The method of printing machine and operation thereof
Technical field
The present invention relates to a kind of according to claim 1 printing machine as described in the preamble.The invention still further relates to a kind of in addition by claim 4 method that is used for operating printing machine as described in the preamble.
Background technology
By prior art, just disclose a kind of sheet-fed press by EP0812683A1, it has a plurality of printing units, and wherein each printing unit comprises a pairing impression cylinder, blanket cylinder that rolls and an inking mechanism and an edition-0 moistening mechanism on this pairing impression cylinder.In the disclosed sheet-fed press, pairing impression cylinder, blanket cylinder, inking mechanism and the edition-0 moistening mechanism of printing unit are driven by a main driving machine structure in the document.On the contrary, for the plate cylinder of printing unit has set independent driving mechanism direct driving mechanism in other words, the main driving machine structure of itself and printing machine takes off the independent motor-driven driving plate cylinder in coupling ground.Under the continuous printing condition of printing unit, pairing impression cylinder, blanket cylinder, inking mechanism and the edition-0 moistening mechanism of printing unit are driven by the main driving machine structure, and the plate cylinder of printing unit is just synchronous with the main driving machine structure on the contrary by corresponding directly drive mechanism.
For plate cylinder being carried out independent motor-driven driving, in by printing machine known in putting into practice, for each plate cylinder has also set a governor motion except direct driving mechanism, this governor motion synchronously drives the blanket cylinder of plate cylinder and corresponding printing unit in the printing work continuously, and synchronously drive with the main driving machine structure of printing machine thus, thereby can import the position actual value that version corrected value (Umfangsregisterkorrekturwert) is calculated with circumference of corresponding blanket cylinder as the situation theory value to the governor motion of each plate cylinder.
By circumference the version corrected value has been realized that the circumference between each printing unit proofreaies and correct version, wherein according to prior art, this circumference all is constant to the version corrected value in the whole loading moment scope of printing machine, and is static thus.Therefore for example can not compensate circumference that the change change of rotating speed in other words by speed causes to the version deviation.
Summary of the invention
Set out thus, task of the present invention provides a kind of novel printing machine and a kind of method that is used to move this printing machine.
This task solves by the described printing machine of claim 1 by a kind of.This printing machine have a governor motion higher level who is arranged on plate cylinder to the version governor motion, it can be used as the position actual value that the input parameter is imported the blanket cylinder of each printing unit, wherein version governor motion position actual value according to corresponding blanket cylinder in continuous printing work is dynamically mated circumference of each printing unit to the version corrected value.
According to the present invention, be arranged on governor motion higher level the version governor motion dynamically is being complementary to the version corrected value with circumference of each printing unit of plate cylinder in continuous printing work, wherein for this reason can be to position actual value to the blanket cylinder of version governor motion input printing unit.The variation of the load moment state by printing machine, especially the circumference that causes of velocity variations or the rotation speed change by printing machine can utilize the present invention to compensate to the version deviation.Best print result can all be provided in the whole load moment scope of printing machine thus.Can save the longitudinal axis in case of necessity, the longitudinal axis is used to compensate circumference to the version deviation in the disclosed printing machine in by prior art.
Preferably to preserve the point of theory of specific print out task special use poor for each printing unit in to the version governor motion, this differential seat angle be meant corresponding printing unit blanket cylinder and with reference to the printing unit blanket cylinder between differential seat angle, wherein when in continuous printing work, serving as that the deviation with the point of theory difference of preserving for described at least one printing unit is determined on the basis with the position actual value of at least one printing unit blanket cylinder, so to the version governor motion dynamically coupling about the corresponding circumference of this deviation to the version corrected value.
Stipulate in independent claims 4 by the method that is used for operating printing machine of the present invention.
Description of drawings
The preferred improvement project of the present invention is obtained by dependent claims and the following description.Describe a kind of preferred improvement project of the present invention below with reference to the accompanying drawings in detail, but the present invention is not limited to this embodiment.
Fig. 1 shows the block diagram that is used to illustrate by the disclosed printing machine of prior art;
Fig. 2 shows the block diagram that is used to illustrate by printing machine of the present invention.
The specific embodiment
Describe in detail before the present invention according to Fig. 2 below, at first describe the principle of previous known sheet-fed press according to Fig. 1, this known sheet-fed press has the plate cylinder of independent motor-driven driving and circumference to the version calibration function.
Fig. 1 shows very simplifiedly by the block diagrams of the known sheet-fed press of prior art in four printing units 10,11,12 and 13 scopes, and wherein each printing unit comprises a pairing impression cylinder 14, the plate cylinder 16 in a blanket cylinder 15 that rolls on this pairing impression cylinder 14 and a rolling on this blanket cylinder 15.Plate cylinder 16 is also referred to as the coining plate cylinder.Unshowned inking mechanism in Fig. 1 and the edition-0 moistening mechanism and plate cylinder 16 actings in conjunction of printing unit 10 to 13.In the embodiment shown, between the pairing impression cylinder 14 of adjacent printing unit, located a transferring roller 17 respectively, be used for and be transported to the next printing unit from a printing unit at the printed sheet that sheet-fed press prints.The pairing impression cylinder 14 of printing unit 10 to 13 and the transferring roller 17 of locating between the pairing impression cylinder 14 of adjacent printing unit correspondingly are used for printed sheet to be printed is carried by sheet-fed press, and therefore are also referred to as the printed sheet guide pulley.
