JP2021011065A - Gravure rotary printing machine - Google Patents

Gravure rotary printing machine Download PDF

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JP2021011065A
JP2021011065A JP2019126072A JP2019126072A JP2021011065A JP 2021011065 A JP2021011065 A JP 2021011065A JP 2019126072 A JP2019126072 A JP 2019126072A JP 2019126072 A JP2019126072 A JP 2019126072A JP 2021011065 A JP2021011065 A JP 2021011065A
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ink
finisher roll
rotary printing
roll
plate cylinder
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JP7306114B2 (en
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憲司 米田
Kenji Yoneda
憲司 米田
健一 井田
Kenichi Ida
健一 井田
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Toppan Inc
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Toppan Printing Co Ltd
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Abstract

To provide a gravure rotary printing machine comprising a furnisher roll contacting a plate cylinder, which can suppress ink from scattering to an end face of the plate cylinder and an axis of the furnisher roll.SOLUTION: In a gravure rotary printing machine, a furnisher roll is constituted of a columnar part at a center part and a truncated cone-shape part at a side part. In the truncated cone-shape part at the side part, a small-diameter surface becomes an end part of the furnisher roll and a large diameter part contacts the columnar part at the center part of the furnisher roll. The diameter of the large diameter surface is equal to the diameter of the columnar part at the center part of the furnisher roll. In a direction of an axis of the furnisher roll, an end part of a plate cylinder is positioned at the truncated cone-shape part at the side part of the furnisher roll.SELECTED DRAWING: Figure 1

Description

版胴に接触したファニッシャーロールを備えたグラビア輪転印刷機に関する。 The present invention relates to a gravure rotary printing press equipped with a finisher roll in contact with a plate cylinder.

従来、グラビア輪転印刷機は、図４で示される印刷ユニットを有しており、その中で版胴とファニッシャーロールは図３（（ａ）は斜視図、（ｂ）は上面図）で示されるような構成であり、図４、３で模式的に示されるように、グラビア輪転印刷機の印刷は、以下の工程により、行われる。
（Ｐ１）インキパン４のインキ５に一部浸漬されたファニッシャーロール９１が回転して版胴２へインキ５を供給する。
（Ｐ２）供給されたインキ５は版胴２とファニッシャーロール９１の接触部分にインキ溜まり７を形成する。
（Ｐ３）インキ５が版胴２の絵柄部に入る。
（Ｐ４）ドクター２０で余分なインキ５を落とす。
（Ｐ５）圧胴ロール１０と版胴２でニップし、印刷基材３０へインキ５を転写する。
（Ｐ６）（Ｐ２）での版胴２とファニッシャーロール９１の接触部分に溜まったインキ溜まり７のインキは両端に向かって流れ落ちる。その際、版胴端面５１とファニッシャーロール軸９２にインキ５が飛散付着し、生産終了後の清掃に時間を多く要するという問題が発生した。 Conventionally, a gravure rotary printing press has a printing unit shown in FIG. 4, in which a plate cylinder and a finisher roll are shown in FIG. 3 ((a) is a perspective view and (b) is a top view). The configuration is as shown, and as is schematically shown in FIGS. 4 and 3, printing of the gravure rotary printing press is performed by the following steps.
(P1) The finisher roll 91 partially immersed in the ink 5 of the ink pan 4 rotates to supply the ink 5 to the plate cylinder 2.
(P2) The supplied ink 5 forms an ink sump 7 at the contact portion between the plate cylinder 2 and the finisher roll 91.
(P3) Ink 5 enters the pattern portion of the plate cylinder 2.
(P4) The doctor 20 removes the excess ink 5.
(P5) Nip the impression cylinder roll 10 and the plate cylinder 2 to transfer the ink 5 to the printing substrate 30.
(P6) The ink in the ink sump 7 accumulated in the contact portion between the plate cylinder 2 and the finisher roll 91 in (P2) flows down toward both ends. At that time, there was a problem that the ink 5 was scattered and adhered to the plate body end surface 51 and the finisher roll shaft 92, and it took a long time to clean after the end of production.

