ITBZ970014A1 - SOUL FOR PRESS CYLINDERS. - Google Patents
SOUL FOR PRESS CYLINDERS. Download PDFInfo
- Publication number
- ITBZ970014A1 ITBZ970014A1 IT97BZ000014A ITBZ970014A ITBZ970014A1 IT BZ970014 A1 ITBZ970014 A1 IT BZ970014A1 IT 97BZ000014 A IT97BZ000014 A IT 97BZ000014A IT BZ970014 A ITBZ970014 A IT BZ970014A IT BZ970014 A1 ITBZ970014 A1 IT BZ970014A1
- Authority
- IT
- Italy
- Prior art keywords
- core
- support material
- core according
- tube
- peripheral tube
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 238000007774 anilox coating Methods 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000009750 centrifugal casting Methods 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/16—Curved printing plates, especially cylinders
- B41N1/20—Curved printing plates, especially cylinders made of metal or similar inorganic compounds, e.g. plasma coated ceramics, carbides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Printing Plates And Materials Therefor (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Medicinal Preparation (AREA)
Description
DESCRIZIONE DESCRIPTION
DESCRIZIONE DESCRIPTION
L'invenzione si riferisce a un'anima per cilindri di stampa, in particolare per cilindri retinati di macchine da stampa rotative, composta da un tubo interno in materiale sintetico estensibile, p.es. un termoindurente, sul quale è applicato uno strato esterno di elastomero, p.es. poliuretano, con il quale viene fissato saldamente un tubo periferico di forma stabile di materiale di riporto. The invention relates to a core for printing cylinders, in particular for anilox cylinders of rotary printing machines, consisting of an internal tube made of extensible synthetic material, e.g. a thermosetting material, on which an external layer of elastomer, e.g. polyurethane, with which a stable peripheral tube of filler material is firmly fixed.
Nelle anime note il materiale di supporto è composto da un materiale espanso rigido con il quale viene formato un collegamento intimo tra il tubo periferico esterno e il tubo interno a due strati. Nella pratica si è dimostrato sfavorevole il fatto che l’espanso rigido usato come materiale di supporto risulta sensibile nei confronti di sollecitazioni termiche, chimiche e meccaniche. L'uso di un espanso rigido permette d’altra parte la realizzazione di anime leggere. Lo scopo della presente invenzione consiste quindi nello sviluppare un'anima del suddetto tipo in modo da risultare da un lato leggera e dall'altro da formare un collegamento duraturo e resistente tra il tubo periferico e il tubo interno a due strati. Ciò è ottenuto secondo l'invenzione per il fatto che il materiale di supporto è composto per lo meno da una nervatura avvolgente. Questa nervatura può essere disposta a spirale intorno all'intera estensione assiale dell'anima, ma si possono anche prevedere una pluralità di nervature anulari disposte a una certa distanza tra loro. In modo semplice il tubo periferico e le nervature sono realizzate di pezzo in alluminio mediante un procedimento di colata centrifuga. Il procedimento di colata centrifuga ha il vantaggio che il tubo periferico viene realizzato con le nervature essendo completamente privo di tensioni. Secondo una elaborazione vantaggiosa ciascuna nervatura presenta in questo caso per lo meno una apertura estendentesi nella direzione assiale dell'anima. In questo modo si assicura che il calore che si forma nel successivo rivestimento dell'anima con un materiale reticolabile possa venire smaltito in modo efficace. Una ulteriore notevole caratteristica per la realizzazione di un'anima consiste nel fatto che sul tubo estensibile interno provvisto dello strato elastomerico viene calettato a caldo un tubo metallico provvisto di nervature interne. Grazie al procedimento di calettamento a caldo si assicura un collegamento sicuro tra il tubo periferico e il tubo interno a due strati. In known cores, the support material is composed of a rigid foam material with which an intimate connection is formed between the outer peripheral tube and the two-layer inner tube. In practice, the fact that the rigid foam used as a support material is sensitive to thermal, chemical and mechanical stresses has proved unfavorable. On the other hand, the use of a rigid foam allows the creation of light cores. The object of the present invention therefore consists in developing a core of the aforesaid type so as to be light on the one hand and to form a durable and resistant connection between the peripheral tube and the two-layer inner tube on the other. This is achieved according to the invention due to the fact that the support material is composed at least of an enveloping rib. This rib can be arranged in a spiral around the entire axial extension of the core, but a plurality of annular ribs can also be provided, arranged at a certain distance from each other. In a simple way, the peripheral tube and the ribs are made of one piece of aluminum by means of a centrifugal casting process. The centrifugal casting process has the advantage that the peripheral tube is made with the ribs being completely tension-free. According to an advantageous embodiment, each rib has in this case at least one opening extending in the axial direction of the core. This ensures that the heat that forms in the subsequent coating of the core with a crosslinkable material can be effectively dissipated. A further notable feature for making a core consists in the fact that a metal tube provided with internal ribs is hot keyed onto the internal extensible tube provided with the elastomeric layer. Thanks to the shrink fit process, a secure connection between the peripheral tube and the two-layer inner tube is ensured.
