JP2012161817A - Charged object of welding wire - Google Patents

Abstract

A welding wire which can be smoothly fed to a welded portion without being entangled or entangled regardless of the amount of wire loaded and stored when the welding wire is taken out from the pail pack at a high speed. Provide a load of.
A welding wire loaded in which a welding wire 4 is twisted and stored in a loop shape as if a cylindrical cavity 3 is formed in the central portion of a pail pack 1 is formed above the storage welding wire. A flat plate-shaped holding plate 6 is arranged, and an annular convex portion 7 having an outer diameter smaller than the cylindrical hollow diameter of the stacked welding wire is provided on the lower surface of the end of the wire take-out hole at the center of the holding plate.
[Selection] Figure 1

Description

  The present invention relates to a welding wire load in which twisted welding wires are loaded and stored in a pail pack in a loop shape.

  A pail pack is generally used as a large-capacity welding wire storage container having a capacity of 200 to 350 kg. However, the stored welding wire is twisted within a range of elasticity, for example, a twist of 360 ° per one loop of the wire is given. Loaded and stored in a pail pack. The welding wire has a force to return the twist of the wire in the pail pack, and when the wire is released, the wire tends to jump in the axial direction of the pail pack, so that entanglement and entanglement occurs when the wire is taken out. For this reason, as disclosed in, for example, Japanese Patent Publication No. 59-8474 (Patent Document 1), an annular pressing plate is placed on the wire loop in the pail pack to press the wire from above. A method has been proposed.

  FIG. 4 is a cross-sectional view showing a state in which the welding wire loaded and stored in the pail pack described in Patent Document 1 is taken out. A welding wire 4 twisted in the pail pack 1 is loaded and stored in a loop shape. Reference numeral 2 denotes a loop body loaded with a welding wire, and 3 denotes a cylindrical cavity in the loop body 2 loaded with a welding wire. An annular retainer plate 13 is placed on the upper part of the loop body 2 on which the welding wire 4 is loaded, and prevents the welding wire from jumping up and getting tangled or tangled. As a result, the welding wire 4 is taken out upward from the cylindrical cavity 3 side above the loop body 2 while the take-out position rotates along the inner circumferential edge 14 of the annular retainer plate 13.

  FIG. 5 is a plan view showing a part of FIG. As described above, since the take-out position of the welding wire 4 is rotated along the inner circumferential end 14 of the annular holding plate 13, the welding wire 4 is always in contact with the next loop 10 almost in parallel. While being moved in the direction of the inner circumferential edge 14 of the annular retainer plate 13, it is taken out. Therefore, when the welding wire 4 is taken out at a high speed and the annular holding plate 13 is lifted instantaneously, the next loop 10 or the next loop 11 is pulled out to the cylindrical cavity 3 and twisted by the cylindrical cavity 3. Bouncing and tangling may occur in an attempt to resolve the problem.

  As a solution to this problem, Japanese Patent Laid-Open No. 11-192552 (Patent Document 2) discloses a method for reducing the diameter of the extraction hole of the annular retainer plate 13 as shown in FIG. A technique has been proposed in which the contact point with the inner wall of the pack 1 and the take-out hole are used as fulcrums to form an arcuate shape in the columnar cavity 3 toward the bottom of the pail pack 1. This prevents the lower loop from being pulled out to the cylindrical cavity 3 by taking out the next loop 10 or the lower loop 11 while holding it down.

  However, when the welding wire is used up to the bottom of the pail pack, a space is formed between the annular retainer plate 13 and the upper portion of the loop body 2, and a plurality of loops are drawn out to the cylindrical cavity 3 to cause tangles. There is a case. That is, FIG. 7 is a cross-sectional view showing a state where the welding wire is taken out when the welding wire 4 is taken out to the vicinity of the bottom of the pail pack. 5 is a caulking portion of the bottom plate of the pail pack, and the wall surface is partially raised inside the pail pack. When the loop body 2 becomes lower than the bottom caulking portion 5, the outer edge portion of the annular pressing plate 13 comes into contact with the bottom caulking portion 5 and stops, and the upper portion of the loop body 2 cannot be pressed by the annular pressing plate 13. As a result, the next loop 10 or the next loop 11 is pulled out by the welding wire 4 to be taken out and pulled out to the cylindrical cavity 3 so that the welding wire jumps and tries to untwist in the cylindrical cavity 3, so that the tangle is entangled. There is a problem that occurs.

