JP3519387B2 - Protection plate and coil body - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective plate for protecting a coil formed by winding a packing string for packaging various articles, and a coil body in which the protective plate and the coil are bound together, and more particularly, It relates to such a coil having no core.

[0002]

2. Description of the Related Art Conventionally, as a coil body having no such core, there is one shown in FIG. In FIG. 5, reference numeral 1 indicates a coil. The coil 1 is formed by winding a resin string 2 such as polypropylene in a coil shape, and has a hollow portion 3 in the center thereof.

Reference numeral 4 indicates a protective plate. The protective plate 4 is made of cardboard or a plastic plate, has an outer diameter substantially equal to the outer diameter of the coil 1, and has a disk-like shape with a central hole 5 having an inner diameter equal to the inner diameter of the hollow portion 3 of the coil 1. It is a thing. The protective plates 4 and 4 are in contact with both side surfaces of the coil 1 and are tightly bound to the coil 1 by a plurality of binding cords 6, 6 ... That is, each binding string 6
Are spanned from the outer peripheral surface of the coil 1 to the inner peripheral surface thereof.

However, in the coil body having such a structure,
There is a drawback that the binding string 6 is displaced during transportation or the like, and it is not possible to maintain the state of uniformly binding the coil bodies. For this reason, there has been a problem in that the coil collapses due to an external force during transportation and the outer shape of the coil 1 and the shape of the hollow portion 3 are deformed. Further, when the coil body is dropped or rolled on the floor, the outer peripheral surface of the coil 1 directly contacts the floor, and thus the coil body is deformed or the outer peripheral surface of the coil 1 is damaged.

[0005]

SUMMARY OF THE INVENTION Therefore, the object of the present invention is to prevent the position of the binding cord of the coil body from being displaced and to maintain a uniform binding state, and to drop or roll the coil body on the floor. Even so, the coil body is not deformed and the outer peripheral surface of the coil is not damaged.

[0006]

In order to solve this problem, the invention according to claim 1 is such that the packing cord is wound without a winding core.
A hollow coil that is turned and both sides of this coil
A disk-shaped protective plate that is abutted and has a central hole, and
Consists of multiple binding cords that bind the il and protection plate together
A protection plate used for a coil body, wherein the protection plate is
Multiple notches are formed on the outer circumference of the protective plate
Is located outside the outer peripheral surface of the coil, and the cutout of the protective plate
The bottom of the tie is located inside the outer circumference of the coil,
Is to be able to hang on the notch of the protective plate
Is a protective plate. The invention according to claim 2 is
The inner peripheral edge is located outside the inner peripheral surface of the coil
The protective plate according to claim 1, wherein

The invention according to claim 3 is the protective plate according to claim 1 or 2, wherein the protective plate is made of a plastic corrugated board. The invention according to claim 4 is
A hollow coil formed by winding a packing string without a winding core , a disk-shaped protective plate that is in contact with both side surfaces of the coil and has a central hole, and the coil and the protective plate are tightly bound together. A coil body composed of a plurality of binding cords, in which a plurality of cuts are formed on the outer periphery of the protective plate, the outer peripheral edge of the protective plate is located outside the outer peripheral surface of the coil, and the bottom of the cut of the protective plate Is located inward of the outer peripheral surface of the coil, and the binding string is hung on the notch of the protective plate.

The invention according to claim 5 is the coil body according to claim 4, wherein the inner peripheral edge of the protective plate is located outside the inner peripheral surface of the coil. In the invention according to claim 6, the binding string is hung around the outer peripheral surface of the coil.
The coil body according to claim 4 or 5, characterized in that
It

In the invention according to claim 7, the binding cord is a coil.
That it is hung from the outer peripheral surface to the inner peripheral surface of
The coil body according to claim 4, 5 or 6, characterized in that
It The invention according to claim 8 provides a packing cord and a binding cord.
Packing for installation in a thermoplastic resin band-shaped automatic packing machine
It is a cord for string, Claim 4, 5, 6 or 7 characterized by the above-mentioned.
It is the described coil body. The packing string and the binding string in the present invention are used to include a round string, a twisted string, a rope, a band, a uniaxially stretched elongated body, and the like.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on its embodiments. 1 and 2 show an example of the protective plate of the present invention. The protective plate 11 is a disk-shaped member made of a plate body such as a cardboard, a wood plate, and a plastic plate, and a concentric center hole 12 is formed in the center thereof.

