047] like Figures 1 to 9 As shown, a block side wall assembly welding process for a laser welding structure includes the following steps:

[0048] S1. Use a welded frame and an aluminum plate contoured working tread as the main body of the tooling;

[0049] S2, milling out exhaust grooves and sealing grooves in the aluminum plate contoured working tread, placing the wallboard on the aluminum plate contoured working tread, and using a vacuum pump to adsorb the wallboard on the working tread through the sealing groove;

[0050] S3, using a single-sided pre-pointing technique to pre-point the corrugated plate on the wallboard, and positioning the corrugated plate by contour pressing and positioning;

[0051] S4. Spray a layer of insulating paint on the surface of the tooling to prevent sparks from burning the strong board between the wallboard and the tooling during pre-pointing;

[0052] S5. The tooling is equipped with a gantry, through which the frame is pressed and fixed with the wall panels at the fetal position.

[0053] like Figures 1 to 9 As shown, a block side wall assembly welding tool for laser welding structure includes a carbon steel assembly welding base platform 1, a corrugated plate 8 installed on the carbon steel assembly welding base platform 1, and a pressing device for pressing the corrugated plate 8;

[0054] like Figures 2 to 4 The carbon steel assembly welding base platform 1 is provided with an aluminum plate support 11, and the aluminum plate support 11 is provided with a plurality of exhaust holes 111, and the plurality of exhaust holes 111 are connected to a hollow pump, and a wall panel 13 is installed on the aluminum plate support 11, and the wall panel 13 is adsorbed on the carbon steel assembly welding base platform 1 through a vacuum pump 3, and the corrugated plate 8 is pressed on the wall panel 13 through a skeleton 9, and the pressing device is installed around the wall panel 13, and the pressing device presses the corrugated plate 8 and the skeleton 9;

[0055] A gantry clamping group 6 is installed on the carbon steel welding base platform 1, and the gantry clamping group 6 is used to spot-fix the skeleton 9 and fix the corrugated plate 8 on the upper carbon steel welding base platform 1 for vertex.

[0056] like Figures 1 to 6 As shown, the vacuum pump 3 is provided in plurality, the bottom of the carbon steel welding base platform 1 is provided with a plurality of sealed cavities, the plurality of vacuum pumps 3 are installed on the two side walls of the carbon steel welding base platform 1 corresponding to the plurality of sealed cavities, the plurality of vacuum pumps 3 are respectively connected to the plurality of sealed cavities, the exhaust hole 111 extends into the sealed cavity of the carbon steel welding base platform 1, and the plurality of exhaust holes 111 are communicated with the sealed cavity;

[0057] The top of the aluminum plate support member 11 is provided with an annular sealing groove 113, a sealing gasket is installed in the annular sealing groove 113, and the sealing gasket protrudes from the sealing groove 113;

[0058] The aluminum plate support member 1111 is provided with a plurality of exhaust grooves 112, and the plurality of exhaust grooves 112 communicate with the exhaust holes 111 respectively. The annular sealing groove 113 is located around the plurality of exhaust grooves 112 and the plurality of exhaust holes 111;

[0059] The vacuum pump 3 is used to adsorb the sealing cavity at the bottom of the carbon steel welded base platform 1. The aluminum plate support member 11 is provided with an annular sealing groove 113, a sealing gasket is installed in the sealing groove 113, and the sealing gasket protrudes from the sealing groove 113. The wall panel 13 is placed on the sealing gasket. The annular sealing groove 113 is located around the plurality of exhaust holes 111, and exhaust grooves 112 are provided around the plurality of exhaust holes 111. The exhaust grooves 112 communicate with the plurality of exhaust holes 111 respectively. Through the adsorption of the vacuum pump 3, the wall panel 13 is adsorbed on the sealing gasket, and then the corrugated plate 8 is manually placed on the wall panel 13, and the skeleton 9 is placed above the corrugated plate 8, so that the skeleton 9 and the carbon steel welded base platform 1 form a pressing and spot welding point to weld the vertex of the corrugated plate 8...

