A welding device with an automatic positioning function for a distribution box

Abstract

The invention discloses a welding device with an automatic positioning function for a distribution box. The welding device includes a chassis, a control box, a slewing mechanism, a clamping mechanism, a loading mechanism and a multi-axis welding machine. The slewing mechanism includes a servo motor, a turntable and an annular track. A slide rail is arranged on the turntable. The loading mechanism includes an assembly rack and a photosensitive sensor. The control box, the servo motor, the annular track and the assembly rack are all fixedly connected to the chassis. The turntable is slidably connected to the annular track. The clamping mechanism includes a long plate mechanism and a short plate mechanism. The long plate mechanism and the short plate mechanism are both slidably connected to the slide rail. The servo motor, the clamping mechanism and the photosensitive sensor are all electrically connected to the control box through electrical signals. The invention relates to the technical field of welding devices. The invention can automatically load and detect the length, width and inclination attitude of a steel plate, correct the inclination during clamping to ensure that two plates are perpendicular to each other, and adapt to distribution box steel plates with different lengths and widths to complete precise positioning welding.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and in particular to a welding equipment with an automatic positioning function for distribution boxes. Background Art

[0002] The welding process of distribution boxes is crucial for ensuring the strength and reliability of the distribution box structure. In the current technical system, the welding of distribution boxes mainly adopts manual welding methods, which rely on the actual skill level of operators. However, manual welding has significant construction risks and it is difficult to achieve the standardization of welding. In addition, even for welded products of the same batch, there may be quality differences because it is difficult for manual welding to accurately position the edge welds of distribution boxes, which may lead to weld deviations and thus require rework. These factors all limit the improvement of production efficiency.

[0003] Currently, some automated welding equipment is mainly used for the auxiliary welding operations of formed distribution boxes. For example, in the final assembly stage of distribution boxes, the welding top cover is added through automated equipment. However, even with the adoption of automated technology, the improvement of welding efficiency is not significant. The reason is that the welding efficiency cannot be improved from the initial assembly stage. The initial welding of steel plates is still slow and mostly relies on manual assembly. Even if some automated welding equipment is used for welding the initial two steel plates, these equipment rely on fixed fixtures for steel plate positioning, which limits their adaptability to welding operations of distribution boxes of different specifications. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding equipment with an automatic positioning function for distribution boxes to solve the problems in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A welding equipment with an automatic positioning function for distribution boxes includes a chassis, a control box, a slewing mechanism, a clamping mechanism, a feeding mechanism, and a multi-axis welding machine. The slewing mechanism includes a servo motor, a slewing table, and an annular rail. A slide rail is provided on the slewing table. The feeding mechanism includes an assembly rack and a photosensor. The control box, the servo motor, the annular rail, and the assembly rack are all fixedly connected to the chassis. The slewing table is slidably connected to the annular rail. The clamping mechanism includes a long plate mechanism and a short plate mechanism. The long plate mechanism and the short plate mechanism are both slidably connected to the slide rail. The servo motor, the clamping mechanism, and the photosensor are all electrically connected to the control box through electrical signals.

[0006] The present invention is a welding device for producing distribution boxes. The feeding mechanism conveys the steel plates used for assembling the distribution boxes to the clamping mechanism. The length, width and inclination degree of the steel plates are detected by a photosensitive sensor and an electrical signal is sent to the control box. After the long plate mechanism clamps the steel plate, it adjusts the posture of the steel plate to ensure that the steel plate is perpendicular to the horizontal plane. The servo motor outputs a fixed-axis torque to drive the turntable to rotate 90 degrees along the circular track. The short plate mechanism rotates to the clamping station to clamp the next steel plate. The long plate mechanism and the short plate mechanism align the edges of the two steel plates according to the lengths of the two plates. The multi-axis welder welds the weld along the aligned edges of the two plates. After the welding is completed, the turntable rotates 90 degrees again to complete the next set of welding operations until the four plates are welded into the rectangular frame of the distribution box.

[0007] Further, the rotating mechanism further includes a first gear. A circular tooth groove is also provided on the turntable. The output end of the servo motor is fixedly connected to the first gear. The first gear meshes with the tooth surface of the circular tooth groove. There are four groups of slide rails, and the four groups of slide rails are evenly distributed along the circumference of the turntable. There are two groups of long plate mechanisms and two groups of short plate mechanisms. The long plate mechanism and the short plate mechanism are arranged adjacent to each other. The long plate mechanism and the short plate mechanism have the same structure. The long plate mechanism includes a sliding plate. The sliding plate and the short plate mechanism are both slidably connected to the slide rails.

[0008] The servo motor outputs a fixed-axis torque to the first gear according to the electrical signal of the control box. Through the meshing of the first gear and the tooth surface of the circular tooth groove, the fixed-axis torque output by the servo motor is converted into the rotation of the turntable in the circular track. After the first group of long plate mechanisms clamp the first steel plate, the turntable rotates 90 degrees in the specified direction. The first group of short plate mechanisms clamp the second steel plate. The long plate mechanism and the short plate mechanism can be adjusted according to the length of the steel plate. By sliding the sliding plate along the slide rail, the edges of the two steel plates are located perpendicular to the plane of the upper platform of the turntable. The multi-axis welder determines the position of the intersection line of the rectangular frame according to the lengths of the two steel plates. The end of the intersection line close to the multi-axis welder is the weld position, achieving the effect of precise positioning. At the same time, it can ensure that the two steel plates are perpendicular to each other and complete precise seam welding.

