Automatic Welding Equipment for the Left Side Panel of a Container

Abstract

The present invention discloses an automatic welding device for the left side plate of a container. The welding device includes a splicing and conveying device, a longitudinal seam automatic welding device, a workpiece turning device, a side frame spot welding and middle reinforcing rib welding device, and a corrugated plate side welding device arranged in sequence. The corrugated plate loose parts are spliced and spot welded on the splicing and conveying device, and then conveyed to the longitudinal seam automatic welding device. After the longitudinal seam is welded, it is conveyed to the next working station. The workpiece turning device automatically turns the corrugated plate loose parts and conveys them to the next working station. The side frame and middle reinforcing rib are installed and automatically fixed by the side frame spot welding and middle reinforcing rib welding device. When the workpiece is conveyed to the last working station and turned 90° to be in a vertical state, the corrugated plate side welding device welds the remaining weld seams, and the workpiece is unloaded after completion.

Description

Technical Field

[0001] The present invention relates to a welding device, and particularly to an automatic welding device for the left side plate of a container. Background Art

[0002] For the corrugated board 1' splicing longitudinal seam, the reinforcing rib 2', and the side frame 3' on the left side plate of the container, welding is required. The workpiece is as follows Figure 1 , and generally, for such workpieces, a large number of experienced senior welders are needed for manual welding in general factories.

[0003] The known and publicly disclosed CN201611027621.4, an automatic welding device and an automatic welding method for a container, mainly aim at the inner side plate and the corner post tower of the container, realizing the automatic lifting and automatic welding of the welding mechanism, and by fixing the welding mechanism guide column connected with the welding mechanism to the lifting platform, on the one hand, the welding mechanism can slide up and down on the welding mechanism guide column, and on the other hand, the welding mechanism and the welding mechanism guide column can be lifted and lowered together with the lifting platform. However, it does not provide a welding device for a complete process of the corrugated board and the reinforcing rib, and the corrugated board and the side frame.

[0004] Figure 1 For the workpiece with a wall thickness of only 0.8 mm, the welding and splicing are difficult, defects are easily generated during welding, the weld quality is difficult to control, the labor intensity is high, and the work efficiency is low. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides an automatic welding device for the left side plate of a container with a high degree of automation, reducing the welding and splicing difficulty and stabilizing the weld quality.

[0006] The present invention provides the following technical solutions:

[0007] An automatic welding device for the left side plate of a container, the welding device includes a splicing conveying device, a longitudinal seam automatic welding device, a workpiece turning device, a side frame spot welding and middle reinforcing rib welding device, and a corrugated board side welding device arranged in sequence. The corrugated board loose pieces are spliced and spot welded on the splicing conveying device, and then conveyed to the longitudinal seam automatic welding device. After the longitudinal seam is welded, it is conveyed to the next station. The workpiece turning device can turn the corrugated board loose pieces by 180° while positioning the left and right positions of the workpiece, and then convey it to the next station. The side frame spot welding and middle reinforcing rib welding device installs the side frame and the middle reinforcing rib and automatically fixes them. When the workpiece is conveyed to the last station, the jig turning mechanism in the corrugated board side welding device presses the workpiece and turns it 90° to a vertical state, and then welds the remaining welds. After completion, the workpiece is unloaded.

[0008] Further, the side frame positioning mechanism in the side frame spot welding and middle reinforcing rib welding device installs the upper side frame. The corrugated board rear positioning mechanism pushes the corrugated board onto the side frame of the side frame positioning mechanism, compresses the corrugated board to fit with the side frame. The side frame positioning mechanism moves to a predetermined position driven by a motor, installs the middle reinforcing rib. After installation, the first welding robot welds the middle reinforcing rib and the corrugated board together, and spot welds the side frame and the corrugated board together.

[0009] Further, the splicing and conveying device includes a front positioning block, a workpiece lifting and conveying line, a rear positioning block, a driving motor, a lifting cylinder and a base. The lifting cylinder, the driving motor, the front and rear positioning blocks and the workpiece lifting and conveying line are installed on the base. The front positioning block and the rear positioning block are arranged on the front and rear sides of the workpiece lifting and conveying line. After the corrugated board loose pieces are placed on the front positioning block and the rear positioning block, the worker pushes the workpiece close to the rear positioning block to make the corrugated board flush, and manually spot welds it firmly. The lifting cylinder acts to raise the workpiece lifting and conveying line, and the driving motor acts to convey the workpiece forward to the next station.

[0010] Further, a conveying line structure is arranged after the splicing and conveying device. The conveying line structure includes a front conveying line, a middle conveying line and a rear conveying line. A longitudinal seam automatic welding device is arranged on one side of the middle conveying line. The longitudinal seam automatic welding device includes a laser tracker, an automatic welding torch, a cross welding oscillator and a workpiece centering mechanism. The cross welding oscillator is connected to the automatic welding torch. The laser tracker is installed in front of the automatic welding torch. The workpiece centering mechanism can make the workpiece achieve automatic centering.

