JPH08215890A - Supporting jig for welding - Google Patents

Abstract

PURPOSE: To provide consumable ceramics supporting jig for welding capable of achieving the horizontal arc welding using consumable ceramics without any interruption by making a magnet attracted on and fixed to the face side of a member to be welded. CONSTITUTION: Consumable ceramics 3 is bonded and fixed to the face side of a member 1b to be welded along a groove 2 by adhesive tapes 4, 5. A spring compression adjusting nut 17A is tightened to allow a compressive coil 16A to be appropriately compressed in the condition where whole consumable ceramics supporting jig 10 is detached from the member 1b to be welded, and a magnet 14A is pressed against the surface on the consumable ceramics 3 side of an L-shaped transmission arm 13A of a pressing member 11. Then, the whole supporting jig 10 is brought close to the member 1b to be welded to allow a pressing rod 12 to be abutted on the consumable ceramics 3, and a base end part 13Aa of the L-shaped transmission arm 13 is abutted on the face side of the member 1b to be welded. The magnet 14A is advanced together with a supporting bolt 15a while further compressing the compressive coil spring 16A toward the member 1b to be welded by the magnetic force, and attracted on the surface side of the member 1b to be welded, and fixed thereto.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding surface-supporting material supporting jig for pressing and supporting a surface-supporting material used for preventing sagging of weld metal in lateral arc welding. The present invention relates to a welding front cover material supporting jig capable of reliably preventing the front cover material attached by an adhesive tape from dropping on the front surface of the member to be welded along the groove.

[0002]

2. Description of the Related Art Conventionally, a cover member has been used to prevent the weld metal from dripping during horizontal arc welding. FIG. 8 is a side sectional view showing a state in which the front cover member is adhesively fixed with an adhesive tape.

As shown in FIG. 8, the upper welded member 1a
And a lower welded member 1b are butted against each other to form a welding joint for lateral welding having a V-shaped groove 2.
A double-sided adhesive tape 4 is adhered to one surface of the long-length front cover material 3 corresponding to the welded member side, and an aluminum tape 5 with an adhesive is adhered to the other surface. Then, the ceramic front cover material 3 is formed by the double-sided adhesive tape 4 and the adhesive-attached aluminum tape 5,
The lower surface of the member to be welded 1b is adhesively fixed along the groove 2. In this case, the front cover member 3 is adhesively fixed such that the upper portion thereof projects upward from the lower edge portion 2a of the groove 2. In addition, the standard length of the front cover material 3 is about 600 mm (width is about 30 mm), and in the case of a welded joint exceeding this length, a plurality of front cover materials 3 are used according to the groove length. They are arranged in a line along the groove and are fixed by adhesion.

When the front cover material 3 is attached to the front surface of the member 1b to be welded in this way and the horizontal posture arc welding of the groove 2 is performed, the weld metal which tends to hang down from the groove 2 is used as the front cover material 3. Is blocked by the upper end of the groove and solidifies in the groove 2.
Therefore, dripping of the weld metal is prevented, and the welding of the groove 2 of the lateral welded joint is completed by performing the welding of two layers or three layers. After that, the front cover member 3 is peeled off from the member to be welded 1b, and the welding operation is completed. Note that FIG. 8 shows the weld beads up to the second layer in the three-layer welding.

[0005]

However, in the case where the front cover material 3 is adhered and fixed along the groove 2 to the front surface of the member to be welded 1b by the above-described adhesive tapes 4 and 5, welding is performed. With the progress of the above, the adhesive strength of the adhesive tapes 4 and 5 was lowered by the welding heat, and the cover member 3 often dropped during welding. For this reason, it is necessary to interrupt the arc welding and re-bond and fix the surface covering material again, or to repair the weld bead joint part due to the interruption of welding, and it is not possible to reliably perform horizontal arc welding using the surface covering material. There was a problem.

The present invention has been made in order to solve the above-mentioned problems, and when attaching a front metal member for preventing the dripping of the weld metal to a member to be welded with an adhesive tape to perform transverse arc welding, Even if the adhesive strength of the tape is reduced due to welding heat, the front cover material can be prevented from falling, which enables horizontal arc welding using the front cover material to be reliably performed without interruption. An object is to provide a surface support material supporting jig.

