JP2765086B2 - Welding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a high-speed, high-
Also, the present invention relates to a welding apparatus capable of obtaining a good bead shape even in horizontal welding.

[Prior art] Welding as a joining means in shipbuilding, pressure vessels, steel pipes, vehicles, bridges, etc. can save material compared to joining means using rivets and the like, and is far superior to fatigue strength. It is widely used because it is completely watertight and airtight. In particular, the proportion occupied by arc welding using electric energy is large.

However, in the conventional arc welding, a single wire system having a single electrode wire is fundamental, and in such a welding system, if an attempt is made to increase the welding speed, a large current must be passed, When a large current flows, it is difficult to form a good bead.

[Problems to be Solved by the Invention] The present invention provides a welding apparatus that can obtain a high speed and a high welding amount as compared with the conventional single wire system, and can obtain a good bead shape even in the horizontal welding. It is intended to provide.

Means for Solving the Problems The present invention is capable of transmitting two or more wires, has a fixed torch fixed to a welding bogie, and has the same configuration as the fixed torch. A stationary torch and a movable torch, comprising: a movable torch arranged side by side in a direction perpendicular to the welding direction and movable in the welding direction; and a position adjusting device for adjusting the position by moving the movable torch. The present invention relates to a welding apparatus characterized in that they are connected to different power sources.

[Operation] Welding is performed simultaneously with a plurality of wires, and a good bead is formed at a high speed and a high welding amount.

Also, in sideways welding, the relative position of the torch can be changed, resulting in a good bead.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1 and FIG. 2, a wheel 1 is provided on both front and rear sides of the bottom, and a welding cart 3 is provided on which the wheel 1 is mounted on a rail 2 and is movable on the rail 2. A wire reel 5 that winds a welding wire 4 in a coil shape on a welding carriage 3 and sequentially sends out the wire 4 as the wire 4 is consumed;
The motor 7 receives supply of the wire 4 from the wire reel 5.
The feeder 8, which feeds the wire 4 to the torches 6, 6 'at a high speed by the drive, is placed.

An arm 9 is provided at an end of the welding cart 3, which is movable and adjustable in a direction perpendicular to a welding direction A of the cart 3, and has one end largely protruding to the side of the cart 3. At the protruding end of the arm 9, two mutually parallel support frames 10, 10 'are installed at right angles to the arm 9 in the welding direction,
Two torches 6, 6 'are arranged inside the support frames 10, 10' opposite to each other.

Of the two torches 6, 6 ', one torch 6 is directly fixed to the support frame 10, and the other torch 6' is attached to the small carriage 13 of the position adjusting device 12. The position adjusting device 12 has a structure in which a small truck 13 is screwed into a screw rod 11 rotatably supported on the support frame 10 ′, and the small truck 13 moves along the rod 11 by rotation of the screw rod 11. Has become.

Two wires 4 are passed through the fixed torch 6 directly fixed to the support frame 10 and the moving torch 6 'attached to the small carriage 13, respectively.

Further, the two torches 6, 6 'are connected to different and independent power sources 14, 14', respectively, and the power sources 14, 14 'are connected to a control device 15 for controlling the power sources 14, 14'. Reference numeral 16 denotes a base material.

In the above configuration, in the welding of all positions of the horizontal fixed pipe or the like, the two torches 6, 6 'face each other across the welding line 17 as shown in FIG. Position.

The above-mentioned full-position welding is welding using a plurality of wires 4, and even when performed at a high speed, a high weld amount and a good bead 18 can be obtained as shown in FIGS.

At the time of welding in the horizontal and horizontal directions, if the fixed torch 6 and the movable torch 6 'are welded with each other as shown in FIG. 3, the bead droops due to gravity as shown in FIG. I can't get a bead.

Accordingly, when welding in the horizontal and horizontal directions, as shown in FIG. 6, the small bogie 13 is moved by the rotation of the rod 11, and the movable torch 6 'is displaced so as to be located forward of the fixed torch 6. This creates a time lag in welding,
By performing welding with the wire 4 of the fixed torch 6 after welding with the wire 4 of the movable torch 6 ', a good bead 18 as shown in FIGS. 8 and 9 can be obtained.

When performing narrow groove welding, the wire 4
By using the torches 6, 6 'in which the wires 19, 19' are opened downward and inclined as shown in FIG. 10, when the wire 4 is passed, the wire 4 passes through the ports 19, 19 '. Welding is performed with 4 open at the bottom, and a good bead 18 can be obtained as shown in FIG.

If the current flowing out of the power supplies 14 and 14 'is controlled by the control device 15, and the feed amount of the wire 4 is controlled by adjusting the output of the power supplies 14 and 14', any of the above-mentioned weldings can be performed. In this case as well, appropriate feeding of the wire 4 can be performed, and the currents of the two power supplies 14, 14 'can be controlled synchronously as shown in FIG.

It should be noted that the welding apparatus of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the scope of the present invention.

[Effects of the Invention] As described above, according to the welding apparatus of the present invention, a plurality of wires can be passed through a plurality of torches to perform welding with a high efficiency and a high welding amount. The position can be changed, and an excellent effect that a good bead can be obtained even in horizontal welding can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view of one embodiment of the present invention, FIG. 2 is a perspective view of a main part of the embodiment, FIG. 3 is a view showing the position of a torch in all-position welding of a horizontal fixed tube and the like, 4 and 5 are views showing the shape of the bead at the time of the welding, FIG. 6 is a view showing the position of the torch in the horizontal horizontal welding, and FIG. 7 is a horizontal view due to the torch arrangement of FIG. Fig. 8 and Fig. 9 are bead diagrams when horizontal horizontal welding is performed by the torch arrangement shown in Fig. 6, and Fig. 10 is a wire diagram when narrow groove welding is performed. FIG. 11 is a bead diagram when welding is performed according to the state of the wire shown in FIG. 10, and FIG. 12 is a control diagram of a power supply current control device. In the figure, 3 is a welding cart, 4 is a welding wire, 6 is a fixed torch, 6 'is a movable torch, 12 is a position adjusting device, and 14 and 14' are power supplies.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-50-126536 (JP, A) JP-A-63-248571 (JP, A) Jiko 58-56057 (JP, Y2) (58) Field (Int.Cl. ⁶ , DB name) B23K 9 / 00,109 B23K 9/12 B23K 9/167 B23K 9/173 B23K 37/02

Claims (1)

(57) [Claims] Claims: 1. It is possible to pass two or more wires,
A fixed torch fixed to the welding trolley, a movable torch having a configuration similar to the fixed torch, arranged in a direction perpendicular to the welding direction with respect to the fixed torch, and movable in the welding direction; A welding device, comprising: a position adjusting device that adjusts a position by moving the movable torch, wherein the fixed torch and the movable torch are connected to different power sources, respectively.