[0060] As Figure 5 shown, the pressing assembly includes a pressing member 2. The pressing member 2 includes a plugging rod 21, a transverse rod 22, and an adjusting rod 23. One end of the plugging rod 21 is provided with a plugging hole having the same width as the transverse rod 22. One end of the transverse rod 22 is plugged in the plugging hole. The other end of the transverse rod 22 is provided with a threaded hole, and the adjusting rod 23 is installed in the threaded hole. The transverse rod 22 is perpendicular to the plugging rod 21, the adjusting rod 23 is perpendicular to the transverse rod 22, and the adjusting rod 23 is in a horizontal state with the plugging rod 21;

[0061] An adjusting sleeve 24 is installed near the end of the other end of the plugging rod 21. The inner diameter of the adjusting sleeve 24 corresponds to the diameter of the plugging rod 21. The other end of the plugging rod 21 is plugged in the adjusting sleeve 24. An adjusting bolt is installed on the adjusting sleeve 24, and the adjusting bolt penetrates through the adjusting sleeve 24 to tightly press the plugging rod 21. A plurality of mounting holes 12 are provided on the end face of the carbon steel welded base platform 1. The diameter of the mounting holes 12 corresponds to the diameter of the plugging rod 21. The end of the plugging rod 21 with the adjusting sleeve 24 is plugged in the mounting holes 12, and the end face of one end of the adjusting sleeve 24 is attached to the end face of the carbon steel welded base platform 1.

[0062] The clamping assembly can be adjusted in multiple directions. The clamping assembly and the carbon steel welded base platform 1 are plug-in connected. The height of the plug-in rod 21 can be controlled by adjusting the fastening bolts of the adjusting sleeve 24. The transverse rod 22 and the plug-in rod 21 are plug-in connected. The transverse rod 22 can be adjusted according to the width and pressure point of the skeleton 9 and the corrugated plate 8. The adjusting rod 23 is threadedly connected to one end of the transverse rod 22. The adjusting rod 23 is a threaded rod. The height of the adjusting rod 23 can be adjusted by rotating the adjusting rod 23. A pressure head is provided at one end of the adjusting rod 23, and the pressure head presses the skeleton 9. The length of the transverse rod 22 and the positioning point of the pressure head can be adjusted by directly pulling the transverse rod 22.

[0063] like Figure 4 and Figure 5 As shown, the clamping assembly also includes a corrugated plate positioning clamping plate 7, and the corrugated plate positioning clamping plate 7 includes a pressing plate 73 and a plug-in component 72. The length of the pressing plate 73 corresponds to the width of the corrugated plate 8, and the width of the skeleton 9 corresponds to the width of the corrugated plate 8. The skeleton 9 is pressed on the top of the corrugated plate 8. The pressing plate 73 is provided with a first groove corresponding to the texture of the corrugated plate 8. The pressing plate 73 is also provided with a third groove corresponding to the frame width of the skeleton 9. The depth of the third groove is greater than the depth of the first groove. The skeleton 9 is stuck in the third groove, and the texture of the corrugated plate 8 is stuck in the first groove. The pressing plate 73 is a U-shaped structure with bosses extending from both ends. The plug-in component 72 is provided with two, and the top of the plug-in component 72 is provided with a second groove corresponding to the boss, and the boss is plugged into the second groove. The bottom of the plug-in component 72 is provided with a plug-in column, and the plug-in column corresponds to the diameter of the mounting hole 12, and the plug-in column is plugged into the mounting hole 12.

[0064] like Figure 1 , Figure 3 , Figure 4 As shown, the clamping assembly also includes a clamping plate 91 and a Z-shaped clamping piece 92. The clamping plate 91 is Z-shaped. The size of the frame 9 is smaller than that of the wall panel 13. One end face of the clamping plate 91 is attached to the frame edge of the frame 9, and the other end face of the clamping plate 91 is attached to the wall panel 13. One end face of the Z-shaped clamping piece 92 is attached to the top end face of the clamping plate 91, and the other end face of the Z-shaped clamping piece 92 is attached to the end face of the carbon steel assembly welding basic platform 1. The Z-shaped clamping piece 92 is attached to the end face of the carbon steel assembly welding basic platform 1 and is provided with bolt holes. The Z-shaped clamping piece 92 fixes the corrugated plate 8 and the frame 9 to the carbon steel assembly welding basic platform 1 by bolts.

