JPH075076Y2 - Automatic feeding type roll holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention This invention is a continuous thin film product 3 such as a plastic bag or a paper towel, which is continuous in a strip shape with weak break lines such as perforations at each length position of the unit of use. 4 relates to a roll holder for supporting a roll 1 as shown in FIG. 4 in a convenient state for separating and using the thin film product 3a of each unit of use, and more specifically, especially when the user is looking into the outlet 1. Each time the thin film product 3a for the used unit is taken out and used, the continuous thin film product 3 is automatically fed out by the motor drive by the length of one used unit, and the breaking line 3b is completely separated in the feeding process to make one used unit. The present invention relates to an automatic feeding type roll holder having a structure in which the thin film product 3 is made into a single body and its tip is slightly extruded to the exit to prepare for use.

2. Description of the Related Art For example, an automatic feeding type roll holder 4 described in Japanese Utility Model Publication No. 61-6077 has a roll 1 around which a continuous thin film product 3 is wound via a core 2 thereof, as schematically shown in FIG. It is provided with a pair of feed rollers 6 and 7 which are rotatably supported and feed the continuous thin film product 3 of the roll 1. Then, the motor 14 that rotationally drives the feed roller 6 is controlled through a detector 16 that detects the presence or absence of the continuous thin film product 3 that is fed forward from the feed rollers 6 and 7. That is, when one use unit of the thin film product 3a of the continuous thin film product 3 is cut off, this fact is detected by the detector 16, and the detection signal is used to drive the motor 14 to control the continuous thin film product 3 for one use unit. The length is extended.

On the other hand, the user of the thin film product 3a uses a pair of feed rollers 6,
7. The continuous thin film product 3 fed forward from 7 is pinched by hand by the substantially central portion of the tip and strongly pulled. Then, the breaking line 3b located on the front side of the feed rollers 6 and 7 is broken, and the thin film product (such as a plastic bag) 3a can be cut and used.

Problems to be Solved by the Present Invention (I) In the case of the above-mentioned conventional automatic feeding type roll holder,
The continuous thin film product 3 sent out by the feed rollers 6 and 7 was constructed on the premise that the user uses the device by picking the tip portion by hand and pulling strongly to separate the breaking line 3b one by one.
However, since there is a kind of peculiar technique for separating the break line 3b, it was difficult for the first person to use, and it was troublesome.

(II) Roll holders are often installed and used outdoors where wind blows through. Most of them are installed and used in rooms such as shops, but nowadays, strong air-conditioning air for cooling and heating flows in the room. Therefore, the continuous thin film product 3 fed by the feed rollers 6 and 7 as described above.
Is often swayed by the wind and can't be positioned, and is often difficult to pick. Not only that, since the synthetic resin continuous thin film product 3 is usually charged with static electricity, it may be adsorbed (adhered) when it comes close to a metal frame or covers, or the roll 1 and it is difficult to pick it up. It is said to be a problem in use.

(III) In the conventional automatic feeding type roll holder, the feed rollers 6 and 7 feed the continuous thin film product 3 downward, and the continuous thin film product 3 hangs down. For this reason, the roll holder 4 is placed on the top plate 8 of the soccer stand, which is usually provided next to the checkout office of the store so that the customer can refill the product into a shopping bag, for the convenience of cutting and using the thin film product 3a. It is installed upright and used (Fig. 5). For this reason, the effective use area of the top plate 8 is restricted by the space occupied by the roll holders, which makes it inconvenient for the shopper to find a place. In addition, the existence of the roll holder 4 itself is very noticeable in the landscape of the store, which poses a problem of spoiling the aesthetics.

Means for Solving the Problems As means for solving the problems of the above-mentioned prior art, an automatic feeding type roll holder according to the present invention shows a preferred embodiment in FIGS. 1 to 3 of the drawings. As shown in the figure, the pair of rolls 1 rotatably supporting the roll 1 around which the continuous thin film product 3 used is separated from the break lines 3b such as perforations provided for each unit of use, and the continuous thin film product 3 of the roll 1 is fed out. Of the continuous thin film product 3 sent out by the feed rollers 6 and 7 has a length of one use unit each time the thin film product 3a is cut off. In an automatic feeding type roll holder which is automatically controlled so as to be fed out, pulling rollers 6 ', 7'of the continuous thin film product 3 are installed at positions apart from the feeding rollers 6, 7 by a certain distance. , Pull Ri rollers 6 ', was installed motor for rotating the.

