QM2 Plate moving during run

Discussion in '1-Color and 2-Color Offset Presses' started by Peter The Pressman, Jul 17, 2014.

  1. Peter The Pressman

    Peter The Pressman New Member

    Joined:
    Jul 2014
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    Location:
    Brantford Ontario Canada
    I run a Heidelberg Printmaster QM2. Great press. When I run a 2-colour tight fit job I notice that the plate on the PU2 head moves away from the gripper edge very slowly during the run, and I have to keep adjusting it forward slightly to keep the fit.

    I suspect the plate is moving out of the clamp a bit, and perhaps loosening at both ends (both clamps).

    Anyone experience this and find a solution to share?

    Thanks!
     
  2. mrheidelberg

    mrheidelberg Senior Member

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    Location:
    United Kingdom
    Have you cleaned inside the clamp ?
     
  3. Peter The Pressman

    Peter The Pressman New Member

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    Jul 2014
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    Location:
    Brantford Ontario Canada
    Yes, as best I can - very narrow opening. Perhaps it needs more. What I have tried is roughing up the edges of the plate where the clamp grabs them. Might have slowed down the movement but did not stop it. Will try cleaning more.
     
  4. STW100

    STW100 Senior Member

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    Location:
    DENVER, CO.
    What type pf plates are you using? Poly/Metal
    Poly plate will stretch on PU-2 if you are over packed under the blanket!
     

  5. Peter The Pressman

    Peter The Pressman New Member

    Joined:
    Jul 2014
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    Location:
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    Good Point! But I am using metal plates. I think I have solved the problem by thoroughly cleaning the plate clamp with strong solvent. So far so good after that! Thanks to all for your help!
     
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