KR101122564B1 - Rail type automatic welding apparatus - Google Patents

Abstract

The present invention relates to a rail type automatic welding device, comprising: a rail fixed by a fixed part so as to be parallel to a welded part, a travel bogie installed to be movable along a rail, a transfer driving part for transferring the travel bogie along a rail, and a travel Tochigi government to be installed on the trolley, a welding torch clamped to the tochigo government, and a rotation driving unit for rotating the welding torch about an axis orthogonal to the conveying direction of the running cart. Therefore, the present invention can easily adjust the angle of the welding torch for accurately performing the welding operation and the multi-pass welding operation for the weld including the improved portion, to prevent the occurrence of the non-welding irrespective of the structure of the welding object, Not only can it be left to be parallel, but also it can run parallel to a welding part, and it has the effect of improving the efficiency and accuracy of a welding operation.

Rail, travel cart, conveying drive part, Tochigo government, welding torch, rotary drive part, stationary guide part

Description

Rail type automatic welding device {RAIL TYPE AUTOMATIC WELDING APPARATUS}

The present invention relates to a rail-type automatic welding device that can easily adjust the angle of the welding torch, prevents the occurrence of the non-welding portion regardless of the structure of the welding object, and can be left to be parallel to the welding portion.

In general, in the manufacture of ships or plants, due to the large amount of welding, the development of automatic welding apparatus is being actively performed to automatically perform welding. This automatic welding device welds the two base materials while moving along the weld between the two base materials.

Referring to the conventional automatic welding device with reference to the accompanying drawings as follows. As shown in FIG. 1, the rail type automatic welding device according to the related art is "butt joint automatic welding method and apparatus" of Korean Patent Laid-Open Publication No. 2002-0088114, respectively installed at both ends of a body of a gas metal arc welding device. The limit switch unit 1, the sensor unit 2 installed on one side of the carriage body, the slide unit 3 and the dog unit (not shown) and the sensor unit 2 installed on the rail unit to move the carriage And a control part 5 for controlling the gas metal arc welding device 10 by the limit switch part 1 and the dog part (not shown).

The gas metal arc welding apparatus 10 welds a longitudinal stiffener butt joint, and a straight rail portion (not shown) installed along the welding line on the longitudinal stiffener flange surface, and the welding device 10 along the rail portion (not shown). A carriage part 12 for moving the oscillator, an oscillator part 13 moving by the carriage part 12 and oscillating the welding torch, a carriage part 12, an oscillator part 13, initial welding and the main welding output. It consists of the control part 5 which sets a condition, and the welding torch part (not shown) which welds a to-be-welded object.

As described above, the automatic welding device according to the related art has a problem that it is difficult to apply to fillet welding by being used for butt welding. For example, as shown in FIG. 2, in the case of a support stool 200 for supporting the tank 300 in which the LNG is stored in the hull 300 in a carrier of the LNG By including the reinforcement (210,220) having a photographic cross section, the welding work between the reinforcement (210,220) and the hull 300 should be made, the site and the reinforcement (210, 220) connecting the support stool 200 and the hull 300 The parts connected to each other mainly consist of fillet welding, and when the automatic welding apparatus according to the prior art is used, the following problems are encountered.

First, in the case of multi-pass welding and fillet welding including an improved part, the welding torch is difficult to adjust properly even though various angles of the welding torch are required.

Second, in general, the length of one cross section is less than 1,000mm, and the structure of the inside is made of lattice, and the structure is inevitable. Cost welding is inevitable, and this causes difficulty in welding due to manual welding of the non-contacting welding at both ends.

Third, the lower portion of the welded portion of about 35mm, for example, the end portions (211,221) in the reinforcement (210,220) in Figure 2 is not only difficult to guide the running cart due to the low height, but also parallel to the welded portion Since there is no standard or tool that can be settled, the automatic welding device has a problem that it is difficult to run parallel to the weld.

The present invention has been made to solve the above problems, it is easy to adjust the angle of the welding torch for accurately performing the welding operation and the multi-pass welding operation for the weld including the improved portion, the structure of the welding object including the base material Irrespective of the occurrence of the non-welding, it can be left to be parallel to the weld as well as to run parallel to the weld has the effect of improving the efficiency and accuracy of the welding operation.

