EP1318911B1 - Method for operating a printing unit. - Google Patents

Abstract

The unit has at least four cylinders with a first pair of first forme and transfer cylinders and a second pair of second forme and transfer cylinders, whereby the transfer cylinders work together in a print-on position. At least one of the transfer cylinders has a set up speed that differs from a production speed and from null and the associated forme cylinder simultaneously has a set-up speed that differs from a production speed and from null. The unit has at least four cylinders with a first pair of a first forme cylinder (01) and a first transfer cylinder (02) and a second pair of a second forme cylinder (09) and a second transfer cylinder (11), whereby the transfer cylinders work together in a print-on position. At least one of the transfer cylinders has a set up revolution rate that differs from a production revolution rate and from null and the associated forme cylinder simultaneously has a set-up revolution rate that differs from a production revolution rate and from null.

Description

The invention relates to a method for operating a printing unit according to the preamble of claim 1.

From the DE 196 03 663 A1 a four-cylinder printing unit is known, wherein the two co-operating transfer cylinders are fixedly coupled together, and are driven either via the drive of one or both associated form cylinder or via a connectable to the motors cross-shaft. In one mode, one of the forme cylinder can be shut down for the purpose of a plate change, while the associated transfer cylinder continues to run synchronously with the second forme cylinder.

The EP 09 97 273 A2 discloses an operating mode of a cylinder printing unit, wherein a forme cylinder is offset from the remaining co-acting cylinders. The parked form cylinder is rotatable in one example by a drive motor and in another example by an auxiliary motor.

The invention has for its object to provide a method for operating a printing unit.

The object is achieved by the features of claim 1.

The achievable with the present invention consist in particular that a large variety of operation and variability of a printing unit or a cylinder composite is created.

For example, cylinder or cylinder groups can be independent of each other, move at different speeds or directions of rotation, which is required, for example, when printing plate or blanket change, the collection of a paper web, the independent inking or washing of rollers and cylinders. In particular, different actions of the setup with the standstill (zero speed) or the production speed different setup speed or speed for each type of cylinder are thus next to each other, or possible in running or stationary paper web.

Particularly advantageous is the simultaneous fulfillment of several different requirements for different components of a printing unit or a printing unit. The modes of operation, on the one hand, save time and thus reduce the product unit costs and, on the other hand, make it possible to carry out various set-up work with the paper web running at production speed or in drawing speed. A flying plate change for the one- or two-sided Imprintbetrieb is possible. For example, in advantageous operating conditions, a printing plate is changed or pre-dyed, while the assigned transfer cylinder continues to rotate at production speed, or else a washing, a pre-inking or else a change of the elevator takes place.

An advantageous mode of operation for the case of two pairs, each having a forming cylinder and a transfer cylinder, is rotating one of the two forme cylinders at a setup speed while the remaining cylinders continue to rotate at production speed. Also, both transfer cylinders can stand still or rotate at a rotational speed for drawing in a paper web or at production speed, while one of the form cylinder or both are dyed.

Also for four-cylinder printing units and in particular for eight-cylinder printing units formed from two four-cylinder printing units are manifold, especially with regard to the flying plate change and the Imprinterfunktionalität Operating conditions advantageous. A printing operation can be maintained, for example, while one or more forme cylinder, with different from the production speed speed and z. T. also the direction of rotation, is or will be changed.

A y- or λ-shaped six-cylinder printing unit is z. B. flexible usable for the 2/1-Fortdruck or even for the flying plate change or imprint function during the 1/1 printing when one of the forme cylinder is operated at a speed and direction of rotation for the change, while all other cylinders with Turn production speed. The transfer cylinder assigned to the forme cylinder to be changed is, for example, operated simultaneously with a rotational speed and a direction of rotation for washing or otherwise. The same applies to an o. G. Seven-, nine- or ten-cylinder printing unit.

Even when setting up before starting or when printing is finished, the operating states are of great importance due to flexibility and time and wasteful spam. For example, forme cylinder and transfer cylinder can go through different setup programs simultaneously.

Also advantageous is an independent operation of the rollers associated with the cylinders for the color application. For example, regardless of the speed and the direction of rotation, the washing or a pre-inking, while the forme cylinder also undergoes a set-up program.

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

Fig. 1

eine schematische Seitenansicht eines Form- und Übertragungszylinders eines Druckwerkes mit zugeordneter Walze;

Fig. 2

eine schematische Seitenansicht einer Vierzylinder-Druckeinheit;

Fig. 3

eine schematische Seitenansicht einer Sechszylinder-Druckeinheit;

Fig. 4

eine schematische Seitenansicht einer Achtzylinder-Druckeinheit;

Fig. 5

eine schematische Seitenansicht einer Vierzylinder-Druckeinheit mit abgestelltem Formzylinder;

Fig. 6

eine schematische Seitenansicht einer Vierzylinder-Druckeinheit mit zwei abgestellten Formzylindern;

Show it:

Fig. 1

a schematic side view of a forming and transfer cylinder of a Printing unit with associated roller;

Fig. 2

a schematic side view of a four-cylinder printing unit;

Fig. 3

a schematic side view of a six-cylinder printing unit;

Fig. 4

a schematic side view of an eight-cylinder printing unit;

Fig. 5

a schematic side view of a four-cylinder printing unit with parked cylinder form;

Fig. 6

a schematic side view of a four-cylinder printing unit with two parked cylinders form;

A printing unit of a printing press, in particular a rotary printing press, has a first cylinder 01, z. B. a forme cylinder 01, and a cooperating in a pressure-on position second cylinder 02, z. B. a first transfer cylinder 02 of a printing unit 03. The forme cylinder 01 can with a roller 04, z. As an ink roller 04, in particular an inking roller 04 or a grid 04 or Aniloxwalze 04, cooperate. The transfer cylinder 02 acts in a print-on position with a web 06, for example, a printing substrate 06, in particular a paper web 06, together.

