JP2009039925A - Doctor holder - Google Patents

Doctor holder Download PDF

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JP2009039925A
JP2009039925A JP2007206424A JP2007206424A JP2009039925A JP 2009039925 A JP2009039925 A JP 2009039925A JP 2007206424 A JP2007206424 A JP 2007206424A JP 2007206424 A JP2007206424 A JP 2007206424A JP 2009039925 A JP2009039925 A JP 2009039925A
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plate
holder
doctor blade
pressing
doctor
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JP5076722B2 (en
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Takashi Baba
隆 馬場
Hitoshi Iwai
仁志 岩井
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent intrusion and solidification of ink between a doctor blade and upper and lower members thereof, and waviness of the cutting edge of the doctor blade in a doctor holder adapted to fix the doctor blade to a holder body by a plate spring-made presser plate. <P>SOLUTION: The doctor blade 11 is nipped and held between the holder body 12 and a holder plate 14. The holder plate 14 is adapted to press the doctor blade by a pressing means 15 including the plate spring-made presser plate 22, a support point member 23 which forms a support point for rotating the presser plate when the rear end thereof is lifted up, and a pressing shaft 25 capable of pushing up the rear end of the presser plate by being rotated. The doctor blade is pressed in surface contact while uniforming the pressing force by working the pressing force by the presser plate on the doctor blade through the highly rigid holder plate whereby intrusion of ink and waviness of the doctor blade cutting edge are prevented. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、印刷機、塗工機等で用いられるドクターホルダーに関し、特に、ドクターブレードの取り外しがきわめて容易であり、洗浄等のメンテナンス性に優れたドクターホルダーに関する。   The present invention relates to a doctor holder used in a printing machine, a coating machine, and the like, and more particularly, to a doctor holder in which removal of a doctor blade is extremely easy and excellent in maintenance properties such as cleaning.

従来のドクターホルダーは、ドクターブレードをはさんで保持する剛性の高い上下のホルダー板を備えており、該上下のホルダー板によってドクターブレードを挟み、上下のホルダー板を幅方向（ドクターブレードの刃先と平行方向）に一定間隔をあけて配置された多数のボルトによって互いに固定する構造となっていた。しかしながら、この構造のドクターホルダーではドクターブレードの交換の際に多数のボルトを緩めたり、締めたりしなければならず、作業負荷が大きいという問題があった。   Conventional doctor holders are equipped with rigid upper and lower holder plates that hold the doctor blade between them, sandwiching the doctor blades between the upper and lower holder plates, and the upper and lower holder plates in the width direction (with the blade edge of the doctor blade) The structure is fixed to each other by a large number of bolts arranged at a predetermined interval in the parallel direction. However, the doctor holder with this structure has a problem that a large number of bolts must be loosened or tightened when replacing the doctor blade, resulting in a heavy work load.

そこで、ドクターブレードの交換を容易に行うため、ドクターブレードの固定に板ばねを用いたドクターホルダーが知られている（例えば、特開平１０−２７２７５７号公報参照）。この種のドクターホルダーは、図９、図１０に示すように、ドクターブレード１を支持するホルダー本体２と、ドクターブレード１を補強するため、ドクターブレード１の上面に配置された背板３と、ドクターブレード１を背板３を介してホルダー本体２に押し付けるための板ばねで形成された押さえ板４と、ホルダー本体２の先端に平行な直線上に位置するように取り付けられた複数のボルト５であって、頭部が押さえ板４の上方に位置し、押さえ板４を旋回させた際の支点となるように設けられたボルト５と、押さえ板４の後端の下に位置するようにホルダー本体２に回転可能に保持された押圧用シャフト６と、その押圧用シャフトを回転させるための取っ手７等を備えている。押圧用シャフト６は、円周の一部を平坦面６ａとした変形円柱形状の棒材で形成されており、回転角度位置を平坦面６ａが横向きとなる位置（図１０に実線で示す位置）とすることで押さえ板４の後端を持ち上げ、押さえ板４をボルト５の頭部を支点として旋回させ、先端を背板３に押し付けてドクターブレード１を固定することができ、また、平坦面６ａが上向きとなる位置に回転させることで押さえ板４の後端を下降させ、ドクターブレード１の固定を解除することができる。この構成のドクターホルダーでは、図１０に示す状態とすることで、押さえ板４でドクターブレード１をホルダー本体２に強く押し付けて保持することができ、この状態で使用される。そしてドクターブレード１の交換の際には、単に押圧用シャフト６を取っ手７を持って上方向に旋回させ、平坦面６ａを上向きとすることでドクターブレード１の固定を解除することができ、簡単にドクターブレード１の交換を行うことができる。   Therefore, in order to easily replace the doctor blade, a doctor holder using a leaf spring for fixing the doctor blade is known (for example, see Japanese Patent Application Laid-Open No. 10-272757). As shown in FIGS. 9 and 10, this type of doctor holder includes a holder body 2 that supports the doctor blade 1, a back plate 3 disposed on the upper surface of the doctor blade 1 to reinforce the doctor blade 1, and A holding plate 4 formed of a leaf spring for pressing the doctor blade 1 against the holder body 2 through the back plate 3 and a plurality of bolts 5 attached so as to be positioned on a straight line parallel to the tip of the holder body 2 The head is positioned above the pressing plate 4 so that it is positioned below the rear end of the pressing plate 4 and the bolt 5 provided as a fulcrum when the pressing plate 4 is turned. A pressing shaft 6 rotatably held by the holder main body 2 and a handle 7 for rotating the pressing shaft are provided. The pressing shaft 6 is formed of a deformed columnar bar having a part of the circumference as a flat surface 6a, and the rotation angle position is a position where the flat surface 6a faces sideways (position indicated by a solid line in FIG. 10). Thus, the rear end of the pressing plate 4 can be lifted, the pressing plate 4 can be turned around the head of the bolt 5 as a fulcrum, and the tip can be pressed against the back plate 3 to fix the doctor blade 1. The rear end of the pressing plate 4 can be lowered by rotating it to a position where 6a is directed upward, and the doctor blade 1 can be released from being fixed. In the doctor holder having this configuration, the doctor blade 1 can be strongly pressed against the holder body 2 by the pressing plate 4 and held in the state shown in FIG. 10, and is used in this state. When the doctor blade 1 is replaced, the doctor blade 1 can be released simply by simply rotating the pressing shaft 6 with the handle 7 and turning the flat surface 6a upward. The doctor blade 1 can be replaced.

