JPS6040521Y2 - Multiple sheet feed detection device for stamped paper, etc. - Google Patents
Multiple sheet feed detection device for stamped paper, etc.Info
- Publication number
- JPS6040521Y2 JPS6040521Y2 JP2545881U JP2545881U JPS6040521Y2 JP S6040521 Y2 JPS6040521 Y2 JP S6040521Y2 JP 2545881 U JP2545881 U JP 2545881U JP 2545881 U JP2545881 U JP 2545881U JP S6040521 Y2 JPS6040521 Y2 JP S6040521Y2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- roller
- rollers
- feed
- overlapping
- 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
Links
Landscapes
- Controlling Sheets Or Webs (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【考案の詳細な説明】
この考案は、主として、高速自動押印装置に使用される
押印用紙等の複数枚送り検出装置に関するものである。[Detailed Description of the Invention] This invention mainly relates to a device for detecting the feeding of multiple sheets of stamped paper, etc., used in a high-speed automatic stamping device.
従来、この種の押印用紙等の複数枚送り検出装置は、引
込みローラで引き込まれた用紙を、給紙機構のフィード
ローラと扱きローラとによって後方へ送っているが、例
えば、引込みローラから用紙が複数枚重なった状態のま
ま送り込まれてきた場合、扱きローラで用紙を扱いて分
離し、フィードローラで最上段の用紙のみを1枚ずつ後
方へ送っていた。Conventionally, in this type of multi-sheet feed detection device for stamped paper, etc., the paper is pulled in by a pull-in roller and sent backward by the feed roller and handling roller of the paper feed mechanism. When multiple sheets are fed in in a stacked state, a handling roller handles and separates the sheets, and a feed roller feeds only the topmost sheet one by one to the rear.
しかし乍ら、高速自動押印装置に於いて、押印用紙を高
速で連続的に押印する場合には、給紙機構のフィードロ
ーラ及び扱きローラのみで複数枚重なった状態のまま送
り込まれてきた用紙を1枚ずつ扱いて分離できず、給紙
機構から複数枚の押印用紙が重なり合った状態のまま送
り込まれてしまう虞れがあった。However, when using a high-speed automatic stamping device to stamp stamped paper continuously at high speed, only the feed roller and handling roller of the paper feeding mechanism are used to handle multiple sheets of paper fed in a stacked state. It is not possible to handle and separate the sheets one by one, and there is a risk that a plurality of stamped sheets may be fed from the sheet feeding mechanism in an overlapping state.
そのため、押印済用紙の中に未押印の用紙が粉れ込み、
特に、公文書等の連続番号押印時にあっては、その事務
処理の性格上甚だ不都合なことが生じるので、未押印用
紙を抜き取る作業が強いられるばかりなく、用紙走行路
の給紙機構後方の用紙搬送機構や押印機構等での紙づま
りの原因となる虞れがあった。As a result, unsealed paper gets mixed in with the stamped paper.
In particular, when stamping consecutive numbers on official documents, etc., it is extremely inconvenient due to the nature of the business process, so not only is it necessary to remove unstamped paper, but also the paper is placed behind the paper feeding mechanism on the paper path. There was a risk of paper jamming in the conveyance mechanism, stamping mechanism, etc.
ところで、給紙機構に於いて、用紙等が重なった状態の
まま送り込まれるのを阻止するための検出装置等として
は、従来から、例えば、実公昭50−4331号公報に
記載されているような複写機等の自動給紙装置における
多数枚給紙ミス検知および防止装置や、実開昭50−5
0037号公報に記載されているような複写機等の給紙
装置における重送防止装置等が案出されているが、これ
らによっても、用紙が重なった状態で送られてきたこと
を検出する確実性が低く、複数枚の用紙が重合状態のま
ま送り込まれてしまう虞れがあり、この確実性を更に高
める必要があった。By the way, in the paper feeding mechanism, as a detection device for preventing sheets etc. from being fed in an overlapped state, there has been a conventional detection device, etc., such as the one described in Japanese Utility Model Publication No. 50-4331, for example. Multi-sheet feeding error detection and prevention device in automatic paper feeding devices such as copying machines, and Utility Model 50-5
Although double-feed prevention devices have been devised for paper feeding devices such as copying machines as described in Publication No. 0037, even with these devices, it is not possible to reliably detect when sheets are being fed in an overlapping state. There is a risk that multiple sheets of paper may be fed in a stacked state due to the low reliability, and there is a need to further improve this reliability.
