JPH0235717Y2 - - Google Patents
Info
- Publication number
- JPH0235717Y2 JPH0235717Y2 JP1989056281U JP5628189U JPH0235717Y2 JP H0235717 Y2 JPH0235717 Y2 JP H0235717Y2 JP 1989056281 U JP1989056281 U JP 1989056281U JP 5628189 U JP5628189 U JP 5628189U JP H0235717 Y2 JPH0235717 Y2 JP H0235717Y2
- Authority
- JP
- Japan
- Prior art keywords
- printing paper
- plate cylinder
- belt conveyor
- printing
- peeling
- 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
- 238000007639 printing Methods 0.000 claims description 91
- 238000007599 discharging Methods 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 description 25
- 230000002093 peripheral effect Effects 0.000 description 8
- 238000000926 separation method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、印刷機の排紙装置に係り、特に輪転
式印刷機の版胴より印刷用紙を剥がし且排出する
印刷用紙剥離排出装置に係る。[Detailed description of the invention] [Industrial application field] The present invention relates to a paper ejecting device for a printing press, and particularly to a printing paper peeling and ejecting device that peels and ejects printing paper from the plate cylinder of a rotary printing press. .
輪転式印刷機は、一般に、外周面に孔版原紙の
如き原版を装着された版胴を有し、印刷用紙が版
胴の下方をこれに上面にて接触しつつ版胴の回転
に同期して移送されることにより、その上面に印
刷インキによる印刷画像を施され、かくして印刷
を施されれた印刷用紙は印刷インキの粘着性によ
る印刷ドラムへの粘着から剥がされ且排紙台へ向
けて導かれるようになつている。
A rotary printing press generally has a plate cylinder with an original plate such as stencil paper attached to its outer circumferential surface, and the printing paper is moved downwardly and in contact with the upper surface of the plate cylinder in synchronization with the rotation of the plate cylinder. As the paper is transported, a printed image is applied to its upper surface using printing ink, and the printed printing paper is peeled off from adhesion to the printing drum due to the adhesiveness of the printing ink, and is guided toward the paper output tray. It's starting to get worse.
上記の如く版胴から印刷用紙を剥がす作用は、
従来最も一般的には、版胴に近接して剥離爪の先
端を配置し、この剥離爪の先端を版胴に貼り付い
て版胴と共に移動する印刷用紙にその前縁から始
まつて係合させることにより行われているが、こ
の場合印刷画像が剥離爪との接触によつて損われ
る虞れがある。この点に関し、実開昭56−23947
号公報には、機械的な剥離爪に代えて版胴に近接
して配置された開口端を有する空気ノズルを用
い、これより噴出される空気噴流によつて印刷用
紙を版胴より剥がすことが提案されている。 The action of peeling off the printing paper from the plate cylinder as described above is
Conventionally, most commonly, the tip of a peeling pawl is placed close to the plate cylinder, and the tip of the peeling pawl engages the printing paper that sticks to the plate cylinder and moves with the plate cylinder, starting from its leading edge. However, in this case, there is a risk that the printed image may be damaged by contact with the peeling nail. Regarding this point, Utility Model No. 56-23947
The publication discloses that instead of a mechanical peeling claw, an air nozzle with an open end placed close to the plate cylinder is used, and the printing paper can be peeled from the plate cylinder by an air jet ejected from the air nozzle. Proposed.
また版胴より剥がされた印刷用紙を排紙台へ向
けて送る装置の一つとして、ベルトコンベアを用
いることが従来より行われているが、かかるベル
トコンベアによる印刷用紙の搬送をより確実にす
べく、ベルトコンベアを通気性の構造とし、ベル
トコンベアの下方より空気を吸引してベルトコン
ベア上に載せられた印刷用紙をベルトコンベアに
対し積極的に吸着させることが、上記の実開昭56
−23947号公報及び特開昭50−88769号公報等に於
て提案されている。 In addition, a belt conveyor has traditionally been used as a device for transporting the printing paper peeled off from the plate cylinder toward the paper output tray, but it is possible to ensure that the printing paper is conveyed more reliably by such a belt conveyor. In order to achieve this, the belt conveyor has a breathable structure, and the printing paper placed on the belt conveyor is actively attracted to the belt conveyor by sucking air from below the belt conveyor.
This method has been proposed in Japanese Patent Application Laid-Open No. 50-88769, etc.
