Low-voltage integrated distribution box assembly welding device and welding method

Abstract

The present application relates to the technical field of low-voltage comprehensive distribution box production, and discloses a low-voltage comprehensive distribution box assembling and welding device, which comprises a U-shaped mounting seat and further comprises: a box body center clamping assembly arranged at the lower end of the U-shaped mounting seat and capable of adaptively clamping the four edges of the box body; a box bottom plate center clamping assembly arranged at the lower end center of the connecting column; and an electric push rod one arranged at the upper end of the U-shaped mounting seat and provided with a loading disc at the push rod end, wherein the low-voltage comprehensive distribution box assembling and welding device and the welding method can avoid the time-consuming and labor-intensive and low-efficiency manual splicing, ensure the flatness of the joint gap, ensure that the welding gun head can perform omnidirectional welding treatment on the splicing gap, and enable the welding gun head to perform automatic welding on the four splicing gaps without manual side changing, so that the welding work can be performed in a closed environment, and the welding bubble and virtual welding caused by the influence of strong airflow can be avoided.

Description

Technical Field

[0001] This invention relates to the field of low-voltage integrated distribution box manufacturing technology, specifically to low-voltage integrated distribution box assembly and welding equipment and welding methods. Background Technology

[0002] The low-voltage integrated distribution box is a new type of integrated control box that integrates power distribution, metering, protection, control, and reactive power compensation. After the low-voltage integrated distribution box is formed by processes such as stamping and bending, welding is an important step in the production process.

[0003] When assembling and welding the enclosure and bottom plate of the low-voltage integrated distribution box, the following methods are available: First, the operator holds the enclosure and bottom plate by hand to splice them together, and then holds the welding gun to rotate and weld the four sides of the joint; Second, the operator holds one of the enclosure and bottom plate by hand to mechanically clamp and position it, and then holds the other part to splice and weld it together.

[0004] The welding technology of the existing low-voltage integrated distribution boxes has the following technical defects:

[0005] Firstly, manual docking of the box shell and bottom plate can easily cause the splicing seam to shift, resulting in low efficiency. When using the clamping alignment method, the clamping part can easily block the splicing seam, making it impossible for the welding gun to weld. All of the above methods require manual switching of the sides for welding work.

[0006] Secondly, the welding process is easily affected by airflow, which can cause incomplete welds and bubbles, thus affecting the quality of the weld. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides low-voltage integrated distribution box assembly and welding equipment and welding method.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a low-voltage integrated distribution box assembly and welding equipment, including a U-shaped mounting base, and further comprising:

[0009] A box-centering clamping component is located at the lower end of the U-shaped mounting base, which adapts to the four sides of the box to center and clamp the box.

[0010] An electric push rod is located at the upper end of the U-shaped mounting base, with a loading plate at its push rod end and a connecting column at the lower end of the loading plate with the same center.

[0011] A box bottom plate centering clamping assembly is located at the lower center of the connecting column and is co-centered with the box body centering clamping assembly. It adaptively clamps the box bottom plate according to the four sides of the box bottom plate, realizing the assembly and splicing of the box body and the box bottom plate. The box bottom plate centering clamping assembly includes four upper clamping heads that are driven to rotate by a rotating component, so that the upper clamping heads can rotate to avoid obstructing the splicing gap between the box body and the box bottom plate.

[0012] The movable tube slides through to the center of the central clamping assembly of the bottom plate of the box. An elastic element is provided between the movable tube and the central clamping assembly of the bottom plate of the box. The elastic element allows the suction cup on the movable tube to adaptively and tightly adhere to the surface of the bottom plate of the box.

[0013] A suction and exhaust assembly is provided on the loading tray and connected to the suction cup;

[0014] The rotating cylinder rotates around the outside of the connecting column, and is driven to rotate by a drive assembly set on the loading plate.

[0015] Electric push rod 2 is mounted on the rotating cylinder and pushes the longitudinal vertical adjustment component to move laterally, so that the longitudinal vertical adjustment component drives the welding gun head to weld the four-sided splicing seam;

[0016] It also includes a shielding box, a track displacement assembly, and a switch assembly;

[0017] A track displacement component, mounted on the shielding box, moves the U-shaped mounting base and the entire device to the shielding box, and cooperates with the switch component to close the opening of the shielding box.

[0018] Furthermore, the centrally located clamping assembly includes a mounting base, four electric push rods, a connecting base, and a lower clamping head;

[0019] The mounting base is located at the lower end of the U-shaped mounting base, and the four electric push rods are all located at the upper end of the mounting base, with adjacent electric push rods arranged at a 90-degree angle.

[0020] A connecting seat is provided at the push rod end of the electric push rod three;

[0021] The lower clamping head is located on the connecting seat, and is L-shaped with its inner right angle facing upwards. The housing is located between the four lower clamping heads.

[0022] Furthermore, the upper end of the mounting base is provided with a support base, and the upper surface of the support base is flush with the inner bottom wall surface of the lower clamping head.

[0023] Furthermore, the box bottom plate central clamping assembly also includes a fixing plate, a loading seat, four electric push rods, and a hinge seat;

[0024] A fixed plate is located at the lower end of the connecting column, and a loading seat is located at the lower end of the fixed plate, concentrically.

[0025] Four electric push rods are located at the upper end of the loading seat, with adjacent electric push rods arranged at a 90-degree angle.