ところが、この種のドクターホルダーには次のような問題点があった。
１．ドクターブレード１とホルダー本体２の間、ドクターブレード１と背板３の間、背板３と押さえ板４の間などにインキが入り込み、それが乾燥して固まってしまい、ドクターブレード１を取り外すことがきわめて困難となる場合がある。
２．ドクターブレード１の刃先にうねり等のむらが発生しやすく、このため、均一な膜厚が得られず、印刷品質に悪影響を与える。また、うねりによる影響を軽減させるためにドクター圧力を大きくすることが行われているが、その場合ドクター刃先や版胴の摩滅が進行し、耐久性に問題がある。 However, this kind of doctor holder has the following problems.
1. Ink enters between the doctor blade 1 and the holder body 2, between the doctor blade 1 and the back plate 3, between the back plate 3 and the holding plate 4, and the ink is dried and solidified, and the doctor blade 1 is removed. Can be extremely difficult.
2. Unevenness such as undulation is likely to occur at the blade edge of the doctor blade 1, and thus a uniform film thickness cannot be obtained, which adversely affects print quality. Further, in order to reduce the influence of the undulation, the doctor pressure is increased. In this case, however, the wear of the doctor blade edge and the plate cylinder progresses, and there is a problem in durability.

特開平１０−２７２７５７号公報Japanese Patent Laid-Open No. 10-272757

本発明はかかる問題点に鑑みてなされたもので、ドクターブレードを板ばねで形成された押さえ板を用いてホルダー本体に固定する構成のドクターホルダーにおいて、ドクターブレードとその上下に位置する部材との間にインキが入り込んで固着することを抑制することができ、且つドクターブレードの刃先にうねりが発生することを抑制することができるドクターホルダーを提供することを課題とする。   The present invention has been made in view of such problems, and in the doctor holder configured to fix the doctor blade to the holder body using a pressing plate formed of a leaf spring, the doctor blade and the members positioned above and below the doctor blade It is an object of the present invention to provide a doctor holder that can prevent ink from entering and sticking in between, and can suppress the occurrence of waviness at the edge of the doctor blade.

本発明のドクターホルダーはかかる課題を解決するため、ドクターブレードを支持するホルダー本体と、該ホルダー本体との間に前記ドクターブレードをはさみ付けて保持するための剛性の大きいホルダー板と、前記ドクターブレードを前記ホルダー本体とホルダー板ではさみ付けて保持するよう該ホルダー板を前記ホルダー本体に押し付ける押圧手段とを備えた構成とし、その押圧手段を、先端が前記ホルダー板の上面に位置し、後端が前記ホルダー板の後端よりも後ろに延び出すように配置された押さえ板と、該押さえ板の先端と後端との間の中間領域の上に配置された支点部材であって、前記押さえ板の後端を持ち上げた際に該押さえ板が前記支点部材を支点として旋回するように前記押さえ板を支持する支点部材と、前記押さえ板の後端の下に位置するように前記ホルダー本体に回転可能に保持され、回転角度位置を変えることで前記押さえ板の後端を持ち上げ、該押さえ板を前記支点部材を支点として旋回させる押圧用シャフトとを有する構成としたものである。   In order to solve the above problems, the doctor holder of the present invention has a holder main body for supporting a doctor blade, a rigid holder plate for holding the doctor blade between the holder main body, and the doctor blade. And a pressing means for pressing the holder plate against the holder body so as to be held between the holder body and the holder plate, and the pressing means has a tip positioned on the upper surface of the holder plate and a rear end. Is a pressing plate arranged to extend behind the rear end of the holder plate, and a fulcrum member arranged on an intermediate region between the front end and the rear end of the pressing plate, A fulcrum member that supports the pressing plate so that the pressing plate turns around the fulcrum member when the rear end of the plate is lifted; A pressing shaft that is rotatably held by the holder body so as to be positioned below the end, lifts the rear end of the pressing plate by changing the rotation angle position, and rotates the pressing plate with the fulcrum member as a fulcrum. It is set as the structure which has.

ここで、前記支点部材を、前記押さえ板の全長にほぼ等しい長さの棒材で形成することが好ましい。   Here, it is preferable that the fulcrum member is formed of a bar having a length substantially equal to the entire length of the pressing plate.

また、ドクターブレードとホルダー板の間に、先端を該ホルダー板の先端より延び出させる形態で背板を設け、その背板を前記ホルダー板に固定する構造とすることが好ましい。   Further, it is preferable that a back plate is provided between the doctor blade and the holder plate so that the tip extends from the tip of the holder plate, and the back plate is fixed to the holder plate.

本発明のドクターホルダーは、ドクターブレードを剛性の高いホルダー本体とホルダー板ではさみ、そのホルダー板を押さえ板によってホルダー本体に押し付けることでドクターブレードを保持する構成としているので、押さえ板がその先端領域のみでホルダー板を押さえ、従ってホルダー板を線接触に近い形態で押さえているにもかかわらず、ホルダー板は広い面接触でドクターブレードをホルダー本体に押し付けて保持することができ、ドクターブレードを安定して保持することができると共にドクターブレードとその両面をはさみ付けている部材との間にインキが侵入しにくく、このため、侵入したインキが乾燥して固まり、ドクターブレードを取り外しにくくなるという現象を防止できる。また、剛性の高いホルダー本体とホルダー板でドクターブレードをはさみ付けているため、ホルダー本体とホルダー板とによるドクターブレードの押圧力の、幅方向（ドクターブレードの刃先と平行方向）のばらつきが小さく、このため、ドクターブレードの刃先にうねりがほとんど発生しない。かくして、本発明のドクターホルダーを用いることで、ドクター圧力をあまり大きくしなくても版胴版面を均一にかき取って版胴版面の膜厚を均一とすることができ、印刷品質を高めることができると共にドクター刃先や版胴の摩滅を抑制でき、耐久性を向上できる。   The doctor holder of the present invention is configured to hold the doctor blade by holding the doctor blade between the rigid holder body and the holder plate and pressing the holder plate against the holder body with the holding plate. The holder plate can be held by pressing the doctor blade against the holder body with a wide surface contact despite the fact that the holder plate is pressed only by this, and therefore the holder plate is pressed in a form close to line contact. In addition, the ink is difficult to enter between the doctor blade and the member that holds both sides of the doctor blade. Can be prevented. In addition, since the doctor blade is sandwiched between the holder body and the holder plate with high rigidity, the variation of the pressing force of the doctor blade by the holder body and the holder plate in the width direction (the direction parallel to the blade edge of the doctor blade) is small. For this reason, almost no undulation is generated at the blade edge of the doctor blade. Thus, by using the doctor holder of the present invention, even if the doctor pressure is not increased too much, the plate cylinder surface can be evenly scraped and the film thickness of the plate cylinder surface can be made uniform, thereby improving the printing quality. In addition, the wear of the doctor blade edge and the plate cylinder can be suppressed, and the durability can be improved.