The feed roller 6 and the pulling roller 6'separate the break line 3b of the continuous thin film product 3 which has passed through the feed rollers 6 and 7 so as to separate the breaking line 3b before reaching the pulling rollers 6'and 7 '. It is assumed that the driving control of the peripheral speed difference for applying tension to 3 is performed.

Further, the continuous thin film product 3 sent from the pulling rollers 6 ', 7'to the positions ahead of the pulling rollers 6', 7 '.
A detection mechanism 16 for detecting the presence or absence of the motor and controlling the drive of the motor is installed.

As a specific embodiment, the pair of feed rollers 6 and 7 and the tension rollers 6 ′ and 7 ′ may be arranged such that the rotation of the feed rollers 6 and 7 is stopped or the circumferential speed of the tension rollers 6 ′ and 7 ′ is changed. By increasing the speed, the continuous thin film product 3 is tensioned so that the breaking line 3b of the continuous thin film product 3 that has passed through the feed rollers 6 and 7 is separated before reaching the pulling roller 6 '. Take control.

Further, on the outlet side of the pulling rollers 6 ', 7', a stopper portion 5c for closing the outlet portion, a take-out port 5a formed by cutting out a substantially central portion of the stopper portion 5c and the pulling rollers 6 ', 7'. Pool part of the original spread shape that pools the length of one use unit of the continuous thin film product 3 sent out from
The guide 5 formed with 5b is installed.

Action The continuous thin film product 3 delivered by the pair of feed rollers 6, 7 subsequently reaches the pulling rollers 6 ', 7'and is pulled by these and further fed further forward. Then, as soon as the continuous thin film product 3 reaches the pulling rollers 6 ', 7'and is pulled in, the feed rollers 6, 7 and the pulling rollers 6', 7'are immediately determined based on the peripheral speed difference between the continuous rollers 3.
Tension is applied to the continuous thin film product 3 located between and, and the break line 3b passing through the feed rollers 6 and 7 is completely separated before reaching the pulling rollers 6'and 7 '. The single-use unit thin film product 3a that has been cut off and separated is sent out as it is until it completely passes through the pulling rollers 6'and 7 '.

Therefore, the user only has to use the thin film product 3a of one use unit sent out as described above by picking it by hand.

When the guides 5 are installed on the outlet side of the pulling rollers 6'and 7 ', the thin film product 3a sent out by the pulling rollers 6'and 7'as described above has a firmness of the film itself. Guide 5 advances. Therefore, if the feed rollers 6, 7 and the pulling rollers 6 ', 7'and the guide 5 are provided vertically upward, the continuous thin film product 3 is guided upward, and if they are provided sideways or diagonally or downward, continuous The thin film product 3 is guided laterally or diagonally.

Moreover, after the tip of the thin film product 3a reaches and hits the stopper portion 5c, one use unit of the thin film product 3a sent out by the pulling rollers 6 ', 7'is pooled in the pool portion 5c in such a manner as to be successively folded.

Therefore, the user pinches the tip of the thin film product 3a looking into the outlet 5d of the guide 5 and takes it out.

EXAMPLE Next, an example shown in FIG. 1 and subsequent drawings will be described.

1 and 2 show the overall structure of an automatic feeding type roll holder according to the present invention as a conceptual view in which a frame structure is omitted.

The roll 1 in which the continuous thin film product 3 is wound around the winding core 2 as shown in FIG. 4 is located at the lowest position, which is the exact opposite of the conventional example shown in FIG. 5, and the winding core 2 (or the core rod passed through the winding core 2). ), Detachable,
And it is rotatably supported. By the way, in the continuous thin film product 3, a pair of perforations 3b as a break line and a seal line 3c which is the bottom of the bag are parallel at each position of the unit length in the longitudinal direction of the plastic film extruded into a tube shape. And is formed into a continuous plastic bag 3a in a band shape (FIG. 4).

