KR100313481B1 - Automatic submerged arc welding system with five welding torches - Google Patents

Abstract

The present invention relates to a submerged arc 5 electrode automatic welding device, the object of which is to configure the number of electrodes to 5 electrodes to improve the performance of the welding equipment, it is possible to automatically perform all the slag welding work from the welding head setting It is to provide a submerged arc 5 electrode automatic welding device.

The present invention is a submerged arc automatic welding device, the automatic welding device is a conveyance and rotation of the welding member, and the welding bogie portion for fixing both ends of the welding member, and five electrodes are transferred by the welding bogie portion A welding head portion for welding the work, a flux spreading portion connected to the welding head portion to spread the flux to the welding head portion, a flux supply / recovery portion for supplying the flux to the flux spreading portion and recovering the spread flux; A wire feeding part for feeding wires to the welding head part, a slag automatic crushing / recovering part attached to the rear part of the welding head part based on the welding progress direction, and crushing and removing the slag generated by welding; It is configured to include a main control unit for controlling the welding head, flux spraying unit, flux supply / recovery unit, wire feed unit, slag automatic crushing / recovery unit, From contact with the head set it is a submerged arc electrode 5, an automatic welding apparatus for carrying out fully automatically all the welding operation to remove the slag to provide.

Description

Automatic submerged arc welding system with five welding torches}

The present invention relates to an automatic welding apparatus for a submerged arc 5 electrode, wherein the number of electrodes of the welding head portion of the submerged arc welding apparatus is composed of multi-electrodes (five electrodes) to maintain the stability and uniformity of arc stability, quality, The welding work from welding head setting to slag removal can be performed unattended automatically between PLC and PLC and computer by mutual communication, and submerged arc welding is possible by one touch of operator (0NE TOUCH). It relates to a merged arc 5-electrode automatic welding device.

In general, welding techniques used in industrial sites are classified into fusion welding, pressure welding, and solder welding. When the welding method which is most widely used in shipbuilding or steel structure manufacturing process is subdivided, it is classified into consumables in which the electrodes are consumed and non-consumables in which the electrodes are not consumed. In addition, such consumable welding methods include shield metal arc welding, gas metal arc welding, and submerged arc welding.

The submerged arc welding is a method of welding two or more objects to be joined by heat generated by generating an arc between the wire and the base material under the granular flux. Weld continuously and supply. At this time, the arc is covered by the flux and is not visible from the outside, and the flux blocks the atmosphere to protect during the refining of the weld metal and contributes to the formation of weld beads or slag. Submerged arc welding is deeply welded due to the size and current of the electrodes used, and is widely used as a high efficiency joining technique for thick plate structural steel. Looking at these applications, it is used in shipbuilding, steel pipe manufacturing, and general steel construction. It is a representative high efficiency welding method that is widely used for joints, fillet joints, and paste welding.

Conventionally used submerged arc welding uses a one-electrode, two-electrode, or three-electrode method, and when the electrode configuration is two-electrode, DC + AC or AC + AC In the case of three-electrode, DC + AC + AC or AC + AC + AC are adopted. For inner surface welding of small diameter pipes, one electrode or two electrode method is used for welding the outer surface of the pipe due to the characteristics of the working space. The 1 electrode, 2 electrode, and 3 electrode systems were used for this.

This welding technique generally performs higher currents and highways than the most widely used gas metal arc welding process. Therefore, the current or welding speed, that is, welding speed (welding efficiency), is several to tens of times. It is a technique that can improve the deformation and quality of welding by reducing the number of welding passes, especially in thick plate welding.

However, when welding the outer surface of a pipe, the number of electrodes used in submerged arc welding generally stays at 1, 2, 3, electrode level is a high efficiency welding technique, and the current and speed of use are high current and high speed. Because of the limitations of the complex welding technology in terms of arc stability, welding workability, quality of welding material, properties of the weld (mechanical properties) or welding automation, there are difficulties in system construction.

In addition, the conventional submerged automatic welding device used when welding the outer surface of the pipe is to automatically track the welding line tracking by applying the sensor, but the welding conditions are responded by manual adjustment according to the operator's judgment during welding, and the slag is also manual. Because it needs to be dealt with, it takes a lot of work time, resulting in a number of problems, such as a decrease in work efficiency.

