Spinning block

Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – For extrusion or injection type shaping means

Patent

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Details

425192R, 425198, 4253822, 425464, B29C 4730

Patent

active

053040520

ABSTRACT:
A spinning block for the melt spinning of polymers, consisting of a melt channel, a coupling which is attached to the spinning bar and a nozzle block casing with a filter element and a spinning nozzle plate. A connector for detachably securing said nozzle block casing to the coupling consists of at least two bolts which are positioned symmetrically and perpendicularly to the axis of spinning, which bolts engage cooperating grooves, of a particular configuration, also positioned symmetrically and concentrically to the spinning axis. The bolts can be fixed to the casing or to the coupling. The grooves are provided in the coupling or the casing to complement the location of the bolts. By rotation of the nozzle block casing with respect to the coupling around the spinning axis, the parts are locked together. Simultaneously, as the bolts slide in the grooves, the melt channel is sealed at the connecting surfaces between the coupling and the nozzle block casing, by means of bushing seals which are expanded, in a pressure-tight manner as the casing and coupling are drawn together.

REFERENCES:
patent: 3480995 (1969-12-01), Lenk
patent: 3762854 (1973-10-01), Kilsdonk
patent: 4493628 (1985-01-01), Lenk
patent: 4696633 (1987-09-01), Lenk et al.
patent: 4801257 (1989-01-01), Lenk

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