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JP4549238B2 - Paper feeder - Google Patents

Paper feeder Download PDF

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JP4549238B2
JP4549238B2 JP2005173067A JP2005173067A JP4549238B2 JP 4549238 B2 JP4549238 B2 JP 4549238B2 JP 2005173067 A JP2005173067 A JP 2005173067A JP 2005173067 A JP2005173067 A JP 2005173067A JP 4549238 B2 JP4549238 B2 JP 4549238B2
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sheet
paper
suction
conveyance
conveying
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JP2006347651A (en
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秀紀 萬
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Duplo Seiko Corp
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Duplo Seiko Corp
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Description

本発明は給紙装置に関し、積載された用紙束の最下部の用紙を紙葉毎に給紙する技術に係るものである。   The present invention relates to a paper feeding device, and relates to a technology for feeding the lowermost paper of a stacked paper bundle for each paper sheet.

従来、この種の給紙装置は、印刷機、複写機、紙幣計数機、選挙投票用紙計数機、その他の給気装置として利用されており、給紙装置の機能として、重送とならないように正確に紙葉毎に分離でき、斜行搬送等によるジャムのない給紙が求められている。   Conventionally, this type of paper feeder has been used as a printing machine, copier, bill counter, election ballot paper counter, and other air supply devices. There is a demand for paper feeding that can be accurately separated for each paper sheet and is free of jamming by skew feeding.

給紙装置には、例えば特許文献1に記載するものがある。これは、積載用紙の前端部を上から加圧手段で押さえ、搬送手段を駆動して用紙を繰り出し、規制部材で規制しながら下から順に用紙を送り出す給紙装置であり、搬送手段を駆動して用紙を繰り出すとき、その繰り出し用紙の腰の強さなど紙質に応じて、規制部材が適宜に撓んで繰り出し量を規制するものである。   For example, Patent Document 1 discloses a paper feeding device. This is a paper feeding device that presses the front edge of stacked paper from above with pressure means, drives the conveyance means to feed out the paper, and feeds the paper in order from the bottom while being regulated by the regulating member. When the paper is fed out, the regulating member is appropriately bent according to the paper quality such as the stiffness of the fed paper to regulate the feeding amount.

また、特許文献2に記載するものは、シート積載手段にシートを積載し、積載されたシートのうちの最下部のシートを吸着搬送手段の吸着部で吸着して搬送し、シート積載手段に積載されているシート群の下部に前方から空気を吹き付けることで、シート積載部に積載されている最下部のシートとその上にある他のシートとを分離するものであり、シート積載手段は、シートを積載するシート積載面を備えた積載面構成部材と、シート搬送方向下流側にゆくに従ってシート積載面に対する位置が高くなる傾斜面を備え、シート積載面上に後端シール部材を配置したものである。   In addition, in Patent Document 2, a sheet is stacked on the sheet stacking unit, and the lowermost sheet among the stacked sheets is sucked and transported by the suction unit of the suction transport unit, and is stacked on the sheet stacking unit. The lowermost sheet loaded on the sheet stacking unit is separated from the other sheets on the sheet stacking unit by blowing air from the front to the lower part of the sheet group. A stacking surface component having a sheet stacking surface for stacking a sheet and an inclined surface whose position with respect to the sheet stacking surface increases as it goes downstream in the sheet conveying direction, and a rear end seal member is arranged on the sheet stacking surface. is there.

この後端シール部材が、シート積載面に積載されたシートの後部を、シート積載面よりも高く保つことにより、シート後端部でのシートとシートとのシール性を高めて、吹き付ける空気が最下部のシートとその上のシートとの間に均一に広がる効果を奏している。   This rear end seal member keeps the rear part of the sheets stacked on the sheet stacking surface higher than the sheet stacking surface, thereby improving the sealing performance between the sheets at the rear end of the sheet and blowing air to the maximum. There is an effect of spreading uniformly between the lower sheet and the upper sheet.

また、特許文献3に記載するものは、複数枚のシートを積載する積載手段と、シートの給紙方向を規制するサイド規制手段と、シートの給紙方向と交差するシート側面に空気を噴射して、積載したシートを浮上させる手段と、積載手段の上に積載されたシートの最下面のシートを真空吸着して搬送する給紙手段とを備え、シート側面に向けて少なくとも2方向に空気を噴射する1つ以上の噴射手段を有し、これらの噴射手段の噴射する空気流の向きは互いに交差しないものであり、積載手段上に積載されたシート束が、その搬送方向に沿う一側部を、2方向に噴射する噴射手段で空気を吹き付けることにより浮上され、かつ、最下面のシートがシート積載手段に真空吸着されて分離・給紙されるものである。   Japanese Patent Application Laid-Open No. H10-228688 discloses a stacking unit that stacks a plurality of sheets, a side regulating unit that regulates the sheet feeding direction, and a jet of air to a sheet side surface that intersects the sheet feeding direction. And a sheet feeding means for vacuum-sucking and transporting the lowermost sheet stacked on the stacking means, and supplying air in at least two directions toward the sheet side surface. One or more jetting means having jetting means, the directions of the airflows jetted by these jetting means do not intersect each other, and the sheet bundle loaded on the stacking means is one side portion along the conveying direction. The sheet is floated by blowing air with an injection means for injecting in two directions, and the lowermost sheet is vacuum-sucked by the sheet stacking means and separated and fed.