[0009] Further, the clamping mechanism further includes a long side opposing mechanism and a short side opposing mechanism. The long side opposing mechanism and the short side opposing mechanism have the same structure. The long side opposing mechanism includes a first motor, a first rack, a second rack and a limiting rod. The first motor, the limiting rod and the short side opposing mechanism are all fixedly connected to the turntable. The first rack and the second rack are both fixedly connected to the sliding plate. The short side opposing mechanism is fixedly connected to the short plate mechanism.

[0010] The first motor outputs a fixed-axis torque according to the electrical signal of the control box, and transmits the torque to the first rack and the second rack. By pulling the first rack and the second rack, the two groups of slides are simultaneously displaced toward or away from each other along the slide rail. The distance between the two groups of slides is adapted to the length of one side of the distribution box. The short-side opposing mechanism has the same operating principle as the short-board mechanism. The spacing between the two groups of short-board mechanisms is adapted to the length of the other side of the distribution box. Through the difference in the spacing between the two groups of long-board mechanisms and the two groups of short-board mechanisms, distribution boxes with rectangular shapes of different side lengths within a certain range can be welded.

[0011] Furthermore, the long side opposing mechanism also includes a second gear, the output end of the first motor is fixedly connected to the second gear, the second gear is meshed with the first rack and the second rack, two groups of limit rods are provided, the limit rods are provided with square holes, and the first rack and the second rack are slidably connected to the square holes.

[0012] The first motor outputs a fixed axis torque to the second gear according to the electrical signal of the control box, and the second gear meshes with the tooth surfaces between the first rack and the second rack to transmit the torque to the first rack and the second rack, so that the first rack and the second rack slide along the square hole.

[0013] Furthermore, the long board mechanism also includes a right-angle frame, a servo cylinder, a slider, a connecting rod, a slide, a linkage mechanism and a top cover. The right-angle frame and the servo cylinder are fixedly connected to the skateboard. The right-angle frame is provided with a through hole and a cross plate. The output end of the servo cylinder is slidably connected to the through hole, and the output end of the servo cylinder is slidably connected to the slider. There are several groups of connecting rods, and the connecting rods are hinged to the slider and the slide. There are two groups of slides and linkage mechanisms. The two groups of slides and linkage mechanisms are arranged on both sides of the slider. A notch is provided on the slide, which is slidably connected to the cross plate, and the top cover is fixedly connected to the right-angle frame.

[0014] The servo cylinder pushes the slider to slide along the right-angle frame according to the electrical signal from the control box. The slider is hinged to the slides on both sides through a connecting rod. When the slider slides along the right-angle frame, the connecting rod rotates to open the slides on both sides, and the notches on the slide slide along the cross plate, causing the linkage mechanism assembled on the slides on both sides to move away from each other.

[0015] Furthermore, the long board mechanism also includes a differential cylinder, the linkage mechanism includes a second motor, a first pulley and a second pulley, the second motor is fixedly connected to the slide, the output end of the second motor is fixedly connected to the first pulley, the second pulley and the differential cylinder are each provided with a plurality of groups, the second pulley and the differential cylinder are linearly evenly distributed along the slide, the first pulley is connected to the second pulley through a belt transmission, the second pulley is rotatably connected to the slide, a slide groove is provided on the top cover, the second pulley is slidably connected to the slide groove, the differential cylinder includes a lower cylinder and a third motor, the lower cylinder is fixedly connected to the second pulley, the first motor, the servo cylinder, the second motor, and the third motor are all connected to the control box through electrical signals.

[0016] The second motor outputs a fixed-axis torque to the first pulley according to the electrical signal from the control box, and transmits the torque through the belt drive between the first pulley and several groups of second pulleys. Several groups of second pulleys transmit the torque to the differential cylinder. When clamping the steel plate, several groups of second pulleys displace away from each other along the chute, causing several differential cylinders linearly distributed along the slide to displace away from each other on both sides. After the steel plate is transported to the middle of the differential cylinders on both sides, the servo cylinder pulls the slider to slide reversely along the right-angle frame, causing several differential cylinders on both sides to clamp the steel plate.

[0017] Further, the differential cylinder further includes an upper cylinder, an upper bevel gear, a lower bevel gear, a first side bevel gear, and a second side bevel gear. The lower cylinder is fixedly connected to the lower bevel gear, the upper cylinder is rotatably connected to the lower cylinder, the upper bevel gear is fixedly connected to the upper cylinder, the first side bevel gear and the second side bevel gear are both rotatably connected to the upper cylinder, the upper bevel gear meshes with the first side bevel gear and the second side bevel gear on the tooth surface, the lower bevel gear meshes with the first side bevel gear and the second side bevel gear on the tooth surface, the third motor is fixedly connected to the first side bevel gear, and the output end of the third motor is fixedly connected to the second side bevel gear.

[0018] After several differential cylinders on both sides clamp the steel plate, several differential cylinders on both sides rotate relative to each other. The control box detects the inclination degree of the steel plate through a photosensor and sends an electrical signal to the third motor. When the steel plate has no inclination, the second pulley transmits the torque to the lower cylinder. While the lower cylinder rotates, it catches the first side bevel gear and the second side bevel gear through the lower bevel gear, and assembles the upper cylinder through the first side bevel gear and the second side bevel gear, driving the upper cylinder to rotate. At this time, the friction coefficient between the upper cylinder and the steel plate is less than the friction coefficient between the lower bevel gear and the first side bevel gear and the second side bevel gear. The upper cylinder will not cause the tooth surface meshing transmission between the lower bevel gear and the first side bevel gear and the second side bevel gear due to the friction with the steel plate, that is, normal clamping and transportation, and the rotational speeds of the lower cylinder and the upper cylinder are the same. When the steel plate has an inclination, the third motor outputs a fixed-axis torque to the second side bevel gear, causing the second side bevel gear to actively rotate and mesh with the lower bevel gear and the upper bevel gear on the tooth surface, driving the upper cylinder to rotate through the upper bevel gear, creating a rotational speed difference between the upper cylinder and the lower cylinder, and correcting the inclination attitude of the steel plate through the speed difference between the upper cylinder and the lower cylinder, making the steel plate perpendicular to the horizontal plane.

[0019] Further, the feeding mechanism further includes a fourth motor, a feeding roller group, a slide bar, a first side chamber, a second side chamber, and a laser source. The fourth motor, the slide bar, the first side chamber, and the second side chamber are all fixedly connected to the assembly frame. The output end of the fourth motor is connected to the feeding roller group through a belt drive. The laser source is fixedly connected to the first side chamber. The first side chamber is provided with a first vertical slit, and the second side chamber is provided with a second vertical slit. The first vertical slit and the second vertical slit are arranged adjacent to each other. There are several groups of photosensors, and several groups of photosensors are linearly distributed along the second vertical slit.

[0020] The output of the fourth motor outputs a fixed-axis torque to drive the feeding roller group through a belt. The feeding roller groups on both sides rotate relatively to clamp the steel plate and slide along the slide bar towards the direction close to the first side chamber. The laser source in the first side chamber emits laser light, and the laser light passes through the first vertical slit and the second vertical slit and is received by several groups of photosensitive sensors in the second side chamber. When the steel plate passes between the first vertical slit and the second vertical slit, the steel plate blocks the light propagation and the photosensitive sensors no longer receive light. The length of the steel plate can be obtained by combining the time when the photosensitive sensors are blocked until they receive light again with the rotation speed of the feeding roller group. The width of the steel plate and the inclination degree of the posture of the steel plate during transportation can be obtained through the number of groups of photosensitive sensors linearly distributed along the second vertical slit that are blocked from receiving light and the time difference between the times when each group of photosensitive sensors is blocked from receiving light.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention designs a feeding mechanism. The length of the steel plate can be obtained by combining the time when the photosensitive sensors are blocked until they receive light again with the rotation speed of the feeding roller group when the steel plate passes between the first vertical slit and the second vertical slit. The width of the steel plate and the inclination degree of the posture of the steel plate during transportation can be obtained through the number of groups of photosensitive sensors linearly distributed along the second vertical slit that are blocked from receiving light and the time difference between the times when each group of photosensitive sensors is blocked from receiving light. The present invention designs a clamping mechanism. The first motor outputs a fixed-axis torque according to the electrical signal of the control box to pull the first rack and the second rack, so that the two groups of sliding plates move towards or away from each other along the slide rail at the same time. The distance between the two groups of sliding plates is adapted to the side length of one side of the distribution box, and the distance between the two groups of short plate mechanisms is adapted to the side length of the other side of the distribution box, so as to be adapted to weld distribution boxes with different side lengths within a certain range. The present invention designs a differential cylinder. When the steel plate is not inclined, the upper cylinder will not cause the meshing transmission of the tooth surfaces between the lower bevel gear and the first side bevel gear and the second side bevel gear due to the friction with the steel plate, that is, normal clamping and transportation, and the rotation speed of the lower cylinder is the same as that of the upper cylinder. When the steel plate is inclined, the third motor outputs a fixed-axis torque to the second side bevel gear, so that the second side bevel gear rotates actively and meshes with the tooth surfaces of the lower bevel gear and the upper bevel gear, so that there is a rotational differential between the upper cylinder and the lower cylinder. The inclined posture of the steel plate is corrected through the differential between the upper cylinder and the lower cylinder, so that the edges of the two plates are perpendicular to the plane of the upper platform of the rotary table. The multi-axis welder determines the position of the intersection line of the rectangular frame according to the lengths of the two plates, and the end of the intersection line close to the multi-axis welder is the weld position, achieving the effect of precise positioning. The present invention can automatically feed and detect the length, width and inclined posture of the steel plate, correct the inclination while clamping to ensure that the two plates are perpendicular to each other, and adapt to the steel plates of distribution boxes with different lengths and widths to complete precise positioning welding. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the rotary mechanism of the present invention;

