Kink prevention jig and label pack

Abstract

To provide a kink prevention jig and a pail pack which enable the occurrence kinks to be prevented when wire is pulled out.SOLUTION: A kink prevention jig 10 is used for a pail pack 30 comprising: a housing 31 which has a bottom plate portion 33 and a tubular outer tube portion 35 and houses laminated wire 50; and a wire extraction hole 37 thereabove. The kink prevention jig comprises: outwardly extended section 14 provided above the laminated wire 50 and extending in a radial direction of the outer tube portion 35; and a wire abutment section 16 which is formed above the outwardly extended section 14 and abuts on a welding wire W and thereby preventing kinks when the welding wire W is pulled out from the extraction hole 37.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a kink prevention jig and a pallet pack.

Background Art

[0002] In recent years, the automation and robotization of welding have advanced. For this reason, there is a great demand for longer welding wires such as solid wires for MAG welding and flux-cored wires for MAG welding, and the use of pallet packs in which welding wires are stacked and stored has been increasing. However, in a pallet pack, when continuously welding, there is a problem that kinks occur due to the twisting of the welding wire near the outlet of the pallet pack, and the drawing out of the welding wire stops. The occurrence of this kink causes a decrease in the operation rate in robot welding etc., and thus it is required to prevent kinks.

[0003] Here, Patent Document 1 discloses a pallet pack in which an inner cylinder and an outer cylinder are coaxially arranged on the bottom plate of the pallet pack, a welding wire stacked in a coil shape is accommodated between the inner cylinder and the outer cylinder, and a pressing member is placed on the coiled welding wire. In this pallet pack, the pressing member is intended to prevent the entanglement and twisting of the welding wire when the welding wire is drawn out.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, even when using the pallet pack described in Patent Document 1, kinks may still occur, and further measures for preventing kinks are required.

[0006] The present invention has been made in view of the above-described problems, and an object thereof is to provide a kink prevention jig and a pallet pack capable of preventing the occurrence of kinks when pulling out a wire.

Means for Solving the Problems

[0007] The above object of the present invention is achieved by the following configuration (1) related to the kink prevention jig.

[0008] (1) A housing having a bottom plate portion and a cylindrical outer cylinder portion for accommodating a laminated wire, and A kink prevention jig used for a pallet pack provided with a wire outlet above, wherein An outward extension portion provided above the laminated wire and extending in the radial direction of the outer cylinder portion, and A wire contact portion formed above the outward extension portion and coming into contact with the wire when the wire is pulled out from the outlet to prevent the occurrence of kinks, A kink prevention jig characterized by comprising. According to this configuration, when the kink prevention jig is used for a pallet pack, the occurrence of kinks can be prevented when pulling out the wire.

[0009] Moreover, a preferred embodiment of the present invention related to the kink prevention jig relates to the following (2) to (4).

[0010] (2) When the height of the housing is H1 and the height of the outlet is H2, The top of the wire contact portion is at a position higher than H1 + 1 / 2 × (H2 - H1), and the kink prevention jig according to the above (1) is characterized in that. According to this configuration, the space through which the wire passes is narrowed, and the wire is further guided to the vicinity of the outlet, so that the occurrence of kinks can be more reliably prevented.

[0011] (3) The pallet pack has an inner cylinder provided inside the coiled laminated wire in the housing, The kink prevention jig according to the above (1) or (2), characterized by having a connection portion that extends downward from the outer extension portion and engages with the inner cylinder. According to this configuration, the inner cylinder in the bellows pack and the kink prevention jig can be connected, and the kink prevention jig can be disposed on the inner cylinder.

[0012] (4) The kink prevention jig according to any one of the above (1) to (3), characterized in that the wire contact portion is formed in a substantially conical shape. According to this configuration, the wire can be smoothly guided toward the wire outlet.

[0013] Further, the above object of the present invention is achieved by the following configuration (5) related to the bellows pack.

[0014] (5) A bellows pack, characterized by comprising the kink prevention jig according to any one of the above (1) to (4). According to this configuration, the occurrence of kinks can be prevented when the wire is pulled out from the bellows pack.

[0015] Further, a preferred embodiment of the present invention related to the bellows pack relates to the following (6) and (7).

