Plate clamp repair

Discussion in 'KBA Printing Presses' started by john blakeslee, Oct 8, 2019.

  1. john blakeslee

    john blakeslee New Member

    Joined:
    Oct 2019
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    Location:
    omaha, ne
    Just out of curiosity, what is everyone doing to fix plates slipping out of the plate clamps?
     
  2. turbotom1052

    turbotom1052 Senior Member

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    Vermont
    Do the plates your using measure .012". If not then there is your problem. Clamps could also need either cleaning, adjustment, or both. Not sure of procedure on KBA but im sure there are provisions for adjustment. If wash-ups or plate cleaning and gumming are sloppy you could also have buildup inside the clamps that are clogging up the knurl and causing the clamps to be ineffective at getting a good bite of the plate.
     
  3. alibryan

    alibryan Senior Member

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    Location:
    Pacific NW
    @OP-

    I don’t know how anyone can effectively answer a question about plate clamps, without first knowing what it is that you’re talking about. What exactly is the problem? What press is it, what plates, is there any plate hanging automation etc.?
     
  4. KBAtech

    KBAtech Member

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    Location:
    Oklahoma
    Hello John,
    What press are you having plate problems with ?
     
  5. john blakeslee

    john blakeslee New Member

    Joined:
    Oct 2019
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    Location:
    omaha, ne
    I have a large format press that I am currently installing all new hinges in. I was just curious what other companies are doing to solve plate slip issues. I have talked with a pressman at another company and he says they just “deal” with the plates slipping out. I’m guessing they add a piece of material between the hinge and the plate to create a tighter clamp and so the hinge locks like it should when the tension is released.
     

  6. KBAtech

    KBAtech Member

    Joined:
    Nov 2019
    Messages:
    5
    Location:
    Oklahoma
    I have a service company specializing in large format KBA’s if you need any assistance - I’ve rebuilt many clamps over the years.
    Check the ledge on the body of the plate clamp segments - there should be a 1mm ledge for the clamp to crimp against. There were also some clamp segments that had set screws in the lids that need to be adjusted for the proper heights of the clamping claw to get over center and hold the plate.
    Jim Kruse
    918-571-0625
     
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