KR102403864B1 - Orbital pipe welding apparatus - Google Patents

Abstract

The present invention is an orbital pipe welding apparatus capable of performing precise automatic welding while rotating 360 degrees along the circumference of a small pipe, spaced along the circumference of the pipe so that it can be installed or separated from the pipe, and directed toward the center of the pipe a clamp module having a plurality of pads disposed obliquely and variably adjusting the spacing between the pads to correspond to the size of the pipe; a track module that forms an opening for accommodating the pipe in the track housing supported by the clamp module, and rotates the rotor with a plurality of gears provided in the track housing based on the opening; a welding module for forming an opening corresponding to the opening in the rotating frame mounted on the rotor, and moving the welding head with a plurality of linear actuators provided in the rotating frame based on the opening; and a feeder module mounted on the rotating frame to supply the welding wire toward the welding head.

Description

Orbital pipe welding device {ORBITAL PIPE WELDING APPARATUS}

[0001] The present invention relates to an orbital pipe welding apparatus for welding piping for ships, such as a pipe, a metal tube, and a small pipe, to each other.

In general, ships are built to be used in the ocean, sea, lakes, rivers, etc. for a long time in harmony with structures, attachments, and assemblies of various materials.

Carbon steel pipe for piping, carbon steel pipe for pressure piping, austenitic stainless steel pipe for piping, galvanized steel pipe for water supply, seamless nickel chromium iron alloy pipe for piping, steel pipe for low or high temperature piping in the hull or inside of a vessel and piping members are installed.

When looking at these pipes by diameter, there are various sizes of pipes connected by welding in the shipyard, such as small diameters of 2 to 4 inches, large diameters of 300 mm or more, or up to 64 inches (about 1.6 m) and extra diameters.

In particular, the small pipe may have a relatively long installation length compared to a large diameter, and the bending deformation is also relatively severe, so it may be very difficult to apply the existing automatic welding device.

In addition, due to the roundness error of the pipe during butt welding, the small pipe is very difficult to adjust the welding position, and since most of the welding is done manually, there may be a problem of welding joint occurrence depending on the experience and skill of the welder.

In addition, when a new small pipe or pipe member is to be welded while the ship piping is installed in the existing hull block, the technique of precisely moving the welding device of the orbital structure along the circumference of the small pipe is a very difficult technique. have.

A general orbital welding device is one of the special types of arc welding, and performs welding while rotating 360 degrees continuously and mechanically with respect to a fixed workpiece such as a pipe.

However, the conventional welding apparatus of the orbital structure has a guide rail suitable for a large pipe, and the precision of the welding bogie moving along the guide rail may be affected by the situation of the guide rail.

When the conventional welding apparatus of an orbital structure is applied to a small pipe, it is very difficult to install a ring-shaped guide rail in line with the perfect circle of the small pipe, so it is easy to transport and attach and detach, and the circumference of the small pipe facing each other There is an urgent need for a means for automatic welding according to the requirements.

In the present invention, it can be easily detached or attached to a small tube of different diameter through a track module having an opening and a clamp module. An object of the present invention is to provide an orbital pipe welding device that can precisely perform automatic welding while a welding module and a feeder module rotate 360 degrees along the circumference of a small pipe.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

In order to solve the above problems, the present invention includes a plurality of pads spaced apart along the circumference of the pipe and inclined toward the center of the pipe so that they can be installed or separated from the pipe, and a clamp module capable of variably adjusting an interval corresponding to the size of the pipe; a track module that forms an opening for accommodating the pipe in the track housing supported by the clamp module, and rotates the rotor with a plurality of gears provided in the track housing based on the opening; a welding module for forming an opening corresponding to the opening in the rotating frame mounted on the rotor, and moving the welding head with a plurality of linear actuators provided in the rotating frame based on the opening; and a feeder module mounted on a rotating frame to supply a welding wire toward the welding head.

In addition, the track module may include: a track installed inside the track housing to guide the rotation of the rotor so that the rotor of the C-shaped ring gear shape rotates along the periphery of the opening; a plurality of bosses formed inside the track housing to be spaced apart along the periphery of the track; a plurality of driven gears, each of which is rotatably supported by a boss that maintains a first separation distance relatively larger than a diameter of the pipe among the bosses, and meshed with a gear on an outer circumferential surface of the rotor; A plurality of idlers, each of which is rotatably supported by a boss maintaining a second separation distance relatively smaller than the first separation distance, is meshed with the driven gear, and maintains play with respect to the gear of the rotor, among the bosses. Gear; and a driving gear that is meshed with the idle gear and receives rotational force from a driving motor disposed outside the orbit housing and transmits it to the idle gear, wherein the front edge of the rotor forming a right angle with respect to the inner circumferential surface of the rotor is the It may be exposed toward the welding module through the opening.

In addition, the welding module, the coupling protrusion formed along the opening of the rotating frame and protruding in the direction toward the orbit module so as to be coupled to the exposed rotor front edge portion; a junction box disposed on the upper right front side of the rotating frame; a first protection box spaced apart from the junction box and installed on the upper left front side of the rotating frame; and a plurality of cable guide brackets spaced apart from each other based on the outer surface of the rim of the rotating frame; have.

In addition, the cable guide bracket, the T-shaped extension bar coupled to the outer surface of the rim of the rotating frame; a guide bar coupled to an end of the extension bar and extending to form a right angle with respect to the extension bar; and a disk coupled to the end of the guide bar and having a relatively large area compared to the cross-sectional area of the guide bar.

