JPS61290053A - Excess dampening water removing mechanism of offset press - Google Patents
Excess dampening water removing mechanism of offset pressInfo
- Publication number
- JPS61290053A JPS61290053A JP13259485A JP13259485A JPS61290053A JP S61290053 A JPS61290053 A JP S61290053A JP 13259485 A JP13259485 A JP 13259485A JP 13259485 A JP13259485 A JP 13259485A JP S61290053 A JPS61290053 A JP S61290053A
- Authority
- JP
- Japan
- Prior art keywords
- water
- roller
- dampening water
- dampening
- transferring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/007—Removing water from ink trains
Landscapes
- Rotary Presses (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はオフセット印刷機の過剰湿し水除去機構に関し
、一層詳細には湿し水転移ローラを構成するローラ群の
少なくともいずれか一〇ローラの両＠縁部を所定量膨径
することにより、余剰の水を除去し版胴の版面に転移す
る水膜の厚さを均一にして品質の優れた印刷物を得るこ
とを可能にしたオフセット印刷機の過剰湿し水除去機構
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an excess dampening water removal mechanism for an offset printing press, and more particularly, the present invention relates to an excess dampening water removal mechanism for an offset printing press, and more particularly, the present invention relates to an excess dampening water removal mechanism for an offset printing press. Excess dampening water removal for offset printing presses that uses quantitative expansion to remove excess water and uniformize the thickness of the water film transferred to the plate surface of the plate cylinder, making it possible to obtain high-quality printed matter. Regarding the mechanism.
一般に、オフセット印刷ではインキと湿し水が境界をつ
くることにより、着肉部（画線部）にはインキだけが付
着し、保水部（非画線部）には水だけが付着して所望の
印刷物が出来る。Generally, in offset printing, by creating a boundary between the ink and dampening water, only the ink adheres to the inked area (image area), and only water adheres to the water retention area (non-image area), resulting in the desired can be printed.
このため、版面に供給される湿し水は全体的に均一で所
定の厚さをもった水膜であることが望ましい。For this reason, it is desirable that the dampening water supplied to the printing plate be a water film that is uniform throughout and has a predetermined thickness.
従来技術に係るオフセット印刷機では、金属製の軸にゴ
ムを巻き、その上に布等を巻装したローラによって構成
される湿し水装置が広汎に採用されてきた。この場合、
版胴の版面への湿し水の供給は水種しローラを往復移動
させ、これによって湿し水を間欠的に隣接する他のロー
ラに転移させるものであるため、湿し水の供給量の微妙
な調整が困難となる不都合が存在していた。また、前記
ローラに１装着される布は所定期間経過後に交換するこ
とが必要であり、このために当該布等の頻繁な巻き換え
作業が作業者にとって極めて煩雑となる欠点が指摘され
ていた。BACKGROUND OF THE INVENTION In conventional offset printing presses, dampening water devices have been widely used, which are comprised of rollers on which rubber is wrapped around a metal shaft and cloth or the like is wrapped thereon. in this case,
The supply of dampening water to the plate surface of the plate cylinder involves reciprocating the water seeding roller, which intermittently transfers the dampening water to other adjacent rollers. There was an inconvenience that made delicate adjustments difficult. Further, it has been pointed out that the cloth attached to the roller must be replaced after a predetermined period of time, and that the frequent rewinding work of the cloth is extremely troublesome for the operator.
そこで、湿し水供給量の微妙な調整を容易にし、布等の
頻繁な巻き換えの煩わしさをなくすために、回転軸にゴ
ムだけを巻回して構成されるローラを用いた湿し水の連
続供給装置が採用されるに至っている。この種の湿し水
の連続供給装置を第１図に示す。Therefore, in order to make it easier to finely adjust the amount of dampening water supplied and to eliminate the trouble of frequently rewinding cloth, etc., we have developed a dampening solution using a roller made up of only rubber wrapped around a rotating shaft. Continuous feeding equipment has come to be adopted. This type of continuous dampening water supply device is shown in FIG.
すなわち、この湿し水供給装置は、水舟２に貯留された
水にその一部を浸漬された水出しローラ４を回転させる
ことにより、その表面に水膜を付着させ、ライダローラ
６により水量を調整した上で、次に、水種しローラ８に
その水膜を転移させている。次いで、長手方向に所定の
往復移動をする水均しローラ１０にその水膜を転移し、
さらに水着はローラ１２に転移させることにより、最終
的に版胴１４の版面１６へ湿し水供給を行っている。That is, this dampening water supply device rotates the water dispenser roller 4, which is partially immersed in water stored in the water boat 2, to deposit a water film on the surface of the roller, and the amount of water is reduced by the rider roller 6. After the adjustment, the water film is then transferred to the water seeding roller 8. Next, the water film is transferred to a leveling roller 10 that makes a predetermined reciprocating movement in the longitudinal direction,
Furthermore, by transferring the swimsuit to the roller 12, dampening water is finally supplied to the plate surface 16 of the plate cylinder 14.
