JP2003103373A - Bobbin wound welding wire, welding device, and welding method, and welding method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that there is a fear of generating rust on a welding wire at the part in contact with the bobbin barrel caused by wetting and moisture absorption during the transportation, storage and usage of the bobbin wound welding wire. SOLUTION: The generation of the rust of the welding wire can be prevented by using a bobbin whose barrel part for winding the welding wire is of double structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin winding welding wire, a welding apparatus using the bobbin winding welding wire, and a welding method for welding using the welding apparatus using the bobbin winding welding wire. .

[0002]

2. Description of the Related Art Conventionally, a bobbin has a hole at the center of its flange for setting it on a wire winding machine for welding.
The body is composed of one paper cylinder. Also, it has a bobbin that is sequentially wound from the inner layer to the outer layer while twisting the welding wire, and pulls out the wire to be installed with one of the flanges on both sides sandwiching the body of the bobbin as the bottom surface. There is a wire withdrawing device. The bobbin used here is obtained by winding a welding wire, which is twisted once per winding, and uses a rotary jig for drawing out the wire.

A general bobbin, apparatus and method for welding using the rotary drawing apparatus for the welding wire will be described with reference to FIGS. 5, 6 and 7. Here, FIG. 5 is a view showing a conventional bobbin, (a) is a plan view,
FIG. 6B is a front view in which a main part is broken, FIG. 6 is a view showing a general rotary drawing device for a welding wire, FIG. 6A is a plan view, and FIG. 6B is a front view in which a main part is broken. It is a figure and Drawing 7 is a figure showing the outline of the general welding device using the rotation type extraction device of the general welding wire.

Further, in FIG. 5, 1 is a bobbin, 6 is a bobbin body, 15a and 15b are bobbin flanges, 20
Reference numerals a and 20b denote bobbin flange hole portions. Further, in FIG. 6, 2 and 2a are welding wires, 3 and 3
a is a rotatable part, 4 is a drawing device rotating part, 5 is a wire passing part, 6 is a bobbin body part, 7 is a wire feeding tube, 8 is a rotary drawing device and a wire feeding tube is connected, and a wire is passed through. The welding wire from the part, 9 is the direction in which the welding wire is sent out, 14 is the wire outlet, 16 is the wire sending direction, and 17 and 17a are the drawing device rotating part rotation directions. Further, the same reference numerals are given to the same components in the description of the configuration of FIG. 5, and the duplicate description is omitted. Further, in FIG. 7, 10 is a wire feeder, 11 is a welding torch, and 12 is a welding torch.
Is an object to be welded, 13 is a welding power source, and 18 is a welding tip. Further, the same reference numerals are given to the same components in the description of the configurations of FIGS.

A conventional bobbin will be described with reference to FIG. The bobbin flanges 15a and 15b are made of wood or resin, and bobbin flange holes 20a and 20b for setting them in the welding wire winder are provided in the center thereof. The bobbin flange hole 20a located above is used as a mounting hole for the rotary drawing device. The bobbin body 6 is made of paper, that is, a paper tube.

Next, the rotary drawing apparatus for the welding wire will be described with reference to FIG. First, the bobbin 1 around which the welding wire 2 is wound is installed with one flange as the bottom surface. Further, the rotatable portion 3 is fixed near the center of the upper flange of the bobbin 1. The drawing device rotating part 4 is attached to the rotatable part 3 so that the bobbin 1 and the drawing device rotating part 4 can freely rotate with each other via the rotatable part 3. Here, since the bobbin 1 is wound with a welding wire and is very heavy, and the drawing device rotating part 4 is made light, only the drawing device rotating part 4 is freely movable in the drawing device rotating part rotating direction 17,
It can rotate freely in the direction of 17a.

Further, the wire passing portion 5 is connected to the pulling device rotating portion 4
It is fixed to and is rotated integrally with the drawer rotation unit 4. The wire passing portion 5 has a tubular shape that allows the wire to pass through inside, and is used for preventing bending of the wire passing therethrough and for insulation. As an example, a coiled steel having a polyolefin heat-shrink tube coated on the outside thereof is used.

