Device for inserting grooves in cardboard or paper sheet, particularly for cover, particularly for book cover, comprises groove ridge which is provided with inner groove for double groove, where external groove is provided with upper tool

摘要

The device comprises a groove ridge (100.1) which is provided with an inner groove (160) for a double groove. An external groove is provided with an upper tool (110.1) and a lower tool (120.1). Another groove ridge (100.2) is provided for another double groove with another inner groove, where another external groove has another upper tool (110.2) and another lower tool (120.2). The former groove ridge has a gap (D) to the latter groove ridge. The gap is adjusted by an adjustment device which comprises two arresters. An independent claim is included for a method for inserting grooves in a cardboard or paper sheet for a cover.