JPH0327735Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a flux dispersion device for welding corner joints in submerged arc welding.

<Conventional method> When welding square joints in submerged arc welding, the amount and width of flux applied differ depending on plate thickness, etc., but since the flux is usually square, when it is applied, the flux falls off from one side, resulting in a submerged arc. Since welding becomes impossible, the guide plate 18 is temporarily attached to the workpiece 20 to prevent the flux from falling, as shown in Fig. 4.
9, or fixed with magnets etc. and welded.

<Problems to be solved by the invention> In order to maintain flux distribution, the weld line was surrounded by a guide plate, etc., which took an extremely long time to install. Furthermore, when removing after welding, if temporary attachment or the like has been done, post-finishing must be done, which takes even more time. In addition, since the welding length varies depending on the item, several types of matching guide plates are required.

<Means for solving the problem> Two guide plates are provided with a length that corresponds to the needs of the welding equipment from flux dispersion to flux collection, and a guide wheel and a guide wheel that uses the cross section of the welding groove as a guide are installed at the tips of the plates. The welding cart is provided with a claw for abutting and indexing, a guide roller is attached to one side of the guide plate, a guide roller is attached to the outside of the side surface, and an arm-type rear wheel is attached from the side surface of the guide plate at the rear end to form a flux fall prevention device.

<Function> When the claw comes into contact with the index arm plate from the welding truck, the flux fall prevention device moves along the corner joint side plate along with the welding truck by the guide wheels, guide rollers, and rear wheels.

After passing the open end of the weld, the guide wheel falls off and the claw also falls downward, so the flux fall prevention device stops.

<Example> This example is a perspective view of submerged arc welding during welding using the flux drop prevention device shown in Figure 1,
To explain this with reference to the starting arrangement diagram of the flux fall prevention device shown in _FIG . The guide wheel 5 is inserted into the welding groove 6, and the arm 1
The rear wheel 7 attached to the rear wheel 7 is prevented from falling by a pin 9, so that it is located slightly below the welded upper plate 8.

The guide wheel 5 is screwed onto the shaft, so that it can be adjusted left and right. When the index arm plate 12 from the welding cart 11 comes into contact with the pawl 13, the flux drop prevention device 1 moves along the welding groove groove 6 by the welding cart 11, and the rear wheel 7 also rides on the welding upper plate 8 and begins to shift. . During this time, the welding cart 11 performs flux dispersion 14 of the welding equipment, submerged arc welding 15,
Transfer while performing flux suction 16, etc.

The operation of the flux fall prevention device at the welding end of a square joint will be explained with reference to FIG. 3. When the guide wheel 5 falls off from the welding groove 6, the stopper 17 supporting the pawl 13 falls downward, so that the pawl 13 also falls. When the flux falls off, the device 1 stops, but the welding operation of the welding cart 11 is stopped by a sensor, and the welding operation continues although the supply of flux is stopped.

In addition, the guide roller 3 of this flux fall prevention device
If it is also attached to the top surface, this tool can be used for welding left and right corner joints by turning it upside down.

<Effects> By simply setting this flux fall prevention device at the corner joint weld, welding is possible regardless of the welding length, eliminating the conventional trouble of attaching and removing guide plates to prevent flux fall.
Work efficiency has increased significantly. Furthermore, since the width of the interval between the two plates can be easily adjusted by replacing the axle, the required minimum amount of flux can be distributed, which has the advantage of greatly reducing flux loss.

[Brief explanation of the drawing]

Figure 1: A perspective view of the flux fall prevention device of the present invention in use, and Figure 2: A perspective view of the flux fall prevention device of the present invention when set. Figure 3: A perspective view of the completed flux fall prevention device of the present invention, Figure 4: A conventional flux fall prevention device. 2 _-1 , 2 _-2 ... Guide plate, 3 ... Guide roller, 5 ... Guide wheel, 6 ... Welding groove, 7
...Rear wheel, 13...claw, 17...stopper.

Claims (1)

[Scope of utility model registration request] When welding a square joint in a submerged arc welding device, a guide roller 3 is arranged on one side of two guide plates, a guide wheel 5 with a pawl 13 interlocking with a stopper 17 at the tip, and a guide wheel 5 at the rear end A flux fall prevention device having a rear wheel 7 supported by a swing arm 10.