KR20240018751A - Welding device that recognizes the welding line and can transfer and weld automatically - Google Patents

Abstract

The present invention relates to a welding device that recognizes a welding line and is capable of automatically transporting and tack welding. A stand is provided at one end and the other end to be mounted and fixed on one side and the other outer surface of the base material, so that the welding line is parallel to the welding line formed on the base material. A transfer rail is mounted, a transfer table is formed so as to be transported along the transfer rail and can measure the transfer distance and gap for tack welding, and is formed on the upper part of the transfer table to detect the position of the welding line. It is located in a position control table that is variable in the front or rear direction of the transfer table by a drive unit, and a first mounting hole formed on one side of the front side of the position control table to spray inert gas on the welding line and between the tungsten electrode and the base material. A torch that generates an arc to weld the base material, and a feeder located in a second mounting hole formed on the other front side of the position control table to tack-weld the base metal by supplying filler metal to the arc generated by the torch. do.

Description

Welding device that recognizes the welding line and can transfer and weld automatically}

The present invention relates to a welding device that recognizes a welding line and is capable of automatically transporting and tack welding. More specifically, it relates to a welding line that performs tack welding while transporting the base material along the welding line before welding the base material so that the base metal is temporarily joined. It relates to a welding device that recognizes and allows automatic transfer and tack welding.

In general, liquefied natural gas (LNG) is liquefied natural gas, which is one of the fossil fuels. Depending on the installation location, liquefied natural gas storage tanks are either land-type storage tanks installed on the ground or buried in the ground, or It is divided into mobile storage tanks installed in transportation vehicles such as cars and ships.

The liquefied natural gas described above has a risk of explosion when exposed to impact and is stored at extremely low temperatures, so the storage tank storing it has a structure that firmly maintains impact resistance and liquid tightness.

Compared to land-type storage tanks with little flow, such storage tanks are somewhat different in that the structure of liquefied natural gas storage tanks installed on cars and ships with flow requires preparation for mechanical stress caused by flow. There is.

However, since the liquefied natural gas storage tank installed on a ship with precautions against mechanical stress can naturally be used as a land-type storage tank, the structure of the liquefied natural gas storage tank installed on a ship will be explained as an example.

LNG tanks, such as cargo tanks on LNG ships, are equipped with an insulation system to insulate the interior and a sealing wall to prevent LNG leakage in order to transport or store low-temperature LNG.

This sealing wall reduces the durability when the LNG stored inside leaks to the outside and comes into contact with the hull, which not only reduces the safety of the ship but also poses a risk of explosion, making sealing of LNG an important task in the safety of the ship. .

To install the sealing wall described above, a conventional LNG ship installs a scaffolding device disposed close to the inner wall for installation of the internal sealing wall, and an operator uses the scaffolding device to install the sealing wall inside.

However, conventionally, in order to seal the inside of the sealing wall, the worker must carry the welder directly and move the scaffolding device to perform the welding work, which is inconvenient, and the welding efficiency is low because the worker must perform the welding work himself. In addition, there is a problem that there is a difference in welding quality depending on the worker's skill or condition.

Therefore, since such internal welding work is mainly performed by skilled workers, the manufacturing cost increases.

In addition, since such internal welding work is performed from low to high floors, workers must pay attention to safety while performing welding work, so they are easily distracted and the risk of safety accidents is high.

In addition, in the conventional case, the primary barrier of an LNG tank is welded by connecting large plates of 3m*1m made of SUS material, and they must be temporarily connected through tack welding before welding. This tack welding is very difficult depending on the size of the tank. There was a problem that a lot of work had to be performed, and workers had to move around the snow at regular intervals to perform tack welding, which required a lot of concentration and time for tack welding.

Korean Patent Registration No. 10-0607338

The purpose of the present invention to solve the above problems is to recognize the weld line between two base materials and tack weld while moving horizontally along the weld line to temporarily join the base materials, and automatically transfer and The purpose is to provide a welding device capable of tack welding.

In addition, another object of the present invention is to automatically perform tack welding at regular intervals by measuring the distance to be transferred, and to recognize welding lines that can perform tack welding by automatically adjusting the height depending on the welding position, so that automatic transfer and tack welding are possible. The purpose is to provide welding equipment.

Another object of the present invention is to provide a welding device that can automatically transfer and tack weld by recognizing a welding line that can increase the reliability of the tack welding area and minimize the occurrence of repair by supplying power for a short moment at the tack welding position.

