JP2003010972A - Bobbin winding welding wire, welding device, and welding method therefore - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out smoothly drawing out of a welding wire and winding of the welding wire, to prevent generation of rust of the welding wire. SOLUTION: Sliding treatment is applied to the part coming into contact with the welding wire on the inner face of a flange of a bobbin for winding the welding wire. And rust prevention treatment is applied to the part coming into contact with the welding wire on the inner face of the flange of the bobbin for winding the welding wire.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin winding wire.

[0002]

2. Description of the Related Art A general apparatus and method for welding using a conventional bobbin winding wire will be described with reference to FIGS.

FIG. 9 is a cross-sectional view of a conventional bobbin winding welding wire, and FIG. 10 is a view showing a general welding wire rotary drawing apparatus using a conventional bobbin winding welding wire (a). Is a plan view, (b) is a front view in which a main part is broken, and FIG. 11 is a schematic view of a conventional welding device using a conventional bobbin winding welding wire and a general rotary drawing device. It is the figure shown.

In FIG. 9, 14a and 14b are bobbin flanges, 2 is a bobbin body, and 3 is a welding wire.

In FIG. 10, 21 is a bobbin, 22 and 22a are welding wires, 23 and 23a are rotatable parts, 24 is a drawing device rotating part, 25 is a wire passing part, and 26 is a wire passing part.
Is a wire feeding tube, 27 is a portion for connecting the rotary drawing device and the wire feeding tube to take out the welding wire from the wire passing portion, 28 is a direction for feeding the welding wire, 33 is a wire drawing outlet, and 34 is Wire feed direction, 35 and 35
“A” indicates the direction of rotation of the drawer rotation unit.

In FIG. 11, 29 is a wire feeding drive unit, 30 is a welding torch, 31 is an object to be welded, and 32 is a welding power source. In FIG. 11, the same components as those in FIG. 10 are designated by the same reference numerals, and duplicate description is omitted.

A conventional welding wire bobbin will be described with reference to FIG.

The welding wire 2 has a bobbin 14 wound in order from the inner layer to the outer layer while twisting the bobbin 14. The flange of the bobbin 14 is made of wood, and its diameter is the same on the upper side and the lower side. .

A general welding wire rotary drawing apparatus will be described with reference to FIG.

The bobbin 21 on which the welding wire 22 is wound is installed with the flange on one side facing down, and the rotatable portion 2
3 is fixed near the center of the upper flange of the bobbin 21.

Further, the drawing device rotating part 24 is attached to the rotatable part 23 so that the bobbin 21 and the drawing device rotating part 24 can freely rotate with each other via the rotatable part 23.

Here, the bobbin 21 is wound with a welding wire and is very heavy, the drawing device rotating part 24 is light, and only the drawing device rotating part 24 rotates.

The drawer rotation unit 24 is adapted to be freely rotatable in the directions of the drawer rotation units 35 and 35a.

The wire passing portion 25 is fixed to the drawer rotating portion 24 and is rotated integrally with the drawer rotating portion 24.
The wire passing portion 25 is a tubular member that allows the wire to pass therethrough, and is used to prevent bending of the wire that passes inside and to insulate the wire. One example is a heat shrinkable tuft of polyolefin on the outside of steel that is coiled.
Use a full length cover.

The upper end of the pulling device rotating part 24 and the upper end of the wire passing part 25 are integrally attached to the rotatable part 23a, and the rotatable part 23a is the same as the rotatable part 23. It has a structure.

The wire feeding tube 26 is attached to the rotatable portion 23a together with the portion 27 for connecting the rotary type drawing device and the wire feeding tube and discharging the welding wire from the wire passing portion, whereby the drawing device is rotated. The portion 24, the wire passing portion 25, and the wire feeding tube 26 are configured to freely rotate with each other via the rotatable portion 23a.

Drawer rotating part 24 and wire passing part 2
5 rotates about a straight line connecting the respective rotation centers of the upper and lower rotatable portions 23 and 23a, and the rotatable portions 23 and 23a specifically use bearings or the like. The welding wire 22 wound around the bobbin 21 is drawn out from the wire outlet 33 on the outer circumference of the bobbin 21, passes through the wire passing portion 25, and passes through the wire feeding tube 26.