The present invention has been made in consideration of the above problems, the object of which is to configure the number of electrodes to 5 electrodes to improve the performance of the welding equipment, from the setting of the welding head submerged to automatically perform all the slag welding work It is to provide a de-arc 5 electrode automatic welding device.

The present invention is a submerged arc automatic welding device, the automatic welding device is a conveyance and rotation of the welding member, and the welding bogie portion for fixing both ends of the welding member, and five electrodes are transferred by the welding bogie portion A welding head portion for welding the work, a flux spreading portion connected to the welding head portion to spread the flux to the welding head portion, a flux supply / recovery portion for supplying the flux to the flux spreading portion and recovering the spread flux; A wire feeding part for feeding wires to the welding head part, a slag automatic crushing / recovering part attached to the rear part of the welding head part based on the welding progress direction, and crushing and removing the slag generated by welding; It is configured to include a main control unit for controlling the welding head, flux spraying unit, flux supply / recovery unit, wire feed unit, slag automatic crushing / recovery unit, From contact with the head set it is a submerged arc electrode 5, an automatic welding apparatus for carrying out fully automatically all the welding operation to remove the slag to provide.

Figure 1 is an illustration of a submerged arc five-electrode automatic welding device showing the configuration according to the present invention

Figure 2 is an exemplary view of the weld bogie showing the configuration according to the invention

Figure 3 is an illustration of the welding ground (EARTH) according to the present invention

Figure 4 is an exemplary view showing the X-Y slide and the welding head portion showing the configuration according to the present invention

5 is an exemplary view of a flux spreader according to the present invention

Figure 6 is an exemplary view of the flux automatic supply / recovery unit of the present invention

7 is an exemplary view of the welding slag automatic fracture of the present invention

8 is an exemplary view of the welding slag automatic recovery portion of the present invention

9 is an exemplary view of a wire feeder for large-capacity submerged arc welding of the present invention

10 is a block diagram showing the configuration of the automatic welding amount automatic control system for the weld area improved cross-sectional change according to the present invention

11 is an exemplary block diagram showing an overall configuration according to the present invention.

* Explanation of symbols for the main parts of the drawings

(10): welding bogie (11): rail

(12): body portion (13): support fixing portion

(14): upper rail (15): support moving part

(16): roller portion (17): welding ground portion

(20): welding head portion (21): member detection sensor

(22): camera (23): laser vision sensor

24: welding electrode 25: X-Y slide

(30): flux sprayer 31: main spray hose

(32,43`): air cylinder 33: main gate

(34): flux supply detection sensor (35): auxiliary spray hose

36: auxiliary gate 37: flux dam

40: flux supply / recovery section 41: flux inlet

(42): flux storage tank (43): flux recovery mouse

(44): 1st separator (44`): 2nd separator

(45): powder removal device (46): dust storage hopper

(47,47`, 47 ″): Dust Storage Tank (48): Dust Collector

(49): turbo blower (50): wire feeder

(51): welding wire (52): wire reel

53: shaft 54: wire reel support

(55): support 56: reel brake

(57): wire remaining detector (60): automatic slag crushing / recovery unit

61: automatic slag crushing unit 62: slag recovery unit

70: main control unit 80: welding member

90: Platform 100: Real Groove

(171): hydraulic cylinder (172): flexible link

200: standard groove area 241: first electrode

(242): second electrode (243): third electrode

244: fourth electrode 245: fifth electrode

(300): measuring groove area (400): welding control unit

500: comparator 561: air cylinder

(562): vertical rod (563): horizontal rod

(564): pad (PAD) (565): brake case

(566): spring 571: base frame

(572): hinge portion (573): air cylinder

574: sensor 611: vertical boom

612: Guide Rail 613: Moving Plate

614: feed motor 615: chipping hammer regulator

(616): chipping hammer (617): guide roller

(618): member detection sensor (621): support

(622): slag recovery mouse (623): recovery pipe

(624): Separator (625,628): Dust Box

626: dust collector 627: turbo blower

(629): through hole (6151): tilt adjuster

(6152): positioner

The automatic welding device is a device that automatically performs a series of welding processes with a single switch operation. The basic process of submerged arc welding is to focus the continuous consumption electrode on the improvement center and to spread the flux appropriately. While generating the arc in the order of the corresponding number of electrodes, the welding is performed while moving the member or electrode. At this time, the welding rod should perform welding while directing the center of improvement (welding line tracking) until the end of welding. Current, voltage, welding speed) need to be matched appropriately.