[0016] (6) Comprising a pressing plate for pressing the laminated wire downward, The bellows pack according to the above (5), characterized in that the laminated wire is pulled out by an internal drawing method. According to this configuration, in the bellows pack of the internal drawing method, the occurrence of kinks can be prevented.

[0017] (7) Having a lid provided so as to cover an opening in the bottom plate portion of the housing, The bellows pack according to the above (5) or (6), characterized in that the lid has a substantially conical shape whose outer diameter gradually decreases upward. According to this configuration, since the wire passes through the space between the substantially conical kink prevention jig, the space through which the wire passes becomes narrow, and the occurrence of kinks can be effectively prevented.

Effects of the Invention

[0018] According to the present invention, it is possible to provide a kink prevention jig and a peel pack that can prevent the occurrence of kinks when pulling out a wire.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2A

Figure 2B

Figure 3

Figure 4

Figure 5

Figure 6A

Figure 6B

Figure 6C

Figure 6D

Figure 6E

Modes for Carrying Out the Invention

[0020] <First Embodiment> Hereinafter, the kink prevention jig according to the embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the kink prevention jig 10 of the present embodiment includes a cylindrical portion 11 that engages with the inner cylinder 34 of the pallet pack 30 shown in FIG. 3 described later, and a conical portion 12 that is coaxially and integrally formed on the upper portion of the cylindrical portion 11. Here, the cylindrical portion 11 is a connecting portion that engages with the inner cylinder 34 and connects the inner cylinder 34 and the kink prevention jig 10.

[0021] The diameter D2 of the bottom surface 13 of the conical portion 12 is larger than the diameter D1 of the cylindrical portion 11. The bottom surface 13 of the conical portion 12 has a flange-shaped outward extending portion 14 that extends in the outer diameter direction from the upper outer periphery of the cylindrical portion 11. The radial length L, the diameter D1, the diameter D2, and the height of the conical portion 12 of the outward extending portion 14 are appropriately set according to the size of the pallet pack 30 to be used. In the present embodiment, the outward extending portion 14 extends horizontally from the cylindrical portion 11 toward the outer peripheral edge 15, but it may extend obliquely downward or obliquely upward from the cylindrical portion 11 toward the outer peripheral edge 15.

[0022] The kink prevention jig 10 prevents the occurrence of kinks in the welding wire W by the outer peripheral edge 15 of the bottom surface 13 of the conical portion 12 and the conical surface 16 of the conical portion 12, which is the wire contact portion, coming into contact with the drawn welding wire W. The shape of the generatrix constituting the conical surface 16 may be any of a straight line, a concave shape, a convex shape, and a curve, but a straight line or a convex shape is preferable.

[0023] The cylindrical portion 11 and the conical portion 12 of the kink prevention jig 10 may be integrally formed solid or hollow, for example, by resin or metal. The outer peripheral edge 15 of the bottom surface 13 of the conical portion 12 and a plurality of generatrices constituting the conical surface 16 of the conical portion 12 may be a framework member formed by combining with a wire or the like. Note that the cylindrical portion 11 only needs to be a connecting portion that engages with the inner cylinder 34 (see FIGS. 3 and 4), and may have a shape such as a quadrangular prism or a triangular prism. Further, the inner cylinder 34 and the kink prevention jig 10 may be integrated.

[0024] As shown in FIG. 2A, in a kink prevention jig 10A according to one modification example, the conical portion 12 of the kink prevention jig 10 shown in FIG. 1 has a flat surface 21 obtained by cutting the top of the conical portion 12 parallel to the bottom surface 13, and the conical portion 12 has a frustum of a cone 22 shape. Since other parts have the same shape as the kink prevention jig 10 of the above embodiment, detailed description thereof will be omitted. Note that, similar to the height of the conical portion 12, the height of the frustum of a cone 22 is appropriately set according to the size of the bellows pack 30 to be used. For example, like the kink prevention jig 10B according to another modification example shown in FIG. 2B, the height of the frustum of a cone 22 may be higher than that shown in FIG. 2A.

