JPH05338838A - Belt conveyor - Google Patents
Belt conveyorInfo
- Publication number
- JPH05338838A JPH05338838A JP15087292A JP15087292A JPH05338838A JP H05338838 A JPH05338838 A JP H05338838A JP 15087292 A JP15087292 A JP 15087292A JP 15087292 A JP15087292 A JP 15087292A JP H05338838 A JPH05338838 A JP H05338838A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- roller
- belt conveyor
- electrodes
- electrode
- 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.)
- Withdrawn
Links
Landscapes
- Non-Mechanical Conveyors (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、印刷機や複写機等にお
いて用紙の移送に使用されるベルトコンベアに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor used for transferring paper in a printing machine, a copying machine or the like.
【０００２】[0002]
【従来の技術】従来より、印刷機の排紙部や複写機内の
一つのロールから他のロールへの移載部における紙シー
ト等の移送用ベルトコンベアとして、静電的吸引力を利
用したものが多用されている。図４はこの種従来のベル
トコンベアの一例を示す断面図である。図示のように、
従来のベルトコンベアは、誘電材で構成されたベルト
（吸着層）１と、該ベルト１の下面に摺接するよう例え
ば櫛形パターンで配置された電極２と、この電極２の下
方に配置された一対の金属製ローラ３と、該ローラ３を
介して電極２に電圧を印加する直流電源４を備えてお
り、また、電極２の下面には絶縁保護層５を設けた構成
とされている。以上の構成からなるベルトコンベアで
は、直流電源４から電極２に電圧が印加されることによ
り、静電的吸引力によってベルト１上に載置された紙シ
ート等の被吸着物が吸着保持され、所定位置に移送され
る。2. Description of the Related Art Conventionally, a belt conveyor for transferring a paper sheet or the like in a paper discharge section of a printing machine or a transfer section from one roll to another in a copying machine, which uses electrostatic attraction. Is often used. FIG. 4 is a sectional view showing an example of a conventional belt conveyor of this type. As shown,
A conventional belt conveyor includes a belt (adsorption layer) 1 made of a dielectric material, an electrode 2 arranged in a comb-like pattern so as to be in sliding contact with the lower surface of the belt 1, and a pair arranged below the electrode 2. The metal roller 3 and a DC power source 4 for applying a voltage to the electrode 2 via the roller 3 are provided, and an insulating protection layer 5 is provided on the lower surface of the electrode 2. In the belt conveyor configured as described above, when a voltage is applied from the DC power supply 4 to the electrode 2, an attracted object such as a paper sheet placed on the belt 1 is attracted and held by the electrostatic attraction force, It is transferred to a predetermined position.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の静電吸着利用のベルトコンベアでは、電極とベルト
とを摺接させる構造をとっているために、特にベルトを
高速回転で使用する場合に、摺接部の密着不良や、該摺
接部の消耗による層間剥離等に起因して被搬送物に移送
トラブルが発生するという問題があった。However, in the above-mentioned conventional belt conveyor using electrostatic attraction, since the structure is such that the electrode and the belt are brought into sliding contact with each other, especially when the belt is used at high speed rotation, There has been a problem that a transfer trouble occurs on the object to be conveyed due to poor adhesion of the sliding contact portion or delamination due to wear of the sliding contact portion.
【０００４】本発明は上記問題点に鑑みてなされたもの
であって、静電吸着利用のベルトコンベアにおいて、移
送トラブル等の発生を確実に防止することができるよう
にすることを目的とする。The present invention has been made in view of the above problems, and it is an object of the present invention to reliably prevent a transfer trouble or the like from occurring in a belt conveyor utilizing electrostatic attraction.
【０００５】[0005]
【課題を解決するための手段】本発明は、一対のローラ
に無端状のベルトを懸回してなるベルトコンベアに係る
ものであって、ベルトを誘電材により構成するととも
に、一対のローラのうち少なくとも移送方向上流側のロ
ーラを電極としたことを特徴とする。上記構成におい
て、電極は絶縁部を挟んで正極性の電極と負極性の電極
とを交互に配置して構成するのが好適である。The present invention relates to a belt conveyor in which an endless belt is suspended around a pair of rollers. The belt is made of a dielectric material, and at least one of the pair of rollers is used. The roller on the upstream side in the transfer direction is used as an electrode. In the above structure, it is preferable that the electrodes are configured by alternately arranging positive electrodes and negative electrodes with the insulating portion sandwiched therebetween.
【０００６】また、移送方向上流側のローラに対向して
ベルトとの間で被搬送物を挟持する他のローラを設け、
これら対向する二つのローラを互いに異極性の電極とす
ることもできる。Further, another roller for sandwiching the object to be conveyed between the belt and the roller on the upstream side in the transfer direction is provided,
These two rollers facing each other may be electrodes having polarities different from each other.
