JPH0419004Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is a method for rolling a continuous thin film product such as a plastic bag or paper towel, which is made into a continuous strip with weak breaking lines such as perforations at each length position of the unit of use. A roll holder supports a roll 1 as shown in FIG. 5 in a state convenient for cutting and using each usage unit of thin film product 3a, and in particular, a roll holder that supports the continuous thin film product 3 every time one usage unit of thin film product 3a is cut out. 1 usage unit (1
This relates to an automatic feed-out type roll holder that automatically feeds out the length of the continuous thin film product 3 by a motor drive, and has been improved to have a configuration that allows the continuous thin film product 3 to be freely fed not only downward, but also sideways and upwards. This invention relates to a self-feeding roll holder.

Prior Art For example, an automatic feed-out type roll holder 4 described in Japanese Utility Model Publication No. 61-6077 rotates a roll 1 wound with a continuous thin film product 3 through its core 2, as schematically shown in FIG. Support freely. A pair of feed rollers 6 and 7 are provided for feeding out the continuous thin film product 3 of the roll 1, and the feed roller 6 is rotationally driven by a motor 14.
The motor 14 is controlled through a detector 16 which detects the presence or absence of the continuous thin film product 3 being fed out ahead of the feed rollers 6,7. That is, when one usage unit of the thin film product 3a of the continuous thin film product 3 is cut out,
This fact is detected by the detector 16, and the motor 14 is driven and controlled by the detection signal to feed out the continuous thin film product 3 to a length corresponding to one usage unit.

On the other hand, the user of the thin film product 3a grasps with his hands approximately the central portion of the tip of the continuous thin film product 3 that has been fed forward from the pair of feed rollers 6 and 7, and pulls it strongly.
Then, the break line 3b located on the front side of the feed rollers 6, 7 is broken, and one thin film product (such as a plastic bag) 3a can be cut out and used.

Problems to be Solved by the Present Invention () In the case of the above-mentioned self-feeding roll holder, the continuous thin film product 3 fed out by the feed rollers 6 and 7 hangs vertically downward.

Therefore, for convenience in cutting and using the thin film product 3a, the roll holder 4 is placed, for example, on the top plate 8 of a baggage stand provided next to the exit of the checkout area of a store for shoppers to refill their shopping bags with products. There was no other choice but to set it upright and use it.
Therefore, the effective usable area of the top plate 8 is limited by the space occupied by the roll holder 4, making it difficult for shoppers to find a place. Another problem is that the presence of the roll holder 4 is very unsightly and detracts from the aesthetics of the store.

() Although the roll holder 4 is generally installed and used indoors in shops, etc.,
Conditioned air for heating and cooling is flowing inside the room with considerable force. In addition, it is often installed and used outdoors, and for this reason, the feed roller 6,
The continuous thin film product 3, which is sent out downward at step 7 and hangs down, is fluctuated by the wind and cannot be fixed in position, so that it is often difficult to pick it up by hand. In addition, the continuous thin film product 3 made of synthetic resin is usually charged with static electricity, so when it comes close to a metal frame, cover, or roll 1, it is attracted to the product and sticks tightly, making it difficult to use. ing.

Means for Solving the Problems As a means for solving the problems of the prior art, preferred embodiments of the automatic feeding roll holder according to this invention are shown in FIGS. 1 to 4 of the drawings. A continuous thin film product 3 that is used by cutting off the break line 3b such as a perforation made at the position of each usage unit length.
is provided with a rotatable support for the roll 1 wound thereon, and includes a pair of feed rollers 6 and 7 for feeding out the continuous thin film product 3 of the roll 1.
The motor 14 that rotates the continuous thin film product 3 fed out by the feed rollers 6 and 7 for one unit of use 3
In an automatic feed-out type roll holder configured to be automatically controlled to feed out the length of one usage unit each time a is cut, a roller is placed at a position on the forward side of a pair of feed rollers 6 and 7. Continuous thin film product 3
A guide 5 is provided which guides the continuous thin film product 3.
It was formed as a pool portion 5b. Further, the tip exit portion of the guide 5 is closed and formed into a stopper portion 5c, and the tip portion of the continuous thin film product 3 is formed in a shape and size suitable for manually picking and pulling out the tip portion of the continuous thin film product 3 at approximately the center of the stopper portion 5c. A cutout outlet 5d was formed.

