Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F31/00—Inking arrangements or devices
  • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
  • B41F31/301—Devices for tripping and adjusting form rollers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
  • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
  • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
  • B41F13/34—Cylinder lifting or adjusting devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
  • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
  • B41F13/34—Cylinder lifting or adjusting devices
  • B41F13/36—Cams, eccentrics, wedges, or the like
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/08—Cylinders
  • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
  • B41F13/34—Cylinder lifting or adjusting devices
  • B41F13/40—Cylinder lifting or adjusting devices fluid-pressure operated
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F31/00—Inking arrangements or devices
  • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
  • B41F31/32—Lifting or adjusting devices
  • B41F31/36—Lifting or adjusting devices fluid-pressure operated
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F7/00—Rotary lithographic machines
  • B41F7/20—Details
  • B41F7/24—Damping devices
  • B41F7/40—Devices for tripping or lifting damping rollers; Supporting, adjusting, or removing arrangements therefor

Definitions

• the invention relates to methods and devices for adjusting a contact pressure exerted by at least one roller on another roller in a printing press and / or for turning on / off at or of at least one of these rollers according to the preamble of claim 1, 2, 9, 10 , 11 or 16.
• Inking units or dampening units in printing presses are used to convey the ink or dampening solution required for the printing process from appropriate supply facilities into the printing zone.
• Rollers or cylinders are provided in the inking unit or dampening unit to form the ink film or dampening solution film required.
• the terms roller and cylinder have an equivalent meaning for the understanding of the present invention.
• the rollers come into contact with one another in so-called roller strips, so that the ink film or dampening solution film in the roller strips can be transferred from one roller to another roller.
• rollers with adjustable bearings are provided in the machine frame, so that by adjusting these rollers with adjustable bearings relative to the other rollers, the contact pressure in the roller strips can be changed.
• EP 08 26 501 A1 discloses an inking unit with a friction roller mounted on the frame and a form cylinder mounted on the frame, the ink being transferred from the friction roller to the form cylinder by an application roller arranged between the friction roller and the form cylinder.
• the applicator roller itself is adjustable in the machine frame and can be pressed into the gap between the friction roller and the forme cylinder with a variable force.
• the device for storage the application roller is designed such that the force with which the application roller is pressed into the gap between the forme cylinder and the friction roller always acts along a bisector between the friction roller and the forme cylinder. In other words, this means that although the magnitude of the force for pressing the application roller can be changed, the direction of the force is unchangeably predetermined by the design of the adjusting device.
• the contact pressure in the roller strips between the forme cylinder and the friction roller on the one hand and the applicator roller on the other hand only the size of the contact pressure can be changed, the resulting contact pressures in the roller strips resulting from the given geometry.
• a device for clamping bearing bushes for printing and form cylinder bearings of a printing press comprising a hydraulic pressing of the bearing bushes against the bore wall of the machine frame, the bearing bushes consisting of two bush sleeves shrunk onto one another, whereby in the The inner wall of the outer sleeve has two hydraulically actuated pressure chambers, both of which are below 120 ° to the result of the mean forces acting on the bearing.
• the concentricity of the cylinders is improved, because by eliminating the play that the bearing bushes have in the bore of the machine frame that accommodates them, a largely vibration-free running of the cylinders is achieved.
• the patent DE 15 61 014 C1 shows a roller bearing adjustable in only one direction, in particular for friction and application rollers of inking units on printing presses, adjustment means for adjusting the roller being provided transversely to its axis, the adjustment means being located between a bearing journal connected to the frame wall and a roller end receiving, preferably cup-shaped housing are attached, the bearing pin and the Housing are connected together by the adjusting means counteracting spring elements.
• the spring elements are preferably designed as radial rubber buffers and the adjusting means acting on the bearing journal either as a radially arranged adjusting screw or as two adjusting screws arranged at 45 °.
• the turning on or turning off of the roller and thus the adjustment of the roller bearing can also take place through two diametrically arranged pressure chambers which can be acted upon by air or a liquid, the pressure chambers acting counter to one another being pressurized depending on the desired direction of action.
