JPH01245968A - Fillet welding equipment for exclusive use for longitudinal material - Google Patents

Abstract

PURPOSE:To realize a control mechanism with high response and high accuracy by setting two couples of welding heads approachably and separably mutually and fitting a couple of preceding and succeeding welding torches to each head with these positions and angles adjustable and performing fillet welding of lounge materials by the plural torches. CONSTITUTION:The couple each of welding heads 10a1 and 10a2, and 10b1 and 10b2 are fitted to head fitting bodies 9a and 9b respectively with these positions and angles adjustable. The couple of preceding and succeeding welding torches are fitted to each welding head. Root fitting parts of the longitudinal materials 4a and 4b on a main member 3 are subjected to fillet welding by the eight welding torches by moving the respective welding heads 10a1, 10a2, 10b1 and 10b2. By this method, the control mechanism with high response and high accuracy can be realized.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a fillet welding device exclusively for longitudinal materials for efficiently welding a plurality of longitudinal materials arranged on the main hull plate in ship construction. It is.

[Conventional technology]

As a conventional example of this type of fillet welding equipment, for example,
Publication No. 7-40615 discloses that a trolley is mounted on a gate-shaped girder, a pair of head mounting bodies are supported on the trolley in a vertically movable manner, and each head mounting body is provided with a pair of welding heads.
It is shown that two pairs of welding heads are used to perform fillet welding on both sides of two longitudinal pieces at the same time.

[Problem to be solved by the invention]

In the conventional method described above, a pair of welding heads that perform jul fillet welding of one longitudinal material are supported by an opening/closing support mechanism that is rotatable around a common fulcrum with respect to one head mounting body, and the welding head is rotated in the direction of welding progress. Since scanning control in the width direction is performed by displacement of a common head mounting body, the pair of welding heads move in the width direction as a unit due to this scanning, and each of the fillet welds on both sides There was a problem in that it was not possible to perform independent tracing control.

Furthermore, since each welding head is fixedly installed so that the torch faces in a predetermined direction with respect to the support mechanism, there is a limit to welding control that follows changes in the shape of the welding groove.

On the other hand, rotating arc welding, in which the arc is rotated eccentrically with respect to the torch axis, has been developed and put into practical use as a welding method that satisfies the recent demand for improved welding efficiency, but this welding method requires shallow penetration and high speed. Since welding is performed, high responsiveness and precision are required for one-touch position control that follows the groove shape.

An object of the present invention is to provide a highly efficient fillet welding apparatus exclusively for longitudinal materials, which is equipped with a rotary arc welding welding head and eliminates the drawbacks of the prior art described above.

[Means to solve the problem]

In order to achieve the above-mentioned problem, the fillet welding device exclusively for longitudinal materials of the present invention straddles the main member to be welded, in which a plurality of longitudinal materials to be welded are arranged, and travels in the direction of the arrangement of the longitudinal materials. a movable gate-shaped girder, a traveling frame movable on the girder along the extending direction of the longitudinal material, and a pair of head mounting bodies supported so as to be movable up and down on both left and right sides of the moving direction of the frame. , a total of four welding heads, each pair being supported by each head attachment body so that they can approach and separate from each other in the girder movement direction, and a preceding welding head that is attached to each welding head so that the position and angle can be adjusted individually. It is equipped with a torch and a trailing welding torch, and these four welding heads can simultaneously perform two rows of fillet tandem welding on both sides by sandwiching two longitudinal materials from both sides using a total of 8 electrodes. It is.

[Effect]

The fillet welding device exclusively for longitudinal materials of the present invention has a head configuration of two pairs of 2Ti electrode Kundem welding heads, with a total of 4 groups and 8 electrodes. It is supported by a traveling frame that moves on a girder along the material, giving freedom of displacement for individual tracing control. The girder straddles the main member to be welded, moves in the direction of longitudinal material arrangement, stops at a desired position, and welds two longitudinal materials immediately below it at the same time. - Two pairs of opposed welding heads are applied to one longitudinal piece, and another two pairs of opposed welding heads are applied to one longitudinal piece, and these heads The flesh weld joints are welded at the same time.

Since each welding head is independently supported relative to the head mounting body so as to be able to approach and separate from each other individually in the direction of movement, the welding heads are not affected by the displacement of each welding head. In addition, each welding head is equipped with a leading welding torch and a trailing welding torch, which can be individually adjusted in position and angle. Perform copying control IIl operation.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the entire apparatus of the present invention, in which a gate-shaped girder 1 is supported movably on rails 2 on both sides by its #1a. The rail 2 extends in the front and back directions of the paper surface of the drawing. The main member to be welded 3 lies between the rails 2 on both sides, and on its surface is a longitudinal member 4 extending in the left-right direction in the drawing.
A plurality of sheets are arranged at predetermined intervals in the front and back directions of the paper in the upright state.

The gate-shaped girder 1 extends substantially parallel to the longitudinal members 4 and is moved in the direction in which the plural longitudinal members 4 are arranged, straddling the main member 3 to be welded in which the plural longitudinal members 4 are arranged.

A traveling frame 6 is mounted on the girder 1 and is movable along the girder 1 by being powered by a cable pair 5 and driven by remote control. As shown in the figure, a fume suction device 7 and various welding mechanism parts necessary for welding are installed.

That is, FIG. 2 is an enlarged view of the traveling frame 6 in FIG. 1, and FIG. 3 is an enlarged side view taken from the line I-1 in FIG. , one pair of welding wire packs on both sides of the top of the girder 8 asl
8 ams 8 buy 8 b* is installed, and below it a pair of head mounting bodies 9a and 9b are supported on both sides of the girder so that they can be moved up and down independently by remote control for height position adjustment. There is. As shown in FIG. 3, each head mounting body has horizontal transverse axes 91a and 91b extending in a direction perpendicular to the girder 1 at its lower end. a pair of welding heads 10. ,.

10□, 10bx-10h@ are deployed. These four welding heads are connected to the 42&' wire pack 8.
&IH8a! p 8□, 8b! The welding wires are supplied from the respective wire pallets.

In this embodiment, these welding heads are rotary arc welding torches that perform automatic welding by tracing control using an arc sensor method. Each welding head consists of the same components, - the sets of heads 1o0 and 1ol have a mirror-symmetric configuration facing each other, and another set of heads 10b, 10b2
They also have a mirror-symmetrical configuration facing each other. Head 10 is a representative example of the main configuration of the welding head.
．． 1 in conjunction with FIGS. 4 and 5. The m-pole distance adjustment mechanism 12 is connected to the lower part of a truck 11 (FIG. 3) that is suspended on a horizontal transverse axis 91a and moves along it by remote control. A head block 14 is suspended and supported by an X-axis slide block 13 so as to be capable of remote precision feed movement in the horizontal direction 1c orthogonal to the transverse axis 91m. A leading welding torch 16 and a trailing welding torch 17 are supported so as to be capable of remote precision feeding movement in an oblique direction within a plane perpendicular to the direction of movement. Each torch 16.17 has β-axis torch angle adjustment 8I#l
118, the inclination angle (torch pointing angle) of the torch axis in a plane orthogonal to the welding direction can be individually controlled remotely, and the β-axis torch angle adjustment mechanism 19 can individually adjust the torch axis in the welding direction. Tilt angle (tilt angle)
can be remotely controlled.

It is.