[0011] Further, a groove conveying line structure is arranged behind the longitudinal seam automatic welding device. The groove conveying line structure includes a front groove conveying line and a rear groove conveying line. A workpiece turning device is arranged at the groove conveying line structure. The workpiece turning device includes a traveling mechanism arranged on a turning base and a turning motor, a slewing bearing and a turning fixture arranged on a turning bracket. The turning fixture is connected to the turning motor through the slewing bearing. The turning bracket is installed on the turning base. The traveling mechanism includes a guide rail, a traveling motor and a traveling speed reducer. When the workpiece is conveyed in place, it will automatically stop in the middle of the turning fixture. The turning motor acts to drive the slewing bearing and the turning fixture to separate the workpiece from the conveying line, and when the workpiece is turned 90°, it will fall to the bottom of the turning fixture. The traveling motor acts to drive the whole turning fixture to move from one side of the turning base to the other side to reach a predetermined position. The turning fixture continues to turn 90° to place the workpiece on the conveying line.

[0012] Furthermore, the side frame spot welding and middle reinforcing rib welding device includes a lifting conveyor line, a column, a robot moving track, a lower limit mechanism, a middle-strength rib positioning plate, a first robot moving base, a first welding robot, a corrugated board rear positioning mechanism, a lower fixture base, and a side frame positioning mechanism. The robot moving track is installed on the column, and the first welding robot is movably installed on the robot moving track through the first robot moving base. The corrugated board rear positioning mechanism and the side frame positioning mechanism are fixed on the lower fixture base, and the side frame positioning mechanism moves on the lower fixture base. The middle-strength rib positioning plate is installed below the robot moving track and is used to limit the middle-strength rib.

[0013] In the above technical solution, the lower limit mechanism includes a lower limit base, a lower limit column, a lower limit block, a lower limit adjustment block, a pneumatic lifting slide plate, an electric adjustment seat, a lower limit lifting cylinder, a slider, a linear guide rail, and a driving motor. The electric adjustment seat is installed on the lower limit base through the lower limit column. A driving motor is installed on one side of the electric adjustment seat. The linear guide rail and the slider are arranged below the electric adjustment seat. The electric adjustment seat can slide on the lower limit column. The lower limit lifting cylinder drives the pneumatic lifting slide plate, and the lower limit adjustment block is installed on the pneumatic lifting slide plate. The lower limit block is installed on the lower limit adjustment block.

[0014] In the above technical solution, the corrugated board rear positioning mechanism includes a rear positioning member, a slide plate, a workpiece slide plate, and a cylinder. The workpiece slide plate supports the corrugated board, and the rear positioning member moves the corrugated board on the workpiece slide plate to the side under the push of the slide plate and the cylinder.

[0015] In the above technical solution, the side frame positioning mechanism includes a pressing head A, a pressing head B, a lower backing plate, a cross beam, a front limit block, a workpiece slider, a pressing head C, a pressing block, and a pressing cylinder. The pressing head A, the pressing head B, the lower backing plate, and the pressing cylinder are installed on the cross beam. A front limit block is arranged at one end of the cross beam. The front and rear distances of the side frame are positioned through the front limit block. After positioning the left and right positions through the lower backing plate, the pressing head C and the pressing block press the side frame under the action of the pressing cylinder. At this time, the corrugated board is pressed against the side frame through the workpiece slider, and the pressing head A and the pressing head B press the corrugated board to fit the side frame under the action of the pressing cylinder.

[0016] Furthermore, the corrugated board side welding device includes a robot moving ground track, a second robot moving base, a second welding robot, a conveyor line, a workpiece clamping and positioning fixture, and a fixture flipping mechanism. The second robot moving base is installed on the robot moving ground track, and the second welding robot is installed on the robot moving base. The lifting conveyor line subsequently connects to the conveyor line, and the workpiece clamping and positioning fixture and the fixture flipping mechanism are arranged at the conveyor line.

[0017] In the above technical solution, the fixture flipping mechanism includes a flipping protection beam, side flipping longitudinal beams, anti-scratch backing plates, flipping safety seats, flipping safety pins, flipping seats, flipping frames, pressing blocks, upper pressing rods, lower positioning blocks, pressing cylinders, locking cylinders, flipping cylinders, and protection cylinders. Multiple side flipping longitudinal beams are sequentially installed on one side of the flipping frame. Anti-scratch backing plates are installed on the side flipping longitudinal beams. A pressing cylinder and a lower positioning block are installed on the other side of the flipping frame. A pressing block and an upper pressing rod are installed on the lower positioning block. A flipping seat is installed in the middle of the flipping frame. A locking cylinder, a flipping cylinder, and a flipping safety seat are installed on the flipping seat. One end of the flipping protection beam is installed with a protection cylinder. One end of the flipping frame is installed with a flipping cylinder. The locking cylinder is connected to the flipping safety pin, and the flipping safety pin is aligned with the flipping safety seat.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The corrugated board sub-assemblies are spliced and spot-welded on the splicing and conveying device, and then conveyed to the longitudinal seam automatic welding device. After the longitudinal seams are welded, they are conveyed to the next station. The workpiece flipping device automatically flips the corrugated board sub-assemblies and conveys them to the next station. The side frame and middle reinforcing rib are installed and automatically fixed by the side frame spot welding and middle reinforcing rib welding device. When the workpiece is conveyed to the last station and flipped 90° to be in a vertical state, the remaining welds are welded by the corrugated board side welding device. After completion, the workpiece is unloaded. The equipment of the present invention has a fast welding speed, good weld quality, and full-automatic control, greatly reducing the labor intensity of workers and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a workpiece in the prior art.

