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
  • B41F13/30—Bearings mounted on sliding supports
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/0024—Frames
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2217/00—Printing machines of special types or for particular purposes
  • B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
  • B41P2217/11—Machines with modular units, i.e. with units exchangeable as a whole

Definitions

• the invention relates to printing units and a method for moving a frame part according to the preamble of claim 1, 2, 25 or 30
• a printing unit is known from EP 0 749 369 B1, in which rollers are mounted on the movable frame part, which rest on horizontal rails and which also carry the stationary frame part.
• the one on each roll of the movable can Frame part's static load can reach a value of several tons.Therefore, extreme pressure occurs at the contact surfaces between the rollers and the rails.
• the rollers can be made of hardened steel, which can withstand the pressures that arise, this is difficult for the rails due to their dimensions
• the rails are made of unhardened steel, there is a risk that the wheels will be pressed into the rails and it will become impossible to move the movable frame part evenly or to set them in motion at all
• US Pat. No. 5,060,569 A discloses a frame part which can be moved on rollers, the rails being raised for moving and the frame resting on another frame during operation
• the invention has for its object printing units and a method for Moving to create a frame part
• the retractability of the rollers creates the possibility of at least partially shifting the weight on them onto a contact surface different from the rollers and thus relieving the rollers to such an extent that an impression of the rollers in a carrier is no longer to be feared
• the rails, on which the rollers also rest when extended, serve as a support on which the contact surfaces different from the rollers are supported
• the contact surfaces can simply be formed by the lower edges of rare frame plates of the movable frame part
• Each frame part preferably has at least one blanket cylinder as the cylinder which delimits the printing gap, a forme cylinder and an inking unit, so that the two blanket cylinders, forme cylinder, etc. each form a bridge-type printing unit which is suitable for gentle and reverse printing
• the adjustability of the rollers between the extended and the lowered position is preferably achieved in that the axes of rotation of the rollers are each one Eccentric axis are pivotally held on the movable frame part.
• a pneumatic or hydraulic actuator is preferably used to drive a pivoting movement of at least one of the rollers about its eccentric axis
• rollers pivotable about a common eccentric axis are arranged on a common torsionally rigid shaft, a single actuator can be used to pivot both rollers and / or the printing unit cannot be tilted during the retraction or extension of the rollers
• the two rollers which can be pivoted about a common eccentric axis are each arranged in such a way that they support different frame plates
• rollers in particular those that run on a common rail or support an identical frame plate, can be pivotally coupled via a rod that engages the shafts of the rollers via levers
• a projection oriented in the direction of movement of the movable frame part is preferably formed on one of the frame parts and a recess complementarily shaped to the projection is formed on the other frame part, which interlock positively when the frame parts are without Distance are arranged
• the projection or the recess can automatically exert a centering effect when the frame parts are brought together if the projection is tapered to its free end and / or the recess to a floor hm
• the projection is a vertically oriented rib and the recess is a vertically oriented groove is formed in order to define the position of the two frame parts relative to one another only in a horizontal direction transverse to the direction of movement, but not in the vertical
• At least one upright guide rail which is firmly connected to one of the frame parts and extends in the movement direction of the movable frame part, is provided, which is surrounded on two sides by a tracking device of the other frame part.
• This tracking guide device preferably comprises at least one A pair of guide rollers that roll on both sides of the guide rail
• a rack extending in the direction of movement of the movable frame part is expediently mounted on one of the frame parts, and a self-locking drive engaging in the rack, which can be pushed out of the rack, is mounted on the other frame part in order to move the movable frame in the event of a fault Frame part not to be blocked
• the strongly reducing drive is preferably realized with the help of a worm gear. It is preferably pivotably attached for disengagement from the rack
• At least one hook is preferably provided on one of the frame parts, which can be brought into engagement with the other frame and can be subjected to a tensile force acting in the direction of the one frame.
• the movable frame part is preferably identical to the above-mentioned movable frame, the stationary frame part can also comprise the carrier in addition to the frame fixed frame
• the hook preferably engages a roller of the other frame part, so that its movement into or out of the engaged position does not go through strong frictional forces are impeded.
• a pneumatic or hydraulic actuator is used to drive a pivoting movement of the hook into or out of the engagement position.
• the supply of the actuator with pressure fluid is simplified if the frame to which the hook and the actuator are attached is the stationary frame is
• At least one hook should exert a pulling force with a downward-pointing component on the movable stand in order to fix the latter also in the vertical direction
• FIG. 1 is a schematic representation of a printing unit with a movable frame spaced from the stationary frame
• FIG. 2 shows the printing unit from FIG. 1 with the movable frame part in a position that is not spaced apart from the stationary frame and with extended rollers
• FIG. 3 shows the printing unit from FIG. 1 with the rollers retracted in a working position
• Fig. 6 is a perspective view of a chassis of the movable frame part
• FIG. 7 shows a schematic section through a wheel housing of the chassis from FIG. 6,
• FIG. 9 shows a schematic section through the drive mechanism from FIG. 8,
• FIG. 10 is a schematic view of a locking mechanism for locking the frame parts together
• FIG. 11 shows a top view, cut to z T, of the locking mechanism of FIG. 9
• FIG. 12 is a schematic view of a locking mechanism for locking the movable frame part on the carrier
• Fig. 13 is a schematic representation of a printing unit with two movable and one fixed frame
• FIG. 14 shows a schematic illustration of a locked printing unit according to FIG. 13
• a printing unit is shown with four printing units arranged one above the other, with pairs of cylinders 01, for example blanket cylinders 01 or rollers.
• Each blanket cylinder 01 is assigned a plate cylinder, an inking unit and a dampening unit in a manner known per se which are held together with the rubber blanket cylinder 01 between side frame plates 02 03.
• the internal structure of the printing units is not described in detail here described, since it is not necessary to understand the present invention, a description of this internal structure is given in EP 07 49 369 B1, to which reference is hereby made
• the two side frame plates 03 form, together with the cylinders 01, dye, which they carry - And dampening a movable frame 15, they are firmly mounted between upper and lower beams 04 06, which are each built on two mutually cross-connected parallel rails 05 (see Fig. 6 and 1)
• the side frame plates 03 are provided on their lower edge with rollers 07 which are adjustable between an extended and a lowered position, together with the components held between them, form a movable frame part 15.
• FIG. 1 shows the rollers 07 in their extended position, in which they remove the side frame plates 03 from the rails 05 of the lower carrier 06 keep spaced
• These rails 05 serve simultaneously g as a path on which the rolls 07 roll
• Fig. 1 shows the movable frame 15 in a position spaced from the side frame plates 02, in which an operator 08 can enter the space between the pairs of rubber blanket cylinders 01 and carry out maintenance work such as a rubber blanket replacement.
• the movable frame 15 is in the Fig. 1 shifted to the left until it reaches the position shown in Fig. 2, which the stationary side frame plates 02 and the movable side frame plates 03 touch each other on mutually facing edges 09, 11.
• the blanket cylinders 01 of the movable frame part 15 is slightly higher than that of the stationary one.
• the movable frame 15 becomes, as in FIG. 3 shown, a piece lowered so that the lower edges of the side frame plates 03 come to lie on the rails 05 of the carrier 06, and the pairs of rubber blanket cylinders 01 each come to the same height and form a pressure gap in which a material path passed between them 12, e.g. paper web 12 can be printed
• the rollers 07 While in the positions of FIGS. 1 and 2, the rollers 07 carry the entire weight of the movable frame part 15 with the side frame plates 03 and the cylinders 01 of several printing units held between them and transfer them to a small surface of the lower carrier 06, distributed in the position of Fig. 3, in which the entire lower edge of the side frame plates 03 on the lower support 06 rests the weight on a much larger area than if the frame 15 is only supported by the rollers 07.
• the rollers 07 only support the movable frame 15 when this is to be moved, and possibly if it is spaced from the frame-fixed frame 13 as shown in FIG. 1 and the space between the frame parts 13 15 can be walked on, i.e.
• FIGS. 4 and 5 A preferred mechanism for retracting and extending the rollers 07 is shown in FIGS. 4 and 5, FIG. 4 showing the rollers 07 in the extended position and FIG. 5 in the lowered position.
• the rollers 07 have an axis of rotation 14 which is via a lever arm 17 are articulated to a pivot axis 16 which is stationary with respect to the side frame plate 03.
• a lever arm 18 is rigidly connected to the lever arm 17 of the right-hand roller 07 in the figure, the free end of which is connected to a piston rod 19 of a pneumatic or hydraulic actuator 21, for example a hydraulic cylinder 21 attacks a pole 22, eg synchronizer rod 22, is articulated on the one hand to a free end of a lever arm 23 rigidly connected to the lever arm 17 of the left roller 07 and on the other hand to an intermediate point on the lever arm 18.
• the distance of the intermediate point from the adjacent eccentric axis 16, eg pivot axis 16, corresponds to the length of the lever arm 23, so that the lever arms 18, 23 coupled by the synchronizing rod 22 always perform the same rotary movements.