The forme cylinder 01 is rotatable independently of the transfer cylinder 02, ie it rotates as a function of the operating state z. T. with the transfer cylinder 02 different speeds and / or directions of rotation. Likewise, the transfer cylinder 02 rotates z. T. regardless of the forme cylinder 01.

The operating states are defined below in terms of rotational speeds or effective peripheral speeds on the lateral surfaces, referred to below as "speeds". The operating conditions referred to by the term "speed" shall be applied to the term "speed" in the same way.

The forme cylinder 01 may occupy one or more of the following operating conditions: it may be at a standstill, i. H. However, it can also rotate at a production speed PFZ or a setup speed RFZ, which i. d. R. from standstill NFZ and the production speed PFZ is different.

The setup speed RFZ can in turn be a speed DWFZ for the change of the printing form, a speed VEFZ for the pre-inking or a speed WFZ for the washing. Another set-up speed RFZ can also be a speed TFFZ for dry running, d. H. the decolorization of the forme cylinder 01 on the web 06, or a speed EFZ for retraction of the web 06. In the case of a direct imaging of the surface of the forme cylinder 01 or the printing forme on the forme cylinder 01, the set-up rotational speed RFZ can also represent a rotational speed BBFZ for the imaging.

Also, the transfer cylinder 02 may occupy one or more of the following operating conditions: it may be at a standstill, i. H. he turns at a speed "zero" NÜZ, he can rotate with a production speed PÜZ or a set speed RÜZ, which also i. d. R. from standstill NFZ and the production speed PFZ is different. The setup speed RZZ can again be a speed AWZZ for the change of the elevator, a speed EZZ for drawing in a web 06, a speed WZZ for washing or a speed VEUZ for the pre-inking of the transfer cylinder 02.

The production speed PFZ for the forme cylinder 01 is z. B. between 20,000 and 50,000 revolutions per hour (U / h), preferably at 35,000 to 45,000 U / h. The production speed PZZ of the transfer cylinder 02 likewise between 20,000 and 50,000 U / h, preferably at 35,000 to 45,000 U / h.

The characteristic for the pre-inking speed VEFZ of the forme cylinder 01 is for example in the range of 6,000 to 12,000 U / h.

The speed VEZZ of the transfer cylinder 02 is for example between 6,000 U / h to 12,000 U / h.

For washing the forme cylinder 01, the speed WFZ z. B. at 200 to 1,000 U / h, in particular between 300 and 800 U / h, while the speed WÜZ for washing the Übetragungszylinders 02 z. B. between 300 and 40,000, in particular between 300 to 6,000 U / h.

The speed EFZ of z. B. trailing cylinder 01 for drawing the web 06 is for example 300 to 2,000 U / h, in particular 300 to 800 U / h, which is approximately a retraction speed for the web 06 of 6 to 30 m / min, in particular 6 to 12 m / min corresponds.

The speed EZZ of the transfer cylinder 02 for drawing in the web 06 is, for example, 300 to 2,000 U / h, in particular 300 to 800 U / h, which is approximately a retraction speed for the web 06 of 6 to 30 m / min, in particular 6 to 12 m / min corresponds.

The speed DWFZ can be for the automatic change of the printing form between 300 U / h and 2,000 U / h, in particular between 300 and 1,000 U / h, wherein during the change process usually takes place a direction reversal of the direction of rotation. The speed DWFZ can, however, z. B. in so-called. Jogging, between 120 and 300 U / h.

In direct imaging of the printing plate or the cylinder jacket surface on the forme cylinder 01, z. Example by means of laser / (diodes), the speed BBFZ of the forme cylinder 01 i. d. R. over the production speed PFZ, for example, over 50,000 U / h, in particular over 70,000 U / h for web-fed rotary printing machines, and over 5,000 U / h, in particular between 5,000 and 30,000 U / h for sheet-fed presses.

For the change of the elevator on the transfer cylinder 02, the rotational speed AWZZ is between 300 and 2000 U / h, in particular between 300 and 1000 U / h. If the change of the elevator, as currently preferred, stirred by hand, so the speed AWZZ can also be between 120 and 1,000 U / h.

The speed TFFZ of the forme cylinder 01 for dry running, d. H. Decolorization of the forme cylinder 01, z. B. between 2,000 and 4,000 U / h.

The stated speeds for forme cylinder 01 and transfer cylinder 02 are preferably based on cylinder 01; 02 double the circumference, d. H. on cylinder 01; 02, on the circumference in the circumferential direction two printing plates are fastened one behind the other. The scopes for this are format dependent and are z. B. between 900 mm and 1,300 mm. For the use of cylinders 01; 02 simple circumference, the speeds for the Form 01 and the transfer cylinder 02 are to be doubled. The same applies to printing units 03, wherein a forme cylinder 01 with a simple scope cooperates with a transfer cylinder 02 double the circumference.

For one or more of said speed ranges of the forme cylinder 01 and the transfer cylinder 02, the directions of rotation are left-handed and clockwise possible. These directions of rotation are defined by the following figures, which show the side views of the cylinders 01; 02 represent.

