A cable branch box body stable welding equipment

Abstract

The present application relates to the technical field of branch box welding, and particularly relates to a stable welding equipment for a cable branch box body, which comprises a base, welding robots and a material taking robot located on both sides of the top of the base, a rotating disc for replacing a welding surface is rotatably connected to the base, a flat fixing assembly for lifting and adsorptively fixing a Z-shaped back plate is arranged on the rotating disc, a giving-way positioning assembly for centrally positioning the Z-shaped back plate and vertically correcting the bent side wall of the Z-shaped back plate is arranged on the rotating disc, and an adjustable grabbing assembly for fixing and leveling the side plate is arranged on the material taking robot; the Z-shaped back plate of the cable branch box is first subjected to floating self-adaptive preliminary central clamping to ensure the uniformity of the welding seam position after the Z-shaped back plate is placed, then subjected to adsorptively and correctively avoiding and fixing treatment to avoid shielding some welding seam areas, and finally subjected to comprehensive adsorptively and fixedly connecting to avoid the problem of too large welding seam spacing in a local area, thereby improving the welding quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of branch box welding, in particular to a stable welding equipment for a cable branch box. BACKGROUND

[0002] The cable branch box mainly undertakes the function of cable tapping or switching in the power system, and is an important equipment in the cable process of distribution network. When facing the scene of small capacity and independent load distribution concentration, the cable branch box can realize the multi-branch connection of the cable and meet the flexible layout demand of the distribution network. In the production and manufacturing process of the cable branch box, the welding process is the key step to ensure the structural strength and sealing performance of the box body.

[0003] For example, a distribution box body welding device for power supply is disclosed in CN117697260A. The welding device is capable of quickly docking two side plates and a Z-shaped back plate through the cooperation of a rotating table, a back plate pushing mechanism and a side plate clamping mechanism, thereby realizing the welding of the box body.

[0004] However, the back plate pushing mechanism and the side plate clamping mechanism can only clamp and fix the side plate and rely on the movement of the Z-shaped back plate to realize the butt joint of the welding seam. However, it cannot correct the bending angle between the side walls of the Z-shaped back plate obtained by bending. For the Z-shaped back plate sheet metal part obtained by bending process, the vertical wall and the top horizontal wall of the vertically placed Z-shaped back plate are prone to tilt under the action of gravity (as shown in Figure 14 ), thereby affecting the precise control of the welding seam spacing, reducing the welding strength and shortening the service life of the box body.

[0005] To solve the above technical defects, a solution is proposed, which involves horizontally positioning the Z-shaped back plate, centrally placing it, using a side wall correction and adsorption type lifting and fixing process, and comprehensively adsorbing and grabbing the side plate to realize precise welding butt joint processing, independently optimize the welding seam spacing control, and avoid local shielding of the welding seam position to achieve high-efficiency and high-quality welding processing. SUMMARY

[0006] The present application aims to provide a stable welding equipment for a cable branch box to solve the above technical defects. The application uses a yielding positioning assembly combined with a flat fixing assembly to preliminarily centrally clamp the Z-shaped back plate of the cable branch box in a floating self-adaptive manner, ensuring the uniformity of the welding seam position after the Z-shaped back plate is placed, and then realizes the avoidance and fixation of the adsorption correction to avoid shielding of part of the welding seam area. In addition, the adjustment type grabbing assembly comprehensively adsorbs and fixes the side plate to achieve independent and precise butt joint, thereby avoiding the problem of excessive welding seam spacing in the local area, which leads to poor welding quality and affects the service life of the cable branch box.

[0007] The objective of this invention can be achieved through the following technical solution: a stable welding device for a cable branch box, comprising a base, and a welding robot and a material handling robot located on both sides of the top of the base. A turntable for changing the welding surface is rotatably connected to the base, and the turntable is provided with a flat fixing component for lifting and adsorbing a C-shaped back plate, and a clearance positioning component for centering the C-shaped back plate and cooperating with the flat fixing component to vertically correct its bent side wall. An arc welding gun is installed on the welding robot, and an adjustable material handling component is provided on the material handling robot for leveling and fixing the side plate.