[0026] A hinge base is provided at the push rod end of the electric push rod four. The four upper clamping heads are respectively hinged to the hinge base. The upper clamping heads are L-shaped with their inner right angle faces downward. A rotating component is provided on the hinge base. The rotating component is a micro servo motor.

[0027] The bottom plate of the box is located between the upper clamping heads;

[0028] The moving tube passes through to the center between the fixed plate and the loading seat, and an elastic element is disposed on the outside of the moving tube between the moving tube and the fixed plate. The elastic element is a stainless steel spring.

[0029] The suction cup is located below the loading seat.

[0030] Furthermore, the exhaust assembly includes a vacuum pump, a hose, and an automatic exhaust valve;

[0031] A vacuum pump is located at the upper end of the loading tray;

[0032] A flexible tube connects the vacuum pump's intake port and the movable tube, passing through the connecting post.

[0033] Furthermore, the drive assembly includes a drive motor, a driven gear disk, and a driving gear disk;

[0034] A drive motor is located at the upper end of the loading tray;

[0035] The driven gear disc is located concentrically outside the rotating cylinder;

[0036] The driving gear disk is located at the output end of the drive motor and meshes with the driven gear disk for transmission.

[0037] Furthermore, the longitudinal vertical adjustment component includes a linear electric guide rail one and a linear electric guide rail two;

[0038] Linear electric guide rail one is longitudinally located at the push rod end of the electric push rod two;

[0039] Linear electric guide rail 2 is vertically mounted on the guide rail slide of linear electric guide rail 1, and welding gun head is mounted on the guide rail slide of linear electric guide rail 2.

[0040] The rotating cylinder is equipped with a mounting support for installing welding equipment.

[0041] Furthermore, the track displacement assembly includes a pair of tracks and a self-propelled trolley;

[0042] A pair of tracks are provided on the bottom wall of the shielding box and extend outward;

[0043] The self-propelled trolley rolls along the track and is connected to the U-shaped mounting base.

[0044] Furthermore, the switch assembly includes at least a pair of guide posts, a sliding seat, a switch door, a pair of reserved openings, and an electric push rod.

[0045] At least one pair of guide posts are provided on the outside of the shielding box, and the sliding seat slides on the outside of the guide posts;

[0046] The switch door is located between the guide pillars and fits against the opening surface of the shield box;

[0047] A pair of reserved openings are provided on the switch door, corresponding one-to-one with the track, for insertion into the outside of the track;

[0048] Electric push rod five is installed on the shield box to push the opening and closing door to move.

[0049] A welding method for assembling and welding equipment for low-voltage integrated distribution boxes, the welding method comprising the following steps:

[0050] Step 1: Manually operate the control panel to push the loading tray, connecting column, and bottom plate centering clamping assembly down to the bottom. Then, the operator holds the bottom plate with the spliced ​​side facing down and places it in the space formed by the four upper clamping heads, with each side corresponding to the other. The bottom plate centering clamping assembly drives the four upper clamping heads to move synchronously to center and clamp the bottom plate. After centering and clamping, the electric pusher is activated, moving the bottom plate up to the top.

[0051] Step 2: The operator holds the box and places it between the box-centering clamping components, clamping it on all four sides so that the clamped box is centered with the box bottom plate and the four sides are aligned.

[0052] Step 3: Reactivate the electric push rod to push the clamped bottom plate of the box to precisely align and seal with the bottom opening of the bottom plate. At this time, the elastic element causes the suction cup on the moving tube to tightly adhere to the surface of the bottom plate of the box.

[0053] Step 4: Activate the vacuuming and degassing assembly to vacuum the suction cup and the bottom plate of the box, so that the suction cup can adsorb and position the bottom plate of the box. Then, the rotating component drives the upper clamping head to rotate 90 degrees and separate it from the bottom plate of the box. In conjunction with the bottom plate centering clamping assembly, the upper clamping head is moved to the top of the bottom plate of the box, so that the splicing gap between the bottom plate of the box and the box body is unobstructed.

[0054] Step 5: After the above steps are completed, the U-shaped mounting base and the entire device are moved to the shielding box by the track displacement component, and the opening of the shielding box is closed in conjunction with the switch component.

[0055] Step Six: After sealing is completed, the rotating cylinder is driven to rotate around the connecting column by the drive component, which drives the electric push rod II, the longitudinal and vertical adjustment component and the welding gun head to rotate synchronously. After the welding gun head rotates to the four sides of the splice seam, it is adjusted laterally, longitudinally and vertically to make the welding gun head aligned with the four sides of the splice seam for automated welding.

[0056] Compared with the prior art, the present invention provides low-voltage integrated distribution box assembly and welding equipment and welding method, which have the following beneficial effects:

[0057] 1. The low-voltage integrated distribution box assembly and welding equipment and welding method use an electric push rod to push the loading plate, connecting column and box bottom plate centering clamping assembly to the bottom. The operator holds the box bottom plate with the spliced ​​surface facing down and places it in the space formed by the four upper clamping heads, with the four sides corresponding one by one. The box bottom plate centering clamping assembly drives the four upper clamping heads to move synchronously to center and clamp the box bottom plate. After centering and clamping, the electric push rod is activated to move the box bottom plate to the top.