  As a solution to this problem, Japanese Patent Application Laid-Open No. 2007-927 (Patent Document 3) discloses that a presser plate has a dam shape that matches the shape of the caulking portion of the pail pack bottom, and the tangle when the welding wire is taken out at the pail pack bottom Techniques for preventing this have been proposed. However, the loop holding near the wire take-out hole is held by the surface of the holding plate, so if the holding plate is lifted instantaneously, a space is created between the holding plate and the loop body, and multiple loops are pulled out. There was a problem that entanglement and tangle occurred.

Japanese Patent Publication No.59-8474 JP-A-11-192552 JP 2007-927 A

  The present invention provides a welding wire that can be smoothly fed to a welded portion without any entanglement or entanglement regardless of the amount of wire loaded and stored when the welding wire is taken out from the pail pack at a high speed. An object is to provide a charge of wire.

  The gist of the present invention is that the welding wire is loaded and stored in a loop shape by twisting the welding wire as if a cylindrical cavity is formed in the center of the pail pack. An annular pressing plate is arranged, and an annular convex portion having an outer diameter smaller than the cylindrical cavity diameter of the loaded and stored welding wire is provided on the lower surface of the end of the wire take-out hole at the center of the pressing plate. It is in the load of the welding wire to.

  According to the welding wire load of the present invention, when the welding wire is taken out from the pail pack at a high speed, the tangle and the entanglement until all the welding wires in the pail pack are used up regardless of the amount of wire stored. Therefore, it is possible to provide a load of welding wire that can be smoothly fed to the welded portion.

It is a figure which shows the taking-out state of the welding wire loaded and accommodated in the pail pack of this invention. It is the top view which showed a part of FIG. FIG. 2 is a partial cross-sectional view of FIG. 1. It is a figure which shows the taking-out state of the welding wire loaded and accommodated in the conventional pail pack. It is the top view which showed a part of FIG. FIG. 6 is a plan view showing a state in which a wire loaded and stored in a conventional pail pack different from those in FIGS. 4 and 5 is taken out. It is sectional drawing which showed the taking-out state in the bottom part vicinity in the pail pack of FIG.

  FIG. 1 shows a state in which the welding wire stored in the pail pack according to the present invention is taken out. FIG. 2 is a plan view showing a part of FIG. A twisted wire 4 is loaded and stored in a loop shape inside the pail pack 1. A flat plate holding plate 6 is placed on the loop body 2, and an annular convex portion 7 is provided on the lower surface of the end of the wire take-out hole 8 at the center of the flat plate holding plate 6. The string member 9 is for preventing the welding wire 4 from jumping out from the gap between the inner wall of the pail pack 1 and the flat plate-shaped holding plate 6. A similar effect can be obtained by providing the flat plate annular retainer plate 6 with an elastic member that contacts the inner wall of the pail pack 1 instead of the string member 9.

  The welding wire 4 is taken out directly by a take-out device or a take-out guide member (not shown) provided at the upper part of the wire take-out hole 8. Since the welding wire 4 has a predetermined rigidity, the welding wire 4 is bowed in the direction of the pail pack bottom surface 12 of the cylindrical cavity 3 with the annular protrusion 7 provided on the flat plate-shaped annular retainer plate 6 as a fulcrum by the take-out tension. The force which pushes back the wire toward the inner wall of the pail pack acts.

  Therefore, a force acts on the welding wire 4 in the direction of the loop body 2 at the annular convex portion 7, and the next loop to be pulled out and the lower layer loop are taken out while being pressed toward the inner wall of the pail pack. As a result, even if the flat circular annular pressing plate 6 is lifted slightly, the lower loop is not pulled out to the cylindrical cavity 3 because the annular convex portion 7 is pressed. Therefore, the welding wire 4 that is pressed and taken out by the annular convex portion 7 provided on the flat plate-shaped annular pressing plate 6 with a point is not tangled.

  FIG. 3 is a cross-sectional view showing a state in which the welding wire is taken out from the lower layer of the pail pack. The annular convex portion 7 is provided integrally with the flat plate-shaped annular pressing plate 6, and the resistance during wire removal can be reduced by making the sectional shape of the convex portion a smooth curve. In the lower layer of the pail pack, the outer edge of the flat plate retainer plate 6 comes into contact with the bottom caulking portion 5 and stops. However, since the space between the pail pack bottom surface 12 and the annular convex portion 7 is narrowed, the welding wire 4 is taken out. Therefore, the space for this purpose is blocked by the annular convex portion 7, and the next loop 10 and the lower loop 11 are not pulled out.