そこで、この考案は、従来存した如上の如き問題点等の
解消を図り、用紙が重なった状態で送られてきたことを
検出する確実性を高め、用紙が重なった状態のままで送
り込まれて未押印の用紙が発生するのを確実に防止でき
るようにし、更に、構成を簡素なものとして、確実な作
動状態が得られるようにすると共に、故障が発生し難い
ようにすること等を目的として案出されたもので、その
要旨とするところは、高速自動押印装置の機枠内に未押
印用紙の用紙を走行させる用紙走行路を設け、この用紙
走行路の前部には、用紙受板と、この用紙受板に積み重
ねられる最上段の用紙上面に当接して用紙を用紙走行路
内に引き込む引込みローラと、この引込みローラで引き
込まれた用紙を上下方向から挾持しながら回転して後方
へ送る一対のフィードローラ及び扱きローラとから威る
給紙機構を配設し、この給紙機構の扱きローラは、フィ
ードローラの下方に位置すると共に、その周速度がフィ
ードローラの周速度よりも遅くなるように回転し、用紙
走行路の給紙機構の後方には、一対の用紙重合検出ロー
ラを、用紙走行路を上下方向から挾むように対向不接触
させて回転自在に配設せしめると共に、下部の用紙重合
検出ローラは、その周速度が上部の用紙重合検出ローラ
の周速度より遅くなるように回転し、上部の用紙重合検
出ローラは、複数の上部ローラを上シャフトに適宜間隔
で配設して形威され、下部の用紙重合検出ローラは、複
数の下部ローラを前記上部ローラ夫々の間に位置するよ
うに下シャフトに配設して形威され、各用紙重合検出ロ
ーラと前記給紙機構との間には、用紙走行路を上下方向
から挾むように対向させたセンサーと、発光ダイオード
とから成る用紙長さ検出機構を配設せしめたことに存す
るのである。Therefore, this invention aims to solve the above-mentioned problems that existed in the past, improve the reliability of detecting when sheets are sent in an overlapped state, and improve the reliability of detecting when sheets are sent in an overlapped state. The purpose of this system is to reliably prevent the occurrence of unstamped paper, and furthermore, to simplify the configuration, ensure reliable operation, and prevent malfunctions from occurring. This was devised, and its gist is that a paper running path for running unstamped paper is provided within the machine frame of a high-speed automatic stamping device, and a paper receiving plate is installed at the front of this paper running path. There is a pull-in roller that comes into contact with the top surface of the top sheet of paper stacked on the paper receiving plate and pulls the paper into the paper travel path, and a pull-in roller that rotates while sandwiching the paper pulled in from above and below to the rear. A paper feeding mechanism consisting of a pair of feed rollers and a handling roller is provided, and the handling roller of this paper feeding mechanism is located below the feed roller, and its circumferential speed is slower than that of the feed roller. Behind the paper feeding mechanism on the paper running path, a pair of paper overlapping detection rollers are rotatably disposed opposite to each other so as to sandwich the paper running path from above and below in a non-contact manner. The paper overlapping detection roller rotates so that its circumferential speed is slower than the circumferential speed of the upper paper overlapping detection roller, and the upper paper overlapping detection roller has a plurality of upper rollers arranged on an upper shaft at appropriate intervals. The lower paper overlapping detection roller is configured by disposing a plurality of lower rollers on the lower shaft so as to be located between the upper rollers, and the lower paper overlapping detection roller is connected to the paper feeding mechanism. The reason lies in the fact that a paper length detection mechanism consisting of a sensor and a light emitting diode, which are opposed to each other so as to sandwich the paper running path from above and below, is disposed between them.
以下、この考案の一実施例を図面に基いて説明する。An embodiment of this invention will be described below with reference to the drawings.
