EP1574332B1 - Printing unit of a printing machine - Google Patents

Abstract

The cylinder (2,3) has at least two ducts (12,13,14) one behind each other in a peripheral direction and taking second casings (9,11) on the cylinder. At least one of the ducts is at least partly covered by a second casing. The cylinder is a form or transfer cylinder with the second casing in the form of a printing plate,.

Description

The invention relates to a printing unit of a rotary printing press according to the preamble of claim 1.

From the DE 44 29 210 A1 the arrangement of four in the direction of rotation of a forme cylinder successively arranged printing foils is known, which are held in four pits. The printing foils each span a circular arc section lying between two pits.

The DE 44 29 891 A1 shows a printing unit of a rotary printing machine with double-sized transfer cylinder (ie, two section lengths around the circumference), which cooperates with a simple large form cylinder.

Also is through the DE 198 03 809 A1 an arrangement of cylinders of an offset printing unit is known in which the circumference of the transfer cylinder to that of the forme cylinder is in a double ratio. The form cylinder is in the circumferential direction with a printing form and in its longitudinal direction with at least four standing printed pages in the broadsheet format, or equivalent number of standing or lying tabloid or book formats, assignable. In the circumferential direction of the transfer cylinder for receiving two in the longitudinal direction of the cylinder juxtaposed blankets a single, either longitudinally continuous or longitudinally divided and offset by 180 °, slot arranged. The blanket is, for example, two-ply designed as a fixed to a support plate rubber blanket.

In the DE 34 41 175 C2 be for the purpose of relaxing the blanket Recesses proposed in the cylinder surface of the transfer cylinder. Between cylinder and blanket can also be arranged for this purpose a pad that does not have the entire length of the blanket in the circumferential direction and has an interruption. To accommodate the interrupted pad a slot is provided on the circumference of the cylinder next to the clamping channel for the blanket. The arranged in the longitudinal direction of the transfer cylinder recesses and the rubber blanket receiving channel are arranged so that they act together in the contact region with the channel of the plate cylinder.

The DE 197 40 575 A1 shows cooperating forming and transfer cylinder, wherein in one embodiment, the transfer cylinder in the circumferential direction one behind the other two clamping channels and two held in the clamping channels rubber blankets. In another example, a double-sized transfer cylinder interacts with a double-sized forme cylinder, but both cylinders have only one chucking channel in the circumferential direction. In all examples, the channels do not roll off each other.

By the DE-OS 19 60 635 a single form cylinder is disclosed, which has on its circumference in the circumferential direction a plurality of channels for the attachment of printing plates. When occupying the forme cylinder with a printing forme in the circumferential direction, at least one of the channels can be covered.

The DE 25 28 008 A1 shows a printing machine for a direct printing method with form cylinders, which can be equipped in the axial direction with six and in the circumferential direction with two printing plates, and counterpressure cylinders, which are assignable in the axial direction three and in the circumferential direction with a pressure felt. Both the pressure plates arranged next to one another and the pressure felts arranged next to one another are offset relative to each other in the circumferential direction. Transfer to one Offset printing method, the angular arrangement of mounting gaps on the transfer cylinder is equally important in relief printing the arrangement on the forme cylinder.

In the article of Ifra newspaper technology from October 1991, pages 48 - 50, "The KBA journal - a small sister for the Commander and the express The printing cylinder has, in two channels offset by 180 ° and 18 mm wide, two blankets held with tensioning strips, the blanket cylinder having two continuous clamping slots and eight printing plates or four panorama printing plates Machine is designed as a low-cost and lighter-built machine for small and medium runs and is intended to expand the newspaper rotation program "down".

Ifra-Zeitungstechnik, 09/91, pages 150, 152, 154, 156, 158 "6-plate wide newspaper machine - History and Facts" discloses a six-page wide satellite printing unit, wherein the printing cylinder six printing plates in pairs circumferentially offset from each other are arranged.

The DE 195 41 249 A1 discloses blanket units wherein a blanket is mounted on a dimensionally stable backing plate. By using tight mounting slots, channel-induced vibrations are reduced.

The EP 0 849 080 A1 discloses a channel cover which can be used in both forming and transfer cylinders. In one example of a transfer cylinder has these bearer rings and two offset by 180 ° in the circumferential direction channel sections.

The invention has for its object to provide a printing unit of a rotary printing press.

The object is achieved by the features of claim 1.

The achievable with the present invention consist in particular that a flexible Use of different elevator formats is possible and at the same time with the use of elevators large run length pressure relief in the range of channels, especially in the area covered by elevators channels, and over the circumference as consistently high print quality is guaranteed in the development of the printed image.

