DE4401289C2 - Cylinder adjustment device - Google Patents

Description

The invention relates to a cylinder adjustment device according to the preamble of claims 1 to 3.

It is generally known to press in through stops in the Swiveling movement limited eccentric bushings adjustable to the axis distance to store. The printing cylinders are in each cylinder position by the adjustable stops fixed for the adjustment of the pressure cylinder.

The thickness of one between the printing cylinders must be blue end of web dependent cylinder positions with respect to the center distance which the printing cylinder for different web thicknesses by a Individual adjustment of the stops can be corrected at great expense.

The invention has for its object a cylinder adjusting device to create according to the preamble of claims 1-3, which is a simple center distance cage for different cylinder settings rectification of the printing cylinders, especially for different web designs ken, enable. This task will  solved by devices according to the characterizing features of claims 1 to 3.

Different web thicknesses are taken into account by the one-time adjustment of an actuating element in the form of the support element in a simple way the two pressure cylinders in two different cylinders the positions of each other corrected in their center distance. This is special important for printing processes in which printing cylinders in under different cylinder settings across the web in Are in contact.

For example, when using one with a quick dry ning, water-dilutable printing ink constantly, d. H. also at Druckun Interruptions, colored, preferably with a printing form sleeve piece form cylinder required, the latter from the printing unit  with the transfer cylinder swung down in a cleaning position Help of the running web under a back pressure cylinder which can be quickly cleaned of paint residues and other dirt. It is also with appropriate dimensioning of the movement measure mechanism for the eccentric bushings of the impression cylinder or additional adjustable transfer cylinder possible, different axles changes in status and, if necessary, different material webs to achieve pressures in the printing and cleaning positions.

The sub-claims contain further advantageous refinements of Invention.

The invention is explained in more detail below using exemplary embodiments. In the associated drawings show:

Fig. 1 shows an inventive device for correcting the center distance of the two pressure cylinders in two different cylinder positions to each other

FIG. 2 is an illustration of the pivoting movement of the lever of FIG. 1 with stops

Fig. 3 is an illustration of the arrangement of the stops in the direction X of Fig. 1

Fig. 4 shows a solution variant of Fig. 1 with a lever attached to the eccentric bushing, omitting the toothed segments

Fig. 5 is a reversal of the arrangement of Fig. 1 and 3 with both strikes equipped support element

Fig. 6 shows a separate arrangement of the two stops on the lever and the support element

Fig. 1 shows two printing cylinders 1 ; 2 , depending on the configuration of a printing unit for indirect printing either as a counter pressure cylinder 3 and transfer cylinder 4 or as two transfer cylinders 4 ; 5 act.

The printing cylinder 1 ; 2 are by means of eccentric bushes in two different cylinder positions to each other, namely in a pressure position D₁; D₂ for printing on a web and in a cleaning position R₁; R₂ for cleaning the transfer cylinder 4 or the transfer cylinder 4 ; 5 of color residues and contaminants from the running web, adjustable, which is important for the use of fast-drying, water-thinnable printing inks, since in the event of printing interruptions, the one of the still colored, not shown forme cylinder is pivoted from the printing position D₂ into the printing position A₂ corresponding to the cleaning position R₂ Transfer cylinder 4 can be cleaned quickly from the printing ink. For this purpose, the previously pivoted in a separate printing position A₁ counter-pressure cylinder 3 or second transfer cylinder 5 while the web is running opposite over the medium pressure position D₁ in addition to the cleaning position R₁.

The impression cylinder 3 or transfer cylinder 5 can be adjusted to different web thicknesses by an adjustment process both in the printing position D 1 and the cleaning position R 1 by a corresponding correction of its center distance to the transfer cylinder 4 .

For this purpose, a tooth segment 7 is fastened to the eccentric bushes 6 of this pressure cylinder 1 , into which a toothed segment 9 fastened to a pivotally mounted lever 8 engages.

The lever 8 is offset in the axial direction, in the pivoting direction with respect to the twisting angle α 1 required for the two cylinder positions of the eccentric bushing 6 in relation to one another in terms of their height, 10 ; 11 equipped.

The height of the stops 10 ; 11 corresponding pivot angle α₂ of the lever 8 is by the respective system of the stops 10 ; 11 realized on a support element 12 , which for the protruding into the pivoting range of the lever 8 stop 11 after rotation, the system of the reset other stop 10 enabling free space in the form of a recess 13 according to the dash-dotted line.

Both the lever 8 and the support element 12 are actuated by a pressure medium-operated working cylinder 14 ; 15 pivoted.