ところが、この種の湿し水装置において、各ローラ４乃
至１２間のニップで湿し水の厚さが均一化されるとき、
過剰な湿し水が、図中、斜線で示す各ローラ４乃至１２
および版面１６の両端部分に移行し、前記部分に付着す
るという傾向があった。すなわち、実測によれば、版胴
における斜線部分の水膜厚はその内側の均一な湿し水の
水膜厚よりも約３乃至４倍の厚みに到達し、また、その
幅は約１０ｍに至ることが確認された。However, in this type of dampening water device, when the thickness of dampening water is made uniform in the nip between each roller 4 to 12,
Excess dampening water is applied to each roller 4 to 12 indicated by diagonal lines in the figure.
There was also a tendency for the particles to migrate to both end portions of the plate surface 16 and adhere to these portions. In other words, according to actual measurements, the thickness of the water film in the shaded area of the plate cylinder is about 3 to 4 times thicker than the uniform water film of dampening water inside the plate cylinder, and its width is about 10 m. It was confirmed that this was achieved.
この結果、前記過剰な湿し水がインキを乳化させたり、
版面から他の部分に飛散したり、また、インキ供給側へ
移行して印刷に悪影響を与えるという欠点があった。As a result, the excess dampening water emulsifies the ink,
This has the disadvantage that it scatters from the printing plate to other parts, or migrates to the ink supply side, adversely affecting printing.
本発明は前記の不都合を克服するためになされたもので
あって、オフセット印刷機にお（１て、湿し水装置を構
成するいずれかのローラの両端縁部を所定量膨径するこ
とにより、版胴に対して最適な量の湿し水を供給すると
共に印刷精度に優れ、且つ、インキの乳化等の現象を回
避出来る過剰湿し水除去機構を提供することを目的とす
る。The present invention has been made in order to overcome the above-mentioned disadvantages, and provides an offset printing machine (1) by expanding the diameter of both ends of one of the rollers constituting the dampening water device by a predetermined amount. It is an object of the present invention to provide an excess dampening water removal mechanism that can supply an optimal amount of dampening water to a plate cylinder, have excellent printing accuracy, and avoid phenomena such as emulsification of ink.
前記の目的を達成するために、本発明は印刷機を構成し
版胴に湿し水を転移する複数個のローラの中、少なくと
もいずれか一のローラの両端縁部を膨径可能に構成する
ことを特徴とする。In order to achieve the above object, the present invention comprises a plurality of rollers that constitute a printing press and transfer dampening water to a plate cylinder, and at least one of the rollers has both end edges expandable. It is characterized by
次に、本発明に係るオフセット印刷機の過剰湿し水除去
機構を含む湿し水装置について好適な実施例を挙げ、添
付の図面を参照しながら以下詳細に説明する。Next, a preferred embodiment of a dampening water device including an excess dampening water removal mechanism for an offset printing press according to the present invention will be described in detail with reference to the accompanying drawings.
なお、本実施例では、湿し水装置を構成する水種しロー
ラに本発明に係る湿し水除去機構を設けるものとする。In this embodiment, the dampening water removing mechanism according to the present invention is provided in the water sorting roller constituting the dampening water device.
そこで、第２図において、参照符号２０は水舟を示す。Therefore, in FIG. 2, reference numeral 20 indicates a water boat.
この場合、前記水舟２０には図示しない湿し水供給用給
水管並びに排水管を設けており、この水舟２０内に貯留
される湿し水の水面高さを一定に確保している。そして
、前記湿し水にその一部を浸漬するように水出しローラ
２２を配設する。前記水出しローラ２２の一端部には歯
車２４が装着されており、この歯車２４に噛合する歯車
２６は本発明に係る湿し水除去機構を構成する水種しロ
ーラ２８に装着されている。従って、水出しローラ２２
の回転駆動はこの水種しローラ２８に伝えられる。さら
に、前記水種しローラ２８は水均しローラ３０に当接し
ており、前記水均しローラ３０は図示しない駆動源の作
用下に・回転並びに矢印方向に変位可能に構成される。In this case, the water cannon 20 is provided with a dampening water supply pipe and a drain pipe (not shown) to ensure a constant water surface height of the dampening water stored in the water cannon 20. Then, the dampening roller 22 is disposed so as to partially immerse it in the dampening water. A gear 24 is attached to one end of the water dispenser roller 22, and a gear 26 that meshes with the gear 24 is attached to a water dispenser roller 28 constituting the dampening water removal mechanism according to the present invention. Therefore, the pouring roller 22
The rotational drive of is transmitted to this water seeding roller 28. Furthermore, the water leveling roller 28 is in contact with a leveling roller 30, and the leveling roller 30 is configured to be rotatable and displaceable in the direction of the arrow under the action of a drive source (not shown).
