Large-width cathode roller for producing high-strength ultra-thin copper foil

A large-width cathode roller for producing high-strength ultra-thin copper foil, comprising a cathode roller core (1), titanium side plates (6) and a titanium cylinder (10), wherein two ends of the titanium cylinder (10) are sealed by the titanium side plates (6), and the cathode roller core (1) penetrates through a center of the titanium side plates (6);

• a steel cylinder (9) and a copper cylinder (8) are disposed in the titanium cylinder (10), and the steel cylinder (9) is located between the titanium cylinder (10) and the copper cylinder (8) and is in contact with the titanium cylinder (10) and the copper cylinder (8);
• a first copper plate (5), a second copper plate (4) and a steel support plate (3) are sequentially connected to and disposed on an inner side of each said titanium side plate (6);
• an inner ring surface of the titanium side plate (6), an inner ring surface of the first copper plate (5) and an inner ring surface of the second copper plate (4) are all connected to a copper sleeve (2) disposed around the cathode roller core (1), an outer ring surface of the second copper plate (4) and an outer ring surface of the steel support plate (3) are connected to an inner wall of the copper cylinder (8), an inner ring surface of the steel support plate (3) is connected to the cathode roller core (1), and an outer side, close to the cathode roller core (1), of the steel support plate (3) is connected to the copper sleeve (2);
• multiple groups of electrically conductive support rings (11) are disposed on the inner wall of the copper cylinder (8) at equal intervals in an axial direction, the multiple electrically conductive support rings (11) are connected through electrically conductive copper bars (7), and two ends of the electrically conductive copper bars (7) penetrate through the steel support plates (3) to be in contact with the second copper plates (4);
• each of the electrically conductive support rings (11) comprises a first copper support ring (111), a steel support ring (112) and a second copper support ring (113), the steel support ring (112) is located between the first copper support ring (111) and the second copper support ring (113) and is attached to the first copper support ring (111) and the second copper support ring (113);
• the electrically conductive copper bars (7) are annularly arranged along the electrically conductive support rings (11), and central angles between the adjacent electrically conductive copper bars (7) are identical.