EP0862519A2 - Rubber blanket for a printing machine - Google Patents

Rubber blanket for a printing machine

Info

Publication number
EP0862519A2
EP0862519A2 EP96945728A EP96945728A EP0862519A2 EP 0862519 A2 EP0862519 A2 EP 0862519A2 EP 96945728 A EP96945728 A EP 96945728A EP 96945728 A EP96945728 A EP 96945728A EP 0862519 A2 EP0862519 A2 EP 0862519A2
Authority
EP
European Patent Office
Prior art keywords
rubber blanket
rubber
slot
blanket
carrier plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96945728A
Other languages
German (de)
French (fr)
Other versions
EP0862519B1 (en
Inventor
Helmut Puschnerat
Wolfgang Günter RUCKMANN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer Albert AG filed Critical Koenig and Bauer Albert AG
Publication of EP0862519A2 publication Critical patent/EP0862519A2/en
Application granted granted Critical
Publication of EP0862519B1 publication Critical patent/EP0862519B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure
    • B41N10/04—Blanket structure multi-layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
    • B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/909—Resilient layer, e.g. printer's blanket

Definitions

  • the invention relates to a blanket for a printing press according to the preamble of claim 1.
  • the invention has for its object to provide a multi-layer rubber blanket with a form-stable len carrier plate.
  • the device according to the invention is shown in the drawing and is described in more detail below.
  • Figure 1 is a schematic representation of a cross section of a rubber blanket according to the invention on a rubber tuc ht rage, one angled end of which is lifted out of a slot of the rubber blanket carrier;
  • Fig. 2 shows a section through an enlarged schematic representation of both ends of the blanket according to the invention applied to the blanket carrier in a further embodiment.
  • a rubber door cylinder 1 of a rotary printing machine is for receiving rubber door parts 31 with bent ends 3, 4 with at least one parallel to its axis of rotation and extending from a lateral surface 6 of the rubber cylinder 1 provided in its interior 5 extending narrow slot 7.
  • a folded leg 8 at the leading end 3 is longer in the present example than a corresponding bent leg 9 at the trailing end 4 of the carrier plate 2.
  • the rubber blanket 32 consists of several Layers as a composite, e.g. B. a top layer 42, a fabric layer 43, an adhesive layer 44, a reinforcement layer 45, a compressible layer 46 with closed cavities, a reinforcement layer 47 and a further reinforcement layer 48 connected to the carrier plate 2 (FIG. 2 ).
  • These layers 42 to 48 are e.g. B. connected by gluing or vulcanizing fabric f ig h ig.
  • At least the top layer 42 of the rubber blanket 32 stands over the layers 43 to 48 underneath and is placed around them, so that their underside lies against end faces 43a to 48a of the remaining rubber layers 43 to 48 and is connected to these materials is attached; z. B. by gluing or vulcanizing.
  • the end faces 43a to 48a of at least one end, in particular the leading end of the rubber blanket 32, are thus sealed. It is also possible to seal the second end 4 of the rubber blanket 32 in this way.
  • the end face 42a of the top layer 42 can additionally be connected to the carrier plate 2 s tof f s c h lüs s i g.
  • sealing is also effected in that the cover layer 42 of the rubber blanket is bent over and only the end face 42a of the cover layer 42 is connected to the carrier plate 2 by a material connection.
  • the end faces 43a to 48a covered by the cover layer 42 and the layers 43 to 48 which are located there can be at the height of the layers 43, 44 of the leading end 3 of the rubber blanket 32 as a cloth sheet in the axially parallel direction of the rubber sheet
  • the overhanging protrusion 49 extending over 1 is formed. This projection 49 interacts with a slope 51 running on the trailing end 4 of the rubber blanket 32 at the height of the layers 44 to 48, also in ac hspa ra 11e le r direction.
  • the projection 49 and the bevel 51 are formed by the layers 43 to 48 being stepped shorter towards the support plate 2 (projection 49) and the layers 48 to 44 being stepped shorter towards the outside from the support plate 2 (bevel 51 ).
  • top layer 42 it is also possible, in addition to the top layer 42, to form a further layer 43 longer and to guide these layers 42, 43 over the end faces 44a to 48a of the layers below and to fasten them in the manner described above.
  • the rubber blanket 32 is fastened on the carrier plate 2 in such a way that the two legs 8, 9 of the carrier plate 2 at the bent ends 3, 4 of the rubber cloth i nhe it 31st are free of the rubber blanket 32 and thus only the two legs 8, 9 of the carrier plate 2 protrude into the slot 7.
  • the slot 7 is preferably rectangular in cross section.
  • a bore 12 running parallel to the slot 7 is made in the rubber cloth cylinder 1.
  • the slot 7 tangent to the bore 12 in the form of a chord, so that the bore 12 is connected to the slot 7.
  • This spindle 16 is provided in the axial direction with a plurality of pressure pieces 17 acting radially outwards.
  • the pressure pieces 17 are fastened in the spindle 16 in such a way that their pressure cams 18 have an outer surface 19 of the spindle 16 can work springily.
  • the pressure cams 18 are provided at their outer end with a ball dome, but there are also zy li nde rsegment fö rmi ge configurations possible, so that there is, for example, a linear contact zone for each pressure cam 18.
  • Beta 80 °
  • r22 14.5 mm.
  • ends 26 of flexible, but pressure-resistant lifters 27 are suspended, which in the present example are designed as leaf springs.
  • these lifters 27 adapt to the shape of the spindle 16.
  • the mode of operation of the device according to the invention is as follows:
  • the reduced lateral surface 22 of the spindle 16 is in the area of the slot 7.
  • the two bent legs 8, 9 of the carrier plate 2 of the ends 3, 4 of the rubber sheet 31 are inserted into the slot 7 guided, the reduced lateral surface 22 serving as a guide.
  • the folded ends 3, 4 of the rubber tuchei nhei t 31 are adapted to the angle of inclination alpha of the slot 7.
  • the rubber blanket 32 extends both at the leading end 3 and at the trailing end 4 to the slot 7 interrupting the lateral surface 6 of the rubber door cylinder 1, i.e. the rubber blanket 32 ends on the carrier plate 2 in the region of a fold 36, 37 of the legs 8, 9.
  • the rubber blanket 32 is pulled a little around the bevel 36 at the leading end 3, but without abutting the leg 9 of the carrier plate 2 of the trailing end 4.
  • the spindle 16 is rotated counterclockwise until the pressure pieces 17 almost perpendicular are directed with respect to the legs 8, 9 of the support plate 2.
  • the pressure cams 18 of the pressure pieces 17 are pressed against the legs 8, 9 of the carrier plate 2 by means of spring force which is supported on the spindle 16.
  • the legs 8, 9 of the carrier plate 2 are clamped in the slot 7 of the rubber t uc hzy li nde rs 1 between the side surface 14 of the slot 7 and the pressure cam 18 (Fig. 2), with which the ends 3, 4 of the rubber do i n it 31 are securely fastened on the rubber door r 1.
  • the spring force and spring travel are dimensioned such that a secure clamping takes place.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Abstract

