CN111390335A - Automatic welding process for plate splicing welding of container - Google Patents

Automatic welding process for plate splicing welding of container Download PDF

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Publication number
CN111390335A
CN111390335A CN202010240414.7A CN202010240414A CN111390335A CN 111390335 A CN111390335 A CN 111390335A CN 202010240414 A CN202010240414 A CN 202010240414A CN 111390335 A CN111390335 A CN 111390335A
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welding
gun
controller
camera
robot
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CN202010240414.7A
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CN111390335B (en
Inventor
胡鑫
夏恒超
陈聖达
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Shaoxing Hanli Industrial Automation Science & Technology Co ltd
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Shaoxing Hanli Industrial Automation Science & Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/02Seam welding; Backing means; Inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/0026Arc welding or cutting specially adapted for particular articles or work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/10Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006Power supply
    • B23K9/1043Power supply characterised by the electric circuit
    • B23K9/1056Power supply characterised by the electric circuit by using digital means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/12Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/12Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/124Circuits or methods for feeding welding wire
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/12Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/127Means for tracking lines during arc welding or cutting
    • B23K9/1272Geometry oriented, e.g. beam optical trading
    • B23K9/1274Using non-contact, optical means, e.g. laser means

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Manipulator (AREA)

Abstract

The invention mainly relates to an automatic welding process for welding jointed boards of containers, which comprises the steps of compressing a workpiece, starting a welding robot P L C controller to control a camera to descend and move, moving the camera to a scanning starting point and extending the camera for a certain distance outwards, starting to scan a welding seam, transmitting scanning information to a central control system for processing, transmitting the processed information to a P L C controller, controlling a welding gun to move by the P L C controller according to a first coordinate point and a compensation distance to realize gun alignment, starting welding work, starting arc striking first, controlling the welding gun to start welding by the P L C controller according to coordinate information after the arc striking is finished, moving the welding gun for a certain distance continuously after the welding is finished, realizing arc striking, stopping the welding, raising the welding gun, returning the welding robot to a reset position, waiting for the next cycle, automatically welding containers, having high welding precision, compressing and jointing seams among the jointed boards, ensuring the welding quality, greatly improving the working efficiency of enterprises, and improving the economic benefits of the enterprises.

Description

Automatic welding process for plate splicing welding of container
Technical Field
The invention relates to an automatic welding process for plate splicing welding of a container, and belongs to the field of container welding.
Background
The wall plate of the container is formed by welding a frame and corrugated plates, and the two corrugated plates need to be welded by splicing and welding to realize the mutual fixed connection of the two corrugated plates, as shown in figure 5; the welding of present container wallboard makeup welding is mostly accomplished by the manual work, and the container is bulky, and the manual welding degree of difficulty is big, and intensity of labour is high, and welding quality is poor, and work efficiency is very low.
Disclosure of Invention
In order to solve the problems, the invention provides an automatic welding process for the plate-splicing welding of the container, which can automatically perform the plate-splicing welding of the container, has high welding precision, compresses and closes the joint between the plate-splicing welding, ensures the welding quality, greatly improves the working efficiency and improves the economic benefit of enterprises.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic welding process for the plate-splicing welding of containers includes such steps as pressing workpiece by pressing mechanism, starting the welding robot, controlling the camera to move up and down by P L C controller, moving the camera to scan start point, extending it a certain distance, scanning the welding seam, sending the scan information to central control system, sending the coordinate information to P L C controller, collecting the camera, controlling the welding gun by P L C controller according to the first coordinate point and compensating distance, starting welding by P L C controller, starting welding power supply, feeding welding gun, starting arc starting, and controlling the welding gun by P L C controller according to the coordinate information.
The welding seam identification method comprises the steps that a camera is moved to scan the whole welding seam, a picture of the welding seam is taken every 50mm, a central control system identifies the central point of each section of the welding seam through a characteristic line algorithm, the central points are fitted into a complete welding seam straight line to obtain corresponding coordinate information, meanwhile, the welding time of each section is set according to the width of each section of the welding seam, information data are transmitted to a P L C controller, and welding control of a welding gun is achieved.