• DE 100 01 582 A1 discloses a device for adjusting the contact pressure between rollers in a printing press, hydraulic adjusting elements, preferably designed as double-piston cylinders, being arranged between adjacent rollers.
• the invention has for its object to provide methods and devices for adjusting a contact pressure exerted by at least one roller on another roller in a printing press and / or for turning on / off at or of at least one of these rollers.
• the advantages that can be achieved with the invention are, in particular, that when the contact pressure is set between the adjustable roller and the rollers lying against it, not only the force magnitude is varied, but also the direction of force. This means that the contact pressures in the two roller strips can ultimately be set independently of one another. Special advantages with regard to the downtimes when setting the inking unit or dampening unit result if the press-in pressure in the roller strips is not set step by step, but essentially simultaneously. When adjusting the force with which the adjustable roller is pressed against the other rollers, this means that the force magnitude and the force direction can be varied until the desired contact pressures result in all roller strips.
• the position of the adjustable roller is fixed after actuation of the contact pressure relative to the other two rollers by actuating a fixing device.
• the size and direction of the force for adjusting the adjustably mounted roller can essentially be chosen freely, this can also be used for switching off the ink or the dampening solution.
• the force for adjusting the adjustable roller is selected in a direction that points away from the other two rollers. As a result, the adjustable roller can be moved out of the gap until there is no longer any contact between the adjustable roller and the other rollers. As soon as the adjustable roller is separated from the other rollers, no dampening solution or ink is then transferred into the roller strip.
• the adjustably mounted roller can also be arranged on a lever mechanism which can be pivoted about the axis of rotation of one of the other rollers.
• the roller can then be lifted off one of the other rollers by driving the lever mechanism.
• the adjustable roller can be pressed into the gap between the other two rollers with a force that is adjustable in size and direction after moving to the functional position of the lever mechanism, in which the adjustable roller comes to rest on the other two rollers.
• This setting is then fixed by actuating a fixing device between the adjustable roller and the lever mechanism.
• the lever mechanism is pivoted into the first functional position, in which the adjustable roller is lifted from the one roller.
• the ink or dampening solution is turned on, swiveling the lever mechanism back into the second functional position without additional adjustment of the contact pressures is sufficient, since the correct setting is fixed by the fixing device between the lever mechanism and an adjustable roller.
• Figure 1 is a schematically illustrated device for adjusting the contact pressure between two rollers in longitudinal section.
• FIG. 2 shows the device shown schematically in cross section according to FIG. 1 in a basic position
• FIG. 3 shows the device shown schematically in cross section according to FIG. 1 in a deflected position
• FIG. 4 shows the device according to FIG. 1 in a perspective view without roller holder
• FIG. 5 shows the device according to FIG. 1 in a perspective view with roller holder
• FIG. 6 shows a section of an inking unit in a schematically represented side view
• 7 shows a second exemplary embodiment of an inking unit in a schematically illustrated side view
• FIG. 8 shows a section of the inking unit according to FIG. 7 in a schematically represented side view with a roller set against two rollers and an associated diagram of the force vectors;
• FIG. 12 shows a third exemplary embodiment of a roller arrangement with two rollers that can be adjusted and engaged independently against a third roller;
• Fig. 13 shows a fourth embodiment of an inking unit in a schematically illustrated side view.
• FIG. 1 shows a device 20 for adjusting the contact pressure between a first roller 21 and a second roller 22.
• the roller 21 can be detachably fastened with the ends of its axis 23 to a quick fastener 24 provided on the device 20.
• Such quick fasteners are known from the prior art and have a semicircular bearing shell, into which the ends of the axis 23 can be inserted. By attaching an upper, not shown in Fig. 1 Bearing shell then the axis 23 can be fixed on the quick release 24.
• the device 20 is essentially constructed from a frame holder 26 and a roller holder 27, which can be displaced relative to one another in a positioning plane that extends perpendicular to the plane of the drawing.
• the frame holder 26 is constructed from a base plate 28, which can be pivotably attached to the frame of a printing press, for example by means of a swivel arm, and a sleeve body 29.