Figure 1 shows an exemplary view of a submerged arc 5 electrode automatic welding device showing the configuration according to the present invention, the present invention is a welding bogie 10 for transferring a welding member and the welding bogie 10 A welding head portion 20 for welding the welding member transferred by the five welding electrodes, a flux spreading portion 30 connected to and installed in the welding head portion 20, and the flux spreading portion 30. A flux supply / recovery unit 40 for supplying flux and recovering the spread flux, a wire supply unit 50 for supplying a wire to the welding head unit 20, and a welding head unit based on a welding progress direction ( Slag automatic crushing / recovering unit 60 attached to the rear of the 20, the welding bogie 10, the welding head 20, the flux spraying unit 30, the flux supply / recovery unit 40, the wire The main control part 70 which controls the supply part 50 and the slag automatic crushing / recovery part 60 is comprised.

The welding bogie 10 is to transfer the welding member 80 to the welding position, the welding bogie body portion 12 is moved along the rail 11 installed on the bottom surface as shown in Figure 2, and It is fixed and installed on the upper body portion 12 to support one side of the welding member 80, and is installed to move along the upper rail 14 of the welding bogie body portion 12 and welded It is connected and installed at each of the support moving part 15 supporting another side of the member 80, and the support fixing part 13 and the support moving part 15, respectively, to rotate the circular welding member by a motor. It is comprised by the roller part 16. As shown in FIG.

Above the bearing moving part 15 and the supporting fixing part 13, a welding ground part 17 is installed, in which both ends of the flexible link 172 are lifted by the hydraulic cylinders 171, as shown in FIG. It is. That is, the flexible link is a flexible link 172 on the surface of the welding member 80 by the rising end of the flexible link 172 connected to each of the hydraulic cylinder 171 by the lifting operation of the hydraulic cylinder, the flexible link 172 to the welding member 80 Since it wraps and contacts, the ground area of the flexible link 172 and the welding member 80 is increased when the circular welding member 80 is welded, thereby preventing movement and fluctuation of the welding member 80. That is, since the current carrying capacity with respect to the welder output current is also an important factor in maintaining a stable welding condition in welding, the welding ground part 17 is configured to ensure sufficient current carrying capacity at all times in response to a change in the welding member, that is, the pipe diameter. It is.

The welding head 20 welds a member, and as shown in FIG. 4, a member detection sensor 21 for detecting a member based on a welding progress direction, grasps a welding line and a welding state, and detects a member and a welding electrode. The camera 22 for adjusting the spacing, the laser vision sensor 23, and five welding electrodes 24 for welding the members are provided in the XY slide 25 in sequence. The five welding electrodes 24 are provided on the X-Y slide 25 so that the distance between the electrodes, the longitudinal angle of the electrode rod, the horizontal angle, and the like can be adjusted.

The flux spreading unit 30 is to prevent an open arc, the main spray hose 31 is connected to the flux supply / recovery unit 40 as shown in Figure 5, the main spray The amount of flux installed and sprayed on one side of the main spray hose 31 to be positioned below the main gate 33 and the main gate 33 installed on the hose 31 and automatically operated by the air cylinder 32 is determined. Flux supply detection sensor 34 to detect, an auxiliary spray hose 35, one side of which is connected to the main spray hose 31 to be located below the flux supply detection sensor 34, and one side of the auxiliary spray hose 35 And a flux dam 37 to which flux is supplied by the main spray hose 31 and the auxiliary spray hose 35. Flux supplied into the flux dam 37 is accumulated in the flux dam 37 without flowing down by the flux dam 37 having a predetermined height, that is, a part far from the part connected to the main spray hose 31. In order to prevent the shortage of flux spreading at the site where the 3,4,5 electrodes 243,244,245 are located, an auxiliary spray hose 35 for spraying the flux to the site where the 3,4,5 electrodes 243,244,245 are located is connected. .

The welding electrode 24 is installed to be located in the flux dam 37 into which the flux is introduced, as shown in FIGS. 4 and 5, and is isolated from the external air by the flux accumulated in the flux dam 37. In the arc welding operation, the generation of oxide is prevented.

