Distribution box assembling and welding device and assembling and welding method thereof

Abstract

The invention discloses a distribution box assembling and welding device and an assembling and welding method thereof, and relates to the technical field of distribution box assembling. The distribution box assembling and welding device comprises a center shaft, two sets of welding guns symmetrically arranged on a machine shell relative to the center shaft in the axial direction, a moving assembly arranged in the machine shell and used for driving the two sets of welding guns to move synchronously and reversely, and angle adjusting assemblies arranged on the moving paths of the welding guns. The angle adjusting assembly enables the angle of the welding gun to be changed with movement of the welding gun as power, and the angle adjusting assembly can enable the welding gun to be opened by the needed angle. The center shaft serves as a welding zero point, the two sets of welding guns are driven to move towards the opposite welding seams of the distribution box and get close to the opposite welding seams of the distribution box in a reverse movement and welding angle self-adjusting mode, double welding work of the welding seams of the distribution box is achieved, the welding running path is shorter, synchronous welding work can be conducted on the two sets of welding seams of the distribution box at a time, the welding efficiency is improved, and meanwhile the welding efficiency is improved. And the welding quality can be greatly improved, and the welding accuracy is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution box assembly, and specifically to a distribution box assembly welding device and its assembly welding method. Background Technique

[0002] As an important part of power equipment, the distribution box realizes the safe and efficient operation of the power system by integrating functions such as distribution, protection, and monitoring, and is an indispensable core device in modern electrical engineering; the distribution box is usually produced and composed by welding, and with the improvement of production requirements, the traditional way of assembling the distribution box gradually develops from the assembly of the bottom plate and four side plates to the assembly of the bottom plate and two side plates. By using a bending device, the bottom plate of the distribution box and the long sides or short sides on both sides are integrally bent into a U-shaped structure, and then the missing long sides or short sides are inserted into the openings on both sides of the U-shaped, and the corresponding welding process can be used to integrally weld and form it.

[0003] For example, the Chinese patent with the publication number CN116532858B discloses an automatic welding device for the production of distribution boxes. Such a distribution box welding device loads the distribution box on a turntable, uses a lifting mechanism to drive the lifting of the distribution box on the turntable, and a first adjustment mechanism to drive the segmented rotation of the distribution box on the turntable, so that the weld of the distribution box is close to the welding torch, and then uses a second adjustment mechanism to drive the up and down movement of the welding torch to realize the welding and assembly work of the distribution box.

[0004] However, the existing method of using multi-mechanism linkage cooperation to align the welding torch with the weld of the distribution box for welding has a long welding travel path, a long welding time, and the multi-segment travel path is prone to deviation in the alignment of the welding path, resulting in the welding quality not being fully guaranteed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a distribution box assembly welding device and its assembly welding method, which solves the problems raised in the background technique.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: On the one hand, the present invention provides a distribution box assembly welding device, including: a central axis; a machine shell, the machine shell is arranged on the central axis through a side support seat; welding torches, two groups of welding torches are symmetrically arranged on the machine shell with respect to the axial direction of the central axis; a moving component, the moving component is arranged inside the machine shell, and the moving component is used to drive the two groups of welding torches to move synchronously and in opposite directions; an angle adjustment component, the angle adjustment component is located on the moving path of the welding torch, the angle adjustment component uses the movement of the welding torch as power to change the angle of the welding torch, and the angle adjustment component can make the welding torch open the required angle.

[0007] Further, it further includes a rotating shaft provided on the welding torch, and the rotating shaft rotates itself to control the angle of the welding torch; the angle adjustment assembly includes: a fixed seat assembled at one end of the rotating shaft away from the welding torch; a driving gear located on the fixed seat for driving the rotating shaft to rotate; a driving tooth row located on the moving path of the welding torch and meshing with the driving gear; the driving tooth row is arranged in a split manner along the moving path of the welding torch, and each driving tooth row can selectively mesh with the driving gear.

[0008] Further, it further includes: an adjusting gear provided at the midline position of the interval between the two rows of driving tooth rows, and two groups of adjusting racks are meshed with the upper and lower ends of the adjusting gear in a staggered manner; an adjusting push plate, which is provided in two groups, and the two groups of adjusting push plates are arranged on the two groups of adjusting racks in a staggered manner and respectively slide into the upper and lower ends of the two rows of driving tooth rows.

