Electrode sheet rewinding apparatus including position-changeable idle roller

An electrode sheet rewinding apparatus for rewinding an electrode sheet that has passed through a portion of a secondary battery electrode manufacturing process, the electrode sheet rewinding apparatus comprising:

• a bobbin having a PET film wound therearound;
• a bobbin holder configured to hold the bobbin;
• a base plate located under the bobbin holder, the base plate configured to support the bobbin holder;
• a roller type touch roll configured to press an electrode sheet rewound around the bobbin above the bobbin to prevent meandering of the electrode sheet;
• a vertical plate located at one side of the base plate, the touch roll attached to the vertical plate;
• and
• an idle roller unit configured to form a tangential line to the electrode sheet rewound around the bobbin together with the touch roll, wherein
• the idle roller unit comprises:
• an idle roller configured to maintain tension of the electrode sheet that is rewound and to form a tangential line to the electrode sheet;
• and
• a first driving means and a second driving means configured to change a position of the idle roller.