JPH08175697A - Paper feeder - Google Patents
Paper feederInfo
- Publication number
- JPH08175697A JPH08175697A JP32081894A JP32081894A JPH08175697A JP H08175697 A JPH08175697 A JP H08175697A JP 32081894 A JP32081894 A JP 32081894A JP 32081894 A JP32081894 A JP 32081894A JP H08175697 A JPH08175697 A JP H08175697A
- Authority
- JP
- Japan
- Prior art keywords
- tray member
- sheet
- paper
- tray
- sheets
- 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.)
- Pending
Links
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、積み重ねた紙葉から１
枚づつ送り出すようにした給紙装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a paper feeding device that feeds out one by one.
【０００２】[0002]
【従来の技術】従来のこの種の給紙装置としては、例え
ばパソコン用のプリンタに備えたものがある。すなわ
ち、プリンタの給紙口に向かって傾斜したトレイに紙を
重ねて載置し、１枚ずつプリンタに給紙することに用い
られる。2. Description of the Related Art As a conventional paper feeding device of this type, there is one provided in a printer for a personal computer, for example. That is, it is used for stacking sheets of paper on a tray inclined toward the sheet feed port of the printer and feeding the sheets one by one to the printer.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の技術では、紙が多量に装填できなかったり、
紙の種類や厚さが限定されたり、または多量に扱ったり
厚い紙に対応しようとすると機構が複雑で高価になると
いった問題点があった。However, in such a conventional technique, a large amount of paper cannot be loaded,
There is a problem in that the type and thickness of paper are limited, or when handling a large amount or trying to cope with thick paper, the mechanism becomes complicated and expensive.
【０００４】本発明は、このような従来の技術が有する
問題点に着目してなされたもので、多量の紙を簡単に装
填でき、扱える紙の種類や厚さの巾が広く、封筒も給紙
することができ、簡素な構造で安価、動作確実な給紙装
置を提供することを目的としている。The present invention has been made by paying attention to the problems of the prior art as described above. A large amount of paper can be easily loaded, the types of paper that can be handled and the width of the paper are wide, and envelopes can be supplied. It is an object of the present invention to provide a paper feeding device that can produce paper, has a simple structure, is inexpensive, and operates reliably.
【０００５】[0005]
【課題を解決するための手段】かかる目的を達成するた
めの本発明の要旨とするところは、以下の各項の発明に
存する。The gist of the present invention for achieving the above object resides in the inventions of the following items.
【０００６】１ 積み重ねた紙葉から１枚づつ送り出す
ようにした給紙装置において、積み重ねた紙葉（７０）
を載せるトレイ部材（２０）と、トレイ部材（２０）の
上昇機構（４０）と、トレイ部材（２０）の先端部を臨
んで配設されたせき止め部材（３０）とを備えて成り、
トレイ部材（２０）は、積み重ねた紙葉（７０）が置か
れる載置面部と、載置面の左右両側に積み重ねた紙葉を
揃えて保持する側部案内部材とを有し、前端は前方に開
放した開口が形成され、後端部の下部が枢支されて前部
が昇降可能に支持され、上昇機構（４０）は、トレイ部
材（２０）の前部が昇降するようトレイ部材（２０）に
係合し、紙葉の厚みに応じてトレイ部材（２０）の前部
を昇降させるよう動作するものであり、せき止め部材
（３０）は、トレイ部材（２０）の前端より後方に引っ
込んだ位置の下方で枢支され、トレイ部材（２０）の開
口に弾接して塞ぎ、重ねた紙葉（７０）の最上の１枚分
が上端縁を乗り越え可能に配設されるせき板（３１）を
有し、トレイ部材（２０）の前部の昇降に従動するよう
付勢されていることを特徴とする給紙装置（１０）。[0006] In a paper feeding device adapted to feed the stacked paper sheets one by one, the stacked paper sheets (70)
A tray member (20) on which the tray is placed, a raising mechanism (40) for the tray member (20), and a damming member (30) arranged so as to face the tip of the tray member (20),
The tray member (20) has a placement surface portion on which the stacked paper sheets (70) are placed, and side guide members for aligning and holding the stacked paper sheets on both left and right sides of the placement surface, and the front end is forward. An open opening is formed in the rear end of the tray member (20) so that the lower part of the rear end is pivotally supported to support the front part so that the front part can move up and down. ) To move the front portion of the tray member (20) up and down according to the thickness of the paper sheet, and the dam member (30) is retracted rearward from the front end of the tray member (20). A weir plate (31) which is pivotally supported below the position, is elastically contacted with the opening of the tray member (20) and is closed, and the uppermost one sheet of the stacked paper sheets (70) is arranged to be able to pass over the upper edge. And is biased to follow the elevation of the front of the tray member (20). Sheet feeding apparatus according to claim (10).
【０００７】２ 積み重ねた紙葉から１枚づつ送り出す
ようにした給紙装置において、積み重ねた紙葉（７０）
を載せるトレイ部材（２０）と、トレイ部材（２０）の
上昇機構（４０）と、トレイ部材（２０）の先端部を臨
んで配設されたせき止め部材（３０）と、送出機構（６
０）とを備えて成り、トレイ部材（２０）は、積み重ね
た紙葉（７０）が置かれる載置面部と、載置面の左右両
側に積み重ねた紙葉（７０）を揃えて保持する側部案内
部材とを有し、前端は開放した開口が形成され、後端部
の下部が枢支されて前部が昇降可能に支持され、上昇機
構（４０）は、トレイ部材（２０）の前部が昇降するよ
うトレイ部材（２０）に係合し、紙葉（７０）の厚みに
応じてトレイ部材（２０）の前部を昇降させるよう動作
するものであり、せき止め部材（３０）は、トレイ部材
（２０）の前端より後方に引っ込んだ位置の下方で枢支
され、トレイ部材（２０）の開口に弾接して塞ぎ、重ね
た紙葉（７０）の１枚分が上端縁を乗り越え可能に配設
されるせき板（３１）を有し、トレイ部材（２０）の前
部の昇降に従動するよう付勢され、送出機構（６０）
は、トレイ部材（２０）に重ねて保持された紙葉（７
０）の最上の１枚に接触して送り出すよう配設されてい
ることを特徴とする給紙装置（１０）。2 In a paper feeding device adapted to feed the stacked paper sheets one by one, the stacked paper sheets (70)
A tray member (20) on which the tray is placed, a raising mechanism (40) for the tray member (20), a damming member (30) arranged so as to face the tip of the tray member (20), and a delivery mechanism (6).
