JP2007145530A - Delivered paper sorting device - Google Patents

Delivered paper sorting device Download PDF

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JP2007145530A
JP2007145530A JP2005343567A JP2005343567A JP2007145530A JP 2007145530 A JP2007145530 A JP 2007145530A JP 2005343567 A JP2005343567 A JP 2005343567A JP 2005343567 A JP2005343567 A JP 2005343567A JP 2007145530 A JP2007145530 A JP 2007145530A
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paper
movable tray
discharged
latch claw
drive motor
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JP4587482B2 (en
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Takeshi Goto
健 後藤
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Ricoh Co Ltd
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Ricoh Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent occurrence of troubles when a load occurs during the sorting operation. <P>SOLUTION: When a finger of a worker or an article is pinched by a movable tray and an overload is applied to the movable tray, a latch claw 34 is removed from a concave-convex part 33a of a rotor 33, and the rotor 33 to be rotated by the driving force from an output shaft 24a of a driving motor is idly rotated in relation to a disc-like body 27. Transmission of the driving torque from the driving motor to the movable tray 8 is thereby cut. Namely, in the overload condition, the force for pushing the latch claw 34 out of the concave part of the concave-convex part 33a is applied by the torque of the rotor 33, and when this force exceeds the energizing force for pushing the latch claw 34, engagement of the latch claw 34 with the concave-convex part 33a is released, and transmission of the torque from the disc-like body 27 to the rotor 33 is cut to function as a torque limiter. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、排紙部から排紙される用紙を排紙方向に対して直交する方向で仕分けするため、往復動可能な可動トレイを備えた排出紙仕分け装置に係り、特に、動作時における安全構成に関するものである。   The present invention relates to a discharge paper sorting apparatus having a movable tray that can reciprocate in order to sort paper discharged from a paper discharge unit in a direction perpendicular to the paper discharge direction, and in particular, safety during operation. Concerning configuration.

従来、特許文献１に記載されているように、用紙の仕分け機能を有しない排紙トレイ基体上に、用紙の仕分け機能を有する可動トレイを設け、この可動トレイに排紙方向と直交する方向に往復動させる駆動手段を設け、排紙部の排紙ローラから排出される用紙を仕分けるようにした排出紙仕分け装置がある。
特開２００１−５８７５４号公報 Conventionally, as described in Patent Document 1, a movable tray having a paper sorting function is provided on a paper discharge tray base that does not have a paper sorting function, and the movable tray has a direction orthogonal to the paper discharge direction. There is a discharge paper sorting device which is provided with a driving means for reciprocating movement and sorts the paper discharged from the paper discharge roller of the paper discharge unit.
JP 2001-58754 A

前記従来の排出紙仕分け装置では、可動トレイが動作している間に、作業者が不用意に可動トレイに接触したり、用紙搬送トラブルが発生して負荷が加わると、可動トレイと駆動手段との駆動力伝達系の一部に損傷を生じさせてしまうことがあり、また、移動している可動トレイの角部に、作業者の手などが不用意に触れ、その状態で可動トレイがさらに移動してしまうと、手の一部にケガを生じさせてしまうおそれがある。   In the conventional discharged paper sorting apparatus, when the operator inadvertently touches the movable tray while the movable tray is operating, or when a load is applied due to a paper conveyance trouble, the movable tray and the driving means May cause damage to a part of the driving force transmission system, and an operator's hand or the like may inadvertently touch the corner of the moving movable tray. If it moves, there is a risk of causing injury to a part of the hand.

本発明の目的は、前記従来の課題を解決し、仕分け動作中における負荷発生時のトラブルを未然に防止することができるようにした排出紙仕分け装置を提供することにある。   An object of the present invention is to provide a discharged paper sorting device that solves the above-described conventional problems and can prevent a trouble when a load occurs during the sorting operation.

