Patent EA-000141-B1 (EA)
Title: Method and device for releasing cathode plates
Inventor: SEGERSTROEM KJELL
IPC: C25C7/08
Filed: 1996-05-02
Abstract: 1. Method of releasing electrolytically deposited cathode plate (3) from each side of a mother plate (1), characterized in that at least one roller (40A) is pressed to the surface of the deposited cathode plate (3), and that the roller (40A) is moved a distance along the surface of the deposited cathode plate (3) in order to cause the release of the deposited cathode plate (3) from the mother plate (1) at least in the rolled area. 2. Method according to Claim 1, characterized in that the roller is pressed against the plate assembly at a distance of not more than 50 mm, preferably not more than 15 mm from the upper edge of the cathode plate. 3. Method according to Claim 2, characterized in that the roller pressed against the plate assembly, is moved a distance, the total length of which corresponds to 20 to 100% of the length of the plate assembly, preferably 40 to 80 % of the length of the plate assembly. 4. Method of releasing electrolytically deposited cathode plate (3) from each side of a mother plate (1), characterized in that from each side of the plate assembly (4) at least one roller (40A) is pressed against the plate assembly and in a direction towards a corresponding roller (40B) on the opposite side of the plate assembly, that the rollers in the at least one roller pair are powerfully pressed towards each other with the plate assembly between them, that they under continued pressure are moved synchronously a rolling distance in the region of an edge pan of the cathode plates, wherein the cathode plates are disengaged from the mother plate at least in that edge portion of the cathode plates, and that the rollers thereafter are displaced from the cathode plates, which thereafter are completely released from the mother plate in a subsequent stripping operation. 5. Method according to Claim 4, characterized in that the rollers are pressed against the plate assembly at a distance of not more than 50 mm, preferably not more than 15 mm from the upper edge of the cathode plate. 6. Method according to Claim 5, characterized in that the rollers pressed against the plate assembly, are moved a distance, the total length of which corresponds to 20 to 100 % of the length of the plate assembly, preferably 40 to 80 % of the length of the plate assembly. 7. Method according to the Claim 4, characterized in that two roller pair under pressure is moved in opposite directions from each other. 8. Method according to the Claim 7, characterized in that the two roller pairs under pressure are moved from each other from central starting positions in directions towards the outer edges of the plate assembly. 9. Device for releasing electrolytically deposited cathode plates (3) from each side of a mother plate (1), characterized in that at least one roller is provided on one side of the plate assembly, that means are provided for moving the roller, and that motion means are provided to move the roller a distance from the upper edge from the cathode plate, so that the cathode plate is disengaged from the mother plate at least in the region of the upper edge portion of the cathode plate. 10. Device for releasing electrolytically deposited cathode plates (3) from each side of a mother plate (1), characterized in that at least one roller is provided on one side of the plate assembly and the same number of rollers is provided on the opposite of the plate assembly, said rollers on each side of the plate assembly are arranged pairwise opposite each other, that means are provided for moving the rollers in each roller pair towards each other with the plate assembly between them, and that motion means are provided to move the rollers of the roller pairs synchoronously a distance from the upper edge from the cathode plates, so that the cathode plates are disengaged from the mother plate at least in the region of the upper edge portion of the cathode plates. 11. Device according to Claim 10, characterized by at least one guide (13A.13B, 14A/14B) extending on each side of the plate assembly (4), at least one slide (15A/15B), 16A/16B) on each guide, motions means (17A/17B, 19A/19B) provided to move the slides on each guide, on each slide a movably mounted roller (40A, 40B) having a vertical axis of rotation, and motion means (35A, 35B) provided to move the roller from a rear disengaged position and back to the disengaged position. 12. Device according to any of the Claims 10 and 11, characterized in that said motion means which are provided to move the rollers of the roller pairs in opposite directions from each other on each side of the plate assembly. 13. Device according to Claim 12, characterized in that the rollers on each side are provided to be moved from other while they are pressing against the plate assembly.