JPH0350008Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for wrapping cargo using stretch film, and in particular to a portable pallet in which stretch film is manually stretched and wrapped around cargo loaded on a pallet. This invention relates to a hand-wound stretch film wrapping tool.

[Conventional technology]

As we enter the era of mass logistics, pallet transportation is expected to further expand as sheet pallets become more widespread.

An important issue in pallet transportation is preventing cargo from collapsing. Stretch packaging has traditionally been effective in preventing cargo from collapsing.

Pallet packaging is generally divided into shrink packaging and stretch packaging.

In the shrink packaging mentioned above, a shrink film bag made of polyethylene film or the like that shrinks when heated is placed over the packaged items loaded on the pallet, and then heat is applied to the bag to make it shrink, tightly wrapping the pallet and the packaged item. This method not only has the disadvantage of requiring heat to be applied to the package, but also has the problem of not being suitable for large-sized cargo.

On the other hand, stretch packaging is a method in which the cargo is placed on a turntable, tension is applied to the film that is fed out as the cargo rotates, and the cargo is wrapped in pallets using the stretched film. Since the pallet and pallet can be firmly and tightly integrated with stretch film, it is suitable for large cargo, and these days, most pallet packaging has generally adopted this method.

One feature of this stretch packaging is that it applies a brake to the original film to generate tension for stretching the film.This braking method includes, for example, an electromagnetic brake, a powder brake, and various other types of friction. Brake systems using bars are known.

Some of these include the Surf Ace brake system, in which a roller in contact with the surface of the film is braked by an electromagnetic brake or a powder brake, and the surf ace brake system, in which the film is braked by an electromagnetic brake or a powder brake attached to the winding core. This includes core braking methods that apply brakes on the contrary. Newer stretching methods include the roller stretch method, in which the stretched film is fed out between two rubber rollers that rotate at different speeds, and the friction bar method, in which the film is braked by passing through a braking bar. etc. are also being developed.

A typical packaging method is the so-called turntable method, in which stretching force is generated by rotating the cargo while the film is braked in various ways. A method has also been developed in which the pallet load does not need to be moved, and a robot with a built-in working will runs around the pallet load and winds up the film.

On the other hand, when classified from the viewpoint of how to wind the film, there are known methods such as a spiral type method in which the film of the same width is rolled while moving up and down, and a method in which the film width itself covers the entire side of the cargo.

Furthermore, if we classify the wrapping machines by type, there are standard models that insert the tip of the stretch film into the cargo placed on a turntable, press the start button, and complete automatic wrapping according to the set number of wraps, and those that use roller conveyors. There is a fully automatic type that stops the moving cargo at the center of the turntable, completes the wrapping according to the set number of wraps, cuts the film, seals the end of the film, and moves it downstream on a roller conveyor. There is.

[Problem that the invention attempts to solve]

It is clear from the above that all of the devices used in conventional stretch film packaging systems are of a fixed type, requiring the cargo itself to be transported to the device, and that the devices are large and complex, with accompanying equipment. The disadvantage was that the equipment cost was high.

[Purpose of this invention]

The purpose of the present invention is to provide a stretch film hand-wound packaging device that can stretch the film in the same way as conventional fixed-type stretch film packaging devices and that can provide the same binding force as fixed-type mechanical packaging. To provide a portable stretch film hand-wound packaging device which is extremely simple and inexpensive in structure and can be freely carried anywhere as needed.

[Means to solve the problem]

In the present invention, an upper disk and a lower disk are attached to both ends of the winding core of a stretch film roll, and a shaft is inserted in order from the lower disk to the upper disk side, and fixed to the lower end side of the shaft. A plate receives the lower disc, and a presser screwed onto the upper part of the shaft and freely removable and provided in the shape of a generally rotating body around the axis of the shaft rotatably holds the upper disc against the fixing plate. A handle is fixed to the lowermost end of the shaft, and after the handle extends in the radial direction of the stretch film from the lowermost end of the shaft, the stretch film roll is pressed in the lengthwise direction. To provide a hand-wound stretch film wrapping device, which is characterized in that the handle extends from the handle and is inclined toward the stretch film roll side, and a grip is provided at the tip of the handle.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic side sectional view of one embodiment of the present invention. Main body of stretch film hand-wound packaging device 1
consists of a part that adjusts the degree of rotation of a paper cylinder (core) 14 on which a stretch film 13 is wound to arbitrarily set the degree of stretching of the film, and a part that is a handle for holding the film in the hand. has been done.