In the position shown in FIG. 1 with a stop 11 resting on the support element 12 , the pressure cylinders 1 are located; 2 , the lever 8 and the support element in each case in the pressure position D₁ to D bei and with the abutment 10 in the cleaning position R₁ to R₄.

In addition, the lever 8 can still be pivoted into a special printing position A 1 of the pressure cylinder 1 causing the printing position A 3 .

In order to be able to process different web thicknesses d, the center distance of the printing cylinder 1 ; 2 both in the printing position D₁; D₂ as well as in the cleaning position R₁; R₂ can be changed by adjusting the pressure cylinder 1 in one operation.

For this purpose, the support element 12 is additionally mounted so as to be radially displaceable in the pivoting direction of the lever 8 , the support element 12 being rotatably seated on an eccentric pin 16 of a shaft 19 bearing a worm wheel 17 of a worm drive 18 and supported in the frame according to FIG .

With the radial displacement caused by the worm gear 18 a of the pivot axis of the support member 12 , the pivoting range of the lever 8 by the pivoting angle Δα₂ and the pivoting range of the Exzen terbuchse 6 is shifted by the pivoting angle Δα₁, whereby the Achsab stands the pressure cylinder 1 ; 2 in the printing position D₁; D₂ and the cleaning position R₁; R₂ be corrected in the same direction.

By a symmetrical design of the transmission of Schwenkbewe conditions equal center distance changes for the printing position D₁; D₂ and the cleaning position R₁; R₂ the pressure cylinder 1 ; 2 reached. This is shown in Figure 1 by a right angle between the common point of contact of the stops 10 ; 11 trending normals 20 ; 21 of the swivel circles the support element and the lever or by a right angle between the bisector 22 of the swivel angle α₂ ^I and the normal through the contact points of the stops 20 ^I ( Fig. 2) with largely symmetrical swivel movement in Rich direction of the center of both pressure cylinders 1 ; 2 causes.

Corresponding deviations from the geometry of the transmission elements described allow an asymmetrical movement transmission for the adjustment of the center distance of the printing cylinders 1 ; 2 can be achieved in the two cylinder positions, so that, for example, the contact pressure on the paper web in the cleaning position is greater than the pressure position.

FIG. 3 shows again in the direction X of FIG. 1 the arrangement of the stops 10 offset in the axial direction of the lever 8 ; 11 with the support element 12 .

The adjustment of the pressure cylinder 2 is carried out in a known manner, not shown, by pivoting its eccentric bushes, and their pivoting movement in the pressure position D₂ and the cleaning position R₂ corresponding to the pressure stop A₂ can also be limited by stops.

The design of the stops 10 ; 11 as set screws enables simple basic adjustment of the pressure cylinder 1 .

In the embodiment according to FIG. 4, the tooth segments 7 and 9 have been dispensed with compared to FIG. 1 and the lever 23 is firmly connected to the eccentric bushing 6 ^{I of} the pressure cylinder 1 ^I.

Figs. 5 and 6 compared to FIG 1, other arrangements of the Anschlä ge 10 ^I. 11 ^I ; 10 ^II ; 11 ^II and structurally coordinated lever 8 ^II ; 8 ^III and support elements 12 ^III ; 12 ^IV . In this case 3, both stops 10 are shown in Figure ^I. 11 ^I on the support element 12 ^III offset in its pivoting direction and in Fig. 6 a stop 10 ^II on the lever 8 ^III and a stop 11 ^II on the support element 12 ^IV . In both cases the lever 8 ^II pivots; 8 ^III on the in the swivel range of the lever 8 ^II ; 8 ^{III project} the stop 11 ^I ; 11 ^II when another stop 10 ^I becomes effective; 10 ^II over.

For the sake of a good investment of the stops 10 ^I ; 11 ^I in FIG. 5 is the lever 8 ^II with two contact surfaces 24 arranged at different angles; 25 equipped.

Reference list

1 ; 1 ^I pressure cylinder
2 ; 2 ^I pressure cylinder
3 ; 3 ^I impression cylinder
4 ; 4 ^I transfer cylinder
5 ; 5 ^I transfer cylinder
6 ; 6 ^I eccentric bushing
7 tooth segment
8 ; 8 ^I ; 8 ^II ; 8 ^III lever
9 tooth segment
10 ; 10 ^I ; 10 ^II stop
11 ; 11 ^I ; 11 ^II
12 ; 12 ^I ; 12 ^II ; 12 ^III ; 12 ^IV support element
13 ; 13 ^I recess
14 ; 14 ^I working cylinder
15 working cylinders
16 eccentric pins
17 worm wheel
18 worm drive
19 wave
20 ; 20 ^I normal
21 ; 21 ^I normal
22 bisector
23 levers
24 contact surface
25 contact surface
D₁; D₁ ^I pressure position
D₂; D₂ ^I pressure position
D₃; D₃ ^I pressure position
D₄ pressure position
A₁; A₁ ^I print stop
A₂; A₂ ^I print shutdown
A₃; A₃ ^I print shutdown
R₁; R₁ ^I cleaning position
R₂; R₂ ^I cleaning position
R₃; R₃ ^I cleaning position
a radial displacement
d; d ^I web thickness
α₁; α₁ ^I swivel angle
α₂; α₂ ^I ; α₂ ^II ; α₂ ^III swivel angle
Δα₁ swivel angle
Δα₂; Δα₂ ^I swivel angle