[0025] Subsequently, as shown in FIG. 3, the bellows pack 30 includes a housing 31 having an outer cylinder portion 35 and a bottom plate portion 33, and a lid body 32. The lid body 32 is provided above the housing 31 so as to cover an opening 39 facing the bottom plate portion 33. The housing 31 has an inner cylinder 34 and an outer cylinder portion 35 coaxially arranged on the bottom plate portion 33, and a laminated wire 50 formed by winding a welding wire W in a coil shape is accommodated between the inner cylinder 34 and the outer cylinder portion 35. Note that, in the present embodiment, the inner cylinder 34 and the outer cylinder portion 35 are coaxially arranged on the bottom plate portion 33, but they do not necessarily have to be coaxially arranged. Further, the shape of the lid body 32 is not limited to the shape of the present embodiment, and the slope of the lid body may be concave or convex. Also, the shapes of the lid body 32 and the kink prevention jig 10 can be selected so that they can be used as bellows packs with each other.

[0026] The lid body 32 is formed in a substantially frustum trapezoid shape whose outer diameter gradually decreases upward, and a base 38 having a lead-out port 37 through which the wire W is drawn out is fixed to the top 36 thereof. The housing 31 forms an accommodation space S1 for accommodating the laminated wire 50 therein. Further, as will be described later, the lid body 32 forms a passage space S3 between it and the kink prevention jig 10. In the present embodiment, "upward" means a direction vertically upward along the axial direction of the outer cylinder portion 35 in the bellows pack 30, and "downward" described later means a direction vertically downward along the axial direction of the outer cylinder portion 35 in the bellows pack 30.

[0027] Also, a wire pressing plate 40 is placed on the laminated wire 50, and the laminated wire 50 is pressed downward by the self-weight of the wire pressing plate 40. The outer diameter of the wire pressing plate 40 is slightly smaller than the inner diameter of the outer cylinder portion 35, and the wire pressing plate 40 can move axially within the outer cylinder portion 35.

[0028] On the other hand, the inner diameter of the wire pressing plate 40 is larger than the outer diameter of the inner cylinder 34, and a gap C1 for pulling out the welding wire W is provided between the inner peripheral edge 40a of the wire pressing plate 40 and the outer peripheral surface of the inner cylinder 34. By setting the size of the gap C1 to be larger than the diameter of the welding wire W, it is possible to pull out the welding wire W from between the wire pressing plate 40 and the inner cylinder 34. That is, the peel pack 30 shown in FIG. 3 is a so-called "inner extraction type" peel pack.

[0029] As shown in FIG. 3, the kink prevention jig 10 is attached to the peel pack 30 by engaging the cylindrical portion 11 with the inner cylinder 34 of the peel pack 30. That is, the conical portion 12 is disposed within the substantially frustum-shaped internal space formed by the lid body 32 above the inner cylinder 34. Thereby, the substantially frustum-shaped internal space formed by the lid body 32 is narrowed by the conical portion 12. That is, the space through which the welding wire W drawn from the laminated wire 50 can pass is a substantially annular passage space S3, which is the portion obtained by removing the volume S2 of the conical portion 12 from the substantially frustum-shaped internal space formed inside the lid body 32. Note that the diameter D2 of the bottom surface 13 of the conical portion 12 is smaller than the inner diameter of the outer cylinder portion 35, and a predetermined gap C2, which is set to be larger than the diameter of the welding wire W, is provided between the outer peripheral edge 15 of the conical portion 12 and the inner peripheral surface of the outer cylinder portion 35 of the peel pack 30.

[0030] Further, when the height of the housing 31 is H1 and the height from the bottom plate portion 33 of the housing 31 to the lead-out port 37 is H2, the height H3 from the bottom plate portion 33 of the housing 31 to the top portion 17 of the conical surface 16 which is the wire contact portion is preferably higher than the position of H1 + 1 / 2×(H2 - H1). That is, it is preferable to satisfy H3 > H1 + 1 / 2×(H2 - H1), more preferably H3 > H1 + 5 / 8×(H2 - H1), still more preferably H3 > H1 + 3 / 4×(H2 - H1), and particularly preferably H3 > H1 + 7 / 8×(H2 - H1). The higher the height H3 from the bottom plate portion 33 of the housing 31 to the top portion 17 of the conical surface 16, the more the welding wire W can be guided along the jig near the lead-out port 37, so that the kink prevention effect becomes higher.

