Classifications

• • 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
• • 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

Definitions

• Roller locks with an inner part and an outer part
• the invention relates to roller locks with an inner part and an outer part according to the preamble of one of claims 1 to 8.
• Inking units or dampening units in printing machines are used to convey the printing ink or dampening solution required for the printing process from the corresponding supply devices 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 the dampening solution film in the roller strips can be transferred from one roller to another roller.
• rollers with adjustable bearings are provided in a 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.
• DE 15 61 014 C1 discloses a roller bearing that can be adjusted in only one direction, in particular for friction and application rollers of inking units on printing presses, adjustment means being provided for adjusting the roller transversely to its axis, the adjustment means being connected between one and the frame wall Bearing journals and a housing which receives a roller end and is preferably cup-shaped are attached, the bearing journal and the housing being connected to one another by spring elements which counteract the adjusting means.
• the spring elements are preferably as a radial rubber buffer and the adjusting means acting on the bearing journal either as one
• 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 against each other depending on the desired direction of action being optionally pressurized.
• devices for adjusting the contact pressure of an adjustable roller are known, a membrane surrounding a holder forming four pressure chambers in a gap between the holder and a sleeve surrounding it.
• the gap between the holder and the sleeve surrounding it is open and unprotected.
• DE 39 10 827 A1 discloses a cylinder-piston unit for displacing a roller transversely to its longitudinal axis, an annular gap being formed between the piston, which is designed as a reciprocating piston and arranged transversely to the longitudinal axis of the roller, and the inner cylinder wall, one being the annular gap bridging scraper ring and two units spaced apart in the axial direction of the reciprocating piston and sealing the annular gap are each provided with an elastic sealing ring, the scraper ring and supporting rings carrying the sealing rings being radially displaceable in the cylinder in accordance with a transverse displacement of the piston.
• the wiper ring and the sealing rings therefore follow the transverse displacement of the piston essentially without any change in shape.
• the invention has for its object to provide roller locks with an inner part and an outer part.
• the rolling membrane which preferably consists of an elastomer
• the rolling membrane has a clearly defined deformation when it is acted upon by a pressure medium.
• the fact that the roll membrane is detachably inserted into the frame means that it can be easily replaced if necessary.
• a material connection between the frame and the rolling membrane, e.g. B. by vulcanizing, gluing or similar manufacturing process is not required.
• the production of an elastomer-metal connection which can sometimes be expensive and problematic, is thus eliminated.
• the roll membrane can be manufactured as a single component without connection to another component, which has a favorable effect on its production costs.
• the roller membrane exerts a uniform surface pressure on the holder via an intermediate piece arranged in a window of the frame. Only the intermediate piece - and not the roll membrane - has an interface to the holder, so that when the holder is rotated, no friction can occur between the roll membrane and the holder. Greasing or lubrication of the roller membrane is therefore not necessary, which contributes to the low maintenance of the roller lock.
• the chamber formed by the rolling membrane seals itself more and more against the hollow body surrounding the frame due to the sealing lip attached as the pressure medium is increasingly applied. Also, no additional, separate seal for the supply of the pressure medium in the chamber of the rolling membrane is required if the frame with the introduced rolling membrane z. B.
• roller lock allows manual assembly because all interacting components are detachably connected to one another, particularly by plugging.
• the preferred embodiment makes it unnecessary to reinforce the active surface of the rolling membrane, for. B. by an incorporated fabric. It is particularly advantageous that there is an effective surface in all between the roller membrane and the intermediate piece for exerting force
• the roller lock provided a seal between the inner part and the outer part during any radial deflection of the inner part against foreign bodies entering the roller lock, such as. B. dust or moisture seals without hindering the radial adjustment movement of the holder or counteracting the adjustment with a force.
• the roller lock which is operated in the harsh environment of a printing unit in particular, is hermetically sealed by the seal, this seal contributes to the safe and trouble-free functioning of the roller lock and maintenance work to be carried out on it, which leads to the standstill of the entire printing press and thus can mean a loss of production.
• Fig. 1 is a perspective view of a roller lock in the assembled
• Fig. 2 is a perspective view of parts of the roller lock according to the
• FIG. 3 shows a cross section of the roller lock according to FIG. 1;
• FIG. 4 shows a longitudinal section in the axial direction of the roller lock according to FIG. 1;
• FIG. 5 shows an individual part enlargement from FIG. 4
• FIG. 6 is an exploded view to show the assembly of parts of the roller lock according to FIG. 1;
• Figure 1 is a perspective view of the intermediate piece from above.
