Apparatus for attaching valve bags to filling spouts of filling machines
AssigneeBernhard Beumer Maschinenfabrik KG
InventorJosef Remmert
Life of this patent
Estimating the term…
Abstract
An apparatus for mounting valve bags on the filling spouts of machines which fill the bags with finely-grained material, e.g. cement. The bags are folded flat and are stacked in a bag storage container. A feed mechanism removes the topmost bag from the stack and positions it in the path of a pivotal arm. The arm is provided with rollers which correctly position and shape the top of the bag and open the valve therein. Lever-actuated clamps hold the bag while it is mounted on the filling spout of the filling machine. In a variant of the invention, the bag feeding mechanism rotates and occupies successive stations, one of which is traversed by the pivotal arm which removes the bag from the mechanism for mounting on the filling spout.
Claims32
In an apparatus for mounting valve bags on the filling spout of a material-dispensing filling machine, said apparatus including
- A. bag storage container means capable of holding a plurality of bags, each having a top, a bottom, side walls and valve means;
- B. pivot arm means pivotably attached to a locally fixed pivot joint;
- C. receiver means, attached to said pivot arm, for receiving one of said bags from said bag storage container means;
- D. opening means, attached to said pivotal arm, for opening the valve means of said one of said bags;
- the improvement comprising:
- E. fold-over means, attached to the free end of said pivot arm, for engaging and bending the top of said bag;
- whereby the top of the bag is foleded over so as to be substantially perpendicular to the side walls of the bag and the edges of the top are bent in the direction of the bottom of the bag, the top of the bag thereby assuming a roof-shaped cross-section.
A filling machine for filling valve bags with finely grained pourable material, for example cement, said filling machine being driven rotatably about a vertical axis and being provided with a plurality of filling spouts disposed on its circumference in mutually displaced manner, on which valve bags are to be mounted for filling,
- the improvement comprising a plurality of mounting apparatuses, one apparatus being associated with each one of said plurality of filling spouts, each mounting apparatus including:
- A. bag storage container means capable of holding a plurality of bags, each having a top, a bottom, side walls and valve means;
- B. pivot arm means pivotably attached to a locally fixed pivot joint;
- C. receiver means, attached to said pivot arm, for receiving one of said bags from said bag storage container means;
- D. opening means, attached to said pivotal arm, for opening the valve means of said one of said bags;
- and:
- E. fold-over means, attached to the free end of said pivot arm, for engaging and bending the top of said bag;
- whereby the top of the bag is folded over so as to be substantially perpendicular to the side walls of the bag and the edges of the top are bent in the direction of the bottom of the bag, the top of the bag thereby assuming a roof-shaped cross-section.
Dependencies are inferred from the claim text.