[0008] Preferably, a first servo motor for driving the turntable to rotate is installed on the base, and an air chamber is opened inside the turntable. The flat fixing assembly includes a piston plate that is sealed and slidably connected inside the air chamber, and a lifting frame located on the top of the turntable. Multiple air pipes that are slidably connected to the turntable are fixed between the piston plate and the lifting frame.

[0009] Preferably, an electric push rod is installed between the lifting frame and the turntable, the interior of the lifting frame is connected to the air chamber below the piston plate through an air pipe, and multiple adsorption holes are opened through the top of the lifting frame. A sealing gasket is fixedly installed on the top of the lifting frame around the adsorption holes.

[0010] Preferably, the yielding positioning assembly includes two sets of horizontal clamping plates slidably mounted on the top of the turntable, and a vertical clamping plate located between adjacent horizontal clamping plates and slidably mounted on the top of the turntable. The bottom of the horizontal clamping plates and the vertical clamping plates are respectively fixedly connected to a first L-rod and a second L-rod.

[0011] Preferably, the turntable has an interconnected mounting cavity inside and above the air chamber, and the top of the mounting cavity has a clearance groove for the first L rod or the second L rod to pass through. The mounting cavity is rotatably connected to a rotating shaft, and a rotating plate one and a rotating plate two are rotatably connected to the rotating shaft. A support plate one and a support plate two are respectively hinged between the rotating plate one and the first L rod, and between the rotating plate two and the second L rod.

[0012] Preferably, a second servo motor for driving the rotating shaft is installed on the top of the turntable, and a driven working wheel is rotatably connected to a set of first L rods and second L rods. A driving working wheel is fixedly connected to the rotating shaft, and a connecting rope that is connected to the driven working wheel is fixedly connected to the driving working wheel. A return spring is fixedly connected between a set of horizontal clamping plates, vertical clamping plates and corresponding clearance grooves.

[0013] Preferably, a straightening plate is slidably connected to the opposite side of the vertical clamping plate, and the inside of the straightening plate is connected to the inside of the lifting frame through a flexible tube. A plurality of stepped holes are opened through one side of the straightening plate, and an accordion suction cup is installed in the stepped holes. A reset spring is installed between the straightening plate and the vertical clamping plate.

[0014] Preferably, the adjustable material gripping assembly includes a connecting column fixedly installed on the material handling robot, and a fixing plate is installed on the connecting column. A rotating seat is rotatably connected to each corner on one side of the fixing plate, and a slot is provided on the rotating seat. An adsorption tube for installing multiple vacuum suction cups is provided in the slot.

[0015] Preferably, the fixed plate has toothed grooves corresponding to the positions of each rotating seat, the rotating seat has a movable plate that abuts against one side of the adsorption tube, the movable plate has a toothed block that engages with the toothed groove, and the rotating seat has a fixed bolt that abuts against the adsorption tube.

[0016] The beneficial effects of this invention are as follows:

[0017] (1) The present invention first uses two sets of horizontal clamping plates and vertical clamping plates to achieve floating adaptive centering clamping of the C-shaped back plate of the cable branch box located on the lifting frame, so as to ensure the uniformity of the weld position of multiple branch boxes of the same model, without the need for additional auxiliary adjustment, to achieve centering positioning clamping of different models of C-shaped back plates, thereby achieving convenient and high-precision welding processing; then, through the upward movement of the lifting frame, combined with the piston plate and the air chamber, the C-shaped back plate can be lifted and adsorbed and fixed, causing the bottom weld position to move to the top of the horizontal clamping plate. Then, combined with the gripping robot gripping the side plate and the rotation of the turntable, a fully unobstructed yielding welding processing is achieved to avoid the problem of reducing welding efficiency by multiple positioning clamping.

