KR101613648B1 - Automatic welding apparatus - Google Patents

Abstract

The present invention relates to a first unit for allowing a swinging motion in all directions along a moving direction parallel to a ring-shaped groove portion formed on an outer side of an end edge of each of two cylindrical structures arranged perpendicularly to the ground; A second unit coupled to the first unit and moving along the ring-shaped groove; A third unit coupled to the first unit, the third unit interlocking with the rolling contact of the first unit and moving along the groove to weld the groove; A movable support rail assembly detachably coupled to an upper side of the two structures and having ring-shaped first and second rails facing the outer circumferential surface of the structure at both edges of the upper and lower ends; And a movable carriage assembly to which the first unit is detachably coupled, the movable carriage assembly being detachably coupled to the first and second rails, The present invention relates to an automatic welding apparatus capable of ensuring reliable and high-quality welding along the abutting end portions of two columnar structures each of which is made of a metal material.

Description

[0001] AUTOMATIC WELDING APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic welding apparatus, and more particularly, to an automatic welding apparatus capable of ensuring reliable and high quality welding along end portions of two columnar structures, will be.

In the construction of the foundation pile (pile), it is necessary to connect the joint of the end of the file according to the depth at which the file is penetrated.

First, the head part of the intruded file is welded with additional files, and when a file longer than the standard is needed, the ends of the files are welded to each other.

At this time, welding may be performed manually by an operator or through an automatic welding apparatus.

Automatic welding equipment does not require welding expertise and has the advantage of achieving uniform bonding quality.

As a background of the present invention, there is proposed a "file welding apparatus for grounding construction" (hereinafter referred to as Prior Art 1) of Japanese Patent Registration No. 10-1160251.

However, according to the prior art 1, since centering alignment work performed before joining between files can not be performed, misaligned welding can be performed.

In the prior art 1, there is no means for horizontally aligning the torch drive unit, and welding defects may be caused where welding is performed out of the predetermined welding portion.

In the prior art 1, the installation position of the guide rollers in rolling contact with the guide rails is increased, the number of parts is increased, the power transmission structure is complicated, and the manufacturing cost is increased.

In view of the above, Patent Document 10-1285462 entitled " File Automatic Welding Apparatus for Easy Disassembly and Assembling and File Joining Method Using the Same "(hereinafter referred to as Prior Art 2) has been proposed.

However, in the prior art 2, it is difficult to precisely weld along the groove formed by the head of the intruded file and the head of the additional butted file when performing the automatic welding. Particularly, when the welding torch T is mounted on the rotary transfer table 30, There is a problem that welding is performed to a portion other than the groove portion.

Patent No. 10-1160251 Patent No. 10-1285462

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an automatic welding apparatus capable of ensuring reliable and high quality welding along the end portions of two columnar structures, .

In order to achieve the above object, according to the present invention, there is provided a ring-shaped groove portion which is formed on an outer side of an end edge of each of two columnar structures arranged perpendicularly to the ground, A first unit for permitting a swinging motion; A second unit coupled to the first unit and moving along the ring-shaped groove; A third unit coupled to the first unit, the third unit interlocking with the rolling contact of the first unit and moving along the groove to weld the groove; A movable support rail assembly detachably coupled to an upper side of the two structures and having ring-shaped first and second rails facing the outer circumferential surface of the structure at both edges of the upper and lower ends; And a movable bogie assembly detachably coupled to the first and second rails, wherein the first and second rails are detachably coupled to the first and second rails to transmit and receive a driving force. can do.

Here, the first unit may include a moving support unit rotatably coupled to the moving vehicle assembly and coupled to the second unit and the third unit, and a second support unit coupled to the moving support unit, And an elastic support portion for allowing the elastic support portion to be inserted.