In the automatic welding device according to the present invention, in the automatic welding device, a rail fixed by a fixed part so as to be parallel to the welded part, a traveling bogie provided to be movable along the rail, and a traveling bogie moving the rail along the rail It includes a transfer driving unit, a torch chisel installed in the running bogie, a welding torch clamped to the tochigo chisel, and a rotation driving unit for rotating the welding torch about an axis orthogonal to the feeding direction of the running bogie.

The present invention is easy to adjust the angle of the welding torch for accurately performing the welding operation and the multi-pass welding operation for the weld including the improved portion, to prevent the occurrence of cost welding irrespective of the structure of the welding object, parallel to the weld Not only can it be settled, but also it can run parallel to a welding part, and it has the effect of improving the efficiency and accuracy of a welding operation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

3 to 5 are a perspective view, a plan view and a side view showing a rail automatic welding device according to the present invention, Figure 6 is a block diagram showing a rail automatic welding device according to the present invention. As shown, the rail-type automatic welding device 100 according to the present invention is a rail 110 that is fixed to be parallel to the welding portion, the running cart 120 is installed on the rail 110, the running cart 120 The transfer driving unit 130 to be transferred, the torch chisel 140 installed in the running cart 120, the welding torch 150 clamped to the torch chisel 140, and the welding torch 150 to rotate It may include a rotation driving unit 160 (shown in Figure 9).

The rail 110 is welded, for example, in the case of the support stool 200 of FIG. 2, a portion 400 to which welding is required, such as a portion where the hull 300 and the reinforcing members 210 and 220 contact each other, or a portion where the reinforcing members 210 and 220 contact each other. It is fixed by the fixing portion 111 to be located side by side.

The fixing part 111 may be installed on the brackets 112 installed at both ends of the rail 110, respectively, and may have various configurations for fixing the rail 110 to the welding part 400 side by side. When made of a material attached by a magnetic force, such as an iron plate may be made of a magnet (magnet) in order to fix using this property, in this case, the magnet may be used as well as a permanent magnet.

When the fixing part 111 is made of a magnet, a magnet chuck can be used as in the present embodiment, and the magnet chuck can switch the arrangement of magnets installed therein by manipulating the lever 111a, for example, forward and reverse rotation. The magnetic force is generated or released and detached from the base material, for example, the magnets arranged in two rows at intervals are in contact with each other where magnetic force exists, and the magnetic force is canceled and released, or the magnets in one row are magnets in other rows. The magnetic force is generated and attached to the base material by being arranged so that the offset of the magnetic force does not occur by moving in between.

The driving cart 120 is installed to be movable along the rail 110. For example, the driving cart 120 includes a plurality of guide rollers 121 and 122 that support rotationally both sides of the rail 110.

As shown in FIG. 7, the guide roller 122 positioned at one side of the rail 110 among the guide rollers 121 and 122 may elastically support the side of the rail 110 by the elastic member 123. As a result, the travel cart 120 may travel stably and accurately along the rail 110. On the other hand, the elastic member 123 may allow the guide roller 122 to elastically support the side of the rail 110 by providing an elastic force to the roller installation member 124, the guide roller 122 is installed.

The transfer driving unit 130 is a rack (131) and a rack (131) continuously formed in the longitudinal direction on the upper surface of the rail 110, for example, in order to transfer the running cart 120 along the rail (110). A pinion 132 gear-coupled thereto and a transfer motor 133 (FIG. 7) installed on the traveling cart 120 to rotate the pinion 132, but are not limited thereto. Various driving means such as a linear motor or a cylinder for linearly reciprocating the 120 from the rail 110 may be used.

The transfer motor 133 may be configured to transmit the rotational force to the pinion 132 using bevel gears 134 and 135 for converting the rotational force to a right angle to an obtuse angle, as shown in FIG. In this case, a rotation force may be transmitted by using a worm and a worm wheel not shown in any one of the bevel gears 134 and 135.

Tochigo government 140 is fixed to the welding torch 150 by being installed in the running cart 120 will be described later.