0) and the tray member (20) has a stacking surface part on which the stacked paper sheets (70) are placed, and a side for holding the stacked paper sheets (70) on the left and right sides of the stacking surface. A guide member, an opening is formed at the front end, the lower end of the rear end is pivotally supported, and the front part is supported so as to be able to move up and down. The raising mechanism (40) is arranged in front of the tray member (20). The tray engages with the tray member (20) so as to move up and down, and operates so as to move up and down the front portion of the tray member (20) according to the thickness of the paper sheet (70). The tray member (20) is pivotally supported below a position retracted rearward from the front end of the tray member (20) to elastically contact with the opening of the tray member (20) to close the tray member (20), and one sheet (70) of stacked sheets can cross over the upper edge. Has a weir plate (31) disposed in the front of the tray member (20) Yo is energized, the delivery mechanism (60)
Is a paper sheet (7) held over the tray member (20).
A sheet feeding device (10), which is arranged so as to come into contact with the uppermost one of (0) and feed it out.
【０００８】３ ２項記載の給紙装置において、送出機
構（６０）は、紙葉に上から当接する送りロール（６１
ａ，６１ｂ）と、送りロールを回転させる入力ギヤ（６
２）と、入力ギヤと略水平に配設され入力ギヤを回転さ
せる駆動ギヤ（６３）と、駆動ギヤを回転させるモータ
（６４）の軸（６５）とを機構ベース（６６ａ，６６
ｂ）に支持し、モータ（６４）を基台に固設し、機構ベ
ース（６６ａ，６６ｂ）は、駆動ギヤ（６３）の中心を
枢軸として送りロール側が昇降可能に枢支され、送りロ
ール（６１ａ，６１ｂ）が紙葉（７１）から離れて浮い
た上昇位置にあるよう付勢保持され、駆動ギヤ（６３）
が回動して回転力が伝達するときの機械的抵抗により送
りロール（６１ａ，６１ｂ）が下方に下がって紙葉に当
接するよう配設されていることを特徴とする給紙装置
（１０）。In the paper feeding apparatus described in Item 32, the feeding mechanism (60) has a feeding roll (61) that abuts against the sheet from above.
a, 61b) and an input gear (6
2), a drive gear (63) which is arranged substantially horizontally with the input gear and rotates the input gear, and a shaft (65) of a motor (64) which rotates the drive gear.
b), the motor (64) is fixed to the base, and the mechanism bases (66a, 66b) are pivotally supported by the feed roll side so that the center of the drive gear (63) is a pivot axis, and the feed roll (66a, 66b) is vertically movable. 61a, 61b) are urged and held so as to be in a raised position separated from the paper sheet (71), and the drive gear (63)
The paper feed device (10), characterized in that the feed rolls (61a, 61b) are arranged so as to move downward and come into contact with the paper sheet due to mechanical resistance when the rotary force is transmitted and the rotational force is transmitted. .
【０００９】[0009]
【作用】トレイ部材（２０）に積み重ねた紙葉（７０）
を載せると、トレイ部材（２０）の先端部を臨んで配設
されたせき止め部材（３０）は、トレイ部材（２０）の
前端より後方の位置の下方に配設された枢着手段（３
４）で枢支され、トレイ部材（２０）の開口に弾接して
塞ぎ、積み重ねた紙葉（７０）が滑落することを防ぐと
共に紙葉（７０）の前端を揃えている。Operation: Paper sheets (70) stacked on the tray member (20)
When the tray is placed on the tray member (20), the damming member (30) facing the tip of the tray member (20) is attached to the pivot member (3) below the front end of the tray member (20).
It is pivotally supported by 4) and is elastically closed by closing the opening of the tray member (20) to prevent the stacked paper sheets (70) from sliding off and align the front ends of the paper sheets (70).
【００１０】また、せき止め部材（３０）はトレイ部材
（２０）の前部の昇降に従動すると共に、常にせき板
（３１）の上端縁が重ねた紙葉（７０）の最上部を臨む
位置関係を維持しており、最上部の紙葉（７１）容易に
乗り越えられると同時に２枚目以降の紙葉が連行された
り滑落することがない。Further, the dam member (30) is driven by the raising and lowering of the front part of the tray member (20), and the upper edge of the dam plate (31) always faces the uppermost part of the stacked paper sheet (70). The uppermost paper sheet (71) can be easily overcome, and at the same time, the second and subsequent paper sheets are not entrained or slipped off.
【００１１】上昇機構（４０）はカム（４１）の先端部
でトレイ部材（２０）を担持し、カム（４１）の回動に
伴いトレイ部材（２０）を枢支軸（２１）を中心として
回動させることによってトレイ部材（２０）の前部を昇
降させる。The lifting mechanism (40) carries the tray member (20) at the tip of the cam (41), and the tray member (20) is rotated about the pivot shaft (21) as the cam (41) rotates. By rotating, the front part of the tray member (20) is raised and lowered.