そこで、問題の対策の１つとして、版胴２とファニッシャーロール９１の接触部分の側面にインキカバーを取り付けることが考えられる。インキカバーにより、版胴２とファニッシャーロール９１との接触部両端部からのインキ飛び散りは防止できるもの、インキカバーによるインキ跳ね返りと、飛散による版胴２の版面や端部、軸部の汚染を生じ、印刷物にも汚染の影響がある場合もあった。 Therefore, as one of the countermeasures against the problem, it is conceivable to attach an ink cover to the side surface of the contact portion between the plate cylinder 2 and the finisher roll 91. The ink cover can prevent ink from splashing from both ends of the contact area between the plate cylinder 2 and the finisher roll 91, ink splashes from the ink cover, and contamination of the plate surface, edges, and shaft of the plate cylinder 2 due to scattering. In some cases, the printed matter was also affected by contamination.

また、問題の対策の１つとして、ファニッシャーロールの両端に、版胴の版面両端の端部に、対向するファニッシャーロールの外径よりも小さい径の円筒部を設け、その円筒部表面に円周方向に延びる溝を形成し、軸方向において、円筒部に、版胴の端面が位置する構成が、考えられる（特許文献１参照）。インキは、高速回転する版胴とファニッシャーロールによって、小さい径の円筒部を伝わり、版胴やファニッシャーロールの両端側面や、それらの軸に達し、高速回転によりインキ跳ねが生じ、周辺を汚染し、印刷物にも汚染する場合もあった。 In addition, as one of the countermeasures against the problem, a cylindrical portion having a diameter smaller than the outer diameter of the facing furnisher roll is provided at both ends of the finisher roll at both ends of the plate surface of the plate cylinder, and the cylindrical portion is provided. It is conceivable that a groove extending in the circumferential direction is formed on the surface, and the end surface of the plate cylinder is located on the cylindrical portion in the axial direction (see Patent Document 1). The ink travels through the small-diameter cylindrical part by the plate cylinder and finisher roll that rotate at high speed, reaches both end sides of the plate cylinder and finisher roll, and their axes, and the ink splashes due to high-speed rotation, and the periphery In some cases, it contaminates the printed matter.

また、問題の対策の１つとして、ファニッシャーロールの最上部近傍を通り、ファニッシャーロールと版胴との接線端よりも下方を通る、斜め下向きの所定の幅を持った板状のインキ受け冶具を、ファニッシャーロールの両端面に接するように設けている構成が考えられる（特許文献２参照）。インキは、高速回転する版胴とファニッシャーロールによって、インキ受け冶具に伝わり、周辺を汚染し、印刷物にも汚染する場合もあった。 In addition, as one of the countermeasures for the problem, a plate-shaped plate having a predetermined width diagonally downward, passing near the uppermost portion of the finisher roll and passing below the tangential end between the finisher roll and the plate cylinder. It is conceivable that the ink receiving jig is provided so as to be in contact with both end surfaces of the finisher roll (see Patent Document 2). The ink was transmitted to the ink receiving jig by the plate cylinder and the finisher roll rotating at high speed, contaminating the surrounding area, and sometimes contaminating the printed matter.

特許３８５５５４８号公報Japanese Patent No. 385548 特開２００５−４１１７５号公報Japanese Unexamined Patent Publication No. 2005-41175

版胴に接触したファニッシャーロールを備えたグラビア輪転印刷機において、版胴の端面やファニッシャーロール軸へのインキ飛散を抑制するグラビア輪転印刷機を提供することを目的とする。 An object of the present invention is to provide a gravure rotary printing press provided with a finisher roll in contact with a plate cylinder, which suppresses ink scattering on the end face of the plate cylinder and the finisher roll shaft.

