Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – And means to form or reshape preform
Patent
1980-05-02
1981-09-15
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
And means to form or reshape preform
425115, 425363, B29C 302
Patent
active
042894662
ABSTRACT:
An apparatus for continuously manufacturing hollow tubular elements has an elongated central core with one end portion connectable with a drive for rotation about its longitudinal axis, a plurality of supporting elements projecting circumferentially outwardly from the central core and longitudinally spaced along the same, a plurality of guides means each provided on the supporting element and axially aligned with one another, a cam element forming a cam surface arranged circumferentially about the longitudinal axis of the core and extending in a plane which is helical with respect to the plane transverse to the axis, and a plurality of rod elements forming a substantially cylindrical molding surface, arranged in side-by-side relationship, and extending longitudinally over the entire length of the central core in a circumferentially spaced relationship with the latter. The rod elements are aligned on the supporting elements and guided in an individual cyclic displacement by the guides and each arranged immediately following the cam element and urged against the cam surface of the latter. The cam element with the cam surface is supported in a non-revolving manner on the central core so as to remain immovable during the rotation of the central core.
REFERENCES:
patent: 3809514 (1974-05-01), Nunez
Flint, Jr. J. Howard
Striker Michael J.
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