[0058] In addition, by holding the box in your hand, place it between the box centering clamping components and clamp it on all four sides so that the clamped box is centered with the bottom plate and the four sides are aligned.

[0059] Reactivate the electric push rod to push the clamped bottom plate to precisely align and seal with the bottom opening of the bottom plate. At this time, the elastic element makes the suction cup on the moving tube tightly adhere to the surface of the bottom plate, thus avoiding the time-consuming, labor-intensive, and inefficient manual splicing, while ensuring the flatness of the joint.

[0060] The vacuum treatment is achieved by the suction cup and the bottom plate of the box through the set suction and exhaust components, so that the suction cup can be adsorbed and positioned on the bottom plate. Then, the upper clamping head is rotated 90 degrees and separated from the bottom plate by the rotating component. With the help of the bottom plate centering clamping component, the upper clamping head is moved to the top of the bottom plate, so that the splicing gap between the bottom plate and the box body is unobstructed, and the welding gun head can perform all-round welding treatment on the splicing gap.

[0061] 2. The low-voltage integrated distribution box assembly and welding equipment and welding method use a set track displacement component to move the U-shaped mounting base and the whole equipment to the shield box, and cooperate with the switch assembly to seal the opening of the shield box;

[0062] After sealing, the drive component drives the rotating cylinder to rotate around the connecting column, which in turn drives the electric push rod, the longitudinal and vertical adjustment components, and the welding gun head to rotate synchronously. After the welding gun head rotates to the four sides of the splice seam, it is adjusted laterally, longitudinally, and vertically to align the welding gun head with the four sides of the splice seam for automated welding. There is no need for manual side switching for welding, ensuring that welding work is carried out in a closed environment and avoiding the phenomenon of welding bubbles and incomplete welds caused by strong airflow. Attached Figure Description

[0063] Figure 1 This is a perspective view of the present invention;

[0064] Figure 2 This is a side view of the present invention;

[0065] Figure 3 This is a partial three-dimensional view of the structure of the present invention;

[0066] Figure 4 This is a structural diagram of the bottom plate centering clamping assembly, the exhaust assembly, the drive assembly, and the longitudinal vertical adjustment assembly of the present invention.

[0067] Figure 5 For the present invention Figure 4 A 3D diagram showing the deflection direction;

[0068] Figure 6 This is an enlarged view of point A in the present invention;

[0069] Figure 7 This is a structural diagram of the track displacement component and the switch component of the present invention;

[0070] Figure 8 For the present invention Figure 7 A 3D diagram showing the deflection direction.

[0071] In the diagram: 1. U-shaped mounting base; 2. Mounting base; 3. Electric push rod three; 4. Connecting seat; 5. Lower clamping head; 6. Support base; 7. Electric push rod one; 8. Loading plate; 9. Connecting column; 10. Fixed plate; 11. Loading base; 12. Electric push rod four; 13. Hinge seat; 14. Rotating component; 15. Upper clamping head; 16. Suction cup; 17. Elastic component; 18. Moving tube; 19. Vacuum pump; 20. Hose; 21. Automatic exhaust valve; 2. Rotating cylinder; 23. Driven gear disk; 24. Drive motor; 25. Driven gear disk; 26. Electric push rod II; 27. Linear electric guide rail I; 28. Linear electric guide rail II; 29. ​​Welding gun head; 30. Mounting support base; 31. Shielding box; 32. Track; 33. Self-propelled trolley; 34. Guide column; 35. Sliding seat; 36. Opening and closing door; 37. Reserved opening; 38. Electric push rod V; 39. Box body; 40. Box bottom plate. Detailed Implementation

[0072] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0073] Please see Figures 1 to 3 The low-voltage integrated distribution box assembly and welding equipment mainly includes a U-shaped mounting base 1. The U-shaped mounting base 1 is made of high-strength Q235 steel plate and is set with the U-shaped opening facing left, serving as the basic load-bearing frame of the entire equipment.

[0074] The lower end surface of the U-shaped mounting base 1 is detachably connected to the mounting base 2 by bolts. The mounting base 2 is a circular plate structure, which is horizontally set in the bottom opening of the U-shaped mounting base 1. The upper end surface of the mounting base 2 is welded with a support base 6, which is a circular support block. Its upper surface is flush with the inner bottom wall surface of the subsequent lower clamping head 5, and is used to support the bottom of the box 39 to ensure the levelness of the box 39 when it is placed.

[0075] The box-center clamping assembly is located at the lower end of the U-shaped mounting base 1. The box-center clamping assembly includes the mounting base 2, four electric push rods 3, a connecting base 4, and a lower clamping head 5.

[0076] Four electric actuators 3 are vertically mounted on the upper surface of the mounting base 2 in a rectangular array. The electric actuators 3 are set at a 90-degree angle to each other. The electric actuators 3 are miniature electric actuators with a stroke of 150mm and a thrust of 500N. Their cylinders are fixed to the mounting base 2 by flange bolts.

[0077] Each electric actuator 3 has a connecting seat 4 bolted to its actuator end. The connecting seat 4 is a square block structure used for transition connection. A lower clamping head 5 is fixed to the outside of the connecting seat 4 by bolts. The lower clamping head 5 is L-shaped with its inner right angle facing upward to form an upward supporting clamping surface. The four lower clamping heads 5 enclose a rectangular clamping space. The housing 39 is located between the four lower clamping heads 5.