The moving support unit includes a pivot connection rod rotatably coupled to the moving pallet assembly so as to be adjustable up and down, and a plurality of support pieces connected to the end of the pivot connection rod and vertically spaced apart from each other, And a first support bracket coupled to one side of the support piece and supporting the third unit, wherein the elastic support portion is disposed between the plurality of support pieces, and the second unit is coupled to the support piece .

The second unit may include a second support bracket detachably coupled to the first unit, a roller rotatably mounted on the second support bracket, and a roller protruding at a predetermined height along an outer circumferential surface of the roller, And a guide blade contacting the ring-shaped groove portion.

The automatic welding apparatus includes a positioning piece that is detachably coupled to an outer side of the movable support rail assembly and an inner side of the movable support rail assembly facing the outside of the movable support rail assembly so as to face the positioning piece. And a position detection sensor for detecting the position of the movable member.

The automatic welding apparatus further includes a centering band assembly which is in contact with an outer circumferential surface of each of the two structures and is detachably coupled to the ring-shaped groove so that the mounting position of the movable support rail assembly can be determined on the upper side .

The automatic welding apparatus may further include a ring-shaped rack gear having a plurality of gears along an outer circumferential surface of a second rail of the movable support rail assembly, a ring gear rotatable in one direction engaging with the rack gear, A drive pinion mounted on an inner side of the movable bogie assembly facing the outside of the movable support rail assembly and coupled to the drive pinion at an end of the drive bogie, And further comprising:

The movable support rail assembly may include a plurality of movable support rail assemblies which are mounted at equal intervals on the inner surface of the movable support rail assembly so as to face the outer circumferential surface of the upper structure of the two structures and which are in contact with the outer circumferential surface of the upper structure, And a magnet which is embedded in the close contact piece and generates a magnetic force with respect to an outer circumferential surface of the upper structure which is a metal material.

The movable support rail assembly may include a plurality of movable support rail assemblies which are mounted at equal intervals on the inner surface of the movable support rail assembly so as to face the outer circumferential surface of the upper structure of the two structures and which are in contact with the outer circumferential surface of the upper structure, And a resilient member embedded in the close fit fastener and acting to exert an elastic repulsive force in a direction away from the outer circumferential surface of the upper structure.

Also, the moving truck assembly includes a bogie body which is spaced apart from the outer circumferential surface of the movable support rail assembly and moves in one direction while receiving a driving force,

A pair of first moving rollers disposed on both sides of the upper portion of the bogie main body and in rolling contact with the first rails, a support piece rotatably coupled to a lower end edge of the bogie main body, A pair of second moving rollers which come into rolling contact with the second rails and whose both ends are connected to the pair of first moving rollers and the pair of second moving rollers, And a spring for exerting an elastic force to pivot in the direction of approaching.

According to the present invention having the above-described structure, it is possible to securely weld the end portions of two columnar structures, which are metallic materials arranged in a vertical shape, with good quality along the abutting portions.

In particular, the present invention allows the first unit to swing in the up, down, left, and right directions as it moves in one direction along the movable support rail assembly of the mobile bogie assembly while allowing the second unit to swing the ring- And the third unit performs the welding, so that welding defects can be minimized compared to the prior art, and welding products of excellent quality can be obtained.

In addition, since the first, second, and third units including the controller, the movable truck assembly, and the movable support rail assembly are all separated and fastened together, the present invention facilitates transportation and maintenance, Can be grasped immediately.

FIG. 1 is a perspective view showing a state in which an automatic welding apparatus according to an embodiment of the present invention is installed in a structure and is ready for welding. FIG.
Fig. 2 is a partially enlarged perspective view of Fig. 1. Fig. 2 (a) shows the overall structure of a second unit which is a main part of the automatic welding apparatus according to an embodiment of the present invention, Fig. 2 (b) Showing the details of the groove formed by the groove
3 is a perspective view illustrating the structure of a movable support rail assembly, which is a main part of an automatic welding apparatus according to another embodiment of the present invention.
FIG. 4 is a perspective view showing the overall structure of a mobile bogie assembly, which is a main part of an automatic welding apparatus according to an embodiment of the present invention, as seen from an inner side facing an outer peripheral surface of a movable support rail assembly
5 (a) and 5 (b) illustrate a process of mounting a movable bogie assembly, which is a main part of an automatic welding apparatus according to an embodiment of the present invention, Respectively, after mounting.
FIG. 6 is a perspective view illustrating the overall structure of a centering band assembly for temporarily installing and separating a structure in order to align the automatic welding apparatus according to an embodiment of the present invention,

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments described below, but may be embodied in various other forms.

