JPH05138862A - Delivery apparatus of printing press - Google Patents
Delivery apparatus of printing pressInfo
- Publication number
- JPH05138862A JPH05138862A JP21783991A JP21783991A JPH05138862A JP H05138862 A JPH05138862 A JP H05138862A JP 21783991 A JP21783991 A JP 21783991A JP 21783991 A JP21783991 A JP 21783991A JP H05138862 A JPH05138862 A JP H05138862A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- cylinder
- transfer cylinder
- discharge
- paper discharge
- 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
Landscapes
- Handling Of Cut Paper (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は印刷機、特にオフセッ
ト印刷機において、転写胴と圧胴との間を通過した用紙
を排紙部に送る排紙装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus, and more particularly to an offset printing machine, and relates to a sheet discharging device for sending a sheet passing between a transfer cylinder and an impression cylinder to a discharging section.
【０００２】[0002]
【従来の技術】オフセット印刷機は、版の画像を転写胴
の周面に張ったゴムに転写し、これをさらに用紙に転写
することにより、印刷を行う。従来このようなオフセッ
ト印刷機は、あらかじめ正確に位置決めをした用紙の前
端を圧胴の爪台と鋼材製の爪との間に強く圧着して咥
え、用紙を圧胴に巻回せしめて転写胴の間に送り、転写
胴との接点で転写胴の画像を用紙面に転写して印刷しな
がら、圧胴を回転し、さらに用紙を排紙胴の爪にかえて
排紙台上に搬送して排紙を行う。2. Description of the Related Art An offset printing machine performs printing by transferring an image on a plate onto a rubber stretched around a peripheral surface of a transfer cylinder and then transferring the image onto a paper. Conventionally, such an offset printer presses the front edge of the paper, which has been accurately positioned in advance, between the claw base of the impression cylinder and the claw made of steel material and clamps it, winding the paper around the impression cylinder and transferring it. It is sent between the cylinders, the image of the transfer cylinder is transferred to the surface of the paper at the contact point with the transfer cylinder, and printing is performed, the impression cylinder is rotated, and the paper is transferred to the paper output table by changing the nail of the paper output cylinder. And eject the paper.
【０００３】また、小型のオフセット印刷機では、この
ような排紙装置を組み込むべき構造上の余裕がなく、し
かも製品のコスト高になること、及びカード印刷等で爪
によって用紙の前縁３〜５ｍｍ程度の余白を設けない
で、用紙全面に印刷する必要性から、前述のような排紙
機構を設けていないものが多い。このような小型印刷機
では、ゴム転写胴に用紙が巻回されたまま版胴側やイン
キローラー側に用紙が巻き込まれてしまうのを防止する
ため、例えば、転写胴から用紙をかき落すための小片等
を取付けた簡便な排紙手段が用いられている。Further, in a small-sized offset printing machine, there is no structural allowance for incorporating such a paper discharge device, and the cost of the product is high, and the leading edge 3 to 3 of the paper is cut by the nail in card printing or the like. Since it is necessary to print on the entire surface of the paper without providing a blank space of about 5 mm, the paper discharge mechanism as described above is not provided in many cases. In such a small printing machine, in order to prevent the paper from being caught on the plate cylinder side or the ink roller side while the paper is being wound on the rubber transfer cylinder, for example, for scraping the paper from the transfer cylinder. A simple paper discharge means with small pieces attached is used.
【０００４】[0004]
【発明が解決しようとしている課題】しかしながら、従
来のこのような装置のうち、爪で用紙を排紙する排紙胴
を設けた前者のものでは、構造が複雑で製品のコストも
高く、排紙胴の爪や回転のタイミング等の調整に手数を
要する。また、用紙の端を爪で強く咥えるため、用紙の
端が変形する。このため、用紙の前端３〜５ｍｍ程度の
余白を必要とし、紙面に対する有効な印刷面積が狭くな
ると共に、印刷後に用紙を裁断しなければならない。し
かも、この印刷機は、例えば、紙厚があるため小径の圧
胴に巻回しにくい用紙への印刷、カード類等でその全面
に印刷する場合等に不向きであり、印刷機の利用範囲が
限定される。However, of the conventional devices, the former one, which is provided with a paper ejection cylinder for ejecting the paper by the nails, has a complicated structure and the cost of the product is high. It takes time to adjust the claws of the torso and the timing of rotation. Further, the edge of the paper is deformed because the edge of the paper is strongly held by the nail. Therefore, a margin of about 3 to 5 mm on the front edge of the paper is required, the effective printing area on the paper surface is narrowed, and the paper must be cut after printing. Moreover, this printing machine is not suitable, for example, when printing on paper that is difficult to wind around a small-diameter impression cylinder due to the thickness of the paper, or when printing on the entire surface with cards, etc., and the range of use of the printing machine is limited. To be done.