Function The continuous thin film product 3 fed out by the pair of feed rollers 6 and 7 is guided along the guide 5 by the so-called stiffness of the thin film itself. Therefore, by arranging the rollers 6, 7 and the guide 5 vertically upwards, the continuous thin film product 3 is guided upwards. Similarly, if the rollers 6, 7 and the guides 5 are arranged laterally, diagonally or downwardly, the continuous thin film product 3 is tightly guided laterally or diagonally or downwardly.

The leading end of the continuous thin film product 3 guided by the guide 5 as described above reaches the stopper part 5c that closes the leading end outlet part of the guide 5, and is stopped by hitting the stopper part 5c. Continued delivery roller 6,
7 sends out the continuous thin film product 3 for a length corresponding to one usage unit, and the continuous thin film product 3 is pooled in a folded state within the pool portion 5b of the guide 5 which has an originally expanded shape. Therefore, continuous thin film product 3 is 1
Although the guide 5 is sent out in units of length, the length H (FIG. 2) of the guide 5 is quite short and is sufficient for the purpose.

The user can cut out and use one unit of the thin film product 3a by pinching and pulling out the tip of the continuous thin film product 3, which is located at the outlet 5d of the guide 5. Therefore, the entire structure of this roll holder is attached to the lower side of the top plate 8 of a soccer table, for example, and the installation state is such that only the outlet 5d of the guide 5 is exposed on the top plate 8 (for example, as shown in FIG. , Fig. 2).

When the user cuts out one sheet of thin film product 3a and uses it, the motor 14 rotates the feed rollers 6 and 7 to feed the continuous thin film product 3 a length corresponding to one usage unit, and the tip of the continuous thin film product 3 is moved to the stop of the guide 5. Part 5
It is brought into contact with C and exposed through the outlet 5d, waiting for the next use.

Embodiment Next, an embodiment shown in FIG. 1 and subsequent drawings will be described.

FIGS. 1 and 2 are conceptual diagrams showing the overall structure of a self-feeding roll holder, which is a first embodiment of this invention, with the frame structure omitted.

As shown in FIG. 5, a roll 1 in which a continuous thin film product 3 is wound around a core 2 is provided with a core 2 (or a core passed through the core 2) at the lowest position, which is exactly opposite to the conventional example shown in FIG. It is removably and rotatably supported via a rod. Incidentally, the continuous thin film product 3 has perforations 3b as break lines and seal lines 3c as the bottom of the bag at positions for each unit length in the longitudinal direction of a plastic film extruded into a tube shape.
A pair of plastic bags are applied in parallel to form a continuous belt-like plastic bag.

A pair of feed rollers 6 and 7 are installed at a position slightly above the roll 1 to pinch the continuous thin film product 3 pulled out from the roll 1 and feed it out. Further, a motor 14 is installed to rotate one of the rollers 6 via a chain 13.

At a position slightly above the feed rollers 6 and 7, there is a pair of light emitting tube 16 and light receiving tube 16', which are non-contact type detectors that detect the presence or absence of the continuous thin film product 3 and control the drive of the motor 14 based on the detection signal. is set up.

In addition, as the non-contact type detector, a capacitance type proximity switch, an ultrasonic switch, etc. can also be used.

It is positioned slightly above the light emitting tube 16 and the light receiving tube 16' and is partially exposed on the top plate 8 of the support stand, and the destination of the continuous thin film product 3 sent upward by the feed rollers 6 and 7 is determined. A guide 5 for guiding is installed. This guide 5 is formed to have a horizontal dimension slightly larger than the width dimension of the continuous thin film product 3 (FIG. 2). The longitudinal cross-sectional shape of the guide 5 is such that approximately half of the front (upper) side is formed into a narrow parallel portion 5a to such an extent that the continuous thin film product 3 does not interfere with the entry and forward movement of the continuous thin film product 3. On the other hand, the front side (lower side)
Approximately half of the portion has a flattened shape that widens downward in a trumpet shape, and this portion is formed in the pool portion 5b of the continuous thin film product 3. Further, the tip exit portion of this guide 5, that is, the upper end portion of the narrow parallel portion 5a, is completely closed so that the continuous thin film product 3
It is formed in a stopper part 5c that stops the tip of. Approximately at the center of the stopper part 5c, there is a cutout opening 5d having a size and shape suitable for the user to manually pick up and pull out the tip of the continuous thin film product 3 in the guide 5. It is formed.

