JP4495482B2 - Double-sided printing machine or double-sided coating device - Google Patents

Double-sided printing machine or double-sided coating device Download PDF

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JP4495482B2
JP4495482B2 JP2004041242A JP2004041242A JP4495482B2 JP 4495482 B2 JP4495482 B2 JP 4495482B2 JP 2004041242 A JP2004041242 A JP 2004041242A JP 2004041242 A JP2004041242 A JP 2004041242A JP 4495482 B2 JP4495482 B2 JP 4495482B2
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cylinder
impression cylinder
paper
printing unit
sheet
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JP2005231111A (en
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京太郎 小沼
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Komori Corp
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Description

本発明は、シート状物の表面と裏面とを印刷またはコーティングする両面印刷機または両面コーティング装置に関するものである。   The present invention relates to a double-sided printing machine or a double-sided coating apparatus that prints or coats the front and back surfaces of a sheet-like material.

従来の両面印刷機は、圧胴の上部に表面印刷ユニットを備えるとともに、圧胴の下部に裏面印刷ユニットを備え、これら表面印刷ユニットと裏面印刷ユニットとで交互に紙の表面と裏面とを印刷するものがある（例えば、特許文献１参照）。また、他の従来の両面印刷機は、上流側の圧胴と下流側の圧胴とに対接する反転胴と、上流側の圧胴に巻き付けられた紙を反転させながら下流側の圧胴に受け渡す反転装置と、両面刷時における紙のサイズに対応して反転装置を作動させるカム機構の移動動作と、反転胴下流側の圧胴の機械位相に対する上流側の圧胴の機械位相の変更動作とをそれぞれ検出する複数の検出手段と、これら検出手段からの検出信号によってカム機構の移動動作と機械位相の変更動作とを制御する制御手段とを備えたものがある（例えば、特許文献２参照）。なお、本出願人は、本明細書に記載した先行技術文献情報で特定される先行技術文献以外には、本発明に密接に関連する先行技術文献を出願時までに見付け出すことはできなかった。
特開平１１−１０５２４９号公報（段落「００１６」、「００２１」および図１） 特開平１０−５８６５４号公報（段落「００１４」、「００５７」〜「００６７」、「００９４」〜「００９９」および図１、図４、図８、図１２〜図１７） Conventional double-sided printing presses have a front surface printing unit at the top of the impression cylinder and a back surface printing unit at the bottom of the impression cylinder. These front surface printing unit and back surface printing unit print the front and back surfaces of paper alternately. (For example, refer to Patent Document 1). Another conventional double-sided printing machine has a reversing cylinder that is in contact with an upstream impression cylinder and a downstream impression cylinder, and a downstream impression cylinder while reversing the paper wound around the upstream impression cylinder. The reversing device to be transferred, the movement of the cam mechanism that activates the reversing device according to the paper size at the time of duplex printing, and the mechanical phase change of the upstream impression cylinder relative to the mechanical phase of the impression cylinder downstream of the reversing cylinder There are those provided with a plurality of detection means for detecting each of the movements and a control means for controlling the movement operation of the cam mechanism and the change operation of the mechanical phase by the detection signals from these detection means (for example, Patent Document 2). reference). In addition, the applicant could not find any prior art documents closely related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in the present specification. .
JP-A-11-105249 (paragraphs “0016” and “0021” and FIG. 1) JP-A-10-58654 (paragraphs “0014”, “0057” to “0067”, “0094” to “0099” and FIGS. 1, 4, 8, and 12 to 17)

上述した従来の両面印刷機のうち前者の場合には、圧胴の上下に印刷ユニットを配置する構造であるために、印刷機の高さ方向の寸法が大きくなり搬入ができないおそれがあるという問題があった。また、表面印刷ユニットの他に裏面を専用に印刷する裏面印刷ユニットを設けなければならないため、製造コストが増大するという問題もあった。また、紙のくわえ替えの回数が多いため、高精度のくわえ替えが要求されていた。また、従来の両面印刷機のうち後者の場合には、構造が複雑な反転機構を必要とするというばかりではなく、紙のサイズに対応した複雑な切替作業を多くのセンサやエンコーダ等の検出手段によって行うため製造コストが増大していた。また、紙のくわえ替えを紙の始端から紙尻へ変える必要があるため、高精度のくわえ替えが要求されるとともに、紙を無理な状態で反転させるため機械の速度を速くすることができないという問題があった。   In the former case of the above-described conventional double-sided printing machine, the printing unit is arranged above and below the impression cylinder, so that the size of the printing machine in the height direction may be large and cannot be carried in. was there. In addition to the front surface printing unit, a back surface printing unit that prints the back surface exclusively must be provided, resulting in an increase in manufacturing cost. In addition, since the number of times of paper replacement is large, high-accuracy replacement is required. In the latter case of the conventional double-sided printing machines, not only does the reversing mechanism have a complicated structure, but also a complicated switching operation corresponding to the paper size is detected by many sensors, encoders, etc. Therefore, the manufacturing cost has increased. In addition, since it is necessary to change the paper replacement from the beginning of the paper to the paper bottom, high-accuracy replacement is required, and the speed of the machine cannot be increased because the paper is reversed in an unreasonable state. There was a problem.

本発明は上記した従来の問題に鑑みなされたものであり、その目的とするところは、装置の高さを低くするとともに、構造を簡素化し、かつ製造コストの低減を図ることにある。   The present invention has been made in view of the above-described conventional problems, and an object thereof is to reduce the height of the apparatus, simplify the structure, and reduce the manufacturing cost.

この目的を達成するために、請求項１に係る発明は、回転自在に支持され周面に切欠き部を有する第１の圧胴と、前記第１の圧胴と対向し回転自在に支持された第１の胴と、シート状物を保持する第１のシート保持手段を有し移動する前記第１のシート保持手段が前記第１の圧胴の切欠き部内に入り込むように設けられた無端状の第１の搬送手段とからなり、前記第１の搬送手段によって搬送されるシート状物の一方の面に前記第１の圧胴と前記第１の胴との間で印刷またはコーティングを行う第１の印刷部または第１のコーティング部を有し、回転自在に支持され周面に切欠き部を有する第２の圧胴と、前記第２の圧胴と対向し回転自在に支持された第２の胴と、シート状物を保持する第２のシート保持手段を有し移動する前記第２のシート保持手段が前記第２の圧胴の切欠き部内に入り込むように設けられた無端状の第２の搬送手段とからなり、前記第１の搬送手段から前記第２の搬送手段に受け渡され、前記第２の搬送手段によって搬送されるシート状物の他方の面に前記第２の圧胴と前記第２の胴との間で印刷またはコーティングを行う第２の印刷部または第２のコーティング部とを有し、前記第１の圧胴は、前記第１の胴よりも上側に設けられ、前記第２の圧胴は、第２の胴よりも上側に設けられ、前記第１の印刷部または第１のコーティング部と前記第２の印刷部または第２のコーティング部との間に、印刷またはコーティングされたシート状物を排紙する排紙装置を備えたものである。 In order to achieve this object, the invention according to claim 1 includes a first pressure drum that is rotatably supported and has a notch in the peripheral surface thereof, and is rotatably supported opposite to the first pressure drum. The first cylinder and the first sheet holding means for moving the first sheet holding means for holding the sheet-like material are provided so that the moving first sheet holding means enters the notch portion of the first impression cylinder. And printing or coating is performed between the first impression cylinder and the first cylinder on one surface of the sheet-like material conveyed by the first conveyance means. A second impression cylinder having a first printing part or a first coating part, rotatably supported and having a notch in the peripheral surface, and opposed to the second impression cylinder and rotatably supported The second sheet which has the second drum and the second sheet holding means for holding the sheet-like material and moves. The holding means comprises an endless second conveying means provided so as to enter the notch portion of the second impression cylinder, and is transferred from the first conveying means to the second conveying means. A second printing unit or a second coating unit that performs printing or coating between the second impression cylinder and the second cylinder on the other surface of the sheet-like material conveyed by the second conveying means. The first impression cylinder is provided above the first cylinder, the second impression cylinder is provided above the second cylinder, and the first printing unit Alternatively, a discharge device that discharges a printed or coated sheet-like material is provided between the first coating unit and the second printing unit or the second coating unit .

請求項２に係る発明は、回転自在に支持され周面に切欠き部を有する第１の圧胴と、前記第１の圧胴と対向し回転自在に支持された第１の胴と、シート状物を保持する第１のシート保持手段を有し移動する前記第１のシート保持手段が前記第１の圧胴の切欠き部内に入り込むように設けられた無端状の第１の搬送手段とからなり、前記第１の搬送手段によって搬送されるシート状物の一方の面に前記第１の圧胴と前記第１の胴との間で印刷またはコーティングを行う第１の印刷部または第１のコーティング部を有し、回転自在に支持され周面に切欠き部を有する第２の圧胴と、前記第２の圧胴と対向し回転自在に支持された第２の胴と、シート状物を保持する第２のシート保持手段を有し移動する前記第２のシート保持手段が前記第２の圧胴の切欠き部内に入り込むように設けられた無端状の第２の搬送手段とからなり、前記第１の搬送手段から前記第２の搬送手段に受け渡され前記第２の搬送手段によって搬送されるシート状物の他方の面に前記第２の圧胴と前記第２の胴との間で印刷またはコーティングを行う第２の印刷部または第２のコーティング部を有し、前記第１の圧胴は、前記第１の胴よりも下側に設けられ、前記第２の圧胴は、第２の胴よりも下側に設けられ、前記第１の印刷部または第１のコーティング部と前記第２の印刷部または第２のコーティング部との間に、印刷またはコーティングを行うシート状物を供給するシート供給装置を備えたものである。 According to a second aspect of the present invention, there is provided a first pressure drum that is rotatably supported and has a notch on a peripheral surface thereof, a first drum that is rotatably supported opposite to the first pressure drum, and a sheet. An endless first conveying means provided with a first sheet holding means for holding a shaped article so that the moving first sheet holding means enters into a cutout portion of the first impression cylinder; A first printing unit or a first printing unit that performs printing or coating between the first impression cylinder and the first cylinder on one surface of the sheet-like material conveyed by the first conveyance unit. A second impression cylinder having a coating portion and rotatably supported and having a notch on the peripheral surface; a second cylinder rotatably supported opposite to the second impression cylinder; and a sheet shape The second sheet holding means having the second sheet holding means for holding the object is moved to the second impression cylinder. A sheet having an endless second conveying means provided so as to enter the notch, and is transferred from the first conveying means to the second conveying means and conveyed by the second conveying means A second printing section or a second coating section for performing printing or coating between the second impression cylinder and the second cylinder on the other surface of the object, wherein the first impression cylinder is The second impression cylinder is provided below the second cylinder, and the first printing unit or the first coating unit and the second cylinder are provided below the first cylinder. A sheet supply device for supplying a sheet-like material for printing or coating is provided between the printing unit and the second coating unit .

請求項１または２に係る発明によれば、装置の高さを低くすることができるとともに、
複雑な反転機構が不要なため構造を簡素化することができる。また、紙のサイズに対応し
た煩雑な調整作業が不要になり、かつ表面印刷ユニットと裏面印刷ユニットとを共通化す
ることができるため製造コストの低減を図ることができる。また、くわえ替えの回数を最
小限とすることができるため印刷の精度が向上し、画線が２重になる、いわゆるダブリ等
の印刷不良が防止でき印刷品質が向上する。また、表面印刷を行った後に搬送し裏面印刷
を行うようにしたため、表面印刷の乾燥が促進される。また、装置の全長を短くすることができる。 According to the invention which concerns on Claim 1 or 2 , while being able to make the height of an apparatus low,
Since a complicated reversing mechanism is unnecessary, the structure can be simplified. Further, complicated adjustment work corresponding to the paper size is not necessary, and the front surface printing unit and the back surface printing unit can be used in common, so that the manufacturing cost can be reduced. Further, since the number of holding replacements can be minimized, the printing accuracy is improved, and printing defects such as so-called doubles in which the image lines are doubled can be prevented and the printing quality is improved. Moreover, since it conveyed and performed back surface printing after performing surface printing, drying of surface printing is accelerated | stimulated. Also, the overall length of the device can be shortened.

以下、本発明の実施の形態を図に基づいて説明する。図１は本発明に係る両面印刷機の全体の構成を示すモデル図、図２は同じく要部を拡大して示す正面図、図３は図２におけるIII-III 線断面図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a model diagram showing the overall configuration of a double-sided printing machine according to the present invention, FIG. 2 is a front view showing an enlarged main part, and FIG. 3 is a sectional view taken along line III-III in FIG.

図１に全体を符号１で示す両面印刷機は、シート状物としての紙１０を給紙する給紙装置２と、給紙された紙１０の表面を印刷する表面印刷ユニット３と、裏面を印刷する裏面印刷ユニット４と、両面を印刷された紙を排紙する排紙装置５とによって概略構成されている。給紙装置２において、パイル上に積載された紙１０はサッカー装置（図示せず）によって１枚ずつフィーダボード１１上に送り出され、見当装置によって天地方向と左右方向を揃えられた後、スィング装置１２の爪にくわえられ、スィング装置１２が揺動することにより、後述する第１の搬送手段としての第１の搬送チェーン２３Ａの第１のシート保持手段としての第１の紙くわえ装置２９Ａにくわえ替えられる。   A double-sided printing machine generally indicated by reference numeral 1 in FIG. 1 includes a paper feeding device 2 that feeds a sheet 10 as a sheet, a front surface printing unit 3 that prints the surface of the fed paper 10, and a back surface. A back side printing unit 4 for printing and a paper discharge device 5 for discharging paper on which both sides are printed are schematically configured. In the paper feeding device 2, the paper 10 stacked on the pile is fed one by one onto the feeder board 11 by a soccer device (not shown), and is aligned in the vertical direction and the horizontal direction by the register device, and then the swing device When the swinging device 12 is swung by the 12 claws, the first paper holding device 29A as the first sheet holding means of the first conveying chain 23A as the first conveying means described later is added. Be replaced.

表面印刷ユニット３は１色目の印刷ユニット６と２色目の印刷ユニット７とを備えており、各印刷ユニット６，７には、左右のフレーム１４，１４に回転自在に支持された第１の圧胴１５Ａと、この第１の圧胴１５Ａに互いの周面が対向しフレーム１４，１４に回転自在に支持された第１の胴としての第１のゴム胴１６Ａと、この第１のゴム胴１６Ａに互いの周面が対接しフレーム１４，１４に回転自在に支持された版胴１７Ａとが備えられている。   The front surface printing unit 3 includes a first color printing unit 6 and a second color printing unit 7. Each printing unit 6, 7 has a first pressure supported rotatably on the left and right frames 14, 14. A cylinder 15A, a first rubber cylinder 16A as a first cylinder whose circumferential surfaces are opposed to the first impression cylinder 15A and rotatably supported by the frames 14, 14, and the first rubber cylinder 16A is provided with a plate cylinder 17A whose peripheral surfaces are in contact with each other and rotatably supported by the frames 14,14.