[0018] (2) The present invention first uses a lifting frame to fully support and fix the bottom of the C-shaped back plate, and then uses a vertical plate clamp to carry the straightening plate to hold the C-shaped back plate. The piston plate and the air chamber cooperate with the accordion suction cup on the straightening plate to realize the autonomous flat laying or vertical straightening treatment of each side wall of the C-shaped back plate. In addition, multiple sets of adsorption tubes are combined with vacuum suction cups to fully adsorb the side plates, thereby realizing the fully straightened docking and fixing treatment. This can effectively avoid the problem that the weld spacing in some areas is too large after the C-shaped back plate and the side plate are docked, resulting in poor welding quality and affecting the service life of the cable branch box in the later stage. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings;

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the present invention for fixing and welding the C-shaped back plate and the side plate;

[0022] Figure 3 This is a schematic diagram of the cooperation between the flat fixing component and the yielding positioning component of the present invention;

[0023] Figure 4 This is a schematic diagram of the installation of the flat fixing component of the present invention;

[0024] Figure 5 This is a schematic diagram of the flat fixing component of the present invention;

[0025] Figure 6 This is a schematic diagram of the installation of the yielding positioning component of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the yielding positioning component of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the yielding positioning component of the present invention from another perspective;

[0028] Figure 9 This is a schematic diagram showing the disassembly of the vertical clamp and the straightening plate of the present invention;

[0029] Figure 10 This is a partial cross-sectional schematic diagram of the correction plate of the present invention;

[0030] Figure 11 This is a schematic diagram of the adjustable material gripping assembly of the present invention;

[0031] Figure 12 This is a schematic diagram of the installation of the rotating base of the present invention;

[0032] Figure 13 This is a schematic diagram of the structure of the movable plate of the present invention;

[0033] Figure 14 This is a diagram showing the sidewall bending state of the C-shaped backplate under the influence of gravity when it is placed vertically in the prior art.

[0034] Legend:

[0035] 1. Base; 11. Welding robot; 12. Material handling robot; 13. Turntable; 14. Arc welding torch;

[0036] 2. Flat fixing assembly; 21. Piston plate; 22. Lifting frame; 23. Air tube; 24. Electric push rod; 25. Suction hole;

[0037] 3. Yielding positioning assembly; 31. Horizontal clamping plate; 32. Vertical clamping plate; 33. First L-rod; 34. Second L-rod; 35. Rotating shaft; 36. Rotating plate one; 37. Rotating plate two; 38. Support plate one; 39. Support plate two; 310. Driven working wheel; 311. Driving working wheel; 312. Connecting rope; 313. Return spring; 314. Correcting plate; 315. Flexible hose; 316. Bellows suction cup; 317. Return tension spring;

[0038] 4. Adjustable material gripping assembly; 41. Fixed plate; 42. Rotating seat; 43. Adsorption tube; 44. Toothed groove; 45. Movable plate; 46. Toothed block. Detailed Implementation

[0039] 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.

[0040] Example 1: Please refer to Figures 1-13 As shown, the problem in the existing technology where the weld spacing in some areas is too large after the C-shaped back plate and side plate are joined, resulting in poor welding quality and affecting the service life of the cable branch box, can be solved by the following solution:

[0041] This embodiment of a cable branch box stable welding equipment includes a base 1, and a welding robot 11 and a material handling robot 12 located on both sides of the top of the base 1. A turntable 13 for changing the welding surface is rotatably connected to the base 1, and a flat fixing component 2 for lifting and adsorbing the C-shaped back plate is provided on the turntable 13, and a clearance positioning component 3 for centering the C-shaped back plate and cooperating with the flat fixing component 2 to vertically correct its bent side wall. An arc welding gun 14 is installed on the welding robot 11, and an adjustable material handling component 4 for leveling and fixing the side plate is provided on the material handling robot 12.

[0042] A first servo motor is installed on the base 1 to drive the turntable 13 to rotate. The first servo motor drives the turntable 13 to rotate, and completes the docking and welding of the two sides of the C-shaped back plate with the corresponding side plates. The turntable 13 has an air cavity inside. The flat fixing component 2 includes a piston plate 21 that is sealed and slidably connected inside the air cavity.