The above operating conditions and preferred speeds are also below to apply to further in the description additional form cylinder, transfer cylinder.

The inking roller 04, designed as a grid or anilox roller 04 or as a rubberized inking roller 04, may be at a standstill, d. H. It rotates at a speed "zero" NW, with production speed PW or with setup speed RW. The set-up speed RW may be a pre-inking speed VEW, a washing washing speed WW, or an ink roller 04 running speed WLW.

The preferred speed ranges for the ink roller 04 depend on the printing process and / or the configuration of the printing unit or the inking unit.

In the following, a distinction is made between a simple rubberized inking roller 04, an anilox 04 or anilox roller 04 and an anilox roller 04 double circumference. The executed as a simple, rubberized inking roller 04 ink roller 04 preferably has approximately one third of the circumference of a forme cylinder 01 double circumference. A directly cooperating with the forme cylinder 01 anilox roller 04 may have a circumference of a forme cylinder 01 simple circumference, or, in particular in the high or flexographic printing, a forme cylinder 01 double circumference.

The production speed PW is z. B. between 40,000 to 100,000 U / h for directly with the forme cylinder 01 acting anilox 04 or anilox roller 04 simple circumference, and between 60,000 and 150,000 U / h in the case of the inking roller 04. For the anilox roller 04 twice the circumference is the Production speed PW z. B. between 20,000 to 50,000 U / h.

The speed VEW for pre-inking the ink roller 04 is z. B. between 12,000 to 24,000 U / h in the case of anilox 04 or anilox roller 04 simple scope and between 18,000 and 36,000 U / h in the case of an inking roller 04.

The speed WW for washing the ink roller 04 is z. B. 600 to 1,600 U / h in the case of an anilox 04 or anilox roller 04 simple scope and is between 900 and 2400 U / h in the case of an inking roller 04th

For the continuation of the inking roller 04 against a drying of the ink, the speed WLW is preferably between 3,000 and 6,000 U / h for the double-sided anilox roller 04, between 6,000 and 12,000 U / h for the straight-lined anilox roller 04 and between 9,000 and 18,000 U / h. h for the inking roller 04.

As already mentioned above, the operating states mentioned are also defined by effective circumferential speeds, in short speeds, of the rotational body:

The production rate of the forme cylinder 01 PFZ is z. B. between 6.4 and 16 m / s, in particular between 11 and 15 m / s. The same applies to the transfer cylinder 02, if available.

The speed of the forme cylinder 01 PWFZ for the automated change of the printing form is z. B. between 0.32 and 0.64 m / s, for manual change z. B. between 0.10 and 0.32 m / s. For the pre-inking of the printing form is the speed VEFZ of the forme cylinder 01 z. B. between 1.9 and 3.9 m / s, while they are for washing the printing form WFZ z. B. between 0.06 and 0.32 m / s, in particular between 0.10 and 0.26 m / s. For the dry driving TFFZ the printing form, the speed of the forme cylinder 01 z. B. between 0.64 and 1.3 m / s. The speed of the forme cylinder BBFZ 01 is generally greater than 16 m / s, in particular greater than 22 m / s for web presses, and for sheetfed presses greater than 1.6 m / s, in particular between 1.6 and 9, 6 m / s. For feeding the web is the speed EFZ of the forme cylinder 01 z. B. between 0.10 and 0.50 m / s, in particular between 0.10 and 0.2 m / s.

For the transfer cylinder 02, the same values or ranges of the forme cylinder 01 are advantageous for the corresponding operating states of the pre-inking VEZZ, for the change of the elevator AWUZ and the retraction of the web EZZ. The speed of the transfer cylinder 02 AWZZ for the manual change of the elevator is between 0.04 and 0.32 m / s. When washing the transfer cylinder 02 WÜZ whose speed is z. B. between 0.10 and 13 m / s, in particular between 0.10 and 1.9 m / s.

The speeds for the inking roller 04 are governed by the operating conditions in the state applied to the forme cylinder 01 according to its speed, so that, for example, the production speed of the inking roller 04 PW also in the range between 6.4 and 16 m / s, in particular between 11 and 15 m /. s is. If the ink roller 04 is executed as an anilox roller 04, then the circumference z. B. correspond approximately to the circumference of a forme cylinder 01 simple scope. If the circumference of the anilox roller 04 is larger, z. B. between 1.0 and 1.2 m, the o. G. Rotate PW to select smaller. In the case of executed as an inking roller 04 ink rollers 04 applies accordingly, wherein the speed to be selected again depends on the scope of the ink rollers 04, which z. B. between 0.35 and 0.5 m.

The speed of the ink roller 04 is for the pre-inking z. B. between 1.9 to 4.0 m / s. and for washing between 0.08 and 0.3 m / s. For continued running, the speed of the ink roller 04 z. B. between 0.95 and 1.95 m / s.

When lying in the lower peripheral region or lower diameter of the anilox roller 04, as z. B. with a double-sized forme cylinder 01 in the direct printing method is advantageous, the above-mentioned areas of rotation speeds for the anilox roller 04 in one advantageous variant to the corresponding speed, z. B. by 0 to 30%, in particular by 10 to 20% increase, so that the advantageous range for the speed is maintained approximately.

Suitable or desired speeds for the mentioned, as a cylinder 01; 02 and rollers 04 executed rotating body 01; 02; 04 can be determined by knowing the effective perimeters for a variety of diameters based on the advantageous speeds.

