JP2006296661A - Automatic dispenser of roll paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic dispenser of roll paper capable of using every commercially available roll paper sheets despite of types and quality of roll paper sheets, allowing a user to easily replace the roll paper with one hand, preventing clogging of paper due to meandering phenomenon during dispensing and stably dispensing the paper. <P>SOLUTION: This automatic dispenser of the roll paper R is provided with a roller assembly abutting on the outer circumference of the roll paper R and rotatably receiving the roll paper, in a roll paper support frame in a body housing storing the roll paper R, the roller assembly comprises at least a pair of rollers, and another roller 8 having the diameter larger than that of the rollers and provided in an opening part side in a position higher than the pair of rollers and in parallel to the pair of rollers at some interval apart, and is so constituted as to prevent falling-in and flipping of the roll paper and to dispense a prescribed length of the roll paper from the opening part provided in one side part of the roll paper support frame. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to an automatic feeding device for roll paper such as toilet paper, kitchen paper, and paper towel.

  Conventionally, for example, a roll shaft that rotatably supports the roll paper through a center hole of a roll paper core such as toilet paper, a pair of feed rollers that continuously feed the roll paper from the roll of roll paper, and this feed A driving device for rotationally driving the roller, a feed amount control means for automatically controlling the roll paper fed forward from a pair of the feed rollers so as to feed out a length corresponding to one use unit, and one use unit from the feed roller A roll paper automatic feeding device having a cutter that automatically cuts a roll paper previously fed out for a length of minutes and a paper receiver that folds the cut roll paper in a zigzag shape by its own weight is known (patent) Reference 1 and Patent Document 2).

In this type of device, when loading a new roll paper in the device, remove the roll paper core after use from the roll shaft and insert the roll shaft into the center hole of the new roll paper core. Was mounted on a roll shaft support provided in the upper part of the cylindrical housing. For this reason, it is usually necessary to work with both hands when replacing the roll paper, which is difficult for those who cannot use both hands or who are physically handicapped, especially those who are handicapped with one hand. Also, it is necessary to use a roll paper with a core.

To improve the complexity of roll paper replacement, the roll paper is received by a pair of rollers provided in the lower part of the main body case, and the toilet paper holder is designed to assist rotation and lighten rotation only when the roll paper is heavy. Has been proposed (see Patent Document 3). As a result, the roll paper can be exchanged with one hand.
JP 2004-269144 A Japanese Patent Laid-Open No. 2003-72998 Japanese Patent Laid-Open No. 1-242019

  By the way, for example, many roll papers for toilet paper with and without a core are commercially available. However, in apparatuses such as those described in Patent Document 1 and Patent Document 2, only roll paper having a winding core is used. It cannot be used, and the roll paper that can be used is limited.

Further, in the structure in which the roll paper as described in Patent Document 3 is received by a pair of rollers, that is, rollers, if the sense of the roller is relatively wide, the roll paper is used when the diameter is reduced by using the roll paper. It sinks between the rollers, and the outer periphery of the roll paper comes into contact with the bottom plate. This tendency is particularly noticeable in the case of soft type roll paper, and there is a problem that roll paper cannot be paid out due to significant frictional resistance, or that a large load is applied to the drive system, leading to failure of the feed system. On the other hand, even when the interval between the rollers is narrow, as the roll paper is used and the diameter is reduced, the rollers are separated from the rollers and the same problem as described above occurs.

  On the other hand, in this type of roll paper that is commercially available, the frequency of the paper width varies greatly depending on each paper manufacturer, and there is a bad paper width slit. For this reason, when a commercially available roll paper is automatically fed at a high speed by the power of a motor, the roll paper may move to the right or left during feeding, and a paper jam occurs due to a meandering phenomenon. is there.

Therefore, the present invention solves the problems associated with the prior art, can use any commercially available roll paper regardless of the type and quality of the roll paper, can easily replace the roll paper with one hand, and meandering phenomenon during feeding It is an object of the present invention to provide an automatic roll paper feeding device that can prevent paper jam due to the paper and can feed the paper stably.

