JP2004269144A - Automatic payout method and device for roll sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic payout method and device for a roll sheet capable of feeding the roll sheet stably and accurately. <P>SOLUTION: The automatic payout device for roll sheet has a pair of feed rollers 32 and 34 to pay out the roll sheet 20 fed continuously from a roll of the roll sheet 20 and a drive device to rotate the feed roller 34. The arrangement includes a cutter 50 to cut the paid-out sheet 20 automatically and a paper receptacle 22 to fold up the cut sheets 20 in zigzag form by its own weight. A payout amount control means makes automatic control of the sheet 20 paid out forward by the feed rollers 32 and 34 so that its length corresponding to one unit of use is paid out, and after cutting the sheet 20 by the cutter 50, the drive device is further operated to pay out the sheet 20 for a specified amount. A cartridge 52 is formed from a non-conductive member electrically, and cutting edges 54 and 55 are mounted on the cartridge 52 in the condition insulated from the surrounding members. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an automatic roll paper feeding method and apparatus for automatically feeding and cutting roll paper such as toilet paper, kitchen paper, and paper towel.
[0002]
[Prior art]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2000-287872 Conventionally, for example, a roll paper holder with a feeding device for toilet paper, as disclosed in Patent Document 1 by the present applicant, has a fixed length from a roll paper roll. The roll paper is fed by a motor driven feed roller, folded by a paper receiver and cut by a cutter comprising a pair of blades.
[0003]
[Problems to be solved by the invention]
In the case of the above-mentioned conventional technology, when the roll paper is cut by the cutter, the leading end of the roll paper is located immediately above the cutter blade, and in that state, the leading end of the roll paper is affected by temperature and humidity until next use. In some cases, the curl may be separated from the pair of cutter blades or adhered to the blades. In such a case, the roll paper is not fed between the pair of blades even when the next roll paper is fed, and the roll paper gets stuck in the device above the cutter or the roll paper is curled even if fed between the cutter blades. In some cases, it meandered and could not be cut well. Similarly, the roll paper and the cutter blade are charged by static electricity, the roll paper adheres to the cutter blade and the cartridge, and the roll paper may not be fed out or meander between the cutter blades. In some cases, it was not possible.
[0004]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the related art, and has as its object to provide an automatic roll paper feeding method and apparatus that can stably and accurately feed roll paper.
[0005]
[Means for Solving the Problems]
The present invention provides a feed roller that continuously feeds roll paper such as toilet paper from a rotatably supported roll paper roll, a driving device that rotationally drives the feed roller, and a feed roller that is fed before the feed roller. Feeding amount control means for automatically controlling the roll paper to be fed by the length of one use unit, and automatically cutting the roll paper previously fed by the length of one use unit from the feed roller. Using a roll paper automatic feeding device equipped with a cutter and a paper tray that folds the cut roll paper in a zigzag shape by its own weight, the feed amount control means, after cutting the roll paper by the cutter, and further driving the drive Drive the device to feed out the roll paper by a predetermined amount and stop so that the leading end of the roll paper is located below the blade of the cutter. To a paper roll automatic feeding method.
[0006]
Further, the present invention provides a roll shaft rotatably supporting roll paper such as toilet paper, a pair of feed rollers for continuously feeding out roll paper from the roll of roll paper, and a driving device for rotating the feed roller. A feed amount control means for automatically controlling the roll paper fed out of the pair of feed rollers to be fed out by a length of one use unit; and An automatic roll paper feeding device including a cutter that automatically cuts the fed roll paper and a paper tray that folds the cut roll paper in a zigzag shape by its own weight, wherein the cutter is a pair of blades. The pair of blades are provided in a cartridge detachably provided to the automatic roll paper feeding device, and the cartridge is non-conductive. Formed by members, the blade of the cutter is an automatic feeding device roll paper is provided in the cartridge in a state of being insulated from the surrounding members thereof.
