Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Plural or complex apparatus
Patent
1987-03-13
1988-08-16
Crane, Daniel C.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
Plural or complex apparatus
72384, 72388, 72420, 72426, B21D 704, B21D 4302
Patent
active
047635061
ABSTRACT:
An automatic tube bending machine, in which, an electric motor is adapted to drive a speed reduction multiple-pulley system which in turn powers a synchronous intermittent feeding device to feed tube pieces piece by piece into a moulding seat from a storage rack, the same pulley system also actuates a flywheel, and this flywheel drives a gear system that then spins a crank shaft having two symmetrical crank arms, which in turn move two face to face arranged splines, then this two splines drive their respective gears engaged therewith, and these gears in turn actuate two L-shaped outward bending moulds to rotate; at the other end of the same crank shaft, it is provided with a bevel gear; engaged with another bevel gear system so to drive another crank shaft, in such a manner, these two crank shafts rotate synchronously in opposite directions; in the meanwhile the latter crank shaft drives a sliding seat, on which is provided with an inward bending mould, located in the opposite side of the two L-shaped opposite outward bending moulds; when a piece of tube is fed to the moulding seat by the feeding device, it is bent into a definite shape by the relatively moved inward bending mould and the two outward bending moulds, located in the opposite side of this inward bending mould.
REFERENCES:
patent: 2565717 (1951-08-01), Brogen
patent: 2964085 (1960-12-01), Ghiringhelli
patent: 3128817 (1964-04-01), Shaver
patent: 3175386 (1965-03-01), Sproul
patent: 3245433 (1966-04-01), Taylor, Jr.
patent: 3438237 (1969-04-01), Sisler
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