US 5,232,325 AGranted

Apparatus for stacking flat objects

AssigneeWindmoeller & Holscher

InventorsUwe Kohn, Peter Sieweke, Andreas Schroedter, Werner Ihnofeld

Life of this patent

Estimating the term…

Loading patent…

Abstract

An apparatus for stacking double bags, which have been severed by hot-wire welding from a tubular web of plastic and have opening-defining edges adjacent to their center line, includes a wicketer having a horizontal shaft and pairs of juxtaposed spokelike radial feeding arms which are axially spaced apart and secured to the shaft and are provided with means for retaining the double bags. Stacking pallets provided with upstanding stacking pins are slidably movable between the feeding arms, by which the double bags are deposited on the pallets, e.g., on needles provided on the pallets. To permit a trouble-free stacking of the objects without an intermediate stacking and without an interruption of the manufacturing process, a pallet-handling member for guiding and retaining stacking pallets is provided, which extends approximately radially with respect to the shaft and is pivotally movable about the shaft and in a first position delivers a stacking pallet to a pallet holder, which is movably mounted on the shaft, and in a second position removes the pallet from the pallet holder and then moves the pallet to a stack-removing device.

Claims11

Dependent claims

An apparatus for stacking flat objects, preferably double bags which have been severed by hot-wire welding from a tubular web or doubled web of plastic and have opening-defining edges adjacent to the center lines of such double bags,

which apparatus comprises a wicketer comprising spokelike radial feeding arms, which are secured to and angularly spaced around a rotatably mounted horizontal shaft and are arranged in pairs of juxtaposed arms spaced along said shaft and are provided with means, preferably suction nozzles, for retaining the objects on said arms,
and which apparatus also comprises interchangeable stacking pallets, which are provided with upstanding stacking pins or stacking needles, which are adapted to receive from the feeding arms the objects to be stacked on said pallet,
characterized in that
a pallet-handling member provided with means for guiding and for retaining a stacking pallet extends approximately radially with respect to the shaft and is pivotally movable about the shaft and is adapted to deliver a stacking pallet to a pallet holder mounted on said shaft when said pallet-handling member is in a first position and to remove the pallet from the pallet holder when the pallet-handling member is in a second position and is then operable to move the pallet to a stack-removing device.

1 more element

Dependencies are inferred from the claim text.