第1図に示すように、高速自動押印装置の機枠(図示せ
ず)内に未押印用紙の用紙Pを走行させる用紙走行路1
を設け、この用紙走行路1の前部には、多数の用紙Pを
傾斜させて積み重ねておけるようにした用紙受板2と、
この用紙受板2の最上段の用紙P上面に当接して用紙P
を用紙走行路1内に引き込む引込みローラ3と、この引
込みローラ3で引き込まれた用紙Pを上下方向から挾持
しながら回転して最上段の用紙Pのみを後方へ送る一対
のフィードローラ4及び扱きローラ5とから戒る給紙機
構6を配設する。As shown in FIG. 1, a paper running path 1 for running unstamped paper P in a machine frame (not shown) of a high-speed automatic stamping device
At the front of the paper running path 1, there is a paper receiving plate 2 on which a large number of papers P can be stacked at an angle;
The paper P comes into contact with the top surface of the paper P on the uppermost stage of this paper receiving plate 2.
a pair of feed rollers 4 and a pair of feed rollers 4 that rotate while pinching the paper P drawn in by the pull-in roller 3 from above and below to send only the topmost paper P backwards; A paper feed mechanism 6 is provided that is separated from the rollers 5.
この給紙機構6は、用紙走行路1を上下方向から挾むよ
うに、用紙走行路1の前部の上にフィードローラ4を、
用紙走行路1の前部の下に扱きローラ5を夫々対向接触
させて回転自在に軸支し、このフィードローラ4の軸前
方に引込みローラ3を、揺動フレーム7といくつかの歯
車(図示せず)とを介してフィードローラ4の回転が伝
達されるよう回転自在に軸支して形威されている。This paper feeding mechanism 6 includes a feed roller 4 placed above the front part of the paper running path 1 so as to sandwich the paper running path 1 from above and below.
Handling rollers 5 are rotatably supported under the front part of the paper running path 1 in opposing contact with each other. The feed roller 4 is rotatably supported so that the rotation of the feed roller 4 is transmitted through the feed roller 4 (not shown).
そして、扱きローラ5は、その外周面に於ける周速度(
用紙送り速度)をフィードローラ4の周速度(用紙送り
速度)よりも遅くなるように回転させるために、フィー
ドローラ4の径より若干小径に形威し、最上段の用紙P
のみを1枚づつ扱いて分離して送り出せるように設定さ
れている。The handling roller 5 has a circumferential speed (
In order to rotate the paper so that the peripheral speed (paper feeding speed) is slower than the circumferential speed (paper feeding speed) of the feed roller 4, the diameter is slightly smaller than that of the feed roller 4.
It is set up so that only one sheet can be handled, separated and sent out.
また、用紙走行路1の給紙機構6の後方には、互いにそ
の外周面に於ける周速度(用紙送り速度)が異なる同一
径の一対の用紙重合検出ローラ8.9を、用紙走行路1
を上下方向から挾むように対向不接触させて回転自在に
配設する。Further, behind the paper feed mechanism 6 on the paper running path 1, a pair of paper overlapping detection rollers 8.9 of the same diameter, which have different circumferential speeds (paper feeding speeds) on their outer peripheral surfaces, are installed on the paper running path 1.
are arranged so as to be freely rotatable so as to be sandwiched from above and below so as to face each other in a non-contact manner.
この各用紙重合検出ローラ8,9は、第1図のように、
側面からだと対向接触させて配設されているように見え
るが、第2図に示すように、上部の用紙重合検出ローラ
8は、上シャフト10と、この上シャフト10に適宜間
隔に離して装着された3個の上部ローラ8A、8B、8
Cとから戒り、下部の用紙重合検出ローラ9は、下シャ
フト11と、各上部ローラ8A、8B、8Cに接触させ
ないよう上部ローラ8A、8B、8C夫々の間に位置す
るように下シャフト11に装着された2個の下部ローラ
9A、9Bとから戊っている。These paper overlapping detection rollers 8 and 9 are arranged as shown in FIG.