  In order to achieve the above object, an automatic roll paper feeding device according to the present invention receives a roll paper rotatably by contacting the outer circumference of the roll paper with a roll paper support frame in a main body housing for storing the roll paper. A roller assembly is provided, the roller assembly having at least a pair of rollers and a diameter larger than the diameter of these rollers and higher than the position of the pair of rollers and spaced apart from the pair of rollers on the opening side. It is configured to prevent the roll paper from dropping and popping out, and is configured to feed the roll paper by a predetermined length from the opening provided on one side of the roll paper support frame. It is characterized by that.

  Each roller in the roller assembly may be arranged along an arc of about 50 ° relative to the spatial position where the center of the unused roll paper to be loaded will be located.

  The roller assembly includes three rollers having the same diameter arranged at approximately equal intervals, and one other roller having a diameter larger than the diameter of these rollers and arranged on the opening side at a position higher than the positions of these rollers. And these rollers can be arranged in an arc.

  Furthermore, a guide member for preventing meandering and catching when the roll paper fed out from the opening provided on one side of the roll paper support frame to the feeding position is provided.

  The guide member can be provided along both sides of the roll paper fed out from the opening provided on one side of the roll paper support frame to the feeding position.

  Furthermore, a feed roller may be provided along the path of the roll paper fed from the opening provided on one side of the roll paper support frame to the feed position.

  Furthermore, a non-conductive cartridge provided with a cutter blade in an electrically insulated state can be provided between the feed roller and the feed position.

  In the automatic roll paper feeding device according to the present invention, the roller assembly includes at least a pair of rollers and the pair of rollers on the opening side at a position having a diameter larger than the diameter of the rollers and higher than the position of the pair of rollers. It is made up of another roller that is spaced apart from and parallel to the roll paper, and is configured to prevent the roll paper from dropping and popping out, so the roll paper can be used with or without a core regardless of the type. Is no longer required to pass through the mandrel, and the roll paper can be easily attached to the apparatus with one hand and with one hand, and even a person with a handicap in one hand can easily use it. Further, the contact friction force of the roll paper applied at the time of feeding is suppressed, and the roll paper can be fed out stably.

  In addition, another roller provided in parallel at a distance from the pair of rollers on the opening side has a diameter larger than the diameter of the pair of rollers and is positioned at a position higher than the position of the pair of rollers. When the diameter of the paper becomes smaller as the use of the paper proceeds, it is possible to prevent the roll paper fed out at high speed from jumping forward.

  In the automatic roll paper feeding device according to the present invention, a guide member for preventing meandering and catching when the roll paper fed out from the opening provided on one side of the roll paper support frame to the feeding position is provided. Because of this, even if there is some variation in the dimensions of the roll paper used, there is no meandering phenomenon that moves to the right or to the left when the roll paper is fed out at high speed, resulting in paper jams. Can be prevented.

  Further, when a non-conductive cartridge provided with a cutter blade in an electrically insulated state is provided as a roll paper cutting means between the feed roller and the feed position, the roll paper and the cutter blade There is no electrostatic charge in the paper, and stable feeding and cutting of the roll paper can be guaranteed.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1 and 2 show a roll paper automatic feeding device according to an embodiment of the present invention. In the illustrated automatic feeding device, reference numeral 1 denotes a main body housing, and a front surface portion 2 thereof includes a front cover 3. The front cover 3 includes an upper front cover portion 3a and a lower front cover portion 3b. The upper end of the upper front cover portion 3a is rotatably attached to the top end portion of the main body housing 1 by, for example, a hinge, and the lower front cover portion 3b. Is attached to the lower end of the upper front cover part 3a by a hinge, for example.

