KR20180045273A - Grinding device for weld bead of pipe - Google Patents

Abstract

Disclosed is an apparatus for grinding pipe welding bead, having a simple structure, effectively controlling the position of a grinder, maximizing grinding efficiency, and capable of being replaced in accordance with a curved shape or a size of a pipe to increase compatibility. The apparatus for grinding pipe welding bead comprises: a grinder main body moving in the circumferential direction of the pipe; a grinder rotationally disposed in the grinder main body; and a grinder motor providing rotation power for the grinder. Moreover, the present invention provides a plurality of the grinders, and each of the grinders are spaced in the circumferential direction of the pipe.

Description

Technical Field [0001] The present invention relates to a welding apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a piping weld bead pouring apparatus, and more particularly, to a piping weld bead pouring apparatus in which a weld bead of a pipe is mapped and flattened with respect to a piping surface.

Generally, welding work of welding beads is required to perform ultrasonic testing (UT: Ultrasonic Testing) of piping.

That is, since the surface of the weld bead is not smooth, irregular reflection occurs when the ultrasonic wave is incident, and it is difficult to detect defects. In the case of materials such as SUS and the like, the texture must be tight and the ultrasonic wave must be directly incident on the weld bead. In this case, the welding operation is performed such that the weld bead is flush with the surface of the pipe.

Conventionally, in many cases, the worker has arbitrarily performed the welding bead mapping operation with the grinder, the work is time-consuming, the welding is not performed precisely, the welding is performed more deeply than the pipe surface, and the inspection is often delayed.

In order to solve such a problem, Korean Patent Registration No. 10-1363511 (Apr. 20, 2014), which was previously filed, discloses a grinding apparatus for piping welds.

However, the conventional grinding apparatus has a structure in which the position of the grinder can not be efficiently controlled, and there is a problem that the fusing efficiency is lowered. In addition, the conventional grinding apparatus is difficult to suitably be applied according to the shape and size of the curved pipe, and the structure is complicated, resulting in an increase in manufacturing cost.

Korean Registered Patent No. 10-1363511 (Apr. 20, 2014)

In order to solve such a conventional problem, the present invention has a simple structure and can efficiently control the position of the grinder, maximize the finishing efficiency, and appropriately change the shape according to the shape and size of the pipe, Thereby providing a welded pipe bead joint device.

A piping weld bead threading apparatus according to the present invention comprises: a grinder body moving along a circumferential direction of a pipe; A grinder rotatably mounted on the grinder body; And a grinder motor for providing rotational power to the grinder, wherein the grinder is provided in a plurality, and each of the grinders is arranged along the circumferential direction of the pipe.

According to another aspect of the present invention, there is provided a piping weld bead throwing apparatus comprising: a grinder body moving along a circumferential direction of a pipe; A grinder rotatably provided on the grinder main body and having a rotation axis parallel to a longitudinal direction of the pipe; And a grinder motor for providing rotational power to the grinder; A grinder position adjuster for pressing the grinder toward a welding portion of the pipe or pressing the grinder in a direction opposite to the welding portion; And a drive control switch provided on one surface of the grinder body facing the pipe to stop driving the grinder motor when the pipe contacts the surface of the pipe.

It is possible to efficiently control the position of the grinder and to maximize the welding efficiency and to suitably change the shape according to the shape and the size of the pipe, thereby improving the compatibility of the pipe welding bead have.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a state before a welding bead of a pipe welding bead threading device according to an embodiment of the present invention,
2 is a front view showing the interior of a pipe welding bead mapping apparatus according to an embodiment of the present invention,
3 is a front view showing a state after a welding bead pattern of a pipe welding bead threading device according to an embodiment of the present invention,
4 is a cross-sectional view taken along the line AA in Fig. 1,
5 is a sectional view taken along line BB in Fig. 1,
FIG. 6 is a cross-sectional view taken along line CC of FIG. 1,
7 is a cross-sectional view showing a coupled state of a rail and a mover moving device of a pipe welding bead mover according to an embodiment of the present invention,
8 is a flowchart showing an example of use of a pipe weld bead mapping apparatus according to an embodiment of the present invention,
Figs. 9 to 11 show the installation process of the mover device according to the use example of Fig. 8 in order.

Hereinafter, the technical configuration of the pipe welding bead mapping device will be described in detail as follows.

