JP3324533B2 - Paper feeder in paper shredder - Google Patents
Paper feeder in paper shredderInfo
- Publication number
- JP3324533B2 JP3324533B2 JP33702398A JP33702398A JP3324533B2 JP 3324533 B2 JP3324533 B2 JP 3324533B2 JP 33702398 A JP33702398 A JP 33702398A JP 33702398 A JP33702398 A JP 33702398A JP 3324533 B2 JP3324533 B2 JP 3324533B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- friction
- roller
- friction coefficient
- coefficient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、文書や紙を数ミリ
の幅に細かく細断する紙片細断装置に関し、特に、紙片
細断装置に紙を給紙する紙片細断装置における給紙装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper shredding device for finely shredding a document or paper to a width of several millimeters, and more particularly to a paper shredding device for feeding paper to the paper shredding device. About.
【０００２】[0002]
【従来の技術】この種の紙片細断装置においては、紙を
一度にまとめてカッタに給紙すると、カッタで細断する
ことができずに、紙詰まりを起こすおそれがあるため、
紙を１枚ずつ給紙する給紙装置が備えられている場合が
ある。この給紙装置には、対接する摩擦ローラと分離ロ
ーラとが備えられ、紙と摩擦ローラ間の摩擦係数が紙と
分離ローラ間の摩擦係数よりも大きく、紙と分離ローラ
間の摩擦係数が紙と紙との間の摩擦係数よりも大きく設
定されている。したがって、これら両ローラによって紙
と紙との間が分離され、分離された紙は最下層の紙と摩
擦ローラとの間の摩擦力が、分離ローラと２枚目の紙と
の間の摩擦力よりも大きいことにより、１枚ずつ分離さ
れて給紙される。2. Description of the Related Art In this type of paper shredding apparatus, if paper is fed to a cutter at once, the paper cannot be cut by the cutter and a paper jam may occur.
There is a case where a sheet feeding device for feeding sheets one by one is provided. This paper feeder is provided with a friction roller and a separation roller that are in contact with each other, a friction coefficient between paper and the friction roller is larger than a friction coefficient between paper and the separation roller, and a friction coefficient between paper and the separation roller is paper. It is set to be larger than the coefficient of friction between paper and paper. Therefore, paper and paper are separated by these two rollers, and the separated paper has a frictional force between the lowermost paper and the friction roller, and a frictional force between the separation roller and the second paper. The sheet is separated and fed one by one.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上述し
た従来の紙片細断装置における給紙装置は、単に１枚ず
つ紙を給紙する構造であるために、大量の紙を給紙する
場合には、給紙時間が長くかかり、このため細断時間が
長くなり、利用者にとって必ずしも使い勝手が良いもの
ではなかった。However, the paper feeder in the above-mentioned conventional paper shredding device has a structure in which paper is simply fed one by one. However, it takes a long time to feed paper, and thus the time required for shredding is long, which is not always convenient for the user.
【０００４】本発明は上記した従来の問題に鑑みなされ
たものであり、その目的とするところは、細断時間を短
縮させた紙片細断装置における給紙装置を提供すること
にある。[0004] The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a paper feeder in a paper shredding apparatus in which the shredding time is reduced.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するため
に、請求項１記載の発明は、対接する摩擦ローラと分離
ローラとが備えられ、紙と摩擦ローラ間の摩擦係数が紙
と分離ローラ間の摩擦係数よりも大きく、紙と分離ロー
ラ間の摩擦係数が紙と紙との間の摩擦係数よりも大きく
設定され、これら両ローラによって複数枚の紙を分離
し、細断するカッタに給紙する紙片細断装置における給
紙装置において、前記摩擦ローラの周面には、周方向に
交互に摩擦係数の大きい部分と摩擦係数の小さい部分と
が設けられ、前記摩擦ローラの周速を前記分離ローラの
周速よりも遅くしたものである。したがって、摩擦ロー
ラの摩擦係数の小さい部分において、分離ローラによっ
て紙が重なった状態で送られ、かつ分離ローラによる紙
の重り量が不足するようなことがない。In order to achieve the above object, according to the first aspect of the present invention, a friction roller and a separation roller which are in contact with each other are provided, and the coefficient of friction between the paper and the friction roller is determined by the paper and the separation roller. The friction coefficient between the paper and the separation roller is set to be greater than the friction coefficient between the paper and the paper, and the rollers are used to separate a plurality of paper sheets and feed the cut paper. In the paper feeder of the paper sheet shredding device, a part having a large friction coefficient and a part having a small friction coefficient are provided alternately in a circumferential direction on a peripheral surface of the friction roller. This is lower than the peripheral speed of the separation roller. Therefore, in a portion where the friction coefficient of the friction roller is small, the paper is fed in a state where the paper is overlapped by the separation roller, and the weight of the paper by the separation roller is not insufficient.