[0065] The corrugated plate 8 positioning and pressing plate 7 is provided with a first groove, which corresponds to the corrugations on the corrugated plate 8. The pressing plate 73 directly presses on the corrugated plate 8, and the corrugations on the corrugated plate 8 are clamped in the first groove. The corrugated plate 8 positioning and pressing plate 7 is directly inserted into the carbon steel group welding basic platform 1 through the connector 72. Since the corrugated plate 8 positioning and pressing plate 7 has a certain gravity, the corrugated plate 8 can be well fixed. There are multiple groups of corrugated plate 8 positioning and pressing plates 7, which are fixed according to the size of the corrugated plate 8 respectively.

[0066] As Figure 1 , Figures 7 to 9 shown, the gantry pressing group 6 includes a gantry guide rail base 61, a lifting lead screw 62, and a gantry cross beam 64. The lifting lead screw 62 is fixed above the gantry guide rail base 61;

[0067] The side wall of the carbon steel group welding basic platform 1 is provided with a slide rail 14. The gantry guide rail base 61 is provided with a slide plate 612, and the slide plate 612 is provided with a slider 613. The slide rail 14 is provided with a groove, and the size of the slider 613 corresponds to the size of the groove. The slider 613 is installed in the groove, and the gantry guide rail base 61 is slidably connected to the slide rail 14;

[0068] There are two groups of gantry guide rail bases 61, and there are two groups of gantry cross beams 64. The two groups of gantry cross beams 64 are arranged in parallel, and both ends of the two groups of gantry cross beams 64 are respectively connected to the lifting lead screw 62. The top of the lifting lead screw 62 is provided with a rotating part 63.

[0069] One group of the gantry cross beams 64 is provided with a pressing device guide rail 641. A plurality of sliding pressing parts 65 are installed on the pressing device guide rail 641. The bottom of the sliding pressing part 65 is provided with a pressing foot 651, and the pressing foot 651 is threadedly connected to the bottom of the sliding pressing part 65. The sliding pressing part 65 is provided with a mounting block 655. The mounting block 655 is rectangular. One side wall of the mounting block 655 is provided with a pressing device guide groove 654, and the pressing device guide groove 654 is installed on the pressing device guide rail 641;

[0070] The mounting block 655 is provided with a through hole, and the sliding pressing part 65 passes through the mounting block 655. A first locking bolt 653 is installed on the mounting block 655. One end of the first locking bolt 653 penetrates the mounting block 655 to press against the sliding pressing part 65. The bottom of the mounting block 655 extends with a locking part 652. One end of the locking part 652 extends to the bottom of the cross beam. A second locking bolt is installed at one end of the locking part 652, and the mounting block 655 is locked on the pressing device guide rail 641;

[0071] Two groups of gantry guide rail bases 61 are slidably connected to the side walls of the carbon steel welded base platform 1. The gantry guide rail base 61 is adjusted according to the pressure point of spot welding as needed, so that the gantry crossbeam 64 and the sliding clamping member 652 are located above the pressure point, and the lifting screw 62 is adjusted. The crossbeam drives the sliding clamping member 652 to clamp the corrugated plate 8, and the clamping foot 651 at the bottom of the sliding clamping member 652 is attached to the corrugated plate 8. Since there are multiple sliding clamping members 652, it cannot be guaranteed that the sliding clamping member 652 is pressed during the clamping process. Each sliding clamping member 652 can clamp the corrugated plate 8, so each sliding clamping member 652 is adjusted individually. The sliding clamping member 652 can slide on the clamping guide rail and be adjusted to an appropriate position. The mounting block 655 is fixed by fixing the locking member 652. The height of the sliding clamping member 652 can be adjusted by adjusting the locking bolt 653. The height of the clamping foot 651 can be adjusted by rotating the clamping foot 651. Multi-directional adjustment can make the clamping of the corrugated plate 8 more stable.

[0072] like Figures 1 to 6 As shown, a test bench 4 is installed on the side wall of the carbon steel assembly welding basic platform 1, and the test bench 4 includes a support seat 41, a fastening plate 43 installed on the support seat 41, and a third locking bolt for fixing the fastening plate 43;

[0073] The test bench 4 is provided for welding test pieces before welding the workpieces to ensure the welding quality of the workpieces.