[0043] The lifting frame 22 located on top of the turntable 13 is used to place the C-shaped back plate horizontally and provide full support, ensuring the flatness of the bottom of the C-shaped back plate and further ensuring the alignment of the bottom weld spacing. Multiple air pipes 23 that are slidably connected to the turntable 13 are fixed between the piston plate 21 and the lifting frame 22.

[0044] An electric push rod 24 is installed between the lifting frame 22 and the turntable 13. The air chamber inside the lifting frame 22 is connected to the air chamber below the piston plate 21 through the air pipe 23. Multiple adsorption holes 25 are opened through the top of the lifting frame 22. The U-shaped back plate is placed on the lifting frame 22 in a U-shape (horizontal). By evacuating the inside of the lifting frame 22, the adsorption holes 25 adsorb and fix the U-shaped back plate.

[0045] A sealing gasket is fixedly installed on the top of the lifting frame 22 around the adsorption hole 25. The sealing gasket is used to increase the sealing between the adsorption hole 25 and the C-shaped back plate, thereby enhancing the adsorption and fixation effect on the C-shaped back plate.

[0046] The yielding positioning component 3 includes two sets of horizontal clamping plates 31 that are slidably mounted on the top of the turntable 13, and a vertical clamping plate 32 located between adjacent horizontal clamping plates 31 and slidably mounted on the top of the turntable 13. The horizontal clamping plates 31 locally clamp the two side plates of the C-shaped back plate, and the vertical clamping plates 32 clamp the two bent side walls of the C-shaped back plate.

[0047] The two sets of horizontal clamping plates 31 and the two sets of vertical clamping plates 32 move relative to each other, thereby centering the C-shaped back plate on the lifting frame 22 to ensure the uniformity of the placement of multiple branch boxes of the same model, and thus achieve the uniformity of the weld position. Combined with the welding robot 11 and the arc welding gun 14, the welding process is completed quickly. The bottom of the horizontal clamping plates 31 and the vertical clamping plates 32 are respectively fixedly connected to the first L rod 33 and the second L rod 34.

[0048] The turntable 13 has an interconnected mounting cavity inside and above the air cavity. The top of the mounting cavity has a clearance groove for the first L rod 33 or the second L rod 34 to pass through, so as to avoid interference with the movement of the horizontal clamping plate 31 and the vertical clamping plate 32. The mounting cavity is rotatably connected to the rotating shaft 35.

[0049] Furthermore, rotating plate 36 and rotating plate 37 are rotatably connected to the rotating shaft 35. Support plate 38 and support plate 39 are respectively hinged between rotating plate 36 and the first L rod 33, and between rotating plate 37 and the second L rod 34. When the horizontal clamping plate 31 and the vertical clamping plate 32 on one side move relative to each other, the horizontal clamping plate 31 and the vertical clamping plate 32 on the other side move synchronously relative to each other through the joint cooperation of support plate 38, support plate 39, rotating plate 36 and rotating plate 37.

[0050] A straightening plate 314 is slidably connected to the opposite side of the vertical clamping plate 32, and the inside of the straightening plate 314 is connected to the inside of the lifting frame 22 through a flexible hose 315. Several step holes are opened through one side of the straightening plate 314, and an accordion suction cup 316 is installed in the step holes.

[0051] When the two sets of vertical clamping plates 32 clamp the two bent side walls of the C-shaped back plate, the multiple accordion suction cups 316 on the straightening plate 314 contact the bent side walls of the C-shaped back plate, and the straightening plate 314 abuts against the two sides of the bottom horizontal section of the C-shaped back plate. By vacuuming the inside of the straightening plate 314, the accordion suction cups 316 are attracted and fixed to the two bent side walls of the C-shaped back plate.

[0052] Before adsorption, the free end of the accordion suction cup 316 is initially located outside the corresponding step hole, so that when the two sides of the folded sidewall of the folded back plate are in a positive or inverted "eight" shape, each accordion suction cup 316 can contact the folded back plate for effective adsorption and fixation.

