JP2001213404A - Packaging method and packaging machine using film-like packaging material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging method using a film-like packaging material wherein the packaging material can be prevented from being broken during packaging and transportation and to provide a packaging machine wherein the packaging method is used. SOLUTION: The packaging machine includes loop bodies D which form an endless track, a shuttle E which holds a film-like packaging material G passing around the bodies D and which includes a packaging material feed means which can draw out the material G, and a support means F which supports and controls materials to be packaged. As a means to fold back the opposite edges of the material G in the width direction thereof, folding-back members 41, 42 are respectively disposed on the left and right sides of the material G so as to be spaced from each other by a distance slightly smaller than the width of the material G to fold back the opposite edges of the material G during a step wherein the material G is drawn out in the shuttle E.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging method using a film-like packaging material, and more particularly to a method and a packaging machine for strengthening both edges of a long film in the width direction.

[0002]

2. Description of the Related Art Conventionally, for the purpose of protecting a packaged object,
It is generally practiced to wrap with a film, and especially for a large annular cylinder such as a steel strip coil, a method and a packaging machine for wrapping the film by winding the film from the outer surface to the inner peripheral surface are adopted. (JP-A-5-294314).

[0003] However, the film has a property that its edge is easily torn, for example, when the edge of the film comes into contact with a sharp or sharp point in a packaged object or the like.
There was a defect that the film was torn from the contact point. Therefore, in some cases, the edge of the film may be torn during the packaging, thereby hindering the packaging operation, and the edge of the film may be torn during the transport, causing the packaging to be unraveled.

[0004] In particular, in the case of packaging a large annular cylinder such as a steel strip coil as described above, when the film approaches the angular edge of the inner peripheral surface of the cylinder, the width of the film in the width direction of the film is reduced. Both edges may come into contact with the corners and tear. Moreover, in the process of manufacturing the steel strip,
A "burr" is formed at the cutting edges on both sides of the strip, and when the strip is wound in a coil shape, the "burr" is usually wound inward. Therefore, this "burr" is present at the corner of the inner peripheral surface of the cylindrical body, so that when the film approaches the corner of the inner peripheral surface of the cylindrical body, both ends in the width direction of the film are displaced. The edge often touched this "burred" corner and was torn. Therefore, in order to prevent the film from being broken as described above, it is general to arrange the protective frame 101 at the corner of the packaged object 100 as shown in FIG.

[0005]

However, the above-mentioned protective frame has the disadvantage that it is troublesome to dispose it and the packaging cost is high.

Accordingly, the present inventors have conducted intensive studies and have developed a film packaging method and a film packaging method which do not require the protective frame as described above and which can prevent the packaging material from being broken during packaging and transportation. A achievable packaging machine was developed.

[0007]

According to the present invention, there is provided a packaging method using a film-like packaging material, characterized in that a long film-like packaging material is folded at both edges in the width direction to perform packaging. By adopting such a method, the strength is increased because both ears of the long film-shaped packaging material are in a state in which the edges are folded back.

[0008] Further, a packaging machine using a film-like packaging material according to the present invention is characterized in that it has folding means capable of folding both edges in the width direction of the long film-like packaging material, Specifically, a shuttle provided with a loop body forming an endless track, a packaging material feeding means which circulates around the loop body, holds the film-shaped packaging material, and allows the film-shaped packaging material to be drawn out, It consists of supporting means for supporting and controlling the package, and as means for folding back both edges in the width direction of the film-like packaging material, during the process of drawing out the film-like packaging material in the shuttle, the width of the film-like packaging material is reduced. Folded members are arranged on the left and right sides of the film-like packaging material at a slightly narrow interval. Due to such a configuration, by the folding member,
Since the long film-like packaging material is pulled out from the shuttle while forming both ears with both edges folded back, the packaged object is packaged by the film-like packaging material with both ears reinforced. Become.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A film packaging method and a packaging machine according to the present invention will be described below in detail with reference to the accompanying drawings.

[Packing Method] FIG. 1 is a perspective view showing a packing method using a film-like packaging material according to the present invention, wherein A1 is a rectangular column-shaped object to be packaged in which four corners 4 are square. Denotes a film roll around which the long film 1 is wound. Then, the long film 1 is formed with ears 3 having both edges 2 turned back to the back after being pulled out from the roll B. Accordingly, the ears 3 have increased strength against breakage because the film is doubled or more. When the film 1 having the ears 3 with both edges 2 folded in this way is wound around the above-mentioned packaged object A1,
Even if the corner 4 of the packaged object A1 is angular, the two ears do not judge during the packaging and during the transportation after the packaging. In the above description, the prismatic packaged object has been described as an example, but it goes without saying that the present invention is effective for a packaged object having a corner portion.

[Packaging Machine] Next, a packaging machine for a film-like packaging material using the above-described method for packaging a film-like packaging material will be described in detail with reference to FIGS.