Claims (15)

1. Cylinder adjusting device for two printing cylinders of a rotary printing machine, the printing cylinders being generally known in eccentric bushings limited by stops in the pivoting movement and being axially spaced, characterized in that there is a pivotally connected lever with the respective eccentric bushing ( 6 ; 6 ^I ) ( 8 to 8 ^III ; 23 ) each via one of two for two different cylinder positions between the two pressure cylinders ( 1 ; 1 ^I ; 2 ; 2 ^I ) depending on the pivotal movement of the eccentric bushings ( 6 ; 6 ^I ) to be realized of a Druckzy cylinder ( 1 ; 1 ^I ) height-graded stops ( 10 ; 10 ^I ; 10 ^II ; 11 ; 11 ^I ; 11 ^II ) against a pivotable, radially displaceable support element ( 12 to 12 ^IV ) under different pivot positions of the lever ( 8 to 8 ^III ; 23 ) and the support element ( 12 to 12 ^IV ) in the two cylinder supports, both stops ( 10 ; 1 1 ) on the lever ( 8 ; 8 ^I ; 23 ) are arranged and the stop ( 11 ) projecting into the pivoting range of the lever ( 8 ; 8 ^I ; 23 ) in the active position after the support element ( 12 ; 12 ^I ; 12 ^II ) and the lever ( 8 ; 8 ^I ; 23 ) engages in the active position of the other stop ( 10 ) in a recess ( 13 ; 13 ^I ) of the support element ( 12 ; 12 ^II ). 2. Cylinder adjustment for two printing cylinders of a rotary printing press, the printing cylinders being generally known in axially spaced adjustable eccentric bushings limited by stops in the pivoting movement, characterized in that there is a positive connection with the respective eccentric bushing ( 6 ; 6 ^I ), pivotable lever ( 8 to 8 ^III ; 23 ) each over one of two for two different cylinder positions between the two Druckzy alleviate ( 1 ; 1 ^I ; 2 ; 2 ^I ) depending on the pivoting movement of the eccentric bushings ( 6 ; 6 ^I ) a pressure cylinder ( 1 ; 1 ^I ) height-graduated stops ( 10 ; 10 ^I ; 10 ^II ; 11 ; 11 ^I ; 11 ^II ) against a pivotable, radially displaceable support element ( 12 to 12 ^IV ) under different pivot positions of the lever ( 8 to 8 ^III ; 23 ) and the support element ( 12 to 12 ^IV ) in the two cylinder positions, both stops ( 10 ^I ; 11 ^I ) are arranged on the support element ( 12 ^III ) and the stop ( 11 ^I ) projecting into the pivoting range of the lever ( 8 ^II ) in the active position after pivoting the support element ( 12 ^III ) and the lever ( 8 ^II ) in the active position of the other Stop ( 10 ^I ) is arranged outside the pivoting range of the lever ( 8 ^II ). 3. Cylinder adjusting device for two printing cylinders of a rotary printing machine, the printing cylinders being generally known in axially spaced positionally adjustable eccentric bushings limited by stops in the pivoting movement, characterized in that there is a positively connected connection with the respective eccentric bushing ( 6 ; 6 ^I ), pivotable lever ( 8 to 8 ^{I II} ; 23 ) each via one of two for two different cylinder positions between the two pressure cylinders ( 1 ; 1 ^I ; 2 ; 2 ^I ) depending on the pivoting movement of the eccentric bushes ( 6 ; 6 ^I ) to be realized Pressure cylinder ( 1 ; 1 ^I ) height-graded stops ( 10 ; 10 ^I ; 10 ^II ; 11 ; 11 ^I ; 11 ^II ) against a pivotable, radially displaceable support element ( 12 to 12 ^IV ) under different pivot positions of the lever ( 8 to 8 ^III ; 23 ) and the support element ( 12 to 12 ^IV ) in the two cylinder positions, with a stop ( 10 ^II ) au FDEM lever (8 ^III) and a stop (11 ^II) aufdem supporting element (12 ^IV) and aufdem in an arrangement of the above in the operative position into the swivel area of the lever (8 ^III) stop (11 ^II) support element (12 ^IV) this stop ( 11 ^II ) after pivoting the support element ( 12 ^IV ) and the lever ( 8 ^III ) in the operative position of the other stop ( 10 ^II ) is arranged outside the pivoting range of the lever ( 8 ^III ) and with an arrangement of the above Stop on the lever, this stop engages in a recess of the support element. 