KR20200055386A - Hybrid type fillet auto carriage - Google Patents

Abstract

The present invention relates to a technology for a hybrid fillet auto carriage having a total of three electrodes, two tandem electrodes, and one hot wire electrode. The hybrid fillet auto carriage can ensure high welding speed, can reduce arc interference between the tandem electrodes, and has a compact structure to reduce a distance between the electrodes.

Description

Hybrid fillet auto carriage device

The present invention relates to a welding apparatus, and more specifically, to a three-electrode fillet auto carriage using three electrodes.

The present invention relates to a fillet auto carriage, and is a technology for a three-electrode fillet auto carriage using arc welding and hot wire. In general, various automatic welding devices have been developed and used according to surrounding factors such as the shape and shape of the object to be welded, the bonding direction between the objects to be welded, the welding direction, and characteristics of the welding operation.

As arc welding, there are AC arc welding when using AC, DC arc welding when using DC, manual welding, semi-automatic arc welding, and automatic arc welding depending on the degree of automation. As a typical arc welding method, sheathed arc welding using a coated arc welding rod, submerged arc welding that automatically generates an arc between the welding wire and the base material in a flux, and an inner performed in an inert gas such as argon or helium. Gas arc welding, carbon dioxide arc welding, which is performed automatically or semi-automatically in a carbon dioxide gas atmosphere.

In particular, the apparatus using the electric gas arc welding method is used for welding thick plates having a plate thickness of 8 mm or more when manufacturing ships. In this case, the heat input generated in the welded portion of the plate to be welded is increased, resulting in undercut and poor fusion. In addition, the thicker the thickness of the plate to be welded, the lower the welding speed.

In the work site of a ship where welding work of various materials is performed, it will be common to weld a shape having a certain shape, such as H-beam and I-beam. In the case of welding such a shape, since the welding line is in a straight line, a welding device that moves linearly at a constant speed rather than manual welding, that is, a welding torch is mounted on the autocarrier, and the autocarrier travels while welding. The torch is operated so that the uniform welding of the shape material is achieved.

(Prior Art 1) Patent Publication No. 10-2013-0015226 (Prior Art 2) Patent Publication No. 10-2015-0038035

An object of the present invention is to provide a fillet auto carriage capable of high-speed horizontal fillet welding of 100 to 200 cpm.

In addition, an object of the present invention is to provide a fillet auto carriage capable of welding one molten pool by minimizing physical interference while minimizing the distance between electrodes (15 to 40 mm).

The present invention is a leading electrode, a trailing electrode for generating an arc for welding, respectively; And There is provided a hybrid fillet auto carriage including a hot wire electrode positioned between the preceding electrode and the succeeding electrode.

In particular, the distance between the preceding electrode and the trailing electrode is preferably 15 to 40 mm.

In particular, it is preferable that the hot wire is fused to the base material by using arc heat of the preceding electrode and the following electrode, without a separate melting heating source.

In particular, the X-axis slide adjustment handle that enables the X-axis movement of the preceding electrode and the following electrode; A Y-axis slide adjustment handle that enables Y-axis movement of the preceding electrode and the following electrode; A work angle adjusting handle for adjusting a work angle of the preceding electrode and the following electrode; A tilting adjustment handle enabling adjustment of a travel angle, which is an angle with respect to the base material of the preceding electrode and the following electrode; And it may further include a CTWD control handle for adjusting the distance to the base material of the preceding electrode and the following electrode.

In particular, the preceding electrode and the trailing electrode are each mounted on a clamp, Each clamp is provided with a clamp holder at the bottom, wherein the clamp holder comprises a horizontal portion, an inclined portion forming an obtuse angle with the horizontal portion, and a rotation axis that is a rotation center of the horizontal portion and the inclined portion, thereby forming a V-shape as a whole. When the horizontal portion moves up and down by adjusting the forward or reverse rotation of the tilting control handle on the upper portion of the horizontal portion, the inclined portion may be moved in the opposite direction to the horizontal portion around the rotation axis.

In particular, the clamp is fixed in parallel to the inclined portion, and the CTWD can be adjusted by moving the clamp in parallel along the guide groove of the inclined portion by forward or reverse rotation of the CTWD control valve located in the inclined portion.

In particular, the hybrid fillet auto carriage can move the hot wire clamp equipped with the hot wire electrode along the base positioned at the bottom and the straight groove formed in the base in the X axis.

In particular, the preceding electrode and the following electrode may be flux cored wire.