The present embodiments are provided so that the disclosure of the present invention is thoroughly disclosed and that those skilled in the art will fully understand the scope of the present invention.

And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

In addition, throughout the specification, like reference numerals refer to like elements, and the terms (mentioned) used herein are intended to illustrate the embodiments and not to limit the invention.

In this specification, the singular forms include plural forms unless the context clearly dictates otherwise, and the constituents and acts referred to as " comprising (or having) " do not exclude the presence or addition of one or more other constituents and actions .

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs.

Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

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

1 is a perspective view showing a state in which an automatic welding apparatus according to an embodiment of the present invention is installed in a structure and is ready for welding.

Fig. 2 is a partially enlarged perspective view of Fig. 1. Fig. 2 (a) shows the overall structure of a second unit which is a main part of the automatic welding apparatus according to an embodiment of the present invention, Fig. 2 (b) Fig. 7 is a view showing the details of the groove formed by the groove.

3 is a perspective view illustrating the structure of a movable support rail assembly, which is a main part of an automatic welding apparatus according to another embodiment of the present invention.

FIG. 4 is a perspective view showing the overall structure of a mobile bogie assembly, which is a main part of an automatic welding apparatus according to an embodiment of the present invention, and is viewed from an inner side facing an outer circumferential surface of a movable support rail assembly.

5 (a) and 5 (b) illustrate a process of mounting a movable bogie assembly, which is a main part of an automatic welding apparatus according to an embodiment of the present invention, And Fig.

6 is a perspective view showing the overall structure of a centering band assembly for temporarily installing and separating a structure in order to align the automatic welding apparatus according to an embodiment of the present invention with a horizontal state.

It can be seen that the present invention is a structure including the first unit 100, the second unit 200, the third unit 300, the movable support rail assembly 400, and the movable carriage assembly 500 as shown in the drawing .

The first unit 100 is disposed along a direction in which the end portions of two cylindrical structures 610 and 620, which are arranged perpendicular to the paper surface, are parallel to the ring-shaped groove 630, Allowing for oscillation in all directions.

The second unit 200 is coupled to the first unit 100 and moves along the ring-shaped groove 630.

The third unit 300 is coupled to the first unit 100 and welds the groove 630 while moving along the groove 630 in conjunction with the rolling contact of the first unit 100. [

The movable support rail assembly 400 is detachably coupled to the upper side of the two structures 610 and 620 and has ring-shaped first and second rails 610 and 620 facing the outer circumferential surfaces of the structures 610 and 620, 401, and 402, respectively.

The movable truck assembly 500 is detachably coupled to the first and second rails 401 and 402 at both ends thereof so that the first unit 100 is detachably coupled to the first and second rails 401 and 402 by receiving driving force.

Therefore, while the first unit 100 allows the first unit 100 to swing in the up, down, left, and right directions as the mobile truck assembly 500 rotates, The first unit 630 is precisely guided, and the third unit 300 performs welding, thereby minimizing welding defects and obtaining a welding product of good quality.

It is needless to say that the present invention can be applied to the embodiment having the above-described configuration, and the following various embodiments can be applied.

First, it is understood that the ring-shaped groove 630 is formed by the first inclined plane 631 and the second inclined plane 632 as shown in FIG. 2 (b).