  The outer diameter of the annular protrusion 7 needs to be smaller than the cylindrical cavity 3 of the welding wire loaded and stored. When the outer diameter of the annular convex portion 7 becomes larger than that of the cylindrical cavity 3, the upper portion of the loaded loop body 2 and the outer end portion of the annular convex portion 7 come into contact with each other, and the flat plate annular pressing plate 6 is lifted from the upper portion of the loop body 2. It becomes impossible to hold down the entire stored welding wire, and entanglement and entanglement tend to occur. Further, the cross-sectional shape of the annular convex portion 7 is preferably a semi-ellipse, but is not limited to this as long as it has a curve with less resistance when the wire slides. For example, a cross-sectional shape obtained by cutting an oval mold in the middle of the parallel portion may be used.

  In addition, it is preferable that the height of the cyclic | annular convex part 7 is 5-20 mm. If the height of the annular convex portion 7 is less than 5 mm, when the flat plate-shaped annular pressing plate 6 stops at the bottom plate caulking portion 5, the interval between the annular convex portion 7 and the pail pack bottom surface 12 is wide, so that multiple turns on the bottom surface Can't block the wires. Therefore, the welding wire 4 to be taken out is moved and taken out while being displaced substantially in parallel with the next loop 10 and the lower layer loop 11, and the next loop 10 is drawn out to the cylindrical cavity 3 and the wire is entangled. On the other hand, if the height of the annular convex portion 7 exceeds 20 mm, the angle of the wire drawn out from the wire take-out hole 8 is too large, the wire wrinkles and the drawing resistance increase, and the wire feedability becomes poor.

  Furthermore, it is preferable that the width | variety of the annular convex part 7 is 30-50 mm. If the width of the annular convex portion 7 is less than 30 mm, the annular convex portion 7 has an acute angle and a strong wrinkle is generated. When the width of the annular convex portion 7 exceeds 50 mm, the annular convex portion 7 comes into contact with the loaded welding wire 4, and the entire pressing plate floats from the upper portion of the loop body 2, so that the welding wire 4 loaded and accommodated is removed. It cannot be suppressed, and entanglement and entanglement are likely to occur.

  In a pail pack with an inner diameter of 500 mm, a solid wire for welding with a wire diameter of 1.2 mm was loaded and stored in a loop while twisting 360 ° per round. The height of the annular convex portion provided on the 1100 g flat annular holding plate having various weights was changed and placed on the loop body, and the number of entanglements when the welding wire was taken out was examined. . In the test method, all the welding wires in the pail pack were continuously taken out from the pail pack at a speed of 15 m / min. The results are summarized in Table 1.

  In Table 1, No. 1 to 3 are examples of the present invention. 4 and 5 are comparative examples. No. which is an example of the present invention. As for 1-3, an annular convex part is provided in a holding | suppressing plate, and the outer diameter of an annular convex part is smaller than a cylindrical cavity. Therefore, the welding wire to be taken out has an arcuate shape toward the bottom of the pail pack of the cylindrical cavity with the annular convex part as a fulcrum, and it was taken out while pressing the next loop and the lower layer loop. Was not pulled out into the cylindrical cavity. In addition, when the welding wire was taken out from the lower part of the pail pack, the loop of a plurality of turns was not drawn out into the cylindrical cavity, and no entanglement or entanglement occurred.

  Comparative Example No. 4, the outer diameter of the annular convex portion is larger than the circular cavity, so that the outer end of the annular convex portion is in contact with the upper portion of the loop body, and the flat annular retainer plate can press the entire wire above the loop body. Disappeared and tangled once.

  Comparative Example No. 5. Since no annular protrusion is provided, the wire to be taken out moves while being displaced substantially parallel to the next loop and the lower layer loop, and when the presser plate is lifted slightly, the next loop is formed into a cylindrical cavity. The entanglement occurred once.

DESCRIPTION OF SYMBOLS 1 Pale pack 2 Loop body 3 Cylindrical cavity 4 Welding wire 5 Clamping part of bottom plate 6 Flat plate annular pressing plate 7 Annular convex part 8 Wire feed hole 9 String member 10 Next loop 11 Next loop 12 Pail pack bottom face 13 Annular pressure plate (prior art)
14 Inner circumferential edge

Claims (1)

In the load of welding wire that is twisted and stored in a loop shape by twisting the welding wire as if a cylindrical cavity was formed in the center of the pail pack, a flat plate-shaped holding plate was placed on top of the stored welding wire. An annular protrusion having an outer diameter smaller than the cylindrical cavity diameter of the stacked welding wire is provided on the lower surface of the end of the wire take-out hole at the center of the holding plate. Loading.

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