[0007]
Further, a cutter driving motor for driving the blade is provided, and a cam member for driving the blade by the cutter driving motor is formed to operate at a cycle shorter than one rotation of the cam member, for example, half a rotation. . Further, in order to adjust the folding width of the paper receiver, a paper receiver width adjustment unit is provided which is capable of adjusting the position in a direction intersecting the roll paper feeding direction. The roll shaft has a flange portion, and an inclined portion having a continuously changing diameter is provided between the flange portion and the side surface of the roll shaft.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 to 5 show an automatic roll paper feeding device 10 according to an embodiment of the present invention. The automatic roll paper feeding device 10 according to this embodiment has a rear plate 12 forming an exterior, The housing 14 includes a housing 14 which is detachably provided and formed in a curved surface shape, and a lid portion 16 provided on a part of a front portion of the housing 14 and provided for swinging opening and closing. An opening 14 a is provided below the housing 14, and a paper receiver 22 is provided below the back plate 12 for receiving the rolled paper 20 such as toilet paper just below. The back plate 12 and the paper receiver 22 are installed at a predetermined interval by a connecting portion 24.
[0009]
The paper receiver 22 is positioned substantially at right angles to the connecting portion 24, and the front side wall 22a of the paper receiver 22 has a height at which the rolled paper 20 to be fed out can abut. Further, the distance between the connecting portion 24 and the front side wall 22a of the paper receiver 22 is such that the front side wall 22a is slidable forward along an advancing / retreating guide portion 22b which is a paper receiving width adjusting portion.
[0010]
A pair of brackets (not shown) are installed above the housing 14, and a roll of roll paper 20 such as toilet paper can be detachably mounted between the brackets via a roll shaft 26 that passes through a shaft insertion hole of the roll paper 20. And rotatably supported. The roll shaft 26 includes a flange 28 having a diameter approximately equal to the diameter of the shaft insertion hole of the roll paper 20, and an inclined portion 30 having a continuously changed diameter is provided between the flange 28 and a side surface of the roll shaft 26. Have been. The inclined portion 30 may have a truncated cone shape in addition to a curved shape as shown in the drawing.
[0011]
A plurality of pairs of feed rollers 32 and 34 for feeding out the roll paper 20 are provided below the roll shaft 26 in the housing 14, and one of the feed rollers 34 rotates the feed roller 34 via a drive mechanism (not shown). A paper feed drive motor (not shown) to be driven is connected. The feed roller 34 is fixed to a rotating shaft, and one groove is formed all around the center of the outer peripheral surface of the feed roller 34, and the O-ring 36 is fitted in this groove. The drive mechanism and the paper feed drive motor, which are drive devices, are located in a case 38 for the drive device. The feed roller 32 is fixed to a rotating shaft 40, and the rotating shaft 40 is supported by bearings 41 and 42 of a case 38 via bearings 45 and 46. An arc-shaped long hole 44 is formed in each of the bearing portions 41 and 42, and a paper holding lever 48 is formed integrally with a bearing 46 of the bearing portion 42. When the paper holding lever 48 swings, the feed roller 32 swings together with the rotating shaft 40, and a gap is formed between the feed roller 32 and the facing feed roller 34. Further, it is preferable to provide a lock mechanism for temporarily locking the paper holding lever 48 and the like in a state where the feed roller 32 swings and a gap is formed between the feed roller 32 and the opposing feed roller 34. Thereby, the insertion operation of the roll paper 20 becomes easier.
[0012]
The feed roller 34 or the drive mechanism is provided with a detector that detects the amount of the roll paper 20 that is fed out from the rotation speed of the feed roller 32 or the like. The detector includes a sensor that detects the number of times the limit switch is turned on and off, a sensor that uses an optical sensor and a proximity sensor, and various other rotary encoders. The detector is connected to a control device (not shown), and the control device compares a feed amount set count number set in a counter in the control device with a count number based on the detection signal, and counts the detected count in the set rotation speed. When the number has reached, the paper feed drive motor is stopped.
[0013]
Below the feed rollers 32 and 34, a cartridge type cutter 50 is provided. The cutter 50 is configured by housing a movable blade 54 and a fixed blade 55 in a substantially rectangular box-shaped cartridge 52, and is provided detachably with respect to a device such as a case 38 of a driving device. As shown in FIG. 4, the cutter 50 is provided with a drive lever 57 for the movable blade 54, and the drive lever 57 protrudes from the cartridge 52 and contacts a drive cam 63 of a cutter drive motor 61. The drive cam 63 is coaxially connected to a rotation shaft of the cutter drive motor 61 via a speed reduction mechanism (not shown), and is located close to the cartridge 52. The drive cam 63 is provided with a protrusion 65 projecting from the position shifted from each other by 180 °. The protrusion 65 is engaged with the drive lever 57 to enable the movable blade 54 to be driven. Then, the movable blade 54 swings by the half rotation of the driving cam 63 to cut the roll paper 20. A return spring for returning the movable blade 54 to the original position is provided in the cartridge 52, and returns the movable blade 54 rocked by the drive cam 63 to the initial position.
[0014]
As shown in FIG. 4, in the cartridge 52 of the cutter 50, slits 67 and 69 through which the roll paper 20 is inserted and exit are formed in the upper surface 52a and the lower surface 52b, respectively. The slits 67 and 69 face each other, and the movable blade 54 and the fixed blade 55 are located between the slits 67 and 69. A guide wall 71 that guides the movement of the roll paper 20 and does not meander sideways is formed in the slit 69 of the lower surface 52b. The cartridge 52 and the drive lever 57 are formed of a non-conductive synthetic resin, and the movable blade 54 and the fixed blade 55 of the cutter 50 are insulated from the surrounding cartridge 52, drive lever 57, and other components. Installed in state.
[0015]
The cutter 50 is provided so as to be detachable integrally with the cartridge 52 with respect to a cutter driving motor 61 for driving the case 38 and the movable blade 54 of the driving device, a driving cam 63 and the like. In the attachment / detachment mechanism for the cartridge 52, the attachment / detachment lever 58 provided on the case 38 is engaged with the locking projection 56 provided on the side surface of the cartridge 52, and the cartridge 52 is held on the case 38. The attachment / detachment lever 58 is provided rotatably about a rotation shaft 60, and a locking portion 64 that engages with the locking projection 56 is provided on the operation portion 62 side. On the opposite side of the operation unit 62 about the rotation shaft 60, an extruding unit 66 that pushes out the cartridge 52 when rotating about the rotation shaft 60 is integrally provided.
[0016]
A switch 72 for feeding the roll paper 20 is provided below the front side of the housing 14, and a push button 74 is provided outside the switch 72. The housing 14 on the side of the push button 74 is provided with an adjusting knob 76 such as a volume for adjusting the amount of feeding of the roll paper 10.
[0017]
Next, a method of feeding the roll paper 20 of the automatic roll paper feeding device of this embodiment will be described. First, the roll paper 20 is passed through a roll shaft 26 and set between a pair of brackets in the housing 14, and the roll paper 20 is inserted between the feed rollers 32 and 34 as shown in FIGS. At this time, the paper holding lever 48 is tilted forward to open the space between the feed rollers 32 and 34, and the roll paper 20 is passed. Further, the roll paper 20 is passed through the slit 67 formed in the cartridge 52 of the cutter 50, inserted between the movable blade 54 and the fixed blade 55, and the paper holding lever 48 is returned. In this state, the roll paper 20 can be fed out.
[0018]
In use, when the push button 74 is pressed, the paper feed drive motor is rotated by the control device, and the roll paper 20 is fed out by the rotation of the feed rollers 32 and 34 by a fixed amount. The fed roll paper 20 falls into the paper receiver 22 via the opening 14 a below the housing 14. At this time, the roll paper 20 is bent by its own weight between the connecting portion 24 and the front side wall 22a of the paper receiver 22, and when it comes into contact with one, it is folded at that position, folded toward the other, and similarly zigzag. Folding proceeds. The width of this folding is set by appropriately adjusting the projecting position of the front side wall 22a. Further, the feed amount of the roll paper 20 is arbitrarily set by the control device by turning the adjustment knob 76.