【０００７】[0007]
【作用】ベルトコンベア上に被搬送物を載置すると、電
極とされた上流側のローラに接触するベルトに静電吸着
力が発生し、また、ローラから離れたベルト部分におい
ても残留吸着状態となるため、被搬送物はベルトの表面
に吸着したまま下流側へ搬送される。When the object to be conveyed is placed on the belt conveyor, an electrostatic attraction force is generated on the belt which is in contact with the roller on the upstream side, which is an electrode, and the belt portion away from the roller also has a residual attraction state. Therefore, the transported object is transported to the downstream side while being adsorbed on the surface of the belt.
【０００８】[0008]
【実施例】以下、実施例を図面に基づいて説明する。図
１は本発明の一実施例に係るベルトコンベアを紙シート
の移送状態で示す斜視図、図２は同実施例に係るベルト
コンベアにおけるローラ部の斜視図、図３は同ローラ部
の部分断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings. FIG. 1 is a perspective view showing a belt conveyor according to an embodiment of the present invention in a paper sheet transfer state, FIG. 2 is a perspective view of a roller portion of the belt conveyor according to the embodiment, and FIG. 3 is a partial cross section of the roller portion. It is a figure.
【０００９】この実施例において、ベルトコンベア６
は、所定間隔を隔てて互いに平行配置された移送方向上
流側の駆動ローラ７および同下流側の従動ローラ８と、
これらの各ローラ７，８に懸回された無端状のベルト９
を備えている。上記駆動ローラ７は、軸方向に沿って導
電部（電極）１０と体積抵抗率１０15Ωｃｍの絶縁部１
１とが交互に並ぶような構造とされている。そして、各
導電部１０には、同一極同士が連結されるようそれぞれ
導線１２ａ，１２ｂが接続され、これら各導線１２ａ，
１２ｂは可変昇圧器１３に連結されている。このように
構成することで、各導電部１０は、図３に示すように交
互に正極性および負極性に帯電される。ここで、各導線
１２ａ，１２ｂと導電部１０との間にはブラシ（図示せ
ず）が介在されている。また、導電部１０は耐摩耗性を
有する金属で形成することが望ましいが、樹脂で成形し
た後表面にクロームメッキもしくは胴メッキを施すよう
にすることも可能である。In this embodiment, the belt conveyor 6
Is a drive roller 7 on the upstream side in the transfer direction and a driven roller 8 on the downstream side, which are arranged in parallel with each other with a predetermined interval,
An endless belt 9 suspended on each of these rollers 7, 8.
Is equipped with. The drive roller 7 includes a conductive portion (electrode) 10 and an insulating portion 1 having a volume resistivity of 10 15 Ωcm along the axial direction.
1 and 1 are alternately arranged. Then, the conductors 12a and 12b are connected to the respective conductive portions 10 so that the same poles are connected to each other.
12b is connected to the variable booster 13. With such a configuration, the conductive portions 10 are alternately charged with positive polarity and negative polarity as shown in FIG. Here, a brush (not shown) is interposed between each conductive wire 12a, 12b and the conductive portion 10. Further, the conductive portion 10 is preferably formed of a metal having wear resistance, but it is also possible to form the surface of the conductive portion 10 by chrome plating or barrel plating after molding with resin.
【００１０】また、上記ベルト９は、体積抵抗率が１０
11〜１０14Ωｃｍの誘電材であって、物理的疲労や金属
との摩擦，摩耗特性に優れた材質で構成されている。具
体的には、ポリオキシメチレン（ＰＯＭ）やポリブチレ
ンテレフタレート（ＰＢＴ），ポリエステル系エラスト
マーに導電性物質を分散させてなる素材をシート化し、
これを熱融着，超音波溶着等によりベルト加工したもの
や、上記素材をインフレーションにより筒状に成形し輪
切りにしたものなどが好適である。The belt 9 has a volume resistivity of 10
It is a dielectric material of 11 to 10 14 Ωcm, and is composed of a material having excellent physical fatigue, friction with metal, and wear characteristics. Specifically, polyoxymethylene (POM), polybutylene terephthalate (PBT), a polyester-based elastomer in which a conductive material is dispersed is formed into a sheet,
It is preferable to use a belt processed by heat fusion, ultrasonic welding, or the like, or a material obtained by forming the above material into a tubular shape by inflation and cutting it into a ring.