[0053] During the adsorption process, the length of the accordion suction cup 316 is shortened, causing the bent sidewalls on both sides of the shaped back plate to fit into the straightening plate 314, thereby achieving the straightening treatment of the sidewalls and avoiding the tilting that would cause the weld gap to be too large after the side plates are joined, thus affecting the welding quality. A reset spring 317 is installed between the straightening plate 314 and the vertical clamping plate 32.

[0054] The adjustable material gripping assembly 4 includes a connecting column fixedly installed on the material handling robot 12, and a fixing plate 41 is installed on the connecting column. The connecting column is used to smoothly place the fixing plate 41 inside the C-shaped back plate, assisting in the docking of the two side plates. Each corner of one side of the fixing plate 41 is rotatably connected to a rotating seat 42, and the rotating seat 42 is provided with a slot. The slot is provided with an adsorption tube 43 for installing multiple vacuum suction cups.

[0055] An external negative pressure vacuum pump is connected to multiple adsorption tubes 43 through pipes. The material handling robot 12 moves the fixed plate 41, causing the vacuum suction cups on the multiple adsorption tubes 43 to contact the side plate of the branch box. The multiple adsorption tubes 43 then perform a leveling adsorption gripping of the side plate. The material handling robot 12 then assembles the side plate onto one side of the C-shaped back plate for welding. The first servo motor drives the turntable 13 to rotate, completing the docking of the other side of the C-shaped back plate with the corresponding side plate.

[0056] The fixed plate 41 is provided with toothed grooves 44 corresponding to the positions of each rotating seat 42. The rotating seat 42 is slidably connected to a movable plate 45 that abuts against one side of the adsorption tube 43. The movable plate 45 is fixedly connected to a toothed block 46 that engages with the toothed groove 44. The rotating seat 42 is threadedly connected to a fixing bolt that abuts against the adsorption tube 43. The rotation connection of the rotating seat 42 and the disassembly connection of the adsorption tube 43 realize the adjustment of the spacing between the opposite ends of multiple adsorption tubes 43, thereby enabling the effective flat adsorption and fixation of side plates of different sizes.

[0057] Rotating the fixing bolt releases the fixation of the adsorption tube 43, so that the adsorption tube 43 no longer forcibly contacts the movable plate 45. Adjusting the distance between the end of the adsorption tube 43 and the fixing plate 41, and rotating the rotating seat 42 adjusts the fixed area formed by multiple adsorption tubes 43. Then, rotating the fixing bolt again contacts the adsorption tube 43, and the adsorption tube 43 simultaneously contacts the movable plate 45, causing the toothed block 46 on the movable plate 45 to engage with the toothed groove 44, thereby limiting the movement of the adsorption tube 43 and the rotation of the rotating seat 42, so as to realize the adsorption and gripping of different sizes of C-shaped back plates or side plates.

[0058] Example 2: Please refer toFigure 4 , Figure 5 and Figures 7-10 As shown, the following solutions address the issues of easily obscuring parts of the weld seam, requiring multiple positioning and clamping operations to reduce welding efficiency, and the need for additional adjustments when centering different models of the C-shaped backplate:

[0059] In this embodiment, a first servo motor that drives the turntable 13 to rotate is installed on the base 1, and an air cavity is opened inside the turntable 13. The flat fixing component 2 includes a piston plate 21 that is sealed and slidably connected inside the air cavity, and a lifting frame 22 located on the top of the turntable 13. A plurality of air pipes 23 that are slidably connected to the turntable 13 are fixed between the piston plate 21 and the lifting frame 22.

[0060] The lifting frame 22 is raised to lift the C-shaped back plate, causing the bottom weld position to move above the transverse clamping plate 31, so as to achieve a fully unobstructed clearance welding process, avoiding the problem of reduced welding efficiency due to multiple positioning and clamping. When the lifting frame 22 rises, the piston plate 21 is driven to rise synchronously in the air chamber through the air pipe 23.

[0061] An electric push rod 24 is installed between the lifting frame 22 and the turntable 13. The air chamber inside the lifting frame 22 is connected to the air chamber below the piston plate 21 through the air pipe 23. Multiple adsorption holes 25 are opened through the top of the lifting frame 22. A sealing gasket is fixedly installed on the top of the lifting frame 22 around the adsorption holes 25.