When viewed from the side, it looks like they are placed facing each other in contact with each other, but as shown in FIG. The three upper rollers 8A, 8B, 8
C, the lower paper overlapping detection roller 9 is positioned between the lower shaft 11 and the upper rollers 8A, 8B, and 8C so as not to come into contact with the lower shaft 11 and each of the upper rollers 8A, 8B, and 8C. It is separated from the two lower rollers 9A and 9B attached to the roller.
そして、この各下部ローラ9A、9Bは、その外周面に
於ける周速度(用紙送り速度)が各上部ローラ8A、8
B、8Cの周速度(用紙送り速度)よりも遅くなるよう
に回転数を若干下げておき、前記給紙機構6から複数枚
の用紙Pが重なり合って送り込まれてきた際に、各上部
ローラ8A、8B、8Cに接触している用紙Pの方が速
く搬送されて各用紙Pがずれるように設定されている(
第3図参照)。Each of the lower rollers 9A and 9B has a circumferential speed (paper feeding speed) on its outer peripheral surface of each of the upper rollers 8A and 8.
The rotation speed is slightly lowered so that it is slower than the circumferential speed (paper feeding speed) of the upper rollers 8A and 8C, and when multiple sheets of paper P are fed from the paper feed mechanism 6 in an overlapping manner, the upper rollers 8A, It is set so that the paper P that is in contact with 8B and 8C is transported faster and each paper P is shifted (
(See Figure 3).
更に、各用紙重合検出ローラ8,9と給紙機構9との間
には、用紙走行路1を上下方向から挾むように対向させ
たセンサー12と発光ダイオード13とから成る用紙長
さ検出機構14を配設せしめる。Further, between each paper overlap detection roller 8, 9 and the paper feed mechanism 9, a paper length detection mechanism 14 consisting of a sensor 12 and a light emitting diode 13, which are opposed to each other so as to sandwich the paper running path 1 from above and below, is provided. I will arrange it.
ところで、この用紙長さ検出機構14は、前記センサー
12で用紙Pの先端を検出して機械回転をクロックパル
スに変換しているエンコーダーから、クロックパルスを
発生させて用紙Pの長さ分のパルス数をカウントし、そ
のパルス数が予めセットした1枚の用紙Pの長さ分のパ
ルス数と比較して同じか長いかどうか判断できるように
構成されている。By the way, this paper length detection mechanism 14 generates clock pulses from an encoder that detects the leading edge of the paper P with the sensor 12 and converts mechanical rotation into clock pulses, and generates pulses corresponding to the length of the paper P. It is configured to count the number of pulses and compare it with a preset number of pulses corresponding to the length of one sheet of paper P to determine whether it is the same or longer.
したがって、センサー12でパルス数が同じと判断され
れば(通常1枚の用紙Pのとき)、印刷OKの信号を発
生させて印刷が開始され、また、センサー12でパルス
数が長いと判断されれば(すなわち、複数枚の用紙Pが
引込みローラ3から重なり合って送り込まれた際に、フ
ィードローラ4及び扱きローラ5と、各用紙重合検出ロ
ーラ8,9とで重なり合って送り込まれた用紙Pがずら
され、用紙P1枚分の長さLより全長L1が若干長くな
ってパルス数を多くカウントするような状態)、印刷N
Gの信号を発生させて用紙Pのフィードをストップさせ
るように設定されている。Therefore, if the sensor 12 determines that the number of pulses is the same (normally for one sheet of paper P), a print OK signal is generated and printing is started, and if the sensor 12 determines that the number of pulses is longer. (In other words, when a plurality of sheets of paper P are fed in an overlapping manner from the pull-in roller 3, the feed roller 4, handling roller 5, and each paper overlap detection roller 8, 9 (The state in which the total length L1 is slightly longer than the length L of one sheet of paper P and the number of pulses is counted larger), printing N
It is set to generate a G signal to stop the feeding of the paper P.