The arrangement of a plurality of extending in the longitudinal direction of the forming and / or transfer cylinder channels will meet a variety of requirements as needed, without having to replace the cylinder with changing requirements of existing printing presses or to consider each production profile individually in the production.

It is particularly advantageous that both different formats of the lifts, in the circumferential and longitudinal direction of the cylinder, as well as different constellations and phase shifts of the mutually interacting cylinders considered, and thereby in terms of z.T. competing requirements for register retention, low vibration, arrangement of the rolling pressure areas and minimizing the non-printable paper can be optimized as needed.

An advantageous embodiment of a forme cylinder with double circumference, d. H. For example, two newspaper pages in the circumferential direction, allows either the assignment with circumferentially successively arranged printing forms or with reaching to the full extent printing forms, wherein a channel is covered. The arrangement of over the full extent reaching printing forms reduced z. B. significantly the changeover time. Also, in the case of transfer cylinders, an array of blanket-length blankets significantly reduces the changeover time.

The arrangement of at least two longitudinally approximately continuous channels on a transfer cylinder are a variety of ways to Arrangement of lifts, created for example blankets. Advantageous in terms of the quality of the processing of the printed image compared to double-sized cylinders with only one channel is in the arrangement of multiple channels also that in the case of blankets that extend around the full extent, a covered channel at the same time to relax the elevator can serve.

The arrangement of a single longitudinally and circumferentially extending elevator brings advantages in terms of variety in the printable formats (height and width of the print area such as Panorama).

When a channel is covered by a printing form, it is advantageous due to the risk of breakage to arrange the forme cylinder and the transfer cylinder so that the covered channel rolls on a channel of the transfer cylinder. The unwinding of a covered by a blanket channel of the transfer cylinder on a channel of the forme cylinder is in terms of a further improved relaxation of the blanket on passage of the channels to each other, and thus advantageous for the unrolled print image.

The arrangement of a plurality of juxtaposed in the longitudinal direction of the cylinder, in each case almost over the entire circumference extending elevators has z. B. advantages in terms of handling and individual interchangeability. This is particularly the case for long cylinders, as is the case for double-wide (eg four newspaper pages in the longitudinal direction of the cylinder) or even triple (for example six newspaper pages) wide cylinders.

The embodiment of the elevators for the transfer cylinder as a multilayer or multilayer printing blanket, which has a carrier plate and a support or layer connected thereto, is advantageous in terms of the quality of the development of the printed image. Especially for large dimensions, a print quality that is consistently good and register-accurate over the circumference of the cylinder is one possible Dimensionally stable training essential.

Also advantageous is the formation of the channels with a narrow opening to the outer surface of the cylinder, z. B. to reduce paper consumption. For channels of the forme cylinder, a narrow opening is particularly advantageous, in particular for channels which are covered at least in part. For example, this can further reduce the risk of breakage.

Furthermore, it is advantageous to perform the circumferential ratio of the transmission to the forme cylinder integral and to arrange the channels on the cylinder in the circumferential direction symmetrically.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Fig. 1

ein doppelt breites Zylinderpaar, wobei der Formzylinder mit zwei in Längsrichtung verlaufenden Kanälen ausgebildet ist und sich die Aufzüge auf dem Formzylinder nahezu über den vollen Umfang erstrecken;

Fig. 2

ein doppelt breites Zylinderpaar, wobei der Form- und Übertragungszylinder mit jeweils zwei in Längsrichtung verlaufenden Kanälen ausgebildet ist und sich die Aufzüge auf dem Form- und Übertragungszylinder nahezu über den vollen Umfang erstrecken;

Fig. 3

zwei doppelt breite Zylinderpaare, wobei der Übertragungszylinder mit zwei in Längsrichtung verlaufenden Kanälen ausgebildet und mit zwei sich nahezu über den vollen Umfang erstreckenden, in Längsrichtung nebeneinander liegenden Aufzügen belegt ist;

Fig. 4

zwei doppelt breite Zylinderpaare, wobei der Übertragungszylinder mit zwei in Längsrichtung verlaufenden Kanälen ausgebildet und mit zwei sich nahezu über den vollen Umfang erstreckenden, in Längsrichtung nebeneinander liegenden Aufzügen, jedoch in Umfangsrichtung um 180° versetzt belegt ist;

Fig. 5

zwei doppelt breite Zylinderpaare, wobei der Übertragungszylinder mit zwei in Längsrichtung verlaufenden Kanälen ausgebildet und mit zwei sich nahezu über die gesamte Länge des Ballens erstreckenden, in Umfangsrichtung hintereinander angeordneten Aufzügen belegt ist;