【００１２】トレイ部材（２０）を最低位置にして紙葉
（７０）を載置し起動する。トレイ部材（２０）は後端
部下部の枢支軸（２１）を中心として上昇機構（４０）
によって回動し前部が昇降する。紙葉位置検出機構（５
０）の先端（５２）に最上の紙葉（７１）が接触して上
昇機構（４０）を停止させるとすなわち給紙位置とな
る。The tray member (20) is set to the lowest position and the paper sheet (70) is placed and activated. The tray member (20) is a lifting mechanism (40) centering on a pivot shaft (21) at the lower rear end.
It rotates and the front part moves up and down. Paper position detection mechanism (5
When the uppermost paper sheet (71) comes into contact with the leading end (52) of (0) and the lifting mechanism (40) is stopped, that is, the paper feed position is reached.
【００１３】給紙の信号で最上部の紙葉（７１）が送出
されると、紙葉の厚さだけ隙間が生じる。これを紙葉位
置検出機構（５０）が検知して上昇機構（４０）が起動
する。次の紙葉が給紙位置に合うと上昇機構（４０）は
停止される。When the uppermost sheet (71) is sent out in response to the sheet feeding signal, a gap corresponding to the thickness of the sheet is created. This is detected by the paper sheet position detection mechanism (50) and the raising mechanism (40) is activated. When the next sheet matches the sheet feeding position, the raising mechanism (40) is stopped.
【００１４】紙の送り出しは次のようにしてなされる。
送出機構（６０）は、送りロール（６１ａ，６１ｂ）が
紙葉（７１）から離れて浮いた上昇位置にあるよう自重
キャンセルばね（６７）によって付勢保持されている。The paper is sent out as follows.
The delivery mechanism (60) is biased and held by its own weight canceling spring (67) so that the delivery rolls (61a, 61b) are in a raised position in which they are separated from the paper sheet (71).
【００１５】給紙の信号により、送出機構（６０）の駆
動モータ（６４）が回転を始めると、駆動ギヤ（６３）
の回転に従動して送りロール側のギヤ（６２）が回転し
ようとするが、送りロール側のギヤには摩擦トルク調整
手段（６８）により適切な機械的抵抗が与えてあると共
に慣性モーメントが働くから、駆動モータ（６４）の回
転トルクＴは、駆動モータの軸（６５）を中心として送
出機構の機構ベース（６６ａ，６６ｂ）を回動させるよ
うに作用する。When the drive motor (64) of the feeding mechanism (60) starts to rotate by the signal of paper feeding, the drive gear (63)
The gear (62) on the feed roll side tries to rotate in accordance with the rotation of No. 1, but the gear on the feed roll side is given an appropriate mechanical resistance by the friction torque adjusting means (68) and the moment of inertia acts. Therefore, the rotation torque T of the drive motor (64) acts so as to rotate the mechanism bases (66a, 66b) of the delivery mechanism around the shaft (65) of the drive motor.
【００１６】送りロール（６１ａ，６１ｂ）を紙葉（７
１）から離れて浮いた上昇位置にあるよう付勢保持して
いる自重キャンセルばね（６７）の付勢力に打ち克って
機構ベース（６６ａ，６６ｂ）を回動させれば送りロー
ルは下方に下がって最上部の紙葉（７１）に当接する。The feed rolls (61a, 61b) are replaced with paper sheets (7
1) When the mechanism bases (66a, 66b) are rotated by overcoming the urging force of the self-weight canceling spring (67) which is urged and held so as to be in a lifted position apart from 1), the feed roll is moved downward. It descends and contacts the uppermost sheet (71).
【００１７】このとき駆動ギヤのトルクをＴ、送りロー
ルに付加するトルクをｔ、ギヤの軸間距離をｒ1 とする
と、送りロールを紙葉に押しつける押圧力Ｐは Ｐ＝Ｔ／ｒ1 となり、自重キャンセルばね（６７）の付勢力を必要最
小限にしておけば容易に送りロールを紙葉に当接させる
ことができる。At this time, if the torque of the drive gear is T, the torque applied to the feed roll is t, and the axial distance between the gears is r1, the pressing force P for pressing the feed roll against the paper sheet is P = T / r1, and the self-weight is If the urging force of the cancel spring (67) is set to the necessary minimum, the feed roll can be easily brought into contact with the sheet.
【００１８】送りロール（６１ａ，６１ｂ）と紙葉（７
１）の摩擦係数をμ1 、紙葉相互の摩擦係数をμ2 と
し、紙葉を送り出す最小限の力をＦとするとＦ＝μ1 ・
Ｐ＞μ2 ・Ｐの条件を満たせばよい。Feed rolls (61a, 61b) and paper sheets (7
If the friction coefficient in 1) is μ1, the friction coefficient between paper sheets is μ2, and the minimum force for feeding the paper sheets is F, then F = μ1.
It is only necessary to satisfy the condition of P> μ 2 · P.
【００１９】例えばゴムは摩擦係数が大きい事で周知で
あるから、送りロール（６１ａ，６１ｂ）をゴムとする
ことで μ1 ＞μ2 を満足する。For example, rubber is well known because of its large friction coefficient, and therefore μ1> μ2 is satisfied when the feed rolls (61a, 61b) are made of rubber.
【００２０】また、送りロールの軸と、送りロールが紙
葉に当接する位置が、送出機構の枢支軸に対してなす角
をθとすると、この力Ｆによって送りロールを下方に押
しつける分力 Ｆ・tan θがＰに加算される自己加圧作
用があって、紙送り方向には常に抵抗を上回る力が加わ
ることになり確実な紙送りができる。If the angle between the axis of the feed roll and the position where the feed roll contacts the paper sheet is θ, the force F pushes the feed roll downward. Since there is a self-pressurizing action in which F · tan θ is added to P, a force exceeding resistance is always applied in the paper feeding direction, and reliable paper feeding can be performed.