ここで、前記支点部材を、前記押さえ板の全長にほぼ等しい長さの棒材で形成すると、押さえ板を旋回させる際の支点が連続した直線状となり、このため、押さえ板先端のホルダー板に対する押圧力を幅方向に均一とすることができ、ドクターブレードの刃先のうねり発生を一層抑制することができる。   Here, when the fulcrum member is formed of a bar having a length substantially equal to the entire length of the pressing plate, the fulcrum when the pressing plate is turned becomes a continuous linear shape. The pressing force can be made uniform in the width direction, and the occurrence of undulation of the blade edge of the doctor blade can be further suppressed.

また、ドクターブレードとホルダー板の間に、先端を該ホルダー板の先端より延び出させる形態で背板を設けておくことで、ドクターブレードを補強してドクター効果を高めることができ、更に、その背板を前記ホルダー板に固定する構造とすることで、ドクターブレード交換の際に背板が外れることがなく、ドクターブレードの交換を容易に行うことができる。   In addition, by providing a back plate between the doctor blade and the holder plate so that the tip extends from the tip of the holder plate, the doctor blade can be reinforced and the doctor effect can be enhanced. By adopting a structure in which the holder plate is fixed to the holder plate, the doctor blade can be easily replaced without removing the back plate when replacing the doctor blade.

以下、図面に示す本発明の好適な実施の形態を説明する。図１は本発明の実施の形態に係るドクターホルダーの概略平面図、図２（ａ）、（ｂ）はそれぞれ、図１のＡ−Ａ矢視断面を、ドクターブレード保持状態及び解除状態で示す概略断面図、図３（ａ）、（ｂ）はそれぞれ、図１のＢ−Ｂ矢視断面を、ドクターブレード保持状態及び解除状態で示す概略断面図、図４は図１のＣ−Ｃ矢視断面図、図５は図１に示すドクターホルダーを分解して示す概略断面図、図６は図１に示すドクターホルダーを分解して示す概略平面図である。全体を参照符号１０で示すドクターホルダーは、ドクターブレード１１を支持するホルダー本体１２と、ドクターブレード１１を補強するため、ドクターブレード１１の上面に配置された背板１３と、ホルダー本体１２との間にドクターブレード１１をはさみ付けて保持するための剛性の大きいホルダー板１４と、ドクターブレード１１をホルダー本体１２とホルダー板１４ではさみ付けて保持するようホルダー板１４をホルダー本体１２に押し付ける押圧手段１５等を備えている。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention shown in the drawings will be described. FIG. 1 is a schematic plan view of a doctor holder according to an embodiment of the present invention, and FIGS. 2A and 2B are cross-sectional views taken along arrows AA in FIG. 1 in a doctor blade holding state and a released state, respectively. 3A and 3B are schematic cross-sectional views showing the cross-section taken along the line BB in FIG. 1 in the doctor blade holding state and the released state, respectively, and FIG. 4 is the CC arrow in FIG. FIG. 5 is an exploded schematic sectional view showing the doctor holder shown in FIG. 1, and FIG. 6 is an exploded schematic plan view showing the doctor holder shown in FIG. A doctor holder, generally indicated by reference numeral 10, includes a holder main body 12 that supports the doctor blade 11, a back plate 13 disposed on the upper surface of the doctor blade 11 to reinforce the doctor blade 11, and the holder main body 12. A rigid holder plate 14 for sandwiching and holding the doctor blade 11 and pressing means 15 for pressing the holder plate 14 against the holder body 12 so as to hold the doctor blade 11 between the holder body 12 and the holder plate 14. Etc.

ホルダー本体１２はドクターブレード１１とホルダー板１４とを支持する平坦な支持面１２ａを備えており、ホルダー板１４は背板１３を介してドクターブレード１１を支持する平坦な支持面１４ａとホルダー本体１２の支持面１２ａに当接させるための平坦な当接面１４ｂを備えている。支持面１４ａと当接面１４ｂには、ドクターブレード１１及び背板１３の厚さにほぼ等しい段差が付けられており、ホルダー板１４の先端領域をホルダー本体１２に向かって押し付けることで、ドクターブレード１１及び背板１３を面接触ではさみ付けて保持することができる。ホルダー本体１２及びホルダー板１４は、ステンレス鋼等の金属材や、炭素繊維強化樹脂等の強化樹脂で作られる。ホルダー板１４の支持面１４ａ形成領域の厚さとしては、その上面を押圧手段１５で押圧した時に、その押圧力に部分的なむらがあっても、支持面１４ａが背板１３を介してドクターブレード１１を極力均一に押圧できるよう、適度な剛性を備えることができるように定めるものであり、５〜２０ｍｍ程度に選定することが好ましい。   The holder main body 12 includes a flat support surface 12 a that supports the doctor blade 11 and the holder plate 14, and the holder plate 14 supports the doctor blade 11 via the back plate 13 and the holder main body 12. A flat contact surface 14b for contacting the support surface 12a is provided. The support surface 14a and the contact surface 14b are provided with steps substantially equal to the thicknesses of the doctor blade 11 and the back plate 13, and the doctor blade is pressed by pressing the tip region of the holder plate 14 toward the holder body 12. 11 and the back plate 13 can be held by surface contact. The holder body 12 and the holder plate 14 are made of a metal material such as stainless steel or a reinforced resin such as a carbon fiber reinforced resin. The thickness of the support surface 14a forming region of the holder plate 14 is such that when the upper surface is pressed by the pressing means 15, the support surface 14a is interposed via the back plate 13 even if the pressing force has partial unevenness. It is determined so as to have an appropriate rigidity so that the blade 11 can be pressed as uniformly as possible, and is preferably selected to be about 5 to 20 mm.

