Threading device for tubular packagings
Device for pulling the front end of a feed ( 4 ) of tubular packaging (casing) from the filling tube ( 2 ) of an apportioning filling machine for paste-like filling goods through the casing brake ( 5 ) and the closing device ( 11 ), having a pull-through rod ( 24 ) for the front end ( 4 a ) of the casing which can be hung in a clamping hook ( 26 ) on the free end of the rod. The pull-through rod ( 24 ) is bent in a semicircular shape and allows for swiveling on the closing device ( 11 ) about an axis ( 23 ) passing through the circular center point and running perpendicular to the filling tube axis ( 2 a ). The swivel axis ( 23 ) of the pull-through rod is laterally offset with respect to the filling tube axis ( 2 a ), and the closing device ( 11 ) can be laterally offset by approximately the same degree with respect to the filling tube ( 2 ), from a working position in which the center axis ( 11 a ) of the closing device ( 11 ) is coaxially aligned with the axis ( 2 a ) of the filling tube ( 2 ).
1. Device for pulling a front end of a tubular casing from a filling tube of an apportioning filling machine, over which said casing is placed, away from an orifice of said filling tube and through a casing brake and closing elements of said filling machine, said device comprising a pull-through rod having a clamping hook on one end thereof for damping said front end of said casing, said pull-through rod having a semicircular shape and being swivelable about an axis which is perpendicular to the axis of said filling tube, from a first position, in which it passes through the casing brake and closing device and in which position said clamping hook on said one end of said pull-through rod is located proximate said orifice of said filling tube, to a second position in which the pull-through rod is swiveled and said clamping hook is moved away from said orifice and through said casing brake and closing device.
2. Device according to claim 1 , wherein said pull-through rod is swivelable over a range of at least approximately 180°.
3. Device according to claim 1 or 2 , wherein the swivel axis of said pull-through rod is laterally offset with respect to the axis of the filling tube, and said closing elements are laterally displaceable by approximately the same degree as said lateral offset of said swivel axis of said pull-through rod, with respect to said filling tube, from a working position in which the center axis of said closing elements is coaxially aligned with said axis of said filling tube.
4. Device according to claim 3 , wherein actuation of the displacement of the closing elements initiates axial displacement of the casing brake away from the filling tube, the displacement of the casing brake taking place prior to the displacement of the closing elements.
5. Device according to claim 3 , wherein the return of the pull-through rod ( 24 ) to said second position is coupled with the return of the closing elements to the position they occupied prior to said displacement.
6. Device according to claim 4 , wherein the return of the pull-through rod ( 24 ) to said second position is coupled with the return of the closing elements to the position they occupied prior to said displacement.