JPH03172245A - Paper feeder - Google Patents
Paper feederInfo
- Publication number
- JPH03172245A JPH03172245A JP31104189A JP31104189A JPH03172245A JP H03172245 A JPH03172245 A JP H03172245A JP 31104189 A JP31104189 A JP 31104189A JP 31104189 A JP31104189 A JP 31104189A JP H03172245 A JPH03172245 A JP H03172245A
- Authority
- JP
- Japan
- Prior art keywords
- air
- paper
- blower
- chamber
- hopper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007664 blowing Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003708 edge detection Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は給紙装置に係り、特に枚葉紙（以下、用紙とい
う。）の真空分離の信頼性が向上した給紙装置に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feeding device, and more particularly to a paper feeding device with improved reliability in vacuum separation of sheets (hereinafter referred to as paper).
従来のこの種のものは、特開昭６２−６５８５３号公報
に記載のように、１個のブロアで用紙の吸引吸着と捌き
を行い、この場合、用紙のカールが大きくなる対策とし
て、吸着ベルト又は捌き用空気噴出口の設置角度を変化
させ、用紙の吸引吸着及び捌きを確実に行おうとしてい
た。As described in Japanese Patent Application Laid-Open No. 62-65853, conventional devices of this type use a single blower to suction and separate the paper. Alternatively, attempts have been made to ensure the suction and suction of paper and the handling of paper by changing the installation angle of the air outlet for handling.
〔発明が解決しようとするａｇ。[ag that the invention seeks to solve.
しかしながら上記の従来技術は、装置コスト及び製品製
造上の難しさの点について配慮がされておらず、実用化
が困翅であった。However, the above-mentioned conventional technology does not take into account the cost of the device and the difficulty in manufacturing the product, making it difficult to put it into practical use.
また、用紙カールの形態は種々存在しており。Further, there are various forms of paper curl.
光学式センサアレイで用紙カール量やカール形態を検出
することは不可能であるという問題があった。There has been a problem in that it is impossible to detect the amount and form of paper curl using an optical sensor array.
この発明の目的は、ホッパ内の用紙のカール発生量を減
少させることにある。An object of the present invention is to reduce the amount of curling of paper in the hopper.
上記目的を達成するために本発明は、用紙を堆積したホ
ッパと、該ホッパ内の用紙を吸引吸着する開孔部を有す
る吸着ベルト及び該吸着ベルトの掛け回わされた負圧チ
ャンバと、前記ホッパ内に堆積された用紙を捌く空気を
噴出す空気噴出口の設けられた空気充気室と、該空気充
気室に送気して圧力を上昇させる吹出しブロアとからな
る給紙装置において、前記空気充気室と前記吹出しブロ
アとの間に、該吹出しブロアから該空気充気室へ送気す
る空気を冷却する熱交換器を設けたことを特徴とするも
のである。In order to achieve the above object, the present invention provides a hopper in which sheets are piled up, a suction belt having an opening for sucking and suctioning the sheets in the hopper, a negative pressure chamber around which the suction belt is wrapped, and A paper feeding device comprising an air filling chamber provided with an air outlet that blows out air to dispose of sheets accumulated in a hopper, and a blower blowing air into the air filling chamber to increase the pressure. The present invention is characterized in that a heat exchanger is provided between the air filling chamber and the blowing blower to cool the air sent from the blowing blower to the air filling chamber.
上記構成によれば、吹出しブロアと用紙捌き用空気噴出
口との間の熱交換器によって冷却されるので、噴出口か
らの空気流の温度上昇が低くおさえられる。そのため用
紙のカール発生が防止され。According to the above configuration, since the air is cooled by the heat exchanger between the blower and the paper handling air outlet, the temperature rise of the air flow from the outlet can be suppressed to a low level. This prevents the paper from curling.
真空分離部に与える障害を抑止することができる。It is possible to prevent damage to the vacuum separation section.
以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
第１図は、真空分離装置の概略構成斜視図である。昇降
装置２がホッパ４に堆積された用紙６を上下動し、用紙
上端検出センサ８により、用紙上端の位置決めがなされ
る。該昇降装置２及び用紙上端検出センサ８は、ここで
は記していない装置の側板に設置されている。FIG. 1 is a schematic perspective view of the vacuum separation device. The elevating device 2 moves up and down the paper 6 stacked in the hopper 4, and the paper upper end detection sensor 8 positions the upper end of the paper. The lifting device 2 and the paper top edge detection sensor 8 are installed on a side plate of the device, which is not shown here.
用紙６の分離を容易にするとともに確実性を増すため、
空気充気室１０から噴出口を通して、空気流をホッパ４
内の上層部の用紙６に向けている。In order to facilitate separation of the paper 6 and increase reliability,
The air flow is passed from the air plenum chamber 10 to the hopper 4 through the spout.