• a chamber 26 of the hydraulic cylinder 21 facing away from the piston rod 19 is pressurized, so that the piston rod 19 is extended to a stop and the rollers 07 hold in the extended position
• the piston rod 19 is slowly retracted and the rollers 07 pivot counterclockwise about their pivot axes 16 until the lower edge of the side frame plate 03 touches down on the carrier 06
• the rollers 07 are then in a retracted position in which they rest loosely on the carrier 06 by pressurizing a second chamber 27 of the hydraulic cylinder 21 facing the piston rod 19, they can be lifted off the carrier 06 into the position shown in FIG
• FIG. 6 shows a detailed illustration of a chassis of the movable frame part 15 and of two rails 05 of the lower support 06, on which the chassis is movable.
• the hydraulic cylinder 21 already described, the piston rod 19 and the lever arm 18 can be seen.
• the end facing away from the piston rod 19 of the hydraulic cylinder 21 is connected to a horizontal arm 28, which starts from a flange 29, from the side facing the viewer four pins 31 protrude.
• These pins 31 are screws 31, which are provided for the flange 29 on one of the to screw two side frame plates 03 of the movable frame part 15 (which are not shown in FIG. 6).
• Corresponding pins 32 serving the same purpose, for example screws 32, are above the side walls of two wheel arches 33 34.
• the wheel arches 33 34 each contain one of the previously mentioned roles 07
• FIG. 7 A schematic section through the wheel arch 34 is shown in FIG. 7.
• the position of the pivot axis 16 is denoted by a cross. It is the longitudinal axis of a shaft 36, eg pivot shaft 36, which extends transversely through the wheel arch 34 and on the outside of the wheel arch 34 the lever arm 18 connected to the piston rod 19 engages the lever arm 17 is realized by an eccentric sleeve 37, the inner bore of which rotatably encloses the pivot shaft 36 and the outer circumference of which carries a roller 07 via a bearing 38, for example a roller bearing 38.
• the center of the outer circumference the sleeve 37, which defines the axis of rotation of the roller 07 is denoted by a cross 39.
• the pivot shaft 36 extends, as shown in FIG. 6, from the wheel arch 34 transversely below the movable frame 15 and passes through a wheel arch 42 in which a roller 07 is mounted in the same way as in the wheel arch 34
• the synchronizer rod 22 engages on the one hand via a lever arm 43 and on the other hand via the lever arm 23 on the swivel shaft 36 and a shaft 44, for example swivel shaft 44, which runs parallel to it, through wheel housings 46 and 33.
• a shaft 44 for example swivel shaft 44, which runs parallel to it, through wheel housings 46 and 33.
• a guide rail 47 here with an F-shaped cross section, is firmly connected.
• This guide rail 47 which can be moved together with the movable frame 15, has a vertically downward-pointing rib 48 which, when the frame part 15 is displaced, between two Pairs of guide rollers 49 runs through touching, which are mounted on one of the rails 05 apart from a rolling surface over which the rollers 07 move
• Guide rail 47 and guide rollers 49 force an exactly linear movement of the movable frame part 15 along the rails 05 without the possibility of an offset transversely to the longitudinal direction of the rails 05.
• a corresponding guide rail 47 and guide rollers 49 can also be attached to the wheel housing 42, 46 or the in FIG. 6, the support 06 facing the viewer can be mounted
• the drive device shown in a perspective view in FIG. 8 is mounted on the chassis or one of the side frame plates 03 of the movable frame part 15.
• Two rigid arms 51 protrude transversely to the direction of movement from the chassis or one of the side frame plates 03. These arms 51 are supported between them suspended in an articulated manner from an axis 52, a gear unit 53 with a motor 54, e.g. an electric motor 54, which drives a gear 56 via a self-locking reduction gear housed in the gear unit 53.
• the gear 56 meshes with a stationary gear rack 57
• FIG. 9 shows a section through the drive device of FIG. 8. It can be seen that the gear unit 53 is supported by a projection 58 of a pivot lever 59 articulated on one of the arms 51 and thus the gear wheel 56 is held in engagement with the rack 57 lift, so the gear unit 53 could pivot about the axis 52 clockwise and thus disengage the gear 56 from the rack 57 and cancel the frictional connection between the electric motor 54 and the rack 57
• a gear 61 which is directly driven by the motor 54 and which meshes with a larger gear 62.
• This gear is mounted on a common axis with a worm 63, which in turn meshes with a worm gear 64 which meshes with the gear 56
• a common axis is mounted worm 63 and worm wheel 64 cause self-locking of the Gear through which the gear 56 is locked when the electric motor 54 is switched off
• FIG. 10 shows a section of one of the stationary side frame plates 02 and one of the movable side frame plates 03, the vertical edges 09, 11 of which touch one another in the working position of the printing unit, with a mechanism for locking the side frame plates 02, 03 to one another in the working position.
• This mechanism comprises one pivotable hook 66, which is articulated to a forked bearing block 67 shown in FIG. 10 in section.
• Two bores 68 serve for screwing the bearing block 67 to the side frame plate 02; these bores 68 ensure a horizontal play of the bearing block 67.