Fig. 6

zwei doppelt breite Zylinderpaare, wobei der Übertragungszylinder mit zwei in Längsrichtung verlaufenden Kanälen ausgebildet und mit vier Aufzügen, wobei jeweils zwei in Umfangsrichtung hintereinander angeordneten Aufzüge in Längsrichtung nebeneinander angeordnet sind;

Fig. 7

zwei doppelt breite Zylinderpaare, wobei der Übertragungszylinder mit jeweils vier in Längsrichtung verlaufenden Kanälen ausgebildet ist und mit zwei sich nahezu über die gesamte Länge des Ballens erstreckenden, in Umfangsrichtung hintereinander angeordneten Aufzügen belegt ist;

Fig. 8

ein mehrschichtiges Drucktuch mit Kanal und Halteeinrichtung.

Show it:

Fig. 1

a double-wide pair of cylinders, wherein the forme cylinder is formed with two longitudinally extending channels and the elevators extend on the forme cylinder almost over the full circumference;

Fig. 2

a double-wide pair of cylinders, wherein the forming and transfer cylinder is formed with two longitudinally extending channels and the elevators extend on the forming and transfer cylinder almost over the full circumference;

Fig. 3

two double-wide pairs of cylinders, wherein the transfer cylinder formed with two longitudinally extending channels and with two extending almost over the full circumference, lying side by side in the longitudinal direction Elevators is occupied;

Fig. 4

two double-width cylinder pairs, wherein the transfer cylinder is formed with two longitudinally extending channels and occupied by two, extending almost over the full circumference, longitudinally juxtaposed elevators, but offset in the circumferential direction by 180 °;

Fig. 5

two double-width cylinder pairs, wherein the transfer cylinder with two longitudinally extending channels and is occupied with two extending over almost the entire length of the bale, circumferentially arranged successively elevators;

Fig. 6

two double-width cylinder pairs, wherein the transfer cylinder formed with two longitudinal channels and four elevators, each arranged in the circumferential direction successively arranged elevators in the longitudinal direction next to each other;

Fig. 7

two double-wide pairs of cylinders, wherein the transfer cylinder is formed with four longitudinally extending channels and is occupied with two extending over almost the entire length of the bale, circumferentially arranged successively elevators;

Fig. 8

a multi-layered blanket with channel and holding device.

A printing unit of a rotary printing machine has at least one pair of cylinders 01 consisting of two cylinders 02; 03, for example, a transfer cylinder 02 and cooperating with this form cylinder 03. The transfer cylinder 02 can be printed on the substrate to be printed 04 with a counter-pressure cylinder, not shown, or with a transfer cylinder 07 of a second Cylinder pair 06 act together, which in turn is associated with a forme cylinder 08. The transfer cylinder 02; 07 are each with at least one elevator 09, for example a blanket 09, and the forme cylinder 03; 08 each with at least one elevator 11, for example, a printing plate 11, assignable.

Depending on the requirements of the print formats and the printing performance, as well as the possibilities in the paper guide, the cylinder pairs 01; 06 different widths executed. For example, the cylinder pairs 01; 06 for the newspaper printing single, double or triple wide, simply wide the width of the bale, for example, the forme cylinder 03, for two standing or lying newspaper pages referred. In commercial printing, double-width refers to the required width for four horizontal or six vertical A4 pages. The sizes of transmission 02; 07 and the forme cylinder 03; 08 are each made simple or double, based on a variety of standing or lying formats, such as a standing or lying newspaper format. Advantageous constellations in newspaper printing are for example a doubly large scale, d. H. two sides in the circumferential direction, the transfer cylinder 02; 07 acting together with a double or simple circumference of the forme cylinder 03; 08, each double width.