[0078] During operation, the four electric push rods 3 extend and retract synchronously, driving the connecting seat 4 and the lower clamping head 5 to move towards the center or outward, thereby achieving adaptive centering clamping of the four sides of boxes 39 of different sizes.

[0079] The upper surface of the U-shaped mounting base 1 is fixed with an electric push rod 7 by bolts. The electric push rod 7 is a heavy-duty electric push rod with a stroke of 600mm and a thrust of 2000N. It is set vertically. The push rod end of the electric push rod 7 is connected to a loading plate 8 through a flange. The loading plate 8 is a circular disc structure made of aluminum alloy, which takes into account both strength and light weight.

[0080] The lower end of the loading plate 8 is integrally formed with a connecting column 9. The connecting column 9 is a cylindrical hollow tube, through which the subsequent moving tube 18 and hose 20 are inserted. The lower end surface of the connecting column 9 is fixed with a fixing plate 10 by bolts. The fixing plate 10 is a circular flange structure.

[0081] The lower end of the fixed plate 10 is connected to the loading seat 11 by bolts. The loading seat 11 is a circular plate structure and serves as the mounting base for the centrally clamping assembly of the box bottom plate.

[0082] Please see Figures 4 to 6 The box bottom plate center clamping assembly is located at the lower center of the connecting column 9 and is co-centered with the box body center clamping assembly. The box bottom plate center clamping assembly includes a fixed plate 10, a loading seat 11, four electric push rods 12, a hinge seat 13, a rotating part 14, and four upper clamping heads 15.

[0083] Four electric push rods 12 are vertically mounted on the upper end of the loading seat 11 in a rectangular array. The two adjacent electric push rods 12 are set at a 90-degree angle. The electric push rods 12 are miniature electric push rods with a stroke of 120mm and a thrust of 300N.

[0084] Each electric push rod 12 has a push rod end connected to a hinge seat 13 by bolts. The hinge seat 13 is a square block structure, and an upper clamping head 15 is hinged to its inner side. The upper clamping head 15 is L-shaped with its inner right angle facing down, forming a downward pressing and clamping surface. The four upper clamping heads 15 enclose a rectangular clamping space, and the bottom plate 40 is located between the upper clamping heads 15.

[0085] Each hinge seat 13 has a rotating component 14 fixedly mounted on its surface. The rotating component 14 is a miniature servo motor, and its output shaft is fixedly connected to the upper clamping head 15. The rotating component 14 can drive the upper clamping head 15 to rotate 90 degrees, so that it rotates from the clamping position (inner right angle face down) to the avoidance position (inner right angle face up), thereby avoiding obstruction of the splicing gap between the box body 39 and the box bottom plate 40.

[0086] A movable tube 18 slides through the center hole of the connecting column 9. The movable tube 18 is a stainless steel round tube that can slide up and down along the axis of the connecting column 9. The lower end of the movable tube 18 extends to the bottom of the loading seat 11, and its end is connected to a suction cup 16. The suction cup 16 is a round suction cup made of rubber with a diameter of 80mm.

[0087] An elastic element 17 is installed and fixed between the outside of the moving tube 18 and the fixed plate 10. The elastic element 17 is a stainless steel spring, which is fitted on the outside of the moving tube 18. The upper end abuts against the lower end face of the fixed plate 10, and the lower end is connected and fixed to the moving tube 18. The elastic element 17 always applies a downward elastic force to the moving tube 18, so that the suction cup 16 always tends to press downward against the surface of the box bottom plate 40 without the action of external force, so as to achieve self-adaptive tightness.

[0088] The vacuum pump assembly is mounted on the loading tray 8. The vacuum pump assembly includes a vacuum pump 19, a hose 20, and an automatic exhaust valve 21.

[0089] Vacuum pump 19 is bolted to the upper surface of loading plate 8. It is a rotary vane vacuum pump with an ultimate vacuum of -0.08MPa and a pumping speed of 4L / s.

[0090] The flexible hose 20 has one end connected to the suction port of the vacuum pump 19, and the other end passes through the center hole of the connecting post 9 and is connected to the upper opening of the moving tube 18.

[0091] Automatic exhaust valve 21 is connected to the side wall of moving tube 18 and is a normally closed solenoid valve. When it is necessary to release the suction of suction cup 16, automatic exhaust valve 21 is energized and opened, and external air enters the moving tube 18 and the inside of suction cup 16, breaking the vacuum state and achieving rapid detachment.

[0092] Working principle: After the vacuum pump 19 is started, the closed space between the suction cup 16 and the bottom plate 40 is evacuated through the hose 20 and the moving tube 18 to form a negative pressure, so that the suction cup 16 is tightly adsorbed on the surface of the bottom plate 40, thereby achieving auxiliary positioning and pressing of the bottom plate 40.

[0093] A rotating cylinder 22 is rotatably mounted on the outside of the connecting column 9. The rotating cylinder 22 is an aluminum alloy cylinder and is connected to the outer wall of the connecting column 9 through a bearing. It can rotate freely around the axis of the connecting column 9.

[0094] The drive assembly is mounted on the loading disk 8. The drive assembly includes a drive motor 24, a driven gear disk 23, and a driving gear disk 25.

