JPS594231B2 - Kumitateyousetsouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic assembly and welding apparatus for welding a plurality of welded materials arranged side by side.

H. In the initial process of hull construction, a large amount of work is done to weld the stayers or brackets to the transformer material.

Automation of such welding is important for saving labor and maintaining the health of workers, and is disclosed in Japanese Patent Application Laid-Open No. 48-37342 and Japanese Patent Application No. 48-8.
No. 4,989 et al., several automatic welding devices have already been proposed. The present invention relates to one such method, and since this type of sliding welding has a long welding line and a large number of welding lines, a large amount of welding is required, so a large amount of welding can be performed quickly. It is desired that the structure be simple and occupy a small area. Patent application No. 48-84989, which was originally proposed by this applicant.
No. 2 is suitable for such welding, but since a rigid beam is used to support the welding head, the beam retreats by the amount it advanced during the return process, and therefore requires a wide dead zone at the rear of the welding facility. do.

Since the stiffener of the hull transformer material 1 is long, for example, 4 m, the rear dead zone width is 4 m, and this is required over the entire length of the long transformer material at maximum.
The present invention aims to improve these points and reduce the occupied area as much as possible. Next, the present invention will be explained in detail with reference to Examples. 1 and 2 show an assembly welding apparatus of the present invention when applied to welding transformer materials, the former being a plan view and the latter being a side view.

In these figures, 1 is a transformer material, 2 is a stayer or bracket (hereinafter simply referred to as a stayer), and 3 is a face plate. Steifer 2 is X
The transformer material 1 extends in the direction, is placed perpendicular to the transformer material 1, and is arranged side by side at equal intervals in the Y direction, which is perpendicular to the X direction.
・It will be done. Rails 5 and 6 are laid parallel to the side edge IA of the transformer material 1, that is, in the Y direction, and a movable cart 7 is placed on these rails. 7A and 7B are running vehicles of trolley T (one wheel).

This moving cart 7 includes a pair of cable processing chains 14,
14A is installed. Since these chains and the parts attached to them are the same, one of them, chain 1
4, one end 14a of this chain
is fixed to the rear end of the deck plate 7A of the movable trolley 7 as shown in the figure, and after forming a ring, passes through the abdomen of the movable trolley 7 and extends linearly toward the transformer material 1 side. The cable processing chain 14 is a type of cable carrier or simply cable chain, and is made by connecting blocks 14b and 14c shaped as shown in the figure in a chain with pins 14d.
In FIG. 1, the chain does not bend in the Y direction or downward in the plane of the paper, but only in the direction of the plane of the paper, and the power supply and control cables 26 are housed inside the chain. A chain drive motor 15 is installed inside the movable cart 7, an operation panel 16 and a control box 17 are mounted on the deck plate 7c of the cart, and a column 18 is attached to the lower part of the cart via an arm 18A.

An idler roller 9 is fixedly attached to the lower part of the column 18, and an idler roller 10 is attached so as to be movable underground, and the roller 10 is always pressed by a spring or the like so as to move upward. These rollers 9, 10 cause the cable handling chain 14 to form a loop as shown. A drive roller 19 of the cable handling chain 14 and a plurality of supporting idle rollers 20 to 24 are also provided in the moving carriage 7, and the roller 19 is rotated by a motor 15VC via a chain 25 to unwind the cable 14. Perform the trigram and pullback. A welding head 30 is attached to the other end of the cable management chain 14.

This welding head 30 includes two wire reels 31, a flux hopper 32 (not shown in FIG. 1), and a flux hopper 32 (not shown in FIG. 1).
It consists of a wire feeder 33, a welding torch 34, etc. The wire feeding mechanism 33}, welding torch 34, etc. are attached to a Y-direction movable table 35, and this movable table is further attached to a vertically movable table 37Vc. A U-shaped frame 40 is fixed to the tip of the chain 14, and the Fl6 movable base 37 is attached to this frame 40.
Vc is slidably attached to support rods 41, 42 which are attached in a vertical position Vc. An air cylinder 43 is provided on the U-shaped frame 40, and the movable base 37 is lifted by this air cylinder, and the flap 32 is attached to the frame 40 via the arm 32AVc.

A roller 44 for rolling on the surface of the transformer material 1 is attached to the lower surface of the movable table 37, and a pair of rams 45 for moving the movable table 35 are attached to the upper surface. Furthermore, movable table 35
is provided with a guide arm 46. Further, a roller 38 is attached to the tip of the chain 14 to roll on the surface of the transformer material. Next, the operation of this welding device will be explained.