[0009] Further, a pressure-bearing sliding groove adapted to the adjusting push plate is opened on the driving tooth row, and one end of the adjusting push plate is provided with an inclined surface that slides into the pressure-bearing sliding groove, so that after the inclined surface abuts along the pressure-bearing sliding groove, the inclined surface gradually pushes forward the pressure-bearing sliding groove until the adjusting push plate slides in and fixedly drives the driving tooth row forward.

[0010] Further, a support plate is provided on the back plate of the driving tooth row, an arm force guide rod for supporting the driving tooth row penetrates through the support plate, and a return spring for pushing the driving tooth row forward and then resetting it is provided on the arm force guide rod.

[0011] Further, it further includes: a transmission worm wheel installed on the rotating shaft and a transmission worm installed on the fixed seat along the moving direction of the welding torch, the transmission worm wheel meshes with the transmission worm, and the transmission worm and the driving gear are coaxial, so that the rotating shaft forms a primary self-locking.

[0012] Further, it further includes a locking block provided at the other end of the rotating shaft and a locking slide rail with the staggered driving tooth row arranged on the displacement track of the locking block; the locking slide rail is provided with a locking slide groove opposite to the locking block along the direction of its guide rail; the locking block is a regular polygon structure, and the number of positive sides of the locking block is an even number, so that when the meshing force between the driving gear and the rack of the driving tooth row is converted into a rated rotational force to push the rotating shaft to rotate quantitatively, the positive sides of the locking block rotate quantitatively synchronously with the rotating shaft and always maintain the state of being aligned up and down and slide into the locking slide groove to form a secondary self-locking.

[0013] Further, a welding alignment component for driving the welding torch to rotate and lift is provided at one axial end of the central axis. It is used to drive the two groups of welding torches to rotate to the position where the opposite welds of the distribution box are flush, and control the lifting displacement of the two groups of welding torches to perform double welding on the welds. Among them: The welding alignment component includes: a screw jack, which is arranged at one axial end of the central axis. The screw jack is fixedly connected to the central axis through a suspension support seat, so that the screw of the screw jack stretches and drives the welding torch to lift and displace to the weld of the distribution box; a fixed gear, which is fixedly arranged on the central axis, and a moving gear is engaged on one side of the fixed gear, so that the moving gear meshes and drives along the circumferential direction of the fixed gear, driving the two groups of welding torches to rotate around the central axis to the position where the welds of the distribution box are flush.

[0014] Further, a welding table component for supporting the distribution box and driving the displacement of the distribution box is provided at the other axial end of the central axis. It is used to drive the distribution box to translate and double weld relative to the welding torch. Among them: The welding table component includes a track frame, which is arranged at the other axial end of the central axis. A support slide is arranged on the track frame, and a tooling mold is arranged on the support slide, so that the support slide pushes the tooling mold to displace, driving the distribution box in the tooling mold to translate and weld along the welding torch.

[0015] On the other hand, the present invention also provides a method for assembling and welding a distribution box, including the following steps: Step 1: Load the distribution box into the tooling mold and align the central part of the distribution box with the central axis; Step 2: The two groups of welding torches move synchronously in the opposite direction and move towards the included angle weld of the distribution box. At the initial stage of the movement, driven by the movement, the two groups of welding torches are driven to open in the opposite direction to the welding angle required for the included angle weld; Step 3: The two groups of welding torches lift and brake to achieve double welding of the included angle weld of the distribution box. After one group finishes welding the included angle weld, it rotates to the position of the other group of included angle welds for double welding again; Step 4: The two groups of welding torches move closer to the central axis to reset and zero. Then, in the same way as in Step 2, the two groups of welding torches are driven to move towards the horizontal weld of the distribution box and open in the opposite direction to the welding angle required for the horizontal weld; Step 5: The two groups of welding torches lift and brake to approach the horizontal weld. At this time, the tooling mold pushes the distribution box to translate, realizing double welding of the horizontal weld of the distribution box.

[0016] The present invention has the following beneficial effects: (1) For this distribution box assembling and welding device, by using the central axis as the welding zero point, driving the two groups of welding torches to move in the opposite direction and self-adjust the welding angle, and move closer to the opposite welds of the distribution box, the double welding work of the distribution box welds is realized. While the welding travel path is shorter, the two groups of welds of the distribution box can be synchronously welded at one time. While improving the welding efficiency, the welding quality can be greatly improved, ensuring the welding accuracy.