[0095] The drive motor 24 is bolted to the outer surface of the loading disk 8. It is a servo motor with a power of 400W.

[0096] The drive gear disk 25 is fixed on the output shaft of the drive motor 24.

[0097] Driven gear disk 23 is fixed to the outer wall of rotating cylinder 22 with the same center and meshes with driving gear disk 25 for transmission. When driving motor 24 rotates, it drives rotating cylinder 22 to rotate 360° around connecting column 9 through gear meshing between driving gear disk 25 and driven gear disk 23.

[0098] An electric push rod 26 is bolted to the outer wall of the rotating cylinder 22. The electric push rod 26 is horizontally set and its push rod end is connected to a longitudinal vertical adjustment component.

[0099] The longitudinal and vertical adjustment components include linear electric guide rail 1 27 and linear electric guide rail 2 28.

[0100] Linear electric guide rail 27 is fixedly installed longitudinally (horizontally) on the push rod end of electric push rod 26, and can move back and forth in the horizontal direction.

[0101] Linear electric guide rail 28 is vertically fixed on the guide rail slide of linear electric guide rail 27 and can move back and forth in the vertical direction.

[0102] The welding gun head 29 is fixedly mounted on the guide slide of the linear electric guide rail 28 by bolts, and can be vertically fine-tuned along with the linear electric guide rail 28.

[0103] In summary, the welding gun head 29 has four degrees of freedom. It rotates with the rotating cylinder 22 to achieve circumferential direction, is positioned by the electric push rod 26 (lateral), moves with the linear electric guide rail 27 to achieve longitudinal adjustment, and moves with the linear electric guide rail 28 to achieve vertical adjustment, thereby accurately aligning with any position of the joint between the box body 39 and the box bottom plate 40 for welding.

[0104] The rotating cylinder 22 is also welded with a mounting support 30, which is used to install welding power supply, wire feeding mechanism and other welding auxiliary equipment to ensure that there is no entanglement during rotation adjustment.

[0105] Please see Figures 7 to 8 The equipment also includes a shielding box 31, which is a rectangular box structure made of welded steel plates. The interior is set as a welding working chamber. The shielding box 31 has an opening on the left side for the entire equipment to enter.

[0106] The track displacement component is mounted on the shielding box 31 and includes:

[0107] A pair of tracks 32 are bolted to the bottom wall of the shield box 31 and extend outward to the outside of the shield box 31.

[0108] The self-propelled trolley 33 is mounted on the track 32 and can roll along the track 32. The bottom of the U-shaped mounting base 1 is connected to the self-propelled trolley 33 by bolts.

[0109] The switch assembly is disposed at the opening of the shielding box 31, and includes:

[0110] A pair of guide posts 34 are vertically welded to the outer walls on both sides of the opening of the shield box 31.

[0111] A pair of sliding seats 35 are slidably fitted onto the outside of the guide post 34 and can slide up and down along the guide post 34.

[0112] The door 36 is fixed between the sliding seats 35 by bolts. Its shape matches the opening surface of the shield box 31, and it is closed when it fits the opening surface of the shield box 31.

[0113] A pair of reserved openings 37 are provided at the bottom of the switch door 36, and their positions correspond one-to-one with the track 32 below. When the switch door 36 is closed, the reserved openings 37 are inserted into the outside of the track 32 to ensure the sealing effect when the track 32 passes through the switch door 36.

[0114] The electric push rod 38 is bolted to the top of the shield box 31. Its push rod end is connected to the fixed switch door 36, which drives the switch door 36 to move up and down along the guide column 34 to realize the opening and closing of the shield box 31.

[0115] The welding method for assembling and welding equipment for low-voltage integrated distribution boxes includes the following steps:

[0116] Step 1: Manually operate the control panel to make the electric push rod 7 push the loading tray 8, connecting column 9 and box bottom plate 39 centering clamping assembly down to the bottom. Then, the operator holds the box bottom plate 40 with the spliced ​​side of the box bottom plate 40 facing down and places it in the space formed by the four upper clamping heads 15, with the four sides corresponding one by one. The box bottom plate centering clamping assembly drives the four upper clamping heads 15 to move synchronously to center and clamp the box bottom plate 40. After centering and clamping, the electric push rod 7 is started, which drives the box bottom plate 40 to move up to the top.

[0117] Step 2: The operator holds the box 39 and places it between the box centering clamping components, and clamps it on all four sides to make the clamped box 39 and the bottom plate 40 concentric and aligned on all four sides.

[0118] Step 3: Restart the electric push rod 7 to push the clamped bottom plate 39 to precisely align and seal with the bottom opening of the bottom plate 40. At this time, the suction cup 16 on the moving tube 18 is tightly attached to the surface of the bottom plate 40 by the elastic element 17.

[0119] Step 4: Activate the vacuuming and degassing assembly to vacuum the suction cup 16 and the bottom plate 40, so that the suction cup 16 can adsorb and position the bottom plate 40. Then, the rotating component 14 drives the upper clamping head 15 to rotate 90 degrees and separate it from the bottom plate 40. In conjunction with the bottom plate centering clamping assembly, the upper clamping head 15 is moved to the top of the bottom plate 40, so that the splicing gap between the bottom plate 40 and the box body 39 is unobstructed.