前記目的を達成するため、請求項１に記載の発明によれば、搭載される機器本体に設けられた排紙部から排紙される用紙を受け、該排紙される用紙を排紙方向に対して直交する方向で仕分けするため、往復動可能な可動トレイを備えた排出紙仕分け装置において、前記可動トレイを前記往復動させるため駆動する駆動モータの駆動系に、前記可動トレイに過負荷が加わったときに、前記駆動モータの駆動トルクを逃がすトルクリミッタを設けたことを特徴とし、この構成によって、可動トレイに過負荷が加わったとき、可動トレイを駆動する駆動モータから可動トレイへの駆動トルクが遮断されることになり、可動トレイおよび駆動伝達系の損傷を防ぐことができる。   In order to achieve the above object, according to the first aspect of the present invention, a sheet discharged from a sheet discharge portion provided in a main body of the device to be mounted is received, and the discharged sheet is directed in the sheet discharge direction. In the discharge paper sorting apparatus having a movable tray that can reciprocate to sort in a direction orthogonal to the direction, an overload is applied to the movable tray in a drive system of a drive motor that drives the movable tray to reciprocate. A torque limiter that releases the drive torque of the drive motor when added is provided. With this configuration, when an overload is applied to the movable tray, the drive motor that drives the movable tray drives the movable tray. The torque is cut off, and the movable tray and the drive transmission system can be prevented from being damaged.

請求項２に記載の発明は、請求項１記載の排出紙仕分け装置において、駆動モータの回転力を可動トレイの往復駆動力に変換するカム機構を設け、駆動モータの出力軸に回転体を固定し、この回転体からトルクリミッタを介してカム機構に駆動モータの回転力を伝達することを特徴とする。   According to a second aspect of the present invention, in the discharged paper sorting apparatus according to the first aspect, a cam mechanism for converting the rotational force of the drive motor into the reciprocating drive force of the movable tray is provided, and the rotating body is fixed to the output shaft of the drive motor. The rotating force of the drive motor is transmitted from the rotating body to the cam mechanism via a torque limiter.

請求項３に記載の発明は、請求項１または２記載の排出紙仕分け装置において、トルクリミッタを、回転体の外周に形成された凹凸部と、この凹凸部に係脱可能にラッチ爪を弾接させるラッチレバーとから構成し、通常負荷が加わっているときは凹凸部とラッチ爪が係合し、過負荷が加わったときに凹凸部からラッチ爪が外れるように構成し、この構成によって、簡単な構成によって過負荷が加わったときの駆動力の遮断と、正常時の駆動力伝達とが確実に行われる。   According to a third aspect of the present invention, in the discharged paper sorting apparatus according to the first or second aspect, the torque limiter includes a concavo-convex portion formed on the outer periphery of the rotating body, and a latch claw that is detachable from the concavo-convex portion. It is composed of a latch lever to be contacted, and when the load is applied normally, the uneven portion and the latch claw are engaged, and when the overload is applied, the latch claw is detached from the uneven portion, With a simple configuration, the driving force is interrupted when an overload is applied and the driving force is transmitted normally.

請求項４に記載の発明は、請求項３記載の排出紙仕分け装置において、ラッチレバーは、一端部が回動可能に支持され、他部にラッチ爪が形成されたものであることを特徴とし、この構成によって、てこ作用によるラッチ爪と凹凸部との係脱作動が確実に行われ、また構成部材の配置構造が簡素化されたものになる。   According to a fourth aspect of the present invention, in the discharged paper sorting apparatus according to the third aspect, the latch lever is configured such that one end thereof is rotatably supported and a latch claw is formed on the other portion. With this configuration, the latch claw and the concavo-convex portion are surely engaged and disengaged by the lever action, and the arrangement structure of the constituent members is simplified.

請求項５に記載の発明は、請求項３または４記載の排出紙仕分け装置において、ラッチレバーにおける他端部に、該ラッチ爪を回転体方向に付勢する弾性部材を設置したことを特徴とし、この構成により、ラッチ爪と凹凸部との係脱が弾性部材の付勢力により安定して行われる。   According to a fifth aspect of the present invention, in the discharged paper sorting apparatus according to the third or fourth aspect, an elastic member that urges the latch claw in the direction of the rotating body is installed at the other end of the latch lever. With this configuration, the latch claw and the concavo-convex portion are stably engaged and disengaged by the urging force of the elastic member.

請求項６に記載の発明は、請求項１記載の排出紙仕分け装置において、排紙される用紙が排紙部に搬送されてきたことを検知したときに、可動トレイを移動開始させ、排紙部から用紙が排紙され始めて、用紙先端が可動トレイの用紙受け面に接触する前に可動トレイの移動を完了させるように駆動制御を行う制御部を備えたことを特徴とし、この構成によって、用紙の仕分けが安定かつ迅速に行われる。   According to a sixth aspect of the present invention, in the discharged paper sorting apparatus according to the first aspect, when it is detected that the discharged paper has been conveyed to the discharge section, the movable tray is started to move, and the discharged paper is discharged. And a control unit that performs drive control so that the movement of the movable tray is completed before the paper leading edge comes into contact with the paper receiving surface of the movable tray. Paper sorting is performed stably and quickly.

