Patent ID: 9321098
Filing Date: 2016-04-26
CPC Classification: B21C,B21J

Claim Text:
1. An upsetting press for upsetting an end of a pipe made of metallic material, said press comprising: a supporting structure, which defines a longitudinal axis of said press and a transversal direction substantially orthogonal to said longitudinal axis, said structure delimiting a working space of said press; first locking means adapted to lock said pipe in a predetermined position along said longitudinal direction; first upsetting means comprising: first die holding means, which support said first half dies moving them from an approaching position, in which said first two half dies are mutually close, and a distancing position, in which said first half dies are distanced, said first die holding means comprising: second locking means for locking said first half dies in a closing position in which said first half dies surround said end defining said first die, said second locking means comprising a crosspiece movable along said longitudinal direction between a locking position, in which said crosspiece exerts a closing force on said first half dies, and a non-locking position, said movable crosspiece comprising an inner portion which defines a tapered surface conforming to the outer surface of said bodies of said first holding members, wherein said first die bolding means are independent with respect to said structure and are movable along said transversal direction between an operating position, in which said first half dies may be closed about said end of said pipe, and at least one non-operating position outside said working space, and wherein when said two first half dies reach the approaching position about the end of said pipe, then said crosspiece of said second locking means is shifted towards the locking position to close and lock the first two half dies in said closing position.