【０００６】また、請求項２記載の発明は、対接する摩
擦ローラと分離ローラとが備えられ、紙と摩擦ローラ間
の摩擦係数が紙と分離ローラ間の摩擦係数よりも大き
く、紙と分離ローラ間の摩擦係数が紙と紙との間の摩擦
係数よりも大きく設定され、これら両ローラによって複
数枚の紙を分離し、細断するカッタに給紙する紙片細断
装置における給紙装置において、前記摩擦ローラの周面
には、周方向に交互に摩擦係数の大きい部分と摩擦係数
の小さい部分とが設けられ、前記摩擦ローラとカッタと
の間にカッタに紙を給紙する供給ローラを設け、この供
給ローラの周速をカッタの周速よりも遅くし、かつ摩擦
ローラの周速を供給ローラの周速よりも遅くしたもので
ある。したがって、カッタへの紙の供給過多が規制され
る。According to a second aspect of the present invention, there is provided a friction roller and a separation roller which are in contact with each other, wherein the friction coefficient between the paper and the friction roller is larger than the friction coefficient between the paper and the separation roller. The friction coefficient between the paper and the paper is set to be larger than the friction coefficient between the paper, a plurality of papers are separated by these two rollers, in a paper feeder in a paper shredder that feeds to a cutter for shredding, On the peripheral surface of the friction roller, a portion having a large friction coefficient and a portion having a small friction coefficient are provided alternately in a circumferential direction, and a supply roller for feeding paper to the cutter is provided between the friction roller and the cutter. The peripheral speed of the supply roller is lower than the peripheral speed of the cutter, and the peripheral speed of the friction roller is lower than the peripheral speed of the supply roller. Therefore, excessive supply of paper to the cutter is regulated.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施の形態を図に
基づいて説明する。図１は本発明に係る紙片細断装置の
概略の構成を示す断面図、図２は同じく給紙装置の平断
面図、図３は図２におけるIII-III 線断面図、図４は同
じく分離ローラを拡大して示す要部の側面図である。図
１において、全体を符号１で示す紙片細断装置は、一側
部の上部に開口１ａが形成されている以外は密閉状態の
箱状を呈し、開口１ａの直下には、後述する給紙装置１
０が載置される載置部２が設けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a schematic configuration of a paper shredder according to the present invention, FIG. 2 is a plan cross-sectional view of the same paper feeder, FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. It is a side view of the principal part which expands and shows a roller. In FIG. 1, a paper shredding device generally denoted by reference numeral 1 has a box shape in a closed state except that an opening 1a is formed at an upper portion of one side, and a sheet feeding device to be described later is provided immediately below the opening 1a. Apparatus 1
There is provided a placing section 2 on which 0 is placed.
【０００８】この載置部２の紙片細断装置１内に臨む上
部は、傾斜するようにガイド部２ａが形成され、このガ
イド部２ａの先端の上方には、カッター４を駆動するた
めの紙検出スイッチ３が設けられている。対接する一対
のカッター４，４はガイド部２ａの延長線上に設けら
れ、これらカッター４，４の下方には、細断屑を収納す
る屑収納部５が設けられている。A guide portion 2a is formed so as to be inclined at an upper portion of the placing portion 2 facing the inside of the paper shredding device 1, and a paper for driving the cutter 4 is provided above the tip of the guide portion 2a. A detection switch 3 is provided. A pair of cutters 4 and 4 that are in contact with each other are provided on an extension of the guide portion 2a, and a waste storage portion 5 that stores shredded waste is provided below the cutters 4 and 4.