Fig. 1 shows a double-wide cylinder pair 01, wherein transfer cylinder 02 and forme cylinder 03 each have a double circumference. The forme cylinder 03 has two longitudinally extending and circumferentially spaced channels 12; 13 for receiving the ends of at least one printing plate 11, the transfer cylinder 02 a channel 14 for receiving the ends of at least one blanket 09 on. The channels 12; 13 of the forme cylinder 03, 08 are at least on a partial section in the longitudinal direction of the forme cylinder 03; 08, viewed in a direction perpendicular to the axis of rotation cross section, arranged in the circumferential direction one behind the other. The forme cylinder 03 is occupied in the example with four in the longitudinal direction of the cylinder juxtaposed printing plates 11, such as printing plates 11, the are each held with their two ends in the channel 12, each extending to the region of the channel 12 around the entire circumference and each cover the channel 13. In order to prevent a risk of breakage, forme cylinder 03 and transfer cylinder 02 are advantageously arranged relative to one another in such a way that the covered channel 13 cooperates with the channel 14 of the transfer cylinder 02 during the rolling of the cylinder. The latter is not required if z. B. the channel 13 is closed by means of a releasable lid or the channel width is so small that a break is avoided. The forme cylinder 03 can be simple, double and triple wide. He can be flexible in many ways, eg. B. with a continuous, or two or more longitudinally juxtaposed printing plates 11 different formats (eg., Simple, Panorama) be occupied. If necessary, the forme cylinder 03 may also have more than two longitudinally extending and circumferentially spaced channels 12; 13 have. The transfer cylinder 02 in Fig. 1 may have a continuous channel 14, in which two blankets 09 are held in the axial direction next to each other. However, it can also two in the axial direction next to each other, but staggered, z. B. by 180 °, channels 14; Be arranged 16, wherein the juxtaposed blankets are also arranged offset from each other (not explicitly shown, second channel 16 would be in Fig. 1 hidden and not visible).

Also, the transfer cylinder 02 can, as exemplified in Fig. 2 shown a second, z. B. diametrically opposite and extending in the longitudinal direction of the transfer cylinder 02 channel 16. The channels 14; 16 of the transfer cylinder 02, 07 are at least on a partial section in the longitudinal direction of the transfer cylinder 03; 08, viewed in a direction perpendicular to the axis of rotation cross section, arranged in the circumferential direction one behind the other. In the example covers a single, extending to the region of the channel 14 over the entire length of the bale and almost over the entire circumference blanket 09 the transfer cylinder 02. The forme cylinder is here by way of example with two in the longitudinal direction of the cylinder side by side lying, and each occupies almost the full circumference extending pressure plates 11. The covered channel 13 acts in the example when unrolling the cylinder pair 01 with the also covered channel 16 of the transfer cylinder 02 together. However, it can, as in the first embodiment, roll on the uncovered channel 14.

In addition to those in the Figures 1 and 2 with the forme cylinder 03; 08 acting together shown double-wide embodiment of the transfer cylinder 02, this can be performed, for example, single or three times wide. The with the two channels 12, 13 having the form of cylinders 03; 08 cooperating transfer cylinder 02; 07 from the first two embodiments ( Fig. 1, 2 ) can, as in the FIGS. 1 to 7 and whose description is shown by way of example, flexible with a continuous, with two or more in the longitudinal direction next to each other or circumferentially successively arranged blankets 09, or with several longitudinally adjacent to each other and simultaneously with a plurality of circumferentially successively arranged blankets 09 be occupied. In the FIGS. 3 to 7 can in this case z. As well as a forme cylinder 03 double circumference of the Figures 1 or 2 and their description in place of in the FIGS. 3 to 7 illustrated form cylinder 03; 08 kick. If necessary, the transfer cylinder 03 may also have more than two longitudinally extending and circumferentially spaced channels 12; 13 have. With the according to Fig. 1 and 2 1 and 2, a transfer cylinder of conventional design and occupancy (for example, double the size and only one channel, one or two blankets in the longitudinal direction next to each other) or a double-circumference transfer cylinder can act together, which two offset in the axial direction side by side and at the same time in the circumferential direction arranged one behind the other channels, and is assignable with, for example, two offset to each other in the circumferential and longitudinal directions blankets.

However, it is advantageous for all variants of the form cylinder 03; 08 cooperating transfer cylinder 02; 07, when the latter has at least one channel 14; 16 in the longitudinal direction, and the at least partially covered channel 12; 13 of the forme cylinder 03; 08 on this channel 14; 16 rolls off.

In the following embodiments, FIGS. 3 to 7 and related description, are some other advantageous embodiments for the arrangement of blankets 09 on a transfer cylinder 02; 07 set forth, wherein the transfer cylinder 02; 07 a plurality of longitudinally extending channels 14; 16 has. The examples each show two double-width cylinder pairs 01 forming a printing unit; 06, wherein the two transfer cylinders 02; 07 on the substrate 04 together. The cylinder pairs 01; However, if required, they can also be simple, triple or even fourfold wide. The teaching from the examples should then be applied accordingly. In the examples, the transfer cylinder 02; 07 twice as large extent as that of the forme cylinder 03; 08, which is here occupied with four longitudinally juxtaposed printing plates 11. Likewise, the forme cylinder 03; 08 but also with two juxtaposed panoramic printing plates, or a panorama printing form and two simple printing forms be occupied. For all subsequent embodiments, the cooperating form cylinder 03; 08 but also be made double in size, he can with one or two channels 12; 13, with two in the axial direction next to each other or in the circumferential direction successively arranged printing plates 11, or with a plurality of longitudinally adjacent to one another and at the same time with a plurality of circumferentially successively arranged printing forms be occupied. Also in the Figures 1 and 2 illustrated embodiments for the with the transfer cylinders 02; 07 of the FIGS. 3 to 7 co-operating form cylinder 03; 08 are to be applied.

