Apparatus for correcting belt-meandering for secondary battery

An apparatus for correcting meandering of a base material while being transferred, the apparatus comprising:

• first and second rollers adjacent to each other and configured to receive the base material therebetween;
• a driver configured to rotate the rollers such that the base material is transferred in a first direction during the rotation;
• a transverse moving mechanism configured to move the rollers in a second direction substantially perpendicular to the first direction;
• an air pressure cylinder configured to control pressure applied to the base material by the upper and lower rollers;
• at least one wrinkle sensor configured to detect a wrinkle on the base material during the rotation;
• and
• a controller configured to control the pressure cylinder based on the detected wrinkle for a certain period of time so as to decrease the pressure applied to the base material by the first and second rollers.

An apparatus for correcting meandering of a base material while being transferred, the apparatus comprising:

• first and second rollers adjacent to each other and configured to receive the base material therebetween;
• a driver configured to rotate the rollers such that the base material is transferred in a first direction during the rotation;
• a transverse moving mechanism configured to move the rollers in a second direction substantially perpendicular to the first direction;
• means for detecting at least one of 1) a meandering of the base material and 2) a wrinkle on the base material;
• a controller configured to control the transverse moving mechanism based on the detection so as to move the rollers in a direction in which at least one of the meandering and wrinkle of the base material is at least partially corrected;
• an air pressure cylinder configured to control pressure applied to the base material by the upper and lower rollers;
• and
• at least one wrinkle sensor configured to detect a wrinkle on the base material during the rotation,
• wherein the controller is configured to control the pressure cylinder based on the detected wrinkle for a certain period of time so as to decrease the pressure applied to the base material by the first and second rollers.