The flux supply / recovery unit 40 supplies flux to the flux spreader 30 and recovers the flux sprayed by the flux spreader 30 after welding, as illustrated in FIG. 6, the flux inlet 41. Flux flows into the main spray hose 31 of the flux spreading part 30 through the flux storage tank 42 by its own weight, and the flux remaining on the weld bead after welding is recovered by the flux suction mouse. Passing through the 43 to the primary separator 44, the flux is introduced into the flux storage tank 42 after the impurities are removed by the fine iron removal device 45 is reused, and at the same time, the primary separator 44 And dust through the iron removal device 45 is collected into the dust storage tank 47 through the dust storage hopper 46. The flux recovery mouse 43 is connected to the XY slide 25 so as to be located at the rear side of the welding direction, that is, at the rear of the flux dam 37, and is separated by the primary separator 44. Dust is conveyed to the secondary separator 44`, collected to another dust storage tank 47` through the secondary separator 44`, and the dust conveyed to the secondary separator 44` is a dust collector ( 48 is collected by the dust storage tank 47 ″. At this time, the flux recovery mouse 43 is rotated about the portion connected to the X-Y slide 25 by the air cylinder 43` to be close to the upper portion of the welding member.

That is, the flux supply / recovery unit 40 sprays the flux stored in the flux storage tank 42 through the main spray hose 31 of the flux spreader 30 by its own weight, and then welds the welded site. The flux remaining on the beads is recovered by vacuum adsorption by a turbo blower (49) to be reused, and the fine dust in the flux is filtered through a filter, and after recovery, the dust attached to the filter is shaken off for an appropriate time. As a device, it is configured to enable automatic operation in conjunction with the flux spreading function, and the impurities (slag and powdered iron) contained in the flux recovered by the built-in automatic powder removing device 45 are automatically separated during operation to It can improve the purity and stabilize the welding quality.

The welding slag automatic crushing / recovery unit 60 is to remove the slag remaining after welding, as shown in Figure 7 and 8 the automatic slag crushing unit 61 is installed on the vertical boom 611 Transfer motor 614 for moving the moving plate 613 up and down along the guide rail 612 installed on one side of the vertical boom 611, and left and right chipping is installed on one side lower surface of the moving plate 613 A hammer controller 615, a left and right chipping hammer 616 connected and installed respectively to the left and right chipping hammer controller 615, and the left and right chipping hammer controller 615 are connected and installed to a predetermined depth The guide roller 617 for alleviating the impact applied to the welding bead and the member detection sensor 618 is provided on the lower surface of the movable plate 613, the slag recovery unit 62 is the support 621 Slide to be connected to and installed on one side of the movable plate 613 The separator 624 connected by the lag recovery mouse 622, the slag recovery mouse 622 and the recovery pipe 623, the dust box 625 which is provided to be located below the separator 624, and the separator ( 624, a dust collector 626 connected to the upper portion, a turbo blower 627 connected to the dust collector 626, and another dust box 628 installed to be located below the dust collector 626. It consists of). The chipping hammer controller 615 of the slag automatic crushing unit is a position for adjusting the left and right positions of the tilt adjuster 6161 and the chipping hammer 616 to adjust the angle of the chipping hammer 616 to 30 ~ 60 ° with respect to the welding line The regulator 6162 is comprised. In addition, the upper surface of the slag recovery mouse 622 is formed with a through hole 629 into which the ends of the left and right chipping hammers 616 are inserted, and the chipping hammer 616 is formed in the slag recovery mouse 622. The slag is intended to be crushed, and the crushed slag is transferred to the separator 624 through the recovery mouse 622 and the recovery pipe 623 by vacuum suction by the turbo blower 627.

That is, when the welding slag automatic crushing / recovery unit 60 enters the welded member after welding, the welding slag is automatically detected by the member detection sensor 618 installed on the lower surface of the movable plate 613. The moving plate 613 is lowered along the guide rail 612 by the up / down feed motor 614, and the slag is crushed in the recovery mouse 622 by the operation of the slag removal chipping hammer 616. The crushed slag is transferred to the separator 624 by the turbo blower 627 through a recovery mouse 622 and a recovery pipe 623 connected and installed at one side of the recovery mouse. The dust and slag transported to the separator 624 are sucked into the dust collector 626 through a hose installed on the upper part by centrifugal force and the slag is stored in the dust box 625 installed under the separator 624, and the dust The dust transferred to the dust collector 626 is stored in the dust box 628 installed below the dust collector 626. The slag and dust sucked and stored in the dust boxes 625 and 628 are provided to the operator to process the information when the amount of the slag and dust exceeds a predetermined amount.