The dual-computer mode specifically comprises the following steps:
(1) the corrugated plate is placed on the welding rack, a worker operates the pressing mechanism to press the workpiece, and the left welding robot and the right welding robot are in the middle reset position at the moment;
(2) a worker starts the left welding robot and the right welding robot, the central control system controls the camera to descend through the P L C controller, and controls the splash-proof protective cover to be opened;
(3) after the welding robot descends, the P L C controller controls the cameras on the left and right welding robots to move, the cameras are moved to respective scanning starting points and extend outwards for a certain distance, the left and right cameras scan from the middle of the welding seam to two sides, and the cameras on the left and right sides move in a staggered manner;
(4) after the camera arrives, the welding seam is scanned, and the scanning distance is set in advance;
(5) after the scanning is finished, transmitting the scanning information to a central control system for processing, transmitting the coordinate information obtained after the processing to a P L C controller, and simultaneously, lifting a camera and closing the anti-splashing protective cover;
(6) the P L C controller controls the welding gun of the welding robot to move according to the first coordinate point and the compensation distance, so that gun alignment is realized;
(7) after the movement is finished, the P L C controller controls the welding gun to descend;
(8) manually detecting whether gun compensation needs to be carried out for the second time, if the gun compensation needs to be carried out, pausing, carrying out X, Y-direction adjustment on the gun through a wireless remote controller, continuing to start after the adjustment is finished, starting welding work, and sending an adjustment parameter to a central control system for data compensation and updating; if the gun is accurate, directly starting welding work;
(9) the P L C controller starts a welding power supply, the wire feeder works to feed wires to the welding guns, arcing is firstly carried out, and after the arcing is finished, the P L C controller controls the left welding gun and the right welding gun to start welding from two sides to the middle according to coordinate information;
(10) after welding is finished, moving the welding gun to continue to walk for a certain distance to achieve arc closing, then stopping welding, raising the welding gun, and returning the welding robot to the middle reset position;
(11) and (5) loosening the pressing mechanism, waiting for manual workpiece conveying, ending the process, and waiting for the next cycle.
The left machine and the right machine specifically comprise the following steps:
(1) the corrugated plate is placed on the welding rack, a worker operates the pressing mechanism to press the workpiece, and the welding robot is located at the middle reset position;
(2) a worker starts a single welding robot, the central control system controls the camera to descend through the P L C controller, and controls the anti-splashing protective cover to be opened;
(3) after the descending is finished, the P L C controller controls the camera on the welding robot to move, and the camera is moved to the scanning starting point and then extends outwards for a certain distance;
(4) after the camera arrives, the welding seam is scanned, and the scanning distance is set in advance;
(5) after the scanning is finished, transmitting the scanning information to a central control system for processing, transmitting the coordinate information obtained after the processing to a P L C controller, and simultaneously, lifting a camera and closing the anti-splashing protective cover;
(6) the P L C controller controls the welding gun of the welding robot to move according to the first coordinate point and the compensation distance, so that gun alignment is realized;
(7) after the movement is finished, the P L C controller controls the welding gun to descend;
(8) manually detecting whether gun compensation needs to be carried out for the second time, if the gun compensation needs to be carried out, pausing, carrying out X, Y-direction adjustment on the gun through a wireless remote controller, continuing to start after the adjustment is finished, starting welding work, and sending an adjustment parameter to a central control system for data compensation and updating; if the gun is accurate, directly starting welding work;
(9) the P L C controller starts a welding power supply, the wire feeder works to feed wires to the welding gun, the arc striking is firstly carried out, and after the arc striking is finished, the P L C controller controls the welding gun to start welding according to the coordinate information;
(10) after welding is finished, moving the welding gun to continue to walk for a certain distance to achieve arc closing, then stopping welding, raising the welding gun, and returning the welding robot to the middle reset position;
(11) and (5) loosening the pressing mechanism, waiting for manual workpiece conveying, ending the process, and waiting for the next cycle.
The welding machine comprises a welding rack, wherein a cross beam is arranged on the welding rack, two welding robots are arranged on the cross beam, the welding robots can move on the cross beam, the moving direction is consistent with the welding direction of a welding seam of a jointed board, a central control system controls the welding robots to move through a P L C controller, welding guns and cameras are arranged on the welding robots, the P L C controller is connected with a welding power supply, the welding power supply is connected with a wire feeder and provides power for the wire feeder, the wire feeder is connected with the welding guns, the cameras are in transmission connection with the central control system and used for photographing and scanning, scanned information is transmitted to the central control system to be processed, calculated and identified by the welding seam, the central control system transmits the processed information to a P L C controller, and the P L C controller controls the welding robots to move, so that.