【００１１】上記構成のベルトコンベア６は、可変昇圧
器１３によって各導電部１０に１０００〜２０００Ｖの
直流電圧を印加した状態で、駆動ローラ７が毎時２４０
０回転で回転駆動される。このベルトコンベア６に被搬
送物（被吸着物）である紙シート１４を載置すると、駆
動ローラ７の各導電部１０に接触するベルト９に静電吸
着力が発生し、紙シート１４がベルト９の表面に吸着さ
れる。そして、この紙シート１４は、ベルト９が導電部
１０から離れた後においても、残留吸着によりベルト９
上に吸着されたまま従動ローラ８側へ移送され、従動ロ
ーラ８の前方に近接配置された平板構成のセパレータ１
５によってベルト９上面から分離されることとなる。In the belt conveyer 6 having the above-mentioned structure, the drive roller 7 is driven by the variable pressure booster 13 to the conductive portions 10 at a voltage of 1000 to 2000 V per hour.
It is driven to rotate at 0 rotations. When the paper sheet 14 which is the object to be conveyed (object to be adsorbed) is placed on the belt conveyor 6, an electrostatic adsorption force is generated on the belt 9 contacting each conductive portion 10 of the drive roller 7, and the paper sheet 14 becomes a belt. 9 is adsorbed on the surface. The paper sheet 14 is retained by the belt 9 even after the belt 9 is separated from the conductive portion 10.
The separator 1 having a flat plate configuration is transferred to the driven roller 8 side while being adsorbed on the upper side, and is arranged in front of the driven roller 8 in proximity.
5 separates from the upper surface of the belt 9.
【００１２】ここで、ベルトコンベア６による吸着力の
強弱は、当該ベルトコンベア６の回転数やベルト９の長
さおよび温度，湿度等の環境条件によって異なるため、
電源の電圧を変更したり、ベルト９の厚さを調整した
り、あるいは、ベルト材として体積抵抗率の異なる材料
を選定する等によって所要の吸着力のベルトコンベアを
得るようにするのが望ましい。Since the strength of the suction force of the belt conveyor 6 depends on the number of rotations of the belt conveyor 6, the length of the belt 9 and environmental conditions such as temperature and humidity,
It is desirable to obtain a belt conveyor having a required suction force by changing the voltage of the power source, adjusting the thickness of the belt 9, or selecting a material having a different volume resistivity as the belt material.
【００１３】なお、上記実施例においては、移送方向上
流側のローラのみを電極としたものを説明したが、下流
側のローラをも電極として吸着力をコントロールするよ
うにした実施例も可能である。その場合、下流側の電極
をベルトに帯電された極性と逆極性に構成することがで
き、こうすることで、ベルトが下流側のローラ位置に来
たときにベルト自体の極性を強制的に除電して、ベルト
がエレクトリック状態となるのを防ぐことができ、ま
た、ベルト表面からの被搬送物の分離をよりスムーズに
行うことができる。また、これとは反対に、下流側の電
極をベルトに帯電された極性と同極性とし、それによっ
て被搬送物への吸着力の持続時間を必要に応じて長くす
ることも可能である。In the above embodiment, only the roller on the upstream side in the transfer direction was used as an electrode, but an embodiment in which the suction force is controlled by using the roller on the downstream side as an electrode is also possible. .. In that case, the electrode on the downstream side can be configured to have a polarity opposite to the polarity charged on the belt, and by doing so, the polarity of the belt itself is forcibly removed when the belt reaches the roller position on the downstream side. As a result, the belt can be prevented from becoming an electric state, and the transported object can be separated from the belt surface more smoothly. On the contrary, it is also possible to make the downstream side electrode the same polarity as that charged on the belt, thereby lengthening the duration of the attraction force to the conveyed object as necessary.
【００１４】また、上記実施例では、移送方向上流側の
ローラを正極性および負極性の電極と絶縁部とが交互に
並ぶよう配置したものについて説明したが、該ローラに
対向して該ローラの上方にベルトとの間で被搬送物を挟
持する他のローラを設け、これら対向する二つのローラ
を互いに異極性の電極とするような実施例も可能であ
る。このような構成によっても上記実施例と同様の作用
効果を得ることができる。In the above embodiment, the roller on the upstream side in the transfer direction is arranged so that the positive and negative electrodes and the insulating portion are alternately arranged. However, the roller on the upstream side of the roller faces the roller. An embodiment is also possible in which another roller for sandwiching the conveyed object is provided above the belt, and these two opposing rollers are electrodes of opposite polarities. Even with such a configuration, it is possible to obtain the same operational effects as those of the above embodiment.
