KR20140030943A

KR20140030943A - A moving structure of a welding device

Info

Publication number: KR20140030943A
Application number: KR1020120097742A
Authority: KR
Inventors: 최광덕; 성희준; 김경주; 신상룡; 최상구; 배범찬; 김영필
Original assignee: 현대중공업 주식회사
Priority date: 2012-09-04
Filing date: 2012-09-04
Publication date: 2014-03-12

Abstract

The present invention relates to a conveyance structure of a welding apparatus, comprising: a welding apparatus for performing welding; A rail which is installed on a member to be welded and guides the transfer of the welding apparatus, and a rack having a rack formed thereon in the upper or side direction along the conveying direction of the welding apparatus; And a driving part provided at a lower portion of the welding device and engaged with the rail to rotate and transport the welding device, wherein the driving part comprises: a rack gear that is engaged with the rack and rotates; It characterized in that it comprises a rack gear changing unit for changing the direction of the gear teeth of the rack gear by replacing or rotating the rack gear.
The conveying structure of the welding apparatus according to the present invention is a rack gear of a drive unit engaged with a rack of a vertical rail is rotated or replaced so as to be engaged with a rack of a horizontal rail, if necessary, thereby using a horizontal rail and a vertical rail. Various welding is possible by the welding apparatus, and the efficiency of a welding operation can be improved.

Description

A moving structure of a welding device

The present invention relates to a conveyance structure of a welding apparatus.

In general, in the industrial field to produce a variety of products by combining two or more steel materials, the welding method is mainly used to combine the steel materials. Welding is a method of joining other steel materials by melting a base material or a separate molten member at a connection part of a base material, and since the connection member is not required, the structure can be simple and lightweight, and is widely used because of its high durability.

The welding involves arc welding using melt heat generated by arc discharge, gas welding melted using oxygen and acetylene mixed gas, and electron beam welding using electron energy holding energy as a welding heat source by forming a high speed electron beam in vacuum. For example, laser beam welding for amplifying and matching light in phase with a single wavelength, and friction welding using frictional heat generated from a contact surface by relatively rotating abutment against a base metal.

Recently, an automatic welding device that automatically improves the operator's convenience by using the welding torch automatically moves along the welding line and performs the welding conveniently, in which the welding device moves along the rail.

However, in the related art, since the shape of the horizontal rail installed on the member placed flat on the ground and the vertical rail installed on the member placed perpendicular to the ground are partially different, it is impossible to use the horizontal rail and the vertical rail with one welding device. There is a problem in that a separate welding device is provided for the rail.

The present invention was created to solve the problems of the prior art as described above, an object of the present invention is to provide a horizontal unit and a drive unit to replace or rotate the rack gear engaged with the rail to utilize both the vertical rail, horizontal welding And a conveying structure of the welding device which enables the vertical welding to be performed by one welding device.

The conveying structure of the welding device according to an embodiment of the present invention, the welding device for performing welding; A rail which is installed on a member to be welded and guides the transfer of the welding apparatus, and a rack having a rack formed thereon in the upper or side direction along the conveying direction of the welding apparatus; And a driving part provided at a lower portion of the welding device and engaged with the rail to rotate and transport the welding device, wherein the driving part comprises: a rack gear that is engaged with the rack and rotates; It characterized in that it comprises a rack gear changing unit for changing the direction of the gear teeth of the rack gear by replacing or rotating the rack gear.

The conveying structure of the welding apparatus according to the present invention is a rack gear of a drive unit engaged with a rack of a vertical rail is rotated or replaced so as to be engaged with a rack of a horizontal rail, if necessary, thereby using a horizontal rail and a vertical rail. Various welding is possible by the welding apparatus, and the efficiency of a welding operation can be improved.

1 and 2 are front views of a transfer structure of a welding apparatus according to an embodiment of the present invention.
3 is a cross-sectional view of the rack gear change in the transfer structure of the welding apparatus according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

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

1 and 2 are front views of a transfer structure of a welding apparatus according to an embodiment of the present invention.