Welding robot adopt the three-axis welding robot of rectangular coordinate system, include X, Y, Z, the X direction is the direction unanimous with makeup welding seam welding, the Y direction be with makeup welding seam vertically direction, the Z direction is direction of height.
The welding machine frame is provided with a plurality of limit switch mechanisms, and each limit switch mechanism comprises a left end limit, a left middle limit, an anti-collision limit, a right middle limit and a right end limit; the left end limit and the left middle limit are used for limiting the movement of the left welding robot in the X-axis direction; the right middle limit and the right end limit are used for limiting the movement of the right welding robot in the X-axis direction; the anti-collision limit is used for preventing the left and right welding robots from colliding.
The welding machine frame is provided with a pressing mechanism, the pressing mechanism is used for pressing corrugated plates to be welded, and the pressing mechanism is driven by an air cylinder; the camera is provided with an anti-splashing protective cover which is driven by an air cylinder.
The supporting clear rifle ware and the wireless remote controller of being provided with, wireless remote controller and central control system wireless connection, wireless remote controller can carry out X, Y, Z three direction's mobility control to welding robot, has realized fast to the rifle.
The camera adopts 30 ten thousand pixel black and white industrial camera Basler acA640-120gm GigE, and is equipped with Sony ICX618 CCD photosensitive chip, 120 frames of image per second and VGA resolution.
The invention has the following beneficial effects:
1. an automatic welding process for welding jointed boards of containers includes such steps as pressing workpiece by pressing mechanism, starting welding robot, controlling camera to move down and move by P L C controller, moving the camera to scan start point, extending it a certain distance, scanning welding seam, transmitting the scan information to central control system, transmitting the coordinate information to P L C controller, collecting camera, controlling welding gun to move by P L C controller, starting welding gun, starting welding by P L C controller, starting welding power supply, feeding welding gun by wire feeder, starting arc starting, controlling welding gun by P L C controller, and raising welding gun.
2. The welding machine frame is provided with a plurality of limit switch mechanisms, and each limit switch mechanism comprises a left end limit, a left middle limit, an anti-collision limit, a right middle limit and a right end limit; the left end limit and the left middle limit are used for limiting the movement of the left welding robot in the X-axis direction; the right middle limit and the right end limit are used for limiting the movement of the right welding robot in the X-axis direction; the anti-collision limit is used for preventing the left and right welding robots from colliding.
3. The device is divided into three working modes of a double machine, a left machine and a right machine, the double machine mode is to divide a welding line into a left section and a right section, and the left welding robot and the right welding robot are matched to complete the welding work of the sections in the corresponding directions, so that the working efficiency is improved; the left machine mode and the right machine mode are that a single welding robot carries out welding work, and the mode can be used when the length of a welding seam is short or one of the welding machines is in a non-working state.
Drawings
FIG. 1 is a system control framework of the present invention;
FIG. 2 is a side view of the apparatus of the present invention;
FIG. 3 is a schematic view of the apparatus of the present invention;
FIG. 4 is a front view of the apparatus of the present invention;
FIG. 5 is a schematic view of a weld joint of the plate welding of the present invention.
The welding robot comprises a welding frame, a beam, a welding robot, a central control system, a P L C controller, a welding gun, a camera, a limit switch mechanism, a left end limit, a left middle limit, a right end limit, a right middle limit, a right end limit, a pressing mechanism and a jointed plate welding seam, wherein the number of the welding robot in the drawing is 1, the beam is 2, the welding robot is 3, the central control system is 4, the P L C controller is 5, the welding gun is 6, the camera is 7, the limit switch mechanism is 8, the.
