JPH07106811B2 - Feeding device for long winding sheet with perforations - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for feeding perforated long winding sheets, and more particularly to a device for feeding thin, soft and weak sheets.

[Conventional technology]

Thin, soft and weak sheets are widely used in fields such as toiletries, sanitary and housekeeping.

Conventionally, in these fields, as a method for delivering a sheet material having a certain area for one use, one that has been cut into a certain size is or is folded and then bagged or boxed.
It is known that a batch is withdrawn or pops up.

However, in the method of Samurai et al., It is generally used as a long winding sheet because it is bulky when used in a large amount.
In order to cut off a single roll, most of the long rolls are pressed against the lid of the roll-up sheet holder or the edge of the blade provided on the dispenser cabinet to cut out the roll.

However, the above method, depending on the material of the winding sheet,
It is difficult to cut, and it has drawbacks such as not finishing the cut cleanly.Therefore, long winding sheets with perforations at regular intervals are also provided, and long winding sheets with perforations are also provided. Various feeding, cutting jigs and devices have also been proposed.

[Problems to be Solved by the Present Invention]

It is difficult to reliably cut out the feeding and cutting jigs or devices proposed hitherto with certain perforations unless the user is used to them. For example, it is necessary to check the perforation position of the sheet, press the winding sheet by hand, and then cut it off by impacting it, making it difficult for the unspecified number of people, especially children, to use it. Needs explanation.

In addition, feeding a long winding sheet with perforations,
The cutting jig or device has the following drawbacks. That is, the first
Since there are perforations, the tensile strength is extremely weak at the perforations. It may be impossible to use it continuously.

Secondly, since the perforation interval of the long sheet varies, the perforation position to be cut cannot always be set at a desired predetermined position when the feeding length is constant.
That is, when the perforation distance of the long winding sheet is slightly deviated to the long side, the error is integrated and gradually moved to the jig or device side, and finally enters the jig or device. Therefore, the next drawing or drawing cannot be done.

Therefore, there has been almost no proposal of a constant length feeding mechanism for a long winding sheet which is thin and soft and has a weak waist, and the feeding has to be controlled by observing the position of the perforations with eyes only. It is a hindrance to deviceization and automation.

INDUSTRIAL APPLICABILITY According to the present invention, a long roll-up sheet with perforations can be reliably fed out of the device without being cut by the perforations in the device before being fed out, and if necessary, the sheet can be fed to a certain length. An object of the present invention is to provide a device for feeding a long winding sheet with perforations that can be cut off.

[Means for solving problems]

The present invention comprises at least two rotating rolls that can rotate in contact with each other, and a perforated long winding sheet is wrapped around the peripheral surface of at least one rotating roll at a holding angle of 180 ° or more. Further, the feeding device is further inserted into the nip of the roll, and the perforated long winding sheet is fed by the rotation of the roll.

[Work]

The present invention is constituted as described above, and a perforated long winding sheet (hereinafter abbreviated as perforated sheet) is
It is wound around the peripheral surface of one of at least two rotating rolls which rotate in contact with each other and is further inserted into the nip of the roll.

That is, in the present invention, when the perforated sheet is fed, the perforated sheet wound around the peripheral surface of the rotating roll is fed by the frictional force due to the surface contact between the roll peripheral surface and the sheet due to the rotation of the rotating roll. Further, since it is fed out by sandwiching it between the peripheral surfaces of the two rolls by inserting the nip of the rolls, it is not necessary to pull the feeding edge of the perforated sheet as in the prior art, and therefore, it is in the apparatus. There is no danger of cutting at the perforations.

According to the research conducted by the present inventors, in the case of a perforated sheet, particularly a thin and soft sheet, the holding angle when the perforated sheet is wrapped around a rotating roll is 180 ° or more, and at least 1 It is necessary to insert one nip to prevent cutting of perforations in the device during feeding. still,
The nip does not need to be particularly pressurized, but if the perforated sheet is slippery on the roll peripheral surface, the roll material may be softened or uneven, or an appropriate pressure means may be provided.

Further, when the fed-out sheet is cut off, the feeding-out device plays a role of a presser and a brake, so that the cutting-out is easy and the handling is easy.

In the present invention, the number of rotating rolls that rotate in contact with each other is not limited to two, and may be three or more. The number of rotating rolls is 3 or more, the number of rotating rolls on which the sheet can be wound is 2 or more, and the nip for inserting the sheet is 2
With the above, there is no slip between the peripheral surface of the rotating roll and the sheet to be fed out, and the sheet can be fed out more smoothly.

When the sheet is wound around the surface of the rotating roll, the holding angle of two or more sheets may be 180 ° or more.

Further, according to the present invention, a sheet of a certain length can be fed by rotating the rotating roll by a certain angle. That is,
If the circumference of the roll within a certain angle in any one of the rolls of the roll is adjusted to the perforation of the perforated sheet (pitch) and the rotating roll is rotated by the certain angle, a sheet of a constant length is always obtained. It can be paid out.

In this case, it is desirable that the circumference of the rotating roll within the certain angle is set to be slightly longer than the pitch of the perforated sheet. The circumference of the rotating roll within a certain angle can be determined by the perforation pitch (P) and its variation (standard deviation σ), but preferably the circumference of the rotating roll within the certain angle is ( P) to (P + 3σ).