【０００９】次に、図２および図３に基づいて給紙装置
１０について説明する。給紙装置１０には、上部の大部
分と背面が開口した略箱状を呈する筺体１１が備えら
れ、この筺体１１の前板にはスリット状の紙排出口１１
ａが形成されている。この筺体１１の底板には、対向す
る一対の側板１３ａ，１３ｂが立設され、これら両側板
１３ａ，１３ｂの上端には、紙Ｐが載置される載置台１
２が架設されており、この載置台１２上には対向する一
対のガイド板１４，１４が立設されている。Next, the paper feeder 10 will be described with reference to FIGS. The paper feeding device 10 is provided with a substantially box-shaped housing 11 having an open upper part and a rear surface. A slit-shaped paper outlet 11 is provided on a front plate of the housing 11.
a is formed. A pair of opposing side plates 13a, 13b are erected on the bottom plate of the housing 11, and the mounting table 1 on which the paper P is mounted is placed on the upper ends of these side plates 13a, 13b.
A pair of guide plates 14, 14 facing each other is erected on the mounting table 12.
【００１０】両側板１３ａ，１３ｂの前端部間には軸１
６が横架され、この軸１６には５個のピンチローラ１７
が回転自在に支持されている。軸１６の下方には、軸１
８が両側板１３ａ，１３ｂ間に回転自在に支持され、こ
の軸１８には上述したピンチローラ１７に対接する供給
ローラ１９が軸着され、軸１８の側板１３ｂから突出し
た突出部には、ギア２０が軸着されている。A shaft 1 is provided between the front ends of both side plates 13a and 13b.
6, and five pinch rollers 17 are mounted on the shaft 16.
Are rotatably supported. Below the shaft 16, the shaft 1
8 is rotatably supported between both side plates 13a and 13b. A supply roller 19 is mounted on the shaft 18 so as to be in contact with the pinch roller 17 described above. 20 is mounted on the shaft.
【００１１】両側板１３ａ，１３ｂの軸１６の後方に
は、軸２２が回転自在に支持され、この軸２２の略中央
部には、分離ローラ２３が軸着され、軸２２の側板１３
ｂから突出した突出端部には、ギア２４が軸着されてい
る。軸２２の下方には、軸２５が両側板１３ａ，１３ｂ
間に回転自在に支持され、この軸２５には上述した分離
ローラ２３に対接する摩擦ローラ２６が軸着され、軸２
５の側板１３ｂから突出した突出端部には、上述したギ
ア２４と噛合するギア２７が軸着されている。A shaft 22 is rotatably supported behind the shaft 16 on both side plates 13a and 13b, and a separation roller 23 is mounted on the shaft 22 at a substantially central portion thereof.
A gear 24 is axially mounted on the protruding end protruding from b. Below the shaft 22, the shaft 25 is provided with both side plates 13a, 13b.
The shaft 25 is rotatably supported, and a friction roller 26 that is in contact with the separation roller 23 described above is axially mounted on the shaft 25.
A gear 27 that meshes with the above-described gear 24 is axially mounted on a protruding end portion that protrudes from the side plate 13b.
【００１２】図４に示すように、本発明の特徴である摩
擦ローラ２６の外周面には、回転方向に対して交互に摩
擦係数の大きい部分２６ａと、摩擦係数の小さい部分２
６ｂとが複数対設けられている。摩擦係数の大きい部分
２６ａはゴムによって形成され、摩擦係数の小さい部分
２６ｂは樹脂または金属等によって形成され、これらは
一体に形成されている。ここで、紙Ｐと摩擦ローラ２６
の摩擦係数の大きい部分２６ａ間の摩擦係数が、紙Ｐと
分離ローラ２３間の摩擦係数よりも大きく、かつ紙Ｐと
摩擦ローラ２６の摩擦係数の小さい部分２６ｂ間の摩擦
係数が、紙Ｐと分離ローラ２３間の摩擦係数よりも小さ
く設定されている。また、紙Ｐと分離ローラ２３間の摩
擦係数が、紙Ｐどうしの摩擦係数よりも大きく設定され
ている。また、摩擦ローラ２６の周速が分離ローラ２３
の周速よりも遅くなるように、摩擦ローラ２６の外径が
分離ローラ２３の外径よりも小さく形成されている。As shown in FIG. 4, a portion 26a having a large friction coefficient and a portion 2a having a small friction coefficient are alternately arranged on the outer peripheral surface of the friction roller 26 which is a feature of the present invention.