[0020] Figure 2 It is the overall structure diagram of the present invention.

[0021] Figure 3 It is the top view of the present invention.

[0022] Figure 4 It is the structural schematic diagram of the splicing and conveying device of the present invention.

[0023] Figure 5 For Figure 4 side view.

[0024] Figure 6 For Figure 4 top view.

[0025] Figure 7 It is the structural schematic diagram of the longitudinal seam automatic welding device of the present invention.

[0026] Figure 8 For Figure 7 side view.

[0027] Figure 9 For Figure 7 top view.

[0028] Figure 10 This is a schematic structural diagram of the workpiece flipping device of the present invention.

[0029] Figure 11 is Figure 10 a side view of

[0030] Figure 12 is Figure 10 a top view of

[0031] Figure 13 This is a schematic structural diagram of the side frame spot welding and middle stiffener welding device of the present invention.

[0032] Figure 14 is Figure 13 a side view of

[0033] Figure 15 is Figure 13 a top view of

[0034] Figure 16 This is a schematic structural diagram of the corrugated board side welding device of the present invention.

[0035] Figure 17 is Figure 16 a side view of

[0036] Figure 18 is Figure 16 a top view of

[0037] Figure 19 is Figure 7 a schematic structural diagram of the workpiece centering mechanism in the longitudinal seam automatic welding device.

[0038] Figure 20 This is a schematic structural diagram of the lower limit mechanism in the side frame spot welding and middle stiffener welding device of the present invention.

[0039] Figure 21 is Figure 20 a side view of

[0040] Figure 22 This is a schematic structural diagram of the corrugated board rear positioning mechanism in the side frame spot welding and middle stiffener welding device of the present invention.

[0041] Figure 23 is Figure 22 a top view of

[0042] Figure 24 This is a schematic structural diagram of the side frame positioning mechanism in the side frame spot welding and middle stiffener welding device of the present invention.

[0043] Figure 25 is Figure 24 a side view of

[0044] Figure 26 This is a schematic structural diagram of the fixture flipping mechanism for the side frame spot welding and middle stiffener welding device of the present invention.

[0045] Figure 27 It is Figure 26 a top view of

[0046] Figure 28 It is Figure 26 a side view of

[0047] In the figure: 100, splicing conveying device; 200, longitudinal seam automatic welding device; 300, workpiece flipping device; 400, side frame spot welding and middle stiffener welding device; 500, corrugated board side welding device;

[0048] 11, front positioning block, 12, workpiece lifting conveying line, 13, rear positioning block, 14, driving motor, 15, lifting cylinder, 16, base;

[0049] 21, front conveying line, 22, middle conveying line, 23, workpiece centering mechanism, 24, rear conveying line, 25, laser tracker, 26, automatic welding torch, 27, cross welding oscillator;

[0050] 2301, centering cylinder, 2302, workpiece lifting seat, 2303, right centering slider, 2304, synchronous belt, 2305, centering linear guide rail, 2306, centering linear slider, 2307, left centering slider, 2308, workpiece lifting slider, 2309, workpiece lifting rod;

[0051] 31, front groove conveying line, 32, rear groove conveying line, 33, flipping bracket, 34, flipping fixture, 35, flipping base, 36, flipping motor, 37, slewing bearing, 38, walking motor, 39, walking speed reducer, 310, guide rail;

[0052] 41, lifting conveying line, 42, column, 43, robot moving track, 44, lower limit mechanism, 45, medium-strength rib positioning plate, 46, first robot moving base, 47, first welding robot, 48, corrugated board rear positioning mechanism, 49, lower fixture base, 410, side frame positioning mechanism;

[0053] 441, lower limit base, 442, lower limit column, 443, lower limit stop block, 444, lower limit adjusting block, 445, pneumatic lifting slide plate, 446, electric adjusting seat, 447, lower limit lifting cylinder, 448, slider, 449, linear guide rail, 4410, driving motor;

[0054] 481, rear positioning member, 482, slide plate, 483, workpiece slide plate, 484, cylinder;

[0055] 4101, Compression Head A, 4102, Compression Head B, 4103, Lower Backing Plate, 4104, Compression Head C, 4105, Cross Beam, 4106, Compression Block, 4107, Front Limit Block, 4108, Compression Cylinder, 4109, Workpiece Slide Block;

[0056] 51, Conveyor Line, 52, Workpiece Clamping and Positioning Fixture, 53, Fixture Flipping Mechanism, 54, Robot Moving Rail, 55, Second Robot Moving Base, 56, Second Welding Robot, 57, Safety Light Curtain;

[0057] 531, Flipping Protection Beam, 532, Safety Steel Wire, 533, Side Flipping Longitudinal Beam, 534, Anti-Scrap Backing Plate, 535, Flipping Safety Seat, 536, Flipping Safety Pin, 537, Flipping Seat, 538, Flipping Frame, 539, Compression Block, 5310, Upper Compression Rod, 5311, Lower Positioning Block, 5312, Compression Cylinder, 5313, Locking Cylinder, 5314, Flipping Cylinder, 5315, Protection Cylinder. Detailed Implementation Manner

[0058] 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.