[0120] Step 5: After the above steps are completed, the U-shaped mounting base 1 and the entire equipment are moved to the shielding box 31 by the track displacement component, and the opening of the shielding box 31 is closed in conjunction with the switch component.

[0121] Step Six: After the sealing is completed, the rotating cylinder 22 is driven to rotate around the connecting column 9 by the drive component, which drives the electric push rod 26, the longitudinal and vertical adjustment component and the welding gun head 29 to rotate synchronously. After the welding gun head 29 rotates to the four sides of the splice seam, it is adjusted laterally, longitudinally and vertically to make the welding gun head 29 aligned with the four sides of the splice seam for automated welding.

[0122] Detailed installation and usage steps

[0123] Step 1: Loading and clamping the bottom plate 40 of the container.

[0124] The manual control panel (touch screen located on the side of the U-shaped mounting base 1) issues control commands, and the electric push rod 7 drives the loading plate 8, connecting column 9, fixed plate 10, loading base 11, electric push rod 12, hinge base 13, rotating part 14 and upper clamping head 15 to move down to the lowest position.

[0125] The operator holds the bottom plate 40 of the box, with the splicing surface of the bottom plate 40 (i.e. the surface that mates with the box body 39) facing down, and places the bottom plate 40 into the rectangular space enclosed by the four upper clamping heads 15, so that the four sides of the bottom plate 40 correspond one-to-one with the four upper clamping heads 15.

[0126] The control panel issues a command, and the four electric push rods 12 extend synchronously, driving the hinge seat 13 and the upper clamping head 15 to move towards the center, clamping the bottom plate 40 in a centered manner on all four sides, ensuring that the geometric center of the bottom plate 40 coincides with the center of the equipment.

[0127] After clamping is completed, the electric push rod 7 starts to retract, driving the bottom plate 40 of the box to move to the highest position (at this time, the bottom plate 40 is located at the top of the equipment, leaving assembly space between it and the clamping components of the box body 39).

[0128] Step two, loading and alignment of container 39.

[0129] The operator holds the box 39 (i.e. the enclosure of the distribution box), places the bottom opening of the box 39 upwards on the support base 6, so that the box 39 is positioned between the four lower clamping heads 5.

[0130] The control panel issues a command, and the four electric push rods 3 extend synchronously, driving the connecting seat 4 and the lower clamping head 5 to move towards the center, thus centering and clamping the four sides of the housing 39.

[0131] At this time, the geometric center of the box body 39 coincides with the geometric center of the box bottom plate 40 (set at the same center), and the four sides of the box body 39 are aligned with the four sides of the box bottom plate 40 (the four sides are aligned).

[0132] Step 3: Sealing the connection between the housing 39 and the bottom plate 40.

[0133] The control panel issues a command, and the electric push rod 7 starts to extend again, pushing the loading plate 8 and connecting column 9 down, so that the bottom opening of the clamped box 39 is precisely aligned with the top opening of the box bottom plate 40.

[0134] During the downward movement, the elastic element 17 (stainless steel spring) is compressed, causing the suction cup 16 on the moving tube 18 to move downward and fit tightly against the surface of the box bottom plate 40, thus achieving adaptive clamping.

[0135] Step four: Vacuum suction and clamping head avoidance.

[0136] The control panel issues a command, and the vacuum pump 19 starts, using the hose 20, connecting column 9, and moving tube 18 to evacuate the space between the suction cup 16 and the bottom plate 40.

[0137] When the vacuum level reaches the set value (-0.06MPa), the suction cup 16 firmly adsorbs the bottom plate 40 of the box, achieving auxiliary positioning and pressing, and ensuring the flatness of the docking gap.

[0138] Subsequently, the rotating component 14 (micro servo motor) is activated, driving the four upper clamping heads 15 to rotate 90 degrees, so that the upper clamping heads 15 rotate from the clamping position (inner right angle face down) to the clearance position (inner right angle face side up), separating from the bottom plate 40.

[0139] At the same time, the electric push rod 12 retracts, driving the upper clamping head 15 to move above the bottom plate 40, so that the four-sided splicing gap between the box body 39 and the bottom plate 40 is completely unobstructed.

[0140] Step 5: Move the entire equipment into the shielding box and seal it.

[0141] The control panel issues a command, and the self-propelled trolley 33 rolls along the track 32, driving the U-shaped mounting base 1 and the entire equipment to move towards the shielding box 31 until the whole thing enters the shielding box 31.

[0142] Subsequently, the electric push rod 38 is activated, pushing the switch door 36 to slide downward along the guide post 34, so that the switch door 36 fits against the opening surface of the shield box 31. At this time, the reserved opening 37 is inserted into the outside of the track 32 to ensure the sealing effect.

[0143] At this point, the welding chamber forms a sealed environment, effectively isolating the welding quality from external airflow.

[0144] Step six: Automated four-sided welding.

[0145] Once the sealing is complete, the control panel issues a welding start command:

[0146] (1) The drive motor 24 starts and drives the rotating cylinder 22 to rotate around the connecting column 9 through the meshing transmission of the active gear disk 25 and the driven gear disk 23.

[0147] (2) The welding gun head 29 rotates synchronously with the rotating cylinder 22. When it rotates to the first edge of the splicing seam (such as the front edge), the drive motor 24 stops.

[0148] (3) The electric push rod 26 is started, pushing the linear electric guide rail 27 to extend laterally, so that the welding gun head 29 is aligned with the front splicing gap.