背板１３は、ドクターブレード１１を補強して腰の強さを加減するためのものであり、先端がホルダー本体１４の先端からドクターブレードの刃先近傍にまで延び出すように配置されている。背板１３は０．４ｍｍ程度のステンレス鋼等の鋼板で作られている。この背板１３は、複数箇所（例えば、両端近傍の２箇所）をねじ１７でホルダー板１４の支持面１４ａに固定されている。このように背板１３をホルダー板１４にあらかじめ固定しておくことで、ドクターブレード１１の交換の際に背板１３が動くことがなく、ドクターブレード１１の交換作業を容易とすることができる。   The back plate 13 reinforces the doctor blade 11 to increase or decrease the strength of the waist, and is arranged so that the tip extends from the tip of the holder main body 14 to the vicinity of the blade edge of the doctor blade. The back plate 13 is made of a steel plate such as about 0.4 mm stainless steel. The back plate 13 is fixed to the support surface 14 a of the holder plate 14 with screws 17 at a plurality of locations (for example, two locations near both ends). In this way, by fixing the back plate 13 to the holder plate 14 in advance, the back plate 13 does not move when the doctor blade 11 is replaced, and the replacement work of the doctor blade 11 can be facilitated.

ホルダー本体１２には、ドクターブレード１１の位置決めを行うための位置決めピン１８が取り付けられており、ドクターブレード１１の後端をこの位置決めピン１８に押し付けることでドクターブレード１１をホルダー本体１２に対して位置決めすることができる。なお、ホルダー板１４にはこの位置決めピン１８を挿入させる孔が形成されている。ホルダー本体１２には、持ち運び用の取っ手１９も取り付けられている。   A positioning pin 18 for positioning the doctor blade 11 is attached to the holder body 12, and the doctor blade 11 is positioned with respect to the holder body 12 by pressing the rear end of the doctor blade 11 against the positioning pin 18. can do. The holder plate 14 is formed with a hole for inserting the positioning pin 18. A carrying handle 19 is also attached to the holder body 12.

ホルダー板１４をホルダー本体１２に押し付ける押圧手段１５は、先端がホルダー板１４の上面に位置し、後端がホルダー板１４の後端よりも後ろに延び出すように配置された押さえ板２２と、その押さえ板２２の上方に設けられた支点部材２３であって、押さえ板２２の後端を持ち上げた際に該押さえ板が支点部材２３を支点として旋回し、先端が下降してホルダー板１４を押圧するように押さえ板２２を支持する支点部材２３と、その支点部材２３をホルダー本体１２に取り付けるための支点部材取付具２４と、押さえ板２２の後端の下に位置するようにホルダー本体１２に回転可能に保持され、回転角度位置を変えることで押さえ板２２の後端を持ち上げ、押さえ板２２を支点部材２３を支点として旋回させる押圧用シャフト２５等を備えている。押さえ板２２は、図２（ａ）、図３（ａ）に示すように、その押さえ板２２の後端を押圧用シャフト２５で持ち上げた時に支点部材２３を支点として旋回し、先端でホルダー板１４を押圧し、ドクターブレード１１をホルダー本体１２との間に所望の強度ではさみ付けて保持することができるように設けるものであり、ホルダー板１４を全幅に渡って押圧することができるよう、ホルダー板１４とほぼ等しい幅を有している。押さえ板２２には厚さが１ｍｍ程度の板ばねが用いられる。   The pressing means 15 that presses the holder plate 14 against the holder main body 12 includes a pressing plate 22 that is disposed so that the front end is located on the upper surface of the holder plate 14 and the rear end extends behind the rear end of the holder plate 14. A fulcrum member 23 provided above the presser plate 22, and when the rear end of the presser plate 22 is lifted, the presser plate turns around the fulcrum member 23 as a fulcrum, and the tip is lowered to move the holder plate 14. A fulcrum member 23 that supports the pressing plate 22 so as to press, a fulcrum member mounting tool 24 for attaching the fulcrum member 23 to the holder main body 12, and the holder main body 12 so as to be positioned below the rear end of the pressing plate 22. A pressing shaft 25 that lifts the rear end of the pressing plate 22 by changing the rotation angle position and rotates the pressing plate 22 around the fulcrum member 23 as a fulcrum. Eteiru. As shown in FIGS. 2 (a) and 3 (a), the presser plate 22 turns around the fulcrum member 23 as a fulcrum when the rear end of the presser plate 22 is lifted by the pressing shaft 25, and the holder plate at the tip end. 14 is provided so that the doctor blade 11 can be sandwiched and held with a desired strength between the holder body 12 and the holder plate 14 can be pressed over the entire width. It has a width substantially equal to the holder plate 14. A plate spring having a thickness of about 1 mm is used for the holding plate 22.

