DE102006030062B3 - Printing press sheet feed cylinder is made up of a number of cylinders placed side-to-side on the same axle - Google Patents

Abstract

The invention relates to a sheet guiding cylinder with elevator in a processing machine. The object of the invention is to provide a sheet guiding cylinder with a lift, which is designed in particular for the promotion of sheet material with large format widths.
This is achieved by the elevator 9 is formed from a plurality of part elevators, the partial lifts are arranged on the format width of the sheet guiding cylinder 1, and are releasably fixable by means arranged on the main body of the sheet guiding cylinder 1 clamping means 14 on the base body.

Description

The The invention relates to a sheet guiding cylinder with elevator in a processing machine according to the generic term of Claim 1. As processing machines are particularly suitable Rotary printing machines (including painting machines), especially Offset printing machines and / or coating units with at least two printing / coating units for the Processing of substrates.

Sheet guiding cylinder with elevator are in processing machines such as rotary printing machines, especially in Perfecting and perfecting machines, in use. Such rotary printing machines have turning devices according to the principle of Eintrommelwendung (for example DD 54703 A known) or the three-drum turn (for example DE 11 07 246 A known). Alternatively, the rotary printing machine may be formed with printing units alternately printing the two sides of the sheet material. Such a sheet-fed printing machine is for example off DE 32 03 879 A1 known.

in the Nice- and Reverse is a bow carried by a sheet guiding cylinder printed on a first page and / or painted and then on the second side printed or painted. It can be the fresh Paint or lacquer from the lower (first side) of the sheet on the lateral surface the sheet guiding cylinder by color / paint splitting lay down. Around the lateral surface not to pollute or the printing / Lacksujet on the sheet not to impair is on a sheet guiding cylinder an elevator with paint / varnish repellent surface detachably arranged.

One Sheet guiding cylinder with a lift of this kind is known from WO 02/087883 A1, which is a special surface with improved color-splitting behavior and improved wear behavior having. The sheet guiding cylinder has a cylindrical body with at least one sheet holding system disposed thereon, and at least a circumferentially arranged elevator. The sheet guiding cylinder can - related on a simple big one Form cylinder - as simply great or several times bigger Cylinder be formed and accordingly in the circumferential direction consider a solvable arranged elevator or carry a plurality of circumferentially releasably arranged elevators. The elevators are fixed by means of clamping means on the sheet guiding cylinder, wherein the clamping means arranged in one or more cylinder channels are. The sheet holding systems are preferably arranged in these cylinder channels.

Out US 6 073 556 A Another elevator for a sheet guiding cylinder is known. The elevator comprises a flexible material and is loosely fixed by clamping means around the sheet guiding cylinder.

The lifts and the clamping means extend - as viewed in Zylinderachsrichtung - always on the full area the sheet guiding cylinder.

Out DE 11 00 651 A For example, a transfer drum with sheet holding system for a rotary printing press is known, which is equipped to prevent the smearing of overlying sheets with strips. In a special embodiment, the transfer drum on the lateral surface on a number of spaced in the axial direction at intervals wire spirals, which are displaceable along axially parallel guide rails in the interior of the drum.

task The invention is a sheet guiding cylinder of the above mentioned above, especially for the promotion of sheet material with huge Format widths is designed.

Is solved the task by the training features of claim 1. Further developments emerge from the dependent claims.

One first advantage of the invention is due to the fact that through the training a sheet guiding cylinder with several over the format width arranged part elevators the handling of the part elevators in the Assembly or Demonta ge on the sheet guiding cylinder is improved. The flatness of the partial lifts on the lateral surface the sheet guiding cylinder will be improved and a possible one Delay noticeable avoided.

In preferred training, each individual sub-elevator on the sheet guiding cylinder individually adjusted and cocked.

One second advantage is that preferably several sub-elevators on the Format width and additional in the circumferential direction (format length) on the sheet material carrying the lateral surface of a sheet guiding cylinder can be arranged.

When third advantage can be listed be that part elevators suitable for the clamping means or holding means any geometric Forms may have in the region of the adjacent side edges. In In one embodiment, the part elevators are arranged symmetrically. In another embodiment, any shape may be chosen for example, based on the DIN-A4 format division, in a simpler or multiple format division or considering the one to be processed Use.

One fourth advantage results from the fact that the elevator forming part lifts not on paint and / or paint-repellent partial lifts (with or without coating) are. Rather, you can Such partial lifts be designed as a simple metallic lifts. For example can be a sheet guiding cylinder part lifts made of steel sheets or chrome plates. These versions are suitable prefers for Sheet guiding cylinder with partial lifts, which at least one separating device (including perforating device), for example, a longitudinal cutting device, assigned. Alternatively, those forming the metallic elevator part lifts arranged on a sheet guiding cylinder, which with an adjacent calender, groove, embossing, groove, Scratching or punching device cooperates.

