Classifications

• • 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
  • B41F13/26—Arrangement of cylinder bearings
• • 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

Definitions

• the present invention relates to a printing press with a printing unit, which has at least one roller and a counter-pressure cylinder, wherein the roller is rotatably mounted on opposite sides by means of two bearings on a frame and wherein an adjustment for adjusting the position of the roller is provided relative to the impression cylinder.
• the invention further relates to a method for adjusting the position of the printing unit of a printing press, wherein at least one roller of the printing unit is aligned by adjusting the bearings on opposite sides of the roller substantially parallel to a counter-pressure cylinder of the printing unit.
• the rollers involved in the printing of the printing unit must be adjusted to each other.
• the impression cylinder is often taken, which offers itself especially in central cylinder machines with multiple printing units.
• the rollers of the individual printing units are adjusted, so that all roller axes are aligned parallel to each other, in order to ultimately obtain a high-quality printed image.
• rollers are regularly on their two sides in the respective
• the present invention has the object, an improved printing machine of the type mentioned above and an improved method for adjusting the position of the printing of a
• a shortened assembly time for the position adjustment of the printing unit rollers should be achieved.
• this object is achieved by a printing press according to claim 1.
• the stated object is achieved by a method according to claim 13.
• Preferred embodiments of the invention are the subject of the dependent claims.
• the adjusting device of the printing machine has separate position adjusting means for each of the two bearings of the at least one printing unit roller, by means of which the position of the bearings relative to each other and relative to the frame on which the printing unit roller is mounted, in at least one direction are adjustable transversely to the impression cylinder longitudinal direction.
• the first bearing side is angularly adjusted in a first step such that the bearing is aligned with its axis of rotation as parallel as possible to the impression cylinder longitudinal axis, then in a second step, the second bearing side is adjusted in height such that the bearing on the second Bearing side together with the bearing on the first bearing side forms an aligned bearing axis parallel to the impression cylinder longitudinal axis.
• the first step of the angular adjustment on the first bearing side considerably simplified when the roller is dismantled or at least not mounted in the bearing on the opposite second bearing side, so that the angle adjustment without obstruction by fixing on the opposite side of the roll are performed can.
• only one bearing plate, on which a bearing block carrying the bearing can be fastened is aligned by angle adjustment parallel to the impression cylinder.
• the said bearing block can already be placed on the bearing plate, but advantageously also be dismantled from the bearing plate.
• an eccentric is advantageously used, which carries the bearing on the second bearing side.
• the position of the bearing point on the said second bearing side can be adjusted very sensitively.
• exactly the height of the bearing point on the second bearing side can be adjusted relative to the bearing point on the first bearing side in order to give the roller inserted between the two bearing sides exactly parallel alignment with the impression cylinder longitudinal axis.
• the height adjustment occurring by turning the eccentric offset in the radial direction with respect to the impression cylinder can be compensated in a subsequent process step by radial adjustment of the eccentric.
• the adjusting means on said second bearing side in addition to the eccentric comprise a further movement axis radially to the impression cylinder longitudinal axis, so that the height adjustment and the radial adjustment on the second bearing side are decoupled from each other.
• This allows first an exact adjustment in the height direction be made without having to pay attention to an occurring adjustment in a direction perpendicular thereto. Once the exact height setting has been found, the radial position of the bearing point is adjusted, without having to pay attention to the height adjustment.
• the adjusting means are assigned at least on the second bearing side clamping means in order to determine the respectively set position of the bearing and to be able to eliminate bearing clearance.
• the above-mentioned eccentric a transverse to the axis of rotation of the eccentric locking means, for example in the form of a clamping screw, be assigned, by means of which the eccentric can be determined in the found position.
• the adjusting means on the two sides of the bearing can basically be designed differently.
• the adjusting means on the two bearing sides are designed differently from one another.
• the adjusting means may comprise height adjusting means and / or angle adjusting means for adjusting the height and / or the angular orientation of the bearing on said first bearing side.
• said adjusting means engage on the first bearing side between the frame and a bearing plate on which a bearing bracket carrying the bearing is longitudinally displaceably mounted.
• the bearing block carrying the bearing is advantageously mounted longitudinally displaceably on the bearing plate transversely to the longitudinal axis of the impression cylinder in order to deliver the roller to the impression cylinder or to be able to move away from it.
• the adjusting means for the bearing plate may in particular comprise at least one adjusting screw, which is deliverable substantially perpendicular to the plane of the bearing plate in order to thereby adjust the position of the bearing plate in the desired manner.
• adjusting screw which is deliverable substantially perpendicular to the plane of the bearing plate in order to thereby adjust the position of the bearing plate in the desired manner.
• a height adjustment of the bearing plate and an angular adjustment of the bearing plate can be provided.
• the angular adjustment of the bearing plate is possible at least about an axis perpendicular to the longitudinal direction of the impression cylinder and / or the roller.
• the adjustment means on the opposite second bearing side need not include Winkeleinstellstoff, although in principle may be provided on the second bearing side.
• the adjusting means on the second bearing side comprise as height adjusting means the aforementioned eccentric, which can be advantageously designed as an eccentric sleeve, in which the bearing of the second bearing side is accommodated.
