JP3122330B2 - Blanket torso - Google Patents
Blanket torsoInfo
- Publication number
- JP3122330B2 JP3122330B2 JP07095350A JP9535095A JP3122330B2 JP 3122330 B2 JP3122330 B2 JP 3122330B2 JP 07095350 A JP07095350 A JP 07095350A JP 9535095 A JP9535095 A JP 9535095A JP 3122330 B2 JP3122330 B2 JP 3122330B2
- Authority
- JP
- Japan
- Prior art keywords
- blanket
- blanket cylinder
- wear
- resistant coating
- sprayed
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明はオフセット輪転印刷機の
ブランケット胴に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blanket cylinder for an offset rotary printing press.
【０００２】[0002]
【従来の技術】図３（ａ）にオフセット輪転印刷機械の
印刷部主要部を示す。印刷版を取りつけた版胴１１は、
ブランケット（ゴム等で作られた中間転写体）を取りつ
けたブランケット胴１２に圧接している。これら版胴、
ブランケット胴は用紙１４を境に上下の機能が対象とな
るべく設けられており、上下のブランケット胴１２に用
紙１４をはさみ、印刷すると共に用紙を送る構造となっ
ている。このブランケット胴１２には、板状ブランケッ
ト１３を巻きつけ装着し、取付具１５にて板状ブランケ
ット１３が移動しない様に締めつける機構を有してい
る。2. Description of the Related Art FIG. 3A shows a main part of a printing unit of an offset rotary printing machine. The plate cylinder 11 with the printing plate attached,
It is pressed against a blanket cylinder 12 to which a blanket (an intermediate transfer member made of rubber or the like) is attached. These plate cylinders,
The blanket cylinder is provided so that upper and lower functions are targeted with the paper 14 as a boundary. The blanket cylinder 12 has a structure in which the paper 14 is sandwiched between the upper and lower blanket cylinders 12, and printing and feeding of the paper are performed. The blanket cylinder 12 has a mechanism in which a plate-shaped blanket 13 is wound around and attached to the blanket cylinder 12, and is fastened by an attachment 15 so that the plate-shaped blanket 13 does not move.
【０００３】また、図３（ｂ）には他のブランケット取
付け方法を示す。ブランケット胴１９の表面に設けられ
たここには示さない小孔から圧縮空気を吐出し、筒状ブ
ランケット１８を機械側方から装着する。装着後、圧縮
空気を止めると筒状ブランケット１８がブランケット胴
１９に締りばめとなり固定される。このブランケットが
装着された時の断面概要を図３（ｃ）に示す。ブランケ
ット胴１９の外側に筒状ブランケット１８が配せられる
が、ブランケット内部は例えば金属製円筒であるベース
材２０とゴム、スポンジ等からなるブランケット材２１
は強固に接着されており相互に移動することはない。ベ
ース材２０とブランケット胴１９の間は装着時には軸方
向に摺動移動可能であり、また回転方向にも回転する可
能性はある。FIG. 3B shows another blanket mounting method. Compressed air is discharged from a small hole (not shown) provided on the surface of the blanket cylinder 19, and the cylindrical blanket 18 is mounted from the side of the machine. After installation, when the compressed air is stopped, the tubular blanket 18 is tightly fitted to the blanket cylinder 19 and fixed. FIG. 3C shows an outline of a cross section when the blanket is mounted. A cylindrical blanket 18 is arranged outside the blanket cylinder 19. Inside the blanket, for example, a base material 20 which is a metal cylinder and a blanket material 21 made of rubber, sponge, etc.
Are firmly bonded and do not move with each other. The space between the base member 20 and the blanket cylinder 19 is slidable in the axial direction at the time of mounting, and may rotate in the rotational direction.