本発明によれば、可動トレイの動作を止めるような負荷が加わったときに、トルクリミッタにより駆動モータから可動トレイへの駆動トルクを遮断することができるため、可動トレイおよび駆動伝達系の損傷を防ぐことができ、さらには可動トレイ動作中における作業者の安全を守ることができる。   According to the present invention, when a load that stops the operation of the movable tray is applied, the drive torque from the drive motor to the movable tray can be interrupted by the torque limiter, so that the movable tray and the drive transmission system are damaged. It is possible to prevent this, and further, it is possible to protect the operator's safety during the operation of the movable tray.

以下、本発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の実施形態を説明するための排出紙仕分け装置を設置した画像形成装置の概略構成図であり、画像形成装置の装置本体１には画像形成部２が設けられており、この画像形成部２の下部には給紙部３が、上部には排紙部４が設けられ、装置本体１の上方には、原稿画像を読み取る画像読取部であるスキャナ５が設置されている。   FIG. 1 is a schematic configuration diagram of an image forming apparatus provided with a discharge paper sorting apparatus for explaining an embodiment of the present invention, and an image forming unit 2 is provided in an apparatus main body 1 of the image forming apparatus. A paper feed unit 3 is provided below the image forming unit 2, a paper discharge unit 4 is provided above the image forming unit 2, and a scanner 5, which is an image reading unit that reads a document image, is installed above the apparatus body 1.

装置本体１における排紙部４の横側方の上面で、かつスキャナ５の下方に形成される排紙空間６には、排出紙仕分け装置である排紙トレイ基板７と可動トレイ８とからなる排紙トレイユニット９が設置されている。   A paper discharge space 6 formed on the lateral upper surface of the paper discharge unit 4 in the apparatus main body 1 and below the scanner 5 includes a paper discharge tray substrate 7 and a movable tray 8 which are discharge paper sorting apparatuses. A paper discharge tray unit 9 is installed.

前記給紙部３には、給紙カセット１０が複数装填されており、それぞれに紙種の異なる用紙Ｐが収容される。用紙Ｐは、給紙部３から排紙部４に至る略垂直方向に延びる搬送路１１内を、給紙コロ１２，搬送ローラ１３などにより給紙／搬送され、画像形成部２にて画像形成／定着処理された後、後述するように排紙トレイユニット９へ排紙ローラ１４により排紙される。   The paper feed unit 3 is loaded with a plurality of paper feed cassettes 10, each of which contains paper P of a different paper type. The paper P is fed / conveyed by a paper feed roller 12, a transport roller 13, and the like in a transport path 11 extending in a substantially vertical direction from the paper feed unit 3 to the paper discharge unit 4. After the fixing process, the paper is discharged to the paper discharge tray unit 9 by the paper discharge roller 14 as will be described later.

前記画像形成部２は、本例では公知の電子写真方式のものであって詳しい説明は省略するが、用紙Ｐが、給紙コロ１２により給紙カセット１０から給紙され、搬送ローラ１３で搬送路１１内を搬送される。さらに、用紙Ｐは、レジストローラ対１５にて、所定のタイミングで図示しない転写部に給紙されてトナー像の転写を受ける。用紙Ｐに転写されたトナー像は、定着装置１６により加熱／加圧されて定着される。   The image forming unit 2 is a known electrophotographic system in this example, and detailed description thereof is omitted. However, the sheet P is fed from the sheet feeding cassette 10 by the sheet feeding roller 12 and conveyed by the conveying roller 13. It is conveyed in the path 11. Further, the sheet P is fed by a registration roller pair 15 to a transfer unit (not shown) at a predetermined timing and receives a toner image. The toner image transferred onto the paper P is heated and pressurized by the fixing device 16 and fixed.

前記スキャナ５は、原稿を載置されるコンタクトガラス１７と、コンタクトガラス１７載置された原稿に光を照射する照明ランプ１８と、原稿の表面からの反射光を折り返し反射する走査体１９と、走査体１９の半分の速度で移動する光路折り返しミラー対２０と、結像レンズ２１およびＣＣＤ２２とから構成されている。   The scanner 5 includes a contact glass 17 on which an original is placed, an illumination lamp 18 that irradiates light on the original placed on the contact glass 17, a scanning body 19 that reflects and reflects reflected light from the surface of the original, and It comprises an optical path folding mirror pair 20 that moves at half the speed of the scanning body 19, an imaging lens 21, and a CCD 22.