更にまた、印刷機より排出された印刷用紙は通
常排紙台の如き適当な印刷用紙受け装置内へ投入
されるが、その際薄くて剛性の乏しい印刷用紙に
剛性を与えるべく、印刷用紙の送り通路の終端部
に於ける両側縁部を***させ、そこを通過する際
に印刷用紙を前方より見てＵ字状に湾曲させるこ
とが、特公昭44−6431号公報に於て提案されてい
る。 Furthermore, the printing paper discharged from the printing machine is normally fed into a suitable printing paper receiving device such as a paper output table, but at this time, in order to give rigidity to the printing paper which is thin and lacks rigidity, the printing paper is fed. It has been proposed in Japanese Patent Publication No. 6431/1987 to raise the edges on both sides at the end of the path so that the printing paper curves into a U-shape when viewed from the front as it passes through the edges. .
版胴より印刷用紙を剥す作用を、上記の実開昭
56−23947号公報に於て提案されている如く空気
ノズルにより行うことにより、印刷物が機械的剥
離爪により剥がされる際に生ずる虞れのある印刷
画像の損傷は回避されるが、かかる空気ノズルを
用いまたそれに必要な送風源及び送風ダクトを設
けることは、それだけ装置を複雑化し、コストの
上昇を招く。
The effect of peeling the printing paper from the plate cylinder was developed by the above-mentioned Jitsukasho.
By using an air nozzle as proposed in Publication No. 56-23947, the damage to the printed image that can occur when the printed material is peeled off by a mechanical peeling claw is avoided, but the use of such an air nozzle The use and provision of the necessary air blowing sources and air ducts complicates the apparatus and increases costs.
この点に関し、簡単な機械的剥離爪によつて版
胴より印刷用紙を剥がすことについてみると、剥
離爪との接触によつて印刷画像が損傷される虞れ
のあるのは、印刷用紙の内の実際に印刷画像が施
されている部分に剥離爪の先端が接する場合であ
り、通常印刷用紙はその周縁部が印刷画像を施さ
れない余白として残されているので、剥離爪が印
刷用紙の前縁部に於てのみこれに係合するように
なつていれば、機械的剥離爪によつて印刷用紙を
剥がす時にも、印刷画像が損傷される問題を回避
することができる。 In this regard, when peeling the printing paper from the plate cylinder with a simple mechanical stripping claw, it is important to note that the printed image may be damaged by contact with the stripping claw. This is the case when the tip of the peeling claw touches the part where the printed image is actually applied, and since the peripheral edge of printing paper is usually left as a margin where no printed image is applied, the peeling claw touches the front part of the printing paper. If it is engaged only at the edges, it is possible to avoid the problem of damage to the printed image even when the printing paper is peeled off by the mechanical peeling claw.
更にまた、上記の実開昭56−23947号公報や特
開昭50−88769号公報に於て提案されている如く、
通気性のベルトコンベアを用い、その下方より空
気を吸引する印刷用紙排出装置の構造に於て、上
記の各公報に於て提案されている如く空気の吸込
口が通気性ベルトコンベアの始端部から終端部へ
至るその延在領域の全体に亙つて開口するよう設
けられている時には、印刷用紙が丁度その搬送の
中間過程にあつてベルトコンベアの始端部から終
端部へ至る全域に亙つて延在する状態にあるとき
には、これに対し強い吸引力が及ぼされるが、先
行する印刷用紙がなく、始めての印刷用紙の前縁
部のみがベルトコンベアの始端部にさしかかつた
ような状態にあるときには、空気吸入口へ吸入さ
れる空気はベルトコンベアの未だ印刷用紙にて覆
われていない空気抵抗の低い部分をより多く通つ
て流れるので、かかる状態に於ける印刷用紙の前
縁部には殆ど有効な吸引作用は及ぼされないもの
と推測される。 Furthermore, as proposed in the above-mentioned Utility Model Application Publication No. 56-23947 and Japanese Patent Application Publication No. 50-88769,
In the structure of a printing paper discharge device that uses a breathable belt conveyor and sucks air from below, the air suction port is located from the starting end of the breathable belt conveyor, as proposed in each of the above-mentioned publications. When the belt conveyor is provided so as to be open over its entire extending region to the terminal end, the printing paper extends over the entire area from the starting end to the terminal end of the belt conveyor just in the middle of its conveyance. However, when there is no preceding printing paper and only the leading edge of the first printing paper is approaching the starting end of the belt conveyor, a strong suction force is applied to it. , since the air sucked into the air intake port flows through more of the low air resistance parts of the belt conveyor that are not yet covered with the printing paper, it is mostly effective for the leading edge of the printing paper in such a state. It is assumed that no suction effect is exerted.