Therefore, the continuous thin film product 3 sent out by the pair of feed rollers 6 and 7 rises almost vertically using its own strength, and first reaches the wide-mouthed pool portion 5 of the guide 5.
Enter from b, go through it, and then go to the narrow parallel part 5.
a, and its upper end meets the stopper part 5 of the closed tip (upper end) exit part of the guide 5.
It comes to a stop when it hits point c. However, the continuous thin film product 3 continues to be fed out by a length corresponding to one usage unit. The continuous thin film product 3 is pooled in a folded state within the originally expanded pool portion 5d, allowing a length corresponding to one usage unit to be sent out.

Therefore, even if the length of the continuous thin film product 3 for one usage unit is about 30 cm, the actual height H of the guide 5
(Figure 2), a length of about 5 to 7 cm is sufficient.

Thus, the tip of the continuous thin film product 3 is connected to the guide 5.
Since the user waits for use in a state where the guide 5 hits the stopper part 5c and is restrained, there is no possibility that the user will move around due to the outdoor wind or the flow of air conditioned air inside the room. By inserting your fingers into the hole and pinching it, you can easily grasp it and pull it out.

When the user grasps approximately the center of the tip of the continuous thin film product 3 that is peeking into the outlet 5d of the guide 5 with his/her hand and pulls it out, the tensile force strongly pinches the continuous thin film product 3 and stops the rotation. It acts between the feed rollers 6 and 7, and acts on the perforation 3b located on the front side of the feed rollers 6 and 7. As a result, the perforation 3b is broken by the same tensile force, and the user can cut out the thin film product 3a one by one and use it.

When one thin film product 3a is cut out and used, the light emitting tube 16 and the light receiving tube 16' detect that the continuous thin film product 3 is no longer present at the light emitting position, and the motor is activated based on the detection signal. 14 is started. The motor 14 operates for a time preset by a timer (not shown) in the control circuit, feeds the continuous thin film product 3 by a length of one usage unit by a pair of feed rollers 6 and 7, and then automatically stops.

When the motor 14 stops, the perforation 3b is always adjusted to be located between the pair of feed rollers 6, 7 and the light projection position of the arc tube 16.

By the way, in the case of this roll holder, guide 5
is installed on the top plate 8 of a so-called baggage stand on which shoppers leave the checkout counter and refill their products into shopping bags or the like in a store, so that at least only the outlet 5d is slightly exposed. In other words, the overall structure of this roll holder (the above-mentioned components and the roll 1) is installed in such a way that it hangs from the bottom of the top plate 8 of the soccer stand by a frame (not shown) attached to the bottom of the top plate 8. It is said that it is built into the Satsuka stand. Therefore, almost the entire surface of the top plate 8 of the shopping stand can be effectively used as a stand for shoppers to refill purchased products into shopping bags.

Different Embodiments Although the guide 5 in the above embodiments is formed of a plate material such as metal, plastic, wood, or cardboard, the guide 5 is not limited to this. As illustrated in FIG. 3, a guide 5' made of wires or bars assembled in a vertical and horizontal lattice pattern or in a striped pattern with only vertical lines can be used in the same way.

Alternatively, the guide 5 or 5' may be subjected to antistatic treatment, such as grounding or coating with an antistatic agent.

2nd Embodiment The roll holder shown in FIG.
It is characterized by a configuration in which an enlarged diameter portion 9 is provided that is thicker by about 0.5 mm.

The feed rollers 6 and 7 are made of an elastic material such as rubber or synthetic resin, and the continuous thin film product 3 passing between the pair of feed rollers 6 and 7 is separated from the other constant diameter portion 10 by the expanded diameter portion 9. It is said to be a stronger grip. The other constant diameter portions 10 are configured to restrain the continuous thin film product 3 to the extent that it does not wrinkle toward the center (or to the width) and to hold the continuous thin film product 3 relatively lightly to the extent that the shape is adjusted.

The significance of this example is as follows.

Continuous thin film product 3 is made of high-density polyethylene with a thickness of about 0.008 mm, and the width as a plastic bag is 200 mm.
mm, the cut length of perforation 3b is usually 1.7 mm, and the length of the connecting part is about 0.5 mm. in this case,
The force required to rupture the continuous thin film product 3 by pulling it evenly over the entire length of the perforation 3b is approximately 9.1 kg.
It also becomes. However, if the above-mentioned expanded diameter portion 9 is formed on the feed roller 6, the tensile force when the tip of the continuous thin film product 3 is pinched and pulled is due to the expanded diameter portion 9.
Concentrate toward the center of perforation 3b.
A 20mm area is first broken. This is because there is a perforation 3 in the 20 mm wide area where the expanded diameter part 9 is formed.
This is because there are only nine joints (b) in total, and the total cross-sectional area of the joints is only ^0.09mm2 , and the force required to break them is as small as 0.819Kg. .