これら第１の圧胴１５Ａおよび第１のゴム胴１６Ａならびに版胴１７Ａの外周の一部には、図２に示すように、軸線方向に延在する切欠き１８Ａ，１９Ａ，２０Ａが設けられており、これら切欠き１８Ａ，１９Ａ，２０Ａは、各胴１５Ａ，１６Ａ，１７Ａが回転することにより、互いに対向するような位相に設けられている。また、この表面印刷ユニット３の第１の圧胴１５Ａと第１のゴム胴１６Ａとの間には、図１に示すように、この第１の圧胴１５Ａと第１のゴム胴１６Ａとの間を後述する第１の搬送手段としての第１の搬送チェーン２３Ａによって紙１０が通過するとき、紙１０の表面を印刷する第１の印刷部２１Ａが設けられている。   As shown in FIG. 2, notches 18A, 19A, and 20A extending in the axial direction are provided on a part of the outer periphery of the first impression cylinder 15A, the first rubber cylinder 16A, and the plate cylinder 17A. The notches 18A, 19A, and 20A are provided in phases that face each other as the cylinders 15A, 16A, and 17A rotate. Further, as shown in FIG. 1, between the first impression cylinder 15A and the first rubber cylinder 16A of the surface printing unit 3, the first impression cylinder 15A and the first rubber cylinder 16A are provided. There is provided a first printing section 21A for printing the surface of the paper 10 when the paper 10 passes by a first conveying chain 23A as a first conveying means to be described later.

第１の搬送チェーン２３Ａは、図３に示すように、ローラ２３ａとリンク２３ｂとによって無端状に形成され、共にフレーム１４，１４に回転自在に支持されたスプロケット２４，２５間に左右一対張架されており、テンション用のスプロケット２６によってテンションが付与されている。スプロケット２４，２５の回転にともなって図１中矢印Ａ方向に走行する左右の第１の搬送チェーン２３Ａ，２３Ａ間には、図２に示すように、爪軸２７と爪台軸２８とからなる複数組の爪竿が、第１の搬送チェーン２３Ａの走行方向に一定の間隔をおいて支架されている。   As shown in FIG. 3, the first transport chain 23A is endlessly formed by a roller 23a and a link 23b, and a pair of left and right tension chains 23b are supported between the sprockets 24 and 25 rotatably supported by the frames 14 and 14, respectively. The tension is applied by the sprocket 26 for tension. As shown in FIG. 2, a claw shaft 27 and a claw base shaft 28 are formed between the left and right first transport chains 23A and 23A that travel in the direction of arrow A in FIG. 1 as the sprockets 24 and 25 rotate. A plurality of sets of hooks are supported at a certain interval in the traveling direction of the first transport chain 23A.

爪軸２７と爪台軸２８上には、図３に示すように、複数個の爪２７ａと爪台２８ａとが互いに対向するようにして軸線方向に並べられて第１のシート保持手段としての第１の紙くわえ装置２９Ａを構成している。この第１の紙くわえ装置２９Ａの爪２７ａは、図示を省略したカム機構によって開閉し、爪台２８ａとの間で紙１０を搬送するように構成され、その搬送始端部において爪２７ａが開閉することにより上述したスィング装置１２のくわえ爪との間で紙のくわえ替えが行われる。また、搬送終端部において爪２７ａが開閉することにより後述した第２の搬送チェーン２３Ｂの紙くわえ装置２９Ｂとの間で紙のくわえ替えが行われる。   On the claw shaft 27 and the claw base shaft 28, as shown in FIG. 3, a plurality of claws 27a and claw bases 28a are arranged in the axial direction so as to face each other and serve as a first sheet holding means. The first paper holding device 29A is configured. The claw 27a of the first paper holding device 29A is configured to be opened and closed by a cam mechanism (not shown) to convey the paper 10 to and from the claw base 28a, and the claw 27a is opened and closed at the conveyance start end. As a result, the paper is exchanged between the above-described gripping claws of the swing device 12. Further, when the claw 27a is opened and closed at the conveyance end portion, the paper is replaced with the paper holding device 29B of the second conveyance chain 23B described later.

図２および図３において、３１，３１は上下のチェーンガイドであって、複数の固定金具３２を介して上下に対向するようにして左右のフレーム１４，１４に固定されている。これら上下のチェーンガイド３１，３１は、第１の搬送チェーン２３Ａのローラ２３ａを挟み、紙くわえ装置２９Ａが印刷ユニット６，７の第１の圧胴１５Ａの切欠き１８Ａ内に入り込むように、左右の第１の搬送チェーン２３Ａ，２３Ａの矢印Ａ方向の走行を案内する。   2 and 3, reference numerals 31 and 31 denote upper and lower chain guides, which are fixed to the left and right frames 14 and 14 so as to face each other with a plurality of fixing brackets 32 therebetween. These upper and lower chain guides 31, 31 sandwich the roller 23 a of the first transport chain 23 A, and the left and right sides of the paper holding device 29 A enter the notch 18 A of the first impression cylinder 15 A of the printing units 6, 7. The travel of the first transport chains 23A, 23A in the direction of arrow A is guided.

裏面印刷ユニット４は１色目の印刷ユニット８と２色目の印刷ユニット９とを備えており、各印刷ユニット８，９には、上述した表面印刷ユニット３の第１の圧胴１５Ａおよび第２のゴム胴１６Ａならびに第１の版胴１７Ａと同じ構造を有する第２の圧胴１５Ｂおよび第２の胴としての第２のゴム胴１６Ｂならびに版胴１７Ｂが備えられている。また、これら第２の圧胴１５Ｂおよび第２のゴム胴１６Ｂならびに版胴１７Ａの外周の一部には、軸線方向に延在する切欠き１８Ｂ，１９Ｂ，２０Ｂが設けられており、これら切欠き１８Ｂ，１９Ｂ，２０Ｂは、各胴１５Ｂ，１６Ｂ，１７Ｂが回転することにより、周方向において互いに対向する位置に設けられている。また、この裏面印刷ユニット４の第１の圧胴１５Ｂと第１のゴム胴１６Ｂとの間には、図１に示すように、この第２の圧胴１５Ｂと第１のゴム胴１６Ｂとの間を後述する第２の搬送手段としての第２の搬送チェーン２３Ｂによって紙１０が通過するとき、紙１０の裏面を印刷する第２の印刷部２１Ｂが設けられている。   The back surface printing unit 4 includes a printing unit 8 for the first color and a printing unit 9 for the second color, and each of the printing units 8 and 9 includes the first impression cylinder 15A and the second pressure cylinder 15A of the front surface printing unit 3 described above. A rubber cylinder 16A, a second impression cylinder 15B having the same structure as the first plate cylinder 17A, a second rubber cylinder 16B as a second cylinder, and a plate cylinder 17B are provided. Further, notches 18B, 19B, and 20B extending in the axial direction are provided on a part of the outer periphery of the second impression cylinder 15B, the second rubber cylinder 16B, and the plate cylinder 17A. 18B, 19B, and 20B are provided at positions facing each other in the circumferential direction as the cylinders 15B, 16B, and 17B rotate. Further, as shown in FIG. 1, between the first impression cylinder 15B and the first rubber cylinder 16B of the back surface printing unit 4, the second impression cylinder 15B and the first rubber cylinder 16B are provided. There is provided a second printing unit 21B that prints the back surface of the paper 10 when the paper 10 passes by a second transport chain 23B as a second transport means to be described later.

第２の搬送チェーン２３Ｂは無端状に形成され、上述した第１の搬送チェーン２３Ａの第１の紙くわえ装置２９Ａと同じ構造を有する第２のシート保持手段としての第２の紙くわえ装置２９Ｂを備えている。この第２の搬送チェーン２３Ｂは、共にフレーム１４，１４に回転自在に支持されたスプロケット３６，３７間に張架されており、テンション用のスプロケット３８によってテンションが付与されている。この第２の搬送チェーン２３Ｂは、第１の搬送チェーン２３Ａと反対方向に走行する。すなわち、第２の搬送チェーン２３Ｂの下部側は、第１の搬送チェーン２３Ａの下部側の走行方向Ａと反対のＢ方向に走行し、上部側はＡ方向に走行する。   The second conveyance chain 23B is formed in an endless shape, and includes a second sheet holding device 29B as a second sheet holding unit having the same structure as the first sheet holding device 29A of the first conveyance chain 23A described above. I have. The second transport chain 23B is stretched between sprockets 36 and 37 that are rotatably supported by the frames 14 and 14, and tension is applied by a sprocket 38 for tension. The second transport chain 23B travels in the opposite direction to the first transport chain 23A. That is, the lower side of the second transport chain 23B travels in the B direction opposite to the travel direction A on the lower side of the first transport chain 23A, and the upper side travels in the A direction.