Detailed Description
As shown in figures 1, 2 and 4, the automatic welding process for welding the jointed boards of the containers comprises a welding rack 1, wherein a beam 2 is arranged on the welding rack 1, two welding robots 3 are arranged on the beam 2, the welding robots 3 can move on the beam 2, the moving direction is consistent with the welding direction of the jointed board welding seam, a central control system 4 controls the welding robots 3 to move through a P L C controller 5, welding guns 6 and cameras 7 are arranged on the welding robots 3, the P L C controller 5 is connected with a welding power supply, the welding power supply is connected with a wire feeder, the wire feeder is connected with the welding guns 6, the cameras 7 are in transmission connection with the central control system 4, the cameras 7 are used for shooting and scanning, the scanned information is transmitted to the central control system 4 for processing operation welding seam recognition, the central control system 4 transmits the processed information to the P L C controller 5, the P L C controller 5 controls the welding robots 3 to move, the welding operation of the containers is achieved, the jointed boards can be automatically welded, the welding precision is high, the joint seam is compacted between the welding quality is guaranteed, the working efficiency is improved, and the economic benefit of enterprises is greatly improved.
Welding robot 3 adopts the triaxial welding robot 3 of rectangular coordinate system, including X, Y, Z, the X direction is the direction (left and right sides) unanimous with makeup welding seam welding, and the Y direction is with makeup welding seam vertically direction (front and back), and the Z direction is direction of height (upper and lower).
As shown in fig. 3, the welding frame 1 is provided with a plurality of limit switch mechanisms 8, and each limit switch mechanism 8 comprises a left end limit 81, a left middle limit 82, an anti-collision limit 83, a right middle limit 84 and a right end limit 85; the left end limit 81 and the left middle limit 82 are used for limiting the movement of the left welding robot in the X-axis direction; the right middle limit 84 and the right end limit 85 are used for limiting the movement of the right welding robot in the X-axis direction; the collision avoidance stopper 83 is used to prevent the left and right welding robots 3 from colliding.
The welding machine frame 1 is provided with a pressing mechanism 9, the pressing mechanism 9 is used for pressing corrugated plates to be welded, and the pressing mechanism 9 is driven by an air cylinder.
The camera 7 is provided with an anti-splashing protective cover which plays a role in protection during welding and is driven by the cylinder.
On the basis of the scheme, the gun cleaning device is preferably arranged in a matched mode.
On the basis of the above scheme, more preferably, the gun welding system is further provided with a wireless remote controller, the wireless remote controller is in wireless connection with the central control system 4, the wireless remote controller can carry out X, Y, Z movement control on the welding robot 3 in three directions, and the gun welding system is fast.
The camera 7 adopts 30 ten thousand pixel black and white industrial camera Basler acA640-120gm GigE, the camera 7 is equipped with SonyICX618 CCD photosensitive chip, 120 frames of image per second, VGA resolution.
The device is divided into three working modes of a double machine, a left machine and a right machine, the double machine mode is to divide a welding line into a left section and a right section, and the left welding robot 3 and the right welding robot are matched to complete the welding work of the sections in corresponding directions, so that the working efficiency is improved; the left-machine and right-machine modes, i.e., the mode in which a single welding robot 3 performs welding work, can be used when the length of a weld is short or one of the welding machines is in a non-operative state.
The dual-computer mode specifically comprises the following steps:
(1) the corrugated plate is placed on the welding rack 1, a worker operates the pressing mechanism 9 to press the workpiece, and the left and right welding robots 3 are in the middle reset position at the moment;
(2) a worker starts the left welding robot 3 and the right welding robot 3, the central control system 4 controls the camera 7 to descend through the P L C controller 5, and controls the anti-splashing protective cover to be opened;
(3) after the welding robot descends, the P L C controller 5 controls the cameras on the left and right welding robots 3 to move, the cameras are moved to respective scanning starting points and extend outwards for a certain distance (the distance is set in advance, so as to ensure that the camera 7 can completely scan the welding seam), the left and right cameras scan from the middle of the welding seam to the two sides, and the cameras on the left and right sides are moved in a staggered manner so as to prevent the cameras on the two sides from colliding;
(4) after the camera arrives, the welding seam is scanned, and the scanning distance is set in advance (determined according to the length of the corrugated plate or the length of the welding seam);