Therefore, if the continuous thin film product 3 is pulled with a force of about 1 kg, even if the margin is estimated, the central portion of the perforation 3b will be surely and easily broken immediately.

In this way, when the central part of the perforation 3b is broken by the tensile force concentrated toward the enlarged diameter part 9 of the feed roller 6, the perforations 3b at both ends of the broken part are subsequently broken.
This is a so-called tearing phenomenon in which the joints that form the 3b are broken one by one, and the perforation 3b can be quickly and completely broken with a small tensile force.

Although it is most preferable to provide the expanded diameter portion 9 of the feed roller 6 at the central position as shown in the illustrated example, a plurality of expanded diameter portions 9 may also be provided at positions near both ends of the continuous thin film product 3 in the width direction.

If the width of the expanded diameter portion 9 is too wide, the degree of concentration of tensile force will decrease, and the breaking performance of the thin film product 3a will deteriorate. However, if it is too narrow, on the other hand, there is a risk of scratches such as streaks on the continuous thin film product 3, so it is better to design the width to be appropriate depending on the material and properties of the product 3a.

Different Embodiments Each of the embodiments described above is different from the guide 5 or 5'.
is located at the top and the continuous thin film product 3 is fed vertically upward, but this is not the case. For example, by keeping the relative arrangement of each component shown in FIG. 1 as it is, and turning the entire body at an arbitrary angle around the center of the roll 1 as the center of rotation to bring it into an arbitrary desired orientation, the continuous thin film product 3 can be turned diagonally upward. , or directly sideways, diagonally downward, or vertically downward.

Effects of the present invention As described above in detail in conjunction with the embodiments, the automatic feed-out type roll holder according to this invention uses the guide 5 to guide the destination of the continuous thin film product 3 sent out by the feed rollers 6 and 7. Since the tip is restrained in contact with the stopper portion 5c and properly regulated in a fixed position, it is easy for the user to hold it in his/her hand, and it is convenient for cutting and using the thin film product 3a.

Moreover, the continuous thin film product 3 sent out by the feed rollers 6 and 7 is
The roll holder can be fed out in any 360° direction on a vertical plane depending on the setting angle, and this roll holder is flexible enough to be installed and used in accordance with the conditions of the installation location. For example, if the continuous thin film product 3 is installed under the top plate 8 of the support stand in a manner that it is fed vertically upward, the top surface of the top plate 8 can be effectively used while remaining completely flat, and the roll holder can stand up on the top plate 8. It is possible to eliminate the aesthetically unsightly and embarrassing appearance.

[Brief explanation of the drawing]

Fig. 1 is an elevation view conceptually showing the configuration of the automatic feed-out type roll holder according to this invention, Fig. 2 is a front view showing the same roll holder, and Fig. 3 shows a different configuration of the guide. FIG. 4 is an elevational view showing the roll holder of the second embodiment, FIG. 5 is a perspective view showing the roll structure of a continuous thin film product, and FIG. 6 is a conventional roll holder. It is an illustrated vertical cross-sectional view.

Claims (1)

[Scope of claims for utility model registration] (1) Breaking lines such as perforations made for each unit of use 3
It rotatably supports a roll 1 wound with a continuous thin film product 3 to be used by cutting off the roll 1, and is provided with a pair of feed rollers 6 and 7 for feeding out the continuous thin film product 3 of the roll 1, and the feed roller 6 is rotated. The motor 14 is automatically controlled to feed out the length of one usage unit each time one usage unit of the product 3a of the continuous thin film product 3 fed out by the feed rollers 6 and 7 is cut off. An automatic feed-out type roll holder characterized in that a guide 5 for guiding the continuous thin film product 3 sent out by the pair of feed rollers 6 and 7 is provided at a position on the forward side of the pair of feed rollers 6 and 7. (2) The guide 5 described in Claim 1 of the Utility Model Registration Form has a stopper portion 5c with its tip exit portion closed, and the tip of the continuous thin film product 3 is formed approximately in the center of the stopper portion 5c. An automatic feed-out type roll holder characterized in that a cutout opening 5d is formed in a shape and size suitable for manually picking and pulling out the roll holder. (3) The guide 5 described in claim 1 or 2 of the utility model registration claim has a vertical cross-sectional shape that is originally expanded, and the expanded portion is formed as the pool portion 5b of the continuous thin film product 3. A self-feeding roll holder characterized by: