KR20130051215A - Rail-less welding apparatus - Google Patents

Abstract

PURPOSE: A rail-less welding apparatus is provided to reduce the cost of installing an extra rail by movably attaching a carriage along the weld line of base material by the attractive force of attaching unit. CONSTITUTION: A rail-less welding apparatus comprises a carriage(100), a weld torch part(200), a power supplying unit(300), a power transmitting unit(400), and an attaching unit(500). The carriage includes a first drive wheel(110) and a second drive wheel(120) at the front and back thereof based on the weld line(C) of base material. The weld torch part is connected to the one side of the carriage, and welds the base material along the weld line. The power supplying unit supplies power to the first drive wheel and the second drive wheel. The power transmitting unit transmits the driving force of the power supplying unit to the first drive wheel or the second drive wheel. The attaching unit is installed in the carriage and attaches the carriage to the base material by an attractive force.

Description

Rail-less Welding Apparatus

The present invention relates to a rail-free welding apparatus, and more particularly, to a rail-free welding apparatus that can perform the welding operation while automatically tracking the welding line of the butt joint of the vertical base material without installing a separate rail.

In general, a welding operation for joining a block and a block during construction of the ship is in progress.

Large vessels are manufactured by independently manufacturing blocks of various shapes, and then combining these blocks with each other to build a hull, and the joining of the blocks is performed by welding.

The larger the size of the vessel, the welding work is increased, in the case of large vessels, because hundreds of blocks can be combined to complete it requires very much welding work.

By the way, strong ultraviolet rays, fume, spatter, heat of welding, etc. are generated during the welding operation, so that the welding operation is gradually avoided. In addition, to obtain a good quality weld bead (bead) requires a skilled person, but the number of welding experts are also decreasing trend.

Therefore, various researches and developments for welding automation are in progress, and in particular, an automated welding device is applied to a ship building process. As a representative example of the welding apparatus, welding in a vertical direction is carried out by using a carriage that loads a welding torch and moves automatically.

In addition, the welding method of the butt joint of the block is mainly used EGW method which is advantageous for automation.

The EGW method is a method of shielding a welding part mainly using carbon dioxide gas as a shield gas, and generating an arc in a carbon dioxide gas atmosphere to melt and weld a base metal by arc heat.

On the other hand, in order to allow the carriage to move in the vertical direction of the base material, a rail is installed in parallel with the welding line, and then a method of welding while moving the carriage along the rail is used.

By the way, when using a welding device having the configuration described above in the drying process of a large vessel, there is a disadvantage that a very large number of rails should be installed. In particular, since the weight of the rail attached to the inside and outside of the ship is usually more than 20kg, there was an inconvenience that the operator must repeatedly install and transport the rail.

Recently, as a solution for solving the above problems, as shown in FIG. 1, a configuration capable of performing a welding operation on a vertical base material without installing a rail portion is disclosed in Korean Unexamined Patent Publication No. 2010-0035501 ( Weld line tracking robot).

However, in the welding line tracking robot according to the related art, since the control unit 120 for the multi-axis control is mounted on the carriage 110, the welding time is long due to the delay in movement and preparation due to the weight and volume thereof. There was this.

The present invention has been made to solve the above problems, the object of the invention is to automatically track the weld line of the butt joint of the vertical base material without installing a separate rail, as well as to quickly perform the welding operation To provide a railless welding device.

In order to achieve the above object, the railless welding apparatus according to the present invention,

A carriage having a first driving wheel and a second driving wheel back and forth along the welding line of the base material;

A welding torch unit connected to one side of the carriage and welding the welding line;

Power supply means for supplying power to the first drive wheel or the second drive wheel;

Power transmission means for transmitting the driving force of the power supply means to the first drive wheel or the second drive wheel; And

It is installed in the carriage, characterized in that it comprises an attachment means for attaching the carriage to the base material by the attraction force.

The first driving wheel may include a pair of first wheels spaced apart from each other with the welding line therebetween, and a first rotation shaft connecting the first wheels.

The second driving wheel is composed of a pair of second wheels spaced apart with the welding line therebetween and a second rotation shaft connecting the second wheels,

The length of the second rotating shaft is characterized in that formed longer than the length of the first rotating shaft.

In particular, it is characterized in that it further comprises a welding line tracking means installed in the first driving wheel and rolling in contact with the welding line.

Here, the welding line tracking means is characterized in that the coupling body is formed with a coupling through-hole penetrating one side and the other side, and the first roller and the second roller are respectively installed on one end and the other end of the coupling body.