【００２１】また、紙葉を受け取る側である給紙先（８
０）の送り装置が本発明の給紙装置（１０）よりも早く
紙葉を引き込もうとしたとき、または本発明の給紙装置
が停止中に引き込もうとしたとき、Ｆは負数となって押
圧力Ｐは減殺されるから紙葉は抵抗無く引き出す事がで
きて無理がない。In addition, the paper feed destination (8
When the feeding device of 0) tries to pull in a sheet earlier than the sheet feeding device (10) of the present invention, or when the sheet feeding device of the present invention tries to pull it in, F becomes a negative number and the pressing force is decreased. Since P is diminished, the paper sheet can be pulled out without resistance and it is reasonable.
【００２２】[0022]
【実施例】以下、図面に基づき本発明の一実施例を説明
する。各図は本発明の一実施例を示している。図１に示
すように、給紙装置１０はトレイ部材２０とせき止め部
材３０とトレイ部材の上昇機構４０と紙葉位置検出機構
５０と送出機構６０から成る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Each drawing shows an embodiment of the present invention. As shown in FIG. 1, the sheet feeding device 10 includes a tray member 20, a dam member 30, a tray member raising mechanism 40, a sheet position detecting mechanism 50, and a feeding mechanism 60.
【００２３】トレイ部材２０は紙葉を積み重ねて載置す
る平面と、紙葉を揃えて保持する図示しない側部案内部
材と先端下部のローラ２２から成り、後端部の下部が図
示しない基台の枢支軸２１に枢着されて前部が昇降可能
に支持されている。The tray member 20 is composed of a flat surface on which paper sheets are stacked and placed, a side guide member (not shown) for holding the paper sheets in alignment and a roller 22 at the lower end of the leading end, and a lower part of the rear end portion is not shown at the base. Is pivotally attached to a pivot shaft 21 of which the front portion is supported so as to be able to move up and down.
【００２４】せき止め部材３０はせき板３１と取り付け
ステー３２から成り、トレイ部材２０の昇降に従動し、
せき板３１が常にトレイ部材２０の前部開口に弾接する
よう付勢してある。ローラ２２がせき板３１にトレイ部
材２０の先端が直接摺動しないよう僅かに突出して設け
てある。せき板３１の上端縁３３が積み重ねた紙葉７０
の最上の１枚７１が容易に乗り越えられる程度に僅かに
突出する位置関係を常時維持しながらせき止め部材３０
をトレイ部材２０の昇降に従動するよう枢着手段３４を
図示しない基台に配設してある。The dam member 30 is composed of a dam plate 31 and a mounting stay 32, and is driven by the elevation of the tray member 20.
The weir plate 31 is always biased so as to elastically contact the front opening of the tray member 20. The roller 22 is provided so as to slightly project from the weir plate 31 so that the tip of the tray member 20 does not directly slide. Paper sheet 70 in which the upper edge 33 of the weir board 31 is stacked
Of the dam member 30 while always maintaining a positional relationship in which the uppermost piece 71 of the
A pivoting means 34 is arranged on a base (not shown) so as to follow up and down of the tray member 20.
【００２５】上昇機構４０はカム４１と枢着手段４２と
ナット４３とスクリュー４４と駆動モータ４５から成
り、カム４１はトレイ部材２０を先端部で担持し枢着手
段４２を中心に回動する。カム４１の基端部にはナット
４３が枢着され、ナット４３にスクリュー４４が螺嵌さ
れている。スクリュー４４はモータ４５で駆動される。
モータ４５は図示しない基台に枢着してある。The lifting mechanism 40 comprises a cam 41, a pivoting means 42, a nut 43, a screw 44 and a drive motor 45. The cam 41 carries the tray member 20 at its tip and rotates about the pivoting means 42. A nut 43 is pivotally attached to the base end of the cam 41, and a screw 44 is screwed into the nut 43. The screw 44 is driven by a motor 45.
The motor 45 is pivotally attached to a base (not shown).
【００２６】紙葉位置検出機構５０は例えばリミットス
イッチであり、その基端部５１は図示しない基台に固着
し、常時は上昇機構４０のモータ４５を駆動する電源回
路を閉じ、先端５２に紙葉が接触すると回路を開くよう
に付勢してある。The paper sheet position detecting mechanism 50 is, for example, a limit switch, the base end portion 51 of which is fixed to a base (not shown), the power supply circuit for driving the motor 45 of the raising mechanism 40 is normally closed, and the paper is attached to the front end 52. It is biased to open the circuit when the leaves come into contact.
【００２７】図２および図３は送出機構を示しており、
送出機構６０は紙葉７１に上から当接する送りロール６
１ａ，６１ｂと、送りロール６１ａ，６１ｂと同軸に固
着された入力ギヤ６２と、入力ギヤ６２と略水平に配設
され入力ギヤ６２を回転させる駆動ギヤ６３と、駆動ギ
ヤ６３を回転させるモータ６４の軸６５とを機構ベース
６６ａ，６６ｂに支持し、入力ギヤ６２と機構ベース６
６ｂの間に摩擦トルク調整手段６８を介設して成る。摩
擦トルク調整手段６８は入力ギヤ６２と機構ベース６６
ａ，６６ｂの回転接触面の接触圧力をばね６９で調整で
きるようにしてある。2 and 3 show the delivery mechanism,
The delivery mechanism 60 is a delivery roll 6 that contacts the sheet 71 from above.
1a, 61b, an input gear 62 fixed coaxially with the feed rolls 61a, 61b, a drive gear 63 arranged substantially horizontally with the input gear 62 for rotating the input gear 62, and a motor 64 for rotating the drive gear 63. The shaft 65 of the mechanism base 66a, 66b is supported by the input gear 62 and the mechanism base 6
Friction torque adjusting means 68 is provided between 6b. The friction torque adjusting means 68 includes an input gear 62 and a mechanism base 66.
The contact pressure of the rotating contact surfaces of a and 66b can be adjusted by the spring 69.
