Apparatus for decelerating and temporarily accumulating hot rolled product
View Patent ↗An apparatus is disclosed for decelerating and temporarily accumulating a hot rolled product moving longitudinally along a first axis at a first velocity V 1 . The apparatus comprises a curved guide with an entry end aligned with the first axis to receive the product, and with an exit end spaced radially from the first axis and orientated to deliver the product in an exit direction transverse to the first axis. The curved guide is rotatable about the first axis in a direction opposite to the exit direction of the product and at a speed at which its exit end has a second velocity V 2 lower than V 1 and such that the product is delivered from the exit end as a helical formation of rings and at a third velocity V 3 equal to V 1 −V 2 . A cylindrical drum is arranged to axially receive the helical formation of rings and to rotate about the first axis in a direction opposite to the direction of rotation of the curved guide and at a speed such that the product is unwound from the drum at the third velocity V 3 . A receiver moves to and fro along a path parallel to the first axis to receive the product being unwound from the drum. A shroud is configured to partially encircle the drum, and rotatable interior rollers are circumferentially spaced around the interior of the shroud. The interior rollers are spaced radially from the surface of the drum and extend in parallel relationship with the first axis.
1. Apparatus for decelerating and temporarily accumulating a hot rolled product moving longitudinally along a first axis at a first velocity V 1 , said apparatus comprising:
a curved guide having an entry end aligned with said first axis to receive said product, and having an exit end spaced radially from said first axis and orientated to deliver said product in an exit direction transverse to said first axis, said curved guide being rotatable about said first axis in a direction opposite to said exit direction and at a speed at which said exit end has a second velocity V 2 lower than V 1 and such that said product is delivered from said exit end as a helical formation of rings and at a third velocity V 3 equal to V 1 −V 2 ;
a cylindrical drum arranged to axially receive said helical formation of rings, said drum being rotatable about said first axis, in a direction opposite to the direction of rotation of said curved guide and at a speed such that said product is unwound from said drum at said third velocity;
receiving means movable along a path parallel to said first axis for receiving the product being unwound from said drum;
a shroud configured to partially encircle said drum; and
rotatable interior rollers circumferentially spaced around the interior of said shroud said interior rollers being spaced radially from the surface of said drum and extending in parallel relationship with said first axis.
2. The apparatus of claim 1 further comprising rotatable exterior rollers circumferentially spaced around the surface of said drum, said exterior rollers also extending in parallel relationship with said first axis.
3. The apparatus of claim 1 wherein said interior rollers are staggered in the direction of said first axis, with overlapping ends.
4. The apparatus of claim 2 wherein said exterior rollers are staggered in the direction of said first axis, with overlapping ends.
5. The apparatus in accordance with any one of claims 1 - 4 wherein said shroud is arranged outside of the path of said receiving means.
6. The apparatus of claim 2 or 4 wherein said exterior rollers are arranged around the entire circumference of said drum.
7. The apparatus of claim 1 wherein said interior rollers are arranged to radially confine the helix received on said drum.
8. The apparatus of claim 2 wherein said exterior rollers are arranged to radially support the helix received on said drum.
9. The apparatus of claim 1 or 2 further comprising means for urging and controlling the ordered shifting of said helical formation of rings along the surface of said drum.
10. The apparatus of claim 9 wherein said means for urging and controlling comprises a rotating screw radially spaced from the drum surface and extending in a direction parallel to said first axis.
11. The apparatus of claim 9 wherein said means for urging and controlling comprise a plurality of rollers arranged to pinch an upper region of said helical ring formation against the surface of said drum.