A pair of feed rollers 6 and 7 for sandwiching the continuous thin film product 3 drawn from the roll 1 and feeding it out are installed at a position slightly above the roll 1. Also, a certain distance above the feed rollers 6 and 7, for example, the thin film product 3a.
A pair of pulling rollers 6 ', 7'is installed at a position above and slightly longer than the length of one unit of use. A chain 13 commonly wound around chain sprockets 6a, 6a 'provided on the shafts of the rollers 6 and 6'on one side is driven by a motor 14.

The outer diameter of the pulling roller 6'is made slightly larger than the outer diameter of the feed roller 6, or the number of teeth of the chain sprocket 6a 'of the pulling roller 6'is smaller than that of the feed roller 6. Thus, the peripheral speeds of the tension rollers 6'and 7'rotatably driven by the common motor 14 are set to be slightly higher than the peripheral speeds of the feed rollers 6 and 7. Therefore, the continuous thin film product 3 located between the feed rollers 6 and 7 and the pulling rollers 6 ′ and 7 ′ is applied with a pulling force of a magnitude sufficient and sufficient for breaking the perforations 3 b. Perforated after passing 7
3b is completely broken by the time it reaches the pulling rollers 6 ', 7'. Then, the separated thin film product 3a of one use unit is sent as it is to the other side of the pulling rollers 6'and 7 '.

As another means for applying tension to the continuous thin film product 3, a clutch brake is installed on the chain sprocket shaft portion of the feed roller 6 to stop the rotation of the pair of feed rollers 6 and 7 at an appropriate time. The continuous thin film product 3 may be tensioned to break the perforations 3b in relation to the continuous pulling rollers 6'and 7 '.

In the figure, 15 is a feed roller 6, 7 and a pulling roller 6 ',
Guide pieces for guiding the destination of the continuous thin film product 3 between 7 ', which are fitted in the small-diameter step portion of each roll and are installed in parallel at narrow intervals.

Next, at a position slightly above the pulling rollers 6 and 7, the presence or absence of the thin film product 3a sent out by the pulling rollers 6'and 7'is detected, and the drive signal of the motor 14 is controlled by the detection signal. Non-contact detector arc tube 16 and arc tube 1
6'is installed.

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

The thin film product 3a sent upward by the pulling rollers 6 ', 7'to a position slightly above the arc tube 16 and the arc tube 16', particularly a position partially exposed on the top plate 8 of the soccer table.
A guide 5 for guiding the destination of is installed.

This guide 5 is formed in a laterally long dimension slightly larger than the width dimension of the thin film product 3a (Fig. 2). Further, the vertical cross-sectional shape of the guide 5 (FIG. 1) is such that approximately half of the front side (upper side) is a narrow parallel portion that does not hinder the entry and forward movement of the thin film product 3a.
5a is formed, and its tip outlet portion (upper end portion) is formed as a stopper portion 5c for stopping the tip of the rising thin film product 3a. At a substantially central portion of the stopper portion 5c, a take-out port 5d is cut out in a size and shape suitable for a user to manually pick and take out the tip portion (upper end portion) of the thin film product 3a in the guide 5. Has been done.

On the other hand, approximately half of the front side (lower side) has an original widening shape that spreads downward in a large trumpet shape, and this is formed in the pool portion 5b of the thin film product 3a that abuts the stopper portion 5c and cannot move forward. . The extra length portion of the thin film product 3a is pooled so as to be folded into the pool portion 5b.

Therefore, the thin film product 3a of one use unit (one sheet) sent out by the pulling rollers 6 ', 7'is raised by the strength of its waist,
Enter from the wide-open pool section 5b of Guide 5 and proceed through it.
Further, it is guided in the narrow parallel portion 5a and ascends, and its upper end abuts against the stopper portion 5c of the guide 5 and stops.

Then, the extra length portion of the thin film product 3a is the pulling roller 6 ',
The thin film product 3a for one use unit is allowed to be completely sent out beyond the pulling rollers 6 ', 7', by allowing it to be sent out by 7'and being pooled in the pool portion 5d in a folded state. . Therefore, even if the total length of the thin film product 3a is about 30 cm, the substantial height H of the guide 5 (second
Figure 5) is sufficient for about 5 to 7 cm.