In addition, the welding module may include: a first linear drive device installed inside the first protection box and reciprocating a moving frame extending outwardly downward from the inside of the first protection box in a radial direction of the pipe; an external linear rail installed on the lower left front side of the rotating frame so as to be parallel to the first linear driving device and guiding the reciprocating motion of the moving frame; a pedestal coupled to an end of the moving frame and extending in the longitudinal direction of the pipe; a second protection box installed on the pedestal and having an open upper surface; and a second linear driving device installed inside the second protection box and reciprocating the welding head disposed above the second protection box in the longitudinal direction of the pipe.

In addition, the first linear driving device and the second linear driving device may include: a moving block providing a base for mounting the moving frame or the welding head, which is a reciprocating object; a bed having an internal linear rail to support the bottom surface of the moving block; a ball screw block installed inside the moving block; a ball screw shaft screwed to the ball screw block; a plurality of bearing blocks installed on the bed to rotatably support both ends of the ball screw shaft; a step motor disposed on the bed parallel to the ball screw shaft; and a belt connecting the rotary shaft of the step motor and the pulley of the ball screw shaft to each other.

In addition, the feeder module, the feeder support coupled to the front of the rotating frame so as to protrude from the rotating frame for an equal position with the welding head; a feeder unit coupled to the feeder support and transferring the welding wire toward the welding head; and a spool holder coupled to a side surface of the casing of the feeder unit based on the wire inlet of the feeder unit and storing the welding wire.

In addition, the clamp module includes: a plurality of pad support plates to which the pads are detachably coupled through bolt coupling, respectively; a plurality of movable arms coupled to the pad support plate to correspond to the inclined arrangement of the pad and disposed on one side and the other side with respect to the pipe; a ball screw block coupled to an upper portion of each of the movable arms; a clamp shaft screwed to the ball screw block and having left and right screws so as to move the ball screw block closer to each other according to forward rotation or move the ball screw block apart from each other according to reverse rotation; a rotating handle attached to the end of the clamp shaft; a bearing block for rotatably supporting the clamp shaft; a mount frame for supporting the bearing block; and a clamp rail installed on the mount frame to slidably support the ball screw block, wherein the mount frame is provided with a plurality of recesses based on positions between bolt fastening parts of the mount frame to reduce weight, , may be coupled to the rear surface of the track housing of the track module based on the lower position of the drive motor.

According to the orbital pipe welding apparatus according to an embodiment of the present invention, it is an easy to handle and light device in the field, and has the advantage of being able to perform butt welding of a small diameter pipe of 2 to 4 inches quickly and very efficiently.

According to the orbital pipe welding apparatus according to the embodiment of the present invention, since the orbital pipe welding apparatus can be installed simply as a clamp module after positioning the orbital module as if it is inserted in the radial direction of a small pipe or pipe through the opening of the orbital pipe welding apparatus And by shortening the separation time, there is an advantage in that it is possible to prevent a decrease in productivity by improving the inconvenience caused by the installation of the existing device.

According to the orbital pipe welding apparatus according to the embodiment of the present invention, a plurality of cable guide brackets are disposed relatively far from the feeder module and the welding module, so that the cables for various welding apparatuses extending from the welding machine to the orbital pipe welding apparatus are twisted. There is an advantage in that it does not affect the feeding of the welding wire used for welding of small pipes or the welding operation of the welding module.

According to the orbital pipe welding apparatus according to the embodiment of the present invention, the welding head rotates 360 degrees along the circumference of the small pipe, and the position control of the welding head is made along the radial and longitudinal directions of the small pipe to perform precise welding. There are advantages that can be

According to the orbital pipe welding apparatus according to the embodiment of the present invention, the rotating frame of the welding module can be mounted on the ring gear-shaped rotor of the orbit module, and the welding module is selectively orbited according to different dimensional conditions and device specifications. It has the advantage that it can be mounted on a module.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.

1 is a perspective view of an orbital pipe welding apparatus according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a module of the orbital pipe welding apparatus shown in FIG. 1 .
3 is a front view of the orbital pipe welding apparatus shown in FIG.
FIG. 4 is a cross-sectional view taken along line AA shown in FIG. 3 .
FIG. 5 is a plan view of the orbital pipe welding apparatus shown in FIG. 1 .
6 is a perspective view showing the inside of the track module shown in FIG.
7 to 9 are cross-sectional views taken along line BB in order to explain the operation relationship of the track module shown in FIG. 6 .
10 is an exploded perspective view of the welding module shown in FIG.
11 is a perspective view of the linear driving device shown in FIG.
12 is a perspective view showing the inside of the feeder unit of the feeder module shown in FIG.
13 is an exploded perspective view of the spool holder of the feeder module shown in FIG.
14 is a perspective view of the clamp module shown in FIG.

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

DETAILED DESCRIPTION The detailed description set forth below in conjunction with the appended drawings is intended to describe exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced.

In order to clearly explain the present invention in the drawings, parts not related to the description may be omitted, and the same reference numerals may be used for the same or similar components throughout the specification.

In the drawings, FIG. 1 is a perspective view of an orbital pipe welding apparatus according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a module of the orbital pipe welding apparatus shown in FIG. 1, and FIG. 3 is an orbital pipe shown in FIG. It is a front view of the welding device.

1 to 3, the orbital pipe welding apparatus 10 according to the present embodiment refers to a pipe, a steel pipe, a small pipe for a ship, and the like, and the intermediate position of the pipe 1 having different diameters or sizes will be described later. It may be mounted or detached along the mounting direction (S) through the opening 101 or the opening 201 to be.

The orbital pipe welding device 10 may be a very compact and compact device that can be transported, installed, and disassembled by a user using the handle 103 .