[0007]

In order to achieve the above-mentioned object, a welding surface-supporting material supporting jig according to the invention of claim 1 has a tip end portion to be brought into contact with the surface-supporting material and a front surface side of a member to be welded. A pressing member for pressing the front cover member against the front surface of the member to be welded, and a support shaft for movably supporting the pressing member with respect to the front cover member. A magnet for adhering to the front surface of the member to be welded to position the pressing member with respect to the surface member, and a magnet fitted and supported on the outer side of the support shaft, one end of which is an opposite surface member of the pressing member. Side surface is contacted, while the other end is contacted with a spring pressure adjusting nut screwed to the support shaft, and presses the pressing member to press the front cover member against the front surface of the member to be welded. And a compression coil spring. Further, a welding front cover material supporting jig according to a second aspect of the present invention is the welding front cover material supporting jig according to the first aspect, wherein the pressing member has a constant compression amount of the compression coil spring. It is characterized in that a stopper member for restricting the forward movement of the spring pressure adjusting nut is provided.

[0008]

In the welding surface-supporting material supporting jig according to the present invention, when the surface-supporting material is adhesively fixed to the surface of the lower side member to be welded along the groove with the adhesive tape, first, With the entire patch support jig separated from the member to be welded, tighten the spring pressure adjustment nut to properly compress the compression coil spring, and press the magnet against the surface of the pressing member on the front patch (weld member side). Keep it. Next, when the entire supporting jig is brought close to the member to be welded, the tip of the pressing member is brought into contact with the front cover member, and the base end of the pressing member is brought into contact with the surface of the member to be welded. The magnetic force causes the compression coil spring to further move from the surface of the pressing member that has been pressed until then toward the member to be welded while moving forward together with the support shaft, and to be attracted to the surface of the member to be welded. Then fixed. Then, when the magnet is attracted to and fixed to the member to be welded, the base end portion of the member to be welded is used as a fulcrum, and the compression coil spring contact portion of the pressing member is pressed as a force point by the elastic urging force of the compression coil spring. As a result, the tip end portion of the pressing member serves as a point of action, and a pressing force for pressing the front cover material toward the member to be welded acts on the tip portion. In this way, the front cover member can be reliably pressed against the front surface of the member to be welded.

It is preferable that the pressing force for pressing the front cover material against the member to be welded is a constant value that does not vary and satisfies a required magnitude. If the pressing member is provided with a stopper member that restricts the forward movement of the spring pressure adjusting nut, when the magnet is attracted and fixed to the surface of the front surface of the welded member, the spring pressure adjusting nut that has moved forward together with the support shaft is a stopper member. When it stops before, the spring pressure adjusting nut may be manually tightened until it comes into contact with the stopper member.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a partially cutaway side view showing a welding front cover material supporting jig according to an embodiment of the present invention, FIG. 2 is a front view of the welding front cover material supporting jig shown in FIG. 1, and FIG. 4 is a view for explaining a state before mounting the welding front cover material supporting jig shown in FIG. 4, and FIGS. 4 and 5 are diagrams for explaining a state when the welding front cover material supporting jig shown in FIG. 1 is mounted. It is a figure.

In FIGS. 1 and 2, reference numeral 11 denotes a pressing member, which is a front cover member 3 adhered and fixed by adhesive tapes 4 and 5 along the groove 2 on the front surface of the lower welded member 1b. Is to be pressed against the front surface of the welded member 1b. The pressing member 11 has a small diameter, a circular cross section, a pressing rod 12 having a length slightly shorter than the length of the front cover member 3, and two L-shaped transmission arms 13A and 13B that are L-shaped in a side view. The pressing rod 12
L-shaped transmission arms 13A, 13A,
13B is fixed. The pressing rod 12 constitutes the tip of the pressing member 11, and is for abutting against the front cover member 3 to press it. The L-shaped transmission arms 13A and 13B have base end portions 13Aa and 13Ba that are in contact with the surface of the welded member 1b on the front side.

In the pressing member 11, one L-shaped transmission arm 13A of the pressing member 11 is loosely penetrated by a support bolt 15A of a magnet 14A, which will be described later, and the other L-shaped transmission arm 13B has the same configuration as described later. By being loosely penetrated by the support bolt 15B of the magnet 14B of the
Is movably supported with respect to.

The magnet 14A is a disk-shaped permanent magnet, and has a support bolt 15A as a support shaft which is erected on the opposite side of the member 1b to be welded. The other magnet 14B
Also has the same structure. These magnets 14A and 14B are
The support bolts 15A and 15B movably support the pressing member 11 against the front cover member 3, and the member to be welded 1b is welded.
It is for positioning the pressing member 11 with respect to the front cover member 3 by adsorbing it on the front surface.

