JP4484073B2 - Welding wire storage container and welding wire in container - Google Patents

Description

  The present invention relates to a welding wire storage container and a container-containing welding wire for storing a coil of a welding wire, and more particularly to a welding wire storage container and a container-containing welding wire that can be applied to a welding wire having high rigidity such as a solid wire.

  As a container for storing a welding wire such as a solid wire and a flux-cored wire, a bottomed cylindrical pail container is generally used (for example, see Patent Documents 1 and 2). FIG. 8A is a perspective view schematically showing a conventional welding wire in a container, and FIG. 8B is a cross-sectional view thereof. FIG. 9 is a perspective view showing a pressing plate of a conventional welding wire storage container. As shown in FIGS. 8A and 8B, in the conventional welding wire with a container, the welding wire 100a has a circular trajectory in a container in which a bottom plate 105 forming a bottom portion is held inside the outer cylinder 101. It is wound and stored while moving and displacing the central axis along. In the conventional welding wire storage container, the inner cylinder 106 having a smaller diameter than the outer cylinder 101 may be provided coaxially with the outer cylinder 101.

  Usually, the welding wire with a container is unwound in a state of being accommodated in the container. For this reason, the welding wire 100a may be entangled or entangled during unwinding. Therefore, in the conventional welding wire with a container, as shown in FIG. 9, an annular pressing plate 112 is placed on the welding wire coil 100, and the welding wire 100 a is inserted from the gap between the outer cylinder 101 and the pressing plate 112. Some blade bodies 112a having an L-shaped cross section projecting outside the outer peripheral portion of the pressing plate 112 are provided at equal intervals so as not to jump out. The blade body 112a is made of a foamed urethane sponge and bonded to the surface of the pressing plate 112 with an adhesive. In addition, since the holding | maintenance board 112 can move to an up-down direction, even if the height of the welding wire coil 100 changes by unwinding the welding wire 100a, it is always mounted on the welding wire coil 100. Yes. Further, a window 112b made of a hole having a diameter of 30 to 60 mm is provided at a position between the blade bodies 112a of the holding plate 112 so that the remaining amount of the welding wire in use can be visually confirmed.

  On the other hand, in order to prevent entanglement during unwinding, a pressing plate in which a plurality of elastic inward pieces are provided on a strip-like vertical wall portion has also been proposed (see Patent Document 3). The pressing plate is rounded into an annular shape, and is placed on the welding wire coil such that the vertical wall portion is in contact with the inner surface of the outer cylinder and the elastic inward piece is in contact with the upper surface of the welding wire. Then, the welding wire is drawn upward while being in contact with the edge of the elastic inward piece of the pressing plate.

  However, in the conventional welding wire storage container, as shown in FIG. 8 (b), the bottom plate 105 is fixed by caulking the lower end portion of the outer cylinder 101. A small caulking portion is formed. This caulking portion is intended to facilitate positioning when the bottom plate 105 is inserted into the outer cylinder 101, and assists by applying a guide during curl processing for fixing the bottom plate 105. When unraveling, the presser plate 102 is held by the caulking part, and the welding wire coil 100 below the caulking part cannot be pressed, and the wire between the caulking part and the bottom plate 105 jumps up, becomes entangled and loosened. There is a problem of injury.

  Thus, a method of raising the bottom of the container by laminating a plate or the like on the bottom plate 105 has been studied. FIG. 10 is a cross-sectional view showing a welding wire storage container with a raised bottom. In this welding wire storage container, a disk 109 having an outer diameter that can be inserted into the caulking portion and having a thickness equivalent to the height of the caulking portion is joined to the bottom plate 105 with an adhesive or the like. As a result, the bottom of the container is raised and the upper surface of the lowermost welding wire is above the caulking portion, so that the lowermost welding wire can be pressed by the pressing plate 102.

  In addition, a holding plate is provided which has a plurality of strip-shaped blade members attached to an annular flat plate whose inner diameter is larger than the outer diameter of the inner cylinder and whose outer diameter is smaller than the minimum inner diameter of the outer cylinder so as to protrude inward and outward. A welding wire storage container has also been studied (see Patent Document 4). FIG. 11 is a plan view showing a pressing plate of the welding wire storage container. The holding plate 120 presses the welding wire coil downward by the annular flat plate 121 and prevents the welding wire on the outer cylinder side and the inner cylinder side from jumping out by the blade member 122. Since this presser plate 120 can enter the caulking portion whose outer diameter is smaller than the inner diameter of the caulking portion, it is possible to press down to the lowermost welding wire.