【０００５】一方、排紙胴のない小型印刷機等では、油
性インクや水分等をなるべく多量に吸引することによっ
て、インキ独特の光沢、艶等を発揮するよう表面処理さ
れたいわゆるアート紙やコート紙などの高品質の美術印
刷に適する用紙等に印刷する場合、ゴムの転写胴の転写
面に用紙が張りついたまま剥がれずに巻き込まれ、次の
印刷サイクルに移行してしまうことが多いため、トラブ
ルを起こし易い。これらのトラブルを幾分でも防止して
印刷を行おうとすれば、インクの濃度を落す、最小限の
量のインクを盛る、或は印圧を最低限度まで低くし、用
紙の転写胴への張りつきを防止する等、さまざまの対策
を要することになる。しかもそのような対策を施した場
合、印刷品質の著しい低下を来し、高品質の印刷物を得
ることが不可能である。On the other hand, in a small-sized printing machine without a discharge cylinder, so-called art paper or coat which has been surface-treated so as to exhibit the luster and luster peculiar to the ink by sucking as much of the oil-based ink and water as possible. When printing on paper such as paper that is suitable for high-quality art printing, the paper often sticks to the transfer surface of the rubber transfer cylinder without sticking, and the next printing cycle occurs. , Easy to cause trouble. If you try to prevent these problems to some extent and perform printing, drop the ink density, fill the minimum amount of ink, or reduce the printing pressure to the minimum, and stick the paper to the transfer cylinder. Various measures will be required to prevent such problems. Moreover, when such a measure is taken, the print quality is significantly deteriorated, and it is impossible to obtain a high-quality printed matter.
【０００６】この発明は前記従来の排紙装置の課題に鑑
み、これを解消すべくなされたもので、用紙に全く傷を
付けず、確実に用紙の排紙動作が行え、これにより印刷
工程の合理化と印刷品質の向上を図ることのできる印刷
機の用紙排紙装置を提供することを目的とする。The present invention has been made in view of the above-mentioned problems of the conventional paper discharge device, and has been made in order to solve the problem. The paper discharge operation can be surely performed without damaging the paper at all, whereby the printing process can be performed. It is an object of the present invention to provide a paper discharge device for a printing press that can streamline and improve print quality.
【０００７】[0007]
【課題を解決するための手段】すなわち、この発明で
は、前記目的を達成するため、転写胴と圧胴との間を通
過する用紙に印刷を行う印刷機の排紙装置において、前
記転写胴と圧胴との間を通過した紙を受ける排紙部と、
該排紙部と前記転写胴との間にあって、転写胴軸と平行
な軸の周りを転写胴と等周速で回転し、かつ前記回転軸
の周りに放射状に吸着子を配列した排紙胴と、前記排紙
胴の回転に同期して、同排紙胴をその吸着子が転写胴に
接する高さと排紙部の紙導入部の近くを通過する高さと
の間で上下動させる上下駆動機構と、前記排紙胴の回転
に同期して、その吸着子を転写胴に接する位置から排紙
部の紙導入部の近くを通過する直前まで負圧に維持する
真空排気路機構とを有することを特徴とする印刷機の排
紙装置を提供する。That is, according to the present invention, in order to achieve the above object, in a paper discharge device of a printing machine for printing on a sheet passing between a transfer cylinder and an impression cylinder, A paper discharge section for receiving the paper that has passed between the impression cylinder,
A discharge cylinder, which is located between the discharge section and the transfer cylinder, rotates about an axis parallel to the transfer cylinder axis at a constant circumferential speed with the transfer cylinder, and has adsorbents arranged radially around the rotation axis. And a vertical drive for synchronizing the rotation of the paper ejection cylinder and vertically moving the paper ejection cylinder between the height at which the suction member contacts the transfer cylinder and the height at which the suction member passes near the paper introducing portion of the paper ejection unit. A mechanism and a vacuum exhaust path mechanism that maintains a negative pressure in synchronization with the rotation of the paper discharge cylinder until a position where the suction member contacts the transfer cylinder immediately before passing through the vicinity of the paper introduction portion of the paper discharge unit. A paper discharge device of a printing machine characterized by the above.
