windmill gripper misregistration problems

David Barraclough
on 28 Sep 12 (14:26)

Hi There
I hope somebody could give me some ideas on a problem I have with my windmill. Each windmill arm seems to position the sheet on the platen 2mm horizontally out of position in relation to the other arm. Vertically the registration is perfect. When you print a stack of sheets every other sheet is in register. ie the printing of each sheet is only consistent for each unique gripper bar . I get the same problem when running with or without guides. Is there some kind of adjustment that can be made to the windmill section to make the sheet pick up consistent or is it a job for an engineer.

thanks in advance

David

Girl with a kluge
on 28 Sep 12 (14:46)

Do you have your fine side guide adjusted all the way in (toward the platen)? If so you may be getting bounce from the sheet feeding too close the side guide.

David Barraclough
on 28 Sep 12 (15:24)

Thanks for the reply - The guide is central - will check that out.
I get the same problem though when running on grippers only (no guides) which makes me think there might be some inconsistency in the gripper arms

Girl with a kluge
on 28 Sep 12 (16:13)

There usually are. There is an adjustment for that. Do you have a manual?

whittenburginc
on 28 Sep 12 (16:43)

unfortunately there is a possibility that the gripper carrier could be damaged.
if we can be of any assistance call whittenburg inc 615 212 0015

David Barraclough
on 28 Sep 12 (17:54)

Thank you for your reply.

How would I know if the carrier is damaged?

whittenburginc
on 28 Sep 12 (18:23)

swap your grippers over, if the problem is stil the same then that would give an indication that it could be the gripper carrier and not the grippers

Girl with a kluge
on 28 Sep 12 (21:02)

http://www.boxcarpress.com/community/manuals/heidelberg-10x15-manual.pdf

Girl with a kluge
on 28 Sep 12 (21:24)

Read this post:
http://www.briarpress.org/30705#comment-38093