The welding device of the present invention, which recognizes the welding line of the present invention to solve the above problems and is capable of automatically transferring and tack welding, is provided with a stand at one end and the other end to be mounted and fixed on one side and the other outer surface of the base material, so that the welding line formed on the base material is provided. A transfer rail that is mounted in parallel, a transfer table that is formed to be transported along the transfer rail and is formed to measure the transfer distance and gap for tack welding, and a position of the welding line formed on the upper part of the transfer table. Detects a position control table that is variable in the front or rear direction of the transfer table by a drive unit, and is located in a first mounting hole formed on one side of the front side of the position control table to inject an inert gas to the welding line and tungsten electrode and the A torch that generates an arc between base materials to weld the base materials, and a feeder located in a second mounting hole formed on the other front side of the position control table to tack-weld the base materials by supplying filler metal to the arc generated by the torch. It is characterized by

In addition, the welding device capable of automatically transferring and tack welding by recognizing the welding line of the present invention includes a transfer block formed in the lower center of the transfer table and coupled to and sliding on the upper part of the transfer rail, and formed on the lower rear of the transfer table and the A transfer wheel is formed to contact the upper part of the base material and is rotated by a transfer motor to transfer the transfer block along the transfer rail, and a laser is formed on one side of the lower part of the transfer table and is directed toward the holder formed at one end of the transfer rail. A distance sensor that measures the distance between the transfer table and the holder by examining the distance sensor, and a plurality of position detection spheres formed on one side of the lower part of the transfer table and formed at regular intervals on the upper part of the transfer rail are recognized and sent to the distance sensor. A position correction sensor that corrects the position of the distance measured by and detects the tack welding position, and is formed on the lower front of the transfer table to control the welding position by detecting the position of the torch and the position of the filler metal supplied through the feeder. It is characterized in that it further includes a welding control camera.

In addition, the welding device that recognizes the welding line of the present invention and is capable of automatically transferring and tack welding is formed on both sides of the upper part of the transfer table, and control blocks formed on both sides of the lower part of the position control table are combined so that the position control unit is positioned at the front of the transfer table. and an adjustment rail formed to slide toward the rear, formed on the upper part of the transfer table and configured to rotate the ball screw by rotation of the drive motor, and a driving block formed at the lower part of the position control table in the rotation direction of the ball screw. a drive unit that moves to the front or rear of the transfer table to change the position of the position control table, and is formed in the first mounting hole of the position control table and is axially coupled to the torch to rotate the torch according to the welding position to adjust the angle. a first angle adjustment unit formed to adjust the angle of the feeder, and a first angle adjustment unit formed in the second mounting hole of the position control table and axially coupled to the feeder to adjust the angle of the feeder so that the filler metal is discharged according to the welding position. 2 An angle adjustment unit and a position located at the front lower part of the position control table to photograph the welding line and control the drive unit so that the torch and the supply are located at the center of the welding line to change the position of the position control table. It is characterized by further including a control camera.

In addition, the torch of the welding device that recognizes the welding line of the present invention and is capable of automatically transporting and tack welding is formed to be raised and lowered depending on the position of the welding line, so that it is maintained at a constant height regardless of the change in height of the welding line. It is characterized in that it is maintained and welding can be performed.

In addition, the transfer rail of the welding device capable of automatically transferring and tack welding by recognizing the welding line of the present invention is formed on the lower surface at regular intervals and further includes an attachment member made of permanent magnet or adhesive silicon so that it can be attached to the base material. The holder is provided with a plurality of chucks on the inner surface, so that when one side and the other side of the base material come into contact with each other, the chucks grip the base material and fix the position of the transfer rail.

In addition, the welding device of the present invention, which recognizes the welding line and is capable of automatically transferring and tack welding, is made of a conductive material at the bottom of the transfer table so that AC power or DC power supplied from the outside for welding can be supplied to the base material. It further includes an electrode terminal formed in contact with the torch, and the tungsten electrode formed on the torch is supplied with power from the outside to generate an arc according to alternating current or direct current power supplied to the base material by the electrode terminal. It is characterized by

As described above, according to the welding device capable of automatically transporting and tack welding by recognizing the weld line according to the present invention, the weld line between two base materials is recognized and tack welded while moving in the horizontal direction along the weld line to temporarily weld the base material. It has a bonding effect.

In addition, according to the welding device capable of automatically transporting and tack welding by recognizing the weld line according to the present invention, tack welding is automatically performed at regular intervals by measuring the transported distance, and the height is automatically adjusted according to the welding position to perform tack welding. There is an effect that can be done.

In addition, according to the welding device that recognizes the welding line and is capable of automatically transporting and tack welding according to the present invention, it has the effect of increasing the reliability of the tack welding area and minimizing the occurrence of repairs by supplying power for a short moment at the tack welding position.

Figure 1 is a perspective view showing a welding device capable of automatically transporting and tack welding by recognizing the weld line according to the present invention, performing tack welding.
Figure 2 is a plan view showing a welding device that recognizes the welding line and can automatically transfer and tack weld according to the present invention.
Figure 3 is an exploded view showing the configuration of a welding device capable of automatically transferring and tack welding by recognizing the welding line according to the present invention.
Figure 4 is a bottom perspective view showing the configuration of the transfer table of the welding device capable of automatically transferring and tack welding by recognizing the welding line according to the present invention.
Figure 5 is a front view showing the welding device performing tack welding by recognizing the welding line according to the present invention and enabling automatic transfer and tack welding.
Figure 6 is a bottom perspective view showing the bottom structure of a welding device capable of automatically transferring and tack welding by recognizing the welding line according to the present invention.
Figure 7 is a side view showing a welding device capable of automatically transferring and tack welding by recognizing the weld line according to the present invention, moving along the base material and tack welding.