【０００８】[0008]
【作用】この発明によれば、排紙胴の回転軸の周りに配
置された吸着子が転写胴と等速で回転しながら、この回
転と同期して上下駆動機構により、転写胴に接近したり
離れたりするよう駆動される。そして、これと同期し
て、真空排気路機構が、吸着子を転写胴に接する位置か
ら排紙部の紙導入部を通過する直前まで負圧に維持する
ため、転写胴と圧胴との間を通過し、印刷された用紙の
裏面を吸着子が吸着し、同用紙を転写胴から離してこれ
を排紙部まで運び、吸着を解除して放出する。これによ
って、用紙が転写胴から離れて排紙部に排紙される。こ
のように、本発明の排紙装置によれば、爪等で用紙の一
部を損傷することなく排紙が可能である。According to the present invention, the adsorbent arranged around the rotation axis of the paper discharge cylinder is rotated at a constant speed with the transfer cylinder, and in synchronism with this rotation, it is moved closer to the transfer cylinder by the vertical drive mechanism. Driven away and away. In synchronism with this, the vacuum exhaust path mechanism maintains a negative pressure from the position where the suction element contacts the transfer cylinder until just before passing through the paper introduction section of the paper discharge section. Then, the adsorbent adsorbs the back surface of the printed paper sheet, and the paper sheet is separated from the transfer cylinder and carried to the paper discharge section, released from the adsorption. As a result, the paper is separated from the transfer cylinder and discharged to the paper discharge unit. As described above, according to the paper discharge device of the present invention, it is possible to discharge the paper without damaging a part of the paper with the nail or the like.
【０００９】[0009]
【実施例】以下、本発明の実施例について、図面を参照
しながら、詳細に説明する。図１〜図４はこの発明の実
施例であるオフセット印刷機の要部を表したものであり
図５はその正面を表したものである。Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 4 show a main part of an offset printing machine according to an embodiment of the present invention, and FIG. 5 shows a front surface thereof.
【００１０】図１及び図２において、６１は、給紙台で
あり、この給紙台６１に置かれた用紙１１は、真空吸着
ピックアップヘッド６２で１枚ずつ上からピックアップ
され、２つのプーリにより矢印方向に回転される搬送ベ
ルト６３と、その上で矢印方向に回転されている送りロ
ーラ６４との間に供給され、さらに送りローラ６５を経
てストッパ６６で停止される。搬送ベルト６３は、その
先側が用紙ガイド６８に連絡されている。この用紙ガイ
ド６８の脇にペーパーセンサ６７が有り、ここでストッ
パ６６に停止された用紙が検知されている状態では、前
記ピックアップヘッド６２での紙送りは停止されてい
る。In FIGS. 1 and 2, reference numeral 61 denotes a paper feed table. The sheets 11 placed on the paper feed table 61 are picked up one by one by a vacuum suction pickup head 62 from above and two pulleys are used. It is supplied between the conveyor belt 63 which is rotated in the arrow direction and the feed roller 64 which is rotated in the arrow direction, and is stopped by the stopper 66 via the feed roller 65. The front side of the transport belt 63 is connected to the paper guide 68. A paper sensor 67 is provided beside the paper guide 68, and when the paper stopped by the stopper 66 is detected here, the paper feed by the pickup head 62 is stopped.
【００１１】前記ストッパ６６の先には、転写胴２６と
圧胴２５とが図１で矢印で示す方向に転がり接触してお
り、さらに転写胴２６には、版胴２７が図１で矢印で示
す方向に転がり接触している。前記ストッパ６６での停
止解除により、搬送ベルト６３側から送られて来る用紙
１１が、前記転写胴２６と圧胴２５との間に送られ、そ
の間の圧力によって版胴２７側から転写胴２６に転写さ
れた版パターンが用紙に転写される。多くの場合用紙１
１は、印刷インクの有する粘性によって、転写胴２６の
表面に張り付いた状態でその先に送られる。図５に示す
ように、これら圧胴２５、転写胴２６及び版胴２７は、
平行に配置した印刷機械枠５１、５１の間に回転自在に
架設され、回転駆動機構（図示せず）により、図１にお
いて各々矢印で示す方向に等速度で回転駆動される。At the tip of the stopper 66, the transfer cylinder 26 and the impression cylinder 25 are in rolling contact with each other in the direction shown by the arrow in FIG. 1, and the plate cylinder 27 is attached to the transfer cylinder 26 by the arrow in FIG. Rolling contact is in the direction shown. By releasing the stop at the stopper 66, the sheet 11 sent from the side of the conveyor belt 63 is sent between the transfer cylinder 26 and the impression cylinder 25, and due to the pressure therebetween, the sheet 11 is transferred from the plate cylinder 27 side to the transfer cylinder 26. The transferred plate pattern is transferred to the paper. Paper 1 in most cases
Due to the viscosity of the printing ink, 1 is attached to the surface of the transfer cylinder 26 and then sent to the end. As shown in FIG. 5, the impression cylinder 25, the transfer cylinder 26, and the plate cylinder 27 are
It is rotatably installed between printing machine frames 51, 51 arranged in parallel, and is rotationally driven at a constant speed in directions indicated by arrows in FIG. 1 by a rotational drive mechanism (not shown).
