JPS6144600B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a butt device for aligning grooves when butt welding steel plates transported by a roller conveyor on a surface plate.

[Conventional technology]

Conventionally, when butt welding two steel plates, the center-marked steel plate is lifted by a crane and placed on a flat surface plate, and then the center lines of each steel plate are aligned manually to form the groove. After aligning them, a copper plate was inserted directly under the groove, fixed with a jig, and welding was performed.

In this way, in order to place a heavy steel plate on a surface plate with a flat top and align the grooves, a cargo handling machine such as a crane is required, and a lot of manual labor is required. The problem was that it required time and effort.

[Problems to be solved by this invention]

In view of the problems of the prior art described above, this invention enables butt welding of steel plates without using a cargo handling machine that involves lifting work such as a crane.
The steel plate is transported by a roller conveyor, and the surface plate has been improved to have a stopper function for positioning and a lifting function for leveling.

[Means for solving problems]

As a means for solving the above-mentioned problems, the present invention provides an apparatus for butt-welding two steel plates 2 and 2' transferred by a roller conveyor 1 on a surface plate, which is disposed below the roller conveyor 1. A part of the upper surface of the push-up surface plate 12 which can be raised and lowered is made into a rotary surface plate 5 which can freely rotate from a horizontal position to a vertical position, and when rising, the rotary surface plate 5 is pushed away and placed in a vertical position and protrudes above the roller conveyor 1. A vertically movable stopper 8 is provided below the rotary surface plate 5 to stop one steel plate 2 and to move the rotary surface plate 5 to a horizontal position via a wire 17 when descending.

[Examples and effects]

FIG. 1 is a schematic front view showing one embodiment of the present invention, and FIG. 2 is a partially enlarged side view thereof.

In the figure, reference numeral 1 denotes a roller conveyor for transporting steel plates 2, 2', which is installed on a pedestal 3.
4 is a pressing roller for holding the steel plates 2, 2'.

Reference numeral 12 is a push-up surface plate that can be raised and lowered, and is raised and lowered by a cylinder 13 installed on the floor via an adjustment washer 14. 15
are guide legs suspended from both ends of the push-up surface plate 12, and are guided in the vertical direction by guide rollers 16 disposed in contact with both sides thereof.

The upper surface of the push-up surface plate 12 is divided into three parts,
In Fig. 1, both the left and right sides are always horizontal, but the central part is a rotating surface plate that can rotate about 90 degrees from a horizontal state to a vertical state around a pin 7 in conjunction with the vertical movement of a stopper 8, which will be described later. 5. That is, when the rotary surface plate 5 is in a horizontal state, the entire top surface of the push-up surface plate 12 is a flat surface plate, and when the rotary surface plate 5 is in a vertical state, there is an opening on the top surface of the push-up surface plate 12. occurs, and as explained later,
A stopper 8 is freely retractable from this opening.

A backing material 6, which is necessary during welding, is attached to the upper surface of the push-up surface plate 12 and the upper surface of the rotating surface plate 5 (the upper surface in a horizontal state). The material of this backing material 6 is a material that will not stick even if the welding rod melts during welding (copper alloy, glass fiber, etc.)
is used.

Now, 8 is a stopper for stopping the steel plate 2 conveyed by the roller conveyor 1 at the welding position, and it has an inverted U shape as shown in FIG. It is slidably inserted into the cylinder 10 and can be raised and lowered by the cylinder 9. When the stopper 8 is raised, the head of the stopper 8 pushes away the rotary surface plate 5 and rises to the set position, and when the stopper 8 is lowered, the rotary surface plate 5 is pulled back to the horizontal position by a pull-back wire 17. One end of the pullback wire 17 is fixed to the upper side surfaces of the left and right legs 8a, 8b of the stopper 8, and the other end is connected to the free end of the lower surface of the rotary surface plate 5 via a roller 18.

Note that the rollers 18 guide the wire 17 and support it so that it does not slacken.