• the radius of the inner flank 69 based on the pivot axis of the hook 66 on the bearing block 67, takes in Counterclockwise slightly, so that the mecanicfla ⁇ ke 69 is able to engage behind the locking projection 71, even if the edges 09 11 of the side frame plates 02, 03 do not touch directly, and by pivoting the hook 66 clockwise, the two side frame plates 02 03 to pull until they touch in the stop position shown
• the pivoting movement of the hook 66 is driven by an actuator 72, for example a pneumatic cylinder 72
• the locking projection 71 is formed by a central pin 73 fixedly connected to the side frame plate 03 and a roller-mounted roller 74 surrounding the pin 73. This roller 74 can rotate when the hook 66 is pressed onto the locking projection 71, so that despite considerable tensile forces, which the hook 66 can exert when pivoting on the locking projection 71, the movement of the hook 66 is not blocked by excessive friction
• the bearing block 67 is additionally secured by two screws 76, which enter the bearing block from a holding block 77 rigidly attached to the plate 02 67 are screwed in FIG. 10 shows these screws 76 screwed in as far as possible so that the bearing block 67 touches the holding block 77. If the screws 76 are loosened a little, it is possible to place the bearing block 76 a little closer to the edge 09 and with the help the screws engaging in the holes 68 on the side frame plate 02
• FIG. 11 shows the locking mechanism of FIG. 10, partially in a top view, partially in section.
• the pneumatic cylinder 72 and the hook 66 on which it engages in an articulated manner can be seen.
• Two depressions are formed on the mutually contacting edges 09 11 of the side frame plates 02 03, one in the recess of the side frame plate 02
• Insert body 78 with a vertical recess 79 z B groove 79 of trapezoidal cross-section is screwed and an insert body 81 with a form-fitting projection 82 z B rib 82 is housed in the recess of the side frame plate 03.
• the insert body 81 also serves as a support for Pin 73 and roller 74 of the locking projection 71
• Rib 82 and groove 79 ensure an exactly aligned alignment of the side frame plates 02 03 with respect to one another transversely to the direction of movement when they touch each other in the working position of the printing unit.
• insert bodies 81 with groove 79 and rib 82 are each only on one of the two side frame plates 02 03 of the stationary or of the movable frame part 15 are provided.
• the insert bodies attached to the respective other side frame plates 02 03 are flat rib 82 and groove 79 on their mutually facing sides allowing vertical movement of the side frame plates 02 03 against one another when the rollers 07 transition between the recessed and the extended position
• a first hook 83 with a ramp-shaped upper side can be pivoted about an axis 84 on the side frame plate 02 and has a notch 86 on its upper side, which in the locked state receives a locking projection 87 of the side frame plate 03.
• the construction of the locking projection 87 is the same as that of the locking projection 71.
• An actuator 88 for example a pneumatic cylinder 88, is used to lock and unlock the hook 83; of the pneumatic cylinder 88 is articulated to a first rod 89, which engages the hook 83, and to a second rod 91, which in turn is articulated at its second end to the carrier 06 and forms an angle with the rod 89 when the piston rod is out of the retracted extended position shown, the angle between decreases the rods 89, 91, the point of engagement of the rod 89 on the hook 83 lowers, and the locking projection 87 is released so that the movable frame 15 can be moved
• a second actuator 92 for example pneumatic cylinder 92k, is aligned essentially horizontally on the carrier 06, like the pneumatic cylinder 88, and has a piston rod which is connected to two rods 93, 94, which are angled in a similar manner to the rods 89, 91, engages on the one hand on the carrier 06 and on the other hand on a hook 96
• This hook 96 like the hook 66, has an inner flank 97 which slides along a locking projection 98 of the side frame plate 03 when the hook 96 is extended, thereby orienting one downwards and towards the side frame plate 02 The tensile force exerts on the locking projection 98, which increases the closer the hook 96 is to the stop position shown in FIG. 12.
• the hook 96 thus performs a double locking function, on the one hand it holds the side frame plate 03 printed against the side frame plate 02 and on the other hand he holds them on the carrier 06
• the hooks 66, 83, 96 can be ventilated, for example, by means of a toggle lever
• the printing unit has three frame parts 104, 106, 107, each consisting of two side parts 102, 102, 103, which are always mounted between upper and lower supports 04, 06, wherein in the middle frame 106 forme cylinders and transfer cylinders are arranged.
• inking units are arranged which are assigned to the forme cylinders
• the two outer frame parts 104 and 107 can be moved in a maintenance or rusting position, so that an accessible space is created in each case
• the moved-together state is the production position, that is, the printing unit prints.
• the three frame parts 104, 106, 107 are connected to one another by means of a locking device 108
• the middle position 106 has at least two cylinder pairs arranged as a bridge printing unit, but preferably four vertically cooperating bridge printing units
• the forme cylinders of the exemplary embodiments preferably each have at least two pressure plates, preferably four pressure plates, in the axial direction