• the sleeve body 29 On the side facing the roller 21, the sleeve body 29 has a recess 31 into which a cylindrical section 32 of the roller holder 27 engages.
• the inside diameter of the recess 31 or the outside diameter of the section 32 is selected such that a circularly cylindrical gap 33 with a gap width of, for example, 1 mm to 10 mm, preferably 2 mm, is formed in the basic position.
• the maximum adjustment range for adjusting the roller holder 27 relative to the frame holder 26 is defined by the gap 33.
• Actuators 34 designed in the manner of pressure hoses 34, of which only two are shown in section in FIG. 1, are arranged.
• the pressure chambers 36 formed by the wall of the actuators 34 can be pressurized via feed lines 48 (not shown in FIG. 4).
• feed lines 48 not shown in FIG. 4
• a resultant force acts on the roller holder 27, so that by appropriately controlling the pressure in the actuators 34, the roller 21 can be pressed against the roller 22 with the desired contact pressure.
• lamella elements 37 are fastened to the roller holder 27 and are arranged in a meshing manner with lamella elements 38 fastened to the sleeve body 29 to form a lamella package.
• lamella elements 37; 38 formed plate pack a cross-sectionally T-shaped punch 39 is provided, the circular punch head 40 with an annular flange 41 comes to rest on the outermost plate element 37 or 38 of the plate pack.
• a pressure plate 42 is fastened, on which the spring force of a spring element 43 designed in the manner of a plate spring assembly 43 acts.
• the spring element 43 is preloaded between the pressure plate 42 and the sleeve body 29, so that that of the lamella elements 37; 38 plate pack formed by the spring force which from the punch 39 to the plate elements 37; 38 is transmitted, is stuck.
• a pressure connection 44 is provided in the base plate 28, through which a pressure chamber 46 between the pressure plate 42 and the base plate 28 can be acted upon by a pressure medium, for example compressed air.
• a pressure medium for example compressed air.
• the contact pressure between the rollers 21 and 22 is set, for example, in the following manner.
• the fixing device which is preferably designed to be frictionally engaged, can alternatively or additionally also have elements which engage in a form-fitting manner.
• FIG. 2 and FIG. 3 schematically illustrate the principle of operation of the device 20 when the actuating movement is required.
• FIG. 2 shows the frame holder 26 with the recess 31 and the portion 32 of the roller holder 27 engaging therein.
• the dimensions are used to form a gap 33 between the frame holder 26 and the portion 32 of the roller holder 27, in which the gap shown in FIG. 2 and 3 are arranged only schematically by actuators 34 indicated by force arrows.
• the possible positioning movements between the frame holder 26 and the roller holder 27 are defined by a setting plane which extends in the drawing plane in the illustration of FIGS. 2 and 3, the setting range of the positioning movements being limited by the width of the gap 33.
• the roller holder 27 and, as a result, the roller 21 attached to it can be laterally displaced relative to the frame holder 26, which is brought about by a corresponding actuation of the actuators 34 and the consequent force effect on the section 32.
• the desired position of the Roll holder 27 is found relative to the frame holder 26, the of the lamella elements 37; 38 or the stamp 39 and the pressure plate 42 formed fixing device are actuated so that the position is permanently fixed and the actuators 34 do not have to be driven any further.
• FIG. 4 shows the device 20 without a roller holder 27 in a perspective view.
• the sleeve body 29 is fastened to the roller holder 27 (see FIG. 5) by means of four fastening screws 47.
• the four z. B. arranged in the manner of pressure hoses 34 actuators 34 which can be acted upon via lines 48 with compressed air.
• FIG. 5 shows the device 20 with the base plate 28, the frame holder 26, the roller holder 27, the quick-release fastener 24, the fastening screws 47 and the actuators 34 in a perspective view from the front.
• FIG. 6 shows the detail from an inking unit 51 with an adjustable roller 52 and two rollers 53 fixed to the frame; 54 shown.
