KR100686478B1 - Pail-pack for welding wire - Google Patents

Abstract

A pail pack for welding wire which is easily recycled, and has improved strength at the same time is provided. A pail pack for welding wire comprises: a body(10) in which a welding wire(W) is housed; a bottom plate(20) which is formed on an inner lower portion of the body, and has a supporting part(21), wherein an edge of the supporting part is bent downward and connected to the body in such a manner that the edge of the supporting part is closely adhered onto an inner peripheral surface of the lower portion of the body; and a cover(50) for covering the top of the body. The body, the bottom plate and the cover are made from a paper material. The supporting part and a lower end of the body are circumferentially connected to each other by a sewn string(18) or a plurality of clamped stapler pins. The pail pack for welding wire further comprises: a strength reinforcement plate(27) formed on an upper surface of the bottom plate correspondingly to a cross-sectional shape of an inner part of the body; an inner rim member(23) closely inserted onto an inner peripheral surface of the supporting part; and a close adhesion part(51) formed by bending the edge of the cover upward such that the close adhesion part is closely inserted onto an inner peripheral surface of an upper end of the body.

Description

Fail-pack for welding wire

1A and 1B are exploded perspective views of a fail pack for a welding wire according to a first embodiment of the present invention.

1C is a cross-sectional view of a fail pack for a welding wire according to a first embodiment of the present invention.

Figure 2 is an external perspective view showing that the embossing is formed on the body of the fail-pack for welding wire applied to the present invention.

Figure 3a is an exploded perspective view of a fail pack for a welding wire according to a second embodiment of the present invention.

Figure 3b and Figure 3c is an enlarged cross-sectional view showing the main part of the fail pack for welding wire according to a second embodiment of the present invention.

Figure 4 is an exploded perspective view of a fail pack for welding wire according to a third embodiment of the present invention.

5 is an exploded perspective view of a fail pack for welding wire according to a fourth embodiment of the present invention.

Figure 6a is an exploded perspective view of a fail pack for a welding wire according to a fifth embodiment of the present invention.

Figure 6b is an enlarged cross-sectional view showing the main part of the fail pack for welding wire according to the fifth embodiment of the present invention.

Figure 7a is an exploded perspective view of a fail pack for a welding wire according to a sixth embodiment of the present invention.

Figure 7b is an enlarged cross-sectional view showing the main part of the fail pack for welding wire according to the sixth embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

W: Welding Wire 10: Body

15: inner cylinder 20: bottom plate

21: support 23: inner rim member

25: outer rim member 27: strength reinforcing plate

30 support frame 31 supporting part

50,150: cover 51,151: close contact

53: inner rim member 55: outer rim member

56: reinforcing rim member

The present invention relates to a fail pack for welding wire, and more particularly to a fail pack for welding wire excellent in recyclability.

In general, in order to smoothly supply a welding wire required for a long time welding operation, a fail-pack for a welding wire is provided. Since the welding wire is stored in the wound pack for the welding wire in a large amount, the welding wire can be smoothly supplied during the work. Therefore, the fail-pack for welding wire can improve the efficiency of the welding operation even in the environment such as long time welding work or continuous welding work, the amount of use is increasing.

However, the conventional fail-fail pack for welding wire has been made of a disposable for the convenience of supplying, which is difficult to recycle.

In addition, the body of the fail pack made of paper to be recycled, but it was difficult to withstand heavy loads due to the nature of the welding wire is laminated more than 300kg. For this reason, the steel frame is used to combine a plurality of places of the fail pack by using a bolt or the like, but when recycling, the steel frame and the paper body have to be separated, which is difficult to recycle.

In addition, the paper used in the fail pack was used by bonding to the adhesive, when incineration of the paper had a problem of polluting the air by the toxic gas generated during the combustion of the adhesive portion.

In order to solve the above problems, an object of the present invention is to provide a fail-pack for a welding wire that is easy to recycle and the strength is improved.

In order to achieve the above object, a fail pack for a welding wire according to a preferred embodiment of the present invention includes a body in which the welding wire is received; A bottom plate provided at a lower end of the inside of the body and having a support portion formed by bending an edge downward to be in close contact with an inner peripheral surface of the lower end of the body; And it comprises a cover covering the top of the body. Here, the body, the bottom plate, and the cover is made of a paper material to improve the recyclability of the fail pack as well as to have an improved strength.