Further, the outer peripheral edge of the protective plate 11 is formed with a plurality of notches 13, usually 3 to 12, and preferably eight notches 13 shown in the drawing, at equal intervals. As shown in FIG. 2, the notch 13 has a rectangular planar shape, the width W of the bottom 13a thereof is 15 to 30 mm, and the notch depth D is 5 to 20 mm. The protective plate 11 having such a structure is manufactured by punching, for example, and is easy to manufacture.

The material for forming the protective plate 11 is not particularly limited as long as it is a plate body. Among them, a plastic corrugated board made of synthetic resin such as polypropylene is lightweight, has high strength and is water resistant. It is also preferable because it is excellent. This plastic corrugated board has a structure similar to that of ordinary corrugated paper, and has a structure in which innumerable plastic ribs are erected between two plastic sheets, and the thickness thereof is about 4 to 6 mm. belongs to.

3 and 4 show an example of the coil body of the present invention, in which reference numeral 14 indicates a coil. The coil 14 is made of a thermoplastic resin such as polypropylene, polyethylene, polyethylene terephthalate, or polyamide.
The width is 5 to 25 mm and the thickness is 0.
A band-shaped packing string 15 of about 3 to 1 mm is used for 1000 to 50
It has a cylindrical shape wound in a coil shape over a length of 00 m, and has a hollow portion 16 having a diameter of about 100 to 400 mm inside.
The outer diameter is about 300 to 700 mm and the axial length is about 100 to 300 mm.

On both side surfaces of the coil 14, a plurality of (eight in the illustrated example) binding cords 17, 17 ... ,
It is fixed. The required number of binding strings 17 is the protective plate 11
However, when the number of the binding cords 17 is small, the strength of the protective plate 11 needs to be significantly increased.

For example, when the number of the binding strings 17 is six, the strength of the protective plate 11 made of a commercially available polypropylene corrugated board having a thickness of 5 mm is insufficient and a stronger plate is required. For this reason, the six straps of the tying string 17 require further devising on the assumption of an increase in the weight and cost of the plate body.
If it is a main cover, a desired strength can be obtained with the same corrugated board. However, if the number of the binding cords 17 is increased too much, the workability is deteriorated.

If a similar corrugated board having a thickness of 4 mm is used, it is not enough to hang eight binding cords 17. Further, when using a normal plate or low foam plate made of polypropylene, in order to obtain the desired strength, it is necessary to increase the thickness and weight of the plate, and such a plate is not a general-purpose product. Since it does not exist, it causes a significant cost increase and is not practical.

As for the positional relationship between the protective plate 11 and the coil 14, first, the outer peripheral edge of the protective plate 11 is located outside the outer peripheral surface of the coil 14, as shown in FIG. In other words, the outer diameter of the protective plate 11 is slightly larger than the outer diameter of the coil 14. This dimensional difference, that is, the overhanging dimension of the outer peripheral edge of the protective plate 11 is 2 to 10
mm. In addition, in FIG. 4, a part of the binding cord 17 is omitted and drawn.

Further, the outer peripheral surface of the coil 14 is located outside the bottom portion 13a of the cut 13 formed in the protective plate 11. In other words, the distance from the bottom portion 13a of the cut 13 to the center of the protective plate 11 is the coil 14
Is smaller than the radius of the outer peripheral surface. This dimensional difference, that is, the bottom portion 13 of the notch 13 on the outer peripheral surface of the coil 14.
The protruding size from a is 2 to 10 mm.

Further, the diameter of the hollow portion 16 of the coil 14 is
From the diameter of the central hole 12 of the protective plate 11, slightly 1 to 5 mm
And the inner peripheral surface of the coil 14 is smaller than the protective plate 11.
Is slightly overhanging from the center hole 12. Further, when the two protective plates 11, 11 are brought into contact with both side surfaces of the coil 14, the positions of the notches 13, 13 ... Formed in the respective protective plates 11, 11 are aligned with each other. The relative positions of the protective plates 11 and 11 are determined.

