Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Extrusion shaping means
Patent
1988-07-26
1991-03-12
Thurlow, Jeffery
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Extrusion shaping means
264310, 264245, 264174, 2642092, 4253823, 425463, 425381, 4251311, 4251331, B29C 4702, B29C 4706
Patent
active
049988700
ABSTRACT:
Apparatus for the extrusion-coating of a core, especially of an electrical conductor, with a sheathing having at least two layers or strips of different materials or differently colored materials, the apparatus having feed conduits for the plasticized materials and outflow passageways through which the core to be extrusion-coated can pass, the outflow passageways being selectively connectable to the feed conduits via a distributor device. In order to avoid the need for cleaning the conduits of the distributor device, the distributor device is formed by a sleeve (8) which is arranged rotatably between end positions in relation to an outer housing (1) having feed conduits (2, 3) for the plasticized materials. The sleeve also has a number of conduits corresponding to the number of materials to be extruded, to connect feed conduits (2, 3) alternately to the outflow cross-sections (15, 20) for the plasticized materials. The sleeve conduits of the rotatable sleeve terminate on the outside of the sleeve (8) and are mutually offset by the same angular amount as corresponding conduits in a fixed sleeve (5) that surrounds rotatable sleeve (8).
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Rosendahl Maschinen Gesellschaft m.b.H.
Thurlow Jeffery
Vargst Mathieu
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