However, it is advantageous for all variants of the with the transfer cylinder 02; 07 from the embodiments 2 to 4 and 7 cooperating form cylinder 03; 08, if this at least one channel 12; 13 in the longitudinal direction, and the at least partially covered channel 14; 16 of the transfer cylinder 02; 07 rolls on this.

Fig. 3 shows the arrangement of two blankets 09 on a transfer cylinder 02; 07, which are arranged side by side in the longitudinal direction and each extending approximately over the full circumference. Two channels 14; 16 extend in the longitudinal direction of the transfer cylinder 02; 07 and are arranged offset in the circumferential direction almost 180 °. The channel 16 is covered and, in particular in the case of non-dimensionally stable printing blankets 09, counteract the walking and relax the elevator as a relief unit. In an advantageous manner, the channel 14 or the covered channel 16 acts upon settlement of the cylinder against each other with the channel 12 of the forme cylinder 03; 08 together. According to Fig. 4 the two blankets 09 can also be arranged offset in the circumferential direction by 180 ° to each other, in which case each part of the channel 14 and a part of the channel 16 is covered. The arrangement of three or more printing blankets 09 arranged side by side, in particular in the case of very long cylinders, takes place in an analogous manner in an aligned or alternating manner.

In Fig. 5 is the arrangement of two blankets 09 on a respect to a newspaper page double wide transfer cylinder 02; 07 shown with double large handling, which are arranged in the circumferential direction one behind the other and each extending almost over the entire length of the bale. Each blanket 09 four in the longitudinal direction of the transfer cylinder 02; 07 juxtaposed newspaper pages transferred. Are more than two channels 14, 16 on the transfer cylinder 02; 07 arranged, so is the arrangement of a corresponding number of blankets 09, or a coverage of channels 14; 16 possible.

Fig. 6 shows the arrangement of four blankets 09 on a, z. B. double wide and double-sized, transfer cylinder 02; 07. In each case two circumferentially successively arranged printing blankets 09 are arranged side by side in the longitudinal direction. In an analogous manner, in particular for longer and stronger cylinders, more than two blankets in each case in the longitudinal or in the circumferential direction to be arranged. The latter, however, sets a corresponding number of channels 14; 16 ahead.

Fig. 7 shows an assignment of the transfer cylinder 02; 07, for example, for four channels 14; 16; 17; 18 with two circumferentially successively arranged elevators 09; 11, in which case each second channel 17; 18 is covered. The same applies to the arrangement of four channels on form cylinders 03; 08th

Both for the transfer cylinder 02; 07 as well as for the forme cylinder 03; 08 is in each case the circumferentially symmetrical arrangement of the channels 12; 13 and 14, respectively; 16 with almost identical intermediate angles advantageous, z. B. at two channels 12; 13 and 14, respectively; 16 offset by 180 °, with three by 120 ° or alternately by 180 °. With more than two channels 12 each; 13 and 14, respectively; 16, a plurality of longitudinally juxtaposed printing plates 11 or blankets 09 may be offset from each other in the circumferential direction.

The ratio of the circumference of the transfer cylinder 02; 07 to the forme cylinder 03; 08 is advantageous integer, in particular for the case of a forme cylinder 03; 08 with circumferentially arranged in succession channels 12; 13 at twice the size equals 1.

In the Fig. 3 to 7 shown two cylinder pairs 01 and 06 need not be equipped in the same way with the same channel number and geometry, or with the same pattern for the elevators 09; 11 be occupied. However, it is advantageous to tune the phases of non-printing areas of the co-operating transfer cylinder 02; 07 so that as possible non-printing areas, especially areas of the concealed or unobstructed channels interact.

Of course, the in Fig. 1 to 7 described form 03 and transfer cylinder 02 also in the "usual" way, ie with several, predetermined by the number of channels number of elevators 09; 11 be occupied in the circumferential direction one behind the other.

