System and control method for embossed-in-register of sheet

A system for embossed-in-register of a sheet, comprising a printed film winding/releasing mechanism for winding/releasing a printed film, a film laminating roller for assistance in lamination of the printed film and a pattern roller spaced from the film laminating roller, wherein the printed film is provided with first identifiers at intervals, and the pattern roller is provided with second identifiers at intervals;

• the system further comprises:
• a color code sensing mechanism, disposed on a release path of the printed film and configured to detect the first identifiers;
• an encoder, disposed on the pattern roller and configured to detect a rotation position of the pattern roller;
• and
• a control system comprising:
• a storage unit, configured to store pattern positions, each corresponding to one of the first identifiers, of the printed film and pattern positions, each corresponding to one of the second identifiers, of the pattern roller;
• a data acquisition unit, configured to acquire a color code detection signal of the color code sensing mechanism and a position signal, detected by the encoder, of the pattern roller;
• and
• a control unit, configured to acquire a current first identifier of the printed film and a current second identifier of the pattern roller based on information detected by the color code sensing mechanism and the encoder, calculate a deviation of a pattern position, corresponding to the current first identifier, of the printed film and a pattern position, corresponding to the current second identifier, of the pattern roller in a same pattern, and generating a control signal of the pattern roller based on the deviation;
• wherein, the first identifiers are equally-divided identifiers disposed in a length direction of the printed film;
• the storage unit is configured to sequentially number the first identifiers within a pattern period of the printed film and store patterns corresponding to numbers, respectively;
• and
• the control unit is configured to count a first identifier detected every time and find a number and a pattern corresponding to the number according to the count.