この場合、水均しローラ３０と水移しローラ２８とは夫
々別駆動されるため、作業中において夫々のローラ２８
と３０との当接面はスリップ状態となる。なお、前記水
均しローラ３０は水着はローラ３２に当接しており、一
方、この水着はローラ３２に当接するように版胴３４が
配設されている。In this case, since the leveling roller 30 and the water transfer roller 28 are driven separately, each roller 28 is driven separately during the work.
The contact surfaces between and 30 are in a slipping state. The water leveling roller 30 is in contact with a roller 32 in the swimsuit, and a plate cylinder 34 is disposed so as to be in contact with the roller 32 in the swimsuit.
次に、本発明に係る湿し水除去機構を構成す′る水移し
ローラ２８について詳細に説明する。Next, the water transfer roller 28 constituting the dampening water removal mechanism according to the present invention will be explained in detail.
すなわち、第３図および第４図に示すように、水移しロ
ーラ２８の金属、例えば、鋼材からなる柱体部３６の両
側部からは軸線方向に夫々所定深さまで円筒形状の開口
部３８ａ、３８ｂを形成する。That is, as shown in FIGS. 3 and 4, cylindrical openings 38a and 38b extend in the axial direction from both sides of the columnar portion 36 made of metal, for example, steel, to a predetermined depth, respectively. form.
このため、前記柱体部３６の両端縁部には夫々所定の長
さの円筒部４０ａ、４０ｂが形成される。そして、夫々
の円筒部４０ａ、４０ｂの外周部には軸線方向に複数の
スワン）４２ａ、４２ｂを画成しておく。さらに、前記
円筒部４０ａ、４０ｂの中央部には夫々第１のロッド部
４４ａ、４４ｂが外方に指向して軸線方向に延在し、前
記第１０ンド部４４ａ、４４ｂの一端部側には夫々段部
を介して小径な第２のロッド部４６ａ、４６ｂが延在す
る。前記第２０ンド部４６ａ、４６ｂと第１０ツド部４
４ａ、４４ｂの境界部位には所定長さに亘りねじ溝４８
ａ、４８ｂを刻設しておく。For this reason, cylindrical portions 40a and 40b having a predetermined length are formed at both end edges of the columnar portion 36, respectively. A plurality of swans 42a, 42b are defined in the axial direction on the outer periphery of each of the cylindrical portions 40a, 40b. Further, first rod portions 44a and 44b are oriented outward and extend in the axial direction at the center portions of the cylindrical portions 40a and 40b, respectively, and at one end side of the tenth rod portions 44a and 44b. Second rod portions 46a, 46b each having a small diameter extend through the stepped portions. The 20th end portions 46a, 46b and the 10th end portion 4
A thread groove 48 is provided over a predetermined length at the boundary between 4a and 44b.
Mark a and 48b.
このような構成において、夫々の開口部３８ａ、３８ｂ
に嵌合部材５Ｑａ、５０ｂを嵌合する。すなわち、前記
嵌合部材５０ａ、５０ｂの中央部には軸線方向に孔部５
２ａ、５２ｂが穿設されており、さらに前記孔部５２ａ
、５２ｂの一端部側は夫々螺孔５３ａ、５３ｂと連通ず
る。また、嵌合部材５０ａ ５０ｂの外周部には夫々所
定の角度を有するテーパ部５４ａ、５４ｂを形成し、前
記テーパ部５４ａ、５４ｂの大径な端部に夫々フランジ
部５５ａ、５６ｂを形成する。In such a configuration, each opening 38a, 38b
The fitting members 5Qa and 50b are fitted into the fitting members 5Qa and 50b. That is, the fitting members 50a and 50b have a hole 5 in the central part in the axial direction.
2a, 52b are bored, and the hole 52a
, 52b communicate with the screw holes 53a, 53b, respectively. Further, tapered portions 54a and 54b having predetermined angles are formed on the outer peripheral portions of the fitting members 50a and 50b, respectively, and flange portions 55a and 56b are formed on the large diameter ends of the tapered portions 54a and 54b, respectively.
この場合、前記フランジ部５６ａ、５６ｂには所定の幅
員を有する複数の溝部５７ａ、５７ｂを刻設しておく。In this case, a plurality of groove portions 57a, 57b having a predetermined width are cut into the flange portions 56a, 56b.