【００２８】モータ６４は基台に固設し、機構ベース６
６ａ，６６ｂは、駆動ギヤ６３の中心を枢軸として送り
ロール６１ａ，６１ｂ側が昇降可能に枢支され、送りロ
ール６１ａ，６１ｂが紙葉７１から離れて浮いた上昇位
置にあるよう自重キャンセルばね６７によって付勢保持
され、駆動ギヤ６３が回動して回転力が伝達されるとき
の機械的抵抗により送りロール６１ａ，６１ｂが下方に
下がって紙葉７１に当接するよう配設して構成されてい
る。The motor 64 is fixed to the base, and the mechanism base 6
6a and 66b are pivotally supported by the feed rolls 61a and 61b so that they can be moved up and down with the center of the drive gear 63 as a pivot, and the feed rolls 61a and 61b are separated by the weight canceling spring 67 so as to be in a raised position away from the sheet 71. The feed rolls 61a and 61b are arranged so as to be lowered and come into contact with the sheet 71 due to mechanical resistance when the drive gear 63 is urged and held and the rotational force is transmitted. .
【００２９】次に作用を説明する。図１において、トレ
イ部材２０には積み重ねた紙葉７０が載置して待機して
いる。トレイ部材２０の先端部を臨んで配設されたせき
止め部材３０は、トレイ部材２０の前端より後方の位置
の下方に配設された枢着手段３４で枢支され、トレイ部
材２０の開口に弾接して塞ぎ、積み重ねた紙葉７０が滑
落することを防ぐと共に紙葉７０の前端を揃えている。
ローラ２２がトレイ部材２０の先端僅かに突出して設け
てあってせき板３１はトレイ部材２０に直接摺動しな
い。Next, the operation will be described. In FIG. 1, stacked paper sheets 70 are placed on the tray member 20 and are on standby. The damming member 30 disposed so as to face the front end portion of the tray member 20 is pivotally supported by a pivoting means 34 disposed below a position rearward of the front end of the tray member 20, and is elastically attached to the opening of the tray member 20. The paper sheets 70 that are in contact with each other are closed to prevent the stacked paper sheets 70 from sliding down, and the front ends of the paper sheets 70 are aligned.
Since the roller 22 is provided so as to slightly project from the tip of the tray member 20, the weir plate 31 does not directly slide on the tray member 20.
【００３０】また、せき止め部材３０はトレイ部材の前
部の上昇に従動すると共に、常にせき板３１の上端縁３
３が重ねた紙葉７０の最上部を僅かに突出する位置関係
を維持しているから最上部の紙葉７１が容易に乗り越え
られると同時に２枚目以降の紙葉が連行されたり滑落す
ることがない。The dam member 30 is driven by the upward movement of the front portion of the tray member, and is always at the upper edge 3 of the dam plate 31.
3 maintains a positional relationship in which the uppermost sheet 70 of the stacked sheets 70 slightly protrudes, so that the uppermost sheet 71 can easily be overcome, and at the same time, the second and subsequent sheets can be entrained or slipped off. There is no.
【００３１】上昇機構４０はカム４１の先端部でトレイ
部材２０を担持し、カム４１の回動に伴いトレイ部材２
０を枢支軸２１を中心として回動させることによってト
レイ部材２０の前部を昇降させる。The raising mechanism 40 carries the tray member 20 at the tip of the cam 41, and the tray member 2 is rotated as the cam 41 rotates.
The front portion of the tray member 20 is moved up and down by rotating 0 around the pivot shaft 21.
【００３２】トレイ部材２０を最低位置にして紙葉７０
を載置し起動する。トレイ部材２０は後端部下部の枢支
軸２１を中心として上昇機構４０によって回動し前部が
上昇する。紙葉位置検出機構５０の先端５２に最上の紙
葉７１が接触して上昇機構４０を停止させるとすなわち
給紙位置となる。The paper sheet 70 is set with the tray member 20 at the lowest position.
Place and start. The tray member 20 is rotated by a lifting mechanism 40 about a pivot shaft 21 at a lower portion of the rear end portion, and the front portion is lifted. When the uppermost paper sheet 71 comes into contact with the tip 52 of the paper sheet position detecting mechanism 50 to stop the raising mechanism 40, that is, the paper feeding position is reached.
【００３３】給紙の信号で最上部の紙葉７１が送出され
ると、紙葉の厚さだけ隙間が生じる。これを紙葉位置検
出機構５０が検知して上昇機構４０が起動する。次の紙
葉が給紙位置に合うと上昇機構４０は停止される。When the uppermost sheet 71 is sent out in response to the sheet feeding signal, a gap is formed by the thickness of the sheet. This is detected by the paper sheet position detection mechanism 50 and the raising mechanism 40 is activated. When the next sheet matches the sheet feeding position, the raising mechanism 40 is stopped.
【００３４】図２において、送出機構６０は、送りロー
ル６１ａ，６１ｂが紙葉７１から離れて浮いた上昇位置
にあるよう自重キャンセルばね６７によって付勢保持さ
れている。In FIG. 2, the delivery mechanism 60 is biased and held by its own weight canceling spring 67 so that the delivery rolls 61a and 61b are in a raised position in which they are separated from the sheet 71 and floated.
【００３５】給紙の信号により、送出機構６０のモータ
６４が回転を始めると、駆動ギヤ６３の回転に従動して
送りロール側のギヤ６２が回転しようとするが、送りロ
ール側のギヤ６２には摩擦トルク調整手段６８により適
切な機械的抵抗が与えてあると共に慣性モーメントが働
くから、駆動モータ６４の回転トルクＴは、駆動モータ
の軸６５を中心として送出機構の機構ベース６６ａ，６
６ｂを回動させるように作用する。When the motor 64 of the feeding mechanism 60 starts to rotate in response to the paper feed signal, the gear 62 on the feed roll side tries to rotate following the rotation of the drive gear 63. Since the frictional torque adjusting means 68 gives an appropriate mechanical resistance and the moment of inertia acts, the rotational torque T of the drive motor 64 is centered on the shaft 65 of the drive motor.
