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AssigneeThyssenKrupp Steel Europe AG
InventorsThomas Flehmig, Jörg Gorschlüter, Stefan Wischmann
Estimating the term…
The invention relates to a method for the decoating at least in part of blanks made of metal which are coated on one or both sides in regions, which have a main extension direction, wherein the regions to be decoated can extend in both a straight or curved manner in the main extension direction. The invention further relates to a device for the decoating at least in part of a coated blank in order to carry out the method according to the invention. A method is provided in which the blank is placed on a blank support of a press and during the closing movement of the press at least one scraping knife preferably completely removes the coating of the blank by scraping substantially perpendicular to the main extension direction of the region of the blank to be decoated.
A method for the decoating at least in part of blanks made of metal which are coated on one or both sides in regions, which are flat and have a main extension direction in a plane of the blank, wherein the regions to be decoated extend in either a straight or curved manner in the main extension direction, the method comprising:
A device for the decoating at least in part of a coated blank, comprising a press with an upper tool, a lower tool, a blank support, a pressing table, at least one scraping knife and means to move the at least one scraping knife substantially perpendicular to a main extension direction of a region of the blank to be decoated in order to decoat this region, wherein the means to move the at least one scraping knife comprises forcible scraping knife guides to guide the at least one scraping knife or a plurality of scraping knives, and wherein at least one scraping knife in the upper tool and at least one scraping knife in the lower tool and forcible scraping knife guides allocated to each scraping knife are provided, the forcible scraping knife guides of the upper tool are form locked to the forcible scraping knife guides of the lower tool during a welding process of the press and the forcible scraping knife guides of the lower tool are forcibly actuated by means of sleeves of the press which have thrust chamfers such that by means of a closing movement of the press the scraping knives in the upper tool and in the lower tool are displaced perpendicular to the closing movement.
Dependencies are inferred from the claim text.