In the sheet-fed press that schematically illustrates in Fig. 1, the pairing impression cylinder 14 of each printing unit 10 to 13 and blanket cylinder 15 and transferring roller 17 are driven by a unshowned main driving machine structure of sheet-fed press at least.Each plate cylinder 16 for each printing unit 10 to 13 sets a same unshowned independent driving mechanism or direct driving mechanism on the contrary, the main driving machine structure of plate cylinder 16 and sheet-fed press can be taken off coupling ground by means of it and drive.The plate cylinder 16 of sheet-fed press is the plate cylinder of independent motor-driven driving accordingly.
Printing unshowned inking mechanism of unit 10 to 13 and same unshowned edition-0 moistening mechanism or the main driving machine structure by sheet-fed press drive, the perhaps independent driving mechanism of the plate cylinder 16 by being equipped on corresponding printing unit 10 to 13 accordingly or directly drive mechanism.
In the continuous printing work of sheet-fed press, main driving machine structure by sheet-fed press drives pairing impression cylinder 14, blanket cylinder 15 and transferring roller 17 at least accordingly, the plate cylinder of opposite printing unit is driven by corresponding directly driving mechanism, and is synchronous with the main driving machine structure or rather.Each plate cylinder 16 that for this reason is the printing unit 10 to 13 of sheet-fed press also sets a governor motion 18 except unshowned direct driving mechanism, wherein can import with the position actual value 21 of circumference to the blanket cylinder that respectively prints unit 15 of version corrected value 20 calculating as the situation theory value 19 of each plate cylinder 16 to each governor motion 18 of printing unit.The governor motion 18 of each plate cylinder 16 serve as conditioning signal 24 that is used for the unshowned direct driving mechanism of each plate cylinder 16 of basic generation with the adjusting deviation 22 between the relevant position actual value 23 of the situation theory value 19 of plate cylinder 16 of printing unit and plate cylinder 16.
The circumference of each printing unit 10 to 13 of sheet-fed press is set by control device 25 according to Fig. 1 version corrected value 20.The circumference of each printing unit 10 to 13 all keeps constant according to prior art to version corrected value 20 in the whole load moment scope of sheet-fed press at this, and is static thus.The circumference that is changed the sheet-fed press that causes by load moment correspondingly can not be by being compensated by the disclosed sheet-fed press of prior art according to Fig. 1 to the version deviation.Described load moment change can by velocity variations in other words rotation speed change, cause by variations in temperature or other incident that influences the load moment of printing machine.
Fig. 2 shows by the unusual simplified block diagram of sheet-fed press of the present invention, wherein for fear of unnecessary repetition, uses identical Reference numeral for identical assembly.
Below only some details are gone through, the difference by the disclosed sheet-fed press of prior art by sheet-fed press of the present invention and Fig. 1 among Fig. 2 just is this.
By sheet-fed press of the present invention have one be arranged on governor motion 18 higher levels that are equipped on printing unit 10 to 13 plate cylinders 16 to version governor motion 26.Version governor motion 26 is imported the position actual value 21 of the blanket cylinder 15 of printing unit 10 to 13 as the input parameter to this.To version governor motion 26 with the position actual value 21 of blanket cylinder 15 serve as the basis dynamically coupling for the situation theory value 19 employed circumference of determining blanket cylinder 16 to version corrected value 20, compensate thus by load moment and change caused circumference the version deviation by sheet-fed press of the present invention.Load moment change may by the velocity variations of printing machine in other words rotation speed change cause.In pressing sheet-fed press of the present invention, for circumference to version corrected value 20 be not accordingly static, in whole load moment scope, keep constant value, and dynamic value more precisely, the circumference that its size changes when numerical value depends on load moment variations on the printing machine in other words is to the version deviation.
In to version governor motion 26, preserved the blanket cylinder 15 that respectively prints unit and poor with reference to the point of theory between the blanket cylinder of printing unit for each printing unit 10 to 13.Each of sheet-fed press printing unit arbitrarily can be as reference printing unit.Then, when in continuous printing work, serve as that the deviation with the point of theory difference of being preserved for this at least one printing unit is determined on the basis with the position actual value 21 of the blanket cylinder 15 of at least one printing unit 10 to 13 to version governor motion 26, this to version governor motion 26 with regard to dynamically mate this printing unit about the circumference of determined deviation to version corrected value 20.In continuous printing work, realized thus the Dynamic Theory value of the situation theory value 19 of the corresponding plate cylinder 16 of corresponding printing unit is mated.
Be meant that for the point of theory difference of preserving in to version governor motion 26 point of theory relevant with specific print job is poor, it is adjusting duration of work calculating acquisition before carrying out print job, preserves then to be stored in other words in the version governor motion 26.
In by the sheet-fed press of its plate cylinder 16 independent motor-driven drivings of the present invention can by means of will change by load moment version governor motion 26, for example by rotation speed change in other words the circumference that causes of velocity variations the version deviation is compensated in printing figure, wherein being this carries out theoretical value correction to the situation theory value 19 of the plate cylinder 16 of independent motor-driven driving to version governor motion 26 according to position actual value 21 of corresponding blanket cylinder 15.The startup of so-called sheet-fed press coupling changes (Hochlaufpasseraenderung) can be avoided reliably by means of the present invention, though or rather sheet-fed press not have the longitudinal axis also be like this.
Reference numerals list
10 printing units
11 printing units
12 printing units
13 printing units
14 pairing impression cylinders
15 blanket cylinders
16 plate cylinders
17 transferring rollers
18 governor motions
19 situation theory values
20 circumference are to the version corrected value
21 position actual values
22 regulate deviation
23 position actual values
24 conditioning signals
25 control device
26 pairs of version governor motions