KR100893874B1 - Automatic TIG welding device with horizontal weaving driving-device for jointing steel pipes - Google Patents

Abstract

Steel tube TIG automatic welding device having a horizontal weaving drive device according to the present invention, the support is installed in a horizontal direction to the structure supported on the carriage or the carriage that rotates around the steel pipe; A weaving motor installed at an upper portion of the support; A weaving plate positioned under the support and reciprocating sliding motion; A weaving generator provided at the weaving motor side to allow the weaving shaft to repeat the weaving operation; In the structure connected to the weaving plate, it is configured to include a welding torch and a welding wire that is mounted to enable weaving welding when welding the connection portion of the steel pipe, thereby minimizing the occurrence of play between the steel pipe welding portion and the welding torch within the weaving section of the welding The stability and welding precision can be improved, and excellent welding quality can be obtained at the connection portion of the steel pipe, thereby increasing the reliability of the pipe construction work.

Weaving motor, sliding, welding torch, welding wire, butt welding, TIG welding

Description

Automatic TIG welding device with horizontal weaving driving-device for jointing steel pipes}

The present invention relates to a steel pipe connection construction equipment, and more particularly to a steel pipe TIG automatic welding device having a horizontal weaving drive device to enable the sliding weaving operation when welding the steel pipe to improve the welding stability and welding precision. will be.

Applicant has developed the technology to maximize the durability of piping system by securing the workability, economic efficiency, safety and quality of welded joints by automatically performing piping and welding when constructing large steel pipes in all field conditions such as general earth and sand section. It continues.

Applicant, based on the achievements of such research and development, "Applicant method of steel pipe" (Patent No. 10-0440555), "Forming device of steel pipe" (Patent No. 10-0440185), "Forming device of steel pipe" (Patent No. 10-0598551) was filed for a patent from the Korean Intellectual Property Office.

1 to 4 is a view disclosed in Patent No. 10-0598551 of the above patent invention, with reference to this briefly about the orthopedic device of the steel pipe as follows.

1 is a perspective view showing a state in which an orthopedic joint is suspended by a backhoe, FIG. 2 is a front view of an orthopedic joint, and FIG. 3 is an outer surface of both steel pipes to be connected by installing a welding robot on a side of the orthopedic joint. 4 is a side view showing the welding state, and FIG. 4 is a front view showing the welding state of the outer surface of the steel pipe.

Steel orthopedic fitting device disclosed in the above patent invention, as shown in Figure 1 is configured to be transported to the working arm (R), crane (not shown), etc. of the backhoe (BH) is configured to be put or removed from the work site.

The steel pipe orthopedic device, the upper portion is provided with a connecting device 40 that can be connected to the working arm (R) or crane, etc., a pair of forming machines 10 are located side by side, to hold the ends of both steel pipes respectively. It is configured to be. At this time, the pair of molding machines 10 are connected to each other through the connecting device 40 and the traction device 20.

Each shaper 10 is formed to form a circular structure when closed, as shown in Figure 2 is provided with a semi-circular body (11a) at the top, a pair of quarter-shaped body (11b) at the bottom, The pair of quarter-shaped bodies 11b are connected to the lower portion of the semi-circular body 11a by a hinge 13 to be opened and closed when coupled and separated around the steel pipe.

The opening and closing operation of the quarter-shaped body 11b is performed by the opening-closing cylinder 14 connecting between the semi-circular body 11a and the quarter-shaped body 11b.

In addition, the locking device 15 is provided at a portion where both the quarter-shaped bodies 11b abut each other so that the forming machine 10 does not open in a closed state in a circular structure.

Each molding machine 10 is provided with a plurality of shaping devices 16 in which a cylinder is operated in a radial direction at regular intervals so as to shape the roundness of both steel pipes while holding both steel pipes P to be connected.

1 and 3, between the two forming machines 10, in a state in which one forming machine 10 is fixed to one steel pipe, the other forming machine 10 is pulled to allow the other steel pipe to be inserted into the other steel pipe. Apparatus 20 is provided.

On the other hand, in the forming device of the steel pipe, a welding robot 30 is provided in one forming machine 10 as shown in FIG.

The welding robot 30 is made to weld the outer surface of the steel pipe through the welder 33 while moving around the steel pipe along the running rail 32 provided on the side of one molding machine 10.

Accordingly, the steel pipe orthopedic joint of the present invention forms the ends of both steel pipes with a predetermined roundness while inserting both steel pipes P to be connected as shown in FIG. After the connection, it is configured to be welded using the welding robot 30 as shown in Figs.

In addition to the welding robot 30 of the patent invention as described above, the welding apparatus of the conventional steel pipe is a weaving (wetting) so that the welding torch or the welding rod may be repeatedly moved in the left and right directions with respect to the welding progress direction during the welding operation. weaving) is configured to enable welding.

However, since the weaving motion of the conventional welding apparatuses is mainly configured to weld while rotating rotational movement around the welding torch or the clamp supporting the welding rod, the weld bead is uniformly formed in the steel pipe connected by the butt welding method. There is a problem that the welding quality is not easy to do so.

That is, since the welding torch and the welding wire are repeatedly performed by weaving welding, the distance between the welded steel pipe and the torch and the welding wire is farther away from the center where the welded steel pipe is butt welded. There is a problem that the welding quality may be reduced because it is not constant.

In addition, the conventional welding apparatus has a problem that it is difficult to implement a more precise and stable weaving motion because the welding torch is configured to implement a weaving motion while rotating about one axis.