It acts to rotate 6b.
【００３６】送りロール６１ａ，６１ｂを紙葉７１から
離れて浮いた上昇位置にあるよう付勢保持している自重
キャンセルばね６７の付勢力に打ち克って機構ベース６
６ａ，６６ｂを回動させれば送りロール６１ａ，６１ｂ
は下方に下がって紙葉に当接する。The mechanism base 6 is overcome by overcoming the urging force of the self-weight canceling spring 67 which urges and holds the feed rolls 61a and 61b so as to be in a raised position away from the paper sheet 71.
By rotating 6a and 66b, the feed rolls 61a and 61b
Comes down and contacts the paper sheet.
【００３７】このとき駆動ギヤのトルクをＴ、送りロー
ルに付加するトルクをｔギヤの軸間距離をｒ1 とする
と、送りロール６１ａ，６１ｂを紙葉７１に押しつける
押圧力Ｐは Ｐ＝Ｔ／ｒ1 となり、自重キャンセルばね６７の付勢力を必要最小限
にしておけば容易に送りロール６１ａ，６１ｂを紙葉に
当接させることができる。At this time, if the torque of the drive gear is T and the torque applied to the feed roll is the axial distance of the t gear to be r1, the pressing force P for pressing the feed rolls 61a and 61b against the sheet 71 is P = T / r1. Therefore, if the biasing force of the self-weight canceling spring 67 is minimized, the feed rolls 61a and 61b can be easily brought into contact with the sheet.
【００３８】送りロール６１ａ，６１ｂと紙葉の摩擦係
数をμ1 、紙葉相互の摩擦係数をμ2とすると、紙葉７
１を送り出す最小限の力をＦとするとＦ＝μ1 ・Ｐ＞μ
2 ・Ｐの条件を満たせばよい。If the friction coefficient between the feed rolls 61a and 61b and the paper sheet is μ1, and the friction coefficient between the paper sheets is μ2, the paper sheet 7
If the minimum force to send 1 is F, then F = μ1 ・ P> μ
2 ・ P condition should be satisfied.
【００３９】例えばゴムは摩擦係数が大きい事で周知で
あるから、送りロール６１ａ，６１ｂをゴムとすること
でも μ1 ＞μ2 を満足する。For example, rubber is well known because of its large friction coefficient, and therefore μ1> μ2 is satisfied even when the feed rolls 61a and 61b are made of rubber.
【００４０】また、この力Ｆによって送りロール６１
ａ，６１ｂを下方に押しつける分力Ｆ・tan θがＰに加
算される。The force F causes the feed roll 61 to move.
The component force F · tan θ that pushes a and 61b downward is added to P.
【００４１】このように本実施例では自己加圧作用があ
るから、紙送り方向には常に抵抗を上回る力が加わるこ
とになり確実な紙送りができる。As described above, in this embodiment, since there is a self-pressurizing action, a force that exceeds resistance is always applied in the paper feeding direction, and reliable paper feeding can be performed.
【００４２】また、紙葉を受け取る側である給紙先例え
ばプリンタ８０の送り装置が本実施例の給紙装置１０よ
りも早く紙葉を引き込もうとしたとき、または給紙装置
１０が停止中に引き込もうとしたとき、Ｆは負数となっ
て押圧力Ｐは減殺されるから紙葉は抵抗無く引き出す事
ができる。Further, when the paper feed destination on the side receiving the paper sheet, for example, the feeding device of the printer 80 tries to pull in the paper sheet earlier than the paper feeding device 10 of this embodiment, or when the paper feeding device 10 is stopped. When trying to pull in, F becomes a negative number and the pressing force P is reduced, so that the paper sheet can be pulled out without resistance.
【００４３】図４に示すように、送りロール６１ａ，６
１ｂで紙葉を送り出す時に、薄い紙葉は先端が破線のよ
うに上方に反りながらせき止め部材３０の上端を超えて
出ていく。従って紙葉位置検出機構５０は誤動作したり
紙葉の送り出しの抵抗とならないように、送りロール６
１ａ，６１ｂ付近とする。せき板の上端突出量が充分小
さいか又は上端縁の角をおとして滑らかにすれば、封筒
のように複層紙や厚い紙葉でも容易に乗り越えて送り出
すことができる。As shown in FIG. 4, the feed rolls 61a, 6a
When the paper sheet is sent out by 1b, the thin paper sheet goes out beyond the upper end of the damming member 30 while the tip warps upward as shown by the broken line. Therefore, the paper sheet position detection mechanism 50 does not malfunction and does not become a resistance for the paper sheet to be sent out.
1a and 61b. If the amount of protrusion of the upper end of the weir plate is sufficiently small or the corners of the upper end edge are smoothed, it is possible to easily get over and feed even multi-layered paper or thick paper like an envelope.
【００４４】なお、前記実施例においては、トレイ部材
２０を後端部下部で枢支しているが、後端部であれば他
の部位で枢支してもよい。Although the tray member 20 is pivotally supported at the lower portion of the rear end portion in the above embodiment, it may be pivotally supported at another portion as long as it is the rear end portion.
【００４５】また、上昇機構４０はカム４１を介する機
構に替えてトレイ部材２０に取り付けたスクリューに螺
嵌したナットを回転させて昇降させる機構等でもよく、
スクリューに替えて歯車や流体アクチュエータを利用し
てもよい。Further, the raising mechanism 40 may be replaced with a mechanism via the cam 41 and may be a mechanism for rotating a nut attached to a screw attached to the tray member 20 to raise and lower the nut,
A gear or a fluid actuator may be used instead of the screw.
【００４６】また、紙葉位置検出機構５０はリミットス
イッチに替えて、接触あるいは非接触のセンサでもよ
い。Further, the paper sheet position detecting mechanism 50 may be a contact or non-contact sensor instead of the limit switch.
【００４７】また、送出機構６０が紙葉を送出すると
き、給紙先の例えばプリンタ８０の送り装置８１に紙葉
の先端が達する送り量を運転したのち駆動モータ６４を
停止するように構成することができる。このようにすれ
ば給紙先の例えばプリンタ８０の送り装置８１が紙葉を
送り始めた後、本装置は紙葉の送りに抵抗とならず、ま
た、給紙先の例えばプリンタ８０の送り装置８１が停止
しているか又は遅い場合でも紙葉がたわんだり折れたり
することがない。Further, when the delivery mechanism 60 delivers a sheet, the drive motor 64 is stopped after operating the feed amount at which the leading edge of the sheet reaches the sheet feeding device 81 of the printer 80, for example. be able to. In this way, after the sheet feeding device 81 of the printer 80 starts feeding the sheet, this device does not resist sheet feeding, and the sheet feeding device of the printer 80, for example. Even when 81 is stopped or slow, the paper sheet does not bend or break.
【００４８】また、せき板３０の上端縁３３は、トレイ
部材２０の紙葉の最上面より少し突出させるよう設定す
るほか、封筒のような厚手の紙を対象とする場合は、１
枚分あるいは上から２枚目の紙の先端を止める位置まで
にしてもよく、対象に応じて適切に設定するのが良い。The upper edge 33 of the weir board 30 is set so as to slightly project from the uppermost surface of the paper sheet of the tray member 20, and when thick paper such as an envelope is targeted, it is set to 1.
It may be set to the position for stopping the leading edge of the second sheet or the sheet for one sheet, and it is preferable to set it appropriately according to the object.
【００４９】[0049]
【発明の効果】本発明に係る給紙装置によれば、構造が
簡素化され、自己加圧作用を有する送出機構により、摩
擦係数の差のみに依拠する送出原理を実現し、ゴム等を
利用した送出ロールで大きな摩擦係数差を得ることがで
きるので、１枚ずつ確実な給紙ができる給紙装置が得ら
れる。According to the paper feeding device of the present invention, the structure is simplified, and the feeding mechanism having the self-pressurizing action realizes the feeding principle that depends only on the difference in the friction coefficient, and uses the rubber or the like. Since a large difference in friction coefficient can be obtained with the above-mentioned delivery roll, a sheet feeding device that can reliably feed sheets one by one can be obtained.
【図１】本発明の一実施例に係る給紙装置を示す模式図
である。FIG. 1 is a schematic view showing a paper feeding device according to an embodiment of the present invention.
【図２】本発明の一実施例に係る給紙装置の送出機構の
正面図である。FIG. 2 is a front view of a feeding mechanism of the paper feeding device according to the embodiment of the present invention.
【図３】本発明の一実施例に係る給紙装置の送出機構の
平面図である。FIG. 3 is a plan view of a feeding mechanism of the paper feeding device according to the embodiment of the present invention.
【図４】本発明の一実施例に係る給紙装置の要部の作用
を示す模式図である。FIG. 4 is a schematic diagram showing an operation of a main part of the paper feeding device according to the embodiment of the present invention.
１０…給紙装置 ２０…トレイ部材 ２１…枢支軸 ２２…ローラ ３０…せき止め部材 ３１…せき板 ３２…取り付けステー ３３…せき板の上端縁 ３４…枢着手段 ４０…上昇機構 ４１…カム ４２…枢着手段 ４３…ナット ４４…スクリュー ４５…駆動モータ ５０…紙葉位置検出機構 ５１…基端部 ５２…先端 ６０…送出機構 ６１ａ，６１ｂ…送りロール ６２…入力ギヤ ６３…駆動ギヤ ６４…モータ ６５…モータ軸 ６６ａ，６６ｂ…機構ベース ６８…摩擦トルク調整手段 ６７…自重キャンセルばね ６９…ばね ７０…積み重ねた紙葉 ７１…紙葉の最上部 ８０…プリンタ ８１…送り装置 DESCRIPTION OF SYMBOLS 10 ... Paper feeder 20 ... Tray member 21 ... Pivot shaft 22 ... Roller 30 ... Damper member 31 ... Dam plate 32 ... Attachment stay 33 ... Upper edge of dam plate 34 ... Pivoting means 40 ... Ascending mechanism 41 ... Cam 42 ... Pivoting means 43 ... Nut 44 ... Screw 45 ... Drive motor 50 ... Sheet position detecting mechanism 51 ... Base end 52 ... Tip 60 ... Delivery mechanism 61a, 61b ... Feed roll 62 ... Input gear 63 ... Drive gear 64 ... Motor 65 ... Motor shafts 66a, 66b ... Mechanism base 68 ... Friction torque adjusting means 67 ... Self-weight canceling spring 69 ... Spring 70 ... Stacked paper sheets 71 ... Paper sheet top 80 ... Printer 81 ... Feeding device
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年１月１２日[Submission date] January 12, 1995
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】全図[Correction target item name] All drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図１】 FIG.
【図２】 [Fig. 2]
【図３】 [Figure 3]
【図４】 [Figure 4]
Claims (3)
にした給紙装置において、 積み重ねた紙葉を載せるトレイ部材と、該トレイ部材の
上昇機構と、該トレイ部材の先端部を臨んで配設された
せき止め部材とを備えて成り、 前記トレイ部材は、積み重ねた紙葉が置かれる載置面部
と、該載置面の左右両側に積み重ねた紙葉を揃えて保持
する側部案内部材とを有し、前端は前方に開放した開口
が形成され、後端部の下部が枢支されて前部が昇降可能
に支持され、 前記上昇機構は、前記トレイ部材の前部が昇降するよう
該トレイ部材に係合し、紙葉の厚みに応じて前記トレイ
部材の前部を昇降させるよう動作するものであり、 前記せき止め部材は、前記トレイ部材の前端より後方に
引っ込んだ位置の下方で枢支され、前記トレイ部材の開
口に弾接して塞ぎ、重ねた紙葉の１枚分が上端縁を乗り
越え可能に配設されるせき板を有し、前記トレイ部材の
前部の昇降に従動するよう付勢されていることを特徴と
する給紙装置。1. A sheet feeding device for feeding sheets one by one from a stack of sheets, a tray member on which the stacked sheets are placed, a mechanism for raising the tray members, and a front end of the tray members. The tray member, and a side guide member for aligning and holding the stacked paper sheets on the left and right sides of the mounting surface. An opening opening forward is formed at the front end, the lower portion of the rear end is pivotally supported, and the front portion is supported so as to be able to move up and down. The tray member is engaged with the tray member and operates so as to elevate and lower the front portion of the tray member according to the thickness of the sheet, and the dam member is pivoted below the position retracted rearward from the front end of the tray member. Supported on the opening of the tray member It is elastically contacted and closed, and has a weir plate that is arranged so that one sheet of stacked sheets can go over the upper edge, and is biased to follow up and down of the front portion of the tray member. And a paper feeder.
にした給紙装置において、 積み重ねた紙葉を載せるトレイ部材と、該トレイ部材の
上昇機構と、該トレイ部材の先端部を臨んで配設された
せき止め部材と、送出機構とを備えて成り、 前記トレイ部材は、積み重ねた紙葉が置かれる載置面部
と、該載置面の左右両側に積み重ねた紙葉を揃えて保持
する側部案内部材とを有し、前端は開放した開口が形成
され、後端部の下部が枢支されて前部が昇降可能に支持
され、 前記上昇機構は、前記トレイ部材の前部が昇降するよう
該トレイ部材に係合し、紙葉の厚みに応じて前記トレイ
部材の前部を昇降させるよう動作するものであり、 前記せき止め部材は、前記トレイ部材の前端より後方に
引っ込んだ位置の下方で枢支され、前記トレイ部材の開
口に弾接して塞ぎ、重ねた紙葉の１枚分が上端縁を乗り
越え可能に配設されるせき板を有し、前記トレイ部材の
前部の昇降に従動するよう付勢され、 前記送出機構は、前記トレイ部材に重ねて保持された紙
葉の最上の１枚に接触して送り出すよう配設されている
ことを特徴とする給紙装置。2. A sheet feeding device for feeding sheets one by one from the stacked sheets, a tray member on which the stacked sheets are placed, a lifting mechanism for the tray members, and a front end of the tray members. The tray member is provided with an installed damming member and a delivery mechanism, and the tray member has a stacking surface portion on which stacked sheets of paper are placed, and a side for holding stacked sheets of paper on both left and right sides of the stacking surface. A front portion of the tray member is lifted up and down, the lower end of the rear end portion is pivotally supported and the front portion is supported so as to be able to move up and down. The tray member is operated so as to move up and down the front portion of the tray member according to the thickness of the sheet, and the dam member is located below the position retracted rearward from the front end of the tray member. Of the tray member The tray has a weir plate that is elastically contacted with the opening to be closed, and one sheet of stacked sheets is arranged to be able to pass over the upper edge, and is biased to follow the elevation of the front portion of the tray member. The sheet feeding device, wherein the mechanism is arranged so as to come into contact with and feed the uppermost one of the sheets stacked and held on the tray member.
該送りロールを回転させる入力ギヤと、該入力ギヤと略
水平に配設され該入力ギヤを回転させる駆動ギヤと、該
駆動ギヤを回転させるモータの軸とを機構ベースに支持
し、該モータを基台に固設し、前記機構ベースは、前記
駆動ギヤの中心を枢軸として前記送りロール側が昇降可
能に枢支され、該送りロールが紙葉から離れて浮いた上
昇位置にあるよう付勢保持され、前記駆動ギヤが回動し
て回転力が伝達するときの機械的抵抗により前記送りロ
ールが下方に下がって紙葉に当接するよう配設されてい
ることを特徴とする給紙装置。3. The sheet feeding device according to claim 2, wherein the feeding mechanism includes a feeding roll that abuts against the sheet from above.
An input gear that rotates the feed roll, a drive gear that is disposed substantially horizontally to the input gear and that rotates the input gear, and a shaft of a motor that rotates the drive gear are supported on a mechanism base, and the motor is The mechanism base is fixed to the base, and the mechanism base is pivotally supported so that the feed roll side can move up and down with the center of the drive gear as a pivot, and the mechanism roll is biased and held so that the feed roll is in a lifted position separated from the sheet. The feeding device is arranged so that the feed roll is lowered downward and abuts against the sheet due to mechanical resistance when the driving gear is rotated to transmit the rotational force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32081894A JPH08175697A (en) | 1994-12-22 | 1994-12-22 | Paper feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32081894A JPH08175697A (en) | 1994-12-22 | 1994-12-22 | Paper feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08175697A true JPH08175697A (en) | 1996-07-09 |
Family
ID=18125578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32081894A Pending JPH08175697A (en) | 1994-12-22 | 1994-12-22 | Paper feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08175697A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7940428B2 (en) | 2006-01-23 | 2011-05-10 | Funai Electric Co., Ltd. | Image generating apparatus |
| JP2019131351A (en) * | 2018-01-31 | 2019-08-08 | ブラザー工業株式会社 | Image reader |
-
1994
- 1994-12-22 JP JP32081894A patent/JPH08175697A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7940428B2 (en) | 2006-01-23 | 2011-05-10 | Funai Electric Co., Ltd. | Image generating apparatus |
| JP2019131351A (en) * | 2018-01-31 | 2019-08-08 | ブラザー工業株式会社 | Image reader |
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