そこで、孔部５２ａ、５２ｂに第１０ツド部４４ａ、４
４ｂを嵌合すると共に、嵌合部材５０ａ、５０ｂを螺回
してテーパ部５４ａ、５４ｂを径の小さな方から夫々の
開口部３８ａ、３８ｂ内に挿入する。Therefore, the holes 52a, 52b are provided with the tenth joints 44a, 4.
4b, and the fitting members 50a, 50b are screwed to insert the tapered portions 54a, 54b into the respective openings 38a, 38b from the one with the smaller diameter.
さらにまた、第２０ツド部４６ａには嵌合部材５０ｂに
近接して歯車２６を固着し、一方、柱体部３６には円筒
状のゴム部材５８を外嵌装着しておく。なお、第２０ン
ド部４６ａ並びに歯車２６に穿設された複数の孔部５９
ａ、５９ｂは、嵌合部材５０ａ、５０ｂを螺回する際に
水移しローラ２８が回転することがないように棒体等を
挿入するためのものである。Furthermore, a gear 26 is fixed to the 20th prong 46a in proximity to the fitting member 50b, while a cylindrical rubber member 58 is externally fitted onto the column 36. Note that the plurality of holes 59 bored in the 20th end portion 46a and the gear 26
a and 59b are for inserting rods or the like so that the water transfer roller 28 does not rotate when screwing the fitting members 50a and 50b.
本発明に係る湿し水除去機構を含む湿し水装置は基本的
には以上のように構成されるものであり、次にその作用
並びに効果について説明する。The dampening water device including the dampening water removing mechanism according to the present invention is basically constructed as described above, and its operation and effects will be explained next.
先ず、水移しローラ２８の両端縁部を所定量膨径させる
。すなわち、フランジ部５６ａ、５６ｂの溝部５７ａ、
５７ｂにスパナ等の工具を係合すると共に夫々の孔部５
９ａ、５９ｂに棒体等を挿入して嵌合部材５０ａ、５０
ｂを夫々円筒部４０ａ、４０ｂの内方に指向して螺回す
れば、夫々のテーパ部５４ａ、５４ｂが前記開口部３８
ａ、３８ｂ内にＨ’Ｒ人して円筒部４０ａ、４０ｂを半
径外方向に押圧する。前記円筒部４０ａ、４０ｂは薄肉
形状を有すると共に、その外周部に複数のスワン）４２
ａ、４２ｂを形成しているため、前記嵌合部材５０ａ、
５０ｂの押圧力により夫々の円筒部４０ａ、４０ｂは半
径外方向に拡開する。そこで、前記円筒部４Ｑａ、４０
ｂが所定量膨出した位置において嵌合部材５０ａ、５０
ｂを、例えば、止めねじ等を介して固定する。このよう
にして、水移しローラ２８の両端縁部には所定量径を大
きくする膨径部６０ａ、６０ｂが設けられることになる
。First, both end edges of the water transfer roller 28 are expanded in diameter by a predetermined amount. That is, the groove portions 57a of the flange portions 56a, 56b,
57b with a tool such as a spanner, and each hole 5
Fitting members 50a, 50 are inserted by inserting rods etc. into 9a, 59b.
b are turned inwardly into the cylindrical portions 40a, 40b, respectively, so that the respective tapered portions 54a, 54b are aligned with the openings 38.
a, 38b and press the cylindrical portions 40a, 40b in the radial outward direction. The cylindrical parts 40a and 40b have a thin shape, and a plurality of swans 42 are formed on the outer periphery of the cylindrical parts 40a and 40b.
a, 42b, the fitting member 50a,
The respective cylindrical portions 40a and 40b expand in the radial outward direction due to the pressing force of the cylindrical portion 50b. Therefore, the cylindrical portions 4Qa, 40
The fitting members 50a, 50
b is fixed, for example, via a set screw or the like. In this way, both end edges of the water transfer roller 28 are provided with expanded diameter portions 60a and 60b that increase the diameter by a predetermined amount.
そこで、図示しない回転駆動源の作用下に水出しローラ
２２を所定方向に回転させると、これに装着された歯車
２４が回転し、さらに前記歯車２４に噛合する歯車２６
を介して水移しローラ２８が回転する。この場合、水出
しローラ２２は水舟２０内に貯留される湿し水にその一
部を浸漬されており、従って、前記水出しローラ２２の
表面には水膜が付着され、前記水膜は水移しローラ２８
に転移される。その際、水出しローラ２２から水移しロ
ーラ２８に移送されろ水膜はローラ２２とローラ２８と
の圧接状態により過剰な湿し水の一部を水舟２０内に滴
下させると共に、他の部分を水移しローラ２８の両端部
側に移行させる。ここで、前記水移しローラ２８の両端
縁部にはその中央部に比べ所定量径の大きな膨径部５Ｑ
ａ、６０ｂを設けているため、前記膨径部６０ａ、６０
ｂと水出しローラ２２との圧接状態は他の部分に比べ大
きなものとなる。このために、夫々の膨径部６０ａ。Therefore, when the brewing roller 22 is rotated in a predetermined direction under the action of a rotational drive source (not shown), the gear 24 attached thereto rotates, and the gear 26 that meshes with the gear 24 rotates.