本考案は、版胴より印刷用紙を剥がし且排出す
る作業を行うことに関する上記の如き従来の技術
に於ける問題に鑑み、版胴より印刷用紙を剥がす
作用を簡単な機械的剥離爪により行うが、かかる
機械的剥離爪と印刷用紙の間の接触は印刷用紙の
前縁部に於てのみ行われるようにし、一旦かかる
機械的剥離爪により印刷用紙の前縁部が版胴より
剥がされたときには、この剥がされた前縁部を空
気吸引式のベルトコンベアの始端部により確実に
捕え、その後は印刷用紙が剥離爪の先端に接する
より先にベルトコンベアにより版胴から剥がされ
るようにすることによつて、版胴から印刷用紙を
剥がす作業とこの剥がされた印刷用紙を排紙台へ
向けて搬送する作用をより好ましい態様にて確実
に達成することのできる輪転式印刷機のための印
刷用紙剥離排出装置を提供することを課題として
いる。 In view of the above-mentioned problems in the conventional technology regarding peeling off and ejecting the printing paper from the plate cylinder, the present invention uses a simple mechanical peeling claw to perform the action of peeling the printing paper from the plate cylinder. , the contact between the mechanical peeling pawl and the printing paper is made only at the leading edge of the printing paper, and once the leading edge of the printing paper is peeled off from the plate cylinder by the mechanical peeling pawl. This peeled leading edge is securely captured by the starting end of an air-suction belt conveyor, and then the belt conveyor peels off the printing paper from the plate cylinder before it touches the tip of the peeling claw. Therefore, there is a printing paper for a rotary printing press that can reliably perform the operations of peeling off the printing paper from the plate cylinder and conveying the peeled printing paper toward the paper output table in a more preferable manner. The object of the present invention is to provide a peeling and discharging device.
かかる課題は、本考案によれば、輪転式の版胴
より印刷用紙を剥がし且排出する印刷用紙剥離排
出装置にして、版胴に近接して配置された先端を
有し版胴に貼り付いて版胴と共に移動する印刷用
紙の前縁に係合して版胴の回転に伴つて版胴より
印刷用紙を剥がす剥離爪と、前記剥離爪の先端の
下方に位置する始端より排紙方向へ終端まで延在
し版胴の周速より速い速度にて駆動される通気性
のベルトコンベアと、前記ベルトコンベアの終端
の近傍の両側縁部に於て該ベルトコンベアの上面
より上方に次第に***した印刷用紙案内面を与え
る***部材と、主として前記ベルトコンベアの始
端の近傍と終端の近傍に於て該ベルトコンベアの
下方に開口する吸込口から空気を吸引する空気吸
引装置とを有することを特徴とする印刷用紙剥離
排出装置によつて達成される。
This problem has been solved according to the present invention by using a printing paper peeling and discharging device that peels off and discharges printing paper from a rotary plate cylinder, and which has a tip disposed close to the plate cylinder and does not stick to the plate cylinder. a peeling claw that engages with the leading edge of the printing paper that moves with the plate cylinder and peels the printing paper from the plate cylinder as the plate cylinder rotates; and a terminal end that extends in the paper ejection direction from a starting end located below the tip of the peeling claw. an air-permeable belt conveyor that extends up to 300 degrees and is driven at a speed faster than the circumferential speed of the plate cylinder, and a print that is gradually raised upward from the top surface of the belt conveyor at both side edges near the end of the belt conveyor. It is characterized by having a raised member that provides a paper guide surface, and an air suction device that sucks air from a suction port that opens below the belt conveyor mainly near the starting end and near the ending end of the belt conveyor. This is achieved by a printed paper peel and eject device.
上記の如く通気性ベルトコンベアの下方に開口
する空気吸込口を主としてベルトコンベアの始端
の近傍と終端の近傍とに開口せしめることによ
り、先行する印刷用紙の有る無しに拘らず版胴よ
り新しく剥がされてくる印刷用紙の前縁部をベル
トコンベアの始端部に於て空気の吸引により確実
に捕えることができる。
As described above, by opening the air suction ports below the breathable belt conveyor mainly near the start end and near the end of the belt conveyor, new printing paper can be peeled off from the plate cylinder regardless of the presence or absence of preceding printing paper. The leading edge of the incoming printing paper can be reliably captured by air suction at the starting end of the belt conveyor.