4. Device according to one of claims 1 to 3, characterized in that the support element ( 12 to 12 ^IV ) is pivotally arranged on an eccentric part rotatably mounted in the frame. 5. Apparatus according to claim 4, characterized in that the support element ( 12 to 12 ^IV ) is rotatably seated on an eccentric pin ( 16 ) of a shaft ( 19 ) mounted in the frame and carrying a drive pinion. 6. The device according to claim 5, characterized in that the drive pinion is designed as a worm wheel ( 17 ) of a worm gear ( 18 ). 7. Device according to one of claims 1 to 3 and claims 4 to 6, characterized in that on the support element ( 12 to 12 ^IV ) is an articulated in its pivoting direction, pressure-operated cylinder ( 15 ) is articulated. 8. Device according to one of claims 1 to 3 and claims 4 to 7, characterized in that the lever ( 8 to 8 ^III ) is pivotally mounted in the frame and with one in a on the eccentric bushing ( 6 ) of the pressure cylinder ( 1 ) fixed tooth segment ( 7 ) engaging tooth segment ( 9 ) is equipped. 9. Device according to one of claims 1 to 3 and claims 4 to 7, characterized in that the lever ( 23 ) on the eccentric bushing ( 6 ^I ) of the pressure cylinder ( 1 ^I ) is attached. 10. Device according to one of claims 1 to 3 and claims 4 to 9, characterized in that on the lever ( 8 to 8 ^III ; 23 ) is an articulated in its pivoting direction, pressure-operated Arbeitszy cylinder ( 14 ; 14 ^I ) is articulated. 11. Device according to one of claims 1 to 3 and claims 4 to 10, characterized in that the stops ( 10 to 10 ^II ; 11 ; 11 ^II ) for separate adjustment of the cylinder settings separately in the pivoting direction of the lever ( 8 to 8 ^III ; 23 ) are adjustable. 12. Device according to one of claims 1 to 3 and claims 4 to 11, characterized in that the one cylinder position, the pressure positions (D₁; D₁¹; D₂; D₂ ^I ) of a counter-pressure cylinder ( 3 ; 3 ^I ) and one working together with it Transfer cylinder ( 4 ; 4 ^I ) or two cooperating transfer cylinders ( 4 ; 4 ^I ; 5 ; 5 ^I ) and the other cylinder position, the cleaning positions (R₁; R₁ ^I ; R₂; R₂ ^I ) of the printing cylinders ( 1 ; 1 ^I ; 2 ; 2 ^I ) for cleaning the respective transfer cylinder ( 4 ; 4 ^I ; 5 ; 5 ^I ) through the web and the adjustable to the web thickness (d; d ^I ) pressure cylinder ( 1 ; 1 ^I ) opposite to the cleaning position (R₁; R₁ ^I ) beyond the middle pressure position (D₁; D₁ ^I ) additionally has a pressure stop (A₁; A₁¹). 13. Device according to one of claims 1 to 3 and claims 4 to 12, characterized in that the points of contact of the attachments ( 10 ; 10 ^I ; 10 ^II ; 11 ; 11 ^I ; 11 ^II ) with the support element ( 12 to 12 ^IV ) lie on the same swivel radius of the lever ( 8 to 8 ^III ; 23 ). 14. The apparatus according to claim 13, characterized in that the normals ( 21 ; 20 ) of the pivoting circles of the lever ( 8 ) and Ab Stützele element ( 12 ) in the contact points of the stops ( 10 ; 11 ) an equal change in the center distance of the pressure cylinder ( 1 ; 2nd ) causing a right angle in both cylinder positions or a different change in the center distance of the pressure cylinders ( 1 ; 2 ) causing an angle deviating from the right angle in both cylinder positions. 15. The apparatus according to claim 13, characterized in that the bisector ( 22 ) of the pivot angle (α₂ ^I ) of the lever ( 8 ^I ) to the normal ( 20 ^I ) of the pivoting circle of the support element ( 12 ^I ) in the contact points of the stops ( 10 ; 11 ) an equal axis distance change of the pressure cylinder ( 1 ; 2 ) in both cylinder positions causing a right angle or a different axis distance change of the pressure cylinder ( 1 ; 2 ) in both cylinder positions causing an angle deviating from the right angle.