6b. The portion 26a having a large coefficient of friction is formed of rubber, and the portion 26b having a small coefficient of friction is formed of resin, metal, or the like, which are integrally formed. Here, the paper P and the friction roller 26
Is larger than the friction coefficient between the paper P and the separation roller 23, and the friction coefficient between the paper P and the lower friction coefficient 26b of the friction roller 26 is between the paper P and the paper P. smaller than the friction coefficient between the separation roller 23
Is set well. Further, the friction coefficient between the paper P and the separation roller 23 is set to be larger than the friction coefficient between the papers P. Further, the peripheral speed of the friction roller 26 is
The outer diameter of the friction roller 26 is smaller than the outer diameter of the separation roller 23 so as to be lower than the peripheral speed of the friction roller 26.
【００１３】図３において、側板１３ｂに植設したピン
３１には、ギア２９と噛合する大径ギア３０ａが回転自
在に支持され、このギア３０ａには、上述したギア２７
と噛合する小径ギア３０ｂが同軸上に一体に形成されて
いる。側板１３ｂに植設したピン３３には、ギア２７と
噛合する小径ギア３２ｂが回転自在に支持され、このギ
ア３２ｂには、上述したギア２０と噛合する大径ギア３
２ａが同軸上に一体に形成されている。In FIG. 3, a large-diameter gear 30a meshing with a gear 29 is rotatably supported on a pin 31 implanted in the side plate 13b.
And a small diameter gear 30b is formed integrally on the same axis. A small-diameter gear 32b meshing with the gear 27 is rotatably supported on the pin 33 implanted in the side plate 13b, and the large-diameter gear 3 meshing with the gear 20 described above is provided on the gear 32b.
2a is integrally formed coaxially.
【００１４】摩擦ローラ２６の回転が一体に形成された
小径ギア３２ｂおよび大径ギア３２ａを介して、供給ロ
ーラ１９に伝達されていることにより、供給ローラ１９
の周速が摩擦ローラ２６の周速よりも速くなるように構
成されている。また、カッター４の周速が供給ローラ１
９の周速よりも速くなるように設定されている。上述し
た分離ローラ２３と摩擦ローラ２６との対接点の近傍か
ら筺体１１の紙排出口１１ａとの間には、対向する一対
の給紙板３４，３４が設けられ、これら給紙板３４，３
４によって給紙路３５が形成され、上述したピンチロー
ラ１６と供給ローラ１９とは、給紙板３４に形成した窓
（図示せず）から給紙路３５に臨んでいる。The rotation of the friction roller 26 is transmitted to the supply roller 19 through the integrally formed small-diameter gear 32b and large-diameter gear 32a.
Is configured to be faster than the peripheral speed of the friction roller 26. In addition, the peripheral speed of the cutter 4 is controlled by the supply roller 1.
9 is set to be higher than the peripheral speed. A pair of opposed paper feed plates 34, 34 are provided between the vicinity of the contact point between the separation roller 23 and the friction roller 26 and the paper discharge port 11 a of the housing 11.
4 form a paper feed path 35, and the above-described pinch roller 16 and supply roller 19 face the paper feed path 35 from a window (not shown) formed in the paper feed plate 34.
【００１５】次に、このような構成の紙片細断装置にお
ける給紙装置の給紙動作を説明する。給紙装置１０を載
置部２上に載置すると、給紙路３５がガイド部２ａの傾
斜と同じ傾斜となり、紙排出口１１ａがガイド部２ａに
臨む。大量の紙Ｐを給紙装置１０の載置台１２上に載置
すると、載置台１２の傾斜に沿って紙Ｐが載置台１２上
を滑降し紙Ｐの先端が摩擦ローラ２６と分離ローラ２３
との対接部に接触する。Next, the sheet feeding operation of the sheet feeding device in the sheet shredding device having such a configuration will be described. When the paper feeding device 10 is mounted on the mounting portion 2, the paper feeding path 35 has the same inclination as the inclination of the guide portion 2a, and the paper discharge port 11a faces the guide portion 2a. When a large amount of paper P is placed on the mounting table 12 of the paper feeding device 10, the paper P slides down on the mounting table 12 along the inclination of the mounting table 12, and the leading end of the paper P is moved by the friction roller 26 and the separation roller 23.
Contact with the contact part.