In addition, the first roller and the second roller is characterized in that the inclined movement direction toward the carriage.

And, the inclination angle of the first roller and the second roller is characterized in that it is variable adjustable within 5 ° ~ 30 °.

On the other hand, the power supply means,

A motor fixed to the carriage,

A worm formed at the tip of the drive shaft of the motor;

And a worm gear that rotates in engagement with the worm and is coupled to the first rotating shaft or the second rotating shaft.

In addition, the power transmission means, characterized in that consisting of a chain or a belt pulley for winding the first rotary shaft and the second rotary shaft connected to each other.

In addition, the attachment means,

Fixed plate,

A magnet disposed below the fixed plate and spaced apart from the base material at a predetermined interval,

It is installed on top of the fixed plate is characterized in that it comprises a spacer member forcibly spaced apart the attraction distance between the magnet and the base material.

Specifically, the spacer member,

A plurality of support members protruding upward of the fixing plate with the carriage interposed therebetween;

A rotation lever penetrating in a direction crossing the support member and extending to one side;

The cam is installed around the rotary lever and rotates according to the rotational direction of the rotary lever and is configured to be in contact with an upper surface of the carriage.

In addition, the magnet is characterized in that it is additionally installed on the first driving wheel and the second driving wheel.

In addition, the welding torch unit,

Welding torch,

A spacing controller for controlling the distance between the welding torch and the welding line by moving the welding torch with respect to the carriage;

It is installed on one side of the gap adjusting portion is characterized in that consisting of an angle adjusting portion for guiding the welding torch rotatable in the circumferential direction.

According to the present invention having the above-described configuration, the carriage is attached to the carriage along the welding line of the base material through the magnet attraction force of the attachment means, thereby reducing the cost by additionally producing a separate rail and at the same time It is effective to omit the work process that needs to be installed on the base material and removed again.

In addition, since the first driving wheel and the second driving wheel of the carriage can be driven simultaneously by the power transmission means, the driving force of the carriage can be further improved, so that the welding progress work can be performed more quickly. .

1 is a front view showing a welding line tracking robot according to the prior art.
Figure 2 is a plan view showing a railless welding apparatus according to an embodiment of the present invention.
Figure 3 is a front view showing a railless welding apparatus according to an embodiment of the present invention.
4 is an enlarged view illustrating the welding line tracking unit of FIG. 2.
5 is an enlarged view illustrating the welding torch of FIG. 3.
6 is a cross-sectional view showing the configuration of the power supply means of FIG.
7 is a side view and a front view showing the configuration and operation of the attachment means of FIG.
8 is a side view showing another embodiment of the attachment means of FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 and 6.

As shown, the railless welding apparatus according to the present invention, the carriage 100 having the first driving wheel 110 and the second driving wheel 120 back and forth along the welding line (C) of the base material, and the carriage Power supply connected to one side of the (100) for supplying power to the welding torch unit 200 for welding the welding line (C) and the first driving wheel 110 or the second driving wheel 120 Means 300 and the power transmission means 400 for transmitting the driving force of the power supply means 300 to the first drive wheel 110 or the second drive wheel 120 and the carriage 100 And attaching means 500 for attaching the carriage 100 to the base material by attraction.

First, the carriage 100 is a plate having a predetermined thickness and length driving along the welding line (C) extending direction of the base material, the thickness and length can be manufactured differently depending on the size of the welding target, the welding path and the working environment. Therefore, the size and shape thereof are not particularly limited.

Here, the fixing plate 510 of the attachment means 500 to be described later is disposed on the surface of the carriage 100 so that the installation space 101 is penetrated to move up and down.

The first and second driving wheels 110 and 120 are installed at the front and the rear of the carriage 100, respectively.

Accordingly, the carriage 100 may be linearly moved with respect to the surface of the base material by the first driving wheel 110 and the second driving wheel 120.

In addition, it is preferable to form a moving handle 130 in the carriage so that the worker can be easily carried in the gripped state.

In detail, the first driving wheel 110 has a pair of first wheels 111 spaced apart from each other with the welding line C interposed therebetween and a first rotation shaft 112 connecting the first wheels 111. The second driving wheel 120 has a second rotation shaft 122 connecting the pair of second wheels 121 and the second wheels 121 spaced apart from each other with the welding line C interposed therebetween. It is composed of

Here, the length of the second rotary shaft 112 may be formed longer than the length of the first rotary shaft 112. This is because the wider the rear wheel space than the front wheel space, the more stable driving is possible.