【００１５】また、上記実施例において、導電部と絶縁
部を有する駆動ローラは、樹脂成形にて一体成形で構成
することも可能であり、また、同一極同士の連結は導線
で行う代わりにスルーホール回路等によって行うように
してもよい。また、上記実施例では、被搬送物の分離の
ためのセパレータを平板で構成したものを説明したが、
このセパレータの構成は、その他、従動ローラを共通ロ
ーラにして該ローラに別のベルトを懸回させるようにす
るなど、いろいろな形で実施することができる。Further, in the above embodiment, the drive roller having the conductive portion and the insulating portion may be integrally formed by resin molding, and the same poles may be connected to each other by a conductive wire instead of a through wire. It may be performed by a hall circuit or the like. In addition, in the above-mentioned embodiment, the separator for separating the transported object is constituted by the flat plate,
The separator may be configured in various forms such as using the driven roller as a common roller and suspending another belt around the roller.
【００１６】[0016]
【発明の効果】本発明は以上のように構成されているの
で、静電吸着利用のベルトコンベアにおいて、高速回転
時の電極部とベルトとの密着不良等に起因する移送トラ
ブル等の発生を確実に防止することができる。EFFECTS OF THE INVENTION Since the present invention is constructed as described above, in a belt conveyor utilizing electrostatic attraction, occurrence of transfer troubles due to poor adhesion between the electrode portion and the belt during high speed rotation is ensured. Can be prevented.
【図１】本発明の一実施例に係るベルトコンベアを紙シ
ートの移送状態で示す斜視図FIG. 1 is a perspective view showing a belt conveyor according to an embodiment of the present invention in a state where a paper sheet is transferred.
【図２】本発明の一実施例に係るベルトコンベアにおけ
るローラ部の斜視図FIG. 2 is a perspective view of a roller portion in a belt conveyor according to an embodiment of the present invention.
【図３】本発明の一実施例に係るベルトコンベアにおけ
るローラ部の部分断面図FIG. 3 is a partial cross-sectional view of a roller portion of a belt conveyor according to an embodiment of the present invention.
【図４】従来のベルトコンベアの一例を示す断面図FIG. 4 is a sectional view showing an example of a conventional belt conveyor.
６ ベルトコンベア ７ 駆動ローラ ８ 従動ローラ ９ ベルト １０ 導電部（電極） １１ 絶縁部 6 Belt Conveyor 7 Drive Roller 8 Driven Roller 9 Belt 10 Conductive Part (Electrode) 11 Insulating Part
Claims (3)
てなるベルトコンベアにおいて、前記ベルトを誘電材に
より構成するとともに、前記一対のローラのうち少なく
とも移送方向上流側のローラを電極としたことを特徴と
するベルトコンベア。1. A belt conveyor in which an endless belt is suspended around a pair of rollers, wherein the belt is made of a dielectric material, and at least the roller on the upstream side in the transfer direction of the pair of rollers is an electrode. Belt conveyor characterized by.
負極性の電極とを交互に配置して構成された請求項１記
載のベルトコンベア。2. The belt conveyor according to claim 1, wherein the electrodes are configured by alternately arranging positive electrodes and negative electrodes with the insulating portion sandwiched therebetween.
トとの間で被搬送物を挟持する他のローラが設けられ、
これら対向する二つのローラが互いに異極性の電極とさ
れた請求項１記載のベルトコンベア。3. Another roller is provided to face the roller on the upstream side in the transport direction and to sandwich the transported object between the roller and the belt,
The belt conveyor according to claim 1, wherein the two rollers facing each other are electrodes having polarities different from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15087292A JPH05338838A (en) | 1992-06-10 | 1992-06-10 | Belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15087292A JPH05338838A (en) | 1992-06-10 | 1992-06-10 | Belt conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05338838A true JPH05338838A (en) | 1993-12-21 |
Family
ID=15506226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15087292A Withdrawn JPH05338838A (en) | 1992-06-10 | 1992-06-10 | Belt conveyor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05338838A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11147650A (en) * | 1997-09-04 | 1999-06-02 | Ricoh Co Ltd | Recording paper stacker device |
| KR100694807B1 (en) * | 2005-02-23 | 2007-03-14 | (주)큐엠씨 | Polarizing film inspection method and system |
| KR100742809B1 (en) * | 2005-06-23 | 2007-07-25 | 가부시끼가이샤 도시바 | Paper taking out device |
-
1992
- 1992-06-10 JP JP15087292A patent/JPH05338838A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11147650A (en) * | 1997-09-04 | 1999-06-02 | Ricoh Co Ltd | Recording paper stacker device |
| KR100694807B1 (en) * | 2005-02-23 | 2007-03-14 | (주)큐엠씨 | Polarizing film inspection method and system |
| KR100742809B1 (en) * | 2005-06-23 | 2007-07-25 | 가부시끼가이샤 도시바 | Paper taking out device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990831 |