The orbital pipe welding device 10 may be a device that performs welding while rotating the other side while one side thereof is firmly gripped by the pipe 1 .

For example, the orbital pipe welding apparatus 10 according to this embodiment includes a clamp module 400 and an orbit module 100 corresponding to one side thereof, and a welding module 200 and a feeder module 300 corresponding to the other side thereof. ) may be included.

The clamp module 400 includes a plurality of pads 410 spaced apart along the circumference of the pipe 1 and inclined toward the center CL of the pipe 1 so as to be installed or separated from the pipe 1 . can do.

Here, the center CL of the pipe 1 may correspond to the rotation axis RL of the welding head 290 (refer to FIG. 3 ).

The clamp module 400 may variably adjust the spacing between the pads 410 to correspond to the size of the pipe 1 .

The track module 100 may be connected to the clamp module 400 through the coupling between the front surface of the clamp module 400 and the rear surface of the track housing 110 of the track module 100 .

The orbit module 100 connected in this way forms an opening 101 for accommodating the pipe 1 in the track housing 110 supported by the clamp module 400 .

In addition, the track module 100 may serve to rotate the rotor 120 with a plurality of gears provided in the track housing 110 with respect to the opening 101 .

The welding module 200 forms an opening 201 in the rotating frame 210 mounted on the rotor 120 of the orbit module 100 .

Here, in the initial position of the device, the opening 201 of the welding module 200 has a size corresponding to the opening 101 of the orbit module 100, and may be in a position corresponding to or coincident with each other.

In addition, the opening 201 or the opening 101 has an approximately circular shape, a horseshoe shape, or an English C shape based on the center CL of the pipe 1 or the rotation axis RL of the welding head 290, respectively. may be formed.

The welding module 200 moves the welding head 290 according to a control signal of a controller (not shown) with a plurality of linear actuators 220 and 230 provided in the rotation frame 210 based on the opening 201 . can play a role.

That is, the linear driving devices 220 and 230 of the welding module 200 rotate 360 degrees based on the welding line or welding improvement (not shown) of the pipe 1 facing each other by the orbit module 100, while the welding is performed. Since the head 290 can be moved in a straight line or reciprocated for the welding operation, more precise automatic welding can be performed, and pipes 1 of various sizes can be welded according to the size of the pipe 1 . There is this.

The feeder module 300 is interlocked with the operation of the welding module 200 , and may be mounted on the rotating frame 210 to supply the welding wire toward the welding head 290 .

The track module 100, the welding module 200, and the feeder module 300 are connected through cables or wires for various welding devices with respect to the controller and welding machine, not shown, so that they can receive power and control signals. has been

The technology of the controller and the welding machine may correspond to a typical automatic welding technology, and may not be a feature described in this embodiment, and thus may be omitted in this embodiment.

4 is a cross-sectional view taken along the line A-A shown in FIG. 3 , FIG. 5 is a plan view of the orbital pipe welding apparatus shown in FIG. 1 , and FIG. 6 is a perspective view showing the inside of the orbital module shown in FIG. 2 .

4 to 6 , the track module 100 includes a track housing 110 having an opening 101 and a rotor 120 , a track 130 , bosses 140 , 141 , 142 , 143 , and driven It may include gears 150 and 151 , idle gears 160 and 161 , a driving gear 170 , and a driving motor 180 .

In addition, the track module 100 is coupled to both upper sides of the track housing 110, a plurality of support blocks 102 protruding upward, and a handle 103 coupling both ends to the support block 102. ) may be included.

The track housing 110 may be assembled with a plurality of bolts in a state in which the front housing and the rear housing thereof are overlapped with each other.

The front and rear thickness of the support block 102 may be the sum of the thickness of the front housing of the track housing 110 and the thickness of the rear housing.

That is, the support block 102 is coupled to the track housing 110 with a plurality of bolts in a state that covers both the thickness of the front housing of the track housing 110 and the upper portion of the rear housing, so that the front housing of the track housing 110 is It can be used as a means to integrate thickness and rear housing with each other.

Accordingly, there is an effect of increasing the thickness of the front housing of the track housing 110 and the assembly state and quality of the rear housing.

In addition, there is an advantage that the handle 103 can be coupled to the thickness reference center position of the track housing 110 through the support block 102 .

The orbital pipe welding device 10 including the orbital module 100 is a miniaturized equipment that a user can carry by holding the handle 103, and a device that allows the user to conveniently and conveniently weld a pipe such as a small pipe in the field can be

In particular, by placing the orbit module 100 in an intermediate position, the welding module 200 is disposed at the front position of the orbit module 100, and the clamp module 400 is disposed at the rear position of the orbit module 100, the front and rear An effect of greatly increasing the quality of the weight balance in the direction may be generated, and a stability may be given to the movement of the welding head 290 .

The track housing 110 is formed to be disassembled and assembled into a front housing and a rear housing.

The rotor 120 has a ring gear shape, and has a gear formed on an outer circumferential surface, an inner circumferential surface corresponding to a smooth circumferential surface, a gear section extending in the circumferential direction, and a discontinuous section corresponding to the opening 101 .

The discontinuous section of the rotor 120 may facilitate access to or installation of the pipe in the radial direction.

The track 130 may be a ring-type solid bearing with a part open so as to provide a rotational basis by sliding contact by matching the shape of the track groove provided on the front and defecation of the rotor 120, respectively.

The track 130 is installed in the track installation groove inside the track housing 110 based on positions corresponding to the track grooves of the rotor 120 , respectively, to guide the rotation of the rotor 120 .

The track 130 may be installed inside the track housing 110 so that the C-shaped ring gear-shaped rotor 120 rotates along the circumference of the opening 101 .