こうして印刷用紙の前縁部がベルトコンベアの
始端部に於てこれに確実に捕えられると、ベルト
コンベアが版胴の周速より速い速度にて駆動され
ていることにより、その後印刷用紙は剥離爪の先
端より離れるので、前縁部を除く印刷用紙の主要
部は剥離爪には接触しなくなり、その主要部に施
された印刷画像が剥離爪との接触により損われる
問題は確実に回避される。 In this way, when the leading edge of the printing paper is securely captured by the belt conveyor at its starting end, the printing paper is then caught by the peeling claw because the belt conveyor is driven at a speed faster than the circumferential speed of the plate cylinder. Since the main part of the printing paper except the leading edge does not come into contact with the peeling claw, the problem of the printed image on the main part being damaged due to contact with the peeling claw is reliably avoided. .
ベルトコンベアによる印刷用紙の搬送が進行
し、印刷用紙がベルトコンベアの終端部に近付く
と、印刷用紙は今度はベルトコンベアの終端部の
下方に開口する吸込口からの空気の吸引によつて
再びベルトコンベア上に確実に捉えられ、こうし
てベルトコンベアに対し吸付けられた状態にてそ
の両側縁部が***部材によつて上方へ持上げられ
るので、印刷用紙は確実にその前方から見てＵ字
形に湾曲される。こうしてＵ字形に湾曲され、そ
の剛性を増大された状態にて、印刷用紙はベルト
コンベアの終端よりその後に配置された適当な排
紙台へ向けて投入されてよく、これによつて印刷
用紙は不規則な形状に変形したり重なりに乱れを
生ずることなく排紙台内の所定の位置へ向けて確
実に載置される。 As the conveyance of the printing paper by the belt conveyor progresses and the printing paper approaches the end of the belt conveyor, the printing paper is moved back to the belt by suction of air from the suction port opened below the end of the belt conveyor. The printing paper is securely caught on the conveyor, and while being attracted to the belt conveyor, its both side edges are lifted upward by the raised members, ensuring that the printing paper is curved into a U-shape when viewed from the front. be done. Curved into a U-shape and having increased rigidity, the printing paper may be fed from the end of the belt conveyor to a suitable paper output tray disposed after the end of the belt conveyor, whereby the printing paper is The paper is reliably placed at a predetermined position within the paper ejection table without deforming into an irregular shape or causing disturbance in overlapping.
以下に添付の図を参照して本考案を実施例につ
いて詳細に説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.
第１図乃至第３図は本考案による印刷用紙剥離
排出装置の一つの実施例を示している。図に於
て、１は印刷機の円筒状版胴を示しており、該円
筒状版胴は印刷インキの通過を許す多孔性構造に
なつており、外周面に孔版原紙２を貼付け装着さ
れ、自身の中心軸線の周りに図には示されていな
い駆動装置により第１図で見て反時計廻り方向に
回転駆動されるようになつている。円筒状版胴１
の下方にはプレスローラ３が設けられている。プ
レスローラ３は支持軸４によつて自身の中心軸線
の周りに回転可能に支持されており、図には示さ
れていないばね装置によつて円筒状版胴１の外周
面へ向けて選択的に押付けられ、円筒状版胴１と
の間に供給された印刷用紙Ｐを円筒状版胴１の外
周面へ向けて押付けるようになつている。 1 to 3 show one embodiment of a printing paper peeling and discharging device according to the present invention. In the figure, reference numeral 1 indicates a cylindrical plate cylinder of a printing press, and the cylindrical plate cylinder has a porous structure that allows printing ink to pass through, and a stencil paper 2 is attached to the outer peripheral surface of the cylinder. It is designed to be rotated around its own central axis in a counterclockwise direction as viewed in FIG. 1 by a drive device (not shown). Cylindrical plate cylinder 1
A press roller 3 is provided below. The press roller 3 is rotatably supported around its own central axis by a support shaft 4, and is selectively moved toward the outer peripheral surface of the cylindrical plate cylinder 1 by a spring device (not shown). , and presses the printing paper P supplied between the plate cylinder 1 and the cylindrical plate cylinder 1 toward the outer circumferential surface of the cylinder 1.
円筒状版胴１の外周面に近接した位置には分離
爪５が支持軸６より支持されて設けられている。
分離爪５は尖つた先端部５ａにて円筒状版胴１の
外周面に極く接近し、円筒状版胴１の外周面に印
刷インキによつて貼付いた印刷用紙Ｐの前縁を引
掛けて該印刷用紙Ｐを円筒状版胴１の回転に伴な
い該円筒状版胴より引き剥すようになつている。 A separation claw 5 is provided at a position close to the outer peripheral surface of the cylindrical plate cylinder 1 and supported by a support shaft 6.