本発明は上記課題を解決するためになされたもので、本発明の請求項１に係る発明は、回転するグラビア版胴と、それに接するように設けられたファニッシャーロールと、このファニッシャーロールへインキを供給するインキ供給装置を有するグラビア輪転印刷機において、前記ファニッシャーロールは中央部に円柱状部分と側部に円錐台状部分から構成され、この側部の円錐台状部分は、小径面がファニッシャーロール端部になり、大径面がファニッシャーロール中央部の円柱状部分に接し、大径面の径がファニッシャーロール中央部の円柱状部分の径と同じであり、ファニッシャーロール軸方向において、ファニッシャーロール側部の円錐台状部分に前記版胴端部を位置することを特徴とするグラビア輪転印刷機である。 The present invention has been made to solve the above problems, and the invention according to claim 1 of the present invention includes a rotating gravure plate cylinder, a finisher roll provided in contact with the rotating gravure plate cylinder, and the finisher. In a gravure rotary printing press having an ink supply device that supplies ink to a roll, the finisher roll is composed of a columnar portion in the center and a truncated cone-shaped portion on the side, and the truncated cone-shaped portion on the side thereof is formed. , The small diameter surface becomes the end of the finisher roll, the large diameter surface contacts the columnar part in the center of the finisher roll, and the diameter of the large diameter surface is the same as the diameter of the columnar part in the center of the finisher roll. The gravure rotary printing press is characterized in that the plate barrel end portion is located at the truncated cone-shaped portion on the side of the finisher roll in the axial direction of the finisher roll.

本発明の請求項２に係る発明は、前記インキ供給装置が、インキ供給ノズルと、インキパンを有し、インキ供給ノズルでインキ供給したインキパンのインキに、前記ファニッシャーロールの一部が浸漬していることを特徴とする請求項１に記載のグラビア輪転印刷機である。 In the invention according to claim 2 of the present invention, the ink supply device has an ink supply nozzle and an ink pan, and a part of the finisher roll is immersed in the ink of the ink pan supplied with the ink by the ink supply nozzle. The gravure rotary printing press according to claim 1, wherein the gravure rotary printing press is characterized by the above.

本発明の請求項３に係る発明は、前記インキ供給装置が、着けローラを有し、インキが前記着けローラを介し、前記ファニッシャーロールに供給されることを特徴とする請求項１に記載のグラビア輪転印刷機である。 The invention according to claim 3 of the present invention is described in claim 1, wherein the ink supply device has a wearing roller, and ink is supplied to the finisher roll via the wearing roller. It is a gravure rotary printing machine.

版胴に接触したファニッシャーロールを備えたグラビア輪転印刷機において、版胴の端面やファニッシャーロール軸へのインキ飛散を抑制するグラビア輪転印刷機を提供することが可能である。 In a gravure rotary printing press provided with a finisher roll in contact with a plate cylinder, it is possible to provide a gravure rotary printing press that suppresses ink scattering on the end face of the plate cylinder and the finisher roll shaft.

本発明のグラビア輪転印刷機の実施形態におけるファニッシャーロールと版胴の模式的説明図であり、（ａ）は模式的斜視図であり、（ｂ）は模式的上面図である。It is a schematic explanatory view of the finisher roll and the plate cylinder in embodiment of the gravure rotary printing press of this invention, (a) is a schematic perspective view, and (b) is a schematic top view. 本発明のグラビア輪転印刷機の実施形態における印刷ユニットの模式的側面図である。It is a schematic side view of the printing unit in embodiment of the gravure rotary printing press of this invention. 従来のグラビア輪転印刷機の実施形態におけるファニッシャーロールと版胴の模式的説明図であり、（ａ）は模式的斜視図であり、（ｂ）は模式的上面図である。It is a schematic explanatory view of a finisher roll and a plate cylinder in an embodiment of a conventional gravure rotary printing press, (a) is a schematic perspective view, and (b) is a schematic top view. 従来のグラビア輪転印刷機の実施形態における印刷ユニットの模式的側面図である。It is a schematic side view of the printing unit in embodiment of the conventional gravure rotary printing press.

以下、本発明の実施形態のグラビア輪転印刷機について添付図面を参照して説明する。 Hereinafter, the gravure rotary printing press according to the embodiment of the present invention will be described with reference to the accompanying drawings.

図２は本発明のグラビア輪転印刷機の実施形態における印刷ユニットの模式的側面図であり、図１（ａ）は本発明のグラビア輪転印刷機の実施形態におけるファニッシャーロールと版胴の模式的斜視図であり、図１（ｂ）はファニッシャーロールと版胴の模式的上面図である。 FIG. 2 is a schematic side view of a printing unit according to an embodiment of the gravure rotary printing press of the present invention, and FIG. 1 (a) is a schematic view of a finisher roll and a plate cylinder according to an embodiment of the gravure rotary printing press of the present invention. FIG. 1B is a schematic top view of a finisher roll and a plate cylinder.