If the opening 101 is considered to be at a lower position of the track housing 110 , the bosses 140 , 141 , 142 , 143 may be arranged at an upper position of the track 130 .

For example, the bosses 140 , 141 , 142 , and 143 may be formed in plurality (eg, four) inside the track housing 110 to be spaced apart along the periphery of the track 130 .

7 to 9 are cross-sectional views taken along the line B-B in order to explain the operating relationship of the track module shown in FIG. 6 .

6 to 9 , a plurality of, for example, two driven gears 150 and 151 have a first separation distance L1 that is relatively larger than the diameter of the pipe among the above-mentioned bosses 140 , 141 , 142 , 143 . may be rotatably supported by the bosses 140 and 141 for holding each other.

Each of the driven gears 150 and 151 may be meshed with a gear on the outer peripheral surface of the rotor 120 .

That is, the rotor 120 may receive rotational force from the driven gears 150 and 151 meshed at two points.

The first separation distance L1 of the bosses 140 and 141 related to the driven gears 150 and 151 is a rotor discontinuity corresponding to the outer diameter or opening 101 of a pipe (eg, a small diameter pipe of 2 to 4 inches). It is relatively larger than the distance of the section L3 (see FIG. 7 ).

For example, since the distance of the rotor discontinuous section L3 is 4 to 5 inches, that is, 10.16 to 12.7 cm, the orbital pipe welding apparatus 10 of this embodiment can be easily installed in a small-diameter tube of 2 to 4 inches. .

Therefore, during the rotation of the rotor 120, the discontinuous section L3 of the rotor 120 corresponding to the opening 101 is present in the region between the meshing points of the driven gears 150 and 151 and the rotor 120, As a result, the rotor 120 may receive constant rotational force through one or more meshing points among the driven gears 150 and 151 .

A plurality of, for example, two idle gears 160 and 161 are bosses that maintain a relatively small second separation distance L2 compared to the aforementioned first separation distance L1 among the bosses 140 , 141 , 142 and 143 . It is rotatably supported by (142, 143), respectively.

Each of the idle gears 160 and 161 meshes with the driven gears 150 and 151 , respectively, while maintaining clearance with respect to the gear of the rotor 120 .

For this reason, the rotational force of the idle gears 160 and 161 may be transmitted toward the rotor 120 through the driven gears 150 and 151 .

The driving gear 170 may be disposed between the idle gears 160 and 161 .

The driving gear 170 is meshed with each of the idle gears 160 and 161 disposed on both sides, and receives rotational force from the driving motor 180 disposed outside the orbital housing 110 to receive the idle gears 160 and 161. plays a role in transferring

At this time, the driving motor 180 may surround the driving motor 180 and may be protected by a protective case 181 (refer to FIG. 4 ) that is detachably coupled to the rear surface of the track housing 110 .

In addition, the rotor front edge portion 121 forming a right angle with respect to the inner circumferential surface of the rotor 120 is exposed toward the welding module 200 through the opening 101 (refer to FIG. 4 or FIG. 6).

Accordingly, the front edge of the rotor 121 may be an installation base of the welding module 200 or a position where it can be disassembled and assembled.

A plurality of bolt holes for coupling to or separation from the welding module 200 are formed in the front edge of the rotor 121 .

That is, since the front edge of the rotor 121 can be detachably coupled to the rotation frame 210 of the welding module 200, according to other dimensional conditions and device specifications related to the welding module 200, the welding module ( 200) may be mounted on the track module 100 .

6 to 9 , the rotational force of the driving motor 180 is distributed and transmitted at the same ratio toward the idle gears 160 and 161 through the driving gear 170 .

The driven gears 150 and 151 receive rotational force of the same magnitude from the idle gears 160 and 161 , and provide the received rotational force to the rotor 120 .

During the rotation of the rotor 120 , the rotor discontinuous section L3 may exist only at the meshing position of any one of the driven gears 150 and 151 .

As a result, the rotor 120 may receive constant rotational force at one or more meshing points of the driven gears 150 and 151 , and may continuously rotate 360 degrees within the range of receiving the power.

The continuous 360-degree rotation of the rotor 120 may mean continuous 360-degree rotation of the welding module 200 and the feeder module 300 to be described later.

10 is an exploded perspective view of the welding module shown in FIG. 2 , and FIG. 11 is a perspective view of the linear driving device shown in FIG. 10 .

Referring to FIG. 10 , the welding module 200 includes a rotating frame 210 installed based on the above-described 360-degree rotatable rotor 120 .

The rotating frame 210 has a plate shape based on the thickness direction, and when based on the front direction, by the opening 201 and its surrounding shape, it is formed in a horseshoe shape or a lowercase English letter n shape. there may be

The welding module 200 is formed along the opening part 201 of the rotation frame 210 so as to be coupled to the exposed rotor front edge part 121 (see FIG. 2 ) of the rotor 120 described above, and the track module 100 ) has a coupling protrusion 211 protruding in the direction.

Since the coupling protrusion 211 may also be formed in a horseshoe shape or an English letter C or N shape, the rotating frame 210 and the rotor 120 may be coupled to each other very firmly.

That is, the coupling protrusion 211 has a plurality of bolt holes 212 that correspond to the plurality of bolt holes of the front edge of the rotor 121 described above, respectively, so that a plurality of bolt holes 212 capable of fastening bolts, not shown, are formed in the rotation frame 210 . It is formed to penetrate in the thickness direction.