With these configurations, the wire feeding direction 34
When the welding wire 22 is fed in the direction of
Can naturally rotate on the outer circumference of the bobbin 21 in the direction of the rotation direction 35, 35a of the pulling device rotating portion, and can be sequentially pulled out.

A general apparatus and method for welding using a conventional welding wire rotary drawing apparatus will be described with reference to FIG.

The wire feeding tube 26 connects the rotary type drawing device and the wire feeding tube, and extends from the portion 27 for feeding the welding wire from the wire passing portion to the front of the wire feeding driving portion 29. .

The welding wire 22 is connected to the wire feeding tube 7
Of the welding torch 30 and the leading end of the welding torch 30 via the wire feeding drive unit 29.

The wire feeding drive unit 22 is driven to send out the exposed welding wire 22b.

The wire feeding drive unit 29 is driven at the same time as welding is performed, and at the same time, the welding power source 32 is operated.
Is a predetermined current between the welding wire 22 and the object to be welded 31,
It is installed so that voltage can be applied.

When welding is performed, the wire feeding driving unit 29 drives the welding wire 22 in the wire feeding direction 28, so that the wire passing unit 25 pulls the bobbin 21 on the outer circumference. Rotating part rotation direction 3
The welding wire 22 is sequentially pulled out by rotating in the directions of 5 and 35a. Welding wire 2 drawn in this way
2 is a portion 27 that passes through the wire passing portion 25, connects the rotary drawing device and the wire feeding tube, and discharges the welding wire from the wire passing portion, and exits from the rotary drawing device and continues to the wire feeding tube. It is led to the tip of the welding torch 30 through the wire 26 and the wire feeding drive unit 29.

A predetermined current and voltage are applied between the welding wire 22 and the object to be welded 31 by a welding power source 32, and an arc is generated between the welding wire 22 and the object to be welded 31 to weld them together. It

The above is a description of a general apparatus and method for welding using a conventional welding wire rotary drawing apparatus.

Next, a general method of manufacturing a bobbin winding welding wire in which the welding wire is twisted on the bobbin and sequentially wound from the inner layer to the outer layer will be described with reference to FIG.

FIG. 12 is a view showing a conventional bobbin in which a welding wire is twisted while being sequentially wound from an inner layer to an outer layer.

The bobbin is composed of the bobbin body 2 and the wooden flanges 14a and 14b, and is wound in order from the portion in contact with the bobbin body 2, that is, from the inner layer to the outer layer. The welding wire 40a immediately before being wound on the bobbin is wound while being in contact with the inner surface of the wooden bobbin flange 14a and having a twist 44 applied to the welding wire. At this time, the welding wire is wound while advancing in the supply direction 41 of the welding wire wound on the bobbin.

The welding wire 40a immediately before being wound on the bobbin is gradually moved in the moving direction 42a of the welding wire wound on the bobbin, and is welded immediately before being wound on the bobbin in a predetermined time. The wire 40b has been moved.

Further, the welding wire 40b immediately before being wound on the bobbin gradually moves in the moving direction 42b of the welding wire wound on the bobbin, and immediately before being wound on the bobbin at a predetermined time. Welding wire 40c
To the inner surface of the wooden bobbin flange 14b on the opposite side.

After that, the welding wire 40c immediately before being wound on the bobbin gradually moves in the direction 43a, which is the reverse direction of the welding wire wound on the bobbin, and is wound on the bobbin at a predetermined time. It moves again to the welding wire 40b immediately before it is taken.

Further, the welding wire 40b immediately before being wound on the bobbin gradually moves in the direction 43b, which is the reverse direction of the welding wire wound on the bobbin, and is wound on the bobbin at a predetermined time. It moves again to the welding wire 40a immediately before being taken, and the wooden bobbin flange 14b
Touch the inner surface of. These series of movements are repeated until a predetermined mass is wound up.

[0034]

However, in the conventional bobbin winding wire bobbin described above, when the welding wire is pulled out in the vicinity of the flange or when the welding wire is wound in the vicinity of the flange, it contacts the inner surface of the flange. , The drawing of the welding wire and the winding of the welding wire are caught in the unevenness of the inner surface of the wooden bobbin flange, which hinders the drawing of the welding wire and the winding of the welding wire. Was sometimes damaged.

The present invention provides a bobbin winding welding wire, a welding apparatus and a welding method therefor capable of solving the above conventional problems.