In the present invention, it is possible to stably weld at a very high speed by welding through two hybrid electrodes of a hot wire electrode, which is located between two tandem electrodes that generate an arc and the two electrodes, but does not generate an arc. have. For example, in the present invention, since welding is simultaneously performed on three electrodes, high-speed horizontal fillet welding of 100 to 200 cpm is possible.

In addition, in the present invention, the hot wire electrode is positioned between the two tandem electrodes, and there is an effect of reducing the arc interference occurring between the two tandem electrodes through the hot wire located in the middle.

1 is a view for explaining three electrodes of the present invention.
2 is a front view of the fillet auto carriage of the present invention.
3 is a view for explaining the X-axis movement of the clamp in the fillet auto carriage of the present invention.
4 is a view for explaining the Y-axis movement of the clamp in the fillet auto carriage of the present invention.
5 is a view for explaining the adjustment of the travel angle (Travel Angle) in the fillet auto carriage of the present invention.
6 is a view for explaining the control of the CTWD in the fillet auto carriage of the present invention.
7 and 8 are views for explaining the X-axis movement of the hot-fire clamp and clamp in the present invention.

In the present invention, two arc welding possible electrodes and a separate hot wire between the two electrodes without a heat source for melting (there is a device for increasing the temperature of the hot wire before welding) occurs at the two electrodes It relates to a hybrid fillet auto carriage consisting of a total of three electrodes, including a hot wire electrode, which is a welding rod fused by arc heat. In the present invention, "hybrid" uses a hybrid in the sense that two different types of electrodes of different types of hot wires and two tandem electrodes where the arc occurs.

Hereinafter, the configuration of the present invention will be described with reference to the drawings.

Hybrid electrode structure

1 is a view showing three electrodes of the present invention. Although the preceding electrode and the trailing electrode are changed according to the moving direction, for convenience of explanation, the electrode located at the left end is referred to as the preceding electrode 11 and the electrode located at the right end is referred to as the following electrode 21 for convenience of description. A hot wire electrode 31 without a separate arc is positioned between the two preceding and trailing electrodes 11 and 21.

The two leading and trailing electrodes 11 and 21 are the same electrode, and both electrodes capable of ordinary arc welding are possible. Representatively, they may be flux cored wires. The present invention is characterized in that welding is performed with the base material 200 through three electrodes of the tandem-structured electrode and the hot wire electrode.

The hot wire electrode 31 is an electrode whose temperature is increased by high heat before welding, and the present invention is melted by the arc heat of the two electrodes 11 and 21 in the middle between the preceding electrode 11 and the succeeding electrode 21. In addition to being welded to the base material 200, the arc generated between the two leading and trailing electrodes 11 and 21 interferes with each other, resulting in excessive arcing of sparks. It serves to prevent the effect. Therefore, in the present invention, the hot wire electrode 31 not only contributes to an improvement in welding speed, but also can prevent an arc interference effect. In particular, in the present invention, in order to prevent the arc between the preceding electrode 11 and the trailing electrode 21 from interfering with each other, the polarity of the hot wire electrode 31 is opposite to the leading electrode 11 and the trailing electrode 21. It can be made to have the polarity of. 1 shows an example in which the leading electrode 11 and the trailing electrode 21 are “+” polarity, and the hot wire 31 is “-” polarity.

In the present invention, through the hybrid system using three electrodes as described above, it is possible to perform high-speed welding of 100 to 200 cpm as well as the preceding electrode 11 and the following electrode 21 due to the hot wire electrode 31 located in the middle. Close the distance of, for example, by minimizing the distance between the leading and trailing electrodes (15 to 40 mm) while minimizing physical interference, it is possible to weld a single molten pool.

2 is a front view of the fillet auto carriage 100 of the present invention. Referring to FIG. 2, the fillet auto carriage 100 of the present invention is a pair of tandem electrodes, the leading electrode 11 and the trailing electrode 21 are fixed in the clamps 10 and 20, respectively, and external through the clamp. Power is supplied from or from an internal battery. On the other hand, between the clamps 10 and 20, the hot wire electrode 31 is also located in the hot wire clamp 30.

The three clamps (10, 20, 30) are located on the base 40 corresponding to the body of the carriage located at the bottom, and the X-axis, Y-axis, and travel angle of the base 40 and the clamps 10, 20 (travel angle, the angle between the electrode tip and the base material), CTWD (contact tip to work distance, distance between the electrode tip and the base material), means to adjust the work angle (angle between the leading and trailing electrodes) is provided do. In addition, the control box 50 is located on one side of the base 40, and the control box 50 is provided with a handle 51 serving as a handle. The control box 50 is provided with conventional control means such as a control unit and a reduction gear, but is not shown in the drawings. It is possible to move the fillet auto carriage 100 of the present invention by having one or more wheels 60 on the bottom or side of the base 40. In addition, a motor that supplies power for the movement of the fillet auto carriage 100 is provided at an appropriate position of the base plate 40, for example, on the side.

