Electrode marking device and roll map creation system

A roll map generating system comprising:

• a position measuring device configured to obtain information about a position of an electrode in a longitudinal direction of the electrode according to an amount of rotation of an unwinder or a rewinder in a form of a coordinate in the longitudinal direction, when the electrode is moved between the unwinder and the rewinder;
• at least one defect inspector configured to inspect the electrode to specify a defective portion, and connected to the position measuring device to obtain a coordinate of the defective portion in the longitudinal direction of the electrode;
• a marking machine installed behind the at least one defect inspector in a direction of movement of the electrode, and configured to make a mark on the defective portion of the electrode according to a defect marking signal from a controller;
• the controller configured to output the defect marking signal to the marking machine at a moment when a real-time relative position value of the marking machine relative to the moved electrode becomes greater than the coordinate of the defective portion, and obtain as a marking coordinate a real-time relative position value of the marking machine at a point in time when the defect marking signal is output;
• and
• a roll map generating part configured to generate a roll map defined as a coordinate plane with coordinates of two axes, wherein the position of the moved electrode is displayed using coordinates on the coordinate plane, and the two axes include an axis in the longitudinal direction of the electrode and an axis in a width direction of the electrode,
• wherein the roll map generating part is configured to display the defective portion on the roll map, based on the marking coordinate received from the controller.

A roll map generating system comprising:

• a position measuring device configured to obtain information about a position of an electrode in a longitudinal direction of the electrode according to an amount of rotation of an unwinder or a rewinder in a form of a coordinate in the longitudinal direction, when the electrode is moved between the unwinder and the rewinder;
• at least one defect inspector configured to inspect the electrode to specify a defective section, and connected to the position measuring device to obtain a starting coordinate and an ending coordinate of the defective section in the longitudinal direction of the electrode;
• a marking machine installed behind the defect inspector in a direction of movement of the electrode, and configured to make a mark on the electrode along the defect section according to a signal instructing to start and end marking, the signal being received from a controller;
• the controller configured to output a defect marking signal to the marking machine at a moment when a real-time relative position value of the marking machine relative to the moved electrode becomes greater than the starting coordinate of the defective section, stop the output of the defect marking signal at a moment when the real-time relative position value becomes greater than the ending coordinate of the defective section, and obtain a real-time relative position value of the marking machine as a marking starting coordinate when the defect marking signal is output, and a real-time relative position value of the marking machine as a marking ending coordinate when the outputting of the defect marking signal is stopped;
• and
• a roll map generating part configured to generate a roll map defined as a coordinate plane with two axes of coordinates, wherein the position of the moved electrode is displayed using coordinates on the coordinate plane, and the two axes include an axis in the longitudinal direction of the electrode and an axis in a width direction of the electrode,
• wherein the roll map generating part is configured to display the defective section on the roll map, based on the starting marking coordinate and the ending marking coordinate received from the controller.