The upper end of the pulling device rotating part 4 and the upper end of the wire passing part 5 are integrally mounted on the rotatable part 3a. The rotatable portion 3a has the same structure as the rotatable portion 3. Further, the wire feeding tube 7 is attached to the rotatable portion 3a together with the portion 8 for connecting the rotary drawing device and the wire feeding tube and discharging the welding wire from the wire passing portion. As a result, the pulling device rotating section 4 and the wire passing section 5 freely rotate about the straight line connecting the rotation centers of the rotatable sections 3 and 3a as the rotation axis. The rotatable parts 3 and 3a specifically use bearings or the like.

Under these configurations, the welding wire 2 wound around the bobbin 1 is connected to the wire drawing port 14 on the outer circumference of the bobbin 1.
The wire feed section 5 and the wire feed tube 7.

With the above structure, when the welding wire 2 is fed in the wire feeding direction 16, the wire passing portion 5 naturally moves on the outer periphery of the bobbin 1 in the drawing device rotating portion rotating direction 17, 1.
It can be pulled out sequentially by turning in the direction of 7a. The above is a description of a general welding wire rotary drawing device.

Further, with reference to FIG. 7, a general apparatus and method for welding using a conventional rotary drawing apparatus for welding wire will be described. First, wire feeding tube 7
Connects the rotary drawing device and the wire feeding tube and continues the wire feeding portion from the portion 8 where the welding wire is taken out to before the wire feeding device 10. Further, the welding wire 2 is passed through the inside of the wire feeding tube 7 and guided to the tip of the welding torch 11 via the wire feeding device 10. A tubular welding tip 18 is installed at the tip of the welding torch 11, and the welding wire 2 is taken out from the tip of the welding tip 18 to aim at the welding position.

With the above-described structure, the wire feeding device 10
To drive the exposed welding wire 2b. This wire feeding device 10 is driven at the same time as welding is performed, and at the same time, the welding power source 13 causes the welding wire 2 to move.
And the object to be welded 12 are installed so that a predetermined current and voltage can be applied.

When the welding is performed as described above, the welding wire 2 is pulled out in the wire feeding direction 16 by driving the wire feeding device 10. By this operation, the wire passing portion 5 rotates on the outer circumference of the bobbin 1 in the directions 17 and 17a of the pulling device rotating portions shown in FIG. 5, and sequentially pulls out the welding wire 2. The drawn welding wire 2 passes through the wire passing portion 5, passes through the wire drawing tube and the wire feeding tube, and at the portion 8 where the welding wire is taken out from the wire passing portion, exits from the rotary drawing device and continues. It is guided to the tip of the welding torch 11 through the wire feeding tube 7 and the wire feeding device 10.

Further, the welding wire 2 emitted from the tip of the welding tip 18 at the tip of the torch is fed so as to come to the target position for welding. Then, a predetermined current and voltage are applied between the welding wire 2 and the object 12 to be welded by a welding power source 13, and an arc is generated between the welding wire 2 and the object 12 to weld them. The above is a description of a general apparatus and method for welding using a general welding wire rotary drawing apparatus.

[0015]

However, in the above-mentioned conventional example, the bobbin body portion 6 of the bobbin winding welding wire uses a paper tube, and the water during transportation, storage or use of the bobbin winding welding wire is used. Rust may occur on the welding wire in the portion in contact with the bobbin body due to wetting or moisture absorption.

Accordingly, an object of the present invention is to provide a bobbin winding welding wire in which the wire in the portion in contact with the bobbin body does not rust.

[0017]

In the bobbin winding welding wire according to the first aspect of the present invention, the body of the bobbin around which the welding wire is wound has a multiple structure.

A bobbin winding wire according to a second aspect of the present invention has the bobbin body having a double structure.

A bobbin winding wire according to a third aspect of the present invention is the wire according to the first or second aspect, wherein at least one of the layers forming the body of the bobbin that is not the outermost layer is a resin.