【０００４】図３に示したブランケット胴は、精密な印
刷に用いられるものであるから、表面の真円度、寸法は
５／１００ｍｍの精度で管理される必要があり、また印
刷プロセス、清掃プロセスで、使用される酸、水に対す
る腐蝕を防止するため、通常図３（ｄ）の通り鋼で成形
した胴１２ａを研磨し、クロムメッキ処理１６をもって
製造されている。また摩擦係数を上げるために、ショッ
トブラスト加工１７にて全体の平均寸法を保ちながら表
面粗度を上げることも実施されている。Since the blanket cylinder shown in FIG. 3 is used for precision printing, the roundness and dimensions of the surface need to be controlled with an accuracy of 5/100 mm. In order to prevent corrosion by the acid and water used, the body 12a usually made of steel is polished as shown in FIG. In order to increase the coefficient of friction, the surface roughness is also increased by shot blasting 17 while maintaining the overall average size.
【０００５】[0005]
【発明が解決しようとする課題】従来のブランケット胴
は、ブランケットを装着して使用している間にブランケ
ットがずれる問題があった。図３（ａ）に示すもので
は、ずれることでブランケットがゆるむため、装着後適
宜取付具１５によって増し締めする必要がある。また図
３（ｂ）に示すものでは、筒状ブランケット１８がブラ
ンケット胴１９の上を回転するため、図４に示すように
ブランケット１８とブランケット胴１９に付した合せマ
ークが使用中にずれてブランケット胴１９の表面が摩耗
する問題がある。この時は、図３（ａ）のものの様に増
し締めすることはできない。また、図５に示す様な回わ
り止め２３をブランケット１８とブランケット胴１９の
間に設けることは、ブランケット１８の厚さ不均一から
印刷の濃淡を生じさせるため、実用上使用できない。こ
のため、ブランケット１８とブランケット胴１９の間の
摩擦によって保持する必要があるが前述の通り印刷機に
適用するためには下記を満足させる必要があり、従来こ
れを満すものが得られなかった。The conventional blanket cylinder has a problem that the blanket shifts while the blanket is being used. In the case shown in FIG. 3A, since the blanket is loosened due to the displacement, it is necessary to appropriately retighten the bracket with the fitting 15 after mounting. 3B, since the cylindrical blanket 18 rotates on the blanket cylinder 19, as shown in FIG. 4, the alignment marks attached to the blanket 18 and the blanket cylinder 19 are shifted during use so that the blanket is not used. There is a problem that the surface of the body 19 is worn. At this time, it is not possible to retighten as shown in FIG. Providing the rotation stopper 23 as shown in FIG. 5 between the blanket 18 and the blanket cylinder 19 cannot be practically used since the thickness of the blanket 18 causes uneven printing. For this reason, it is necessary to hold by the friction between the blanket 18 and the blanket cylinder 19, but as described above, it is necessary to satisfy the following in order to apply to a printing press, and a product satisfying the following has not been obtained conventionally. .
【０００６】１．胴としての精度：５／１００ｍｍで真
円、寸法が管理可能なこと→大きな凹凸は不可 ２．摩擦係数 ：ベース材〜ブランケット胴の摩擦係数
は最低でも０．５は必要→クロムメッキでは低くて不可 ３．耐摩耗性 ：万一ベース材が摺動しても、ブランケ
ット胴表面が摩耗しないこと→クロムメッキでは、摩耗
が多くて不可 ４．耐蝕性：ＰＨ３の酸、濃度５％程度の塩水にも腐蝕
しないこと→空孔の多いメッキ、溶射では腐蝕して不可 本発明はかかる問題点に対処するため開発されたもので
あってブランケット胴の摩耗を防止することを目的とす
る。[0006] 1. Accuracy as a torso: 5 / 100mm, true circle and dimensions can be controlled → large irregularities are not possible 2. 2. Coefficient of friction: The coefficient of friction between the base material and the blanket cylinder must be at least 0.5. 3. Abrasion resistance: Should the surface of the blanket body not wear even if the base material slides → Chrome plating does not allow much wear. Corrosion resistance: Does not corrode even with PH3 acid, salt water with a concentration of about 5% → Corrosion is impossible with plating and thermal spraying with many holes The present invention has been developed to address such problems and has a blanket cylinder. The purpose of the present invention is to prevent abrasion.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めの本発明の構成はブランケット胴の表面に、直接溶射
される複数の耐食性皮膜と、該耐食性皮膜の表面に溶射
される耐摩耗性皮膜と、該耐摩耗性皮膜の表面に溶射さ
れる樹脂シーリング層とからなる被膜層を形成したこと
を特徴とする。In order to achieve the above object, the present invention comprises a plurality of corrosion-resistant coatings directly sprayed on the surface of a blanket cylinder, and a wear-resistant coating sprayed on the surface of the corrosion-resistant coating. A coating layer comprising a coating and a resin sealing layer sprayed on the surface of the wear-resistant coating is formed.