The separation claw 5 comes very close to the outer circumferential surface of the cylindrical plate cylinder 1 with its sharp tip 5a, and hooks the leading edge of the printing paper P stuck to the outer circumferential surface of the cylindrical plate cylinder 1 with printing ink. The printing paper P is peeled off from the cylindrical plate cylinder 1 as the cylindrical plate cylinder 1 rotates.
１０は本考案による印刷用紙剥離排出装置のベ
ルトコンベア部を示している。このベルトコンベ
ア部１０は吸引ボツクス１１を有している。吸引
ボツクス１１は平らな上板１２を有しており、該
上板は円筒状版胴１とプレスローラ３との対向部
の近傍の位置からこれより遠ざかる方向に下方へ
傾斜して延在している。 Reference numeral 10 indicates a belt conveyor section of the printing paper peeling and discharging device according to the present invention. This belt conveyor section 10 has a suction box 11. The suction box 11 has a flat upper plate 12, which extends from a position near the facing portion of the cylindrical plate cylinder 1 and the press roller 3 downwardly in a direction away from this. ing.
吸引ボツクス１１の円筒状版胴１に近接した端
部には三個のプーリ１５が軸線方向に互いに隔置
されてプーリ軸１６上に取付けられており、また
これとは反対側の端部には三つのプーリ１７が軸
線方向に互いに隔置されてプーリ軸１８上に取付
けられている。プーリ１５と１７には各々その一
対のプーリについて三本のひも状の無端ベルト１
９がプーリ軸１６及び１８の軸線方向に互いに隔
置され且各々所定の張力を与えられた状態にて掛
渡されている。無端ベルト１９はゴム或いはゴム
類似品の如く比較的高い摩擦係数を有する材料に
より構成され、その上側スパンは上板１２の上面
に近接して該上面に沿つて延在しており、下側ス
パンは吸引ボツクス１１を貫通して設けられたト
ンネル部１３を通過して延在しており、かくして
円筒状版胴１の下方に位置する始端より他方の終
端まで延在する通気性のベルトコンベアが構成さ
れている。プーリ軸１６の一端部には駆動プーリ
２０が取付けられており、該駆動プーリは駆動用
無端ベルト２１によつて図には示されていない電
動機に駆動連結され、第１図で見て時計廻り方向
に回転駆動され、無端ベルト１９を円筒状版胴１
の周速度より速い速度にて駆動するようになつて
いる。 At the end of the suction box 11 close to the cylindrical plate cylinder 1, three pulleys 15 are mounted on a pulley shaft 16, spaced apart from each other in the axial direction, and at the opposite end Three pulleys 17 are mounted on a pulley shaft 18, spaced apart from each other in the axial direction. The pulleys 15 and 17 each have three string-like endless belts 1 for each pair of pulleys.
9 are spaced apart from each other in the axial direction of the pulley shafts 16 and 18, and each is stretched around the pulley shafts 16 and 18 with a predetermined tension applied thereto. The endless belt 19 is constructed of a material having a relatively high coefficient of friction, such as rubber or a rubber-like product, and has an upper span extending close to and along the upper surface of the upper plate 12, and a lower span extending along the upper surface of the upper plate 12. The conveyor belt extends through a tunnel section 13 provided through the suction box 11, and thus a ventilated belt conveyor extends from its starting end located below the cylindrical plate cylinder 1 to its other end. It is configured. A driving pulley 20 is attached to one end of the pulley shaft 16, and the driving pulley is drivingly connected to an electric motor (not shown) by an endless driving belt 21, and rotates clockwise in FIG. The endless belt 19 is rotated in the direction of the cylindrical plate cylinder 1.
It is designed to be driven at a speed faster than the circumferential speed of.
上板１２のプーリ１５に近接した端部には三組
の無端ベルト１９の各々の上側スパンに対応する
位置に三個の空気吸入口２２が形成されており、
各組の無端ベルト１９は各々上側スパンの始端部
にて空気吸入口２２上を走行するようになつてい
る。 Three air inlets 22 are formed at the end of the upper plate 12 near the pulley 15 at positions corresponding to the upper spans of each of the three sets of endless belts 19.
Each set of endless belts 19 is configured to run over the air intake port 22 at the starting end of the upper span.