また、特許文献4に記載するものは、保持用真空チャンバが載置面上に並立する多数の紙葉類のうち先行の紙葉類を後行の紙葉類から分離する方向に吸引し、給送ベルトが保持用真空チャンバによる吸引方向と直角な方向に紙葉類を給送するものであり、載置面と給送ベルトの間に、保持用真空チャンバによる吸引方向と同一の方向に紙葉類を吸引する二つの保持用補助真空チャンバを紙葉類給送方向に並列して配設し、先行の紙葉類を保持用真空チャンバで吸引保持して給送する間、次の紙葉類を両保持用補助真空チャンバのうちいずれか一方の保持用補助真空チャンバで吸引保持するものである。
特開平7−117882号公報 特開平10−167482号公報 特開平9−315605号公報 特開平11−11712号公報
In addition, what is described in Patent Document 4 is a suction vacuum chamber in which a preceding vacuum sheet is separated from a subsequent paper sheet among a large number of paper sheets whose holding vacuum chambers are arranged side by side on the mounting surface. The feeding belt feeds paper sheets in a direction perpendicular to the suction direction by the holding vacuum chamber. Between the loading surface and the feeding belt, the feeding belt is in the same direction as the suction direction by the holding vacuum chamber. Two holding auxiliary vacuum chambers for sucking paper sheets are arranged in parallel in the paper sheet feeding direction, while the preceding paper sheets are sucked and held in the holding vacuum chamber and fed, Paper sheets are sucked and held in either one of the holding auxiliary vacuum chambers.
JP-A-7-117882 Japanese Patent Laid-Open No. 10-167482 JP-A-9-315605 Japanese Patent Laid-Open No. 11-11712

ところで、上述した従来の構成では、重送を防止するための手段として、規制部材や空気吹きつけ手段を配置しているが、特許文献1に記載するように、繰り出し用紙の腰の強さなど紙質に応じて規制部材が適宜に撓んで繰り出し量を規制する構成では、搬送手段を駆動して用紙を繰り出すときに、紙面に規制部材の縁が摺接するので、紙面に擦り傷が生じることがある。   By the way, in the conventional configuration described above, a regulating member and an air blowing means are arranged as means for preventing double feeding. However, as described in Patent Document 1, the strength of the feeding paper is low. In the configuration in which the regulating member is appropriately bent in accordance with the paper quality and the feeding amount is regulated, the edge of the regulating member is in sliding contact with the paper surface when the conveying means is driven to feed the paper, so that the paper surface may be scratched. .

また、特許文献2および3では、シート積載部に積載されている最下部のシートとその上にある他のシートとを分離する空気を吹き付ける装置が必要であり、特許文献4では、後行の紙葉を交互に保持する二つの保持用補助真空チャンバを必要とするので、装置が大型化するとともに、分離調整に手間がかかる問題がある。   Further, in Patent Documents 2 and 3, a device for blowing air that separates the lowermost sheet stacked on the sheet stacking unit from other sheets on the sheet is necessary. Since two auxiliary vacuum chambers for holding paper sheets alternately are required, there is a problem that the apparatus becomes large and that separation adjustment takes time.

本発明は上記した課題を解決するものであり、紙面上を摺動する規制部材や空気吹き付け装置を必要とせずに、コンパクトな構成において、斜行搬送等に起因するジャムの発生が起こらず、紙面に擦り傷を与えることなく、紙葉毎に確実に分離して重送を防止することができる給紙装置を提供することを目的とする。   The present invention solves the above-described problems, and does not require a regulating member or an air blowing device that slides on the paper surface.In a compact configuration, the occurrence of a jam caused by skew feeding or the like does not occur. It is an object of the present invention to provide a paper feeding device that can reliably separate each paper sheet and prevent double feeding without scratching the paper surface.

上記課題を解決するために、請求項1に係る本発明の給紙装置は、用紙を積載する用紙積載手段と、用紙積載手段に積載した用紙束の最下部の用紙を吸着分離して次段に搬送する吸着搬送手段を備え、用紙搬送方向において用紙を係止する捌き部材を設け、吸着搬送手段は捌き部材に対応する部位に捌き部材の下端より低い凹部を有するものである。   In order to solve the above-described problem, a paper feeding device according to a first aspect of the present invention is configured to adsorb and separate a paper stacking unit for stacking sheets and a lowermost sheet of a stack of sheets stacked on the sheet stacking unit. And a suction member that locks the paper in the paper transport direction. The suction transport means has a recess that is lower than the lower end of the web member in a portion corresponding to the web member.

上記した構成により、吸着搬送手段により用紙束から吸着分離されて搬送方向に移動する用紙は、吸着搬送手段の搬送面に吸着された状態で吸着搬送手段の凹部の形状に沿って撓み、捌き部材の下端を潜って紙面に擦り傷を与えることなく捌き部材を通過する。   With the configuration described above, the sheet that is attracted and separated from the sheet bundle by the suction conveyance means and moves in the conveyance direction is bent along the shape of the concave portion of the suction conveyance means while being attracted to the conveyance surface of the adsorption conveyance means, Passing through the scooping member without diving the bottom of the paper and scratching the paper.

吸着搬送手段が最下部の用紙を搬送する際に、最下部の用紙の上に重なった用紙は、撓むことなく平坦な形状を維持することで用紙搬送方向において捌き部材に係止される。
請求項2に係る本発明の給紙装置は、搬送手段に形成する凹部を用紙搬送方向と直交する方向の複数箇所に設け、各凹部に対応して捌き部材を設けたものである。
When the suction conveyance unit conveys the lowermost sheet, the sheet overlapped on the lowermost sheet is held by the winding member in the sheet conveyance direction by maintaining a flat shape without bending.
According to a second aspect of the present invention, the paper feeding device of the present invention is provided with concave portions formed in the conveying means at a plurality of locations in a direction perpendicular to the paper conveying direction, and provided with a separating member corresponding to each concave portion.

請求項3に係る本発明の給紙装置は、用紙を積載する用紙積載手段と、用紙積載手段に積載した用紙束の最下部の用紙を吸着分離して次段に搬送する吸着搬送手段を備え、吸着搬送手段は、吸着分離後の用紙を所定距離にわたって吸着搬送手段上から送り出した後に次段に到達させるものである。   According to a third aspect of the present invention, there is provided a sheet feeding device including a sheet stacking unit configured to stack sheets, and a suction transport unit configured to suck and separate the lowermost sheet of the stack of sheets stacked on the sheet stacking unit and transport the sheet to the next stage. The suction conveyance means is for delivering the paper after the suction separation over the predetermined distance from the suction conveyance means and then reaching the next stage.