L'invenzione viene qui di seguito descritta in dettaglio sulla base di un esempio di realizzazione e di una unica figura che lo rappresenta. In essa con 1 viene complessivamente indicata un'anima per cilindri di stampa, la quale è composta da un tubo interno dilatabile 2 in vetroresina. Su questo tubo in vetroresina viene applicato uno strato 3 estremamente compressibile, il quale è composto da un elastomero, p.es. poliuretano. Il tubo interno a due strati è circondato a una certa distanza da un tubo periferico 4 di forma stabile, il quale è collegato saldamente tramite nervature 5 al tubo interno a due strati. Come visibile in figura, il tubo periferico 4 di forma stabile e le nervature 5 sono ricavate di pezzo. Ciò avviene preferibilmente mediante colata centrifuga. Come noto in generale, nel caso di utilizzo di un'anima come cilindro retinato il tubo periferico esterno viene rivestito con uno strato di incisione, p.es. in ceramica. Durante questo procedimento si forma molto calore. Per potere smaltire in modo efficace questo calore, le nervature 5 sono provviste di fori passanti 6 estendentesi nella direzione assiale dell'anima 1. L'applicazione del tubo periferico 4 con le nervature 5 sul tubo interno a due strati (2, 3) avviene con un procedimento di calettamento a caldo, cosi da assicurare un sicuro fissaggio. Il vantaggio di un'anima cosi realizzata consiste sostanzialmente nel fatto che essa risulta da un lato leggera e dall'altro resistente nei confronti di sollecitazioni termiche, chimiche e meccaniche. The invention is described in detail below on the basis of an embodiment and a single figure representing it. In it, 1 generally indicates a core for printing cylinders, which is composed of an internal expandable tube 2 in fiberglass. An extremely compressible layer 3 is applied to this fiberglass tube, which is composed of an elastomer, eg polyurethane. The two-layer inner tube is surrounded at a certain distance by a peripheral tube 4 of stable shape, which is firmly connected by ribs 5 to the two-layer inner tube. As can be seen in the figure, the peripheral tube 4 of stable shape and the ribs 5 are obtained as one piece. This is preferably done by centrifugal casting. As is generally known, when a core is used as an anilox roll, the outer peripheral tube is coated with an etching layer, for example in ceramic. A lot of heat is generated during this process. In order to be able to efficiently dissipate this heat, the ribs 5 are provided with through holes 6 extending in the axial direction of the core 1. The application of the peripheral tube 4 with the ribs 5 on the two-layer inner tube (2, 3) takes place with a shrink fit procedure, so as to ensure a secure fixing. The advantage of a core made in this way substantially consists in the fact that it is light on the one hand and resistant to thermal, chemical and mechanical stresses on the other.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19613145A DE19613145C2 (en) | 1996-04-02 | 1996-04-02 | Sleeve for rollers of printing machines |
| PCT/EP1997/005416 WO1999017935A1 (en) | 1996-04-02 | 1997-10-01 | Sleeve for printing machine rollers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ITBZ970014A1 true ITBZ970014A1 (en) | 1998-09-24 |
| IT1292538B1 IT1292538B1 (en) | 1999-02-08 |
Family
ID=26024412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT97BZ000014A IT1292538B1 (en) | 1996-04-02 | 1997-03-24 | SOUL FOR PRESS CYLINDERS. |
Country Status (4)
| Country | Link |
|---|---|
| DE (2) | DE19613145C2 (en) |
| GB (1) | GB2311755B (en) |
| IT (1) | IT1292538B1 (en) |
| WO (1) | WO1999017935A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19613145C2 (en) * | 1996-04-02 | 2001-04-19 | Windmoeller & Hoelscher | Sleeve for rollers of printing machines |
