Patent EP-1916042-B1 (EP)
Inventor: FECKER EUGEN
IPC: B23D15/06
Filed: 2007-08-17
Granted: 2009-11-18
Abstract: The line for straightening strip material (3) wrapped to a coil (2) and for feeding in the strip material to a processing machine, comprises a winder (4), on which the coil is holdable and the strip material of the coil is windable, a feed (5) for the delivery of the strip material from the line to the processing machine, a straightening machine (6) displaced between the winder and the feed, a device (23) for cutting the strip material end of the coils and the strip material beginning of the coils, and a device for connecting the cut strip material end with the cut strip material beginning. The line for straightening strip material (3) wrapped to a coil (2) and for feeding in the strip material to a processing machine, comprises a winder (4), on which the coil is holdable and the strip material of the coil is windable, a feed (5) for the delivery of the strip material from the line to the processing machine, a straightening machine (6) displaced between the winder and the feed, a device (23) for cutting the strip material end of the coils and the strip material beginning of the coils according to a predefinable outline related to the level stretched by the length and breadth of the strip, and a device for connecting the cut strip material end with the cut strip material beginning. The straightening machine is hung at guides and its winder-side line inlet is raised or lowered. The cutting device is adjustable so that the non-predefinable outline by stressed places processes the work piece producible from the strip material in the processing machine. The straightening machine comprises a separating mechanism at the line intake so that it is adjustable and controllable. The strip remainder and/or strip end hook of the strip material windable on the winder are obligatorily separated. The separating mechanism is formed as a plasma or laser cutting device, which is propelable with a high number of revolutions and is displaceable by a ball caster spindle mechanism with gear motor in an angle of 90 degrees to the direction of travel of the strip material. A cutting- and connecting device are arranged in the feed at the line-intake side. The distance between the cutting device and the middle of the feed rolls of the feed is an integer multiple of the feed length. The strip material end and -beginning of the coil circumcised by the cutting device are positioned to one another in the area of the connection device arranged between the cutting device and the feed inlet. The distance between the connecting device and the cutting device and/or the center of a feed roller corresponds to the feed length or an integer multiples of the feed length. A cutting and/or a connecting head of the cutting device and/or the connecting device are propelable by a drive device with servomotor, servo frequency converter and ball spindle mechanism. The cutting head is formed as laser or plasma cutter head. The connecting head is formed as laser or plasma welding head. The cutting device cuts according to predefined data in a work piece memory. The connecting device is formed as clinching device. A centering device is arranged in the straightening machine for centering the strip material in horizontal direction. The upper straightening rolls of the straightening machine is held for few seconds in ventilatable manner and the strip side guides of the centering device are centrically adjustable after ventilation of the upper straightening rolls by positioning motor-thread spindle mechanism. The line has displacement gauges or fork light barriers, by which the circulating path of the guides of the centering device is penetratable and is placed in the bandwidth distance in centering position. The strip-side guides are formed as hardened and polished strip-side guides. The feed-side strip outlet of the straightening machine is raised and lowered. The straightening machine and/or the strip inlet of the straightening machine is adjustable with all outside diameters of the coils in an optimal beginning of the strip transfer position. The straightening machine and/or the strip outlet of the straightening machine with different vertical position of the feed and/or the processing machine proximate to the feed motion is adjustable into the optimal beginning of strip transfer position. A swivel bearing of the straightening machine, around which the strip inlet during raising and lowering is tiltable, is adjustable in vertical direction with respect to the guide and/or the guides. A vertical position drive for the strip inlet of the straightening machine comprises a servomotor, servo frequency converter and ball spindle mechanism. A vertical position drive for the strip outlet of the straightening machine comprises two servomotor, servo frequency converter and ball spindle mechanism. A horizontal position drive for the straightening machine comprises a servo gear motor, a precision gear wheel and a precision gear rack. The horizontal and the vertical position drives are operable at the same time. A discharge brake torque of an outlet brake of the winder is controllable dependent upon the outside diameter of the coils. The straightening machine at the strip inlet has a strip end sensor for detecting the availability of the strip remainder. The straightening machine is displaceable by the horizontal position drive with standing straightening machine roles with the strip speed in horizontal direction. A displacement sensor is arranged at the feed motion and by which the strip speed is detectable and transferred to a control device of the horizontal position drive. A sensor startable by the straightening machine is arranged in a predefined distance of 1.5 m. The horizontal position drive is adjustable for a distance of 1 m with a creep speed. A transfer table is arranged within the area of the inlet-side of the separating device. The separating mechanism is formed as compactly formed shears for the strip material beginning.