A large number of stiffeners 2 are temporarily attached to the transformer material 1 at equal intervals, and the transformer material 1 is carried on a conveyor 47. The chain 14 is initially in a backward state, and when the transformer material 1 is carried in front of the moving carriage 7, the two cable handling chains 14 and 14A protruding from the moving carriage 7 are located in the center between the stiffeners 12, respectively. The movable cart 7 is automatically moved along the rails 5 and 6 based on the position detection result of the stiffener one end portion 2A, and the position is finely adjusted. Chain drive motor 15 is then energized to drive roller 19 through chain 25. Since the roller 19 strongly holds the chain 14 together with the idler roller 20, when the roller 19 rotates, the chain 14 is let out in the X direction toward the transformer material. When the rollers 44 and 38 at the lower end of the chain tip rest on the surface of the transformer material 1 and the welding head 30 enters between the stiffeners 12, compressed air is sent to the ram 45 and the movable base 35 is pushed out in the Y direction. The spacing between stiffeners 1 and 2 is 1 m or 0.9 m for hull transformer material.
777, the amount of protrusion of the movable base 35 is constant in two types.
Air cylinder 45VC until 5 hits this stopper.
Push it out more quickly. The welding torch 34 is attached to the movable table 35 via a spring so as to be movable in the Y direction together with the guide arm 46, and when the movable table 35 is pushed out, the guide arm 46 comes into pressure contact with the stiffener 12. As a result, the distance between the tip of the torch 34 and the stiffener 12 is always maintained at a predetermined distance by the guide arm 46Vc, and the distance between the tip of the torch and the transformer material 1 is always maintained at a predetermined value by the roller 44, so the stiffener The torch 34 is always aimed correctly at the rainbow fillet weld formed at the contact area between the transformer material 1 and the transformer material 1. In this state, power is supplied to the welding torch 34, and the chain 14 is successively advanced to weld the stiffener 12 on the side surface of the welding head 30 in the X direction.

When the chain 14 moves forward, if there is a change in the spacing between the welding head 30 and the stiffener 2, the guide arm 46 finely adjusts the welding torch support so that the stiffener and torch spacing remains unchanged, and the welding When there is a change in the distance between the head 30 and the transformer material 1, the roller 44 moves the movable base 37 up and down so that the distance between the torch transformer materials remains unchanged.
When the chain 14 is being unwound, the chain 14 forms a high ring behind the movable cart 7 as shown by the chain line.
The rear end portion of the roller gradually descends against the upward force of the idler roller 10. When the chain 14 is extended and the welding head 30 reaches the end of the stiffener 12, the power supply is stopped and welding is completed.

Next, the return process begins, but first the air cylinder 45
The compressed air is removed and the movable base 35 is pulled back, and the compressed air is sent to the air cylinder 43 to raise the movable base 37. As a result, the roller 44 is lifted off the surface of the transformer material 1.
The movable table 35, welding torch 34, etc. are also lifted. Next, the motor 15 is rotated in reverse at high speed, and the chain 14 is rapidly retreated. At this time, the roller 38 rolls on the surface of the transformer material 1 at high speed while supporting the tip of the chain 14.
When the chain 14 is pulled back, the idler roller 10 holds the rear end of the chain and makes a large ring as shown by the chain line to absorb the amount of the chain being pulled back. Although the operation of the cable processing chain 14 has been described above, the same applies to the other cable processing chain 14A. 1 at the welding end of the tip of these cable processing chains 14, 14A.
If fillet welding is performed on both sides of two stiffeners 2 at the same time, welding defects are likely to occur due to gas venting. Therefore, it is preferable that these welding heads 30, 30A be offset by at least 15 cm. Furthermore, as shown by dotted lines 36, these welding heads are equipped with a movable table 35, a welding wire feeding mechanism 33, and a welding torch 34.
Welding efficiency can be improved by providing another set of welding mechanisms consisting of the same, and configuring the structure to weld the stiffeners on both sides of the cable processing chain 14 at the same time. When welding of one stiffener is completed, move the moving cart 7 in the Y direction,
Weld the next adjacent stiffener.

The process is similar thereafter, and a large number of stiffeners are welded to the transformer material 1 in this manner. Of course, many more cable processing chains and welding heads are installed on the moving trolley 7.
A large number of stiffeners may be welded at the same time. As is clear from the above description, according to the present invention, a bendable cable handling chain is used as the support and drive body of the welding head, so that when the support body and drive body are retracted, the rear end moves backward. There is no protrusion, and the pull-in amount is absorbed by drawing a high ring, so there is no need to prepare a large dead zone at the rear, and this minimizes the area required for the welding site. It can be done. Further, the power supply unit and control cables connecting the movable carriage and the welding head can be compactly integrated into the cable handling chain, which has various advantages such as eliminating the need for a separate cable handling mechanism.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are a plan view and a perspective view of a welding device according to the present invention. In the drawing, 2 is the material to be welded, 14 is the cable processing chain, and 3
0 is the welding head.

Claims (1)

[Claims] 1. In an assembly welding device for a plurality of welded materials extending in the X direction and arranged side by side at intervals in the Y direction that intersects the X direction, one end is fixed to a movable cart movable in the Y direction, and the workpieces are moved up and down by idle rollers. A ring is formed that expands and contracts in the direction, and then extends in a straight line, the other end is supported by a rolling roller, and is inserted between the materials to be welded, and is moved forward and backward in the X direction by a drive roller provided on a movable cart. 1. An assembly welding device comprising: a cable processing chain storing cables; and a welding head attached to the other end of the chain for welding materials to be welded.