[0017] (2)The distribution box assembly and welding device, through the linkage combination of the moving component and the angle adjustment component, can not only adjust and align the welding positions of the two groups of welding torches, but also adjust and align the welding angles of the two groups of welding torches, enabling the welding torches to handle the welding and assembly work of distribution boxes of different sizes, with more diversified welding adaptability and better flexibility in use.

[0018] (3)The distribution box assembly and welding device, by arranging the angle adjustment component on the moving path of the welding torch, for the adjustment of the welding angle of the welding torch, can use the moving component as the power source to drive the welding torch to self-adjust the required welding angle without the need to rely on external forces, and its self-adjustment is more convenient and efficient.

[0019] (4)The distribution box assembly and welding device, by using the reverse adjustment and alignment of the two groups of welding torches, can not only achieve double welding of the included angle welds of the distribution box, but also achieve double welding of the horizontal welds of the distribution box, and realize the welding of the assembly welds of the distribution box with a double-welding travel path. The variable displacement required for welding is smaller, and the welding duration is shorter, which can greatly improve the welding quality and welding efficiency.

[0020] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is an assembly schematic diagram of the welding torch and the machine shell in the present invention; Figure 3 is an assembly schematic diagram of the welding torch and the machine shell in the present invention (rear view angle); Figure 4 is an assembly schematic diagram of the moving component, the welding torch and the machine shell in the present invention; Figure 5 is a first schematic structural diagram of the moving component and the welding torch in the present invention; Figure 6 is a second schematic structural diagram of the moving component and the welding torch in the present invention; Figure 7 is an assembly schematic diagram of the angle adjustment component, the welding torch and the machine shell in the present invention; Figure 8 is a first schematic structural diagram of the angle adjustment component in the present invention; Figure 9 is a second schematic structural diagram of the angle adjustment component in the present invention; Figure 10 is an assembly schematic diagram of the welding torch and the rotating shaft in the present invention; Figure 11 is a schematic structural diagram of the primary self-locking of the welding torch and the rotating shaft in the present invention; Figure 12 Schematic diagram of the secondary self-locking structure of the welding torch and the rotating shaft in the present invention; Figure 13 First schematic diagram of the welding alignment component in the present invention; Figure 14 Second schematic diagram of the welding alignment component in the present invention; Figure 15 Schematic diagram of the welding table component in the present invention; Figure 16 Schematic diagram of the welding of the included angle weld by the distribution box in the present invention; Figure 17 Schematic diagram of the welding of the horizontal weld of the distribution box in the present invention.

[0022] In the figure, 1, central axis; 2, housing; 3, rotating seat; 4, welding torch; 5, tooling mold; 6, support slide; 7, track frame; 8, screw jack; 9, first motor; 10, second motor; 11, first guide rail; 12, first slide; 13, support table; 14, second guide rail; 15, second slide; 16, alignment rack; 17, driving gear; 18, transfer gear; 19, braking gear; 20, fixed seat; 21, driving gear; 22, driving tooth row; 221, pressure-bearing chute; 23, locking slide rail; 24, adjusting gear; 25, adjusting rack; 26, adjusting push plate; 261, inclined surface; 27, reset structure; 271, support plate; 272, arm force guide rod; 273, reset spring; 28, rotating shaft; 29, driving worm gear; 30, driving shaft; 31, driving worm; 32, locking block; 33, locking chute; 34, side support seat; 35, hanging support seat; 36, third motor; 37, moving gear; 38, fixed gear; 39, track lead screw; 40, fourth motor. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0025] Please refer toFigures 1 - 17 , an embodiment of the present invention provides a technical solution: a distribution box assembly welding device and its assembly welding method.

[0026] On the one hand, the present invention provides a distribution box assembly welding device.

