JPH0112598B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a welding jig used for welding thin plates and the like.

FIG. 1 is a perspective view showing the configuration of a conventional welding jig, and in the figure, 1a and 1b are materials to be welded. Both ends of the materials to be welded 1a and 1b are butted together on a back bar (not shown) to form a butt line 1c. Then, the materials to be welded 1a and 1b are welded while the torch 2 moves on the butt line 1c. At this time, the material to be welded 1a is pressed and fixed via the chip 3a and the holding plate 4a by a pressure device 5a such as an air hose, and the material to be welded 1b is pressed and fixed via the chip 3b and the holding plate 4b. device 5b
It is pressed and fixed by.

By the way, in the above-mentioned welding jig, the holding plates 4a and 4b are each made of a single plate-shaped body rotatably attached to the horizontal support shafts 6a and 6b, so that a small portion of the support shafts 6a and 6b Nawaramiya, support shaft 6
Due to slight discrepancies in the parallelism between a, 6b and the welded materials 1a, 1b, the pressure applied from the holding plates 4a, 4b to the welded materials 1a, 1b via the chips 3a, 3b is increased. This causes unevenness in the amount of heat flowing from the materials to be welded 1a, 1b to the chips 3a, 3b, resulting in the inconvenience that stable welding of the materials to be welded 1a, 1b cannot be performed. In addition, as a countermeasure to this problem, a method has been taken in which the presser plates 4a and 4b are not integrated into one unit, but are configured by dividing them.
The same inconvenience as mentioned above occurs, and there is no fundamental solution.

In view of the above-mentioned circumstances, this invention provides a welding jig that enables stable welding, in which the presser plate is attached to a supporting member (for example, a ball joint) that is a universal joint so as to be rotatable in all directions. It is characterized by consisting of a plurality of supporting members.

Embodiments of the present invention will be described below based on the drawings.

FIG. 2 is a perspective view showing the configuration of an embodiment of the present invention, and parts corresponding to those in FIG. 1 are given the same reference numerals. This embodiment shown in FIG. 2 is different from the conventional welding jig shown in FIG.
6b). That is, in this embodiment shown in FIG. 2, the holding plate 7a is a ball joint (supporting member that becomes a universal joint) 8a-i (i=
1, 2...n), and the plate-like bodies 7a-i are rotatable in all directions like a human upper arm. Further, like the presser plate 7a, the presser plate 7b also has ball joints (supporting members serving as universal joints) 8b-j (j=1, 2).
...n) plate-shaped body 7 attached to the plate so as to be rotatable in all directions
It consists of b-j. Note that the upper ends of ball joints (supporting members that serve as universal joints) 8a-i are fixed to mounting members 9a, and the upper ends of ball joints (supporting members that serve as universal joints) 8a-j are fixed to mounting members 9b (not shown). omitted).

In such a configuration, the pressurizing devices 5a, 5b
When pressure is applied to the pressing plates 7a and 7b from
The plate-like bodies 7a-i and 7b-j are the chips 3a,
An even pressure is applied to the welded materials 1a and 1b via 3b. That is, each plate-like body 7a-i,
7b-j is ball joint 8a-i, 8b-j
Since the pressure device 5a can be rotated in all directions around the connection point with the plate-shaped body 7a-
i, the pressure of the pressurizing device 5b is applied uniformly to the welded material 1a via the chip 3a, and the pressure is applied to each plate-shaped body 7b-
j, is applied uniformly to the welded material 1b via the tip 3b. This eliminates uneven pressure applied to the materials to be welded 1a and 1b, making it possible to perform stable welding.

In addition, in the above embodiment, the plate-shaped body 7a-
i, 7b-j are ball joints 8a-i, 8a
-j, but the main point is the plate-like body 7a.
-i, 7b-j may be supported so as to be rotatable in all directions, and other supporting members may be used.

As explained above, in the present invention, the holding plate is constituted by a plurality of plate-shaped bodies each rotatably attached to a support member serving as a universal joint such as a ball joint, so that the chip and the covered A constant pressure can be created between the welding member and the welding member, thereby providing the advantage that stable welding can be performed.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the configuration of a conventional welding jig;
FIG. 2 is a perspective view showing the structure of a welding jig according to the present invention. 1a, 1b... material to be welded, 4a, 4b, 7a,
7b...Press plate, 7a-i, 7b-j (i, j
=1, 2...n)...Plate body, 8a, 8b...Ball joint (supporting member).

Claims (1)

[Scope of Claims] 1. A welding jig that includes a presser plate that presses a pair of welded materials to a welding position via a tip, and a pressurizing device that presses the presser plate uniformly from its surface side. In this method, the holding plate is made up of a plurality of plate-shaped bodies arranged in the welding line direction of the welding materials, and each of the plate-shaped bodies is attached to the mounting member via a support member serving as a universal joint. A welding jig characterized by: 2. The welding jig according to claim 1, wherein the support member serving as the universal joint is a ball joint.