The wire supply unit 50 is to stably feed the welding wire 51 during welding, as shown in Figure 9, the wire reel 52 is wound around the wire 51, and the wire reel 52 A wire reel support 54 rotatably installed by the shaft 53 and a reel brake connected to and installed by a support 55 on one side of the wire reel support 54 to prevent overrun of the wire 51 ( 56, a wire remaining detector 57 connected to the lower portion of the wire reel support 54 to detect a residual amount of the wire, and a wire 51 wound around the wire reel 52 to the welding head portion 20. It is composed of a wire feeding motor (not shown) for feeding to the furnace.

The reel brake 56 prevents the wire reel from being instantaneously rotated or stopped due to the rotational operation of the large-capacity wire reel, that is, the inertia during instant feeding and stopping of the wire. An air cylinder 561 connected and installed by a support 55, a vertical rod 562 vertically operated by the air cylinder 561, and having a sliding inclined surface at an end thereof, and the vertical rod 562. It is horizontally operated by the horizontal rod 563, the sliding inclined surface in contact with the sliding inclined surface of the vertical rod 562 at one end, and the sliding inclined surface of the horizontal rod 563 is attached to the other end is not formed, horizontal Urethane pad 564 contacting one side of the wire reel 52 by the horizontal operation of the rod 563, the brake case 565 to operate the vertical / horizontal rod, the horizontal rod 563 and the bra It is composed of a spring 566 is installed between the case 565, the wire supply motor (not shown) and the air cylinder 561 is interlocked in accordance with the signal of the wire feeder controller at the start or end of welding Overrun or backrun operation due to inertia of the reel is prevented.

The wire residual detector 57 detects the amount of the wire 51 wound on the wire reel 52, and connects and installs the lower surface of the wire reel support 54 to the base frame 571 so as to be rotatable. Two hinge parts 572 and the lower part of the wire reel support 54 without the hinge part 572 are installed on the base frame 571 so as to contact the wire 51 and the wire reel 52. An air cylinder 573 supporting the weight of the air, a sensor 574 installed on one side of the air cylinder 573 to detect a position of the air cylinder 573, and a wire by detecting the sensor 574. It is composed of a comparison unit (not shown) for measuring the residual amount and comparing it with the set value, and when the residual amount of the wire is smaller than the preset value, it is to send a warning message to the welder. That is, when the wire 51 wound around the wire reel 52 is gradually consumed, and the remaining amount of the wire becomes less than the amount capable of welding one welded object without interruption, the piston of the air cylinder holding the wire and the wire reel is supported. The sensor 574 measures the piston lift degree of the air cylinder 573 that is raised and moved, and the residual amount of the wire is detected by the measurement of the sensor 574, and the The residual amount is compared with the amount of wire set in advance (amount of wire consumed in one welding), and when the wire remaining amount is smaller than the set amount of wire, a warning message is sent to the welder.

That is, the wire supply unit 50 is to rotate the wire reel properly and stably as the rotational speed of the wire supply motor is changed in accordance with the welding conditions, it can detect the weight of the wire wound on the wire reel (52) When the air cylinder 573 and the sensor 574 are combined and installed so that the remaining wire amount is at least one welding quantity or less, the welder is alerted by the detection of the sensor 574 so that the operator can make a new welding at the appropriate time. It can be replaced with wire.

In addition, the present invention is to operate the welding machine and various peripheral devices for performing the welding, the platform 90 is installed to observe the welding state, the platform to operate and monitor the laser vision control and operation panel for the overall welding device It is supposed to be.

