초록 ▼

A rotary vacuum wicketting device has a stationary hub and a rotary hub that has a number of vacuum arms to carry plastic bags or similar workpieces from a first work station to a second work station where they are placed on a wicket. The rotary and stationary hubs are both molded of a plastic synth

A rotary vacuum wicketting device has a stationary hub and a rotary hub that has a number of vacuum arms to carry plastic bags or similar workpieces from a first work station to a second work station where they are placed on a wicket. The rotary and stationary hubs are both molded of a plastic synthetic resin which has been filled with a suitable lubricating agent. The radial arms are also formed of the plastic synthetic resin and are molded to have a square cross section from the radially outward end to and including the male portion that fits into a square cross section socket in the peripheral wall of the rotating hub. The tubular arms have a removable end cap to facilitate cleaning debris that may have collected inside the arms. A removable plastic wear plate is carried on the forward-facing surface of each of the arms to absorb wear and abrasion from action of the plastic film workpieces.

대표청구항 ▼

Rotary vacuum pickup apparatus for carrying flat workpieces from a first work station and placing the workpieces on a wicket at a second work station; comprising a vacuum hub assembly formed of a stationary hub and a rotary hub superposed on one another and having a common axis, the stationary hub i

Rotary vacuum pickup apparatus for carrying flat workpieces from a first work station and placing the workpieces on a wicket at a second work station; comprising a vacuum hub assembly formed of a stationary hub and a rotary hub superposed on one another and having a common axis, the stationary hub including vacuum channel means for applying vacuum over a predetermined angular portion of the superposed rotary hub, and the rotary hub having a peripheral surface, an axial surface in communication with the vacuum channel means of the stationary hub, and a plurality of spaced sockets which penetrate to said axial surface to communicate with said vacuum channel means; and a plurality of radial arms mounted in the rotary hub and projecting radially outward therefrom, each said arm being a tube closed at its radial outward end, having a male portion at its radial inward end which fits into a respective one of said sockets, and having a flat longitudinal face on the side that faces in the rotation direction of said rotary hub and which is provided with perforations therethrough so that the arm can carry said workpieces by vacuum from the first work station to said second work station; comprising the improvement herein each said arm is of uniform internal cross section from the radial outward end to and including the male portion, so that blind pockets are avoided where dust might accumulate.