吸引ボツクス１１は底板１４に設けられた連通
孔２３によつて吸引ボツクス１１の下底部に取付
けられたフアンハウジング２４のフアン室２５に
連通している。フアン室２５には電動機２６によ
つて回転駆動される遠心フアン２７が取付けられ
ており、該遠心フアンは、連通孔２３より空気を
吸引し、該空気をフアンハウジング２４の底部に
設けられた排気孔２８よりロアケース２９内の排
気室３０に吐出するようになつている。ロアケー
ス２９の下底部には空気排出口３１が設けられて
おり、又該下底部にはフイルタ３２が取付けられ
ている。 The suction box 11 communicates with a fan chamber 25 of a fan housing 24 attached to the lower bottom of the suction box 11 through a communication hole 23 provided in the bottom plate 14. A centrifugal fan 27 that is rotatably driven by an electric motor 26 is attached to the fan chamber 25 . The air is discharged from the hole 28 into an exhaust chamber 30 inside the lower case 29. An air outlet 31 is provided at the bottom of the lower case 29, and a filter 32 is attached to the bottom.
上板１２のプーリ１７に近接した終端部には、
三組の無端ベルト１９のうちの両側縁部に位置す
る組の無端ベルト１９に対応する位置に各々***
部材３３が取付けられている。***部材３３は前
記両側縁部に位置する組の無端ベルト１９の上方
部をその走行を阻止しない態様にて覆い、上板１
２の中央部側より外側縁部へ向かうに従い上板１
２の上面に対し上方に傾斜し無端ベルト１９の上
側スパンの移動方向に向けて上板１２の上面に対
し上方に傾斜した上部案内面３４を有しており、
上板１２の上面と共働して排紙方向に沿う両側端
部が中央部に比して高くなつている谷形の用紙受
け面を構成している。 At the end of the upper plate 12 close to the pulley 17,
A raised member 33 is attached to each of the three sets of endless belts 19 at positions corresponding to the sets of endless belts 19 located on both side edges. The raised member 33 covers the upper part of the set of endless belts 19 located on both side edges in a manner that does not prevent the running of the endless belt 19, and the upper plate 1
From the center of 2 toward the outer edge, the upper plate 1
The upper plate 12 has an upper guide surface 34 that is inclined upward with respect to the upper surface of the upper plate 12 and is inclined upward with respect to the upper surface of the upper plate 12 in the direction of movement of the upper span of the endless belt 19.
In cooperation with the upper surface of the upper plate 12, both side edges along the paper discharge direction form a valley-shaped paper receiving surface that is higher than the center.
上板１２の二個の***部材３３の間の中央部に
は三組の無端ベルト１９のうちの中央に位置する
組の無端ベルト１９に対応する位置に一個の空気
吸入口３５が形成されており、中央の組の無端ベ
ルト１９は上側スパンの終端部にて空気吸入口３
５の上を走行するようになつている。 An air inlet 35 is formed in the center between the two raised members 33 of the upper plate 12 at a position corresponding to the central pair of the three endless belts 19. The endless belt 19 of the central set has an air inlet 3 at the end of the upper span.
It is designed to run on top of 5.
円筒状版胴１の第１図で見て反時計廻り方向の
回転に伴ない、印刷用紙Ｐは、円筒状版胴１とプ
レスローラ３との間に送られて該両者により挟ま
れ、円筒状版胴１の外周面に装着されている孔版
原紙２に接触し、その上面に孔版原紙２の穿孔画
像部より印刷インキを付与され、該上面に印刷画
像を形成される。この印刷用紙Ｐは印刷インキの
粘着性により円筒状版胴１の外周面に貼付くが、
その前縁が分離爪５の先端部５ａに接触すると、
円筒状版胴１の回転に伴なつて分離爪５による引
き剥し作用によつて円筒状版胴１の外周面より引
き剥され、その前縁部は自重と空気吸入口２２が
外気を吸引することにより該空気吸入口の付近に
生じている負圧によつて吸引ボツクス１１の上板
１２上に落下して無端ベルト１９に強く接触し、
円筒状版胴１の周速度より速い速度にて無端ベル
ト１９の上側スパンが移動することにより、該印
刷用紙は無端ベルト１９の走行に伴ない分離爪５
より遠ざかる。従つて印刷用紙Ｐのうち分離爪５
と接触するのはその前縁部のみである。 As the cylindrical plate cylinder 1 rotates in the counterclockwise direction as seen in FIG. It comes into contact with the stencil paper 2 mounted on the outer peripheral surface of the stencil cylinder 1, and print ink is applied to the upper surface of the stencil paper 2 from the perforated image area of the stencil paper 2, thereby forming a printed image on the upper surface. This printing paper P sticks to the outer peripheral surface of the cylindrical plate cylinder 1 due to the adhesiveness of the printing ink.