Each of the binding cords 17, 17 ... Is hung on the notches 13 and 13 of the protective plates 11 on both sides, as shown in the drawing, and the center of the protective plate 11 is extended from the outer peripheral surface of the coil 14. Through the hole 12 and the hollow portion 16 of the coil 14,
The two protective plates 11 and 11 and the coil 14 are tightly bound together and fixed. In addition, the whole binding cord 18, 18 is 2
The book is wound around the outer peripheral surface of the coil 14 so as to be orthogonal to each other. The whole binding cord 18 is also hung on the notches 13 and 13 of the protective plate 11.

In such a coil body, the binding cord 1
Since 7 is located in the vicinity of the bottom portion 13a of the cut 13 of the protection plate 11, the tying cord 1
The coil 14 can be evenly bound and the state can be maintained for a long time without causing the positional displacement of the coil 7.

Further, the outer peripheral surface of the coil 14 projects slightly outward from the bottom portion 13a of the cut 13 of the protective plate 11, and the inner peripheral surface of the coil 14 also has the central hole 12 of the protective plate 11.
Since it is slightly overhanging from the inner peripheral edge of
7 is strongly pressed against the outer peripheral surface and the inner peripheral surface of the coil 14, the binding of the coil 14 by the binding string 17 is tightly and firmly performed, and the winding start end and the winding end of the packing string 15 are not loosened, and the coil 14 The shape of itself is prevented from being lost.

Further, since the outer peripheral edge of the protective plate 11 projects outward from the outer peripheral surface of the coil 14, the protective plate 11 is dropped when the coil body is dropped on the floor or rolled.
Since the outer peripheral edge of the coil contacts the floor surface, the outer peripheral surface of the coil is not damaged, and the coil is not directly subjected to an impact force, so that the coil is not deformed.

Furthermore, since the protective plate 11 and the coil 14 are firmly and tightly bound together, the mechanical strength of the coil body as a whole is enhanced and the coil body is not deformed even when a large external force is applied. It doesn't lose its shape. For this reason, it can be transported in this state without being packaged again.

Further, since the protective plate 11 itself has an extremely simple structure, it can be obtained at a low cost and has a flat plate shape, so that a large number of sheets can be stacked and stored when not in use. Can be easily stored and transported. In addition, it can be reused, withstands repeated use, and saves resources.

In particular, when the protective plate 11 is made of a plastic corrugated board, it is lightweight, has high strength, is excellent in water resistance, and can be reused more frequently, resulting in cost reduction. Further, the one with the whole binding cord 18 hung is convenient for carrying the coil body, and since the whole binding cord 18 is also hung on the notch 13 of the protection plate 11, the positional deviation does not occur.

When the coil body is not used by being attached to the packing machine, the coil 1 can be cut by cutting the binding cord 17.
Since the winding start of the packing string 15 can be immediately taken out from the inner circumference of 4, it is easy to use as a hand tie.

Further, even though there is no winding core, the starting end of the packing cord 15 is not loosened, and the hollow portion 16 of the coil 14 is deformed, which makes it difficult to mount it on the holding shaft of the automatic packing machine. There is no. Further, since it has no core, it does not become a waste, and its disposal does not take time.

It is also possible to form a cut having the same shape as that formed on the outer peripheral edge on the inner peripheral edge of the protective plate 11 and hang the binding cord 17 and the overall binding cord 18 on it. It is also possible to fix the winding end of the packing string 15 located on the outer peripheral surface of the coil 14 with an adhesive label, and to display on the adhesive label that the end of the packing string 15 exists there. Further, at least the vicinity of the outer peripheral surface of the coil 14 of the coil body may be covered with a stretchable film to prevent the outer peripheral surface from being contaminated with dirt or the like.

A specific example will be shown below. The coil body shown in FIGS. 3 and 4 was produced. The packing string 15 is made of stretched polypropylene and has a width of 15.5 mm and a thickness of 0.6 mm. The coil 14 has a winding outer diameter of 440 mm and an inner diameter of 205.
mm, the axial length was 193 mm, and the weight was 11 kg.

The protective plate 11 is made of a plastic cardboard plate having a thickness of 5 mm, and has an outer diameter of 460 mm and an inner diameter of 21.
0 mm, the notch 13 has a width of 25 mm and a depth of 15
Eight (8) mm pieces were formed on the outer peripheral edge thereof at equal intervals. Protective plate 1
The overhanging dimension of the outer peripheral edge of No. 1 from the outer peripheral surface of the coil 14 was 10 mm. As the binding string 17, one having a width of 12 mm and a thickness of 0.6 mm was used, and it was hung on eight.

