US 4,432,186 AGranted

Automatic bag hanger

OwnerHarold R. McGregorinventor

Life of this patent

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Abstract

Apparatus for filling bags and providing completely controlled handling of bags from pickup through their movement to a bag closing station. A pair of elongated forming bars supported for up and down movement and traversing movement between a bag filling hopper and a laterally spaced bag closing station grip, flatten, and assist in forming gusseted bags after filling while the bags are still clamped on a filling spout, and thereafter controllably lower the filled bags to a conveyor and support the bags on the conveyor in traversing movement to a final bag closing station. A pair of gusset arm assemblies supported for lateral shifting movement on opposite sides of a filling spout each include a pair of gusset clamping fingers which are disposed inside of the mouth of a bag during filling. The clamping fingers are actuated in a predetermined sequence to hold and form the gusset pleats of the bag while permitting the bag to be opened over its full width during the filling operation. Accurate closing is assured by continuous gripping of the bag at all times.

Claims10

Dependent claims

An automatic bag hanger for handling and accurately hanging bags to be filled on a filling apparatus comprising gripping means, said hanger comprising:

means for picking a bag to be filled off a stack of bags;
means for transferring said bag from said picking means to a registry position;
and
hanging means for hanging said bag on said filling apparatus from said registry position, said hanging means comprising a first moving means movable between a first position adjacent said registry position and a second position closely adjacent to and spaced from said filling apparatus;
a second moving means for moving said hanging means between said second position and a third position located for filling by said filling apparatus;
and
clamping means for clamping a bag to said hanging means, said clamping means being independent of said filling apparatus gripping means allowing said clamping means to hold a first bag in said second position waiting to be filled while said gripping means grips a second bag at said filling apparatus during filling, said hanging means maintaining clamping contact continuously from said registry position until said filling apparatus gripping means grips said bag.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/289,803Filed 3 Aug 1981 · continuation in part
Priority: 5 May 1980
Granted: 21 Feb 1984
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

B65B 39/08
Adapted to support containers or wrappers: by means of clamps
B65B 7/06
Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks: by collapsing mouth portion, e.g. to form a…
B65B
Machines, apparatus or devices for, or methods of, packaging articles or materials