The welding torch 150 is clamped to the torch fixing unit 140 and is supplied to the welding core from the outside to the welding unit 400 where the base material, for example, the hull 300 and the reinforcing members 210 and 220 shown in FIG. 2 intersect. Perform welding. In this case, the hull 300 and the reinforcement materials 210 and 220 cross each other, or the reinforcement materials 210 and 220 cross each other to perform fillet welding, and an improvement angle may be formed in the welding part 400.

The rotation driving unit 160 rotates the welding torch 150 about an axis orthogonal to the traveling direction of the traveling cart 120. For example, the traveling cart 120 is transported along an upper side of the rail 110 that is horizontally installed. If the welding torch 150 can be rotated about a vertical axis.

As shown in FIG. 9, the rotation driving unit 160 includes a rotation shaft 161 provided on the rotation member 141 of the tochigo government 140, and a rotation shaft 161 mounted on the traveling cart 120. It may include a reducer 162 is installed, and a rotating motor 163 is installed on the travel cart 120 to apply a rotational force to the reducer 162. Therefore, when the rotating motor 163 is driven, the rotational speed of the rotating motor 163 is reduced by the reducer 162 and transmitted to the rotating shaft 161 to rotate the welding torch 150 clamped to the torch fixing unit 140. Let's do it.

The reducer 162 may be used a harmonic drive reducer for precise deceleration, in addition to the shock reducer that decelerates by a combination of a worm and a worm wheel, a reducer of various other configurations may be used.

8 and 9, the torch fixing unit 140 is slidable in a rotational radial direction to the rotating member 141 and the rotating member 141 fixed to the rotating shaft 161 of the rotary driving unit 160. In addition to the coupled to the welding torch 150 may be provided with a guide member 142 and a guide pin 143 provided on the guide member 142.

The rotating member 141 is fixed to the rotating shaft 161 to rotate together with the rotating shaft 161 on the driving cart 120.

The guide member 142 is provided with a sliding coupling portion 142a slidingly coupled to the guide protrusion 141a formed in the longitudinal direction in the rotation member 141, but is not limited thereto, and the guide member 142 and the rotating member ( 141 may be coupled to be slidable by various methods.

The guide pin 143 is provided perpendicular to one lower surface of the guide member 142 and is inserted into the guide slit 125 formed in the travel cart 120.

The driving cart 120 has a welding torch 150 installed in the guide member 142 when the rotating member 141 is rotated together with the rotation shaft 161 by inserting the guide pin 143 into a linear welding part 400 (FIG. 2). A guide slit 125 for guiding the movement of the guide member 142 to move along the) is formed. That is, the guide slit 125 guides the movement of the guide member 142 in the rotational radial direction by guiding the movement of the guide pin 143 when the rotating member 151 rotates, and thus, the welding torch 150 The ends are aligned to aim the weld 400 while maintaining a constant distance from the weld 400.

The torch chisel 140 may be directly fixed to the welding torch 150 to the guide member 142, but is not limited to this, fixed module 144 is coupled to the guide member 142 to the welding torch 150 is fixed. It is possible to fix the welding torch 150 via the).

As shown in FIG. 10, the fixing module 144 is coupled to the guide member 142 and the first slider 144a for sliding the welding torch 150 along the length direction of the guide member 142. A second slider 144b and a second slider 144b that are coupled to the first slider 144a and rotate the welding torch 150 about an axis 144d parallel to the travel direction of the travel vehicle 120. A torch clamp 144c coupled to and fixed to the welding torch 150 may be included.

The first slider 144a has a plurality of gears arranged therein, thereby converting the rotational force of the external rotary knob 144e into a linear motion, such that the welding torch 150 having the second slider 144b fixed to the torch clamp 144c. And slide along the longitudinal direction of the guide member 142.

The second slider 144b has a plurality of gears inside, for example, a worm and a worm wheel, so that the torch clamp 144c is driven with the welding torch 150 by using the rotational force of the external rotary knob 144f. It is rotated about an axis 144d parallel to the moving direction of 120.

The torch clamp 144c has a groove (not shown) for mounting the welding torch 150, and the welding torch 150 is fixed to the groove by tightening the rotary knob 144g.