紙くわえ装置２９Ｂの爪２７ａは、図示を省略したカム機構によって開閉し、爪台２８ａとの間で紙１０を搬送するように構成され、その搬送始端部において爪２７ａが開閉することにより第１の搬送チェーン２３Ａの第１の紙くわえ装置２９Ａとの間で紙のくわえ替えが行われる。また、搬送終端部において爪２７ａが開閉することにより、くわえを解放された紙が排紙装置５の紙積台上に落下する。   The claw 27a of the paper holding device 29B is configured to be opened and closed by a cam mechanism (not shown) to convey the paper 10 to and from the claw base 28a, and the first claw 27a is opened and closed at the conveyance start end. The paper is exchanged with the first paper holding device 29A of the transport chain 23A. Further, when the claw 27 a is opened and closed at the conveyance end portion, the paper whose grip has been released falls on the paper stack of the paper discharge device 5.

上述した表面印刷ユニット３の第１の圧胴１５Ａは、第１のゴム胴１６Ａよりも上側に設けられ、上述した裏面印刷ユニット４の第２の圧胴１５Ｂも、第２のゴム胴１６Ｂよりも上側に設けられている。また、排紙装置５は、表面印刷ユニット３の２色目の印刷ユニット７の第１の印刷部２１Ａと、裏面印刷ユニット４の１色目の印刷ユニット８の第２の印刷部２１Ｂとの間に設けられている。   The above-described first impression cylinder 15A of the front surface printing unit 3 is provided above the first rubber cylinder 16A, and the above-described second impression cylinder 15B of the back surface printing unit 4 is also more than the second rubber cylinder 16B. Is also provided on the upper side. Further, the paper discharge device 5 is provided between the first printing unit 21A of the second color printing unit 7 of the front surface printing unit 3 and the second printing unit 21B of the first color printing unit 8 of the back surface printing unit 4. Is provided.

次に、図１を用いて、このように構成された両面印刷機における印刷動作を説明する。   Next, a printing operation in the double-sided printing machine configured as described above will be described with reference to FIG.

給紙装置２からフィーダボード１１上に送り出された紙１０は、スィング装置１２を介して第１の搬送チェーン２１Ａの紙くわえ装置２９Ａにくわえられ、第１の搬送チェーン２３Ａが矢印Ａ方向に走行することにより、紙１０も矢印Ａ方向に搬送される。第１の搬送チェーン２３Ａの第１の紙くわえ装置２９Ａが、第１の圧胴１５Ａと第１のゴム胴１６Ａとの対向部に位置付けられると、紙くわえ装置２９Ａが圧胴１５Ａの切欠き１８Ａ内に入り込む。   The paper 10 sent out from the paper feeding device 2 onto the feeder board 11 is held by the paper holding device 29A of the first conveying chain 21A via the swing device 12, and the first conveying chain 23A travels in the direction of arrow A. By doing so, the paper 10 is also conveyed in the arrow A direction. When the first paper holding device 29A of the first transport chain 23A is positioned at the opposing portion between the first impression cylinder 15A and the first rubber cylinder 16A, the paper holding device 29A is notched 18A in the impression cylinder 15A. Get inside.

さらに、第１の搬送チェーン２３Ａが矢印Ａ方向に走行することにより、始端を紙くわえ装置２９Ａにくわえられた紙１０が、１色目の印刷ユニット６の第１の圧胴１５Ａと第１のゴム胴１６Ａとの間を通過するので、１色目の印刷ユニット６の第１の印刷部２１Ａによって紙１０の表面に１色目が印刷される。さらに、第１の搬送チェーン２３Ａが矢印Ａ方向に走行し、第１の搬送チェーン２３Ａの第１の紙くわえ装置２９Ａが、第１の圧胴１５Ａと第１のゴム胴１６Ａとの対向部に位置付けられると、紙くわえ装置２９Ａが圧胴１５Ａの切欠き１８Ａ内に入り込む。さらに、第１の搬送チェーン２３Ａが矢印Ａ方向に走行することにより、始端を紙くわえ装置２９Ａにくわえられた紙１０が２色目の印刷ユニット７の第１の圧胴１５Ａと第１のゴム胴１６Ａとの間を通過するので、２色目の印刷ユニット７の第１の印刷部２１Ａによって紙１０の表面に２色目が印刷される。   Further, as the first transport chain 23A travels in the direction of arrow A, the paper 10 with the start end held in the paper holding device 29A is transferred to the first impression cylinder 15A of the first color printing unit 6 and the first rubber. Since it passes between the cylinder 16A, the first color is printed on the surface of the paper 10 by the first printing unit 21A of the printing unit 6 for the first color. Further, the first transport chain 23A travels in the direction of the arrow A, and the first paper holding device 29A of the first transport chain 23A is disposed at the opposing portion between the first impression cylinder 15A and the first rubber cylinder 16A. When positioned, the paper holding device 29A enters the notch 18A of the impression cylinder 15A. Further, as the first transport chain 23A travels in the direction of arrow A, the paper 10 with the starting end held in the paper holding device 29A is transferred to the first impression cylinder 15A and the first rubber cylinder of the second color printing unit 7. 16A, the second color is printed on the surface of the paper 10 by the first printing unit 21A of the printing unit 7 for the second color.

紙１０をくわえた第１の搬送チェーン２３Ａの第１の紙くわえ装置２９Ａが、第２の搬送チェーン２３Ｂに対向すると、第２の搬送チェーン２３Ｂの紙くわえ装置２９Ｂとの間で紙１０のくわえ替えが行われる。第２の搬送チェーン２３Ｂの紙くわえ装置２９Ｂにくわえ替えられた紙１０は、第２の搬送チェーン２３Ｂの矢印Ａ方向の走行によって、紙１０が印刷された表面を上方に指向させた状態で矢印Ａ方向に搬送される。   When the first paper holding device 29A of the first conveying chain 23A holding the paper 10 faces the second conveying chain 23B, the holding of the paper 10 with the paper holding device 29B of the second conveying chain 23B Replacement is performed. The paper 10 that has been replaced by the paper holding device 29B of the second transport chain 23B has an arrow in a state in which the surface on which the paper 10 is printed is directed upward by the travel of the second transport chain 23B in the direction of arrow A. It is conveyed in the A direction.

さらに、第２の搬送チェーン２３Ｂが矢印Ａ方向に走行し、第２の紙くわえ装置２９Ｂがスプロケット３７において１８０°旋回して第２の搬送チェーン２３Ｂによって矢印Ｂ方向に走行すると、紙１０の印刷された表面を下方に指向するように表裏が反転する。したがって、第２の搬送チェーン２３Ｂが矢印Ｂ方向に走行し、第２の搬送チェーン２３Ｂの第２の紙くわえ装置２９Ｂが、１色目の印刷ユニット８の第２の圧胴１５Ｂと第２のゴム胴１６Ｂとの対向部に位置付けられると、紙くわえ装置２９Ｂが圧胴１５Ｂの切欠き１８Ｂ内に入り込む。さらに、第２の搬送チェーン２３Ｂが矢印Ｂ方向に走行することにより、始端を紙くわえ装置２９Ｂにくわえられた紙１０が１色目の印刷ユニット８の第２の圧胴１５Ｂと第２のゴム胴１６Ｂとの間を通過するとき、１色目の印刷ユニット８の第２の印刷部２１Ｂによって紙１０の裏面に１色目が印刷される。   Further, when the second transport chain 23B travels in the direction of arrow A and the second paper holding device 29B rotates 180 ° in the sprocket 37 and travels in the direction of arrow B by the second transport chain 23B, printing of the paper 10 is performed. The front and back are reversed so that the surface is oriented downward. Accordingly, the second transport chain 23B travels in the direction of the arrow B, and the second paper holding device 29B of the second transport chain 23B causes the second impression cylinder 15B of the first color printing unit 8 and the second rubber. When positioned at the portion facing the cylinder 16B, the paper holding device 29B enters the notch 18B of the impression cylinder 15B. Further, the second transport chain 23B travels in the direction of arrow B, so that the paper 10 with the starting end held in the paper holding device 29B becomes the second impression cylinder 15B and the second rubber cylinder of the first color printing unit 8. The first color is printed on the back surface of the paper 10 by the second printing unit 21B of the printing unit 8 for the first color when passing between 16B and 16B.