Japanese Examined Patent Publication No.59-8474 (Page 1-2, Figure 1-4) Japanese Examined Patent Publication No. 3-34424 (Fig. 2-3, Fig. 1) JP-A-10-218493 (Figs. 3-4 and 1-3) Japanese Patent Laid-Open No. 2-147666 (page 3-5, FIG. 2)

  However, the conventional techniques described above have the following problems. First, the conventional pressing jig shown in FIG. 9B includes a pressing plate 112 made of a ring-shaped molding plate made of a single material of olefin resin such as ABS, PP, PS, and a plurality of urethane sponges. Since it is composed of the blade body 112a, there are the following problems. That is, when the blade body 112a made of foamed urethane sponge is weakened in contact with the inner surface of the outer casing 101 of the pail container due to a change with time, and the welding wire just before being pulled over the blade body 112a, the welding wire becomes a blade body. As a result, the wire is not easily returned to the original state, that is, below the presser plate 112, and the wire feeding is stopped. In addition, a break is likely to occur from the vicinity of the joint between the presser plate 112 and the blade body 112a, and when the welding wire enters the break, a situation where the wire feeding is stopped similarly occurs.

  In addition, the conventional welding wire storage container with the raised bottom shown in FIG. 10 can be pressed down to the lowest layer of the welding wire coil 10 by the pressing plate 102, but the disk 109 and the inner surface of the outer cylinder 101 There is a problem that a gap is formed between the wires, and a wire is caught in the gap to stop feeding. When using a plurality of container welding wires in succession, it is impossible to move to the next container unless all the welding wires stored in the container are pulled out smoothly. If trouble occurs in the vicinity of the bottom where the remaining amount of metal is reduced, it is not possible to continuously use a plurality of container-containing welding wires. Further, it is possible to eliminate the gap between the disk 109 and the inner surface of the outer cylinder 1 by increasing the thickness of the disk 109 and setting the bottom of the container above the caulking portion. An increase in the amount is not preferable because the amount of wires that can be accommodated in the container decreases, the workability during use decreases, and the manufacturing cost increases.

  Furthermore, the conventional welding wire storage container provided with the pressing plate 120 shown in FIG. 11 has only a few portions between the pressing plate 120 of the welding wire coil and the outer cylinder being pressed by the blade member 122. There is a possibility that the welding wire on the outer cylinder side jumps out. In addition, since the blade member 122 protruding inward is in contact with the outer surface of the inner cylinder and the blade member 122 protruding outward is in contact with the inner surface of the outer cylinder, the presser plate 120 easily moves obliquely. There is a problem that entanglement and entanglement of the wire are likely to occur.

  The present invention has been made in view of such problems, and provides a welding wire storage container and a container-containing welding wire that can smoothly unwind the welding wire to the lowest layer without causing entanglement and entanglement. With the goal.

A welding wire storage container according to the present invention is a welding wire storage container that stores a coil of a welding wire, and an outer cylinder, a bottom plate that is held inside the outer cylinder by caulking the outer cylinder, and forms a bottom portion; A pressing jig placed on the welding wire coil, and the pressing jig rises upward from the outer edge of the entire circumference of the flat plate portion on the welding wire. The weir portion has a shape integrally formed, the flat plate portion contacts the upper surface of the welding wire coil, and the weir portion has a stepped shape such that the lower portion has a smaller diameter than the upper portion. The lower part of the weir part has an outer diameter smaller than the inner diameter of the caulking part of the outer cylinder, and the upper part of the weir part has an outer diameter smaller than the inner diameter of the outer cylinder and larger than the inner diameter of the caulking part. Yes, and outwardly at the top of the dam Wherein the plurality of projections and out is provided.

  In the present invention, since the holding jig placed on the welding wire coil has a weir portion along the inner surface of the outer cylinder, when unwinding the welding wire coil, the wire It is possible to prevent the coil winding state from being disturbed by protruding from between the inner surface of the outer cylinder. Moreover, since the lower part of the weir part of this pressing jig is smaller than the inner diameter of the caulking part for fixing the bottom plate in the outer cylinder, the lower part of the weir part can be fitted into the caulking part. Therefore, even if the remaining amount of the welding wire coil decreases, the holding jig can reliably hold the upper surface of the welding wire coil. Thereby, even if it does not raise a bottom etc. like the conventional welding wire storage container, it can unwind smoothly, without producing a tangle and a tangle up to the welding wire of the lowest layer.