10 is a block diagram showing the configuration of the automatic welding amount automatic control system for the welded section improved cross-sectional area change according to the present invention, the present invention sets the standard weld amount (standard groove area) for the standard groove before welding operation In addition, the area of the actual groove 100 is measured by the camera 22 and the laser vision sensor 23 installed in the welding head 20, and then the preset standard groove area 200 and the measured area of the groove are actually measured. Comparing the 300 from the comparator 500, the correction control signal (the value obtained by adding the difference between the current / voltage and the standard welding current / voltage value currently measured to the standard welding current / voltage) is input to the welding controller 400. The welding control unit 400 inputting the correction signal controls the welding amount by adjusting the welding current and the voltage of the welding head unit 20. At this time, the welding current, the voltage and the wire feeding speed measured by the welding head 20 are input to the comparator 500 again to select the actual welding current and the voltage, and are corrected. That is, the groove area 300 and the preset standard groove area 200 measured by the camera 22 and the laser vision sensor 23 are compared with each other in the comparator 500, and when the groove area is different, the standard The welding amount is automatically adjusted by increasing or decreasing the current / voltage under welding conditions, so that the arc stability is maintained by the torch control value and the optimum welding amount is automatically controlled.

That is, the present invention detects the improvement shape by the laser vision sensor 23, finds the center of improvement, and operates the XY slide 25 so that the electrode is always positioned at the center of the improvement (welding line tracking), and the improvement area is improved. It automatically adjusts the welding conditions appropriately to compensate for the difference from the reference area by calculating, and detects the actual welding condition during welding and compares with the set welding condition, and always outputs the desired welding condition (welding condition feedback control It is designed to maintain uniform and stable welding quality.

In addition, 2500 welding conditions can be saved and modified according to the member specifications, and the output function can be easily used by the user, and it is configured to enable automatic sequence control of a series of welding processes in connection with a PLC control system.

As shown in FIG. 11, the main controller 70 of the present invention is a PLC-to-PLC communication unit, various signal conversion devices, a computer communication unit, and various interface devices to enable manual control, semi-automatic control, and automatic control of the welding machine and various peripheral devices. It is composed of operation panel, monitoring device, and laser vision system so that the operator can select the operation mode according to the situation.

In the present invention configured as described above, during the welding operation, the member is transferred until the intermediate portion of the member length reaches the laser vision sensor position by the bogie, and the transferred member is rotated or moved left and right by the roller part of the weld bogie. The laser vision sensor detects a member to be rotated or moved left and right and sets the member to an appropriate welding position. As such, when the member is set at the welding proper position, the welding ground portion of the welding trolley operates to restrain the member, and the member is set to the welding starting position by the welding trolley. When the member is set to the welding start position, the member detection sensor of the welding head unit detects the member, and the welding head unit descends until the flux dam is in close contact with the member surface by the camera and the laser vision sensor. By this, 1 to 5 electrodes are set at the center of improvement of the member. In this way, when the welding head is set to improve the member, the member specification receiving and welding conditions are automatically set in the control unit, and the flux automatic spraying main gate is turned on to flux to the flux dam through the main spraying hose and the auxiliary spraying hose. Is sprayed, and the welding cart is moved, and at the same time, five electrodes generate arcs in order to weld the members. At this time, the welding line is automatically tracked by the laser vision sensor and the camera, and the amount of change in the improvement size is automatically detected and the current / voltage is automatically adjusted according to the comparison between the standard groove area and the actual groove area. It provides the optimum welding amount during welding and is adaptively controlled to the optimum welding condition according to the change of groove cross-sectional area.

After welding, the flux remaining on the welding bead is vacuum-absorbed to the flux recovery part by a recovery mouse installed at the rear of the welding head based on the welding direction, separated from the dust, and reused. The crushed slag is sucked and transported to the slag recovery unit by a turbo blower to the slag recovery unit through a recovery pipe connected to and installed on one side of the recovery mouse, and separated from the dust by centrifugal force. Slag is stored in a dust box.

In the welding operation as described above, all operations are sequentially performed by the member end detection signal, and the end operation is automatically performed.

As described above, in the present invention, all welding operations from welding head setting to slag removal are performed automatically, so that it can be unmanned, and submerged arc welding is possible by one touch of the operator. The welding performance was improved while maximizing the quality and stabilizing the quality.

In addition, it can be applied to various steel structure manufacturing plants that can automatically weld one or two welds generated at the time of processing a circular or square pipe shape at high speed and high efficiency.