Reference numeral 16A is a compression coil spring, and this compression coil spring 16A is fitted and supported on the outside of the support bolt 15A, and one end thereof is an L-shaped transmission arm 13.
While it is in contact with the surface of A opposite to the surface-applied material side (anti-welded member 1b), the other end is in contact with a spring pressure adjusting nut (wing nut) 17A screwed to the support bolt 15A. The spring pressure adjusting nut 17A is for adjusting the compression amount of the compression coil spring 16A, and the L-shaped transmission arm 13A regulates the forward movement of the spring pressure adjusting nut 17A so as to keep the compression amount of the compression coil spring 16A constant. A stopper member 18A having a cylindrical shape is fixed in an upright posture.
Similarly, a compression coil spring 16B is fitted to the outside of the support bolt 15B of the other magnet 14B, and one end of the compression coil spring 16B is L-shaped transmission arm 13.
While being in contact with the surface of B opposite to the front pad material side, the other end is in contact with the spring pressure adjusting nut 17B screwed to the support bolt 15B. A stopper member 18B is fixed to the L-shaped transmission arm 13B. These compression coil springs 16A and 16B are used to press the pressing member 11 to press the front cover member 3 against the front surface of the welded member 1b.

In this embodiment, the pressing rod 12 is
Is made of steel, and has a round bar shape with a circular cross section so that the pressing force is concentrated by making line contact with the front cover member 3 instead of surface contact. In addition, the support bolts 15A, 15
The B and L-shaped transmission arms 13A and 13B are made of stainless steel, which is a non-magnetic material, in order to prevent the magnets from being attracted to the magnets 14A and 14B and becoming difficult to handle when they are assembled.

In the welding surface-supporting material supporting jig 10 thus constructed, the groove 2 is formed on the front surface of the member 1b to be welded.
When the front cover material 3 is adhered and fixed along with the adhesive tape, first, as shown in FIG. 3, the spring pressure adjusting nut 17A is moved in a state where the entire front cover material supporting jig 10 is separated from the welded member 1b. The compression coil spring 16A is appropriately compressed by tightening, and the magnet 14A is pressed against the surface of the L-shaped transmission arm 13A of the pressing member 11 on the surface abutting member 3 side (welded member 1b side). By performing the same operation, the other magnet 14B is also pressed against the surface of the L-shaped transmission arm 13B on the front pad 3 side (welded member 1b side).

Next, the entire supporting jig 10 is brought close to the member to be welded 1b, the pressing rod 12 is brought into contact with the front cover member 3, and the L-shaped transmission arms 13A and 13B are attached to the front surface of the member to be welded 1b. The base end portions 13Aa and 13Ba are brought into contact with each other. Then, as shown in FIG. 4, the magnet 14A
The magnetic force moves forward together with the support bolt 15A while further compressing the compression coil spring 16A toward the welded member 1b from the surface of the L-shaped transmission arm 13A, which has been pressed so far, on the front padding material 3 side, and The welding member 1b is adsorbed and fixed on the front surface. At this time, the spring pressure adjusting nut 17A moved forward together with the support bolt 15A.
Is stopped before the stopper member 18A,
As shown in, the spring pressure adjusting nut 17A may be tightened until it comes into contact with the stopper member 18A. The same applies to the other compression coil spring 16B.

When the magnets 14A and 14B are attracted to and fixed to the member to be welded 1b, the base end portions 13Aa and 13Ba abutting on the member to be welded 1b are used as fulcrums and the compression coil springs 16A and 16B are repelled. By pressing the compression coil spring contact portions of the L-shaped transmission arms 13A and 13B as force points by the force, the pressing rod 12 of the pressing member 11 becomes an action point, and the pressing pad 12 is placed on the front cover member 3
A pressing force that presses toward the welded member 1b acts. In this way, the front cover member 3 can be reliably pressed against the front surface of the member 1b to be welded, and the adhesive tapes 4, 5
Even if the adhesive force of No. 1 is reduced by the welding heat, it is possible to prevent the front cover member 3 from dropping, so that the lateral arc welding using the front cover member 3 can be reliably performed without interruption.

The length of the pressing rod 12 of the pressing member 11 is the same as the length of the front pad material (standard length is about 600 mm) when the member to be welded is flat without being curved, or Set the length slightly shorter than the length of the front pad,
If the member to be welded is curved, in order to press the front cover material against the front side of the member to be welded more securely, set the length to about one-half to one-third of the length of the front cover material and press the rod. Therefore, it is advisable to press the joints between the front padding materials with each other.