[0059] The automatic welding equipment for the left side plate of the container of the present invention Figure 2 and Figure 3 As shown, the welding equipment includes a splicing and conveying device 100, a longitudinal seam automatic welding device 200, a workpiece flipping device 300, a side frame spot welding and middle reinforcing rib welding device 400, and a corrugated board side welding device 500 arranged in sequence. The corrugated board loose parts are spliced and spot welded on the splicing and conveying device 100, and then conveyed to the longitudinal seam automatic welding device 200. After the longitudinal seam is welded, it is conveyed to the next station. The workpiece flipping device 300 automatically flips the corrugated board loose parts and conveys them to the next station. The side frame and middle reinforcing rib are installed and automatically fixed by the side frame spot welding and middle reinforcing rib welding device 400. When the workpiece is conveyed to the last station and the fixture flipping mechanism in the corrugated board side welding device 500 compresses the workpiece and flips it 90° to a vertical state, the remaining welds are welded, and the workpiece is unloaded after completion.

[0060] Figure 4 、 Figure 5 、 Figure 6As shown in the figure, the splicing and conveying device 100 includes a front positioning block 11, a workpiece lifting and conveying line 12, a rear positioning block 13, a driving motor 14, a lifting cylinder 15, and a base 16. The lifting cylinder 15, the driving motor 14, the front and rear positioning blocks, and the workpiece lifting and conveying line 12 are installed on the base 16. The front positioning block 11 and the rear positioning block 13 are arranged on the front and rear sides of the workpiece lifting and conveying line 12. After the corrugated board parts are placed on the front positioning block 11 and the rear positioning block 13, the worker pushes the workpiece close to the rear positioning block 13 to make the corrugated boards flush, and then manually spot-welds them firmly. Then, the lifting cylinder 15 acts to lift the workpiece lifting and conveying line 12, and the driving motor 14 acts to convey the workpiece forward to the next station.

[0061] A conveying line structure is subsequently arranged for the splicing and conveying device 1. The conveying line structure includes a front conveying line 21, a middle conveying line 22, and a rear conveying line 24.

[0062] Figure 7 、 8 As shown in Fig. 9, a longitudinal seam automatic welding device 200 is arranged on one side of the middle conveying line 22. The longitudinal seam automatic welding device 200 includes a laser tracker 25, an automatic welding torch 26, a cross welding oscillator 27, and a workpiece centering mechanism 23. The cross welding oscillator 27 is connected to the automatic welding torch 26. The laser tracker 25 is installed in front of the automatic welding torch 26. The workpiece centering mechanism 23 can automatically center the workpiece. After precise positioning, welding is then carried out.

[0063] Figure 19 As shown in the figure, the workpiece centering mechanism 23 includes a synchronous belt 2304, a centering linear guide 2305, a centering linear slider 2306, a left centering slider 2307, a workpiece lifting slider 2308, a workpiece lifting rod 2309, a centering cylinder 2301, a workpiece lifting seat 2302, and a right centering slider 2303. The bottoms of the left and right centering sliders 2307 and 2303 are movably installed on the centering linear guide 2305 through the centering linear slider 2306. The workpiece lifting slider 2308 is installed on the workpiece lifting seat 2302 through the workpiece lifting rod 2309. The workpiece centering mechanism 23 drives the workpiece lifting seat 2302, the workpiece lifting rod 2309, and the workpiece lifting slider 2308 to act by the extension of the centering cylinder 2301, so that the workpiece is separated from the conveyor belt. When the centering cylinder 2301 retracts, it drives the synchronous belt 2304 to move. Through the design of clamping different positions of the synchronous belt 2304 on the left and right, the right centering slider 2303 and the left centering slider 2307 can move towards the middle simultaneously, pushing the workpiece to slide on the workpiece lifting slider 2308. After the workpiece is subjected to force on both sides, the centering is completed. Then the centering cylinder 2301 retracts, and the workpiece returns to the conveyor line.

[0064] Figure 10 、 11As shown in Fig. 12, a groove conveyor line structure is provided behind the longitudinal seam automatic welding device 200. The groove conveyor line structure includes a front groove conveyor line 31 and a rear groove conveyor line 32.

[0065] A workpiece turning device 300 is provided at the groove conveyor line structure. The workpiece turning device 300 includes a traveling mechanism provided on a turning base 35 and a turning motor 36, a slewing support 37, and a turning fixture 34 provided on a turning bracket 33. The turning fixture 34 is electrically connected to the turning motor 36 through the slewing support 37. The turning bracket 33 is installed on the turning base 35. The traveling mechanism includes a guide rail 310, a traveling motor 38, and a traveling speed reducer 39. When the workpiece is conveyed in place, it will automatically stop in the middle of the turning fixture 34. The turning motor 36 operates to drive the slewing support 37 and the turning fixture 34 to separate the workpiece from the conveyor line. When the workpiece is turned 90°, the workpiece will fall to the bottom of the turning fixture 34. In this way, the position of the workpiece can be determined. Then the traveling motor 38 operates to drive the entire turning fixture 34 to move from one side of the turning base 35 to the other side to reach a predetermined position. The turning fixture 34 continues to turn 90° to place the workpiece on the conveyor line. Such a process can achieve turning the workpiece 180° while positioning the left and right positions of the workpiece for the use of the next process.

