EP2361763A1 - Rail de fixation pour blanchets - Google Patents

Rail de fixation pour blanchets Download PDF

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Publication number
EP2361763A1
EP2361763A1 EP10154007A EP10154007A EP2361763A1 EP 2361763 A1 EP2361763 A1 EP 2361763A1 EP 10154007 A EP10154007 A EP 10154007A EP 10154007 A EP10154007 A EP 10154007A EP 2361763 A1 EP2361763 A1 EP 2361763A1
Authority
EP
European Patent Office
Prior art keywords
holding
blanket
retaining
rail
legs
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.)
Withdrawn
Application number
EP10154007A
Other languages
German (de)
English (en)
Inventor
Timo Bisinger
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.)
PGI GmbH
Original Assignee
PGI GmbH
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 PGI GmbH filed Critical PGI GmbH
Priority to EP10154007A priority Critical patent/EP2361763A1/fr
Publication of EP2361763A1 publication Critical patent/EP2361763A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a blanket-holding rail for releasably securing a blanket to a printing unit roller, with two interconnected via a vertex portion of the support rail retaining legs, between which the blanket is clamped, wherein the retaining leg on their mutually facing surfaces each having a plurality of holding elements, the rise above the surface of the respective retaining leg.
  • Such support rails are used in the field of offset printing to open a usually multi-layer blanket on a printing-unit roller.
  • the blanket support rails available on the market generally have punched-out and form-bent Zwick or claw elements, which are arranged in spaced-apart groups on the support rails and engage in the blanket such that the risk of injury to secure hold of the blanket or a perforation of the blanket is given, whereby a marginal ripping of the blanket from the retaining rail is favored.
  • the object of the invention is to provide a blanket-holding rail of the type mentioned, which allows a gentler and at the same time effective clamping a blanket.
  • the holding elements are arranged one after the other along the two holding limbs in each case at a regular spacing from one another.
  • the blanket can be clamped evenly between the two holding legs of the blanket support rail, which shear stresses the blanket avoided and the risk of tearing of the blanket is reduced.
  • the holding elements are formed according to a preferred embodiment of the invention as the apex region of the blanket-holding rail facing retaining tongues having an at least partially curved and / or folded back.
  • the retaining tongues have an edge portion facing the edge region with a back arranged substantially parallel to the respective retaining leg.
  • the retaining tongues can slide on the blanket support rail in the manner of a skid, with penetration of the retaining tongues into the blanket or into a multilayer material composite of the blanket being effectively avoided.
  • the retaining elements have at least one, preferably burr-free or blunt, retaining edge.
  • the blanket-holding rail with different thickness blankets or blankets with particularly vulnerable surface that the holding elements against a predetermined, preferably orthogonal acting on the respective associated holding leg, force elastically deformable are.
  • the holding elements yield when a defined contact force against the blanket is exceeded, so that pinch injuries or perforations of the blanket can be reliably prevented.
  • the holding elements of the two holding legs are preferably arranged in the clamping position of the blanket-holding rail along the holding leg with an offset to each other, wherein the holding elements of the two holding legs are arranged in the clamping position of the blanket-holding rail advantageously in a common plane.
  • the holding legs each have at least two rows of holding elements, which are arranged to each other along the holding leg with an offset.
  • the retaining tabs in the clamping position of the blanket-retaining rail opposite surface portion of the respective other clamping leg is preferably carried out flat.
  • the holding legs each have a substantially planar surface between the individual holding elements.
  • the holding elements are formed by forming, preferably by deep drawing or free punching and bending of the form, the clamping rail.
  • the Blanket-retaining rails are manufactured in this way in a few manufacturing steps in a cost effective manner.
  • the blanket retaining rails are preferably made of steel or a metal alloy, in particular a light metal alloy.
  • FIG. 1 is a selected section of a generally designated 10 blanket support rail according to the invention reproduced.
  • the blanket holding rail 10 is used for releasably securing and clamping a blanket not shown in detail in the figure on a printing-unit roller of an offset printing press.
  • the blanket retaining rail 10 is formed as an angle profile and has two interconnected via a vertex portion 12 retaining legs 14, 14 ' .
  • the holding legs 14, 14 ' can be bent against each other by means of a suitable tool and a between the holding legs 14, 14' guided blanket so between the two retaining legs 14, 14 'are clamped.
  • the holding legs 14, 14 ' have on their mutually facing surfaces 16, 16' in each case a plurality of holding tongues 18, 18 " , which over the surface 16, 16 'of the respective holding leg 14, 14' in the direction of the oppositely arranged holding leg 14th , 14 'rise and the top portion 12 of the blanket-retaining rail 10 assign.
  • the holding tongues 18, 18 ' are arranged along the two holding legs 14, 14', each lined up in two mutually parallel rows 20, 20 " with each other regularly spaced one behind the other.
  • the retaining tongues 18, 18 'of the two rows 20, 20' of a retaining leg 14, 14 ' are arranged along the retaining leg 14, 14' to each other with an offset, wherein the retaining tongues 18, 18 'of the mutually corresponding rows 20, 20th 'of retaining tabs 18, 18' of the two holding legs 14, 14 'along the holding legs 14, 14' are arranged to each other with an offset and in the clamping position (not shown) of the blanket-holding rail 10 lie in a respective common plane.
  • the mutually associated holding tongues 18, 18 'of the two holding legs 14, 14' mutually engage.
  • the retaining tongues 18, 18 ' are resiliently connected to the respective retaining leg 14, 14' due to the elasticity inherent in the material of the blanket retaining rail. arranged and can be against a predetermined force elastically deformed in the direction of the respective holding leg 14, 14 ', that is bent, are.
  • the holding tongues 18, 18 'each have a generally curved back 22, 22' with a blunt middle fold 24, 24 ' .
  • the curved back 22 is arranged in the region of an edge section 26 of the holding tongue 18 (facing the apex section of the blanket holding rail) substantially parallel to the surface 16 of the holding leg 14 arranged below in FIG.
  • the retaining tongue 18 also has two side edges 28 , of which, however, only one is shown in the Fig. Due to the representation.
  • the side edges 28 form with the curved back 22 of the retaining tongue 18 each have a burr-free retaining edge 30 .
  • the retaining tongues 18 ' are formed in a manner corresponding to the retaining tabs 18 explained above.
  • the blanket-holding rail 10 is made entirely of a steel sheet ( Fig. 1 ), wherein the holding tongues 18, 18 'are made essentially by free punching and bending of the steel sheet.