[0031] Next, the operation of the pallet pack 30 provided with the kink prevention jig 10 will be described. As shown in FIG. 3, the welding wire W drawn from one end inside the laminated wire 50 (on the inner cylinder 34 side) in the pallet pack 30 is led out from the gap C1 provided between the inner peripheral edge 40a of the wire pressing plate 40 and the outer peripheral surface of the inner cylinder 34, and further led out to the outside of the pallet pack 30 from the lead-out port 37 of the base 38 provided on the lid body 32. The wire pressing plate 40 moves downward as the welding wire W is drawn out and the height of the laminated wire 50 decreases.

[0032] The welding wire W drawn from the laminated wire 50 passes through the gap C2 between the outer peripheral edge 15 of the conical portion 12 and the inner peripheral surface of the outer cylinder portion 35 of the pallet pack 30, is in sliding contact with the outer peripheral edge 15 of the conical portion 12, is drawn upward while moving in the circumferential direction along the conical surface 16, and is led out to the passage space S3.

[0033] As a result of intensive studies by the inventors, in the bail pack 30 with the "inner extraction method" as shown in this embodiment, as the welding wire W is drawn out for a long time, torsion accumulates in the welding wire W, and the welding wire W stacked in a ring shape may rise upward beyond the inner cylinder 34 while remaining in a ring shape. At this time, in the case of a conventional bail pack without a kink prevention jig, it was confirmed that the ring-shaped welding wire W caused a kink by getting over the inner cylinder 34. On the other hand, in this embodiment, since the bottom surface 13 of the conical portion 12 of the kink prevention jig 10 closes the upper side of the inner cylinder 34, even if the welding wire W somehow goes around the side portion of the wire pressing plate 40 and comes out above the wire pressing plate 40 while remaining in a ring shape, it abuts against the bottom surface 13 (outer extension portion 14) of the conical portion 12, so that the welding wire W coming out above the wire pressing plate 40 is prevented from getting over the inner cylinder 34.

[0034] When further torsion is applied to the welding wire W, the welding wire W tries to form a kink by getting over the outer extension portion 14, but in this embodiment, the generation of a kink is prevented by the conical surface 16 of the kink prevention jig 10. Here, when the welding wire W tries to form a kink above the inner cylinder 34, it has been clarified by the study of the inventors that torsion of the welding wire W occurs so that the welding wire W is directed toward the central axis of the outer cylinder portion 35 of the bail pack. Therefore, in the kink prevention jig 10, a conical surface 16 that abuts against the welding wire W is provided so that the welding wire W cannot form a kink. In this embodiment, it is preferable that the space in the lid body 32 is filled by 50% or more by the kink prevention jig 10, more preferably 60% or more, still more preferably 70% or more, and particularly preferably 80% or more.

[0035] Also, the height H3 from the bottom plate portion 33 of the housing 31 to the top 17 of the conical surface 16 which is the wire contact portion is higher than the position of H1+(H2 - H1)×1 / 2, where H1 is the height of the housing 31 and H2 is the height from the bottom plate portion 33 of the housing 31 to the wire outlet 37 of the lid body 32. Therefore, the passage space S3 formed inside the lid body 32 is narrowed by the kink prevention jig 10. Since the passage space S3 is a substantially annular narrow space, even if the welding wire W is twisted within the passage space S3, the welding wire W interferes with the conical surface 16 of the conical portion 12 which is the wire contact portion, and the free movement of the welding wire W is restricted, suppressing the formation of a kink. Then, it passes through the wire outlet 37 of the base 38 and is led out to the outside of the peel pack 30.

[0036] In this way, the movement of the upstream portion of the welding wire W drawn from the laminated wire 50 as seen from the laminated wire 50 is restricted by the gap C1 between the inner peripheral edge 40a of the wire pressing plate 40 and the outer peripheral surface of the inner cylinder 34. Also, the movement of the middle portion of the welding wire W as seen from the laminated wire 50 is restricted by the gap C2 by the outer peripheral edge 15 of the conical portion 12 in sliding contact. Further, the movement of the downstream portion of the welding wire W as seen from the laminated wire 50 is restricted by the wire outlet 37 of the base 38. The welding wire W has its free movement restricted at three locations: the upstream portion, the middle portion, and the downstream portion, effectively suppressing the occurrence of slack. Therefore, kinks are prevented from being formed in the welding wire W.