On the other hand, a welding pack fail pack according to a preferred embodiment of the present invention is a cylindrical body in which the welding wire is received; A bottom plate provided at a lower end of the inner side of the body and having a support portion formed by bending an edge to be in close contact with an inner peripheral surface of the lower end of the body; And it is provided to cover the top of the body, it may be made to include a cover having a close contact portion formed by bending the upper edge so as to be in close contact with the upper inner peripheral surface of the body. Here, the body, the bottom plate, and the cover is made of a paper material.

Hereinafter, with reference to the accompanying drawings will be described in detail a fail pack for a welding wire according to an embodiment of the present invention.

1A and 1B are partial cutaway perspective views of a fail pack for a welding wire according to a first embodiment of the present invention, and FIG. 1C is a cross-sectional view of the fail pack for a welding wire according to the first embodiment of the present invention.

As shown in Figure 1a, the welding wire fail pack according to an embodiment of the present invention preferably comprises a body 10, the bottom plate 20, and the cover 50. Here, since the body 10, the bottom plate 20, and the cover 50 are all made of a paper material, the body 10, the bottom plate 20, and the cover 50 are easily recycled without the need for disposal by incineration or the like after the use of the fail pack for the welding wire.

In detail, the body 10 is formed in a cylindrical shape, and the inside of the body 10 is stacked and received in a manner in which a welding wire is wound. Inner central portion of the cylindrical body 10 is preferably provided with an inner cylinder 15, the welding wire (W) is stacked in the space between the body 10 and the inner cylinder 15 while being stacked.

The inner cylinder 15 is also preferably made of a paper material, the lower portion of the inner cylinder 15 is provided with a guide member 16, the bolt member 17 through the guide member 16 and the bottom plate 20 Is preferably fastened. The upper end of the bolt member 17 is provided with a latch (17a). A rubber band or a spring is connected to the latch 17a, and the other end of the rubber band or the spring is connected to a disk-shaped pressure plate (not shown) to be provided on an upper surface of the stacked welding wire W to lower the welding wire W. Pressurized to maintain a stable state. Of course, the fail pack according to the present invention may be used in a manner in which the inner cylinder 15, the bolt member 17 and the latch 17a are not provided.

On the other hand, the inner bottom of the body 10 is provided with a bottom plate 20, the edge of the bottom plate 20 is bent to the lower side is formed as a support portion (21). The support 21 is in close contact with the bottom inner circumferential surface of the body 10, the bottom of the support 21 and the body 10 is made to contact with the ground together. Here, the support portion 21 forms a space in which the body 10 and the bottom plate 20 are coupled, and at the same time, stably supports the lower portion of the bottom plate 20.

That is, the support portion 21 bent at the edge of the base plate 20 is structurally increased by the rigidity of the bending and tensile stress of the outer periphery of the base plate 20 to structurally increase the strength of the lower support structure of the base plate 20 I can reinforce it. Therefore, even if a heavy load of the welding wire (W) is stacked on the upper surface of the base plate 20 to maintain a solid support state.

Here, the contact surface of the support 21 and the lower end of the body 10 may be bonded and fixed by an adhesive, as shown, the lower end of the support 21 and the body 10 has a circumferential direction Therefore, it is more preferable to be coupled by the sewing string 18.

In addition, the support 21 and the lower end of the body 10 may be fixed by fastening a plurality of stapler pins fastened at predetermined angles along the circumferential direction by a stapler device.

Furthermore, the strength reinforcing plate 27 corresponding to the cross-sectional shape of the inside of the body 10 is preferably inserted into the upper surface of the bottom plate 20, thereby reinforcing the supporting strength of the bottom plate 20. It is possible to distribute the concentration of the load on a portion of the base plate 20. Here, the strength reinforcing plate 27 is also made of a sheet of paper material can improve the recyclability.

The inner rim member 23 is preferably inserted into the inner circumferential surface of the support 21, the inner rim member 23 is the inner rim member 23 due to the excessive load applied to the base plate 20. It can function as a reinforcing member to prevent the omurade.

On the other hand, as shown in Figures 1b and 1c, it is preferable that the outer rim member 25 is further provided to surround the outer peripheral surface of the bottom of the body (10). Here, the outer rim member 25 serves to reinforce the strength of the lower support structure of the bottom plate 20, and that the lower end of the fail-pack for welding wire is damaged by hitting the external object during transport. A function that prevents it can also be done incidentally. Through this, it is possible to ensure the stable usability and durability of the fail pack so that it can be recycled after being used one or more times.

