Patent ID: 8424860
Filing Date: 2013-04-23
Classification: B42B

Abstract:
1. A method for stitching printed products with a stitching machine having at least one stitcher head, which travels concomitantly with a printed product conveyed in a product travel direction, and at least one concomitantly traveling bending device, the method comprising the steps of: positioning the bending device in a first position, which corresponds to a thickness of the printed product to be stitched and which is a certain distance away from the stitcher head in a direction transverse to the product travel direction; conveying the printed product to the stitching machine on a saddle chain of a saddle stitcher, the bending device when in the first position extending above an upper edge of the saddle chain and holding the printed product; determining a thickness value of the printed product to be stitched; comparing the thickness value with a predetermined limit value; moving, if the limit value is exceeded, the bending device into a predetermined second position, which is farther away from the stitcher head than the first position in the direction transverse to the product travel direction, in which second position the bending device is below the upper edge of the saddle chain; introducing the printed product in the product travel direction between the stitcher head and the bending device; moving the bending device back into the first position in the direction transverse to the product travel direction so that the bending device again holds the printed product; securely holding the introduced printed product by moving the stitcher head toward the bending device in the direction transverse to the product travel direction; driving a wire stitch into the securely held printed product by way of the stitcher head; closing the driven-in wire stitch by a closing movement of the bending device; and releasing the stitched printed product after closing of the wire stitch.