[0024] Figure 3 Schematic structural diagram of the clamping mechanism of the present invention;

[0025] Figure 4 Schematic structural diagram of the long-side facing mechanism of the present invention;

[0026] Figure 5 Schematic structural diagram of the long-board mechanism of the present invention;

[0027] Figure 6 Schematic structural diagram of the linkage mechanism of the present invention;

[0028] Figure 7 Schematic structural diagram of the differential cylinder of the present invention;

[0029] Figure 8 Schematic structural diagram of the feeding mechanism of the present invention.

[0030] In the figure: 1, chassis; 2, control box; 3, slewing mechanism; 31, servo motor; 32, first gear; 33, turntable; 331, ring gear groove; 332, slide rail; 34, ring rail; 4, clamping mechanism; 41, long-side facing mechanism; 411, first motor; 412, second gear; 413, first rack; 414, second rack; 415, limiting rod; 4151, square hole; 42, long-board mechanism; 421, slide plate; 422, right-angle frame; 4221, through hole; 4222, cross plate; 423, servo cylinder; 424, slider; 425, connecting rod; 426, carriage; 4261, notch; 427, linkage mechanism; 4271, second motor; 4272, first pulley; 4273, second pulley; 428, differential cylinder; 4281, upper cylinder; 4282, lower cylinder; 4283, upper bevel gear; 4284, lower bevel gear; 4285, first side bevel gear; 4286, second side bevel gear; 4287, third motor; 429, top cover; 4291, chute; 43, short-board mechanism; 44, short-side facing mechanism; 5, feeding mechanism; 51, assembly rack; 52, fourth motor; 53, feeding roller set; 54, slide bar; 55, first side chamber; 551, first vertical seam; 56, second side chamber; 561, second vertical seam; 57, laser source; 58, photosensitive sensor; 6, multi-axis welding machine. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] As Figure 1 、Figure 2 As shown in the figure, the technical solution of a welding device with an automatic positioning function for a distribution box provided by the present invention includes a chassis 1, a control box 2, a slewing mechanism 3, a clamping mechanism 4, a feeding mechanism 5 and a multi-axis welding machine 6. The slewing mechanism 3 includes a servo motor 31, a turntable 33 and an annular track 34. A slide rail 332 is provided on the turntable 33. The feeding mechanism 5 includes an assembly frame 51 and a photosensitive sensor 58. The control box 2, the servo motor 31, the annular track 34 and the assembly frame 51 are all fixedly connected to the chassis 1. The turntable 33 is slidably connected to the annular track 34. The clamping mechanism 4 includes a long plate mechanism 42 and a short plate mechanism 43. The long plate mechanism 42 and the short plate mechanism 43 are both slidably connected to the slide rail 332. The servo motor 31, the clamping mechanism 4 and the photosensitive sensor 58 are all electrically connected to the control box 2 through electrical signals.

[0033] The present invention is a welding device for producing distribution boxes. The feeding mechanism 5 transports the steel plates used for assembling the distribution boxes to the clamping mechanism 4. The photosensitive sensor 58 detects the length, width and inclination degree of the steel plates and sends electrical signals to the control box 2. After the long plate mechanism 42 clamps the steel plates, it adjusts the posture of the steel plates to ensure that the steel plates are perpendicular to the horizontal plane. The servo motor 31 outputs a fixed-axis torque to drive the turntable 33 to rotate 90 degrees along the annular track 34. The short plate mechanism 43 rotates to the clamping station to clamp the next steel plate. The long plate mechanism 42 and the short plate mechanism 43 align the edges of the two steel plates according to the lengths of the two plates. The multi-axis welding machine 6 welds the welds along the aligned edges of the two plates. After the welding is completed, the turntable 33 rotates 90 degrees again to complete the next set of welding operations until the four plates are welded into the rectangular frame of the distribution box.

[0034] As Figure 2 、 Figure 3 、 Figure 5 As shown in the figure, the slewing mechanism 3 further includes a first gear 32. A ring gear groove 331 is further provided on the turntable 33. The output end of the servo motor 31 is fixedly connected to the first gear 32. The first gear 32 is meshed with the tooth surface of the ring gear groove 331. There are four groups of slide rails 332. The four groups of slide rails 332 are evenly distributed along the circumference of the turntable 33. There are two groups of long plate mechanisms 42 and two groups of short plate mechanisms 43. The long plate mechanism 42 and the short plate mechanism 43 are arranged adjacent to each other. The long plate mechanism 42 and the short plate mechanism 43 have the same structure. The long plate mechanism 42 includes a slide plate 421. The slide plate 421 and the short plate mechanism 43 are both slidably connected to the slide rail 332.