【００１２】このようなオフセット印刷機において、本
発明では、回転軸４０の周りに放射状に吸着子２２、２
２’、２２’…を配列した排紙胴２８が設けられてい
る。図示の実施例では、図５に示すように、前記印刷機
械枠５１、５１の内側に対向的におかれた一対のフラン
ジ３５、フランジ３６に回転軸４０を架設し、この回転
軸４０の周りに、吸着子取付管３２、３２’、３２’…
と補強ビーム４１、４１…とを架設し、円筒籠状の排紙
胴２８が構成されている。そして、前記回転軸４０の両
端は、前記圧胴２５の軸２４の両側に揺動自在に軸支さ
れた両側の機枠４２、４２に回転自在に軸支されてお
り、この回転軸４０は、圧胴２５の軸２４と平行となっ
ている。In such an offset printing machine, according to the present invention, the adsorbents 22, 2 are radially arranged around the rotary shaft 40.
A paper discharge cylinder 28 in which 2 ', 22', ... Are arranged is provided. In the illustrated embodiment, as shown in FIG. 5, a rotary shaft 40 is erected on a pair of flanges 35 and 36 that are placed inside the printing machine frames 51, 51 so as to face each other. The adsorber mounting tubes 32, 32 ', 32' ...
And the reinforcing beams 41, 41 ... Are erected to form a cylindrical basket-shaped delivery cylinder 28. Both ends of the rotary shaft 40 are rotatably supported by machine frames 42, 42 that are swingably supported on both sides of the shaft 24 of the impression cylinder 25. It is parallel to the shaft 24 of the impression cylinder 25.
【００１３】さらに、図５において左側のフランジ３５
と前記機枠４２との間に真空排気路機構を構成するバキ
ュームバルブ板１４が設けられ、このバキュームバルブ
板１４が機枠４２側に設けられたバネ１８、１８の弾力
でフランジ３５に押当されている。Further, in FIG. 5, the left flange 35 is provided.
And the machine frame 42, a vacuum valve plate 14 constituting a vacuum exhaust passage mechanism is provided, and the vacuum valve plate 14 is pressed against the flange 35 by the elasticity of the springs 18, 18 provided on the machine frame 42 side. Has been done.
【００１４】図１〜図４に示すように、前記吸着子取付
管３２、３２’、３２’…には、その長手方向に並んで
吸着子２２、２２…及び２２’、２２’…が回転軸４０
を中心として放射状に取り付けられており、３１、３
１’、３１’…は、それらを吸着子取付管３２、３
２’、３２’…に取り付けるための継手である。これら
吸着子２２、２２’、２２’…は、先端にゴム等の弾性
体からなるベローズ状のノズルを有するサクションヘッ
ドである。As shown in FIGS. 1 to 4, the adsorbents 22, 22, ... And 22 ', 22' ... are rotated in the longitudinal direction of the adsorbent mounting tubes 32, 32 ', 32'. Axis 40
Radially attached around the
1 ', 31', ...
It is a joint for attaching to 2 ', 32' ... These adsorbents 22, 22 ', 22' ... Are suction heads each having a bellows nozzle made of an elastic material such as rubber at the tip.
【００１５】この排紙胴２８の側面形状を図３及び図４
に詳細に示すが、前記吸着子２２、２２’、２２’…の
うち、最も先頭列の吸着子２２は、回転軸４０から最も
離れており、回転軸４０の回転により、それより遅い角
度で回転する２列以降の吸着子２２’、２２’…は、前
記先頭列の吸着子２２より回転軸側４０側に引き込まれ
て設置されている。また、前者の先頭列の吸着子２２を
取り付けた吸着子取付管３２の端部は、前記バキューム
バルブ板１４に面した側のみが開口しており、排紙胴２
８の回転により、その開口端が同バキュームバルブ板１
４に形成された排気溝１５に位置が合う範囲の角度での
み吸着子２２が排気ダクト１９に通じ、真空排気され
る。また、２列以降の吸着子２２’、２２’…を取り付
けた吸着子取付管３２の端部も、やはり前記バキューム
バルブ板１４に面した側のみが開口しており、排紙胴２
８の回転により、その開口端が排気溝１６に位置が合う
範囲の角度でのみ排気ダクト１９に通じ、真空排気され
る。排気溝１６は、排気溝１５よりバキュームバルブ板
１４の中心寄りに形成され、かつ２列目以降の吸着子２
２’、２２’…を１列目の吸着子２２より、遅い角度で
順次真空吸引できるような位置に形成されている。The side shape of the paper discharge cylinder 28 is shown in FIGS.