• the adjustable roller 52 is mounted with a device 20 in the machine frame, as was explained in FIGS. 1 to 5. This is indicated schematically in FIG. 6 by the air chambers 56 to 59 and 61.
• the function of the pressure chambers 56 to 59 corresponds to the function of the pressure chambers 36 on the device 20. That is, by venting or venting the pressure chambers 56 to 59, the adjustably mounted roller 52 can be pressed into or out of the gap between the rollers 53 and 54 the gap be brought out.
• the function of the pressure chamber 61 corresponds to the function of the pressure chamber 46 on the device 20, so that the adjustable roller 52 can be fixed in its position relative to the rollers 53 and 54 fixed to the frame by venting or venting the pressure chamber 61.
• an air pressure is applied in the pressure chambers 56 and 57, which acts as a result of an adjusting force on the roller 52 in the desired size and direction.
• the pressure chamber 61 is then filled with compressed air in order to release the fixing of the roller 52.
• the roller 52 is then pressed against the rollers 53 and 54 under the contact pressure applied by the pressure chambers 57 and 56.
• the contact pressure in the roller strips 62 and 63 can be variably set independently of one another.
• the pressure chamber 61 is vented by releasing the pressure, and the adjustable roller 52 is thereby fixed relative to the rollers 53 and 54.
• the contact pressure in the roller strips 62; 63 can be changed remotely.
• the readjustment of the roller strips 62; 63 is also possible during production because the color transfer is not interrupted.
• only the pressure chamber 61 is ventilated to release the fixing device and the pressure in the pressure chambers 56; 57 changed until the desired contact pressures on the roller strips 62; 63 result.
• the pressure chambers 56 and 57 are vented and the pressure chambers 58 and 59 are vented.
• the roller 52 is moved out of the gap between the rollers 53 and 54. If there is no longer any contact between the roller 52 and the rollers 53 or 54, the pressure chamber 61 is ventilated again and the roller 52 is thereby fixed in the parked position. As a result, it becomes possible to shut down the roller 52 even while production is running without removing the roller 52.
• the roller 52 can also be switched off in the manner described before the contact pressures are set by venting the pressure chambers 56 and 57.
• Fig. 7 shows an inking unit 66, with the printing ink from a roller 67, for. B. anilox roller 67 on a cylinder 68, for. B. a forme cylinder 68 is transferable.
• an upper roller train 69 with two rollers 71; 72, e.g. B. two ink transfer rollers 71; 72 and a roller 73, e.g. B. an inking roller 73 and a lower roller 74 with two rollers 76 and 77, z. B. two Ink transfer rollers 76 and 77 and an inking roller 78 are provided.
• the ink transfer rollers 71; 72; 76; 77 and the inking rollers 73; 78 are adjustably mounted in a frame 79.
• the contact pressures in the roller strips of the upper roller train 69 and the lower roller train 74 are set in succession. I.e. First the fixation of the inking roller 73 is released and the contact pressure in the roller strips to the anilox roller 67 and to the forme cylinder 68 is set by ventilation of the corresponding pressure chambers. At the same time, the contact pressure between the inking roller 78 of the lower roller 74 and the anilox roller 67 or the forme cylinder 68 can be set.
• the inking rollers 73 and 78 After the inking rollers 73 and 78 have been set, they are fixed and then the contact pressure between the inking roller 72 and the inking roller 73 and the inking roller 77 and the inking roller 78 is adjusted by venting the corresponding pressure chambers. As soon as the ink transfer rollers 72 and 77 are fixed again, the ink transfer rollers 72 and 76 are finally adjusted by ventilating the pressure chambers, so that the roller strips between the ink transfer rollers 71 and 76 on the one hand and the anilox roller 67 or the ink transfer rollers 72 and 77 on the other hand result in the desired contact pressures. If the ink transfer rollers 71 and 76 are also fixed again, the entire inking unit 66 is completely set.
• the equipment outlay for implementation becomes considerable reduced because to adjust the individual rollers 71; 72; 76; 77, 73; 78 the same adjustment devices can be used.