第２の搬送チェーン２３Ｂが矢印Ｂ方向に走行し、第２の搬送チェーン２３Ｂの第２の紙くわえ装置２９Ｂが、２色目の印刷ユニット９の第２の圧胴１５Ｂと第２のゴム胴１６Ｂとの対向部に位置付けられると、紙くわえ装置２９Ｂが圧胴１５Ｂの切欠き１８Ｂ内に入り込む。さらに、第２の搬送チェーン２３Ｂが矢印Ｂ方向に走行することにより、始端を紙くわえ装置２９Ｂにくわえられた紙１０が２色目の印刷ユニット９の第２の圧胴１５Ｂと第２のゴム胴１６Ｂとの間を通過するとき、２色目の印刷ユニット９の第２の印刷部２１Ｂによって紙１０の裏面に２色目の印刷が行われる。さらに、第２の搬送チェーン２３Ｂが矢印Ｂ方向に走行し、第２の紙くわえ装置２９Ｂが排紙装置５上に位置付けられると、図示を省略したカム機構によって、紙くわえ装置２９Ｂの爪２７ａを開くことにより、くわえを解放された紙が排紙装置５の紙積台上に落下する。   The second transport chain 23B travels in the direction of the arrow B, and the second paper holding device 29B of the second transport chain 23B performs the second impression cylinder 15B and the second rubber cylinder 16B of the printing unit 9 for the second color. Is positioned in the opposite portion of the paper cylinder 29B, the paper holding device 29B enters the notch 18B of the impression cylinder 15B. Further, as the second transport chain 23B travels in the direction of arrow B, the paper 10 with the starting end held in the paper holding device 29B is transferred to the second impression cylinder 15B and the second rubber cylinder of the printing unit 9 for the second color. When passing between the second color printing unit 9 and the second color printing unit 9, the second color printing is performed on the back surface of the paper 10 by the second printing unit 21 </ b> B. Further, when the second transport chain 23B travels in the direction of the arrow B and the second paper holding device 29B is positioned on the paper discharge device 5, the cam mechanism (not shown) causes the pawl 27a of the paper holding device 29B to move. By opening the paper, the paper released from the grip falls on the paper stack of the paper discharge device 5.

このように、表面印刷ユニット３の第１の圧胴１５Ａは第１のゴム胴１６Ａよりも上側に設けられ、かつ裏面印刷ユニット４の第２の圧胴１５Ｂも第２のゴム胴１６Ｂよりも上側に設けられているため、表面印刷ユニット３と裏面印刷ユニット４とを同じ高さとすることができるから、装置の高さを低くすることができる。同時に、表面印刷ユニット３と裏面印刷ユニット４とを共通化することができるから、製造コストの低減を図ることができる。また、紙の反転を第２の搬送チェーン２３Ｂの走行によって行い、複雑な反転機構を不要としたため構造を簡素化することができる。また、紙のサイズに変更があっても紙のサイズに対応した調整作業が一切不要になる。また、くわえ替えの回数を最小限とすることができるため印刷の精度が向上し、画線が２重になる、いわゆるダブリ等の印刷不良が防止でき印刷品質が向上する。また、排出装置５が、表面印刷ユニット３の２色目の印刷ユニット７の第１の印刷部２１Ａと、裏面印刷ユニット４の１色目の印刷ユニット８の第２の印刷部２１Ｂとの間に設けられているため、装置の全長を短くすることができる。   In this way, the first impression cylinder 15A of the front surface printing unit 3 is provided above the first rubber cylinder 16A, and the second impression cylinder 15B of the back surface printing unit 4 is also more than the second rubber cylinder 16B. Since it is provided on the upper side, the front surface printing unit 3 and the back surface printing unit 4 can have the same height, so that the height of the apparatus can be reduced. At the same time, since the front surface printing unit 3 and the back surface printing unit 4 can be shared, the manufacturing cost can be reduced. In addition, the structure can be simplified because the paper is reversed by running the second transport chain 23B, and a complicated reversing mechanism is not required. Further, even if the paper size is changed, no adjustment work corresponding to the paper size is required. Further, since the number of holding replacements can be minimized, the printing accuracy is improved, and printing defects such as so-called doubles in which the image lines are doubled can be prevented and the printing quality is improved. The discharge device 5 is provided between the first printing unit 21A of the second color printing unit 7 of the front surface printing unit 3 and the second printing unit 21B of the first color printing unit 8 of the back surface printing unit 4. Therefore, the overall length of the device can be shortened.

図４は本発明の第２の実施の形態における全体の構成を示すモデル図、図５は要部を拡大して示す正面図である。   FIG. 4 is a model diagram showing the overall configuration of the second embodiment of the present invention, and FIG. 5 is a front view showing an enlarged main part.

この第２の実施の形態の両面印刷機５１が上述した第１の実施の形態と異なる第１の点は、表面印刷ユニット３の第１の圧胴１５Ａが第１のゴム胴１６Ａよりも下側に設けられているとともに、裏面印刷ユニット４の第２の圧胴１５Ｂが第２のゴム胴１６Ｂよりも下側に設けられている点にある。また、第２の異なる点は、給紙装置２が表面印刷ユニット３の１色目の印刷ユニット６の第１の印刷部２１Ａと、裏面印刷ユニット４の１色目の印刷ユニット８の第２の印刷部２１Ｂとの間に設けられている点にある。   The first point that the duplex printing machine 51 of the second embodiment differs from the first embodiment described above is that the first impression cylinder 15A of the front surface printing unit 3 is lower than the first rubber cylinder 16A. The second impression cylinder 15B of the back surface printing unit 4 is provided below the second rubber cylinder 16B. Further, the second difference is that the paper feeding device 2 has the first printing unit 21A of the first color printing unit 6 of the front surface printing unit 3 and the second printing of the first color printing unit 8 of the back surface printing unit 4. It exists in the point provided between the parts 21B.

すなわち、表面印刷ユニット３の１色目の印刷ユニット６が２色目の印刷ユニット７よりも矢印Ａ方向、すなわち排紙装置５側に位置付けられ、給紙装置２が表面印刷ユニット３の１色目の印刷ユニット６よりも矢印Ａ方向、すなわち排紙装置５側に位置付けられている。また、第１の搬送チェーン２３Ａは、スプロケット２５と、表面印刷ユニット３の２色目の印刷ユニット７の第１の圧胴１５Ａの外周と略同じ曲率によって湾曲形成されたチェーンガイド３１との間に張架されている。４０は排紙チェーンであって、スプロケット４１とスプロケット４２との間に張架されており、図示を省略した排紙爪が設けられている。   That is, the first color printing unit 6 of the front surface printing unit 3 is positioned in the direction of the arrow A, that is, on the side of the paper discharge device 5 relative to the second color printing unit 7, and the paper feeding device 2 It is positioned in the direction of arrow A from the unit 6, that is, in the paper discharge device 5 side. The first transport chain 23A is between the sprocket 25 and a chain guide 31 that is curved and formed with substantially the same curvature as the outer periphery of the first impression cylinder 15A of the second color printing unit 7 of the front surface printing unit 3. It is stretched. A paper discharge chain 40 is stretched between the sprocket 41 and the sprocket 42, and is provided with a paper discharge claw (not shown).