As will be described in detail below, among the adsorbents 22, 22 ', 22' ..., the adsorbents 22 in the most front row are the farthest from the rotary shaft 40, and the rotation of the rotary shaft 40 causes a slower angle. The rotating rows of the adsorbents 22 ', 22', and the like on and after the second row are installed so as to be drawn toward the rotation shaft side 40 from the adsorbents 22 in the leading row. In the former case, the end of the suction element mounting tube 32 to which the suction element 22 in the first row is attached is opened only on the side facing the vacuum valve plate 14, and the discharge cylinder 2
By the rotation of 8, the open end of the vacuum valve plate 1
The adsorbent 22 communicates with the exhaust duct 19 and is evacuated only at an angle within a range where the adsorbent 22 is aligned with the exhaust groove 15 formed in FIG. Further, the end portions of the suction element mounting pipes 32 to which the suction elements 22 ', 22' ... of the second and subsequent rows are attached are also open only on the side facing the vacuum valve plate 14, and the discharge cylinder 2
By the rotation of 8, the open end is communicated with the exhaust duct 19 only at an angle within the range where the exhaust groove 16 is aligned with the exhaust groove 16, and vacuum exhaust is performed. The exhaust groove 16 is formed closer to the center of the vacuum valve plate 14 than the exhaust groove 15, and the adsorbers 2 in the second and subsequent rows are formed.
2 ', 22' ... are formed at positions such that they can be sequentially vacuum-sucked at a slower angle than the first row of the adsorbers 22.
【００１６】図３〜図５に示されたように、この排紙胴
２８の回転軸４０の一端側（図５において右端側）に取
付けられた歯車３７が、圧胴２５の軸２４に固定された
歯車５５に遊車３８を介して噛み合っており、これら歯
車３７、５５は同じ歯数である。従って、排紙胴２８
は、圧胴２５及び転写胴２６と等速回転をするようにな
っている。As shown in FIGS. 3 to 5, the gear 37 attached to one end side (the right end side in FIG. 5) of the rotary shaft 40 of the discharge cylinder 28 is fixed to the shaft 24 of the impression cylinder 25. The gear 55 is meshed with the gear 55 via the idler 38, and the gears 37 and 55 have the same number of teeth. Therefore, the output cylinder 28
Is configured to rotate at a constant speed with the impression cylinder 25 and the transfer cylinder 26.
【００１７】さらに、前記排紙胴２８は、その回転に伴
い上下に往復運動をするように、図１及び図２に示すよ
うなカム・リンク機構からなる上下駆動機構に連結され
ている。すなわち、圧胴２５と歯車機構（図示せず）で
連結され、図１及び図２で矢印で示す方向に圧胴２５と
同じ角速度で回転する作動カム４３と、これに従動する
カムフロワー５４を有し、作動カム４３によるカムフロ
ワー５４の上下動が、リンク４４、４６、４７を介して
前記機枠４２に伝達され、圧胴２５の軸２４を支点とし
て、排紙胴２８を揺動させ、それを転写胴２６と排紙台
５０との間で往復させる。Further, the paper discharge cylinder 28 is connected to a vertical drive mechanism composed of a cam link mechanism as shown in FIGS. 1 and 2 so as to reciprocate up and down with its rotation. That is, an operating cam 43 that is connected to the impression cylinder 25 by a gear mechanism (not shown) and rotates at the same angular velocity as the impression cylinder 25 in the direction indicated by the arrow in FIGS. 1 and 2 and a cam follower 54 that follows this are provided. Then, the vertical movement of the cam blower 54 by the actuating cam 43 is transmitted to the machine frame 42 via the links 44, 46 and 47, and the discharge cylinder 28 is swung about the shaft 24 of the impression cylinder 25 as a fulcrum. Is reciprocated between the transfer cylinder 26 and the paper discharge table 50.