The present invention has been made to solve the above problems, and configured to reciprocate the structure supporting the welding torch in a sliding manner, to implement the weaving operation of the welding torch, thereby minimizing the occurrence of play between the weld and the welding torch It is an object of the present invention to provide a steel pipe TIG automatic welding device having a horizontal weaving drive device that can improve welding stability as well as improve welding accuracy and improve the reliability of the steel pipe connection part.

In another aspect, the present invention provides a steel pipe TIG automatic welding device having a horizontal weaving drive device to enable a more stable weaving operation by the sliding method of the weaving drive method, and also to make the overall structure simple. There is another purpose.

Steel pipe TIG automatic welding device having a horizontal weaving drive device according to the present invention for realizing the above object, the carriage rotates around the steel pipe; A support installed in the horizontal direction on the carriage or the structure supported by the carriage; A weaving motor installed at an upper portion of the support to generate a driving force; A weaving plate positioned under the support and configured to reciprocally slide under the support according to the operation of the weaving motor; A weaving shaft which transmits a weaving motion force to the weaving plate by the weaving motor; A weaving generator provided at the weaving motor side to allow the weaving shaft to repeat the weaving operation; The structure connected to the weaving plate, characterized in that it comprises a welding torch and a welding wire is mounted to enable weaving welding when welding the connection of the steel pipe.

Here, the support is preferably formed with a weaving hole through which the weaving shaft passes.

The weaving generating unit may include a motor gear that rotates according to the forward rotation reverse rotation operation of the weaving motor, and a rack that is engaged with the motor gear and reciprocates to transfer the weaving operation force to the weaving shaft.

Alternatively, the weaving generating unit may be configured to include a cam mechanism for generating a weaving actuation force while rotating by the weaving motor in close contact with the weaving shaft.

The structure connected to the weaving plate in the above, the fixed block fixed to the lower portion of the weaving plate, the rotary block rotatably connected to the side of the fixing block, and the welding torch connected in a vertical direction to the lower portion of the rotary convex It is preferably configured to include a torch clamp is mounted, and a wire clamp provided on the side of the torch clamp so that the welding wire is supplied.

Steel pipe tag (TIG) automatic welding device having a horizontal weaving drive device according to the present invention configured as described above is in the weaving section because it is configured to enable weaving welding while reciprocating the welding torch and welding wire in a sliding drive method. In this case, the gap between the welded steel pipe and the welding torch is minimized, thereby improving welding stability and improving welding accuracy.

In particular, the weld bead is uniform because weaving can be carried out with the gap (gap) between the steel pipe welded part and the welding torch and the welding wire at the time of welding the steel pipe butt TIG according to the sliding weaving operation. It is formed so that, there is an advantage that can contribute to the improvement of welding quality.

As described above, as the welding stability and the welding precision are improved, the welding quality of the steel pipe connection part may be excellent, thereby increasing the reliability of the piping construction work.

In addition, the present invention, since the weaving drive method is implemented by a sliding method, more stable weaving operation is possible, and the overall structure is also made simple, the configuration of the welding device is easy, there is an advantage that the operability can be improved.

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

For reference, in describing an embodiment of the present invention, the automatic welding device for connecting a steel pipe having a horizontal weaving driving apparatus according to the present invention will be described in two types.

That is, an embodiment in which the horizontal weaving drive device of the present invention is applied to the portable type automatic welding device will be described with reference to FIGS. 5 to 16, and the single body type automatic welding device will be described with reference to FIGS. 17 to 22. Another embodiment to which the horizontal weaving drive device of the present invention is applied will be described.

The automatic welding device according to the present invention is a device for welding and connecting the connecting portions of both steel pipes in a state where both steel pipes to be connected are welded together after being joined to each other using a steel pipe shaping device (not shown) or the like.

First, referring to FIGS. 5 to 16, a portable automatic welding device and a horizontal weaving driving device applied thereto will be described.

5 and 6 are a perspective view and an enlarged view of the main portion of the portable automatic welding device according to the present invention mounted on the circumference of the steel pipe, Figure 7 to Figure 9 is a front view, side view of the portable automatic welding device according to the present invention And plan view. 10 is a view illustrating a state in which a travel body is mounted on the travel rail of the present invention.

In the automatic welding apparatus of the present invention, referring to FIG. 5, a traveling rail 110 is installed in a circular ring structure around one steel pipe P, and the carriage 200 moves along the traveling rail 110. The welding machine 300 is provided in the structure, and it is comprised so that the connection part of both steel pipes may be welded.

The traveling rail 110 constitutes a traveling rail assembly 100 which will be described below, with reference to the traveling rail assembly 100.

The traveling rail assembly 100 includes a traveling rail 110 having a long plate shape, and a spike 120 for fixing the traveling rail 110 to the periphery of the steel pipe P.

The traveling rail 110 is formed in a divided structure to be mounted around the steel pipe P. In the drawings of the present embodiment, a two-split structure is illustrated.

The divided part includes a rail assembly 130 for assembling or separating the divided traveling rails 110 from each other.

The rail assembly 130 is mutually connected by the connecting member 133 fastened through both of the assembling blocks 131 in a state in which the assembling blocks 131 are respectively installed at the ends of the divided traveling rails 110. By being fixed, the divided traveling rails 110 are assembled to each other to have an integral ring structure.