Thus, the tip end of the thin film product 3a abuts the stopper 5c and waits for use while being held in a restrained state, so that it does not flicker even if it receives an outdoor wind or a flow of conditioned air in the room. It is convenient for the user to pinch the tip of the thin film product 3a delivered to the outlet 5d of the guide 5 so that the thin film product 3a can be reliably and easily caught and can be used simply by taking it out.

On the other hand, as described above, the thin film product 3a is taken out and the arc tube
Suppose that 16 and the light receiving tube 16 'detect the fact that the thin film product 3a is not present at the light projecting position, the motor 14 is started based on the detection signal, and the feed rollers 6, 7 and the pulling rollers 6', 7 ' ′ Is driven to send the next thin film product 3a of one use unit separated to the guide 5. The motor 14 operates for a preset time by a timer (not shown) of the control circuit, and feeds out the entire length of the thin film product 3a beyond the pulling rollers 6 ', 7'and automatically stops.

By the way, the guide 5 is installed on a top plate 8 of a so-called soccer table where a shopper exits an accounting office and refills a product into a shopping bag or the like so that at least the outlet 5d is exposed and the guide 5 is rolled. Since the entire structure of the holder is installed and used below the top plate 8 of the soccer stand, the top surface of the top plate 8 of the soccer stand is almost entirely filled with products purchased by the shopper or the like. It can be effectively used as a mount.

Different Embodiments The guide 5 of the above embodiment is formed of a plate material such as metal, plastic, wood board, or cardboard, but is not limited to this. It is also possible to use a wire-shaped or rod-shaped assembly assembled into a mesh, or a striped or lattice-shaped guide excluding the horizontal bars of the mesh.

Alternatively, the guide 5 may be subjected to static electricity antistatic treatment, such as grounding or application of a power failure preventive agent.

Second Embodiment The roll holder shown in FIG. 3 has a width of about 20 mm and a radius of 0.4 to 0.5 mm at approximately the center of at least one of the pair of feed rollers 6 and 7. It is characterized by a configuration in which a thick bulge 9 is provided.

At least one of the feed rollers 6 and 7
Is made of an elastic material such as rubber or synthetic resin, and the bulging portion 9 sandwiches the continuous thin film product 3 passing between the pair of feed rollers 6 and 7 more strongly than the other constant diameter portion 10, The other constant diameter portion 10 is configured to be relatively lightly sandwiched so that the continuous thin film product 3 is constrained so that the continuous thin film product 3 is shaped so as not to be wrinkled (or widthwise moved) to the center.

The significance of this embodiment is as follows.

The continuous thin film product 3 is made of high density polyethylene with a thickness of about 0.008 mm, has a width of 200 mm as a plastic bag, and has perforations 3b.
Has a cut length of 1,7 mm and a joint length of about 0,5 mm. In this case, the force required to uniformly pull the continuous thin film product 3 at a stretch over the entire length of the perforation 3b and break it is about 9.1 kg.

However, if the feed roller 6 has the bulging portion 9 described above,
Almost all the pulling force pulled by the pulling rollers 6 ', 7'is concentrated toward the bulging portion 9, and the central portion of the perforation 3b is first broken.

Because in the range of width 20mm where the bulge 9 is formed,
Connecting portions of the perforations 3b are only present total of 9, since only a total cross-sectional area slightly 0.09 mm ² of the connecting portion, the force required to break becomes slightly less of about 0.819Kg.

Therefore, even if the margin is estimated, the tension rollers 6 ', 7'
If the continuous thin film product 3 is pulled with a force of about 1 kg,
The central part of b is surely broken. After that, the perforations 3b can be quickly and completely ruptured by a small tensile force by a so-called tearing phenomenon in which the connecting portions of the perforations 3b at both ends of the ruptured portion are sequentially ruptured one by one.

It is most preferable that the bulging portion 9 of the feed roller 6 is provided at the central position as shown in the drawing, but a plurality of bulging portions 9 may be provided at positions near both ends in the width direction of the continuous thin film product 3.

If the width of the bulging portion 9 is too wide, the degree of concentration of tensile force decreases,
The perforation 3b has poor breaking performance. However, on the contrary, if it is too narrow, the continuous thin film product 3 may be scratched like a streak. Therefore, it is preferable to appropriately design the thin film product 3a according to the material and properties thereof.

