JP2013023290A - Winding core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding core which can realize support to various types of belt-like products having different widths with a few types of winding cores and which is inexpensive and has high intensity.SOLUTION: In the winding core 1 configured with an external cylindrical portion 2 and an internal cylindrical portion 3, and between the external cylindrical portion 2 and the internal cylindrical portion 3, a plate-like rib 4 is connected in a radial fashion, the plate-like rib 4 is parallel to an axial direction of the external cylindrical portion 2, and a length of the external cylindrical portion 2 is longer than a length of the internal cylindrical portion 3 and a length of the plate-like rib 4.

Description

  The present invention relates to a winding core for winding a tape, film, sheet or the like (hereinafter referred to as a band-like product) formed in a band shape into a roll shape, and more specifically, the width is different for a small number of types of winding cores. The present invention relates to a winding core that is compatible with a wide variety of strip products, is inexpensive and has high strength.

  Conventionally, when storing and transporting a belt-shaped product, for example, a cylindrical core as described in FIG. 1 of Cited Document 1 is used, and a roll is wound around the core around the core. It was supposed to be a body. The cylindrical core as described in the cited document 1 can be used by appropriately cutting a single long cylindrical member into an appropriate length according to the width of the strip product, etc. However, since such a simple cylindrical core is low in strength, it is often not suitable as an industrial core for winding a large amount of strip-shaped products, and is mainly used for home use. Yes.

  As the strong core, for example, as shown in FIG. 9, a double structure of an outer cylinder part and an inner cylinder part, and a rib provided between the outer cylinder part and the inner cylinder part is used. ing. Unlike a simple cylindrical core, such a double-structured core cannot be cut easily, so each strip product can be used to handle a wide variety of strip products with different widths. A wide variety of cores are manufactured separately for each.

Japanese Patent Laid-Open No. 10-101268

However, the mold for manufacturing the winding core is expensive, and a separate mold is required for each type of winding core. Therefore, if a variety of winding cores are manufactured, the cost becomes very high. In addition, inventory management of the winding core is troublesome.
In view of such circumstances, the present invention aims to provide an inexpensive and high-strength core that can be used with a small number of molds, that is, a wide variety of strip-like products having different widths with a small number of cores. To do.

  The present invention has been made to achieve the above object. The first feature of the present invention is that it comprises an outer tube portion and an inner tube portion, and a plate-like rib is provided between the outer tube portion and the inner tube portion. It is a winding core connected radially, the plate-like rib is parallel to the axial direction of the outer cylinder part, and the length of the inner cylinder part and the length of the plate-like rib are the length of the outer cylinder part The content is a shorter winding core.

  The second feature of the present invention includes the above-described winding core in which the length of the outer cylinder portion is 1.1 to 9.0 times the length of the inner cylinder portion.

  A third feature of the present invention includes the above-described winding core in which the length of the outer cylinder portion is 1.1 to 3.0 times the length of the plate-like rib.

  The fourth feature of the present invention is the above-described winding core in which the plate-like rib has a trapezoidal shape in which the length of the outer side is larger than the length of the inner side.

  The fifth feature of the present invention includes the above-described winding core in which the length of the outer side of the plate-like rib is 1.1 to 3.0 times the length of the inner side.

  A sixth feature of the present invention includes the above-described winding core having a scale formed on the surface of the outer cylinder portion.

The winding core of the present invention comprises an outer cylinder part and an inner cylinder part, and plate ribs are connected radially between the outer cylinder part and the inner cylinder part. Can turn.
Further, the length of the outer cylinder part is longer than the length of the plate-like rib and the length of the inner cylinder part, so that there is a part where the outer cylinder part does not overlap with the plate-like rib or the inner cylinder part, and this part can be easily cut. Therefore, by cutting and removing a part of the outer tube portion according to the width of the belt-shaped product and adjusting the length, it is possible to deal with a wide variety of belt-shaped products with a small number of types of winding cores.

  If the length of the outer cylinder part is in the range of 1.1 to 9.0 times the length of the cylindrical part, the length of the outer cylinder part can be adjusted while maintaining the strength.

  If the length of the outer cylinder part is in the range of 1.1 to 3.0 times the length of the plate-like rib, a high strength and a large amount of strip-like product can be wound.

  If the shape of the plate-like rib is a trapezoid whose outer side length is larger than the inner side length, the portion provided with the plate-like rib can be easily cut if necessary. It can handle a wider variety of strip products.