Of course, when disassembling the running rail 110, when the connection member 133 is released in the opposite manner, both of the assembling blocks 131 are separated and the running rail 110 is divided.

The spike 120 is a portion for mounting and fixing the traveling rail 110 around the steel pipe (P), and the boss body 121 is fixed to the inner surface of the traveling rail 110 through a fixing bolt 125 and , In the state of being fixed to the end of the boss body 121 is made of a close contact plate 123 in close contact with the outer surface of the steel pipe (P).

The boss body 121 is preferably made of a material such as synthetic resin having a certain elastic force, the contact plate 123 is preferably made of the same material or metal member as the steel pipe. This is because the close contact plate 123 is made of a metal member has a strong adhesion around the steel pipe, the boss body 121 is to provide a constant degree of elastic force when the close contact plate 123 is in close contact with the steel pipe will be. Of course, the close contact plate 123 may be configured of a hard synthetic resin plate.

The spike 120 may be in close contact or spaced apart from the circumferential surface of the steel pipe (P) by moving in a radial direction through fastening or loosening the fixing bolt 125 penetrated from the outer surface of the running rail (110). .

Now, the configuration of the traveling rail 110 will be described in detail.

The running rail 110 according to the present invention is formed to support the carriage 200 and the welder 300 in a stable state, and is formed in a long plate structure, and the inner and outer circumferential surfaces of both sides of the plate are All are inclined.

That is, the inclined surfaces 111 are formed such that four corners positioned at both sides of the travel rail 110 are chamfered, and the rollers 213 of the carriage 200, which will be described later, are configured to move while in contact. .

The driving gear 110 is coupled to the driving gear 219 of the carriage 200 to form a gear tooth 115 that allows the carriage 200 to rotate along the traveling rail 110.

Gear tooth 115 is preferably formed on one side of the running rail 110, if necessary, formed of a material different from the running rail 110 is installed in a structure fixed to the side of the running rail (110) It is also possible. The reason why the gear teeth 115 are formed of different materials and coupled to the traveling rail 110 is to ensure that the gear teeth 115 are not easily worn during the driving of the carriage 200 and maintain a long life. It is for.

Next, the carriage 200 that rotates around the steel pipe along the traveling rail 110 as described above will be described.

The carriage 200 according to the present invention is configured to stably travel along the traveling rail 110 and is configured to adjust the welding position back and forth and up and down while supporting the welder 300.

8 and 9, the carriage 200 is composed of a traveling body 210, a mounting unit 230, and a welder adjusting unit 250. Each configuration will be described.

First, the driving body 210 will be described with reference to FIG. 10.

The travel body 210 includes a travel body 211 constituting the body and a plurality of travel rollers 213 installed on the travel body 211 and closely contacted to both inclined surfaces 111 of the travel rail 110. It is composed.

The traveling body 211 has roller mounting portions 212 erected vertically on both sides thereof, and the traveling rollers 213 are rotatably installed inside the roller mounting portions 212. In this case, it is preferable that the traveling rollers 213 are provided with four pairs of rollers, two pairs at the front and two pairs at the rear in the moving direction of the carriage 200.

In the traveling body 211, among the traveling rollers 213, rollers closely contacted to one side of the traveling rail 110 are linearly adjusted to adjust the degree of adhesion or the carriage 200 is moved to the traveling rail 110. The roller adjuster 215 is configured to be removable.

The roller adjuster 215 may be configured as an adjustment knob made of a screw coupling structure to the travel body 211 outside the roller mounting portion 212 on one side (right in the drawing) of the travel body 211.

A travel motor 217 is formed on the top of the travel body 210 to generate a driving force. In this embodiment, the mounting plate 231 is installed on the upper surface of the travel body 211. The travel motor 217 is installed at the top of the.

A driving gear 219 meshed with the gear tooth 115 of the traveling rail 110 is installed inside the traveling body 211, and the carriage 200 moves while the driving force of the traveling motor 217 is rotated. And configured to move along 110. Of course, a power transmission means is connected between the driving motor 217 and the driving gear 219 so as to transmit rotational power. The power transmission means includes a speed reducer 221, a mounting plate 231, and a traveling body 211. It consists of a drive shaft 223 installed through.

Next, the mounting unit 230 will be mainly described with reference to FIGS. 8 and 9.

The mounting unit 230 is largely composed of a mounting plate 231, a control box 235 provided thereon, a wire feeding device 240, and the like.

Mounting plate 231 is fixedly installed on the upper portion of the traveling body 211, while both sides are inclined in the direction of the steel pipe so as to secure a sufficient mounting area on the upper portion to reduce the mounting height from the center of the steel pipe (P) as much as possible It is made of a curved structure.

 That is, with reference to FIG. 7, the mounting plate 231 has the horizontal board 232 located in the center part, and the wing board 233 inclined in the circumferential direction of the steel pipe on both sides about this horizontal board 232. ) Is located.

The horizontal plate 232 is provided with a vertical leveling device, and both wing plates 233 are provided with a control box 235 and a wire feeder 240, respectively.

Here, the control box 235 and the wire feeder 240 installed on the wing plate 233 will be described.

The control box 235 is a part composed of circuits for controlling the overall welding operation, the moving speed of the carriage 200, the feeding speed of the wire, the position adjustment of the welder 300, the power supply of the welder 300, It is configured to control various elements that need to be controlled.

The control box 235 may constitute some control unit in the box itself, and the other control unit may be configured through a separate control box. The configuration of the adjuster box 310 will be described again below.