Since the clamps 10 and 20 for fixing the leading electrode 11 and the trailing electrode 21 are the same structure, the clamp 10 for the leading electrode 11 will be described as an example.

In the present invention, the clamp (10, 20) and the hot wire clamp (30) equipped with the leading and trailing electrodes (11, 21) can be moved or adjusted in various directions. Hereinafter, the movement in each direction or the angle adjustment will be described. In particular, the hot wire clamp 30 is coupled to the clamps 10 and 20 for the leading and trailing electrodes and can move together with the movements of the clamps 10 and 20 for the leading and trailing electrodes. The movement and angle adjustment in various directions of 20) will be described.

X axis movement

3 is a view for explaining that the clamp 10 slides on the X-axis by the X-axis slide adjustment handle 42, and the clamp holder 70 (refer to FIG. 5) by rotation of the X-axis slide adjustment handle 42. Moves on the X axis. Clamp holder (70) provided with the X-axis slide adjustment handle (42) between the base (40) and the clamp (10), and mounted with the clamp (10) according to the forward or reverse rotation of the X-axis slide adjustment handle (42) (70) ) Moves on the X axis. The X-axis slide movement is a structure in which the clamp holder 70 moves along the groove-shaped guide, and the structure having a thread corresponding to it by rotation of the X-axis slide adjustment handle 42 formed with a thread as an axis of the guide. Since the in-clamp holder 70 moves in the X-axis, it can be implemented by various known methods, and thus, detailed description will be omitted in the present invention.

Y axis movement

4 is a plan view of the carriage 100 of the present invention, by rotating the Y-axis slide adjustment handle 44, an example of Y-axis movement of the clamp 10 is schematically illustrated.

The Y-axis movement of the clamp 10 also moves along the guide by the forward or reverse rotation of the Y-axis slide adjustment handle 44 located at the rear end of the clamp holder 70, and the entire clamp holder 70 moves along the Y-axis. , Accordingly, the clamp 10 mounted on the clamp holder 70 also moves in the Y axis. The structure in which the clamp holder 70 having a screw thread corresponding to the screw thread moves in the Y axis by forward or reverse rotation of the handle with the screw thread is a known technique, so a detailed description thereof will be omitted.

Adjusting the work angle

Referring to FIG. 1, a work angle that is an angle between two electrodes 11 and 21 or two clamps 10 and 20 includes a work angle adjustment handle 43 provided in each clamp 10 and 20. Is controlled through. Each clamp (10, 20) according to the forward or reverse rotation of the work angle adjustment handle 43 is rotated around the work angle adjustment handle 43 or its surroundings. Since this rotation can be implemented by various known methods such as two interlocking gears (or screws), a detailed description of the structure will be omitted.

Adjust Travel Angle

5 is a view for explaining a method for adjusting the travel angle (Travel Angle), which is the angle between the clamp 10 and the base material 200, for convenience of explanation, other configurations other than the clamp 10 and the clamp holder 70 are omitted. It is one drawing. In the present invention, the travel angle means an angle that the preceding electrode 11 or the clamp 10 has up and down between the base material 200 as shown in FIG. 5.

In order to adjust the travel angle, a clamp holder 70 is formed at the lower portion of the clamp 10 to form a "V" shape on an approximately side forming an obtuse angle (angle of 90 degrees or more). The clamp holder 70 includes a horizontal portion 72 that is approximately horizontal with the base 40 and an inclined portion 73 that forms an obtuse angle (above 90 degrees) with the horizontal portion 72, and the horizontal portion 72 ) And the rotating shaft 71 in the middle of the inclined portion 73. A tilting adjustment handle 45 having a thread is positioned on the upper portion of the horizontal portion 72, and when the horizontal portion 72 rises according to forward or reverse rotation of the tilting control handle 45, the rotation axis 71 is centered. As the inclined portion descends, on the contrary, when the horizontal portion 72 descends, the inclined portion 73 rises, that is, the inclined portion 73 tilts through a seesaw operation around the rotating shaft 71. By tilting the portion 73, the clamp 10 mounted on the inclined portion 73 is tilted, so that the travel angle that is the inclination between the clamp 10 and the base material 200 is controlled.