• 16 is a perspective view of the frame of the roller lock
• Fig. 17 is a longitudinal section of the frame shown in Fig. 16;
• Fig. 18 is a detailed view of the frame shown in Fig. 16;
• Fig. 19 shows a longitudinal section of the roller lock in the assembled state.
• the roller lock has an inner part 01 and an outer part 02.
• the outer part 02 is preferably designed as a frame 02.
• the inner part 01 is preferably designed as a holder 01 connected to a roller (not shown) of a printing press, with the holder 01 on its end facing the roller, for. B. a shell 03 is formed in the z.
• B. a pin arranged on one end of the roller (not shown) can be inserted and held.
• the roller is e.g. B. arranged in an inking unit or a dampening unit of the printing press.
• the pin of the roller is preferably designed to be non-rotatable so that the pin does not rotate the roller. Rather, the roller z.
• the frame 02 comprises the holder 01, at least in its axial direction.
• H. Frame 02 and holder 01 are arranged coaxially.
• the frame 02 is preferably arranged stationary in the printing machine by the frame 02 z.
• B. is attached to a machine frame of the printing press.
• the holder 01 has a positionally stable, in particular rotationally stable operating state in the frame 02, which can be released in order to put the holder 01 into a rotatable operating state, among other things.
• the rotationally fixed operating state of the holder 01 causes z. B. a preferably arranged in the roller lock fixing device 29 (Fig. 19), which by an adjusting means 31 z. B. pneumatically or electrically actuated, in particular z. B. is remotely operable from a control station assigned to the printing press.
• the fixing device 29 is, for. B. designed as a multi-plate clutch, the first clutch elements 32 fastened to the holder 01 and the second clutch elements 33 fastened to the frame 02 and thus non-rotatable, frictionally or positively
• the holder 01 In its position-changing operating state, which is generally only provided for a short time, the holder 01 can be changed or aligned radially and / or in its angular position relative to the frame 02. A continuous rotation of the holder 01 in the frame 02 is not provided as the proper operating state of the holder 01. After loosening the fixing device 29, the holder 01 is in the frame 02 z. B. also slightly axially movable, to the extent that it is necessary to cancel the existing between the first coupling elements 32 and the second coupling elements 33 friction or positive engagement.
• the fixing device 29 is closed again, so that the holder 01 in its new angular position in the frame 02 and / or in its new radial position is fixed relative to the frame 02.
• the frame 02 is preferably of a z. B. surrounded tubular hollow body 04.
• the frame 02 has on an end facing away from the roller z. B. a cover 06.
• In the 02 are z. B. introduced one or more through holes 08 through which fasteners 07, z. B. a screw 07, for mounting the roller lock and / or for fastening the roller lock to the machine frame of the printing press.
• Both the frame 02 and the hollow body 04 surrounding it are preferably formed in one piece and / or cylindrical.
• FIG. 2 shows a perspective view of the hollow body 04 and of the frame 02 of the roller lock according to FIG. 1, an elastic body 09 designed as a membrane 09, in particular as a rolling membrane 09, each in operative connection with a preferably stem-shaped, solid intermediate piece 11 is introduced into a window 12 (FIG. 4) introduced into the frame 02.
• a window 12 FIG. 4
• the frame 02 has a plurality of windows 12, the windows 12 are preferably introduced equidistantly along the circumference of the frame 02. 3 leaves in a representation
• the intermediate piece 11 assigned to each rolling membrane 09 is arranged radially between the frame 02 and the holder 01 (not shown in FIGS. 2 and 3 for the sake of clarity).
• the intermediate piece 11 is preferably surrounded by the rolling membrane 09.
• the rolling diaphragm 09 can exert a radial force during its deflection by means of an active surface 13 of the intermediate piece 11, i. H. Exercise indirectly on the holder 01, so that the force exerted by the roller membrane 09 on the holder 01 continuously adjusts the stroke of the roller connected to the holder 01, the stroke of the roller being e.g. B. can be up to 10 mm.
• the stroke of the roller is preferably directed transversely to its axial direction, i. H.
• the stroke is preferably carried out in a plane substantially perpendicular to the axial direction of the roller.
• the intermediate piece 11 is z. B. laterally in the window 12 of the frame 02.
• the intermediate piece 11 is in the window 12 of the frame 02 in a cross-sectional plane of the frame 02 z. B. tilted.
• the intermediate piece 11 is preferably designed to be slidable at an interface 13 with the holder 01, the interface 13 forming an active surface 13 with the holder 01.
• the roller membrane 09 accordingly exerts a force through the window 12 on the holder 01, the roller membrane 09 pressing the intermediate piece 11, which is made of a non-elastic and thus incompressible material, against the holder 01.