A roll paper support frame 4 that receives the roll paper R is attached to an upper portion inside the main body housing 1. The front surface of the roll paper support frame 4 is open, and four resin rollers 5 are provided at the bottom. 6, 7, and 8 are arranged along an arc substantially corresponding to the outer peripheral surface of the unused roll paper R. These four rollers 5, 6, 7 and 8, as shown in an enlarged view in FIG. 3, when the radius of the unused roll paper R is 60 mm, the vertical axis passing through the center of the unused roll paper R With respect to the left side, that is, the rear side 20 ° to the right side, that is, the front side 32 °. The rollers 5, 6 and 7 have the same diameter and are arranged with a distance between their centers of 17 mm, and the roller 8 is located on the opening side of the front surface portion of the roll paper support frame 4 as shown in the figure. The rollers 5, 6 and 7 have a larger diameter, and the central axis thereof is positioned higher than the central axes of the rollers 5, 6 and 7. As a result, even if the roll paper R is pulled out from either the A direction or the B direction, the roll paper and the contact friction resistance applied at the time of feeding can be kept low, and even if the diameter of the roll paper is reduced, the high speed The roll paper fed out in the step 8 does not jump forward by the action of the roll 8.

  Under the roll paper support frame 4 inside the main body housing 1, meandering and catching when the roll paper fed out from the opening of the roll paper guide bar 9 and one side of the roll paper support frame 4 is fed out. A guide member 10 is provided for prevention. The guide members 10 are provided along both sides of the roll paper fed from the opening on one side of the roll paper support frame 4 to the feed position, and each guide member 10 is formed in a cross-sectional U shape with a groove width of 2 mm. The guide width is about 4 mm wider than the width of the roll paper. The guide member 10 suppresses the occurrence of a so-called meandering phenomenon in which the roll paper approaches the right side or the left side during feeding, and can prevent a paper jam. A roll paper guide plate 11 made of an iron plate is provided along the roll paper feed path.

  Further, a roll paper feeding / cutting control device 12 is provided below the guide member 10 and on the back side of the roll paper guide plate 11. The roll paper feeding / cutting control device 12 is provided in the casing 13 with a feeding roller. 14, a roll paper pressing lever assembly 15 that presses the roll paper to be fed to the feed roller 14, a feed amount detector 16 that detects the roll paper feed amount from the rotation speed of the feed roller 14, A cartridge type cutter 17 is provided.

  The feed roller 14 is disposed so as to slightly protrude forward from the roll paper guide plate 11 and is configured to be rotationally driven by a feed drive motor (not shown) via a feed drive mechanism (not shown). The feed amount detector 16 is combined with the feed roller 14 and is configured to detect the roll paper feed amount from the number of rotations thereof. However, this detector detects the number of times the limit switch is turned on and off. Further, a configuration using an optical sensor or a proximity sensor, and various other rotary encoders may be used. The detection signal from the feed amount detector 16 is compared with a feed amount setting count number set in advance by the control unit 18, and when a preset feed amount setting count number is reached, the drive motor of the feed roller 14 is stopped. The

As shown in FIG. 1, the roll paper pressing lever assembly 15 is made up of rollers 15a and 15b that suppress the bending that occurs when the roll paper is pulled in, a roll paper pressing roller 15c, and a permanent magnet 15d. The roll paper side, that is, the inner end of the permanent magnet 15d is formed in an arc shape.
Thereby, the bending which generate | occur | produces when a roll paper is drawn | feeded out is suppressed, and the rotational drive from the feed outlet roller 14 can be supported with the stable crimping | compression-bonding force. Especially in soft toilet paper, the roll paper is bent greatly during feeding, and even if the pressure is strong or weak, the roll paper is damaged during feeding and paper jam occurs. However, by using the roll paper pressing lever assembly 15 configured as described above, such inconvenience can be prevented in advance. Further, the roll magnet holding lever assembly 15 is attracted to the roll paper guide plate 11 by the action of the permanent magnet 15d, so that a spring effect of pulling and a damper effect of returning the spring are appropriately obtained. By the way, in order to operate these mechanisms, a spring or the like is generally used. However, setting with a spring is extremely difficult, and there is a risk that the reliability of the operation may decrease due to the spring settling as it is used every day. However, this problem can be solved by using the permanent magnet 15d.