本発明に係るグラビア輪転印刷機の実施形態の印刷ユニットは、図２で示されるように、版胴２とファニッシャーロール１を有し、そのファーニッシャロール１は図１で示されるように、中央部に円柱状部分２００と側部に円錐台状部分１００から構成され、この
側部の円錐台状部分１００は、小径面がファニッシャーロール１端部になり、大径面がファニッシャーロール中央部の円柱状部分２００に接し、大径面の径がファニッシャーロール中央部の円柱状部分の径と同じであり、ファニッシャーロール軸方向において、版胴端面５１を側部にもつ版胴端部５０は、ファニッシャーロール側部の円錐台状部分１００に位置する。 The printing unit of the embodiment of the gravure rotary printing machine according to the present invention has a truncated cone 2 and a finisher roll 1 as shown in FIG. 2, and the furnisher roll 1 thereof is as shown in FIG. A truncated cone-shaped portion 200 is formed in the central portion and a truncated cone-shaped portion 100 is formed in the side portion. The truncated cone-shaped portion 100 on the side portion has a small-diameter surface as one end of a finisher roll and a large-diameter surface as a fan. It is in contact with the columnar portion 200 at the center of the finisher roll, the diameter of the large diameter surface is the same as the diameter of the columnar portion at the center of the finisher roll, and the plate body end surface 51 is on the side in the axial direction of the finisher roll. The plate body end portion 50 attached to the portion is located at the truncated cone-shaped portion 100 on the side of the finisher roll.

ファニッシャーロール１の円錐台状部分１００の端部には、ファニッシャーロール軸４０がある。 At the end of the truncated cone-shaped portion 100 of the finisher roll 1, there is a finisher roll shaft 40.

ここで、インキ供給装置は、インキ供給ノズル３と、インキパン４を有し、インキ供給ノズル３でインキ供給したインキパン４のインキ５に、ファニッシャーロール１の一部が浸漬している。 Here, the ink supply device has an ink supply nozzle 3 and an ink pan 4, and a part of the finisher roll 1 is immersed in the ink 5 of the ink pan 4 to which the ink is supplied by the ink supply nozzle 3.

本発明に係るグラビア輪転印刷機の印刷は以下の工程により行われる。
（Ｓ１）インキパン４のインキ５に一部浸漬されたファニッシャーロール１が回転して版胴２へインキ５を供給する。
（Ｓ２）供給されたインキ５は版胴２とファニッシャーロール１の接触部分にインキ溜まり７を形成する。
（Ｓ３）インキ５が版胴２の絵柄部に入る。
（Ｓ４）ドクター２０で余分なインキ５を落とす。
（Ｓ５）圧胴ロールと１０と版胴２でニップし、印刷基材３０へインキ５を転写する。
（Ｓ６）（Ｓ２）での版胴２とファニッシャーロール１の接触部分で円柱状部分２００にインキ溜まり７が形成される。そのインキ５は両端に向かう。ファニッシャーロール１の両端に円錐台形状部分１００を有するため、インキ５は、この傾斜を伝わって流れ落ちるため、版胴端部５０の側部の版胴端面５１とファニッシャーロール軸４０へのインキ５の飛散や付着が軽減される。生産を停止したときの、清掃時間を短縮することが可能になる。 Printing of the gravure rotary printing press according to the present invention is performed by the following steps.
(S1) The finisher roll 1 partially immersed in the ink 5 of the ink pan 4 rotates to supply the ink 5 to the plate cylinder 2.
(S2) The supplied ink 5 forms an ink pool 7 at a contact portion between the plate cylinder 2 and the finisher roll 1.
(S3) Ink 5 enters the pattern portion of the plate cylinder 2.
(S4) The doctor 20 removes the excess ink 5.
(S5) Nip the impression cylinder roll, 10 and the plate cylinder 2 to transfer the ink 5 to the printing substrate 30.
Ink pool 7 is formed in the columnar portion 200 at the contact portion between the plate cylinder 2 and the finisher roll 1 in (S6) and (S2). The ink 5 goes to both ends. Since the truncated cone-shaped portions 100 are provided at both ends of the finisher roll 1, the ink 5 flows down along this inclination to the plate body end surface 51 and the finisher roll shaft 40 on the side of the plate body end portion 50. The scattering and adhesion of the ink 5 of the above are reduced. It is possible to shorten the cleaning time when production is stopped.