A bobbin-wound welding wire according to a fourth aspect of the present invention is the bobbin winding wire according to any one of the first to third aspects, in which the bobbin is sequentially wound from the inner layer to the outer layer while twisting the welding wire.

A bobbin winding welding wire according to a fifth aspect of the present invention is the wire according to any one of the first to fourth aspects, in which the body of the bobbin is inserted into the hollow portion of the flange.

A bobbin winding welding wire according to a sixth aspect of the present invention is the wire according to the fifth aspect, in which at least one layer which is not the outermost layer of the layers forming the body of the bobbin is inserted into the flange hollow portion.

According to a seventh aspect of the present invention, there is provided a welding device comprising the bobbin winding welding wire according to any one of the first to sixth aspects, a wire feeding device for drawing the welding wire, and the drawn welding wire. A welding torch for sending to a welding location of an object to be welded and a welding power source for supplying a welding current between the welding wire and the object to be welded are provided.

According to the eighth aspect of the welding method, the welding apparatus according to the seventh aspect is used to supply a wire to the object to be welded.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION The operation of the present invention will be described below.

In the bobbin-wound welding wire according to the first aspect, since the body of the bobbin around which the welding wire is wound has a multiple structure, rusting of the welding wire can be prevented.

In the bobbin winding wire according to the second aspect of the present invention, since the bobbin has a double body, the rusting of the welding wire can be prevented at a low cost.

In the bobbin winding welding wire according to the third aspect, at least one layer other than the outermost layer constituting the body portion of the bobbin is made of resin, so that moisture does not reach the welding wire from the bobbin flange gap. Therefore, rusting of the welding wire can be prevented.

Since the bobbin-wound welding wire according to claim 4 is for preventing rusting of the welding wire and for twisting the welding wire, the bobbin is sequentially wound on the bobbin from the inner layer to the outer layer. During welding, the welding wire does not rotate and is pulled straight out to the welding torch to stabilize the target position of the wire.

In the bobbin winding welding wire according to the fifth aspect of the present invention, since the body of the bobbin is inserted into the hollow portion of the flange, moisture is prevented from entering through the gap of the bobbin flange, and the welding wire does not reach. Therefore, the rusting of the welding wire can be further prevented.

In the bobbin winding wire according to the sixth aspect of the present invention, at least one of the layers forming the body of the bobbin, which is not the outermost layer, is inserted into the flange hollow portion. Since the penetration of water is prevented and the welding wire is not reached, rusting of the welding wire can be further prevented and the welding wire can be manufactured at a low cost.

According to a seventh aspect of the present invention, there is provided a welding device, wherein a bobbin winding welding wire for preventing rusting of the welding wire, a wire feeding device for drawing the welding wire, and the drawn welding wire to be welded. The welding torch to be sent to the welding point of No. 1 and a welding power source for supplying a welding current between the welding wire and the object to be welded are provided, which prevents rusting of the welding wire. Make it easier for people to handle.

The welding method according to claim 8 is for welding by supplying a wire to an object to be welded by using a welding device using a bobbin winding welding wire for preventing rusting of the welding wire. Prevents rusting of the wire, making it easier for workers to weld.

Here, the progress of efforts to solve the above problems will be described below. As a result of repeated studies, it was found that the double structure of the bobbin body is effective in preventing rusting of the wire. The results are shown in Table 1 and Table 2.
Shown in.

Table 1 shows the conditions used for the examination, and the materials and outer diameters of the moisture-proof cylinder, the bobbin cylinder and the flange for the three types of Embodiments 1 and 2 of the present invention and the conventional example, respectively. And the thickness are displayed. The inner widths between the flanges on both sides are all the same (350 mm).

The bobbins shown in Table 1 were manufactured, wound with a welding wire, humidified through a bobbin flange hole by a humidifier for one week, and then the rust occurrence state of the wire was confirmed. As a result, as shown in Table 2, in the conventional example, rust was found in the body contact portion near the flange, whereas in both the first and second embodiments of the present invention, rust was found. I couldn't do it.

