Expansion adaptor and device for coiling thin metal strip
View Patent ↗A device for coiling thin metal strip, especially hot-rolled or cold-rolled thin steel strip, includes a drivable coiler mandrel which can be adjusted in diameter by expandable segments and can be adjusted to a coil inside diameter and to a diameter for detaching the finished coil. The device further includes an expansion adapter which can be inserted into the open eye of the coil and is mounted on a holder with a guide.
1. Device for coiling thin metal strip ( 1 ), especially hot-rolled or cold-rolled thin steel strip, with a drivable coiler mandrel ( 3 a ), which can be adjusted in diameter by means of expandable segments ( 3 b ) and can be adjusted to a coil inside diameter ( 14 ) and to a diameter for detaching the finished coil ( 11 ), wherein an expansion adapter ( 20 ) is provided, which can be inserted completely into an open eye ( 15 ) of the coil prior to expansion, the expansion adaptor being expandable only in a radial plane.
2. Device in accordance with claim 1 , wherein the expansion adapter ( 20 ) is provided with connections ( 22 ) for media, power, and control mechanisms.
3. Device in accordance with claim 1 , wherein the expansion adapter ( 20 ) is rotatable.
4. Device in accordance with claim 1 , wherein the expansion adapter ( 20 ) can be removed at a downstream station for treatment of the coil.
5. Device in accordance with claim 1 , wherein the expansion adapter ( 20 ) has several support elements ( 19 ) distributed along the circumference.
6. Device in accordance with claim 1 , wherein the expansion adapter ( 20 ) can be mechanically locked in the operating position ( 24 ) in the eye ( 15 ) of the coil.
7. Device in accordance with claim 1 , wherein the expansion adapter ( 20 ) can be mass-produced and can be assigned to each coil ( 11 ).