The torch fixing unit 140 is a welding torch 150 is aimed at the linear weld 400 (shown in Figure 2) properly to obtain a good quality welds for this purpose by loosening the rotary knob (144g) torch clamp 144c The welding torch 150 is fixed by inserting the welding torch 150 between the grooves of the torch and tightening the rotating knob 144g, and rotating knobs 144e and 144f of the first and second sliders 144a and 144b. By using the welding torch 150 can be aimed in a state located at a desired distance from the weld 400 (shown in Figure 2).

Since the welding torch 150 should be disposed approximately perpendicular to the linear welding part 400 (shown in FIG. 2), the welding efficiency is good, and thus the groove of the torch clamp 144c is formed to be inclined downward and welded as in this embodiment. The torch 150 may form a groove such that the torch 150 has an inclination of approximately 45 degrees with respect to the horizontal plane of the base material.

The rail type automatic welding device 100 according to the present invention may further include a first stationary guide part 171 to guide the parallel installation to the welding part 400 (shown in FIG. 2).

The first stationary guide part 171 is installed on the rail 110 and supported by the base material, for example, the reinforcing members 210 and 220 illustrated in FIG. 2, so that the rail 110 is guided to be parallel to the welding part 400. For example, it may include a plurality of support (171a) that is fixed to protrude forward at both ends of the rail 110, respectively, and is provided on the rail 110 rather than the traveling cart 120 as in this embodiment, the traveling cart ( Interference with the surroundings due to the conveyance of 120) can be prevented.

The support 171a is fixed to the brackets 112 provided at both ends of the rail 110 so as to protrude forward from the welding part 400 upwardly to avoid interference with the welding torch 150 during the welding operation. The vertical surface may be formed to support a portion spaced upward from the welder 400.

On the other hand, the rail-type automatic welding device 100 according to the present invention, when the base material, for example, the lower portion (211, 221) of the height of the reinforcing members (210, 220) of Figure 2 exists only the first stationary guide portion 171 rail When the installation 110 can not guide the parallel with the weld 400 may further include a second stationary guide portion 172 to improve this.

The second stationary guide part 172 is installed to protrude forward or to the rear at the lower portion of the driving cart 120, and the lower portion of the base material, for example, the reinforcing members 210 and 220 when protruded forward 211,221 By being fully supported, the rail 110 is guided to be parallel to the weld 400. On the other hand, the extent to which the second stationary guide part 172 protrudes forward is the rail 110 is welded 400 when the second stationary guide part 172 is supported in contact with the base material together with the first stationary guide part 171. 2 is parallel with ().

The second stationary guide 172 may be installed to protrude or return to the front and rear of the travel cart 120 by a sliding method or a bending method. For example, as shown in FIG. 4, the second stationary guide 172 may be disposed at a lower front end of the travel cart 120. By being rotatably coupled, it is installed to protrude forward or to rotate backward to return to the rear, and projections or grooves can be formed on the rotational coupling portion of the driving cart 120 to limit the rotation angle, and easily Rotating knob 172a may be installed on the upper surface to rotate.

On the other hand, the rail-type automatic welding device 100 according to the present invention is a remote control unit 181 for inputting a drive signal by the user's operation so as to be remotely controlled from the outside, and converts the input drive signal into a radio signal and transmits it. And, the receiving unit 182 for receiving the radio signal output from the remote control unit 181, the transfer driver 130, the welding torch 150 and the rotary driver 160, etc. in accordance with the radio signal received by the receiver 182 It may include a control unit 183 installed in the driving cart 120 to control each.

The remote control unit 181 may have a plurality of switches not shown in order to input a signal for driving the rail type automatic welding device 100. For example, the remote control unit 181 may turn on / off the power. Power switch, start switch to start welding work, stop switch to stop welding work, welding switch to select welding and non-welding, welding seam supplied to welding torch 150 by welding seam and welding part 400 (see FIG. 2). Inching switch that can adjust the distance between), the speed switch for controlling the moving speed of the running cart 120, the welding torch 150 to maintain a fixed posture or the position detection unit that the welding torch 150 will be described later Rotation switch for selecting to rotate automatically by the detection of (186), the rotation direction switch for selecting the rotation direction of the welding torch 150 by the rotation driving unit 160, and the like by the operation of the switch A transmission section (not shown) for converting the signal to a radio signal may further include.