[0037]

[Table 1]

[0038]

[Table 2]

Here, the configuration of the first and second embodiments of the present invention will be described.

(Embodiment 1) Regarding the present embodiment,
This will be described with reference to FIG. Here, FIG. 1 is a diagram showing a bobbin of a bobbin winding welding wire according to the present embodiment,
(A) is a plan view and (b) is a front view in which a main part is broken.

In FIG. 1, 1 is a bobbin, 6 is a bobbin body, 21 is a moisture-proof cylinder, and 15a and 15b are bobbin flanges.

Further, as shown in Table 1, the bobbin body 6 and the moisture-proof cylinder 21 in this embodiment are made of paper.
The moisture-proof cylinder 21 is provided inside the bobbin body 6 around which the welding wire is wound. The moisture-proof cylinder 21 absorbs moisture from the bobbin body 6, and the bobbin flange 15
Moisture did not reach the welding wire through the gap between a and 15b, and rusting of the welding wire could be prevented.

Further, FIG. 3 is a view showing a rotary drawing device for a welding wire as an example of a method for drawing out the welding wire using such a bobbin winding welding wire. Further, FIG. 4 is a diagram showing a welding apparatus using the rotary drawing apparatus for the welding wire and a welding method.

The present embodiment is characterized by the structure of the bobbin winding welding wire which prevents rusting.
Since the welding device and the welding method are the same as those described in the conventional technique with reference to FIGS. 6 and 7, duplicate description will be omitted, but the welding device using the bobbin winding wire according to the present embodiment will be omitted. Since the method and the method prevent rusting, it is easy for the operator to handle and the welding method is facilitated.

(Embodiment 2) Regarding the present embodiment,
This will be described with reference to FIG. Here, FIG. 2 is a diagram showing a bobbin of a bobbin winding welding wire according to a second embodiment of the present invention, in which (a) is a plan view and (b) is a front view shown in section. In FIG. 2, 1 is a bobbin, 6 is a bobbin body, 21
Is a moisture-proof cylinder, and 15a and 15b are bobbin flanges.

Further, as shown in Table 1, in this embodiment, the bobbin body 6 is made of paper and the moisture-proof cylinder 21 is made of resin. The moisture-proof cylinder 21 is provided inside the bobbin body 6 around which the welding wire is wound. This moisture-proof cylinder 21
As a result, the bobbin body 6 absorbs moisture or moisture does not reach the welding wire through the gap between the bobbin flanges 15a and 15b, so that rusting of the welding wire could be prevented.

In this embodiment, the resin moisture-proof cylinder 21 is inserted into the hollow portions of the flanges 15a and 15b at both ends of the bobbin, as shown in FIG. The bobbin body 6 absorbs moisture due to the moisture-proof cylinder 21 inserted into the hollow portion of the flange, and the bobbin flange 15a,
Water did not reach the welding wire through the gap with 15b, and the rusting of the welding wire could be prevented.

Further, FIG. 3 is a view showing a rotary drawing device for the welding wire as an example of a method for drawing out the welding wire using the bobbin winding welding wire. Further, FIG. 4 is a diagram showing a welding apparatus using the rotary drawing apparatus for the welding wire and a welding method.

The present embodiment is characterized by the structure of the bobbin winding welding wire which prevents rusting.
Since the welding device and the welding method are the same as those described in the conventional technique with reference to FIGS. 6 and 7, duplicate description will be omitted, but the welding device using the bobbin winding wire according to the present embodiment will be omitted. Since the method and the method prevent rusting, it is easy for the operator to handle and the welding method is facilitated.

Although not shown in the drawings, in the present embodiment, a bobbin flange hole for setting in the welding wire winder provided in the central portion of the flange in the conventional example and the first embodiment, It is provided on the moisture-proof cylinder and has the same function.