In a multi-layer rubber blanket intended for a rubber blanket cylinder and joined at its underside to a dimensionally stable support plate, the ends of the rubber blanket are to be insensitive to mechanical and chemical cleaning. This is achieved according to the invention by sealing the frontal faces of the layers situated underneath the covering layer of the rubber blanket at least at one end of the rubber blanket.

Description

Beschreibungdescription
Gummituch für eine DruckmaschineBlanket for a printing press
Die Erfindung betrifft ein Gummituch für eine Druckmaschine gemäß dem Oberbegriff des Anspruches 1.The invention relates to a blanket for a printing press according to the preamble of claim 1.
Durch die DE 43 20 464 A1 ist es bekannt, abgekantete vorlaufende und nachlaufend Enden eines auf eine Trägerplatte aufgebrachten Gummituches gemeinsam in einen Schlitz einzustecken. Hierbei ergibt sich zwischen den Biegelinien ein, sich in Richtung Schlitz verengender Raum. Um Schwingungen zu vermeiden wird dieser Raum stof f seh lüs s i g verfüllt.From DE 43 20 464 A1 it is known to jointly insert bent leading and trailing ends of a rubber blanket applied to a carrier plate into a slot. This results in a space narrowing in the direction of the slot between the bending lines. To avoid vibrations, this space is filled with liquid.
In der US-PS 25 25 003 wird eine aus einem Gummituch und einer Trägerplatte bestehenden Gummi tuche i nhe i t beschrieben. Die Gummi tuche i nhe i t ist mit zwei abgekanteten Enden versehen, an denen jewei ls ein abgekanteter Schenkel der Trägerplatte über Enden des Gummituches hinausragend angeordnet ist und das Gummituch auf der Trägerplatte jewei ls im Bereich einer die Schenkel begrenzenden Abkantung endet. Diese abgekanteten Schenkel werden in einen engen, ca. 6,5 mm breiten Schlitz eingeführt. Zwischen gegenüberliegenden Seitenflächen der beiden Schenkel wird ein Kei l angeordnet, womit jewei ls ein Schenkel gegen eine Seitenfläche des Schlitzes gepreßt wird. Die Gummi tue he i nhe i t wird somit mittels einer als Kei l ausgeführten Haltevorrichtung reibschlüssig im Schlitz ^ehalten.In US-PS 25 25 003 a rubber blanket consisting of a rubber blanket and a carrier plate is almost described. The rubber blanket is provided with two folded ends, on each of which a folded leg of the carrier plate projects beyond the ends of the rubber blanket and the rubber blanket on the carrier plate ends in the region of a bevel delimiting the legs. These chamfered legs are inserted into a narrow, approx. 6.5 mm wide slot. A wedge is arranged between opposite side faces of the two legs, whereby one leg is pressed against one side face of the slot. The rubber door is thus frictionally held in the slot by means of a holding device designed as a wedge.
Nachtei lig an dieser Gummi tuche i nhei t ist, daß beim Reinigen des Gummi tuchzy l i nde rs , z. B. mittels einer rotierenden Bürste, Waschflüssigkeit zwischen die beiden Enden des Gummituches der Gumm i tuchei nhei t dringt. In Verbindung mit der Bürstenrotation wird ein vorzeitiges Ablösen zumindest eines Endes des Gummituches he rbe i geführt .Nachtei lig on this rubber tuche i nhei t is that when cleaning the rubber tuchzy li nde rs, z. B. by means of a rotating brush, washing liquid between the two ends of the rubber blanket of rubber i tuchei nhei t penetrates. In connection with the brush rotation, an early Detaching at least one end of the rubber blanket is carried out.
Der Erfindung liegt die Aufgabe zugrunde, ein mehrlagiges Gummituch mit einer formstabi len Trägerplatte zu schaffen.The invention has for its object to provide a multi-layer rubber blanket with a form-stable len carrier plate.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des kennzeichnenden Tei les des Anspruches 1 gelöst.This object is achieved by the features of the characterizing part of claim 1.
Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß auch bei einer intensiven mechanischen und chemischen Reinigung am vorlaufendenThe advantages that can be achieved with the invention are, in particular, that even with intensive mechanical and chemical cleaning at the leading end
Ende des Gummituches kein Ablösen vom Gummituchträger bzw. von den weiteren Gummi t uch l agen erfolgt.At the end of the blanket, there is no detachment from the blanket carrier or from the other blanket layers.
Es ist nur notwendig, die Enden des Trägers zum Zwecke des Festhaltens des Gummituches auf denIt is only necessary to keep the ends of the carrier on the blanket for the purpose of holding the blanket
Gummi tuchzy l i nder in einen Schlitz zu stecken. Hierdurch wird der druckfreihe Raum klein.Insert rubber cloth cylinder into a slot. As a result, the pressure-free space becomes small.