The water transfer roller 28 is rotated via. In this case, the water dispenser roller 22 is partially immersed in the dampening water stored in the water boat 20, and therefore a water film is attached to the surface of the water dispenser roller 22, and the water film is Water transfer roller 28
will be transferred to. At this time, a part of the excess dampening water is transferred from the water dispenser roller 22 to the water transfer roller 28 and drips into the water bucket 20 due to the pressurized state between the roller 22 and the roller 28, and other parts are is transferred to both ends of the water transfer roller 28. Here, at both end edges of the water transfer roller 28, an expanded diameter portion 5Q having a predetermined larger diameter than the center portion thereof is provided.
a, 60b, the enlarged diameter portions 60a, 60
The state of pressure contact between b and the pouring roller 22 is greater than in other parts. For this purpose, the respective enlarged diameter portions 60a.
６０ｂに移行した余剰な湿し水は水舟２０内に滴下され
、水移しローラ２８には均一厚さの水膜が得られる。The excess dampening water transferred to 60b is dripped into the water boat 20, and a water film of uniform thickness is obtained on the water transfer roller 28.
さらに、この水移しローラ２８に当接して図示しない駆
動源の作用下に回転並びに所定方向の変位を行う水均し
ローラ３０には、前記水移しローラ２８からの水膜が移
送される。その際、ローラ２８と３０とはスリップ状態
で当接しているため、前記水均しローラ３０に転移され
ろ水膜はかなりの薄膜となる。また、この場合において
も、水移しローラ２８から水均しローラ３０に移送転移
されろ水膜の余剰な部分は、前記水均しローラ３０の両
端部側に指向して移行される。然しなから、この水移し
ローラ２８の両端部側に膨径部６０ａ、６０ｂを設けて
いるために、水均しローラ３ｏに転移されろ水膜は軸線
方向において均一な水膜厚さとなることが出来る。Further, the water film from the water transfer roller 28 is transferred to a water leveling roller 30 that comes into contact with the water transfer roller 28 and rotates and is displaced in a predetermined direction under the action of a drive source (not shown). At this time, since the rollers 28 and 30 are in contact with each other in a slipping state, the water film transferred to the leveling roller 30 becomes a considerably thin film. Also in this case, the excess portion of the filter film transferred from the water transfer roller 28 to the leveling roller 30 is transferred toward both ends of the leveling roller 30. However, since the expanded diameter portions 60a and 60b are provided at both ends of the water transfer roller 28, the water film transferred to the leveling roller 3o has a uniform water film thickness in the axial direction. I can do it.
次いで、前記水均しローラ３０から水着はローラ３２に
移送される水膜はさらに版胴３４に転移され、前記版胴
３４の版面上には極めて厚さの均一な水膜層が得られる
。そこで、前記水膜と図示しないインキとを介して好適
なオフセット印刷が行われる。Next, the water film transferred from the leveling roller 30 to the swimsuit roller 32 is further transferred to the plate cylinder 34, and a water film layer of extremely uniform thickness is obtained on the plate surface of the plate cylinder 34. Therefore, suitable offset printing is performed via the water film and ink (not shown).
次に、本発明に係る湿し水除去機構の他の実施例を第５
図に示す。Next, another example of the dampening water removal mechanism according to the present invention will be described in the fifth example.
As shown in the figure.
すなわち、この場合、水移しローラ２８ａを構成する柱
体部３６ａの両端部からは夫々軸線方向に円筒形状の開
口部３８ｃ、３８ｄを画成して極めて薄肉形状の円筒部
４０ｃ、４０ｄを形成する。さらに、夫々の円筒部４０
ｃ、４０ｄの中央部から外方に指向して夫々ロッド部６
２ａ、６２ｂが延在している。そして、夫々のロッド部
６２ａ、６２ｂには通路５６ａ、６６ｂを形成しており
、夫々の通路６６、！、６６ｂの一端部側は屈曲して開
口部６４ａ１６４ｂに連通し、一方、通路６６ａ、６６
ｂの他端部側はロッド部６２ａ、６２ｂの軸線方向に延
在して外部に連通している。そこで、前記ロフト部６２
ａ、６２ｂにロータリージヨイント６８ａ、６８ｂを装
着する。この場合、前記ロータリージヨイント６８ａ、
６８ｂには流体、例えば、圧力空気を供給する図示しな
いポンプ等に連通する管体７Ｑａ、７０ｂを設けており
、通路５５ａ、６６ｂはこの管体７０ａ、７０ｂを介し
て前記ポンプに連通している。さらにまた、円筒部４０
ｃ、４０ｄとロッド部６２ａ、６２ｂには気密性を保持
するようにカバー部材７２ａ、７２ｂを装着しておく。That is, in this case, cylindrical openings 38c and 38d are defined in the axial direction from both ends of the columnar portion 36a constituting the water transfer roller 28a, thereby forming extremely thin cylindrical portions 40c and 40d. . Furthermore, each cylindrical portion 40
The rod portions 6 are directed outward from the central portions of c and 40d, respectively.