It is directed toward the upper layer of paper 6 inside.
最上段の用紙６を１枚のみ吸引して下流に給送するため
、吸引孔を有した吸着ベルト１２が、装置側板に回転自
在に設けた駆動プーリと従動プーリ間に張られ、吸引チ
ャンバ１４の負圧を吸引孔を通して用紙６に作用させて
、最上段の用紙のみを吸着ベルト１２が吸着する。この
吸着ベルト１２が回動することにより、最上段の用紙は
下流へ給送される。In order to suck only one sheet of paper 6 on the top tier and feed it downstream, a suction belt 12 having suction holes is stretched between a drive pulley and a driven pulley rotatably provided on the side plate of the apparatus, and is attached to a suction chamber 14. Negative pressure is applied to the paper 6 through the suction hole, and the suction belt 12 attracts only the topmost paper. As this suction belt 12 rotates, the paper in the uppermost stage is fed downstream.
吸引チャンバ１４の負圧と空気充気室ｌＯの正圧とは、
ブロア１６によって発生させられる。このブロア１６と
空気充気室１０との間に熱交換器１８を設置し噴出口か
らでる空気流の温度を下げている。The negative pressure of the suction chamber 14 and the positive pressure of the air filling chamber 1O are:
It is generated by the blower 16. A heat exchanger 18 is installed between the blower 16 and the air-filled chamber 10 to lower the temperature of the air flow coming out of the jet port.
尚、符号２０は給紙装置の駆動制御回路である。Note that the reference numeral 20 is a drive control circuit for the paper feeding device.
第２図のグラフは、熱交換器１８の入口前Ａ点の空気流
温度と、熱交換器１８の出口後Ｂ点の空気流温度と、ホ
ッパ内の６点の各温度の変化をブロア１６の起動時から
の時間経過に対して示したものである。熱交換器１８の
入口前Ａ点での空気流温度が５０℃を超えて上昇しても
、空気充気室１０に入る空気流温度は３６℃以下に保た
れ、しかも、ホッパ内温度３２℃に対してプラス４℃に
過ぎない、これにより、ホッパ４内に堆積された用紙６
の分離に障害を及ぼす程のカール発生は防止することが
できる。The graph in FIG. 2 shows the airflow temperature at point A before the inlet of the heat exchanger 18, the airflow temperature at point B after the exit of the heat exchanger 18, and the change in temperature at six points in the hopper of the blower 16. This figure shows the passage of time from the time of startup. Even if the airflow temperature at point A in front of the inlet of the heat exchanger 18 rises above 50°C, the airflow temperature entering the air charging chamber 10 is kept below 36°C, and the hopper internal temperature is 32°C. As a result, the paper 6 deposited in the hopper 4
It is possible to prevent curling to the extent that it impedes separation.
また第３図は本実施例に用いられる熱交換器の一例を示
す斜視図である。ブロア１６からの空気流は吸引「１２
２からインタークーラ２４内に入り。Further, FIG. 3 is a perspective view showing an example of a heat exchanger used in this embodiment. The air flow from the blower 16 is
Enter the intercooler 24 from 2.
ここで冷却ファン２６によって冷却され、排出口２８か
ら空気充気室１０へ送気される１本実施例ではブロア１
６からの空気流を外気によって冷却しているが、冷媒と
しての他の媒体を用いることもできる。In this embodiment, a blower 1 is cooled by a cooling fan 26 and sent to the air filling chamber 10 from an outlet 28.
Although the airflow from 6 is cooled by outside air, other media as refrigerant can also be used.
上述のとおり本発明によれば、用紙捌き用の噴出し空気
流の温度によってホッパ内に堆積された用紙のカール量
を小さく抑制できるので、用紙分離部の障害発生率が低
下し、信頼性の向上した給紙装置となる。As described above, according to the present invention, the amount of curl of paper accumulated in the hopper can be suppressed by the temperature of the ejected air flow for paper separation, thereby reducing the failure rate of the paper separation section and improving reliability. This results in an improved paper feeding device.
また、用紙カール量が減少することによって、分離可能
な紙種の範囲が拡大される。Furthermore, by reducing the amount of paper curl, the range of paper types that can be separated is expanded.
第１図は本発明の一実施例を示す概略構成斜視図、第２
図は熱交換器の入口前と出口後の空気流及びホッパ内の
温度変化を示すグラフ、第３図は本実施例に用いた熱交
換器の一例を示す斜視図である。Fig. 1 is a schematic perspective view showing an embodiment of the present invention;
The figure is a graph showing the air flow before and after the inlet of the heat exchanger and the temperature change inside the hopper, and FIG. 3 is a perspective view showing an example of the heat exchanger used in this example.