上記した構成により、吸着搬送手段は吸着分離時に用紙を用紙束から吸着分離しながら所定搬送速度で搬送し、吸着分離時と同じ速度で同期搬送しながら用紙を次段へ到達させる。この際に、用紙は次段へ到達するまでに吸着搬送手段の吸着力が及ばない吸着搬送手段外の領域へ所定距離にわたって送り出され、用紙に吸着力が作用しない状態、もしくは用紙に作用する吸着搬送手段の吸着力が小さくなった状態で次段へ到達する。このため、次段の搬送手段が用紙の搬送を開始すると、用紙は吸着搬送手段上を滑りながら次段の搬送手段の搬送速度に同期して搬送される。よって、搬送速度が異なる吸着搬送手段と次段の搬送手段との間において円滑に用紙の受け渡しを行うことができる。   With the above-described configuration, the suction conveyance unit conveys the sheet at a predetermined conveyance speed while performing adsorption separation from the sheet bundle during adsorption separation, and causes the sheet to reach the next stage while performing synchronous conveyance at the same speed as during adsorption separation. At this time, the paper is sent over a predetermined distance to an area outside the suction conveyance means where the suction force of the suction conveyance means does not reach until reaching the next stage, or the suction force acting on the paper is not applied. The next stage is reached in a state where the suction force of the conveying means is reduced. For this reason, when the transport device of the next stage starts transporting the paper, the paper is transported in synchronization with the transport speed of the transport device of the next stage while sliding on the suction transport device. Therefore, it is possible to smoothly transfer the sheet between the suction conveyance unit and the next-stage conveyance unit having different conveyance speeds.

請求項4に係る本発明の給紙装置は、吸着搬送手段が用紙積載手段に積載した用紙束に対応する吸着領域と用紙搬送方向の終端側に対応する非吸着領域を有し、非吸着領域に対応する位置に用紙を吸着搬送手段に付勢する従動ローラを設けたものである。   According to a fourth aspect of the present invention, there is provided a sheet feeding device having a suction area corresponding to a bundle of sheets stacked on the paper stacking means by the suction conveyance means and a non-adsorption area corresponding to a terminal side in the paper conveyance direction. Is provided with a driven roller for urging the sheet toward the suction conveyance means.

請求項5に係る本発明の給紙装置は、用紙を積載する用紙積載手段と、用紙積載手段に積載した用紙束の最下部の用紙を吸着分離して次段に搬送する吸着搬送手段を備え、用紙積載手段が吸着搬送手段上において用紙の搬送方向後部を吸着搬送手段と非接触状態に保持するものである。   According to a fifth aspect of the present invention, there is provided a sheet feeding device including a sheet stacking unit configured to stack sheets, and a suction transport unit configured to suck and separate the lowermost sheet of the sheet bundle stacked on the sheet stacking unit and transport the sheet to the next stage. The sheet stacking means holds the rear part in the sheet conveying direction on the suction conveyance means in a non-contact state with the suction conveyance means.

上記した構成により、用紙積載手段に積載した用紙束の最下部の用紙は、用紙積載手段によって保持された搬送方向後部を除いて、全面的に吸着搬送手段の搬送面上に平坦に保持され、用紙の搬送方向後部は用紙積載手段から搬送面上に移動する際に非吸着状態から吸着状態へと変化する。   With the above configuration, the lowermost sheet of the stack of sheets stacked on the sheet stacking unit is held flat on the transport surface of the suction transport unit, except for the rear part in the transport direction held by the sheet stacking unit, The rear part in the sheet conveyance direction changes from the non-adsorption state to the adsorption state when moving from the sheet stacking unit onto the conveyance surface.

このため、用紙束の最下部の用紙とその上の用紙との分離を促進して重送を防止するとともに、折り癖のある用紙でも全体的に吸着搬送手段の搬送面上に吸着することで、吸着搬送手段による搬送力を用紙の全体に作用させて用紙の斜行やジャムの発生を防止する。   For this reason, separation of the lowermost sheet of the sheet bundle from the upper sheet is prevented to prevent double feeding, and even folded sheets are adsorbed on the conveyance surface of the adsorption conveyance means as a whole. Then, the conveyance force by the suction conveyance means is applied to the entire sheet to prevent the sheet from skewing and jamming.

請求項6に係る本発明の給紙装置は、用紙の搬送方向前部が搬送方向後部より高くなるように20°以上に傾斜した状態に用紙積載手段が用紙を保持するものである。
上記した構成により、用紙を水平に保持して積載した場合に、用紙の自重はその全てが紙葉同士を圧接する力として作用するが、傾斜する状態に保持して用紙の自重の一部を用紙搬送方向の後方へ向けて分散させることで、積載した用紙の紙葉間における摩擦力を低減して重送を防止する。
According to a sixth aspect of the present invention, the sheet stacking means holds the sheets in a state where the sheet stacking unit is inclined at an angle of 20 ° or more so that the front part in the sheet conveying direction is higher than the rear part in the conveying direction.
With the above configuration, when the paper is held horizontally and stacked, the weight of the paper acts as a force that presses the paper sheets together. Dispersing toward the rear in the paper transport direction reduces the frictional force between the sheets of the stacked paper and prevents double feeding.

以上のように本発明によれば、用紙搬送方向において用紙を係止する捌き部材を設け、吸着搬送手段が捌き部材に対応する部位に捌き部材の下端より低い凹部を有し、あるいは吸着搬送手段が吸着分離後の用紙を次段に到達するまでの所定距離において搬送し、あるいは用紙積載手段が吸着搬送手段上において用紙の搬送方向後部を吸着搬送手段と非接触状態に保持し、あるいは用紙の搬送方向前部が搬送方向後部より高くなるように20°以上に傾斜した状態に用紙を保持することにより、紙面上を摺動する規制部材や空気吹き付け装置を必要とせずに、コンパクトな構成において、斜行搬送等に起因するジャムの発生が起こらず、紙面に擦り傷を与えることなく、紙葉毎に確実に分離して重送を防止することができる。   As described above, according to the present invention, the separation member that locks the sheet in the sheet conveyance direction is provided, and the suction conveyance unit has a concave portion lower than the lower end of the separation member at the portion corresponding to the separation member, or the adsorption conveyance unit Transports the separated and separated paper at a predetermined distance until it reaches the next stage, or the paper stacking means holds the rear part in the paper conveyance direction on the suction conveying means in a non-contact state with the suction conveying means. By holding the paper in a state inclined at 20 ° or more so that the front part in the transport direction is higher than the rear part in the transport direction, a compact structure can be achieved without the need for a regulating member or an air blowing device that slides on the paper surface. In addition, it is possible to prevent jamming due to skew feeding and the like, reliably separating each paper sheet and preventing double feeding without causing scratches on the paper surface.