[0019]
After the roll paper 20 is cut, a paper feed drive motor (not shown) is further driven by the control device to feed out the roll paper 20 by a predetermined amount, and the leading end of the roll paper 20 is positioned below the movable blade 54 and the fixed blade 55. To stop. The extension amount can be set as appropriate, but may be about 0.2 to 15 cm below the fixed blade 55.
[0020]
Further, a medicine dispersing device is installed at the lower part of the housing 14, and a disinfectant or other medicinal agent for treatment is automatically sprayed on the upper part of the roll paper 20 cut in a folded state by a cutting completion signal. It may be. Alternatively, the medicine may be sprayed on the roll paper 20 that is falling or the roll paper 20 that is being folded.
[0021]
The automatic roll paper feeding device of this embodiment automatically feeds roll paper 20 continuously fed from rolls of toilet paper, kitchen paper, paper towels, and the like to a length of one use unit by feed rollers 32 and 34. It can be folded, folded and cut, and a series of operations can be performed with one touch. In addition, the length and the folding width of the rolled-out roll paper 20 can be set arbitrarily, and an appropriate amount of the roll paper 20 can be fed out according to the purpose of use, thereby enabling efficient use. Thus, the user can obtain paper folded in a desired state without using both hands. In particular, for an elderly person or a person with a disability, the operation of feeding the roll paper can be reduced.
[0022]
Since the roll paper 20 is fed out and cut immediately after the roll paper 20 is fed out and cut, the roll paper 20 reliably passes between the movable blade 54 and the fixed blade 55 to be in a standby state. Even if the sheet is curled or the like, the sheet cannot be fed out at the next use, the paper is not jammed, and other cutting defects do not occur. In addition, meandering of the roll paper 20 is suppressed, and a clean cut can be performed. In addition, since the sheet is fed in advance by a predetermined amount, the feeding amount at the time of the next use may be small, quick feeding is possible, and the waiting time can be advantageously reduced even in continuous use or sudden use. In addition, the drive cam 63 can cut the roll paper 20 by a half turn, and this also enables quick use.
[0023]
Further, the cartridge 52 and the drive lever 57 are formed of a non-conductive resin, and the movable blade 54, the fixed blade 55 and the inside of the cartridge 52 are electrically insulated from each other. . As a result, the roll paper 20 does not meander or curl due to static electricity, so that a feeding failure or a cutting failure does not occur. Further, a guide wall 71 is formed in the slit 69 of the lower surface portion 52b to guide the movement of the roll paper 20 so as not to meander sideways, so that the roll paper 20 does not get caught in the cartridge 52.
[0024]
In addition, since the inclined portions 30 are formed on both sides of the roll shaft 26, the roll of the roll paper 20 is always positioned at the center of the roll shaft 26, and the positioning of the roll paper 20 with respect to the feed rollers 32 and 34 and the cutter 50 is automatically performed. Made in In the roll paper automatic feeding device of the present invention, since the O-ring 36 is attached to the feed roller 34, the roll paper 20 can be reliably held and fed between the feed roller 32 and the feed roller 32. Further, replacement of the O-ring 36 is also easy. Further, since the cutter 50 is of a cartridge type, it can be easily replaced when it becomes difficult to cut the blade.
[0025]
The push button 74 may be a non-contact type using an optical sensor or a proximity sensor, in addition to the push type. Further, a device that responds by voice may be provided instead of the push button. Further, a plurality of folded papers may be automatically supplied by one operation. In this case, if the paper is picked up after one folding / cutting operation, it is detected and the next feeding, folding / cutting operation is automatically performed, and the next use is possible. It may be set so that this is automatically repeated a certain number of times. This number can be set arbitrarily. Further, it is preferable that the length of the paper to be folded can be appropriately set.
[0026]
In addition, the shape of the cartridge and blade, and the shape of the drive cam can be set as appropriate, and the power supply for the paper feed drive motor, cutter drive motor, switches, detectors, control devices, etc. A DC power supply such as a battery may be used. Also, the shape of the paper receiver can be set as appropriate, and the interval between the front side walls of the paper receiver is not only the paper receiver width adjustment part provided on the side wall part but also the paper receiver width provided on the bottom surface of the paper receiver so as to be able to advance and retreat in the horizontal direction. The adjustment may be made by an advancing / retreating guide unit that is an adjustment unit.
