JPH0669803B2 - Unit trode packing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a packing method for carrying cargo, and more particularly to a packing method for unitizing a large number of cargoes into a unit load.

[Conventional technology]

2. Description of the Related Art Conventionally, various cargo handling equipments and carriers have been used to rationalize operations such as loading, unloading, transfer, and storage of cargo. For example, a palletization system using a wooden or steel pallet and a forklift truck, or a sheet pallet (also referred to as a slip sheet) and a push-pull forklift truck has been widely adopted.

In the above pallet transportation, in order to improve transportation efficiency,
A so-called unit road is being promoted in which individual packages of a large number of packages are collectively handled.

The unit load method is to wrap a binding tape composed of a stretch film or a stretched tape to prevent the load from collapsing, or use a shrink film to pack the individual packages into a bag. Generally, a method of wrapping the product in a wrapping bag and wrapping it in a package is performed.

Compared to shrink-wrap packaging, in particular, the stretch-out packaging does not require a shrink-link device, etc., and can be continuously packaged, so that it is prized.

However, the conventional stretch packaging method covers the entire side surface of the load accumulated on the pallet placed on the turntable with the stretch film.

In such a conventional packaging method, it is convenient for preventing the collapse of the load, but on the contrary, it is troublesome at the time of unpacking and it is impossible to attach a label or change the label on the package after the stretch packaging, Alternatively, there is a problem that a large amount of stretch film is required.

[Problems to be solved by the invention]

The present invention has been made as a result of extensive studies in view of the above problems, and an object of the present invention is to save labor in a stretch film while ensuring safety such as prevention of collapse of cargo.

Another object is to provide a unit road packing method that enables rationalization of unpacking labor and labeling and changing of labels on packages.

[Means for solving problems]

The present invention is a packing method in which loads stacked in multiple stages on a pallet are unit-loaded with a film, stretch film, or tape. After wrapping the boundary between the pallet and the bottom load with the film, stretch film or tape pulled out from the roll through the roller, 2. While the load or film roll rotates 90 ° around the rotation axis of the turntable The film roll is raised to the boundary between the packages on the next upper stage, and about 1/3 to 1/10 of the height of the packages above and below the boundary between packages with the boundary as a boundary. Wrap a film, stretch film or tape,
3. Sequentially, while the load or film roll rotates 90 ° around the rotation axis of the turntable by the same operation, the film roll is raised to the boundary between the loads on the next higher stage, and at the boundary, Film over a range of about 1/3 to 1/10 of the height of the luggage above and below the boundary between each luggage,
It is a unit load packing method characterized by winding a stretch film or tape and winding it up to the top of the uppermost strip in a striped pattern.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

FIG. 1 shows a perspective view of an example of an apparatus for carrying out the present invention. In FIG. 1, a seat pallet 2 is placed on a turntable 1, and a large number of loads 3 having substantially the same height are piled on the turntable 1 so as to form a substantially rectangular parallelepiped as a whole. The stretch film 8 is pulled out from the film roll 4 through the rollers 5 and 5 ', and the end of the winding start is
When sandwiched between packages and fixed and the turntable is rotated, the film can be automatically wrapped in a band at a predetermined height while stretching. Film roll 4
Is attached to a film lifting plate 6 that can be moved up and down,
The elevating plate 6 can take an arbitrary height by a controller (not shown) in correlation with the rotation time of the turntable. At the time of packaging, the load is vertically pressed by a holding plate 7 operated by hydraulic pressure or a spring (not shown) to counter the horizontal tension at the time of packaging. By setting the rollers 5, 5'to different circumferential speeds, it is possible to generate a stretch on the film, save the film and bind the load.

FIG. 2 (a) is a side view showing an example of a packaging form in which a stretch film is wound in a stripe shape of the present invention,
FIG. 2 (b) is a side view showing a packaging form in which the conventional stretch film is completely wound.

Further, FIG. 2 (c) is a side development view of FIG. 2 (a).

FIG. 3 is a side development view showing the winding sequence of an embodiment of the present invention.

In Fig. 3, the stretch film is wound around the boundary between the pallet and the package, and the film is raised to the boundary between the first and second stages of the package while the turntable turns 90 °.

