Billet centering and control guide for the entry guide of a press-piercing mill
AssigneeInnse Innocenti Santeustacchio S.p.A.
InventorsFilippo Cattaneo, Edgardo Gnecchi
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Abstract
A billet centering and control guide for an entry guide for a PPM, which is of the rectilinear-tunnel type and is formed by two L-shaped portions which are hinged together about an axis parallel to the axis of the guide. The control guide can be opened essentially like a valve to allow the removal of a billet which may be trapped therein.
Claims1
A billet centering and control guide, for an inlet guide of a press piercing mill, which is of rectilinear-tunnel type with a cross-section matching the cross-section of a billet and is of predetermined length, wherein the improvement consists in the guide comprising:
- a base carrying at least one hinge pin;
- a first structure of L-shaped cross-section which is hinged longitudinally at its outer corner about said at least one pin carried by the base;
- a hinge pin carried longitudinally at the free side of one of the limbs of said first L-shaped structure;
- a second structure of L-shaped cross-section which is hinged longitudinally along the free side of one of its limbs about the hinge pin carried by the first structure;
- at least one hydraulic cylinder supported by the first structure for displacing the second structure angularly from a closed position, in which it defines a rectilinear tunnel with the first structure to a second open position in which the tunnel is accessible laterally for a said billet, and
- at least one hydraulic cylinder for angularly displacing the first structure about its hinge on the base from a position in which it rests on the base to a position in which it is supported laterally of the base.
Dependencies are inferred from the claim text.