In the figures, the rollers 04 are generalized and represented with a uniform diameter for simplicity. In the exemplary embodiments, the operating states are described on the basis of rotational speeds. However, the same embodiments are also to read on the operating conditions characterizing speeds.

To limit the number of figures are in the Fig. 1 to 4 the arrangements of the cylinder 01; 02 and rollers 04 each shown spaced from each other. The states of each other employed or spaced cylinder 01; 02 or rollers 04 are apparent from the descriptions in the embodiments and are therefore not removed from the figures alone. The FIGS. 5 and 6 reflect conditions set forth in the exemplary embodiments for starting and stopping cylinders or cylinders.

A first group of embodiments ( Fig. 1 ), first to twelfth embodiment, describes advantageous operating conditions for a first pair 07 of the forme cylinder 01 and the co-acting transfer cylinder 02nd

In a first exemplary embodiment, the forme cylinder 01 rotates with the setup speed RFZ for the purpose of pre-inking, in this case with that characteristic of pre-inking Speed VEFZ. The transfer cylinder 02 is at standstill NÜZ, z. B. to promote an already retracted web 06 not further, which means a reduction of waste. The forme cylinder 01 may have a co-operating inking roller 04, which is either coupled to this, or in an advantageous manner also independently of the forme cylinder 01 rotates. In the present embodiment, this rotates with the peripheral speed of the forme cylinder 01 corresponding set-up speed RW, in the opposite direction of rotation, and is employed on this. The setup speed RW, here the speed VEW for pre-inking the ink roller 04 need not be identical to that of the forme cylinder 01, but is dependent on the peripheral ratio of the forme cylinder 01 and the ink roller 04th

In a second embodiment of the forme cylinder 01 rotates further with the speed VEFZ for the pre-inking, while the transfer cylinder 02 rotates with the setup speed RÜZ corresponding to the speed WÜZ for washing the Übetragungszylinders 02.

In a third embodiment, the forme cylinder 01 rotates at the speed VEFZ for the pre-inking, while the transfer cylinder 02 rotates at the setup speed RZZ in accordance with the speed EZZ for pulling in the web 06.

In a fourth embodiment, the forme cylinder 01 rotates at setup speed RFZ, in this case at the speed DWFZ for changing the printing form. The transfer cylinder 02 rotates simultaneously with the speed EZZ for drawing in the web 06. In the case directly to imbildernder forme cylinder 01 rotates the forme cylinder 01 at the speed BBFZ for imaging of the forme cylinder 01st

In the fifth embodiment rotates the forme cylinder 01 with the speed DWFZ for changing the printing form or in an alternative with the speed BBFZ for imaging the forme cylinder 01, while the transfer cylinder 02 at a standstill NÜZ is located. Form cylinder 01 and transfer cylinder 02 are offset from each other. The ink roller 04 is turned off and is, for example, at standstill NW.

In the sixth embodiment, the forme cylinder 01 rotates at the speed DWFZ for changing the printing form, while the transfer cylinder 02 rotates at the speed WÜZ for the washing. Again, for the case directly to be imaged form cylinder 01 this rotate alternatively with the speed BBFZ for imaging. Form cylinder 01 and transfer cylinder 02 are offset from each other. The ink roller 04 is turned off from the forme cylinder 01 and rotates, for example, also with setup speed RW, the speed VEW for pre-inking, the speed WW for washing the ink roller 04 or the speed WLW for the continuation of the ink roller 04 against drying.

In the seventh embodiment rotates the forme cylinder 01 with the speed DWFZ for changing the printing form or alternatively with the speed BBFZ for direct Bebildem, while the transfer cylinder 02 rotates with the appropriate for the change of the elevator on the transfer cylinder 02 speed AWÜZ. Form cylinder 01 and transfer cylinder 02 are offset from each other. The ink roller 04 is turned off and is, for example, at standstill NW.

In the eighth embodiment, the forme cylinder 01 rotates at the speed DWFZ for changing the printing form, while the transfer cylinder 02 rotates at the production speed PZZ. The ink roller 04 is turned off and is, for example, at a standstill and rotates at zero speed "NW".

In the ninth embodiment, the forme cylinder 01 rotates at the speed WFZ for washing the forme cylinder 01, while the transfer cylinder 02 rotates at the production speed PZZ. The inking roller 04 is turned off and, for example, at standstill, ie it rotates at zero speed NW. The ink roller 04 however, can also rotate at speed WW for washing.

Also in the tenth embodiment, the forme cylinder 01 rotates at the speed WFZ for the washing of the forme cylinder 01, while the transfer cylinder 02, however, is at standstill NÜZ. At the same time, the inking roller 04 can also rotate with the relevant speed WW for washing.

In the eleventh embodiment, the forme cylinder 01 is at standstill NFZ, while the transfer cylinder 02 rotates at the speed EZZ for drawing in the web 06. The ink roller 04 may be off or on.

Also in the twelfth embodiment, the forme cylinder 01 is at a standstill NFZ. while, however, the transfer cylinder 02 rotates at the speed WÜZ for washing the transfer cylinder 02. Again, the ink roller 04 off or be hired.