[0035] The servo motor 31 outputs a fixed-axis torque to the first gear 32 according to the electrical signal of the control box 2. Through the meshing of the tooth surfaces of the first gear 32 and the ring tooth groove 331, the fixed-axis torque output by the servo motor 31 is converted into the rotation of the turntable 33 within the ring rail 34. After the first group of long plate mechanisms 42 clamp the first steel plate, the turntable 33 rotates 90 degrees in the specified direction. The first group of short plate mechanisms 43 clamp the second steel plate. The long plate mechanisms 42 and the short plate mechanisms 43 can be adjusted according to the length of the plate. By sliding the slide plate 421 along the slide rail 332, the edges of the two plates are located perpendicular to the upper platform plane of the turntable 33. The multi-axis welding machine 6 determines the position of the intersection line of the rectangular frame according to the lengths of the two plates. The end of the intersection line close to the multi-axis welding machine 6 is the weld position, achieving the effect of precise positioning. At the same time, it can ensure that the two plates are perpendicular to each other and complete precise welding.

[0036] As Figure 3 、 Figure 4 shown, the clamping mechanism 4 further includes a long side facing mechanism 41 and a short side facing mechanism 44. The long side facing mechanism 41 and the short side facing mechanism 44 have the same structure. The long side facing mechanism 41 includes a first motor 411, a first rack 413, a second rack 414, and a limiting rod 415. The first motor 411, the limiting rod 415, and the short side facing mechanism 44 are all fixedly connected to the turntable 33. The first rack 413 and the second rack 414 are both fixedly connected to the slide plate 421. The short side facing mechanism 44 is fixedly connected to the short plate mechanism 43.

[0037] The first motor 411 outputs a fixed-axis torque according to the electrical signal of the control box 2, transmits the torque to the first rack 413 and the second rack 414, and by pulling the first rack 413 and the second rack 414, the two groups of slide plates 421 move towards or away from each other along the slide rail 332 at the same time. The distance between the two groups of slide plates 421 is adapted to the side length of one side of the distribution box. The operating principle of the short side facing mechanism 44 and the short plate mechanism 43 is the same. The distance between the two groups of short plate mechanisms 43 is adapted to the side length of the other side of the distribution box. By the difference in the distances between the two groups of long plate mechanisms 42 and the two groups of short plate mechanisms 43, the distribution boxes with different side lengths within a certain range can be welded.

[0038] As Figure 3 、 Figure 4 shown, the long side facing mechanism 41 further includes a second gear 412. The output end of the first motor 411 is fixedly connected to the second gear 412. The second gear 412 is in meshing with the tooth surfaces of the first rack 413 and the second rack 414. There are two groups of limiting rods 415, and square holes 4151 are provided on the limiting rods 415. The first rack 413 and the second rack 414 are both slidably connected to the square holes 4151.

[0039] The first motor 411 outputs a fixed axis torque to the second gear 412 according to the electrical signal of the control box 2, and transmits the torque to the first rack 413 and the second rack 414 through the meshing of the tooth surfaces between the second gear 412 and the first rack 413 and the second rack 414, so that the first rack 413 and the second rack 414 slide along the square hole 4151.

[0040] like Figure 5 As shown, the long board mechanism 42 also includes a right-angle frame 422, a servo cylinder 423, a slider 424, a connecting rod 425, a slide 426, a linkage mechanism 427 and a top cover 429. The right-angle frame 422 and the servo cylinder 423 are fixedly connected to the slide plate 421. The right-angle frame 422 is provided with a through hole 4221 and a cross plate 4222. The output end of the servo cylinder 423 is slidably connected to the through hole 4221, and the output end of the servo cylinder 423 is slidably connected to the slider 424. The connecting rod 425 is provided with several groups. The connecting rod 425 is hinged to the slider 424 and the slide 426. The slide 426 and the linkage mechanism 427 are provided with two groups. The two groups of slides 426 and the linkage mechanism 427 are both arranged on both sides of the slider 424. The slide 426 is provided with a notch 4261, which is slidably connected to the cross plate 4222, and the top cover 429 is fixedly connected to the right-angle frame 422.

[0041] The servo cylinder 423 pushes the slider 424 to slide along the right-angle frame 422 according to the electrical signal of the control box 2. The slider 424 and the slides 426 on both sides are hinged through the connecting rod 425. When the slider 424 slides along the right-angle frame 422, the connecting rod 425 rotates to open the slides 426 on both sides, and the notch 4261 on the slide 426 slides along the cross plate 4222, so that the linkage mechanism 427 assembled on the slides 426 on both sides moves to the opposite sides.

[0042] like Figure 6 , Figure 7 As shown, the long board mechanism 42 also includes a differential cylinder 428, and the linkage mechanism 427 includes a second motor 4271, a first pulley 4272 and a second pulley 4273. The second motor 4271 is fixedly connected to the slide 426, and the output end of the second motor 4271 is fixedly connected to the first pulley 4272. The second pulley 4273 and the differential cylinder 428 are each provided with a plurality of groups. The second pulley 4273 and the differential cylinder 428 are linearly evenly distributed along the slide 426. The first pulley 4272 and the second pulley 4273 are fixedly connected to the first pulley 4272. The two pulleys 4273 are connected through belt transmission, the second pulley 4273 is rotatably connected to the slide 426, a slide groove 4291 is provided on the top cover 429, the second pulley 4273 is slidably connected to the slide groove 4291, the differential cylinder 428 includes a lower cylinder 4282 and a third motor 4287, the lower cylinder 4282 is fixedly connected to the second pulley 4273, the first motor 411, the servo cylinder 423, the second motor 4271, and the third motor 4287 are all connected to the control box 2 through electrical signals.