Es ist weiterhin von Vortei l, daß eine Borstenwalze nicht unter die Decklage des Gummituches greifen kann.It is also of advantage that a bristle roller cannot reach under the cover layer of the rubber blanket.
Darüber hinaus kann keine Feucht- undIn addition, no damp and
Was c hmi tte l f lüs s i gkei t von der vorderen Stirnseite desWhat flows from the front face of the
Gummituchtes eindringen.Penetrate rubber blanket.
Die erfindungsgemäße Vorrichtung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.The device according to the invention is shown in the drawing and is described in more detail below.
Es zeigen Fig. 1 eine schematische Darstellung eines Querschnittes eines erfindungsgemäßen Gummituches auf einem Gummi tuc ht rage r, dessen eines abgewinkelte Ende aus einem Schlitz des Gummi tucht rägers herausgehoben wird;Show it Figure 1 is a schematic representation of a cross section of a rubber blanket according to the invention on a rubber tuc ht rage, one angled end of which is lifted out of a slot of the rubber blanket carrier;
Fig. 2 einen Schnitt durch eine vergrößerte schematische Darstellung beider Enden des auf dem Gummituchträger aufgebrachten erfindungsgemäßen Gummituches in einer weiteren Ausführungsform.Fig. 2 shows a section through an enlarged schematic representation of both ends of the blanket according to the invention applied to the blanket carrier in a further embodiment.
Ein Gummi tue hzy l i nde r 1 einer Rotationsdruckmaschine ist zur Aufnahme von Gummi tue he i nhe i ten 31 mit abgekanteten Enden 3, 4 mit mindestens einem parallel zu seiner Drehachse verlaufenden, sich von einer Mantelfläche 6 des Gummi t uchzy l i nde rs 1 in sein Inneres 5 erstreckenden, engen Schlitz 7 versehen.A rubber door cylinder 1 of a rotary printing machine is for receiving rubber door parts 31 with bent ends 3, 4 with at least one parallel to its axis of rotation and extending from a lateral surface 6 of the rubber cylinder 1 provided in its interior 5 extending narrow slot 7.
Die Gummi tue hei nhe i t 31 besteht aus einer weitgehend formstabi len, biegsamen Trägerplatte 2, z. B. einer Metallplatte, mit einer Dicke d2, z. B. d2 = 0,3 mm, und einem darauf befestigten, z. B. aufgeklebten oder aufvu l kani s i e rten, mehrlagigem Gummituch 32.The rubber tue hei nhe i t 31 consists of a largely dimensionally stable, flexible support plate 2, z. B. a metal plate with a thickness d2, z. B. d2 = 0.3 mm, and an attached, z. B. glued or aufvu l kani s i e rten, multi-layer rubber blanket 32nd
Ein abgekanteter Schenkel 8 am vorlaufenden Ende 3 ist im vorliegenden Beispiel länger als ein entsprechender abgekanteter Schenkel 9 am nachlaufenden Ende 4 der Trägerplatte 2. Das Gummituch 32 besteht aus mehreren Lagen als Verbund, z. B. einer Decklage 42, einer Gewebelage 43, einer Klebelage 44, einer Ve rstä rkungs läge 45, einer kompressiblen Lage 46 mit geschlossenen Hohlräumen, einer Ve rstärkungs Lage 47 sowie einer mit der Trägerplatte 2 verbundenen weiteren Verstä rkungs Lage 48 (Fig. 2) . Diese Lagen 42 bis 48 sind z. B. durch Kleben oder Vulkanisieren stof fsc h lüss i g miteinander verbunden.A folded leg 8 at the leading end 3 is longer in the present example than a corresponding bent leg 9 at the trailing end 4 of the carrier plate 2. The rubber blanket 32 consists of several Layers as a composite, e.g. B. a top layer 42, a fabric layer 43, an adhesive layer 44, a reinforcement layer 45, a compressible layer 46 with closed cavities, a reinforcement layer 47 and a further reinforcement layer 48 connected to the carrier plate 2 (FIG. 2 ). These layers 42 to 48 are e.g. B. connected by gluing or vulcanizing fabric f ig h ig.
Zumindest die Decklage 42 des Gummituches 32 steht über die darunterliegenden Lagen 43 bis 48 hinaus und ist um sie herumgelegt, so daß ihre Unterseite an Stirnflächen 43a bis 48a der restlichen Gummi tue h lagen 43 bis 48 anliegt und an diesen s tof f s ch lüs s i g befestigt ist; z. B. durch Kleben oder Vulkanisieren.At least the top layer 42 of the rubber blanket 32 stands over the layers 43 to 48 underneath and is placed around them, so that their underside lies against end faces 43a to 48a of the remaining rubber layers 43 to 48 and is connected to these materials is attached; z. B. by gluing or vulcanizing.
Somit erfolgt ein Versiegeln der Stirnflächen 43a bis 48a zumindest eines Endes, insbesondere des vorlaufenden Endes des Gummituches 32. Es ist möglich, auch das zweite Ende 4 des Gummituches 32 so zu versiegeln.The end faces 43a to 48a of at least one end, in particular the leading end of the rubber blanket 32, are thus sealed. It is also possible to seal the second end 4 of the rubber blanket 32 in this way.