Due to the protrusion height of this coupling protrusion 211, the rear surface of the rotation frame 210 except for the coupling protrusion 211 has an operating clearance G with respect to the front of the orbit frame 110 (see FIG. 4 or FIG. 6). can keep

That is, the rotation of the rotating frame 210 due to the operating clearance (G) has an advantage that can not be interfered with by the orbit frame (110).

In addition, the cross-sectional shape of the coupling protrusion 211 may be formed in a step shape, and through this, by contacting the front and side surfaces of the front edge of the rotor 121 of the rotor 120, the binding force according to the relatively wide contact surface is obtained. There are advantages to having.

The welding module 200 includes a junction box 240, a first protection box 250, a second protection box 251, a plurality of cable guide brackets 260, a moving frame 270, an external linear rail 271, and a pedestal 272 .

The junction box 240 is disposed on the right upper front side of the rotation frame 210 .

The junction box 240 has a built-in circuit part and connection device connected to the controller of the linear driving device 220 and 230, so that the circuit part and the connection device can be protected.

The first protection box 250 is spaced apart from the junction box path 240 and is installed on the upper left front side of the rotation frame 210 .

The first protection box 250 may serve to protect the first linear drive device 220 .

The first protective box 250 is further provided with a separate disassembly and assembly cover 252, and has the advantage of very convenient maintenance.

In addition, the first protective box 250 and the cover 252 prevent spark residues or foreign substances generated during welding from easily flowing into the inside of the second linear actuator 230, so that the first linear actuator 220 is provided. It has the advantage of being able to prevent malfunctions or breakdowns in advance.

Since each cable guide bracket 260 has a structure that is extended in a relatively wide range compared to the planar area of the rotating frame 210, it is used to prevent twisting of cables for various welding devices or to weld small pipes. It has the advantage of not affecting the feeding of the wire or the welding operation of the welding module.

For example, the cable guide bracket 260 is dispersedly disposed on the outer surface of the rim of the lower right end of the rotating frame 210, the right side, the upper surface, the upper left side, the lower left side.

Each cable guide bracket 260 is coupled to a T-shaped extension bar 261 coupled to the outer surface of the corresponding rim of the rotating frame 210, and the end of the extension bar 261, and is perpendicular to the extension bar 261. It may include a guide bar 262 extending to form a, and a disk 263 coupled to an end of the guide bar 262 and having a relatively large area compared to the cross-sectional area of the guide bar 262 .

Here, the disk 263 has the advantage of being able to effectively prevent the cables for various welding devices from being separated out of the device when the device rotates by serving as a stopper of the cables for various welding devices.

In addition, the plurality of cable guide brackets 260 are spaced apart based on the outer surface of the rim of the rotating frame 210 to prevent interference between the feeder module 300 and the welding module 200 and cables for various welding devices. can have an effect.

In addition, the linear actuators 220 and 230 may be understood as a first linear actuator 220 and a second linear actuator 230 in order to precisely simulate the automatic welding operation of a small pipe.

The first linear driving device 220 is installed inside the first protection box 250 and extends downwardly from the inside of the first protection box 250 to the outside through the opened area of the first protection box 250 . It serves to reciprocate the moving frame 270 in the radial direction of the pipe (M1).

The moving frame 270 may be a single integrated link member, or a link member assembled with a plurality of parts by bolts.

The external linear rail 271 is installed on the lower left front side of the rotation frame 210 in a state spaced apart to be parallel to the first linear drive device 220, and guides the reciprocating motion M1 of the moving frame 270. play a role

The external linear rail 271 is provided in plurality, and like the structure of a general linear module device, each of the moving blocks can be slid. At this time, the moving block and the moving frame 270 are connected by bolts or the like.

The pedestal 272 is coupled to the end of the moving frame 270 and extends in the longitudinal direction of the pipe.

Since the pedestal 272 and the moving frame 270 are coupled to form a right angle to each other, they may be moved together by the reciprocating motion M1 of the first linear driving device 220 .

The second protection box 251 is installed on the pedestal 272 so as to be disposed on the pedestal 272 .

The second protection box 251 serves to protect the second linear driving device 230 .

That is, the second protection box 251 prevents spark residues or foreign substances generated during welding from easily entering the inside of the second linear actuator 230, thereby preventing malfunction or failure of the second linear actuator 230. It has the advantage of being able to prevent it in advance.

The upper surface of the second protection box 251 may be opened for mounting or movement of the welding head 290 .

The second linear drive device 230 is installed inside the second protection box 251, and reciprocates (M2) the welding head 290 disposed on the upper side of the second protection box 251 in the longitudinal direction of the pipe. can play a role in making

Here, the first linear driving device 220 and the second linear driving device 230 include moving blocks 221 and 231 that provide a mounting base for the moving frame 270 or the welding head 290, which is a reciprocating object, respectively. include

The welding head 290 is a general automatic welding device, configured to perform arc welding according to the supply of a welding wire, and can be understood as a device capable of tracking a welding line or welding improvement by checking a welding current.

In addition, since the welding head 290 may be configured together with a welding line tracking device using a separate optical device or sensor, it may not be limited to a specific configuration of the welding head 290 .

In the configuration to be described below, since the first linear driving device 220 and the second linear driving device 230 have almost the same configuration, the second linear driving device 230 is used to avoid overlapping description and clarify the configuration. It can be described as a reference, and the first linear driving device 220 also has the same detailed configuration as the second linear driving device 230 to be described later.

Referring to FIG. 11 , the second linear driving device 230 may include a bed 233 having an internal linear rail 232 .

Here, the bed 233 of the second linear driving device 230 may be coupled on the pedestal 272 . On the other hand, the bed 223 of the first linear driving device 220 may be coupled to the rotating frame 210 as shown in FIG. 10 .