In the present invention, it is preferable that three or more protrusions provided so as to protrude outwardly from the upper portion of the dam portion are provided at equal intervals in the circumferential direction of the dam portion. Furthermore, it is preferable that the envelope circle at the tips of the plurality of protrusions is larger than the inner surface of the outer cylinder in plan view. Furthermore, it is preferable that at least the upper surface of the projection protrudes downward and inclined downward.

  The welding wire storage container according to the present invention preferably has an inner cylinder that is arranged coaxially with the outer cylinder and into which the welding wire coil is fitted. And it is preferable that the said holding jig is integrally molded by the olefin resin.

  Furthermore, it is preferable that a plurality of weights arranged at equal positions around the center of the pressing jig is provided on the pressing jig. In this case, the weight is, for example, These are steel plates each having a thickness of 3 to 25 mm, a width of 9 to 50 mm, a length of 50 to 200 mm, and a total mass of 200 to 800 g. Alternatively, a ring-shaped steel weight or a steel weight in which windings having a diameter of 0.8 to 5.5 mm are bundled in a coil shape is provided on the holding jig, and the ring of the steel weight is provided. The outer diameter or the outer diameter of the coil is preferably 20 to 100 mm smaller than the inner diameter of the outer cylinder. In this case, the mass of the steel weight is 200 to 800 g.

  Furthermore, the flat plate portion of the holding jig is provided with one or a plurality of holes for visually recognizing the lower welding wire at equal positions around the center of the holding jig. preferable. For example, the hole has a width of 2 to 20 mm and a length of 10 to 50 mm.

  The pressing jig has a plate thickness of 0.5 to 5 mm, the outer diameter of the upper portion of the weir portion is 0.5 to 5 mm smaller than the inner diameter of the outer cylinder, and the inner diameter of the flat plate portion is the inner cylinder It is preferable that the height of the upper portion of the weir portion is 40 to 60 mm.

  Moreover, the welding wire with a container according to the present invention is characterized in that a welding wire coil is accommodated in the above-described welding wire storage container.

  According to the present invention, since the weir portion that rises from the outer periphery of the flat plate portion forms a ring shape and substantially contacts the inner surface of the outer cylinder, the gap between the pressing jig and the outer cylinder The welding wire is prevented from jumping out. And this dam part is integrally formed with the flat plate part so as to rise from the peripheral edge of the entire circumference of the flat plate part, and has rigidity due to a shape factor, unlike the case where the blade body is provided locally. Even if the welding wire tries to jump up from the gap between the inner surface of the outer cylinder and the holding jig, the weir can reliably prevent this jumping, and the weir will prevent the inner surface of the outer cylinder from changing over time. The pressing stress is not reduced, and the welding wire can be reliably prevented from popping out. Even if the welding wire jumps upward from the upper edge of the weir part, the weir part is provided at the outer edge of the flat plate part over the entire circumference of the flat plate part. It is possible to return to the original state, that is, below the holding jig. Furthermore, since the dam portion is formed over the entire circumference of the flat plate portion, unlike the conventional case in which the blades are locally provided, there is no possibility that a breakage occurs due to the violent welding wire.

  Further, as in claim 8, by forming the holding jig in which the weir portion and the flat plate portion are integrally formed by integrally molding with an olefin resin, a blade body made of urethane foam sponge as in the prior art. The deterioration of the pressing force on the inner surface of the outer cylinder due to the change with time can be further prevented as compared with the case where is provided.

  Further, in the present invention, the lower portion has a smaller diameter than the upper portion, such as a stepped shape, and the lower portion may enter the space surrounded by the caulking portion of the outer cylinder. it can. For this reason, even if the remaining amount of wire in the container decreases, the holding jig can reliably hold the welding wire coil, and the lowermost welding wire can be smoothly unwound without causing entanglement and entanglement. Can do.

  Hereinafter, a welding wire container according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view showing a welding wire storage container of the present embodiment. In the welding wire storage container of the present embodiment, the lower end portion of the cylindrical outer cylinder 1 is caulked, and the disc-shaped bottom plate 5 is fixed, whereby the bottom plate 5 is held at the lower end portion of the outer cylinder 1. A sealed container is constructed. Therefore, the inner diameter of the inner surface of the outer cylinder 1 is small in the caulking portion 1a at the lower end. The bottom plate 5 and the outer cylinder 1 are fixed in a mutually reinforcing manner by a metal reinforcing band (not shown) that wraps the caulked portion 1 a of the outer cylinder 1 and the bottom surface of the bottom plate 5. Generally, since a welding wire of 200 to 500 kg is stored in a welding wire storage container, a safe and robust structure is required during transportation and hanging transfer. For this reason, from the viewpoint of weight reduction and electrical insulation, the outer cylinder 1 in the welding wire storage container of the present embodiment is formed of thick paper or the like.