The wire feeding device 240 is a feeding roller 243 on which the welding wire 241 is wound, and a feeding supply for supplying a supply force to supply the welding wire 241 to the welding machine 300 by the feeding roller 243. In order to supply the welding wire 241 to the motor 245, the feed regulator 247 for adjusting the supply speed of the welding wire 241, and the wire clamp 380 to be described later on the feed regulator 247 side. The feed cable 248 is connected to.

Next, the welder adjusting unit 250 will be described.

The welder adjusting unit 250 is installed to be supported on the horizontal plate 232 of the mounting plate 231, so that the position of the welding torch 370 of the welding machine 300 in the horizontal (front and rear) or vertical (vertical) direction. The horizontal adjuster 251 and the vertical adjuster 255 are configured to adjust the position.

The horizontal adjuster 251 and the vertical adjuster 255 use a linear motor to move the welder 300 horizontally (forward and backward lengthwise) or vertically (radially in the direction of the steel pipe) like a conventional position adjusting device. It may be configured to be moved to, but in the present embodiment, the horizontal adjustment unit 251 is configured to enable manual adjustment, the vertical adjustment unit 255 illustrates a configuration configured to enable automatic adjustment.

That is, the horizontal adjustment unit 251 is a pair of horizontal shaft 252 located in the horizontal direction on the upper portion of the mounting plate 231 is inserted into the guide bracket 253 fixed to the mounting plate 231 In the state, after adjusting the position of the front and rear direction to an appropriate length, and then using the fixing handle to fix the position fixing block 254, the position of the horizontal axis 252 is configured to be fixed. Of course, it is also possible to configure not only the manual method but also automatically adjust the horizontal position using a linear motor or the like.

The vertical adjustment unit 255 is configured to move the first support 258 in the vertical direction, that is, the vertical direction, the drive motor is installed in the vertical adjustment box 257 like a normal vertical position adjustment device, The first support 258 moves up and down by the driving force of the drive motor.

Of course, the vertical adjustment box 257 is fixedly installed in the vertical direction to the connection plate 256 connected to the horizontal adjustment unit 251, therein the drive motor, vertical guide shaft, gear or chain for vertical operation And the like.

Next, a welding machine 300 supported by the carriage 200 as described above and performing welding will be described.

The welder 300 will be described in order from the portion connected to the vertical adjuster 255, the first support 258, the adjuster box 310, the second support 320, the weaving actuator 330, and the fixing block 340. ), A rotating block 350, a torch clamp 360, a welding torch 370, a wire clamp 380, and the like.

The first support 258 is formed long in the left and right direction, it is preferably formed of a rod structure made of an insulating material.

In the middle portion of the first support 258, when the welding torch 370 rotates back and forth, a deleting unit 259 is formed so that interference does not occur. The size and depth of the eraser 259 may be appropriately set according to the shape of the welding torch 370.

One side of the first support 258 is provided with a regulator box 310, the regulator box 310 is configured to adjust the welding operation, weaving speed and the like.

The second support 320 is installed long in the front and rear direction from the bottom of the first support 258 to the upper and lower weaving operation unit 330 is configured.

The weaving motor 331 is installed on the upper portion of the second support 320, the weaving plate 333 to enable the weaving operation is installed on the lower portion.

That is, the weaving plate 333 is installed to allow relative movement with the second support 320 so that when the weaving motor 331 operates, the welding torch (sliding forward and backward from the second support 320) 370 is configured to enable weaving welding.

A fixing block 340 is installed below the weaving plate 333.

The rotating block 350 is installed on the side of the fixed block 340, the rotating block 350 is configured to be connected to be rotated in the front and rear direction from the fixed block 340.

The reason why the fixed block 340 and the rotation block 350 are installed to be rotatably connected to each other and a detailed structure thereof will be described below with reference to FIGS. 13 to 16.

The torch clamp 360 is installed in the rotary block 350, and the welding torch 370 is assembled into the rotary block 350 by inserting the torch clamp 360 and the rotary block 350 upward and downward.

A cooling water passage for cooling the welding torch 370 during welding is formed inside the torch clamp 360, and a cable 361 for supplying power and cooling water to the welding torch 370 is connected. .

One side of the torch clamp 360 is provided with a wire clamp 380 for supporting the welding wire 241 provided from the wire feeder 240 and at the same time to guide the wire supplied to the end of the welding torch 370. .

In particular, the torch clamp 360 is rotatably installed in the rotation block 350 by 180 degrees, for the purpose of freely selecting and operating the welding direction in the clockwise or counterclockwise direction when welding the steel pipe.

Detailed description thereof will be described below with reference to FIGS. 13 to 16.

The welding torch 370 mounted on the torch clamp 360 is configured to enable the gas-tungsten arc welding method, that is, the TIG welding method, among the arc welding methods. It is configured to supply an inert gas (eg, argon gas) around the electrode, and is configured to melt and weld the welding wire 241 while generating an arc between the electrode and the welding portion during welding.

The torch clamp 380 is a component that supports to continuously supply the welding wire 241, that is, the solid wire (SOLID WIRE) to the welded portion of the steel pipe, so as to properly adjust the supply position of the welding wire It is composed.

Now, the structure of the above-mentioned weaving operation unit 330 and the welding torch rotating structure will be described.

First, referring to FIGS. 11 and 12, the weaving operation unit 330 will be described in detail.