    As shown in FIG. 4, the cartridge-type cutter 17 is housed in a substantially rectangular parallelepiped box-shaped cartridge 19, and is detachably provided in the casing 13 of the roll paper feeding and cutting control device 12. As shown in FIGS. 4 and 5, slits 20 and 21 through which the roll paper R is inserted are respectively formed in the upper surface portion 19 a and the lower surface portion 19 b of the cartridge 19. These slits 20 and 21 are located on the same vertical plane. As shown in FIG. 1, the lower end of the guide member 10 extends at both ends of the slit 20. A guide wall 22 that guides the movement of the roll paper R and prevents meandering back and forth is formed in the slit 21 of the lower surface portion 19b.

  A fixed blade 23 and a movable blade 24 are provided in the cartridge 19 between the slits 20 and 21, and a drive lever 25 is provided on the movable blade 24. The drive lever 25 protrudes from the cartridge 19 and is configured to cooperate with a drive cam 27 connected to the cutter drive motor 26. The drive cam 27 is coaxially connected to the rotating shaft of the cutter drive motor 26 via a reduction mechanism (not shown), and is disposed in the vicinity of the cartridge 19. The drive cam 27 is provided with a protrusion 28 protruding at a position shifted from each other by 180 °. The protrusion 28 engages with the drive lever 25 to drive the movable blade 24. Then, due to the half rotation of the drive cam 27, the movable blade 24 swings and the roll paper R is cut. Further, a return spring (not shown) for returning the movable blade 24 to the original position is provided in the cartridge 19, and this return spring returns the movable blade 24 swung by the drive cam 27 to the initial position. Act on.

   The cartridge 19 and the drive lever 25 of the cutter 17 are formed of a non-conductive synthetic resin, and the fixed blade 23 and the movable blade 24 of the cutter 17 are connected to the cartridge 19 and the drive lever 25 and other components around the cutter 19. It is installed in an insulated state.

    As shown in FIG. 1 and FIG. 2, a feeding paper receiving base 29 for receiving the part where the roll paper R is fed is provided at the lower feeding position of the main body housing 1. A surrounding side wall 30 is provided on a part of the front side from the front side, and is attached to the lower part of the main body housing 1 by a support member 31.

   The lower front cover portion 3b of the main body housing 1 is provided with a push button 32 for a switch for feeding the roll paper R. An adjustment knob 33 such as a volume for adjusting the feed amount of the roll paper R is provided on the lower front cover portion 3 b of the main body housing 1 on the side of the push button 32.

The operation of the automatic roll paper feeding device according to the illustrated embodiment configured as described above will be described.
First, the front cover 3 of the front surface portion 2 of the main body housing 1 is opened, and the roll paper R is put on the four resin rollers 5, 6, 7, 8 in the roll paper support frame 4. In this case, the roll paper R can be loaded regardless of the winding direction. Then, the roll paper holding lever assembly 15 is tilted forward to open a space between the roll roller 14 and the feed roller 14, the roll paper R feed end is pulled down along the guide member 10, passes through the feed roller 14, and the roll paper R Is passed through the slit 20 formed in the cartridge 19 of the cutter 17, and is inserted between the fixed blade 23 and the movable blade 24, and the roll paper pressing lever assembly 15 is returned. As a result, the apparatus is in a state where the roll paper R can be fed.

    When the roll paper is used, when the push button 32 is pressed, the feed roller 14 is driven by the feed drive motor in the roll paper feed cutting control device 12, and the roll paper R is fed. The roll paper R that has been fed out falls to a feeding paper receiving tray 29 below the main body housing 1. At this time, the roll paper R is bent by its own weight between the support member 31 and the surrounding side wall 30 and is brought into contact with one side, folded at that position, folded toward the other side, and folded in this manner. In this case, the feed amount of the roll paper R can be arbitrarily set by setting the control device 12 by turning the adjustment knob 33.

    Thereafter, the drive cam 27 is rotated by the cutter drive motor 26, and the protrusion 28 on the drive cam 27 engages with the drive lever 25, whereby the movable blade 24 swings and cuts the roll paper R. After cutting the roll paper R, a feeding drive motor (not shown) in the control device 12 is further driven to feed the roll paper R by a predetermined amount so that the leading edge of the roll paper R is movable with the fixed blade 23 in the cartridge 19 of the cutter 17. It stops so that it may be located below the blade 24.