The Invention is intended to an embodiment be explained in more detail.

there show schematically:

1 a rotary printing machine with two printing units and a coating unit,

2 a sheet guiding cylinder for large format widths in front view,

3 a cylinder channel formation of a sheet guiding cylinder,

4 a double-sized sheet guiding cylinder in side view,

5 a further education of 4 ,

A rotary printing machine for the processing of sheet-shaped substrates (sheet material) comprises at least two printing / coating units I to III , Every printing unit I . II has a cylindrical cylinder having a cylinder and carrying a printing plate form cylinder 4 , The form cylinder 4 is at least one inking unit and if necessary associated with a dampening unit (not shown). In this case, the printing plate is inked by means of applicator rollers, especially inking rollers, with a medium in the form of ink and wetted using a dampening unit by means of at least one applicator roller, especially at least one dampening roller, with a medium in the form of dampening solution. Alternatively includes a coating unit III a form cylinder carrying a printing form (including blanket) 5 (varnishing 5 ) with cylinder channel, which is a dosing system 6 is assigned, wherein the printing plate by means of a applicator roll, especially here with a screened paint application roller and a chambered doctor blade, is wetted with a medium in the form of paint.

According to 1 has a printing unit I . II designed as a plate cylinder form cylinder 4 and a forme cylinder 4 adjacent arranged blanket cylinder 3 on, with the blanket cylinder 3 with a sheet material in the conveying direction 7 transporting sheet guiding cylinder 1 , especially a printing cylinder, works together. The form cylinder 5 of the coating plant III is also a sheet guiding cylinder 1 , especially a printing cylinder, assigned.

For the transport of the sheet material in the conveying direction 7 is between the bow guide cylinders / pressure cylinders 1 at least one sheet guiding cylinder as a transfer cylinder 2 arranged.

In the present example, the sheet guiding cylinder designed as a pressure / transfer cylinder 1 . 2 - Based on a simple-sized form cylinder 4 . 5 - formed double-size and have in a conventional manner circumferentially two diametrically opposed cylinder channels 16 for holding sheet-holding systems 15 on and thus two wings for the sheet material. Between both bow guide cylinders 1 the printing works I . II is an example of a sheet guiding cylinder 8th arranged as a turning device.

The turning device shown 8th is designed as Eintrommelwendung on the principle of trailing edge application. Alternatively, other turning devices can be used.

In the present example, the sheet guiding cylinders / impression cylinders carry 1 of the second printing unit II as well as the coating plant III each arranged on the lateral surface elevators 9 where each of the elevators 9 consists of several over the format width arranged part elevators A to n.

The formed as a printing cylinder sheet guiding cylinder 1 (with partial lifts A-n) in the coating unit III may preferably be activated if necessary separator 18 be assigned. The separator 18 For example, it may be formed as a laser cutting device or a mechanical perforating / cutting device.

According to 2 is a double-sized than pressure cylinder trained sheet guiding cylinder 1 with two circumferentially arranged on a base body cylinder channels 16 shown.

One of the through the cylinder channels 16 limited support surface for the sheet material (partial circumferential surface) contributes in the front view of 2 three sub-lifts A, B, C, which over the format width, ie in the direction of a cylinder axis 19 the sheet guiding cylinder 1 , are arranged. The partial lifts A-C extend in the circumferential direction between two cylinder channels 16 and the ends each of the partial elevator A-C are by means of in each case a cylinder channel 16 arranged clamping devices 14 releasably fixed.

Furthermore, such a sheet guiding cylinder 1 holding means 17 which preferably extend over the format width. In the present embodiment, the retaining means 17 covered by the partial lifts A-C, ie they are not used. For example, such holding means 17 in at least one over the format width extending and in the support surface for the sheet material of the sheet guiding cylinder 1 be arranged integrated slot-shaped channel.

In the present example, the first, second and third sub-elevator A, B, C each have an elevator width 11 . 12 . 13 on. The elevator widths 11 to 13 result in the present example, the format width of the sheet guiding cylinder 1 , The partial lifts A to n can have side edges 10 have, which are arranged over the format width in shock-on-push mounting. In the case shown, the partial lifts A, B, C straight side edges 10 on, which are arranged in bite-on-assembly over the format width strung together.

Alternatively, the side edges 10 also have other training. In a further embodiment, the (immediately) adjacent side edges may be preferred 10 have over the format width such a contour that they are releasably connected to each other form-fitting manner.

As a result, by means of the partial lifts A-n a stable bond in the on the sheet guiding cylinder 1 fixed elevator 9 be achieved. At the same time possible, by straight side edges 10 Conditional typographical disturbances avoided or noticeably reduced.