Nach einer anderen Aus füh rungsva ri ante kann zusätzlich noch die Stirnfläche 42a der Decklage 42 mit der Trägerplatte 2 s tof f s c h lüs s i g verbunden sein.According to another embodiment variant, the end face 42a of the top layer 42 can additionally be connected to the carrier plate 2 s tof f s c h lüs s i g.
Nach einer weiteren Aus füh rungsva ri ante ist es auch möglich, daß eine Versiegelung auch dadurch erfolgt, daß die Decklage 42 des Gummituches umgebogen und nur die Stirnfläche 42a der Decklage 42 mit der Trägerplatte 2 stoff s c h L üs s i g verbunden ist. Die von der Decklage 42 überdeckten Stirnflächen 43a bis 48a und die da runt e rbe f i nd l i chen Lagen 43 bis 48 können in der Höhe der Lagen 43, 44 des vorlaufenden Endes 3 des Gummituches 32 als ein sich in achsparalleler Richtung des Gummi tuchzy l i nde rs 1 erstreckender überhängender Vorsprung 49 ausgebi ldet sein. Dieser Vorsprung 49 wirkt mit einer sich auf dem nachlaufenden Ende 4 des Gummituches 32 in Höhe der Lagen 44 bis 48 ebenfalls in ac hspa ra 11e le r Richtung verlaufenden Schräge 51 zusammen. Der Vorsprung 49 bzw. die Schräge 51 werden dadurch gebi ldet, daß die Lagen 43 bis 48 zur Trägerplatte 2 hin gestuft kürzer werden (Vorsprung 49) bzw. die Lagen 48 bis 44 von der Trägerplatte 2 nach außen hin gestuft kürzer werden (Schräge 51). Somit wird beim Aufspannen der Gummi tuc he i nhe i t 31 auf den Gumm i tuchzy l i nde r 1 ein sehr enger Spalt des Gummituches 32 erzielt, welcher an seinen Stirnflächen versiegelt ist.According to a further embodiment, it is also possible that sealing is also effected in that the cover layer 42 of the rubber blanket is bent over and only the end face 42a of the cover layer 42 is connected to the carrier plate 2 by a material connection. The end faces 43a to 48a covered by the cover layer 42 and the layers 43 to 48 which are located there can be at the height of the layers 43, 44 of the leading end 3 of the rubber blanket 32 as a cloth sheet in the axially parallel direction of the rubber sheet The overhanging protrusion 49 extending over 1 is formed. This projection 49 interacts with a slope 51 running on the trailing end 4 of the rubber blanket 32 at the height of the layers 44 to 48, also in ac hspa ra 11e le r direction. The projection 49 and the bevel 51 are formed by the layers 43 to 48 being stepped shorter towards the support plate 2 (projection 49) and the layers 48 to 44 being stepped shorter towards the outside from the support plate 2 (bevel 51 ). Thus, when the rubber sheet 31 is stretched onto the rubber sheet cylinder 1, a very narrow gap of the rubber sheet 32 is achieved, which is sealed on its end faces.
Es ist auch möglich, außer der Decklage 42 noch eine weitere Lage 43 länger auszubi lden und diese Lagen 42, 43 über die Stirnflächen 44a bis 48a der darunter befindlichen Lagen zu führen und in der oben beschriebenen Weise zu befestigen.It is also possible, in addition to the top layer 42, to form a further layer 43 longer and to guide these layers 42, 43 over the end faces 44a to 48a of the layers below and to fasten them in the manner described above.
Das Gummituch 32 ist derart auf der Trägerplatte 2 befestigt, daß die beiden Schenkel 8, 9 der Trägerplatte 2 an den abgekanteten Enden 3, 4 der Gummi tuche i nhe i t 31 frei vom Gummituch 32 sind und somit nur die beiden Schenkel 8, 9 der Trägerplatte 2 in den Schlitz 7 ragen.The rubber blanket 32 is fastened on the carrier plate 2 in such a way that the two legs 8, 9 of the carrier plate 2 at the bent ends 3, 4 of the rubber cloth i nhe it 31st are free of the rubber blanket 32 and thus only the two legs 8, 9 of the carrier plate 2 protrude into the slot 7.
Der Schlitz 7 ist im Querschnitt vorzugsweise rechteckig ausgebi ldet. Eine Breite b7 des Querschnittes des Schlitzes 7 weist an seinem Anfang 10 etwas mehr als die doppelte Dicke d2 der Trägerplatte 2 der Gummi tuche i nhei t 31 auf, d.h. beispielsweise b7 = 1 mm. Der Schlitz 7 ist bezüglich einer an der Mantelfläche 6 im Bereich des Schlitzes 7 anliegenden Tangente 11 um einen Neigungswinkel Alpha, z. B. Alpha = 45°, geneigt. Am Ende des Schlitzes 7 ist eine parallel zu dem Schlitz 7 verlaufende Bohrung 12 in dem Gummi tuchzy l i nder 1 angebracht. Der Schlitz 7 tangiert die Bohrung 12 in Form einer Sehne, so daß die Bohrung 12 mit dem Schlitz 7 in Verbindung steht. Im vorliegenden Beispiel befindet sich eine vi rtuelle Fortsetzung einer Mantelfläche 13 der Bohrung 12 in einem Abstand a zu einer der Bohrung 12 abgewandten Seitenfläche 14 des Schlitzes 7, wobei der Abstand a geringfügig größer ist als die Dicke d2 der Trägerplatte 2, z. B. a - 0,4 mm.The slot 7 is preferably rectangular