【０００８】又前記耐食性皮膜が、ハステロイＣの粗粒
溶射層と細粒溶射層との交互で形成されていることを特
徴とする。更に前記耐摩耗性皮膜がタングステンカーバ
イドの溶射層であることを特徴とする。更に前記耐摩耗
性皮膜の表面粗さが１０〜３５μｍ（Ｒｔ）であること
を特徴とする。[0008] Further, the invention is characterized in that the corrosion-resistant coating is formed alternately of a coarse sprayed layer and a fine sprayed layer of Hastelloy C. Further, the wear-resistant coating is a sprayed layer of tungsten carbide. Further, the wear-resistant coating has a surface roughness of 10 to 35 μm (Rt).
【０００９】更に前記耐摩耗性皮膜の表面凹部が樹脂シ
ーリング層を形成していることを特徴とする。[0009] Further, the present invention is characterized in that the concave portions on the surface of the wear-resistant coating form a resin sealing layer.
【００１０】[0010]
【作用】そして本発明は上記の手段により下層を形成す
る耐食性のハステロイＣ溶射皮膜は、各層が溶融粒子の
積層した凹凸の表面層を形成するが、粉末粒子径が大小
２種のものを交互に積層することによって、全体厚膜１
００μｍ程度の皮膜であってもピンホールがないため、
上層から侵入する腐蝕性の液体によるブランケット胴表
面の腐蝕を防止する。According to the present invention, the corrosion-resistant Hastelloy C sprayed coating forming the lower layer by the above means forms an uneven surface layer in which each layer is formed by laminating molten particles. By stacking on the whole thick film 1
Since there is no pinhole even with a film of about 00 μm,
Prevents corrosion of the blanket cylinder surface due to corrosive liquid entering from the upper layer.
【００１１】又上層を形成する耐摩耗性のタングステン
カーバイドは、微粉末を溶射することによって表面粗さ
１２〜４５μｍの耐摩耗性皮膜を形成する。さらにこの
皮膜の凹部のみに樹脂層を形成することによって摩擦係
数を０．５〜０．７に制御するため、筒状ブランケット
のズレを防止することができる。The wear-resistant tungsten carbide forming the upper layer forms a wear-resistant film having a surface roughness of 12 to 45 μm by spraying fine powder. Further, since the friction coefficient is controlled to 0.5 to 0.7 by forming the resin layer only in the concave portion of the film, the displacement of the cylindrical blanket can be prevented.
【００１２】[0012]
【実施例】次に本発明の実施例により更に説明する。表
面処理法として表１に示す。Next, the present invention will be further described with reference to examples. Table 1 shows the surface treatment method.
【００１３】[0013]
【表１】 [Table 1]
【００１４】表１は実施例として第１〜第８実施例を、
比較例として第１〜第２比較例を示した。方法でφ１７
０×６０W のテストロールを製作し、印圧０．１５ｍｍ
で１２ｍ／ｓの高速回転で２５時間を実施し性能を評価
した。また、耐食性は２００時間の塩水噴霧試験で評価
した。第１実施例〜第３実施例は本発明によるもので、
具体的には図１に示す通りである。下層の耐食性皮膜１
はピンホールをなくすため、溶射層特有の気孔部を封じ
る手段として、ハステロＣ粉末の粒子径を大小２種を選
択し、これらを交互に積層３，４して耐食性皮膜１の全
膜厚を１００μｍとすることで、２００時間の塩水噴霧
でも発錆しない耐食性皮膜を得ることができた。Table 1 shows the first to eighth embodiments as examples.