(5) after the scanning is finished, transmitting the scanning information to the central control system 4 for processing, transmitting the coordinate information obtained after the processing to the P L C controller 5, and simultaneously, lifting the camera and closing the anti-splashing protective cover;
(6) the P L C controller 5 controls the welding gun 6 of the welding robot 3 to move according to the first coordinate point (the welding starting point) and the compensation distance (compensation is carried out according to the distance moved in the direction of the welding gun 6X, Y before welding), so that gun alignment is realized;
(7) after the movement is completed, the P L C controller 5 controls the welding gun 6 to descend;
(8) manually detecting whether gun compensation needs to be carried out for the second time, if the gun compensation needs to be carried out, pausing, carrying out X, Y-direction adjustment on the gun through a wireless remote controller, continuing to start after the adjustment is finished, starting welding work, sending the adjustment parameters to the central control system 4 for data compensation and updating for subsequent recycling, and not needing to repeat manual detection; if the gun is accurate, directly starting welding work;
(9) the P L C controller 5 starts a welding power supply, the wire feeder works to feed wires to the welding gun 6, arcing is firstly carried out (the arcing holding time is set in advance), and after the arcing is finished, the P L C controller 5 controls the left welding gun 6 and the right welding gun 6 to start welding from two sides to the middle according to the coordinate information (the welding finishing time of the left welding gun 6 and the welding finishing time of the right welding gun 6 are staggered, so that the left welding gun 6 and the right welding gun are prevented from colliding in the middle);
(10) after welding is finished, moving the welding gun 6 to continue to walk for a certain distance to achieve arc closing (the walking distance is set in advance), then stopping welding, raising the welding gun 6, and returning the welding robot 3 to the middle reset position;
(11) the pressing mechanism 9 is loosened to wait for manual workpiece conveying, and the process is finished to wait for the next cycle;
the welding precision is high, the joint close is compressed between the jointed boards, the welding quality is guaranteed, the working efficiency is greatly improved, and the economic benefit of enterprises is improved.
The left machine and the right machine specifically comprise the following steps:
(1) the corrugated plate is placed on the welding rack 1, a worker operates the pressing mechanism 9 to press the workpiece, and the left and right welding robots 3 are in the middle reset position at the moment;
(2) a worker starts a single welding robot 3, the central control system 4 controls the camera 7 to descend through the P L C controller 5, and controls the anti-splashing protective cover to be opened;
(3) after the welding robot descends, the P L C controller 5 controls the camera on the welding robot 3 to move, and the camera is moved to the scanning starting point and then extends outwards for a certain distance (the distance is set in advance, so as to ensure that the camera 7 can completely scan the welding seam);
(4) after the camera arrives, the welding seam is scanned, and the scanning distance is set in advance (determined according to the length of the corrugated plate or the length of the welding seam);
(5) after the scanning is finished, transmitting the scanning information to the central control system 4 for processing, transmitting the coordinate information obtained after the processing to the P L C controller 5, and simultaneously, lifting the camera and closing the anti-splashing protective cover;
(6) the P L C controller 5 controls the welding gun 6 of the welding robot 3 to move according to the first coordinate point (the welding starting point) and the compensation distance (compensation is carried out according to the distance moved in the direction of the welding gun 6X, Y before welding), so that gun alignment is realized;
(7) after the movement is completed, the P L C controller 5 controls the welding gun 6 to descend;
(8) manually detecting whether gun compensation needs to be carried out for the second time, if the gun compensation needs to be carried out, pausing, carrying out X, Y-direction adjustment on the gun through a wireless remote controller, continuing to start after the adjustment is finished, starting welding work, sending the adjustment parameters to the central control system 4 for data compensation and updating for subsequent recycling, and not needing to repeat manual detection; if the gun is accurate, directly starting welding work;
(9) the P L C controller 5 starts a welding power supply, the wire feeder works to feed wires to the welding gun 6, arcing is firstly carried out (the arcing holding time is set in advance), and after the arcing is finished, the P L C controller 5 controls the welding gun 6 to start welding according to coordinate information;
(10) after welding is finished, moving the welding gun 6 to continue to walk for a certain distance to achieve arc closing (the walking distance is set in advance), then stopping welding, raising the welding gun 6, and returning the welding robot 3 to the middle reset position;
(11) the pressing mechanism 9 is loosened to wait for manual workpiece conveying, and the process is finished to wait for the next cycle.
