Presses – Reciprocating press construction – With mechanical force multiplier
Patent
1989-05-31
1992-06-23
Coe, Philip R.
Presses
Reciprocating press construction
With mechanical force multiplier
72454, 83631, 100259, 100299, 184 5, B30B 118
Patent
active
051233428
ABSTRACT:
The present invention concerns a mechanical, low-noise press, particularly of the screw type, comprising a tup-bearing ram connected with a driving screw, rotatably connected with a lead nut, which is integrally fixed on the frame supporting the press. The press also comprises sealing means which define, together with the mating surfaces of the screw and of the lead nut, a chamber, having a pre-determined volume, adapted to collect an incompressible medium, such as a lubricating oil, and a circulation mechanism in order to maintain within the chamber a controlled delivery of the medium, which delivery insures the presence of a constant spacing film of medium between the mating surfaces during the operation phase of the press, so as to prevent the direct contact between the screw and the lead nut, thereby absorbing the vibrations and the collisions generated by their interaction.
REFERENCES:
patent: 3482463 (1969-12-01), Huydts et al.
patent: 3817352 (1974-06-01), Bourgeois et al.
patent: 3827354 (1974-08-01), Bredebusch
patent: 4523521 (1985-06-01), Huydts
Coe Philip R.
Gerrity Stephen F.
Vaccari S.p.A.
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