[0027] Please refer to Figure 1 , Figure 13 , Figures 16 - 17 , the distribution box assembly welding device includes a central axis 1, a machine shell 2 rotatably arranged on the central axis 1 through a side support seat 34, two groups of welding torches 4 axially symmetrically arranged on the machine shell 2 relative to the central axis 1, a moving component arranged in the machine shell 2, the moving component is used to drive the two groups of welding torches 4 to move synchronously and reversely, and an angle adjustment component arranged on the moving path of the welding torch 4, the angle adjustment component uses the movement of the welding torch 4 as a power source to change the angle of the welding torch 4. When welding the distribution box, based on the braking of the moving component, the two groups of welding torches 4 are driven to move synchronously and reversely along the machine shell 2, and move closer to the diagonal welds of the distribution box (preferably weld the diagonal angle welds of the distribution box first. Since the diagonal angle welds of the distribution box form an "X" - shaped structure and the spacing between the diagonal angle welds is the same, the two groups of welding torches 4 only need to adjust the angle and displacement once to complete the double - welding process of the diagonal angle welds of the distribution box. Moreover, in this welding process, the distribution box does not need to move, which can save the welding braking path and reduce the welding deviation caused by movement. Then weld the horizontal welds of the distribution box. In this welding process, the distribution box only needs to move horizontally to complete the welding of the horizontal welds of the distribution box, minimizing the welding deviation caused by displacement), and while moving reversely, the angle adjustment component uses the braking force of the moving component as a power source to drive the two groups of welding torches 4 to self - adjust the required welding angle. Without the help of external force, the welding angle can be self - adjusted along with the movement of the two groups of welding torches 4 to flexibly adapt to the welding angle requirements of the distribution box welds.

[0028] Please refer to Figures 2 - 6, to achieve the synchronous reverse movement of the two groups of welding torches 4, the moving assembly includes a transmission gear 17 provided at the central part of the machine housing 2. Two groups of alignment racks 16 are meshed in a staggered manner at the upper and lower ends of the transmission gear 17. Support platforms 13 for supporting the rotating shaft 28 are respectively provided at one ends of the two groups of alignment racks 16. A second motor 10 for driving the transmission gear 17 is provided in the middle of the back plate of the machine housing 2. When driving the two groups of welding torches 4 to move in the reverse direction, the second motor 10 drives the braking gear 19 at its output end to rotate. By using the meshing transmission between the braking gear 19 and the intermediate gear 18 on one side of the transmission gear 17, the transmission gear 17 is driven to rotate, generating an upper and lower staggered meshing thrust with the two groups of alignment racks 16, pushing the two support platforms 13 to displace synchronously in the reverse direction, and then pushing the two groups of welding torches 4 fixed on the rotating shaft 28 through the rotating seats 3 to move synchronously in the reverse direction, approaching the opposite welds of the distribution box. Moreover, while pushing the two groups of welding torches 4 to move in the reverse direction, the reverse thrust can also serve as the braking thrust of the rotating shaft 28, driving the rotating shaft 28 to rotate relative to the angle adjustment assembly, and promoting the self-adjustment and alignment of the welding angles of the two groups of welding torches 4.

[0029] It should be noted that the moving assembly further includes a first guide rail 11 provided on the machine housing 2, a first sliding table 12 provided on the first guide rail 11 for fixing the support platform 13, a second guide rail 14 provided on one side of the support platform 13, and a second sliding table 15 provided on the alignment rack 16 along the second guide rail 14. While the two support platforms 13 move in the reverse direction, through the track combination of the first guide rail 11 and the first sliding table 12, a primary support and guidance is provided for the two support platforms 13, and through the track combination of the second guide rail 14 and the second sliding table 15, a secondary support and guidance is provided for the two support platforms 13. Moreover, the track combination of the second guide rail 14 and the second sliding table 15 can also play a guiding and limiting role in the meshing transmission between the alignment rack 16 and the transmission gear 17, making the meshing transmission of the alignment rack 16 along the transmission gear 17 more stable.

[0030] Please refer to Figures 7 - 11 , to achieve the adjustment of the welding angles of the two groups of welding torches 4, the angle adjustment assembly includes a fixed seat 20 assembled at one end of the rotating shaft 28 away from the welding torch 4. A driving gear 21 is provided on the fixed seat 20, and a driving tooth row 22 is provided on the moving path of the welding torch 4 and meshes with the driving gear 21. The driving tooth row 22 is arranged in a split manner along the moving path of the welding torch 4, and each driving tooth row 22 can selectively mesh with the driving gear 21. Since the welding torch 4 is fixed on the rotating shaft 28 through the rotating seat 3, at this time, by controlling the number of forward pushes of the driving tooth row 22, when the welding torch 4 starts to move, the driving gear 21 is pushed to maintain meshing transmission with the forward-pushed driving tooth row 22, forming a meshing state of a specified length, generating torque transmission under the rated state, transmitting the torque force to the driving shaft 30 through the driving gear 21, and enabling the driving shaft 30 to push the rotating shaft 28 to rotate quantitatively, rotating the welding torch 4 to the specified welding angle.