このように構成されていることにより、給紙装置２からフィーダボード１１上に送り出された紙１０はスィング装置１２のくわえ爪から、第１の搬送チェーン２３Ａの上部側で矢印Ｂ方向に走行するくわえ爪装置２９Ａにくわえ替えられる。第１の搬送チェーン２３Ａが矢印Ｂ方向に走行し、第１の搬送チェーン２３Ａの第１の紙くわえ装置２９Ａが、１色目の印刷ユニット６の第１の圧胴１５Ａと第１のゴム胴１６Ａとの対向部に位置付けられると、紙くわえ装置２９Ａが圧胴１５Ａの切欠き１８Ａ内に入り込む。さらに、第１の搬送チェーン２３Ａが矢印Ｂ方向に走行することにより、始端を紙くわえ装置２９Ａにくわえられた紙１０が１色目の印刷ユニット６の第１の圧胴１５Ａと第１のゴム胴１６Ａとの間を通過するとき、１色目の印刷ユニット６の第１の印刷部２１Ａによって紙１０の表面に１色目が印刷される。   With this configuration, the paper 10 fed from the paper feeder 2 onto the feeder board 11 travels in the direction of arrow B on the upper side of the first transport chain 23A from the gripping claw of the swing device 12. It can be replaced by the gripper device 29A. The first transport chain 23A travels in the direction of the arrow B, and the first paper holding device 29A of the first transport chain 23A performs the first impression cylinder 15A and the first rubber cylinder 16A of the printing unit 6 for the first color. The paper holding device 29A enters the notch 18A of the impression cylinder 15A. Further, as the first transport chain 23A travels in the direction of arrow B, the first impression cylinder 15A and the first rubber cylinder of the printing unit 6 of the first color are fed to the paper 10 with the starting end held in the paper holding device 29A. The first color is printed on the surface of the paper 10 by the first printing unit 21 </ b> A of the first color printing unit 6 when passing between the first color printing unit 6 and the first color printing unit 6.

さらに、第１の搬送チェーン２３Ａが矢印Ｂ方向に走行し、第１の搬送チェーン２３Ａの第１の紙くわえ装置２９Ａが、２色目の印刷ユニット７の第１の圧胴１５Ａと第１のゴム胴１６Ａとの対向部に位置付けられると、紙くわえ装置２９Ａが圧胴１５Ａの切欠き１８Ａ内に入り込む。さらに、第１の搬送チェーン２３Ａが矢印Ｂ方向に走行することにより、始端を紙くわえ装置２９Ａにくわえられた紙１０が２色目の印刷ユニット７の第１の圧胴１５Ａと第１のゴム胴１６Ａとの間を通過するとき、２色目の印刷ユニット７の第１の印刷部２１Ａによって紙１０の表面に２色目が印刷される。   Further, the first transport chain 23A travels in the direction of the arrow B, and the first paper holding device 29A of the first transport chain 23A receives the first impression cylinder 15A of the second color printing unit 7 and the first rubber. When positioned at the portion facing the cylinder 16A, the paper holding device 29A enters the notch 18A of the impression cylinder 15A. Further, the first conveying chain 23A travels in the direction of arrow B, so that the paper 10 with the starting end held in the paper holding device 29A becomes the first impression cylinder 15A and the first rubber cylinder of the second color printing unit 7. The second color is printed on the surface of the paper 10 by the first printing unit 21 </ b> A of the second color printing unit 7 when passing between the first color printing unit 7 and the second color printing unit 7.

表面に２色が印刷された紙１０は、２色目の印刷ユニット７の第１の圧胴１５Ａの周りを旋回することにより表裏が反転し、第１の搬送チェーン２３Ａによって矢印Ａ方向へ搬送される。紙１０をくわえた第１の搬送チェーン２３Ａの第１の紙くわえ装置２９Ａが、第２の搬送チェーン２３Ｂに対向すると、第２の搬送チェーン２３Ｂの紙くわえ装置２９Ｂとの間で紙１０のくわえ替えが行われる。第２の搬送チェーン２３Ｂの紙くわえ装置２９Ｂにくわえ替えられた紙１０は、第２の搬送チェーン２３Ｂの矢印Ａ方向の走行によって、紙１０が印刷された表面を下方に指向させた状態で矢印Ａ方向に搬送される。   The paper 10 having the two colors printed on the front surface is turned around the first impression cylinder 15A of the printing unit 7 for the second color, so that the front and back are reversed and conveyed in the direction of arrow A by the first conveying chain 23A. The When the first paper holding device 29A of the first conveying chain 23A holding the paper 10 faces the second conveying chain 23B, the holding of the paper 10 with the paper holding device 29B of the second conveying chain 23B Replacement is performed. The paper 10 that has been replaced by the paper holding device 29B of the second transport chain 23B has an arrow in a state where the surface on which the paper 10 is printed is directed downward by the travel of the second transport chain 23B in the direction of arrow A. It is conveyed in the A direction.

さらに、第２の搬送チェーン２３Ｂが矢印Ａ方向に走行し、第２の搬送チェーン２３Ｂの第２の紙くわえ装置２９Ｂが、１色目の印刷ユニット８の第２の圧胴１５Ｂと第２のゴム胴１６Ｂとの対向部に位置付けられると、紙くわえ装置２９Ｂが圧胴１５Ｂの切欠き１８Ｂ内に入り込む。さらに、第２の搬送チェーン２３Ｂが矢印Ｂ方向に走行することにより、始端を紙くわえ装置２９Ｂにくわえられた紙１０が１色目の印刷ユニット８の第２の圧胴１５Ｂと第２のゴム胴１６Ｂとの間を通過するとき、１色目の印刷ユニット８の第２の印刷部２１Ｂによって紙１０の裏面に１色目が印刷される。   Further, the second transport chain 23B travels in the direction of arrow A, and the second paper holding device 29B of the second transport chain 23B performs the second impression cylinder 15B of the first color printing unit 8 and the second rubber. When positioned at the portion facing the cylinder 16B, the paper holding device 29B enters the notch 18B of the impression cylinder 15B. Further, the second transport chain 23B travels in the direction of arrow B, so that the paper 10 with the starting end held in the paper holding device 29B becomes the second impression cylinder 15B and the second rubber cylinder of the first color printing unit 8. The first color is printed on the back surface of the paper 10 by the second printing unit 21B of the printing unit 8 for the first color when passing between 16B and 16B.