In addition, the first drive wheel 110 is configured to further include a welding line tracking means 600 to move in a state in contact with the welding line (C).

The welding line tracking means 600 is a coupling body 610 formed with a coupling through hole 611 penetrating one side and the other side, and the first roller 620 is installed at one end and the other end of the coupling body 610, respectively. And a second roller 630.

Here, the first roller 620 and the second roller 630 is preferably installed in an inclined structure so that the moving direction is toward the carriage 100.

This is because the carriage 100 is displaced to one side of the first rotation shaft 112 and the second rotation shaft 122, and the load of the power supply means 300 and the attachment means 500 to be described later is biased. As the driving force difference occurs, the carriage 100 changes to try to rotate to the welding line (C). In this case, the inclination angles of the first roller 620 and the second roller 630 generate frictional resistance with respect to the moving direction of change of the first driving wheel 110 and the second driving wheel 120. Therefore, the first roller 620 and the second roller 630 push the driving force in the opposite direction so that the moving direction of the carriage 100 is not biased toward the welding line (C), thereby, the carriage 100 The path tracking for the welding line C traveling direction can be easily performed.

In addition, the inclination angle of the first roller 620 and the second roller 630 may be made to be variable adjustable within 5 ° ~ 30 °.

On the other hand, the welding torch unit 200 is installed on one side of the carriage 100 performs a welding operation on the welding line (C) in the process of driving the carriage 100 along the welding line (C).

In detail, the welding torch unit 200 is capable of moving the welding torch 210 and the welding torch 210 with respect to the carriage 100 and the carriage 100 to the welding torch 210 and the welding line. (C) the gap adjusting unit 220 for adjusting the distance between, and the angle adjusting unit 230 is installed on one side of the gap adjusting unit 220 to guide the welding torch 210 in a circumferential direction. It is composed of

In addition, the power supply means 300 to supply power to the first driving wheel 110 or the second driving wheel 120, the motor 310 is fixed to the carriage 100 and the motor ( The worm 320 is formed at the tip of the driving shaft of the 310 and the worm gear 330 is engaged with the worm 320 and rotated and coupled to the first rotating shaft 112 or the second rotating shaft 122.

That is, when the worm 320 formed on the driving shaft of the motor 310 rotates, the worm gear 330 rotating in engagement with the worm 320 rotates and the first rotation shaft 112 or the first rotation shaft 112 coupled to the worm gear 330. 2 Rotate the rotating shaft 122.

In addition, the power transmission means 400 transmits the driving force rotated by the power supply means 300 to the first driving wheel 110 or the second driving wheel 120, the first rotation shaft 112 ) And the second rotating shaft 122 is made of a chain or belt pulley method for connecting in a state of mutual winding.

That is, since the first driving wheel 110 and the second driving wheel 120 of the carriage 100 can be simultaneously driven by the power transmission means 400, the driving force of the carriage 100 can be further improved. There is an effect that can quickly perform the welding progress work.

The chain or belt pulley method is a well-known technique generally used in the art, and detailed construction and operation thereof will be omitted.

On the other hand, the attachment means 500 is installed on the carriage 100 serves to attach the carriage 100 to the base material by the attraction force.

As shown in FIG. 7, the attachment means 500 includes a fixed plate 510 disposed in the installation space 101 of the carriage 100 and a lower portion of the fixed plate 510 and is disposed from a base material. The magnet 520 is spaced at a predetermined interval, and is provided on the fixed plate 510 is configured to include a spacer 530 for forcibly spaced apart the distance between the magnet 520 and the base material.

The magnet 520 acts as a magnetic force in a state spaced apart from the base material which is a steel at a predetermined interval so that the carriage 100 is not separated from the base material.

The magnets 520 may be installed in plural numbers according to the size and shape of the carriage 100 (see FIG. 8).

In addition, the magnet 520 may be additionally installed on the first driving wheel 110 and the second driving wheel 120 (see FIG. 1).

That is, the carriage 100 can be attached to the base material by the magnet 520, not only does not need to install a separate rail, but also has the effect that the work process to install and remove the rail can be omitted.

In particular, the spacer 530 is for the operator to easily detach the carriage 100 attached to the base material by the magnet 520 of the fixing plate 510 with the carriage 100 interposed therebetween. A plurality of support members 531 protruding upwards, a rotation lever 532 extending in one side through the support member 531 in a direction crossing the support member 531, and installed around the rotation lever to rotate the rotation lever It consists of a cam which rotates in a direction and is in contact with the upper surface of the carriage.