  In the welding wire storage container of the present embodiment, a cylindrical inner cylinder 6 having a diameter smaller than that of the outer cylinder 1 is disposed coaxially with the outer cylinder 1 inside the outer cylinder 1. The part is fixed on the bottom plate 5. A welding wire coil 10 is placed on the bottom plate 5 between the outer cylinder 1 and the inner cylinder 6. The welding wire coil 10 is formed by filling the welding wire 10a with a twist of about 360 ° per turn in a loop shape in the space between the inner cylinder 6 and the outer cylinder 1 and dropping it. Stored.

  In the welding wire storage container of the present embodiment, the holding jig 2 is placed on the welding wire coil 10. FIG. 2 is a perspective view showing the holding jig 2, and FIG. 3 is a cross-sectional view of the holding jig 2. The holding jig 2 includes a ring-shaped flat plate portion 3 and a cylindrical weir portion 4 that rises from the outer edge of the flat plate portion 3. The dam portion 4 has a lower portion 4a having a diameter smaller than that of the upper portion 4b, and a step 4c is formed between the lower portion 4a and the upper portion 4b. In addition, the lower part 4a and the upper part 4b of the dam part 4 are not necessarily perpendicular | vertical with respect to the flat plate part 3, and the upper part has a large diameter and is inclined toward the outer side.

  Then, a steel ring-shaped weight 7 a is placed on the flat plate portion 3 so as to be coaxial with the center of the flat plate portion 3 as the center. Further, two slit-like holes 8 are formed in the flat plate portion 3 at equal intervals with the longitudinal direction thereof being directed in the radial direction of the ring-shaped flat plate portion 3.

  Next, a preferable material and a preferable shape and size of the holding jig 2 of the welding wire storage container configured as described above will be described. In the holding jig 2, the flat plate portion 3 and the weir portion 4 (lower portion 4a, upper portion 4b and step portion 4c) are integrally formed of an olefin resin, and the plate thickness (a) is 0.5. It has a thin shape of 5 to 5 mm. The outer diameter (d) of the pressing jig 2 is 0.5 to 5.0 mm smaller than the inner diameter of the outer cylinder 1, and the inner diameter (b) of the pressing jig 2 is 20 to 20 mm than the outer diameter of the inner cylinder 6. 30 mm larger. Further, the outer diameter (c) of the flat plate portion 3 is smaller than the inner diameter of the caulking portion 1a of the outer cylinder 1 (the minimum inner diameter of the outer cylinder 1), and the lower portion 4a rising from the outer edge of the flat plate portion 3 is outside. It has a size that fits inside the caulking portion 1 a of the tube 1. That is, since the portion 4a below the step portion 4c is fitted into the caulking portion 1a, the height (f) of the step portion 4c from the flat plate portion 3 is determined by the height of the caulking portion 1a from the bottom plate 5. . Moreover, the height (e) of the dam part 4, ie, the height from the flat plate part 3 of the upper end of the dam part 4, is 40 to 60 mm. This is because it is preferable that the welding wire has a height of 40 mm or more in order to prevent the welding wire from jumping from the gap between the weir portion 4 and the inner surface of the outer cylinder 1, and when the height exceeds 60 mm, When the welding wire coil is accommodated by covering the upper end of the container, the holding jig 2 is too large, and the mass of the welding wire that can be accommodated is reduced. Therefore, it is preferable that the height of the weir portion 4 of the holding jig 2 is 40 to 60 mm. Examples of the olefin resins include ABS (Acrylonitrile-Butadiene-Styrene) resin, PP (Polypropylene) resin, PS (Poly-Styrene) resin, and the like. The pressing jig 2 can be obtained by molding with the above.

  The weight 7a is formed by bending a steel rod having a diameter of 5.5 to 20 mm into a ring shape, and prevents the pressing jig 2 from being lifted due to the ramp of the welding wire. Further, the hole 8 has a slit shape or a rectangular shape having a width of 2 to 20 mm and a length of 10 to 50 mm, and the remaining amount of the welding wire 10a below the holding jig 2 is reduced by the hole 8. It can be visually recognized. In FIG. 2, the hole 8 has a slit shape or a rectangular shape, but the shape of the hole 8 is not limited to this.