以下、本発明の実施の形態を図面に基づいて説明する。図1〜図7において、給紙装置1は吸着搬送手段をなす吸着搬送装置2を有している。この吸着搬送装置2は吸引給紙ベルト3を駆動ロール4と支持ロール5に掛け渡して配置し、吸引給紙ベルト3に囲まれた内部に吸引ファン6と吸引チャンバー7を配置している。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 7, the sheet feeding device 1 has a suction conveyance device 2 that constitutes a suction conveyance means. In this suction conveyance device 2, a suction paper feed belt 3 is arranged over a drive roll 4 and a support roll 5, and a suction fan 6 and a suction chamber 7 are arranged inside the suction paper feed belt 3.

吸引チャンバー7は、図6に示すように、吸引給紙ベルト3の軌道面8を形成するとともに、軌道面8に開口部9を有し、開口部9が吸引ファン6に対応している。軌道面8には開口部9に続く用紙搬送方向の前部側に軌道面8より一段低い凹部10を形成しており、吸着搬送時に吸引給紙ベルト3は凹部10の形状に倣って窪みを形成しながら軌道面8の上を摺動する。   As shown in FIG. 6, the suction chamber 7 forms a raceway surface 8 of the suction paper feed belt 3 and has an opening 9 in the raceway surface 8, and the opening 9 corresponds to the suction fan 6. The track surface 8 is formed with a recess 10 that is one step lower than the track surface 8 on the front side in the paper transport direction following the opening 9, and the suction paper feed belt 3 has a recess following the shape of the recess 10 during suction transport. It slides on the track surface 8 while forming.

吸引給紙ベルト3は複数の孔11を有し、孔11を通して吸引ファン6の吸引力を搬送面上の用紙12に作用させる。孔11は用紙12の1紙葉分毎に群をなし、複数群の孔11を吸引給紙ベルト3に設けている。   The suction paper feeding belt 3 has a plurality of holes 11, and the suction force of the suction fan 6 acts on the paper 12 on the transport surface through the holes 11. The holes 11 form a group for each sheet of the paper 12, and a plurality of groups of holes 11 are provided in the suction paper feeding belt 3.

吸引給紙ベルト3を介した吸引チャンバー7の上方には用紙12を載置する用紙積載手段をなす用紙載置台13を設けており、用紙載置台13は吸着搬送装置2の搬送面において用紙12の搬送方向後部を吸引給紙ベルト3から離間させて非接触状態に保持する。   Above the suction chamber 7 via the suction paper feeding belt 3, there is provided a paper placement table 13 that serves as a paper stacking means for placing the paper 12. The paper placement table 13 is provided on the conveyance surface of the suction conveyance device 2. The rear part in the transport direction is separated from the suction paper feeding belt 3 and is held in a non-contact state.

用紙搬送方向において用紙載置台13の前方には棒状の捌き部材14が吸引給紙ベルト3の搬送面上に高さ調整可能に垂下している。捌き部材14は用紙搬送方向において用紙12を係止するものであり、下端が用紙載置台13の用紙束の最下部の用紙12より低くなるように、位置調整する。   A bar-shaped separating member 14 hangs down on the conveying surface of the suction paper feeding belt 3 so as to be adjustable in height, in front of the paper mounting table 13 in the paper conveying direction. The separating member 14 locks the paper 12 in the paper transport direction, and the position is adjusted so that the lower end is lower than the lowermost paper 12 in the paper stack of the paper placing table 13.

捌き部材14は吸着搬送装置2の凹部10に対応し、凹部10は捌き部材14の下端より低い形状をなす。凹部10および捌き部材14は単数もしくは複数を配置するものであり、本実施の形態ではそれぞれ一対を配置している。また、吸着搬送装置2および用紙載置台13は、用紙12の搬送方向前部が搬送方向後部より高くなるように20°以上に傾斜した状態に用紙12を保持している。   The spreading member 14 corresponds to the recess 10 of the suction conveyance device 2, and the recess 10 has a shape lower than the lower end of the spreading member 14. One or a plurality of the recesses 10 and the rolling members 14 are arranged, and in the present embodiment, a pair is arranged. Further, the suction conveyance device 2 and the paper mounting table 13 hold the paper 12 in a state of being inclined at 20 ° or more so that the front part of the paper 12 in the conveyance direction is higher than the rear part in the conveyance direction.

用紙搬送方向において吸着搬送装置2の終端側には従動ローラ15aを配置しており、従動ローラ15aは吸引チャンバー7の前方に配置した支持ロール5に吸引給紙ベルト3を介して対向し、用紙12を吸引給紙ベルト3に付勢する。吸着搬送装置2は吸引チャンバー7において用紙束に対応する部位が吸着領域をなし、吸引チャンバー7から外れた位置、つまり従動ローラ15aに対応する部位が非吸着領域をなす。   A driven roller 15a is disposed on the terminal end side of the suction conveyance device 2 in the paper conveyance direction, and the driven roller 15a faces the support roll 5 arranged in front of the suction chamber 7 via the suction paper feeding belt 3, and the paper 12 is urged to the suction paper feeding belt 3. In the suction conveyance device 2, a portion corresponding to the sheet bundle in the suction chamber 7 forms a suction region, and a position away from the suction chamber 7, that is, a portion corresponding to the driven roller 15a forms a non-suction region.

吸着搬送装置2の終端位置、つまり従動ローラ15aから用紙搬送方向へ所定距離だけ離れた位置に次段の搬送手段である転送装置20を設けており、従動ローラ15aと転送装置20との間の搬送軌道上にはセンサー装置21を配置している。センサー装置21は光学式センサー等からなり、用紙12の紙葉の通過を検出する機能を担い、かつ重送を検出する機能を担っている。制御装置(図示省略)はセンサー装置21が出力する信号を受けて用紙12の通過枚数をカウントし、センサー装置21が重送を検出した場合は通過枚数にカウントせず、後述するリジェクト操作を行う。   A transfer device 20 which is a transport device of the next stage is provided at the end position of the suction conveyance device 2, that is, a position away from the driven roller 15a by a predetermined distance in the paper conveyance direction, and between the driven roller 15a and the transfer device 20 is provided. A sensor device 21 is disposed on the transport track. The sensor device 21 is composed of an optical sensor or the like, and has a function of detecting passage of paper sheets 12 and a function of detecting double feeding. The control device (not shown) receives the signal output from the sensor device 21 and counts the number of sheets 12 that have passed. If the sensor device 21 detects double feeding, the controller 21 does not count the number of passing sheets and performs a reject operation described later. .

転送装置20は、円筒状の転送ローラ22と、転送ローラ22の外周面との間に搬送軌道を形成するガイド23を備えており、ガイド23は用紙搬送方向の始端側が吸引給紙ベルト3の上に位置している。ガイド23の複数の適当位置には従動ローラ15a、15b、15cを配置しており、従動ローラ15a、15b、15cはガイド23に形成した開口を通して、吸引給紙ベルト3もしくは転送ローラ22に摺接している。   The transfer device 20 includes a cylindrical transfer roller 22 and a guide 23 that forms a transport track between the outer peripheral surface of the transfer roller 22, and the guide 23 has a suction feed belt 3 at the start end side in the paper transport direction. Located on the top. Driven rollers 15 a, 15 b, 15 c are arranged at a plurality of appropriate positions of the guide 23, and the driven rollers 15 a, 15 b, 15 c are in sliding contact with the suction paper feeding belt 3 or the transfer roller 22 through openings formed in the guide 23. ing.

ガイド23の用紙搬送方向の終端側には、リジェクト分岐部材24を配置しており、リジェクト分岐部材24の前方にはリジェクト紙受け部材25と、羽根車26を設けている。リジェクト分岐部材24は、用紙12をリジェクト紙受け部材25に向けて案内する位置と、用紙12を羽根車26に向けて案内する位置とにわたって回動し、通常において用紙12を羽根車26に向けて案内する位置にあり、制御装置がリジェクト操作を指示するときに用紙12をリジェクト紙受け部材25に向けて案内する位置に変移する。   A reject branching member 24 is disposed on the terminal end side of the guide 23 in the sheet conveyance direction, and a reject paper receiving member 25 and an impeller 26 are provided in front of the reject branching member 24. The reject branching member 24 rotates between a position where the paper 12 is guided toward the reject paper receiving member 25 and a position where the paper 12 is guided toward the impeller 26. Normally, the paper 12 is directed toward the impeller 26. The sheet 12 is shifted to a position for guiding the sheet 12 toward the reject sheet receiving member 25 when the control device instructs a reject operation.

羽根車26はハブ27の周囲に等間隔で複数の羽根28を配置しており、転送装置20により搬送する用紙12を羽根28の間に受け止めて計数用紙受け部材29の上に反転させて排出する。   The impeller 26 has a plurality of blades 28 arranged at equal intervals around the hub 27. The paper 12 conveyed by the transfer device 20 is received between the blades 28, inverted on the counting paper receiving member 29, and discharged. To do.

計数用紙受け部材29は、用紙12を受け止める受け台30と、受け台30の両側に配置した側板31と、振動モータ32を備えており、受け台30に保持する用紙12を振動させながら用紙12の一辺が側板31に沿うように整列させる。   The counting paper receiving member 29 includes a receiving base 30 for receiving the paper 12, side plates 31 disposed on both sides of the receiving base 30, and a vibration motor 32. The counting paper receiving member 29 vibrates the paper 12 held on the receiving base 30 while vibrating the paper 12. Are aligned so that one side is along the side plate 31.

計数用紙受け部材29の上方には送風ダクト33を配置しており、送風ダクト33は送風口34が受け台30に向けて開口し、基端側が吸引ファン6の排気側に連通している。吸引ファン6の排気は送風ダクト33を通してを受け台30の上の用紙12に向けて噴出し、噴出した空気が用紙12と用紙12を離間させることで振動による整列を促進する。   A blower duct 33 is disposed above the counting paper receiving member 29, and the blower duct 33 has a blower opening 34 that opens toward the cradle 30, and a base end side that communicates with the exhaust side of the suction fan 6. Exhaust air from the suction fan 6 is ejected through the air duct 33 toward the paper 12 on the receiving table 30, and the ejected air separates the paper 12 and the paper 12 to promote alignment by vibration.

以下、上記した構成における作用を説明する。吸着搬送装置2は吸引給紙ベルト3の孔11を通して作用する吸引ファン6の吸引力によって用紙載置台13に積載した用紙束の最下部の用紙12を吸引給紙ベルト3の搬送面に吸着し、吸引給紙ベルト3の移動に伴って用紙束から用紙12を分離して搬送する。   Hereinafter, the operation of the above-described configuration will be described. The suction conveyance device 2 adsorbs the lowermost sheet 12 of the sheet bundle loaded on the sheet loading table 13 to the conveyance surface of the suction sheet feeding belt 3 by the suction force of the suction fan 6 acting through the hole 11 of the suction sheet feeding belt 3. Then, the sheet 12 is separated from the sheet bundle and conveyed along with the movement of the suction sheet feeding belt 3.

このとき、用紙束の最下部の用紙12は、用紙載置台13によって保持された搬送方向後部を除いて、全面的に吸着搬送手段の搬送面上に吸着されて平坦に保持され、用紙12の搬送方向後部は用紙載置台13から搬送面上に移動する際に非吸着状態から吸着状態へと変化する。   At this time, the lowermost sheet 12 of the sheet bundle is sucked and held flat on the conveying surface of the suction conveying means, except for the rear part in the conveying direction held by the sheet placing table 13. The rear part in the conveyance direction changes from the non-adsorption state to the adsorption state when moving from the sheet mounting table 13 onto the conveyance surface.

このため、用紙束の最下部の用紙12とその上の隣接する用紙12との分離を促進して重送を防止することができ、折り癖のある用紙、例えば紙幣や選挙投票用紙でも、全体的に吸着搬送装置2の吸引給紙ベルト3の搬送面上に吸着して吸着搬送装置2による搬送力を用紙12の全体に作用させることで、用紙の斜行やジャムの発生を防止できる。   For this reason, separation between the lowermost sheet 12 of the sheet bundle and the adjacent sheet 12 on the sheet stack can be promoted to prevent double feed. In particular, by adsorbing onto the conveyance surface of the suction paper feeding belt 3 of the suction conveyance device 2 and causing the conveyance force of the adsorption conveyance device 2 to act on the entire paper 12, it is possible to prevent the skew of the paper and the occurrence of jamming.