First and second comparative examples are shown as comparative examples. Φ17 by the method
A test roll of 0 × 60 W was manufactured and the printing pressure was 0.15 mm
Was performed at a high speed of 12 m / s for 25 hours to evaluate the performance. The corrosion resistance was evaluated by a salt spray test for 200 hours. The first to third embodiments are according to the present invention,
Specifically, it is as shown in FIG. Lower layer corrosion resistant film 1
In order to eliminate pinholes, as a means for sealing the pores peculiar to the sprayed layer, two types of large and small particles of the Hastello C powder were selected, and these were alternately laminated 3 and 4 to reduce the total thickness of the corrosion-resistant coating 1. By setting the thickness to 100 μm, a corrosion-resistant film that does not rust even when sprayed with salt water for 200 hours could be obtained.
【００１５】上層の耐摩耗性皮膜２は、筒状ブランケッ
トを長時間の回転中においてもズレを起こさず取付積層
を良くするため、第１実施例〜第３実施例及び図１〜２
に示す通り耐摩耗性のタングステンカーバイド溶射層
５、４０μｍを施工した後溶射層表面へ凹凸部をフェノ
ール樹脂でシール６し、さらに溶剤による溶解処理によ
って表面を調整した。The upper abrasion-resistant film 2 is provided with a first embodiment to a third embodiment and FIGS. 1 to 2 in order to improve the mounting and lamination without causing displacement even when the cylindrical blanket is rotated for a long time.
As shown in FIG. 5, a wear-resistant tungsten carbide sprayed layer 5 of 40 μm was applied, and then the irregularities were sealed 6 with a phenol resin on the surface of the sprayed layer, and the surface was adjusted by dissolution treatment with a solvent.
【００１６】この様な処理を施すことによって、表面粗
さ１０〜３５μｍ、摩擦係数０．５〜０．７が得られ、
これら高速回転下でも筒状ブラケットのズレはほとんど
認められない。また、タングステンカーバイド５の粒子
径を１０〜５０μｍに変えることによって、表面粗さ及
び摩擦係数を調整することができる。By performing such treatment, a surface roughness of 10 to 35 μm and a friction coefficient of 0.5 to 0.7 are obtained.
Even under these high-speed rotations, displacement of the cylindrical bracket is hardly recognized. Further, by changing the particle diameter of the tungsten carbide 5 to 10 to 50 μm, the surface roughness and the coefficient of friction can be adjusted.
【００１７】第４実施例は、第１実施例のシーリングを
省いたもので、摩擦係数が高くなり、ブランケットの取
付に支障が認められる。第５実施例は、第１実施例の下
層の耐食性皮膜１のみの特性を評価したもので耐食性は
問題ないが、回転中に摩耗が起りブランケットにズレが
発生した。第６実施例は第１実施例１の下層の耐食性皮
膜１のハステロイＣの粒子径を２０μｍのみに変更した
場合で、耐食性が不十分であった。In the fourth embodiment, the sealing of the first embodiment is omitted, and the coefficient of friction is increased, so that the installation of the blanket is obstructed. In the fifth embodiment, the characteristics of only the lower corrosion-resistant film 1 of the first embodiment were evaluated, and there was no problem with the corrosion resistance. However, abrasion occurred during rotation and the blanket was displaced. In the sixth example, the particle size of Hastelloy C of the lower corrosion-resistant film 1 of the first example was changed to only 20 μm, and the corrosion resistance was insufficient.
【００１８】第７及び第８実施例は、上層の耐摩耗性皮
膜２を省いた場合で、すべての性能が不十分であった。
特にハステロイＣの粒子径が大きくなると、全膜厚を２
００μｍに厚膜施工しても耐食性は低下した。第１比較
例は、ハステロイＣとダングステンカーバイドを組合す
場合の一般的な仕様によるもので、耐食性、摩擦係数及
びブランケットの保持力に問題があり適用できなかっ
た。In the seventh and eighth embodiments, the upper wear-resistant film 2 was omitted, and all the performances were insufficient.