[0062] The lifting frame 22 drives the piston plate 21 to move synchronously upward in the air chamber through the air pipe 23. The volume of the air chamber below the piston plate 21 increases, forming a negative pressure environment. In conjunction with the air pipe 23, the air inside the lifting frame 22 is extracted. Through the adsorption hole 25, the sealing gasket and the lifting frame 22 perform a horizontal and flat adsorption fixation on the bottom of the C-shaped back plate.

[0063] A second servo motor is installed on the top of the turntable 13 to drive the rotating shaft 35 to rotate. A driven working wheel 310 is rotatably connected to a set of first L rods 33 and second L rods 34. A driving working wheel 311 is fixed to the rotating shaft 35, and a connecting rope 312 that is connected to the driven working wheel 310 is fixed to the driving working wheel 311. The second servo motor drives the rotating shaft 35 to carry the driving working wheel 311 to rotate. The driving working wheel 311 winds up the connecting rope 312. The connecting rope 312 is sleeved on the two sets of driven working wheels 310, which drives the corresponding side horizontal clamping plate 31 and vertical clamping plate 32 to move relative to each other.

[0064] A set of horizontal clamping plates 31 and vertical clamping plates 32 and corresponding clearance grooves are fixedly connected with a return spring 313. The return spring 313 is used to cause the corresponding horizontal clamping plates 31 and vertical clamping plates 32 to return to their original positions and move away from each other when the second servo motor drives the rotating shaft 35 to rotate in the opposite direction. At the same time, it ensures that the connecting rope 312 between the driving working wheel 311 and the driven working wheel 310 is taut and prevents the connecting rope 312 from separating from the driven working wheel 310.

[0065] When one of the horizontal clamping plates 31 (or vertical clamping plates 32) first contacts the C-shaped back plate, it pushes the C-shaped back plate to move synchronously, and cooperates with the other horizontal clamping plate 31 (or vertical clamping plate 32) to complete the centering of the C-shaped back plate between the horizontal clamping plates 31 (or vertical clamping plates 32). Then, the C-shaped back plate limits the horizontal clamping plate 31 (or vertical clamping plate 32), and the active working wheel 311 continuously winds up the connecting rope 312.

[0066] The driven wheel 310 on the first L-bar 33 rotates automatically, which then pulls only the vertical clamping plate 32 (or the horizontal clamping plate 31) to move. This achieves four-sided clamping and centering of the placed C-shaped back plate, and enables floating adaptive centering clamping of the C-shaped back plate of the cable branch box located on the lifting frame 22. No additional auxiliary adjustment is required, and centering and clamping of different models of C-shaped back plates can be achieved, thereby achieving convenient and high-precision welding.

[0067] A straightening plate 314 is slidably connected to the opposite side of the vertical clamping plate 32, and the inside of the straightening plate 314 is connected to the inside of the lifting frame 22 through a hose 315. Several stepped holes are opened through one side of the straightening plate 314, and an accordion suction cup 316 is installed in the stepped holes. A reset spring 317 is installed between the straightening plate 314 and the vertical clamping plate 32.

[0068] By clamping the bent sidewalls on both sides of the C-shaped back plate with the straightening plate 314 and combining it with the reset spring 317, the sidewalls on both sides have greater upward resistance when the lifting frame 22 lifts the C-shaped back plate. This allows the lifting frame 22 to correct the springback bending at the bend when the sheet metal part is bent into a C-shaped back plate, and optimizes the further horizontal correction of the bottom transverse section of the C-shaped back plate.

[0069] Example 3: Please refer to Figures 1-13 As shown, the present invention also proposes a method for using a stable welding device for cable branch boxes, comprising the following steps:

[0070] Step 1: The material handling robot 12 moves the fixed plate 41, causing the vacuum suction cups on multiple adsorption tubes 43 to contact the C-shaped back plate of the branch box. The external negative pressure vacuum pump is connected to multiple adsorption tubes 43 through pipes, thereby adsorbing and grabbing the C-shaped back plate and placing it in a U-shape on the lifting frame 22, with the two bent side walls of the C-shaped back plate located between the vertical clamps 32.

