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  1. 16th July 2016, 08:05 PM #1
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    barrysumpter
    barrysumpter is offline GOLD MEMBER
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    Default Heavy Plywood lifter for the Paulk Workbench

    IMG_5054.jpg IMG_5058.jpg

    https://www.youtube.com/watch?v=itg-E3QxNtU

    Its really a tilter.

    19mm Ply is heavy.

    12mm ply I could lift myself but not comfortably in my small area.
    So small, I ran out of room to manipulate 12x24 after buying and stacking 19mm.


    Found the above solution on uTube.
    Not a Ron Poulk solution but works perfectly on his bench design.

    I have to manage the 19mm ply onto the lifter / tilter hook platform.
    Then move out of the way.
    While keeping the ply level.
    Maybe a wider hook platform would make this easier.

    Then just tilt the ply towards the table and slide off.

    The drifter / tilter just falls away.
    I need to glue some carpet cutoffs onto it in just the right places.

    It kinda gets in the way of clamping on the edge but otherwise I don't notice it.
    Thanks,
    Barry G. Sumpter
    May Yesterdays Tears Quench the Thirst for Tomorrows Revenge
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  3. 17th July 2016, 05:47 PM #2
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    Default

    The CNC router I used to operate had a metal flipper for loading 2400x1800 sheets, similar concept but a welded metal frame so that it had 2 hooks about 800mm apart that travelled in sync. Simply slid sheet of a pack beside it until the edge was up against the flipper, tilted the opposite edge till the sheet was vertical in the flipper (the edge in contact with it would slide down into the hooks along the way), then rotate the lower edge around and up bringing the flipper with it, catch the flipper frame as the sheet slides of onto the table and lower the flipper gently back to the rest position (boss didn't like hearing it bang in free fall).

    Our flipper was about all steel, and the pivots where about 100mm offset from the CNC frame and 100mm above the table.
    I used to be an engineer, I'm not an engineer any more, but on the really good days I can remember when I was.
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  4. 20th July 2016, 10:49 PM #3
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    barrysumpter
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    Default

    Version 2.
    Seems to drop and slam a lot quieter.

    2nd pic is no room for me fat butt to hold the tilter.



    IMG_5083.jpg IMG_5084.jpg
    Thanks,
    Barry G. Sumpter
    May Yesterdays Tears Quench the Thirst for Tomorrows Revenge
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  5. 21st July 2016, 06:27 PM #4
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    malb
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    With the flipper on the CNC, we kept material packs as close as possible to the machine so there was normally only flipping clearance between the flipper and the stack of material. With the rigid steel double arm unit, we flipped from the ends of the sheet, rather than the flipper, and reached accross to grab the flipper as it released the sheet so we could lower it gracefully.
    I used to be an engineer, I'm not an engineer any more, but on the really good days I can remember when I was.
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