Referring back to FIG. 11 , each bed 233 or the inner linear rail 232 basically serves to support the bottom surface of the moving block 231 , and in particular, the inner linear rail 232 is the moving block 231 . It can serve to guide the sliding or reciprocating movement of

The second linear driving device 230 includes a ball screw block 234 installed inside the moving block 231 and a ball screw shaft 235 screwed to the ball screw block 234 .

In addition, the second linear driving device 230 includes a plurality of bearing blocks 236 installed on the bed 233 to rotatably support both ends of the ball screw shaft 235 and the ball screw shaft 235 in parallel. It includes a step motor 237 disposed above the bed 233 .

The step motor 237 may be called or understood as a servo motor, a driving motor, a linear motor, a gear motor, and the like, and thus may not be limited to a specific motor or an electric power device.

In addition, the second linear driving device 230 may include a belt 238 connecting the rotary shaft of the step motor 237 and the pulley of the ball screw shaft 235 to each other.

Here, the pulley and the belt 238 may also be equivalent power transmission mechanisms such as a timing belt, a pulley, a chain, and a sprocket gear.

Therefore, if it is a configuration that can transmit the driving force of the step motor 237 to the ball screw shaft 235, the pulley and belt 238 are also understood as any one of various power transmission mechanisms, and may not be limited to a specific pulley and belt assembly. have.

FIG. 12 is a perspective view showing the inside of the feeder unit of the feeder module shown in FIG. 2 , and FIG. 13 is an exploded perspective view of the spool holder of the feeder module shown in FIG. 2 .

2, 12 and 13 , the feeder module 300 includes a feed support 310 , a feeder unit 320 , and a spool holder 330 .

The feeder support 310 is installed in a detachable position of the rotating frame 290 at a position opposite to the welding head 290 .

The feeder support 310 secures a space corresponding to its extended length, so that the feeder unit 320 and the spool holder 330 are disposed at a position equal to the welding header 290 on the opposite side of the welding head 290. can make it possible

In addition, the feeder support 310 has an advantage that can secure the installation space of the servo motor 324 of the feeder unit 320 (refer to FIG. 5).

This feeder support 310 protrudes from the rotation frame 210 corresponding to the opposite side of the welding head 290 toward the front (eg, in a direction parallel to the longitudinal direction of the guide bar 262 of the cable guide bracket 260). It is coupled to the front of the rotating frame 210 so as to be.

When the left and right directions of the rotation frame 210 are referred to as a horizontal reference line, the feeder support 310 may have an inclination angle toward the left upward with respect to the horizontal reference line.

The inclination angle of the feeder support 310 directs the supply direction of the welding wire (W) to the space above the pipe (1), so that the welding wire (W) crosses the pipe (1) in a non-contact state with the pipe (1) and the welding head (290) can exert the effect that it can be supplied smoothly and safely.

The feeder unit 320 may be coupled to the feeder support 310 and serve to transfer the welding wire W toward the welding head 290 .

The feeder unit 320 may include a wire inlet 321, a tension adjusting unit 322, a wire outlet 323, a gear arrangement 325 and a transfer roller 326, which will be described later based on the casing 327, etc. have.

In a state in which the welding wire W is wound around the spool holder 330 , the wire inlet 321 and the tension adjusting unit 322 of the feeder unit 320 by the transfer force of the feeder unit 320 from the spool holder 330 . ) and via the wire outlet 323 may be supplied toward the welding head 290.

The feed force of the feeder unit 320 may be transmitted to the welding wire W through the bevel gear of the servo motor 324 of the feeder unit 320 and the gear arrangement 325 meshed therewith and the feed roller 326. have.

The spool holder 330 is coupled to the side of the casing 327 of the feeder unit 320 based on the wire inlet 321 of the feeder unit 320 .

The spool holder 330 may store the welding wire W in a wound state, and release the welding wire W by the feeding force of the feeder unit 320 to discharge it.

To this end, the spool holder 330 may include a spool 331 on which the welding wire W is wound, and a holder casing 332 rotatably coupling the spool 331 .

Here, the holder casing 332 has a rotation area of the spool 331 and a wire outlet area.

In particular, the wire outlet region of the holder casing 332 may be coupled to the side of the casing 327 of the feeder unit 320 based on the aforementioned wire inlet 321 .

In addition, the spool holder 330 provides a friction force to the spool 331 based on the holder casing 332, thereby preventing the welding wire W from being excessively loosened from the spool 331. The spool pusher ( 333) has.

For example, the spool pusher 333 may include a shaft bracket 334 coupled to the holder casing 332 , and a shaft 335 slidable within a certain range by the shaft bracket 334 .

In addition, the spool pusher 333 includes a pusher arm 336 vertically coupled to the shaft 335, a spring lever 337 mounted on the pusher arm 336, and a friction plate fitted to the spring lever 337 ( An elastic body 339 for pressing the 338 toward the disk surface of the spool 331 may be provided.

The elastic force of the elastic body 339 may be used to push or press the friction plate 338 toward the spool 331 .

In this case, the spool 331 may not rotate due to friction, and when the feed force of the feeder unit 320 is greater than the friction force, the spool 331 may rotate and supply the welding wire W by loosening it.

14 is a perspective view of the clamp module shown in FIG.

Referring to FIG. 14 , the clamp module 400 includes a plurality of pad support plates 420 to which respective pads 410 are detachably coupled through bolt coupling.

After using the pad 410 for a long time, the pad 410 can be detached from the pad support plate 420 , so maintenance is very easy.

A total of four pads 410 are respectively disposed on the upper right, upper left, lower right, and lower left of the pipe with respect to the center of the pipe, and have an inclined arrangement so that the surface of the pad 410 faces the center of the pipe.