• the roll membrane 09 is arranged in the frame 02 and is preferably detachably connected to the frame 02, so that the roll membrane 09 can be exchanged in a simple manner because it can be removed from the frame 02 without being destroyed.
• the roll membrane 09 is only mechanically knotted into the window 12 of the frame 02 and is not integrally inserted.
• the roller membrane 09 preferably closes the window 12 over the entire surface.
• the roll membrane 09 has a seal 14 which seals the roll membrane 09 against the frame 02 and which is preferably designed as a bead 14 with which the roll membrane 09 engages in a form-fitting manner in a bead formed on the frame 02 in the window 12 of the frame 02, whereby
• the roll membrane 09 is fixed in the frame 02.
• the bead 1 on the rolling membrane 09 is preferably formed all the way round.
• the rolling membrane 09 introduced in the window 12 of the frame 02 forms a chamber 16 which is open to the hollow body 04.
• the rolling membrane 09 advantageously has a sealing lip 17 facing the hollow body 04 (FIG. 5), the sealing lip 17 sealing the chamber 16 against the hollow body 04 applied to the frame 02.
• the chamber 16 can be acted upon with a pressure medium, preferably with compressed air of, for. B. up to 6 bar. An increasing internal pressure in the chamber 16 as a result of the application of the pressure medium presses the sealing lip 17 against the hollow body 04.
• the chamber 16 which is formed by the rolling membrane 09 and sealed by the hollow body 04, forms one together with the intermediate piece 11 when a pressure medium is applied Actuating the holder 01, the chamber 16 which can be pressurized with the pressure medium forms an adjusting means for the intermediate piece 11 which can be moved along an adjustment path, the intermediate piece 11 transmitting the force exerted by the chamber 16 to the holder 01.
• the rolling membrane 09 is preferably made of an elastomer material, e.g. B. PUR or NBR.
• the frame 02 consists of a dimensionally stable material, for. B. from a metallic material, from a plastic or from a composite material.
• the hollow body 04 also consists of a dimensionally stable material, for. B. from a metallic material, in particular aluminum.
• the hollow body 04 is advantageously designed as a tube.
• the intermediate piece 11 is, for. B. from a plastic and z. B. made by injection molding.
• the rolling membrane 09 preferably has at least one through hole 18 in the axial direction of the frame 02 for supplying the pressure medium to the chamber 16, e.g. B. a through hole 18, wherein the through hole 18 in the axial direction of the
• Frame 02 on the side facing away from the chamber 16 has, for example, an annular seal 19 (FIG. 4), which is integrally formed there on the rolling membrane 09, for example
• the rolling membrane 09 has a U-shaped rolling area A between the frame 02 and the intermediate piece 1.
• This rolling area A of the rolling membrane 09 is preferably circumferential and comparatively narrow around the chamber 16 to the size of the window 12, which extends, for example, over a length a (FIG. 7) in the circumferential direction of the frame 02, the length az B being 50 mm to 100 mm
• the sealing lip 17 can have, for example, a projection protruding over the edge by the length c and a length b directed from the edge of the rolling membrane 09 into the interior of the rolling membrane 09.
• the length c can be 1 mm up to 2 mm, the length or B 2 mm to 6 mm.
• the roller membrane 09 has a thickness d of z B 1 mm to 2 mm on its surface acting on the intermediate piece 11
• the intermediate piece 11 can have, for example, diagonally extending ribs 21, which, for example, form essentially diamond-like cavities 22, the cavities 22 being open to the active surface 13 with the holder 01
• Intermediate piece 11 is preferably concave on its side facing the holder 01 (underside) and preferably convex on its side facing the rolling membrane 09 (upper side).
• the intermediate piece 11 can have an essentially rectangular or oval outline with edge lengths e and f , the intermediate piece 11 being plugged with its outline onto the rolling membrane 09 such that the rolling membrane 09 rests with one side of its rolling area A on a peripheral edge 23 of the intermediate piece 11
• FIGS. 17 and 18 show a longitudinal section of the frame 02 shown in FIG Detailed view of the frame 02 shown in FIG. 16
• a seal 24, for example in the form of a circle, is preferably attached to an end face of the frame 02, which preferably consists of an elastic material and is designed, for example, as an elastic sealing lip 28 attached to a rigid ring 27 ( Fig. 18)
• the ring 27 can, for example, be made of a metallic material to which the sealing lip 28 is, for example, vulcanized or glued.
• the sealing lip 28 lies in a preferably prestressed state on the lateral surface of the holder 01 and in this way seals one between the Holder 01 and the frame 02 existing, preferably circular-shaped space 26 against foreign objects penetrating into the roller lock, such as in particular dust or moisture
• the assembled state of the roller lock is shown in a longitudinal section in FIG. 19.