The in the FIGS. 1 to 7 and the descriptions associated with assignments of the transfer cylinders 02; 07 with blankets 09 are also applicable to the other embodiments accordingly. The same applies to the assignment of the forme cylinder 03; 08 and the transfer to the other embodiments in connection with different embodiments of the transfer cylinder 02; 07th

In the FIGS. 1 to 7 are the channels 12; 13, 14, 16; 17; 18 respectively to the front side of the cylinder 02; 04, 07; 08 shown running. However, for reasons of stability, for reasons of pollution or when using bearer rings, however, an edge without a channel 12 can be provided on the front side; 13; 14; 16; 17; 18 present. The channels 12; 13; 14; 16; 17; 18 extend in this case almost over the entire length of the cylinder 02; 03, 07; 08 or its bale.

The mentioned embodiments and examples for the arrangement of channels 12; 13; 14; 16; 17; 18 and elevators 09; 11 on transfer cylinders 02; 07 and forme cylinders 03; 08 as well as configurations of printing units with a pair of cylinders 01; 06 from a transfer cylinder 02; 07 and a co-operating form cylinder 03; 08 are of course also apply to the case when the cylinder pair 01; 06 does not cooperate with a second transfer cylinder 07, but with an example, designed as a steel cylinder impression cylinder together.

Under elevator 11 is here z. B. understood a one-piece pressure plate 11. The elevator 09 for the transfer cylinder 02; 07 represents a one-piece printing blanket 09. This one-piece printing blanket 09 can be single-layered or multi-layered, with the latter being applied to a carrier plate 21, for example at least one layer 22 and fixedly connected thereto. The ends 23; 24 of the single or multi-layer blanket 09 act with a channel 14; 16; 17; 18 arranged holding device 26 together.

In particular in connection with narrow openings of the channels 14; 16; 17; 18 to the lateral surface of the transfer cylinder 02; 07 toward the formation of the blanket 09 is advantageous as a multi-layer blanket 09, which does not or only insignificantly changes when rolling example, the forme cylinder 03 on the transfer cylinder 02 by walking its length or width, that is almost dimensionally stable. For this purpose, the blanket unit 09, as in Fig. 8 shown, the almost dimensionally stable support plate 21, for example of metal or plastic, on which the elastic or soft layer 22 is applied (indicated in FIG Fig. 1 and 2 ). In the present example of the multi-layer printing blanket 09, the ends 23 and 24 of the blanket 09 are identical to the ends of the support plate 21, since the support plate 21 in with the channel 14; 16; 17; 18 cooperating area is bent and uncoated.

The support plate 21 of the multi-layer printing blanket 09 may be coated in another embodiment also up to the ends of the support plate 21, in which case the ends 23 and 24 of the multilayer blanket 09 next to the support plate 21 and the layer 21 have. If the blanket is designed as a simple rubber blanket 09, the ends 23 act; 24 of the blanket 09 with the channels 14; 16; 17; 18 together.

Also the channels 12; 13 may have holding devices 33 for the printing plates 11 in an advantageous embodiment.

The holding device 26; 33 may be a known device for non-positive or positive holding and / or clamping a lift 09; Be 11, such. B. positive or positive mechanisms, spring force or gear driven terminal strips or shafts, or tangential driver.

An advantageous embodiment of a holding device 26; 33 for a lift 09; 11, in particular for a multi-layer printing blanket 09 or a printing plate 11, is the example of a multi-layer printing blanket 09 in Fig. 8 shown representative of the channel 14 in the transfer cylinder 02. The arrangement of such or similar holding means 33 for the printing plates 11 in the channels 12; 13 is an example in Fig. 2 indicated.

The holding device 26 is arranged in the axially extending channel 14 of the transfer cylinder 02 for holding the blanket 09. The operation of the device for clamping or holding the multi-part blanket 09 via a rotatably mounted in the channel 14 of the transfer cylinder 02 shaft 27, for example, a spindle 27 with pressure pieces 28th

The parallel to the axis of the transfer cylinder 02 extending to the tangent of the lateral surface by 30 to 60 °, in particular by about 45 °, inclined channel 14 has a gap 29 on the lateral surface of the transfer cylinder 02 and a lying inside the transfer cylinder 02, with the gap 29 connected, bore 31 on. The width b29 of the gap 29 in the region of the circumferential surface in the circumferential direction of the transfer cylinder (02, 03, 07, 08) is greater than twice the thickness of one of the ends 23; 24 of the blanket 09, which in the present example is equivalent to twice the thickness of the support plate 21. For the width b29 of the gap 29 is advantageously 1 mm ≤ b29 ≤ 5 mm, in particular b29 ≤ 3 mm. In the case of a simple blanket 09, the width b29 is insignificantly greater than twice the thickness of the blanket 09, in the case of coated up to the ends of the carrier plate 21 multi-layered blanket 09, the width b29 is insignificantly greater than twice the thickness of the coated end 23; 24 of the multi-layer blanket 09 to choose.