When its front edge comes into contact with the tip 5a of the separation claw 5,
As the cylindrical plate cylinder 1 rotates, it is torn off from the outer peripheral surface of the cylindrical plate cylinder 1 by the peeling action of the separating claw 5, and its front edge is exposed to its own weight and the air suction port 22 sucks outside air. As a result, due to the negative pressure generated near the air intake port, the air falls onto the upper plate 12 of the suction box 11 and strongly contacts the endless belt 19.
As the upper span of the endless belt 19 moves at a speed higher than the circumferential speed of the cylindrical plate cylinder 1, the printing paper is separated by the separating claw 5 as the endless belt 19 runs.
Get further away. Therefore, the separating claw 5 of the printing paper P
Only its leading edge is in contact with the
その後印刷用紙は分離爪５による分離作用では
なく、無端ベルト１９より及ぼされる引張り力に
よつて直接円筒状版胴１の外周面より引き剥さ
れ、分離爪５に接触することなく排紙されるの
で、通常周縁に沿つて余白を有する印刷用紙Ｐの
印刷画像面や分離爪５によつて擦られることはな
く、印刷画像面に分離爪５の軌跡が付くことはな
い。 After that, the printing paper is not separated by the separation claw 5, but is directly peeled off from the outer peripheral surface of the cylindrical plate cylinder 1 by the tensile force exerted by the endless belt 19, and is ejected without contacting the separation claw 5. Therefore, the printed image surface of the printing paper P, which normally has a margin along the periphery, is not rubbed by the separating claw 5, and the trajectory of the separating claw 5 is not left on the printed image surface.
印刷用紙Ｐは、無端ベルト１９の走行に伴なつ
て上板１２上をその始端部より終端部へ向けて移
動し、***部材３４の配設部分に差掛ると、その
両側縁部は***部材３３の上部案内面３４上を滑
つて移動し、中央部にては空気吸入口３５が外気
を吸引することにより該空気吸入口近傍に生じて
いる負圧によつて無端ベルト１９上に吸付けら
れ、第２図にて仮想線で示されている如く、前方
から見てＵ字形に弧状に湾曲し、見掛け上の剛性
が増大される。こうして湾曲されその剛性が増大
された状態にて、印刷用紙Ｐは無端ベルト１９の
走行に伴つてその終端部より突出され、排紙台７
の如き適当な印刷用紙受容装置へ向けて慣性によ
り飛翔し、その前縁にて確実に排紙台７の衝壁板
８に衝突して排紙台７上に実質的に水平な姿勢を
保つて落下する。 As the endless belt 19 travels, the printing paper P moves on the upper plate 12 from its starting end toward its terminal end, and when it reaches the area where the raised members 34 are provided, its both side edges are covered with raised members. The air inlet 35 slides on the upper guide surface 34 of the belt 33, and in the center part, the air inlet 35 sucks outside air, and the negative pressure generated near the air inlet 35 attracts it onto the endless belt 19. As shown by the imaginary line in FIG. 2, it is curved in a U-shape when viewed from the front, increasing the apparent rigidity. In this curved state with increased rigidity, the printing paper P is projected from its terminal end as the endless belt 19 runs, and is pushed out from the paper delivery tray 7.
The printing paper flies due to inertia toward a suitable printing paper receiving device such as the paper receiving device, and its leading edge reliably collides with the barrier plate 8 of the paper delivery tray 7 to maintain a substantially horizontal position on the paper delivery tray 7. and fall.
以上に於ては、本考案を特定の実施例について
詳細に説明したが、本考案がこれに限定されるも
のではなく、本考案の範囲内にて種々の実施例が
可能であることは当業者にとつて明らかであろ
う。 Although the present invention has been described above in detail with reference to specific embodiments, it is understood that the present invention is not limited to this and that various embodiments are possible within the scope of the present invention. This will be obvious to businesses.
第１図は本考案による印刷用紙剥離排出装置の
一つの実施例を示す縦断面図、第２図は第１図に
示す印刷用紙剥離排出装置をその出口側より見た
端面図、第３図は第１図及び第２図に示す印刷用
紙剥離排出装置に於けるベルトコンベア部を一部
切欠いて示す斜視図である。
１……円筒状版胴、２……孔版原紙、３……プ
レスローラ、４……支持軸、５……分離爪、６…
…支持軸、７……排紙台、８……衝壁板、１０…
…ベルトコンベア部、１１……吸引ボツクス、１
２……上板、１３……トンネル部、１４……底
板、１５……プーリ、１６……プーリ軸、１７…
…プーリ、１８……プーリ軸、１９……無端ベル
ト、２０……駆動プーリ、２１……駆動用無端ベ
ルト、２２……空気吸入口、２３……連通孔、２
４……フアンハウジング、２５……フアン室、２
６……電動機、２７……遠心フアン、２８……排
気孔、２９……ロアケース、３０……排気室、３
１……空気排出口、３２……フイルタ、３３……
***部材、３４……上部案内面、３５……空気吸
入口。
FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the printing paper peeling and discharging device according to the present invention, FIG. 2 is an end view of the printing paper peeling and discharging device shown in FIG. 1, viewed from its exit side, and FIG. 3 2 is a partially cutaway perspective view showing a belt conveyor section in the printing paper peeling and discharging device shown in FIGS. 1 and 2. FIG. DESCRIPTION OF SYMBOLS 1... Cylindrical plate cylinder, 2... Stencil paper, 3... Press roller, 4... Support shaft, 5... Separation claw, 6...