  In addition, the said material and shape dimension are examples, and this invention is not limited to this. In the embodiment shown in FIG. 2, two holes 8 are formed. However, the present invention is not limited to this, and one or a plurality of holes 8 can be provided. Although the number of the holes 8 can be five or more, the lower welding wire can be sufficiently confirmed even if the number of the holes 8 is four or less, and the strength of the flat plate portion 3 of the holding jig 2 increases as the number of the holes 8 increases. And the lower welding wire 10a easily rusts through the hole 8. In any case, it is preferable to arrange the holes 8 at equal intervals.

  Next, the operation of the welding wire storage container configured as described above will be described. A welding wire 10 a such as a solid wire or a flux-cored wire is dropped onto the bottom plate 5 between the outer cylinder 1 and the inner cylinder 6 to accommodate the welding wire coil 10. The welding wire coil 10 has a mass of 200 to 500 kg, for example. Then, as shown in FIG. 1, the holding jig 2 is placed on the coil 10, and the welding wire 10 a is drawn upward from the gap between the holding jig 2 and the inner cylinder 6.

  Then, by feeding the welding wire 10a to the drawn torch, the height of the coil 10 is gradually lowered, and accordingly, the holding jig 2 on the coil 10 is also lowered. In this case, since the upper portion 4b of the weir portion 4 of the holding jig 2 has only a gap of 0.5 to 5.0 mm between the outer cylinder 1 and the upper part 4b, the upper jig 4 slides substantially downward on the inner surface of the outer cylinder 1. . Accordingly, it is possible to prevent the welding wire 10a from jumping above the holding jig 2 from the gap between the holding jig 2 and the outer cylinder 1 due to the ramp of the welding wire 10a when the welding wire 10a is pulled out. it can. In this case, since the flat plate portion 3 and the weir portion 4 rising from the outer periphery of the flat plate portion 3 form a ring shape and substantially contact the inner surface of the outer cylinder, welding is performed from the gap between the holding jig and the outer cylinder. The wire is prevented from jumping out.

  And since this dam part 4 is integrally formed with the flat plate part 3 so that it may stand up from the outer edge of the perimeter of the flat plate part 3, compared with the case of the conventional blade body, rigidity is high, Therefore Even if the welding wire tries to jump up from the gap between the inner surface and the holding jig 2, the weir part 4 can reliably prevent the jumping up. Further, the stress that the weir portion 4 presses the inner surface of the outer cylinder 1 does not decrease due to the change over time, and the welding wire can be reliably prevented from popping out. Further, even if the welding wire jumps upward from the upper edge of the dam portion 4, the dam portion 4 is provided at the outer edge of the flat plate portion 3 over the entire circumference of the flat plate portion 3, so that it jumped out. The wire 10a can be easily returned to the original state, that is, below the holding jig 2. Furthermore, since the weir portion 4 is formed over the entire circumference of the flat plate portion 3, unlike the case where the blade body is provided locally as in the prior art, there is no occurrence of a break due to the violent welding wire. .

  Further, since the holding jig 2 is one in which the weir portion 4 and the flat plate portion 3 are integrally formed of an olefin-based resin, as compared with the case where a blade body made of foamed urethane sponge is provided, Changes in characteristics such as material or rigidity are less likely to occur with time, and further deterioration of the pressing force on the inner surface of the outer cylinder can be prevented.

  Furthermore, even if the remaining amount of the welding wire is reduced and the height of the welding wire coil 10 is lower than the caulking portion 1a of the outer cylinder 1, the lower portion 4a of the pressing jig 2 is surrounded by the caulking portion 1a. Since it enters, the pressing jig 2 can still press the upper surface of the welding wire coil 10 in the caulking portion 1a. For this reason, even if the remaining amount of the wire in the container is reduced, the holding jig 2 can reliably hold the welding wire coil 10 and smoothly wrap around the lowermost welding wire without causing entanglement and entanglement. Can be solved.