In addition, the inner rim member 23 and the outer rim member 25 are preferably made of a paper material. Of course, without the inner rim member 23 and the outer rim member 25 may be used for the welding pack fail pack. In addition, when the rim members 23 and 25 are used to reinforce the strength, the string sewn through all of the lower end of the body 10, the support 21, and the rim members 23 and 25 are sewn. Or by a stapler pin.

Meanwhile, the upper end of the body 10 may be covered by the cover 50 to prevent foreign substances or moisture from entering the inside of the body 10.

As shown in the drawing, the cover 50 has a close contact portion 51 formed by bending an upper edge of the cover 50 to be in close contact with the upper inner circumferential surface of the body 10. Here, the inner rim member 53 is coupled to the inner circumferential surface of the close contact portion 51 along the circumferential direction, thereby reinforcing the strength of the close contact portion 51. To this end, the inner rim member 53 is formed in a circular ring shape, made of a paper material.

In addition, the close contact portion 51 and the inner rim member 53 may be coupled by a string 19 sewn along the circumferential direction, or may be coupled by a plurality of stapler pins fastened along the circumferential direction.

On the other hand, the outer rim member 55 is preferably coupled to the outer circumferential surface of the close contact portion 51 along the circumferential direction so that the outer rim member 55 is in close contact, the outer rim member 55 has a lower surface of the body ( 10) is loaded on the top to perform the function of the locking step.

Further, it is preferable that the outer rim member 55 is further provided with a reinforcing rim member 56 formed in a ring shape having a circular cross section along the circumferential direction, and the upper inner circumferential surface of the reinforcing rim member 56 is the outer side. The outer circumferential surface of the rim member 55 is coupled to be in close contact along the circumferential direction. In addition, the lower portion of the reinforcing rim member 56 is formed by extending a predetermined length downward so as to be in close contact with the outer peripheral surface of the upper end of the body 10 in a state in which the cover 50 covers the upper end of the body 10.

Here, the reinforcing rim member 56 may prevent foreign substances from entering the inside of the body 10 and may reinforce the strength of the edge of the cover 50.

In addition, the close contact portion 51, the inner and outer rim members (53, 55), the reinforcing rim member 56 is preferably all coupled together by a sewn strap 56 or a stapler pin.

On the other hand, at least one side of the inner peripheral surface and the outer peripheral surface of the upper end of the body 10 is preferably formed embossing of the convex shape repeatedly in the circumferential direction.

Figure 2 is an external perspective view showing a state in which the embossing is formed on the top of the body to be applied to the present invention.

As shown in Figure 2, the embossing 11 is inserted into the roller of the embossed shape engraved upper end of the body 10, the roller is rotated by pressing or pressing the upper end of the body 10 by pressing Therefore, the embossing 11 of the convex shape is repeatedly formed on the top of the body. Since the elasticity is improved in the part where the embossing 11 is formed, when the cover 50 is closed, the cover 50 while the outer rim member 55 or the reinforcing rim member 56 presses the embossing 11 part. ) And the airtightness between the rim member 56 can be further improved.

Of course, instead of forming the embossing as described above on the outer peripheral surface of the upper end of the body 10 may be formed stepped stepped into the predetermined interval inside.

On the other hand, Figure 3a is a partially cut perspective view of a fail pack for welding wire according to a second embodiment of the present invention, Figure 3b is an enlarged cross-sectional view showing a cover structure of the fail pack according to the present embodiment, Figure 3c Sectional enlarged view showing the bottom plate reinforcement structure of the fail pack according to the example.

Since the basic configuration of this embodiment is the same as that of the first embodiment described above, a description thereof will be omitted.

As shown in Figure 3a and Figure 3c, the lower part of the welding wire fail pack according to the present embodiment to substantially wrap the outer peripheral surface of the lower body and the inner peripheral surface of the inner rim member 23 in the circumferential direction A support frame 30 having a support portion 31 having a 'U' cross section is further provided.

Here, the support frame 30 is made of a steel material, the body 10, the support portion 21, and made of a paper material by being provided with the support frame 30 in the portion in contact with the bottom in the pail pack Wear of the rim member 23 by friction with the floor can be prevented. Through this, it is possible to further improve the durability of the fail pack for welding wire according to the present invention.