【００１８】前記排紙胴２８のさらに先には、排紙部と
して、排紙台５０が設けられ、その前後は、前方ガイド
５２と排紙ストッパー５３とで囲まれている。また、排
紙台５０への入口となる前方ガイド５２の上端部分に
は、排紙ローラー４８が設けられ、この上に圧縮空気を
噴射する空気噴射管２９が平行に架設されている。排紙
コロ４８は、排紙台５０に向かって排紙胴２８の周速よ
りも速い周速で回転し、用紙１１に排紙台５０側へ送り
を与える。A paper discharge table 50 is provided as a paper discharge portion further ahead of the paper discharge cylinder 28, and the front and rear thereof are surrounded by a front guide 52 and a paper discharge stopper 53. Further, a paper discharge roller 48 is provided at an upper end portion of the front guide 52 which is an entrance to the paper discharge table 50, and an air injection pipe 29 for injecting compressed air is installed in parallel on the paper discharge roller 48. The paper discharge rollers 48 rotate toward the paper discharge tray 50 at a peripheral speed higher than the peripheral speed of the paper discharge cylinder 28, and feed the paper 11 to the paper discharge tray 50 side.
【００１９】このオフセット印刷機では、図１で示され
たように、ピックアップヘッド６２で給紙台６１から送
り出された用紙は、ストッパ６６で一旦停止される。こ
のストッパ６６は、転写胴２６の回転に合わせて開閉動
作し、図２で示すように、ストッパ６６が開放さて、用
紙ガイド６８上の用紙１１が送り出された後、ペーパー
センサ６７からの信号により、ピックアップヘッド６２
で給紙台６１から次の用紙１１が送り出される。In this offset printing machine, as shown in FIG. 1, the paper sent from the paper feed table 61 by the pickup head 62 is temporarily stopped by the stopper 66. The stopper 66 opens and closes in accordance with the rotation of the transfer cylinder 26, and as shown in FIG. 2, after the stopper 66 is opened and the paper 11 on the paper guide 68 is fed out, a signal from the paper sensor 67 is generated. , Pickup head 62
Then, the next paper 11 is sent out from the paper feed table 61.
【００２０】ストッパ６６から送り出された用紙１１
は、転写胴２６、圧胴２５間を通過し、印刷されて送り
出される。このとき、送り出される用紙１１の前端部分
に合わせて排紙胴２８が回転しながら上昇し、転写胴２
６に接近する。これに伴って、図３に示すように、１列
目の吸着子２２の吸着子取付管３２の管端開口部が排気
孔溝１５に合い、吸着子２２の先端が真空吸引される。
同時に、排紙胴２８が更に転写胴２６に接近し、吸着子
２２が用紙１１の裏面に当接してそれを吸着する。この
とき、吸着子２２のベローズの部分が収縮して用紙１１
を排紙胴２８の中心の方向に向かって引き、転写胴２６
から用紙１１の端を引き離す。これと同時に排紙胴２８
が回転し、前記吸着子２２の吸着子取付管３２の管端開
口部がバキュームバルブ１４の排気溝１５の末端に至
る。他方、この後を追って２列目の吸着子２２’の吸着
子取付管３２’の管端開口部が排気溝１６に合い、吸着
子２２’の先端の真空吸引が開始され、用紙１１の裏面
を吸着する。その後、１列目の吸着子２２の吸着子取付
管３２の管端開口部が排気孔溝１５を離れ、吸着子２２
が吸着を停止する。次いで３列目の吸着子２２’が同様
にして吸着を開始し、以下同様に各列の吸着子２２’２
２’…が用紙１１を吸着する。Paper 11 sent out from stopper 66
Passes between the transfer cylinder 26 and the impression cylinder 25, is printed, and is sent out. At this time, the delivery cylinder 28 is raised while rotating in accordance with the front end portion of the sheet 11 being sent out,
Approach 6 Along with this, as shown in FIG. 3, the tube end opening portion of the adsorber mounting tube 32 of the adsorber 22 in the first row fits into the exhaust hole groove 15, and the tip of the adsorber 22 is vacuum-sucked.
At the same time, the paper discharge cylinder 28 further approaches the transfer cylinder 26, and the suction element 22 abuts against the back surface of the paper 11 and sucks it. At this time, the bellows portion of the adsorber 22 contracts and the paper 11
The transfer drum 26 toward the center of the discharge drum 28
The edge of the paper 11 is pulled away from. At the same time, the output cylinder 28
Rotates, and the tube end opening of the suction element mounting tube 32 of the suction element 22 reaches the end of the exhaust groove 15 of the vacuum valve 14. On the other hand, after this, the tube end opening of the suction element mounting tube 32 'of the second row of suction element 22' is aligned with the exhaust groove 16, vacuum suction of the tip of the suction element 22 'is started, and the back surface of the sheet 11 is reached. Adsorb. Thereafter, the tube end opening of the adsorber mounting tube 32 of the adsorber 22 in the first row leaves the exhaust hole groove 15,
Stops adsorption. Next, the adsorbents 22 'in the third row similarly start adsorbing, and thereafter the adsorbents 22'2 in each row similarly.
