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AssigneeBarmag Barmer Maschinenfabrik AG
InventorsPeter Dammann, Hans-Peter Berger, Wilfried Mundelein, Manfred Bussmann, Horst Beifuss
Estimating the term…
In the stuffing of synthetic continuous filamentary threads in stuffer boxes, special value is to be placed on the thermal treatment and especially the cooling of the initially crimped filaments. The filaments in the configuration of a compact thread plug, which is formed in the stuffer box, can be wound on a rotatably driven drum in several helical windings, the last thread plug winding can then be disentangled again at the end of the drum, and the finished texturized thread drawn off. The disentangling of the thread plug and the drawing off of the thread is improved by the present invention through an application of axial and/or radial forces or pressures onto the last thread plug winding in the region of the disentangling point. Suitable mechanical and pneumatic devices are provided by the invention for this purpose.
In a process for the thermal treatment of at least one continuously running thread plug as formed from a thread of synthetic filaments in a stuffer crimping box, said thread plug being circumferentially conducted and wound into a closed layer of a plurality of helically coiled windings on a rotationally driven, air-permeable treatment drum, said thread plug also being advanced from the entry end to the exit end of said drum by a device applying pressure in the axial direction of the drum to a first winding at the entry end of said drum, and withdrawing the thread after thermal treatment on said drum at a disentangling point near the exit end of the drum, the improvement which comprises:
In apparatus for the thermal treatment of at least one continuous stuffer-crimped thread plug including at least a stuffer crimping box, a rotationally driven treatment drum of substantially cylindrical configuration and adapted to receive at least said thread plug coiled circumferentially thereon in a closed layer of a plurality of helical windings, said drum having a large number of openings in its cylindrical surface which contacts the thread plug windings, means to transport said thread plug from said stuffer crimping box onto the entry end of said drum, means at the entry end of said drum to advance the closed layer of helical windings axially of the drum toward the exit end of said drum, means to induce a gas flow through the drum openings for treatment of the thread plug, and means to draw off the thread from the last thread plug winding at a disentangling zone near the exit end of said drum, the improvement in combination with said apparatus which comprises:
Dependencies are inferred from the claim text.