Cutting – Processes – With subsequent handling
Patent
1994-04-18
1996-05-21
Peterson, Kenneth E.
Cutting
Processes
With subsequent handling
83105, 83156, 83337, 83950, B65H 2700
Patent
active
055178871
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a method and to an arrangement for removing an end-part from rapidly moving rolled material, particularly from rolled wire-rod of small diameter. The invention also relates to guide means included in such arrangement.
BACKGROUND OF THE INVENTION
When hot rolling wire-rod, the leading and trailing parts of the rod will have dimension errors and metallurgical faults as a result of uneven cooling. The end-parts of the rod are therefore cut-off and removed from the roller line. This is carried out manually at present and the work involved is manually exacting and must be carried out in a hot and demanding environment and is therefore also physically strenuous.
Several constructions have been proposed for automatically severing and removing the end-parts of hot rolled wire-rod, although none of these constructions have been found to function satisfactorily in practice. The basic problem is one of providing a construction which is able to move a severed part of the wire-rod away from the rolling line positively and with satisfactory reliability in operation.
SUMMARY OF THE INVENTION
The invention relates precisely to such a method and an arrangement for separating defective end-parts automatically from rapidly moving rolled material such that the end-parts will be severed and removed from the rolling line positively and reliably without disturbing production and transportation of the remaining fault-free rolled material rapidly moving through the rolling line.
This object is achieved with an arrangement of the kind defined in the introduction which is characterized in that the arrangement includes a cutting device or end-shears which functions to cut the moving rolled material, a guide means which is located downstream of the end-shears and which has an active state in which a leading end of rolled material fed to the guide means in a first direction is gripped and driven by said guide means and discharged therefrom in a second direction different to the first direction, and an inactive state in which an end of a rolled material entering the guide means in the first direction passes through said guide means without changing direction and without being gripped by said means; and in that said arrangement further includes feed devices which function to feed in said second direction rolled material discharged from the guide means in said second direction in the active state of said guide means.
According to one preferred embodiment, the guide means includes a first rotatable roller whose peripheral surface engages tangentially one side of rolled material moving in the first direction, and a second rotatable roller which is mounted on the opposite side of the rolled material to the first roller and is displaced relative thereto in the downstream direction, wherein the second roller can be moved in said direction towards and away from the first roller between a first, active position in which the smallest distance between the peripheral surfaces of the first and the second roller is smaller than or equal to the diameter of the rolled material which is to pass through the guide means, and a second, inactive position, in which the peripheral surface of the second roller engages tangentially that side of rolled material moving in the first direction which is opposite to that engaged by the first roller, and wherein the rollers are driven rotationally at the same peripheral speeds.
According to a preferred variant of this embodiment, the guide means also includes a third rotationally driven roller which is mounted downstream of and adjacent to the first roller on the same side of the rolled material passing through the guide means in the first direction as the first roller, wherein the peripheral surface of the third roller engages tangentially this side of the rolled material and is positioned relative to the second roller so that in its active position, the smallest distance between the peripheral surfaces of the second and the third roller will be equal to
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Morgardshammar AB
Peterson Kenneth E.
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