Claims (6)

In the submerged arc automatic welding device comprising a welding bogie unit for conveying and rotating a welding member and fixing both ends of the welding member, a welding head portion for welding a workpiece using electrodes, and various sensors, A welding trolley body portion which is moved along the rail provided on the bottom of the welding trolley, a support fixing part which is fixed and installed on the upper portion of the body to support one side of the welding member, and moves along the upper rail of the welding trolley body portion; A welding trolley configured to include a support moving part installed so as to support another side of the welding member, and a roller part connected and installed at one side of the support fixing part and the supporting moving part to rotate a circular welding member by a motor. Wow, A member detection sensor for detecting a member of the welding head part, a camera and a laser vision sensor installed at a rear portion of the member detection sensor to adjust a welding line / welding state and a gap between the member and the welding electrode, and the camera and laser vision sensor A welding head portion including five welding electrodes arranged in a straight line so as to be located at a rear portion, an XY slide for moving the member detection sensor, a camera, a laser vision sensor, and a welding electrode; A flux spreader which is connected to and installed in the weld head to spray flux onto the weld head; A flux supply / recovery unit for supplying flux to the flux spreader and recovering the spread flux; A wire feeder for feeding wires to the welding head, Automatic slag crushing / recovery unit attached to the rear part of the welding head based on the welding progress direction to crush and adsorb and remove slag generated by welding; And a control unit for controlling the welding bogie unit, welding head unit, flux spreading unit, flux supply / recovery unit, wire feed unit, and slag automatic crushing / recovery unit, Submerged arc 5 electrode automatic welding device, characterized in that all the welding work from the welding head setting to slag removal is performed automatically. The method of claim 1; The welding ground for fixing the welding member by contacting the flexible link to the upper end of the flexible moving portion by the respective hydraulic cylinders on the bearing moving part and the supporting fixing part and to surround the surface of the welding member by the both ends of the flexible link being raised. Submerged arc five-electrode automatic welding device characterized in that the installation further. The method of claim 1; The flux sprayer is sprayed by being installed on one side of the main spray hose which is connected to the flux supply unit, the main gate installed in the main spray hose and automatically operated by an air cylinder, and located on one side of the main spray hose to be located below the main gate. A flux supply detecting sensor for detecting the amount of flux, an auxiliary spraying hose having one side connected to a main spraying hose so as to be located below the flux supply detecting sensor, an auxiliary gate provided at one side of the auxiliary spraying hose, and the main spraying hose And a flux dam supplied with flux by an auxiliary spray hose. The method of claim 1; The flux supply / recovery section transfers the flux introduced into the flux inlet to the main spray hose of the flux spreader through the flux storage tank by its own weight, and the flux remaining on the weld bead after welding is located at the rear of the flux dam by vacuum adsorption. The flux is introduced into the primary separator through the flux recovery mouse connected to the XY slide, and the flux is introduced into the service tank after the impurities are removed by the iron removal device, and reused, and via the primary separator and the iron removal device. One dust is collected into the dust storage tank through the dust storage hopper, and the dust separated by the primary separator is collected into the dust storage tank through the secondary separator, and the dust transferred to the secondary separator is stored by the dust collector. Submerged arc 5-electrode automatic welding characterized in that the tank is collected Chi. The method of claim 1; The wire supply unit is connected to and installed by a wire reel on which the wire is wound, the wire reel support on which the wire reel is rotatable by the shaft, and a support on one side of the wire reel support to control the reel of the wire reel. Submerged arc 5 electrode automatic welding, comprising: a brake, a wire residual detector connected to the wire reel support for detecting a residual amount of wire, and a wire feeding motor for transferring the wire wound on the wire reel to the welding head; Device. The method of claim 1; The slag automatic crushing / recovery unit is installed in the upper vertical boom and the transfer motor for moving the moving plate up and down along the guide rail, the left and right chipping hammer regulator is installed on the lower side of the moving plate, the left and right Left and right chipping hammers connected and installed respectively to the chipping hammer controller, a guide roller installed between the left and right chipping hammer regulator and the left and right chipping hammer, and a member detection sensor installed on the bottom surface of the movable plate. Slag crushing part to do, The slag recovery mouse connected to and installed in the middle of one side of the movable plate by the support, the separator connected by the slag recovery mouse and the recovery pipe, the dust box installed to be located below the separator, and the upper part of the separator And a slag recovery unit including a dust collector, a turbo blower connected to the dust collector, and a dust box installed below the dust collector.