前記排紙トレイユニット９は、装置本体１における排紙空間６部分に対して着脱可能であって、図２に拡大して示すように、排紙トレイ基板７の上に可動トレイ８が、排紙方向Ａに対して直交する方向Ｂに摺動可能に設置されており、排紙ローラ１４から排紙される用紙Ｐを受ける。   The paper discharge tray unit 9 can be attached to and detached from the paper discharge space 6 portion of the apparatus main body 1, and the movable tray 8 is disposed on the paper discharge tray substrate 7 as shown in an enlarged view in FIG. The paper P is slidably installed in a direction B perpendicular to the paper direction A and receives the paper P discharged from the paper discharge roller 14.

図３，図４に示す本実施形態における排紙仕分け例のように、排紙ローラ１４から排紙される用紙Ｐの仕分けを行う場合、予め可動トレイ８をＢ方向の装置本体１の開放口側に移動させておき、この移動位置で所定枚数の用紙Ｐを受け、次いで、可動トレイ８をＢ方向の装置本体１の奥側に移動させ、この移動位置で所定枚数の用紙Ｐを受ける、という動作を行うことにより、可動トレイ８上に所定枚数毎のグループで用紙Ｐを仕分けることができる。   When sorting the paper P discharged from the paper discharge roller 14 as in the paper discharge sorting example in the present embodiment shown in FIGS. 3 and 4, the movable tray 8 is opened in the B direction in the apparatus main body 1 in advance. The movable tray 8 is moved to the back side of the apparatus main body 1 in the B direction, and a predetermined number of sheets P are received at this moving position. By performing the above operation, the sheets P can be sorted on the movable tray 8 in groups of a predetermined number of sheets.

図３，図４において、最初に仕分けられたグループの用紙をＰ１、次に仕分けられたグループの用紙をＰ２，‥‥とすれば、可動トレイ８上にＰ１，Ｐ２，Ｐ３，‥‥のような用紙のグループに仕分けられる。   3 and 4, if the first group of sheets is P1, the next group of sheets is P2,..., P1, P2, P3,. Sorted into a group of paper.

次に、前記可動トレイの駆動系の構成について説明する。   Next, the configuration of the movable tray drive system will be described.

図４および図５の要部の分解斜視図に示すように、駆動モータ２４における可動トレイ８の駆動系２３は、排紙トレイ基板７に設けたカム機構と、可動トレイ８と一体の案内部とに大別される。カム機構は、駆動モータ２４と、円板状のカム２５と、摺動部材２６を主な要素としている。なお、カム２５には円板状体２７が一体に設けられている。   4 and 5, the drive system 23 of the movable tray 8 in the drive motor 24 includes a cam mechanism provided on the paper discharge tray substrate 7 and a guide unit integrated with the movable tray 8. It is roughly divided into The cam mechanism includes a drive motor 24, a disc-like cam 25, and a sliding member 26 as main elements. The cam 25 is integrally provided with a disk-like body 27.

駆動モータ２４は排紙トレイ基板７の上面であってＢ方向の中央部に固定されている。駆動モータ２４の出力軸２４ａは、カム２５の中心から偏心量Ｌだけずれた位置で該カム２５に嵌合して固定されている。円板状体２７の中心位置と出力軸２４ａの中心とは合致している。   The drive motor 24 is fixed to the upper surface of the paper discharge tray substrate 7 at the center in the B direction. The output shaft 24a of the drive motor 24 is fitted and fixed to the cam 25 at a position shifted by an eccentric amount L from the center of the cam 25. The center position of the disk-shaped body 27 and the center of the output shaft 24a coincide.

摺動部材２６は、少なくとも一対の対向辺同士が平行な部位を有する板状体であって、本例では略正方形をした板状部材からなり、中心部に貫通孔２６ａが形成されている。この貫通孔２６ａにカム２５が摺動回転可能に嵌合しており、これにより摺動部材２６はカム２５を支持している。   The sliding member 26 is a plate-like body having at least a pair of opposite sides parallel to each other. In this example, the sliding member 26 is a substantially square plate-like member, and a through hole 26a is formed in the center. The cam 25 is fitted in the through hole 26 a so as to be slidable and rotatable, and the sliding member 26 supports the cam 25.

図４および図６（ａ），（ｂ）に示す可動トレイの動作の説明図のように、可動トレイ８の裏面には案内部としての２つのリブ３０，３１が、排紙方向Ａと平行に形成されていて、これらリブ３０，３１間に摺動部材２６が摺動可能に嵌合している。   As shown in FIGS. 4 and 6A and 6B, the movable tray 8 has two ribs 30 and 31 parallel to the paper discharge direction A on the back surface thereof. The sliding member 26 is slidably fitted between the ribs 30 and 31.