[0043] The second motor 4271 outputs a fixed-axis torque to the first pulley 4272 according to the electrical signal of the control box 2, and transmits the torque through the belt drive between the first pulley 4272 and several groups of second pulleys 4273. Several groups of second pulleys 4273 transmit the torque to the differential cylinder 428. When clamping the steel plate, several groups of second pulleys 4273 move away from each other along the chute 4291, causing several differential cylinders 428 linearly distributed along the slide frame 426 on both sides to move away from each other. After the steel plate is transported to the middle of the differential cylinders 428 on both sides, the servo cylinder 423 pulls the slider 424 to slide reversely along the right-angle frame 422, so that several differential cylinders 428 on both sides clamp the steel plate.

[0044] As Figure 7 shown, the differential cylinder 428 further includes an upper cylinder 4281, an upper bevel gear 4283, a lower bevel gear 4284, a first side bevel gear 4285 and a second side bevel gear 4286. The lower cylinder 4282 is fixedly connected to the lower bevel gear 4284. The upper cylinder 4281 is rotatably connected to the lower cylinder 4282. The upper bevel gear 4283 is fixedly connected to the upper cylinder 4281. The first side bevel gear 4285 and the second side bevel gear 4286 are both rotatably connected to the upper cylinder 4281. The upper bevel gear 4283 is in meshed with the first side bevel gear 4285 and the second side bevel gear 4286 on the tooth surface. The lower bevel gear 4284 is in meshed with the first side bevel gear 4285 and the second side bevel gear 4286 on the tooth surface. The third motor 4287 is fixedly connected to the first side bevel gear 4285, and the output end of the third motor 4287 is fixedly connected to the second side bevel gear 4286.

[0045] After several differential cylinders 428 on both sides clamp the steel plate, several differential cylinders 428 on both sides rotate relative to each other. The control box 2 detects the inclination degree of the steel plate through the photosensitive sensor 58 and sends an electrical signal to the third motor 4287. When the steel plate has no inclination, the second pulley 4273 transmits torque to the lower cylinder 4282. While the lower cylinder 4282 rotates, it catches the first side bevel gear 4285 and the second side bevel gear 4286 through the lower bevel gear 4284. The upper cylinder 4281 is assembled through the first side bevel gear 4285 and the second side bevel gear 4286, driving the upper cylinder 4281 to rotate. At this time, the friction coefficient between the upper cylinder 4281 and the steel plate is less than the friction coefficient between the lower bevel gear 4284 and the first side bevel gear 4285 and the second side bevel gear 4286. The upper cylinder 4281 will not cause the tooth surface meshing transmission between the lower bevel gear 4284 and the first side bevel gear 4285 and the second side bevel gear 4286 due to the friction with the steel plate, that is, normal clamping and transportation. The rotational speed of the lower cylinder 4282 is the same as that of the upper cylinder 4281. When the steel plate has an inclination, the third motor 4287 outputs a fixed-axis torque to the second side bevel gear 4286, making the second side bevel gear 4286 rotate actively and mesh with the tooth surfaces of the lower bevel gear 4284 and the upper bevel gear 4283. The upper cylinder 4281 is driven to rotate through the upper bevel gear 4283, creating a rotational speed difference between the upper cylinder 4281 and the lower cylinder 4282. The inclination attitude of the steel plate is corrected through the speed difference between the upper cylinder 4281 and the lower cylinder 4282, making the steel plate perpendicular to the horizontal plane.

[0046] As Figure 8 shown, the feeding mechanism 5 further includes a fourth motor 52, a feeding roller group 53, a slide bar 54, a first side chamber 55, a second side chamber 56, and a laser source 57. The fourth motor 52, the slide bar 54, the first side chamber 55, and the second side chamber 56 are all fixedly connected to the assembly frame 51. The output end of the fourth motor 52 is connected to the feeding roller group 53 through belt transmission. The laser source 57 is fixedly connected to the first side chamber 55. The first side chamber 55 is provided with a first vertical slit 551, and the second side chamber 56 is provided with a second vertical slit 561. The first vertical slit 551 and the second vertical slit 561 are arranged adjacent to each other. There are several groups of photosensitive sensors 58, and several groups of photosensitive sensors 58 are linearly distributed along the second vertical slit 561.