2a and 62b extend. Passages 56a, 66b are formed in the respective rod portions 62a, 62b, and the respective passages 66, ! , 66b are bent and communicate with the opening 64a164b, while the passages 66a, 66
The other end side of b extends in the axial direction of the rod portions 62a, 62b and communicates with the outside. Therefore, the loft portion 62
Attach rotary joints 68a and 68b to a and 62b. In this case, the rotary joint 68a,
68b is provided with pipes 7Qa and 70b that communicate with a pump (not shown) that supplies fluid, such as pressurized air, and passages 55a and 66b communicate with the pump via these pipes 70a and 70b. . Furthermore, the cylindrical portion 40
Cover members 72a and 72b are attached to c and 40d and the rod portions 62a and 62b to maintain airtightness.
なお、柱体部３６ａには円筒状のゴム部材５８ａを固着
する。Note that a cylindrical rubber member 58a is fixed to the columnar portion 36a.
このような構成において、図示しないポンプから管体７
０ａ、７０ｂに所定圧の空気を供給すれば、前記圧力空
気はロータリージヨイント６８ａ２６８ｂを介して通路
５５ａ、６６ｂに供給された後、夫々の開口部３３ｃ、
３８ｄ内に導入される。前記開口部３８ｃ、３８ｄを画
成する円筒部４０ｃ、４０ｄは極めて薄肉状に形成され
ているため、前記円筒部４Ｑｃ、４０ｄは夫々の開口部
３８ｃ、３８ｄに供給される圧力空気により押圧されて
半径外方向に膨径し、それに伴ってカバー部材７２ａ、
７２ｂが前記開口部３８Ｃ１３８ｄ内に指向して僅かに
変位する。このようにして、水移しローラ２８ａの両端
縁部に所定量径を大きくする膨径部６０ｃ、６０ｄを設
けて後、図示しないポンプの駆動を停止する。そして、
第１の実施例において説明した手順により、湿し水の供
給作業を行えばよい。In such a configuration, the pipe body 7 is connected to the pump (not shown).
0a, 70b, the pressurized air is supplied to the passages 55a, 66b via the rotary joint 68a, 268b, and then to the respective openings 33c,
38d. Since the cylindrical portions 40c and 40d that define the openings 38c and 38d are formed to be extremely thin, the cylindrical portions 4Qc and 40d are pressed by the pressurized air supplied to the respective openings 38c and 38d. The diameter expands in the radial outward direction, and the cover member 72a,
72b is slightly displaced toward the inside of the opening 38C138d. After the expanded diameter portions 60c and 60d that increase the diameter by a predetermined amount are provided at both end edges of the water transfer roller 28a in this manner, the drive of the pump (not shown) is stopped. and,
The dampening water supply operation may be performed according to the procedure described in the first embodiment.
さらにまた、この第２の実施例では、夫々のロッド部６
２ａ、６２ｂにロータリージヨイント６８ａ５６８ｂを
装着しているため、湿し水供給作業中において管体７０
ａ、７０ｂに圧力空気の供給、または、排出を行うこと
により膨径部６０ｃ、６０ｄの径を調整することが出来
る。従って、装置を停止させることなく湿し水の供給量
を調整することが可能となり、より一層効果的な湿し水
供給作業が達成される。Furthermore, in this second embodiment, each rod portion 6
Since rotary joints 68a and 568b are attached to 2a and 62b, the pipe body 70 is
The diameters of the expanded diameter portions 60c and 60d can be adjusted by supplying or discharging pressurized air to a and 70b. Therefore, it is possible to adjust the amount of dampening water supplied without stopping the apparatus, and even more effective dampening water supply work can be achieved.