この考案は、前述のように構成したから、引込みローラ
3から複数枚の用紙Pが重なり合って送り込まれた際に
、フィードローラ4と扱きローラ5の用紙送り速度(周
速度)が異なっているため、用紙送り速度の速いフィー
ドローラ4に接触している用紙P(一番上の用紙P)の
方が速く搬送されて重なり合っている用紙Pがずらされ
、そして、この重なり合っている用紙Pは、その先端が
センサー12と発光ダイオード13とによって検知され
、次に、各用紙重合検出ローラ8,9により、用紙送り
速度の速い上部の用紙重合検出ローラ8の各上部ローラ
8A、8B、8Cに接触している用紙P(一番上の用紙
P)が速く搬送されて重なり合っている用紙Pが一層ず
らされ、用紙1枚分の長さLより重なり合っている用紙
P全体の全長L1が長くなる。Since this invention is constructed as described above, when a plurality of sheets of paper P are fed from the drawing roller 3 in an overlapping manner, the paper feeding speeds (peripheral speeds) of the feed roller 4 and the handling roller 5 are different. The paper P that is in contact with the feed roller 4 with a high paper feeding speed (the top paper P) is transported faster, and the overlapping papers P are shifted, and the leading edge of the overlapping papers P is shifted. is detected by the sensor 12 and the light emitting diode 13, and then the paper overlap detection rollers 8 and 9 contact the upper rollers 8A, 8B, and 8C of the upper paper overlap detection roller 8, which has a higher paper feeding speed. The paper P (the top paper P) is transported quickly and the overlapping papers P are further shifted, and the total length L1 of the entire overlapping papers P becomes longer than the length L of one paper.
それから、このすらせれて重なり合っている用紙Pの終
端がセンサー12と発光ダイオード13とによって検知
されると共に、この用紙Pの先端から終端までの間、用
紙P1枚分のパルス数より多いパルス数をカウントして
、印刷NGの信号を発生されて用紙Pのフィードとスト
ップさせるものである。Then, the end of this overlapping paper P is detected by the sensor 12 and the light emitting diode 13, and the number of pulses from the leading edge of the paper P to the end of the paper P is greater than the number of pulses for one sheet of paper P. It counts, generates a printing NG signal, and stops feeding the paper P.
したがって、引込みローラ3で用紙Pを1枚づつ送り込
めず、用紙受板2から複数枚の用紙Pが重なり合って送
り込まれても、フィードローラ4及び扱きローラ5と、
各用紙重合検出ローラ8゜9と、用紙長さ検出機構14
とによってこれを確実に検出して、用紙Pのフィードを
確実にストップできるため、従来のように押印済用紙の
中に未押印の用紙が粉れ込んで未押印用紙の抜き取り作
業や、用紙走行路1の後方の用紙搬送機構、押印機構で
の紙づまり等を未然に防止することができるようになる
。Therefore, even if the drawing roller 3 cannot feed the sheets of paper P one by one and multiple sheets of paper P are fed from the paper receiving plate 2 in an overlapping manner, the feed roller 4 and the handling roller 5
Each paper overlapping detection roller 8°9 and paper length detection mechanism 14
Since this can be reliably detected and the feeding of paper P can be stopped reliably, unlike conventional methods, unstamped paper may be mixed in with stamped paper, and the work of extracting unstamped paper or paper feeding may be interrupted. This makes it possible to prevent paper jams in the paper transport mechanism and stamping mechanism at the rear of path 1.