FIG. 11 is a side view illustrating the welder weaving structure of the present invention, and FIG. 12 is a plan view seen from the line B-B of FIG. 11.

The second support 320 is connected to the weaving shaft 335 which repeatedly moves from side to side between the weaving motor 331 and the weaving plate 333 when viewed from the side.

Of course, the second support 320 is formed with a weaving hole 321 through which the weaving shaft 335 penetrates, and the weaving hole 321 is a slot formed long in the movement direction of the weaving shaft 335. It is preferable that it consists of a structure.

In the weaving motor 331, the weaving generating unit may be configured to repeatedly operate the weaving shaft 335, and the weaving generating unit may rotate according to the forward rotation or the reverse rotation of the weaving motor 331. Motor gear 337 and a rack 338 that moves left and right in accordance with the rotational movement of the motor gear 337. Of course, the rack is configured to linearly move along a guide mechanism for guiding linear movement in the weaving motor, and the weaving shaft 335 is fixedly installed at one side.

Here, the weaving motor 331 may be configured as a stepping motor capable of precise control by an inverter.

In addition, the second support 320 is preferably provided with a guide mechanism for guiding the weaving plate 333 to the stable sliding reciprocating motion.

As described above, the weaving operation unit 330 according to the present invention is configured to enable the weaving operation of the welding torch 370 by the reciprocating sliding motion, thereby implementing the steel pipe welding while implementing a stable horizontal direction weaving motion with a simple driving structure. You can do it.

Next, with reference to FIG. 13 and FIG. 14, the back and forth rotational motion of a welding torch is demonstrated.

Figure 13 is an exploded perspective view for explaining the front and rear rotational motion of the welding torch in the present invention, Figure 14 is a cross-sectional view of the combined state of the two blocks seen in the direction of C-C of FIG.

As shown in these figures, the torch support is divided into a fixed block 340 and a rotating block 350, the fixed block 340 is installed fixed to the weaving plate 333, the rotating block 350 is configured to be coupled to the rotating shaft 353 to the fixed block 340 to rotate.

That is, a shaft hole 343 is formed inwardly from the side of the fixing block 340, the rotating block 350 is installed so that the rotating shaft 353 protrudes long, the rotating shaft 353 is the shaft hole 343 ), The rotation block 350 is assembled to the fixed block 340 in a fixed state by fixing its position with the detent knob 345 provided in the fixing block 340.

Here, a detent ball 346 and a groove 354 provided in a normal detent mechanism are formed between the detent knob 345 and the rotation shaft 353 of the fixing block 340, respectively, so that the rotating block ( 350 is configured to stop exactly at the set angle.

The reason why the rotating block 350 is configured to be rotatable from the fixed block 340 is that the rotating block 350 is replaced when the welding torch 370 inserted and installed in the vertical direction to the torch clamp 360 is replaced. Is to be able to replace the welding torch 370 more conveniently in a state rotated 90 degrees forward from the fixing block 340.

Next, referring to FIGS. 13 to 16, the 180-degree left-right rotational motion of the welding torch 370 will be described.

15 and 16 is a front view of the main portion showing a rotating structure of the welding torch in the present invention.

In the present invention, the welding torch 370 is installed to enable a 180-degree rotational movement to the rotary block 350, which allows the vertical axis 363 provided in the torch clamp 360 to rotate on the rotary block 350. It is configured to be possible by installing in combination.

That is, when the torch clamp 360 is rotated in the left or right direction while the vertical axis 363 of the torch clamp 360 is inserted into the rotary block 350, the wire clamp 380 is connected to FIG. 15. As shown in FIG. 16, the welding torch 370 moves to the left side or the right side.

This structure, as shown in Figure 13 and 14, the detent coupling structure in a state that the vertical axis 363 of the torch clamp 360 is inserted into the torch hole 351 of the rotary block 350. The position is determined by the 180 degree phase difference.

That is, the detent ball 357 supported by the detent bolt 355 and the spring 356 is mounted in the torch hole 351, and the detent groove is formed in the vertical axis 363 of the torch clamp 360. As the 364 is formed, the position of the welding torch 370 may be accurately determined.

On the other hand, the rotating block 350 is formed so that one portion is divided around the torch hole 351 is configured to firmly fix the torch clamp 360 by using a tightening bolt 358.

As described above, when welding the steel pipe as configured to rotate the torch clamp 360, the welding direction is set in the clockwise or counterclockwise direction of the steel pipe as shown in Figs. The welding torch and the wire clamp are rotated and positioned according to the direction so that welding can be freely performed in any direction of the steel pipe.

Next, a single body type automatic welding device and a horizontal weaving driving device applied thereto will be described with reference to FIGS. 17 to 22. For reference, the same reference numerals are given to the same or similar components as the above-described portable type automatic welding apparatus, and detailed description thereof will be omitted.

Figure 17 is a perspective view showing a single body type automatic welding apparatus according to the present invention, Figure 18 is a detailed view of the main portion is shown a single body type automatic welding apparatus according to the present invention, Figure 19 is a single body type according to the present invention Front view of main part of automatic welding device.

As shown, the single-body automatic welding device according to the present invention is provided with a circular body 50 having a circular structure to be coupled to both ends of the steel pipe (P). The circular body consists of a semi-circular upper body 55 and quarter-shaped bodies 56 and 57 which are coupled to both of the upper body 55.

The upper body 55 is divided into a size of about 1/2 in a circular structure, the quarter-shaped body (56, 57) is divided into a size of about 1/4, so as to be assembled together to hold the circumference of the steel pipe A circular structure is achieved.