[0036]

In order to solve the above-mentioned problems, the bobbin-wound welding wire according to claim 1 of the present invention has a portion of the inner surface of the flange of the bobbin that is in contact with the welding wire and is subjected to a sliding treatment. . This allows the welding wire to be pulled out and the welding wire to be wound up smoothly.

The bobbin winding welding wire according to a second aspect of the invention is such that the sliding treatment according to the first aspect is provided with a resin or a metal plate so that the welding wire can be pulled out and the welding wire can be wound up. Can be done.

The bobbin wound welding wire according to a third aspect of the invention is obtained by applying the sliding treatment according to the first aspect of the invention with a resin or a paint so that the welding wire can be pulled out and the welding wire can be wound up smoothly. Can be done.

In the bobbin-wound welding wire according to claim 4, 50 kg or more of the welding wire is wound, and
By using the plastic material of the flange itself for the sliding treatment described above, the welding wire can be pulled out and the welding wire can be smoothly wound.

The bobbin winding welding wire according to claim 5 is the bobbin winding welding wire according to any one of claims 1 to 4, wherein the upper flange strength is made weaker than the lower flange strength. It is possible to provide a bobbin winding welding wire using an inexpensive bobbin capable of smoothly pulling out the welding wire and winding the welding wire.

As the bobbin winding welding wire according to a sixth aspect, the bobbin winding welding wire according to any one of the first to fifth aspects is used, and the bobbin is sequentially wound from the inner layer to the outer layer while twisting the welding wire. By doing so, by using a bobbin winding welding wire that can pull out the welding wire in a smooth manner, pull out the welding wire in a smooth manner, and in some cases using an inexpensive bobbin. Further, it is possible to provide a bobbin winding welding wire in which the wire protruding from the torch tip does not significantly rotate.

A bobbin winding welding wire according to claim 7 is 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. By providing a welding power source for supplying a welding current between the torch and the welding wire and the object to be welded to the welding wire of the object to be welded,
With this, at least the bobbin winding welding wire capable of smoothly pulling out the welding wire is used to smoothly pull out the welding wire, and in some cases, the bobbin is an inexpensive bobbin. The wire emerging from the torch tip can be used as a part of an apparatus for welding a bobbin winding welding wire which does not rotate largely.

The bobbin winding wire according to claim 8 is supplied with the wire to the object to be welded by using the welding device according to claim 7, and is welded, whereby at least the withdrawal of the welding wire is smoothed. Using a bobbin winding welding wire that can be performed, the welding wire is drawn out smoothly, and in some cases, the bobbin is an inexpensive bobbin,
The wire emerging from the torch tip can be used by welding as part of a device for welding a bobbin winding welding wire that does not rotate significantly.

In the bobbin winding welding wire according to the ninth aspect, the portion of the inner surface of the flange of the bobbin that comes into contact with the welding wire is rustproofed. This can prevent rusting of the welding wire.

In the bobbin winding welding wire according to the tenth aspect, the slip treatment according to the first aspect is provided with the resin or the metal plate, whereby rusting of the welding wire can be prevented.

The bobbin winding welding wire according to the eleventh aspect of the present invention can prevent the rusting of the welding wire by applying the sliding treatment according to the first aspect with a resin or a paint.

The bobbin-wound welding wire according to claim 12 is wound by 50 kg or more, and
If the material of the flange itself is made of plastics for the sliding treatment described above, rusting of the welding wire can be prevented.

A bobbin winding welding wire according to a thirteenth aspect is the bobbin winding welding wire according to any one of the ninth to twelfth aspects, wherein the upper flange strength is made weaker than the lower flange strength. It is possible to provide a bobbin winding welding wire that uses an inexpensive bobbin that can prevent rusting of the welding wire.

A bobbin winding welding wire according to a fourteenth aspect is the bobbin winding welding wire according to any one of the ninth to thirteenth aspects, in which the welding wire is sequentially wound from the inner layer to the outer layer while twisting the bobbin. Therefore, by using the bobbin winding welding wire that can prevent the rusting of the welding wire, the welding wire can be pulled out smoothly.
It is possible to provide a wire for bobbin winding welding in which the wire protruding from the torch tip does not rotate significantly by using an inexpensive bobbin in some cases.