FIG. 1 is a front view showing a state before welding bead formation of a pipe welding bead welding apparatus according to an embodiment of the present invention, and FIG. 2 is a front view showing the interior of a pipe welding bead welding apparatus according to an embodiment of the present invention. And FIG. 3 is a front view showing a state after the welding bead pattern of the pipe welding bead threading device according to the embodiment of the present invention. FIG. 4 is a sectional view taken along line AA of FIG. 1, FIG. 6 is a cross-sectional view taken along a line CC in FIG. 1, and FIG. 7 is a cross-sectional view showing a combined state of a rail of a pipe welding bead threading device and a moving device of a threading device according to an embodiment of the present invention.

1 to 7, a pipe weld bead mapping apparatus 100 according to an embodiment of the present invention includes a rail 110, a moving device 110, a grinder support 130, A main body 140, a grinder 180, and a grinder motor 161.

The rail 110 is coupled in the circumferential direction of the pipe 199. The rail 110 serves as a sliding guide for the moving device 120, which will be described later. The rail 110 is composed of a plurality of rail elements 110a and 110b and the rail elements 110a and 110b are detachably connected to each other through a node connection part 115. [ The rail 110 may be fixed to the pipe 199 by a tension hook or the like.

With this configuration, the number of rail elements can be increased or decreased according to the size of the piping, and it is possible to easily install the piping system appropriately for various piping sizes. The rail 110 is configured such that the shifting device moving body 120 is not separated from the piping 199 at any position. The rail 110 is formed in a chain shape in which the outer circumferential surface of the pipe 199 is wound. The rail 110 is made up of semi-cylinders.

The mover device moving body 120 is slidably connected to the rail 110. The shifting device moving body 120 includes a moving body wheel 112 provided so as to be able to run along the rail 110, a shifting device moving motor 121 and a shifting device moving motor 121, And a moving body driving shaft 113 for transmitting the moving body. The moving mechanism 120 is provided with a support fixing holder 125 for detachably coupling the grinder support 130.

That is, the mover device moving body 120 is connected to the rail 110 and is configured to move along the rail 110 by locating the moving vehicle wheel 112 therein. The moving object wheel 112 is connected to the mapping device moving motor 121 through the moving object driving shaft 113 to be driven. A support fixing holder 125 in the form of a quick coupler is disposed on the upper side of the mover 120 to be coupled to a grinder support 130 to be described later.

The grinder support 130 is coupled to the mover moving body 120 and fixedly supports the grinder body 140. The grinder support 130 has a shape extending vertically from the moving device 120 and a pair of the grinder supports 130 are spaced apart from each other by a welded portion 198 of the pipe 199.

The grinder body 140 performs a function of a main frame and a housing of the mover device and is configured to be movable between the pair of grinder supports 130 so as to be movable along the circumferential direction of the pipe 199.

The grinder 180 is rotatably provided in the grinder body 140, and the rotation axis is parallel to the longitudinal direction of the pipe 199. The grinder motor (161) provides rotational power to the grinder (180). The plurality of grinders 180 are provided, and the respective grinders 180 are arranged along the circumferential direction of the pipe.

The rotary shafts of the respective grinders are arranged in parallel with the longitudinal direction of the pipe 199, and the grinders 180 are arranged corresponding to the curved shape of the pipe 199. In this case, the rotating shaft of the grinder is the grinder driving shaft 182. The grinders 180 are provided in three or more, and three grinders are used in the present embodiment. The three grinders 180 are rotated by a single grinder motor 161. That is, the first grinder 180a, the second grinder 180b, and the third grinder 180c are arranged in order along the curved shape of the pipe 199. [

More specifically, in the grinder body 140, a motor driving gear 163 connected to the grinder motor 161, an idle gear 173 engaged with the motor driving gear 163, an idle gear 173 The grinder drive gear 183 is engaged with the grinder drive gear 183. A grinder driving shaft 182 connected to the grinder driving gear 183 is connected to a grinder 180.

The idle gear 173 is coupled to the idle gear shaft 172 and the grinder drive shaft 182, the idle gear shaft 172 and the motor drive shaft 162 are sequentially positioned from the surface of the pipe 199. The motor drive shaft 162 is a rotation shaft of the grinder motor 161. The motor drive shaft 163 is coupled to the motor drive shaft 162. The idle gear 173 is coupled to the idle gear shaft 172, A grinder drive gear 183 is coupled to the drive shaft 182.