排紙トレイユニット８において、可動トレイ８は、移動方向がＢ方向に規制されているため、駆動モータ２４を任意の一方向に回転させると、摺動部材２６がリブ３０，３１に沿って摺動するとともに、図６（ａ），（ｂ）に示すように、カム２５の偏心量２×Ｌのストロークで可動トレイ８をＢ方向に往復動させられる。偏心したカム２５を駆動モータ２４に連結した機構により、制御が複雑となる正逆転モータを用いることなく、可動トレイ８を往復動させることができる。   In the discharge tray unit 8, since the movable tray 8 is restricted in the movement direction in the B direction, the sliding member 26 slides along the ribs 30 and 31 when the drive motor 24 is rotated in one arbitrary direction. As shown in FIGS. 6A and 6B, the movable tray 8 is reciprocated in the B direction with a stroke of the eccentric amount 2 × L of the cam 25. With the mechanism in which the eccentric cam 25 is connected to the drive motor 24, the movable tray 8 can be reciprocated without using a forward / reverse motor that complicates the control.

このようにして可動トレイ８を往復動させたときには、図７に示すように、可動トレイ８上に最初に仕分けられるグループの用紙Ｐ１と、次に仕分けられるグループの用紙Ｐ２とのずれ量は（２×Ｌ）となる。   When the movable tray 8 is reciprocated in this way, as shown in FIG. 7, the amount of deviation between the first group of sheets P1 sorted on the movable tray 8 and the next group of sheets P2 is ( 2 × L).

図８は本実施形態におけるトルクリミッタ部分を示す前記円板状体の底面図、図９は図８において後述する回転体を取り去った状態を示す底面図である。   FIG. 8 is a bottom view of the disk-like body showing the torque limiter portion in the present embodiment, and FIG. 9 is a bottom view showing a state in which a rotating body described later in FIG. 8 is removed.

図８において、駆動モータ２４の出力軸２４ａに円板状の回転体３３が固定され、この回転体３３の外周に、凹凸部３３ａが複数箇所（本例では８箇所）形成されている。正常時には、凹凸部３３ａの凹部に円板状体２７に設けられたラッチ爪３４が係合して、この状態で駆動モータ２４の出力軸２４ａの回転駆動力を円板状体２７に伝達している。   In FIG. 8, a disk-shaped rotating body 33 is fixed to the output shaft 24 a of the drive motor 24, and a plurality of uneven portions 33 a (eight positions in this example) are formed on the outer periphery of the rotating body 33. Under normal conditions, the latch claw 34 provided on the disk-like body 27 is engaged with the concave portion of the concave-convex portion 33a, and in this state, the rotational driving force of the output shaft 24a of the drive motor 24 is transmitted to the disk-like body 27. ing.

ラッチ爪３４は、図９に示すように、一端部３５ａが軸３６にて回動可能に支持されたラッチレバー３５の中央部に突設されている。ラッチレバー３５の他端部３５ｂにはラッチ爪３４を凹凸部３３ａに係合方向に付勢する弾性部材であるコイルバネ３７が設けられている。   As shown in FIG. 9, the latch claw 34 protrudes from a central portion of a latch lever 35 whose one end 35 a is rotatably supported by a shaft 36. The other end portion 35b of the latch lever 35 is provided with a coil spring 37, which is an elastic member that biases the latch claw 34 to the concave and convex portion 33a in the engaging direction.

したがって、図８の状態において、可動トレイ８に、例えば作業者の指あるいは物が挟み込まれて過負荷が加わったとき、回転体３３の凹凸部３３ａからラッチ爪３４が外れ、駆動モータ２４の駆動力を受けて回転する回転体３３は円板状体２７に対して空転する。これによって、駆動モータ２４から可動トレイ８への駆動トルクの伝達が遮断されることになる。   Therefore, in the state shown in FIG. 8, for example, when an operator's finger or an object is caught in the movable tray 8 and an overload is applied, the latch claw 34 is detached from the uneven portion 33 a of the rotating body 33, and the drive motor 24 is driven. The rotating body 33 that rotates by receiving force is idle with respect to the disk-shaped body 27. As a result, transmission of drive torque from the drive motor 24 to the movable tray 8 is cut off.