以上のように本発明によれば、湿し水供給装置を構成す
るローラ群の中、例えば、水移しローラの両端縁部を所
定量膨出して湿し水供給作業を行っている。このため、
ローラの両端部側に移行される余剰な湿し水を好適に除
去することが出来、版胴上に転移される湿し水の水膜の
厚さが全体に亘り均一なものとなる。従って、従来、余
剰な湿し水とインキとが混在して惹起された乳化等の不
都合を回避して品質精度の優れた印刷物を得ることが可
能となる。しかも、膨径部の径を容易に選択することが
出来、種々の印刷に使用されてより一層汎用性のある湿
し水装置を提供する効果がある。As described above, according to the present invention, among the roller group constituting the dampening water supply device, for example, both end edges of the water transfer roller are bulged by a predetermined amount to perform the dampening water supply operation. For this reason,
Excess dampening water transferred to both ends of the roller can be suitably removed, and the thickness of the dampening water film transferred onto the plate cylinder becomes uniform over the entire surface. Therefore, it is possible to avoid inconveniences such as emulsification caused by the mixture of excess dampening water and ink, and to obtain printed matter with excellent quality and precision. In addition, the diameter of the expanded diameter portion can be easily selected, which has the effect of providing a more versatile dampening water device that can be used for various types of printing.
以上、本発明について好適な実施例を挙げて説明したが
、本発明はこの実施例に限定されるものではなく、例え
ば、水移しローラに代替して他のローラにも使用するこ
とが出来る等、本発明の要旨を逸脱しない範囲において
種々の改良並びに設計の変更が可能なことは勿論であるAlthough the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments. For example, the present invention can be used with other rollers instead of the water transfer roller. Of course, various improvements and changes in design are possible without departing from the gist of the present invention.
第１図は従来の湿し水供給装置の概略説明図、第２図は
本発明に係る湿し水除去機構を含む湿し水供給装置の一
部省略斜視図、第３図は本発明に係る湿し水除去機構を
構成するコーラの一部断面斜視図、第４図は本発明に係
る湿し水除去機構を構成するローラの一部省略正面断面
図、第５図は本発明に係る湿し水除去機構の第２の実施
例を構成するローラの一部省略正面断面図である。
２０・・水舟 ２２・・水出しローラ２４
．２６・・歯車
２８．２８ａ・・水移しローラ
３０・・水均しローラ ３２・・水着はローラ３４
・・版胴 ３６．３６ａ・・柱体部３８ａ
〜３８ｄ・・開口部
４０ａ〜４０ｄ・・円筒部
、 ４２ａ、４２ｂ −−スリット４４ａ 、 ４
４ｂ 、４６ａ 、４６ｂ ・・ロッド部５０ａ、５０
ｂ −−嵌合部材
５４ａ、５４ｂ・・テーパ部
５６ａ、５６ｂ・・フランジ部
５日、５８ａ・・ゴム部材
６０ａ〜６０ｄ・・膨径部
６２ａ 、６２ｂ −・ロフト部 ６６ａ、６６ｂ・・
通路５３ａ、６８ｂ・・ロータリージヨイント７０ａ、
７０ｂ・・管体Fig. 1 is a schematic explanatory diagram of a conventional dampening water supply device, Fig. 2 is a partially omitted perspective view of a dampening water supply device including a dampening water removal mechanism according to the present invention, and Fig. 3 is a diagram showing a dampening water supply device according to the present invention. FIG. 4 is a partial cross-sectional perspective view of a roller constituting the dampening water removal mechanism according to the present invention, FIG. FIG. 7 is a partially omitted front sectional view of a roller constituting a second embodiment of the dampening water removal mechanism. 20..Mizufune 22..Draining roller 24
．． 26...Gear 28.28a...Water transfer roller 30...Water leveling roller 32...Swimsuit roller 34
... Plate cylinder 36.36a ... Column body part 38a
~38d...Opening portions 40a~40d...Cylindrical portion, 42a, 42b --Slits 44a, 4
4b, 46a, 46b...rod portions 50a, 50
b -- Fitting members 54a, 54b...Tapered portions 56a, 56b...Flange portion 58a...Rubber members 60a to 60d...Inflated diameter portions 62a, 62b--Loft portions 66a, 66b...
Passages 53a, 68b...Rotary joint 70a,
70b... tube body
Claims (3)
ローラの中、少なくともいずれか一のローラの両端縁部
を膨径可能に構成することを特徴とするオフセット印刷
機の過剰湿し水除去機構。(1) An offset printing machine characterized in that, among a plurality of rollers constituting the printing machine and transferring dampening water to the plate cylinder, both end edges of at least one roller are configured to be expandable in diameter. Excess dampening water removal mechanism.