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  • Printing Plates And Materials Therefor (AREA)
EP10154007A 2010-02-18 2010-02-18 Rail de fixation pour blanchets Withdrawn EP2361763A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10154007A EP2361763A1 (fr) 2010-02-18 2010-02-18 Rail de fixation pour blanchets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10154007A EP2361763A1 (fr) 2010-02-18 2010-02-18 Rail de fixation pour blanchets

Publications (1)

Publication Number Publication Date
EP2361763A1 true EP2361763A1 (fr) 2011-08-31

Family

ID=42319552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10154007A Withdrawn EP2361763A1 (fr) 2010-02-18 2010-02-18 Rail de fixation pour blanchets

Country Status (1)

Country Link
EP (1) EP2361763A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883940A (en) * 1973-04-09 1975-05-20 Dayco Corp Apparatus for fastening a holding bar on a printing blanket
DE7820773U1 (de) * 1978-07-11 1978-10-26 Georg Gernhard Druckbedarf Ohg, 6000 Frankfurt Gummidrucktuchschiene
USH440H (en) * 1986-06-30 1988-03-01 W. R. Grace & Co. Blanket bar for narrow gap cylinders
DE202007010077U1 (de) * 2007-07-09 2007-09-20 Früh Schnellbautechnik GmbH Drucktuch-Halteschiene

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883940A (en) * 1973-04-09 1975-05-20 Dayco Corp Apparatus for fastening a holding bar on a printing blanket
DE7820773U1 (de) * 1978-07-11 1978-10-26 Georg Gernhard Druckbedarf Ohg, 6000 Frankfurt Gummidrucktuchschiene
USH440H (en) * 1986-06-30 1988-03-01 W. R. Grace & Co. Blanket bar for narrow gap cylinders
DE202007010077U1 (de) * 2007-07-09 2007-09-20 Früh Schnellbautechnik GmbH Drucktuch-Halteschiene

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