[0027]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the roll paper automatic feeding method and apparatus of this invention, an elderly person, a physically handicapped person, etc., or a child, etc., can easily feed out paper from roll paper, automatically cut, and put it in a folded state. It can be safely and quickly set to a state where it can be used in a single operation. Furthermore, it is sanitary for the user, and the width and length of the roll paper to be folded can be set arbitrarily, and the roll paper can be used in an appropriate state according to the application. In addition, the feeding and positioning of the roll paper are accurately performed, cutting failure and paper jam are less likely to occur, and quick feeding is possible, so that the reliability is high.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a roll paper automatic feeding device according to an embodiment of the present invention.
FIG. 2 is a front view of the inside of the automatic roll paper feeding device according to the embodiment of the present invention.
FIG. 3 is a longitudinal sectional view of the roll paper automatic feeding device according to the embodiment of the present invention.
FIG. 4 is a perspective view showing a cutter cartridge of the automatic roll paper feeding device according to the embodiment of the present invention.
FIG. 5 is a partially cutaway perspective view of the cutter cartridge according to the embodiment of the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 10 roll paper feeding device 12 back plate 14 housing 16 lid 20 roll paper 22 paper receiver 22a front side wall 22b advance / retreat guide portion 24 connecting portion 26 roll shaft 28 flange portion 30 inclined portion 32, 34 feed roller 48 paper holding lever 50 cutter 52 cartridge 54 movable blade 55 fixed blade 57 drive lever 58 detachable lever 61 cutter drive motor 62 operating unit 63 drive cam 67, 69 slit

Claims (5)

A feed roller for continuously feeding roll paper from a rotatably supported roll paper roll, a driving device for rotating this feed roller, and the roll paper fed ahead of the feed roller for one unit of use. Feed amount control means for automatically controlling the roll paper to be fed out by the length of the roll, a cutter for automatically cutting the roll paper previously fed by the length of one use unit from the feed roller, and the cut roll Using a roll paper automatic feeding device equipped with a paper tray that folds the paper in a zigzag shape by its own weight, the feeding amount control means further drives the driving device after cutting the roll paper by the cutter to cut the roll paper. Roll paper automatic feeding, wherein the roll paper is fed out by a predetermined amount and stopped so that the leading end of the roll paper is positioned below the blade of the cutter. Way out. A roll shaft rotatably supporting the roll paper, a pair of feed rollers for continuously feeding the roll paper from the roll of roll paper, a driving device for rotating the feed roller, and a pair of feed rollers. Feeding amount control means for automatically controlling the fed roll paper to be fed by the length of one use unit, and automatically feeding the roll paper fed by the feed roller for the length of one use unit. In a roll paper automatic feeding device provided with a cutter for cutting into rolls and a paper receiver for folding the cut roll paper in a zigzag shape by its own weight, the cutter is composed of a pair of blades, and the roll paper automatic feeding device is The pair of blades are provided in a detachably provided cartridge, the cartridge is formed of a non-conductive member, and the blade of the cutter is provided. Roll paper automatic feeding device, characterized in that provided on the cartridge in a state of being insulated from the surrounding member. A cutter driving motor for driving the blade, wherein a cam member for driving the blade by the cutter driving motor is formed so as to operate at a cycle shorter than one rotation of the cam member. 2. The automatic roll paper feeding device according to item 2. 3. The automatic roll paper feeding device according to claim 2, further comprising a paper receiving width adjusting unit capable of adjusting a position in a direction intersecting with a feeding direction of the roll paper in order to adjust a folding width by the paper receiving unit. 3. The automatic roll paper feeding device according to claim 2, wherein the roll shaft has a flange portion, and an inclined portion having a continuously changing diameter is provided between the flange portion and a side surface of the roll shaft.

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