すなわち、過負荷状態では回転体３３のトルクにより、ラッチ爪３４が凹凸部３３ａの凹部から押し出されるような力が加わり、この力がラッチ爪３４を押しているコイルバネ３７の付勢力を超えたとき、ラッチ爪３４と凹凸部３３ａとの係合が解除されて、円板状体２７から回転体３３へのトルク伝達が遮断されるため、トルクリミッタとして機能することになる。   That is, in an overload state, the torque of the rotating body 33 adds a force that causes the latch claw 34 to be pushed out of the concave portion of the concave and convex portion 33a, and when this force exceeds the urging force of the coil spring 37 that pushes the latch claw 34, Since the engagement between the latch claw 34 and the concavo-convex portion 33a is released and torque transmission from the disc-like body 27 to the rotating body 33 is interrupted, the latch claw 34 functions as a torque limiter.

本実施形態では、図９に示すように、ラッチレバー３５の中央部にラッチ爪３４を設け、一端部３５ａを軸３６にて回動可能に支持し、他端部３５ｂにはラッチ爪３４を凹凸部３３ａに係合させるコイルバネ３７を設けた構成にしたため、ラッチレバー３５のてこ作用と、コイルバネ３７の付勢力を利用することにより、簡素化された構成にてラッチ爪３４と凹凸部３３ａとにおいて確実かつ安定した係脱動作が行われ、トルクリミッタとして有用な構造である。   In this embodiment, as shown in FIG. 9, a latch claw 34 is provided at the center of the latch lever 35, one end 35a is rotatably supported by a shaft 36, and the latch claw 34 is provided at the other end 35b. Since the coil spring 37 to be engaged with the concavo-convex portion 33a is provided, the latch pawl 34 and the concavo-convex portion 33a can be formed in a simplified configuration by utilizing the lever action of the latch lever 35 and the biasing force of the coil spring 37. Thus, a reliable and stable engaging / disengaging operation is performed, and the structure is useful as a torque limiter.

本実施形態では、トルクリミッタを駆動モータ２４の内部でなく、モータ外部の駆動系の一部に設けたため、トルクリミッタを駆動モータ２４に内設する特殊な構成のものに比べると、駆動モータ２４の出力への影響が抑制することができ、このため、比較的低コストの構成にて、可動トレイ８の高速移動が可能になる。   In the present embodiment, since the torque limiter is provided not in the drive motor 24 but in a part of the drive system outside the motor, the drive motor 24 is compared with a special configuration in which the torque limiter is provided in the drive motor 24. Therefore, the movable tray 8 can be moved at a high speed with a relatively low-cost configuration.

ただし、本実施形態の前記利点を除いて考えれば、他のトルクリミッタ構造のものを使用してもよい。   However, other torque limiter structures may be used if the advantages of the present embodiment are excluded.

図１０は本実施形態における仕分け駆動の制御部の構成を示すブロック図であり、可動トレイ１８の位置設定に係る制御は、装置本体１の内部に設けられたＣＰＵ（中央演算処理ユニット）４１からなる制御部、および排紙部４に設けられた用紙検知センサ４２の検知信号に基づいて行われる。   FIG. 10 is a block diagram showing the configuration of the sorting drive control unit in the present embodiment. Control related to the position setting of the movable tray 18 is performed from a CPU (central processing unit) 41 provided in the apparatus body 1. This is performed based on the detection signal of the control unit and the paper detection sensor 42 provided in the paper discharge unit 4.

ＣＰＵ４１は、用紙排紙および排紙仕分けなどの排紙全体の制御を行うものであって、各種駆動制御プログラムが格納されているメモリ手段であるＲＯＭ４３からデータを入力し、かつＲＡＭ４４との信号の授受を行い、用紙検知センサ４２からの信号を入力し、また、装置本体１の一部に設けられた操作部４５からの原稿枚数，コピー部数，仕分けの有無などに係る指示信号を受けて、可動トレイ８の位置設定に係る入力情報とし、これらの情報に基づいて、駆動モータ２４の駆動タイミング、可動トレイの駆動系をコントロールする。   The CPU 41 controls the entire paper discharge, such as paper discharge and paper discharge sorting. The CPU 41 inputs data from a ROM 43 which is a memory means in which various drive control programs are stored, and outputs signals to the RAM 44. And a signal from the paper detection sensor 42 is input, and an instruction signal relating to the number of originals, the number of copies, the presence / absence of sorting, etc. is received from the operation unit 45 provided in a part of the apparatus main body 1. Based on the input information related to the position setting of the movable tray 8, the drive timing of the drive motor 24 and the drive system of the movable tray are controlled based on the information.