特に、給紙機構6の扱きローラ5は、フィードローラ4
の下方に位置すると共に、その周速度がフィードローラ
4の周速度よりも遅くなるように回転し、下部の用紙重
合検出ローラ9は、その周速度が上部の用紙重合検出ロ
ーラ8の周速度より遅くなるように回転するように構成
したので、引込みローラ3から複数枚の用紙Pが重なり
合って送り送まれた際に、フィードローラ4と扱きロー
ラ5の用紙送り速度(周速度)が異なっているため、用
紙送り速度の速いフィードローラ4に接触している用紙
P(一番上の用紙P)の方が速く搬送されて重なり合っ
ている用紙Pがずらされ、更に、各用紙重合検出ローラ
8,9により、用紙送り速度(周速度)の速い上部の用
紙重合検出ローラ8の各上部ローラ8A、8B、8Cに
接触している用紙P(一番上の用紙P)が速く搬送され
て重なり合っている用紙Pが一層ずらされ、用紙1枚分
の長さLより重なり合っている用紙P全体の全長L1を
確実に長くすることができ、センサー12及び発光ダイ
オード13によりこの長さの違いを確実に検出させるこ
とができるようになって、用紙が重なり合った状態で送
られてきたことを検出する確実性が極めて高いものとな
る。In particular, the handling roller 5 of the paper feeding mechanism 6 is the feed roller 4
The paper overlapping detection roller 9 at the bottom rotates so that its peripheral speed is slower than the peripheral speed of the feed roller 4, and the lower paper overlapping detection roller 9 has a peripheral speed lower than the peripheral speed of the upper paper overlapping detection roller 8. Since it is configured to rotate at a slower speed, when multiple sheets of paper P are fed from the drawing roller 3 in an overlapping manner, the paper feeding speed (peripheral speed) of the feed roller 4 and the handling roller 5 is different. , the paper P that is in contact with the feed roller 4 with a faster paper feed speed (the top paper P) is transported faster, and the overlapping papers P are shifted, and furthermore, each paper overlap detection roller 8, 9 , the paper P (top paper P) that is in contact with each of the upper rollers 8A, 8B, and 8C of the upper paper overlap detection roller 8 where the paper feed speed (circumferential speed) is faster is conveyed quickly and the paper P is overlapped. To ensure that the total length L1 of all overlapping sheets P is longer than the length L of one sheet by further shifting the sheets, and to surely detect this difference in length by a sensor 12 and a light emitting diode 13. As a result, the reliability of detecting that sheets of paper are being fed in an overlapping state becomes extremely high.
しかも、一対の用紙重合検出ローラ8,9、つまり、上
部ローラ8A、8B、8Cと下部ローラ9A、9Bとを
、用紙走行路1を上下方向から挾むように対向不接触さ
せて回転自在に配設したので、用紙Pを用紙走行路1の
上下方向から常時平均的に挾持しながら後方の押印機構
へ搬送できるため、用紙Pの所定位置に確実に押印する
ことができるようになる。In addition, a pair of paper overlapping detection rollers 8, 9, that is, upper rollers 8A, 8B, 8C and lower rollers 9A, 9B, are arranged so as to be rotatable so as to face each other in a non-contact manner so as to sandwich the paper running path 1 from above and below. Therefore, the paper P can be conveyed to the rear stamping mechanism while being held evenly at all times from the top and bottom of the paper running path 1, so that the stamp can be reliably stamped at a predetermined position on the paper P.
尚、この考案は、従来の高速自動押印装置等の給紙機構
6と用紙搬送機構との間の用紙走行路1の一対の用紙重
合検出ローラ8,9と、既存のセンサー12及び発光ダ
イオード13で成る用紙長さ検出機構14とを配設する
のみであるため、構成も頗る簡素となり、コンパクトに
構成できるようになる。This invention replaces the pair of paper overlapping detection rollers 8 and 9 of the paper running path 1 between the paper feed mechanism 6 such as a conventional high-speed automatic stamping device and the paper transport mechanism, and the existing sensor 12 and light emitting diode 13. Since only the paper length detection mechanism 14 consisting of the following is provided, the configuration is extremely simple and can be made compact.
更に、上部の用紙重合検出ローラ8は、複数の上部ロー
ラ8A、8B、8Cを上シャフト10に適宜間隔で配設
して形成され、下部の用紙重合検出ローラ9は、複数の
下部ローラ9A、9Bを前記上部ローラ8A、8B、8
C夫々の間に位置するように下シャフト11に配設して
形成されているので、この一対の用紙重合検出ローラ8
,9の間を、重なり合っている用紙Pが通過する場合、
用紙Pを各上部ローラ8A、8B、8Cと各下部ローラ
9A、9Bとで挟圧しないので、重なり合っている用紙
P相互間の摩擦力を各上部ローラ8A、8B、8Cと、
各下部ローラ9A、9Bとで増加する虞れがなく、重な
り合っている用紙P相互を各上部ローラ8A、8B、8
Gと各下部ローラ9A、9Bとで容易に且つスムーズに
ずらせるようになる。Further, the upper paper overlapping detection roller 8 is formed by disposing a plurality of upper rollers 8A, 8B, and 8C on the upper shaft 10 at appropriate intervals, and the lower paper overlapping detection roller 9 is formed by disposing a plurality of upper rollers 8A, 8B, and 8C at appropriate intervals. 9B to the upper rollers 8A, 8B, 8
The pair of paper overlapping detection rollers 8
, 9, when overlapping sheets P pass through,
Since the paper P is not pinched between the upper rollers 8A, 8B, 8C and the lower rollers 9A, 9B, the frictional force between the overlapping papers P is transferred to the upper rollers 8A, 8B, 8C.