A packaging machine C shown in FIG. 2 comprises a loop body D composed of a left beam 11 and a right beam 12, a shuttle E circling the loop body, and a supporting means F for supporting a packaged object A2. Is done.

That is, the left beam 11 and the right beam 12 which constitute the loop body D are in the form of semicircles which are opposed to each other, and the columns 13 are provided on the left and right sides.
The two beams 11, 12 are suspended by a horizontal rod portion 14 supported by a, 13b so as to slide to the left and right, respectively, to approach and separate from each other. These two beams 11, 12 are arranged in the same vertical plane, and form a loop body D in a state of being close to each other. As shown in FIG. 3, the left and right beams 11, 12 are T-shaped rails that are continuous with each other in a close state,
It comprises a vertical rail 15 and a horizontal rail 16. A rack 17 is formed in the center of the inner peripheral surface of the horizontal rail 16 in the longitudinal direction, and is engaged with a pinion 26 of a shuttle E described later.

Hereinafter, the shuttle E will be described with reference to FIGS.

The shuttle E orbits on the orbit along the inner peripheral surface of the loop body D, that is, on the horizontal rail 16 of the left and right beams 11 and 12. This shuttle E is provided with two side plates 21 fixed at a fixed interval, each of which has two pairs of inner races 22 running on the inner surface of the horizontal rail 16 and a horizontal rail 22. Two pairs of outer races 23 running on the outer surface of the horizontal rail 16 and two pairs of side races 24 running on the side surface of the horizontal rail 16 are rotatably mounted. Of these rings,
The inner race 22 and the outer race 23 are rotatably mounted on an axle extending from one side plate 21 to the other side plate 21, and the side race 24 is mounted on a bracket fixed to each side plate. It is mounted. As a whole, these orbital rings hold the shuttle E movably on a horizontal rail 16 which is a T-shaped endless orbit and can orbit around the orbit.

The shuttle E is a self-propelled type driven by a motor 25.
1 and attached to the pinion 26 via known means.
The pinion 26 is rotatably mounted on the axle of one inner race, and is engaged with a rack 17 formed over the entire length inside the horizontal rail 16. Electric power is supplied to the motor 25 from the conductors 18 arranged along the side surfaces of the vertical rails 15 of the left and right beams 11 and 12, and the contacts 2 leading to the motor 25 provided on the shuttle E
The power is supplied by contact with 8.

Further, the shuttle E is provided with a spool holder 27.
Stretch wrapping film G made of synthetic resin
Are supported by the holder 27, and six fixed guide rollers 31 to 3 disposed on the shuttle E are provided.
The film G is pulled out by five and two pre-stretch rollers 36 and 37 and two swing guide rollers 38 and 39 responding to the tension.

The pre-stretch rollers 36 and 37 cooperate with the fixed guide roller 31 to perform an initial stretching action on the film G coming out of the roll H. These rollers 3
The conditions relating to the curved peripheral surfaces of 6, 37 are adjusted by a known method so that the friction between the surface and the film G is appropriately and sufficiently strong. Further, one pre-stretch roller 37 is configured to have a higher peripheral speed than the other pre-stretch roller 36, so that the film G is always stretched when passing through the group of rollers. Then, these rollers apply a braking action to the film G, so that the film G in the package is always kept in a tensioned state. The rollers 38 and 39 are urged in a direction away from the other rollers 32 to 34 (arrows a and b) by a known means such as a spring, to maintain a constant tension applied to the film G, and to reduce the slack in the film G. It swings in the horizontal direction so as not to occur.

In addition to the rollers 31 to 39, the shuttle E is provided with a folding member for folding both edges of the film G, for example, folding rollers 41 and 42, as shown in FIGS. Have been. The folding roller 4
Reference numerals 1 and 42 denote a pair of rollers which are rotatably supported on both sides of the film G about a vertical rotation axis, and are arranged at intervals slightly smaller than the width of the film G. When the film G passes through the rollers 41 and 42, both edges of the film G are moved inward, and a folded portion G1 is formed, which is folded twice or more. The rollers 41 and 42 are disposed after passing through the pre-stretch rollers 36 and 37 and before passing through the fixed guide roller 35 which is the final roller. In order to fix the folded portion G1, it is preferable to arrange at a point as soon as possible after passing through the pre-stretch rollers 36 and 37. In the present embodiment, it is preferable to pass through the pre-stretch rollers 36 and 37,
Immediately after passing through the fixed guide roller 32, the folding rollers 41 and 42 are arranged.

As shown in FIG. 2, a support means F for supporting and controlling the packaged object is disposed below the loop body D. The support means F is composed of two support rollers 51 arranged close to each other.
1 is placed on the packaged object A2.
2 is supported. And these two support rollers 51
Are configured to rotate in the same direction, so that the rotation direction and the rotation speed can be controlled. In the present embodiment, the case of the strip steel coil described above as the wrapped body A2 will be described. However, the wrapped body is not limited to this. It is sufficient that the portion to be wrapped, which is located in D, rotates or translates in a direction intersecting with the loop body D, that is, the beams 11, 12.