In a second group of exemplary embodiments ( Fig. 2 ), thirteenth to twentieth embodiment, the first pair 07 acts in a pressure-on position above the web 06 with a second pair 08 of cylinders 09; 11, z. B. from a second forme cylinder 09 and a second transfer cylinder 11, together. In principle, all operating states from the first to twelfth embodiments for the first pair 07 are possible for the second pair 08, parallel and independently of the operating state of the first pair 07. However, it may also be the second pair 07 mechanically coupled. In the following, some advantageous operating modes for a four-cylinder printing unit 12, for example, a bridge printing unit 12 will be described.

In a thirteenth embodiment, the two transfer cylinders 02; 11 hired together and rotate together with one of the forme cylinder 09; 01 with production speed PFZ; PÜZ, while the other of the two forme cylinder 01; 09 with one of the set-up speeds RFZ turns ( Fig. 5 ). The setup speed RFZ here z. B. the speed DWFZ for the change of the printing plate, or in the case directly to imbildernder forme cylinder 01, the speed BBFZ for Bebildern. The rotating in production speed PFZ form cylinder 09; 01 is preferably at the associated transfer cylinder 11; 02 employed and rotates in the opposite direction of rotation to co-acting transfer cylinder 11; 02, which in turn opposite to the other transfer cylinder 02; 11 turns.

In the fourteenth embodiment ( Fig. 5 ) rotates in contrast to the thirteenth embodiment of not rotating with production speed PFZ form cylinder 01; 09 at the speed WFZ for washing the forme cylinder 01; 09th

In a variant of the fourteenth embodiment can not rotate with production speed PFZ forme cylinder 01; 09 but also the speed VEFZ for the pre-inking of the forme cylinder 01; 09 have.

In the fifteenth embodiment ( Fig. 2 ) is the not operated with production speed PFZ form cylinder 01; 09 from the thirteenth embodiment at a standstill commercial vehicle.

In a sixteenth embodiment ( Fig. 6 ) rotate as in the thirteenth embodiment, the two transfer cylinders 02; 11 with production speed PÜZ, while the two forme cylinder 01; 09 with setup speed RFZ, in particular with the speed DWFZ for changing the printing form or the speed BBFZ for imaging rotate, and from the transfer cylinder 02; 11 are turned off.

In a likewise advantageous variant of the sixteenth exemplary embodiment, the forme cylinders 01; 09 the speed VEFZ for pre-inking on.

In a seventeenth embodiment ( Fig. 6 ) Turn the two transfer cylinders 02 and 11 with one of their set-up speeds RZZ, z. B. at the speed EZZ for retraction of the web 06, while both forme cylinder 01; 09 are turned off and also with one of their set-up speeds RFZ, for example, with the speed PWFZ for changing the printing form or alternatively with the speed BBFZ for the Bebildem turn. Forme cylinder 01; 09 and associated transfer cylinder 02; 11 are not employed. Likewise, the ink roller 04 is turned off by the forme cylinder 01.

In likewise advantageous variants of the seventeenth embodiment, the transfer cylinder 02; 11 as the setup speed RÜZ the speed AWZZ for the change of the elevator or rotate with the speed WÜZ for washing. The transfer cylinder 02; 11 are hereby set off from each other.

Likewise, as mentioned in the embodiments one to twelve, only one of the forme cylinder 01; 09 rotate with one of its set-up speeds RFZ, while the associated transfer cylinder 02; 11 has one of his Rüz RÜZ numbers.

In an eighteenth embodiment, one of the two forme cylinder 01; 09 from the seventeenth embodiment at a standstill commercial vehicle.

In the nineteenth embodiment ( Fig. 6 ) are the two transfer cylinders 02; 11 at standstill NÜZ, while at least one of the two forme cylinder 01; 09 rotates with the speed VEFZ for pre-inking. This form cylinder 01; 09 is in an advantageous embodiment, the ink roller 04 employed (dashed line in Fig. 21), which also rotates at its speed VEW for coloring.

In the twentieth embodiment ( Fig. 6 ) Both transfer cylinders 02 and 11 rotate at the speed EZZ for retraction of the web 06, while at least one the two form cylinder 01; 09, preferably both forme cylinder 01; 09, is located at a standstill commercial vehicle.

In a third group of exemplary embodiments ( Fig. 3 ), twenty-first to twenty-sixth embodiment, is to the transfer cylinder 02; 11 one of the two pairs 07; 08, a third pair 13 of cylinders 14; 16, for example, from a third forme cylinder 14 and a third transfer cylinder 16, employed or hired. In principle, all operating states from the first to twelfth embodiments are possible for this third pair 13, parallel and independently of the operating state of the first pair 07 or of the second pair 08, and in parallel and independently of the operating states of the four-cylinder pressure unit 12. The cylinders 14; 16 of the third pair 13 may also be mechanically coupled together, or otherwise operated in accordance with conventional art. In the following, some advantageous operating modes for a six-cylinder printing unit 17, for example a Y-17 or λ printing unit 17 will be described.

In a twenty-first embodiment, two of the forme cylinders 01; 09; 14, z. B. form cylinder 01 and 09, and the two associated transfer cylinder 02; 11 with production speed PFZ; PÜZ, while the third forme cylinder 14 rotates at setup speed RFZ. In the present example, the associated transfer cylinder 16 is employed to the first transfer cylinder 02 of the first pair 07 and also rotates at production speed PÜZ.

In the twenty-second embodiment, the third transfer cylinder 16 is turned off from the twenty-first embodiment of the first transfer cylinder 02 and the third forme cylinder 14 and is at standstill NÜZ.

