JPH0339790B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a stud welding jig that holds a stud gun for performing stud welding.

(Prior Art) As a stud gun, the one described in, for example, Japanese Utility Model Application Publication No. 51-150224 is known, but in this case, the stud gun is simply supported by the operator's hand. In addition, an annular shield is attached to the tip of the stud gun, and this shield covers the entire circumference of the welding surface of the base metal to prevent spatter during stud welding. A device that prevents molten metal from scattering is known.

(Problem to be Solved by the Invention) However, if the stud gun is simply supported by the worker's hand as described above, the distal end of the stud gun may not be aligned with the welding surface of the base metal due to the worker's hand shake, etc. There was a problem in that it was difficult to maintain this direction. That is, welding using a stud gun has the problem that the stud cannot always be welded to the welding surface of the base metal in a predetermined direction unless considerable skill and attention are required. In addition, in a configuration in which the shield attached to the tip of the stud gun covers the entire welding surface of the base metal, there may be oil, dust, etc. on the welding surface of the base material that may cause poor welding. If foreign matter adheres to the stud, it cannot be easily removed due to the presence of the shield, and as a result, there is a problem in that poor welding of the studs tends to occur.

(Means for Solving the Problems) The present invention has been made to solve the above problems, and a first invention thereof includes a base 1 and a base material provided on the base 1. 100, and a clamp member 3 which is rotatably attached to the base material support member 2 and is capable of gripping the base material 100 between the base material support member 2. The member 3 has a gun insertion hole 15 into which the tip 201 of the stud gun 200 is inserted and fixed, and a gun insertion hole 15 formed between the base material 100 supported by the base material support member 2 and the base material gripping surface 14b of the clamp member 3. Air blowing hole 16 that can blow air toward the minute gap l
and a second
The invention comprises a base 1, a base material support member 2 provided on the base 1 and supporting a base material 100, and a base material support member 2 rotatably attached to the base material support member 2. a clamp member 3 capable of gripping the base material between;
A position adjustment member 29 is attached to the base 1 and is capable of adjusting the rotation angle of the clamp member 3 when the clamp member 3 grips the base material 100. Air is blown toward the gun insertion hole 15 into which the gun is inserted and fixed, and the minute gap l formed between the base material 100 supported by the base material support member 2 and the base material gripping surface 14b of the clamp member 3. The tip 201 of the stud gun 200 can be easily connected to the welding surface 1 of the base material 100 without requiring considerable skill unlike in the past.
02 in a predetermined direction, and when welding, the base material 100
The object of the present invention is to provide a stud welding jig that can easily remove foreign matter adhering to the welding surface 102 of the stud.

(Function) The base material 100 is placed at a predetermined position on the base material support member 2, and then the clamp member 3 is rotated to remove the base material 1.
00 is held by the base material support member 2 and the clamp member 3. Next, by inserting the tip 201 of the stud gun 200 into the gun insertion hole 51 of the clamp member 3, the tip 201 is inserted into the base material 100.
in a predetermined direction with respect to the welding surface 102 of. During the process of inserting the tip end 201 of the stud gun 200 into the gun insertion hole 15, air is released into the air blowing hole 16.
As a result, the foreign matter adhering to the welding surface 102 is blown out from the micro gap 1, and the welding surface 102 becomes clean. After this air blowing stops, the stud gun 200 is operated to weld the stud 202 to the welding surface 102 of the base material 100.
In this case, the axial direction of the gun insertion hole 15 can be finely adjusted by operating the position adjustment member 29 according to the welding work conditions and adjusting the rotation angle of the clamp member 3.

(Example) Hereinafter, one example of the present invention will be described based on the accompanying drawings. The stud welding jig according to this embodiment, for example, as shown in FIG. Welding surface 102 set at a predetermined position of portion 101
In addition, it is used when welding a T-shaped stud 202 ejected from the tip 201 of the stud gun 200 by the stud gun 200.

As shown in FIGS. 1 to 5, the stud welding jig includes a base material support member 2 that supports a base material 100 at a predetermined position on a base 1; A clamp member 3 that can grip the base material 100, and a drive unit 4 that drives the clamp member 3.
and a gun support member 5 that supports the stud gun 200.

The base material support member 2 includes two brackets 6, 6' fixed upright on the base 1, and a horizontal plate 7 installed and fixed substantially horizontally between the upper edges of these brackets 6, 6'. , a positioning guide 8 horizontally fixed on the upper surface of the horizontal plate 7, and a positioning guide 8 slidably fitted into the recess 8a on one side of the positioning guide 8.
It consists of a base material receiving cover 10 mounted so as to be vertically movable via a height adjusting shim 9. The base material receiving cover 10 is made of stainless steel, for example, to which slag and scattered molten metal generated during welding are difficult to adhere. A back bar 11 made of copper and serving as a grounding part for the base material 100 is fixed adjacent to the base material receiving portion 10a.