[0037] In this embodiment, when the size of the gap C2 between the outer peripheral edge 15 of the conical portion 12 and the inner peripheral surface of the outer cylinder portion 35 of the peel pack 30 is 0.10 times or less with respect to the inner diameter D3 of the outer cylinder portion 35, the effect of restricting the laminated wire 50 by the gap C2 can be further improved. As a result, the occurrence of slack in the welding wire W is effectively suppressed, and the effect of preventing kinks from being formed in the welding wire W can be enhanced. On the other hand, when the size of the gap C2 is 0.05 times or more with respect to the inner diameter D3, it is possible to prevent the gap C2 from becoming too narrow and ensure the wire feeding property. Therefore, the size of the gap C2 is preferably 0.05 times or more and preferably 0.10 times or less with respect to the inner diameter D3 of the outer cylindrical portion 35. In order to set the relationship between the size of the gap C2 and the inner diameter D3 of the outer cylindrical portion 35 within the above range, for example, the diameter D2 of the outer peripheral edge 15 of the conical portion 12 in the kink prevention jig 10 may be set to 0.80 times or more and 0.90 times or less with respect to the inner diameter D3 of the outer cylindrical portion 35.

[0038] As a result of intensive studies by the present inventors, it has been found that when excessive torsion accumulates in the welding wire W inside the bellows pack 30 due to long-term welding, the welding wire W is particularly likely to form a kink above the cylindrical portion 11 at this time. For this reason, the above-described kink prevention jig 10 eliminates the space required for the welding wire W to form a kink, thereby preventing kinks. That is, by causing the kink prevention jig 10 to act as a wall, the movement of the welding wire W is restricted, thereby preventing kinks.

[0039] A floating weight (not shown) may be disposed above the wire pressing plate 40. The shape of the floating weight is, for example, spherical, and a through hole for inserting the welding wire W is formed in the floating weight. The diameter of the floating weight is set to be larger than the gap C1 between the inner peripheral edge 40a of the wire pressing plate 40 and the inner cylinder 34, and the inner diameter of the through hole is set to be larger than the outer diameter of the welding wire W. Then, when the welding wire W is drawn out from the laminated wire 50, the floating weight revolves along the outer peripheral surface of the inner cylinder 34 while being in contact with the wire pressing plate 40 and the inner cylinder 34 above the gap C1. At this time, the occurrence of kinks is prevented by suppressing the occurrence of slack in the wire due to the floating weight.

[0040] Also, in the pallet pack 30 provided with the kink prevention jig 10A of the modified example shown in FIGS. 2A and 2B, since the upper part of the conical surface 16 of the kink prevention jig 10A is a truncated cone 22 having a flat surface 21 cut parallel to the bottom surface 13, when the height of the truncated cone 22 is set to the same height as the conical part 12 of the kink prevention jig 10 of the embodiment shown in FIG. 1, in a cross-sectional view in the vertical direction (vertical direction) of the kink prevention jig 10A, the angle α sandwiched between the bottom surface 13 and the conical surface 16 becomes larger. Therefore, as the inclination angle of the conical surface 16 is larger, the passage space S3 formed inside the lid 32 becomes narrower, and the kink prevention effect is enhanced. Note that there is no particular limitation on the magnitude of the angle α, but in order to effectively exhibit kink prevention, any of the kink prevention jig 10 shown in FIG. 1, the kink prevention jig 10A shown in FIG. 2A, and the kink prevention jig 10B shown in FIG. 2B is preferably 30° or more, more preferably 40° or more, still more preferably 45° or more, and particularly preferably 55° or more. Here, the angle α is an angle directed upward with respect to the horizontal direction. There is no particular upper limit to the angle α, but for example, it is 75° or less or 65° or less.