With the above configuration, when the stopper 8 is raised by the operation of the cylinder 9 while the push-up surface plate 12 is lowered (the solid line position in Figure 1),
The upper surface of the head of the stopper 8 hits the rotating surface plate 5 and pushes it away, causing the rotating surface plate 5 to rotate upward around the pin 7 and finally become vertical, but the stopper 8 is pushed away from the rotating surface plate 5. The steel plate 2 passes through the opening created by the rotation of the stopper 8 and rises to the set position and stops (see Fig. 1).
Stop when it comes into contact with. After stopping, the steel plate 2 is firmly held by the conveying roller 1 and the pressing roller 4. (See Figure 2) In this state, when the stopper 8 is lowered by the operation of the cylinder 9, the stopper 8 and the rotating surface plate 5 are connected by the wire 17 via the rollers 18, so the stopper 8 is lowered. As it descends, the rotating surface plate 5 rotates about the pin 7 from a vertical state to a horizontal state and returns to its original state. In this way, the upper surfaces of the push-up surface plate 12 and the rotating surface plate 5 are at the same level, forming a flat surface plate surface.

Next, another steel plate 2' comes in from the opposite side of the fixed steel plate 2, and the two steel plates 2, 2' are butted. Thereafter, by the operation of the cylinder 13 for raising and lowering the surface plate, the push-up surface plate 12 whose upper surface is flat rises together with the legs 15 guided by the guide rollers 16 to the lower part of the abutting surface of the steel plates 2 and 2' and stops. (Position of imaginary line in FIG. 1) That is, the abutting surfaces of the steel plates 2 and 2' are supported by a flat surface plate provided with the backing material 6, so that butt welding can be smoothly performed.

〔effect〕

According to the present invention, in a device for butt welding two steel plates 2 and 2' transferred by a roller conveyor 1 on a surface plate, a push-up surface plate 12 disposed below the roller conveyor 1 that can be freely raised and lowered is used. Rotating surface plate 5 whose upper surface can be freely rotated from a horizontal position to a vertical position
When ascending, the rotary surface plate 5 is pushed aside and the roller conveyor 1 is placed in a vertical position, protruding above the roller conveyor 1 to stop one steel plate 2, and when descending, the wire 17
By providing a vertically movable stopper 8 below the rotary surface plate 5 for moving the rotary surface plate 5 to a horizontal position via the roller conveyor 1, the steel plate 2,
2' is moved, positioned using the movable stopper 8, and leveled using the push-up surface plate 12, the butt work of the steel plates necessary for butt welding is completed, and the welding is carried out smoothly on the flat surface plate. This has the effect of allowing you to perform detailed welding work.
It is possible to automatically butt steel plates even in a narrow space where it is not possible to install a cargo handling machine such as a crane, and it is possible to position two steel plates and prevent uneven groove levels.

In addition, if the backing material 6 is assembled on the surface plate, there is no need to manually insert the backing material under the groove between two steel plates during welding, saving labor and causing welding distortion. It is also effective for prevention.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of the butting device of the present invention, and FIG. 2 is a partially enlarged side view thereof. 1: Roller conveyor, 2, 2': Steel plate, 5:
Rotating surface plate, 6: Backing material, 7: Pin, 8: Stopper, 9: Cylinder (for upper and lower stopper 8),
12: Push-up surface plate, 13: Cylinder (for raising and lowering the push-up surface plate 12).

Claims (1)

[Claims] 1 In a device that butt-welds two steel plates 2 and 2' transferred by a roller conveyor 1 on a surface plate, a part of the upper surface of a push-up surface plate 12 that is disposed below the roller conveyor 1 and can be raised and lowered is The rotary surface plate 5 is rotatable from a horizontal position to a vertical position, and when ascending, the rotary surface plate 5 is pushed aside and the roller conveyor 1 is placed in the vertical position, protruding above the roller conveyor 1 to stop one steel plate 2, and when descending, the wire 17 is A steel plate butting device characterized in that a stopper 8 which can be raised and lowered to move the rotary surface plate 5 to a horizontal position is provided below the rotary surface plate 5.