On the other hand, the clamp member 3 has a bracket 6,
A clamper base 13 rotatably attached to a rotation shaft 12 supported by upper bearings 6a, 6'a of the clamper base 13, and an upper component 1 of the clamper base 13.
3a and a clamper main body 14 fitted to the clamper body 14. The clamper main body 14 is made of stainless steel like the base material receiving cover 10, and a base material gripping portion 14a is formed on the upper part thereof. The base material gripping portion 14a is formed with a base material gripping surface 14b that can face the base material supporting surface 10b. Here, this base material gripping portion 14a
A predetermined gap is formed between the base material gripping surface 14b of the base material 1 and the base material supporting surface 10b of the base material receiving portion 10a.
It is set so that a minute gap l is formed between the welding surface 102 of 00 and the base metal gripping surface 14b. Further, a gun insertion hole 15 into which the tip 201 of a stud gun can be inserted and fixed is formed in the base material gripping part 14a, and the aforementioned micro gap l is formed in the axial direction of this gun insertion hole 15. In other words, when the base material 100 is gripped and fixed between the base material receiving cover 10 and the clamper main body 14, it is set to be perpendicular to the welding surface 102. Further, an air blowing hole 16 is bored in this base material gripping part 14a, and one end 16a of the air blowing hole 16 is communicated with the tip of the gun insertion hole 15, and the air blowing hole 16 is connected to the tip of the gun insertion hole 15 through the tip of the gun insertion hole 15. It is designed so that it can be exposed to a minute gap l. Air blowout hole 16
The other end 16b is opened at the upper end surface of the base material gripping part 14a, and an air hose (not shown) connected to a compressed air supply source (not shown) can be attached here. A limit switch 18 is provided between one end 16a of the air blowing hole 16 in the gun insertion hole 15 and the opening end on the stud gun insertion side. It is connected to a control unit (not shown) of the compressed air supply source. Further, a lower portion of the clamper main body 14 can be freely engaged with and detached from the other side recess 8b of the positioning guide 8.

On the other hand, the drive section 4 includes a connecting plate 21, which has a connecting shaft 20 rotatably attached to the lower end 13b of the clamper base 13 supported at one end, and a connecting plate 21 having a rod 22 fixed to the other end. Rod 2 of board 21
2 into which the cylinder 23 is inserted so as to be driveable along its axial direction. The cylinder 23 is attached via a support shaft 26 to bearing portions 25a, 25'a of support plates 25, 25' fixed to the outer sides of the brackets 6, 6', respectively. It is possible to swing around a little.

The gun supporting member 5 is connected to the connecting shaft 2 of the connecting plate 21.
A support base 27 that is erected and fixed at a predetermined position on the base 1 in the vicinity of 0 and has a substantially U-shape; A movable part 29a is attached to the outer side of one of the gun support base 28 and the support base 27 so as to be positioned in the axial extension of the rod 22, and can be finely adjusted along the axial direction of the rod 22. The position adjusting member 29 has a position adjustment member 29. The position adjusting member 29 can come into contact with the lower end 13b of the clamper base 13 at its movable portion 29a.

Next, the operation of this embodiment will be explained.

The actuation of the drive unit 4 draws the rod 22 into the cylinder 23, rotates the clamper member 3 counterclockwise around the rotation shaft 12 as shown by arrow A in FIG. The base material gripping part 14a of the base material receiving part 1 of the base material receiving gasket 10
Separate from 0a. Next, the base material 100 is placed on the base material support surface 10b of the base material receiving portion 10a so that the welding surface 102 faces in a predetermined direction.

Then, by operating the drive unit 4 in the opposite direction, the rod 22 is pushed out from the cylinder 23, and the clamper member 3 is moved so that the lower end 13b of the clamper base 13 is moved to the movable part 29a of the position adjustment member 29. Rotate clockwise until it touches the Here, the base material 100 is gripped and fixed between the base material receiving part 10a and the base material gripping part 14a, and comes into contact with the back bar 11 reliably, but in this case, as described above, the base material A predetermined minute gap 1 is formed between the welding surface 102 of 100 and the base material gripping surface 14b of the base material gripping portion 14a. Further, the axial direction of the gun insertion hole 15 is oriented in a predetermined direction (perpendicular direction in this case) with respect to the welding surface 102, and one end 16a of the air blowing hole 16 is connected to the gun insertion hole 15 and the small gap. The welding surface 102 is faced through the welding surface 102. Next, Stud Gun 20
0 is placed on the gun holder 28 with its back 203 facing downward, and further, the distal end 201 is inserted into the gun insertion hole 15 while being aligned with the top surface of the gun holder 28. Here, Stud Gun 2
00 is supported and fixed in the gun insertion hole 15 and faces perpendicularly to the welding surface 102 along the axial direction of the gun insertion hole 15.
On the other hand, at the beginning of the insertion of the tip 201 of the stud gun 200 into the gun insertion hole 15, the limit switch 18 is pressed into contact with the tip 201 of the stud gun 200 and is turned on. As a result, compressed air is force-fed from the aforementioned compressed air supply source (not shown) to the air blowing hole 16 via the air hose.
The compressed air force-fed to this air blow-off hole 16 is ejected from one end 16a of the air blow-off hole 16 into the gun insertion hole 15, and further passes through the gun insertion hole 15 and the minute gap l to the welding surface. 102 is sprayed. By blowing this compressed air onto the welding surface 102, foreign matter adhering to the welding surface 102 is blown away to the outside through the minute gap l.
The welding surface 102 is now in a clean state.