[0031] As a further solution of this embodiment, the angle adjustment assembly further includes an adjustment gear 24 provided at the midline position between the two rows of drive tooth rows 22. Two sets of adjustment racks 25 are meshed with the upper and lower ends of the adjustment gear 24 in a staggered manner, and two sets of adjustment push plates 26 are staggeredly provided on the two sets of adjustment racks 25 and respectively slide into the upper and lower ends of the two rows of drive tooth rows 22. A pressure-bearing chute 221 adapted to the adjustment push plate 26 is provided on the drive tooth row 22. One end of the adjustment push plate 26 is provided with an inclined surface 261 that slides into the pressure-bearing chute 221. When the drive tooth row 22 is pushed forward, at this time, the first motor 9 provided on the back plate of the machine housing 2 works to drive the adjustment gear 24 to rotate. By using the meshing transmission between the adjustment gear 24 and the two sets of adjustment racks 25, an alternating thrust is generated to push the two sets of adjustment push plates 26 towards the two rows of drive tooth rows 22. While approaching, the inclined surface 261 thereof abuts against the pressure-bearing chute 221 of the drive tooth row 22, and under the continuous thrust, the inclined surface 261 gradually pushes forward the pressure-bearing chute 221 until the adjustment push plate 26 slides into the pressure-bearing chute 221 to push the drive tooth row 22 forward and fix it. Then, in this way, by controlling the extension length of the adjustment push plate 26, it slides into a specified number of drive tooth rows 22 to push forward a specified number of drive tooth rows 22 to generate a specified length of meshing transmission with the drive gear 21.

[0032] In addition, a support plate 271 fixedly provided on the machine housing 2 is provided on the back plate of the drive tooth row 22. An arm force guide rod 272 for supporting the drive tooth row 22 is provided through the support plate 271. A return spring 273 for pushing the drive tooth row 22 forward and then resetting it is provided on the arm force guide rod 272. Through the return structure 27 composed of the support plate 271, the arm force guide rod 272, and the return spring 273, after the adjustment push plate 26 slides out of the drive tooth row 22 subsequently, the arm force guide rod 272 drives the drive tooth row 22 to self-reset under the elastic force of the return spring 273.

[0033] Please refer to Figures 10 - 12 , to achieve the self-locking fixation after the welding angle of the two welding torches 4 is adjusted. The self-locking fixation includes a transmission worm gear 29 installed on the rotating shaft 28 and a transmission worm 31 installed on the fixed seat 20 along the moving direction of the welding torch 4. The transmission worm gear 29 is meshed with the transmission worm 31. The transmission worm 31 and the drive gear 21 are coaxial, so that the rotating shaft 28 forms a primary self-locking. By using the meshing transmission between the transmission worm 31 and the transmission worm gear 29, on the one hand, a transmission source is formed to transmit the rotational force of the drive gear 21 to the drive shaft 30 to the rotating shaft 28 through the meshing transmission between the transmission worm 31 and the transmission worm gear 29 to drive the adjustment of the welding angle of the welding torch 4. On the other hand, a self-locking state is formed. By using the unique self-locking function of the worm and worm gear, the rotating shaft 28 has a self-locking function to perform a primary self-locking fixation on the adjusted angle of the welding torch 4 to improve the stability of the displacement welding of the welding torch 4.

[0034] Moreover, the self-locking fixation further includes a locking block 32 provided at the other end of the rotating shaft 28 and a locking slide rail 23 provided with an interleaved drive tooth row 22 on the displacement track of the locking block 32. The locking slide rail 23 is provided with a locking chute 33 opposite to the locking block 32 along the direction of its guide rail. The locking block 32 has a regular polygon structure, and the number of regular sides of the locking block 32 is even. Since the meshing transmission between the driving gear 21 and each drive tooth row 22 is a rated transmission, the meshing thrust converted into the rotational force on the rotating shaft 28 is a rated thrust, which pushes the rotating shaft 28 to rotate quantitatively. The rotating shaft 28 rotates a quantitative angle each time. At this time, the inner angle of the regular side of the locking block 32 is set to the same value as the single rotation angle of the rotating shaft 28 (for example, if the rotating shaft 28 rotates 30° each time, the locking block 32 is set to a regular dodecagon structure at this time, and each inner angle of its regular side is 30°, and it rotates one regular side synchronously with the rotating shaft 28 each time), so that the regular side of the locking block 32 rotates synchronously and quantitatively with the rotating shaft 28 by the same angle. And by setting the regular side of the locking block 32 to an even number, after the locking block 32 rotates synchronously with the rotating shaft 28, it can always maintain the state where the regular sides are aligned up and down (by setting the regular side of the locking block 32 to an even number, the two regular sides opposite to each other with respect to the center always remain horizontal, and then after each rotation of the regular side, its regular sides can always maintain the up-and-down horizontal state). After the rotating shaft 28 drives the angle adjustment of the welding torch 4, when the locking block 32 contacts the locking slide rail 23 subsequently, it smoothly enters the locking chute 33. By using the sliding limit of the locking slide rail 23 on the locking block 32, the rotating shaft 28 is locked and limited, and the adjusted angle of the welding torch 4 is secondarily self-locked and fixed, further improving the stability of the welding torch 4 during the welding displacement process.