1 and 2, the conveying structure 1 of the welding apparatus according to an embodiment of the present invention includes a welding apparatus (not shown), rails 10a and 10b, and a driving unit 20. do.

A welding device (not shown) performs welding. The welding device may include various configurations such as a welding torch (not shown), a gas supply (not shown), a torch position adjusting unit (not shown), and the like. Each configuration of the welding apparatus is the same as the configuration generally used, so a detailed description of each configuration will be omitted.

The welding device may automatically perform welding while moving along the welding site. Specifically, the welding apparatus may move along the rails 10a and 10b by using the driving unit 20 disposed to contact a plurality of surfaces of the rails 10a and 10b to be described later.

The rails 10a and 10b are installed in the member 2 on which welding is to be performed and guide the transfer of the welding device. The rails 10a and 10b are connected by a plurality of rail support parts 11 coupled to the member 2, but are manufactured in one piece, thereby preventing the stepping from being formed on the rails 10a and 10b so that the welding device is smoothly transferred. You can do that. In this case, the rail support part 11 may be fixed to the member 2 by welding, but may be fixed at a position spaced a predetermined distance from the welding site.

The member 2 on which the welding is performed may be a curved member 2 having a constant curvature, in which case the rail 10a may have the same curvature as the curved member 2, and specifically, It can have the same curvature. In this case, the shortest distance from the welded portion to the rail 10a may always be constant, and the welding device may efficiently weld the welded portion by using a welding torch while moving along the rail 10a.

The rails 10a and 10b may be provided with upper racks 12a and 12b in which gear teeth 121a and 121b are formed upward or sideways along the conveying direction of the welding apparatus. The racks 12a and 12b are configured to ensure that the welding device is accurately guided along the rails 10a and 10b and to prevent the welding device from being pushed in place due to the load. It may be arranged at a distance apart from the upper center.

However, the gear teeth (121a, 121b) forming direction of the rack may be different depending on the shape of the welding line. For example, when the rail 10a is straight when viewed from above and curved when viewed from the side, the rack 12a may have the gear teeth 121a upward as shown in FIG. 1. This means that the welding line is bent from one end to the other end as the member 2 to be welded has a curved shape. The rail 10a is referred to as a vertical rail 10a or a vertical curved rail 10a. can do.

On the other hand, when the rail 10b is curved when viewed from above and is straight when viewed from the side, the rack 12b may have a gear tooth 121b formed laterally as shown in FIG. 2. This means that the member 2 to be welded is in the form of a flat plate, but the weld line is bent. The rail 10b at this time may be referred to as a horizontal rail 10b or a horizontal curved rail 10b.

As such, the direction in which the gear teeth 121a and 121b of the rack are formed according to the shape of the welding line may be smoothly engaged between the racks 12a and 12b and the rack gear 21 of the driving unit 20 to be described later. To make it work. If the member 2 to be welded is in the form of a flat plate and the welding line is bent to the left or the right, when the gear teeth 121b of the rack are disposed upward, the interval between the gear teeth 121b of the rack is not constant. This is because the rack 12b and the rack gear 21 may shift.

Therefore, the present embodiment may be properly provided with gear teeth 121a and 121b of the rack so as to correspond to the shape of the welding line, so that the rack gear 21 of the driving unit 20 may be smoothly transferred along the racks 12a and 12b. have.

However, in the present embodiment, the rack gear changing unit 22 to be described later according to the forming direction of the gear teeth 121a and 121b of the rack replaces or rotates the rack gear 21 so that the gear teeth 211 of the rack gear are in the direction of the gear teeth 211. Since can be switched, it is possible to efficiently perform a variety of welding without replacing the welding device.

The drive part 20 is provided in the lower part of a welding apparatus, and is engaged with the rail 10a, 10b, and rotates to convey a welding apparatus. In this case, the driving unit 20 further includes a rack gear 21 and a rack gear changing unit 22.

The rack gear 21 may be engaged with the racks 12a and 12b of the rails 10a and 10b mentioned above, and according to the direction in which the gear teeth 121a and 121b of the rack are formed, the gear teeth of the rack gear ( 211 may be formed.