in cross section. A width b7 of the cross section of the slot 7 has at its beginning 10 slightly more than twice the thickness d2 of the carrier plate 2 of the rubber sheet 31, i.e. for example b7 = 1 mm. The slot 7 is with respect to a tangent 11 on the lateral surface 6 in the area of the slot 7 by an angle of inclination alpha, z. B. Alpha = 45 °. At the end of the slot 7, a bore 12 running parallel to the slot 7 is made in the rubber cloth cylinder 1. The slot 7 tangent to the bore 12 in the form of a chord, so that the bore 12 is connected to the slot 7. In the present example, there is a continuation of a lateral surface 13 of the bore 12 at a distance a from a side surface 14 of the slot 7 facing away from the bore 12, the distance a being slightly greater than the thickness d2 of the carrier plate 2, for. B. a - 0.4 mm.
In dieser Bohrung 12 ist ein Schwenkhebel 16, der im vorliegenden Ausführungsbeispiel als eine Spindel 16 mit einem Radius r16, z. B. r16 = 15 mm, ausgeführt ist, schwenkbar zentrisch gelagert. Diese Spindel 16 ist in axialer Richtung mit mehreren von radial nach außen wirkenden Druckstücken 17 versehen. Die Druckstücke 17 sind so in der Spindel 16 befestigt, daß deren Drucknocken 18 über eine Mantelfläche 19 der Spindel 16 hinaus federnd wi rken können. Im dargestellten Beispiei sind die Drucknocken 18 an ihrem äußeren Ende mit einer Kugelkuppe versehen, aber es sind auch zy l i nde rsegment fö rmi ge Ausgestaltungen möglich, so daß sich für jeden Drucknocken 18 beispielsweise eine linienförmige Berührzone ergibt. Von dem Bereich der Spindel 16 ausgehend, in dem die Druckstücke 17 angeordnet sind, weist die Mantelfläche 19 der Spindel 16 über einen Winkel Beta, z.B. Beta = 80°, bezogen auf eine Längsachse 21 der Spindel 16 eine Mantelfläche 22 mit reduziertem Radius r22, z. B. r22 = 14,5 mm, auf. Daran schließt sich im vorliegenden Beispiel ein Bereich an, der sich über einen Winkel Gamma, z. B. Gamma = 90°, erstreckt, in dem diese reduzierte Mantelfläche 22 in axialer Richtung gesehen nur partiell als in Umfangsrichtung verlaufende U-förmige Nuten 23 ausgeführt ist. Am Ende dieser U-förmigen Nuten 23 ist ein axial verlaufender, sich radial von der Mantelfläche 19 in ein Inneres der Spindel 16 erstreckender Schlitz 24 eingebracht. In diesem Schlitz 24 sind Enden 26 von biegeelastischen, aber drucksteifen Aushebern 27 eingehängt, die im vorliegenden Beispiel als Blattfedern ausgeführt sind. Diese Ausheber 27 passen sich im eingebauten Zustand der Form der Spindel 16 an. Die Ausheber 27 erstrecken sich über eine Länge 127, z. B. 127 = 25 mm (nicht dargestellt), bis an den Bereich der reduzierten Mantelfläche 22 der Spindel 16 und weisen eine Dicke d27, z. B. d27 = 0,5 mm, auf. Die Funktionsweise der erfindungsgemäßen Vorrichtung ist fo Igendermaßen :In this bore 12 is a pivot lever 16, which in the present embodiment as a spindle 16 with a radius r16, z. B. r16 = 15 mm, is pivotally mounted centrally. This spindle 16 is provided in the axial direction with a plurality of pressure pieces 17 acting radially outwards. The pressure pieces 17 are fastened in the spindle 16 in such a way that their pressure cams 18 have an outer surface 19 of the spindle 16 can work springily. In the example shown, the pressure cams 18 are provided at their outer end with a ball dome, but there are also zy li nde rsegment fö rmi ge configurations possible, so that there is, for example, a linear contact zone for each pressure cam 18. Starting from the area of the spindle 16 in which the pressure pieces 17 are arranged, the outer surface 19 of the spindle 16 has an outer surface 22 with a reduced radius r22 over an angle Beta, for example Beta = 80 °, with respect to a longitudinal axis 21 of the spindle 16, e.g. B. r22 = 14.5 mm. This is followed by a range in the present example, which is an angle gamma, z. B. Gamma = 90 °, extends in which this reduced lateral surface 22 is only partially seen in the axial direction as a circumferential U-shaped grooves 23. At the end of these U-shaped grooves 23, an axially extending slot 24, which extends radially from the lateral surface 19 into an interior of the spindle 16, is introduced. In this slot 24 ends 26 of flexible, but pressure-resistant lifters 27 are suspended, which in the present example are designed as leaf springs. In the installed state, these lifters 27 adapt to the shape of the spindle 16. The lifters 27 extend over a length 127, z. B. 127 = 25 mm (not shown), up to the area of the reduced lateral surface 22 of the spindle 16 and have a thickness d27, z. B. d27 = 0.5 mm. The mode of operation of the device according to the invention is as follows:
In einer Einführstellung der Spindel 16 befindet sich die reduzierte Mantelfläche 22 der Spindel 16 im Bereich des Schlitzes 7. In dieser Stellung werden die beiden abgekanteten Schenkel 8, 9 der Trägerplatte 2 der Enden 3, 4 der Gummi tuche i nhe i t 31 in den Schlitz 7 geführt, wobei die reduzierte Mantelfläche 22 als Führung dient. Die abgekanteten Enden 3, 4 der Gummi tuchei nhei t 31 sind auf den Neigungswinkel Alpha des Schlitzes 7 angepaßt. Bei eingeführter Gummi tuche i nhei t 31 liegen die kein Gummituch 32 aufweisenden Schenkel 8, 9 der Trägerplatte 2 der Gummi t uc he i nhe i t 31 mit ihren aufeinander zuweisenden Seitenflächen 33, 34 direkt aneinander an. Das Gummituch 32 reicht sowohl beim vorlaufenden Ende 3 als auch beim nachlaufenden Ende 4 bis zu dem die Mantelfläche 6 des Gummi tue hzy l i nde rs 1 unterbrechenden Schlitz 7, d.h. das Gummituch 32 endet auf der Trägerplatte 2 jewei ls im Bereich einer Abkantung 36, 37 der Schenkel 8, 9. Somit bi lden sich gegenüberliegende Enden 38, 39 des Gummituches 32 einen schmalen Spalt 41 mit einer Breite b41, z. B. b41 = 0,3 mm. Im vorliegend Beispiel ist das Gummituch 32 am vorlaufenden Ende 3 etwas um Abkantung 36 herumgezogen, aber ohne an dem Schenkel 9 der Trägerplatte 2 des nachlaufenden Endes 4 anzuliegen.In an insertion position of the spindle 16, the reduced lateral surface 22 of the spindle 16 is in the area of the slot 7. In this position, the two bent legs 8, 9 of the carrier plate 2 of the ends 3, 4 of the rubber sheet 31 are inserted into the slot 7 guided, the reduced lateral surface 22 serving as a guide. The folded ends 3, 4 of the rubber tuchei nhei t 31 are adapted to the angle of inclination alpha of the slot 7. When the rubber sheet 31 is inserted, the legs 8, 9 of the carrier plate 2 of the carrier sheet 2, which do not have the rubber sheet 32, rest directly against one another with their mutually facing side surfaces 33, 34. The rubber blanket 32 extends both at the leading end 3 and at the trailing end 4 to the slot 7 interrupting the lateral surface 6 of the rubber door cylinder 1, i.e. the rubber blanket 32 ends on the carrier plate 2 in the region of a fold 36, 37 of the legs 8, 9. Thus, opposite ends 38, 39 of the rubber blanket 32 form a narrow gap 41 with a width b41, z. B. b41 = 0.3 mm. In the present example, the rubber blanket 32 is pulled a little around the bevel 36 at the leading end 3, but without abutting the leg 9 of the carrier plate 2 of the trailing end 4.
Zum Klemmen der Enden 3, 4 der Gummi tuchei nhei t 31 wird die Spindel 16 entgegen dem Uhrzeigersinn soweit gedreht, bis die Druckstücke 17 annähernd lotrecht gerichtet bezüglich der Schenkel 8, 9 der Trägerplatte 2 stehen. Die Drucknocken 18 der Druckstücke 17 werden mittels sich an der Spindel 16 abstützende Federkraft gegen die Schenkel 8, 9 der Trägerplatte 2 gepreßt. Somit sind die Schenkel 8, 9 der Trägerplatte 2 im Schlitz 7 des Gummi t uc hzy l i nde rs 1 zwischen der Seitenfläche 14 des Schlitzes 7 und den Drucknocken 18 eingeklemmt (Fig. 2), womit die Enden 3, 4 der Gummi tue he i nhe i t 31 sicher auf dem Gummi tue hzy l i nde r 1 befestigt sind. Hierbei sind Federkraft und Federweg derart bemessen, daß eine sichere Klemmung erfolgt. Durch das Drehen der Spindel 16 entgegen dem Uhrzeigersinn, d.h. mit den wirkenden Drucknocken 18 in Richtung Inneres des Gummi tuchzy l i nde rs 1, erfolgt mittels einer nach innen wirkenden Zugkraft ein Straffen der Enden 3, 4. In dieser Klemmstellung wird die Spindel 16 arretiert. Zum Entfernen der Gummi t uche i nhe i t 31 wi rd die SpindelTo clamp the ends 3, 4 of the rubber tuchei nhei t 31, the spindle 16 is rotated counterclockwise until the pressure pieces 17 almost perpendicular are directed with respect to the legs 8, 9 of the support plate 2. The pressure cams 18 of the pressure pieces 17 are pressed against the legs 8, 9 of the carrier plate 2 by means of spring force which is supported on the spindle 16. Thus, the legs 8, 9 of the carrier plate 2 are clamped in the slot 7 of the rubber t uc hzy li nde rs 1 between the side surface 14 of the slot 7 and the pressure cam 18 (Fig. 2), with which the ends 3, 4 of the rubber do i n it 31 are securely fastened on the rubber door r 1. The spring force and spring travel are dimensioned such that a secure clamping takes place. By turning the spindle 16 counterclockwise, ie with the acting pressure cams 18 towards the inside of the rubber cloth cylinder 1, the ends 3, 4 are tightened by means of an inward tensile force. In this clamping position, the spindle 16 is locked . The spindle is removed to remove the rubber wipe at 31 and