In the operation of the packaging machine, first, the left and right beams 11 and 12 of the loop body D are separated from each other left and right (arrows b and c), and the supporting means F is provided between the left and right beams. Steel coil A which is the packaged object A2
2 is placed, and the left and right beams are closed by passing the left and right beams through the hole 52 of the coil A2. Then, the leading end of the film G is pulled out from the shuttle E and fixed to an appropriate position on the strip coil A2 or the packaging device. Then, the shuttle E circulates along the loop body D. This shuttle E
The supporting means F is rotated at a low speed along with the orbiting operation of, and the steel strip coil A2 is rotated at a low speed by the support roller 51.
Then, the film G is wound from the outer surface of the steel strip coil through the center hole, and is continuously wound in an overlapping shape with the rotation of the steel strip coil A2.
2 is covered with a film G. During the packaging, the steel strip coil A where the breakage of the film G occurs most frequently.
The peripheral edge 52a of the second hole is in contact with the both ears G1 in which the edge of the film G is folded back more than twice and the strength is increased.
Breakage can be prevented.

The present invention is not limited to the above embodiments, but includes a wide variety of modifications without departing from the spirit of the present invention.

[0023]

According to the present invention, the packaging method using the film packaging material is characterized in that the long film packaging material is folded back at both edges in the width direction. By adopting such a method, both ears of the long film-shaped packaging material are in a state in which the edges are folded back, so that the strength is increased, and it is possible to prevent the packaging material from being broken during packaging and transportation.

[0024] Further, the packaging machine using the film-like packaging material according to the present invention is characterized in that it has folding means capable of folding both edges in the width direction of the long film-like packaging material, Specifically, a loop provided with a loop body forming an endless track, a shuttle provided around the endless track, and provided with packaging material supply means capable of holding the film-shaped packaging material and allowing the film-shaped packaging material to be drawn out; It consists of supporting means for supporting and controlling the package, and as means for folding back both edges in the width direction of the film-like packaging material, during the process of drawing out the film-like packaging material in the shuttle, the width of the film-like packaging material is reduced. Folded members are arranged on the left and right sides of the film-like packaging material at a slightly narrow interval. Due to such a configuration, by the folding member,
Since the long film-like packaging material is pulled out from the shuttle while forming both ears with both edges folded back, the packaged object is packaged by the film-like packaging material with both ears reinforced. Therefore, breakage of the packaging material due to tearing of both ears during packaging and transportation can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a packaging method of the present invention.

FIG. 2 is a schematic front view of the packaging machine of the present invention.

FIG. 3 is a partially cutaway perspective view showing an engagement state between a loop body D and a shuttle E;

FIG. 4 is a schematic front view of the shuttle E.

FIG. 5 is a schematic plan view of the shuttle E.

FIG. 6 is a schematic left side view of the shuttle E.

FIG. 7A is a schematic plan view showing the operation of a folding roller, and FIG. 7B is a schematic side view thereof.

FIG. 8 is a perspective view showing a conventional example.

[Explanation of symbols]

 A1 Packaged object (prismatic body) A2 Packaged object (strip steel coil) B Film roll 1 Long film 2 Edge 3 of long film 1 Ear 4 Corner of packaged object A1 C Packaging machine D Loop body E Shuttle F Support means for packaged object A2 G Stretch wrapping film G1 Folded portion H Roll 11 Left beam 12 Right beam 13a, 13b Support 14 Horizontal rod 15 Vertical rail 16 Horizontal rail 17 Rack 18 Conductor 21 Side plate 22 Inner raceway 23 Outer race ring 24 Side race ring 25 Motor 26 Pinion 27 Spool holder 28 Contact point 31-35 Fixed guide roller 36, 37 Pre-stretch roller 38, 39 Swing guide roller 41, 42 Folding roller 51 Supporting roller 52 For band steel coil A2 Hole 52a Peripheral edge of hole 52 of strip steel coil A2

Claims (3)

[Claims] 1. A packaging method using a film-like packaging material, wherein both sides of the long film-like packaging material in the width direction are folded back for packaging. 2. A packaging machine using a film-like packaging material, comprising a folding means capable of folding both edges in the width direction of the long film-like packaging material. 3. A shuttle provided with a loop body forming an endless track, a shuttle provided around the loop body, holding a film-like packaging material and allowing the film-like packaging material to be pulled out, and a shuttle. A means for supporting and controlling the package, as means for folding back both edges in the width direction of the film-shaped packaging material, during the process of drawing out the film-shaped packaging material in the shuttle, the width of the film-shaped packaging material is reduced. 3. The packaging machine according to claim 2, wherein folded members are disposed on the left and right sides of the film-shaped packaging material at a slightly narrow interval.