Material or article handling – Article reorienting device – Article support means rockable on fixed surface
Patent
1990-05-09
1991-07-30
Werner, Frank E.
Material or article handling
Article reorienting device
Article support means rockable on fixed surface
414758, 414766, 280 4712, B65H 1500
Patent
active
050355708
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a device for turning a load upside-down which is positioned on a support spaced from an underlying surface, especially for turning a pile of papers in conjunction with a printing press.
When printing sheets of paper in a printing press in which the sheets are printed on one side in a first run through the printing press and are printed on the other side in a second run therethrough, the sheets must be turned upside-down between the two printing operations. After the first printing operation, the sheets are deposited on a pallet at the output side of the printing press. When a finished pile of papers has been obtained on the pallet, a further pallet is placed on top of the pile which is then conveyed to a so-called pallet turning device to be turned upside-down. After such turning, the pile is conveyed to the input side of the printing press, whereupon the other side of the sheets of paper is printed in the second printing operation.
Pallet turning devices for use in connection with sheet printing presses are known from e.g. Swedish Patent Specification 7503412-4 and German Offenlegungsschrift 2,628,504. Both of them show pallet turning devices which are quite complicated. These pallet turning devices are also so expensive that one and the same pallet turning device is normally used for several printing presses. Since they are also bulky and heavy, they are fixedly mounted, and therefore the piles of papers must, as described above, be conveyed back and forth between the printing press and the pallet turning device.
A special object of the present invention is therefore to provide a simple and inexpensive pallet turning device which eliminates these drawbacks.
A more general object is to provide a simple and inexpensive as well as readily movable and manageable device for turning a load upside-down which is positioned on a support spaced from an underlying surface.
According to the present invention, these objects are achieved by means of a device which is of the type mentioned by way of introduction and which is characterized by a load supporting member for carrying the load; a side support adapted to engage one side of said load and connected with said load supporting member; a lever means for operating said device, said lever means being connected with said load supporting member and adapted to be moved, together with the load supporting member, under the load to a starting position in which said load supporting member is located under the load, said side support engages said one side of the load, and said lever means extends beyond the load at the opposite side thereof; a clamping means for clamping the load against the load supporting member and the side support; and an arcuate support means which is arranged on said side support and is adapted to rest against said underlying surface and about which said device is turnable upon raising of the lever means from said starting position and continued turning thereof for turning the load upside-down.
According to a preferred embodiment, the side support comprises a member fixedly connected with said load supporting member, and a member which is movable relative to the fixed member so as to adjust the height of said side support to the height of said load, and which is provided with a flange for engaging the upper side of the load.
The movable member of said side support preferably carries an arcuate support element included in said arcuate support means.
The invention will now be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view of a device according to the invention in a starting position.
FIGS. 2A-2E are schematic side views of the device in different positions during turning of a load.
The device shown in the drawings is particularly intended to be used in conjunction with a sheet printing press for turning a pile of sheets upside-down.
The device will first be described with reference to FIG. 1, for which reason definitions such as "horizontal", "vertical", "upper" and "lower" r
REFERENCES:
patent: 1185615 (1916-06-01), Beaumont et al.
patent: 2029656 (1936-02-01), Dawson
patent: 2424258 (1947-07-01), Smith
patent: 2439581 (1948-04-01), Robins
patent: 4173428 (1979-11-01), Thornberg
patent: 4705283 (1987-11-01), Kleisath
Dinicola Brian K.
Hultberg Leif
Werner Frank E.
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