The first inclined plane 631 is formed in a ring shape such that the first inclined plane 631 is inclined downward from the outer side of the lower end edge of the first structure 610, which is a columnar shape disposed on the upper side.

The second inclined surface 632 is formed in a ring shape such that the second inclined surface 632 is sloped upward from the outer side of the upper end edge of the cylindrical second structural body 620 which is disposed at the lower side and abuts against the first structure 610.

The groove unit 630 forms a V-shaped cross section as a whole so that the second unit 200 to be described later guides the welding of the third unit 300 accurately.

Here, the third unit 300 may include a welding torch detachably coupled to the first unit 100, and a gas supply source for welding, though not specifically shown.

1, the first unit 100 is provided with a space and an area in which the second unit 200 and the third unit 300 are mounted. The movable unit 110 and the elastic unit 120 ). ≪ / RTI >

The movable support 110 is rotatably coupled to a mobile carriage assembly 500 to be described later and is provided to provide space and an area in which the second unit 200 and the third unit 300 are coupled.

The elastic supporting part 120 is coupled to the moving support part 110 to elastically deform the supporting part 120 to allow the elastic supporting part 120 to rock in all directions.

Specifically, the movable supporting portion 110 includes a pivot connecting rod 111 rotatably coupled to the moving pallet assembly 500 while being adjustable up and down, and a pivot connecting rod 111 coupled to an end of the pivot connecting rod 111, And a first support bracket 113 which is coupled to one side of the support piece 112 and supports the third unit 300. [

It will be understood that the elastic support portion 120 is disposed between the plurality of support pieces 112 and the second unit 200 to be described later is coupled to the support piece 112. [

At this time, the elastic supporting portion 120 may be a plurality of spring members such as a coil spring, a leaf spring, and the like disposed between the supporting pieces 112.

2 (a), the second unit 200 includes a second support bracket 210 detachably coupled to the first unit 100 and a second support bracket 210 rotatable with respect to the second support bracket 210. [ And a guide blade 230 protruding at a predetermined height along the outer circumferential surface of the roller 220 and having an edge in contact with the ring-shaped groove 630.

Accordingly, the guide blade 230 can guide the accurate welding position to the third unit 300 while rolling on the groove portion 630 having a V-shaped cross section.

3, the movable support rail assembly 400 provides a space and an area for mounting the movable rail assembly 500 to be described later. Referring to FIG. 3, the first and second rail split members 410, 410, 420 and 420 ), A rail connecting piece 430, and a rail fastening fitting 450.

The first rail dividing pieces 410 and 410 are divided into two arcs and one ends of the first rail dividing pieces 410 and 410 are detachably coupled to each other and are coupled to each other to form a ring-shaped first rail 401.

The second rail dividing pieces 420 and 420 are disposed under the pair of first rail dividing pieces 410 and 410 and are divided into two arcuate ones so that one ends of the second rail dividing pieces 420 and 420 are detachably coupled to each other, Thereby forming a ring-shaped second rail 402.

Both ends of the rail connecting piece 430 are connected to the first rail dividing pieces 410 and 410 and the second rail dividing pieces 420 and 420. The first rail dividing pieces 410 and 410 and the second rail dividing pieces 420, and 420, respectively.

The rail fastening tool 450 includes a rail connecting piece 430 disposed adjacent to the other end of each of the first rail dividing pieces 410 and 410 and the second rail dividing pieces 420 and 420 among the plurality of rail connecting pieces 430 ) To each other.

Meanwhile, the moving support rail assembly 400 may further include an attachment fixing piece 432 for enhancing the close fixing force to the first structure 610.

The tight fitting piece 432 is equidistantly mounted on the inner surface of the movable support rail assembly 400 so as to face the outer circumferential surface of the upper structure 610 of the two structures 610 and 620 and is fixed to the outer circumferential surface of the upper structure 610 And a plurality of members made of an elastic material that come into contact and come into close contact with each other.