Furthermore, a ring-shaped hook portion 32 is preferably formed along the outer circumferential surface of the support frame 30 at predetermined angle intervals, and the hook portion 32 is transported by hooking the hook portion 32 when the pail pack is transported. It is possible to have an easy structure.

On the other hand, as shown in Figure 3b, the stepped stepped step (10a) is formed on the outer peripheral surface of the upper end of the body 10, the outer rim member 56 is loaded while the step (10a) slides inside the body (10) Can further improve the sealability. Of course, as described above, a plurality of embossing 11 may be formed along the circumferential direction on the upper outer circumferential surface of the body 10.

On the other hand, Figure 4 is a partially cut perspective view showing a weld pack fail pack according to a third embodiment of the present invention. The fail pack for welding wire according to the present embodiment is characterized in that the lower reinforcing member 41 is provided instead of the above-described rim member, and the description thereof is omitted because other configurations are the same as those of the first embodiment.

As shown in Figure 4, in the fail pack of the present embodiment, the lower portion of the body 10 and the portion combined with the support 21 is wrapped by a lower reinforcing member 41. Here, the lower reinforcing member 41 is formed to have a substantially 'c' shaped cross section to surround the lower outer peripheral surface of the body 10 and the inner peripheral surface of the support portion 21 in the circumferential direction, and can be recycled. It is preferable that the body 10 and the bottom plate 20 are made of a paper material to be used.

The lower reinforcing member 41 reinforces the strength of the combined portion of the lower portion of the support portion 21 and the body 10 and at the same time wears the lower end of the support portion 21 and the body 10 due to friction with the bottom. Can be prevented.

On the other hand, Figure 5 is a partially cut perspective view showing a fail pack for a welding wire according to a fourth embodiment of the present invention. The fail pack according to the present embodiment is characterized in that the reinforcing rim member 56 provided at the outermost portion of the cover 50 is divided at predetermined angles along the circumferential direction. Since it is the same as the first embodiment, the description is omitted.

As shown in FIG. 5, an outer rim member 55 is coupled to an outer circumferential surface of the cover 50, and a plurality of divided reinforcing rim members 56 are disposed along the circumferential direction of the outer circumferential surface of the outer rim member 55. It is divided and provided at intervals of a predetermined angle. Therefore, the split type reinforcing rim member 56 reduces the consumption of raw materials (paper) used while achieving the purpose of strength reinforcement, compared to the case where the outer rim member 55 is provided to completely surround the circumferential direction of the outer rim member 55. Can be.

On the other hand, Figure 6a is a partially cut perspective view showing a welding wire fail pack according to a fifth embodiment of the present invention, Figure 6b is an enlarged cross-sectional view showing the main part of the fail pack according to the present embodiment.

As shown in Figure 6a, the outer rim member 61 is coupled to be in close contact with the outer peripheral surface of the close contact portion 51 of the cover 50 according to the present embodiment in the circumferential direction is made by bending in two stages, the outer rim The member 61 may be configured to perform the function of the aforementioned reinforcing rim member. Of course, it is preferable that the inner rim member 53 for strength reinforcement is provided on the inner circumferential surface of the close contact portion 51.

As shown in FIG. 6B, the outer rim member 61 is vertically bent twice to form a coupling part 62, a first bending part 63, and a second bending part 64. Here, the coupling portion 62 is coupled by a string 19 or a stapler pin sewn on the outer circumferential surface of the contact portion 51. The first bending part 63 is formed to be bent almost vertically to the outside of the coupling part 62, and the second bending part 64 is formed to be bent downward from the first bending part 63. .

Through this, the lower surface of the first bending portion 63 is loaded and restrained on the upper end of the body 10, the inner circumferential surface of the second bending portion 64 is in close contact with the outer peripheral surface of the upper end of the body (10). That is, as shown, the upper end of the body 10 is inserted between the lower outer peripheral surface of the contact portion 51 and the inner peripheral surface of the second bending portion 64. Here, as described above in the first embodiment, the upper circumferential surface of the body 10 is repeatedly embossed or stepped in a convex shape, the outer circumferential surface of the cover 50 covered on the upper end of the body 10 The second bending portion 64 of the outer rim member provided in the may be configured to be inserted along the embossing or step.