[0071] Step 2: The second servo motor drives the rotating shaft 35 to rotate the active I-shaped wheel 311. The active I-shaped wheel 311 winds up the connecting rope 312. The connecting rope 312 is sleeved on the two sets of driven I-shaped wheels 310, which drives the corresponding horizontal clamping plate 31 and vertical clamping plate 32 to move relative to each other. The other horizontal clamping plate 31 and vertical clamping plate 32 move synchronously relative to each other through the cooperation of support plate 1 38, support plate 2 39, rotating plate 1 36 and rotating plate 2 37.

[0072] One of the horizontal clamping plates 31 first contacts the shaped back plate, pushing the shaped back plate to move synchronously, and in conjunction with the other horizontal clamping plate 31, completes the centering of the shaped back plate between the horizontal clamping plates 31. Then, through the limiting of the horizontal clamping plate 31 by the shaped back plate, and the continuous winding of the connecting rope 312 by the active working wheel 311, the driven working wheel 310 on the first L rod 33 is caused to rotate, automatically changing to only pulling the vertical clamping plate 32 to move, thereby performing four-sided clamping and centering positioning of the placed shaped back plate. Similarly, after one of the vertical clamping plates 32 contacts the shaped back plate first, it automatically changes to only pulling the horizontal clamping plate 31 to move, and causes the multiple accordion suction cups 316 on the straightening plate 314 to abut against the corresponding bent side wall of the shaped back plate.

[0073] Step 3: The electric push rod 24 pushes the lifting frame 22 to carry the C-shaped back plate upward. The lifting frame 22 drives the piston plate 21 to move upward synchronously in the air chamber through the air pipe 23. The volume of the air chamber below the piston plate 21 increases, forming a negative pressure environment. With the help of the hose 315, the air inside the lifting frame 22 and the straightening plate 314 is extracted. Then, through the suction hole 25, the bottom of the C-shaped back plate is horizontally and flatly suctioned and fixed with the sealing gasket and the lifting frame 22. The lifting frame 22 lifts the C-shaped back plate to the top of the horizontal clamp 31. The accordion suction cup 316 adsorbs the bent side wall of the C-shaped back plate and attaches it to the straightening plate 314 to perform vertical flat straightening treatment on the bent side wall of the C-shaped back plate.

[0074] Step 4: The material handling robot 12 moves the fixed plate 41, causing the vacuum suction cups on the multiple suction tubes 43 to contact the side plate of the branch box. The multiple suction tubes 43 then perform a leveling suction grip on the side plate. The material handling robot 12 then assembles the side plate onto one side of the C-shaped back plate. Through multi-stage leveling, the weld seam between the C-shaped back plate and the side plate is aligned, and the horizontal clamping plate 31 is prevented from obstructing the bottom weld seam. The welding robot 11 operates the arc welding gun 14 to weld the seam. Then, the first servo motor drives the turntable 13 to rotate, completing the welding process between the other side of the C-shaped back plate and the side plate.

[0075] Step 5: When gripping different sized C-shaped back plates or side plates, rotate the fixing bolt to release the fixation of the adsorption tube 43. At the same time, the adsorption tube 43 no longer forcibly contacts the movable plate 45. Adjust the distance between the end of the adsorption tube 43 and the fixing plate 41, and rotate the rotating seat 42 to adjust the fixed area formed by multiple adsorption tubes 43. Then rotate the fixing bolt again to contact the adsorption tube 43. The adsorption tube 43 simultaneously contacts the movable plate 45, causing the toothed block 46 on the movable plate 45 to engage with the toothed groove 44, thereby limiting the movement of the adsorption tube 43 and the rotation of the rotating seat 42.