The remote control unit 181 and the receiving unit 182 may use various wireless transmission and reception methods, and may wirelessly communicate using, for example, a radio frequency (RF) signal.

Meanwhile, the rail type automatic welding device 100 may further include a casting part 184 provided in the traveling cart 120 to directly input a driving signal.

The casting operation unit 184 is provided in the driving cart 120 so that a driving signal is input by a user's manipulation, and the control unit 183 performs control by receiving the input driving signal to the control unit 183. Start switch to start the stop, stop switch to stop the welding operation, welding switch to select the welding and non-weld, the distance between the welding seam and the welding portion 400 (shown in Figure 2) by drawing the welding seam supplied to the welding torch 150 It may have an inching switch that can be adjusted, a speed switch for adjusting the moving speed of the traveling cart 120.

The control unit 183 may further include a selection switch 185 for selecting to operate only by one of the casting operation unit 184 and the remote operation unit 181.

For example, a toggle switch may be used as the selection switch 185. The remote control unit 181 or the casting operation unit 184 may be selected by selecting whether the input of the driving signal is the casting operation unit 184 or the remote operation unit 181. It is possible to prevent confusion or malfunction of the control unit 183 by the signal of), for example, may be provided in the casting operation unit 184.

On the other hand, it may further include a position sensing unit 186 provided in the traveling cart 120 to detect that the traveling cart 120 is located on one side of the welding unit 400 and outputs a detection signal to the controller 183.

The position detecting unit 186 is installed on the left and right sides of the traveling cart 120, respectively, and detects that the traveling cart 120 is located at both ends of the welding unit 400, and outputs a detection signal to the controller 183. And first and second sensing units 186a and 186b (shown in FIG. 4), which may include a proximity sensor to detect that the traveling cart 120 is located at both ends of the welding unit 400. The travel cart 120 is positioned at both ends of the weld 400 by recognizing a dog installed on the rail 110 or a peripheral structure such as reinforcing members 210 and 220 positioned at both ends of the weld 400. It may be configured to detect that.

The control unit 183 receives the detection signal output from the position detecting unit 186 and recognizes that the traveling cart 120 is located at one side or the opposite side of the welding unit 400, in which case the traveling cart 120 occupies Due to the space, the welding part cannot be performed by the welding torch 150, so that the welding part 150 is rotated by controlling the rotating motor 163 of the rotation driving part 160 to solve this problem. The welding work should be carried out to the end of. On the other hand, the control unit 183 may control the transfer motor 133 of the transfer drive unit 130 so that the driving cart 120 stops at a predetermined position when receiving a signal from the position detection unit 186.

Referring to the operation of the rail-type automatic welding device according to the present invention having such a configuration as follows.

In order to weld the welding operation, for example, the support stool 200 illustrated in FIG. 2 to the hull 300, the reinforcing members 210 and 220 may be fillet welded to the hull 300 or the fillet welding of the reinforcing members 210 and 220 may be performed. When the first stationary guide portion 171 is supported on the vertical surface of the reinforcing members 210 and 220 to fix the rail 110 to be parallel to the welding portion 400 using the fixing portion 111. At this time, the first stationary guide part 171 supports the high positions of the reinforcing members 210 and 220 so as to deviate from the space where the welding torch 150 works, thereby being supported by the lower portions 211 and 221 of the reinforcing members 210 and 220. If not, the second stationary guide part 172 may protrude forward to be supported by the lower portions 211 and 221 of the reinforcing members 210 and 220 so that the rail 110 may be installed to be parallel to the weld part 400. After the installation of the), the second stationary guide part 172 is rotated to the rear so as not to interfere with the running of the traveling cart 120.

When the rail 110 is fixed to be parallel to the welding unit 400, the welding torch 150 moves the running cart 120 along the rail 110 by the operation of the remote operation unit 181 or the casting operation unit 184. The welding operation on the welded portion 400 is performed by the driving and the supply of the weld seam.