Specific features and advantages of the present invention will be described in detail below with reference to the accompanying drawings. Prior to this, if it is determined that a detailed description of the functions and configuration related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

The present invention relates to a welding device that recognizes a welding line and is capable of automatically transporting and tack welding. More specifically, it relates to a welding line that performs tack welding while transporting the base material along the welding line before welding the base material so that the base metal is temporarily joined. It relates to a welding device that recognizes and allows automatic transfer and tack welding.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a perspective view showing a welding device capable of automatically transferring and tack welding by recognizing a welding line according to the present invention, and Figure 2 is a welding device that recognizes a welding line according to the present invention and automatically transfers and tack welding. It is a plan view showing how to perform tack welding with a possible welding device, and Figure 3 is an exploded view showing the configuration of a welding device capable of automatically transporting and tack welding by recognizing the welding line according to the present invention, and Figure 4 is an exploded view showing the configuration of the welding device according to the present invention. This is a bottom perspective view showing the configuration of the transfer table 200 of a welding device that recognizes the welding line and can automatically transfer and tack weld.

As shown in Figures 1 to 4, the welding device that recognizes the welding line according to the present invention and is capable of automatically transferring and tack welding has a holder 130 at one end and the other end for being mounted on and fixing the outer surface of one side and the other side of the base material. It is provided with a transfer rail 100 that is mounted parallel to the welding line (L) formed on the base material, and is formed so that it can be transferred along the transfer rail 100 and is formed to measure the transfer distance and gap for tack welding. A transfer table 200 and a position control table formed on the upper part of the transfer table 200 to detect the position of the welding line (L) and change to the front or rear of the transfer table 200 by the drive unit 330. (300) and is located in the first mounting hole 301 formed on one side of the front of the positioning table 300, sprays inert gas on the welding line (L) and creates an arc between the tungsten electrode 410 and the base material. The base material is tack-welded by supplying filler material 510 to the arc generated by the torch 400 for welding and the second mounting hole 302 formed on the other front side of the positioning table 300. It is characterized in that it includes a feeder 500.

The base material refers to the first base material 10 and the second base material 20 that are physically separated for welding, and the transfer rail 100 is either the first base material 10 or the second base material 20. It is designed so that it can be installed in .

In addition, the tack welding used in the present invention involves moving or twisting the first base material 10 and the second base material 20 before welding along the weld line L formed on the first base material 10 and the second base material 20. This means performing partial welding at regular intervals to prevent damage.

That is, the present invention temporarily fixes the first base material 10 and the second base material 20 through tack welding while they are physically separated from each other, so that when performing the main welding, the first base material 10 and the second base material 20 are physically separated from each other. (20) can be prevented from being separated.

In addition, the welding line (L) refers to an area for welding the first base material 10 and the second base material 20, and the first base material 10 is used to expand the area in contact with the molten filler metal 510. The upper edge of one side and the upper edge of one side of the second base material 20 are chamfered to form a V-shaped inclined surface.

In the present invention, the description will be made based on the fact that the transfer rail 100 is installed on the first base material 10, and the transfer rail 100 is substantially installed regardless of the first base material 10 or the second base material 20. Can be installed.

The transfer rail 100 is installed on the first base material 10 or the second base material 20 and is formed parallel to the weld line L where the first base material 10 and the second base material 20 are welded. As much as possible, the transfer table 200 serves as a guide so that it can be transferred while sliding in a horizontal plane.

At this time, holders 130 are provided at one end and the other end of the transfer rail 100 to prevent the transfer rail 100 from moving by being mounted on both outer surfaces of the first base material 10, and the lower end of the holder 130 is used for transport. It protrudes downward from the bottom of the rail 100, allowing the transfer rail 100 to be in close contact with both outer surfaces of the first base material 10.

As the holder 130 is in close contact with the outer surfaces of both sides of the first base material 10, the transfer rail 100 can be maintained in a state parallel to the front or back of the first base material 10, and through this, the first base material 10 can be maintained in a parallel state. It can also be arranged parallel to the welding line (L) located on the front of (10).

In other words, the parallel state of the welding line (L) and the transfer rail 100 can be automatically aligned just by the holder 130 being in close contact with the first base material 10, and only the position of the transfer rail 100 can be adjusted to the welding line. Welding preparations can be completed by transporting to a location adjacent to (L).

The transfer table 200 is formed on the upper part of the transfer rail 100 and slides toward one end and the other end of the transfer rail 100, and includes a position adjusting table 300 and a torch 400 coupled to the upper part of the transfer table 200. , the feeder 500 can be moved in parallel along the welding line (L).

The front of the transfer table 200 is provided with an opening 201 that opens from top to bottom, and the torch 400 and feeder 500 formed on the position control table 300 are located at a short distance from the welding line (L). It becomes possible.