A bobbin winding welding wire according to a fifteenth aspect is the bobbin winding welding wire according to any one of the ninth to fourteenth aspects, a wire feeding device for drawing out the welding wire, and the drawn out welding. By providing a torch for sending the welding wire to the welding location of the work piece and a welding power source for supplying a welding current between the welding wire and the work piece, at least the rust of the welding wire is thereby provided. Using a bobbin winding welding wire that can prevent the occurrence of the wire, the welding wire is drawn out smoothly. In some cases, the bobbin is an inexpensive bobbin and the wire from the torch tip is large. It can be used as part of a device for welding non-rotating bobbin winding wire.

The bobbin winding welding wire according to claim 16 supplies at least one wire to the object to be welded by using the welding device according to claim 15, thereby preventing at least rusting of the welding wire. Using the bobbin winding welding wire that can be done, pull out the welding wire smoothly.
In some cases, the bobbin is an inexpensive bobbin, and the wire emerging from the torch tip can be used as a part of a welding device for welding a bobbin winding wire that does not rotate significantly and can be welded.

[0052]

BEST MODE FOR CARRYING OUT THE INVENTION The first embodiment of the present invention is that a portion of the inner surface of the flange of the bobbin around which the welding wire is wound is brought into contact with the welding wire, and a sliding treatment is applied thereto.
As the sliding treatment, a resin or metal plate is provided as shown in FIG. 1 so that the surface is naturally processed to have good sliding.

Considering the strength, the thickness of the resin is 0.5 m.
m and metal are preferably 0.2 mm or more.

As the thickness increases, the flange strength increases and the durability of the plate itself increases. However, considering the mass and cost of the bobbin, it is desirable that the resin be 5 mm and the metal be 3 mm or less.

Further, as the resin, oil is applied to the surface of the welding wire, so that an oil resistant resin is preferable, and a resin having a high hardness is preferable from the viewpoint of durability. For example, A
Composed of BS.

It is desirable that the metal is one that is resistant to rust. For example, it is made of stainless steel or aluminum.

Since the welding wire during welding is applied with an electric potential, when metal is used, its outer diameter needs to be equal to or less than the outer diameter of the bobbin flange, and it is desirable that the outer diameter is smaller than 5 mm. .

Therefore, both flanges are made of wood having an outer diameter of 600 mm and a thickness of 30 mm, stainless steel (SUS304) having an outer diameter of 590 mm and a thickness of 2 mm is provided inside the bobbin to have a height of 550 mm, and the bobbin body has an outer diameter of 400 mm. I made a bobbin as a tube.

Using this, a welding wire (JIS Z
3312, wire diameter 1.2 mm, mass 250 kg) was sequentially wound from the inner layer to the outer layer while applying a twist. Usually, when the welding wire is twisted, the inner surface of the flange has a greater effect on the winding property of the welding wire and the wire running of the welding wire, compared to the case where the welding wire is not twisted. Although it is given, it could be wound up without any problem in the present embodiment.

In addition, when pulling out the welding wire, usually, when the welding wire is twisted, the welding wire is more easily pulled out than when the welding wire is not twisted. Although it has an influence, it can be brought out without problems in the present embodiment.

As another sliding treatment, a resin or paint may be applied as shown in FIG.

Naturally, it is necessary that the surface is in a coated state with good slipperiness. This can be used without changing the winding capacity of the bobbin, and the slipperiness of the bobbin can be easily reproduced by coating the bobbins in layers.

However, if it penetrates into the tree, its effect is weakened, so that it is necessary to use something that is difficult to penetrate. For example, a quick-drying transparent resin anticorrosive agent is used.

Therefore, both flanges are made of wood having an outer diameter of 600 mm and a thickness of 30 mm, and a quick-drying transparent resin rust preventive agent is applied to the inside thereof to make the bobbin height 550 mm, and the bobbin body has an outer diameter of 400 mm. I made a bobbin.

Using this, a welding wire (JIS Z
3312, wire diameter 1.2 mm, mass 250 kg) The layers were sequentially wound from the inner layer to the outer layer while being twisted. Usually, when the welding wire is twisted, the inner surface of the flange has a greater effect on the winding property of the welding wire and the wire running of the welding wire, compared to the case where the welding wire is not twisted. Although it is given, it could be wound up without any problem in this embodiment.

In addition, when pulling out the welding wire, when the welding wire is twisted, the welding wire is more easily pulled out than when the welding wire is not twisted. Although it has an influence, it can be brought out without any problem in this embodiment.