Different Embodiments In each of the embodiments described above, the guide 5 is located at the uppermost position, and the continuous thin film product 3 is vertically upwardly extended. However, the present invention is not limited to this. For example, by keeping the relational arrangement of the respective constituent elements shown in FIG. 1 as it is, and turning the roll 1 as a center at an arbitrary angle so as to have an arbitrary desired direction, the continuous thin film product 3 is directed obliquely upward, Alternatively, it can be carried out as a structure which is extended right beside, obliquely downward, or vertically downward.

Advantageous Effects of the Present Invention As described above in detail with reference to the embodiments, in the automatic feeding type roll holder according to the present invention, the thin film product 3a of one use unit in which the perforation 3b is completely cut off is pulled. Since the rollers 6'and 7'are completely fed out, they can be used by simply picking and picking the thin film product 3a, and no operation is required, which is convenient and convenient.

Moreover, the thin film products sent by the pulling rolls 6 ', 7'
When the destination of 3a is guided by the guide 5, its tip can be properly stopped at a fixed position and does not flicker, so it is easy to pinch in the hand, and it is even more convenient to take out and use the thin film product 3a.

Also, thin film products sent by the tension rollers 6 ', 7'
Since 3a can be sent out in any direction of 360 ° on the vertical surface, this roll holder is flexible enough to be installed and used according to the conditions of the installation place. For example, if the thin film product 3a is vertically installed upward and installed under the top plate 8 of the soccer table, the entire top surface of the top plate 8 can be effectively used, and the roll holder stands up on the top plate 8 to disturb the eyes. It can be eliminated that it becomes a strong existence.

[Brief description of drawings]

1 is an elevational view conceptually showing the construction of a first embodiment of an automatic feeding type roll holder according to the present invention, FIG. 2 is a front view showing the same roll holder, and FIG. FIG. 4 is an elevational view showing a roll holder of a second embodiment of the invention, FIG. 4 is a perspective view showing a roll structure of a continuous thin film product, and FIG. 5 is an elevational view showing a conventional roll holder.

Claims (3)

[Scope of utility model registration request] 1. A roll (1) rotatably supporting a continuous thin film product (3) wound around a perforation line (3b) provided for each unit of use and rotatably supported by said roll. The continuous thin film product (3) of (1) is provided with a pair of feed rollers (6) and (7), and the motor (14) that rotates the feed roller (6) is fed by the feed rollers (6) and (7). Thin film product (3a) of one use unit of continuous thin film product (3)
An automatic feeding type roll holder configured to be automatically controlled so as to feed a length of one use unit each time the tape is cut off. A continuous thin film is provided at a position a certain distance ahead of the feed rollers (6) and (7). The pulling rollers (6 ') and (7') of the product (3) are installed, the motor for rotating the pulling roller (6 ') is installed, and the feed roller (6) and the pulling roller (6') are The continuous thin film product (3) should be separated so that the breaking line (3b) of the continuous thin film product (3) passing through the feed rollers (6) (7) reaches the pulling rollers (6 ') (7'). ) Is controlled by driving the peripheral speed difference, and a continuous thin film product (3) sent from the pulling rollers (6 ') (7') to a position ahead of the pulling rollers (6 ') (7').
Detection mechanism (16) that detects the presence or absence of a motor and controls the drive of the motor
An automatic feeding type roll holder characterized by being installed. 2. A feed roller (6) (7) and a tension roller (6 ') according to claim 1 of the utility model registration.
(7 ') is provided by stopping the rotation of the feed rollers (6), (7) or by increasing the peripheral speed of the tension rollers (6') (7 ').
Tension is applied to the continuous thin film product (3) so that the breaking line (3b) of one use unit of the continuous thin film product (3) which has passed through the step (3) is cut off until it reaches the pulling rollers (6 ') (7'). An automatic feeding type roll holder characterized in that the difference in peripheral speed applied is controlled. 3. A stopper portion (5c) for closing the outlet portion of the pulling roller (6 ') (7') according to claim 1 of the utility model registration, and the stopper portion (5c). ) The original spread shape that pools about the length of one use unit of the continuous thin film product (3) sent out from the take-out port (5d) formed by notching the substantially central part and the pulling rollers (6 ') (7'). (5) that formed the pool part (5b) of
An automatic feeding type roll holder characterized by being installed.