An opening and closing device (not shown) is provided between the upper body 55 and both quarter-shaped bodies 56 and 57 to control the opening and closing state of the quarter-type bodies 56 and 57, and the both quarter-type bodies 56 are provided. The contact portion (57) is provided with a locking device (80) to prevent the opening in the state holding the steel pipe.

The circular body 50 is provided with an orthopedic device 90 so that the device of the present invention can be fixed around the steel pipe while adjusting the roundness of the steel pipe while the steel pipe is in close contact with the surface.

Two orthopedic devices 90 are installed in the upper body 55, one each in the quarter-shaped body (56, 57), each configuration is connected to a fixed cylinder fixed to the circular body 50, a straight line It consists of a shaped plate 93 in close contact with the outer surface of the steel pipe (P) while moving.

In the apparatus of the present invention configured as described above, an automatic welding unit is configured to perform TIG (Tungsten inert gas welding) butt welding on the outer surface of the steel pipe (P).

That is, the carriage body 600 supporting the welder 300 is mounted on the circular body 50, and the welding traveling part 510 protruding in a circular ring structure is formed on one side of the circular body 50. It is provided, and the carriage 600 is configured to be equipped with a carriage 600 to weld the outer surface of the steel pipe through the welder 300 while moving along the steel pipe circumference.

The welding traveling part 510, the carriage 600, and the welding machine 300 will be described in order.

First, the welding running part 510 is provided on one side of the circular body 50 to protrude in a ring-shaped structure and a rail support plate 511, and is provided on the inner surface of the rail support plate 511 and the carriage 600. It is composed of a running rail 515 made to be moved accordingly.

The traveling rail 515 is formed in a plate structure having a predetermined width and is fixed to the rail support plate 511 by a rail fixing bolt 517.

Next, the carriage 600 rotating around the steel pipe along the traveling rail 515 as described above will be described.

The carriage 600 according to the present invention is configured to stably travel along the traveling rail 515 and is configured to adjust the welding position back and forth and up and down while supporting the welder 300.

The carriage 600 is largely composed of a traveling body 610, a frame 630, and a horizontal and vertical adjustment unit 650. Each configuration will be described.

First, the traveling body 610 will be described.

The travel body 610 is composed of a travel body 611 constituting the body and a plurality of travel rollers 613 provided on the travel body 611 to be in close contact with both sides of the travel rail 515.

The traveling rollers 613 are preferably provided with four pairs of rollers, two pairs in the front and two pairs in the rear in the moving direction of the carriage 600.

A driving motor 617 that generates driving driving force is installed below the driving body 610.

As described above, the plurality of travel rollers 613 provided on the travel body 610 are configured to be in close contact with both side surfaces of the travel rail 515 so that the carriage and the welder of the present invention operate more stably without shaking. This makes it possible to more smoothly perform welding operations requiring precision, such as TIG welding, which can greatly contribute to improving the welding quality as a whole.

Next, the frame unit 630 will be described.

The frame part 630 includes a vertical plate 631 largely connected to the traveling body part 610, and is connected in a horizontal direction to an upper portion of the vertical plate, such that a control box 635 and a wire feeding device 640 are provided at an upper portion thereof. It consists of a mounting plate 632 to be installed.

The traveling body 610, the vertical plate 631, and the mounting plate 632 are arranged in a 'c' shape around the rail support plate 511, which is disposed as shown in FIG. 5. In the structure of 600, the overall load is properly distributed from the portion supported by the travel rail 515 to ensure a stable travel support structure, and the distance that the welder 300 protrudes from the rail support plate 511 can be minimized. Will be.

On the mounting plate, a control box 635, a wire feeder 640, a horizontal vertical adjustment unit 650, and the like are mounted and installed.

The wire feeding device 640 is a feeding roller 643 on which the welding wire 641 is wound, and a feeding supply for supplying a supply force to supply the feeding wire 641 to the welding machine 300 by the feeding roller 643. In order to supply the welding wire 641 to the motor 645, the feed regulator 647 for adjusting the supply speed of the feed wire 641, and the wire clamp 380 to be described later on the feed regulator 647 side. The feed cable 648 is connected to.

Next, the horizontal vertical adjustment unit 650 will be described.

The horizontal and vertical adjustment unit 650 is installed to be supported on the mounting plate 633, so that the position of the welding torch 370 of the welder 300 can be adjusted in a horizontal (front and rear) or vertical (vertical) direction. The horizontal adjuster 651 and the vertical adjuster 655 are configured.

The horizontal adjusting part 651 and the vertical adjusting part 655 use a linear motor to move the welding machine 300 horizontally (forward and backward lengthwise) or vertically (radially in the direction of the steel pipe) like a conventional position adjusting device. It is configured to be moved to.

The regulator box 660 is installed on the front upper portion of the vertical adjustment unit 655, the regulator box 660 is connected to the control box 635 is configured to adjust the welding operation, weaving speed and the like.

Next, a welder 300 supported by the carriage 600 as described above and performing welding will be described. For reference, the configuration of the welder 300 provided in the single-body automatic welding device is similar to the configuration of the portable automatic welding device described above, the same reference numerals are assigned to the same components, and detailed description thereof will be omitted. do.

The welder 300 will be described in order from the portion connected to the vertical adjustment unit 655, the first support 310, the second support 320, the weaving operation unit 330, the fixing block 340, the rotating block ( 350, a torch clamp 360, a welding torch 370, a wire clamp 380, a sensor mounting module 390, and a contact sensor 400.