  Depending on the usage status of the welding wire, the welding may be interrupted and repair of the welding object may occur. For this reason, in order to confirm the welding wire remaining amount of a storage container so that the welding of a good separation can be performed, the window for visually checking the welding wire remaining amount is provided in the holding jig. In the case of the conventional holding jig, this visual recognition window was extremely large, so if the welding wire storage container is subject to changes in the outside air temperature and is likely to cause condensation, the holding jig The welding wire exposed through the viewing window may rust. However, in the present invention, since this visual recognition window is a hole 8 having a width of 5 to 10 mm, the lower welding wire is not easily affected by condensation, and therefore, discoloration and rusting of the welding wire are suppressed. can do.

  Further, since the blade body 112a (FIG. 9B) of the conventional pressing plate is made of urethane foam sponge, the welding wire that directly contacts the blade body 112a is likely to be discolored or rusted. In addition, since the urethane foam sponge constituting the blade body 112a contains chlorine, if it is attempted to incinerate when the pressing plate is discarded, it becomes a source of dioxins and is difficult to discard.

  However, in the present invention, since the weir portion 4 is integrally formed of the same olefin resin material as that of the flat plate portion 3, discoloration and rust do not occur even when contacting the welding wire. Moreover, since the holding jig 2 is formed of an olefin resin and the weight 7a is a ring-shaped steel rod, scrap processing is easy, and dioxins are generated even if the holding jig 2 is incinerated. And can be easily disposed of.

  FIG. 4 is a perspective view showing a holding jig 2a for a welding wire storage container according to another embodiment of the present invention, and FIG. 5 is a schematic perspective view showing the welding wire storage container. The pressing jig 2a is provided with four steel plate weights 7b on the flat plate portion 3 thereof. The weight 7b is, for example, a steel plate having a thickness of 3 to 25 mm, a width of 9 to 50 mm, and a length of 50 to 200 mm, and is joined at equal intervals on the flat plate portion 3 by a double-sided adhesive tape. . The number of weights 7b is not limited to four, and a plurality of weights 7b can be provided. Further, the weight 7b may be formed with a protrusion on the surface of the flat plate portion 3 and bonded to the protrusion. However, in order to apply a load evenly to the welding wire coil, it is preferable to make the intervals of the weights 7b uniform. Moreover, although this embodiment does not have an inner cylinder as shown in FIG. 5, the said steel plate weight 7b can be used also when it has an inner cylinder.

  As described above, the weight is not limited to the ring shape, and the same effect can be obtained when a plurality of pieces are arranged at equal intervals. Further, the inner cylinder is not necessarily provided. However, in this case, it is preferable that a pull-out hole is provided in the flat plate portion 3 of the holding jig 2 and the welding wire 10a is drawn through the pull-out hole.

  Further, when transporting and storing the container-containing welding wire wound and stored by the above-described method, a lid (not shown) is put on the upper end portion of the outer cylinder 1. In that case, it is preferable to arrange a spacer (not shown) made of paper or the like between the pressing jig 2 and the lid. Thereby, it is possible to prevent the welding wire coil from being unwound due to vibration during transportation and causing entanglement and entanglement.

  Furthermore, in the welding wire storage container of the present embodiment, since most of the upper surface of the welding wire coil 10 is covered by the holding jig 2, moisture does not easily enter the welding wire coil 10, and the welding wire is prevented from being rusted. The effect is excellent.

  FIG. 6A is a plan view showing a holding jig 2b of a welding wire storage container according to still another embodiment of the present invention upside down in order to clearly show the protrusion, and FIG. It is sectional drawing. In each figure, the part shown with a dashed-dotted line is the figure which expands and shows the protrusion 20. FIG. As in FIG. 3, the holding jig 2 b is formed by integrally forming a ring-shaped flat plate portion 3 and a weir portion 4. The dam portion 4 is formed so as to be inclined so that the lower portion 4a and the upper portion 4b are provided with a step portion 4c therebetween and spread toward the opening side. In other words, the holding jig 2b has a shape in which the upper part spreads out (the figure is upside down), and the upper end edge contacts or slides on the inner surface of the outer cylinder. And the protrusion 20 is formed in the upper end part of the upper part 4b of this dam part 4 in the position of 3 equal intervals of the circumferential direction of the dam part 4, respectively. That is, the protrusion 20 is provided at a position that forms a central angle of 120 ° around the center of the holding jig 2b. The envelope circle connecting the tips of the protrusions 20 has a diameter larger than that of the upper end edge of the weir part 4 of the pressing jig 2b. Therefore, the protrusions 20 protrude outward from the weir part 4 of the pressing jig 2b.