また、用紙載置台13および吸着搬送装置2が、用紙12の搬送方向前部が搬送方向後部より高くなるように20°以上に傾斜した状態に用紙12を保持するので、用紙12の自重の一部が用紙搬送方向の後方へ向けて分散され、積載した用紙12の紙葉間における摩擦力が低減されることで重送を防止できる。   In addition, since the paper mounting table 13 and the suction conveyance device 2 hold the paper 12 in a state of being inclined at 20 ° or more so that the front part of the paper 12 in the conveyance direction is higher than the rear part in the conveyance direction, The parts are dispersed toward the rear in the sheet conveying direction, and the frictional force between the sheets of the stacked sheets 12 is reduced, thereby preventing double feeding.

吸着搬送装置2により用紙束から吸着分離されて吸引給紙ベルト3とともに用紙搬送方向に移動する用紙12は、図8に示すように、凹部10に対応する位置において、吸引給紙ベルト3の搬送面に吸着された状態で凹部10の形状に沿って撓み、捌き部材14の下端を潜って捌き部材14を通過する。したがって、捌き部材14が用紙12の紙面に摺接せず、紙面に擦り傷を与えることがない。   As shown in FIG. 8, the sheet 12 that is attracted and separated from the sheet bundle by the suction conveyance device 2 and moves in the sheet conveyance direction together with the suction sheet feeding belt 3 is conveyed by the suction sheet feeding belt 3 at a position corresponding to the recess 10. It bends along the shape of the recess 10 in the state of being attracted to the surface, and passes through the rolling member 14 while diving at the lower end of the rolling member 14. Therefore, the scooping member 14 does not slidably contact the paper surface of the paper 12, and the paper surface is not scratched.

吸着搬送装置2が最下部の用紙12を搬送する際に、最下部の用紙12の上に重なった用紙は、撓むことなく平坦な形状を維持することで用紙搬送方向において捌き部材14に係止され、重送が防止される。   When the suction conveyance device 2 conveys the lowermost sheet 12, the sheet overlapped on the lowermost sheet 12 is kept in a flat shape without being bent, and thus is related to the winding member 14 in the sheet conveyance direction. Stopped and double feed is prevented.

凹部10において捌き部材14を通過する用紙12は吸引チャンバー7の外へ送り出されつつ、従動ローラ15aに付勢されながら吸引給紙ベルト3によって吸着分離時の所定搬送速度で同期搬送され、センサー装置21によって通過枚数がカウントされる。   The sheet 12 passing through the separating member 14 in the recess 10 is sent out of the suction chamber 7 and is synchronously transported by the suction paper feed belt 3 at a predetermined transport speed during suction separation while being urged by the driven roller 15a. 21 counts the number of passing sheets.

吸引給紙ベルト3によって搬送する用紙12は吸着搬送装置2の吸着力が及ばない領域へ所定距離にわたって送り出された位置で次段の転送装置20に到達する。このため、用紙12は吸着搬送装置2による吸着力が作用しない状態、つまり用紙12の搬送方向後部が従動ローラ15aと吸引給紙ベルト3によって送り出される状態か、もしくは用紙12に作用する吸着搬送装置2の吸着力が小さくなった状態、つまり吸引チャンバー7の上方に位置する用紙12の面積が少ない状態で次段の転送装置20へ到達する。   The paper 12 transported by the suction paper feeding belt 3 reaches the transfer device 20 at the next stage at a position where the paper 12 is fed over a predetermined distance to an area where the suction force of the suction transport device 2 does not reach. For this reason, the sheet 12 is in a state where the suction force by the suction conveyance device 2 does not act, that is, the rear part in the conveyance direction of the sheet 12 is sent out by the driven roller 15a and the suction paper feeding belt 3, or the suction conveyance device that acts on the sheet 12 2 arrives at the transfer device 20 at the next stage in a state where the suction force of 2 is small, that is, in a state where the area of the paper 12 located above the suction chamber 7 is small.

このため、転送装置20が転送ローラ22と従動ローラ15bによる搬送を開始すると、用紙12は吸引給紙ベルト3の上を滑りながら転送装置20の搬送速度に同期して搬送され、ジャムの発生を防止するために吸着搬送装置2より早い速度で搬送する転送装置20と、搬送速度が異なる吸着搬送装置2との間において円滑に用紙12の受け渡しを行うことができ、斜行が発生してもその度合いの増加を抑制できる。   For this reason, when the transfer device 20 starts to be transported by the transfer roller 22 and the driven roller 15b, the paper 12 is transported in synchronization with the transport speed of the transfer device 20 while sliding on the suction paper feed belt 3, and jamming occurs. In order to prevent this, the paper 12 can be smoothly transferred between the transfer device 20 that transports at a higher speed than the suction transport device 2 and the suction transport device 2 having a different transport speed. The increase in the degree can be suppressed.

従動ローラ15cと転送ローラ22の間を通る用紙12はリジェクト分岐部材24に案内されて、羽根車26の羽根28の間に排出される。羽根車26はその回転により、計数用紙受け部材29の上に用紙12を反転させて排出する。   The sheet 12 passing between the driven roller 15 c and the transfer roller 22 is guided by the reject branching member 24 and discharged between the blades 28 of the impeller 26. The impeller 26 rotates and rotates the paper 12 on the counting paper receiving member 29 and discharges it.

ところで、用紙12の間に何らかの理由で粘着物が介在した場合や、湿度等の環境状況により、吸着搬送装置2が複数枚の用紙12を同時に吸着して重送することがある。このため、制御装置はセンサー装置21が光の透過度の違いによって用紙12が重送されたことを検知し、あるいは用紙12の通過を検出する状態が一枚の用紙12の通過に要する時間を越えて継続する場合に、リジェクト分岐部材24をリジェクト紙受け部材25に向けて変位させる。   By the way, when a sticky substance is interposed between the sheets 12 for some reason, or depending on environmental conditions such as humidity, the suction conveyance device 2 may simultaneously suck and double-feed a plurality of sheets 12. For this reason, the control device detects the time required for the passage of one sheet 12 when the sensor device 21 detects that the sheet 12 has been double-fed due to the difference in light transmittance, or when the passage of the sheet 12 is detected. When continuing beyond this, the reject branch member 24 is displaced toward the reject paper receiving member 25.

重送された複数枚の用紙12は従動ローラ15cと転送ローラ22の間からリジェクト分岐部材24に案内されてリジェクト紙受け部材25の上に排出される。制御装置はセンサー装置21が重送された用紙12の後端が通過したことを検知して所定時間が経過した時点でリジェクト分岐部材24を羽根車26に向く方向に復帰させる。   A plurality of sheets of paper 12 that have been double fed are guided by the reject branching member 24 from between the driven roller 15 c and the transfer roller 22 and discharged onto the reject paper receiving member 25. The control device detects that the rear end of the paper 12 that has been double-fed by the sensor device 21 has passed, and returns the reject branch member 24 in the direction toward the impeller 26 when a predetermined time has elapsed.

制御装置は重送された複数枚の用紙12をカウント数に加算せず、リジェクト紙受け部材25の上に排出された用紙12は用紙載置台13に戻すことで再度搬送されてカウントされる。したがって、重送が発生しても装置を停止させる必要がなく、また全ての用紙を用紙載置台13に戻して再計数する必要がなく、重送された用紙12のみを再度計数するだけでよい。   The control device does not add the multiple sheets 12 that have been multi-fed to the count number, and the sheets 12 discharged onto the reject paper receiving member 25 are returned to the sheet placement table 13 and conveyed again to be counted. Therefore, it is not necessary to stop the apparatus even if double feeding occurs, and it is not necessary to return all the sheets to the sheet placing table 13 and recount, and only the double fed sheets 12 need be counted again. .

計数用紙受け部材29の受け台30の上に排出された用紙12は、送風口34から噴出す空気によって用紙12の間が離間するように付勢されながら、振動モータ32による振動を受けて一辺が側板31に沿うように整列される。   The sheet 12 discharged onto the receiving tray 30 of the counting sheet receiving member 29 is subjected to vibration by the vibration motor 32 while being urged so as to be separated from the sheet 12 by the air blown from the air blowing port 34. Are aligned along the side plate 31.

本発明の実施の形態における給紙装置を示す正面図1 is a front view showing a sheet feeding device according to an embodiment of the present invention. 同実施の形態における給紙装置を示す斜視図The perspective view which shows the paper feeder in the embodiment 同実施の形態における給紙装置を示す斜視図The perspective view which shows the paper feeder in the embodiment 同実施の形態における給紙装置を示す斜視図The perspective view which shows the paper feeder in the embodiment 図4における吸引給紙ベルトを除去した給紙装置を示す斜視図FIG. 4 is a perspective view showing a paper feeding device from which the suction paper feeding belt in FIG. 同実施の形態における給紙装置の吸引チャンバーを示す斜視図The perspective view which shows the suction chamber of the paper feeder in the embodiment 同実施の形態における給紙装置を示す背面図Rear view showing the paper feeding device in the embodiment 同実施の形態における給紙装置を示す要部拡大図The principal part enlarged view which shows the paper feeder in the embodiment

符号の説明Explanation of symbols

1 給紙装置
2 吸着搬送装置
3 吸引給紙ベルト
4 駆動ロール
5 支持ロール
6 吸引ファン
7 吸引チャンバー
8 軌道面
9 開口部
10 凹部
11 孔
12 用紙
13 用紙載置台
14 捌き部材
15a、b、c 従動ローラ
20 転送装置
21 センサー装置
22 転送ローラ
23 ガイド
24 リジェクト分岐部材
25 リジェクト紙受け部材
26 羽根車
27 ハブ
28 羽根
29 計数用紙受け部材
30 受け台
31 側板
32 振動モータ
33 送風ダクト
34 送風口
DESCRIPTION OF SYMBOLS 1 Paper feeder 2 Adsorption conveyance apparatus 3 Suction paper feed belt 4 Drive roll 5 Support roll 6 Suction fan 7 Suction chamber 8 Track surface 9 Opening part 10 Recess 11 Hole 12 Paper 13 Paper mounting table 14 Rolling member 15a, b, c Follow Roller 20 Transfer device 21 Sensor device 22 Transfer roller 23 Guide 24 Reject branch member 25 Reject paper receiving member 26 Impeller 27 Hub 28 Blade 29 Count paper receiving member 30 Receptacle 31 Side plate 32 Vibration motor 33 Blower duct 34 Blower port

Claims (7)

