EP0114446A2 - Einrichtung zum Befestigen von biegsamen Folien auf einem Zylinder einer Rotationsdruckmaschine - Google Patents
Einrichtung zum Befestigen von biegsamen Folien auf einem Zylinder einer Rotationsdruckmaschine Download PDFInfo
- Publication number
- EP0114446A2 EP0114446A2 EP83201871A EP83201871A EP0114446A2 EP 0114446 A2 EP0114446 A2 EP 0114446A2 EP 83201871 A EP83201871 A EP 83201871A EP 83201871 A EP83201871 A EP 83201871A EP 0114446 A2 EP0114446 A2 EP 0114446A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- blanket
- slot
- sheet
- width
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F27/00—Devices for attaching printing elements or formes to supports
- B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
- B41F27/125—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end on a curvilinear path, e.g. by winding on a roll
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
- B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders
Definitions
- the present invention relates to a device for fixing one end of a sheet of flexible and folding-resistant material, such as a blanket, to a cylinder of a rotary printing machine, the cylinder being provided with a slot. radial insertion extending parallel to the axis of the cylinder, intended for fixing the folded end of the sheet.
- Such a device is described in DE-PS.22.52.949.
- the wall of the slot parallel to the axis is provided with a fixing device for one of the ends of the sheet.
- the fixing device has a chamfered edge inserted into the body of the cylinder.
- a border strip attached to the end of the sheet is slipped into this edge. To prevent it from falling outside, this strip must be protected by a safety device which complicates the fixing of the end of the sheet.
- the present invention overcomes these drawbacks by providing a device for fixing and securing directly to the cylinder body in a simple manner the end of a flexible sheet and resistant to folding.
- the fixing device is characterized in that the radial slot in its internal part forms a housing whose cross section widens towards the axis of the cylinder and whose internal bottom has, in the peripheral direction, a width greater than the width of the folded part of the end of the sheet, that one of the walls of the radial slot is provided with a receiving groove parallel to the axis of the cylinder forming an acute angle with the part of said wall extending outwards and that the maximum width of the external part of the radial slot extending beyond the receiving groove is less than the width of the folded part of the end of the sheet .
- the advantages of this device are above all linked to its simplicity which makes it possible to ensure the fixing of one end of a flexible sheet and resistant to folding, for example a blanket, on the body of a cylinder without it being necessary. to use an additional device to prevent the fixed end from coming off unintentionally, for example by gravity or under the action of centrifugal force.
- the end of the sheet to be fixed is folded and preferably reinforced by a steel blade so that it is rigid and it is pushed into the insertion slot, the fold edge first and the part folded against the wall provided with the receiving groove.
- the folded end behaves like a spring which expands as soon as its free end faces the receiving groove, from this moment the sheet is no longer pushed but slightly pulled outward from the slot so that the entire folded portion is engaged in the groove.
- the sheet is pushed as previously towards the inside of the slot until the folded part leaves the groove and is in the enlarged housing inside which the end unfolds. completely the part engaged in the slot can be removed.
- the walls of the slot may be parallel to the median plane of the slot which is simultaneously a radial plane of the cylinder.
- the cylinder can also be used in printing machines, for example rotary machines for intaglio printing, the cylinders of which have a linear load. particularly high.
- the blankets covering the printing cylinders of these machines consist of a canvas or linen fabric covered externally with a layer of rubber. Thickness total of such blanket is in the range of 0.4 to 0. 7 mm.
- the sheet 3 to be fixed on the mantle 1 of the cylinder 2 of a printing machine is a blanket with a thickness of approximately 0.5 mm.
- the cylinder 2 is provided with an insertion slot 6 open on the mantle 1 so as to be able to bring one or both ends 7,8 of the blanket 3 to a fixing device 9,11.
- the insertion slot 6 preferably has two walls 12, 13 parallel to each other and parallel to the median plane of the slot 6 represented by the line r which is simultaneously a radial plane of the cylinder.
- the width d of this slot 6 is approximately 4 mm.
- the insertion slot 6 is wide enough to allow it to slide and push towards the center of the cylinder the folded and reinforced end 7 of the blanket 3, reinforcement consisting of a steel strip with springs 14 with a thickness, for example 0.2 mm and a width of 5 mm, bonded to the folded end of the blanket 3.
- the opening angle y between the end 7 and the blanket 3 does not should show only a few degrees (5-15-) when inserting the folded end 7 into the insertion slot 6 (fig.3).
- the radial slot 6 forms at its inner part a housing 16 parallel to the axis of the cylinder 2, the cross section of which widens inwards.
- the housing 16 is limited by an inclined part 17 of the wall 12 and the second wall 13 of the slot 6.
- the acute angle a between the external part of the wall 12 and the inclined part is of the order of 20 °.
- the enlarged housing 16 opens for example on a cylindrical hole 18 for tension pivot, hole coaxial with the cylinder, and where the tension pivot 19 is housed.
- the tension pivot 19 has a groove 21 parallel to the axis of the cylinder 2 and used for fixing the second reinforced end 8 of the blanket 3.
- a groove 22 has been inserted parallel to the axis of the cylinder which extends over the entire length of the cylinder 2 and whose profile is rectangular.
- the median plane 23 of the groove shows, with respect to the wall 12, an opening angle P varying between 5 ° and 45 °, but preferably being 30 °.
- the width c of the groove 22 is chosen so that there is still just enough room for the reinforced end 7 of the blanket 3.
