JPS58188599A - Butt welding device - Google Patents

Abstract

PURPOSE:To prevent the overlapping of members to be welded in the stage of butting the same and to butt both members surely, by attaching an spacing adjusting mechanism which adjusts the spacing between one of keep plates and a backing member for the members to be welded to a predetermined spacing to one of the keep plates. CONSTITUTION:A spacing adjusting mechanism is beforehand adjusted by moving a screw 23 thereof vertically prior to insertion of the 2nd member 9 to be welded into the spacing between the 2nd keep plate 5 and a backing member 1. The spacing between the plate 5 and the member 1 is thus adjusted to the min. spacing at which the member 9 can be moved smoothly. The overlapping of the 1st and the 2nd members 7, 9 to be welded is prevented by the above-mentioned method and the forward ends of the members 7, 9 are butted surely in tight contact with each other.

Description

[Detailed description of the invention] This invention relates to a butt welding device.

Conventionally, as an example of a butt welding device, one configured as shown in FIG. 1 is known. As shown by the two-dot chain line in FIG. 1, above the backing member 1, the first holding plate is rotatably attached to the shaft 2.3 provided in the fixed part. 4 and the first presser plate 5 are in a standby state, between the backing member 1 and the first presser plate 4 such that the tip is located on the center line of the groove 6 of the backing member 1. The inserted first member to be welded 7 is moved by the first presser plate 4 by actuating the cylinder mechanism 8 which is rotatably attached to the fixed part and rotatably connected to the first presser plate 4. The second workpiece is pressed to fix the backing member lK, and is inserted between the backing member 1 and the first holding plate 5, and its tip is brought into close contact with the end of the first workpiece 7 to be welded. When the member 9 is not rotatably attached to the fixed part, the cylinder mechanism 1o rotatably connected to the second presser plate 5 is operated to press it with the first presser plate 5 to remove the backing member 1. 1. The welding torch 11 provided above the abutting portion of the third member to be welded 7.9 is lowered to a predetermined height position by operating the cylinder mechanism 12 connected to the welding torch 11. Several connected movements (not shown)
Therefore, the welding torch 11 is $6 minus the first. The welding torch 11 is moved back and forth linearly along the abutting portion of the first welded members 7 and 9, and in the process welds the abutting portion. The first holding plate 4.5 is quickly returned to its original position by the cylinder mechanism 12 without contacting it, and then the first holding plate 4.5 is returned to its original position quickly.
The first holding plates 4.5 are each returned to their original positions by the cylinder mechanisms 8.10, and the welded first holding plates 4.5 are returned to their original positions by the cylinder mechanisms 8.10. The first member to be welded 7.9 is taken out.

However, in such a conventional butt welding device, the first. The height of the first presser plate 4.5 from the backing member 1 is determined by the height of the first presser plate 4.5, which is the thickest plate between the first presser plate 4.5 and the backing member 1 at the time of welding. The height must be set so that the @- workpieces 7 and 9 can be inserted, and if this is done, the first. When the first member to be welded 7.9 is changed to one with a thinner thickness, the relationship between the first holding plate 4.5 and the backing member 1 is
The first member to be welded 9 overlaps the member to be welded 7 of the first member to be welded. There was a drawback that there were cases where the second contact member 7.9 could not be brought into contact with each other.

The present invention has been made in view of the above circumstances, and includes at least one of the first presser plate and the second presser plate, and the first presser plate and the second presser plate. By attaching an interval adjustment mechanism that adjusts the distance between the first member to be welded and the backing member to a predetermined interval to at least one of the first presser plate and the second presser plate, the first ．． @
, 2, even if the plate thickness of the welded members of 2 is changed, these 1. It is an object of the present invention to provide a butt welding device that can prevent overlapping of first members to be welded when butting them together, reliably butt them together, and can facilitate automation.

An embodiment of the present invention will be described below with reference to FIG. In this embodiment, the same parts as those in the conventional example are given the same reference numerals, and the explanation thereof will be omitted.

A spring 22 is attached to the identification portion 21 near the first holding plate 5.
One end of the spring 22 is attached, and the other end of the spring 22 is attached to a predetermined location of the first presser plate 5, and the first presser plate 5 is always urged upward in FIG. 3 by the spring 22. has been done. A screw 23 is screwed into the fixing part 21 with a slight distance from the spring 22, and is fixed by nuts 24 and 25 so as to be able to adjust its vertical position. The lower end of the screw 23 is brought into contact with the second holding plate 5. These springs 22 and screws 2
3. The nuts 24 and 25 constitute a spacing adjustment mechanism. The first holding plate 5 is prevented from being pulled up by the spring 22 in FIG. 3 by the screw 23 when the downward pressing force of the cylinder mechanism 10 does not act on the first holding plate 5. Therefore, before inserting the first member to be welded 9 between the first presser plate 5 and the backing member 1, by adjusting the vertical movement of the screw 23 in advance, the second presser plate 5
and the backing member 1 can be adjusted to the minimum interval at which the first member to be welded 9 can be inserted therebetween and moved without resistance. By adjusting in this way, the first. Overlapping of the first welded members 7.9 can be prevented, and these first welded members 7.9 can be prevented from overlapping. The tips of the first members to be welded 7.9 can be brought into close contact with each other and abutted against each other.