As such, the outer rim member 61 may reinforce the strength of the edge of the cover 50 and at the same time, stably prevent the inflow of foreign matter into the body 10. In addition, the combined state of the body 10 and the cover 50 can be more stably maintained.

Here, the inner rim member 53 and the outer rim member 61 may be fixed by a string 19 or a stapler pin sewn along the circumferential direction of the close contact portion 51 and the engaging portion 62.

On the other hand, Figure 7a is an exploded perspective view of a fail pack for a welding wire according to a sixth embodiment of the present invention, Figure 7b is an enlarged cross-sectional view showing the main part of the fail pack according to the embodiment.

As shown in Figure 7a, the contact portion 151 formed on the edge of the cover 150 of the fail pack according to the present embodiment is made by bending in two stages.

As shown in FIG. 7B, the close contact part 151 includes a base part 151a, a loading part 151b, and an extension part 151c. Here, the base portion 151a is bent upward from the edge of the cover 150 to be in close contact with the upper inner circumferential surface of the body 10. In addition, the loading part 151b is formed by bending outward from the base part 151a so that its lower surface is loaded on the upper end of the body 10, and the extension part 151c is formed from the loading part 151b. It is formed by bending upward.

Therefore, the lower surface of the loading unit 151b is loaded and restrained on the upper end of the body 10. In addition, it is preferable that the inner rim member 153 is further provided to be in close contact with the inner circumferential direction of the extension portion 151c in order to strengthen the strength of the edge of the cover 150.

The reinforcing rim member 160 is coupled to the outer circumferential surface of the extension part 151c. Here, the upper portion of the reinforcing rim member 160 is coupled to be in close contact with the outer circumferential surface of the extension portion 151c in the circumferential direction, and the lower portion is provided to be in close contact with the outer circumferential surface of the upper end of the body 10. Accordingly, the reinforcing rim member 160 may reinforce the edge strength of the cover 50 and prevent foreign substances from flowing into the body 10.

Here, the inner rim member 153 and the reinforcing rim member 160 may be fixed by a string 19 or a stapler pin sewn along the extension portion 151c.

In addition, as described above in the first embodiment, the upper circumferential surface of the body 10 is repeatedly embossed or stepped in a convex shape, and the outer circumferential surface of the cover 150 covered on the upper end of the body 10. Reinforcing rim member 160 provided in the may be configured to be inserted along the embossing or step.

As described above, the fail pack for welding wire according to the present invention has the following effects.

First, since the body, the bottom plate, the cover and various rim members are all made of paper, the fail pack for welding wire according to the present invention can be remarkably improved.

Second, various rim members are provided on the inner and outer sides of the bottom plate and the cover, and the strength reinforcement plate is provided on the upper surface of the bottom plate to significantly increase the strength, thereby stably stably stacking 300 kg or more of welding wire therein. Can be transported and stored.

Third, the support portion bent from the edge of the bottom plate supports the bottom plate to prevent contact with the ground and wear, and also reinforces the strength to withstand bending stress and shear force due to the load applied to the top surface of the bottom plate, Only a fail pack made of bays can be made practically applicable.

Fourth, since various rim members are fixed to the inner and outer sides of the bottom plate or cover by sewing strings or stapler pins, manufacturability and productivity can be improved.

Fifth, when the support frame of the steel material is provided in the lower portion of the fail pack made of a paper material it can prevent the wear of the bottom by friction with the ground to improve the life of the fail pack long.

Sixth, by forming an embossed or stepped on the outer circumferential surface of the upper end of the body and a rim member or the like surrounding the outer circumferential surface of the upper body on the outer circumferential surface of the cover, thereby improving the bondability of the body and the cover and foreign matter into the body This can be prevented from entering.

On the other hand, each embodiment of the present invention as described above is configured to help the understanding of the present invention is not limited only to the above-described embodiment, the present invention various modifications within the scope without departing from the technical spirit of the above-described embodiment It includes.