Here, the fastening fixing pieces 432 are respectively disposed on the rail connecting pieces 430 arranged at equal intervals along the forming direction of the moving support rail assembly 400.

In this case, the present invention may further include a magnet (not shown) built in the close contact fixing piece 432 for generating a magnetic force with respect to the outer circumferential surface of the upper structure 610, which is a metal material.

Further, the present invention further includes a elastic member (not shown in the drawings) that is embedded in the close contact fixing piece 432 to further tighten the close fixing force and exerts an elastic repulsive force in a direction away from the outer peripheral surface of the upper structure 610 Of course it is possible.

Meanwhile, the moving truck assembly 500 moves along the movable support rail assembly 400 and moves in one direction so that the third unit 300 coupled to the first unit 100 can perform welding at a constant speed It can be understood that the structure includes the bogie main body 510, the first and second moving rollers 521 and 522, the receiving piece 530, and the spring 540, as shown in Figs. 1, 4 and 5.

The bogie body 510 is spaced apart from the outer circumferential surface of the movable support rail assembly 400 at a predetermined distance, and receives the driving force to move in one direction.

The pair of first moving rollers 521 are disposed on both sides of the upper portion of the truck body 510 and are in rolling contact with the first rail 401.

The support piece 530 is rotatably coupled to the lower end edge of the truck body 510.

The pair of second moving rollers 522 are arranged on both sides of the receiving piece 530 and come into rolling contact with the second rail 402.

The spring 540 is connected to the pair of first moving rollers 521 and the pair of second moving rollers 522 at both ends and the end edge of the receiving piece 530 is close to the side of the bogie body 510 To rotate in the direction of the arrow.

The movable truck assembly 500 includes a slot 570 cut upward from the lower end edge of the truck body 510 and a pivotally rotatable pivotally coupled unit 530, A handle 580 may be further included.

Needless to say, the present invention may further include the rack gear 460, the drive pinion 560, and the drive motor 550 so that the moving truck assembly 500 can move along the movable support rail assembly 400 .

The rack gear 460 is a ring-shaped member having a plurality of gears along the outer circumferential surface of the second rail 402 of the movable support rail assembly 400.

The driving pinion 560 is engaged with the rack gear 460 and rotates in one direction and moves the moving bogie assembly 500 in one direction along the forming direction of the first and second rails 401 and 402.

The drive motor 550 is mounted inside the moving truck assembly 500 facing the outside of the movable support rail assembly 400 and the drive pinion 560 is coupled to the end of the drive shaft.

5 (a), when the rotary knob 580 is lifted along the forming direction of the slot 570 in a state in which the first moving roller 521 is hooked on the first rail 401, The second moving roller 522 rotates relative to the truck main body 510 and the second moving roller 522 is in a state of being easily in rolling contact with the second rail 402. [

Here, the spring 540 is elongated in accordance with the oblique rotation of the receiving piece 530 according to the turning operation of the turning knob 580.

5 (b), the second moving roller 522 comes into rolling contact with the second rail 402 while the spring 540 applies an elastic force to shrink.

4) which is detachably engaged with the outer side of the movable support rail assembly 400 and the outer side of the movable support rail assembly 400 so as to face the positioning piece 700 And a position sensor (not shown in the drawings) provided on the inner side of the mobile carriage assembly 500 facing the mobile carriage assembly 500.

Here, the positioning piece 700 may include a permanent magnet (not shown) detachably attached to the outer side of the movable support rail assembly 400.

At this time, the position detecting sensor is in the initial state in which the positioning piece 700 and the position sensing sensor are facing each other and the welding by the third unit 300 is not performed.

Thereafter, after the welding by the third unit 300 is performed in accordance with the movement of the mobile truck assembly 500 from the initial state, the position detecting sensor completes the state of facing the positioning piece 700 again.

Accordingly, the position sensor senses a signal for stopping the operation of the third unit 300 while shutting off the driving force of the mobile truck assembly 500 in a completed state to the controller 900 detachably mounted on the mobile truck assembly 500 So as to stop the movement of the mobile truck assembly 500.

