JPS6322915B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a jig for a stud welding gun.

When performing stud welding, the welding position is usually determined in advance and the stud is welded at the desired position. Particularly when a large number of studs are to be welded onto a deck at predetermined intervals, a method may be used, for example, where lines are drawn at the sowing positions and the studs are successively welded.
However, due to the structure of the welding guns currently in use, it is very difficult to accurately align the studs glued to the welding gun to the position where they should be welded, and it is necessary to weld the studs accurately at the determined position. In some cases, even though the welding time using a stud welding gun is relatively short, positioning itself takes considerable effort, which affects the efficiency of the welding work and results in higher work costs. Become. Furthermore, there are various drawbacks such as the fact that it requires considerable skill to weld the studs perpendicularly to the surface of the base material and is not easy.

SUMMARY OF THE INVENTION An object of the present invention is to provide a jig that can extremely easily position a stud during stud welding in order to solve the conventional drawbacks.

The jig according to the present invention comprises a stud guide member attached to a stud welding gun and a positioning plate positioned on the base metal deck to which the stud is welded, and the stud guide member is integrally provided at the tip thereof. , an annular guide whose outer shape is approximately conical toward the tip; and a ring-shaped guide fitted to the annular guide so that it can be pressed and displaced in the axial direction, and provided with a hole in the center for inserting a stud, and a shield grip at the tip. The positioning plate has at least one guide hole for receiving the annular guide member of the stud guide member, and the lower edge of each guide hole is connected to the lower surface and the surface of the base material deck during welding. This feature is characterized in that the guide holes are configured to communicate with the outside through the two, and each guide hole can be positioned at a desired welding position.

For gas release during welding, a passage is provided on the lower surface of the positioning plate that opens from the lower peripheral edge of each guide hole to the side edge of the positioning plate. It can be configured as a groove or as a recess common to each guide hole.

According to a preferred embodiment of the present invention, in order to prevent positional displacement during operation, the positioning plate can be provided with a fixing member, and the fixing member can be made of, for example, a magnet or an adsorbent. Preferably, vertical and horizontal positioning lines passing through the center of each guide hole may be provided on the upper surface of the positioning plate.

With this configuration, the studs to be welded can be easily positioned at the desired welding position and stud welding can be performed perpendicular to the base metal surface, resulting in the studs being welded at the desired position. Not only can the studs be accurately welded perpendicularly to the studs, but also the labor of positioning and vertical orientation of each stud can be saved, so welding work efficiency can be significantly improved. In particular, when a large number of studs are to be melt-planted in relatively accurate positions on a relatively large deck or the like, a very large effect can be expected by using the jig according to the present invention.

The present invention will be further described below with reference to the accompanying drawings.

1 and 2 show an embodiment of the jig according to the present invention, in which 1 is a stud guide member, and this stud guide member is attached to two support arms 2 of a welding gun (not shown). a support plate 3, a collar 6 attached to the underside of the support plate 3 by two bolts 4 via a spring 5 so as to be able to be pressed and displaced;
a conical annular guide body 7 provided integrally with the guide body 7; and a shield grip 9a that is slidably fitted into the guide body 7 and supports an arc shield 8 at its tip as shown in FIGS. 1, 1a, and 2. A cylindrical body 9 comprising
It consists of. Further, as shown in FIG. 3, this cylindrical body 9 has a hole in its center through which a stud 10 is passed.

In FIGS. 1 and 2, 11 is a positioning plate, and 12 is a base material deck on which studs are to be welded. As shown, the positioning plate 11 is provided with a guide hole 13 for receiving the guide body 7 of the stud guide member 1, and the lower peripheral edge of the guide hole 13 communicates with the outside via a passage 14 between it and the deck 12. To facilitate degassing during welding.

4 to 6 show an embodiment of the positioning plate,
This positioning plate 11a has two guide holes 13a, and a vertical line passing through the center position of these guide holes 13a,
Lateral locating lines 15 are provided on the upper surface. Furthermore, magnets 16 are embedded in the four corners of the positioning plate 11a, which serve as fixing members to prevent positional displacement during operation. Furthermore, as can be seen from FIGS. 5 and 6, each guide hole 13 is provided on the lower surface of the positioning plate 11a.
A plurality of gas venting grooves 14a are provided extending from the lower peripheral edge of the positioning plate a to each side edge of the positioning plate.

7 to 9 show modified embodiments of the positioning plate, in which both sides of the lower surface of the positioning plate 11b are thickened so that when it is placed against the deck, each guide hole 13b
This is the same as the embodiment of FIGS. 4-6 except that the lower peripheral edge of the deck is recessed to form a gap with the deck. Further, in this modified embodiment, only the four corners of the lower surface can be formed thickly in the shape of legs.

To explain the use of the jig according to the present invention configured in this way, first, the positioning plate 11 is
Position the guide hole 13 by aligning the center of the guide hole 13 with the desired welding position on the base metal deck 12, and insert the guide body 7 of the stud guide member 1 attached to the welding gun into the above positioned guide hole as shown in FIG. Insert into 13,
Then, as shown in FIG. 2, the welding gun is pressed downward against the action of the spring 5 so that the shield 8 attached to the tip comes into contact with the surface of the deck 12. This holds the stud perpendicular to the surface of the deck 12. In this state, by pulling the trigger of the welding gun, the stud can be welded to a desired position.

In the embodiments described above, the positioning plate can be made of any suitable material, but must be non-magnetic and able to withstand the heat of welding. Further, the number of guide holes provided in the positioning plate can be designed arbitrarily, and the size of the guide holes is determined depending on the outer size of the guide body of the stud guide member.

[Brief explanation of the drawing]

1 and 2 are partial sectional views showing an embodiment of the jig according to the present invention, FIG. 1a is an enlarged partial sectional view of the main parts of the device shown in FIG. 1, and FIG. FIG. 4 is a plan view showing an embodiment of the positioning plate, FIG. 5 is a bottom view of the positioning plate shown in FIG. 4, and FIG. 6 is a sectional view taken along line A-A in FIG. 4. 7 is a plan view showing a modified embodiment of the positioning plate, FIG. 8 is a bottom view of the positioning plate shown in FIG. 7, and FIG.
The figure is a sectional view taken along line BB in FIG. 7. In the figure, 1... stud guide member, 5... spring, 6...
Tsuba, 7... Guide body, 9... Cylindrical body, 9a... Shield grip, 11, 11a, 11b... Positioning plate, 1
3, 13a, 13b... Guide hole, 14, 14a... Gas vent passage, 15... Positioning line.

Claims (1)

[Scope of Claims] 1 Consists of a stud guide member 1 attached to a stud welding gun and a positioning plate 11 positioned on a base material deck 12 to which the stud is welded, and the stud guide member 1 is integrally attached to the tip thereof. an annular guide body 7 whose outer shape is approximately conical toward the tip, and a hole fitted in the annular guide body 7 so as to be able to press and displace in the axial direction, into which the stud 10 is inserted. The positioning plate 11 has at least one guide hole 13 for receiving the annular guide member 7 of the stud guide member 1, and each guide hole 13 The stud is characterized in that its lower edge communicates with the outside through between the lower surface and the surface of the base metal deck 12 during welding, and each guide hole 13 can be positioned at a desired welding position. Welding gun jig. 2. The jig according to claim 1, wherein the positioning plate is provided with a fixing member to prevent positional displacement during work. 3. The jig according to claim 1, wherein vertical and horizontal positioning lines passing through the center of each guide hole are provided on the upper surface of the positioning plate.