The first support 310 is formed long in the left and right direction, it is preferably formed of a rod structure made of an insulating material.

The second support 320 is fixedly installed at the center of the first support 310, and the sensor module installation 312 is formed at both sides thereof so that the sensor mounting module 390 may be installed. Referring to FIG. 18, a hole 313 is formed to fix the sensor mounting module 390, and the slit 314 is divided from the hole 313 so that the first support is divided outwardly. It is formed so that the sensor mounting module 390 can be fixed by tightening the fixing bolt 315.

The second support 320 is installed long in the front of the center of the first support 310, the weaving operation unit 330 is configured on the upper and lower portions.

The upper portion of the second support 320, the weaving motor 331 is installed, the lower portion is provided with a weaving plate 333 to enable the weaving operation.

A fixing block 340 is installed below the weaving plate 333, and a rotating block 350 is installed on the side of the fixing block 340.

The torch clamp 360 is installed in the rotary block 350, and the welding torch 370 is assembled into the rotary block 350 by inserting the torch clamp 360 and the rotary block 350 upward and downward.

One side of the torch clamp 360 is provided with a wire clamp 380 for supporting the welding wire 641 provided from the wire feeder 640 and at the same time to guide the wire supplied to the end of the welding torch 370. .

The welding torch 370 mounted on the torch clamp 360 is configured to enable the gas-tungsten arc welding method, that is, the TIG welding method, among the arc welding methods. It is configured to supply an inert gas (eg, argon gas) around the electrode, and is configured to melt and weld the welding wire 641 while generating an arc between the electrode and the welding portion during welding.

The sensor mounting module 390 is configured to be mounted on both ends of the first support 310 as described above to mount the contact sensor 400.

Here, the welding apparatus of the present invention is mainly configured to use a TIG welding method, while the gap between the welded portion of the steel pipe and the welding torch 370 is kept constant at all times due to the characteristics of the TIG welding. It is necessary to proceed welding to secure excellent welding quality. Therefore, the contact sensor 400 is used as a method of maintaining a constant gap between the weld of the steel pipe and the welding torch.

The sensor mounting module 390 to which the contact sensor 400 is mounted is configured such that the sensor mounting module 390 is installed on both sides of the first support 310, which is in contact with the welding direction of the steel pipe. It is a structure for selectively installing the type sensor 400.

The sensor mounting module 390 includes a cross adjuster 391 configured to be capable of adjusting the length of the sensor in the vertical and horizontal directions, and the first supporter coupled to the adjuster 391 in the horizontal direction. A horizontal adjustment knob 392 and a horizontal adjustment knob 392 configured to allow a position adjustment in the horizontal (front and rear) direction of the contact sensor 400 to be fixed to the end 310 are vertically coupled to the control unit 391. A vertical adjustment knob 393 configured to adjust the position of the sensor 400 in the vertical direction, a horizontal connecting portion 394 connected in a horizontal direction to an end of the vertical adjusting knob 393, and the horizontal connecting portion 394 It is configured as a sensor clamp (395) that is connected to the angle adjustable so that the contact sensor 400 is fixed.

In this case, the contact sensor 400 is a sensor that normally touches a specific object and detects a change in position thereof. As shown in the drawing, a sensor probe 401 and a signal transmission box 402 for transmitting a signal of the probe to the outside are provided. It is made to, so as to move along the portion to be welded on the outer surface of the steel pipe connecting portion serves to change the welding position of the welding torch 370 appropriately.

Of course, in the embodiment of the present invention has been described by illustrating the contact sensor 400, it is also possible to configure using a non-contact sensor 400 capable of tracking the welding position, depending on the conditions.

As described above, the touch sensor 400 uses the horizontal adjustment knob 392, the vertical adjustment knob 393, the horizontal connecting rod 394, and the connection portion of the sensor clamp 395 in the X, Y, Z, and θ directions. Position adjustment is possible. Such a contact sensor is preferably adjusted to be positioned as close as possible to the welding torch 370.

The result of detecting the contact sensor 400 while contacting the outer surface of the steel pipe is input to the main control unit through a control box 635, etc., and the horizontal control unit in the horizontal control unit according to the detection result of the contact sensor 400. By operating the adjustment unit 650 to adjust the welding position of the welding torch 370.

Meanwhile, in the above, the configuration for setting the position of the contact sensor 400 is mainly made of a manual structure. However, the horizontal adjustment knob 392 and the vertical adjustment knob 393) can also be configured to adjust the position.

It is preferable that the horizontal weaving driving device as shown in FIGS. 11 and 12 is also applied to the single body type automatic welding device according to the present invention configured as described above.

However, in the automatic welding device according to the present invention, it is also possible to apply a horizontal weaving driving apparatus having a structure different from that of the horizontal weaving driving apparatus shown in FIGS. 11 and 12.

This will be briefly described with reference to FIGS. 20 and 21.

20 and 21 are side views for explaining a horizontal weaving structure of the welding machine according to another embodiment of the present invention and a plan view seen from the D-D line direction.

In the weaving operation unit 330 according to another embodiment of the present invention, the weaving motor 331 is installed on the upper portion of the horizontal support 320, the weaving plate 333 is installed on the lower portion of the horizontal support 320. In addition, the weaving shaft 335 is formed through the horizontal support 320 to connect between the weaving motor 331 and the weaving plate 333.