支点部材２３は、押さえ板２２の幅にほぼ等しい長さの棒材で形成されており、押さえ板２２をその全幅に渡って連続した直線状に支持することができる。この支点部材２３をホルダー本体１２に取り付けるための支点部材取付具２４は、図５から良く分かるように、ホルダー本体１２に形成しているねじ孔１２ｂにねじ込むねじ部２４ａと、ホルダー板１４に形成している貫通孔１４ｃに挿入される大径部２４ｂと、その上の小径部２４ｃと、頭部２４ｄを備えている。頭部２４ｄの外径は、ホルダー板１４の貫通孔１４ｃに挿入可能なように大径部２４ｂの外径と同一若しくはそれより若干小さく定められており、これにより、ホルダー本体１２に支点部材取付具２４を取り付けた状態で、その上からホルダー板１４をかぶせ、貫通孔１４ｃ内に支点部材取付具２４の大径部２４ｂを挿入させることができる。支点部材２３には、図７、図８に示すように、支点部材取付具２４の頭部２４ｄを通過させる得る内径の挿入用穴２３ａと、その挿入用穴２３ａの横に続くように形成され、支点部材取付具２４の小径部２４ｃを挿入させうる幅の溝２３ｂと、溝２３ｂの上部領域の周縁に、支点部材取付具２４の頭部２４ｄの下面に当接しうるように形成された段部２３ｃを備えている。この構造により、図８（ａ）に示すように、ホルダー本体１２にあらかじめ支点部材取付具２４を取り付け、且つホルダー本体１２の上にホルダー板１４及び押さえ板２２を取り付けた状態で、支点部材取付具２４の上方に支点部材２３の挿入用穴２３ａを位置させ、その状態で支点部材２３を矢印Ｄ方向に下降させて挿入用穴２３ａ内に頭部２４ｄ及び小径部２４ｃを挿入し、次いで支点部材２３を矢印Ｅ方向に移動させることで図８（ｂ）に示すように、頭部２４ｄを段部２３ｃの上に位置させることができ、簡単な操作によって、支点部材２３ｃを支点部材取付具２４に対して段部２３ｃが頭部１４ｄの下面に突き当たる位置以上に持ち上げられないように保持させることができる。ここで、支点部材２３ｃが支点部材取付具２４によって拘束される高さ方向の位置は、押さえ板２２の後端を、図２（ａ）、図３（ａ）に示すように持ち上げた時に、支点部材２３を支点として旋回した押さえ板２２がその先端でホルダー板１４を所望の押圧力で押圧することができるように定めるものであり、例えば、押さえ板２２の支点部材２３で支持された部分とホルダー板１４との間に０．５〜１ｍｍ程度の隙間が形成されるように定められる。なお、この実施の形態では、図３（ｂ）、図８（ｂ）に示すように、押さえ板２２をホルダー板１４の上面に載せた状態では、支点部材２３がその押さえ板２２の上に載った状態となり、その段部２３ｃと支点部材取付具２４の頭部２４ｄとの間に隙間が形成されているが、押さえ板２２の後端を持ち上げた時には、図３（ａ）に示すように、押さえ板２２によって支点部材２３が、所定の高さ位置（段部２３ｃが頭部２４ｄの下面に突き当たる位置）に持ち上げられる構造であるが、この構造を採用する代わりに、支点部材２３を常に所定の高さ位置に保つようにホルダー本体１２に取り付ける構造としてもよい。   The fulcrum member 23 is formed of a bar having a length substantially equal to the width of the pressing plate 22, and can support the pressing plate 22 in a continuous linear shape over the entire width thereof. The fulcrum member attachment 24 for attaching the fulcrum member 23 to the holder main body 12 is formed on the holder plate 14 and the screw portion 24a screwed into the screw hole 12b formed in the holder main body 12, as can be seen from FIG. A large-diameter portion 24b to be inserted into the through-hole 14c, a small-diameter portion 24c thereon, and a head portion 24d are provided. The outer diameter of the head 24d is determined to be the same as or slightly smaller than the outer diameter of the large-diameter portion 24b so that it can be inserted into the through-hole 14c of the holder plate 14, so that the fulcrum member is attached to the holder main body 12. With the tool 24 attached, the holder plate 14 can be covered from above, and the large-diameter portion 24b of the fulcrum member mounting tool 24 can be inserted into the through hole 14c. As shown in FIGS. 7 and 8, the fulcrum member 23 is formed to have an inner diameter insertion hole 23a through which the head 24d of the fulcrum member mounting tool 24 can pass, and to be next to the insertion hole 23a. A groove 23b having a width into which the small diameter portion 24c of the fulcrum member fixture 24 can be inserted, and a step formed on the periphery of the upper region of the groove 23b so as to be in contact with the lower surface of the head 24d of the fulcrum member fixture 24 A portion 23c is provided. With this structure, as shown in FIG. 8 (a), the fulcrum member attachment 24 is attached to the holder body 12 in advance, and the holder plate 14 and the holding plate 22 are attached to the holder body 12. The insertion hole 23a of the fulcrum member 23 is positioned above the tool 24, and in this state, the fulcrum member 23 is lowered in the direction of arrow D to insert the head 24d and the small diameter portion 24c into the insertion hole 23a, and then the fulcrum By moving the member 23 in the direction of arrow E, as shown in FIG. 8B, the head 24d can be positioned on the stepped portion 23c, and the fulcrum member 23c can be moved by a simple operation. 24, the stepped portion 23c can be held so as not to be lifted beyond the position where it hits the lower surface of the head portion 14d. Here, the position in the height direction in which the fulcrum member 23c is restrained by the fulcrum member fixture 24 is as follows when the rear end of the pressing plate 22 is lifted as shown in FIGS. 2 (a) and 3 (a). The holding plate 22 rotated around the fulcrum member 23 is determined so that the holder plate 14 can be pressed with a desired pressing force at its tip. For example, a portion of the holding plate 22 supported by the fulcrum member 23 And the holder plate 14 are defined such that a gap of about 0.5 to 1 mm is formed. In this embodiment, as shown in FIGS. 3 (b) and 8 (b), when the pressing plate 22 is placed on the upper surface of the holder plate 14, the fulcrum member 23 is placed on the pressing plate 22. A gap is formed between the stepped portion 23c and the head 24d of the fulcrum member fixture 24, but when the rear end of the presser plate 22 is lifted, as shown in FIG. Further, the fulcrum member 23 is lifted to a predetermined height position (position where the stepped portion 23c hits the lower surface of the head 24d) by the holding plate 22, but instead of adopting this structure, the fulcrum member 23 is It is good also as a structure attached to the holder main body 12 so that it may always maintain a predetermined height position.

押さえ板２２には、図６に示すように、支点部材取付具２４の頭部２４ｄを通すための大径穴２２ａとそれに続く狭い幅の、小径部２４ｃを通すことのできる溝２２ｂが形成されている。この構成により、ホルダー本体１２に取り付けた状態の支点部材取付具２４に対して押さえ板２２を、その小径部２４ｃが溝２２ｂ内に挿入された状態に取り付けることができ、その状態で、支点部材取付具２４の小径部２４ｃによって押さえ板２２を位置決めして保持できる。   As shown in FIG. 6, the holding plate 22 is formed with a large-diameter hole 22a through which the head 24d of the fulcrum member fixture 24 is passed, and a groove 22b through which the small-diameter portion 24c with a narrow width can be passed. ing. With this configuration, the pressing plate 22 can be attached to the fulcrum member fixture 24 attached to the holder main body 12 in a state where the small diameter portion 24c is inserted into the groove 22b. The holding plate 22 can be positioned and held by the small diameter portion 24 c of the fixture 24.