[0041] <Second Embodiment> As shown in FIG. 4, the pallet pack 30 of the second embodiment is a so-called "external extraction type" pallet pack 30, and like the kink prevention jig 10 of the first embodiment, includes a housing 31 and a lid 32 provided to cover an opening 39 at the upper part of the housing 31. The housing 31 has an inner cylinder 34 and an outer cylinder part 35 coaxially arranged on a bottom plate part 33, and a laminated wire 50 formed by winding a welding wire W is accommodated between the inner cylinder 34 and the outer cylinder part 35.

[0042] The lid 32 is formed in a substantially frustum shape with an outer diameter gradually decreasing upward, and a base 38 having an outlet 37 from which the welding wire W is drawn out is fixed to its top 36. That is, the housing 31 forms a housing space S1 for accommodating the laminated wire 50 inside, and the lid 32 forms a substantially frustum-shaped passage space S3 inside.

[0043] Further, an annular wire pressing plate 40 is placed on the laminated wire 50, and the laminated wire 50 is pressed downward by the self-weight of the wire pressing plate 40. The outer diameter of the wire pressing plate 40 is smaller than the inner diameter of the outer cylinder portion 35, and a gap C1 for pulling out the welding wire W is provided between the outer peripheral edge 40b of the wire pressing plate 40 and the inner peripheral surface of the outer cylinder portion 35. The size of the gap C1 is set to be larger than the outer diameter of the welding wire W.

[0044] Similar to the first embodiment, the kink prevention jig 10 is attached to the pallet pack 30 by engaging the cylindrical portion 11 with the inner cylinder 34 of the pallet pack 30. As a result, the substantially frustum-shaped internal space formed by the lid body 32 is narrowed by the conical portion 12, and the space through which the welding wire W drawn from the laminated wire 50 can pass becomes a passage space S3, which is a portion obtained by removing the volume S2 of the conical portion 12 from the substantially frustum-shaped internal space formed inside the lid body 32. Note that the diameter D2 of the bottom surface 13 of the conical portion 12 is smaller than the inner diameter of the outer cylinder portion 35, and a gap C2 is provided between the outer peripheral edge 15 of the conical portion 12 and the inner peripheral surface of the outer cylinder portion 35 of the pallet pack 30.

[0045] Also, similarly in this embodiment, the height H3 of the top 17 of the conical surface 16, which is the wire contact portion, is set higher than the position of H1+(H2 - H1)×1 / 2, where H1 is the height of the housing 31 and H2 is the height of the wire outlet 37 of the welding wire W of the lid body 32.

[0046] Then, the welding wire W drawn from one end on the outer diameter side (i.e., the outer cylinder portion 35 side) of the laminated wire 50 is drawn upward from the gap C1 between the outer peripheral edge 40b of the wire pressing plate 40 and the inner peripheral surface of the outer cylinder portion 35, and further led out to the outside of the pallet pack 30 from the wire outlet 37 of the base 38 provided on the lid body 32.

[0047] The wire pressing plate 40 moves downward as the welding wire W is drawn out and the height of the laminated wire 50 decreases.

[0048] The welding wire W drawn from the laminated wire 50 and drawn into the accommodation space S1 slides in contact with the outer peripheral edge 15 of the conical portion 12 through the gap C2 between the outer peripheral edge 15 of the conical portion 12 and the inner peripheral surface of the outer cylinder portion 35 of the peel pack 30, and is drawn upward while moving in the circumferential direction along the outer peripheral edge 15, and is led out to the passage space S3.

[0049] Also, the height H3 from the bottom plate portion 33 of the housing 31 to the top 17 of the conical surface 16 which is the wire contact portion is higher than the position of H1+(H2 - H1)×1 / 2, where H1 is the height of the housing 31 and H2 is the height from the bottom plate portion 33 of the housing 31 to the wire outlet 37 of the welding wire W of the lid body 32. Therefore, the passage space S3 formed inside the lid body 32 is narrowed by the kink prevention jig 10. Since the passage space S3 is a substantially annular narrow space, even if the welding wire W is likely to be twisted and entangled within the passage space S3, the welding wire W interferes with the conical surface 16 of the conical portion 12 which is the wire contact portion, and the free movement of the welding wire W is restricted, thereby suppressing entanglement. Then, it passes through the wire outlet 37 of the base 38 and is led out to the outside of the peel pack 30.