- the depth g of the receiving groove 22 is slightly greater than the width e of the first reinforced end 7 of the blanket 3.
- the blanket 3 can of course rest on a covering 4.
- the fixing device can also be used for other applications, for example for fixing the blankets to a blanket cylinder of an offset printing machine, provided that the thickness of the blanket is not too large to be foldable.
- a blanket having a thickness of 0.4 to 0.7 mm can in fact be fixed to the cylinder by means of the device described above.
Landscapes
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Printing Plates And Materials Therefor (AREA)
- Rotary Presses (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Labeling Devices (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83201871T ATE20326T1 (de) | 1983-01-18 | 1983-12-29 | Einrichtung zum befestigen von biegsamen folien auf einem zylinder einer rotationsdruckmaschine. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH258/83 | 1983-01-18 | ||
CH25883 | 1983-01-18 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0114446A2 true EP0114446A2 (de) | 1984-08-01 |
EP0114446A3 EP0114446A3 (en) | 1984-08-22 |
EP0114446B1 EP0114446B1 (de) | 1986-06-11 |
Family
ID=4182904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83201871A Expired EP0114446B1 (de) | 1983-01-18 | 1983-12-29 | Einrichtung zum Befestigen von biegsamen Folien auf einem Zylinder einer Rotationsdruckmaschine |
Country Status (9)
Country | Link |
---|---|
US (1) | US4584942A (de) |
EP (1) | EP0114446B1 (de) |
JP (1) | JPS59138455A (de) |
AT (1) | ATE20326T1 (de) |
AU (1) | AU562876B2 (de) |
CA (1) | CA1213466A (de) |
DD (1) | DD212006A1 (de) |
DE (1) | DE3364104D1 (de) |
SU (1) | SU1306470A3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU574948B2 (en) * | 1986-08-28 | 1988-07-14 | Rockwell International Corp. | Flexible plate lock up on printing press |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4738200A (en) * | 1985-03-14 | 1988-04-19 | M.A.N. Roland Druckmaschinen Aktiengesellschaft | Rubber blanket cylinder for a rotary offset printing machine |
JPH09300588A (ja) * | 1996-05-17 | 1997-11-25 | Mitsubishi Heavy Ind Ltd | 輪転機のブランケット装着方法および装着装置 |
US5979272A (en) * | 1997-02-10 | 1999-11-09 | Artos Engineering Company | Device for gathering, cutting and stripping insulated wire |
EP1602482A1 (de) | 2004-06-03 | 2005-12-07 | Kba-Giori S.A. | Intaglio Druckmaschine mit Phasenzylindervorrichtung |
TWI316466B (en) * | 2007-03-09 | 2009-11-01 | Ind Tech Res Inst | Mold structure and the manufacturing method thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2209127A (en) * | 1938-12-19 | 1940-07-23 | United Autographic Register Co | Apparatus for attaching printing plates to a cylinder |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2285116A (en) * | 1938-10-12 | 1942-06-02 | Interchem Corp | Printing plate |
US2850970A (en) * | 1955-04-22 | 1958-09-09 | Levey Fred K H Co Inc | Lock-up |
DE1213861B (de) * | 1956-02-24 | 1966-04-07 | Gerhard Ritzerfeld | Rotationsvervielfaeltiger mit einem Druckzylinder zum Aufspannen von duennen biegsamen Druckformfolien |
US2986085A (en) * | 1959-04-13 | 1961-05-30 | Cottrell Company | Printing cylinders for rotary web presses |
US3844214A (en) * | 1971-11-01 | 1974-10-29 | Dayco Corp | Printing blanket bar assembly with edging strip locking means |
-
1983
- 1983-12-29 EP EP83201871A patent/EP0114446B1/de not_active Expired
- 1983-12-29 DE DE8383201871T patent/DE3364104D1/de not_active Expired
- 1983-12-29 AT AT83201871T patent/ATE20326T1/de not_active IP Right Cessation
-
1984
- 1984-01-05 US US06/568,364 patent/US4584942A/en not_active Expired - Fee Related
- 1984-01-05 AU AU23103/84A patent/AU562876B2/en not_active Ceased
- 1984-01-06 DD DD259256A patent/DD212006A1/de not_active IP Right Cessation
- 1984-01-11 CA CA000445105A patent/CA1213466A/en not_active Expired
- 1984-01-13 SU SU843686782A patent/SU1306470A3/ru active
- 1984-01-17 JP JP59004918A patent/JPS59138455A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2209127A (en) * | 1938-12-19 | 1940-07-23 | United Autographic Register Co | Apparatus for attaching printing plates to a cylinder |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU574948B2 (en) * | 1986-08-28 | 1988-07-14 | Rockwell International Corp. | Flexible plate lock up on printing press |
Also Published As
Publication number | Publication date |
---|---|
JPS59138455A (ja) | 1984-08-08 |
DD212006A1 (de) | 1984-08-01 |
DE3364104D1 (en) | 1986-07-17 |
CA1213466A (en) | 1986-11-04 |
EP0114446A3 (en) | 1984-08-22 |
JPH0152186B2 (de) | 1989-11-08 |
ATE20326T1 (de) | 1986-06-15 |
SU1306470A3 (ru) | 1987-04-23 |
EP0114446B1 (de) | 1986-06-11 |
US4584942A (en) | 1986-04-29 |
AU2310384A (en) | 1984-07-19 |
AU562876B2 (en) | 1987-06-18 |
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