That is, when the member 2 to be welded has a curved shape, the gear teeth 211 of the rack gear are formed to face downward as shown in FIG. 1, and the member 2 to be welded is curved in the plane or the weld line is curved. The gear teeth 211 of the rack gear may be formed to face laterally as shown in FIG. 2. As such, determining the forming direction of the gear teeth 211 of the rack gear and the gear teeth 121a and 121b of the rack according to the shape of the member 2 and the welding line may be performed by the rack gear changing unit 22. Therefore, the present embodiment may allow the welding apparatus to be smoothly transported along the rails 10a and 10b, regardless of what type of member 2 is welded.

The rack gear changing unit 22 replaces or rotates the rack gear 21 to change the direction of the gear teeth 211 of the rack gear. As described above, the racks 12a and 12b may have different formation directions of the gear teeth 121a and 121b according to the shape of the rails 10a and 10b. Therefore, the welding apparatus which performed welding along the vertical curved rail 10a in which the gear tooth 121a was formed upward cannot perform welding along the horizontal curved rail 10b in which the gear teeth 121b were formed laterally. This is because the rack gear 21 engaged with the rack 12a of the vertically curved rail 10a does not mesh with the rack 12b of the horizontally curved rail 10b. However, in the present embodiment, the rack gear changing unit 22 properly changes the direction of the gear teeth 211 of the rack gear, so that one welding device utilizes both the vertical rail 10a and the horizontal rail 10b. Work efficiency can be increased.

Specifically, when the gear teeth 121a of the rack are formed upward, the rack gear changing unit 22 arranges the gear teeth 211 of the rack gear downward, and the gear teeth 121b of the rack are formed laterally. If so, the rack gear 21 by rotating the gear teeth 211 of the rack gear can be arranged laterally. That is, the rack gear changing unit 22 may rotate the rack gear 21 so that the rack gear 21 is engaged with the racks 12a and 12b to be driven.

Alternatively, the rack gear changing unit 22 may engage the rack gear 21 with the racks 12a and 12b by replacing the rack gear 21. This will be described in detail with reference to FIG. 3.

3 is a cross-sectional view of the rack gear change in the transfer structure of the welding apparatus according to an embodiment of the present invention.

As shown in FIG. 3, in the feed structure 1 of the welding apparatus according to the embodiment of the present invention, the rack gear changing unit 22 has a rack gear insertion hole 221a, 221b is formed, and may include a drive shaft 222 therein. In this case, the driving shaft 222 has a fixing hole 223 is formed in the center and may have a tapered end.

In this case, the rack gear insertion hole 221a disposed on the left side of the rack gear changing unit 22 may communicate with the fixing hole 223 of the drive shaft 222, and may be disposed below the rack gear changing unit 22. The rack gear insertion hole 221b may allow the tapered end of the drive shaft 222 to be exposed.

If the vertical curved rail 10a is to be used, one end of the rack gear 21 passes through the rack gear insertion hole 221a provided on the left side of the rack gear changing unit 22 to fix the fixing hole of the drive shaft 222. Fixed in the inserted state 223, the gear teeth 211 of the rack gear is disposed downward, the rack gear 21 can be rotated when the drive shaft 223 is rotated.

On the other hand, in the case where the horizontal curved rail 10b is to be used, one end of the rack gear 21 penetrates through the rack gear insertion hole 221b provided below the rack gear changing unit 22 to taper the drive shaft 222. Can be engaged at the end. Through this, the rack gear 21 may be rotated according to the rotation of the drive shaft 222 in a state in which the gear teeth 211 are formed laterally.

In this case, the rack gear changing unit 22 may separately include a rack gear fixing unit (not shown) to prevent one end of the rack gear 21 from being separated from the rack gear changing unit 22. The rack gear fixing unit is configured to rotate in a state where the rack gear 21 is inserted into the rack gear insertion holes 221a and 221b of the rack gear changing unit 22, and a bearing (not shown) may be utilized. . However, since the detailed configuration of the rack gear fixing part uses a general shaft fixing structure, detailed description thereof will be omitted.