The weld joint identification method comprises the following steps:
the mobile camera scans the whole welding line, a picture of the welding line is taken every 50mm, the central control system 4 identifies the central point of each section of the welding line through a characteristic line algorithm, the central points are fitted into a complete welding line straight line to obtain corresponding coordinate information, meanwhile, the welding time of each section is set according to the width of each section of the welding line, and information data are transmitted to the P L C controller 5, so that the welding control of the welding gun 6 is realized.

Claims (10)

1. An automatic welding process for welding jointed boards of containers is characterized by comprising the following steps of enabling a pressing mechanism to press a workpiece, enabling the welding robot to be in a middle reset position, starting the welding robot, enabling a central control system to control a camera to descend and move through a P L C controller, enabling the camera to move to a scanning starting point and extend outwards for a certain distance, starting to scan a welding seam after the camera arrives, transmitting scanning information to the central control system for processing, transmitting coordinate information obtained after processing to a P L C controller, retracting the camera, enabling the P L C controller to control a welding gun of the welding robot to move according to a first coordinate point and a compensation distance to achieve gun alignment, starting welding work after gun alignment is completed, enabling a P L C controller to start a welding power supply, enabling a wire feeder to feed wires to the welding gun, carrying out arc starting first, controlling the welding gun to start welding according to the coordinate information after arc starting is completed, enabling the P L C controller to control the welding gun to start welding gun welding according to the coordinate information, moving for continuing to travel for a certain distance after welding is completed, achieving arc withdrawing, then stopping welding, returning to the welding gun to the middle reset position, and waiting.
2. The automatic welding process for the plate welding of the containers as claimed in claim 1, wherein the welding seam identification method comprises moving a camera to scan the whole welding seam, taking a picture of the welding seam every 50mm sample, identifying the central point of each section of the welding seam by a characteristic line algorithm through a central control system, fitting the central points into a complete welding seam straight line to obtain corresponding coordinate information, setting the welding time of each section according to the width of each section of the welding seam, and transmitting the information data to a P L C controller to realize welding gun welding control.
3. The automatic welding process for the plate welding of the container as claimed in claim 1 or 2, wherein:
the dual-computer mode specifically comprises the following steps:
(1) the corrugated plate is placed on the welding rack, a worker operates the pressing mechanism to press the workpiece, and the left welding robot and the right welding robot are in the middle reset position at the moment;
(2) a worker starts the left welding robot and the right welding robot, the central control system controls the camera to descend through the P L C controller, and controls the splash-proof protective cover to be opened;
(3) after the welding robot descends, the P L C controller controls the cameras on the left and right welding robots to move, the cameras are moved to respective scanning starting points and extend outwards for a certain distance, the left and right cameras scan from the middle of the welding seam to two sides, and the cameras on the left and right sides move in a staggered manner;
(4) after the camera arrives, the welding seam is scanned, and the scanning distance is set in advance;
(5) after the scanning is finished, transmitting the scanning information to a central control system for processing, transmitting the coordinate information obtained after the processing to a P L C controller, and simultaneously, lifting a camera and closing the anti-splashing protective cover;
(6) the P L C controller controls the welding gun of the welding robot to move according to the first coordinate point and the compensation distance, so that gun alignment is realized;
(7) after the movement is finished, the P L C controller controls the welding gun to descend;
(8) manually detecting whether gun compensation needs to be carried out for the second time, if the gun compensation needs to be carried out, pausing, carrying out X, Y-direction adjustment on the gun through a wireless remote controller, continuing to start after the adjustment is finished, starting welding work, and sending an adjustment parameter to a central control system for data compensation and updating; if the gun is accurate, directly starting welding work;
(9) the P L C controller starts a welding power supply, the wire feeder works to feed wires to the welding guns, arcing is firstly carried out, and after the arcing is finished, the P L C controller controls the left welding gun and the right welding gun to start welding from two sides to the middle according to coordinate information;
(10) after welding is finished, moving the welding gun to continue to walk for a certain distance to achieve arc closing, then stopping welding, raising the welding gun, and returning the welding robot to the middle reset position;
(11) and (5) loosening the pressing mechanism, waiting for manual workpiece conveying, ending the process, and waiting for the next cycle.