4, there is one motor drive shaft 162 and two idle gear shafts 172 are provided below the motor drive shaft 162 so that two idle gears 173 are connected to the motor drive gears 163). Three grinder drive shafts 182 are provided below the idle gear shaft 172 to engage the three idler gears 173 with three grinder drive gears 183.

With this structure, the number of the motor drive shaft, the idle gear shaft, and the grinder drive shaft increases in a pyramid-shaped manner as the number of the motor drive shaft, the idle gear shaft, and the grinder drive shaft increases sequentially.

In summary, the grinder 180 is made of three pieces (at least two or more pieces) and is run in the circumferential direction of the pipe 199 to grind the weld bead 197 to be flat against the surface 199a of the pipe 199 . 3, the bead surface 197a is parallel to the surface 199a of the pipe, so that the bead does not protrude or recess concavely from the pipe surface.

The three-wheeled grinder is arranged in the circumferential direction of the pipe and arranged in accordance with the curved shape of the pipe, so that it is possible to stably and maximize the efficiency of the finishing, and the moving device 120 can also move in accordance with the curved shape of the pipe .

Further, the mapping device 120 is further provided with a rotation knob 131 and a controller 196. The mover device 120 is configured to selectively set the traveling of the mover device moving body 120 to a passive mode or an automatic mode.

The rotary knob 131 is provided in the grinder support 130 so as to be gripped by the operator's hand in the manual mode. In the manual mode, after the position of the grinder 180 is adjusted, the grinder 180 is operated to rotate, and the rotary knob 131 is held and rotated around the pipe 199.

The controller 196 controls the execution of the mapping operation in the stored sequence according to the piping specification input in the automatic mode. When the piping specification is input to the controller 196 after setting the mapping device to the piping, and the mode is set, the mapping device 120 maps the welding bead while rotating 360 degrees about the pipe 199. It is preferable that an encoder for recognizing and controlling the moving distance of the mapping device is provided in the moving device 120.

In addition, the mapping device 120 includes a grinder position adjustment section and a drive control switch 150. Fig.

The grinder position adjustment section presses the grinder 180 toward the welding section 198 of the pipe 199 or presses the grinder 180 in the direction opposite to the welding section 198. The grinder position adjustment unit includes a first magnet unit 210 coupled to the grinder support 130 side and a second magnet unit 220 coupled to the grinder motor 161 side. The first magnet part 210 and the second magnet part 220 are for performing position control of the grinder, and may be constructed of superconducting magnets.

In addition, the grinder motor 161 and the grinder 180 are configured to be linearly movable in the pressing direction of the grinder position adjustment unit. The grinder support 130 is provided with a motor drive shaft root 166 for guiding the linear movement of the motor drive shaft 162 which is the rotation axis of the grinder motor 161 and a motor drive shaft 166 for guiding the linear movement of the grinder motor 161 . The grinder support 130 includes a motor drive shaft root 166 for guiding the motor drive shaft 162 to move up and down.

The first magnet part 210 and the second magnet part 220 are formed in the same pole so that the grasping force of the grinder 180 on the welding bead 197 acts on the welding bead 197 during the welding operation, The first magnet part 210 and the second magnet part 220 are formed with different poles so that the grinder 180 moves to the opposite side where the grinder 180 is mapped.

The grinder support 130 is provided with a motor route 165 for guiding the grinder motor 161 so as to stably move in the grinder support 130.

The drive control switch 150 is provided on one surface of the grinder body 140 facing the pipe 199 and stops driving the grinder motor 161 when it contacts the surface 199a of the pipe 199. Therefore, when the weld bead surface is mapped to the same position as the pipe surface, the grinder is automatically stopped and the thread take-up device can be driven in the circumferential direction of the pipe.

8 is a flowchart showing an example of use of a pipe welding bead mapping apparatus according to an embodiment of the present invention, and FIGS. 9 to 11 illustrate the installation process of the mapping apparatus according to the use example of FIG. 8 in order will be.

8 to 11, the length of the rail 110 is adjusted according to the specifications of the pipe 199. Thereafter, after the mover moving body 120 is mounted on the rail 110, the grinder support 130 is coupled to the mover moving body 120. [ In FIG. 10, a grasping support 130 is provided with a support fixing part 137 to be coupled to a support fixing holder 125 provided in the mover 120.