本実施形態では、ＣＰＵ４１により、排紙される用紙Ｐが排紙部４に搬送されてきたことを用紙検知センサ４２からの検知信号にて受け、これに基づいて駆動モータ２４を始動させて、可動トレイ８の移動を開始させ、さらに排紙部４から用紙Ｐが排紙され始めてから、用紙Ｐの先端が、可動トレイ８の用紙受け面に接触する前に、可動トレイ８の移動を完了させるように、駆動制御のタイミングを図ることにより、用紙の仕分けが安定かつ迅速に行われる。   In the present embodiment, the CPU 41 receives a detection signal from the paper detection sensor 42 that the paper P to be discharged has been conveyed to the paper discharge unit 4, and starts the drive motor 24 based on this detection signal. The movement of the movable tray 8 is started and the movement of the movable tray 8 is completed before the leading edge of the sheet P comes into contact with the sheet receiving surface of the movable tray 8 after the paper P starts to be discharged from the paper discharge unit 4. As described above, by ascertaining the timing of drive control, paper sorting is performed stably and quickly.

本発明は、往復動可能な可動トレイを備え、複写機，プリンタ，ファクシミリ装置などの画像形成装置の排紙部上に搭載される排出紙仕分け装置に適用され、特に可動トレイの動作時における安全構成として有用である。   INDUSTRIAL APPLICABILITY The present invention is applied to a discharged paper sorting device that includes a movable tray that can reciprocate and is mounted on a paper discharge unit of an image forming apparatus such as a copying machine, a printer, or a facsimile machine, and in particular, is safe when the movable tray is in operation. Useful as a configuration.

本発明の実施形態を説明するための排出紙仕分け装置を設置した画像形成装置の概略構成図1 is a schematic configuration diagram of an image forming apparatus provided with a discharged paper sorting device for explaining an embodiment of the present invention. 本実施形態における画像形成装置上部の要部を示す斜視図FIG. 3 is a perspective view showing the main part of the upper part of the image forming apparatus in the present embodiment. 本実施形態における排紙仕分け例を説明するための斜視図The perspective view for demonstrating the example of paper discharge sorting in this embodiment 本実施形態における排紙仕分け例を説明するための正面一部断面図Front partial cross-sectional view for explaining an example of paper discharge sorting in the present embodiment 本実施形態における可動トレイの駆動系の要部を示す分解斜視図Exploded perspective view showing the main part of the drive system of the movable tray in the present embodiment （ａ），（ｂ）は本実施形態における可動トレイの駆動動作の説明図(A), (b) is explanatory drawing of the drive operation of the movable tray in this embodiment. 本実施形態における用紙仕分け例を説明するための平面図The top view for demonstrating the example of paper sorting in this embodiment 本実施形態におけるトルクリミッタ部分を示す前記円板状体の底面図The bottom view of the said disk-shaped body which shows the torque limiter part in this embodiment 図８において回転体を取り去った状態を示す底面図The bottom view which shows the state which removed the rotary body in FIG. 本実施形態における仕分け駆動の制御部の構成を示すブロック図The block diagram which shows the structure of the control part of the sorting drive in this embodiment

符号の説明Explanation of symbols

１ 画像形成装置の装置本体
４ 排紙部
５ スキャナ
６ 排紙空間
７ 排紙トレイ基板
８ 可動トレイ
９ 排紙トレイユニット
２３ 可動トレイの駆動系
２４ 駆動モータ
２４ａ 出力軸
２５ 円板状のカム
２６ 摺動部材
２７ 円板状体
３０，３１ リブ
３３ａ 凹凸部
３４ ラッチ爪
３５ ラッチレバー
３６ 軸
３７ コイルバネ
４１ ＣＰＵ（中央演算処理ユニット）
４２ 用紙検知センサ DESCRIPTION OF SYMBOLS 1 Apparatus body 4 of image forming apparatus Paper discharge part 5 Scanner 6 Paper discharge space 7 Paper discharge tray board | substrate 8 Movable tray 9 Paper discharge tray unit 23 Movable tray drive system 24 Drive motor 24a Output shaft 25 Disc-shaped cam 26 Sliding Moving member 27 Disc-shaped body 30, 31 Rib 33a Uneven portion 34 Latch claw 35 Latch lever 36 Shaft 37 Coil spring 41 CPU (Central processing unit)
42 Paper detection sensor

Claims (6)