In the twenty-third embodiment, the third transfer cylinder 16 is of the twenty-first embodiment corresponding to the twenty-second Embodiment of the first transfer cylinder 02 and the third forme cylinder 14 turned off, but he with the set-up speed RZZ, in particular the speed WÜZ for washing the transfer cylinder 02; 11; 16 turns. It takes place at the same time changing the printing form on the forme cylinder 14 and the washing of the elevator of the transfer cylinder 16, while the two pairs 07; 08, for example, the pressure with production speed PFZ; Continue PÜZ.

In the twenty-fourth embodiment, the three transfer cylinders 02; 11; 16 at the speed EÜZ for retraction of the web 06, while the forme cylinder 01; 09; 14 are at a standstill commercial vehicle.

In the twenty-fifth embodiment, the three transfer cylinders 02; 11; 16 at the speed EÜZ for retraction of the web 06, while at least two of the forme cylinder 01; 09; 14 with setup speed RFZ, in particular the speed DWFZ for the change of the elevator or alternatively with the speed BBFZ for the imaging of the forme cylinder 01; 09; Turn 14.

In the twenty-sixth embodiment, the three transfer cylinders 02; 11; 16 at standstill NÜZ, while at least two of the forme cylinder 01; 09; 14 with setup speed RFZ, in particular the speed DWFZ for the change of the printing form, or alternatively with the speed BBFZ for the imaging of the forme cylinder 01; 09; Turn 14.

In a fourth group of embodiments ( Fig. 4 ), twenty-seventh to thirty-fifth embodiment, the third pair 13 is not attached to the first or second pair 07; 08 employed, but forms with a fourth pair 18 of cylinders 19; 21, for example, from a fourth forme cylinder 19 and a fourth transfer cylinder 21, a second four-cylinder printing unit 22. This second four-cylinder printing unit 22, z. B. a second bridge pressure unit 22, together with the first four-cylinder printing unit 12, an eight-cylinder printing unit 23. Basically, for the pairs 13; 18 or for the second four-cylinder printing unit 22, parallel and independent to the operating state of the first pair 07; 08 or the first four-cylinder printing unit 12, all operating conditions from the first to twelfth, as well as the thirteenth to twentieth embodiment possible.

The two bridge printing units 12; 22 are each arranged horizontally aligned one above the other, wherein they rectified or mirrored on an imaginary horizontal, forming a so-called. H-pressure unit, can be arranged. In the following, some advantageous operating modes for the eight-cylinder printing unit 23 will be described.

In the twenty-seventh embodiment, all cylinders rotate 01; 02; 09; 11 of the first, for example, vertically oriented lower four-cylinder printing unit 12 with production speed PFZ; ETI. Also one of the two pairs arranged above 13; 22, in the example, the pair 13, and the transfer cylinder 21 of the fourth pair 18 rotate at production speed PFZ; ETI. The transfer cylinder 02; 11 of the lower four-cylinder printing unit 12 and the transfer cylinder 16; 21 are each hired. The forme cylinder 19 of the fourth pair 18 rotates at one of its set-up speeds RFZ, z. B. with the speed DWFZ for the change of the printing form or alternatively with the speed BBFZ for the imaging of the forme cylinder 01; 09; 14; 19. The two left superimposed transfer cylinder 02; 16 rotate with the same direction of rotation, for example, left-handed, while the two associated transfer cylinder 11; 21 opposite turn, z. B. clockwise. The respective assigned and rotating with production speed PFZ form cylinder 01; 09; 14 rotate counter to the cooperating transfer cylinder 02; 11; 16. Similarly, upper and lower four-cylinder pressure units 12; 22 be reversed.

In the twenty-eighth embodiment, all the cylinders 14 rotate; 16; 19; 21 of the second, for example, horizontally oriented upper four-cylinder printing unit 22 with production speed PFZ; ETI. Also, the two below arranged transfer cylinder 02; 11 of the first and second pair 07 and 08 rotate at production speed PÜZ. The transfer cylinder 02; 11 of the lower four-cylinder printing unit 12 and the transfer cylinder 16; 21 are each hired. The form cylinder 01; 09 of the first and second pairs 07; 08 are of the transfer cylinder 02; Parked 11, wherein at least one of the two forme cylinder 01; 09 with one of its set-up speeds RFZ, z. B. with the speed DWFZ for the change of the printing form or alternatively with the speed BBFZ for the imaging of the forme cylinder 01; 09; 14; 19, turns. Likewise, upper and lower four-cylinder pressure units 12; 22 or arranged in the examples left and right pairs 07; 08; 13; 18 are reversed.

In a twenty-ninth embodiment, the cylinders 14; 16; 19; 21 of the upper four-cylinder printing unit 22 and the two transfer cylinders 02; 11 of the lower four-cylinder printing unit 12 with production speed PFZ, PÜZ, wherein the transfer cylinder 02; 11; 16; 21 are employed in pairs, while the two forme cylinder 01; 09 of the lower four-cylinder printing unit 12 are turned off and rotate with a set-up time RFZ, in particular the speed DWFZ for changing the printing form or BBFZ for imaging. In an advantageous variant of the twenty-ninth embodiment, the forme cylinder 01; 09 at a standstill commercial vehicle.