As shown in FIG. 1, a lower disk 8 and an upper disk 9 are removably attached to both ends of the paper tube 14 and are slidably in contact with the end surfaces of the paper tube 14.
From the lower disk 8 slidingly in contact with the lower end end surface of 4,
A shaft 7, which is erected on the stand 2 and has a fixing plate 3 fixed to the lower end of the stand, is inserted into the paper cylinder 14.

At the center of the upper surface of the upper disk 9, there is a snap spring 10 and a washer 1 on the upper part of the shaft 7.
A presser 12 is disposed to be screwed onto the upper disk 9 through the washer 11, and when the presser 12 is tightened, the upper disk 9 is pressed toward the fixing plate 3 through the washer 11. The paper tube 14 is sandwiched and supported by the lower disk 8 in contact with the fixed plate 3.

The holding tool 12 is located on the axis of the shaft 7 as shown in FIG.
As will be described later, when gripping and holding this presser tool, it is designed so that the same gripping pattern can always be performed regardless of the rotation angle of the presser tool.

The paper tube 14 can be removed by removing the presser 12 from the shaft 7, removing the upper disk 9, and then pulling out the paper tube 14.

The strength of tightening by the fixing tool 12 becomes the strength of the force in the axial direction through the washer 11,
The degree of rotation of the paper tube during unwinding of the film can be adjusted by tightening the presser 12, and thereby the degree of stretching of the film 13 can be freely adjusted even during unwinding of the film.

As shown in FIG. 2, a thrust bearing 15 may be provided between the presser 12 and the washer 11, and the interposition of the thrust bearing 15 allows the presser 12 to be rotated more easily. In this way, the service life of the hand-wound packaging tool can be extended.

The fixed plate 3 has a rotation stopper pin 6,
The rotation stopper pin 6 is provided to fix the lower disk 8 to the fixing plate 3.

Further, a handle 4 is arranged between the fixed plate 3 and the stand 2. The handle 4 is fixed to at least one of the lowermost end of the shaft 7, the fixing plate 3, and the stand 2 by welding, and extends in the radial direction of the paper tube and then extends along the longitudinal direction of the paper tube. It is provided in a substantially L-shape that extends and slopes toward the shaft, and a grip 5 is provided at the tip.

In the present invention, the presser 12 is preferably constructed of a bolt or the like, although there is no particular limitation, such as a knob or handle that can be easily tightened manually.

The shaft 7 may be composed of a single shaft, but it may be composed of a plurality of adapters and/or threaded parts, and the length of the shaft 7 can be adjusted freely by adding adapters or by using the threaded parts. It is preferable that the configuration is such that it can be adjusted.

On the other hand, by making the handle 4 assembleable by screwing or the like, it can be easily stored in a container or the like, making transportation more convenient.

FIG. 2 is a partially enlarged sectional view of another embodiment of the present invention.

In the embodiment shown in FIG. 2, the shaft 7 is composed of a plurality of adapters 16 and/or threaded portions 17, and the shaft 7 is configured according to the length of the paper tube.
It was designed so that it could be added or adjusted in length.

Next, we will discuss the materials used for hand-wrapped packaging. One of the features of the hand-wound packaging device according to the present invention is that it is portable, so light materials are selected for each part. In addition, because the brake is applied to the stretch film roll to stretch the film and wrap it around the baggage, a material with high strength is selected in some areas. Any material may be used as long as it satisfies the above requirements. For example, iron such as stainless steel and steel, metals such as aluminum, aluminum alloy, and duralumin, plastics such as FRP resin and ABS resin,
Examples include wood.

[Effect]

Next, a packaging method using the hand-rolled packaging device of the present invention will be described. First, the film is attached, and in the process of wrapping the package, the paper tube and film roll are rotated and the film is fed out. At this time, the film is attached so that the rotation direction of the paper tube is counterclockwise. Next, hold the grip 5 of the handle 4 with your right hand and place the end of the stretch film between the parts of the baggage to be stretch-wrapped, grip the presser 12 with your left hand, and apply the stretch film to the side of the baggage. ,
Wrap it around.

As mentioned above and as shown in FIG. 1, since the handle 4 is inclined toward the shaft 7, the grip 5 should be held so that the shaft stands vertically (i.e., the stretch film roll stands up). It has a good grip on the hand when gripped, making it easy to maintain the stretch film roll in a standing position, and also maintains the standing position even when the stretch film is being strongly stretched and unwound. This makes it possible to eliminate large variations in the degree of stretching in the width direction of the stretch film.