  If the length of the outer side of the plate-shaped rib is in the range of 1.1 to 3.0 times the length of the inner side, the force applied to the outer cylindrical part will be concentrated too much on the inner cylindrical part and break. No trouble occurs.

  If a scale is formed on the surface of the outer cylinder part, the outer cylinder part can be easily and accurately cut by moving a cutter or the like along the scale to obtain a desired length of the outer cylinder part.

FIG. 1 is a perspective view showing an example of a winding core of the present invention. FIG. 2 is a front view of the winding core of FIG. 3 is a cross-sectional view taken along the line AA in FIG. FIG. 4 is a schematic cross-sectional explanatory view showing how to use the core of the present invention. FIG. 5 is a front view showing another example of the winding core of the present invention. FIG. 6 is a schematic sectional view showing still another example of the core of the present invention. FIG. 7 is a schematic cross-sectional explanatory view showing how to use the core of the present invention. FIG. 8 is a side view showing still another example of the winding core of the present invention. FIG. 9 is a perspective view showing a conventional winding core.

  The winding core 1 of the present invention comprises an outer cylinder part 2 and an inner cylinder part 3 as shown in FIGS. 1 to 3, for example, and a plate-like rib 4 is provided between the outer cylinder part 2 and the inner cylinder part 3. The plate-like ribs 4 are connected in a radial manner, and are parallel to the axial direction of the outer cylinder part 2. The length of the outer cylinder part 2 is the length of the inner cylinder part 3 and the length of the plate-like rib 4. It is characterized by being longer than that.

  In the present invention, the material of the winding core 1 is not particularly limited as long as it is a material that can obtain a strength that does not break even when a belt-shaped product is wound and can be cut using a cutting means such as a cutter or a saw. Although it is not done, a synthetic resin is preferable in terms of excellent formability and lightness. Specifically, ABS resin (acrylonitrile-butadiene-styrene copolymer resin), AAS resin (acrylonitrile / acrylic rubber / styrene resin), AES resin (acrylonitrile / ethylene propylene rubber / styrene resin), AS resin (acrylonitrile / styrene resin) ), PS resin (polystyrene resin), PMMA resin (polymethyl methacrylate resin), PVC resin (polyvinylidene chloride resin), MS resin (methyl methacrylate / styrene resin), PP resin (polypropylene resin), PE resin (polyethylene resin) PBT resin (polybutylene terephthalate resin), PC resin (polycarbonate resin) and the like can be suitably used. Biodegradable plastics such as polylactic acid resin, polybutylene succinate, polyamide 11, polyhydroxybutyric acid, and biomass plastics can also be used.

  The outer cylinder part 2 is a cylindrical member for winding a strip-shaped product on the outer surface. The length and diameter of the outer tube portion 2 are not particularly limited, and may be determined as appropriate according to the width of the strip-shaped product to be wound.

  However, when the outer cylindrical portion 2 alone is used, a large amount of the strip-shaped member may be bent or bent to damage or deform the wound strip-shaped product. A plate-like rib 4 is provided on the inside to reinforce. The number of ribs 4 is preferably about 4 to 12.

  Further, in a normal case, a rotating shaft is inserted in the vicinity of the center of the winding core 1, and a strip product is wound around the winding core to form a roll body, and when the strip product is used, the roll body is rotated. Since the strip-shaped product is fed out, the inner cylinder portion 3 is provided inside the plate-like rib 4 so that the rotation shaft can be easily inserted.

  For example, as shown in FIG. 3, the present invention is characterized in that the length of the outer cylindrical portion 2 is longer than the length of the inner cylindrical portion 3 and the length of the plate-like rib 4. In this way, a portion where the plate-like rib 4 and the inner tube portion 3 do not overlap each other is formed at the end of the outer tube portion 2, so that the portion can be easily cut as shown by an arrow in FIG. This makes it possible to adjust the length of the core 1 in accordance with the width of the belt-like product.

The relationship between the length of the outer cylindrical portion 2, the length of the plate-like rib 4, and the length of the inner cylindrical portion 3 is the length of the outer cylindrical portion 2> the length of the plate-like rib 4 ≧ the length of the inner cylindrical portion 3. It may be determined so as to satisfy the relationship.
Specifically, the length of the outer cylinder part 2 is preferably 1.1 to 9.0, more preferably 1.2 to 6.0 times the length of the inner cylinder part 3, and particularly preferably 1. 3 to 3.0 times. If this magnification is less than 1.1 times, the range of adjusting the length by cutting and removing the end portion of the outer cylinder portion 2 becomes small. On the other hand, if it exceeds 9.0 times, the strength of the outer cylinder portion 2 becomes small. There is a tendency to weaken.
Further, the length of the outer cylindrical portion 2 is preferably 1.1 to 3.0 times the length of the plate-like rib 4, more preferably 1.4 to 2.5 times, and particularly preferably 1.7 to 3.0 times. 2.0 times. If this magnification is less than 1.1 times, the range in which the outer cylinder part 2 can be easily cut and removed (the outer cylinder part 2 is a single part) is small, whereas if it exceeds 3.0, the strength of the outer cylinder part 2 Tend to be weak.