In addition, a transfer block 210 is formed at the lower center of the transfer table 200 and is coupled to the upper part of the transfer rail 100 to slide, and is formed at the lower rear of the transfer table 200 and is formed to contact the upper part of the base material. A transfer wheel 220 is rotated by the transfer motor 230 to allow the transfer block 210 to be transferred along the transfer rail 100, and is formed on one side of the lower part of the transfer table 200 and has one end of the transfer rail 100. A distance sensor 250 that measures the distance between the transfer table 200 and the stand 130 by irradiating a laser toward the stand 130 formed in the transfer rail 100 is formed on one side of the lower part of the transfer stand 200. ), a position correction sensor 240 that recognizes a plurality of position detection spheres 120 formed at regular intervals on the upper part of the sensor, corrects the position of the distance measured by the distance sensor 250, and detects the tack position, and a transfer table It further includes a welding control camera 260 formed on the lower front of the 200 to control the welding position by detecting the position of the torch 400 and the position of the filler metal 510 supplied through the feeder 500. Do it as

The lower part of the transfer block 210 is restrained by the transfer rail 100 and is formed so that it can slide in the direction of one end and the other end of the transfer rail 100, and the upper part is coupled to the lower center of the transfer table 200 to enable transfer. The stand 200 can slide along the transfer rail 100.

The transfer wheel 220 is formed on one lower side of the transfer table 200 and is in contact with the upper surface of the first base material 10 and rotated by driving the transfer motor 230 to transfer the transfer table 200. It is used.

At this time, the transfer motor 230 can measure the rotation amount of the transfer wheel 220 through numerical control and measure the distance transported by the transfer wheel 220, based on the distance measured by the transfer motor 230. By stopping the transfer table 200 at regular intervals, it is possible to control tack welding to proceed by the torch 400 and the feeder 500.

It is preferable that the transfer wheel 220 and the transfer motor 230 are connected by a rotating shaft, and a gearbox is provided between the transfer motor 230 and the rotating shaft to rotate the transfer wheel 220 with a stable torque. desirable.

In addition, the outer surface of the transport wheel 220 is preferably made of a rubber material to minimize slip that occurs during transport. If necessary, the outer surface of the transport wheel 220 is formed with adhesive silicone to prevent the transport wheel 220 from stopping. When done, it may be fixed in an adhesive state to the first base material 10 and maintained in a stationary state.

At this time, the adhesive silicone may be formed at regular intervals along the edge of the outer peripheral surface of the transfer wheel 220, and the transfer motor 230 is composed of a brake motor to prevent the transfer wheel 220 from moving when stopped. desirable.

The distance sensor 250 is formed on one side of the lower part of the transfer table 200 and irradiates a laser toward the holder 130 located at one end of the transfer rail 100, and uses the reflected laser to detect the position of the transfer table 200. Used to measure position.

The distance measured by the distance sensor 250 is calculated using the holder 130 formed at one end of the transfer rail 100 as the zero point of absolute coordinates, and the distance measured by the rotation amount of the transfer motor 230 and the distance sensor ( By comparing the distance measured by 250), the error can be confirmed, and through this, the position of the transfer table 200 can be accurately determined.

In addition, the transfer motor 230 can check the position error caused by the slip of the transfer wheel 220 based on the distance measured through the distance sensor 250, and based on the position measured by the distance sensor 250. After calculating the distance that must be transferred to the next tack welding position, the transfer table 200 can be transferred by rotating the transfer wheel 220.

The position correction sensor 240 is formed on one side of the lower part of the transfer table 200 and recognizes a plurality of position detection spheres 120 arranged at regular intervals on the upper part of the transfer rail 100 to determine the distance sensor 250. It is used to correct errors due to the position measured by and the position measured by the transfer motor 230.

The position sensing spheres 120 formed at regular intervals on the transfer rail 100 are made of a magnetic or metal material that the position correction sensor 240 can detect, and the position correction sensor 240 can detect a magnetic or metal material. It is formed so that the position detection sphere 120 exposed as the transfer table 200 slides can be detected.

Since the position detection spheres 120 are formed at regular intervals along the transfer rail 100, the current position and physical distance of the transfer table 200 can be determined according to the number of position detection spheres 120 detected. , each detected position detection sphere 120 is used as the zero point of the reference coordinate, making it possible to determine the transfer distance of the transfer table 200.

Through this, when the position correction sensor 240 detects the position detection device 120, it is possible to determine the current location of the transfer table 200, and the distance measured through the distance sensor 250 and the position detection device 120 ) It is possible to improve and correct the error range of the distance sensor 250 by comparing the detected position.

In addition, the position correction sensor 240 can be used to select the tack welding position in accordance with the position detection tools 120 arranged at regular intervals, and based on this, the position where the tack welding is performed can be made evenly at regular intervals.

In addition, it is possible to compare the transfer amount calculated as the transfer motor 230 rotates based on the distance value detected by the position correction sensor 240, and to improve the position error caused by slip or vibration of the transfer wheel 220. For this reason, the transfer wheel 220 can further rotate the transfer motor 230 at a position where slip often occurs to correct the transfer amount on its own.

That is, if the transfer amount of the transfer table 200, which is transferred according to the rotation speed of the transfer motor 230, is insufficient due to wear or damage of the transfer wheel 220, the rotation speed of the transfer motor 230 is adjusted to automatically correct the distance. You can control it.

The welding control camera 260 is located on the lower front of the transfer table 200 and determines the position of the tungsten electrode 410 of the torch 400 and the filler metal 510 supplied from the feeder 500 and confirms the welding condition. It is used to

For this purpose, the welding control camera 260 is located adjacent to the upper part of the first base material 10, and the torch 400 and the feeder 500 are positioned at the designated welding position while photographing the tungsten electrode 410 and the filler metal 510 on the front. This is controlled so that welding can proceed.

That is, the filler material 510 is inputted into the arc generated by the tungsten electrode 410, and the molten filler material 510 is inputted into the welding line L between the first base material 10 and the second base material 20. The angle and position of the torch 400 and the feeder 500 can be controlled based on the captured image so that tack welding can proceed.

The position control table 300 is formed on the upper part of the transfer table 200 and is formed so that the torch 400 and the feeder 500 can be mounted on the front, and the torch 400 and the feeder 500 are connected to the welding line ( It is used to adjust the position in the front or rear direction of the transfer table 200 so that it is located at the top of L).

At this time, the position adjusting table 300 is formed in a T-shape, and a first mounting hole 301 and a second mounting hole 302 having square openings are formed on one side of the front and the other side of the front, respectively, so that the torch 400 and It is formed so that the supply device 500 can be mounted.

In addition, the control blocks 320 formed on both sides of the upper part of the transfer table 200 and the control blocks 320 formed on both sides of the lower part of the position control table 300 are combined so that the position control table 300 is positioned on the front and rear sides of the transfer table 200. The control rail 310 is formed to slide in the upper part of the transfer table 200 and the ball screw 334 is formed to rotate by the rotation of the drive motor 331, and the lower part of the position control table 300 A drive unit 330 in which the drive block 335 formed in is moved to the front or rear of the transfer table 200 according to the rotation direction of the ball screw 334 to change the position of the position adjusting table 300, and the position A first angle adjustment unit 360 is formed in the first mounting hole 301 of the adjuster 300 and is axially coupled to the torch 400 to adjust the angle by rotating the torch 400 to suit the welding position. And, it is formed in the second mounting hole 302 of the position adjusting table 300 and is axially coupled to the feeder 500 so that the angle of the feeder 500 can be adjusted so that the filler metal 510 is discharged according to the welding position. It is located at the lower front of the second angle adjustment unit 370 and the positioning table 300 to photograph the welding line (L) so that the torch 400 and the feeder 500 are located at the center of the welding line (L). It is characterized in that it further includes a position control camera 340 that controls the drive unit 330 to change the position of the position adjusting table 300.

The control rail 310 is used to allow the position adjuster 300 to be transferred to the front and rear of the transfer table 200. The support bar 270 protrudes toward the upper side from both sides of the upper part of the transfer table 200. ) is connected to the upper part of the.

At this time, an control block 320 is formed on the upper part of the control rail 310 and is formed to slide along the control rail 310, and the control blocks 320 are coupled to both sides of the lower front of the position control stand 300. This allows the transfer table 200 to slide along the control rail 310 and be transferred to the front or rear of the transfer unit 200.

The drive unit 330 is used to adjust the position of the position control table 300 by controlling it through numerical control. The drive motor 331 is coupled to the rear of the transfer table 200 and supplies rotational force. ) and a ball screw 334 that is formed to rotate by being coupled to the drive motor 331 and has a thread formed on the outer surface, and is located at the front and rear of the transfer table 200, respectively, and has one end of the ball screw 334 and The first fixture 332 and the second fixture 333 that support the other end are screwed to the outer surface of the ball screw 334, and the upper surface is coupled to the rear lower part of the position adjuster 300 to form the ball screw 334. It consists of a driving block 335 that changes the position of the position adjusting table 300 toward the front or rear of the transfer table 200 according to the rotation direction.

When the ball screw 334 is rotated by the rotation of the drive motor 331, the drive block 335, which is coupled to the position control table 300 and cannot rotate, can be moved to one end and the other end of the ball screw 334. The position adjuster 300, which can slide on the control rail 310 through the control block 320, is transferred by the drive block 335 to position the torch 400 and the feeder 500 at the welding line (L). You can do it.

The position control camera 340 is located at the lower front of the position control table 300, analyzes the position of the weld line (L) by photographing the weld line (L), and controls the operation of the drive motor 331 based on this. The torch 400 and the feeder 500 are used to control the position of the welding line (L).

That is, the drive unit 330 detects the welding line (L) based on the image information captured through the position control camera 340 and positions the tungsten electrode 410 and filler material 510 on the upper part of the welding line (L). ) is controlled.

In addition, the position control camera 340 can analyze the welding condition by photographing the tack welded area when welding for tack welding is completed, and if the welding condition is poor, it can be controlled to re-perform tack welding at a location adjacent to the defective area. It becomes possible.