In a thirtieth embodiment, all four transfer cylinders 02; 11; 16; 21 with one of their set-up speeds RZZ, z. B. with the speed EZZ for feeding the in Fig. 4 web 06, not shown, during at least one of the forme cylinder 01; 09; 14; 19, in an advantageous embodiment at least the two forme cylinder 01; 09; 14; 19 at least one of the two four-cylinder printing units 12; 22 with one of its set-up speeds RFZ, z. B. the speed DWFZ for the change of the printing plate or alternatively with the speed BBFZ for the imaging of the forme cylinder 01; 09; 14; 19, turn. The remaining form cylinder 19; 14; 09; 01 are, for example, at a standstill commercial vehicle.

In the thirty-first embodiment, all but one of two cylinders 01; 02; 09; 11; 14, 16; 19; 21 as in the thirtieth embodiment, but rotate two forme cylinder 01, 09; 14; 19 at least one four-cylinder printing unit 12; 22 with the speed VEFZ for pre-inking.

In a thirty-second embodiment, the cylinders rotate 01; 02; 14; 16; 19; 21 of the three pairs 07; 13; 18 each with production speed PFZ; PÜZ, during the forme cylinder 09 of the second pair 08 with one of its set-up speeds RFZ, z. B. with the speed VEFZ for the pre-inking, and the associated transfer cylinder 11 with one of its set speeds RZZ, z. B. the speed WÜZ for washing the transfer cylinder 11 rotates. However, the transfer cylinder 11 may also be at standstill NÜZ or rotate at the speed AWÜZ for the change of the elevator.

In an equally advantageous alternative of the thirty-second embodiment, the non-production speed PFZ having forme cylinder 09 rotates with the speed DWFZ for the change of the printing plate, or, in the case of a directly to be imaged form cylinder 09, with the speed BBFZ for the Bebildem.

In a thirty-third embodiment, all four transfer cylinders 02; 11; 16; 21 at standstill NÜZ, while the two forme cylinder 01; 09; 14; 19 at least one of the two four-cylinder printing units 12; 22 with setup speed RFZ, in particular with the speed VEFZ for pre-inking the Turn printing form. In an advantageous embodiment, all forme cylinders 01 rotate; 09; 14; 19 with the speed VEFZ for pre-inking the printing form.

In a thirty-fourth embodiment, all four transfer cylinders 02 are again; 11; 16; 21 at standstill NÜZ, while the two forme cylinder 01; 09; 14; 19 at least one of the two four-cylinder printing units 12; 22 with the speed DWFZ for changing the printing form turn. In an advantageous embodiment, all four forme cylinders 01 rotate; 09; 14; 19 with the speed DWFZ for changing the printing form.

In a thirty-fifth embodiment, a transfer cylinder 02 rotates; 11; 16; 21, z. B. the transfer cylinder 02, with setup speed RZZ, in particular with the speed WZZ for washing the transfer cylinder 02, during the associated forme cylinder 01; 09; 14; 19, z. B. the forme cylinder 01, with one of its set-up speeds RFZ, z. B. with the speed VEFZ for pre-inking rotates. However, according to the pair 12 of the first to twelfth embodiments, two or corresponding to the thirteenth to twentieth embodiments of the four-cylinder printing unit 12; 22 all four transfer cylinders 02; 11; 16; 21 with one of their set-up speeds RZZ, z. B. WÜZ for washing, and the associated forme cylinder 01; 09; 14; 19 with one of its set-up speeds RFZ, z. B. the speed VEFZ for pre-inking, be operated.

In the described embodiments, it is advantageous if at least the different in the embodiments, in particular at different speeds rotating cylinder 01; 02; 09; 11; 14; 16; 19; 21; 24; 32 are driven by a separate drive motor. In a preferred embodiment, however, all cylinders 01; 02; 09; 11; 14; 16; 19; 21; 24; 32 of the printing units described individually by a separate drive motor without drive coupling with another cylinder 01; 02; 09; 11; 14; 16; 19; 21; 24; 32 or inking be driven. The drive motors drive the respective cylinder 01; 02; 09; 11; 14; 16; 19; 21; 24; 32 and the inking unit both in the setup mode and during production.

Of particular advantage is the use of position-controlled and / or speed-controlled electric motors. This also applies to the drives of the rollers 04, which may either have its own drive motor, or the inking unit containing the roller 04 has one of the cylinders 01; 02; 09; 11; 14; 16; 19; 21; 24; 32 independent drive motor on.

LIST OF REFERENCE NUMBERS

01

Cylinder, first, forme cylinder, rotary body

02

Cylinder, second, transfer cylinder, first, rotary body

03

printing unit

04

Roller, ink roller, inking roller, anilox roller, anilox roller, rotary body

05

-

06

Web, substrate web, paper web

07

Couple, first

08

Couple, second

09

Cylinder, forme cylinder, second, rotary body

10

-

11

Cylinder, transfer cylinder, second, rotary body

12

Four-cylinder printing unit, bridge printing unit

13

Couple, third

14

Cylinder, forme cylinder, third, rotary body

15

-

16

Cylinder, transfer cylinder, third, rotary body

17

Six-cylinder printing unit, Y printing unit, λ printing unit

18

Couple, fourth

19

Cylinder, forme cylinder, fourth, rotary body

20

-

21

Cylinder, transfer cylinder, fourth rotation body

22

Four-cylinder printing unit, second, bridge unit

23

Eight-cylinder printing unit, H unit

24

Cylinder, impression cylinder, satellite cylinder, steel cylinder, first, rotating body