[0050] In this way, the movement of the upstream portion of the welding wire W drawn from the laminated wire 50 as viewed from the laminated wire 50 is restricted by the gap C1 between the outer peripheral edge 40b of the wire pressing plate 40 and the inner peripheral surface of the outer cylinder portion 35, the movement of the middle portion as viewed from the laminated wire 50 is restricted by the gap C2 by the outer peripheral edge 15 of the conical portion 12 with which it is in sliding contact, and the movement of the downstream portion as viewed from the laminated wire 50 is restricted by the wire outlet 37 of the base 38. The free movement of the welding wire W is restricted at three locations: the upstream portion, the middle portion, and the downstream portion, and the occurrence of slack is effectively suppressed. Therefore, similar to the first embodiment, the welding wire W is prevented from becoming entangled.

[0051] Similarly, in the second embodiment, the size of the gap C2 between the outer peripheral edge 15 of the conical portion 12 and the inner peripheral surface of the outer cylinder portion 35 of the peel pack 30 is preferably 0.05 times or more and preferably 0.10 times or less with respect to the inner diameter D3 of the outer cylinder portion 35. Further, in order to make the relationship between the size of the gap C2 and the inner diameter D3 of the outer cylindrical portion 35 within the above range, the diameter D2 of the outer peripheral edge 15 of the conical portion 12 in the kink prevention jig 10 may be set to be 0.80 times or more and 0.90 times or less with respect to the inner diameter D3 of the outer cylindrical portion 35.

[0052] <Third Embodiment> FIG. 5 is a cross-sectional view of a bail pack according to the third embodiment of the present invention. As shown in FIG. 5, the bail pack 30 of the third embodiment is of the "inner drawer type" and is a modification of the first embodiment. Therefore, in FIG. 5, descriptions of the same or equivalent parts as those of the first embodiment shown in FIG. 3 are omitted or simplified. In the bail pack 30 of the third embodiment, the outward extending portion 14 of the conical portion 12 has a shape that extends obliquely upward from the cylindrical portion 11 toward the outer peripheral edge 15. The angle β shown in FIG. 5 is the angle formed by the horizontal direction in the cross-sectional view of the bail pack and the extending direction of the outward extending portion 14.

[0053] Thus, when the outward extending portion 14 of the conical portion 12 has a shape that extends obliquely upward from the cylindrical portion 11 toward the outer peripheral edge 15, both the effect of preventing the wire W from floating and the effect of improving the wire feeding property can be improved. In particular, when the angle β is 40° or less, the outward extending portion 14 can prevent the wire W from floating and the wire feeding property is improved. Therefore, the angle β is preferably 40° or less, more preferably 30° or less, and even more preferably 20° or less. As described above, the angle β may be negative, that is, the outward extending portion 14 of the conical portion 12 may have a shape that extends obliquely downward from the cylindrical portion 11 toward the outer peripheral edge 15. However, in order to ensure good wire feeding property, the angle β is preferably 0° or more. Also, for the reason that the manufacture of the kink prevention jig 10 becomes easier, the angle β is more preferably 0° or more and 10° or less.

[0054] Also, similar to the first embodiment, the lid 32 of the peel pack 30 is formed in a substantially frustum - shaped cone with an outer diameter gradually decreasing upward, and a base 38 having a lead - out port 37 from which the wire W is drawn out is fixed to the top 36 thereof. However, a plastic pipe 41 is disposed on the inner surface side of the base 38 where the wire W contacts, and a wire inlet 42 radially spreading toward the passage space S3 is formed in the pipe 41.

[0055] In this way, when the pipe 41 disposed in the base 38 radially spreads downward, which is the passage space S3, it becomes easier to introduce the wire W into the passage space S3, and it is less likely to have kinks, and the feeding property can be improved. The material of the pipe 41 is preferably a material that can suppress wear and generation of metal chips due to sliding between the pipe 41 and the wire W, and for example, it is preferably plastic, ceramic, or the like. When the pipe 41 having the wire inlet 42 is made of a material that can suppress wear and the like due to sliding with the wire W, generation of metal chips can be suppressed, so generation of feeding failure and the like due to deposition of metal chips can be suppressed.