If necessary, an intake unit (not shown) is formed at the lower part of the transfer table 200 to remove areas with poor welding, and areas determined to be defective through the position control camera 340 are welded with a torch 400. After applying heat, the molten filler metal 510 can be removed by sucking it into the intake unit.

In this case, there is an effect that the worker does not have to repair the defective part when welding is performed in earnest.

The first angle adjustment unit 360 is formed in the first mounting hole 301 of the position adjusting table 300 and is formed so that the torch 400 can be coupled, and the angle of the torch 400 is adjusted for welding. Used to control position.

The first angle adjustment unit 360 includes a pair of first support links 361 protruding from one surface of the first mounting hole 301 to support the outer surface of the torch 400, and a first support link 361. ) is located between the first support shaft 362 and is axially coupled to the outer surface of the torch 400 so that the first support link 361 can rotate, and the first support shaft 362 is formed on the first support link 361 and is formed on the first support link 361 It consists of a first support motor 363 that is linked with the support shaft 362 to rotate the torch 400 or fix it in a rotated state.

Based on the first support motor 363, the rotation angle of the torch 400 can be adjusted, and based on this, the position where the arc is generated can be controlled according to the position of the welding line (L).

The second angle adjustment unit 370 is formed in the second mounting hole 302 of the position adjuster 300 and is formed so that the feeder 500 can be coupled to the filler material by adjusting the angle of the feeder 500. (510) is used to control the input position.

The second angle adjustment unit 370 includes a pair of second support links 371 protruding from one surface of the second mounting hole 302 to support the outer surface of the supply 500, and a second support link 371. ) and a second support shaft 372 that is axially coupled to the outer surface of the feeder 500 so that the second support link 371 can rotate, and a second support shaft 372 formed on the second support link 371. It consists of a second support motor 373 that is interlocked with the support shaft 372 to rotate the feeder 500 or fix it in a rotated state.

Based on the second support motor 373, the rotation angle of the feeder 500 can be adjusted, and based on this, the angle at which the filler material 510 is input can be controlled depending on the position of the torch 400.

In addition, a lighting lamp 350 is provided at the front lower part of the position control table 300 to irradiate light toward the welding line (L) so that the position control camera 340 can clearly distinguish the welding line (L) or the welding state. there is.

The lighting 350 is made of LED and automatically adjusts the amount of light according to the external environment in which welding is performed, allowing the position control camera 340 to provide an optimized amount of light for filming and analysis.

In the present invention, welding will be explained based on TIG welding. TIG welding is welding using a non-consumable tungsten electrode, which has the highest melting point among metals, using an inert gas that does not combine well with other elements such as argon or helium. It is formed to protect the weld area.

TIG welding uses an arc to perform welding. The arc refers to a strong spark discharge that occurs between the two electrodes when a direct current is applied between the tungsten electrode 410 and the base material and then separated. To this end, the + terminal is connected to the first base material 10, and the - terminal is formed on the tungsten electrode 410 to generate an arc discharge.

Additionally, power can be supplied using AC power during TIG welding.

The detailed structure of TIG welding is general, so it will be omitted. In the present invention, the TIG welder is formed to be coupled to the transfer table 200, or the TIG welder is formed externally, and the wires and pipes are connected. It can be configured to supply inert gas and power to the torch 400.

The torch 400 is formed with a housing 420 that is formed in the center to couple and fix the tungsten electrode 410 and to supply an inert gas to the outer surface of the tungsten electrode 410. The housing 420 There is a connector (not shown) at the top of the TIG welder to receive power or inert gas.

When the transfer table 200 is transferred to the tack welding position, power is supplied to the torch 400 to generate an arc in the first base material 10 to weld it. At this time, the feeder 500 melts the filler metal by injecting the filler metal into the arc. It will be done.

That is, whenever the transfer table 200 is transferred to a preset tack welding position, the torch 400 and the feeder 500 are activated to automatically perform welding, and if necessary, the first base material (not tack welding) It can also be used in main welding to integrate 10) and the second base material 20.

In addition, the torch 400 is formed so that its height can be raised and lowered depending on the position of the welding line (L), so that welding can be performed while being maintained at a constant height regardless of changes in the height of the welding line (L). .

The torch 400 is formed to be rotatable by the first angle adjustment unit 360, and has a lifting unit (not shown) that can raise and lower the first angle adjustment unit 360 by a cylinder when necessary. It is further included, so that the position of the torch 400 can be varied up and down by the lifting unit.

Through this, even if a step occurs in the welding line (L) according to the shapes of the first base material 10 and the second base material 20, the welding line can be raised and lowered by the lifting unit, allowing the position of the torch 400 to be actively varied. do.

At this time, the positions of the welding line (L) and the torch 400 can be determined through the welding control camera 260, and the welding control camera 260 moves the torch (400) according to the height of the step formed in the welding line (L). ) It is possible to generate a control signal so that the height is variable.

The feeder 500 is open from one end to the other end so that the filler material 510 can be inserted. A pressure port is provided inside to hold the filler material 510, and then a supply unit (not shown) is formed at the other end. It is formed so that the filler material 510 can be discharged toward the torch 400.