The horizontal support 320 is formed with a weaving hole 321 through which the weaving shaft 335 penetrates, and the weaving hole 321 has a slot structure formed long in the movement direction of the weaving shaft 335. It is preferable.

In the weaving motor 331, a cam mechanism 337 ′ for converting the rotational motion of the motor into the weaving motion is installed so that the weaving shaft 335 ′ may be repeatedly operated.

That is, although the weaving motion of the weaving shaft is implemented by using the rack and pinion in FIGS. 11 and 12, in another embodiment of the present invention, the weaving motion of the weaving shaft 335 'may be implemented by using the cam mechanism 337'. It is configured to be.

The cam mechanism 337 'has a cam surface in contact with the weaving shaft 335', in the garden S represented by an imaginary line, both upper and lower sides in the drawing are positioned inside the garden S, and both left and right gardens. It can be configured to be positioned outside in (S). This is to allow the weaving shaft 335 'to repeatedly reciprocate repeatedly.

When the weaving shaft 335 'is driven using the cam mechanism 337' as described above, the weaving operation can be performed by driving the weaving motor 331 by rotating in one direction without the need to repeatedly drive the weaving motor 331 forward and backward. .

Of course, instead of the cam mechanism 337 ', it can also be comprised so that the weaving shaft 335 may be translated using a linear motor which produces a reciprocating motion force.

In the drawings, reference numeral 338 'denotes a motor shaft, and 336' denotes a spring providing an elastic force to the weaving shaft 335 '.

As described above, the weaving operation unit 330 according to the present invention is configured to enable the weaving operation of the welding torch 370 by the reciprocating sliding motion, thereby enabling a stable weaving operation with a simple structure.

On the other hand, the automatic welding device for connecting a steel pipe having a horizontal weaving drive device according to the present invention is not limited to the above-described portable type automatic welding device and single type automatic welding device, all welding the steel pipe connection while rotating around the steel pipe Of course, it can be applied to the automatic welding device.

1 is a perspective view showing a state in which a prior art steel pipe shaping device is mounted on a backhoe;

Figure 2 is a front view showing the internal structure of the prior art steel pipe shaping device,

3 is a side view showing a welding state in which a welding robot is added to a steel pipe orthopedic joint of the prior art;

4 is a front view of a state in which a welding robot is added to a steel pipe shaping device of the prior art,

5 is a perspective view showing a state in which a portable automatic welding device having a horizontal weaving drive device according to the present invention is mounted on a steel pipe,

Figure 6 is a detailed view of the portable automatic welding device shown in Figure 5,

7 is a front view showing a state in which the portable automatic welding device according to the present invention mounted on the steel pipe,

8 is a side view showing a state in which the portable automatic welding device according to the present invention mounted on the steel pipe,

9 is a plan view showing a state in which the portable automatic welding device according to the invention mounted on a steel pipe,

10 is a view showing a state in which the travel body is mounted on the travel rail of the present invention,

Figure 11 is a side view for explaining the welder horizontal weaving structure in the present invention,

12 is a plan view seen from the line B-B of FIG. 11,

Figure 13 is an exploded attempt to explain the front and rear rotational motion of the welding torch in the present invention,

14 is a cross-sectional view of a combined state of two blocks seen in the direction of C-C of FIG. 13;

15 and 16 is a front view of the main portion showing a rotating structure of the welding torch in the present invention,

Figure 17 is a perspective view of a single body type automatic welding apparatus according to the present invention,

18 is a detailed view of the main portion of a single body type automatic welding apparatus according to the present invention,

19 is a front view of the main part of a single body type automatic welding apparatus according to the present invention;

20 and 21 are side views for explaining a horizontal weaving structure of the welding machine according to another embodiment of the present invention and a plan view seen from the D-D line direction.

Claims (5)

A carriage rotating around the steel pipe; A support installed in the horizontal direction on the carriage or the structure supported by the carriage; A weaving motor installed at an upper portion of the support to generate a driving force; A weaving plate positioned under the support and configured to reciprocally slide under the support according to the operation of the weaving motor; A weaving shaft configured to transmit a weaving motion force from the weaving motor to the weaving plate; A weaving generator provided at the weaving motor side to allow the weaving shaft to repeat the weaving operation; And a welding torch and a welding wire mounted to the structure connected to the weaving plate, the welding torch being mounted to allow the weaving welding when welding the connection portion of the steel pipe. The structure connected to the weaving plate, the fixed block fixed to the lower portion of the weaving plate, the rotary block rotatably connected to the side of the fixing block, and the welding torch is connected in a vertical direction to the lower portion of the rotary convex And a torch clamp mounted thereon, and a wire clamp provided on the side of the torch clamp to supply the welding wire. The method according to claim 1, The support is a steel pipe (TIG) automatic welding device having a horizontal weaving drive, characterized in that the weaving hole through which the weaving shaft is formed. The method according to claim 1 or 2, The weaving generating unit includes a motor gear that rotates according to the forward and reverse rotation operation of the weaving motor, and a rack that is engaged with the motor gear and reciprocates to transfer the weaving actuation force to the weaving shaft. Steel tube TIG (TIG) automatic welding device having a. The method according to claim 1 or 2, The weaving generating unit comprises a cam mechanism for generating a weaving actuation force while rotating by the weaving motor in close contact with the weaving shaft (TIG) automatic welding device having a horizontal weaving drive device. delete

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