This coil body was freely dropped from the height of 30 cm with the outer peripheral surface of the coil 14 facing downward, and the change in the diameter (inner diameter) of the hollow portion 16 of the coil 14 was observed. 205mm is a minimum of 188mm,
The maximum change was 215 mm. This change value is the protective plate 1
It is considered that the plastic corrugated board of No. 1 was affected by the direction of the ribs and the direction of the drop, but such deformation would not cause any inconvenience for mounting on the automatic packing machine. Moreover, the amount of deformation was comparable to that of the coil body using a paper tube having a thickness of 5 mm as the core.

A compression test was conducted on this coil body by applying a compressive load to the outer peripheral surface of the coil 14. The compression strength was 136 kgf, and the coil body using a paper tube having a thickness of 5 mm as a core. Compressive strength at 148kg
It was almost the same as f. From this experiment, it has been proved that it has sufficient strength even when a large external force is applied, and that even if such a large external force is applied, defects such as deformation and mold deformation do not occur.

[0034]

As described above, in the coil body of the present invention, the coil and the protective plate are tightly bound by the binding cord, and the binding cord is not displaced during handling and is uniform. The tight bondage is maintained for a long time. Further, since the protective plate is in a state of being projected to the outside, the external force is less likely to directly act on the coil, and the deformation and damage of the coil can be prevented.

Further, since the protective plate is flat, it is convenient for storage and transportation and can be reused. Further, although it has the same mechanical strength as a coil body having a core such as a paper tube, this is not necessary, and there is an effect that procurement cost and disposal cost for the core can be saved.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an example of a protective plate of the present invention.

FIG. 2 is a schematic plan view showing a main part of a protective plate of the present invention.

FIG. 3 is a perspective view showing an example of a coil body of the present invention.

FIG. 4 is a schematic sectional view showing an example of a coil body of the present invention.

FIG. 5 is a perspective view showing a conventional coil body.

[Explanation of symbols]

11 ... Protective plate, 12 ... Center hole, 13 ... Notch, 13a ... Bottom part, 14 ... Coil, 15 ...
・ Packing string, 16 ... Hollow part, 17 ... Binding string, 1
8 ... Whole binding string.

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65D 71/04 B65B 27/06 B65D 59/00 B65D 85/02 B65D 85/67

Claims (8)

(57) [Claims] 1. A hollow formed by winding a packing string without a core.
-Shaped coil and abutting on both sides of this coil, center hole
A disc-shaped protective plate with a coil and these protective plates
It is used for a coil body consisting of multiple binding strings that are physically bound.
In the protection plate, a plurality of notches are formed on the outer periphery of the protection plate.
The outer peripheral edge of the protective plate is located outside the outer peripheral surface of the coil,
The bottom of the protective plate notch is more inward than the outer peripheral surface of the coil.
Position so that the ties can be hung on the notches in the protective plate
Protective plate characterized by becoming. 2. The inner peripheral edge is located outside the inner peripheral surface of the coil.
The protective plate according to claim 1, wherein the protective plate is provided. 3. The protective plate according to claim 1, wherein the protective plate is made of a plastic corrugated board. 4. A hollow coil formed by winding a packing string without a winding core , a disk-shaped protection plate that is in contact with both side surfaces of the coil and has a central hole, and these coils and the protection plate. It is a coil body consisting of a plurality of binding strings that tightly binds to each other, and a plurality of cuts are formed on the outer periphery of the protection plate, and the outer peripheral edge of the protection plate is located outside the outer peripheral surface of the coil, The bottom of the notch of the plate is located inside the outer peripheral surface of the coil,
A coil body in which a binding string is hung on a notch of the protective plate. 5. The coil body according to claim 4, wherein the inner peripheral edge of the protective plate is positioned outside the inner peripheral surface of the coil. 6. A tie string is hung around the outer peripheral surface of the coil.
The coil body according to claim 4 or 5, characterized in that: 7. A binding cord extends from the outer peripheral surface of the coil to the inner peripheral surface thereof.
6. The method according to claim 4, 5 or 6, characterized in that
Or a coil body according to item 6. 8. The packing cord and the binding cord are made of thermoplastic resin.
That it is a packing string to be attached to the automatic packing machine
The coil body according to claim 4, 5, 6, or 7.