The partial lifts A-C according to 2 are at one end, preferably at the beginning of printing DA, in at least one clamping means 14 releasably fixed. Here are the clamping devices 14 each in a cylinder channel 16 arranged. At the other end of the partial lifts A-C these are in cylinder channels 16 by means of clamping device 14 , alternatively other holding means 17 releasably fixable.

In one embodiment, in the circumferential direction between two cylinder channels 16 at least one holding means 17 be arranged such that the partial lifts A-n in the circumferential direction between a cylinder channel 16 and at least one holding means 17 extend. The ends of each sub-elevator A-n are in a cylinder channel 16 arranged clamping means 14 and one on the sheet guiding cylinder 1 arranged holding means 17 releasably fixed.

In a further development can over the format width several clamping means 14 be arranged and each end of a sub-elevator A-n is a clamping means 14 be assigned separately.

In a further development can over the format width several clamping means 14 be arranged and one end of each sub-elevator A-n is a clamping means 14 assigned separately and the other end is a holding means 17 assigned.

In 3 is shown on the outer surface of the sheet guiding cylinder 1 arranged sub-lifts A-n folded in the cylinder channel 16 protrude and there by clamping means 14 are releasably fixed against a channel wall. Preferably, the clamping means 14 at the same time the function of the gripper bar for a sheet holding system 15 on. With loosened clamping device 14 or by loosening the clamping device 14 and moving in the conveying direction 7 can in the clamping device position 14 ' the sub-lifts A-n are adjusted or removed or replaced. The clamping / holding means arranged at the other end of the sub-elevators A-n 14 . 17 These sub-lifts A-n can fix the end detachable in a folded or tangential arrangement.

In 4 is a double-sized sheet guiding cylinder 1 with two diametrically arranged, 180 ° offset cylinder channels 16 shown. With classification of the sheet guiding cylinder 1 in the quadrants 20 - 23 is in the conveying direction 7 in the quadrant 20 a cylinder channel 16 with clamping devices 14 arranged. In these clamping devices 14 are detachable the three in the direction of the cylinder axis 19 , fixed over the format width arranged partial lifts A-C at one end. At the other end of the partial lifts A-C, the sheet guiding cylinder 1 in the sheet material carrying lateral surface arranged holding means 17 to releasably fix their ends (partial lifts A-C).

The holding means 17 in the present example are in the area between the quadrants 20 and 21 arranged and extend over the full format width.

Continue to take the holding means 17 in the area between the quadrants 20 and 21 three in the direction of the cylinder axis 19 arranged on the format width fourth to sixth partial lifts D, E, F for the purpose of releasably fixing at one end. The partial lifts D-F extend up to the conveying direction 7 downstream cylinder channel 16 (Area of squares 21 . 22 ), in turn, for releasable fixation of the other ends of the partial lifts D-F clamping means 14 are arranged.

In the latter cylinder channel 16 (squares 21 . 22 ) are still clamping devices 14 arranged, the three seventh to ninth in the direction of the cylinder axis 19 Part hoists G, H, I arranged at one end over the format width for releasable fixation. At the other end of the partial lifts G-I has the sheet guiding cylinder 1 Holding means arranged in the sheet material carrying lateral surface 17 to releasably fix their ends (partial lifts G-I). The holding means 17 in the present example are in the area between the quadrants 22 and 23 arranged and extend over the full format width.

Continue to take the holding means 17 in the area between the quadrants 22 and 23 three in the direction of the cylinder axis 19 arranged on the format width tenth to twelfth partial lifts J, K, L for the purpose of releasably fixing at one end. The partial lifts J-L extend up to the conveying direction 7 nachgeord Neten cylinder channel 16 (Area of squares 23 . 20 ), in turn, for releasably fixing the other ends of the part lifts J-L clamping means 14 are arranged.

In this training are thus in each cylinder channel 16 two, each one channel wall associated clamping means 14 arranged for releasably fixing one end of the sub-lifts A-L.

The holding means 17 can in simple training a groove or joint in the body or sheet guiding cylinder 1 be, in which the elevators A-n are releasably fixed with one end. Such grooves / joints may circumferentially by a defined angular amount, for example 90 °, 180 °, 270 °, 360 °, offset on the sheet guiding cylinder 1 be arranged. Furthermore, the holding means 17 (including as groove or joint) continuously aligned with the cylinder axis 19 ( 2 ) or laterally offset parallel to the cylinder axis 19 be arranged ( 5 ).