• the space 26 between the holder 01 and the frame 02 can be in the operating state in which the holder 01 is not deflected radially relative to the frame 02, but rather the holder 01 and the Frames 02 have concentric cross-sectional areas, for example a gap width w (FIG. 19) of between 1 mm and 6 mm, preferably between 2 mm and 4 mm, in particular about 3 mm.
• w gap width
• the sealing lip 28 is pre-tensioned on the holder 01, it does not exert a restoring moment onto the holder 01 when it is deflected radially after the fixing device 29 has been loosened.
• the seal 24 or at least its sealing lip 28 is therefore preferably thin and soft-elastic, so that the seal 24 follows the movement of the holder 01 without this movement to counteract a force in a disruptive manner
• the seal 24 accordingly adjusts in the space 26 between the holder 01 and the frame 02 sealing
• its radial ring width is preferably designed larger than the gap width w of the intermediate space 26 requires when the holder 01 and the frame 02 are aligned concentrically.
• the ring width can e.g. B. be twice the size of the gap width w of the gap 26 or more.
• the radial extension of the seal 24 can fold, at least partially, in particular in the operating state when the holder 01 is radially deflected relative to the frame 02.
• the seal 24 is preferably fixedly connected to the frame 02, the sealing lip 28 of the seal 24 bearing against the holder 01 in a pre-tensioned manner.
• the seal 24 can also preferably be firmly connected to the holder 01, the sealing lip 28 of the seal 24 bearing against the frame 02 in a form-fitting manner. In both cases, it must be ensured that the seal 24 seals the gap 26 existing between the holder 01 and the frame 02 during any deflection of the holder 01 in the frame 02, so that components arranged inside the roller lock, such as, for. B. the elastic membrane 09, the intermediate pieces 11 and other foreign objects penetrating into the roller lock against the danger from the outside, such as. B. dust and moisture, reliably and permanently protected.
• the seal 24, or at least the sealing lip 28 can be radially displaceable during a deflection of the holder 01.
• the sealing lip 28, at least in the unmounted state of the frame 02 and holder 01 preferably has an inclination angle ⁇ with respect to the end face of the holder 02, this inclination angle ⁇ preferably being inclined away from the roller lock and z. B.
• the sealing lip 28 forms a projection g opposite the end face of the holder 02, the projection g z. B. is between 1 mm and 5 mm.
• the sealing lip 28 projects from its attachment z. B. on the frame 02 preferably directed radially into the interior of the frame 02 with a preferably circumferential width h, in particular ring width h, into the frame 02, the width h being greater than the maximum radial deflection of the holder 01 in the frame 02 and is preferably between 3 mm and 10 mm.
• the radial adjustment path of the holder 01 in the frame 02 can be the gap width w between the holder 01 and the Make full use of frame 02, whereas a relatively small travel of holder 01 in frame 02 is sufficient to set the contact pressure or contact pressure exerted between the adjacent rollers, provided that the roller to be set in its contact pressure or contact pressure is already in contact with the adjacent roller. So z. B. to form a roll strip with a width of 8 mm directed in the circumferential direction of the roll between the two adjacent rolls, an adjustment path of 0.2 mm for the radially adjustable mounted roll may be sufficient.
• the seal 24 arranged between the holder 01 and the frame 02 is designed and designed in such a way that, due to its elasticity, it follows the large radial adjustment path required for turning the roller on or off, without deflecting from the rest position, which is preferably located in the center of the frame 02 Holder 01 to exert a restoring force, wherein the deflection of the holder 01 is preferably carried out by means of the intermediate pieces 11 each actuated by a membrane 09.
• a taxi area A taxi area

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rolls And Other Rotary Bodies (AREA)
• Sealing Devices (AREA)
• Inking, Control Or Cleaning Of Printing Machines (AREA)
• Road Paving Machines (AREA)
• Diaphragms And Bellows (AREA)
• Massaging Devices (AREA)

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• 2004
  • 2004-05-14 WO PCT/EP2004/050807 patent/WO2004103704A2/fr not_active Ceased
  • 2004-05-14 EP EP09168606A patent/EP2130675B1/fr not_active Expired - Lifetime
  • 2004-05-14 US US10/558,485 patent/US7448322B2/en not_active Expired - Fee Related
  • 2004-05-14 ES ES04732994T patent/ES2333795T3/es not_active Expired - Lifetime
  • 2004-05-14 DE DE502004010320T patent/DE502004010320D1/de not_active Expired - Fee Related
  • 2004-05-14 AT AT04732994T patent/ATE447483T1/de not_active IP Right Cessation
  • 2004-05-14 EP EP04732994A patent/EP1628829B1/fr not_active Expired - Lifetime

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