さらに、第２の搬送チェーン２３Ｂが矢印Ａ方向に走行し、第２の搬送チェーン２３Ｂの第２の紙くわえ装置２９Ｂが、２色目の印刷ユニット９の第２の圧胴１５Ｂと第２のゴム胴１６Ｂとの対向部に位置付けられると、紙くわえ装置２９Ｂが圧胴１５Ｂの切欠き１８Ｂ内に入り込む。さらに、第２の搬送チェーン２３Ｂが矢印Ｂ方向に走行することにより、始端を紙くわえ装置２９Ｂにくわえられた紙１０が２色目の印刷ユニット９の第２の圧胴１５Ｂと第２のゴム胴１６Ｂとの間を通過するとき、２色目の印刷ユニット９の第２の印刷部２１Ｂによって紙１０の裏面に２色目が印刷される。さらに、第２の搬送チェーン２３Ｂが矢印Ａ方向に走行し、第２の紙くわえ装置２９Ｂが排紙チェーン４０のくわえ爪に対向すると、紙のくわえ替えが行われ、紙１０は排紙チェーン４０の排紙爪にくわえられる。排紙チェーン４０が矢印Ｃ方向へ走行し、排紙チェーン４０の排紙爪が排紙装置５上に位置付けられると、図示を省略したカム機構によって、排紙爪が開くことにより、くわえを解放された紙が排紙装置５の紙積台上に落下する。   Further, the second transport chain 23B travels in the direction of arrow A, and the second paper holding device 29B of the second transport chain 23B performs the second impression cylinder 15B of the second color printing unit 9 and the second rubber. When positioned at the portion facing the cylinder 16B, the paper holding device 29B enters the notch 18B of the impression cylinder 15B. Further, as the second transport chain 23B travels in the direction of arrow B, the paper 10 with the starting end held in the paper holding device 29B is transferred to the second impression cylinder 15B and the second rubber cylinder of the printing unit 9 for the second color. The second color is printed on the back surface of the paper 10 by the second printing unit 21B of the printing unit 9 for the second color when passing between the second color printing unit 9 and the paper 16B. Further, when the second transport chain 23B travels in the direction of the arrow A and the second paper holding device 29B faces the holding claw of the paper discharge chain 40, the paper is replaced and the paper 10 is supplied to the paper discharge chain 40. It is added to the paper discharge claw. When the paper discharge chain 40 travels in the direction of arrow C and the paper discharge claw of the paper discharge chain 40 is positioned on the paper discharge device 5, the gripper is released by opening the paper discharge claw by a cam mechanism (not shown). The dropped paper falls onto the paper stack of the paper discharge device 5.

このように、表面印刷ユニット３の第１の圧胴１５Ａは第１のゴム胴１６Ａよりも下側に設けられ、かつ裏面印刷ユニット４の第２の圧胴１５Ｂも第２のゴム胴１６Ｂよりも下側に設けられているため、表面印刷ユニット３と裏面印刷ユニット４とを同じ高さとすることができるから、装置の高さを低くすることができる。同時に、表面印刷ユニット３と裏面印刷ユニット４とを共通化することができるから、製造コストの低減を図ることができる。また、紙の反転を第１の搬送チェーン２３Ａの走行によって行い、複雑な反転機構を不要としため構造を簡素化することができる。また、紙のサイズに変更があっても紙のサイズに対応した調整作業がいっさい不要になる。また、くわえ替えの回数を最小限とすることができるため印刷の精度が向上し、画線が２重になる、いわゆるダブリ等の印刷不良が防止でき印刷品質が向上する。また、給紙装置２が表面印刷ユニット３の１色目の印刷ユニット６の第１の印刷部２１Ａと裏面印刷ユニット４の１色目の印刷ユニット８の第２の印刷部２１Ｂとの間に設けられているから装置の全長を短くすることができる。また、表面印刷を行った後に搬送し裏面印刷を行うようにしたため、表面印刷の乾燥が促進される。   In this way, the first impression cylinder 15A of the front surface printing unit 3 is provided below the first rubber cylinder 16A, and the second impression cylinder 15B of the back surface printing unit 4 is also more than the second rubber cylinder 16B. Since the front surface printing unit 3 and the back surface printing unit 4 can have the same height, the height of the apparatus can be reduced. At the same time, since the front surface printing unit 3 and the back surface printing unit 4 can be shared, the manufacturing cost can be reduced. Further, the paper can be reversed by running the first transport chain 23A, and a complicated reversing mechanism is not required, so that the structure can be simplified. Further, even if the paper size is changed, no adjustment work corresponding to the paper size is required. Further, since the number of holding replacements can be minimized, the printing accuracy is improved, and printing defects such as so-called doubles in which the image lines are doubled can be prevented and the printing quality is improved. Further, the paper feeding device 2 is provided between the first printing unit 21A of the first color printing unit 6 of the front surface printing unit 3 and the second printing unit 21B of the first color printing unit 8 of the back surface printing unit 4. Therefore, the overall length of the device can be shortened. Moreover, since it conveyed and performed back surface printing after performing surface printing, drying of surface printing is accelerated | stimulated.

なお、本実施の形態においては、圧胴１５Ａ，１５Ｂとゴム胴１６Ａ，１６Ｂとの間に印刷部を設けたが、版胴１７Ａ，１７Ｂの替わりにニス付けローラを設け、これに対接するゴム胴１６Ａ，１６Ｂにニスを供給し、ゴム胴１６Ａ，１６Ｂと圧胴１５Ａ，１５Ｂとの間に、紙にニスをコーティングするコーティング部を備え紙の両面にニスをコーティングするコーティング装置にも適用できる。また、本実施の形態においては、スィング装置１２の爪から直接第１の搬送チェーン２３Ａの紙くわえ装置２９Ａに紙のくわえ替えを行ったが、スィング装置１２の揺動態様、すなわちスィング装置１２の揺動支点を下方から上方に変えたい場合には、スィング装置１２と第１の搬送チェーン２３Ａとの間に渡し胴を設け、渡し胴を介して紙のくわえ替えを行うようにしてもよい。また、スプロケット２４を設けることなく、チェーンガイド３１により第１の搬送チェーン２３Ａを、１色目の印刷ユニット６の第１の圧胴１５Ａの周りを旋回させるようにしてもよく、その場合にはスプロケット２４が不要になる。また、シート状物は紙１０だけではなく、フィルム状のシートやフィルム等でもよい。また、紙１０を搬送している間に、乾燥をより促進させるために、搬送の範囲内に乾燥装置を設けるようにしてもよい。また、本実施の形態においては、圧胴に対向する胴としてゴム胴としたが胴としての版胴でもよい。また、本実施の形態においてはインキ壷装置内に溜められたインキを、インキローラ群を介して印刷する例を説明したが、インキを吐出するインキジェット装置からインキローラ群に供給されたインキを用いて印刷するようにしてもよい。   In this embodiment, the printing unit is provided between the impression cylinders 15A and 15B and the rubber cylinders 16A and 16B. However, a varnishing roller is provided instead of the plate cylinders 17A and 17B, and the rubber is in contact therewith. The varnish is supplied to the cylinders 16A and 16B, and a coating unit for coating varnish on the paper is provided between the rubber cylinders 16A and 16B and the impression cylinders 15A and 15B. . In the present embodiment, the paper holding device 29A of the first transport chain 23A is directly replaced by the nail of the swinging device 12, but the swinging mode of the swinging device 12, that is, the swinging device 12 When the swing fulcrum is to be changed from the lower side to the upper side, a transfer cylinder may be provided between the swing device 12 and the first transport chain 23A, and the paper may be replaced through the transfer cylinder. Further, without providing the sprocket 24, the first conveying chain 23A may be swung around the first impression cylinder 15A of the first color printing unit 6 by the chain guide 31. 24 becomes unnecessary. Further, the sheet-like material may be not only the paper 10 but also a film-like sheet or film. Further, in order to further promote drying while the paper 10 is being transported, a drying device may be provided within the transport range. In the present embodiment, a rubber cylinder is used as the cylinder facing the impression cylinder, but a plate cylinder as a cylinder may be used. In the present embodiment, the example in which the ink stored in the ink fountain device is printed through the ink roller group has been described. However, the ink supplied to the ink roller group from the ink jet device that discharges ink is used. May be used for printing.