[0149] (4) The linear electric guide rail 28 is started, driving the welding gun head 29 to make vertical fine adjustments and accurately align with the center line of the gap.

[0150] (5) When the welding power supply is started, the linear electric guide rail 27 drives the welding gun head 29 to move along the front splice gap for automatic welding.

[0151] (6) After welding is completed, drive motor 24 continues to rotate 90°, welding gun head 29 reaches the second edge (such as the right side) position, and repeat steps (3) to (5).

[0152] (7) Welding of the four sides is completed in sequence. The entire welding process is fully automated and requires no manual intervention.

[0153] After welding is completed, vacuum pump 19 is turned off, automatic exhaust valve 21 is opened, suction cup 16 releases box bottom plate 40, rotating part 14 rotates in the opposite direction, upper clamping head 15 is reset, electric push rod three 3 and electric push rod four 12 retract, box body 39 and box bottom plate 40 are released, self-propelled trolley 33 moves in the opposite direction, moves the equipment out of shielding box 31, and takes out the finished distribution box after welding.

[0154] Beneficial effects

[0155] Compared with the prior art, the present invention has the following beneficial effects:

[0156] 1. High docking accuracy and significantly improved efficiency.

[0157] By employing a dual four-sided adaptive centering clamping mechanism consisting of a central clamping component for the box body and a central clamping component for the bottom plate, and in conjunction with the lifting and docking of the electric push rod 7, the box body 39 and the bottom plate 40 are aligned and docked on all four sides in the same center. This replaces the traditional manual hand-held splicing method, improving docking efficiency and accuracy.

[0158] 2. Unobstructed welding path enables fully automated welding.

[0159] The upper clamping head 15 is rotated 90 degrees by the rotating component 14 to avoid the gap. With the help of the electric push rod 4 12, the upper clamping head 15 is moved above the bottom plate 40 of the box, so that the four-sided splicing gap is fully exposed. Combined with the horizontal pushing of the electric push rod 26, the circumferential rotation of the rotating cylinder 22 and the four-degree-of-freedom adjustment of the longitudinal and vertical adjustment components, the welding gun head 29 can be precisely aligned with any splicing gap, realizing fully automated welding on all four sides without the need for manual side changing.

[0160] 3. A closed welding environment to eliminate airflow interference.

[0161] The entire equipment is moved into the shielding box 31 by the track displacement component, and the opening is closed by the switch component to form a sealed welding cavity. During the welding process, external airflow cannot enter, which effectively avoids welding bubbles and incomplete welds caused by airflow, and improves the welding qualification rate.

[0162] 4. The suction cups feature adaptive adsorption, compatible with different box bottom plate thicknesses.

[0163] The elastic element 17 (stainless steel spring) ensures that the suction cup 16 on the moving tube 18 always has a downward elastic preload, which can adapt to the surface of the bottom plate 40 of different thicknesses. There is no need to change the clamps for different specifications of boxes, and the equipment has strong compatibility.

[0164] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Low-voltage integrated distribution box assembly and welding equipment, including a U-shaped mounting base, characterized in that: Also includes: A box-centering clamping component is located at the lower end of the U-shaped mounting base, which adapts to the four sides of the box to center and clamp the box. An electric push rod is located at the upper end of the U-shaped mounting base, with a loading plate at its push rod end and a connecting column at the lower end of the loading plate with the same center. A box bottom plate centering clamping assembly is located at the lower center of the connecting column and is co-centered with the box body centering clamping assembly. It adaptively clamps the box bottom plate according to the four sides of the box bottom plate, realizing the assembly and splicing of the box body and the box bottom plate. The box bottom plate centering clamping assembly includes four upper clamping heads that are driven to rotate by a rotating component, so as to realize the rotation of the upper clamping heads and avoid obstructing the splicing gap between the box body and the box bottom plate. The movable tube slides through to the center of the central clamping assembly of the bottom plate of the box. An elastic element is provided between the movable tube and the central clamping assembly of the bottom plate of the box. The elastic element allows the suction cup on the movable tube to adaptively and tightly adhere to the surface of the bottom plate of the box. A suction and exhaust assembly is provided on the loading tray and connected to the suction cup; The rotating cylinder rotates around the outside of the connecting column, and is driven to rotate by a drive assembly set on the loading plate. Electric push rod 2 is mounted on the rotating cylinder and pushes the longitudinal vertical adjustment component to move laterally, so that the longitudinal vertical adjustment component drives the welding gun head to weld the four-sided splicing seam; It also includes a shielding box, a track displacement assembly, and a switch assembly; A track displacement component, mounted on the shielding box, moves the U-shaped mounting base and the entire device to the shielding box, and works with the switch component to close the opening of the shielding box.

2. The low-voltage integrated distribution box assembly and welding equipment according to claim 1, characterized in that: The central clamping assembly for the housing includes a mounting base, four electric push rods, a connecting base, and a lower clamping head; The mounting base is located at the lower end of the U-shaped mounting base, and the four electric push rods are all located at the upper end of the mounting base, with adjacent electric push rods arranged at a 90-degree angle. A connecting seat is provided at the push rod end of the electric push rod three; The lower clamping head is located on the connecting seat, and is L-shaped with its inner right angle facing upwards. The housing is located between the four lower clamping heads.