[0074] An electrical control cabinet 5 is installed on the side wall of the carbon steel welding base platform 1, and the vacuum pump 3 is connected to the electrical control cabinet 5 through a line. The electrical switch inside the electrical control cabinet 5 is used to control the switch of the vacuum pump 3, the exhaust of the sealed chamber, the start and stop of the solenoid valve, etc.

[0075] The specific structure is as follows:

[0076] 1. The welded frame and aluminum plate contoured working tread are used as the main body of the tooling.

[0077] 2. Mill out exhaust grooves and sealing grooves in the aluminum plate contoured working tread for vacuum adsorption.

[0078] 3. In order to achieve the flatness of the tooling surface, reduce protruding points and thus reduce the risk of scratching the wall panels; remove the corrugated plate fixing and replace it with a portable contoured pressing and positioning device.

[0079] 4. A gantry is installed on the tooling to ensure that the frame is fixed at the tire position and the wall panels are pressed together.

[0080] 5. In order to fix the corrugated plate, the corrugated plate is pre-pointed on the wall panel to ensure that the pre-pointing is firm and does not affect the quality of the exposed surface. The vertex is a new process technique.

[0081] 6. To avoid the phenomenon of the wall panel being burned during pre-ignition, an insulating paint is sprayed on the surface of the tooling.

[0082] The profiled working surface of the aluminum plate is the aluminum plate support member 2.

[0083] As Figure 6 As shown, the carbon steel welded base platform 1 adopts an advanced structural form. The lower frame of the carbon steel welded base platform 1 can arrange air pipes, circuits, etc. The lower frame support device is paved with a carbon steel plate with an overall processing thickness of not less than 16 mm on the upper part, which is used to find the reference surface of the aluminum plate. The aluminum plate support member 11 is made of 7-series aluminum alloy (7075) with a thickness of not less than 30 mm. After the aluminum plates are assembled, they are processed as a whole to ensure the flatness of the tooling surface, and thus ensure the appearance quality of the exposed surface. The vacuum pump 3 is used for pumping and pressing to form a negative pressure in the sealed cavity to ensure the close fit between the wall panel and the tooling. The test bench 4 is used for welding test pieces before the workpiece welding to ensure the welding quality of the workpiece. The electrical control cabinet 5 is used to control the start and stop of the vacuum pump, the exhaust of the sealed cavity, the start and stop of the solenoid valve, etc. The gantry pressing group 6 is used for pre-point fixing of the module skeleton and the wall panel after the wall panel is welded. The plate positioning and pressing template 7 is used for the assembly positioning and pressing pre-point of the corrugated plate 8, and can be quickly disassembled after pre-point. The gantry guide rail base 61 cooperates with the slide rails 14 on both sides of the carbon steel welded base platform 1 to ensure the rapid movement of the gantry on the tooling. The gantry cross beam 64 is used to install the pressing device guide rail 641 and the sliding pressing member 65. The lifting lead screw 10 is used to adjust the height of the gantry cross beam 64 to achieve the rapid adjustment of the overall height of the sliding pressing. The sliding pressing member 65 realizes the height adjustment of the sliding pressing member 65 through the mounting block 655 and the pressing foot 651, and realizes the rapid adjustment of the height direction of a single sliding pressing member 65. The cooperation of the pressing device guide groove 654 and the pressing device guide rail 641 realizes the rapid longitudinal movement of a single pressing device.