The clamp module 400 has a plurality of movable arms 430 that are coupled to the pad support plate 420 to correspond to the inclined arrangement of the pad 410 , and serve as a support base or a moving base of the pad support plate 420 .

The movable arm 430 has an access hole 431 and has the advantage of being a lightweight structure.

The movable arm 430 may be disposed on one side (eg, the right side) and the other side (eg, the left side) with respect to the pipe, and each of the pads 410 having a vertical arrangement structure is provided as a pair.

When extending the middle position of the upper and lower intervals of the pad 410 in the left and right direction, the extension line may pass through the center of the pipe or the rotation axis of the welding head.

Therefore, when the moving arm 430 is brought into close proximity to each other, the pair of pads 410 on one side and the pad 410 on the other side can act as a clamping force in the direction of the center of the pipe, and clamp the pipe to correspond to pipes of various sizes. can do.

The clamp module 400 may include a ball screw block 440 coupled to an upper portion of each of the movable arms 430 .

The clamp module 400 is screwed to the ball screw block 440 to move the ball screw block 440 closer to each other according to the forward rotation, or to move the ball screw block 440 away from each other according to the reverse rotation. So, it may include a clamp shaft 450 having left and right screws.

For example, the left and right screws of the clamp shaft 450 may mean that the screw shapes of the left and right screw areas are formed in opposite directions with respect to the intermediate point.

That is, the ball screw block of the left moving arm among the two moving arms 430 is fastened to the left forward screw among the left and right screws of the clamp shaft 450 , and the ball screw of the right moving arm among the moving arms 430 is fastened to the right reverse screw. Block 440 is fastened.

In addition, a circumferential surface or a coupling surface capable of being coupled to the bearing block 470 may be formed in the clamp shaft 450 except for the left and right screws.

The clamp module 400 may include a rotation handle 460 attached to the end of the clamp shaft 450 in order to generate a forward or reverse rotation of the clamp shaft 450 .

The user manipulates the rotation handle 460 having a relatively larger circular area than the diameter of the clamp shaft 450 to easily rotate the clamp shaft 450 forward or reverse, thereby quickly and easily clamping the pipe. can

The clamp module 400 includes a bearing block 470 for rotatably supporting the clamp shaft 450 , a mount frame 480 for supporting the bearing block 470 , and a ball screw block installed on the mount frame 480 . It includes a clamp rail 490 for slidably supporting the 440 .

Accordingly, only the forward or reverse rotation of the rotation handle 460 allows the moving arms 430 having the pad 410 to move smoothly toward or away from each other, thereby exhibiting the effect that a precise clamping operation can be performed.

In addition, the clamp module 400 is manufactured through a lightweight design.

For example, the mount frame 480 of the clamp module 400 is provided with a recess portion 482 based on the position between the bolt fastening portions 481 of the mount frame 480 to reduce weight.

The clamp module 400 is coupled to the rear surface of the orbit housing 110 of the orbit module 100 based on the lower position of the driving motor 180 of the orbit module 100 .

Therefore, the clamp module 400 is mounted on the pipe to match the center of each size of the pipe, and the mounting state can be stably maintained.

According to the orbital pipe welding apparatus according to an embodiment of the present invention, it is an easy to handle and lightweight device in the field, and has the advantage of being able to perform butt welding of a small diameter pipe of 2 to 4 inches quickly and very efficiently.

When the orbital pipe welding device of the present invention is clamped in the radial direction of the small pipe, the rotation axis of the welding head can be aligned with the center of the pipe, so that precise welding can be performed while moving the welding head with a linear actuator. there are advantages to

In addition, since the orbital pipe welding apparatus of the present invention can be installed or separated from the pipe by simply using a clamp module, it has the advantage of reducing the time and improving the inconvenience caused by the existing installation of the apparatus, thereby preventing the decrease in productivity.

In addition, the orbital pipe welding apparatus of the present invention is provided with a plurality of cable guide brackets in the form of an extended structure to prevent interference between the feeder module and the welding module and cables for various welding devices, and to prevent twisting of cables. There is this.

As a result, the orbital pipe welding apparatus of the present invention has the advantage of maximizing production technology in the field of welding small pipes in ship construction, mass-producing more stable welded pipe products through production automation, and increasing reliability for shipowners.

The embodiments of the present invention disclosed in the present specification and drawings are merely provided for specific examples to easily explain the technical content of the present invention and help the understanding of the present invention, and are not intended to limit the scope of the present invention.

Therefore, the scope of the present invention should be construed as including all changes or modifications derived based on the technical idea of the present invention in addition to the embodiments disclosed herein are included in the scope of the present invention.

10: orbital pipe welding device 100: track module
110: track housing 120: rotor
130: track 140, 141, 142, 143: boss
150, 151: driven gear 160, 161: idle gear
170: drive gear 180: drive motor
200: welding module 210: rotating frame
220, 230: linear drive device 290: welding head
300: feeder module 320: feeder unit
330: spool holder 400: clamping module
410: pad 460: rotation handle

Claims (8)