As another sliding treatment, as shown in FIG. 3, in a bobbin wound with welding wire of 50 kg or more,
The bobbin flange itself may be made of plastic whose surface is processed to have good slipperiness.

Since oil is applied to the surface of the welding wire as the resin, an oil resistant resin is desirable, and a resin having a high hardness is desirable from the viewpoint of durability. For example, ABS is used.

Therefore, a bobbin was manufactured in which both flanges were made of plastic (ABS) having an outer diameter of 600 mm and a thickness of 30 mm, the bobbin height was 550 mm, and the bobbin body was made of a plastic cylinder having an outer diameter of 400 mm. Using this, a welding wire (JIS Z3312, wire diameter 1.
2 mm, mass 250 kg) was sequentially wound from the inner layer to the outer layer while applying a twist. Usually, when the welding wire is twisted, the inner surface of the flange has a greater effect on the winding property of the welding wire and the wire running of the welding wire, compared to the case where the welding wire is not twisted. Although it is given, it could be wound up without any problem in this embodiment.

In addition, when pulling out the welding wire, when the welding wire is twisted, the inner surface of the flange is more likely to be pulled out than when the welding wire is not twisted. Although it has an influence, it can be brought out without any problem in this embodiment.

Further, as shown in FIG. 4, a bobbin was manufactured by changing the thickness of only the upper flange of the plastic bobbin to 20 mm. Using this, welding wire (J
ISZ 3312, wire diameter 1.2mm, mass 250k
g) was wound in order from the inner layer to the outer layer while applying a twist. Usually, when the welding wire is twisted, the inner surface of the flange has a greater effect on the winding property of the welding wire and the wire running of the welding wire, compared to the case where the welding wire is not twisted. Although it is given, it could be wound up without any problem in this embodiment.

In addition, when pulling out the welding wire, usually, when the welding wire is twisted, the welding wire is more easily pulled out than when the welding wire is not twisted. It affected, but I was able to pull it out without problems.

Further, using these bobbin winding welding wires, a drawing device as shown in FIG.
The welding apparatus shown in Fig. 2 was constructed. The welding wire had good drawability, and actual welding was performed, but the welding was good.

In the second embodiment of the present invention, a portion of the inner surface of the flange of the bobbin around which the welding wire is wound is in contact with the welding wire and is rustproofed. As the rust preventive treatment, a resin or metal plate or rust preventive paper is provided as shown in FIG.

Considering the strength, the thickness of the resin is 0.5 m.
m, 0.2 mm or more for metal, and 0.05 mm or more for rustproof paper.

In the case of resin and metal, the thicker the thickness, the higher the flange strength and the durability of the plate itself. However, considering the weight and cost of the bobbin, the resin is 5 mm and the metal is 3 mm or less is desirable.

Further, as the resin, since oil is applied to the surface of the welding wire, an oil resistant resin is preferable, and a resin having a high hardness is preferable from the viewpoint of durability. For example, A
BS is used.

The metal must be one that does not rust the welding wire. For example, stainless steel or aluminum is used.

Since the welding wire during welding is applied with an electric potential, when metal is used, its outer diameter needs to be equal to or smaller than the outer diameter of the bobbin flange, and it is desirable that the outer diameter is smaller than 5 mm. .

Therefore, both flanges are made of wood having an outer diameter of 600 mm and a thickness of 30 mm, stainless steel (SUS304) having an outer diameter of 590 mm and a thickness of 2 mm is provided inside the bobbin height of 550 mm, and the bobbin body has an outer diameter of 400 mm. I made a bobbin as a tube. Using this, a welding wire (JIS Z 3312, wire diameter 1.2 mm, mass 250 kg) was sequentially wound from the inner layer to the outer layer while being twisted. After storage for 3 months, the welding wire in the portion in contact with the inner surface of the flange was visually checked for rust, but no rust was found in the welding wire.

As another rust preventive treatment, resin or paint may be applied as shown in FIG. This can be used without changing the winding capacity of the bobbin, and the anti-corrosion property of the bobbin can be easily reproduced by applying the bobbins in layers.