[0076] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stable welding device for a cable branch box, comprising a base (1), and a welding robot (11) and a material handling robot (12) located on both sides of the top of the base (1), characterized in that, The base (1) is rotatably connected to a turntable (13) for changing the welding surface, and the turntable (13) is provided with a flat fixing component (2) for lifting and adsorbing the C-shaped back plate, and a clearance positioning component (3) for centering the C-shaped back plate and cooperating with the flat fixing component (2) to vertically correct its bent side wall. The welding robot (11) is equipped with an arc welding gun (14), and the material picking robot (12) is provided with an adjustable material grabbing component (4) for leveling and fixing the side plate. The base (1) is equipped with a first servo motor that drives the turntable (13) to rotate, and the turntable (13) has an air chamber inside. The flat fixing component (2) includes a piston plate (21) that is sealed and slidably connected inside the air chamber, and a lifting frame (22) located on the top of the turntable (13). A plurality of air pipes (23) that are slidably connected to the turntable (13) are fixed between the piston plate (21) and the lifting frame (22). The yielding positioning component (3) includes two sets of horizontal clamping plates (31) that are slidably mounted on the top of the turntable (13), and a vertical clamping plate (32) that is located between adjacent horizontal clamping plates (31) and slidably mounted on the top of the turntable (13). The bottom of the horizontal clamping plate (31) and the vertical clamping plate (32) are respectively fixedly connected to a first L rod (33) and a second L rod (34). The turntable (13) has an interconnected mounting cavity inside and above the air cavity. The top of the mounting cavity has a clearance groove through which the first L rod (33) or the second L rod (34) passes. The mounting cavity is rotatably connected to a rotating shaft (35), and a rotating plate one (36) and a rotating plate two (37) are rotatably connected to the rotating shaft (35). A support plate one (38) and a support plate two (39) are respectively hinged between the rotating plate one (36) and the first L rod (33) and between the rotating plate two (37) and the second L rod (34). The top of the turntable (13) is equipped with a second servo motor that drives the rotating shaft (35) to rotate. A driven working wheel (310) is rotatably connected to a set of first L rods (33) and second L rods (34). A driving working wheel (311) is fixedly connected to the rotating shaft (35), and a connecting rope (312) that is connected to the driven working wheel (310) is fixedly connected to the driving working wheel (311). A return spring (313) is fixedly connected between a set of horizontal clamping plates (31), vertical clamping plates (32), and corresponding clearance grooves. A straightening plate (314) is slidably connected to the opposite side of the vertical clamp (32), and the inside of the straightening plate (314) is connected to the inside of the lifting frame (22) through a hose (315). A number of stepped holes are opened through one side of the straightening plate (314), and an accordion suction cup (316) is installed in the stepped holes. A reset spring (317) is installed between the straightening plate (314) and the vertical clamp (32).

2. The cable branch box enclosure stabilization welding equipment according to claim 1, characterized in that, An electric push rod (24) is installed between the lifting frame (22) and the turntable (13). The interior of the lifting frame (22) is connected to the air chamber below the piston plate (21) through an air pipe (23). Multiple adsorption holes (25) are opened through the top of the lifting frame (22). A sealing gasket is fixedly installed on the top of the lifting frame (22) around the adsorption holes (25).

3. The cable branch box stable welding equipment according to claim 1, characterized in that, The adjustable material gripping assembly (4) includes a connecting column fixedly installed on the material handling robot (12), and a fixing plate (41) is installed on the connecting column. A rotating seat (42) is rotatably connected to each corner of one side of the fixing plate (41), and a slot is provided on the rotating seat (42). An adsorption tube (43) for installing multiple vacuum suction cups is provided in the slot.

4. The cable branch box enclosure stabilization welding equipment according to claim 3, characterized in that, The fixed plate (41) is provided with toothed grooves (44) corresponding to the positions of each rotating seat (42). The rotating seat (42) is slidably connected to a movable plate (45) that abuts against one side of the adsorption tube (43). The movable plate (45) is fixedly connected to a toothed block (46) that engages with the toothed groove (44). The rotating seat (42) is threadedly connected to a fixing bolt that abuts against the adsorption tube (43).

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