Sm 74 2 color feeder timing problem

Discussion in 'Heidelberg Printing Presses' started by Raman karthi, May 6, 2022.

  1. Raman karthi

    Raman karthi Member

    Joined:
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    Location:
    nigeria
    Dear members,

    We have problem in feeding unit , that side lay is not pulling the paper properly, and when checking inching with feeder on swing arm gripper hold the paper before side lay pull the paper.

    Please can any one explain what reason .

    And please how to set feeder timing and swing arm gripper open and closing timing

    Thanks
     
  2. Adil

    Adil Senior Member

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    Location:
    Casablanca
    The pulling rectifier is part of the 1st group in your case from what I understood the pulling rectifier and late in relation to the pendulum, if this is the case it is then necessary to synchronize the rectifier in relation to the pendulum
    I have a question to ask you first of all is this a new assembly of the machine?? or you have made an intervention at the level of the entrainemznt pulling rectifier??
    You have to make a good diagnosis before you act.
     
  3. Raman karthi

    Raman karthi Member

    Joined:
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    Location:
    nigeria
    Dear sir, that machine is bought recently, and installed. We started feeding paper and check the printing,
    But while feeding the paper side lay is not pulling probably some sheet. When we check it in inching swing gripper is hold tightly before pulling side lay,

    Do you have any ideas.
    And please explain what are the degrees for feeder timing and pull lay and swing gripper setting
     
  4. Adil

    Adil Senior Member

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    Location:
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    After each installation of the machine it is always necessary to check and adjust the advance and delay of the feeder in relation to the printing unit, this is done through the clutch of the feeder on the drive side.
    - set an average clamp grip 9 mm
    - switch on the feeder, advance the machine in jerks and pass at least three sheets
    - remove the first two sheets from the margin plate
    - continue to move the machine in jerks, the third sheet of paper must reach the ANK sensors at 300°.
    - loosen the hexagonal screws of the clutch on the drive side
    - if the sheet arrives too soon, you must then turn backwards in the opposite direction to the rotation of the watch
    - if the sheet arrives too late, the feeder must then be turned in the direction of rotation of the clock
    Give it a try and tell me the result
     
  5. Raman karthi

    Raman karthi Member

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    Location:
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    Ok sir, thanks for information, will check it and give inform you.
     

  6. Adil

    Adil Senior Member

    Joined:
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    Location:
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    If it does not work then you do not have a synchronization problem, it is possible that during the dismantling you touched the synchronization adjustment of the rectifier pulling with the 1st printing unit, to correct there is another procedure
     
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