【００１６】モータ２８を駆動させると、このモータ２
８の回転は、図３において、ギア２９，３０ａ，３０ｂ
を介してギア２７に伝達され、軸２５を介して摩擦ロー
ラ２６が図中反時計方向に回転するとともに、ギア２７
に噛合するギア２４および軸２２を介して分離ローラ２
３が図中時計方向に回転する。また、ギア２７に噛合す
るギア３２ｂが回転するので、ギア３２ａも回転し、ギ
ア３２ａに噛合するギア２０および軸１８を介して供給
ローラ１９が図中反時計方向に回転するので、この供給
ローラ１９に対接するピンチローラ１７が図中時計方向
に回転する。When the motor 28 is driven, the motor 2
8, the rotation of the gears 29, 30a, 30b in FIG.
, The friction roller 26 rotates counterclockwise in FIG.
Roller 2 via a gear 24 and a shaft 22 meshing with
3 rotates clockwise in the figure. Since the gear 32b meshing with the gear 27 rotates, the gear 32a also rotates, and the supply roller 19 rotates counterclockwise in the drawing via the gear 20 and the shaft 18 meshing with the gear 32a. The pinch roller 17 in contact with 19 rotates clockwise in the figure.
【００１７】摩擦ローラ２６の外周面には、周方向に交
互に摩擦係数の大きい部分２６ａと、摩擦係数の小さい
部分２６ｂとが複数対設けられている。また、紙Ｐと摩
擦ローラ２６の摩擦係数の大きい部分２６ａ間の摩擦係
数が、紙Ｐと分離ローラ２３間の摩擦係数よりも大き
く、かつ紙Ｐと分離ローラ２３間の摩擦係数が、紙Ｐど
うしの摩擦係数よりも大きく設定されている。したがっ
て、紙Ｐの最下層の紙が摩擦係数の大きい部分２６ａに
接触すると、この最下層の１枚だけが摩擦ローラ２６の
回転に随伴して給紙路３５側に搬送される。On the outer peripheral surface of the friction roller 26, a plurality of pairs of portions 26a having a large friction coefficient and portions 26b having a small friction coefficient are provided alternately in the circumferential direction. Further, the friction coefficient between the paper P and the portion 26a having a large friction coefficient between the friction roller 26 is larger than the friction coefficient between the paper P and the separation roller 23, and the friction coefficient between the paper P and the separation roller 23 is It is set to be larger than the friction coefficient between the two. Therefore, when the lowermost layer of the paper P comes into contact with the portion 26a having a large coefficient of friction, only one of the lowermost layers is conveyed to the paper feed path 35 along with the rotation of the friction roller 26.
【００１８】摩擦ローラ２６がわずかに回動し、紙Ｐの
最下層の紙が摩擦係数の小さい部分２６ｂに接触する
と、紙Ｐと摩擦ローラ２６の摩擦係数の小さい部分２６
ｂ間の摩擦係数が、紙Ｐと分離ローラ２３間の摩擦係数
よりも小さく設定されていることにより、２枚目の紙Ｐ
が分離ローラ２３の回転に随伴して給紙路３５側に搬送
される。これを何度か繰り返すことにより、数枚の紙Ｐ
が摩擦ローラ２６と分離ローラ２３とによって給紙路３
５内に重なった状態で送られ、紙排出口１１ａからガイ
ド部２ａ上に排出される。重なった状態で送られた数枚
の紙Ｐはガイド部２ａ上を滑降し、紙検出スイッチ３を
ＯＮとするので、カッタ４が回転を開始し、数枚の紙Ｐ
は一度にカッター４によって細断され、屑収納部５に収
納される。When the friction roller 26 slightly rotates and the lowermost layer of the paper P comes into contact with the portion 26b having a small coefficient of friction, the portion of the paper P and the friction roller 26 having a small coefficient of friction 26
b is set smaller than the friction coefficient between the paper P and the separation roller 23, the second paper P
Is conveyed to the paper feed path 35 along with the rotation of the separation roller 23. By repeating this several times, several sheets of paper P
Is fed by the friction roller 26 and the separation roller 23.
5, and is discharged from the paper discharge port 11a onto the guide portion 2a. Several sheets of paper P sent in an overlapped state slide down on the guide portion 2a and turn on the paper detection switch 3, so that the cutter 4 starts rotating, and several sheets of paper P
Are cut at a time by the cutter 4 and stored in the waste storage unit 5.