In particular, when the particle size of Hastelloy C increases, the total film thickness becomes 2
Even when a thick film was applied to a thickness of 00 μm, the corrosion resistance was reduced. The first comparative example was based on general specifications when Hastelloy C and dangsten carbide were combined, and could not be applied due to problems in corrosion resistance, friction coefficient, and blanket holding force.
【００１９】第２比較例は、従来のブランケット胴に採
用している表面処理法で、筒状ブランケットに使用した
場合、表面が摩耗してブランケットのズレが発生した。
以上の結果から、筒状ブランケット用のブランケット胴
の表面処理としては、第１〜第３実施例が最も優れてい
ることを見出した。表面状態としては、表面粗さ１０〜
３５μｍ（Ｒｔ）が良く、また摩擦係数は０．５〜０．
７がブランケット取付時及び運転中の特性として好まし
い。なお各溶射層の膜厚及び樹脂の種類は機能を満すも
のであれば特に規制するものではない。The second comparative example is a surface treatment method used for a conventional blanket cylinder. When used for a cylindrical blanket, the surface was worn and the blanket was displaced.
From the above results, it was found that the first to third examples were the most excellent as the surface treatment of the blanket cylinder for the tubular blanket. As the surface condition, the surface roughness is 10
35 μm (Rt) is good, and the coefficient of friction is 0.5-0.
7 is preferable as a characteristic when the blanket is attached and during operation. The thickness of each sprayed layer and the type of resin are not particularly limited as long as they satisfy the function.
【００２０】以上のモデルテストの性能を大型ロールで
検証するため、オフセット輪転機（三菱重工ＧＰＸ）の
ブランケット胴（φ１７０×１０００ｌ）の表面を第１
実施例で処理し、１４００ｒｐｍで１００時間の運転を
行い、筒状ブランケットのズレ及び印刷品質を評価した
結果、実用上問題のない性能が得られた。In order to verify the performance of the above model test with a large roll, the surface of a blanket cylinder (φ170 × 1000 l) of an offset rotary press (Mitsubishi Heavy Industries GPX) was first tested.
The treatment was performed in the example, and the operation was performed at 1400 rpm for 100 hours. The displacement of the cylindrical blanket and the print quality were evaluated. As a result, performance having no practical problem was obtained.
【００２１】[0021]
【発明の効果】本発明によるブランケット胴を用いるこ
とで下記効果が得られ、ブランケット胴を印刷機の使用
条件に適用させ、かつブランケットがずれることがなく
なるため図３（ａ）のものでは増し締めが不用になり図
３（ｄ）のものではずれまわりによる摩耗が防止でき
る。The following effects are obtained by using the blanket cylinder according to the present invention. The blanket cylinder is adapted to the use conditions of the printing press, and the blanket does not shift, so that the blanket cylinder shown in FIG. 3D is unnecessary, and in the case of FIG.
【００２２】１．胴としての精度：溶射と研摩による処
理のため、安価に必要精度を確保可能である。 ２．摩 擦 係 数：摩擦係数は０．６程度であり、高
い値を示す。 ３．耐 摩 耗 性：セラミック溶射層はベース材金属
より硬く万一ブランケットがずれてもベース材の方が摩
耗してブランケット胴を保護しうる。1. Accuracy as a barrel: The required precision can be secured at low cost because of treatment by thermal spraying and polishing. 2. Friction coefficient: The coefficient of friction is about 0.6, indicating a high value. 3. Abrasion resistance: The ceramic sprayed layer is harder than the base metal, and even if the blanket shifts, the base material can be worn and protect the blanket cylinder.
【００２３】４．耐 蝕 性 ：下地処理によって酸
か水が母材に接しないため腐蝕を防止可能である。4. Corrosion resistance: Corrosion can be prevented because acid or water does not come into contact with the base material by the base treatment.
【図１】本発明の第１実施例を示す断面図である。FIG. 1 is a sectional view showing a first embodiment of the present invention.
