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The operation which is possible with the installation shown in FIGS. 1 and 2 can best be understood with reference to the corrugated paper web 18 shown in FIGS. 4 and 5. FIG. 4 shows the moment at which the corrugated paper web 18 leaves the laminating station 15, i.e. at which the printing is completed.
According to FIG. 4, four patterns are printed over the width of the corrugated paper web 18, namely the double pattern with the printed picture A and the pat- tern length 36, at the center a different pattern with the printed picture B and the pattern length 37 and at the other edge a third pattern with the printed picture C and the pattern length 38.
It is understood that this corrugated paper web 18 is then severed by the longitudinal cutters 17 which are indicated only by arrows. The transverse severing is effected by the transverse cutters 19, respectively, rotary punches.
FIG. 5 shows again the corrugated paper web 18, but after the print application with the printed picture A has been completed. In its place a print application with the printed picture D was carried out. The print application B was retained because here for example the required number has not yet been reached. In addition, the switch-over from the printing run with the printed picture C to the printed picture E is just being illustrated. The pattern with the printed picture D has the pattern length 39 and the print with the printed picture E has the pattern length 40. As a rule, such a change of production results only in a very small amount of scrap (see change-over of the printed pattern C to E).
FIG. 6 shows a part of the main drive shaft 39 of the corrugated paper machine. The main drive shaft 39 extends throughout the entire length of the corrugated paper machine. All drives are derived from it in the area for each of the printing stations. Each inpidual printing station 13 has a transmission 40 as diagrammatically shown in FIG. 6. This transmission 40 consists of the following inpidual components: The core of the trans- mission 4ff is a planetary gear stage 41. The one input 43,i.e. for example the outer gear of the planetary gear stage, meshes with a gear 43 which is journaled on the main drive shaft 39 via a ball bearing 44. A first coupling (friction coupling 45) and a second mechanical engagement coupling 46 are provided between the gear43 and the main drive shaft. When the jointing station is not in operation, the two couplings 45 and 46 are dis-ellgaged.
An arresting device 47 which may be for example electromechanically operable, having a pin that can be pushed between the teeth of the gear 43, can be used to additionally block the gear 43-
This is always effected when a carrier band 30 at this printing station 13 is to be exchanged. The second input49 of the planetary gear stage 41 is connected via a gear50 with a setting device 51 for fine adjustment. Between the setting device 51 and the gear 50 a coupling 52 is provided. An additional gear 54 is mounted on the shaft 53 and cooperates with a further gear $5 on the shaft 56 of a second setting device 57 for coarse adjustment purposes.
The two setting devices 51 and 57 may be constructed as setting motors, for example it is achieved that during a step of approximately 200 milliseconds of the setting device 51 for the fine adjustment a correction at the circumference of the counter-pressure cylinder 28 of approximately 0.16 mm is obtained.
At the output 58 of the planetary gear stage 41 there is provided a bevel gear stage 59 with the shaft 60, which leads to the printing cylinder 28. In this manner, a derivation of the drive through 90s is obtained.
This is necessary because the main drive shaft 39 extends in longitudinal direction of the machine, whereas the printing stages are integrated transversely thereto in the corrugated paper installation.
When the gear 43 is arrested by the device 47 one or in both of the setting devices 51 and 57 can operate it, whereby the installed carrier band of the corresponding printing station advances slowly. Thus, a certain pre- adjustment of the mark on this carrier band can be effected in preparation for the relative pattern rapport.