• the eccentric can advantageously be rotated about an axis parallel to the roller axis eccentric axis in order to achieve the desired height adjustment of the bearing point.
• Fig. 1 is a schematic plan view of a printing couple of a roller
• Printing machine and the bearing bearing assembly which are assigned on both sides of the roller adjusting means for adjusting the position of the roller, according to a preferred embodiment of the invention.
• Fig. 2 is a front side view of the left in Fig. 1 shown
• the present invention can basically be implemented in printing presses of various types, so that no specific printing press is completely shown in the figures. However, special advantages arise with format-variable flexographic printing machines.
• Figure 1 shows as a roll 1 of a printing unit 2, the format cylinder or the anilox roller of a flexographic printing press, which is rotatably mounted on opposite bearing sides 3 and 4 on a frame 5 about its longitudinal axis.
• the roller 1 On the first bearing side 3, which forms the drive side, the roller 1 is advantageously rotatably supported by a bearing 6 which is fixed to a bearing block 7.
• the bearing block 7 is mounted by means of a linear guide 8, which is formed in the illustrated embodiment as a double-rail track bed guide, longitudinally displaceable transversely to the roller longitudinal axis 9 on a bearing plate 10.
• the linear guide 8 allows a radial advancement of the roller 1 to a counter-pressure cylinder not shown specifically or a driving away of the roller 1 of this impression cylinder.
• the linear guide 8 is associated with an adjusting spindle 11 which acts between said bearing plate 10 and the bearing block 7.
• Said bearing plate 10 is seated on the frame 5 and can be adjusted relative to this setting means 12 in the form of a plurality of screws 13.
• the aforementioned screws 13 engage substantially perpendicular to the plane defined by the bearing plate 10 at this and can move the bearing plate 10 relative to the frame 5.
• a height adjustment, but in particular also an angular adjustment of the bearing plate 10 by a horizontal Winkeleinstellachse perpendicular to the plane of the figure 1 and thus also perpendicular to the roll axis can be effected by adjusting the screws 13.
• the roller 1 is rotatably supported by a bearing 15, which sits itself in a bearing carrier 16.
• said bearing 15 is mounted on the bearing bracket 16 by an eccentric sleeve 17, in whose inner recess the bearing 15 is seated and which sits with its outer circumference in a bearing recess of the bearing bracket 16.
• the inner recess of the eccentric sleeve 17 is offset radially to the eccentric rotation axis 18, cf. FIG. 2. If the eccentric sleeve 17 is rotated in the bearing recess 19 in the bearing carrier 16, as indicated by the arrow 20 in FIG. 2, the bearing 15 experiences a height adjustment perpendicular to the roller longitudinal axis 9.
• the eccentric in the form of the eccentric sleeve 17 is advantageously designed such that a bearing adjustment from the middle position shown in Figure 2 of at least 0.25 mm, advantageously from about 0.3 mm to 1 mm, both upwards and downwards is possible ,
• the eccentric sleeve 17 can be clamped in the respectively set position by clamping means 21, which act advantageously transversely to the eccentric rotation axis 18 to simultaneously eliminate a bearing clearance
• clamping means 21 which act advantageously transversely to the eccentric rotation axis 18 to simultaneously eliminate a bearing clearance
• a clamping screw 22 may be provided by means of which the bearing recess 19 can be clamped together in the bearing bracket 16 to clamp the eccentric sleeve 17 in the bearing recess 19 radially.
• the bearing support 16 advantageously forms a slotted bearing eye, in which the eccentric sits and which can be clamped together by advancing the clamping screw 22, so that its diameter tapers.
• the bearing support 16 can be delivered by radial adjusting means 23 transversely to the impression cylinder longitudinal axis of the impression cylinder and placed away from it.
• a radial offset can be compensated by this separate Radialeinstellstoff 23, which occurs in the height adjustment by turning the eccentric.
• the bearing carrier 16 is adjustable relative to the frame 5 transversely to the roller longitudinal axis 9 along the linear guide axis lying by a linear guide 24, which in the illustrated embodiment is designed as a single rail track bed guide.
• the linear guide 24 is assigned an adjusting means 25 in the form of an adjusting spindle which engages between the frame 5 and the bearing bracket 16.
• the procedure is advantageously as follows: First, the bearing plate 10 is aligned exactly parallel to the longitudinal axis of the impression cylinder on the first bearing side 3. For this purpose, the screws 13 are adjusted accordingly until the desired orientation of the bearing plate 10 is found. In this case, the bearing block 7 may be placed on the bearing plate 10, but advantageously it may also be removed therefrom.
• the bearing 15 of the second bearing side 4 is first of all height-adjusted on the second bearing side 4 by turning the eccentric 17.
• the eccentric sleeve 17 is thereby rotated until the desired altitude is found and the bearings 15 and 6 lie on the two bearing sides 3 and 4 in a common height plane which is exactly parallel to the impression cylinder longitudinal axis. Then occurring by the rotation of the eccentric radial offset by the adjusting spindle 15, which is converted into a corresponding radial movement of the bearing support 16, balanced.
• the bearing 15 comes into a position in which the bearing 15 and the bearing 6 on the two bearing sides 3 and 4 form an aligned bearing axis, which is aligned exactly parallel to the impression cylinder, so that between the two bearings 15 and 6 inserted pressure roller 1 is aligned parallel to the impression cylinder.
• the set for height adjustment rotational position of the eccentric sleeve 17 has previously been frozen by tightening the clamping screw 22.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rotary Presses (AREA)
• Rolls And Other Rotary Bodies (AREA)
• Ink Jet (AREA)
• Pens And Brushes (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=38110276

Family Applications (1)

Country Status (5)

Family Cites Families (8)

• 2006
  • 2006-03-15 DE DE102006011926A patent/DE102006011926B4/de not_active Expired - Fee Related
• 2007
  • 2007-03-05 EP EP07711880A patent/EP2117844B1/fr not_active Not-in-force
  • 2007-03-05 AT AT07711880T patent/ATE469763T1/de active
  • 2007-03-05 ES ES07711880T patent/ES2344866T3/es active Active
  • 2007-03-05 DE DE502007004042T patent/DE502007004042D1/de active Active
  • 2007-03-05 WO PCT/EP2007/002074 patent/WO2007104488A1/fr active Application Filing

Non-Patent Citations (1)

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