However, if it penetrates into the tree, its effect is weakened, so that it is necessary to use a material that is difficult to penetrate. For example, a quick-drying transparent resin anticorrosive agent. Therefore, both flanges are made of wood with an outer diameter of 600 mm and a thickness of 30 mm, and a quick-drying transparent resin rust preventive agent is applied to the inside of the flange, and the bobbin height is 550 m.
and the bobbin body was made into a paper tube having an outer diameter of 400 mm. Using this, welding wire (JIS
Z 3312, wire diameter 1.2 mm, mass 250 kg)
It was wound in order from the inner layer to the outer layer while giving a twist. After storage for 3 months, the welding wire in the portion in contact with the inner surface of the flange was visually checked for rust, but no rust was found in the welding wire.

As another rustproofing treatment, as shown in FIG. 7, in a bobbin wound with welding wire of 50 kg or more,
The bobbin flange itself may be made of plastic. As the resin, since oil is applied to the surface of the welding wire, an oil-resistant resin is preferable, and a resin having a high hardness is preferable in terms of durability. For example, ABS is used.

Then, a bobbin was manufactured in which both flanges were made of plastic (ABS) having an outer diameter of 600 mm and a thickness of 30 mm, the bobbin height was 550 mm, and the bobbin body was made of a plastic cylinder having an outer diameter of 400 mm. Using this, a welding wire (JIS Z3312, wire diameter 1.
2 mm, mass 250 kg) was sequentially wound from the inner layer to the outer layer while applying a twist. After storage for 3 months, the welding wire in the portion in contact with the inner surface of the flange was visually checked for rust, but no rust was found in the welding wire.

Further, as shown in FIG. 8, a bobbin in which only the upper flange of the above plastic bobbin has a thickness of 20 mm was manufactured. Using this, welding wire (J
ISZ 3312, wire diameter 1.2mm, mass 250k
g) was wound in order from the inner layer to the outer layer while applying a twist. Three
After storage for 10 months, the presence of rust was visually observed on the welding wire in the portion in contact with the inner surface of the flange, but no rust was found on the welding wire.

Further, using these bobbin winding welding wires, a drawing device as shown in FIG.
Although the welding device shown in Fig. 3 was used, the drawability of the welding wire was good.

Furthermore, as a result of actual welding, the welding was good.

[0088]

According to the present invention, it is possible to provide a bobbin winding welding wire capable of smoothly pulling out the welding wire and winding up the welding wire. It is possible to provide a bobbin winding welding wire that uses an inexpensive bobbin that can smoothly pull out and wind up the welding wire, and can smoothly pull out the welding wire. A bobbin winding wire that can be smoothly pulled out using a bobbin winding welding wire that can be used, and in some cases an inexpensive bobbin is used, and the wire from the tip of the torch does not rotate significantly In addition, the bobbin winding welding wire capable of smoothly pulling out the welding wire can be used to smoothly pull out the welding wire. In some cases, the bobbin is an inexpensive bobbin, and the wire from the torch tip does not rotate greatly can be used as part of the device for welding bobbin winding wire, or at least for welding. The bobbin winding wire can be pulled out smoothly. The welding wire can be pulled out smoothly. In some cases, the bobbin is an inexpensive bobbin and the torch tip is The bare wire can be used by welding as part of a device for welding a bobbin winding welding wire that does not rotate significantly.

Next, according to another method of the present invention, it is possible to provide a bobbin winding welding wire which can prevent rusting of the welding wire, and also to prevent rusting of the welding wire. It is possible to provide a wire for bobbin winding welding that uses an inexpensive bobbin that can be used, and use a bobbin winding welding wire that can prevent the occurrence of rust in the welding wire. Prevent the occurrence,
Furthermore, it is possible to provide a wire for bobbin winding welding in which the wire coming out of the torch tip does not rotate significantly, and at least using a wire for bobbin winding welding capable of preventing rusting of the welding wire, Prevents rusting of the wire for use, and in some cases the bobbin is an inexpensive bobbin,
The wire from the tip of the torch can be used as a part of the device for welding the bobbin winding wire that does not rotate significantly, and at least it can prevent the rusting of the welding wire. A wire is used to prevent rusting of the welding wire, and in some cases, the bobbin is an inexpensive bobbin and the wire from the torch tip does not rotate greatly. Can be used for parts and welded.

[Brief description of drawings]

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

FIG. 2 is a sectional view of the bobbin winding welding wire according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of the bobbin winding welding wire according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view of the bobbin winding welding wire according to the first embodiment of the present invention.