In 5 are circumferentially the partial lift A by means of clamping devices 14 and by means of holding means 17 and the partial elevator D with these holding means 17 and another clamping device 14 on the sheet guiding cylinder 1 arranged. In this case, the arrangement of the holding means extends 17 in alignment with the cylinder axis 19 over the elevator width 11 , Furthermore, the sub-section B is peripherally by means of clamping devices 14 and by means of holding means 17 and the partial elevator E with these holding means 17 and another clamping device 14 on the sheet guiding cylinder 1 arranged. In this case, the arrangement of the holding means extends 17 ' by a first amount laterally offset parallel to the cylinder axis 19 over the elevator width 12 , Similarly, the circumference of the partial lift C by means of clamping devices 14 and by means of holding means 17 as well as the partial lift F with these holding means 17 and another clamping device 14 on the sheet guiding cylinder 1 arranged. In this case, the arrangement of the holding means extends 17 '' offset by a second amount laterally offset parallel to the cylinder axis 19 over the elevator width 11 ,

The arrangement of sub-elevators A-n over the format width is not on single-size or double-sized sheet guiding cylinders 1 limited. Rather, such sub-lifts A-n are also on three-size or four times large sheet guiding cylinder 1 with circumferentially three or four arranged cylinder channels 16 fixable. Likewise, a corresponding number of holding means 17 - 17 '' be arranged.

In summary, the on a substantially cylindrical body of the sheet guiding cylinder 1 at least one arranged in the circumferential direction elevator 9 be formed of a plurality of sub-lifts A-n. The partial lifts A-n are beyond the format width of the sheet guiding cylinder 1 are arranged by means of the main body of the sheet guiding cylinder 1 arranged clamping devices 14 releasably fixable on the base body.

1

Sheet guiding cylinder (Pressure cylinder)

2

Sheet guiding cylinder (Transfer cylinder)

3

Blanket cylinder

4

form cylinder (Plate cylinder)

5

form cylinder (Varnishing)

6

dosing

7

conveying direction

8th

Sheet guiding cylinder (Turning means)

9

elevator

10

side edge (Elevator)

11

lift width

12

lift width

13

lift width

14

clamping means

15

Sheet holding system

16

cylinder gap

17

holding means

18

separator

19

cylinder axis

20

first quadrant

21

second quadrant

22

third quadrant

23

fourth quadrant

A

first part elevator

B

second part elevator

C

third part elevator

D

fourth part elevator

e

fifth partial lift

F

sixth part elevator

I

first printing unit

II

second printing unit

III

coating unit

THERE

print start

Claims (7)

Sheet guiding cylinder with elevator in a processing machine, the sheet guiding cylinder having a cylindrical base body with at least one sheet holding system arranged in a cylinder channel and at least one elevator arranged in the circumferential direction, characterized in that the elevator ( 9 ) is formed from a plurality of sub-elevators (A-n) that the partial lifts (A-n) on the format width of the sheet guiding cylinder ( 1 ) are arranged so that the side edges ( 10 ) of the partial lifts (A-n) are arranged over the format width in impact-to-jerk assembly and that the partial lifts (A-n) by means of the main body of the sheet guiding cylinder ( 1 ) arranged tensioning means ( 14 ) are releasably fixable on the body. Sheet guiding cylinder according to claim 1, characterized in that the partial elevators (A-n) extend in the circumferential direction between two cylinder channels ( 16 ) and that the ends of each sub-elevator (A-n) by means of a respective cylinder channel ( 16 ) arranged tensioning means ( 14 ) are releasably fixed. Sheet guiding cylinder according to claim 1, characterized in that in the circumferential direction between two cylinder channels ( 16 ) at least one holding means ( 17 ) is arranged; the sub-elevators (A-n) extend in the circumferential direction between a cylinder channel ( 16 ) and the at least one holding means ( 17 ) and that the ends of each sub-elevator (A-n) by means of a in a cylinder channel ( 16 ) arranged tensioning means ( 14 ) and a holding means ( 17 ) are releasably fixed. Sheet guiding cylinder according to claim 1, characterized in that over the format width of the sheet guiding cylinder ( 1 ) a plurality of clamping means ( 14 ) are arranged and that each end of a sub-elevator (A-n) a clamping means ( 14 ) is assigned separately. Sheet guiding cylinder according to claim 1, characterized in that over the format width of the sheet guiding cylinder ( 1 ) a plurality of clamping means ( 14 ) are arranged and that one end of each sub-elevator (A-n) a clamping means ( 14 ) assigned separately and the other end a holding means ( 17 ) assigned. Sheet guiding cylinder according to claim 3 or 5, characterized in that the holding means ( 17 ) extends over the format width. Sheet guiding cylinder according to claim 1, characterized in that at least the adjacent side edges ( 10 ) of the sub-elevators (A-n) are positively releasably connected via the format width.