• rollers 71; 72; 76; 77, 73; 78 successively ensures that the setting of the rollers 71; 72; 76; 77, 73; 78 do not influence each other.
• the adjustment of the individual rollers 71; 72; 76; 77, 73; 78 a relatively long response time in succession.
• the ink transfer rollers 71; 72; 76; 77 or the inking rollers 73; 78 all set at the same time. I.e. the pressure chambers on the individual ink transfer rollers 71; 72; 76; 77 or inking rollers 73; 78 are all subjected to suitable air pressures at the same time.
• FIG. 8 Such an addition of the force vectors for the ink transfer roller 71 is shown in FIG. 8.
• the ink transfer roller 71 act in addition to the z. B. formed by the weight force force vector 80, the force vector 81 and 82, the z. B. correspond to the pressing forces acting in the roller strips 81 and 82, which result at predetermined contact pressures of the ink transfer roller 71 to the anilox roller 67 and to the ink transfer roller 72.
• the weight 80 and the Adding pressure forces 81 and 82 vectorially there is a force difference that must be absorbed by adjusting the air pressure in the air chambers 83 and 84 such that the resultant external force no longer acts on the ink transfer roller 71.
• the force vector 86 e.g.
• This method assumes that at the beginning of the process sequence at least some of the forces 81; 82 do not yet appear real, but are the desired values because at least the contact forces 81; 82 only by the proposed method to a desired one Value to be set.
• the resultant 88 formed as a vector sum is thus a setpoint value to which radial forces 89; 91 can be set in vectorial addition.
• a method is obtained in an analogous manner, which is characterized in that a resultant 88 is a vector sum of all the forces 80; 81; 82 is formed that at least one actuator 83; 84 is actuated by a control signal, the radial force 89; 91 counteracts the resultant 88 and that the radial force 89; 91 of the actuated actuator 83; 84 to an amount 86; 92 is set, which corresponds to the vector sum
• the weight 80 of the first roller 71 is preferably included in the vector sum to form the resultant 88, because its contribution to the vector sum is generally not negligible. If only the weight 80 of the first roller 71 forms the resultant 88 because z. B. no contact forces act on the first roller 71, the radial force 91; 97 of the actuators 83; 94 at least temporarily to an amount 86; 98 is set such that its vector sum is greater in magnitude than the resultant 88 during the parking.
• This method step serves for the parking of the first roller 71, ie for the application of a force which causes the first roller 71 to move.
• the actuators 83; 84; 93; 94 the roller holder 27 in the frame holder 26, the Actuators 83; 84; 93; 94 the center of the roll holder 27 z. B. can move up to 15 mm eccentrically from the center of the frame age 26.
• the roller holder 27 can be displaceably eccentrically in the frame holder 26 in such a way that the first roller 71 and the second roller 72 become out of contact, this displacement being effected by the actuation of only a single actuator 83; 84; 93; 94 can be caused, which is arranged between the roller holder 27 and the frame holder 26.
• At least one spring element can be provided between the roller holder 27 and the frame holder 26, against which the actuators 83; 84; 93; 94 move the roller holder 27 in the frame holder 26 and which the roller holder 27 in the by the actuators 83; 84; 93; 94 returns the unloaded operating state to a starting position.
• roller holder 27 in the frame holder 26 z. B. is fixed in the manner described in connection with FIG. 1 after the vector sum has been reduced to the amount 86; 92; 98 set radial forces 89; 91; 97 corresponds to the resultant 88.
• the radial forces 89; 91 of the actuators 83; 84 an opening angle ⁇ with each other.
• the radial forces 89; 91 the force amounts 86; Apply 92, which are equal in vectorial addition to the resultant 88.
• the opening angle ⁇ between the radial forces 89; 91 by the actuators 83; 84 after its actuation, d. H. after being acted upon by a pressure medium, is also found between the radial forces 89; 91 rectified force vectors 86; 92.
• the actuators 83; 84 result in the diagram of the force vectors 86; 88; 92 between the resultant 88 and the force vectors 86;
• Other advantageous settings for the opening angle ⁇ can be between 45 ° and 135 °, in particular 90 ° and also 120 °.
