Winding machine with support cylinders and air pressure relieved wind up rolls
AssigneeJagenberg Aktiengesellschaft
InventorsHerbert Schonmeier, Peter Hoffmann, Hartmut Dropczynski, Reinhard Schonen
Life of this patent
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Abstract
In a winding machine, the space defined by the support cylinders and the winding rolls is sealed and an overpressure is created in this space to relieve the force with which the winding rolls press against the support cylinders. For the purpose, in the area of the two lateral ends of the support cylinders sealing elements are arranged, which for adjustment to various web widths, are axially displaceable and at the same time can be moved away to an area outside the motion range of guide heads and their mounting. In the sealing position of the sealing elements, a fictional-look connection with the support cylinders is avoided.
Claims14
A winding machine for winding a web onto a core, said machine comprising:
- two substantially horizontal support cylinders receiving a core on which a web is to be wound and supporting a wound roll formed by winding of said web on said core above a downwardly converging upper wedge-shaped gap between said support cylinders, an upwardly converging lower wedge-shaped gap being defined by said support cylinders below said upper gap and communicating therewith;
- an air distributor conforming generally in shape to said lower wedge-shaped gap and connected to a source of air under pressure for creating in said upper wedge-shaped gap a superatmospheric pressure sufficient to provide an upward force on said roll as said roll is wound up, said air distributor sealing said lower wedge-shaped gap and being lowerable at least in part from said lower wedge-shaped gap to enable insertion of a cutter for said web through said lower wedge-shaped gap;
- a respective vertically displaceable guide head at each of the opposite ends of said support cylinders and insertable into respective ends of said core;
- guide means for each of said guide heads enabling upward movement of said guide heads during winding of said roll and movement of said core away from said support cylinders, said guide heads being lowerable into a region of said upper wedge-shaped gap;
- respective sealing elements at longitudinal ends of said upper wedge-shaped gap, displaceable axially toward said ends of said roll for sealing said ends of said upper wedge-shaped gap at said ends of said roll, said sealing elements being adjustable to accommodate different widths of the wound-up webs without frictional locking to said support cylinders, said guide means being spaced axially from said longitudinal ends of said upper wedge-shaped gap to accommodate insertion of said sealing elements between said guide means and said ends of said roll;
- and
- means for lowering said air distributor and said sealing elements thereby displacing said sealing elements transverse to an axis of said roll out of paths of said heads, said sealing elements each having a lower portion conforming generally in shape to a cross section of said upper wedge-shaped gap and an upper portion extending upwardly above a line connecting uppermost points of said support cylinders and into a path of said guide heads when said sealing elements are positioned at said ends of said upper wedge-shaped gap.
Dependencies are inferred from the claim text.