In the bore 31, the shaft 27, in the example, a pivotable spindle 27, arranged in which the pressure pieces 28, z. B. stamp, balls or similar, are arranged directed resiliently and radially outward.

For clamping the blanket 09 both ends 23; 24 of the blanket 09, in the example equivalent to the ends of the support plate 21, guided in the gap 29 and the spindle 27 with the pressure pieces 28 so pivoted that these almost perpendicular to the leading and trailing end 23 and 24 of the blanket 09 and the support plate 21 and a cylinder-fixed wall 32 presses and holds this non-positively in the gap 29. If a plurality of printing blankets 09 are arranged one behind the other in the circumferential direction of the transfer cylinder 02, a forward and a trailing end 23 and 24 of adjacent printing blankets 09 act together in each case. The holding device 26 may additionally comprise a slide, not shown, which in addition to the ends 23 and 24 in the gap 29 can be inserted and the gap 29 terminates to the outside. Advantageously, this slide is connected to the spindle 27, so that it is moved in pivoting of the spindle 27 in or out of the gap 29. The width b29 of the gap 29 is formed correspondingly larger when using such a slider.

The channels 12; 13 of the forme cylinder 03; 08 are in a preferred embodiment as for the channel 14; 16; 17; 18 also as to the tangent of the lateral surface by 30 to 60 °, in particular by approximately 45 °, inclined narrow slots 12; 13, which has a width b12 (FIG. Fig. 1, 2 ) in the region of the lateral surface in the circumferential direction, which is greater than twice the thickness of the printing plate 11. For the width b12 of the slot 12, advantageously 1 mm ≦ b12 ≦ 5 mm, in particular b12 ≦ 3 mm. For an exemplary schematic representation of the holding device 33 for the printing plate 11 is shown in the multi-part blanket 09 Fig. 8 only the multi-part blanket 09 (from support plate 21 and layer 22) by a printing plate 11 with bent, in the channel 12; To replace 13 reaching ends. The reference number for the width b29 would correspond to the width b12 and the reference numeral for the transfer cylinder 02 of the forme cylinder, z. B. 03. The ends 23; 24 correspond to the bent ends of the printing forme 11.

On a holding device 33 in the channels 12; 13 of the forme cylinder 03; 08 can be omitted if by means of shaping the ends of the printing plate 11 and / or the channels 12; 13 a secure holding is guaranteed.

LIST OF REFERENCE NUMBERS

01

Cylinder pair, first

02

Cylinder, transfer cylinder (01)

03

Cylinder, forme cylinder (01)

04

substrate

05

-

06

Cylinder pair, second

07

Cylinder, transfer cylinder (06)

08

Cylinder, forme cylinder (06)

09

Elevator, blanket, blanket

10

-

11

Elevator, printing form, printing plate

12

Channel; Slot (03; 08)

13

Channel; Slot (03; 08)

14

Channel (02; 07)

15

-

16

Channel (02; 07)

17

Channel (02; 07)

18

Channel (02; 07)

19

-

20

-

21

Carrier plate (09)

22

Layer (09)

23

End (09)

24

End (09)

25

-

26

holder

27

Shaft, spindle

28

Pressure piece

29

gap

30

-

31

Bore (02; 03; 07; 08)

32

Wall (02; 03; 07; 08)

33

holder

b12

Width (12; 13)

b19

Width (19)

Claims (25)