[0066] Figure 13 、 14 As shown in Figs. 14 and 15, the side frame spot welding and middle reinforcing rib welding device 400 includes a lifting conveyor line 41, a column 42, a robot moving track 43, a lower limit mechanism 44, a middle strength rib positioning plate 45, a first robot moving base 46, a first welding robot 47, a corrugated board rear positioning mechanism 48, a lower fixture base 49, and a side frame positioning mechanism 410. The robot moving track 43 is installed on the column 42. The first welding robot 47 is movably installed on the robot moving track 43 through the first robot moving base 46. The corrugated board rear positioning mechanism 48 and the side frame positioning mechanism 410 are fixed on the lower fixture base 49. The side frame positioning mechanism 410 can move on the lower fixture base 49. The middle strength rib positioning plate 45 is installed below the robot moving track 43. The middle strength rib positioning plate 45 is used to limit the middle strength rib.

[0067] Figure 20 、 Figure 21 , the lower limit mechanism 44 includes a lower limit base 441, a lower limit column 442, a lower limit stop block 443, a lower limit adjustment block 444, a pneumatic lifting slide plate 445, an electric adjustment seat 446, a lower limit lifting cylinder 447, a slider 448, a linear guide rail 449, and a drive motor 4410.

[0068] An electric adjustment seat 446 is installed on the lower limit base 441 through a lower limit vertical column 442. A driving motor 4410 is installed on one side of the electric adjustment seat 446. A linear guide 449 and a slider 448 are arranged below the electric adjustment seat 446. The electric adjustment seat 446 can slide on the lower limit vertical column 442. A lower limit lifting cylinder 447 drives a pneumatic lifting slide plate 445. A lower limit adjustment block 444 is installed on the pneumatic lifting slide plate 445, and a lower limit stop block 443 is installed on the lower limit adjustment block 444.

[0069] The lower limit mechanism 44 can position the front and rear distances of the middle reinforcing rib positioning plate. The limit block has a lifting function and can not interfere with the conveying of workpieces on the conveyor belt when the cylinder retracts. The electric adjustment function can adjust the front and rear distances of the limit block, and can automatically switch through a preset program when switching different types of products.

[0070] Figure 22 、 Figure 23 As shown in the figure, the corrugated board rear positioning mechanism 48 includes a rear positioning member 481, a slide plate 482, a workpiece slide plate 483 and a cylinder 484. The corrugated board rear positioning mechanism is mainly used to hold the corrugated board by the workpiece slide plate 483 after the corrugated board arrives. The rear positioning member 481 moves the corrugated board on the workpiece slide plate 483 to the side under the push of the slide plate 482 and the cylinder 484.

[0071] Figure 24 、 Figure 25 As shown in the figure, the side frame positioning mechanism 410 includes a pressing head A4101, a pressing head B4102, a lower backing plate 4103, a cross beam 4105, a front limit block 4107, a workpiece slider 4109, a pressing head C4104, a pressing block 4106, and a pressing cylinder 4108. The pressing head A4101, the pressing head B4102, the lower backing plate 4103 and the pressing cylinder 4108 are installed on the cross beam 4105. A front limit block 4107 is arranged at one end of the cross beam 4105. The front and rear distances of the side frame are positioned by the front limit block 4107. After positioning the left and right positions by the lower backing plate 4103, the pressing head C4104 and the pressing block 4106 press the side frame under the action of the pressing cylinder 4108. At this time, the corrugated board is pressed against the side frame through the workpiece slider 4109, and the pressing head A4101 and the pressing head B4102 press the corrugated board to fit with the side frame under the action of the pressing cylinder 4108.

[0072] After the corrugated board is conveyed to a position by the lifting conveyor line 41, the lifting conveyor line 41 descends, and the corrugated board falls on the post-positioning mechanism 48 of the corrugated board and the side frame positioning mechanism 410. The side frame positioning mechanism 410 first installs the upper side frame. The post-positioning mechanism 48 of the corrugated board pushes the corrugated board onto the side frame of the side frame positioning mechanism 410. The pressing heads A4101 and pressing head 4102B on the side frame positioning mechanism 410 press the corrugated board against the side frame to fit. The post-positioning mechanism 48 of the corrugated board retracts. The side frame positioning mechanism 410 moves to a predetermined position driven by a motor, installs the middle reinforcing rib. After installation, the first welding robot moves on the robot moving track to weld the middle reinforcing rib to the corrugated board and spot-weld the side frame to the corrugated board. After completion, each pressing mechanism releases, and the lifting conveyor line rises to convey the workpiece.

[0073] Figure 16 , 17 As shown in FIGS. 17 and 18, the side welding device 500 for corrugated boards includes a robot moving ground rail 54, a second robot moving base 55, a second welding robot 56, a conveyor line 51, a workpiece clamping and positioning fixture 52, and a fixture flipping mechanism 53. The second robot moving base 55 is installed on the robot moving ground rail 54, and the second welding robot 56 is installed on the second robot moving base 55. The lifting conveyor line 41 subsequently connects to the conveyor line 51. The workpiece clamping and positioning fixture 52 and the fixture flipping mechanism 53 are arranged at the conveyor line 51. The safety light curtain 57 can protect the safety of workers and ensure a safe production environment.

[0074] The fixture flipping mechanism 53 includes a flipping protection beam 531, side flipping longitudinal beams 533, anti-scratch backing plates 534, flipping safety seats 535, flipping safety pins 536, a flipping seat 537, a flipping frame 538, pressing blocks 539, upper pressing rods 5310, lower positioning blocks 5311, pressing cylinders 5312, locking cylinders 5313, flipping cylinders 5314, and protection cylinders 5315. A plurality of side flipping longitudinal beams 533 are sequentially installed on one side of the flipping frame 538, and the anti-scratch backing plates 534 are installed on the side flipping longitudinal beams 533. The pressing cylinder 5312 and the lower positioning block 5311 are installed on the other side of the flipping frame 538. The pressing blocks 539 and the upper pressing rods 5310 are installed on the lower positioning block 5311. The flipping seat 537 is installed in the middle of the flipping frame 538, and the locking cylinder 5313, the flipping cylinder 5314, and the flipping safety seat 535 are installed on the flipping seat 537. One end of the flipping protection beam 531 installs the protection cylinder 5315, and one end of the flipping frame 538 installs the flipping cylinder 5314. The locking cylinder 5313 is connected to the flipping safety pin 536, and the flipping safety pin 536 is aligned with the flipping safety seat 535.

[0075] The safety wire 532 is installed on the flipping protection beam 531.

[0076] After the workpiece enters the fixture flipping mechanism 53, it lands on the anti-scratch backing plate 534. The operator manually pulls the workpiece onto the lower positioning block 5311. The locking cylinder 5313 actuates to drive the upper pressing rod 5310 and the pressing block 539 to clamp the workpiece. The protection cylinder 5315 actuates to drive the flipping protection beam 531. The safety wire 532 adheres to the workpiece. The locking cylinder 5313 retracts to pull back the flipping safety pin 536. The flipping cylinder 5314 retracts and the flipping frame 538 starts to flip by 90°. After flipping in place, the locking cylinder 5313 extends and the flipping safety pin 536 inserts into the flipping safety seat 535.

[0077] The conveyor line transports the corrugated board to a suitable position and stops. The conveyor line 51 descends, and the workpiece lands on the anti-scratch backing plate 534 of the fixture flipping mechanism 53. The fixture flipping mechanism 53 operates, clamps the workpiece, and flips it by 90°. The second welding robot works. After welding is completed, the fixture flipping mechanism 53 returns. The workpiece clamping and positioning fixture 52 releases, and the conveyor line 51 ascends to unload the workpiece.

[0078] The structural schematic diagram of the automatic welding equipment for the left side plate of the container is as follows:

[0079] 1. The operator spot-welds the corrugated board on the splicing and conveying device 100. Using the positioning edge line of the platform, after manually pushing and pressing it tightly, it is spot-welded against the reference side. Since one side is the reference, it is necessary to control the overall length accuracy of the corrugated board, control the gap of the subsequent assembled welds, and spot-weld the starting and ending plates.

[0080] 2. After spot-welding is completed, the spot-welding worker presses the "Spot-welding Completed" buttons on both sides and then leaves the spot-welding area. The drive motor 14 operates to send the spot-welded workpiece to the next process.

[0081] 3. Set the welding lengths of the left and right welding torches and the total width of the corrugated board on the longitudinal seam automatic welding device 200 respectively. The splicing and conveying device 100 transports the corrugated board that has been spot-welded in the previous process. When it reaches the preset position, the workpiece centering mechanism 23 lifts the workpiece to automatically center the workpiece, and then descends and transports it to the welding position. The longitudinal seam welding equipment automatically clamps the workpiece and performs automatic welding at the automatic butt welding position of the spliced plates. After welding is completed, it moves to the next position for automatic welding of the next straight seam. Until all the straight seams of the corrugated board are welded, the conveyor line operates to send the welded corrugated board to the next station.

[0082] 4. After the workpiece is transported to the workpiece flipping device 300, it stops at the specified position according to the preset program. The flipping device clamps the workpiece, first flips the workpiece by 90°, then the flipping device holds the workpiece and moves it to the other side, and then continues to flip it by 90°. The workpiece is placed on the conveyor line. After confirming that the next station can receive it, it is automatically transported to the next station.

[0083] 5. Manually install the intermediate crossbeam and the top crossbeam on the side frame spot welding and middle stiffener welding device 400 according to the positions of the positioning jigs. After positioning, use a robot to automatically weld the intermediate crossbeam and complete the automatic spot welding of the top crossbeam. After welding is completed, the jig automatically releases and conveys the workpiece to the next station through the conveying platform.

[0084] 6. The workpiece completed with spot welding in the previous process is conveyed to the corrugated board side welding device 500 by a belt. After being positioned by the tooling and positioning device, it is flipped 90 degrees by the flipping device, and then the robot realizes the automatic welding of the corrugated board and the top crossbeam.

