Reel-up with separately acting actuators for influencing linear pressure
AssigneeValmet-Karlstad AB
InventorsMarkku Kyytsonen, Tord O. S. Svanqvist
Life of this patent
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Abstract
A reel-up comprises a surface winding drum; two rails to support a reeling drum; and secondary carriages movable linearly along the rails and provided with press devices to press against the reeling drum to maintain a predetermined linear pressure in the nip between the surface winding drum and the paper reel as it increases in size. Each secondary carriage comprises an actuator arranged to press the press device against the reeling drum with a predetermined force to control the linear pressure at each set position of the secondary carriage without influence from the actuator which sets the secondary carriage depending on the growth of the paper reel.
Claims13
A reel-up in a paper machine in which paper is manufactured in a continuous web and reeled onto reeling drum in the reel-up to produce a paper reel, each end portion of the reeling drum being provided with a bearing housing and a braking drum with a coupling device for optional central driving of said reeling drum, said reel-up comprising a stand;
- a driven surface winding means rotatably journalled in the stand for advancing the continuous web over said surface winding means in surface-to-surface contact with the paper reel and thereby defining a nip between said surface winding means and the paper reel;
- two parallel rails mounted in the stand to support the reeling drum at said bearing housings;
- a secondary system movable linearly along said rails and provided in the vicinity of each rail with a linearly movable secondary body;
- first actuators mounted on the stand for synchronous movement of the secondary bodies as the diameter of the paper reel increases during Winding;
- press devices disposed on the secondary bodies;
- each secondary body comprising a second actuator mounted on a respective press device-and arranged to press said press device against a corresponding bearing housing on the reeling drum to control the linear pressure in the nip between the surface winding means and the paper reel independent of said first actuators.
A reel-up in a paper machine in which paper is manufactured in a continuous web and reeled onto a reeling drum in the reel-up to produce a paper reel, each end portion of the reeling drum being provided with a bearing housing and a braking drum with a coupling device for optional central driving of said reeling drum, said reel-up comprising a stand;
- a driven surface winding means rotatably journalled in the stand for advancing the continuous web over said surface winding means in surface-to-surface contact with the paper reel and thereby defining a nip between said surface winding means and the paper reel;
- two parallel rails mounted in the stand to support the reeling drum at said bearing housings;
- a secondary system movable linearly along said rails and provided in the vicinity of each rail with a linearly movable secondary body;
- first actuators mounted on the stand for synchronous movement of the secondary bodies as the diameter of the paper reel increases during winding;
- press devices disposed on the secondary bodies;
- each secondary body comprising a second actuator mounted on a respective press device and arranged to press said press device against a corresponding bearing housing on the reeling drum to control the linear pressure in the nip between the surface winding means and the paper reel independent of from said first actuators;
- a drive means for central driving of said reeling drum, said central drive means comprising a rotating coupling device for coaxial connection to one of the coupling devices of said reeling drum during its rotation, said central drive means being mounted on one of the secondary bodies to be moved together with said one secondary body;
- said secondary bodies having positioning means to abut in operative position against the bearing housings of said reeling drum on the side facing the surface winding means in order, together with said press devices, to fix the reeling drum so that its axis of rotation coincides with the axis of rotation of the coupling device of said central drive means;
- wherein said central drive means is movable in relation to said one secondary body in a first direction parallel to the axis of said reeling drum in order, when said two axes of rotation coincide during operation, with the aid of an actuator, to bring the coupling device of said central drive means into engagement with the opposite coupling device of the reeling drum and also in a second direction perpendicular to said first direction in order, when the central drive means is connected during operation, to still permit said second actuators to control the linear pressure.
A reel-up in a paper machine in which paper is manufactured in a continuous web and reeled onto a reeling drum in the reel-up to produce a paper reel, each end portion of the reeling drum being provided with a bearing housing and a braking drum with a coupling device for optional central driving of said reeling drum, said reel-up comprising a stand;
- a driven surface winding means rotatably journalled in the stand for advancing the continuous web over said surface winding means in surface-to-surface contact with the paper reel and thereby defining a nip between said surface winding means and the paper reel;
- two parallel rails mounted in the stand to support the reeling drum at said bearing housings;
- a secondary system movable linearly along said rails and provided in the vicinity of each rail with a linearly movable secondary body;
- first actuators mounted on the stand for synchronous movement of the secondary bodies as the diameter of the paper reel increases during winding;
- press devices disposed on the secondary bodies;
- each secondary body comprising a second actuator mounted on a respective press device and arranged to .press said press device against a corresponding bearing housing on the reeling drum to control the linear pressure in the nip between the surface winding means and the paper reel independent of said first actuators;
- a drive means for central driving of said reeling drum, said central drive means comprising a rotating coupling device for coaxial connection to one of the coupling devices of said reeling drum during its rotation, said central drive means being mounted on one of the secondary bodies to be moved together with said one secondary body;
- said secondary bodies having positioning means to abut in operative position against the bearing housings of said reeling drum on the side facing the surface winding means in order, together with said press devices, to fix the reeling drum so that its axis of rotation coincides with the axis of rotation of the coupling device of said central drive means;
- wherein said central drive means is movable in relation to said one secondary body in a first direction parallel to the axis of said reeling drum in order, when said two axes of rotation coincide during operation, with the aid of an actuator, to bring the coupling device of said central drive means into engagement with the opposite coupling device of the reeling drum and also in a second direction perpendicular to said first direction in order, when the central drive means is connected during operation, to still permit said second actuators to control the linear pressure;
- and wherein said one secondary body is equipped with a first support and journalling means arranged to support and permit linear movement of said central drive means in relation to said one secondary body in said first direction, and further a second support and journalling means arranged to support and permit linear movement of said central drive means in relation to said one secondary body in said second direction, said first support and journalling means also carrying said second support and journalling means.
Dependencies are inferred from the claim text.