CTWD adjustable

6 is a view for explaining a CTWD (Contat Tip to Work Distance) adjustment method. In FIG. 6, the clamps 10 and clamp holders 70, which are components necessary for explanation, are schematically illustrated.

CTWD refers to the distance between the electrodes 11, 21, 31 and the base material 200, and in the state where the clamp 10 is mounted on the inclined portion 73 of the clamp holder 70, the lower portion of the inclined portion 73 In accordance with the forward or reverse rotation of the CTWD adjustment handle 46 located at the relative position, the clamp 10 moves along the guide groove (not shown) formed in the inclined portion 73, thereby reducing the distance from the base material 200. Is regulated.

Adjust the horizontal distance of the hot wire clamp (30)

7 and 8 are views for explaining the horizontal movement of the hot wire clamp 30. 7 and 8, for convenience of explanation in addition to the base 40 and the hot wire clamp 30, the clamps 10 and 20 for mounting the clamp holder 70 and the leading and trailing electrodes 11 and 21 are omitted.

Two guide grooves spaced at least parallel to the base 40 are formed, and there is a first guide groove 47 and a second guide groove 48, and a hot wire clamp 30 along the first guide groove 47 ) Can move on the X axis. On the other hand, between the clamp holder 70 and the base 40, the clamp holder support portion 81, 82 on which the clamp holder 70 is placed is installed, and any one or more of the clamp holder support portions 81, 82 is made. 2 The X axis moves along the guide groove (48). The X-axis movement of the clamp holder support portions 81 and 82 may be realized by the relative movement between the threaded handle and the corresponding threaded structure, but is not limited thereto.

In the present invention, relatively large movement to the X-axis is realized through adjustment of the clamp holder support portions 81 and 82 along the second guide groove 48 described above, and relatively fine X-axis movement is controlled to the X-axis slide. It can be adjusted through the handle 42, but is not limited thereto.

10, 20: Clamp 11: Lead electrode
21: trailing electrode 30: hot wire clamp
31: hot wire 40: base
42: X-axis slide adjustment handle 43: Work angle adjustment handle
44: Y-axis slide adjustment handle 45: Tilting adjustment handle
47: Hot wire clamp moving groove 48: Clamp holder support moving groove
50: control box 51: handle
60: wheel 70: clamp holder
71: rotating shaft 72: horizontal part
73: inclined portion 81, 82: clamp holder support

Claims (8)

A leading electrode and a trailing electrode generating arcs for welding, respectively; And
And a hot wire electrode positioned between the preceding electrode and the succeeding electrode.
Hybrid fillet auto carriage.
The hybrid fillet auto carriage of claim 1, wherein a distance between the preceding electrode and the trailing electrode is 15 to 40 mm.
The hybrid fillet auto carriage of claim 1, wherein the hot wire is fused to the base material by using arc heat of the preceding electrode and the following electrode, without separate melting heating sources.
According to claim 1, X-axis slide adjustment handle to enable the X-axis movement of the preceding electrode and the following electrode;
A Y-axis slide adjustment handle that enables Y-axis movement of the preceding electrode and the following electrode;
A work angle adjusting handle for adjusting a work angle of the preceding electrode and the following electrode;
A tilting adjustment handle enabling adjustment of a travel angle, which is an angle with respect to the base material of the preceding electrode and the following electrode; And
Hybrid fillet auto carriage further comprising a CTWD adjustment handle for adjusting the distance to the base material of the preceding electrode and the following electrode.
In claim 4, the preceding electrode and the trailing electrode are respectively located in a clamp, and each clamp is provided with a clamp holder at the bottom,
The clamp holder comprises a horizontal portion, an inclined portion forming an obtuse angle with the horizontal portion and a rotation axis that is a rotational center of the horizontal portion and the inclined portion, forming a V-shape as a whole,
Hybrid fillet auto carriage that moves in the opposite direction to the horizontal portion, the inclined portion around the rotation axis when the horizontal portion moves up and down by adjusting the forward or reverse rotation of the tilting adjustment handle located on the horizontal portion.
The method of claim 5, wherein the clamp is fixed in parallel to the inclined portion, and the CTWD is adjusted by moving the clamp in parallel along the guide groove of the inclined portion by forward or reverse rotation of the CTWD control valve located in the inclined portion. Hybrid fillet auto carriage.
The hybrid fillet auto carriage according to claim 1, wherein the hybrid fillet auto carriage moves along an X-axis with a hot wire clamp equipped with a hot wire electrode along a base formed in the lower portion and a straight groove formed in the base.
The hybrid fillet auto carriage of claim 1, wherein the preceding electrode and the following electrode are flux cored wires.

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