Apparatus for filling unilaterally open sacks

Details Apparatus for filling unilaterally open sacks Apparatus for filling unilaterally open sacks

1993-03-22

1994-12-27

Culver, Horace M.

Package making

With means responsive to a sensed condition

Of individual contents or group feed or delivery

53570, 156 83, 156114, B65B 132, B65B 328, B65B 4316, B65B 4318

Patent

active

053753968

ABSTRACT:
Sacks which are open on one side and which are preferably provided with side folds are gripped at their side sections in the area of their opening edges by pairs of grippers. The grippers can be displaced towards and away from each other. The lateral walls of the sacks are pulled apart in the area of the opening edges between the grippers by suction elements arranged on a rack. In the rack there are arranged filling necks which are lowerable into the open sacks. A sealing device closes the open edges of the sacks which are pulled taut by moving apart the grippers so that the open edges are laid on each other as a result thereof. In order to be able to detect the desired net weight of the filling quantity with high accuracy, the pairs of grippers and the drive for the opening and closing movements thereof and for the displacement of the grippers towards and away from each other are arranged on a frame which are connected with the rack by weighing devices.

REFERENCES:
patent: 2546193 (1951-03-01), Lindstaedt et al.
patent: 4137689 (1979-02-01), McClusky et al.
patent: 4235067 (1980-11-01), Parsons
patent: 4537013 (1985-08-01), Tetenborg et al.
patent: 4873815 (1989-10-01), Tetembprg et al.
patent: 4928473 (1990-05-01), Nagao et al.

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