4. The automatic welding process for the plate welding of the container as claimed in claim 1 or 2, wherein:
the left machine and the right machine specifically comprise the following steps:
(1) the corrugated plate is placed on the welding rack, a worker operates the pressing mechanism to press the workpiece, and the welding robot is located at the middle reset position;
(2) a worker starts a single welding robot, the central control system controls the camera to descend through the P L C controller, and controls the anti-splashing protective cover to be opened;
(3) after the descending is finished, the P L C controller controls the camera on the welding robot to move, and the camera is moved to the scanning starting point and then extends outwards for a certain distance;
(4) after the camera arrives, the welding seam is scanned, and the scanning distance is set in advance;
(5) after the scanning is finished, transmitting the scanning information to a central control system for processing, transmitting the coordinate information obtained after the processing to a P L C controller, and simultaneously, lifting a camera and closing the anti-splashing protective cover;
(6) the P L C controller controls the welding gun of the welding robot to move according to the first coordinate point and the compensation distance, so that gun alignment is realized;
(7) after the movement is finished, the P L C controller controls the welding gun to descend;
(8) manually detecting whether gun compensation needs to be carried out for the second time, if the gun compensation needs to be carried out, pausing, carrying out X, Y-direction adjustment on the gun through a wireless remote controller, continuing to start after the adjustment is finished, starting welding work, and sending an adjustment parameter to a central control system for data compensation and updating; if the gun is accurate, directly starting welding work;
(9) the P L C controller starts a welding power supply, the wire feeder works to feed wires to the welding gun, the arc striking is firstly carried out, and after the arc striking is finished, the P L C controller controls the welding gun to start welding according to the coordinate information;
(10) after welding is finished, moving the welding gun to continue to walk for a certain distance to achieve arc closing, then stopping welding, raising the welding gun, and returning the welding robot to the middle reset position;
(11) and (5) loosening the pressing mechanism, waiting for manual workpiece conveying, ending the process, and waiting for the next cycle.
5. The automatic welding process for welding the panels of the container as claimed in claim 1 or 2, wherein the automatic welding process comprises a welding rack, a beam is arranged on the welding rack, two welding robots are arranged on the beam, the welding robots can move on the beam, the moving direction of the welding robots is consistent with the welding direction of the welding seams of the panels, the central control system controls the welding robots to move through a P L C controller, welding guns and cameras are arranged on the welding robots, a P L C controller is connected with a welding power supply, the welding power supply is connected with a wire feeder, power is supplied to the wire feeder, the wire feeder is connected with the welding guns, the cameras are in transmission connection with the central control system, the cameras are used for photographing and scanning, scanned information is transmitted to the central control system for processing and operation welding seam recognition, the central control system transmits the processed information to the P L C controller, and the P L C controller controls the welding robots to move, so that the.
6. The automatic welding process for the plate welding of the container as claimed in claim 5, wherein: welding robot adopts the triaxial welding robot of rectangular coordinate system, include X, Y, Z, the X direction be with makeup welding seam welding unanimous direction, the Y direction be with makeup welding seam vertically direction, the Z direction is direction of height.
7. The automatic welding process for the plate welding of the container as claimed in claim 5, wherein: the welding machine frame is provided with a plurality of limit switch mechanisms, and each limit switch mechanism comprises a left end limit, a left middle limit, an anti-collision limit, a right middle limit and a right end limit; the left end limit and the left middle limit are used for limiting the movement of the left welding robot in the X-axis direction; the right middle limit and the right end limit are used for limiting the movement of the right welding robot in the X-axis direction; the anti-collision limit is used for preventing the left and right welding robots from colliding.
8. The automatic welding process for the plate welding of the container as claimed in claim 5, wherein: the welding machine frame is provided with a pressing mechanism, the pressing mechanism is used for pressing corrugated plates to be welded, and the pressing mechanism is driven by an air cylinder; the camera is provided with an anti-splashing protective cover which is driven by an air cylinder.
9. The automatic welding process for the plate welding of the container as claimed in claim 5, wherein: supporting clear rifle ware and the wireless remote controller of being provided with, wireless remote controller and central control system wireless connection, wireless remote controller can carry out X, Y, Z three direction's mobility control to welding robot, has realized fast to the rifle.
10. The automatic welding process for the plate welding of the container as claimed in claim 5, wherein: the camera adopts 30 ten thousand pixel black and white industrial camera Basler acA640-120gm GigE, and is equipped with Sony ICX618 CCD photosensitive chip, 120 frames of image per second and VGA resolution.
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