6, the upper surface of the movable support rail assembly 400 is in contact with an outer peripheral surface of each of the two structures 610 and 620 so as to be able to determine the mounting position of the movable support rail assembly 400, 630 and a centering band assembly 800 having a ring-shaped coupling rib 801 detachably coupled to the centering band assembly 800.

Here, the cross-sectional shape of the fastening rib 801 is preferably formed in a wedge shape, that is, a shape corresponding to the groove portion 630 having a 'V' shape.

At this time, the centering band assembly 800 includes ring-shaped partition plates 810 and 810, which are divided into two parts, one side edge of which is rotatably coupled, a coupling rib 801 is protruded along the inner peripheral surface, 810, and a moving support rail assembly 400 disposed at an upper end of the movable support rail assembly 400 at equal intervals along the outer circumferential surfaces of the ring-shaped partition plates 810, And includes a horizontal adjustment piece 830 that is seated.

The centering band assembly 800 may be separated from the structures 610 and 620 when the movable support rail assembly 400 is completely mounted.

Hereinafter, a process of mounting the automatic welding apparatus according to the present invention to a structure and a welding process will be briefly described.

First, the operator arranges the first and second structures 610 and 620 vertically so as to form a groove portion 630 having a V-shaped cross section, and the band fastener 820 The ring-shaped partitioning plates 810 and 810 are opened and the coupling ribs 801 are aligned with the groove portions 630 and the ring-shaped partitioning plates 810 and 810 are retightened, .

6, the operator unlocks the rail fastening tool 450 to disengage the first and second rail split members 410 and 410 from the first and second rail split members 410 and 410, The second rail 402 is brought into contact with the upper end of the horizontal adjustment piece 830 and then the first and second rail split members 410 and 420 are re- .

Next, the operator lifts the turning handle 580 along the forming direction of the slot 570 while the first moving roller 521 is hooked on the first rail 401, and moves the spring 540 to the turning handle 580 in accordance with the tilt rotation of the receiving piece 530.

When the operator releases the turning handle 580, the second moving roller 522 comes into rolling contact with the second rail 402 and rotates the first unit 100 to the thus- And the guide blades 230 of the second unit 200 coupled to the first unit 100 are seated against the grooves 630.

Next, the operator mounts the third unit 300 to the first unit 100, operates the controller 900, and drives the drive motor 550 and the third unit 300 to perform welding.

Here, the worker mounts the positioning piece 700 on the movable support rail assembly 400 as described above. When the positioning piece 700 is mounted by the controller 800 and the position facing the position detection sensor is set to the initial position And then stops the operation of the drive motor 550 and the third unit 300 when the bogie main body 510 rotates one time and the position detection piece 700 and the position detection sensor come into contact with each other again Of course.

Industrial Applicability As described above, the present invention is based on the technical idea of providing an automatic welding apparatus capable of ensuring reliable and high-quality welding along the abutting portions of two columnar structures each of which is a metallic material arranged in a vertical form .

It will be apparent to those skilled in the art that many other modifications and applications are possible within the scope of the basic technical idea of the present invention.

100 ... first unit
110 ... movable support
111 ... pivot connecting rod
112 ... supporting piece
113 ... first support bracket
120 ... elastic support
200 ... second unit
210 ... second support bracket
220 ... roller
230 ... guide blade
300 ... third unit
400 ... movable support rail assembly
401 ... first rail
402 ... second rail
410, 410 ... first rail split members
420, 420 ... second rail split members
430 ... rail connection piece
432 ... tight contact piece
450 ... rail fastener
460 ... rack gear
500 ... Mobile Truck Assembly
510 ... truck body
521 ... first moving roller
522 ... second moving roller
530 ... pedestal
540 ... spring
550 ... drive motor
560 ... drive pinion
570 ... slot
580 ... turning handle
610 ... first structure, upper structure
620 ... second structure
630 ... groove
631 ... first inclined surface
632 ... second inclined surface
700 ... positioning
800 ... centering band assembly
801 ... fastening rib
810, 810 ... ring-shaped partition plate
820 ... Band fastener
830 ... horizontal adjustment
900 ... controller