In this way, since the rack gear changing unit 22 can change the forming direction of the gear teeth 211 of the rack gear by replacing the rack gear 21 by 90 degrees, the welding device of the present embodiment is a vertically curved rail 10a. ) And horizontal rail 10b can be utilized.

Of course, the present invention is not limited to the replacement method of the rack gear 21 as described above, and if the direction of the gear teeth 211 of the rack gear can be changed, any replacement method can be used.

The drive unit 20 further includes a plurality of rollers 23, 24, and 25. In this case, the plurality of rollers 23, 24, and 25 include an upper roller 23, a side roller 24, and a lower roller 25.

The upper roller 23 contacts with and rotates the upper surface of the rail 10a, 10b. The upper roller 23 may be composed of a plurality of, one of the upper roller 23 may be disposed on the upper surface side end of the rail (10a, 10b), the other upper roller 23 is a rail (10a, It may be disposed in the central portion of the upper surface of 10b). The upper roller 23 is not disposed at both ends of the upper surface in order not to interfere with the racks 12a and 12b of the rails 10a and 10b described above. Of course, the present invention is not limited to the position of the upper roller 23 as described above, but the plurality of upper roller 23 may be disposed in a position that does not interfere with the rack (12a, 12b).

In this case, the roller shaft 231 of each upper roller 23 may have the same protruding direction. That is, the upper roller 23 is disposed on the upper surface side end of the rail (10a, 10b) on the basis of the drawings, the roller shaft 231 protrudes to the left, the upper roller (arranged in the upper surface center portion of the rail (10a, 10b) ( 23) The roller shaft 231 may also protrude to the left. The shape of the roller shaft 231 of the upper roller 23 is thus limited in order to arrange the rack gear 21 meshing with the racks 12a and 12b so as not to interfere with the upper roller 23. That is, the roller shaft 231 of the upper roller 23 may all protrude in a direction away from the rack gear 21.

The side rollers 24 are constituted by a pair and abut against both side surfaces of the rails 10a and 10b, and the protruding directions of the roller shafts 241 may be different from each other. The side rollers 24 may have an area relatively smaller than the thickness of the rails 10a and 10b, so that the side rollers 24 do not deviate from the sides of the rails 10a and 10b when the side rollers 24 rotate. To do this.

As for the side roller 24 arrange | positioned at the left side with reference to drawings, the roller shaft 241 protrudes upwards, but the roller shaft 241 protrudes below the side roller 24 arrange | positioned at the right side. The different projection direction of the roller shaft 241 of the side roller 24 is to prevent the interference with the rack gear 21, similar to that described in the upper roller 23. That is, in the side roller 24 disposed on the right side adjacent to the rack gear 21, the roller shaft 241 may protrude downward to avoid interference with the rack gear 21, and the side roller disposed on the left side. 24, since the interference with the rack gear 21 is not a problem, the roller shaft 241 can protrude upward for convenience.

The lower roller 25 abuts against the lower surfaces of the rails 10a and 10b to rotate. The lower roller 25 is constituted by a pair so that the lower roller 25 abuts on both side ends of the lower surfaces of the rails 10a and 10b to rotate. In this case, the lower roller 25 may be disposed to be symmetrical about a central portion of the rails 10a and 10b. This is because the lower roller 25 presses both ends of the rail 10a so that the welding device is firmly coupled to the rail 10a even when the rail 10a is disposed perpendicular to the ground during the transport of the welding device. To be transported.

The lower roller 25 may be different from each other in the protruding direction of the roller shaft 251. Unlike the upper roller 23 and the side roller 24, differently configuring the protruding direction of the roller shaft 251 of the lower roller 25, the rails 10a, 10b are fixed to the member 2 to be welded. This is to avoid interference with the rail support (11). That is, the present embodiment arranges the roller shaft 251 of the lower roller 25 so as to protrude outward from the rails 10a and 10b, so that the roller shaft 251 of the lower roller 25 is moved when the welding apparatus is transferred. Interference with the rail support part 11 can be prevented.