[0085] 7. Manually lift the workpiece off after welding is completed.

[0086] 8. The control system adopts PLC control, with one-key operation, which is simple and convenient to operate and is suitable for welding workpieces of various specifications. And the jig can be automatically adjusted by setting parameters. Except for spot welding and manually loading the side frame and the middle stiffener, the rest can realize the full automation of the welding process. It can reduce 8 welding workers and improve the production efficiency.

[0087] Production capacity: Designed according to the production capacity of JPH = 8 (10 hours per shift).

[0088] Product changeover: The range of product X produced by this production line is 2600mm - 4500mm, and the range of Y is 1600mm - 2600mm. When the above specifications of the workpiece are met, only the corresponding product parameters need to be input in the human-machine interface, and then the servo unit on the production line will automatically adjust to produce products of other length and width specifications.

[0089] Except for manual spot welding at the first station, the rest of the equipment is fully automatic welding. The equipment has a fast welding speed, good weld quality, full automatic control, and simple operation. It greatly reduces the labor intensity of workers and improves work efficiency.

[0090] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Automatic welding equipment for the left side plate of a container, Characterized in that: The welding equipment includes a splicing and conveying device (100), a longitudinal seam automatic welding device (200), a workpiece flipping device (300), a side frame spot welding and middle reinforcing rib welding device (400), and a corrugated board side welding device (500) arranged in sequence. The corrugated board loose pieces are spliced and spot welded on the splicing and conveying device (100), and then conveyed to the longitudinal seam automatic welding device (200). After the longitudinal seam is welded, it is conveyed to the next working station. The workpiece flipping device (300) flips the corrugated board loose pieces by 180° and can position the left and right positions of the workpiece at the same time, and then conveys it to the next working station. The side frame spot welding and middle reinforcing rib welding device (400) installs the side frame and the middle reinforcing rib and automatically fixes them. The workpiece is conveyed to the last working station. When the fixture flipping mechanism in the corrugated board side welding device (500) presses the workpiece and flips it 90° to a vertical state, the remaining welds are welded, and the workpiece is unloaded after completion; The side frame spot welding and middle reinforcing rib welding device (400) includes a lifting and conveying line (41), a column (42), a robot moving track (43), a lower limit mechanism (44), a middle strength rib positioning plate (45), a first robot moving base (46), a first welding robot (47), a corrugated board rear positioning mechanism (48), a lower fixture base (49), and a side frame positioning mechanism (410). The robot moving track (43) is installed on the column (42). The first welding robot (47) is movably installed on the robot moving track (43) through the first robot moving base (46). The corrugated board rear positioning mechanism (48) and the side frame positioning mechanism (410) are fixed on the lower fixture base (49). The side frame positioning mechanism (410) moves on the lower fixture base (49). The middle strength rib positioning plate (45) is installed below the robot moving track (43), and the middle strength rib positioning plate (45) is used to limit the middle strength rib; After the corrugated board is conveyed to the position by the lifting and conveying line (41), the lifting and conveying line (41) descends. The corrugated board falls on the corrugated board rear positioning mechanism (48) and the side frame positioning mechanism (410). The side frame positioning mechanism (410) first installs the upper side frame. The corrugated board rear positioning mechanism (48) pushes the corrugated board onto the side frame of the side frame positioning mechanism (410). The pressing head A (4101) and the pressing head B (4102) on the side frame positioning mechanism (410) press the corrugated board and the side frame to fit. The corrugated board rear positioning mechanism (48) retracts. The side frame positioning mechanism (410) moves to a predetermined position driven by a motor, installs the middle reinforcing rib. After installation, the first welding robot (47) moves on the robot moving track to weld the middle reinforcing rib and the corrugated board together, and spot welds the side frame and the corrugated board together. After completion, each pressing mechanism is loosened and the lifting and conveying line rises to convey the workpiece.

2. The automatic welding equipment for the left side plate of a container according to claim 1, Characterized in that: In the side frame positioning mechanism (410) of the side frame spot welding and middle reinforcing rib welding device (400), the upper side frame is installed. The corrugated board rear positioning mechanism (48) pushes the corrugated board onto the side frame of the side frame positioning mechanism (410), compresses the corrugated board to fit with the side frame. The side frame positioning mechanism (410) moves to a predetermined position under the drive of the motor, installs the middle reinforcing rib. After installation, the first welding robot (47) welds the middle reinforcing rib and the corrugated board together, and spot welds the side frame and the corrugated board together.

3. The automatic welding equipment for the left side plate of the container according to claim 1, characterized in that: The splicing and conveying device (100) includes a front positioning block (11), a workpiece lifting and conveying line (12), a rear positioning block (13), a driving motor (14), a lifting cylinder (15) and a base (16). The lifting cylinder (15), the driving motor (14), the front and rear positioning blocks and the workpiece lifting and conveying line (12) are installed on the base (16). The front positioning block (11) and the rear positioning block (13) are arranged on the front and rear sides of the workpiece lifting and conveying line (12). After the corrugated board loose parts are placed on the front positioning block (11) and the rear positioning block (13), the workpiece is manually pushed close to the rear positioning block (13) to make the corrugated board flush, and manually spot welded firmly. The lifting cylinder (15) acts to lift the workpiece lifting and conveying line (12), and the driving motor (14) acts to convey the workpiece forward to the next working station.

