Forming machine with ram-side ejector mechanism

Details Forming machine with ram-side ejector mechanism Forming machine with ram-side ejector mechanism

1987-01-20

1988-04-05

Larson, Lowell A.

Metal deforming

With means to handle work or product

Including product handling means

72345, 10 11E, 425422, B21K 2700, B21D 4504

Patent

active

047350806

ABSTRACT:
A forming machine comprises an eccentric drive mechanism for executing a stroke movement of a displaceable ram mounted for movement on a machine frame. A ram-side ejector mechanism is fixed on the ram for expelling workpieces from a tool secured to the ram. The ram-side ejector mechanism includes a longitudinally displaceable ejector pin, a two-armed lever member pivotally supported by the ram and cam disks mounted on a rotatable cam shaft. The cam disks are effective to pivotally displace the lever member for causing the longitudinal displacement of the ejector pin member. The rotatable shaft carries the cam disk mounted on the displaceable ram with the lever member. A gear linkage mechanism includes a rotational transfer shaft mounted to the machine frame for driving the cam shaft in response to operation of the eccentric drive assembly. A synchronizing coupling assembly is disposed between the cam shaft and the rotational transfer shaft to effect conformal transfer of rotation of the shafts which are offset with respect to each other.

REFERENCES:
patent: 3802013 (1974-04-01), Nebendorf et al.
patent: 3927549 (1975-12-01), Dycke et al.
patent: 4296625 (1981-10-01), Weller et al.
patent: 4552525 (1985-11-01), Stehr

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