Each upper roller 8A, 8B, 8
G and each lower roller 9A, 9B allows for easy and smooth shifting.
また、各用紙重合検出ローラ8,9ち給紙機構6との間
に用紙長さ検出機構14を配設したので、給紙機構6で
ずらされた重なり合っている用紙Pの先端部分を用紙長
さ検出機構14で検出できると共に、各用紙重合検出ロ
ーラ8,9で更にずらされた重なり合っている用紙Pの
終端部分を用紙長さ検出機構14で検出できるようにな
る。In addition, since the paper length detection mechanism 14 is disposed between each paper overlap detection roller 8, 9 and the paper feed mechanism 6, the leading edge of the overlapping paper P shifted by the paper feed mechanism 6 is determined by the paper length detection mechanism 14. In addition, the paper length detection mechanism 14 can detect the end portion of the overlapping sheets P which are further shifted by the paper overlap detection rollers 8 and 9.
以上説明したように、この考案によれば、用紙が重なっ
た状態で送られてきたことを検出する確実性が一層高め
られ、用紙受板から複数枚の用紙が重なり合った状態で
送り込まれても、これを確実に検出して用紙のフィード
を確実にストップできるようになり、未押印用紙の抜き
取り作業や、用紙搬送機構、押印機構での紙づまり等を
未然に防止でき、しかも、用紙の所定位置に確実に押印
できるようになり、また、構成の簡素化も図れ、コンパ
クトに構成でき、確実な作動状態が得られるようになる
と共に、故障が発生し難いものとなる等の諸効果が得ら
れるようになる。As explained above, according to this invention, it is possible to further increase the reliability of detecting that sheets of paper are being fed in an overlapping state, and even if multiple sheets of paper are being fed in an overlapping state from the paper receiving plate. , it is now possible to reliably detect this and stop paper feeding, thereby preventing paper jams in the paper conveyance mechanism and stamping mechanism, as well as the work of removing unsealed paper. It has various effects such as being able to reliably stamp the position, simplifying the configuration, making it more compact, ensuring reliable operation, and being less likely to break down. You will be able to do it.
図面は、この考案の一実施例を示すもので、第1図は側
面から見た原理図、第2図は用紙重合検出ローラの位置
関係を示す正面図、第3図は用紙の複数枚送り検出状態
の平面図である。
1・・・・・・用紙走行路、2・・・・・・用紙受板、
3・・・・・・引込みローラ、4・・・・・・フィード
ローラ、5・・・・・・扱きローラ、6・・・・・・給
紙機構、7・・・・・・揺動フレーム、8・・・・・・
用紙重合検出ローラ、8A・・・・・・上部ローラ、8
B・・・・・・上部ローラ、8C・・・・・・上部ロー
ラ、9・・・・・・用紙重合検出ローラ、9A・・・・
・・下部ローラ、9B・・・・・・下部ローラ、10・
・・・・・上シャフト、11・・・・・・下シャフト、
12・・・・・・センサー、13・・・・・・発光ダイ
オード、14・・・・・・用紙長さ検出機構、P・・・
・・・用紙、L・・・・・・用紙1枚分の長さ、Ll・
・・・・・全長。The drawings show one embodiment of this invention; Fig. 1 is a diagram of the principle seen from the side, Fig. 2 is a front view showing the positional relationship of the paper overlapping detection roller, and Fig. 3 is a diagram showing the feeding of multiple sheets of paper. It is a top view of a detection state. 1...Paper running path, 2...Paper receiving plate,
3... Retraction roller, 4... Feed roller, 5... Handling roller, 6... Paper feeding mechanism, 7... Rocking Frame, 8...