用紙を積載する用紙積載手段と、用紙積載手段に積載した用紙束の最下部の用紙を吸着分離して、軌道面上を摺動する吸引給紙ベルトで次段に搬送する吸着搬送手段を備え、用紙積載手段の前方に下端が用紙束の最下部の用紙より低くて用紙搬送方向において用紙を係止する捌き部材を設け、吸着搬送手段は捌き部材に対応する部位に捌き部材の下端より低い凹部を有することを特徴とする給紙装置。 A sheet loading means for loading sheets and a suction conveying means for sucking and separating the lowermost sheet of the sheet bundle loaded on the sheet loading means and conveying to the next stage by a suction sheet feeding belt sliding on the track surface The paper stacking means is provided in front of the paper stacking means with a lower end lower than the lowermost paper in the paper bundle and locking the paper in the paper conveyance direction, and the suction conveyance means is lower than the lower end of the separation member at a portion corresponding to the separation member. A paper feeding device having a recess. 用紙を積載する用紙積載手段と、用紙積載手段に積載した用紙束の最下部の用紙を吸着分離して、軌道面上を摺動する吸引給紙ベルトで次段に搬送する吸着搬送手段を備え、用紙積載手段の前方に用紙搬送方向において用紙を係止する捌き部材を設け、吸着搬送手段は捌き部材に対応する部位に捌き部材の下端より低い凹部を有し、吸引給紙ベルトは、凹部に対応する位置において搬送面に用紙を吸着した状態で凹部の形状に沿って撓むことを特徴とする給紙装置。 A sheet loading means for loading sheets and a suction conveying means for sucking and separating the lowermost sheet of the sheet bundle loaded on the sheet loading means and conveying them to the next stage by a suction sheet feeding belt sliding on the track surface A separating member for locking the sheet in the sheet conveying direction is provided in front of the sheet stacking unit , the suction conveying unit has a recess lower than the lower end of the separating member at a portion corresponding to the separating member , A sheet feeding device that bends along the shape of the recess while adhering the sheet to the conveyance surface at a position corresponding to the sheet . 搬送手段に形成する凹部を用紙搬送方向と直交する方向の複数箇所に設け、各凹部に対応して捌き部材を設けたことを特徴とする請求項1または2に記載の給紙装置。   The paper feeding device according to claim 1 or 2, wherein concave portions formed in the conveying means are provided at a plurality of locations in a direction perpendicular to the paper conveying direction, and a separating member is provided corresponding to each concave portion. 吸着搬送手段は、吸着分離後の用紙を所定距離にわたって吸着搬送手段上から送り出した後に次段に到達させることを特徴とする請求項1または2に記載の給紙装置。 The sheet feeding device according to claim 1, wherein the suction conveyance unit causes the paper after the suction separation to be delivered from the suction conveyance unit over a predetermined distance and then reaches the next stage . 吸着搬送手段が用紙積載手段に積載した用紙束に対応する吸着領域と用紙搬送方向の終端側に対応する非吸着領域を有し、非吸着領域に対応する位置に用紙を吸着搬送手段に付勢する従動ローラを設けたことを特徴とする請求項1または2に記載の給紙装置。 The suction conveyance means has a suction area corresponding to the sheet bundle loaded on the paper stacking means and a non-adsorption area corresponding to the end side in the paper conveyance direction, and biases the paper to the suction conveyance means at a position corresponding to the non-adsorption area The paper feeding device according to claim 1 , further comprising a driven roller that performs the following operation . 用紙積載手段が吸着搬送手段上において用紙の搬送方向後部を吸着搬送手段と非接触状態に保持することを特徴とする請求項1または2に記載の給紙装置。 3. The sheet feeding device according to claim 1, wherein the sheet stacking unit holds the rear part in the sheet conveyance direction on the suction conveyance unit in a non-contact state with the adsorption conveyance unit . 用紙の搬送方向前部が搬送方向後部より高くなるように20°以上に傾斜した状態に用紙積載手段が用紙を保持することを特徴とする請求項1または2に記載の給紙装置。 The sheet feeding device according to claim 1 or 2, wherein the sheet stacking unit holds the sheet in a state where the sheet stacking unit is inclined at an angle of 20 ° or more so that a front part in the sheet conveyance direction is higher than a rear part in the conveyance direction .
JP2005173067A 2005-06-14 2005-06-14 Paper feeder Expired - Fee Related JP4549238B2 (en)

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Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541580A (en) * 1977-06-06 1979-01-08 Toshiba Corp Feeding and transporting device of paper, etc.
JPS56104928U (en) * 1980-01-09 1981-08-15
JPS5767435A (en) * 1980-10-13 1982-04-24 Ricoh Co Ltd Paper feeder
JPS61151935U (en) * 1985-03-13 1986-09-19
JPS61163252U (en) * 1985-03-29 1986-10-09
JPS6293141A (en) * 1985-10-18 1987-04-28 Fuji Xerox Co Ltd Paper sheet
JPH0488434U (en) * 1990-12-13 1992-07-31
JPH05229671A (en) * 1992-02-17 1993-09-07 Sharp Corp Paper feeding device
JPH0654649U (en) * 1992-12-25 1994-07-26 株式会社不二レーベル A device to prevent two sheets from sticking out
JPH06227691A (en) * 1990-09-11 1994-08-16 Ward Holding Co Inc Sheet feeder for corugated paper
JPH07117882A (en) * 1993-10-22 1995-05-09 Ricoh Elemex Corp Paper sheet supply device
JPH0724836U (en) * 1992-11-17 1995-05-12 株式会社不二レーベル Plate-shaped material feeding device
JPH0891604A (en) * 1994-09-27 1996-04-09 Canon Inc Sheet feeder and image forming device
JPH09315605A (en) * 1996-06-03 1997-12-09 Canon Inc Paper feeder, and image forming device equipped with it
JPH10167482A (en) * 1996-12-06 1998-06-23 Canon Inc Sheet feeding device and image forming device
JPH1111712A (en) * 1997-06-17 1999-01-19 Nec Corp Paper sheet feeding device
JP2000211755A (en) * 1999-01-26 2000-08-02 Ricoh Co Ltd Sheet feeding device

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541580A (en) * 1977-06-06 1979-01-08 Toshiba Corp Feeding and transporting device of paper, etc.
JPS56104928U (en) * 1980-01-09 1981-08-15
JPS5767435A (en) * 1980-10-13 1982-04-24 Ricoh Co Ltd Paper feeder
JPS61151935U (en) * 1985-03-13 1986-09-19
JPS61163252U (en) * 1985-03-29 1986-10-09
JPS6293141A (en) * 1985-10-18 1987-04-28 Fuji Xerox Co Ltd Paper sheet
JPH06227691A (en) * 1990-09-11 1994-08-16 Ward Holding Co Inc Sheet feeder for corugated paper
JPH0488434U (en) * 1990-12-13 1992-07-31
JPH05229671A (en) * 1992-02-17 1993-09-07 Sharp Corp Paper feeding device
JPH0724836U (en) * 1992-11-17 1995-05-12 株式会社不二レーベル Plate-shaped material feeding device
JPH0654649U (en) * 1992-12-25 1994-07-26 株式会社不二レーベル A device to prevent two sheets from sticking out
JPH07117882A (en) * 1993-10-22 1995-05-09 Ricoh Elemex Corp Paper sheet supply device
JPH0891604A (en) * 1994-09-27 1996-04-09 Canon Inc Sheet feeder and image forming device
JPH09315605A (en) * 1996-06-03 1997-12-09 Canon Inc Paper feeder, and image forming device equipped with it
JPH10167482A (en) * 1996-12-06 1998-06-23 Canon Inc Sheet feeding device and image forming device
JPH1111712A (en) * 1997-06-17 1999-01-19 Nec Corp Paper sheet feeding device
JP2000211755A (en) * 1999-01-26 2000-08-02 Ricoh Co Ltd Sheet feeding device

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