【００１９】このように、数枚の紙Ｐを摩擦ローラ２６
と分離ローラ２３とによって積極的に重なった状態で送
り一度にカッター４によって細断するので、すべての紙
Ｐを細断する時間が短縮される。ここで、摩擦ローラ２
６の周速を分離ローラ２３の周速よりも遅く設定してい
ることにより、摩擦ローラ２６の摩擦係数の小さい部分
２６ｂに紙Ｐが接触しているときに、分離ローラ２３に
よって積極的に紙Ｐが重なった状態で送られる。したが
って、紙Ｐの重なり量が不足するようなことがない。As described above, several sheets of paper P are transferred to the friction roller 26.
The sheet is cut by the cutter 4 at a time in a state in which the paper P is positively overlapped by the separation roller 23, and the time for cutting all the paper P is reduced. Here, the friction roller 2
6 is set to be lower than the peripheral speed of the separation roller 23, the separation roller 23 actively engages the paper P when the paper P is in contact with the portion 26b of the friction roller 26 having a small friction coefficient. Sent with P overlapping. Therefore, the overlapping amount of the paper P does not become insufficient.
【００２０】また、供給ローラ１９の周速が摩擦ローラ
２６の周速よりも速くなるように設定されていることに
より、紙Ｐが摩擦ローラ２６と分離ローラ２３とによっ
て搬送される速度よりも供給ローラ１９とピンチローラ
１６とによって搬送される速度よりも遅い。したがっ
て、供給ローラ１９において紙Ｐが詰まるようなことが
ない。また、カッター４の周速が供給ローラ１９の周速
よりも速くなるように設定されていることにより、カッ
ター４において紙Ｐが詰まるようなことがない。Further, since the peripheral speed of the supply roller 19 is set to be higher than the peripheral speed of the friction roller 26, the supply speed of the paper P is higher than the speed at which the paper P is transported by the friction roller 26 and the separation roller 23. It is slower than the speed at which the sheet is conveyed by the roller 19 and the pinch roller 16. Therefore, the paper P is not jammed in the supply roller 19. Further, since the peripheral speed of the cutter 4 is set to be higher than the peripheral speed of the supply roller 19, the paper P is not jammed in the cutter 4.
【００２１】ここで、紙Ｐの重なり量の設定について、
図５に基づいて説明する。図５は本発明に係る紙片細断
装置における給紙装置において、重なった状態で送る動
作を説明するためのモデル図である。なお、図５におい
ては、説明の便宜上、摩擦係数の小さい部分２６ｂを摩
擦ローラ２６の外周に１箇所だけ設けた場合としてい
る。また、紙Ｐの全長をＬとし、摩擦ローラ２６の直径
をＤとしている。同図（ａ）において、最下層の紙Ｐ１
が、摩擦ローラ２６の摩擦係数の大きい部分２６ａによ
って、１枚だけ矢印Ａ方向に距離Ｌ１だけ搬送される
と、紙Ｐ１には摩擦係数の小さい部分２６ｂが対接す
る。このとき、Ｌ１は、摩擦ローラ２６の外周の長さに
略同じとなるので、Ｌ１≒πＤとなる。Here, the setting of the overlapping amount of the paper P is as follows.
A description will be given based on FIG. FIG. 5 is a model diagram for explaining an operation of feeding in an overlapped state in the sheet feeding device in the sheet shredding device according to the present invention. In FIG. 5, for convenience of description, only a portion 26 b having a small friction coefficient is provided on the outer periphery of the friction roller 26. The total length of the paper P is L, and the diameter of the friction roller 26 is D. In FIG. 7A, the lowermost layer of paper P1
However, when only one sheet is conveyed by the distance L1 in the direction of the arrow A by the portion 26a of the friction roller 26 having the large friction coefficient, the sheet P1 comes into contact with the portion 26b having the small friction coefficient. At this time, L1 is substantially equal to the length of the outer periphery of the friction roller 26, and therefore L1 ≒ πD.