また、従来のファニッシャーロールを加工して作製することも可能である。 It is also possible to process a conventional finisher roll to produce it.

また、インキ供給装置は、着けローラを有し、インキが着けローラを介し、ファニッシャーロールに供給される構成のものでもよい。 Further, the ink supply device may have a structure in which the ink supply device has the application roller and the ink is supplied to the finisher roll via the application roller.

１・・・ファニシャーロール
２・・・版胴
３・・・インキ供給ノズル
４・・・インキパン
５・・・インキ
６・・・インキ排出機構
７・・・インキ溜まり
１０・・・圧胴ロール
２０・・・ドクター
３０・・・印刷基材
４０・・・ファニッシャーロール軸
５０・・・版胴端部
５１・・・版胴端面
６０・・・インキ汚れ
７０・・・インキ汚れ
９１・・・ファニシャーロール
９２・・・ファニッシャーロール軸
１００・・・円錐台状部分
２００・・・円柱状部分
ａ・・・インキの流れ 1 ... Furniture roll 2 ... Plate cylinder 3 ... Ink supply nozzle 4 ... Ink pan 5 ... Ink 6 ... Ink discharge mechanism 7 ... Ink reservoir 10 ... Crush roll 20 ... Doctor 30 ... Printing base material 40 ... Finisher roll shaft 50 ... Plate body end 51 ... Plate body end surface 60 ... Ink stain 70 ... Ink stain 91 ...・ ・ Furniture roll 92 ・ ・ ・ Finisher roll shaft 100 ・ ・ ・ Conical truncated cone 200 ・ ・ ・ Cylindrical part a ・ ・ ・ Ink flow

Claims (3)

回転するグラビア版胴と、それに接するように設けられたファニッシャーロールと、このファニッシャーロールへインキを供給するインキ供給装置を有するグラビア輪転印刷機において、
前記ファニッシャーロールは中央部に円柱状部分と側部に円錐台状部分から構成され、この側部の円錐台状部分は、小径面がファニッシャーロール端部になり、大径面がファニッシャーロール中央部の円柱状部分に接し、大径面の径がファニッシャーロール中央部の円柱状部分の径と同じであり、ファニッシャーロール軸方向において、ファニッシャーロール側部の円錐台状部分に前記版胴端部を位置することを特徴とするグラビア輪転印刷機。 In a gravure rotary printing press having a rotating gravure plate cylinder, a finisher roll provided in contact with the rotating gravure plate cylinder, and an ink supply device for supplying ink to the finisher roll.
The finisher roll is composed of a columnar portion in the center and a truncated cone-shaped portion in the side portion, and the truncated cone-shaped portion of the side portion has a small-diameter surface as a finisher roll end and a large-diameter surface. It is in contact with the columnar part in the center of the finisher roll, and the diameter of the large diameter surface is the same as the diameter of the columnar part in the center of the finisher roll, and the side part of the finisher roll in the axial direction of the finisher roll. A gravure rotary printing machine characterized in that the plate barrel end portion is located in a truncated cone-shaped portion of the plate. 前記インキ供給装置が、インキ供給ノズルと、インキパンを有し、インキ供給ノズルでインキ供給したインキパンのインキに、前記ファニッシャーロールの一部が浸漬していることを特徴とする請求項１に記載のグラビア輪転印刷機。 The first aspect of the present invention is that the ink supply device has an ink supply nozzle and an ink pan, and a part of the finisher roll is immersed in the ink of the ink pan supplied with the ink by the ink supply nozzle. The described gravure rotary printing press. 前記インキ供給装置が、着けローラを有し、インキが前記着けローラを介し、前記ファニッシャーロールに供給されることを特徴とする請求項１に記載のグラビア輪転印刷機。 The gravure rotary printing press according to claim 1, wherein the ink supply device has a coating roller, and ink is supplied to the finisher roll via the coating roller.
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