本発明に係る両面印刷機の全体の構成を示すモデル図である。1 is a model diagram showing an overall configuration of a double-sided printing machine according to the present invention. 本発明に係る両面印刷機の要部を拡大して示す正面図である。It is a front view which expands and shows the principal part of the double-sided printing machine which concerns on this invention. 図２におけるIII-III 線断面図である。It is the III-III sectional view taken on the line in FIG. 本発明の第２の実施の形態における全体の構成を示すモデル図である。It is a model figure which shows the whole structure in the 2nd Embodiment of this invention. 本発明の第２の実施の形態の要部を拡大して示す正面図である。It is a front view which expands and shows the principal part of the 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１，５１…両面印刷機、２…紙供給装置、３…表面印刷ユニット、４…裏面印刷ユニット、５…紙排出装置、１０…紙（シート状物）、１５Ａ…第１の圧胴、１５Ｂ…第２の圧胴、１６Ａ…第１のゴム胴（第１の胴）、１６Ｂ…第２のゴム胴（第２の胴）、１７Ａ…第１の版胴、１７Ｂ…第２の版胴、２３Ａ…第１の搬送チェーン（第１の搬送手段）、２３Ｂ…第２の搬送チェーン（第２の搬送手段）、２９Ａ…第１の紙くわえ装置（第１のシート保持手段）、２９Ｂ…第２の紙くわえ装置（第２のシート保持手段）、４０…排紙チェーン。
DESCRIPTION OF SYMBOLS 1,51 ... Double-sided printing machine, 2 ... Paper supply apparatus, 3 ... Front surface printing unit, 4 ... Back surface printing unit, 5 ... Paper discharge device, 10 ... Paper (sheet-like material), 15A ... 1st impression cylinder, 15B 2nd impression cylinder, 16A ... 1st rubber cylinder (1st cylinder), 16B ... 2nd rubber cylinder (2nd cylinder), 17A ... 1st printing cylinder, 17B ... 2nd printing cylinder , 23A: first transport chain (first transport means), 23B: second transport chain (second transport means), 29A ... first paper holding device (first sheet holding means), 29B ... Second paper holding device (second sheet holding means), 40.

Claims (2)

回転自在に支持され周面に切欠き部を有する第１の圧胴と、
前記第１の圧胴と対向し回転自在に支持された第１の胴と、
シート状物を保持する第１のシート保持手段を有し移動する前記第１のシート保持手段が前記第１の圧胴の切欠き部内に入り込むように設けられた無端状の第１の搬送手段とからなり、
前記第１の搬送手段によって搬送されるシート状物の一方の面に前記第１の圧胴と前記第１の胴との間で印刷またはコーティングを行う第１の印刷部または第１のコーティング部を有し、
回転自在に支持され周面に切欠き部を有する第２の圧胴と、
前記第２の圧胴と対向し回転自在に支持された第２の胴と、
シート状物を保持する第２のシート保持手段を有し移動する前記第２のシート保持手段が前記第２の圧胴の切欠き部内に入り込むように設けられた無端状の第２の搬送手段とからなり、
前記第１の搬送手段から前記第２の搬送手段に受け渡され、前記第２の搬送手段によって搬送されるシート状物の他方の面に前記第２の圧胴と前記第２の胴との間で印刷またはコーティングを行う第２の印刷部または第２のコーティング部とを有し、
前記第１の圧胴は、前記第１の胴よりも上側に設けられ、前記第２の圧胴は、第２の胴よりも上側に設けられ、
前記第１の印刷部または第１のコーティング部と前記第２の印刷部または第２のコーティング部との間に、印刷またはコーティングされたシート状物を排紙する排紙装置を備えたことを特徴とする両面印刷機または両面コーティング装置。 A first impression cylinder that is rotatably supported and has a notch in the peripheral surface;
A first cylinder rotatably opposed to the first impression cylinder;
Endless first conveying means provided with first sheet holding means for holding the sheet-like material and provided so that the moving first sheet holding means enters the notch portion of the first impression cylinder And consist of
A first printing unit or a first coating unit that performs printing or coating between the first impression cylinder and the first cylinder on one surface of the sheet-like material conveyed by the first conveyance unit. Have
A second impression cylinder that is rotatably supported and has a notch in the peripheral surface;
A second cylinder that is rotatably supported opposite to the second impression cylinder;
Endless second conveying means provided with second sheet holding means for holding the sheet-like material so that the moving second sheet holding means enters the notch portion of the second impression cylinder. And consist of
The second impression cylinder and the second cylinder are transferred to the other surface of the sheet-like material that is transferred from the first conveyance means to the second conveyance means and conveyed by the second conveyance means. A second printing section or a second coating section that performs printing or coating between the two,
The first impression cylinder is provided above the first cylinder, the second impression cylinder is provided above the second cylinder,
A paper discharge device for discharging the printed or coated sheet-like material is provided between the first printing unit or the first coating unit and the second printing unit or the second coating unit. Characteristic double-sided printing machine or double-sided coating device. 回転自在に支持され周面に切欠き部を有する第１の圧胴と、A first impression cylinder that is rotatably supported and has a notch in the peripheral surface;
前記第１の圧胴と対向し回転自在に支持された第１の胴と、  A first cylinder rotatably opposed to the first impression cylinder;
シート状物を保持する第１のシート保持手段を有し移動する前記第１のシート保持手段が前記第１の圧胴の切欠き部内に入り込むように設けられた無端状の第１の搬送手段とからなり、  Endless first conveying means provided with first sheet holding means for holding the sheet-like material and provided so that the moving first sheet holding means enters the notch portion of the first impression cylinder And consist of
前記第１の搬送手段によって搬送されるシート状物の一方の面に前記第１の圧胴と前記第１の胴との間で印刷またはコーティングを行う第１の印刷部または第１のコーティング部を有し、  A first printing unit or a first coating unit that performs printing or coating between the first impression cylinder and the first cylinder on one surface of the sheet-like material conveyed by the first conveyance unit. Have
回転自在に支持され周面に切欠き部を有する第２の圧胴と、  A second impression cylinder that is rotatably supported and has a notch in the peripheral surface;
前記第２の圧胴と対向し回転自在に支持された第２の胴と、  A second cylinder that is rotatably supported opposite to the second impression cylinder;
シート状物を保持する第２のシート保持手段を有し移動する前記第２のシート保持手段が前記第２の圧胴の切欠き部内に入り込むように設けられた無端状の第２の搬送手段とからなり、  Endless second conveying means provided with second sheet holding means for holding the sheet-like material so that the moving second sheet holding means enters the notch portion of the second impression cylinder. And consist of
前記第１の搬送手段から前記第２の搬送手段に受け渡され前記第２の搬送手段によって搬送されるシート状物の他方の面に前記第２の圧胴と前記第２の胴との間で印刷またはコーティングを行う第２の印刷部または第２のコーティング部を有し、  Between the second impression cylinder and the second cylinder on the other surface of the sheet-like material transferred from the first conveyance means to the second conveyance means and conveyed by the second conveyance means. A second printing section or a second coating section for printing or coating at
前記第１の圧胴は、前記第１の胴よりも下側に設けられ、前記第２の圧胴は、第２の胴よりも下側に設けられ、  The first impression cylinder is provided below the first cylinder, and the second impression cylinder is provided below the second cylinder,
前記第１の印刷部または第１のコーティング部と前記第２の印刷部または第２のコーティング部との間に、印刷またはコーティングを行うシート状物を供給するシート供給装置を備えたことを特徴とする両面印刷機または両面コーティング装置。  A sheet supply device for supplying a sheet-like material to be printed or coated is provided between the first printing unit or the first coating unit and the second printing unit or the second coating unit. And double-sided printing machine or double-sided coating device.
JP2004041242A 2004-02-18 2004-02-18 Double-sided printing machine or double-sided coating device Expired - Fee Related JP4495482B2 (en)

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EP1995062A1 (en) * 2007-05-25 2008-11-26 Kba-Giori S.A. Intaglio printing press systems for recto-verso intaglio-printing of sheets, in particular for the production of banknotes and the like securities
JP2014210438A (en) * 2014-06-27 2014-11-13 株式会社小森コーポレーション Sheet printer

Citations (1)

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Publication number Priority date Publication date Assignee Title
JPH0939202A (en) * 1995-07-26 1997-02-10 Heidelberger Druckmas Ag Printing machine and turning-over device used in said printing machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0939202A (en) * 1995-07-26 1997-02-10 Heidelberger Druckmas Ag Printing machine and turning-over device used in said printing machine

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