ラの両端部に軸線方向に所定形状の開口部を画成して円
筒部を形成し、前記円筒部には軸線方向に延在する複数
のスリットを設け、一方、外周部にテーパ部を設けた嵌
合部材を前記開口部内に挿入してそのテーパ部により前
記円筒部を半径外方向に拡開してなるオフセット印刷機
の過剰湿し水除去機構。(2) In the mechanism according to claim 1, openings having a predetermined shape are defined in the axial direction at both ends of the roller to form a cylindrical portion, and the cylindrical portion has a cylindrical portion extending in the axial direction. Excessive moisture in an offset printing machine in which a fitting member having a plurality of slits and a tapered portion on the outer periphery is inserted into the opening and the tapered portion expands the cylindrical portion in a radial outward direction. Water removal mechanism.
ラの両端部に軸線方向に所定形状の開口部を画成して薄
肉状の円筒部を形成し、さらに、前記ローラの両端部か
ら延在し且つ流体用通路を有するロッド部と前記円筒部
とにカバー部材を装着して前記開口部を閉塞し、前記ロ
ッド部内の通路から前記開口部内に所定の圧力空気若し
くは圧油を導入して前記円筒部を半径外方向に膨径して
なるオフセット印刷機の過剰湿し水除去機構。(3) In the mechanism according to claim 1, openings of a predetermined shape are defined in the axial direction at both ends of the roller to form a thin-walled cylindrical part, and further, A cover member is attached to the cylindrical part and the rod part which extends and has a fluid passage to close the opening part, and a predetermined pressure air or pressure oil is introduced into the opening part from the passage in the rod part. An excess dampening water removal mechanism for an offset printing press, in which the diameter of the cylindrical portion is expanded in a radial outward direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13259485A JPS61290053A (en) | 1985-06-17 | 1985-06-17 | Excess dampening water removing mechanism of offset press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13259485A JPS61290053A (en) | 1985-06-17 | 1985-06-17 | Excess dampening water removing mechanism of offset press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61290053A true JPS61290053A (en) | 1986-12-20 |
Family
ID=15084990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13259485A Pending JPS61290053A (en) | 1985-06-17 | 1985-06-17 | Excess dampening water removing mechanism of offset press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61290053A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02215531A (en) * | 1988-12-23 | 1990-08-28 | Harris Graphics Corp | Humidifier |
| US5454310A (en) * | 1994-11-16 | 1995-10-03 | Varn Company | Segmented oscillating fluid evaporator roller for printing presses |
| JP2008254366A (en) * | 2007-04-06 | 2008-10-23 | Komori Corp | Water supplying device for printing machine |
-
1985
- 1985-06-17 JP JP13259485A patent/JPS61290053A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02215531A (en) * | 1988-12-23 | 1990-08-28 | Harris Graphics Corp | Humidifier |
| US5454310A (en) * | 1994-11-16 | 1995-10-03 | Varn Company | Segmented oscillating fluid evaporator roller for printing presses |
| JP2008254366A (en) * | 2007-04-06 | 2008-10-23 | Komori Corp | Water supplying device for printing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5245923A (en) | Printing press with movable printing blanket | |
| US5215013A (en) | Printing blanket with noise attenuation | |
| US5411462A (en) | Lightweight ink transfer roll | |
| JPH0327023B2 (en) | ||
| US20080173196A1 (en) | Sleeve for printing cylinder, printing machine and method of replacing inner peripheral layer of sleeve for printing cylinder | |
| US5370052A (en) | Method of controlling the quantity of printing ink and reconditioning used anilox rollers | |
| BRPI0711347B1 (en) | intermediate glove | |
| US7124685B2 (en) | Internally piped print cylinder and method for making same | |
| JPS61290053A (en) | Excess dampening water removing mechanism of offset press | |
| US4809606A (en) | Oscillating form roller and apparatus and method for controlling the oscillation thereof | |
| US5718171A (en) | Process and rotary printing machine for indirect rotogravure printing | |
| US20070181022A1 (en) | Apparatus and method for controlling the supply of fluid | |
| US5829350A (en) | Printing apparatus and method for printing the inner surface of a cylindrical object | |
| US5590597A (en) | Tapered bearing housing sleeves | |
| JPH03169555A (en) | Method to prepare for printing for printing device and usable printing device therefor | |
| KR20170063546A (en) | Blade device, and printer and coating apparatus provided with said blade device | |
| EP0712732B1 (en) | Ink supply device for stencil printing apparatus | |
| US5329850A (en) | Metering roller for a lithographic printing press | |
| JP2005288870A (en) | Printing machine and coating device | |
| JP3575861B2 (en) | Offset printing plate, plate cylinder of offset printing press, offset printing press, and method of manufacturing offset printing plate | |
| JP3621841B2 (en) | Ink roller bearing adjustment device | |
| JP2000272080A (en) | Dampening device for offset printing machine | |
| JPS6135952A (en) | Cylindrical screen printing press | |
| JPH0428759Y2 (en) | ||
| JPS61277450A (en) | Apparatus for removal of excess dampening water in press |