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rotary Presses (AREA)
• Inking, Control Or Cleaning Of Printing Machines (AREA)
• Steering Control In Accordance With Driving Conditions (AREA)
• Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=34441917

Family Applications (1)

Country Status (8)

Families Citing this family (11)

Family Cites Families (8)

• 2003
  • 2003-10-14 DE DE10347573A patent/DE10347573B4/de not_active Expired - Fee Related
• 2004
  • 2004-04-29 AT AT04730269T patent/ATE366658T1/de not_active IP Right Cessation
  • 2004-04-29 EP EP04730269A patent/EP1673223B1/fr not_active Expired - Lifetime
  • 2004-04-29 ES ES04730269T patent/ES2287724T3/es not_active Expired - Lifetime
  • 2004-04-29 DE DE502004004312T patent/DE502004004312D1/de not_active Expired - Lifetime
  • 2004-04-29 JP JP2006524348A patent/JP2007504015A/ja not_active Withdrawn
  • 2004-04-29 US US10/575,475 patent/US20070137510A1/en not_active Abandoned
  • 2004-04-29 CN CNB2004800251536A patent/CN100464977C/zh not_active Expired - Fee Related
  • 2004-04-29 WO PCT/EP2004/050648 patent/WO2005037552A1/fr active IP Right Grant

Non-Patent Citations (1)

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