【００２２】紙Ｐ１に摩擦係数の小さい部分２６ｂが対
接すると、上述したように、２枚目の紙Ｐ２が分離ロー
ラ２３によって重なった状態で送られ始め、同図（ｂ）
に示すように、紙Ｐ２が紙Ｐ１と重なりながら、矢印Ａ
方向に搬送される。紙Ｐ２が距離Ｌ１だけ搬送される
と、摩擦ローラ２６の摩擦係数の小さい部分２６ｂが紙
Ｐ１に対接し、３枚目の紙Ｐ３が重なった状態で送られ
始めるので、紙Ｐ１，Ｐ２，Ｐ３が互いに距離Ｌ１だけ
位置ずれを起こしてうろこ状に重なり合う。したがっ
て、紙Ｐ１と一緒に重なった状態で送られる紙Ｐの枚数
は、紙Ｐの全長Ｌと位置ずれ長さＬ１とによって決ま
り、位置ずれ長さＬ１は摩擦ローラ２６の直径Ｄによっ
て決まる。このため、紙Ｐの全長Ｌに対して、摩擦ロー
ラ２６の直径Ｄを調整することにより、適正な重なり量
を設定することができ、カッタ４による細断能力に応じ
て適宜重なり量を選択することができる。When the portion 26b having a small coefficient of friction comes into contact with the paper P1, the second paper P2 starts to be fed in a state of being overlapped by the separation roller 23, as described above.
As shown in the figure, while the paper P2 overlaps the paper P1, the arrow A
Conveyed in the direction. When the paper P2 is conveyed by the distance L1, the portion 26b of the friction roller 26 having a small coefficient of friction comes into contact with the paper P1, and the third paper P3 starts to be fed in an overlapping state, so that the papers P1, P2, P3 Are displaced from each other by a distance L1, and overlap like scales. Therefore, the number of sheets P fed in a state of being overlapped with the sheet P1 is determined by the total length L of the sheet P and the displacement length L1, and the displacement length L1 is determined by the diameter D of the friction roller 26. For this reason, by adjusting the diameter D of the friction roller 26 with respect to the entire length L of the paper P, an appropriate overlapping amount can be set, and the overlapping amount is appropriately selected according to the cutting ability of the cutter 4. be able to.
【００２３】同図においては、摩擦ローラ２６に摩擦係
数の小さい部分２６ｂを１箇所設けた場合を説明した
が、２箇所設けた場合には、位置ずれ長さＬ１が１／２
になるので、重なり合う枚数が２倍になる。したがっ
て、摩擦係数の小さい部分２６ｂの数を調整することに
よっても、紙Ｐの適正な重なり量を設定することができ
る。In the same figure, the case where one portion 26b having a small coefficient of friction is provided on the friction roller 26 has been described, but when two portions are provided, the displacement length L1 is １ ／.
, The number of overlapping sheets is doubled. Therefore, an appropriate overlapping amount of the paper P can be set by adjusting the number of the portions 26b having a small coefficient of friction.
【００２４】[0024]
【発明の効果】以上説明したように、請求項１記載の発
明によれば、１度に数枚の紙を一度に細断でき、かつ紙
の重なり量が不足するようなことがないので、細断の時
間短縮が確実に行われる。As described above, according to the first aspect of the present invention, several sheets of paper can be cut at a time, and the amount of overlapping paper does not become insufficient. The time for shredding can be reduced reliably.
【００２５】[0025]
【００２６】また、請求項２記載の発明によれば、紙の
搬送経路中やカッターにおいて紙詰まりを起こすような
ことがない。Further, according to the second aspect of the present invention, paper jam does not occur in the paper transport path or in the cutter.
【図１】 本発明に係る紙片細断装置の概略の構成を示
す断面図である。FIG. 1 is a sectional view showing a schematic configuration of a paper shredding apparatus according to the present invention.
【図２】 本発明に係る紙片細断装置における給紙装置
の平断面図である。FIG. 2 is a plan sectional view of a sheet feeding device in the sheet shredding device according to the present invention.
【図３】 図２におけるIII-III 線断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 2;
【図４】 本発明に係る紙片細断装置における給紙装置
において、分離ローラを拡大して示す要部の側面図であ
る。FIG. 4 is a side view of a main part of the sheet feeding device in the sheet shredding device according to the present invention, showing a separation roller in an enlarged manner.
【図５】 本発明に係る紙片細断装置における給紙装置
において、重なった状態で送る動作を説明するためのモ
デル図である。FIG. 5 is a model diagram for explaining an operation of feeding in an overlapped state in the sheet feeding device in the sheet shredding device according to the present invention.