• the opening angle ⁇ which the radial forces 89; 91 of the actuated actuators 83; 84 form with each other, in many roller arrangements is not equal to an opening angle ß, which the contact pressure 82 exerted by the first roller 71 on the second roller 72 forms with the contact pressure 81 exerted by the first roller 71 on the third roller 67
• the opening angle ß z , B. is between 30 ° and 180 °, but is preferably between 60 ° and 120 °, in particular at about 90 °.
• the actuators 83; 84; 93; 94 are formed in or on a wall of the frame holder 27, preferably as side-limited pressure chambers (cf. execute directed radial stroke, the z. B. can be up to 10 mm.
• the frame holder 26 has connections for supply lines for pressure medium supply for the hollow bodies or pressure chambers (FIGS. 4 and 5). At least the frame holder 26 is advantageously designed to be rotationally symmetrical, because then no special alignment with a frame wall 79 (FIG. 7) has to be taken into account during its assembly.
• the pressure chambers can have a membrane, wherein at least one web is formed on the frame holder 27 between the pressure chambers (FIG. 4), with which the membrane can be connected.
• a self-contained annular membrane covers all pressure chambers or an associated membrane is provided for each pressure chamber. The latter embodiment is shown in FIG. 4.
• the membrane is preferably inserted, glued or clamped into a groove made in the frame holder 27.
• three or four actuators 83; 84; 93; 94 or pressure chambers can be provided, which are preferably arranged equidistantly along the circumference of the roller holder 27.
• FIG. 9 shows an arrangement similar to FIG. 8, but with the difference that here two rollers 67; 71 are employed against each other.
• a corresponding diagram of the force vectors 80; 81; 86; 88; 92 is shown, according to which the actuators 83; 84 the required forces 86; Apply 92. 10
• the roller 71 is separated from its adjacent rollers 67; 72 completely turned off.
• an associated diagram of the force vectors 80 illustrates; 86; 98 the effective force relationships, according to which to achieve this operating state for the roller arrangement, the actuators 83; 94 are to be operated.
• FIG. 11 shows a section of the inking unit with one against two rollers 67; 72 employed roller 71 and a representation of the radial forces 89; 91; 96; 97 of the actuators 83; 84; 93; 94.
• the contact forces 81; 82 apply and to compensate for the weight force 80 acting on the roller 71 employed.
• the roller 71 can be moved in any direction in the position plane, which here is the same as the plane of the drawing.
• Some devices 20 for setting a contact pressure 82 exerted by a first roller 71 at least on a second roller 72 in a printing press and / or for / Placing a first roller 71 on or of at least a second roller 72 may not like all of these actuators 83; 84; 93; 94 need, but only at least two actuators 83; 84, which in its actuated, ie pressurized operating state, a radial force directed into the first roller 71 89; 91 exercise because in the opposite direction of the radial force 89; 91 z.
• a preferably biased spring element is provided.
• FIG. 12 A third exemplary embodiment of a roller arrangement is shown in FIG. 12. It relates to a device 20 for setting a contact pressure 81; 82, which exert a first roller 71 and a second roller 72 on at least a third roller 67 in a printing press, and / or for turning a first roller 71 and at least one second roller 72 on and off a third roller 67, wherein for the first roller 71 and the second roller 72 actuators 83; 84; 93; 94 are provided which, in their actuated operating state, have a radial force 89; 91; 96; 97 exercise, each in the roller 71; 72 is directed.
• This device 20 is characterized in that an opening angle ⁇ 1; ⁇ 2 between the actuators 83; 84 on the same roller 71; 72 directed radial forces 89; 91 is the same for the first roller 71 and the second roller 72.
• the radial forces 89; 91; 96; 97 of the actuators 83; 84; 93; 94 each have an opening angle ⁇ 1; ⁇ 2 with each other, which is not equal to an opening angle ⁇ , which the contact pressure 82 exerted by the first roller 71 on the third roller 67 forms with the contact pressure 81 exerted on the third roller 67 by the second roller 72.