A plurality of pads spaced apart along the perimeter of the pipe and inclined toward the center of the pipe to be installed or separated from the pipe, and the distance between the pads can be variably adjusted to correspond to the size of the pipe clamp module;
a track module that forms an opening for accommodating the pipe in the track housing supported by the clamp module, and rotates the rotor with a plurality of gears provided in the track housing based on the opening;
a welding module for forming an opening corresponding to the opening in the rotating frame mounted on the rotor, and moving the welding head with a plurality of linear actuators provided in the rotating frame based on the opening; and
Including; and a feeder module mounted on the rotating frame to supply the welding wire to the welding head.
The welding module is
a coupling protrusion formed along the opening of the rotating frame and protruding in a direction toward the track module to be coupled to the rotor;
a junction box disposed on the upper right front side of the rotating frame;
a first protection box spaced apart from the junction box and installed on the upper left front side of the rotating frame; and
Includes; a plurality of cable guide brackets spaced apart based on the outer surface of the rim of the rotating frame;
An orbital pipe welding apparatus for maintaining a working clearance between the rear surface of the rotating frame and the front surface of the orbital housing due to the protrusion height of the coupling protrusion. The method of claim 1,
The track module is
a track installed inside the track housing to guide the rotation of the rotor so that the rotor of the C-shaped ring gear shape rotates along the periphery of the opening;
a plurality of bosses formed inside the track housing to be spaced apart along the periphery of the track;
a plurality of driven gears respectively rotatably supported by bosses maintaining a first separation distance relatively larger than a diameter of the pipe among the bosses, and meshed with gears on an outer circumferential surface of the rotor;
A plurality of idlers, each of which is rotatably supported by a boss maintaining a second separation distance that is relatively smaller than the first separation distance among the bosses, is meshed with the driven gear, and maintains play with respect to the gear of the rotor. Gear; and
a driving gear meshed with the idle gear, receiving rotational force from a driving motor disposed outside the track housing and transmitting the torque to the idle gear; and
An orbital pipe welding apparatus in which a front edge portion of a rotor forming a right angle with respect to an inner circumferential surface of the rotor is exposed toward the welding module through the opening. delete The method of claim 1,
The cable guide bracket is
T-shaped extension bar coupled to the outer surface of the rim of the rotating frame;
a guide bar coupled to an end of the extension bar and extending to form a right angle with respect to the extension bar; and
and a disk coupled to an end of the guide bar and having a relatively large area compared to a cross-sectional area of the guide bar. The method of claim 1,
The welding module is
a first linear drive device installed inside the first protection box and reciprocating a moving frame extending outwardly downward from the inside of the first protection box in a radial direction of the pipe;
an external linear rail installed on the lower left front side of the rotating frame to be parallel to the first linear driving device and guiding the reciprocating motion of the moving frame;
a pedestal coupled to an end of the moving frame and extending in the longitudinal direction of the pipe;
a second protection box installed on the pedestal and having an open upper surface; and
and a second linear driving device installed inside the second protection box and reciprocating the welding head disposed above the second protection box in the longitudinal direction of the pipe. 6. The method of claim 5,
The first linear drive device and the second linear drive device,
a moving block providing a base for mounting the moving frame or the welding head, which is a reciprocating object;
a bed having an internal linear rail to support the bottom surface of the moving block;
a ball screw block installed inside the moving block;
a ball screw shaft screwed to the ball screw block;
a plurality of bearing blocks installed on the bed to rotatably support both ends of the ball screw shaft;
a step motor disposed on the bed parallel to the ball screw shaft; and
and a belt connecting the rotating shaft of the step motor and the pulley of the ball screw shaft to each other. A plurality of pads spaced apart along the perimeter of the pipe and inclined toward the center of the pipe to be installed or separated from the pipe, and the distance between the pads can be variably adjusted to correspond to the size of the pipe clamp module;
a track module that forms an opening for accommodating the pipe in the track housing supported by the clamp module, and rotates the rotor with a plurality of gears provided in the track housing based on the opening;
a welding module for forming an opening corresponding to the opening in the rotating frame mounted on the rotor, and moving the welding head with a plurality of linear actuators provided in the rotating frame based on the opening; and
Including; and a feeder module mounted on the rotating frame to supply the welding wire to the welding head.
The feeder module,
a feeder support coupled to the front surface of the rotating frame so as to protrude from the rotating frame for an equal position with the welding head;
a feeder unit coupled to the feeder support and transferring the welding wire toward the welding head; and
Orbital pipe welding apparatus comprising a; coupled to the side of the casing of the feeder unit with respect to the wire inlet of the feeder unit, and a spool holder for storing the welding wire. A plurality of pads spaced apart along the perimeter of the pipe and inclined toward the center of the pipe to be installed or separated from the pipe, and the distance between the pads can be variably adjusted to correspond to the size of the pipe clamp module;
a track module that forms an opening for accommodating the pipe in the track housing supported by the clamp module, and rotates the rotor with a plurality of gears provided in the track housing based on the opening;
a welding module for forming an opening corresponding to the opening in the rotating frame mounted on the rotor, and moving the welding head with a plurality of linear actuators provided in the rotating frame based on the opening; and
Including; and a feeder module mounted on the rotating frame to supply the welding wire to the welding head.
The clamp module is
a plurality of pad support plates to which the pads are detachably coupled through bolt coupling;
a plurality of moving arms coupled to the pad support plate to correspond to the inclined arrangement of the pad and disposed on one side and the other side with respect to the pipe;
a ball screw block coupled to an upper portion of each of the movable arms;
a clamp shaft screwed to the ball screw block and having left and right screws so as to move the ball screw block closer to each other according to forward rotation or move the ball screw block apart from each other according to reverse rotation;
a rotating handle attached to the end of the clamp shaft;
a bearing block for rotatably supporting the clamp shaft;
a mount frame for supporting the bearing block; and
It includes a; clamp rail installed on the mount frame to slidably support the ball screw block.
An orbital pipe welding apparatus in which the mount frame is provided with a plurality of recesses based on a position between bolted parts of the mount frame to reduce weight, and is coupled to the rear surface of the orbit housing of the orbit module.

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