[0035] Please refer to Figures 13 - 14, to achieve variable displacement when two groups of welding torches 4 weld the welds of the distribution box, a welding alignment component for driving the rotation and lifting of the welding torch 4 is provided at one axial end of the central shaft 1. The welding alignment component is used to drive the two groups of welding torches 4 to rotate to the position where the opposite welds of the distribution box are flush. The welding alignment component includes a fixed gear 38 provided on the central shaft 1. A moving gear 37 is engaged on one side of the fixed gear 38, and a third motor 36 for supporting the moving gear 37 is provided on the side support seat 34. After self-adjusting and aligning the welding positions and angles of the two groups of welding torches 4, by controlling the operation of the third motor 36, the moving gear 37 is driven to rotate, so that the moving gear 37 meshes and transmits along the circumferential direction of the fixed gear 38, driving the two groups of welding torches 4 on the machine shell 2 to rotate around the central shaft 1 to the position where the welds of the distribution box are flush (since the welding torch 4 first welds the opposite angle welds of the distribution box, at this time, the two groups of welding torches 4 first rotate circumferentially around the central shaft 1 to one of the opposite angle welds of the distribution box. After the welding of one of the opposite angle welds is completed, without adjusting the welding position and angle of the welding torch 4, it can be rotated to the other opposite angle weld for welding again to reduce the welding deviation caused by large displacement during the welding process. Then, by moving the two groups of welding torches 4 close to the central shaft 1 to reset and zero, the welding torch 4 is zeroed and aligned after each single welding to ensure the accuracy of the welding displacement braking each time. Then, it moves in the reverse direction and adjusts the welding angle again. After aligning with the horizontal weld of the distribution box, the two groups of welding torches 4 are driven to rotate circumferentially around the central shaft 1 to the horizontal weld of the distribution box. After welding the horizontal weld, the overall welding work of the distribution box can be completed, reducing the large welding movement stroke during traditional welding), so that the welds opposite to the two groups of welding torches 4 and the distribution box are kept aligned for the double-welding process.

[0036] As a further solution of this embodiment, the welding alignment component is also used to control the lifting displacement of the two groups of welding torches 4 to perform double welding on the welds. The welding alignment component further includes a screw jack 8 provided at one axial end of the central shaft 1. The screw jack 8 is fixedly connected to the central shaft 1 through a suspension support seat 35. Utilizing the screw lifting characteristic of the screw jack 8, the two groups of welding torches 4 are driven to lift and displace to the opposite welds of the distribution box for double-welding work (when welding the opposite angle welds of the distribution box, control the two groups of welding torches 4 to lift and displace along the opposite angle welds of the distribution box to perform double welding on the welds. When welding the horizontal weld of the distribution box, control the two groups of welding torches 4 to move down close to the horizontal weld and wait for the distribution box to translate for welding).

[0037] Please refer to Figure 15, To achieve variable displacement during the welding of the horizontal weld of the distribution box, a welding table assembly for supporting the distribution box and driving its displacement is provided at the axial other end of the central shaft 1, which is used to drive the distribution box to translate and double-weld relative to the welding torch 4. Among them, the welding table assembly includes an orbital frame 7, which is arranged at the axial other end of the central shaft 1. A support slide 6 is provided on the orbital frame 7, and a tooling mold 5 is provided on the support slide 6. After the two groups of welding torches 4 are displaced and close to the horizontal weld of the distribution box, the fourth motor 40 arranged at one end of the orbital frame 7 drives the rotation of the output end orbital lead screw 39, converts the rotational thrust into a horizontal thrust, pushes the support slide 6 to translate along the orbital frame 7, and then pushes the tooling mold 5 to displace, so that the distribution box in the tooling mold 5 translates along the welding torch 4 for double-welding (since the distribution box in the tooling mold 5 remains stationary before the welding of the horizontal weld, the center of the distribution box is always directly opposite to the central shaft 1. At this time, the two groups of welding torches 4 are directly opposite to the central part of the horizontal weld of the distribution box. Then, by reciprocating the distribution box left and right along the welding torch 4, the double-welding of the horizontal weld of the distribution box can be completed, maximizing the reduction of the welding size deviation caused by the frequent displacement of the distribution box).

