Presses – Reciprocating press construction – With material displacing means
Patent
1990-09-21
1992-02-18
Hornsby, Harvey C.
Presses
Reciprocating press construction
With material displacing means
72357, 100229R, 100246, 100252, 100253, 100264, 425354, 425415, B30B 1532, B30B 932
Patent
active
050883992
ABSTRACT:
Pressing apparatus comprising a die made up of a number of segments defining a cavity in which metal swarf is compacted to form a billet. The die segments are held together by one or more sleeves housed in a housing which is mounted on a pedestal which pivots between a first position in which the cavity is aligned with one or more rams which are advanced into the cavity to compact the swarf, and a second position in which the cavity is aligned with gripping devices which grip the ends of the die segments and separate them radially to release the billet after a jacking device mounted on the housing is actuated to move the sleeves in the axial direction and release the die segments. One of the gripping devices may comprise a cylindrical bore through which an empty tube can be fed into the cavity and the other gripping device may similarly comprise a cylindrical bore through which the billet can be fed after it has been ejected from the die cavity. The outer faces of the die segments and the sleeves may be complementarily tapered to assist release of the die segments. The swarf may be compacted in a tube previously inserted in the cavity, the tube constituting a protective jacket around the swarf in the completed billet.
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Cacace Antonino G.
Madeley Robert
Camborne Industries PLC
Gerrity Stephen F.
Hornsby Harvey C.
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