  Next, the operation of the pressing jig of the present embodiment configured as described above will be described. The jumping behavior of the wire is likely to occur when a gap exceeding the diameter of the wire exists between the inner surface of the outer cylinder and the pressing jig over a length equal to or more than a half circumference of the pressing jig. On the other hand, the diameter of the inner surface of the outer cylinder may vary in the range of 0 to +5 mm from the design value. Then, if the outer edge of the holding jig 2b is a perfect circle and the diameter is the same as the design value of the inner diameter of the outer cylinder, when the outer cylinder inner surface diameter swings at the maximum value, the outer cylinder and the holding jig It is easy for the wire to pass upward from the gap between the tools. On the other hand, in the present invention, since the protrusion 20 protruding outward is provided on the upper part of the weir part 4 (upper part 4b), from between the weir part 4 and the outer cylinder 1 (FIG. 1), It is reliably prevented that the welding wire jumps out (bounces up) above the holding jig 2b. And since this protrusion 20 is provided in three or more places at equal intervals in the circumferential direction of the dam part 4, since the passage of a wire can be prevented uniformly in the circumferential direction, the jumping of a wire can be prevented more reliably. At this time, when the envelope circle at the tip of the plurality of protrusions is larger than the inner surface of the outer cylinder in plan view, the manufacturing dimension accuracy of the outer cylinder is too low and larger than the design value, Even when a relatively large gap is generated between the holding jig dam 4 and the envelope circle at the tip of the projection 20 is larger than the design value of the outer cylinder 1, the tip of the projection 20 is surely attached to the inner surface of the outer cylinder. Can be reliably prevented from passing through the wire. Further, when the size of the outer cylinder is as designed, the protrusion 20 of the weir part 4 of the pushing jig 2b is pushed against the inner surface of the outer cylinder 1, and the weir part 4 is bent slightly inward. This can be absorbed. In this case, the upper edge of the dam portion 4 itself is not larger than the inner surface of the outer cylinder, but the envelope circle of the plurality of protrusions 20 is only larger than the inner surface of the outer cylinder. It only receives the reaction force from the inner surface of the cylinder and slides on the inner surface of the outer cylinder, and a large frictional force that prevents the pressing jig 2b from descending does not act.

  Furthermore, as shown in FIG. 7, when the lower surface of the protrusion 20 is inclined downward (toward the outer cylinder 1), when the wire is fed, that is, at the time of unwinding, the wire When an attempt is made to move upward between 4 and the outer cylinder 1, the wire is easily guided to the base of the protrusion 20 by being locked to the lower surface of the protrusion 20 that protrudes downward toward the outside. For this reason, it can prevent more reliably that a wire passes upwards between the pressing jig 20 and the outer cylinder 1. This effect is not necessarily limited to the case where the lower surface of the protrusion is inclined downward, but can be obtained in the same manner even when the protrusion faces horizontally or slightly upward. That is, if the angle β between the lower surface of the protrusion 20 and the inner surface of the outer cylinder is 75 degrees or more, it is possible to prevent the wire from protruding. If the wire passes upward, the upper surface of the protrusion 20 is inclined downward toward the inner surface of the outer cylinder 1, so that the wire is pulled toward the inner cylinder when the wire is fed, If a downward force is applied to a portion on the holding jig, this portion of the wire is guided to the upper surface inclined downward toward the outside of the projection 20 to push the projection 20 and to push the holding jig 2b. You can go back down. The angle α formed by the upper surface of the protrusion 20 and the inner surface of the outer cylinder is preferably 60 degrees or less. In this embodiment, the number of the protrusions 20 is three, but the number of protrusions is not particularly limited as long as the number of protrusions is two or more.

  The diameter of the envelope circle of the protrusion 20 of the holding jig 2b is designed to be equal to or larger than the inner diameter of the wire storage container. When the holding jig is installed in the storage container, It is necessary to reduce the diameter of the envelope circle of the protrusion 20 due to the deformation of the weir part 4. At the same time, in a state where the holding jig 2b is installed in the storage container, the protrusion 20 can maintain the pressing force due to the elastic deformation of the weir part 4 against the inner surface of the outer cylinder of the storage container, and can prevent jumping. The pressing force by the protrusions 20 is preferably 1000 g or less in a state of being installed inside the storage container. When the weight exceeds 1000 g, when the weight of the holding jig 2b is light, the protrusion 20 is caught on the inner surface of the outer cylinder 1 of the storage container, and the holding jig 2b follows the wire height as the wire is fed. It is not possible to obtain an effective wire pressing force.