3. The low-voltage integrated distribution box assembly and welding equipment according to claim 2, characterized in that: The upper end of the mounting base is provided with a support base, and the upper surface of the support base is flush with the inner bottom wall surface of the lower clamping head.

4. The low-voltage integrated distribution box assembly and welding equipment according to claim 1, characterized in that: The box bottom plate central clamping assembly also includes a fixed plate, a loading seat, four electric push rods and a hinge seat; A fixed plate is located at the lower end of the connecting column, and a loading seat is located at the lower end of the fixed plate, concentrically. Four electric push rods are located at the upper end of the loading seat, with adjacent electric push rods arranged at a 90-degree angle. A hinge base is provided at the push rod end of the electric push rod four. The four upper clamping heads are respectively hinged to the hinge base. The upper clamping heads are L-shaped with their inner right angle faces downward. A rotating component is provided on the hinge base. The rotating component is a micro servo motor. The bottom plate of the box is located between the upper clamping heads; The moving tube passes through to the center between the fixed plate and the loading seat, and an elastic element is disposed on the outside of the moving tube between the moving tube and the fixed plate. The elastic element is a stainless steel spring. The suction cup is located below the loading seat.

5. The low-voltage integrated distribution box assembly and welding equipment according to claim 1, characterized in that: The exhaust assembly includes a vacuum pump, a hose, and an automatic exhaust valve; A vacuum pump is located at the upper end of the loading tray; A flexible tube connects the vacuum pump's intake port and the movable tube, passing through the connecting post.

6. The low-voltage integrated distribution box assembly and welding equipment according to claim 1, characterized in that: The drive assembly includes a drive motor, a driven gear disk, and a driving gear disk; A drive motor is located at the upper end of the loading tray; The driven gear disc is located concentrically outside the rotating cylinder; The driving gear disk is located at the output end of the drive motor and meshes with the driven gear disk for transmission.

7. The low-voltage integrated distribution box assembly and welding equipment according to claim 1, characterized in that: The longitudinal vertical adjustment component includes a linear electric guide rail one and a linear electric guide rail two; Linear electric guide rail one is longitudinally located at the push rod end of the electric push rod two; Linear electric guide rail 2 is vertically mounted on the guide rail slide of linear electric guide rail 1, and welding gun head is mounted on the guide rail slide of linear electric guide rail 2. The rotating cylinder is equipped with a mounting support for installing welding equipment.

8. The low-voltage integrated distribution box assembly and welding equipment according to claim 1, characterized in that: The track displacement assembly includes a pair of tracks and a self-propelled trolley; A pair of tracks are provided on the bottom wall of the shielding box and extend outward; The self-propelled trolley rolls along the track and is connected to the U-shaped mounting base.

9. The low-voltage integrated distribution box assembly and welding equipment according to claim 8, characterized in that: The switch assembly includes at least one pair of guide posts, a sliding seat, a switch door, a pair of reserved openings, and an electric push rod. At least one pair of guide posts are provided on the outside of the shielding box, and the sliding seat slides on the outside of the guide posts; The switch door is located between the guide pillars and fits against the opening surface of the shield box; A pair of reserved openings are provided on the switch door, corresponding one-to-one with the track, for insertion into the outside of the track; Electric push rod five is installed on the shield box to push the opening and closing door to move.

10. The welding method for the low-voltage integrated distribution box assembly welding equipment according to any one of claims 1-9, characterized in that, The welding method includes the following steps: Step 1: Manually operate the control panel to push the loading tray, connecting column, and bottom plate centering clamping assembly down to the bottom. Then, the operator holds the bottom plate with the spliced ​​side facing down and places it in the space formed by the four upper clamping heads, with each side corresponding to the other. The bottom plate centering clamping assembly drives the four upper clamping heads to move synchronously to center and clamp the bottom plate. After centering and clamping, the electric pusher is activated, moving the bottom plate up to the top. Step 2: The operator holds the box and places it between the box-centering clamping components, clamping it on all four sides so that the clamped box is centered with the box bottom plate and the four sides are aligned. Step 3: Reactivate the electric push rod to push the clamped bottom plate of the box to precisely align and seal with the bottom opening of the bottom plate. At this time, the elastic element causes the suction cup on the moving tube to tightly adhere to the surface of the bottom plate of the box. Step 4: Activate the vacuuming and degassing assembly to vacuum the suction cup and the bottom plate of the box, so that the suction cup can adsorb and position the bottom plate of the box. Then, the rotating component drives the upper clamping head to rotate 90 degrees and separate it from the bottom plate of the box. In conjunction with the bottom plate centering clamping assembly, the upper clamping head is moved to the top of the bottom plate of the box, so that the splicing gap between the bottom plate of the box and the box body is unobstructed. Step 5: After the above steps are completed, the U-shaped mounting base and the entire device are moved to the shielding box by the track displacement component, and the opening of the shielding box is closed in conjunction with the switch component. Step Six: After sealing is completed, the rotating cylinder is driven to rotate around the connecting column by the drive component, which drives the electric push rod II, the longitudinal and vertical adjustment component and the welding gun head to rotate synchronously. After the welding gun head rotates to the four sides of the splice seam, it is adjusted laterally, longitudinally and vertically to make the welding gun head aligned with the four sides of the splice seam for automated welding.

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