Note that at a welding site, the production line is not necessarily set up so that the first workpiece 9 is inserted from the right side in FIG. 3, that is, from the first holding plate 5; One of the workpieces to be welded is first fixed to the backing member 1 on the right side in FIG. In some cases, the other member to be welded is inserted between the plate 4 and the backing member 1, and its tip is butted against the tip of the one member to be welded. Further, there are cases where either of these two conditions cannot be determined until the time of welding. In this way, in the case where it is not determined in advance which side of the field to be welded in FIG. , the interval attached to the first presser plate 5 in the first presser plate 4 in FIG. A spacing v4 adjustment mechanism similar to the IIl adjustment mechanism is attached.

In the above embodiment, the spacing adjustment mechanism is provided by the spring 2 whose both ends are attached to the fixing part 21 and the 4 presser plates.
2, a screw 23 screwed into the fixing part 21 and brought into contact with the holding plate, and a nut 24.2 screwed onto the screw 23.
5, but as shown in the figure, the interval adjustment mechanism is configured with a screw 32 screwed into the fixing part 21, and a screw 32 that is screwed into this screw 32. The screw 32 is fixed to the fixing part 21 so that it can be moved up and down.
, and a spring 3 attached to the first holding plate 5.
5. The interval adjustment mechanism of this embodiment is also attached to the seventh holding plate 4, as in the previous embodiment, when the insertion direction of the member to be contacted is not determined.

As explained above, according to the present invention, there is a predetermined distance between at least one of the first presser plate and the backing member of the seventh and first member to be intoxicated. Since the spacing adjustment mechanism for adjusting the spacing is attached to at least one of the first presser plate and the first presser plate, the first. Second
When the welded parts are butted together, these first. The first members to be welded are not lifted up, and therefore the first members to be welded are not lifted up. It is possible to prevent overlapping when the first welded parts are butted together, thereby making it possible to automate the device, and moreover, it is possible to widely perform various types of butt welding regardless of the welding method.
IlI can be used at any location.

[Brief explanation of drawings]

Fig. 1 is a schematic front view showing an example of a conventional butt welding device, Fig. 1 is a schematic front view showing a state in which the members to be welded are overlapped, and Fig. 3 is a schematic front view showing an embodiment of the present invention. , FIG. 9 is a schematic front view showing an embodiment of the pond of the present invention. . DESCRIPTION OF SYMBOLS 1... Backing member, 4... First presser plate, 5... First presser plate, 7... i/ member to be welded, 9...・First member to be welded, 11... Welding torch, 21... Fixed part, 22.35...
・Spring, 23.32...Screw, 24,25
,33.34...Natsuto. Figure 1 2 Figure 2

Claims (3)

[Claims] (1) The first member to be welded located on the backing member is pressed by a first presser plate and fixed to the backing member, and the first member to be welded is attached to the first member to be welded on the backing member. The two members to be welded are butted against each other, the first member to be welded is pressed by the first holding plate and fixed to the backing member, and the first member to be welded is fixed to the backing member. @
, 2, a butt welding device for welding the butt portions of the welded members by moving a welding torch provided above the welding torch, at least one of the first holding plate and the holding plate @, 2; At least one of the first presser plate and the first presser plate is provided with a gap adjustment mechanism that can arbitrarily change the gap between the backing member and the backing member according to the thickness of the welded member. A butt welding device featuring: (2) The spacing adjustment mechanism is configured to prevent the first member to be welded from being inserted between the first presser plate or the first presser plate and the backing member. The above-mentioned 1. A mechanism is provided that can apply a pressing force to the first presser plate or the second presser plate that does not allow one of the first members to be welded to rise above the backing member and overlap with the other member to be welded. A butt welding device according to claim 1, characterized in that: (3) The interval adjustment mechanism includes the first. It is characterized by comprising a spring connected to a fixed part near the first holding plate, a screw capable of controlling the force of this spring, and a nut that fixes this screw to the fixed part in a movable and adjustable manner. A butt S contact device according to claim 1.