[0056] Note that the present invention is not limited to the above - described embodiments, and modifications, improvements, etc. can be made as appropriate.

[0057] For example, as a kink - preventing jig 10C according to another modification, as shown in FIG. 6A, the shape of the portion corresponding to the conical portion 12 in FIG. 1 can also be configured as a combination of a cylindrical portion 23 and a frustum 22. Also, as a kink - preventing jig 10D according to another modification, as shown in FIG. 6B, it can also be configured as a combination of a plurality of cylindrical portions 23 with an outer diameter gradually decreasing upward.

[0058] Also, as kink prevention jigs 10E and 10F according to other modified examples, as shown in FIGS. 6C and 6D respectively, it is also possible to configure having a plurality of perforated disks 25 that are engaged and fixed to a support column 24 formed to protrude above a cylindrical portion 11 that engages with an inner cylinder 34 of a peel pack 30. In this case, the outer peripheral edge of each disk 25 acts as a wire contact portion that guides the welding wire W, preventing the welding wire W from getting entangled. In FIGS. 6C and 6D, the support column 24 has a conical shape, but it is not limited thereto. Furthermore, as a kink prevention jig 10G according to another modified example, as shown in FIG. 6E, it is also possible to configure by forming a plurality of holes 26 in a cylindrical portion 11, a conical portion 12, etc. to reduce the weight.

[0059] As described above, various embodiments have been described with reference to the drawings, but it goes without saying that the present invention is not limited to such examples. It is obvious that those skilled in the art can conceive of various modification examples or correction examples within the scope described in the claims, and it is naturally understood that they also belong to the technical scope of the present invention. Also, within the scope not departing from the gist of the invention, the respective components in the above-described embodiments may be arbitrarily combined.

Explanation of Reference Numerals

[0060] 10, 10A~10G Kink prevention jig 11 Cylindrical portion (connection portion) 12 Conical portion 13 Bottom surface 14 Outer extending portion 15 Outer peripheral edge 16 Conical surface (wire contact portion) 17 (Top of the conical surface) 21 Plane 22 Frustum of a cone 30 Peel pack 31 Housing 32 Lid 33 Bottom plate portion 34 Inner cylinder 35 Outer cylinder portion 36 (Top of the lid) 37 Outlet 39 Opening 40 Wire pressing plate 50 Laminated wire H1 Height of the housing H2 Height of the outlet H3 Height of the top of the wire contact part S1 Accommodation space S2 Volume of the conical part 12 S3 Passage space W Welding wire

Claims

Claim 1 A pallet pack comprising a housing having a bottom plate portion and a cylindrical outer cylinder portion for accommodating a laminated wire, a wire outlet disposed above the housing, and a kink prevention jig, wherein the kink prevention jig is provided above the laminated wire and has an outward extension portion extending in the radial direction of the outer cylinder portion, and a wire contact portion formed above the outward extension portion for preventing the occurrence of kinks by coming into contact with the wire when the wire is drawn out from the outlet, wherein the top of the wire contact portion is at a position higher than H1 + 5 / 8×(H2 - H1), where H1 is the height of the housing and H2 is the height of the outlet, and a clearance between the outer peripheral edge of the wire contact portion and the outer cylinder portion is 0.05 times or more and 0.10 times or less the inner diameter of the outer cylinder portion. The pallet pack is characterized by this. Claim 2 The pallet pack has an inner cylinder provided inside the coiled laminated wire in the housing, and the kink prevention jig has a connection portion extending downward from the outward extension portion and engaging with the inner cylinder. The pallet pack according to claim 1 is characterized by this. Claim 3 The wire contact portion is formed in a substantially conical shape. The pallet pack according to claim 1 is characterized by this. Claim 4 The pallet pack includes a pressing plate for pressing the laminated wire downward, and the laminated wire is drawn out by an in-drawing method. The pallet pack according to claim 1 is characterized by this. Claim 5 The housing has a lid provided to cover an opening facing the bottom plate portion, and the lid has a substantially conical shape with an outer diameter gradually decreasing upward. The pallet pack according to claim 1 is characterized by this.

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