When the first and second stages of the package have been rolled up, the film roll is raised so that the film comes to the boundary between the second and third stages during the next 90 ° turn.

~ After that, wind it up to the top of the 4th step.

When you finish winding the top, wind it down as necessary.

As described above, in the present invention, by controlling the rotation speed of the turntable and the height of the lifting plate, it becomes possible to wind the boundary of the accumulated loads and the side faces of the loads in a stripe shape.

At this time, the film, the stretch film or the tape may be wrapped only at the boundary between the loads, but it is preferable that the films are continuously wrapped until one unit road is finished. This continuous wrapping can omit cutting for independent wrapping and operations such as holding the film, stretch film or tape at the start of wrapping, and can also enhance the effect of preventing load collapse.

Furthermore, although there is no load on the upper edge of the accumulated uppermost load, the film, stretch film or tape is wrapped around like the other boundaries, and the part of the film, stretch film or tape protruding on the upper edge is placed inside. It is preferable to prevent the load from collapsing by bending the load so as to cover the upper surface of the load.

The stripe interval differs depending on the type of baggage, the safety, the position where the label is attached, etc., and is not limited. A film, stretch film or tape is wound around about 1/3 to 1/10.

If the winding amount of the above-mentioned film, stretch film or tape is less than 1/10 of the height of the load, the effect of preventing the collapse of the load may be impaired, resulting in a safety problem. On the other hand, if the wrapping of the film, stretch film or tape exceeds 1/3 of the height of the baggage, it will be over-packed and the cost of the packaging material will increase, not only will it take time and effort when unpacking, Label changes,
It interferes with the application of labels.

The film, stretch film or tape used in the present invention is not particularly limited, but is preferably a homopolymer such as polyethylene, polypropylene or polybutene-1, ethylene, propylene, butene-1,4-methyl-pentene-1. .Alpha.-Olefin interpolymers such as hexene-1, copolymers such as ethylene-vinyl acetate copolymers, and olefin polymers such as mixtures thereof, single films, laminated films, or processed films thereof. (Stretched film, crosslinked film, etc.) and the like.

The width of the film, stretch film or tape used in the present invention is not particularly limited, but it is preferable to match the desired height for covering the boundaries between the above-mentioned loads with a small number of windings and for safety.

〔The invention's effect〕

According to the method of the present invention, a large number of integrated individual packages can be easily and unit-loaded with the minimum packaging material, and a unit-loaded package can be directly labeled or the label can be changed. Etc. are possible. In addition, the cost can be reduced because the unit packaging is made with the minimum packaging material, and the labor for unpacking can be greatly streamlined.

[Brief description of drawings]

FIG. 1 shows a perspective view of an example of an apparatus for carrying out the present invention,
FIG. 2 (a) is a side view showing an example of a packaging form in which the stripe film of the present invention is wound, and FIG. 2 (b) is a conventional stretch film wound entirely. FIG. 2C is a side view showing the attached packaging form, and FIG. 2C is a side development view of FIG. 2A of the present invention. FIG. 3 is a side development view showing the winding sequence which is an embodiment of the present invention. 1 …… Turntable, 2 …… Sheet pallet, 3 …… Luggage, 4 …… Film roll, 5,5 ′ …… Roller, 6 …… Lift plate, 7 …… Presser plate, 8 …… Stretch film, 9 ……boundary

Claims (1)

[Claims] 1. A packing method in which loads stacked in multiple stages on a pallet are unit-loaded with a film, a stretch film or a tape. 1. The loads stacked on a pallet can be placed on a turntable and moved up and down. After wrapping the boundary between the pallet and the bottom load with the film, stretch film or tape pulled out from the normal film roll through the roller, 2. The load or film roll rotates 90 ° around the rotation axis of the turntable. The film roll is raised to the boundary between the packages on the next upper stage in between, and about 1 / the height of the packages above and below the boundary between packages at the boundary.
Wrap the film, stretch film or tape over the range of 3 to 1/10, and 3. sequentially in the same operation while the load or film roll rotates 90 ° around the rotation axis of the turntable. Raise the film roll to the boundary between the packages, and use the film, stretch film or the range of about 1/3 to 1/10 of the height of the packages above and below the boundary between the packages. A unit load packing method that involves winding a tape and winding it up to the top of the top in a striped pattern.