[0038] On the other hand, the present invention also provides an assembly and welding method for an assembly and welding device of a distribution box, including the following steps: Step 1: The distribution box is loaded into the tooling mold 5, and the central part of the distribution box is aligned with the central shaft 1; Step 2: The two groups of welding torches 4 move synchronously and in opposite directions, move towards the included angle weld of the distribution box, and at the initial stage of the movement, driven by the movement, the two groups of welding torches 4 are driven to open in opposite directions to the welding angle required for the included angle weld; Step 3: The two groups of welding torches 4 are lifted and braked to achieve double-welding of the included angle weld of the distribution box, and after one group finishes welding the included angle weld, it rotates to the other group to perform double-welding again; Step 4: The two groups of welding torches 4 move towards the central shaft 1 to reset and zero, and then in the same way as in Step 2, the two groups of welding torches 4 are driven to move towards the horizontal weld of the distribution box and open in opposite directions to the welding angle required for the horizontal weld; Step 5: The two groups of welding torches 4 are lifted and braked to approach the horizontal weld. At this time, the tooling mold 5 pushes the distribution box to translate to achieve double-welding of the horizontal weld of the distribution box.

Claims

1. A distribution box assembly and welding device, characterized in that, include: Central axis (1); A casing (2), wherein the casing (2) is arranged on the central axis (1) via a side support seat (34); Welding guns (4), the welding guns (4) being arranged in two groups, and the two groups of welding guns (4) being arranged on the housing (2) in an axially symmetrical manner relative to the central axis (1); A moving assembly, the moving assembly being arranged in the housing (2), and being used to drive the two groups of welding guns (4) to move synchronously in opposite directions; An angle adjustment component is located on a moving path of the welding gun (4). The angle adjustment component uses the movement of the welding gun (4) as a driving force to change the angle of the welding gun (4), and the angle adjustment component can open the welding gun (4) to a desired angle.

2. The assembly and welding device for a distribution box according to claim 1, wherein: It also includes a rotating shaft (28), which is arranged on the welding gun (4), and the rotating shaft (28) rotates to control the angle of the welding gun (4); The angle adjustment component comprises: A fixed seat (20), the fixed seat (20) being mounted on an end of the rotating shaft (28) away from the welding gun (4); A driving gear (21), the driving gear (21) is located on the fixed seat (20) and is used to drive the rotating shaft (28) to rotate; A driving gear row (22), the driving gear row (22) is located on the moving path of the welding gun (4) and meshes with the driving gear (21); The drive gear rows (22) are arranged in a split manner along the moving path of the welding gun (4), and each drive gear row (22) can selectively mesh with the drive gear (21).

3. The assembly and welding device for a distribution box according to claim 2, characterized in that: Also includes: An adjusting gear (24), the adjusting gear (24) being arranged at the midline position of the interval between the two rows of driving gears (22), and two sets of adjusting racks (25) being staggeredly meshed at the upper and lower ends of the adjusting gear (24); The adjusting push plates (26) are arranged in two groups. The two groups of adjusting push plates (26) are staggeredly arranged on the two groups of adjusting racks (25) and slide into the upper and lower ends of the two rows of driving gears (22) respectively.

4. The assembly and welding device for a distribution box according to claim 3, characterized in that: The driving gear row (22) is provided with a pressure-bearing slide groove (221) adapted to the adjusting push plate (26), and one end of the adjusting push plate (26) is provided with an inclined surface (261) that slides into the pressure-bearing slide groove (221), so that after the inclined surface (261) is pressed along the pressure-bearing slide groove (221), the inclined surface (261) gradually pushes the pressure-bearing slide groove (221) forward until the adjusting push plate (26) slides into and pushes the fixed driving gear row (22).