At this time, since the filler material 510 discharged from the feeder 500 is a consumable that is melted and consumed, a supplementary unit (not shown) to replenish the filler material 510 is provided on the other front side of the positioning table 300 to supply the feeder ( When all of the filler metal 510 introduced into the 500 is used up, the prepared filler metal 510 can be inserted into the other end of the feeder 500 to ensure that welding continues.

In addition, the feeder 500 can determine the discharge speed, discharge location, and base metal spacing at which the filler material 510 is input through the welding control camera 260, and based on the results analyzed by the welding control camera 260, the filler material 510 (510) can be discharged.

Figure 5 is a front view showing the welding device that recognizes the welding line according to the present invention and performs tack welding by automatically transferring and tack welding, and Figure 6 shows the welding line being recognized according to the present invention and automatically transferring and tack welding. It is a bottom perspective view showing the bottom structure of a possible welding device, and Figure 7 is a side view showing the welding device capable of automatically transporting and tack welding by recognizing the weld line according to the present invention, moving along the base material and tack welding.

As shown in Figures 5 to 7, the lower part of the transfer table 200 of the welding device, which recognizes the welding line according to the present invention and is capable of automatically transferring and tack welding, is made of a conductive material and is supplied from the outside for welding. It further includes an electrode terminal formed in contact with the base material so that AC power or direct current power can be supplied to the base material, and the tungsten electrode rod 410 formed on the torch 400 is connected to the AC power or DC power supplied to the base material by the electrode terminal. It is characterized in that power is supplied from the outside to generate an arc.

For TIG welding, power must be supplied to the tungsten electrode 410 and the first base material 10 formed on the torch 400, and arc heat is generated between the tungsten electrode 410 and the first base material 10 by the supplied power. This can occur.

At this time, in the case of a general welder, an external power supply device is provided to connect the power source to the torch 400 on which the tungsten electrode 410 is formed and the first base material 10. When welding a large steel plate, the first base material is used. The wire connected to (10) is fixed and the wire connected to the torch 400 moves according to the transfer of the transfer table 200. As the gap between the two wires increases, the wire connected to the first base material 10 is separated according to the wire length. There was a problem in that it had to be moved to an area adjacent to the torch 400 and connected.

To solve this problem, in the present invention, the power terminal connected from the external power device to the first base material 10 is not directly connected, but is formed to contact the first base material 10 by an electrode terminal formed on the transfer table 200.

That is, a conductive electrode terminal is formed on the transfer table 200 to supply power supplied from an external power supply to the first base material 10, so that the torch 400 and the transfer table 200 are always at the same level. Since it is moved to a new location, problems caused by electrical wiring can be solved.

In addition, the transfer table 200 is preferably formed of an insulator to prevent electrical problems caused by the electrode terminal, and the end of the electrode terminal in contact with the first matrix is formed in a spherical shape that can be rotated independently. It is preferable that the transfer table 200 is configured to allow transfer and power supply while being in contact with the first base body.

In addition, the transfer rail 100 further includes attachment members 110 made of permanent magnets or adhesive silicon that are formed at regular intervals on the lower surface so that they can be attached to the base material, and the holder 130 has a plurality of chucks on the inner surface. This feature is provided so that the chuck grips the base material when it contacts one side and the other side of the base material to fix the position of the transfer rail 100.

The attachment member 110 is used to prevent the transfer rail 100 from separating or moving from the first base material 10 when it is installed on the first base material 10, and is provided in plurality on the lower surface of the transfer rail 100. Two permanent magnets or adhesive silicone are placed at regular intervals.

The permanent magnet formed on the attachment member 110 can be used when the first base material 10 is made of a magnetic material, and the transfer rail 100 can be closely adhered to and fixed to the first base material by the magnetic force of the permanent magnet. .

In the case of adhesive silicone, it can be used when the first base material 10 is not a magnetic material, and silicone containing an adhesive component can be directly bonded to the surface of the first base material 10 and temporarily fixed thereto.

Permanent magnets and adhesive silicone can be used at the same time, and in this case, it is preferable that the permanent magnets and adhesive silicone are installed at regular intervals, crossing each other one by one.

The holder 130 formed at one end and the other end of the transfer rail 100 has a plurality of chucks formed on its inner surface, so that it can be physically fixed by pressing one side and the other outer surface of the first base material 10. .

At this time, the chuck formed on the holder 130 may be used electrically or may be formed to be engaged or released according to the tightening of the bolt. Since the holder 130 may be fixed to the first base material 10 by the chuck, the transfer rail Even if the transfer table 200 is moved after 100 is installed, it can be prevented from being separated from the first base material 10 due to shock or vibration.

According to the welding device of the present invention that recognizes the welding line and is capable of automatically transporting and tack welding to solve the above problems, the welding line between the two base materials is recognized and the base material is tack-welded while moving horizontally along the weld line. Temporarily welding and measuring the transported distance, tack welding is automatically performed at regular intervals. The height is automatically adjusted according to the welding position to perform tack welding. Power is supplied for a short moment at the tack welding position to close the tack welding area. It has the effect of increasing reliability and minimizing the occurrence of repairs.