【図２】図１における上層皮膜の拡大図である。FIG. 2 is an enlarged view of an upper film in FIG.
【図３】本発明の適用される印刷機の概要説明図であ
る。FIG. 3 is a schematic explanatory view of a printing machine to which the present invention is applied.
【図４】本発明で解消する課題の説明図である。FIG. 4 is an explanatory diagram of a problem to be solved by the present invention.
【図５】本発明で解消する課題の説明図である。FIG. 5 is an explanatory diagram of a problem to be solved by the present invention.
１ 耐食性皮膜 ２ 耐摩耗性皮膜 ３ ハステロイＣ粗目粉末溶射層 ４ ハステロイＣ細目粉末溶射層 ５ タングステンカーバイド溶射層 ６ 樹脂シーリング層 １２ ブランケット胴 DESCRIPTION OF SYMBOLS 1 Corrosion-resistant coating 2 Wear-resistant coating 3 Hastelloy C coarse powder sprayed layer 4 Hastelloy C fine powder sprayed layer 5 Tungsten carbide sprayed layer 6 Resin sealing layer 12 Blanket cylinder
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平６−24172（ＪＰ，Ａ) 特開 平５−138865（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B41F 13/08 B41N 10/00 - 10/04 ────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-6-24172 (JP, A) JP-A-5-138865 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B41F 13/08 B41N 10/00-10/04
Claims (5)
る複数の耐食性皮膜と、該耐食性皮膜の表面に溶射され
る耐摩耗性皮膜と、該耐摩耗性皮膜の表面に溶射される
樹脂シーリング層とからなる被膜層を形成したことを特
徴とするブランケット胴。1. A plurality of corrosion-resistant coatings directly sprayed on the surface of a blanket cylinder, a wear-resistant coating sprayed on the surface of the corrosion-resistant coating, and a resin sealing layer sprayed on the surface of the wear-resistant coating A blanket cylinder characterized by forming a coating layer consisting of:
溶射層と細粒溶射層との交互で形成されていることを特
徴とする請求項１記載のブランケット胴。2. The blanket cylinder according to claim 1, wherein the corrosion-resistant coating is formed alternately of a coarse sprayed layer and a fine sprayed layer of Hastelloy C.
イドの溶射層であることを特徴とする請求項１記載のブ
ランケット胴。3. The blanket cylinder according to claim 1, wherein said wear-resistant coating is a sprayed layer of tungsten carbide.
５μｍ（Ｒｔ）であることを特徴とする請求項３記載の
ブランケット胴。4. The wear-resistant coating has a surface roughness of 10 to 3
The blanket cylinder according to claim 3, wherein the thickness is 5 m (Rt).
リング層を形成していることを特徴とする請求項３記載
のブランケット胴。5. The blanket cylinder according to claim 3, wherein the concave portions on the surface of the wear-resistant coating form a resin sealing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07095350A JP3122330B2 (en) | 1995-04-20 | 1995-04-20 | Blanket torso |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07095350A JP3122330B2 (en) | 1995-04-20 | 1995-04-20 | Blanket torso |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08290690A JPH08290690A (en) | 1996-11-05 |
| JP3122330B2 true JP3122330B2 (en) | 2001-01-09 |
Family
ID=14135228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07095350A Expired - Fee Related JP3122330B2 (en) | 1995-04-20 | 1995-04-20 | Blanket torso |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3122330B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10250684B3 (en) | 2002-10-31 | 2004-04-01 | Koenig & Bauer Ag | Production of a rotational body of a printing machine comprises forming profiled bodies by welding material to opposite-lying walls of a groove in the peripheral direction of the balls in the machine |
| JP3732479B2 (en) * | 2002-11-20 | 2006-01-05 | 大日本印刷株式会社 | PRINTING DEVICE MEMBER AND PRINTING DEVICE USING THE MEMBER |
| US20120060999A1 (en) * | 2010-02-23 | 2012-03-15 | Yael Kowal-Blau | Removable top blanket |
-
1995
- 1995-04-20 JP JP07095350A patent/JP3122330B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08290690A (en) | 1996-11-05 |
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