| DE10016063C2 (en) | 2000-03-31 | 2003-08-14 | Windmoeller & Hoelscher | Sleeve for printing rollers |
| EP1456032B1 (en) | 2001-12-19 | 2008-04-30 | Gallus Ferd. Rüesch Ag | Pressure cylinder in the form of a hollow cylinder made of metal |
| FR2847847B1 (en) * | 2002-11-29 | 2005-01-28 | Epsilon Composite Sarl | PROCESS FOR MANUFACTURING A TUBE OF COMPOSITE MATERIAL OF HIGH STIFFNESS, AND TUBE OBTAINED |
| DE202004004375U1 (en) * | 2004-03-18 | 2004-10-28 | Polywest Kunststofftechnik Saueressig & Partner Gmbh & Co. Kg | Sleeve for printing machines |
| DE202014102152U1 (en) | 2014-05-08 | 2015-08-11 | Polywest Kunststofftechnik Saueressig & Partner Gmbh & Co. Kg | Anilox roller for inkjet printing units of printing machines |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE502022C (en) * | 1930-07-26 | Fallert & Co Akt Ges | Form cylinder for rotogravure printing machines | |
| GB122985A (en) * | 1918-06-03 | 1919-02-13 | Carl Winkler | Improvements in and relating to the Impression Cylinders of Printing Machines. |
| US1984115A (en) * | 1933-03-24 | 1934-12-11 | American Brass Co | Built-up print roll and method of making |
| DE1097452B (en) * | 1955-03-30 | 1961-01-19 | George Edmond Brackenbury Abel | Printing cylinder for rotary printing machines |
| DE1292958B (en) * | 1962-12-01 | 1969-04-17 | Saueressig Kg Geb | Roller, especially printing roller for textile and paper printing |
| CH422831A (en) * | 1963-09-06 | 1966-10-31 | Maschf Augsburg Nuernberg Ag | Inking roller for printing machines |
| GB1108479A (en) * | 1964-12-16 | 1968-04-03 | Hall Harding Ltd | A coaxial assembly of a tube, a shaft and a plug |
| US3640218A (en) * | 1970-06-25 | 1972-02-08 | Thomas K Allison | Seal assembly for sleeve-type gravure rolls |
| US4303721A (en) * | 1979-07-20 | 1981-12-01 | W. R. Grace & Co. | Closed cell foam printing blanket |
| NL8003073A (en) * | 1980-05-28 | 1982-01-04 | Stork Screens Bv | PRESSURE CYLINDER PROVIDED WITH AN EXTERNAL COATING, METHOD AND APPARATUS FOR COATING A CYLINDER SURFACE. |
| DE3525950A1 (en) * | 1985-06-18 | 1986-12-18 | Sulzer-Escher Wyss AG, Zürich | Roller for the thermal treatment of a web of material, and the use thereof |
| DE3543704A1 (en) * | 1985-12-11 | 1987-06-19 | Md Papierfabrik Pasing Nicolau | DEVICE AND METHOD FOR PRINTING A TRAIN |
| JP2686275B2 (en) * | 1988-03-31 | 1997-12-08 | 大日本印刷株式会社 | Printing cylinder heating device |
| DE3943746C2 (en) * | 1989-03-18 | 1998-04-02 | Roland Man Druckmasch | Carrier sheath, esp. for offset cylinders for rotary printing |
| DE4119824C1 (en) * | 1991-06-15 | 1992-12-03 | Koenig & Bauer Ag, 8700 Wuerzburg, De | |
| US5324248A (en) * | 1992-11-03 | 1994-06-28 | Composite Development Corporation | Composite machine roll and method of manufacture |
| DE19545597C2 (en) * | 1995-12-06 | 1999-01-07 | Polywest Kunststofftechnik | Process for producing a sleeve for printing or anilox rollers |
| DE19613145C2 (en) * | 1996-04-02 | 2001-04-19 | Windmoeller & Hoelscher | Sleeve for rollers of printing machines |
-
1996
- 1996-04-02 DE DE19613145A patent/DE19613145C2/en not_active Expired - Lifetime
- 1996-04-02 DE DE29623591U patent/DE29623591U1/en not_active Expired - Lifetime
-
1997
- 1997-03-24 IT IT97BZ000014A patent/IT1292538B1/en active IP Right Grant
- 1997-04-01 GB GB9706522A patent/GB2311755B/en not_active Expired - Fee Related
- 1997-10-01 WO PCT/EP1997/005416 patent/WO1999017935A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DE29623591U1 (en) | 1999-01-07 |
| IT1292538B1 (en) | 1999-02-08 |
| DE19613145C2 (en) | 2001-04-19 |
| WO1999017935A1 (en) | 1999-04-15 |
| GB2311755A (en) | 1997-10-08 |
| GB9706522D0 (en) | 1997-05-21 |
| GB2311755B (en) | 1999-09-22 |
| DE19613145A1 (en) | 1997-10-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted |