JPH1085935A - Automatic welding device for splicing circular plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform welding by smoolthly moving the device even in the case of a small circle with regard to the automatic welding device for splicing the circular plate, which welds a metal plate in a circular shape. SOLUTION: On a rail rest 4, inner rail 8 and outer rail 9 are laid. A driving wheel 3a installed on the main body 2 of a welding machine 1 is ingaged with the inner rail 8, and the free wheels 5a, 5b of mounting plates 2a, 2b mounted on a main body 1 are engage respectively with the outer rail 9. The welding machine 1 is moved in a curricular shape, and a torth 6 is moved on the weld line 10 of the metal plates (a), (b) to perform automatic welding. By driving the driving wheel 3a, the driving wheel 3a is moved along the inmer rail 8, and with this movement, two sets of the free wheels are moved while being guided on the outer rail 9. Therefore, even when the radius (D/2) of the weld line is a small circle, the welding machine 1 is moved smoothly, and welding can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circular plate automatic welding apparatus for welding plate materials in a circular shape.

[0002]

2. Description of the Related Art Conventionally, in the case of automatic downward welding of sheet materials, illustration is omitted. Usually, a rail is laid along a welding line, and a welding machine which can be moved by a wheel is installed on the laid rail. The welding point is automatically welded while the welding machine is moved along the rail by driving the welding line. Therefore, such automatic welding of a plate material has been mainly applied to welding of a plate material having a relatively large welding area where a rail can be laid.

[0003]

In the conventional automatic welding of a plate material as described above, when the welding line is bent in a circular shape, if the radius of the welding line is sufficiently large, the rail of the welding machine becomes large. Therefore, the wheels of the welding machine can move along the rails without any problem. However, when the welding line radius is relatively small (for example, about 500 to 1000 mm), the bending radius of the rail to be laid is proportionally increased. Since the rails are small, the rails and the wheels of the welding machine are pressed against each other by a small radius, so that smooth running cannot be performed.

For this reason, in the case of automatic welding of a circular plate having a relatively small welding line radius as described above, conventionally, it has been necessary to rely exclusively on manual welding, so that a reduction in quality cannot be avoided. There was a problem that the time was long.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a circular inner rail laid on a rail base arranged along a circular welding line and a coaxial inner rail. A circular plate comprising: an outer rail laid outside; a set of driving wheels attached to the welding machine main body and engaged with the inner rail; and two sets of idlers engaged with the outer rail. Provide automatic welding equipment.

According to the present invention, when the driving wheels are driven, the welding machine supported by one set of driving wheels engaging with the inner rail and two sets of free wheels engaging with the outer rail is linked to the driving wheels. The two sets of idler wheels move while being guided by the outer rail, move smoothly along the inner and outer rails, and automatically weld to the circular welding line with the torch mounted on the welding machine in accordance with this movement. Can be sequentially executed.

[0007]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an overall plan view of a circular plate joining automatic welding apparatus according to an embodiment of the present invention. In the drawing, reference numeral 1 denotes an entire welding machine, 2 denotes a main body of the welding machine, 2a and 2b denote installation plates, 3a denotes a driving wheel mounted on the main body 2, 4 denotes a rail base, and circular inner rails 8 and outer rails. 9 is laid concentrically. 5a and 5b are idle wheels mounted on the mounting plates 2a and 2b, respectively.
It is a torch for welding mounted on. a and b are plate materials to be welded, and 10 is the welding line.

[0008] In the circular plate joining automatic welding apparatus having the above-described configuration, the welding portion (welding line) 10 between the plate materials a and b to be welded has a circular shape, and the radius of the welding portion is relatively small (for example, welding). (Approx. Radius D / 2 = approximately 500 to 1,000 mm), which moves along the inner and outer rails 8 and 9 and
The welding is performed on the welding line 10 by the torch 6 mounted on the welding wire.

The welding machine 1 is attached to the inner rail 8 and the outer rail 9 laid on the rail base 4 along the welding line 10 and the main body 2 of the welding machine 1 to perform the above-mentioned movement. 8 and two sets of idler wheels 5a and 5b engaged with the outer rail 9.

The driving wheel 3a may be used when the one conventionally installed in the welding machine 1 can be diverted, or may be used newly attached. The two sets of idler wheels 5a and 5b are mounted on the mounting plates 2a and 2b projecting from the welding machine main body 2 at predetermined intervals so as to be positioned along the outer rail 9.

FIG. 2 is a front view of the driving wheel 3a, and shows an engagement state with the inner rail 8. As shown, the inner rail 8 has a friction surface 8c on the upper surface, and the driving wheel 3a has a connection with the friction surface 8c. Each of the friction surfaces 3b and 8c has a friction surface 3b, and travels by a frictional force generated between the friction surfaces 3b and 8c by rotating the drive shaft 3c.

FIG. 3 is a front view of the idler wheels 5a and 5b, showing a state of engagement with the outer rail 9. As shown, the outer rail 9 has a locking portion 9c at the upper part, and the idler wheels 5a and 5b have Each has a locking groove 5c that engages with the locking portion 9c, rotates around the shaft 5d following the movement of the driving wheel 3a, and is guided by the locking portion 9c through the locking groove 5c. To run.

Next, the operation of the automatic welding device for a circular plate having the above configuration will be described. The welding machine 1 has one set of driving wheels 3a engaging with the inner rail 8 and two sets of idler wheels 5a engaging with the outer rail 9,
It is installed so that it can run freely via 5b. When the operation is started and the shaft 3c of the driving wheel 3a is driven and the driving wheel 3a moves on the inner rail 8, the idler wheels 5a and 5b move while being guided by the outer rail 9 in conjunction therewith. 1 moves smoothly along the welded portion 10, and automatic welding to the welding line 10 is sequentially performed in accordance with this movement.

[0014]

As described above in detail, according to the circular plate joining automatic welding apparatus of the present invention, one set of driving wheels engaged with the inner rail and two sets of idle wheels engaged with the outer rail. By driving the driving wheels, the welding machine can be smoothly moved along the inner and outer rails, thereby enabling a smaller diameter circular welded part that could not be conventionally achieved. Automatic welding can be performed to improve the quality and shorten the welding time.

[Brief description of the drawings]

FIG. 1 is a plan view of a circular plate joining automatic welding apparatus according to an embodiment of the present invention.

FIG. 2 is a front view showing a state of engagement between a driving wheel and an inner rail of the circular plate joining automatic welding apparatus according to one embodiment of the present invention.

FIG. 3 is a front view showing an engagement state between a play wheel and an outer rail of the automatic circular plate joining welding device according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Welding machine 2 Welding machine main body 2a, 2b Mounting plate 3a Driving wheel 3b Friction surface 3c Drive shaft 5a, 5b Idling wheel 5c Locking groove 6 Torch 8 Inner rail 8c Friction surface 9 Outer rail 9c Locking part 10 Welding line

Claims (1)

[Claims] 1. A circular inner rail laid on a rail base arranged along a circular welding line, and an outer rail laid on the outside coaxially with the inner rail; A circular plate joining automatic welding apparatus comprising: one set of driving wheels engaged with the inner rail; and two sets of idler wheels engaged with the outer rail.