Device and method for weighing a spool
AssigneeValmet Corporation
InventorsPatric Ekegren, Johanna Pihl, Mickey Lindewall, Ola Adamsson, Lars P. Hellström
Life of this patent
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Abstract
A device and a method for weighing a roll of continuous web material on a spool at a weigh-ing station in a continuous process is described, which has fewer mechanical parts and is safer to use than prior devices and methods. The device is arranged adjacent to at least one of a pair of guide rails and comprises a damper and a load cell, wherein the load cell is integrated into at least one guide rail.
Claims19
A Device for weighing a roll of continuous web material comprising:
- a spool arranged at a weigh station;
- said device arranged adjacent to at least one of a pair of guide rails on each side of the spool;
- a damper connected to the at least one of a pair of guide rails;
- a position sensor adjacent to the damper adapted to indicate the spool has entered the weigh station;
- A load Cell;
- wherein the load cell is integrated into at least one guide rail.
A method of weighing a roll of continuous web material on a spool (2) at a weighing device (1), arranged adjacent to at least one of a pair of guide rails (3;3′), which spool is transported along said pair of guide rails (3,3′), wherein the method comprises the steps of:
- decelerating a transporting speed of the spool (2) along the guide rails to 0 m/s using a damper (4);
- weighing the spool (2) on a load cell (5), which load cell is integrated in the guide rails;
- and
- ejecting the spool out of the weighing device (1),
- wherein the damper (4) returns to its original position after step i so that no other parts than the load cell (5) is in direct contact with the spool during the weighing step.
A method of weighing a roll of continuous web material on a spool (102) at a weighing device (101), arranged adjacent to at least one of a pair of guide rails (103;
- 103′), which spool (102) is transported along said pair of guide rails (103,103′), which method comprises the steps of:
- decelerating a transporting speed of the spool (102) along the guide rails to 0 m/s using a damper (104);
- decelerating the spool's rotation around its axis using a brake device (106);
- weighing the spool on a load cell (105);
- and
- ejecting the spool out of the weighing device (101)
- wherein the damper (104) returns to its original position after the first decelerating step, and the brake (106) returns to its original position after the second decelerating step so that no other parts than the load cell, which load cell is integrated in the guide rails, is in direct contact with the spool during the weighing step.
Dependencies are inferred from the claim text.