JPS607917Y2 - thin plate welding equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a thin plate welding device that is capable of welding any welded portion of a thin plate with a simple configuration.

Generally, when welding a thin plate with a small thickness such as a membrane tank, a back presser 2 and a front presser are attached to the back and front surfaces of the thin plate 1 at the welded part W of the thin plate 1, respectively, as shown in Fig. 1. It is necessary to press the thin plate 1 and restrain it from the front and back to prevent deformation during welding.

In this case, a considerable amount of force is required to restrain the thin plate 1, and simply placing a heavy object on the top surface of the thin plate requires a large weight, and the operation of placing the object is difficult; This will interfere with welding work.

Furthermore, when the thin plate is in an upright position, it is not possible to place a heavy object on it.

Therefore, when the thin plate is in an upright position, as shown in Figure 2,
A presser jig 5 with U-shaped frames 4 and 4' formed on the front and rear is used, a back presser foot is fixed to the rear frame 4', and a front presser foot 6 is movably provided on the front frame 4. , a method has been considered in which the front presser foot 6 is pressurized in the direction of the arrow in the figure to restrain the thin plate 1 from the front and back.

However, in the case of this jig 5, due to the lengths of the frames 4 and 4', only the welding part W at the end of the thin plate 1 can be welded.
The middle welding portion W' of the thin plate 1 cannot be welded.

Therefore, the next welded part cannot be welded until after the tack welding and wet welding are completed, resulting in poor work efficiency.

In particular, the construction of membrane tanks requires a great deal of time.

This invention takes the above points into consideration and uses a vacuum box to press the front and back surfaces of the thin plate separately.

Next, this invention will be explained with reference to the drawings from FIG. 3 onwards showing an embodiment thereof.

First, in FIG. 3 showing the vertical position, 7 is a long back presser foot, 8 is a support punch fixed to the upper end of the back presser 7, and 9 is rotatably attached to the support punch 8. 10 is a connecting punch whose central part is screwed to the adjusting rod 9; 11 is a vacuum box attached to both ends of the connecting punch 10; 12 is attached to the opening edge of the vacuum box 11. The lower end of the back presser foot 7 has a support punch 8. Adjustment rod9. Connected pestle 10.
Vacuum box 11. A suction cup 12 is provided.

Reference numeral 13 denotes a long front presser foot, and the upper and lower ends of the front presser foot 13 are provided with a support punch 8', an adjustment rod 9', a connecting punch 10', a vacuum box 11', like the back presser foot 7. A suction cup 12' is provided, and a rail 14 for running a welding machine (not shown) is formed on the front presser foot 13.

The back presser foot 7 and the front presser foot 13 are suspended by upper support punches 8, 8', respectively.

When welding, the back presser foot 7 is brought into contact with the back side of the welded part of the thin plate, and the upper and lower adjustment rods 9 are rotated to bring each vacuum box 11 into contact with the back side of the thin plate.
Each vacuum box 11' of the front presser foot 13 is brought into contact with the position of each vacuum box 11 of the back presser foot 7, and the adjustment rod 9' is rotated to bring the front presser foot 13 into contact with the surface of the thin plate. .

Then, each vacuum box 11.11' is evacuated and each vacuum box 11.11' is attracted to the back and front surfaces of the thin plate.

At this time, the back presser foot 7 and the front presser foot 13, which are integrally connected to each vacuum box 11, 11', are pressed against the back and front surfaces of the thin plate, and the thin plate is completely restrained from the front surface.

Thereafter, a welding machine is run on the rail 14 of the front presser foot 13 to weld the welded portion.

Therefore, since the thin plate is restrained separately from the front side and the back side, each welding part of the thin plate can be arbitrarily selected and welded. For example, in Fig. 4, Wl indicates that welding is completed; W2 is during wet welding, W3. W4 indicates each welded part at the end of tack welding, and there are no restrictions on the process.

Next, FIG. 5 shows a case where the bottom of the membrane tank is in a downward position, and in the same figure, 15 is a base, 16
17 is a support stand that is not attached to the back side of the back presser foot 7; 18 is a wheel that is attached to both sides of the support stand 17; do.

19 is a support attached to the back presser foot 7, and like the embodiment shown in FIG. 3, the adjustment rod 9. Connected pestle 10. Vacuum box 11. A suction cup 12 is provided.

23 is a wheel that moves on the thin plate 1 placed on the base 15;
20 is an adjustment frame installed on the wheel 19, 21 is a front presser foot 1
3, which is similar to the embodiment of FIG.
Adjustment rod 9', connecting punch 10'.

A vacuum box 11' and a suction cup 12' are provided, and a connecting punch 10' and an adjustment frame 20 are connected by a connecting rod 22.

Then, vacuum box 11.11 the front and back sides of thin plate 1.
', as well as the back presser foot 7 and the front presser foot 13.
is pressed against the thin plate 1, and the welded portion is welded as in the case of FIG.

As described above, according to the thin plate welding device of this invention, there is a long back presser foot and a front presser foot that come into contact with the back and front surfaces of the welded part of the thin plate, and both ends of the both pressers are rotatable. an adjustment rod with a threaded groove formed therein, a connecting punch whose center portion is screwed to each of the adjustment rods, a vacuum box attached to both ends of each of the connecting punches, and an opening edge of each of the vacuum boxes. The structure is extremely simple, as it includes a suction cup for airtightness attached to the front presser foot and a rail for running the welding machine formed on the front presser foot. It is possible to perform selective welding, tack welding equipment and water welding can be performed arbitrarily, and there are no process restrictions, improving work efficiency, and this is especially noticeable when applied to the construction of membrane tanks. have an effect.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of thin plate welding, Fig. 2 is a perspective view of a conventional welding device, Fig. 3 and the following drawings show an embodiment of the thin plate welding device of this invention, and Fig. 3 is one embodiment. FIG. 4 is an explanatory diagram of the welding process, and FIG. 5 is a front view of another embodiment. 1... Thin plate, 7... Back presser foot, 11, 11'
...Vacuum box, 13...Front presser foot, 14...Rail.

Claims (1)

[Scope of utility model registration request] a long back presser foot and a front presser foot that come into contact with the back and front surfaces of the welded portion of the thin plate; an adjustment rod rotatably attached to both ends of the presser foot and formed with a screw groove; A connecting punch whose center portion is screwed to the adjustment rod, a vacuum box attached to both ends of each of the connecting punches, a suction cup for airtightness attached to the opening edge of each of the vacuum boxes, and the top presser foot. A thin plate welding device equipped with a rail for running a welding machine.