FIG. 5 is a sectional view of a bobbin winding welding wire according to a second embodiment of the present invention.

FIG. 6 is a sectional view of a bobbin winding welding wire according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a bobbin winding welding wire according to a second embodiment of the present invention.

FIG. 8 is a cross-sectional view of a bobbin winding welding wire according to a second embodiment of the present invention.

FIG. 9 is a cross-sectional view of a conventional bobbin winding wire for welding.

FIG. 10 is a diagram schematically showing a conventional bobbin winding welding wire using a general rotary drawing device.

FIG. 11 is a view showing an outline of a general welding device using a rotary drawing device for a welding wire.

FIG. 12 is a view showing an outline of a conventional bobbin in which a welding wire is twisted while being sequentially wound from an inner layer to an outer layer.

[Explanation of symbols]

1a, 1b Bobbin flange 2 Bobbin body 3 Welding wires 4a, 4b Resin or metal plate 5a, 5b Applied resin or paint 6a, 6b Plastic bobbin flange 7 Plastic bobbin upper flange 8 Plastic bobbin lower flange 9a, 9b Resin or metal plate or anti-rust paper 10a, 10b Applied anti-rust resin or anti-rust paint 11a, 11b Plastic bobbin flange 12 Plastic bobbin upper flange 13 Plastic bobbin lower flange 14a, 14b Wooden bobbin flange 21 Bobbin 22 , 22a Welding wires 23, 23a Rotatable part 24 Drawing device rotating part 25 Wire passing part 26 Wire feeding tube 27 A rotary drawing device and a wire feeding tube are connected, and a welding wire is fed from the wire passing part. Welding part 28 welding Wire feeding direction 29 Wire feeding driving unit 30 Welding torch 31 Welding object 32 Welding power source 33 Wire drawing port 34 Wire feeding direction 35, 35a Drawing device rotating part rotation direction 40a, 40b, 40c Winding on bobbin Immediately before the welding wire 41, the feeding directions 42a, 42b of the welding wire wound on the bobbin, the moving directions 43a, 43b of the welding wire wound on the bobbin, and the opposite moving directions 44 of the welding wire wound on the bobbin. Twist applied to welding wire

Claims (16)

[Claims] 1. A bobbin-wound welding wire, wherein a portion of the inner surface of the flange of the bobbin around which the welding wire is wound is in contact with the welding wire, and a slip treatment is performed. 2. The bobbin winding welding wire according to claim 1, wherein the sliding treatment is to provide at least a resin or a metal plate. 3. The bobbin winding welding wire according to claim 1, wherein the sliding treatment is to apply a resin or paint. 4. The bobbin winding welding wire according to claim 1, wherein the welding wire is wound by 50 kg or more and the bobbin flange is made of plastic. 5. The bobbin winding welding wire according to any one of claims 1 to 4, wherein the upper flange strength of the bobbin installed so that the flanges are arranged one above the other is lower than the lower flange strength. 6. The bobbin winding welding wire according to any one of claims 1 to 5, wherein the bobbin is sequentially wound from the inner layer to the outer layer while twisting the welding wire. 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 power source for supplying a welding current between the torch, 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. 9. A bobbin-wound welding wire, wherein a portion of the inner surface of the flange of the bobbin around which the welding wire is wound is in contact with the welding wire, and rust-proofed. 10. The wire for bobbin winding welding according to claim 9, wherein the anticorrosion treatment is to provide at least a resin or a metal plate or anticorrosion paper. 11. The wire for bobbin winding welding according to claim 9, wherein the anticorrosion treatment is to apply anticorrosion resin or anticorrosion paint. 12. The bobbin winding welding wire according to claim 9, wherein the welding wire is wound by 50 kg or more, and the flange of the bobbin is made of plastic. 13. The wire for bobbin winding welding according to claim 9, wherein the upper flange strength of the bobbin installed so that the flanges are arranged one above the other is lower than the lower flange strength. 14. The bobbin winding welding wire according to claim 9, wherein the welding wire is sequentially wound from the inner layer to the outer layer while twisting the bobbin. 15. The bobbin winding welding wire according to any one of claims 9 to 14, 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 power source for supplying a welding current between the torch, the welding wire and the object to be welded. 16. A welding method in which a wire is supplied to a workpiece to be welded by using the welding apparatus according to claim 15.