DEVICE FOR DETECTING CONVEYANCE AMOUNT OF PLATE-SHAPED OBJECT, DEVICE FOR CUTTING PLATE-SHAPED OBJECT, METHOD FOR DETECTING CONVEYANCE AMOUNT OF PLATE-SHAPED OBJECT, DEVICE FOR FORMING CUTTING LINES ON PLATE-SHAPED OBJECT, AND METHOD FOR FORMING CUTT

摘要

The present invention relates to a device for detecting the conveyance amount of a plate-shaped object, the device comprising: a roller for rotating in contact against a plate-shaped object being transported; signal-generating means for generating a signal corresponding to the amount of rotation of the roller; computing means for computing the conveyance amount of the plate-shaped object on the basis of the signal; cutting-line-forming means for scanning along a guide frame and forming a cutting line on the plate-shaped object; measuring means for measuring the spacing between two adjacent cutting lines formed by cutting on the plate-shaped object; and a correction controller that has a reference spacing stored therein for the aforementioned spacing, compares the reference spacing with the spacing measured by the measuring means, obtains the amount of variation of the spacing measured by the measuring means in relation to the reference spacing, calculates a correction value corresponding to the amount of variation, and corrects, on the basis of the correction value, the conveyance amount of the plate-shaped object computed by the computing means.