As described above, the present invention has been described with a focus on preferred embodiments, but those skilled in the art may vary the present invention without departing from the technical spirit and scope of the claims of the present invention. It can be implemented by modifying or modifying it accordingly. Accordingly, the scope of the present invention should be construed by the appended claims to include examples of many such modifications.

10: first base material 20: second base material
L: Welding line 100: Transfer rail
110: Attachment member 120: Position sensing device
130: Holder 200: Transfer stand
201: opening 210: transfer block
220: transfer wheel 230: transfer motor
240: Position correction sensor 250: Distance sensor
260: welding control camera 270: support
300: Position adjuster 301: First mounting hole
302: second mounting hole 310: control rail
320: Control block 330: Drive unit
331: Drive motor 332: First fixture
333: 2nd fixture 334: ball screw
335: Driving block 340: Position control camera
350: lighting 360: first angle adjustment unit
361: first support link 362: first support axis
363: first support motor 370: second angle adjustment unit
371: second support link 372: second support axis
373: 2nd support motor 400: TIG welder
410: Tungsten electrode 420: Housing
500: Feeder 510: Filler metal

Claims (6)

A transfer rail provided at one end and the other end to be mounted and fixed on one side and the other outer surface of the base material and placed in parallel with the weld line formed on the base material;
a transfer table configured to be transferred along the transfer rail and configured to measure transfer distances and intervals for tack welding;
a position control table formed on the upper part of the transfer table to detect the position of the welding line and change the position to the front or back of the transfer unit by a drive unit;
a torch positioned in the first mounting hole formed on one front side of the positioning table to weld the base material by spraying an inert gas into the welding line and generating an arc between the tungsten electrode and the base material;
A feeder located in the second mounting hole formed on the other front side of the positioning table and tack-welding the base material by supplying filler metal to the arc generated by the torch.
A welding device that recognizes the welding line and allows automatic transfer and tack welding.
According to clause 1,
a transfer block formed at the lower center of the transfer table and coupled to and sliding on an upper part of the transfer rail;
a transfer wheel formed at the lower rear of the transfer table, formed to contact the upper part of the base material, and rotated by a transfer motor to transport the transfer block along the transfer rail;
a distance sensor formed on one lower side of the transfer table and measuring the distance between the transfer table and the stand by irradiating a laser toward the stand formed at one end of the transfer rail;
a position correction sensor that is formed on one side of the lower part of the transfer table and recognizes a plurality of position detection spheres formed at regular intervals on the upper part of the transfer rail, corrects the position of the distance measured by the distance sensor, and detects the tack position;
A welding control camera formed on the lower front of the transfer table to control the welding position by detecting the position of the torch and the filler metal supplied through the feeder.
A welding device that recognizes the welding line and allows automatic transfer and tack welding.
According to clause 1,
Control rails formed on both sides of the upper part of the transfer table and connected to control blocks formed on both sides of the lower part of the position control table so that the position control table slides toward the front and rear of the transfer table;
It is formed on the upper part of the transfer table and the ball screw is formed to rotate by the rotation of the drive motor, and the driving block formed on the lower part of the position control table moves toward the front or rear of the transfer table depending on the rotation direction of the ball screw. A driving unit that changes the position of the position adjusting table;
a first angle adjustment unit formed in the first mounting hole of the position adjustment table and axially coupled to the torch to adjust the angle by rotating the torch to suit the welding position;
a second angle adjustment unit formed in the second mounting hole of the position adjusting table and axially coupled to the feeder to adjust the angle of the feeder so that the filler metal is discharged according to the welding position;
A position control camera located at the front lower part of the position control table photographs the welding line and controls the drive unit so that the torch and the feeder are positioned at the center of the welding line to change the position of the position control table. characterized by
A welding device that recognizes the welding line and allows automatic transfer and tack welding.
According to clause 1,
The torch is
It is formed so that the height can be raised and lowered depending on the position of the welding line, so that welding can be performed by maintaining a constant height regardless of changes in the height of the welding line.
A welding device that recognizes the welding line and allows automatic transfer and tack welding.
According to clause 1,
The transfer rail is
It further includes an attachment member formed at regular intervals on the lower surface and made of a permanent magnet or adhesive silicon so that it can be attached to the base material,
The holder is provided with a plurality of chucks on the inner surface, and when it contacts one side and the other side of the base material, the chucks grip the base material and fix the position of the transfer rail.
A welding device that recognizes the welding line and allows automatic transfer and tack welding.
According to clause 1,
It further includes; an electrode terminal made of a conductive material at the lower part of the transfer table and formed in contact with the base material to supply alternating current or direct current power supplied from the outside for welding to the base material;
The tungsten electrode formed on the torch is characterized in that power is supplied from the outside to generate an arc by alternating current or direct current power supplied to the base material through the electrode terminal.
A welding device that recognizes the welding line and allows automatic transfer and tack welding.