１…紙片細断装置、４…カッター、１０…給紙装置、１
９…供給ローラ、２３…分離ローラ、２６…摩擦ロー
ラ、２６ａ…摩擦係数が大きい部分、２６ｂ…摩擦係数
が小さい部分、２８…モータ、Ｐ…紙。DESCRIPTION OF SYMBOLS 1 ... Sheet shredding device, 4 ... Cutter, 10 ... Sheet feeding device, 1
9: Supply roller, 23: Separation roller, 26: Friction roller, 26a: Part with large friction coefficient, 26b: Part with small friction coefficient, 28: Motor, P: Paper.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−275339（ＪＰ，Ａ) 特開 昭60−102344（ＪＰ，Ａ) 特開 昭57−126337（ＪＰ，Ａ) 特開 昭63−176232（ＪＰ，Ａ) 特開 昭58−6846（ＪＰ，Ａ) 実開 昭60−61228（ＪＰ，Ｕ) 実開 平１−58538（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B65H 3/52 B65H 5/06 G03G 15/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-275339 (JP, A) JP-A-60-102344 (JP, A) JP-A-57-126337 (JP, A) JP-A-63-63 176232 (JP, A) JP-A-58-6846 (JP, A) JP-A-60-61228 (JP, U) JP-A-1-58538 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B65H 3/52 B65H 5/06 G03G 15/00
Claims (2)
えられ、紙と摩擦ローラ間の摩擦係数が紙と分離ローラ
間の摩擦係数よりも大きく、紙と分離ローラ間の摩擦係
数が紙と紙との間の摩擦係数よりも大きく設定され、こ
れら両ローラによって複数枚の紙を分離し、細断するカ
ッタに給紙する紙片細断装置における給紙装置におい
て、前記摩擦ローラの周面には、周方向に交互に摩擦係
数の大きい部分と摩擦係数の小さい部分とが設けられ、
前記摩擦ローラの周速を前記分離ローラの周速よりも遅
くしたことを特徴とする紙片細断装置における給紙装
置。A friction coefficient between the paper and the friction roller is greater than a friction coefficient between the paper and the separation roller; and a friction coefficient between the paper and the separation roller is greater than the friction coefficient between the paper and the separation roller. The friction coefficient is set to be larger than the friction coefficient between the two rollers. , A portion having a large friction coefficient and a portion having a small friction coefficient are provided alternately in the circumferential direction ,
The peripheral speed of the friction roller is slower than the peripheral speed of the separation roller.
Paper feeding device in paper shredding device, characterized in that Kushida.
えられ、紙と摩擦ローラ間の摩擦係数が紙と分離ローラ
間の摩擦係数よりも大きく、紙と分離ローラ間の摩擦係
数が紙と紙との間の摩擦係数よりも大きく設定され、こ
れら両ローラによって複数枚の紙を分離し、細断するカ
ッタに給紙する紙片細断装置における給紙装置におい
て、前記摩擦ローラの周面には、周方向に交互に摩擦係
数の大きい部分と摩擦係数の小さい部分とが設けられ、
前記摩擦ローラとカッタとの間にカッタに紙を給紙する
供給ローラを設け、この供給ローラの周速をカッタの周
速よりも遅くし、かつ摩擦ローラの周速を供給ローラの
周速よりも遅くしたことを特徴とする紙片細断装置にお
ける給紙装置。 2. A friction roller and a separation roller which are in contact with each other.
The friction coefficient between the paper and the friction roller is
Larger than the friction coefficient between the paper and the separation roller.
The number is set to be greater than the coefficient of friction between the paper and
These two rollers separate the paper and cut it into pieces.
Paper feeder in a paper shredder feeding paper
The circumferential surface of the friction roller alternately frictionally engages in the circumferential direction.
A part with a large number and a part with a small coefficient of friction are provided,
Feeding paper to the cutter between the friction roller and the cutter
A supply roller is provided, and the peripheral speed of the supply roller is
Speed and the peripheral speed of the friction roller
A paper shredding machine characterized by having a speed lower than the peripheral speed
Paper feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33702398A JP3324533B2 (en) | 1998-11-27 | 1998-11-27 | Paper feeder in paper shredder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33702398A JP3324533B2 (en) | 1998-11-27 | 1998-11-27 | Paper feeder in paper shredder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000159369A JP2000159369A (en) | 2000-06-13 |
| JP3324533B2 true JP3324533B2 (en) | 2002-09-17 |
Family
ID=18304741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33702398A Expired - Fee Related JP3324533B2 (en) | 1998-11-27 | 1998-11-27 | Paper feeder in paper shredder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3324533B2 (en) |
-
1998
- 1998-11-27 JP JP33702398A patent/JP3324533B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000159369A (en) | 2000-06-13 |
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