[0047] The fourth motor 52 outputs a fixed-axis torque and drives the loading roller group 53 through the belt. The loading roller groups 53 on both sides rotate relative to each other to clamp the steel plate and slide along the slide bar 54 toward the first side chamber 55. The laser source 57 in the first side chamber 55 emits a laser, which passes through the first vertical slit 551 and the second vertical slit 561 and is received by several groups of photosensitive sensors 58 in the second side chamber 56. When the steel plate passes between the first vertical slit 551 and the second vertical slit 561, the steel plate blocks the propagation of light and the photosensitive sensor 58 no longer receives light. The length of the steel plate can be obtained by combining the time from when the photosensitive sensor 58 is blocked to when it receives light again with the rotation speed of the loading roller group 53. The width of the steel plate and the degree of inclination of the posture of the steel plate during transportation can be obtained by the number of groups of photosensitive sensors 58 linearly evenly distributed along the second vertical slit 561 that are blocked from receiving light and the time difference between when each group of photosensitive sensors 58 is blocked from receiving light.

[0048] The working principle of the present invention is as follows: the feeding roller groups 53 on both sides rotate relative to each other to clamp and transport the steel plate, detect the length, width and inclination of the steel plate and send an electrical signal to the control box 2, the servo motor 31 drives the turntable 33 to rotate, the first motor 411 outputs a fixed axis torque, and by pulling the first rack 413 and the second rack 414, the two sets of slides 421 are simultaneously displaced toward or away from each other along the slide rail 332, the distance between the two sets of slides 421 is adapted to the length of one side of the distribution box, and the short side opposing mechanism 44 is connected to the short side opposing mechanism 44. The plate mechanism 43 operates on the same principle. The servo cylinder 423 pushes the slider 424 to slide and open the sliders 426 on both sides. The second motor transmits torque to the second pulley 4273 and the differential cylinder 428 through the belt drive. When clamping the steel plate, several groups of second pulleys 4273 and differential cylinders 428 move in opposite directions along the slide groove 4291. After the steel plate is transported to the middle of the differential cylinders 428 on both sides, the servo cylinder 423 pulls the slider 424 in the opposite direction so that the differential cylinders 428 on both sides clamp the steel plate. , a plurality of differential cylinders 428 on both sides rotate relative to each other. When the steel plate is not tilted, the first side bevel gear 4285 and the second side bevel gear 4286 are clamped by the lower bevel gear 4284, that is, normal clamping and transportation, the lower cylinder 4282 and the upper cylinder 4281 have the same rotation speed. When the steel plate is tilted, the third motor 4287 outputs a fixed shaft torque to the second side bevel gear 4286, so that the second side bevel gear 4286 actively rotates and meshes with the tooth surfaces of the lower bevel gear 4284 and the upper bevel gear 4283. The upper cylinder 4281 driven by the upper bevel gear 4283 rotates, so that there is a rotational differential between the upper cylinder 4281 and the lower cylinder 4282. The tilt posture of the steel plate is corrected by the differential between the upper cylinder 4281 and the lower cylinder 4282, so that the steel plate is perpendicular to the horizontal plane, and the edges of the two plates are located perpendicular to the upper platform plane of the turntable 33. The multi-axis welding machine 6 determines the position of the intersection line of the rectangular frame according to the length of the two plates. The end of the intersection line close to the multi-axis welding machine 6 is the weld position, so as to achieve precise positioning welding.

[0049] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Accordingly, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A welding device with an automatic positioning function for a distribution box, characterized in that: The welding equipment includes a chassis (1), a control box (2), a slewing mechanism (3), a clamping mechanism (4), a feeding mechanism (5), and a multi-axis welding machine (6). The slewing mechanism (3) includes a servo motor (31), a slewing table (33), and a ring rail (34). A slide rail (332) is provided on the slewing table (33). The feeding mechanism (5) includes an assembly frame (51) and a photosensor (58). The control box (2), the servo motor (31), the ring rail (34), and the assembly frame (51) are all fixedly connected to the chassis (1). The slewing table (33) is slidably connected to the ring rail (34). The clamping mechanism (4) includes a long plate mechanism (42) and a short plate mechanism (43). The long plate mechanism (42) and the short plate mechanism (43) are both slidably connected to the slide rail (332). The servo motor (31), the clamping mechanism (4), and the photosensor (58) are all connected to the control box (2) through electrical signals; The long plate mechanism (42) includes a slide plate (421). The slide plate (421) and the short plate mechanism (43) are both slidably connected to the slide rail (332). The long plate mechanism (42) further includes a right-angle frame (422), a servo cylinder (423), a slider (424), a connecting rod (425), a carriage (426), a linkage mechanism (427), and a top cover (429); The long plate mechanism (42) further includes a differential cylinder (428). The linkage mechanism (427) includes a second motor (4271), a first pulley (4272), and a second pulley (4273). The differential cylinder (428) includes a lower cylinder (4282) and a third motor (4287). The lower cylinder (4282) is fixedly connected to the second pulley (4273); The differential cylinder (428) further includes an upper cylinder (4281), an upper bevel gear (4283), a lower bevel gear (4284), a first side bevel gear (4285), and a second side bevel gear (4286). The lower cylinder (4282) is fixedly connected to the lower bevel gear (4284). The upper cylinder (4281) is rotatably connected to the lower cylinder (4282). The upper bevel gear (4283) is fixedly connected to the upper cylinder (4281). The first side bevel gear (4285) and the second side bevel gear (4286) are both rotatably connected to the upper cylinder (4281). The upper bevel gear (4283) is in tooth surface engagement with both the first side bevel gear (4285) and the second side bevel gear (4286). The lower bevel gear (4284) is in tooth surface engagement with both the first side bevel gear (4285) and the second side bevel gear (4286). The third motor (4287) is fixedly connected to the first side bevel gear (4285). The output end of the third motor (4287) is fixedly connected to the second side bevel gear (4286).