However, the present invention does not limit the protruding directions of the roller shafts 231, 241, and 251 of the upper roller 23, the side rollers 24, and the lower roller 25 as described above, and the rollers of the rollers 23, 24, and 25. The arrangement of the axes 231, 241, 251 may vary depending on the situation.

In addition, the driving unit 20 may further include a height adjusting unit (not shown) for adjusting the height of the lower roller 25. The distance between the lower roller 25 and the upper roller 23 should be equal to the thicknesses of the rails 10a and 10b, but the thicknesses of the rails 10a and 10b may vary depending on the welding specifications. By adjusting the height of the lower roller 25, the upper roller 23 and the lower roller 25 can be rotated in contact with the rails 10a and 10b regardless of the thickness of the rails 10a and 10b.

At this time, the height adjustment unit may adjust the height of the pair of lower rollers 25 at once, or may adjust the height of each lower roller 25 differently. Alternatively, in this embodiment, one lower roller 25 is provided with one height adjusting unit, so that the position of the lower roller 25 can be appropriately changed to correspond to the shape of the rails 10a and 10b. This is in case the rails 10a and 10b have a form in which the left thickness and the right thickness are different.

Thus, in this embodiment, the rack gear 21 in which the direction of the gear teeth 211 is switched to the vertical curved rail 10a and the horizontal curved rail 10b in which the formation direction of the gear teeth 121a and 121b of a rack differs. By using the drive unit 20 having a) it is possible to perform welding with one welding device, it is possible to increase the convenience and efficiency of the welding operation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: conveying structure of welding apparatus 2: member
10a, 10b: rail 11: rail support
12a, 12b: rack 121a, 121b: gear teeth of rack
20: drive unit 21: rack gear
211: gear of rack gear tooth 22: rack gear changing portion
221a, 221b: rack gear insertion hole 222: drive shaft
223: fixing hole 23: upper roller
231: roller axis of the upper roller 24: side roller
241: roller axis of the side roller 25: lower roller
251: roller axis of the lower roller

Claims

Welding apparatus for performing welding;
A rail which is installed on a member to be welded and guides the transfer of the welding apparatus, and a rack having a rack formed thereon in the upper or side direction along the conveying direction of the welding apparatus; And
It is provided in the lower portion of the welding device and includes a drive unit for rotating the meshed to the rail to convey the welding device, the drive unit,
A rack gear engaged with the rack and rotating;
And a rack gear changer configured to switch or rotate the rack gear to change the direction of the gear teeth of the rack gear.

The method of claim 1, wherein the rail,
A conveying structure of a welding apparatus, characterized in that it is provided on a curved member having a constant curvature and has the same curvature as the curved member.

The method of claim 1,
If the rail is straight when viewed from above and curved when viewed from the side, the rack is geared upwards,
When the rail is curved when viewed from above and straight when viewed from the side, the rack is a gear structure of the welding device, characterized in that the gear teeth are formed laterally.

The method of claim 3, wherein the rack gear changing unit,
When the gear teeth of the rack is formed upward, the gear teeth of the rack gear is disposed downward,
When the gear teeth of the rack is formed laterally, the transport structure of the welding device, characterized in that the gears of the rack gears are arranged laterally by rotating the rack gear 90 degrees.

The driving apparatus according to claim 1,
An upper roller which rotates in contact with an upper surface of the rail;
A side roller which abuts against the side of the rail and rotates; And
And a lower roller rotating in contact with a lower surface of the rail.

The method of claim 5, wherein
The side rollers are configured in pairs to rotate in contact with both side surfaces of the rail, and the protruding directions of the roller shafts are different from each other,
The lower roller is composed of a pair and rotated in contact with both ends of the lower surface of the rail, respectively, the projection structure of the welding device, characterized in that the direction of the roller shaft is different from each other.

The method of claim 5, wherein the driving unit,
The transport structure of the welding apparatus further comprises a height adjusting unit for adjusting the height of the lower roller.