押圧用シャフト２５は、円周の一部を平坦面２５ａとした変形円柱形状の棒材で形成されており、図２（ａ）、図３（ａ）に示すように回転角度位置を平坦面２５ａが横向きとなる位置とすることで押さえ板２２の後端を持ち上げ、押さえ板２２を支点部材２３を支点として旋回させ、先端をホルダー板１４の上面に押し付けてホルダー板１４をホルダー本体１２に向かって押し付け、ドクターブレード１１を固定することができ、また、図２（ｂ）、図３（ｂ）に示すように平坦面２５ａが上向きとなる位置に回転させることで押さえ板２２の後端を下降させ、ドクターブレード１１の固定を解除することができる。ここで、押圧用シャフト２５を回転させて押さえ板２２の後端を持ち上げる量は、押さえ板２２がその後端を持ち上げた時に、支点部材２３を支点として旋回した押さえ板２２の先端でホルダー板１４を所望の押圧力で押圧することができるように定めるものであり、例えば、３ｍｍ程度に定められる。押圧用シャフト２５の長手方向の一部箇所は円筒状のままの円筒部２５ｂ（図６参照）となっており、この円筒部２５ｂを軸受部材２８でホルダー本体１２に取り付けることで、押圧用シャフト２５をホルダー本体１２に回転可能な形態で取り付けることができる。この押圧用シャフト２５には、それを回転操作するための取っ手２９も取り付けられている。なお、押さえ板２２の後端縁には、軸受部材２８及び取っ手２９の干渉を避けるため、切欠き２２ｃ、２２ｄが形成されている。   The pressing shaft 25 is formed of a deformed cylindrical bar having a part of the circumference as a flat surface 25a, and the rotation angle position is flat as shown in FIGS. 2 (a) and 3 (a). The rear end of the pressing plate 22 is lifted by setting the position of 25a to be sideways, the pressing plate 22 is turned around the fulcrum member 23, and the tip is pressed against the upper surface of the holder plate 14 to bring the holder plate 14 to the holder body 12. The doctor blade 11 can be fixed by pressing toward the rear, and the rear end of the presser plate 22 can be rotated by rotating the flat surface 25a upward as shown in FIGS. 2 (b) and 3 (b). Can be lowered and the doctor blade 11 can be released. Here, the amount by which the pressing shaft 25 is rotated to lift the rear end of the presser plate 22 is such that when the presser plate 22 lifts the rear end, the holder plate 14 is turned at the tip of the presser plate 22 rotated around the fulcrum member 23 as a fulcrum. Can be pressed with a desired pressing force, for example, about 3 mm. A portion of the pressing shaft 25 in the longitudinal direction is a cylindrical portion 25b (see FIG. 6) that is cylindrical, and the cylindrical portion 25b is attached to the holder main body 12 with a bearing member 28, whereby the pressing shaft 25 can be attached to the holder body 12 in a rotatable manner. The pressing shaft 25 is also provided with a handle 29 for rotating it. In order to avoid interference between the bearing member 28 and the handle 29, notches 22c and 22d are formed at the rear end edge of the pressing plate 22.

次に、上記構成のドクターホルダー１０の使用方法を説明する。図２（ｂ）、図３（ｂ）に示すように、押圧用シャフト２５を、その平坦面２５ａが上向きとなる位置とした状態では、押さえ板２２は単にホルダー板１４の上に載っただけの状態であるので、ホルダー板１４は押圧されておらず、このため、ドクターブレード１１を容易に交換できる。新たなドクターブレード１１をホルダー本体１２とホルダー板１４の間に装着した後は、押圧用シャフト２５の取っ手２９を操作して、押圧用シャフト２５を、図２（ａ）、図３（ａ）に示すように、平坦面２５ａが横向きとなる位置に回転させる。これにより、押さえ板２２の後端が押圧用シャフト２５によって持ち上げられ、押さえ板２２が支点部材２３を支点として旋回し、先端でホルダー板１４を押圧し、ドクターブレード１１をホルダー本体１２とホルダー板１４ではさみ付けて保持する。この状態でドクターホルダー１１を使用する。ここで、ドクターブレード１１は剛性の高いホルダー板１４によってホルダー本体１２に対してはさみ付けられ、保持されるので、押さえ板２２がその先端領域のみでホルダー板１４を押さえているにもかかわらず、ホルダー板１４は広い面接触でドクターブレード１１を背板１３を介してホルダー本体１２に押し付けて保持することができ、ドクターブレードを安定して保持することができると共にドクターブレードとその両面をはさみ付けている部材との間にインキが侵入しにくい。このため、使用中にインキが侵入し、乾燥して固まり、ドクターブレードを取り外しにくくなるという現象を防止できる。また、押さえ板２２はその全幅を支持する支点部材２３を支点として旋回し、先端でホルダー板１４を押圧しているので、押さえ板２２の先端のホルダー板１４に対する押圧力は幅方向にきわめて均一となっており、且つ剛性の高いホルダー板１４を介してドクターブレード１１を押圧しているので、ホルダー板１４によるドクターブレード１１の押圧力は、幅方向にきわめて均一となっている。このため、ドクターブレード１１の刃先にうねりがほとんど発生せず、このドクターホルダー１０を用いることで、ドクター圧力をあまり大きくしなくても版胴版面の膜厚が均一となるように掻き取ることができ、印刷品質を高めることができると共にドクター刃先や版胴の摩滅を抑制でき、耐久性を向上できる。   Next, the usage method of the doctor holder 10 of the said structure is demonstrated. As shown in FIG. 2B and FIG. 3B, in the state where the pressing shaft 25 is in a position where the flat surface 25a faces upward, the pressing plate 22 is simply placed on the holder plate 14. In this state, the holder plate 14 is not pressed, so that the doctor blade 11 can be easily replaced. After the new doctor blade 11 is mounted between the holder main body 12 and the holder plate 14, the handle 29 of the pressing shaft 25 is operated so that the pressing shaft 25 is moved to the position shown in FIGS. 2 (a) and 3 (a). As shown in FIG. 2, the flat surface 25a is rotated to a side position. As a result, the rear end of the presser plate 22 is lifted by the pressing shaft 25, the presser plate 22 pivots about the fulcrum member 23, presses the holder plate 14 at the tip, and the doctor blade 11 moves the holder main body 12 and the holder plate. 14 is held by being sandwiched. In this state, the doctor holder 11 is used. Here, the doctor blade 11 is sandwiched and held by the holder body 12 by the highly rigid holder plate 14, so that the pressing plate 22 presses the holder plate 14 only at its tip region. The holder plate 14 can press and hold the doctor blade 11 against the holder body 12 via the back plate 13 with wide surface contact, and can hold the doctor blade stably and sandwich the doctor blade and both sides thereof. It is difficult for ink to enter between the components. For this reason, it is possible to prevent a phenomenon in which ink enters during use, dries and hardens, and makes it difficult to remove the doctor blade. Further, since the pressing plate 22 turns around the fulcrum member 23 supporting the entire width thereof and presses the holder plate 14 at the tip, the pressing force against the holder plate 14 at the tip of the pressing plate 22 is extremely uniform in the width direction. Since the doctor blade 11 is pressed through the highly rigid holder plate 14, the pressing force of the doctor blade 11 by the holder plate 14 is very uniform in the width direction. For this reason, almost no undulation is generated at the blade edge of the doctor blade 11, and by using this doctor holder 10, the film thickness of the plate cylinder surface can be scraped evenly without increasing the doctor pressure. In addition, the printing quality can be improved and the wear of the doctor blade edge and the plate cylinder can be suppressed, and the durability can be improved.