At this time, both ends of the welding bogie 120, that is, the transfer of the traveling bogie 120 can no longer proceed, so that the holding portion that can not be welded to the welding torch 150 in a fixed posture. The controller 183 detects the arrival through the first or second detectors 186a and 186b and receives a detection signal output from the first or second detectors 186a and 186b. By rotating the rotary motor 163 of the welding torch 150 together with the torch fixing unit 140 to rotate toward the end of the welding portion 400, that is, the end of the welding portion 400, Minimize the weld.

On the other hand, when the welding torch 150 is rotated by the drive of the rotary motor 163 in a fixed position as shown in Figure 11, as shown in Figure 12, the guide pin 143 to the guide slit 125 In addition, the guide member 142 is slid from the rotating member 141 so that the end of the welding torch 150 moves along the welding part 400 to perform a uniform welding operation on the entire welding part 400. .

As such, when the traveling cart 120 detects the moment when the traveling unit 120 meets or is adjacent to the end or peripheral member of the base material by the position detecting unit 186, the traveling cart 120 is no longer traveling due to the structural characteristics of the welding object. Even in this difficult stop state, the welding torch 150 may perform a rotation operation so that welding work may be performed to both ends of the welding part 400.

As such, the rail-type automatic welding device 100 of the present invention minimizes the mechanical structure required for rotation and reduces the weight to allow welding in a narrow area with many obstacles such as the support stool 200. Of course, the first and second stationary guide parts 171 and 172 on the rail 110 may easily allow the welding torch 150 to remain mechanically parallel to the welding unit 400 so that the traveling cart 120 may be maintained. By improving the quality of the welding operation by preventing the aiming position of the welding torch 150 is shifted during the driving.

In addition, by using the remote control unit 181 to enable remote control to facilitate the welding operation without contacting the running cart 120 directly in a narrow area. On the other hand, by allowing the selection switch 186 to select either the remote control unit 181 or the casting operation unit 184 by the control right by the control unit 183 to prevent the malfunction due to the confusion of the drive signal to improve the reliability of the operation It improves and enables the drive through the casting operation unit 184 even in the case where the remote operation unit 181 is broken or other operation is impossible.

In addition, the control unit 183 and the power supply unit 185 may be divided and disposed in a portion excluding the region in which the welding torch 150 rotates in the traveling cart 120 to minimize the space protruding to the rear of the traveling cart 120. This can avoid interference to the back.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. And will be included in the described technical idea.

1 is a view showing a rail automatic welding device according to the prior art,

2 is a perspective view showing a support stool installed by welding to the hull,

3 is a perspective view showing a rail automatic welding device according to the present invention,

Figure 4 is a plan view showing a rail automatic welding device according to the present invention,

5 is a side view showing a rail type automatic welding device according to the present invention,

6 is a block diagram showing a rail automatic welding device according to the present invention,

7 is a bottom view showing the main portion of the rail-type automatic welding device according to the present invention,

8 is a plan view showing the tochigo government of the rail-type automatic welding device according to the present invention,

Figure 9 is a perspective view showing the main portion of the tochigo government of the rail-type automatic welding device according to the present invention,

10 is a perspective view showing a fixing module of a rail type automatic welding device according to the present invention;

11 and 12 are views for explaining the operation of the torch portion of the rail-type automatic welding apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110: rail 111: fixed portion

111a: Lever 112: Bracket

120: driving cart 121,122: guide roller

123: elastic member 124: roller mounting member

125: guide slit 130: feed drive unit

131: rack 132: pinion

133: feed motor 134,135: bevel gear

140: Tochigo government 141: rotating member

141a: guide protrusion 142: guide member

142a: sliding coupling 143: guide pin

144: fixed module 144a: first slider

144b: second slider 144c: torch clamp

144d: shaft 144e, 144f, 144g: rotary knob

150: welding torch 160: rotary drive unit

161: rotating shaft 162: reducer

163: rotary motor 171: first stationary guide portion

171a: Support 172: 2nd political guide

172a: rotary knob 181: remote control unit

182: receiver 183: controller

184: casting unit 185: power unit

186: position detecting unit 186a: first detecting unit

186b: second detection unit 200: support stool

210,220: Stiffener 300: Hull

400: weld

Claims (16)