Paper polymerization detection roller, 8A...Top roller, 8
B...Top roller, 8C...Top roller, 9...Paper overlapping detection roller, 9A...
...Lower roller, 9B...Lower roller, 10.
...Upper shaft, 11...Lower shaft,
12...Sensor, 13...Light emitting diode, 14...Paper length detection mechanism, P...
...Paper, L...Length of one sheet of paper, Ll.
·····full length.
Claims (1)
せる用紙走行路を設け、この用紙走行路の前部には、用
紙受板と、この用紙受板に積み重ねられる最上段の用紙
上面に当接して用紙を用紙走行路内に引き込む引込みロ
ーラと、この引込みローラで引き込まれた用紙を上下方
向から挾持しながら回転して後方へ送る一対のフィード
ローラ及び扱きローラとから成る給紙機構を配設し、こ
の給紙機構の扱きローラは、フィードローラの下方に位
置すると共に、その周速度がフィードローラの周速度よ
りも遅くなるように回転し、用紙走行路の給紙機構の後
方には、一対の用紙重合検出ローラを、用紙走行路を上
下方向から挾むように対向不接触させて回転自在に配設
せしめると共に下部の用紙重合検出ローラは、その周速
度が上部の用紙重合検出ローラの周速度より遅くなるよ
うに回転し、上部の用紙重合検出ローラは、複数の上部
ローラを上シャフトに適宜間隔で配設して形成され、下
部の用紙重合検出ローラは、複数の下部ローラを前記上
部ローラ夫々の間に位置するように下シャフトに配設し
て形成され、各用紙重合検出ローラと前記給紙機構との
間には、用紙走行路を上下方向から挾むように対向させ
たセンサーと、発光ダイオードとから威る用紙長さ検出
機構を配設せしめたことを特徴とする押印用紙等の複数
枚送り検出装置。A paper running path for running paper such as stamped paper is provided in the machine frame of the high-speed automatic stamping device, and at the front of this paper running path, there is a paper receiving plate and the top surface of the top sheet of paper stacked on this paper receiving plate. A paper feeding mechanism consisting of a drawing roller that draws the paper into the paper path by contacting the drawing roller, and a pair of feed rollers and handling rollers that rotate and feed the paper backward while pinching the paper drawn in by the drawing roller from above and below. The handling roller of this paper feeding mechanism is located below the feed roller and rotates so that its circumferential speed is slower than the circumferential speed of the feed roller, and the handling roller of this paper feeding mechanism is located at the rear of the paper feeding mechanism on the paper running path. In this method, a pair of paper overlapping detection rollers are arranged so as to be freely rotatable so as to face each other in a non-contact manner so as to sandwich the paper running path from above and below, and the lower paper overlapping detection roller has a peripheral speed higher than that of the upper paper overlapping detecting roller. The upper paper overlapping detection roller is formed by multiple upper rollers arranged at appropriate intervals on the upper shaft, and the lower paper overlapping detection roller is formed by multiple lower rollers. A sensor is disposed on the lower shaft so as to be located between each of the upper rollers, and is opposed between each paper overlapping detection roller and the paper feeding mechanism so as to sandwich the paper running path from above and below. A multi-sheet feed detection device for stamped paper, etc., characterized in that it is equipped with a paper length detection mechanism that uses a light emitting diode.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2545881U JPS6040521Y2 (en) | 1981-02-25 | 1981-02-25 | Multiple sheet feed detection device for stamped paper, etc. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2545881U JPS6040521Y2 (en) | 1981-02-25 | 1981-02-25 | Multiple sheet feed detection device for stamped paper, etc. |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57138839U JPS57138839U (en) | 1982-08-30 |
JPS6040521Y2 true JPS6040521Y2 (en) | 1985-12-06 |
Family
ID=29823158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2545881U Expired JPS6040521Y2 (en) | 1981-02-25 | 1981-02-25 | Multiple sheet feed detection device for stamped paper, etc. |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6040521Y2 (en) |
-
1981
- 1981-02-25 JP JP2545881U patent/JPS6040521Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS57138839U (en) | 1982-08-30 |
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