ドクターブレード１１の交換に当たっては、単に押圧用シャフト２５の取っ手２９を操作して、押圧用シャフト２５を、図２（ｂ）、図３（ｂ）に示すように、平坦面２５ａが上向きとなる位置に回転させることで、ドクターブレード１１の固定を解除できるので、容易に交換できる。また、この際、ドクターブレード１１の上下面とそれ上下に位置する部品との間でインキが固まっているということがほとんどないので、ドクターブレード１１を容易に取り外すことができ、この点からもドクターブレード交換を容易に行うことができる。   When replacing the doctor blade 11, the handle 29 of the pressing shaft 25 is simply operated, and the pressing shaft 25 has the flat surface 25a facing upward as shown in FIGS. 2 (b) and 3 (b). By rotating to the position, the doctor blade 11 can be released and can be easily replaced. At this time, since the ink is hardly solidified between the upper and lower surfaces of the doctor blade 11 and the parts positioned above and below it, the doctor blade 11 can be easily removed. Blade replacement can be performed easily.

なお、上記した実施の形態では、押さえ板２２が旋回する際の支点を形成する支点部材２３を連続した棒材で構成しているが、この代わりに、従来用いていたように、幅方向に一定間隔をあけてボルトを取り付け、そのボルトを支点としてもよい。この場合には、押さえ板先端のホルダー板１４に対する押圧力が、ボルトで支持された位置に対応する領域と、隣接したボルト間の支持されていない位置に対応する領域とで異なることとなり、従って、押さえ板先端のホルダー板１４に対する押圧力が幅方向に変化しているが、剛性の高いホルダー板１４を介してドクターブレード１１を押圧するため、ホルダー板１４がドクターブレード１１をはさみ付けた際の押圧力は幅方向にあまりばらつくことはない。このため、ドクターブレード１１にうねりはあまり生じることはなく、幅方向に比較的均一にドクター効果を発揮することができる。   In the above-described embodiment, the fulcrum member 23 that forms a fulcrum when the presser plate 22 turns is constituted by a continuous bar, but instead, in the width direction as conventionally used, Bolts may be attached at regular intervals, and the bolts may be used as fulcrums. In this case, the pressing force on the holder plate 14 at the front end of the pressing plate is different between the region corresponding to the position supported by the bolt and the region corresponding to the unsupported position between the adjacent bolts. The pressing force on the holder plate 14 at the tip of the pressing plate changes in the width direction, but the doctor blade 11 is pressed through the highly rigid holder plate 14, so that the holder plate 14 sandwiches the doctor blade 11. The pressing force does not vary much in the width direction. Therefore, the doctor blade 11 does not swell so much, and the doctor effect can be exhibited relatively uniformly in the width direction.

以上に本発明の好適な実施の形態を説明したが、本発明はこの実施の形態に限定されず、特許請求の範囲の記載範囲内で適宜変更可能であることは言うまでもない。   The preferred embodiment of the present invention has been described above, but the present invention is not limited to this embodiment, and it is needless to say that the present invention can be modified as appropriate within the scope of the claims.

本発明の実施の形態に係るドクターホルダーの概略平面図Schematic plan view of a doctor holder according to an embodiment of the present invention （ａ）、（ｂ）はそれぞれ、図１のＡ−Ａ矢視断面を、ドクターブレード保持状態及び解除状態で示す概略断面図(A), (b) is a schematic sectional drawing which shows the AA arrow cross section of FIG. 1 in a doctor blade holding state and a cancellation | release state, respectively. （ａ）、（ｂ）はそれぞれ、図１のＢ−Ｂ矢視断面を、ドクターブレード保持状態及び解除状態で示す概略断面図(A), (b) is a schematic sectional drawing which shows the BB arrow cross section of FIG. 1 in a doctor blade holding state and a cancellation | release state, respectively. 図１のＣ−Ｃ矢視断面図CC sectional view of FIG. 図１に示すドクターホルダーを分解して示す概略断面図1 is a schematic cross-sectional view showing the doctor holder shown in FIG. 図１に示すドクターホルダーを分解して示す概略平面図FIG. 1 is an exploded schematic plan view of the doctor holder shown in FIG. （ａ）、（ｂ）それぞれ、支点部材の一部の概略平面図及び概略断面図(A), (b) respectively, a schematic plan view and a schematic sectional view of a part of the fulcrum member （ａ）、（ｂ）は支点部材取付具に支点部材を取り付ける手順を示す概略断面図(A), (b) is a schematic sectional drawing which shows the procedure which attaches a fulcrum member to a fulcrum member fixture 従来のドクターホルダーの概略平面図Schematic plan view of a conventional doctor holder 従来のドクターホルダーの概略側面図Schematic side view of a conventional doctor holder