That is, when the rotation lever 532 is rotated in the pushing or pulling direction, the cam 533 connected to the rotation lever 532 rotates together, and thus the cam is caused by the rotation radius deviation (eccentricity) of the cam 533. The outer circumferential portion of the 533 presses the upper surface of the carriage 100. At this time, the magnet 520 fixed to the fixed plate 510 is also raised in the process of raising the fixed plate 510 by the eccentric amount of the cam 533, so that the magnet 520 from the base material Since the suction force is weakened by the distance away, the carriage 100 can be easily separated from the base material.

In addition, it is preferable that the spacer 530 does not operate unless the rotation lever 532 is artificially rotated by configuring a spring lock device.

According to the present invention configured as described above, the carriage 100 is movably attached along the welding line C of the base material through the magnet 520 suction force of the attachment means 500, thereby additionally producing a separate rail. The cost can be reduced and at the same time it is possible to omit the work process that requires the rail to be installed on the base material and removed again.

In addition, since the first driving wheel 110 and the second driving wheel 120 of the carriage 100 can be simultaneously driven by the power transmission means 400, the driving force of the carriage 100 can be further improved. There is an effect that can be carried out even faster welding.

100: carriage
110: first driving wheel
111: first wheel
112: first rotation axis
120: second driving wheel
121: second wheel
122: second axis of rotation
200: welding torch
230: first roller
240: second roller
300: power supply means
400: power transmission means
500: attachment means
510: fixed plate
520: Magnet
530: spacer

Claims (12)

A carriage having a first driving wheel and a second driving wheel back and forth along the welding line of the base material;
A welding torch unit connected to one side of the carriage and welding the welding line;
Power supply means for supplying power to the first drive wheel or the second drive wheel;
Power transmission means for transmitting the driving force of the power supply means to the first drive wheel or the second drive wheel; And
The railless welding apparatus is installed on the carriage, comprising an attachment means for attaching the carriage to the base material by the attraction force.
The method of claim 1,
The first driving wheel is composed of a pair of first wheels spaced apart from each other with the welding line therebetween and a first rotation shaft connecting the first wheels.
The second driving wheel is composed of a pair of second wheels spaced apart with the welding line therebetween and a second rotation shaft connecting the second wheels,
The length of the second rotating shaft is a railless welding apparatus, characterized in that formed longer than the length of the first rotating shaft.
The method of claim 1,
And a welding line tracking means installed on the first driving wheel to move the rolling in contact with the welding line.
The method of claim 3,
The welding line tracking means,
And a coupling body having a coupling through-hole penetrating one side and the other side, and a first roller and a second roller installed at one end and the other end of the coupling body, respectively.
5. The method of claim 4,
And the first roller and the second roller are inclined so that the moving direction is toward the carriage side.
The method of claim 5,
The inclination angle of the first roller and the second roller is a railless welding device, characterized in that the variable adjustment within 5 ° ~ 30 °.
The method of claim 2,
The power supply means,
A motor fixed to the carriage,
A worm formed at the tip of the drive shaft of the motor;
The railless welding device, characterized in that consisting of a worm gear is engaged with the worm and coupled to the first or second rotary shaft.
The method of claim 7, wherein
The power transmission means, the railless welding device, characterized in that consisting of a chain or a belt pulley for winding the first rotary shaft and the second rotary shaft connected to each other.
The method according to any one of claims 1 to 8,
The attachment means,
Fixed plate,
A magnet disposed below the fixed plate and spaced apart from the base material at a predetermined interval,
It is installed on the top of the fixing plate, the railless welding device, characterized in that it comprises a spacer member forcibly spaced apart the attraction distance between the magnet and the base material.
10. The method of claim 9,
The spacer member,
A plurality of support members protruding upward of the fixing plate with the carriage interposed therebetween;
A rotation lever penetrating in a direction crossing the support member and extending to one side;
And a cam installed around the rotary lever and configured to rotate in a rotational direction of the rotary lever and to be in contact with an upper surface of the carriage.
10. The method of claim 9,
And the magnet is additionally installed on the first driving wheel and the second driving wheel.
The method according to any one of claims 1 to 8,
The welding torch unit,
Welding torch,
A spacing controller for controlling the distance between the welding torch and the welding line by moving the welding torch with respect to the carriage;
It is installed on one side of the gap adjusting portion, the railless welding device, characterized in that consisting of an angle adjusting portion for guiding the welding torch in the circumferential direction.

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