In the above case, since the paper cylinder also rotates counterclockwise, this is the direction in which the screw of the presser 12 loosens, but in other words, it is the direction in which it is easy to retighten the screw with the knob or handle held in the left hand. , which means the direction in which the brake applied to the film roll is easily applied, and the degree of stretching of the film can be adjusted as appropriate by adjusting the screw of the presser 12.

Therefore, it is preferable to mount the film in such a way that the rotating direction of the paper tube is in the direction in which the presser 12 is loosened.

As an example of how to stretch a film, in section A shown in Figure 3, after the leading edge of the film is caught in the cargo, the film is let out from the roll in a free state without applying a brake to the film roll, and in section B In this section, the brakes are applied to the film roll, and the film is applied to the corner of the cargo while being stretched. After that, wrapping is performed according to the desired wrapping pattern by repeating the above operations.

[Effect of idea]

The hand-wrapped packaging device according to the present invention is extremely lightweight, so it can be carried anywhere as needed. For example, the film specification is 25μ x 350mm x 250
The weight of the main body in case of m is only 1.4Kg,
Even when the film is attached, the weight is only 4.0kg.
Therefore, the device cost itself is extremely low.

In addition, stainless steel, aluminum alloy, FRP resin, etc. are used only in the parts that require the most strength.
By using materials such as ABS resin, it is possible to create something that is lightweight and strong enough for general purposes.

Furthermore, since the structure of the present invention is extremely simple, there are no failure points and maintenance is easy. On the other hand, since the upper disk and the lower disk are in sliding contact with the end surface of the paper tube, the axial force due to the rotating operation of the presser is applied evenly to the end surface of the paper tube, causing digging into the paper tube. You can make fine adjustments to the rotation of the paper tube without having to do so. This makes it easier to judge the tightness while holding the presser from the positional relationship with the grip on the handle, and there is no need to change the grip of the presser when adjusting the tightening level. The degree of stretching can be adjusted while unwinding. Furthermore, as shown in FIG. 1, since the handle is slanted toward the stretch film roll, it is easy to grip the handle, making it easy to maintain the stretch film roll in its upright position.

As described above, the manual wrapping device is easy to operate and can be wrapped even by non-experts. Furthermore, if the embodiment shown in Fig. 2 is adopted, by attaching and removing the adapter from the shaft 7, the entire hand-wound package can be replaced not only for the usual 350 mm film width, but also for film widths of 300 mm and 500 mm. It has the feature that it can be used without

Furthermore, by a simple operation of gripping the grip 5 with the right hand and gripping the fixture 12 with the left hand, the fixture 12 can be
The screws can be adjusted freely even during the wrapping operation, and the appropriate degree of film stretching can be obtained for each section of the wrapping pattern. It has the characteristic of providing cohesive strength.

It should be noted that the above-mentioned embodiments are merely for illustrative purposes and may be modified in various ways without departing from the spirit and scope of the present invention as disclosed herein and as stated in the above-mentioned claims for utility model registration. It is something.

[Brief explanation of the drawing]

Fig. 1 is a schematic side sectional view showing one embodiment of the present invention, Fig. 2 is a partially enlarged sectional view of another embodiment of the invention, and Fig. 3 is a baggage package using the hand-wound packaging device of the present invention. A schematic diagram of the wrapping method is shown. 1...Body, 2...Stand, 3...Fixing plate,
4... Handle, 5... Grip, 6... Rotating pin, 7... Shaft, 8... Lower disc, 9...
...Upper disc, 10...Snat spring, 11...
Washer, 12... Presser, 13... Stretch film roll, 14... Paper tube (core), 1
5...Thrust bearing, 16...Adapter, 17...Threaded part.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An upper disk and a lower disk are attached to both ends of the winding core of a stretch film roll, and a shaft is inserted in order from the lower disk side to the upper disk side. A fixed plate fixed to the lower end side of the shaft receives the lower disk, and a presser screwed onto the upper end of the shaft and provided in the shape of a substantially rotating body about the axis of the shaft, which can be freely removed, rotates. after the upper disk is pressed toward the fixed plate side, and a handle is fixed to the lowermost end of the shaft, and the handle extends in the radial direction of the stretch film from the lowermost end side of the shaft. , a stretch film hand-wound packaging device, which extends in the length direction of the stretch film roll, is further inclined toward the stretch film roll side, and has a grip provided at the tip of the handle. (2) The shaft has a plurality of adapters and/or
or a threaded portion, and the length of the shaft is adjustable, according to claim 1. (3) The stretch film hand-wound packaging device according to claim 1 or 2, which is provided with a thrust bearing interposed with a washer and a snap spring between the fixing device and the upper disk. .