Claims (24)

A body in which the welding wire is received; A bottom plate provided at a lower end of the inside of the body and having a support portion formed by bending an edge downward to be in close contact with an inner peripheral surface of the lower end of the body; And Fail pack for welding wires comprising a cover for covering the top of the body. The method of claim 1, The body, the bottom plate, and the cover is a fail pack for welding wire, characterized in that made of a paper material. The method of claim 1, Fail pack for welding wires, characterized in that the support and the lower end of the body are coupled by a string sewn along the circumferential direction. The method of claim 1, The support portion and the lower end of the body is a fail-pack for welding wire, characterized in that coupled by a plurality of fastened stapler pins along the circumferential direction. The method of claim 1, Fail pack for welding wires, characterized in that the upper surface of the bottom plate is provided with a strength reinforcing plate corresponding to the cross-sectional shape inside the body. The method of claim 1, Fail pack for welding wires, characterized in that further comprises an inner rim member inserted in close contact with the inner peripheral surface of the support. The method of claim 6, Welding wire, characterized in that further comprising a support frame made of a steel material having a base portion having a substantially 'U' shaped cross section to surround the outer peripheral surface of the lower body and the inner peripheral surface of the inner rim member along the circumferential direction Fail Pack. The method of claim 1, Fail pack for welding wires, characterized in that further comprises an outer rim member provided to surround the lower outer peripheral surface of the body. The method of claim 1, And a lower reinforcing member having a substantially 'c'-shaped cross section so as to surround the lower outer circumferential surface of the body and the inner circumferential surface of the support portion in a circumferential direction. The method of claim 1, Fail pack for welding wires, characterized in that the contact portion is bent to the upper edge of the cover to be inserted in close contact with the upper inner peripheral surface of the body. A cylindrical body in which the welding wire is received; A bottom plate provided at a lower end of the inner side of the body and having a support portion formed by bending an edge to be in close contact with an inner peripheral surface of the lower end of the body; And It is provided so as to cover the upper end of the body, the weld pack fail pack including a cover having a close contact portion formed by bending the upper edge so as to be in close contact with the upper inner peripheral surface of the body. The method of claim 11, The body, the bottom plate, and the cover is a fail pack for welding wire, characterized in that made of a paper material. The method of claim 11, Fail pack for welding wires further comprises an inner rim member coupled to the inner circumferential surface of the close contact portion in close contact with the circumferential direction. The method of claim 13, The contact part and the inner rim member is a fail-pack for welding wire, characterized in that coupled by the sewing string along the circumferential direction. The method of claim 13, The close contact portion and the inner rim member is a fail-pack for welding wire, characterized in that coupled by a plurality of fastened stapler pins along the circumferential direction. The method of claim 11, Coupled to the outer circumferential surface of the close contact portion in close contact with the circumferential direction, a fail-pack for welding wire, characterized in that the lower surface is further comprises an outer rim member loaded on the top of the body. The method of claim 16, The upper inner circumferential surface is coupled to the outer circumferential surface of the outer rim member in close contact with the circumferential direction, and the lower portion of the welding wire fail pack further comprises a reinforcing rim member provided to be in close contact with the outer circumferential surface of the body. The method of claim 16, The reinforcing rim member is a welding pack fail pack, characterized in that provided with a predetermined angle intervals along the circumferential direction. The method of claim 11, Further comprising an outer rim member coupled to the outer peripheral surface of the close contact portion in close contact with the circumferential direction, The outer rim member includes a coupling part, a first bending part bent outward from the coupling part, and a second bending part bent downward from the first bending part. The method of claim 19, The lower surface of the first bending portion is loaded on the upper end of the body, the welding wire fail pack, characterized in that the upper end of the body is inserted between the outer peripheral surface of the second bending portion and the contact portion. The method of claim 11, The close contact portion A base portion which is bent upward from the edge of the cover and whose outer circumference is in close contact with the upper inner circumference of the body; A loading part which is bent outwardly from the base part and the lower surface is loaded on the upper end of the body; Fail pack for welding wires, characterized in that it comprises an extension bent upward from the loading portion. The method of claim 21, Fail pack for welding wires further comprises an inner rim member coupled to the inner circumferential surface of the extension portion in close contact with the circumferential direction. The method of claim 21, The upper part is coupled to the outer circumferential surface in close contact with the circumferential direction, the lower part of the welding wire pail pack further comprises a reinforcing rim member provided to be in close contact with the outer circumferential surface of the body. The method according to any one of claims 17, 18, 19, 23, Fail pack for welding wires, characterized in that the embossing of the convex shape is formed repeatedly in the circumferential direction on at least one side of the upper inner peripheral surface and the outer peripheral surface of the body.

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