16 im Uhrzeigersinn gedreht, worauf die Druckstücke 17 die Schenkel 8, 9 freigeben. Die Druckstücke 17 werden in die Bohrung 12 geführt, in der sich die Druckstücke16 rotated clockwise, whereupon the pressure pieces 17 release the legs 8, 9. The pressure pieces 17 are guided into the bore 12, in which the pressure pieces
17 an der Mantelfläche 13 der Bohrung 12 abstützen. Durch die Drehbewegung der Spindel 16 gelangen nun Enden 28 der Ausheber 27 in den Bereich des Schenkels 9 des nachlaufenden Endes 4 der Gummi tuchei nhe i t 31 und stoßen gegen eine Stirnseite 29 des Schenkels 9 des nachlaufenden Endes 4. Im Verlauf der weiteren Drehbewegung federn die Ausheber 27 nach außen in ihre Strecklage, so daß die Ausheber 27 tangential bezüglich der Spindel 16 stehen und im Schlitz 7 verlaufen. Die Spindel 16 wird soweit verdreht bis die Enden 28 der Ausheber 27 kurz unter der Mantelfläche 6 des Gummi tue hzy l i nders 1 stehen. Das nachlaufende Ende 4 der Gumm i t uche i nhe i t 31 ist mittels der Ausheber 27 vollständig aus dem Schlitz 7 entfernt und kann durch die Eigenspannung der Gummi tue he i nhe i t 31 von der Mantelfläche 6 des Gummi tue hzy l i nde rs 1 wegfedern.Support 17 on the outer surface 13 of the bore 12. Due to the rotational movement of the spindle 16 ends 28 of the lifter 27 now come into the region of the leg 9 of the trailing end 4 of the rubber cloth 31 and abut against an end face 29 of the leg 9 of the trailing end 4. During the further rotational movement, the springs spring Lifter 27 outwards into its extended position, so that lifter 27 is tangential with respect to the spindle 16 stand and run in the slot 7. The spindle 16 is rotated until the ends 28 of the lifters 27 are just below the outer surface 6 of the rubber hose 1. The trailing end 4 of the rubber sleeve 31 is completely removed from the slot 7 by means of the lifter 27 and can spring away from the lateral surface 6 of the rubber sleeve 1 due to the inherent tension of the rubber sleeve 31.
Anstelle der mit einer auf die Drucknocken 18 wirkenden Druckfeder versehenen Druckstücke 17 können auch beispielsweise in Umfangsrichtung angeordnete, vorgespannte Blattfedern, die über die Mantelfläche 19 der Spindel 16 hinausragen, angeordnet sein. Instead of the pressure pieces 17 provided with a compression spring acting on the pressure cams 18, it is also possible, for example, to arrange preloaded leaf springs arranged in the circumferential direction, which protrude beyond the lateral surface 19 of the spindle 16.
Tei le l i st eParts
1 Gumm i zy l i nde r1 rubber cylinder
2 Trägerplatte2 carrier plate
3 Ende, vorlaufendes (32)3 end, leading (32)
4 Ende, nachlaufendes (32)4 trailing end (32)
5 Inneres ( 1 )5 interior (1)
6 Mantelfläche (1 )6 lateral surface (1)
7 Schlitz (1)7 slot (1)
8 Schenkel (3)8 legs (3)
9 Schenkel (4)9 legs (4)
10 Anfang (7 )10 beginning (7)
11 Tangente11 tangent
12 Bohrung ( 1 )12 hole (1)
13 Mantelfläche (12)13 outer surface (12)
14 Sei tenf lache (7)14 pool of ten (7)
1515
16 Spi nde l16 spin l
17 Druckstück17 pressure piece
18 Drucknocken18 pressure cams
19 Mantelfläche (16)19 lateral surface (16)
2020th
21 Längsachse (16)21 longitudinal axis (16)
22 Mantelfläche (16), reduziert22 lateral surface (16), reduced
23 Nut (16), U-förmig23 groove (16), U-shaped
24 Schlitz (16)24 slot (16)
2525
26 Ende (27)26 end (27)
27 Ausheber Ende (28) Sti rnseite (4)27 lifters End (28) end face (4)
Gummi tue he i nhe i t (31) Gummi t uc h Sei tenf lache (8) Sei tenf lache (9)Rubber do he i nhe i t (31) Rubber t uc h Be tenfache (8) Be tenfache (9)
Abkantung (8) Abkantung (9) Ende (32) Ende (32)Bevel (8) bevel (9) end (32) end (32)
Spalt (38; 39) Decklage (32) a Stirnfläche (42), offene Gewebe läge (32) a Stirnfläche (43), offene Klebelage (32) a Sti rnfläche (44), offene Ve rs t ä rkungs l age (32) a Stirnfläche (45), offene Lage, kompressibel (32) a Sti rnfläche (46), offene Verstärkungs lage (32) a Stirnfläche (47), offene Ve rst ä rkung s l age (32) a Stirnfläche (48), offene Vors prung (3) 50 -Gap (38; 39) top layer (32) a front surface (42), open fabric layer (32) a front surface (43), open adhesive layer (32) a front surface (44), open reinforcement layer (32 ) a front surface (45), open position, compressible (32) a front surface (46), open reinforcement layer (32) a front surface (47), open reinforcement slage (32) a front surface (48), open Projection (3) 50 -
51 Schräge (4)51 slope (4)
a Abstand zwischen Mantelfläche (19) und Seitenfläche (14)a distance between lateral surface (19) and side surface (14)
b7 Breite des Schlitzes (7)b7 width of the slot (7)
d2 Dicke der Platte (2) d27 Dicke des Aushebers (27)d2 thickness of the plate (2) d27 thickness of the lifter (27)
r16 Radius r22 Radiusr16 radius r22 radius
Alpha Neigungswinkel Beta Winkel Gamma Winkel Alpha tilt angle Beta angle Gamma angle