[0084] The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A block side wall assembly welding process for a laser welding structure, characterized in that The following steps are involved: S1. Use a welded frame and an aluminum plate contoured working tread as the main body of the tooling; S2, milling out exhaust grooves and sealing grooves in the aluminum plate contoured working tread, placing the wallboard on the aluminum plate contoured working tread, and using a vacuum pump to adsorb the wallboard on the working tread through the sealing groove; S3, using a single-sided pre-pointing technique to pre-point the corrugated plate on the wallboard, and positioning the corrugated plate by contour pressing and positioning; S4. Spray a layer of insulating paint on the surface of the tooling to prevent electric sparks from burning the wallboard during pre-pointing; S5. The tooling is equipped with a gantry, through which the frame is pressed and fixed with the wall panels at the fetal position; The above-mentioned block side wall assembly welding tool for laser welding structure comprises a carbon steel assembly welding base platform (1), a corrugated plate (8) installed on the carbon steel assembly welding base platform (1), and a pressing device for pressing the corrugated plate (8); the carbon steel assembly welding base platform (1) is provided with an aluminum plate support (11), the aluminum plate support (11) is provided with a plurality of exhaust holes (111), and the plurality of exhaust holes (111) are connected to a hollow pump; the aluminum plate support (11) is installed with a wall panel (13), the wall panel (13) is adsorbed on the carbon steel assembly welding base platform (1) through a vacuum pump (3), the corrugated plate (8) is pressed on the wall panel (13) through a frame (9), the pressing device is installed around the wall panel (13), and the pressing device presses the corrugated plate (8) and the frame (9); A gantry pressing group (6) is installed on the carbon steel welding base platform (1), and the gantry pressing group (6) is used to spot-fix the frame (9) and fix the corrugated plate (8) on the upper carbon steel welding base platform (1) for vertexing; The vacuum pumps (3) are provided in plurality, the bottom of the carbon steel welding base platform (1) is provided with a plurality of sealed cavities, the plurality of vacuum pumps (3) are installed on the two side walls of the carbon steel welding base platform (1) corresponding to the plurality of sealed cavities, the plurality of vacuum pumps (3) are respectively connected to the plurality of sealed cavities, the exhaust holes (111) extend into the sealed cavities of the carbon steel welding base platform (1), and the plurality of exhaust holes (111) are in communication with the sealed cavities; The top of the aluminum plate support (11) is provided with an annular sealing groove (113), a sealing gasket is installed in the annular sealing groove (113), and the sealing gasket is protruding from the annular sealing groove (113); a plurality of exhaust grooves (112) are provided on the aluminum plate support (11), the plurality of exhaust grooves (112) are respectively connected to the exhaust holes (111), and the annular sealing groove (113) is located around the plurality of exhaust grooves (112) and the plurality of exhaust holes (111).

2. The block side wall assembly welding process for a laser welding structure according to claim 1, characterized in that: The clamping device comprises a clamping member (2), the clamping member (2) comprises a plug-in rod (21), a transverse rod (22), and an adjusting rod (23); one end of the plug-in rod (21) is provided with a plug-in hole having the same width as the transverse rod (22); one end of the transverse rod (22) is plugged into the plug-in hole; the other end of the transverse rod (22) is provided with a threaded hole; the adjusting rod (23) is installed in the threaded hole; the transverse rod (22) and the plug-in rod (21) are arranged vertically; the adjusting rod (23) and the transverse rod (22) are arranged vertically; and the adjusting rod (23) and the plug-in rod (21) are in a horizontal state; An adjusting sleeve (24) is installed near the other end of the plug rod (21), the inner diameter of the adjusting sleeve (24) corresponds to the diameter of the plug rod (21), the other end of the plug rod (21) is inserted into the adjusting sleeve (24), an adjusting bolt is installed on the adjusting sleeve (24), the adjusting bolt passes through the adjusting sleeve (24) and presses against the plug rod (21), a plurality of mounting holes (12) are provided on the end surface of the carbon steel welding base platform (1), the diameter of the mounting holes (12) corresponds to the diameter of the plug rod (21), one end of the plug rod (21) on which the adjusting sleeve (24) is installed is inserted into the mounting hole (12), and the end surface of one end of the adjusting sleeve (24) is in contact with the end surface of the carbon steel welding base platform (1).