In the first and second embodiments, the bobbin body has a double structure in order to achieve the object at the lowest cost. However, in order to further pursue rust prevention, the bobbin body may have a multiple structure. Good. Further, in the second embodiment, only the inner layer portion of the double structure is made to enter the hollow portion of the flange, but when there is a problem in structure or in ease of making, the outermost layer is also made to enter the hollow portion. The same effect can be obtained with the structure. Further, in the case of the multiple structure, the same effect can be obtained even if any of the layers is inserted into the hollow portion. Therefore, any layer may be inserted into the hollow portion.

Further, in FIG. 2 used in the description of the second embodiment, the hollow portion of the flange is shown as penetrating, but even if it is not completely penetrating, the surface side of the flange that sandwiches the body portion. The same effect can be obtained by providing an intruding portion and inserting at least one layer of the body portion into that portion. Therefore, the flange hollow portion does not necessarily need to penetrate.

Further, in the second embodiment, the hollow portion of the flange is shown to be provided on the flanges on both sides, but when the infiltration of water is on only one side, depending on the situation,
The hollow portion may be provided on only one side.

Further, in the second embodiment, a resin-made one is used as the moisture-proof cylinder, but any kind of material can be used as long as it is a material that is effective in preventing water from entering and rust-proofing.

In any of the present embodiments, there is no particular description about how to wind the wire around the bobbin.
It is also effective for a bobbin wound welding wire that is wound on a bobbin in order from the inner layer to the outer layer while twisting the welding wire. When this wire is used, the welding wire does not rotate and is pulled straight out to the welding torch. And stabilize the target position of the wire.

[0056]

According to the bobbin winding welding wire of the present invention, it is possible to obtain a welding wire free from rust. In addition, the bobbin winding welding wire according to the present invention does not cause rust on the welding wire and provides good welding results.

[Brief description of drawings]

FIG. 1 is a plan view showing a bobbin of a bobbin winding welding wire according to a first embodiment of the present invention, FIG.

FIG. 2A is a plan view showing a bobbin of a bobbin winding welding wire according to a second embodiment of the present invention, and FIG.

FIG. 3 is a plan view showing a rotary drawing device for a welding wire using a bobbin winding welding wire according to an embodiment of the present invention, FIG.

FIG. 4 is a diagram showing a welding device using a bobbin winding welding wire according to an embodiment of the present invention.

FIG. 5 is a diagram showing a conventional bobbin. (A) is a plan view (B) is a front view in which a main part is broken.

FIG. 6 is a plan view showing a rotary welding wire drawing device for a general welding wire, and FIG.

FIG. 7 is a diagram showing an outline of a general welding device using a rotary welding wire drawing device for a general welding wire.

[Explanation of symbols]

1 bobbin 2, 2a, 2b Welding wire 6 bobbin body 10 Wire feeder 11 welding torch 12 Object to be welded 13 Welding power source 21 Moisture-proof cylinder

Claims (8)

[Claims] 1. A bobbin wound wire in which the body of the bobbin wound with the welding wire has a multiple structure. 2. The bobbin body has a double structure.
The bobbin winding wire described. 3. The bobbin winding welding wire according to claim 1, wherein at least one layer which is not the outermost layer of the layers forming the body of the bobbin is a resin. 4. The bobbin-wound welding wire according to claim 1, wherein the welding wire is wound around the bobbin sequentially from the inner layer to the outer layer while being twisted. 5. The bobbin winding wire according to claim 1, wherein the body of the bobbin is inserted into the hollow portion of the flange. 6. The bobbin winding wire according to claim 5, wherein at least one of the layers forming the body of the bobbin, which is not the outermost layer, is inserted into the flange hollow portion. 7. The bobbin winding welding wire according to any one of claims 1 to 6, a wire feeding device for drawing out the welding wire, and the drawn out welding wire at a welding position of an object to be welded. A welding device provided with a welding torch to be fed and a welding power source for supplying a welding current between the welding wire and the object to be welded. 8. A welding method for supplying a wire to an object to be welded by using the welding apparatus according to claim 7.