It is sectional drawing which shows the welding wire storage container of embodiment of this invention. It is a perspective view which shows the pressing jig 2 of this embodiment. It is sectional drawing which similarly shows the holding jig 2 of this embodiment. It is a perspective view which shows the pressing jig 2a of the welding wire storage container of other embodiment of this invention. It is a typical perspective view which shows the welding wire storage container of this embodiment. It is the top view (a) and partial side view (b) which show the holding jig 2b of the welding wire storage container of further another embodiment of this invention. It is a schematic diagram which shows the modification. (A) is a perspective view which shows the conventional welding wire with a container typically, (b) is the sectional drawing. It is a perspective view which shows the holding plate of the conventional welding wire storage container. It is sectional drawing which shows a part of conventional welding wire storage container by which the bottom was raised. It is a top view which shows the pressing plate of the welding wire storage container of patent document 5.

Explanation of symbols

1, 101; outer cylinder 2, 2a, 2b; holding jig 12, 102, 112, 120; holding plate 121; annular flat plate 3; flat plate portion 4; dam portion 4a; lower portion 4b; upper portion 4c; ; Bottom plate 6, 106; inner cylinder 7a, 7b; weight 8; hole 10, 100; welding wire coil 10a, 100a; welding wire 103; ring 108; string 109; disc 107; clamp 102, 112; body

Claims (11)

In a welding wire storage container for storing a coil of a welding wire, an outer cylinder, a bottom plate which is held inside the outer cylinder by caulking the outer cylinder and forms a bottom portion, and placed on the welding wire coil A holding jig, and the holding jig has a shape in which a ring-shaped flat plate portion on the welding wire and a weir portion rising upward from the outer edge of the flat plate portion are integrally formed. The flat plate portion is in contact with the upper surface of the welding wire coil, the weir portion has a stepped shape such that the lower portion has a smaller diameter than the upper portion, and the lower portion of the weir portion is the outer portion has an outside diameter smaller than the inside diameter of the caulking portion of the cylindrical, upper part of the dam portion have a larger outer diameter than the inner diameter of the caulked portion smaller than the diameter of the inner surface of the outer cylinder, the outer upper portion of the dam A plurality of protrusions protruding in the direction Welding wire container, characterized in that. The welding wire storage container according to claim 1 , wherein three or more projections are provided at equal intervals in the circumferential direction of the weir portion. 3. The welding wire storage container according to claim 2 , wherein an envelope circle at a tip of the plurality of protrusions is larger than an inner surface of the outer cylinder in a plan view. The welding wire storage container according to any one of claims 1 to 3 , wherein at least the upper surface of the protrusion is inclined downward toward the outer side. The welding wire storage container according to any one of claims 1 to 4 , further comprising an inner cylinder disposed coaxially with the outer cylinder. The welding wire storage container according to any one of claims 1 to 5 , wherein the pressing jig is integrally formed of an olefin resin. On the pressing jig, a plurality of weights arranged at equal positions centered on the center of the pressing jig are provided, and each of the weights has a thickness of 3 to 25 mm and a width. There 9 to 50 mm, a steel sheet is 50 to 200mm in length, the welding wire container according to any one of claims 1 to 6, characterized in that a mass of 200 to 800g in total. A ring-shaped steel weight or a steel weight obtained by bundling a coil with a diameter of 0.8 to 5.5 mm in a coil shape is provided on the holding jig, and the ring outer diameter of the steel weight is provided. The welding wire storage container according to any one of claims 1 to 7 , wherein the outer diameter of the coil is 20 to 100 mm smaller than the inner diameter of the outer cylinder, and the total mass is 200 to 800 g. In the flat plate portion of the pressing jig, one or a plurality of holes for visually recognizing the lower welding wire are provided at equal positions around the center of the pressing jig. The welding wire storage container according to any one of claims 1 to 8 , wherein the length is 2 to 20 mm and the length is 10 to 50 mm. The pressing jig has a plate thickness of 0.5 to 5 mm, the outer diameter of the upper portion of the weir portion is 0.5 to 5 mm smaller than the inner diameter of the outer cylinder, and the inner diameter of the flat plate portion is the inner cylinder The welding wire storage container according to claim 5 , wherein the outer diameter of the welding wire is 20 to 30 mm larger and the height of the upper portion of the weir portion is 40 to 60 mm. A welding wire containing a container, wherein a welding wire coil is stored in the welding wire storage container according to any one of claims 1 to 10 .

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