In the automatic welding device, A rail fixed by the fixing part to be parallel to the welding part, A traveling cart installed to be movable along the rail; A transfer driving unit for transferring the traveling cart along the rails; Tochigo government installed in the running cart, A welding torch clamped to the torch portion, A rotation driving unit for rotating the welding torch about an axis orthogonal to the conveying direction of the traveling cart; A first stationary guide part installed on the rail and supported by a base material to guide the rail to be parallel to the welding part; Rail type automatic welding device comprising a. delete The method of claim 1, The first stationary guide unit, A plurality of supports which are installed at both ends of the rail and protrude forward, and are formed to support a portion spaced upwardly from the welding portion among the vertical surfaces of the base material. Rail type automatic welding device comprising a. The method of claim 3, wherein The rail is Brackets to which the support is fixed are installed at both ends, and the rail-type automatic welding device is installed in each of the fixing portion on the bracket. The method according to claim 1 or 4, The fixing part, Rail type automatic welding device made of magnet. The method of claim 1, The running cart, And a plurality of guide rollers each rotatably supporting both sides of the rail, and a guide roller positioned on one side of the rail elastically supports the rail by an elastic member. 7. The method according to claim 1 or 6, A second stationary guide part which is installed to protrude forward or to the rear of the lower portion of the traveling cart and is supported by the base material when protruded forward to guide the rail to be parallel to the welding part; Rail-type automatic welding device further comprising. The method of claim 7, wherein The second stationary guide unit, Rail-type automatic welding device is rotatably coupled to the lower portion of the running cart, the rotary knob is installed on the upper surface. The method of claim 1, The rotary drive unit, A rotating shaft provided in the tochigo government; A reduction gear mounted to the rotating shaft and installed in the traveling cart; Rotating motor is installed in the traveling cart to apply the rotational force to the reducer Rail type automatic welding device comprising a. The method of claim 9, The Tochigo government, A rotating member fixed to the rotating shaft; A guide member coupled to the rotation member so as to be slidable in a rotational radial direction, the guide member having the welding torch installed therein; A guide pin provided on the guide member, The running cart, And a guide slit is formed to guide the movement of the guide member by inserting the guide pin to move the welding torch along the welding part when the rotating member is rotated. 11. The method of claim 10, The Tochigo government, It further comprises a fixed module coupled to the guide member is fixed to the welding torch, The fixed module, A first slider coupled to the guide member and sliding the welding torch along a length direction of the guide member; A second slider coupled to the first slider and rotating the welding torch about an axis parallel to a conveying direction of the travel cart; A torch clamp coupled to the second slider to fix the welding torch Rail type automatic welding device comprising a. The method according to any one of claims 1 to 6, or 9 to 11, A position sensing unit installed at each of the traveling trolleys and detecting a position of the traveling trolley on one side of the welding unit and outputting a detection signal; Receiving a detection signal output from the position detection unit, the control unit for controlling the rotation driving unit so that the welding torch to the welding operation to the end of the welding portion Rail-type automatic welding device further comprising. 13. The method of claim 12, The position detection unit, First and second detectors respectively installed on the left and right sides of the driving cart and detecting the driving carts at both ends of the welding unit and outputting a detection signal to the controller; Rail type automatic welding device comprising a. The method of claim 1, A remote control unit for inputting a driving signal by a user's operation, converting the input driving signal into a wireless signal and transmitting the same; A receiving unit for receiving a radio signal output from the remote control unit; A control unit installed in the traveling cart so as to control the transfer driving unit, the welding torch, and the rotary driving unit, respectively, according to the radio signal received by the receiving unit. Rail-type automatic welding device further comprising. The method of claim 14, The casting operation unit is provided in the traveling cart so that a driving signal is input by a user's operation, and the control unit performs control by receiving the input driving signal to the control unit. Rail-type automatic welding device further comprising. The method of claim 15, A selection switch selected by the controller to operate only by one of the casting operation part and the remote operation part; Rail-type automatic welding device further comprising.

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