2. The welding equipment with an automatic positioning function for a distribution box according to claim 1, characterized in that: The slewing mechanism (3) further includes a first gear (32). A ring gear groove (331) is also provided on the slewing platform (33). The output end of the servo motor (31) is fixedly connected to the first gear (32). The first gear (32) is in meshing engagement with the tooth surface of the ring gear groove (331). There are four groups of slide rails (332), and the four groups of slide rails (332) are evenly distributed along the circumference of the slewing platform (33). There are two groups of the long plate mechanisms (42) and the short plate mechanisms (43) respectively. The long plate mechanisms (42) and the short plate mechanisms (43) are arranged adjacent to each other, and the long plate mechanisms (42) and the short plate mechanisms (43) have the same structure.

3. The welding equipment with an automatic positioning function for a distribution box according to claim 2, characterized in that: The clamping mechanism (4) further includes a long-side facing mechanism (41) and a short-side facing mechanism (44). The long-side facing mechanism (41) and the short-side facing mechanism (44) have the same structure. The long-side facing mechanism (41) includes a first motor (411), a first rack (413), a second rack (414) and a limiting rod (415). The first motor (411), the limiting rod (415) and the short-side facing mechanism (44) are all fixedly connected to the slewing platform (33). The first rack (413) and the second rack (414) are both fixedly connected to the slide plate (421). The short-side facing mechanism (44) is fixedly connected to the short plate mechanism (43).

4. The welding equipment with an automatic positioning function for a distribution box according to claim 3, characterized in that: The long-side facing mechanism (41) further includes a second gear (412). The output end of the first motor (411) is fixedly connected to the second gear (412). The second gear (412) is in meshing engagement with both the first rack (413) and the second rack (414). There are two groups of the limiting rods (415), and square holes (4151) are provided on the limiting rods (415). The first rack (413) and the second rack (414) are both slidably connected to the square holes (4151).

5. A welding device with an automatic positioning function for a distribution box according to claim 3, characterized in that: The right-angle frame (422) and the servo cylinder (423) are both fixedly connected to the slide plate (421). A through hole (4221) and a cross plate (4222) are provided on the right-angle frame (422). The output end of the servo cylinder (423) is slidably connected to the through hole (4221). The output end of the servo cylinder (423) is slidably connected to the slider (424). There are several groups of connecting rods (425). The connecting rods (425) are hinged to both the slider (424) and the slide frame (426). There are two groups of the slide frames (426) and the linkage mechanisms (427) respectively. The two groups of the slide frames (426) and the linkage mechanisms (427) are both arranged on both sides of the slider (424). A notch (4261) is provided on the slide frame (426). The notch (4261) is slidably connected to the cross plate (4222). The top cover (429) is fixedly connected to the right-angle frame (422).

6. The welding device with an automatic positioning function for a distribution box according to claim 5, characterized in that: The second motor (4271) is fixedly connected to the carriage (426), and the output end of the second motor (4271) is fixedly connected to the first pulley (4272). There are several groups of the second pulleys (4273) and differential cylinders (428), and several groups of the second pulleys (4273) and differential cylinders (428) are linearly distributed along the carriage (426). The first pulley (4272) is connected to the second pulley (4273) by belt drive. The second pulley (4273) is rotatably connected to the carriage (426). A chute (4291) is provided on the top cover (429), and the second pulley (4273) is slidably connected to the chute (4291). The differential cylinder (428) includes a lower cylinder (4282) and a third motor (4287). The lower cylinder (4282) is fixedly connected to the second pulley (4273). The first motor (411), the servo cylinder (423), the second motor (4271), and the third motor (4287) are all electrically connected to the control box (2) by electrical signals.

7. A welding device with an automatic positioning function for a distribution box according to claim 1, characterized in that: The feeding mechanism (5) further includes a fourth motor (52), a feeding roller set (53), a slide bar (54), a first side chamber (55), a second side chamber (56), and a laser source (57). The fourth motor (52), the slide bar (54), the first side chamber (55), and the second side chamber (56) are all fixedly connected to the assembly frame (51). The output end of the fourth motor (52) is connected to the feeding roller set (53) by belt drive. The laser source (57) is fixedly connected to the first side chamber (55). A first vertical slit (551) is provided on the first side chamber (55), and a second vertical slit (561) is provided on the second side chamber (56). The first vertical slit (551) and the second vertical slit (561) are arranged adjacent to each other. There are several groups of photosensitive sensors (58), and several groups of the photosensitive sensors (58) are linearly distributed along the second vertical slit (561).

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