FIG. 6 is a partially cutaway side view showing a welding front cover material supporting jig according to another embodiment of the present invention, and FIG. 7 is a front view of the welding front cover material supporting jig shown in FIG. . The pressing member 11 includes four magnets instead of the two magnets 14A and 14B.
Except that it is configured to support and position
Since it is the same as that shown in FIG. 1 and FIG. 2, the common parts are denoted by the same reference numerals, and the description thereof will be omitted. Only different points will be described.

As shown in FIGS. 6 and 7, the magnet connecting plate 2
Two magnets 14A ', 14 bolted to 0A
A'is a disk-shaped permanent magnet, and its magnet connecting plate 2
It has a support bolt 15A 'as a support shaft erected on the side of the member 0b opposite to the welded member 0b. Similarly, the two magnets 14B 'and 14B' bolted to the other magnet coupling plate 20B are disk-shaped permanent magnets,
It has a support bolt 15B 'as a support shaft which is erected on the side of the member to be welded 1b of the magnet connecting plate 20B. The two sets of magnets that make up one set of these two are
The pressing member 11 is movably supported on the front cover member 3 by 5A ′ and 15B ′, and the pressing member 11 is positioned with respect to the front cover member 3 by adsorbing to the front surface of the member 1b to be welded. Has become.

According to the welding surface-supporting material supporting jig 10 'constructed as described above, the surface-supporting material 3 can be more reliably prevented from falling, and if the attraction force of the magnets is the same, 2
There is an advantage that the size can be reduced as compared with the one having the individual magnets.

[0023]

As described above, according to the welding surface-supporting material supporting jig of the present invention, the horizontal metal arc welding is performed by attaching the welding-driving-preventing surface-supporting material to the member to be welded with the adhesive tape. In this case, even if the adhesive strength of the adhesive tape is reduced by the welding heat, it is possible to prevent the front cover material from dropping, and it is possible to reliably perform the lateral arc welding using the front cover material without interruption.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a welding front cover material supporting jig according to an embodiment of the present invention.

FIG. 2 is a front view of the welding front cover material supporting jig shown in FIG.

FIG. 3 is a view for explaining a state before mounting of the welding front cover material supporting jig shown in FIG. 1.

FIG. 4 is a view for explaining a state when the welding front cover material supporting jig shown in FIG. 1 is mounted.

FIG. 5 is another view for explaining the state when the welding front cover material supporting jig shown in FIG. 1 is mounted.

FIG. 6 is a partially cutaway side view showing a welding front cover material supporting jig according to another embodiment of the present invention.

FIG. 7 is a front view of the welding front cover material supporting jig shown in FIG. 6.

FIG. 8 is a side cross-sectional view showing a state in which the front cover member is adhesively fixed with an adhesive tape.

[Explanation of symbols]

1a ... Upper welded member 1b ... Lower welded member 2
… Groove 2a… Lower edge part of groove 3… Surface pad 4
... Double-sided adhesive tape 5 ... Aluminum tape with adhesive 10, 10 '... Front support material supporting jig for welding 11 ... Pressing member 12 ... Pressing rods 13A, 13B ... L-shaped transmission arms 13Aa, 13Ba ... Base end portions 14A, 14A ', 14B, 14B' ... Magnet 15A,
15A ', 15B, 15B' ... Support bolts 16A, 1
6B ... Compression coil springs 17A, 17B ... Spring pressure adjusting nuts 18A, 18B ... Stopper members 20A, 20B
... Magnet connecting plate

Claims (2)

[Claims] 1. A pressing member having a tip end portion to be brought into contact with a front pad and a base end portion to be brought into contact with a front surface of a member to be welded, for pressing the front pad material to the front surface of the member to be welded. A magnet that has a support shaft that movably supports the pressing member with respect to the surface pad, and that positions the pressing member with respect to the surface pad by being attracted to the front surface of the member to be welded; Of the pressing member is abutted against the surface of the pressing member on the side opposite to the backing material, while the other end is abutted against the spring pressure adjusting nut screwed onto the supporting shaft, And a compression coil spring that presses the pressing member against the surface of the surface of the member to be welded by pressing the pressing member. 2. The welding according to claim 1, wherein the pressing member is provided with a stopper member for restricting the forward movement of the spring pressure adjusting nut so as to keep the compression amount of the compression coil spring constant. Table support material support jig.