Describing the operation of the embodiment apparatus having the above configuration, this apparatus simultaneously welds two of the plurality of longitudinal members 4 (4a and 4b in FIG. 3) on the main member 3.
When a plurality of longitudinal members 4 are arranged in parallel on the upper surface and temporarily welded, the girder 1 moves over the rail 2 with each welding head retracted upward by the head attachment bodies 9a and 9b. Move and stop at a predetermined position. in this case,
The traveling frame 6 is previously located at one end of the girder 1, and each wI contact head also has horizontal transverse axes 91a, 91b.
The two pairs of opposing welding heads are positioned at a predetermined initial position at the top, and the distance between the two pairs of opposing welding heads is wide enough to prevent interference with the longitudinal material directly below. In this state, the head mounting bodies 9a and 9b are lowered to lower each welding head to a predetermined height level, and the carriage portion 11 of each head is moved on the transverse shafts 91a and 91b to provide a gap between each opposing welding head. are brought close to each other until they reach a predetermined value. In this case, it goes without saying that the distance between the electrodes at the tip of the torch of each welding head is adjusted in advance by the inter-electrode distance adjustment mechanism 12. In this state, the 1-axis of each welding head is the X-axis slide block 1.
3. Y-axis slide block 15. α-axis torch angle adjustment mechanism 18. And by the β-axis torch angle adjustment mechanism 19, copying control movement can be performed individually and independently in four axes of freedom.

Therefore, for each fillet weld joint, the traveling frame 6 is moved to the girder 1 while performing tracing control using the 1-x sensor method using the leading and trailing two-electrode tandem rotary arc welding torches 16 and 17.
By moving the two longitudinal members 4m and 4b at a predetermined speed at a predetermined speed, both 111! I fillet weld joints total 4
The welding process is carried out using a tandem RS welding head in total.

When the welding reaches the other end, the welding end is caught and the welding is stopped, and the distance between the opposing pair of welding heads is widened by the movement of the carriage parts 11 of these heads, and then the lower end of the head is moved to the longitudinal member 4a. .

The head attachment bodies 9a, 9b are raised until they are located above the welding head 4b, and are returned to the welding start position by the movement of the frame 6. Thereafter, the girder 1 is moved on the rail 2 to the position of the next longitudinal member to be welded, and the same operation is repeated.

〔Effect of the invention〕

As described above, in the fillet welding apparatus exclusively for longitudinal materials according to the present invention, each welding head is supported independently with respect to the head mounting body so as to be able to approach and separate from each other in the direction of girder movement. It is not affected by the displacement of the welding head. In addition, each welding head is equipped with a leading welding torch and a trailing welding torch, which can be individually adjusted in position and angle. Since control operations can be performed, a highly responsive and highly accurate control mechanism can be realized.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the entire device of the present invention, FIG. 2 is an enlarged view of the traveling frame in FIG. 1, and FIG.
FIG. 4 is an enlarged partial side view showing the main parts of the welding head, and FIG. 5 is a view taken along line V--V of the entire view. 1: Gate girder, 2: Rail, 3: Main member, 4.4a,
4b: Orange material, 5: Cable hair, 6: Traveling frame,
7: Hume suction device, 8.1, 8°p 8 blp
8bt: wire pack, 9a, 9b: head mounting body,
91a, 91b: horizontal transverse axis, 10-4.10-x,
10b1.10ht: Welding head, 11: Truck part, 1
2: Inter-electrode distance g! Adjustment mechanism, 13: x-axis slide block, 14: head block, 15: Y-axis slide block, 16: leading rotating arc welding torch, 17: trailing rotating arc welding torch, 18: a-axis torch angle adjustment mechanism,
19: β-axis torch angle yJ adjustment mechanism.

Claims (1)

[Claims] A gate-shaped girder that can run and move in the direction of the arrangement of the longitudinal materials across a main member to be welded in which a plurality of longitudinal materials to be welded are arranged; a traveling frame movable by the girder; a pair of head mounting bodies supported so as to be movable up and down on both left and right sides of the frame; and a pair of head mounting bodies supported by each head mounting body so as to be movable toward and away from each other in the direction of movement of the girder. It is equipped with a total of four welding heads, each with a leading welding torch and a trailing welding torch attached to each welding head so that their positions and angles can be adjusted individually, and these four welding heads can simultaneously process two longitudinal materials. This fillet welding device exclusively for longitudinal materials is characterized by being capable of performing two rows of fillet tandem welding on both sides at the same time using a total of 8 electrodes by sandwiching the fillets from both sides.