• the actuators 83; 84; 93; 94 their radial force 89; 91; 96; 97 actuated by a control signal ie the actuators 83; 84; 93; 94 are e.g. B. actuated by a control station assigned to the printing press.
• the opening angle ⁇ ; ⁇ 1; ⁇ 2, the radial forces 89; 91 of the actuated actuators 83; 84 form with each other, z. B. between 45 ° and 135 °, preferably between 90 ° and 120 °.
• the first roller 71 and / or the second roller 72 can each be held in a roller holder 27, which in turn is mounted in a frame holder 26, the actuators 83; 84; 93; 94 are preferably arranged between the frame holder 26 and the roller holder 27.
• the frame holder 26 is advantageously designed as a housing in which the actuators 83; 84; 93; 94 are arranged (cf. FIG. 4 or 5), the housing being at least half-shelled. Again, it is recommended that the actuators 83; 84; 93; 94 form as a pressurizable hollow body, the z. B.
• the first roller 71 or the second roller 72 can be a roller of an inking unit or a dampening unit.
• the inking unit 01 shown in FIG. 13 is used to apply printing ink to a cylinder 02, e.g. B. a forme cylinder 02, which in turn transfers the printing ink to a blanket cylinder 03.
• a dampening unit 06 with a spray device 07 and various rollers 08a; 08b; 08c; 08d, e.g. B. dampening rollers 08a; 08b; 08c; 08d provided.
• a certain amount of a pasty printing ink 10 is stored in a reservoir 09 designed as an ink fountain 09.
• the printing ink 10 can be used in a suitable manner be promoted.
• a color film of a certain thickness is applied by the ink ductor 11 to a downstream roller 13, e.g. B. film roller 13 transferred.
• the printing ink 10 is then on two rollers 18; 19, e.g. B. two inking rollers 18; 19 transferred.
• the forme cylinder 02, the inking rollers 16; 17, the film roller 13 and the ink duct 11 are all mounted in a machine frame, not shown in FIG. 13.
• the inking rollers 16; 17 can of course be moved relative to the machine frame in the axial direction in order to rub the ink on the adjacent ink transfer rollers 14 or 15 and ink application rollers 18 or 19.
• the “fixed” rolls are therefore not changeable with respect to the center distance.
• the ink transfer rollers 14 and 15 and ink application rollers 18 and 19 are each mounted with two devices 20 on the opposite sides of the machine frame, so that between the rollers 16; 17; 13 or the cylinder 02 in the roller train of the inking unit 01, by actuating these devices 20, an adjustment of the ink transfer rollers 14 or 15 and ink application rollers 18 or 19 is possible.
• the contact pressure in the roller strips between the ink transfer rollers 14 and 15 and ink application rollers 18 and 19 on the one hand and the forme cylinder 02, the inking rollers 16; 17 and the film roller 13 and the ink ductor 11 on the other hand can be set one after the other.
• the inking unit 01 can be set particularly quickly by simultaneously adjusting the contact pressure in the roller strips everywhere.
• the dampening rollers 08a and 08c which are adjustably mounted with devices 20, are arranged between the dampening rollers 08b and 08d, which are fixed to the frame, and the forme cylinder 02, which are fixed to the frame.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Inking, Control Or Cleaning Of Printing Machines (AREA)
• Rotary Presses (AREA)
• Printing Plates And Materials Therefor (AREA)
• Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
• Output Control And Ontrol Of Special Type Engine (AREA)
• Rolls And Other Rotary Bodies (AREA)
• Printing Methods (AREA)
• Delivering By Means Of Belts And Rollers (AREA)
• Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
• Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7708315

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Family Applications After (1)

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• 2002
  • 2002-09-21 DE DE10244043A patent/DE10244043B4/de not_active Expired - Fee Related
  • 2002-09-21 AT AT02804557T patent/ATE342801T1/de active
  • 2002-09-21 DE DE50213302T patent/DE50213302D1/de not_active Expired - Lifetime
  • 2002-09-21 DE DE10244044A patent/DE10244044B4/de not_active Expired - Fee Related
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