25

-

26

Three-cylinder printing unit, imprinter

27

Five-cylinder printing unit, semi-satellite

28

Seven-cylinder printing unit, imprinter unit

29

Nine-cylinder printing unit, satellite unit

30

-

31

Ten-cylinder printing unit, ten-cylinder satellite

32

Cylinder, impression cylinder, satellite cylinder, steel cylinder, second

33

Two-cylinder printing unit, flexographic printing unit

speeds

PFZ

Production speed, production speed of the forme cylinder

PÜZ

Production speed, production speed of the transfer cylinder

PSZ

Production speed, production speed of the back pressure or steel cylinder

PW

Production speed, production speed of the roller

RFZ

Setup speed, setup speed of the forme cylinder

Ruez

Setup speed, setup speed of the transfer cylinder

RSZ

Setup speed, setup speed of the back pressure or steel cylinder

RW

Setup speed, setup speed of the roller

NFZ

Form cylinder is at a standstill, zero speed, zero speed

Nuez

Transfer cylinder is at standstill, zero speed, zero speed

NSZ

Counterpressure or steel cylinder is at standstill, zero speed, zero speed

northwest

Roller is at a standstill, zero speed, zero speed

DWFZ

Speed, speed of the Formzytinders for changing the printing form

FSBC

Speed, speed of the forme cylinder for imaging

VEFZ

Speed, speed of the forme cylinder for pre-inking the forme cylinder

WFZ

Speed, speed of the forme cylinder for washing the forme cylinder

TFFZ

Speed, speed of the forme cylinder for dry running of the forme cylinder

EFZ

Speed, speed of the forme cylinder for drawing in a web

AWÜZ

Speed, speed of the transfer cylinder for the change of the elevator

VEÜZ

Speed, speed of the transfer cylinder for pre-inking

WÜZ

Speed, speed of the transfer cylinder for washing the transfer cylinder

EÜZ

Speed, speed of the transfer cylinder for drawing in a web

AWSZ

Speed, speed of Gegendruck- or steel cylinder for the change of the elevator, the support

WSZ

Speed, speed of the counter-pressure or steel cylinder for washing the transfer cylinder

ESZ

Speed, speed of the counter-pressure or steel cylinder for drawing in a web

TFSZ

Speed, speed of the counter-pressure or steel cylinder for dry running

VEW

Speed, roller speed for pre-inking

WW

Speed, speed of the roller for washing

WLW

Speed, speed of the roller for continued operation

Claims (6)

1. Method for operating a printing unit, comprising at least eight cylinders (01; 02; 09; 11; 14; 16; 19; 21), which has a first pair (07; 08; 13; 18) consisting of a first forme cylinder (01; 09; 14; 19) and a first transfer cylinder (02; 11; 16; 21), a second pair (07; 08; 13; 18) consisting of a second forme cylinder (01; 09; 14; 19) and a second transfer cylinder (02; 11; 16; 21), a third pair (07; 08; 13; 18) consisting of a third forme cylinder (01; 09; 14; 19) and a third transfer cylinder (02; 11; 16; 21), and a fourth pair (07; 08; 13; 18) consisting of a fourth forme cylinder (01; 09; 14; 19) and a fourth transfer cylinder (02; 11; 16; 21), two of the four pairs (07; 08; 13; 18) of the transfer cylinders (02; 11; 16; 21) cooperating in a thrown-on position and forming two four-cylinder printing units (12; 22), the two four-cylinder printing unit (12; 22) each being aligned horizontally and being arranged one on top of the other, and the cylinders (01; 02; 09; 11; 14; 16; 19; 21) of the printing unit (23) being driven in each case by a separate drive motor without drive coupling to one of the other cylinders (01; 02; 09; 11; 14; 16; 19; 21), characterized in that the cylinders (01; 02; 09; 11; 14; 16; 19; 21) are driven by the separate drive motors both in the setup mode and during production, at least one of the forme cylinders (01; 09; 14; 16) is driven at a speed (DWFZ) differing from a production speed (PFZ) and from a rotation speed (NFZ) for changing a printing forme on the forme cylinder (01; 09; 14; 19), during the changing process a reversal of the direction of rotation of the printing forme on the forme cylinder (01; 09; 14; 19) taking place, and at the same time for driving the at least one of the forme cylinders (01; 09; 14; 16) at the speed (DWFZ) for changing the printing forme, all four transfer cylinders (02; 11; 16; 21) are driven at a setup speed (RÜZ) different from a production speed (PÜZ) and from a zero speed (NÜZ) than the speed (WÜZ) carried out for washing the transfer cylinder (02; 11; 16; 21).
2. Method according to Claim 1, characterized in that all four transfer cylinders (02; 11; 16; 21) are driven at their speed of rotation (RÜZ) and at least one of the forme cylinders (01; 09; 14; 19), in particular the two forme cylinders (01; 09; 14; 19), of one of the 24-cylinder printing units (12; 22) rotates or rotate at the speed of rotation (DWFZ) for the changing of the printing forme, whereas the other forme cylinders (19; 14; 09; 01) are at a standstill (NFZ).
3. Method according to Claim 1, characterized in that the drive motors are used as position-controlled electric motors.
4. Method according to Claim 1, characterized in that the drive motors are used as speed-controlled electric motors.
5. Method according to Claim 1, characterized in that the production speed (PFZ; PÜZ; PSZ; PW) is determined on the basis of a desired circumferential speed (PFZ; PÜZ; PSZ; PW).
6. Method according to Claim 1, characterized in that the setup speed (RFZ; RÜZ; RSZ; RW) is determined on the basis of a desired circumferential speed (RFZ; RÜZ; RSZ; RW).

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