  By the way, in the illustrated embodiment, the roller assembly in the roll paper support frame 4 inside the main body housing 1 is made up of four resin rollers 5, 6, 7, 8. However, instead of the rollers 5, 6, 7, In addition, a structure in which a flexible bell is hung on a pair of rollers may be used, or three or more small-diameter rollers may be used.

1 is a schematic partial cross-sectional view seen from the side of an automatic roll paper feeding device according to an embodiment of the present invention. FIG. 2 is a schematic front view of the automatic roll paper feeding device shown in FIG. 1. The figure which expands and shows the arrangement configuration of the roller assembly which rotatably receives the roll paper in the automatic roll paper feeding apparatus shown in FIG. FIG. 2 is a perspective view showing a cutter cartridge in the automatic roll paper feeding device shown in FIG. 1. FIG. 5 is a partially broken perspective view of the cutter cartridge shown in FIG. 4.

Explanation of symbols

1: Main body housing 2: Front portion of main body housing 3: Front cover 3a: Upper front cover portion 3b: Lower front cover portion 4: Roll paper support frame 5: Roller 6: Roller 7: Roller 8: Roller 9: Roll paper Guide bar 10: Guide member 11: Roll paper guide plate 12: Roll paper feed / cut control device 13: Casing of roll paper feed / cut control device 12: Feed roller 15: Roll paper pressing lever assembly 15a: Roller 15b: Roller 15c: Roll paper pressing roller 15d: Permanent magnet 16: Feeding amount detector 17: Cartridge type cutter 18: Control unit 19: Cartridge 19a: Upper surface portion of cartridge 17 19b: Lower surface portion of cartridge 17 20: Slit 21: Slit 22 : Guide wall 23: Fixed blade 24: Movable blade 25: Drive lever 26: Cutter drive motor 27: Drive cam 28: Protrusion 29: Feeding paper tray 30: Surrounding side wall 31: Support member 32: Push button 33: Adjustment knob

Claims (9)

  A roll assembly that receives the roll paper in contact with the outer periphery of the roll paper is provided on the roll paper support frame in the main body housing that stores the roll paper, and the roller assembly includes at least a pair of rollers, The roller has a diameter larger than the diameter of the pair of rollers, and is separated from the pair of rollers on the opening side at a position higher than the position of the pair of rollers. An automatic roll paper feeding device characterized in that the roll paper is fed out by a predetermined length from an opening provided in the roll paper support frame.   The roller assembly is arranged along a circular arc range of about 50 ° with respect to a spatial position where the center of an unused roll paper to be loaded with each roller is located. The automatic roll paper feeding device according to claim 1.   The roller assembly includes three rollers having the same diameter arranged at approximately equal intervals, and one other roller having a diameter larger than these roller diameters and disposed on the opening side at a position higher than the position of the roller. The roll paper automatic feeding device according to claim 1, wherein the rollers are arranged in an arc shape.   Furthermore, it has a guide member which prevents meandering and catching at the time of feeding out of the roll paper fed out from the opening provided in one side part of the above-mentioned roll paper support frame to the feeding position. An automatic roll paper feeding device according to claim 1.   5. The automatic roll paper according to claim 4, wherein the guide member is provided along both sides of the roll paper fed from an opening provided on one side of the cylindrical housing to a feeding position. Feeding device.   Furthermore, it has a roll paper guide plate provided along the back surface of the roll paper fed out from the opening provided on one side of the cylindrical housing to the feed position, and guiding the roll paper feeding. Item 4. An automatic roll paper feeding device according to any one of Items 1 to 3.   Furthermore, a roll paper holding lever assembly adapted to co-operate with the feed roller along the path of the roll paper fed to the feed position from an opening provided on one side of the roll paper support frame is provided. The automatic roll-out device for roll paper according to any one of claims 1 to 6.   8. The automatic roll paper feeding device according to claim 7, wherein the roll paper holding lever assembly includes a permanent magnet that cooperates with the roll paper guide plate. The automatic roll paper according to claim 7, further comprising a non-conductive cartridge provided with a cutter blade in an electrically insulated state between the feeding roller and the feeding position. Feeding device.

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