3. The block side wall assembly welding process for a laser welding structure according to claim 1, characterized in that: The clamping device also includes a corrugated plate positioning clamping plate (7), the corrugated plate positioning clamping plate (7) including a pressing plate (73) and a plug-in connector (72), the length of the pressing plate (73) corresponds to the width of the corrugated plate (8), the width of the frame (9) corresponds to the width of the corrugated plate (8), the frame (9) is pressed on the top of the corrugated plate (8), the pressing plate (73) is provided with a first groove corresponding to the texture of the corrugated plate (8), the pressing plate (73) is also provided with a third groove corresponding to the frame width of the frame (9), the depth of the third groove is greater than the depth of the first groove, the frame (9) is clamped in the third groove, the texture of the corrugated plate (8) is clamped in the first groove, the pressing plate (73) is a U-shaped structure, with bosses extending from both ends, the plug-in connector (72) is provided with two, the top of the plug-in connector (72) is provided with a second groove corresponding to the boss, the boss is plugged into the second groove, and the bottom of the plug-in connector (72) is provided with a A plug-in column is provided, the plug-in column corresponds to the diameter of the mounting hole (12), and the plug-in column is plugged into the mounting hole (12).

4. The block side wall assembly welding process for a laser welding structure according to claim 1, characterized in that: The pressing device further includes a flanging plate (91) and a Z-shaped pressing member (92). The flanging plate (91) is Z-shaped. The size of the skeleton (9) is smaller than that of the wall panel (13). One end face of the flanging plate (91) is attached to the frame edge of the skeleton (9), and the other end face of the flanging plate (91) is attached to the wall panel (13). One end face of the Z-shaped pressing member (92) is attached to the top end face of the flanging plate (91), and the other end face of the Z-shaped pressing member (92) is attached to the end face of the carbon steel assembly welding base platform (1). The Z-shaped pressing member (92) is attached to the end face of the carbon steel assembly welding base platform (1) and is provided with bolt holes. The Z-shaped pressing member (92) fixes the corrugated plate (8) and the skeleton (9) on the carbon steel assembly welding base platform (1) through bolts.

5. The block side wall assembly welding process for a laser welding structure according to claim 1, characterized in that: The gantry pressing group (6) includes a gantry guide rail base (61), a lifting lead screw (62), and a gantry cross beam (64). The lifting lead screw (62) is fixed above the gantry guide rail base (61). There are two groups of the gantry guide rail bases (61), and there are two groups of the gantry cross beams (64). The two groups of gantry cross beams (64) are arranged in parallel, and both ends of the two groups of gantry cross beams (64) are respectively connected to the lifting lead screw (62). A rotating member (63) is provided at the top of the lifting lead screw (62); A pressing device guide rail (641) is provided on one group of the gantry cross beams (64). A plurality of sliding pressing members (65) are installed on the pressing device guide rail (641). A pressing foot (651) is provided at the bottom of the sliding pressing member (65). The pressing foot (651) is threadedly connected to the bottom of the sliding pressing member (65). An installation block (655) is provided on the sliding pressing member (65). The installation block (655) is rectangular. A pressing device guide groove (654) is provided on the side wall of one side of the installation block (655). The pressing device guide groove (654) is installed on the pressing device guide rail (641); The installation block (655) is provided with through holes. The sliding pressing member (65) passes through the installation block (655). A first locking bolt (653) is installed on the installation block (655). One end of the first locking bolt (653) passes through the top of the installation block (655) and presses against the sliding pressing member (65). A locking member (652) extends from the bottom of the installation block (655). One end of the locking member (652) extends to the bottom of the cross beam. A second locking bolt is installed at one end of the locking member (652). The installation block (655) is locked on the pressing device guide rail (641).

6. The block side wall assembly welding process for a laser welding structure according to claim 5, characterized in that: A slide rail (14) is provided on the side wall of the carbon steel assembly welding base platform (1). A slide plate (612) is provided on the gantry guide rail base (61). A slider (613) is provided on the slide plate (612). A groove is provided on the slide rail (14). The size of the slider (613) corresponds to the size of the groove. The slider (613) is installed in the groove. The gantry guide rail base (61) is slidably connected to the slide rail (14).

7. The block side wall assembly welding process for a laser welding structure according to claim 1, characterized in that: A test bench (4) and an electrical control cabinet (5) are installed on the side wall of the carbon steel assembly welding base platform (1).

8. The block side wall assembly welding process for a laser welding structure according to claim 7, characterized in that: The test bench (4) includes a support base (41), a fastening plate (43) mounted on the support base (41), and a third locking bolt for fixing the fastening plate (43).

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