Claims

Ansprüche Expectations
1. Mehrlagiges Gummituch für einen Gummi tue hzy l i nde r (1) einer Druckmaschine, welches an seiner Unterseite mit einer formstabilen Trägerplatte (2) stof f sc h lüss i g verbunden ist und mindestens ein Ende (8, 9) der Trägerplatte (2) jewei ls über eine offene vordere Stirnfläche (42a bis 48a) des Gummituches (32) hinausragt, dadurch gekennzeichnet, daß die vorderen Sti rnflächen (43a bis 48a) von unter einer Decklage (42) weiterhin befindlichen Lagen (43 bis 48) des Gummituches (32) mindestens eines Endes (3) des Gummituches (32) versiegelt sind.1.Multi-layer rubber blanket for a rubber printing cylinder (1) of a printing press, which is connected on its underside with a dimensionally stable support plate (2), and at least one end (8, 9) of the support plate (2 ) protrudes beyond an open front end face (42a to 48a) of the rubber blanket (32), characterized in that the front face faces (43a to 48a) of layers (43 to 48) of the rubber blanket which are still located under a cover layer (42) (32) at least one end (3) of the rubber blanket (32) are sealed.
2. Gummituch nach Anspruch 1, dadurch gekennzeichnet, daß die Decklage (42) des Gummituches (32) umgebogen an den Sti rnflächen (43a bis 48a) der restlichen Lagen (43 bis 48) des Gummituches (32) s tof f s ch lüs s i g befestigt ist.2. rubber blanket according to claim 1, characterized in that the cover layer (42) of the rubber blanket (32) bent on the sti rnflächen (43a to 48a) of the remaining layers (43 to 48) of the rubber blanket (32) s tof fs ch lüs sig is attached.
3. Gummituch nach Anspruch 2, dadurch gekennzeichnet, daß zusätzlich die Stirnfläche (42a) mindestens der Decklage (42) mit der Trägerplatte (2) s tof f s c h lüs s i g verbunden ist.3. blanket according to claim 2, characterized in that in addition the end face (42 a) at least the top layer (42) with the carrier plate (2) s tof f s c h lüs s i g is connected.
4. Gummituch nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die aus den Stirnflächen (43a bis 48a) der Enden (3, 4) des Gummituches (32) ragenden Enden (8, 9) der Trägerplatte (2) abgekantet sind. 4. rubber blanket according to claims 1 to 3, characterized in that from the end faces (43a to 48a) of the ends (3, 4) of the rubber blanket (32) projecting ends (8, 9) of the carrier plate (2) are folded.
5. Gummituch nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß die aus den Stirnflächen (43a bis 48a) der Enden (3, 4) des Gummituches (32) ragenden Enden (8, 9) der Trägerplatte (2) abgekantet sind. 5. rubber blanket according to claims 1 to 4, characterized in that from the end faces (43a to 48a) of the ends (3, 4) of the rubber blanket (32) projecting ends (8, 9) of the carrier plate (2) are folded.
EP96945728A 1995-11-23 1996-11-16 Rubber blanket for a printing machine Expired - Lifetime EP0862519B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19543584A DE19543584C1 (en) 1995-11-23 1995-11-23 Blanket for a printing press
DE19543584 1995-11-23
PCT/DE1996/002185 WO1997018954A2 (en) 1995-11-23 1996-11-16 Rubber blanket for a printing machine

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Publication Number Publication Date
EP0862519A2 true EP0862519A2 (en) 1998-09-09
EP0862519B1 EP0862519B1 (en) 2000-09-20

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EP96945728A Expired - Lifetime EP0862519B1 (en) 1995-11-23 1996-11-16 Rubber blanket for a printing machine

Country Status (7)

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US (1) US5934194A (en)
EP (1) EP0862519B1 (en)
JP (1) JP3034610B2 (en)
CN (1) CN1077049C (en)
DE (2) DE19543584C1 (en)
HK (1) HK1016939A1 (en)
WO (1) WO1997018954A2 (en)

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Publication number Publication date
DE19543584C1 (en) 1997-07-24
WO1997018954A3 (en) 1997-07-31
EP0862519B1 (en) 2000-09-20
DE59605927D1 (en) 2000-10-26
JP3034610B2 (en) 2000-04-17
WO1997018954A2 (en) 1997-05-29
HK1016939A1 (en) 1999-11-12
US5934194A (en) 1999-08-10
CN1077049C (en) 2002-01-02
JPH11501591A (en) 1999-02-09
CN1202857A (en) 1998-12-23

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