When setting the circumference of the rotating roll within a certain angle as described above, when the rotating roll is rotated at a certain angle, the sheet is formed to be slightly longer than the perforation pitch of the perforated sheet. The position becomes slightly longer with each feeding, but the perimeter within a certain angle is (P) to (P +) relative to the perforation pitch (P) of the perforated sheet.
Since it is about 3σ), there is no support for feeding.

As described above, by setting the circumferential length of the rotary roll within a certain angle to be slightly longer than the perforation pitch, it is possible to greatly reduce the frequency at which the sheet feeding end enters the apparatus. Of course, even if the feeding end of the sheet enters the device, it does not support the feeding of the sheet, but in this type of device used by an unspecified number of people, it is unnecessary to see the feeding end. Cause troubles and cause fatal injury in use.

Therefore, if you attach a handle with a stopper to the drive roll and rotate it manually, or attach a stepping motor to rotate the rotation roll at a constant angle,
A sheet of a fixed length can be always fed out, and the perforated sheet can be machined and automated.

〔Example〕

FIGS. 1 and 2 show one embodiment of the present invention, and FIGS. 3 and 4 show another embodiment of the present invention. The present invention will be specifically described based on this. A raw roll (perforated sheet winding roll) (R) is rotatably attached to a shaft 2 in a case 1. The leading end of the original roll (R) is supplied to the feeding device 4 via the guide roll 3.

The feeding device 4 is composed of a first roll 5 and a second roll 6, and the first roll 5 and the second roll 6 are arranged to rotate in contact with each other. Is wound around the peripheral surface of the first roll 5 via the guide roll 3, and is further passed through the nip 7 where the first roll 5 and the second roll 6 are in contact with each other and is fed to the lower side of the case 1. ing.

The sheet wound around the first roll 5 peripheral surface has a holding angle of 180 ° or more on the first roll 5 peripheral surface. Reference numeral 8 in FIG. 2 is a handle with a stopper for rotating the second roll 6.

In the present invention, the sheet fed from the original roll (R) has a holding angle of 180 ° or more on the peripheral surface of the first roll 5, and if the handle 8 of the second roll 6 is rotated, the first roll is rotated. The sheet wound around the circumference of No. 5 is the first roll 5
Since the frictional force caused by the surface contact with the peripheral surface moves together with the peripheral surface of the first roll 5 and is further nipped by the peripheral surfaces of the first roll 5 and the second roll 6 at the nip 7, it is fed out. There is no risk of cutting at the eyes.

Further, even if the sheet is cut immediately after passing through the nip 7 due to an operation error of the user or a sheet defect (such as a hole), the sheet can be easily delivered by rotating the second roll 6. You can Incidentally, the cut-out of the fed-out sheet is easy because the feeding-out device 4 functions as a presser and a brake.

Further, the second roll 6 is provided with a handle 8 with a stopper.
If the sheet is rotated by a certain angle, the sheet of a certain length can be always fed, and if necessary, a stepping motor can be attached to automatically feed the sheet of a certain length.

Although FIGS. 3 and 4 show another embodiment of the present invention (in FIG. 3 and FIG. 4, the same reference numerals as those in FIGS. 1 and 2 are the same members). The device 9 is the first roll 10,
It consists of the second roll 11 and the third roll 12, and the first
Roll 10 and second roll 11 and second roll 11 and third roll
12 and 12 are designed to rotate around each other.

The feeding tip of the original roll (R) is wound around the peripheral surface of the first roll 10 via the guide roll 3 and further
The second nip is inserted through the nip 13 between the roll 10 and the second roll 11.
It is wrapped around the circumference of roll 11, and the second roll
It is passed through a nip 14 between the 11 and the third roll 12 and is fed to the lower side of the case 1.

The holding angles of the sheets wound around the peripheral surfaces of the first roll 10 and the second roll 11 are 180 ° or more, respectively.

Further, the second roll 11 is formed such that the circumferential length within a certain angle is slightly longer than the perforation interval formed on the original roll (R).

The perforated sheet is fed from the nip 14 by rotating the handle 8 of the second roll 11. In this case, if the second roll 11 is rotated by a fixed angle with the handle 8 having a stopper or a stepping motor is attached and rotated by a fixed angle, a sheet of a fixed length can be always fed.

〔The invention's effect〕

As described above, according to the present invention, when a perforated sheet, particularly a thin, soft and weak sheet, is fed, the rotary roll of the feeding roll may be rotated without strongly pulling the sheet feeding tip. There is no danger of being cut at the part of, and the feeding device plays a role of a presser foot and a brake when cutting out the fed sheet, so it is easy to cut and handle, and the rotating roll can be rotated by a certain angle. With this, a sheet of a fixed length can be always fed out, and automation is easy.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention, FIG. 2 is a front view in which a front surface of a case is cut away, FIG. 3 is a side sectional view of another embodiment of the present invention, and FIG. It is the front view which notched the case front surface of an Example. 1 …… Case, 3 …… Guide roll, 4, 9 …… Feeding device, 5, 1
0 …… First roll, 6,11 …… Second roll, 7,13,14 …… Nip, 12 …… Third roll.

Claims (2)

[Claims] 1. A long winding sheet with perforations is formed at an angle of 180 on a peripheral surface of at least one rotating roll which can rotate in circumferential contact with each other.
A long perforated sheet which is wound at an angle of ゜ or more and is inserted through the nip of the roll so that the long rolled sheet with perforations can be fed out by the rotation of the roll. Rolling sheet feeding device. 2. A sheet according to claim 1, wherein the rotating roll is rotated at a constant angle to feed out a sheet having a constant length.
A device for feeding a long rolled sheet with perforations as described in the item.