  The shape of the plate-like rib 4 is not particularly limited as long as the outer tube portion 2 can be suitably reinforced. For example, as shown in FIG. 5, a plate-like rib having a bifurcated tip may be formed. Further, the shape of the cross section parallel to the extending direction of the outer cylinder portion 2 is not particularly limited, and for example, the trapezoidal shape shown in FIG. 3 and the rectangular shape shown in FIG. It is preferable to use a trapezoidal shape in which the length of the outer side is larger than the length of the inner side. In the case of such a shape, as shown by the arrows in FIG. 7, the outer cylindrical portion 2 can be cut even at the portion where the plate-like rib is present, and the range in which the length can be adjusted is widened. Increased product types.

  When the shape of the plate-like rib 4 is a trapezoid in which the length of the outer side is larger than the length of the inner side as shown in FIG. 3, the length of the outer side of the plate-like rib 4 is preferable. Is 1.1 to 3.0 times the length of the inner side, more preferably 1.4 to 2.5, and particularly preferably 1.7 to 2.0 times. If this magnification is smaller than 1.1 times, the force applied to the outer cylinder part 2 tends to concentrate on a small part of the inner cylinder part 3 and damage tends to occur. Moreover, when larger than 3.0 times, the range which can cut | disconnect the outer cylinder part 2 easily (the part where the outer cylinder part 2 is single) will become small, and the winding core 1 prepared in order to respond | correspond to various belt-shaped members As the number increases, the cost tends to increase.

  In the above description, the length of the plate-shaped rib, the length of the inner side of the plate-shaped rib, and the length of the outer side are the lengths in the direction parallel to the axial direction of the outer cylindrical portion 2, respectively. Shall.

  In the present invention, as shown in FIG. 8, a scale 5 may be formed on the surface of the outer cylinder portion. When the scale 5 is provided, since the scale 5 can be used as a mark when the outer cylinder portion 2 is cut, cutting is facilitated. In this case, by setting the center scale to 0, for example, when it is desired to set the length of the outer cylinder part to 5 cm, it is only necessary to cut the center 0 scale from the center to the left and right at 2.5 cm. Etc. are not necessary, so workability is good.

  As described above, the winding core of the present invention has a portion where the length of the outer tube portion is larger than the length of the inner tube portion and the length of the plate-like rib, and preferably does not overlap the inner tube portion, preferably the inner tube portion and the plate. If necessary, the length is adjusted by cutting and removing the outer cylindrical portion of the portion where the ribs do not overlap, so that various types of strip products can be accommodated with a small number of winding cores. Therefore, since the cost of the mold is reduced, a highly strong core can be supplied at a low cost, and manufacturing and inventory management is facilitated, which is extremely useful.

DESCRIPTION OF SYMBOLS 1 Winding core 2 Outer cylinder part 3 Inner cylinder part 4 Plate-like rib 5 Scale

Claims (6)

A winding core comprising an outer tube portion and an inner tube portion, and plate-like ribs connected radially between the outer tube portion and the inner tube portion,
The plate-like rib is parallel to the axial direction of the outer cylinder part,
The length of the said outer cylinder part is longer than the length of the said inner cylinder part, and the length of a plate-shaped rib, The winding core characterized by the above-mentioned.   The length of an outer cylinder part is 1.1 to 9.0 times the length of an inner cylinder part, The winding core of Claim 1 characterized by the above-mentioned.   The length of an outer cylinder part is 1.1 to 3.0 times the length of a plate-shaped rib, The winding core of Claim 1 or 2 characterized by the above-mentioned.   The core according to any one of claims 1 to 3, wherein the plate-like rib has a trapezoidal shape in which the length of the outer side is larger than the length of the inner side.   The winding core according to any one of claims 1 to 4, wherein the length of the outer side of the plate-like rib is 1.1 to 3.0 times the length of the inner side.   The scale according to any one of claims 1 to 5, wherein a scale is formed on a surface of the outer cylinder portion.

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