...Support shaft, 7... Paper discharge stand, 8... Wall plate, 10...
...Belt conveyor section, 11...Suction box, 1
2...Top plate, 13...Tunnel portion, 14...Bottom plate, 15...Pulley, 16...Pulley shaft, 17...
... Pulley, 18 ... Pulley shaft, 19 ... Endless belt, 20 ... Drive pulley, 21 ... Endless driving belt, 22 ... Air intake port, 23 ... Communication hole, 2
4...Fan housing, 25...Fan room, 2
6...Electric motor, 27...Centrifugal fan, 28...Exhaust hole, 29...Lower case, 30...Exhaust chamber, 3
1... Air exhaust port, 32... Filter, 33...
Raised member, 34... Upper guide surface, 35... Air intake port.
Claims (1)
印刷用紙剥離排出装置にして、版胴に近接して配
置された先端を有し版胴に貼り付いて版胴と共に
移動する印刷用紙の前縁に係合して版胴の回転に
伴つて版胴より印刷用紙を剥がす剥離爪と、前記
剥離爪の先端の下方に位置する始端より排紙方向
へ終端まで延在し版胴の周速より速い速度にて駆
動される通気性のベルトコンベアと、前記ベルト
コンベアの終端の近傍の両側縁部に於て該ベルト
コンベアの上面より上方に次第に***した印刷用
紙案内面を与える***部材と、主として前記ベル
トコンベアの始端の近傍と終端の近傍に於て該ベ
ルトコンベアの下方に開口する吸込口から空気を
吸引する空気吸引装置とを有することを特徴とす
る印刷用紙剥離排出装置。 A printing paper peeling and discharging device that peels off and discharges printing paper from a rotary printing plate cylinder.The leading edge of the printing paper has a tip located close to the printing cylinder and sticks to the printing cylinder and moves together with the printing cylinder. a peeling pawl that engages with the plate cylinder and peels the printing paper from the plate cylinder as the plate cylinder rotates; and a peeling pawl that extends from a starting end located below the tip of the peeling pawl to a terminal end in the paper ejection direction and that is faster than the circumferential speed of the plate cylinder. A ventilated belt conveyor driven at a high speed; and a raised member providing a printing paper guiding surface that is gradually raised above the top surface of the belt conveyor at both side edges near the end of the belt conveyor; A printing paper peeling and discharging device comprising: an air suction device that sucks air from suction ports opening below the belt conveyor near the starting end and near the ending end of the belt conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989056281U JPH0235717Y2 (en) | 1989-05-16 | 1989-05-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989056281U JPH0235717Y2 (en) | 1989-05-16 | 1989-05-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH022347U JPH022347U (en) | 1990-01-09 |
| JPH0235717Y2 true JPH0235717Y2 (en) | 1990-09-28 |
Family
ID=31282164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989056281U Expired JPH0235717Y2 (en) | 1989-05-16 | 1989-05-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0235717Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008275904A (en) * | 2007-04-27 | 2008-11-13 | Murata Mach Ltd | Image forming apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5088769A (en) * | 1973-11-23 | 1975-07-16 | ||
| JPS5623947B2 (en) * | 1974-09-04 | 1981-06-03 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6014274Y2 (en) * | 1979-07-31 | 1985-05-07 | キヤノン株式会社 | Copy paper separation and conveyance device for electrostatic copying machines |
-
1989
- 1989-05-16 JP JP1989056281U patent/JPH0235717Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5088769A (en) * | 1973-11-23 | 1975-07-16 | ||
| JPS5623947B2 (en) * | 1974-09-04 | 1981-06-03 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008275904A (en) * | 2007-04-27 | 2008-11-13 | Murata Mach Ltd | Image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH022347U (en) | 1990-01-09 |
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