5. The assembly and welding device for a distribution box according to claim 4, characterized in that: The back plate of the driving gear row (22) is provided with a support plate (271), an arm force guide rod (272) supporting the driving gear row (22) is provided through the support plate (271), and a return spring (273) is provided on the arm force guide rod (272) for pushing the driving gear row (22) forward and then returning it to its original position.

6. A distribution box assembly and welding device according to any one of claims 2-5, characterized in that: Also includes: A transmission worm wheel (29) is mounted on the rotating shaft (28) and a transmission worm (31) is mounted on the fixed seat (20) along the moving direction of the welding gun (4). The transmission worm wheel (29) meshes with the transmission worm (31), and the transmission worm (31) is coaxial with the driving gear (21), so that the rotating shaft (28) forms a primary self-locking.

7. A distribution box assembly and welding device according to claim 6, characterized in that : It also includes a locking block (32) provided at the other end of the rotating shaft (28) and a locking slide rail (23) where the staggered drive tooth row (22) is provided on the displacement track of the locking block (32). The locking slide rail (23) is provided with a locking chute (33) opposite to the locking block (32) along the direction of its guide rail; The locking block (32) has a regular polygon structure, and the number of regular sides of the locking block (32) is even. When the meshing force between the driving gear (21) and the rack of the drive tooth row (22) is converted into a rated rotational force to push the rotating shaft (28) to rotate quantitatively, the regular sides of the locking block (32) rotate quantitatively synchronously with the rotating shaft (28), and always maintain the state of the upper and lower regular sides aligned and slide into the locking chute (33) to form secondary self-locking.

8. A power distribution box assembly and welding device according to claim 7, characterized in that: One axial end of the central shaft (1) is provided with a welding alignment component for driving the welding torch (4) to rotate and lift, which is used to drive the two groups of welding torches (4) to rotate to the position where the opposite welds of the distribution box are flush, and control the lifting displacement of the two groups of welding torches (4) to perform double welding on the welds. Among them: The welding alignment component includes: A screw jack (8), the screw jack (8) is provided at one axial end of the central shaft (1), and the screw jack (8) is fixedly connected to the central shaft (1) through a suspension support seat (35). The screw of the screw jack (8) stretches and drives the welding torch (4) to lift and displace to the weld of the distribution box; A fixed gear (38), the fixed gear (38) is fixedly provided on the central shaft (1), and a moving gear (37) is meshed on one side of the fixed gear (38), so that the moving gear (37) meshes and drives along the circumferential direction of the fixed gear (38), and drives the two groups of welding torches (4) to rotate around the central shaft (1) to the position where the welds of the distribution box are flush.

9. A power distribution box assembly and welding device according to claim 8, characterized in that: The other axial end of the central shaft (1) is provided with a welding table component for supporting the distribution box and driving the displacement of the distribution box, which is used to drive the distribution box to translate and double-weld relative to the welding torch (4). Among them: The welding table component includes a track frame (7), the track frame (7) is provided at the other axial end of the central shaft (1), a support slide (6) is provided on the track frame (7), and a tooling mold (5) is provided on the support slide (6), so that the support slide (6) pushes the tooling mold (5) to displace, and drives the distribution box in the tooling mold (5) to translate and weld along the welding torch (4).

10. A method for assembling and welding a distribution box, applicable to the distribution box assembling and welding device described in claim 9, characterized in that, It includes the following steps: Step 1: The distribution box is loaded into the tooling mold (5), and the central part of the distribution box is aligned with the central shaft (1); Step 2: The two groups of welding torches (4) move synchronously in the opposite direction, move towards the included angle weld of the distribution box, and at the initial stage of the movement, using the movement as the power, drive the two groups of welding torches (4) to open in the opposite direction to the welding angle required for the included angle weld; Step 3: The two groups of welding torches (4) lift and brake to realize double welding of the included angle weld of the distribution box, and after one group finishes welding the included angle weld, rotate to the position of the other group of included angle welds for double welding again; Step 4: The two groups of welding torches (4) move closer to the central shaft (1) to reset and zero, and then in the same way as in Step 2, drive the two groups of welding torches (4) to move towards the horizontal weld of the distribution box and open in the opposite direction to the welding angle required for the horizontal weld; Step 5: The two groups of welding torches (4) are lifted and braked to approach the horizontal weld seam. At this time, the tooling die (5) pushes the distribution box to move horizontally, realizing double welding of the horizontal weld seam of the distribution box.

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