4. The automatic welding equipment for the left side plate of the container according to claim 1, characterized in that: A conveying line structure is arranged subsequent to the splicing and conveying device (100). The conveying line structure includes a front conveying line (21), a middle conveying line (22) and a rear conveying line (24). A longitudinal seam automatic welding device (200) is arranged on one side of the middle conveying line (22). The longitudinal seam automatic welding device (200) includes a laser tracker (25), an automatic welding torch (26), a cross welding oscillator (27), and a workpiece centering mechanism (23). The cross welding oscillator (27) is connected to the automatic welding torch (26). The laser tracker (25) is installed in front of the automatic welding torch (26). The workpiece centering mechanism (23) can enable the workpiece to achieve automatic centering.

5. The automatic welding equipment for the left side plate of the container according to claim 1, characterized in that: A groove conveyor line structure is arranged behind the longitudinal seam automatic welding device (200). The groove conveyor line structure includes a front groove conveyor line (31) and a rear groove conveyor line (32). A workpiece turnover device (300) is arranged at the groove conveyor line structure. The workpiece turnover device (300) includes a traveling mechanism arranged on a turnover base (35) and a turnover motor (36), a slewing support (37), and a turnover fixture (34) arranged on a turnover bracket (33). The turnover fixture (34) is electrically connected to the turnover motor (36) through the slewing support (37). The turnover bracket (33) is installed on the turnover base (35). The traveling mechanism includes a guide rail (310), a traveling motor (38), and a traveling speed reducer (39). When the workpiece is conveyed in place, it will automatically stop in the middle of the turnover fixture (34). The turnover motor (36) acts to drive the slewing support (37) and the turnover fixture (34) to separate the workpiece from the conveyor line. When the workpiece is turned 90°, it will fall to the bottom of the turnover fixture (34). The traveling motor (38) acts to drive the entire turnover fixture (34) to move from one side of the turnover base (35) to the other side to reach a predetermined position. The turnover fixture (34) continues to turn 90° to place the workpiece on the conveyor line.

6. The automatic welding equipment for the left side plate of a container according to claim 1, characterized in that: The lower limit mechanism (44) includes a lower limit base (441), a lower limit column (442), a lower limit stop block (443), a lower limit adjustment block (444), a pneumatic lifting slide plate (445), an electric adjustment seat (446), a lower limit lifting cylinder (447), a slider (448), a linear guide rail (449), and a driving motor (4410). The electric adjustment seat (446) is installed on the lower limit base (441) through the lower limit column (442). A driving motor (4410) is installed on one side of the electric adjustment seat (446). A linear guide rail (449) and a slider (448) are arranged below the electric adjustment seat (446). The electric adjustment seat (446) can slide on the lower limit column (442). The lower limit lifting cylinder (447) drives the pneumatic lifting slide plate (445). The lower limit adjustment block (444) is installed on the pneumatic lifting slide plate (445). The lower limit stop block (443) is installed on the lower limit adjustment block (444).

7. The automatic welding equipment for the left side plate of a container according to claim 1, characterized in that: The corrugated board rear positioning mechanism (48) includes a rear positioning member (481), a slide plate (482), a workpiece slide plate (483), and a cylinder (484). The workpiece slide plate (483) holds the corrugated board. The rear positioning member (481) is pushed by the slide plate (482) and the cylinder (484) to push against the corrugated board and move on the workpiece slide plate (483) to reach the side.

8. The automatic welding equipment for the left side plate of a container according to claim 1, characterized in that: The side frame positioning mechanism (410) includes a pressing head A (4101), a pressing head B (4102), a lower backing plate (4103), a cross beam (4105), a front limit block (4107), a workpiece slider (4109), a pressing head C (4104), a pressing block (4106), and a pressing cylinder (4108). The pressing head A (4101), the pressing head B (4102), the lower backing plate (4103), and the pressing cylinder (4108) are installed on the cross beam (4105). A front limit block (4107) is provided at one end of the cross beam (4105). The front and rear distance of the side frame is positioned by the front limit block (4107). After the left and right positions are positioned by the lower backing plate (4103), the pressing head C (4104) and the pressing block (4106) press the side frame under the action of the pressing cylinder (4108). At this time, the corrugated board is pressed against the side frame through the workpiece slider (4109). The pressing head A (4101) and the pressing head B (4102) press the corrugated board to fit with the side frame under the action of the pressing cylinder (4108).

9. The automatic welding equipment for the left side plate of a container according to claim 1, characterized in that: The corrugated board side welding device (500) includes a robot moving track (54), a second robot moving base (55), a second welding robot (56), a conveyor line (51), a workpiece clamping and positioning fixture (52), and a fixture flipping mechanism (53). The second robot moving base (55) is installed on the robot moving track (54), and the second welding robot (56) is installed on the second robot moving base (55). The lifting conveyor line (41) subsequently connects to the conveyor line (51). The workpiece clamping and positioning fixture (52) and the fixture flipping mechanism (53) are provided at the conveyor line (51).

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