2 '... adsorbs the paper 11.
【００２１】このようにして、各列の吸着子２２、２
２’、２２’…が用紙の裏面に順次吸着し、転写胴２６
から用紙１１を剥し、さらに排紙胴２８の回転に伴って
用紙１１が図１〜図４において左方向に搬送されるのに
伴い、排紙胴２８は圧胴２４を支点として下方に揺動さ
れ、転写胴２６側から排紙台５０側に接近する。図２及
び図４で示すように、この状態では１列目から２列目の
吸着子２２、２２’の吸着状態は既に解除されており、
フリーとなった用紙１１の先端が排紙コロ４８に乗せら
れる。In this way, the adsorbers 22 and 2 in each row are
2 ', 22' ... are sequentially attracted to the back surface of the paper, and the transfer cylinder 26
The paper 11 is peeled from the paper, and as the paper 11 is conveyed leftward in FIGS. 1 to 4 as the paper discharge cylinder 28 rotates, the paper discharge cylinder 28 swings downward with the impression cylinder 24 as a fulcrum. Then, the side of the transfer cylinder 26 approaches the side of the sheet discharge tray 50. As shown in FIGS. 2 and 4, in this state, the adsorption state of the adsorbents 22 and 22 'in the first row to the second row has already been released,
The free end of the paper 11 is placed on the paper discharge roller 48.
【００２２】この排紙コロ４８は、その回転により、排
紙台５０に向かって排紙胴２８の周速よりも速い周速で
用紙１１に排紙台５０側へ送りを与える。またこのと
き、図４に矢印で示すように、前記空気噴射管２９から
排紙コロ４８の上の用紙１１に向けて圧縮空気が吹きつ
けられ、排紙コロ４８から用紙１１により確実に送りが
与えられる。これによって、用紙１１が排紙台５０の上
に送られ、順次積み重ねられる。以下、同様の動作を繰
り返し、用紙１１に印刷を行いながらその排紙が行なわ
れる。Due to the rotation of the paper ejection roller 48, the paper 11 is fed toward the paper ejection tray 50 at a peripheral speed higher than the peripheral speed of the paper ejection drum 28 toward the paper ejection tray 50. Further, at this time, as shown by the arrow in FIG. 4, compressed air is blown from the air injection pipe 29 toward the paper 11 on the paper discharge roller 48, and the paper is reliably fed from the paper discharge roller 48. Given. As a result, the sheets 11 are sent onto the sheet discharge tray 50 and sequentially stacked. After that, the same operation is repeated, and the paper is discharged while the paper 11 is being printed.
【００２３】[0023]
【発明の効果】以上説明したように、この発明によれ
ば、圧胴に用紙を咥える爪がなく、転写胴に張りつきや
すい用紙の場合も、逆に転写胴に張りつかずに送り出さ
れてくる用紙の場合でも、吸着子を用いた排紙装置が印
刷直後の用紙の裏面を順次吸着し、用紙を毀損すること
なく、排紙を行い得る。従って、用紙に爪の咥えのため
の余白を必要とせず、印刷後の仕上裁断を省くことがで
きる。また、用紙の全面に印刷することができるので、
名刺、ハガキなどの仕上裁断のできない用紙への全面印
刷及び金縁のカード類などへの印刷も可能なことから印
刷精度の向上と用紙の節約と作業の省力化を図ることが
できる。As described above, according to the present invention, even in the case where the impression cylinder does not have a claw for holding the paper and is easily stuck to the transfer cylinder, the paper is sent out without sticking to the transfer cylinder. Even in the case of incoming paper, the paper ejecting device using the adsorber can adsorb the back surface of the paper immediately after printing in order and eject the paper without damaging the paper. Therefore, a margin for holding the nail is not required on the paper, and the finish cutting after printing can be omitted. Also, because it is possible to print on the entire surface of the paper,
Since it is possible to perform full-scale printing on paper such as business cards and postcards that cannot be finish-cut, and printing on cards with gold edges, it is possible to improve printing accuracy, save paper, and save labor.
【図１】本発明の実施例を示すオフセット印刷機の余分
な部分を省いた側面図である。FIG. 1 is a side view of an offset printing machine showing an embodiment of the present invention with an unnecessary portion omitted.