符号の説明Explanation of symbols

１０ ドクターホルダー
１１ ドクターブレード
１２ ホルダー本体
１２ａ 支持面
１２ｂ ねじ孔
１３ 背板
１４ ホルダー板
１４ａ 支持面
１４ｂ 当接面
１４ｃ 貫通孔
１５ 押圧手段
１８ 位置決めピン
１９ 取っ手
２２ 押さえ板
２３ 支点部材
２３ａ 挿入用穴
２３ｂ 溝
２３ｃ 段部
２４ 支点部材取付具
２４ａ ねじ部
２４ｂ 大径部
２４ｃ 小径部
２４ｄ 頭部
２５ 押圧用シャフト
２５ａ 平坦面
２５ｂ 円筒部
２８ 軸受部材
２９ 取っ手 DESCRIPTION OF SYMBOLS 10 Doctor holder 11 Doctor blade 12 Holder main body 12a Support surface 12b Screw hole 13 Back plate 14 Holder plate 14a Support surface 14b Contact surface 14c Through hole 15 Pressing means 18 Positioning pin 19 Handle 22 Holding plate 23 Support point member 23a Insertion hole 23b Groove 23c Step 24 Support point member attachment 24a Screw 24b Large diameter 24c Small diameter 24d Head 25 Press shaft 25a Flat surface 25b Cylindrical portion 28 Bearing member 29 Handle

Claims (3)

ドクターブレードを支持するホルダー本体と、該ホルダー本体との間に前記ドクターブレードをはさみ付けて保持するための剛性の大きいホルダー板と、前記ドクターブレードを前記ホルダー本体とホルダー板ではさみ付けて保持するよう該ホルダー板を前記ホルダー本体に押し付ける押圧手段とを備え、該押圧手段が、先端が前記ホルダー板の上面に位置し、後端が前記ホルダー板の後端よりも後ろに延び出すように配置された押さえ板と、該押さえ板の先端と後端との間の中間領域の上に配置された支点部材であって、前記押さえ板の後端を持ち上げた際に該押さえ板が前記支点部材を支点として旋回するように前記押さえ板を支持する支点部材と、前記押さえ板の後端の下に位置するように前記ホルダー本体に回転可能に保持され、回転角度位置を変えることで前記押さえ板の後端を持ち上げ、該押さえ板を前記支点部材を支点として旋回させる押圧用シャフトとを有するドクターホルダー。   A holder main body for supporting the doctor blade, a rigid holder plate for holding the doctor blade between the holder main body, and holding the doctor blade between the holder main body and the holder plate. Pressing means for pressing the holder plate against the holder body, the pressing means being arranged such that the tip is located on the upper surface of the holder plate and the rear end extends behind the rear end of the holder plate And a fulcrum member disposed on an intermediate region between the front end and the rear end of the presser plate, and when the rear end of the presser plate is lifted, the presser plate is the fulcrum member A fulcrum member that supports the pressing plate so as to turn around the fulcrum, and is rotatably held by the holder body so as to be positioned below the rear end of the pressing plate. Lift the rear end of the pressing plate by changing the angular position, the doctor holder and a pressing shaft for pivoting presser plate as a fulcrum the fulcrum member. 前記支点部材が、前記押さえ板の全長にほぼ等しい長さの棒材で形成されていることを特徴とする請求項１記載のドクターホルダー。   The doctor holder according to claim 1, wherein the fulcrum member is formed of a bar having a length substantially equal to the entire length of the pressing plate. 前記ドクターブレードとホルダー板の間に、先端を該ホルダー板の先端より延び出させる形態で背板が配置されており、該背板を前記ホルダー板に固定していることを特徴とする請求項１又は２記載のドクターホルダー。   The back plate is arranged between the doctor blade and the holder plate in such a manner that the tip extends from the tip of the holder plate, and the back plate is fixed to the holder plate. The doctor holder according to 2.
JP2007206424A 2007-08-08 2007-08-08 Doctor holder Active JP5076722B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010242283A (en) * 2009-03-31 2010-10-28 Runtech Systems Oy Apparatus and method for pivotal mounting of doctor blade assembly in paper machine
JP2011218572A (en) * 2010-04-05 2011-11-04 Ihi Corp Blade holding device
CN103847223A (en) * 2012-11-29 2014-06-11 海德堡印刷机械股份公司 Squeegee device of printer
CN107249889A (en) * 2015-03-17 2017-10-13 株式会社藤仓 Doctor blade device, printing equipment, the manufacture method of printing process and wiring substrate
KR102604696B1 (en) * 2023-02-28 2023-11-24 대원산업(주) Package Film Manufacturing System That Can Reduce Hazardous Materials Using Gravure Roll With Low-Depth Cell

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0781031A (en) * 1993-09-10 1995-03-28 Dainippon Printing Co Ltd Doctor device
JPH1034873A (en) * 1996-07-23 1998-02-10 Dainippon Printing Co Ltd Doctor holder
JPH10272757A (en) * 1997-03-28 1998-10-13 Dainippon Printing Co Ltd Doctor holder
JPH1158673A (en) * 1997-08-20 1999-03-02 Fuji Kikai Kogyo Kk Doctor blade attaching structure
JP2003080667A (en) * 2001-09-14 2003-03-19 Toppan Printing Co Ltd Doctor device and printing press equipped therewith

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0781031A (en) * 1993-09-10 1995-03-28 Dainippon Printing Co Ltd Doctor device
JPH1034873A (en) * 1996-07-23 1998-02-10 Dainippon Printing Co Ltd Doctor holder
JPH10272757A (en) * 1997-03-28 1998-10-13 Dainippon Printing Co Ltd Doctor holder
JPH1158673A (en) * 1997-08-20 1999-03-02 Fuji Kikai Kogyo Kk Doctor blade attaching structure
JP2003080667A (en) * 2001-09-14 2003-03-19 Toppan Printing Co Ltd Doctor device and printing press equipped therewith

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010242283A (en) * 2009-03-31 2010-10-28 Runtech Systems Oy Apparatus and method for pivotal mounting of doctor blade assembly in paper machine
JP2011218572A (en) * 2010-04-05 2011-11-04 Ihi Corp Blade holding device
CN103847223A (en) * 2012-11-29 2014-06-11 海德堡印刷机械股份公司 Squeegee device of printer
CN107249889A (en) * 2015-03-17 2017-10-13 株式会社藤仓 Doctor blade device, printing equipment, the manufacture method of printing process and wiring substrate
KR102604696B1 (en) * 2023-02-28 2023-11-24 대원산업(주) Package Film Manufacturing System That Can Reduce Hazardous Materials Using Gravure Roll With Low-Depth Cell

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