Thereafter, the position of the grinder is set so that the grinder 180 is brought into contact with the weld bead 197, and then the manual feed mode is selected from the manual mode or the automatic mode. In the manual mode, the grinder 180 is rotated, and the rotary knob 131 is rotated. In automatic mode, input the piping specifications and perform the mapping operation according to the stored sequence.

Although the pipe welding bead mapping apparatus according to the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that various modifications and equivalent embodiments are possible without departing from the scope of the present invention by those skilled in the art . Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

100:
110: rail 120: moving device
130: Grinder support 140: Grinder main body
150: drive control switch 161: grinder motor
180: Grinder 199: Piping

Claims (12)

A grinder body 140 moving along the circumferential direction of the pipe 199;
A grinder 180 rotatably mounted on the grinder body 140; And
And a grinder motor (161) for providing rotational power to the grinder (180)
Wherein the plurality of grinders (180) are provided, and each of the grinders (180) is spaced apart along the circumferential direction of the pipe. The method according to claim 1,
Wherein the rotary shafts of the respective grinders are arranged parallel to the longitudinal direction of the pipe (199), and the grinders (180) are arranged corresponding to the curved shape of the pipe (199). 3. The method of claim 2,
Wherein the grinder (180) is provided in three or more and is rotated by a single grinder motor (161). 3. The method of claim 2,
A motor driving gear 163 connected to the grinder motor 161, an idle gear 173 engaged with the motor driving gear 163, and a grinder driving gear 183 engaged with the idle gear 173 , And a grinder (180) is coupled to a grinder drive shaft (182) connected to the grinder drive gear (183). The method according to claim 1,
A rail 110 coupled in the circumferential direction of the pipe 199;
A traveling device moving body 120 slidably connected to the rail 110; And
And a grinder support (130) coupled to the mover moving body (120) and fixedly supporting the grinder main body (140). 6. The method of claim 5,
The rail (110)
Wherein each of the rail element bodies (110a) and (110b) is detachably connected to the rail element body (110a) (110b) through a node connection part (115). 6. The method of claim 5,
The mover device moving body 120 includes a moving body wheel 112 provided so as to be able to run along the rail 110, a mover device moving motor 121, 112) of the movable body drive shaft (113). 6. The method of claim 5,
Wherein the mover moving body (120) is provided with a support fixing holder (125) for detachably coupling a grinder support (130). 6. The method of claim 5,
The travel of the mover device moving body 120 can be selectively set in a manual mode or an automatic mode,
In the manual mode, the grinder support 130 is provided with a rotary knob 131 so as to be grasped by the operator's hand,
An encoder for recognizing the moving distance is provided to the mapping apparatus moving body 120,
And a controller (196) for controlling the execution of the mapping operation in the stored sequence in accordance with the input piping specification in the automatic mode. A grinder body 140 moving along the circumferential direction of the pipe 199;
A grinder 180 rotatably mounted on the grinder body 140 and having a rotation axis parallel to the longitudinal direction of the pipe 199;
A grinder motor (161) for providing rotational power to the grinder (180);
A grinder position adjustment unit for pressing the grinder 180 toward the welding portion 198 of the pipe 199 or pressing the grinder 180 toward the welding portion 198; And
And a drive control switch 150 provided on one surface of the grinder main body 140 facing the pipe 199 to stop the driving of the grinder motor 161 when it contacts the surface 199a of the pipe 199 Characterized by a tubular weld bead threading device. 11. The method of claim 10,
A rail 110 coupled in the circumferential direction of the pipe 199;
A traveling device moving body 120 slidably connected to the rail 110; And
And a grinder support (130) coupled to the mover moving body (120) and fixedly supporting the grinder main body (140)
The grinder position adjustment unit includes a first magnet unit 210 coupled to the grinder support 130 side and a second magnet unit 220 coupled to the grinder motor 161 side. Welding bead mast. 12. The method of claim 11,
The grinder motor 161 and the grinder 180 are configured to be linearly movable in the pressing direction of the grinder position adjusting unit,
The grinder support 130 is provided with a motor drive shaft root 166 for guiding the linear movement of the motor drive shaft 162 which is the rotation axis of the grinder motor 161 and a motor drive shaft 166 for guiding the linear movement of the grinder motor 161 Is provided on the upper surface of the pipe.

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