Abstract:
In a rolling mill, a reforming chamber is positioned to receive rings of hot rolled steel rod descending along a vertical path from the delivery end of a conveyor onto a support on an underlying carrier. The carrier has an upstanding stem around which the rings accumulate to form a cylindrical coil. First, interceptor elements operate above the carrier to interrupt the descent of rings, and second interceptor elements supported on the carrier beneath the first interceptor elements operate to subdivide the coil being formed around the stem into upper and lower segments, with a gap therebetween occupied by the second intercepting elements.
Abstract:
An apparatus is disclosed for decelerating and temporarily accumulating a hot rolled product moving longitudinally along a first axis at a first velocity V1. 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 V2 lower than V1 and such that the product is delivered from the exit end as a helical formation of rings and at a third velocity V3 equal to V1−V2. 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 V3. 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.
Abstract:
An apparatus is disclosed for receiving successive bars moving longitudinally along an entry path and for laterally transferring the bars from the entry path to a braking path. The apparatus comprises a run in table having a plurality of rollers arranged to convey the bars along the entry path. A braking surface is arranged between the run in table and the braking path. The braking surface and the rollers of the run in table lie in a reference plane sloping downwardly from the entry path to the braking path. A dividing wall is arranged between the run in table and the braking surface. The dividing wall is adjustable between a raised position projecting above the reference plane to block lateral downward movement of bars from the entry path across the braking surface to the braking path, and a lowered position accommodating such downward movement. A switch is positioned in advance of the dividing wall. The switch has a plurality of guide channels arranged around a common axis. The switch is positioned to successively align individual guide channels with the entry path to thereby direct bars passing therethrough along the entry path while the dividing wall is in its raised position, and is rotatable about its axis to successively realign the individual guide channels with the braking path to thereby direct bars passing therethrough to and along the braking path when the dividing wall is in its lowered position.
Abstract:
An apparatus is disclosed for decelerating and temporarily accumulating a hot rolled product moving longitudinally along a first axis at a first velocity V1. 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 V2 lower than V1 and such that the product is delivered from the exit end as a helical formation of rings and at a third velocity V3 equal to V1-V2. 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 V3. 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.
Abstract:
A pouring reel for forming a long product moving at an incoming velocity into an annular coil comprises a central mast lying on a vertical axis. A cylindrical tub surrounds and cooperates with the mast to form an annular chamber, the bottom of which is closed by a coil plate. An entry pipe is arranged to deliver the product downwardly for accumulation in the chamber as a series of superimposed rings forming the annular coil. A first drive mechanism rotates the tub about the vertical axis, and a second drive mechanism rotates the mast about the same axis. The first and second drive mechanisms are operable independently of each other to thereby permit the tub and the mast to be rotated at surface velocities substantially matching the incoming velocity of the product.The tub and entry pipe may also be vertically adjustable in unison relative to the central mast and coil plate in order to maintain the free fall distance of product being delivered into the chamber at a predetermined substantially constant minimum.
Abstract:
A method is disclosed for continuously rolling a product exiting from an upstream roll stand at a delivery velocity V1 higher than the take in velocity V3 of a downstream roll stand. The excess product resulting from the velocity differential between V1 and V3 is temporarily accumulated between the roll stands.
Abstract:
In a laying head for forming a longitudinally moving hot rolled product into a helix, a tubular quill has a central axis of rotation and a through passageway extending along the central axis from a first end to an opposite second end of the quill. The interior quill surface has a cylindrical section leading from the first end of the passageway to a radially outwardly flared section which in turn leads to the second end of the passageway. A laying pipe is received in the through passageway. The laying pipe has an entry end aligned with the central axis at the first end of the passageway, a curved intermediate portion surrounded by the flared section of the interior quill surface, and an end portion projecting axially from the second end of the passageway to a delivery end spaced radially from the central axis. A first support at the first end of the passageway radially supports the entry end of the laying pipe, and a second support projects axially into the passageway from the second end of the quill to provide support for the curved intermediate portion of the laying pipe.
Abstract:
A flying shear has leader and follower blades rotating in opposite directions about parallel axes located above and below a horizontal plane. The radius of rotation of the leader blade is longer than the radius of rotation of the follower blade. The blades are configured and arranged to coact in a radially overlapping relationship at a cutting zone spaced vertically from the horizontal plane. A switch directs longitudinally moving products such as bars, rods and the like from the horizontal plane across the cutting zone for separation by the rotating blades into leading and trailing segments.
Abstract:
A shear is disclosed for subdividing an elongated product moving longitudinally in a horizontal plane. The shear includes upper and lower continuously rotating blades respectively coacting in a radially overlapping relationship at first and second laterally disposed cutting zones. An upstream switch operates to divert the product laterally across the cutting zones to separate a leading end from an intermediate section in the first cutting zone, and to separate a trailing end from the intermediate section in the second cutting zone.
Abstract:
An apparatus is disclosed for receiving a helical formation of rings of hot rolled steel rod emerging from a laying head, and for depositing the rings on a conveyor for continued transport away from the laying head. The apparatus operates to engage and propel lower portions of the rings towards the conveyor at a first rate of travel, while engaging and propelling upper portions of the rings towards the conveyor at a second rate of travel. The first and second rates of travel are different and selected to cause the rings to topple onto the conveyor in an overlapping offset pattern.