【図２】本発明の実施例を示すオフセット印刷機の余分
な部分を省いた側面図であって、図１の後のステップの
動作を示すものである。FIG. 2 is a side view of the offset printing machine according to the embodiment of the present invention with an unnecessary portion omitted, showing an operation of a step after FIG.
【図３】図１の要部拡大図である。FIG. 3 is an enlarged view of a main part of FIG.
【図４】図２の要部拡大図である。FIG. 4 is an enlarged view of a main part of FIG.
【図５】実施例を示すオフセット印刷機の余分な部分を
省いた正面図である。FIG. 5 is a front view of the offset printing machine according to the embodiment with an extra portion omitted.
１１ 用紙 １５ 排気孔溝 １６ 排気孔溝 ２２ 吸着子 ２４ 圧胴軸 ２５ 圧胴 ２６ 転写胴 ２７ 版胴 ２８ 排紙胴 ３７ 歯車 ３８ 遊車 ３９ 圧胴歯車 ４４ リンク ４６ リンク ４７ リンク ４８ 排紙コロ ５０ 排紙台 ５４ カムフロワー 11 Paper 15 Exhaust Hole Groove 16 Exhaust Hole Groove 22 Adsorber 24 Impression Cylinder Shaft 25 Impression Cylinder 26 Transfer Cylinder 27 Plate Cylinder 28 Paper Ejection Cylinder 37 Gear 38 Gear Wheel 39 Link Cylinder 44 Link 46 Link 47 Link 48 Ejection Roll 50 Output tray 54 Camfloor
Claims (1)
刷を行う印刷機の排紙装置において、前記転写胴と圧胴
との間を通過した紙を受ける排紙部と、該排紙部と前記
転写胴との間にあって、転写胴軸と平行な軸の周りを転
写胴と等周速で回転し、かつ前記回転軸の周りに放射状
に吸着子を配列した排紙胴と、前記排紙胴の回転に同期
して、同排紙胴をその吸着子が転写胴に接する高さと排
紙部の紙導入部の近くを通過する高さとの間で上下動さ
せる上下駆動機構と、前記排紙胴の回転に同期して、そ
の吸着子を転写胴に接する位置から排紙部の紙導入部の
近くを通過する直前まで負圧に維持する真空排気路機構
とを有することを特徴とする印刷機の排紙装置。1. A paper discharge device of a printing machine for printing on a paper sheet passing between a transfer cylinder and an impression cylinder, and a paper discharge section for receiving the paper sheet passed between the transfer cylinder and the impression cylinder, A paper discharge cylinder that is located between the paper discharge unit and the transfer cylinder, rotates about an axis parallel to the transfer cylinder axis at a constant circumferential speed with the transfer cylinder, and has adsorbents arranged radially around the rotation axis; A vertical drive mechanism that moves the discharge cylinder up and down in synchronization with the rotation of the discharge cylinder between the height at which the suction member contacts the transfer cylinder and the height at which the suction member passes near the paper introduction portion of the discharge portion. And a vacuum evacuation path mechanism that maintains negative pressure in synchronism with the rotation of the paper ejection cylinder until the suction member passes from a position in contact with the transfer cylinder to a position immediately before passing near the paper introduction portion of the paper ejection portion. A paper discharge device for a printing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21783991A JPH05138862A (en) | 1991-08-03 | 1991-08-03 | Delivery apparatus of printing press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21783991A JPH05138862A (en) | 1991-08-03 | 1991-08-03 | Delivery apparatus of printing press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05138862A true JPH05138862A (en) | 1993-06-08 |
Family
ID=16710568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21783991A Pending JPH05138862A (en) | 1991-08-03 | 1991-08-03 | Delivery apparatus of printing press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05138862A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9440511B2 (en) | 2010-03-10 | 2016-09-13 | Itw Fastener Products Gmbh | Sound deadening baffle for a ventilation valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60259450A (en) * | 1984-05-17 | 1985-12-21 | ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト | Feeding drum for conveying sheet |
| JPS6480540A (en) * | 1987-09-24 | 1989-03-27 | Shinano Kenshi Co | Printing press |
-
1991
- 1991-08-03 JP JP21783991A patent/JPH05138862A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60259450A (en) * | 1984-05-17 | 1985-12-21 | ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト | Feeding drum for conveying sheet |
| JPS6480540A (en) * | 1987-09-24 | 1989-03-27 | Shinano Kenshi Co | Printing press |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9440511B2 (en) | 2010-03-10 | 2016-09-13 | Itw Fastener Products Gmbh | Sound deadening baffle for a ventilation valve |
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