1. A printing couple of a rotary printing press with a transfer cylinder (02; 07) with at least one channel (14; 16; 17; 18) for receiving a plurality of printing blankets (09) and a forme cylinder (03; 08) arranged so as to co-operate with the transfer cylinder (02; 07) as a pair of cylinders (01; 06), wherein the barrel of the forme cylinder (03; 08) and of the transfer cylinder (02; 07) has a width which corresponds to approximately six vertical newspaper pages, characterized in that the forme cylinder (03; 08) has two channels (12; 13) which are offset by 180° in the peripheral direction and which extend in each case almost over the entire length of the barrel of the forme cylinder (03; 08), bearer rings are provided on the cylinders (02; 03; 07; 08), and the plurality of printing blankets (09) are produced with multiple layers in each case and having a support plate (21) and a layer (22) joined to the support plate (21).
2. A printing couple according to Claim 1, characterized in that the forme cylinder (03; 08) and the transfer cylinder (02; 07) have the same circumference.
3. A printing couple according to Claim 1, characterized in that the printing blankets (09) are arranged with their ends offset with respect to one another in the peripheral direction in different channels (14; 16; 17; 18).
4. A printing couple according to Claim 1, characterized in that the barrel of the transfer cylinder (02; 07) has a circumference which corresponds to at least two horizontal or vertical newspaper pages.
5. A printing couple according to Claim 1, characterized in that the transfer cylinder (02; 07) has three printing blankets (09) which are arranged adjacent to one another in the longitudinal direction of the transfer cylinder (02; 07) and which are arranged substantially over the entire periphery in each case.
6. A printing couple according to Claim 1, characterized in that in the region of the external face the channel (14; 16; 17; 18) of the transfer cylinder (02; 07) has a gap (29) with a width (b29) in the peripheral direction which is larger than twice the thickness of one of the ends (23; 24) of the printing blanket (09) and less than or equal to 3 mm.
7. A printing couple according to Claim 1, characterized in that the printing blankets (09) are arranged with their ends in alignment with one another in the axial direction of the transfer cylinder (02; 07).
8. A printing couple according to Claim 1, characterized in that the ratio of the circumference of the transfer cylinder (02; 07) to the forme cylinder (03; 08) is an integral number.
9. A printing couple according to Claim 1, characterized in that at least one of the channels (14; 16; 17; 18) of the transfer cylinder (02; 07) rolls on the periphery of the forme cylinder (03; 08) in the vicinity of a channel (12; 13).
10. A printing couple according to Claim 1, characterized in that the channels (12; 13; 14; 16; 17; 18) are arranged at a uniform distance in the peripheral direction.
11. A printing couple according to Claim 1, characterized in that each channel (14; 16; 17; 18) of the transfer cylinder (02; 07) has at least one holding device (26) for the printing blanket (09) in each case.
12. A printing couple according to Claim 1, characterized in that the printing formes (11) are arranged with their ends in a channel (12; 13) or at least in alignment along the forme cylinder (03; 08).
13. A printing couple according to Claim 1, characterized in that the forme cylinder (03; 08) has a plurality of printing formes (11) arranged one behind the other in the peripheral direction.
14. A printing couple according to Claim 1, characterized in that the barrel of the forme cylinder (03; 08) has a circumference which corresponds to at least two horizontal or vertical newspaper pages.
15. A printing couple according to Claim 1, characterized in that in the region of the external face the channel (12; 13) of the forme cylinder (03; 08) has a width (b12) in the peripheral direction which is larger than twice the thickness of the printing forme (11) and is in the range of between 1 mm and 5 mm, and in particular less than or equal to 3 mm.
16. A printing couple according to Claim 1, characterized in that the ratio of the circumference of the transfer cylinder (02; 07) to the forme cylinder (03; 08) is an integral number.
17. A printing couple according to Claim 1, characterized in that in the peripheral direction the transfer cylinder (02; 07) has two channels (14; 16; 17; 18) arranged one behind the other.
18. A printing couple according to Claim 1, characterized in that in the axial direction the transfer cylinder (02; 07) has two channels adjacent to each other, and the channels (14; 16; 17; 18) are arranged one behind the other in the peripheral direction.
19. A printing couple according to any one of Claims 1, 19 or 20, characterized in that the channels (12; 13; 14; 16; 17; 18) are arranged at a uniform distance in the peripheral direction.
20. A printing couple according to Claim 21, characterized in that two channels (12; 13; 14; 16; 17; 18) are arranged offset with respect to each other by approximately 180° in the peripheral direction.
21. A printing couple according to Claim 1, characterized in that the channel (12; 13; 14; 16; 17; 18) has at least one holding device (26; 33).
22. A printing couple according to Claim 1, characterized in that the transfer cylinder (02; 07) has at least two channels (14; 16; 17; 18) which are arranged offset with respect to each other in the peripheral direction.
23. A printing couple according to Claim 1, characterized in that the printing couple has a counter-impression cylinder which co-operates with the transfer cylinder (02; 07) and which is different from a second transfer cylinder.
24. A printing couple according to Claim 1, characterized in that the printing blankets (09) are arranged with their ends offset with respect to each other in an alternating manner by approximately 180° in the peripheral direction.
25. A printing couple according to Claim 1, characterized in that in the region of the external face the channels (14; 16; 17; 18) of the transfer cylinder (02; 07) have a gap (29) with a width (b29) in the peripheral direction of from 1 to 5 mm.

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