搭載される機器本体に設けられた排紙部から排紙される用紙を受け、該排紙される用紙を排紙方向に対して直交する方向で仕分けするため、往復動可能な可動トレイを備えた排出紙仕分け装置において、
前記可動トレイを前記往復動させるため駆動する駆動モータの駆動系に、前記可動トレイに過負荷が加わったときに、前記駆動モータの駆動トルクを逃がすトルクリミッタを設けたことを特徴とする排出紙仕分け装置。 A movable tray capable of reciprocation is provided for receiving paper discharged from a paper discharge unit provided in the mounted device body and sorting the discharged paper in a direction perpendicular to the paper discharge direction. In the discharged paper sorting device,
Discharged paper, characterized in that a torque limiter is provided in a drive system of a drive motor for driving the movable tray to reciprocate so as to release the drive torque of the drive motor when an overload is applied to the movable tray. Sorting device. 前記駆動モータの回転力を前記可動トレイの往復駆動力に変換するカム機構を設け、前記駆動モータの出力軸に回転体を固定し、この回転体から前記トルクリミッタを介して前記カム機構に前記駆動モータの回転力を伝達することを特徴とする請求項１記載の排出紙仕分け装置。   A cam mechanism for converting the rotational force of the drive motor into the reciprocating drive force of the movable tray is provided, a rotating body is fixed to the output shaft of the drive motor, and the rotating mechanism is connected to the cam mechanism via the torque limiter. 2. The discharged paper sorting apparatus according to claim 1, wherein the rotational force of the drive motor is transmitted. 前記トルクリミッタを、前記回転体の外周に形成された凹凸部と、この凹凸部に係脱可能にラッチ爪を弾接させるラッチレバーとから構成し、通常負荷が加わっているときは前記凹凸部と前記ラッチ爪が係合し、過負荷が加わったときに前記凹凸部から前記ラッチ爪が外れるように構成したことを特徴とする請求項１または２記載の排出紙仕分け装置。   The torque limiter comprises an uneven portion formed on the outer periphery of the rotating body, and a latch lever that elastically contacts a latch claw with the uneven portion, and when the load is applied normally, the uneven portion 3. The discharged paper sorting apparatus according to claim 1, wherein the latch claw is configured to be detached from the uneven portion when the latch claw is engaged and an overload is applied. 前記ラッチレバーは、一端部が回動可能に支持され、他部に前記ラッチ爪が形成されたものであることを特徴とする請求項３記載の排出紙仕分け装置。   4. The discharged paper sorting apparatus according to claim 3, wherein one end of the latch lever is rotatably supported and the latch claw is formed on the other part. 前記ラッチレバーにおける他端部に、該ラッチ爪を前記円転体方向に付勢する弾性部材を設置したことを特徴とする請求項３または４記載の排出紙仕分け装置。   5. The discharged paper sorting apparatus according to claim 3, wherein an elastic member for urging the latch claw in the direction of the rolling element is installed at the other end of the latch lever. 排紙される用紙が前記排紙部に搬送されてきたことを検知したときに、前記可動トレイを移動開始させ、前記排紙部から用紙が排紙され始めて、用紙先端が前記可動トレイの用紙受け面に接触する前に前記可動トレイの移動を完了させるように駆動制御を行う制御部を備えたことを特徴とする請求項１記載の排出紙仕分け装置。   When it is detected that the paper to be discharged has been conveyed to the paper discharge unit, the movable tray is started to move, and the paper starts to be discharged from the paper discharge unit. The discharged paper sorting apparatus according to claim 1, further comprising a control unit that performs drive control so that the movement of the movable tray is completed before contacting the receiving surface.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61128249U (en) * 1985-01-30 1986-08-12
JPH06107368A (en) * 1992-09-28 1994-04-19 Ricoh Co Ltd After-treatment device for image forming device
JPH11334961A (en) * 1998-03-27 1999-12-07 Ricoh Co Ltd Paper delivering apparatus
JP2001058754A (en) * 1999-06-08 2001-03-06 Ricoh Co Ltd Sheet sorting device and sheet discharging device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61128249U (en) * 1985-01-30 1986-08-12
JPH06107368A (en) * 1992-09-28 1994-04-19 Ricoh Co Ltd After-treatment device for image forming device
JPH11334961A (en) * 1998-03-27 1999-12-07 Ricoh Co Ltd Paper delivering apparatus
JP2001058754A (en) * 1999-06-08 2001-03-06 Ricoh Co Ltd Sheet sorting device and sheet discharging device

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