Claims (10)

A first unit for allowing a swinging motion in all directions along a moving direction parallel to a ring-shaped groove portion formed at an outer side by abutting end edges of two cylindrical structures arranged perpendicularly to the ground; A second unit moving along the ring-shaped groove; A third unit in contact with the first unit and moving along the groove to weld the groove; A movable support rail assembly detachably coupled to one of the two structures and having a ring shaped rail at an edge thereof facing the outer circumferential surface of the structure, and a movable support rail assembly coupled to the rail, 1 unit coupled to the mobile truck assembly,
The movable support rail assembly includes:
A plurality of fastening fasteners mounted at regular intervals on the inner surface of the movable support rail assembly so as to face the outer circumferential surface of the upper structure of the two structures and made of an elastic material in contact with the outer circumferential surface of the upper structure,
Further comprising a resilient member embedded in the tight fitting fastener and acting to exert an elastic repulsive force in a direction away from the outer circumferential surface of the upper structure.
The method according to claim 1,
The first unit includes:
A moving support rotatably coupled to the moving truck assembly and coupled to the second unit and the third unit,
And an elastic support portion coupled to the moving support portion and elastically deforming to allow the support portion to swing in the forward direction.
The method of claim 2,
The moving support portion
A pivot connection rod rotatably coupled to the movable truck assembly so as to be adjustable up and down,
A plurality of support pieces coupled to ends of the pivot connection rods and vertically spaced apart from each other,
And a first support bracket coupled to one side of the support piece to support the third unit,
Wherein the elastic support portion is disposed between the plurality of support pieces,
And the second unit is coupled to the support piece.
The method according to claim 1,
The second unit comprising:
A second support bracket detachably coupled to the first unit,
A roller rotatably mounted on the second support bracket,
And a guide blade projecting at a predetermined height along an outer circumferential surface of the roller and having an edge contacting the ring-shaped groove portion.
The method according to claim 1,
In the automatic welding apparatus,
A positioning piece detachably coupled to the outside of the movable support rail assembly,
Further comprising a position sensing sensor disposed on the inside of the moving bogie assembly facing the outside of the movable bogie rail assembly so as to face the positioning bogie.
The method according to claim 1,
In the automatic welding apparatus,
Further comprising a centering band assembly in contact with an outer circumferential surface of each of the two structures and detachably coupled to the ring-shaped groove so that the mounting position of the movable support rail assembly can be determined on an upper side thereof. Device.
The method according to claim 1,
In the automatic welding apparatus,
A ring-shaped rack gear having a plurality of gears along an outer circumferential surface of a second rail of the movable support rail assembly,
A driving pinion rotating in one direction in engagement with the rack gear and moving the moving rack assembly in one direction along the forming direction of the first and second rails,
Further comprising a drive motor mounted inside the movable bogie assembly facing the outside of the movable support rail assembly and coupled to the drive pinion at an end of the drive shaft.
delete delete The method according to claim 1,
The mobile truck assembly includes:
A bogie main body which is spaced apart from the outer circumferential surface of the movable support rail assembly by a predetermined distance and moves in one direction by receiving a driving force,
A pair of first moving rollers disposed on both sides of the upper portion of the truck main body and in rolling contact with the first rails,
A support piece pivotably coupled to an edge of a lower end of the bogie body,
A pair of second moving rollers disposed on both sides of the support piece and in rolling contact with the second rail,
And a spring connected to the pair of first moving rollers and the pair of second moving rollers at both ends so as to exert an elastic force such that the end edge of the receiving piece rotates in a direction approaching the bogie body side Features automatic welding equipment.

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