Claims (1)
吸引吸着する開孔部を有する吸着ベルト及び該吸着ベル
トの掛け回わされた負圧チャンバと、前記ホッパ内に堆
積された枚葉紙を捌く空気を噴出す空気噴出口の設けら
れた空気充気室と、該空気充気室に送気して圧力を上昇
させる吹出しブロアとからなる給紙装置において、前記
空気充気室と前記吹出しブロアとの間に、該吹出しブロ
アから該空気充気室へ送気する空気を冷却する熱交換器
を設けたことを特徴とする給紙装置。 ２、枚葉紙を堆積したホッパと、該ホッパ内の枚葉紙を
吸引吸着する開孔部を有する吸着ベルト及び該吸着ベル
トの掛け回わされた負圧チャンバと、前記ホッパ内に堆
積された枚葉紙を捌く空気を噴出す空気噴出口の設けら
れた空気充気室と、該空気充気室に送気して圧力を上昇
させる吹出しブロアとからなる給紙装置において、前記
空気充気室と前記吹出しブロアとの間に、該吹出しブロ
アからの空気を外気で冷却する熱交換器を設け、該熱交
換器によって該空気充気室へ送気する空気の温度を低減
するものであることを特徴とする給紙装置。 ３、給紙装置のホッパ内に堆積された枚葉紙を捌く空気
を噴出す空気噴出口の設けられた空気充気室と、該空気
充気室に送気して圧力を上昇させる吹出しブロアとの間
にインタークーラを設け、該インタークーラによって該
吹出しブロアから該空気充気室へ送気する空気の温度を
低減して、前記空気噴出口からの枚葉紙捌き用空気流の
温度上昇を調整する給紙装置の空気流の温度調整方法。 ４、給紙装置のホッパ内に堆積された枚葉紙を捌く空気
を噴出す空気噴出口の設けられた空気充気室と、該空気
充気室に送気して圧力を上昇させる吹出しブロアとの間
に設けられ、該吹出しブロアから該空気充気室へ送気す
る空気の温度を低減して、前記空気噴出口からの枚葉紙
捌き用空気流の温度上昇を調整するものである熱交換器
。[Scope of Claims] 1. A hopper in which sheets of paper are deposited, a suction belt having an opening for sucking and adsorbing the sheets of paper in the hopper, and a negative pressure chamber around which the suction belt is wrapped; A paper feed consisting of an air filling chamber provided with an air outlet that blows out air to separate the sheets accumulated in the hopper, and a blowing blower that blows air into the air filling chamber to increase the pressure. A paper feeding device characterized in that a heat exchanger is provided between the air filling chamber and the blowing blower to cool the air sent from the blowing blower to the air filling chamber. 2. A hopper in which the sheets are deposited, a suction belt having an opening for sucking and adsorbing the sheets in the hopper, and a negative pressure chamber around which the suction belt is passed, and a vacuum chamber in which the sheets are accumulated in the hopper. In a paper feeding device comprising an air filling chamber provided with an air outlet for blowing out air to separate sheets of paper, and a blower blower blowing air into the air filling chamber to increase pressure, the air filling device A heat exchanger is provided between the air chamber and the blower to cool the air from the blower with outside air, and the heat exchanger reduces the temperature of the air sent to the air chamber. A paper feeding device characterized by: 3. An air filling chamber provided with an air outlet that blows out air to dislodge the sheets accumulated in the hopper of the paper feeder, and a blower that blows air into the air filling chamber to increase the pressure. An intercooler is provided between the blower and the air chamber, and the intercooler lowers the temperature of the air sent from the blower to the air chamber, thereby increasing the temperature of the air flow for sheet handling from the air outlet. How to adjust the temperature of the airflow of the paper feeder. 4. An air chamber equipped with an air outlet that blows out air to dislodge the sheets accumulated in the hopper of the paper feeder, and a blower that blows air into the air chamber to increase the pressure. and is provided between the blower and the air chamber to reduce the temperature of the air sent from the blower to the air filling chamber, thereby adjusting the temperature rise of the air flow for sheet handling from the air outlet. Heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31104189A JPH03172245A (en) | 1989-11-30 | 1989-11-30 | Paper feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31104189A JPH03172245A (en) | 1989-11-30 | 1989-11-30 | Paper feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03172245A true JPH03172245A (en) | 1991-07-25 |
Family
ID=18012407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31104189A Pending JPH03172245A (en) | 1989-11-30 | 1989-11-30 | Paper feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03172245A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5060978A (en) * | 1973-10-04 | 1975-05-26 | ||
| JPH01187137A (en) * | 1988-01-22 | 1989-07-26 | Hitachi Ltd | Paper feeder |
-
1989
- 1989-11-30 JP JP31104189A patent/JPH03172245A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5060978A (en) * | 1973-10-04 | 1975-05-26 | ||
| JPH01187137A (en) * | 1988-01-22 | 1989-07-26 | Hitachi Ltd | Paper feeder |
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