When the stud gun 200 is operated after the air has stopped blowing out, the stud 202 ejected from its tip 201 is reliably and firmly welded to the clean welding surface 102, and the welding surface 1 of the stud 202 is
The welding direction with respect to 02 is always constant (perpendicular).

In this case, the welding surface 102 of the gun insertion hole 15
When changing the direction of
The rotation angle of the clamp member 3 with respect to the base material support member 2 is appropriately adjusted by moving the clamp member 3 in and out by an appropriate amount.

Note that since both the base metal receiving cover 10 and the clamper body 14 are made of stainless steel, at least the base metal support surface 10b and the base metal gripping surface 14b are free from slag and scattering generated during welding. There is almost no adhesion of molten metal, etc.

(Effects of the Invention) As explained above, according to the first invention, the base material support member is provided on the base and the clamper member is rotatably attached to the base material support member, so that the clamp member By rotating the base material, the base material can be gripped and fixed between the base material support member and the clamp member. On the other hand, since the clamp member is provided with a gun insertion hole and an air blowing hole, the gun insertion hole can be By inserting the tip of the stud gun, this tip can always be supported and fixed in a predetermined direction with respect to the welding surface of the base metal, and the clamp member can be gripped from the air blowing hole to the welding surface of the base metal. The welding surface of the base metal can be easily cleaned by blowing air toward the minute gap between the base metal and the surface.

Therefore, the studs fired from the stud gun can always be reliably and firmly welded to the welding surface of the base metal in a predetermined direction, regardless of the skill level of the operator.

Further, according to the second invention, a base material support member is provided on the base, a clamper member is rotatably attached to the base material support member, and a position adjustment member is further attached to the base; Since the clamp member is provided with a gun insertion hole and an air blowout hole,
In addition to the effects of the first invention described above, by appropriately adjusting the rotation angle of the position adjustment member with respect to the clamp member, the directionality of the gun insertion hole with respect to the welding surface of the base metal can be adjusted according to the desired welding work conditions. It is possible to reliably and easily change and maintain the welding work, thereby allowing the welding work to be performed with higher precision.

[Brief explanation of drawings]

1 is a front view of a stud welding jig according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view taken along the line - in FIG. 1, and FIG. 4 is a stud welding jig shown in FIG. 1. FIG. 5 is a side view of the welding jig, FIG. 5 is a partial sectional view taken along the line - in FIG. 1, and FIG. 6 is a perspective view showing the relationship between the base material and the stud gun. DESCRIPTION OF SYMBOLS 1... Base, 2... Base material support member, 3... Clamp member, 10b... Base material support surface, 14b... Base material gripping surface, 15... Gun insertion hole, 16... Air blowing hole, 29...Position adjustment member, 29a...Movable part, 100...Base metal, 102...Welding surface, 200
...Stud gun, 201...Tip, l...Minute gap.

Claims (1)

[Claims] 1. Between a base, a base material support member provided on the base and supporting the base material, and a base material support member rotatably attached to the base material support member. A clamp member capable of gripping a base material, a gun insertion hole into which the tip of a stud gun is inserted and fixed, a base material supported by the base material support member, and a base material gripping surface of the clamp member. A stud welding jig characterized in that it is provided with an air blowing hole capable of blowing air into a minute gap formed between the stud welding jig and the stud welding jig. 2. The stud welding jig according to claim 1, wherein the clamp member is made of stainless steel at least in the vicinity of the base material gripping surface. 3. The stud welding jig according to claim 1 or 2, wherein the base metal support member is made of stainless steel at least in the vicinity of the base metal support surface. 4. A base material supporting member that is rotatably attached to the base material supporting member and capable of gripping the base material between the base, the base material supporting member provided on the base and supporting the base material, and the base material supporting member rotatably attached to the base material supporting member. comprising a clamp member, and a position adjustment member attached to the base and capable of adjusting the rotation angle of the clamp member when the clamp member grips the base material,
The clamp member has a gun insertion hole into which the tip of the stud gun is inserted and fixed, and a gun insertion hole that extends toward a minute gap formed between the base material supported by the base material support member and the base material gripping surface of the clamp member. A stud welding jig characterized in that each jig is provided with an air blowing hole through which air can be blown. 5. The stud welding jig according to claim 4, wherein the clamp member is made of stainless steel at least in the vicinity of the base material gripping surface. 6. The stud welding jig according to claim 4 or 5, wherein the base metal support member is made of stainless steel at least in the vicinity of the base metal support surface.