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US 6,634,069 B2Granted
Apparatus for feeding a fiber fleece
AssigneeOskar Dilo Maschinenfabrik KG
InventorsJohann Philipp Dilo, Eugen Gutsche
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AssigneeOskar Dilo Maschinenfabrik KG
InventorsJohann Philipp Dilo, Eugen Gutsche
Estimating the term…
In an apparatus for feeding a fiber fleece web to a needling machine, a compacting means is arranged between a pre-compressor and a supply roller pair, said compacting means having rollers provided with teeth at their circumference. These rollers compress the fiber fleece and effect a partial re-orientation of the fibers from the horizontal into the vertical, which contributes to substantially maintaining the compacting of the fiber fleece. The compacting means may together with the supply roller pair form a drawing zone for the fiber fleece web. The compacting means preferably includes at least one roller triple that consists of two lower rollers arranged at a low mutual distance in juxtaposition, and upper rollers bridging over the gusset between the lower rollers. The rollers of the roller triple are provided on their periphery with all-steel armaments, and the supply rollers are preferably also provided with all-steel armaments and have higher speeds of rotation than the rollers of the roller triple. In an alternative embodiment, the means comprises at least one roller provided with all-steel armaments an a trough opposing the roller, said trough forming with the roller a gap narrowing in the direction of rotation of the roller. In this gap, the fiber fleece web passed between the roller and the dent is clamped. The discharge end of the gap opposes the supply roller pair, which is preferably driven at a high speed of rotation than said roller that opposes the trough.
In an apparatus for feeding a fiber fleece web to a needling zone of a needling machine, the apparatus including (a) a pre-compressor having a lower endless moving belt and an upper endless moving pre-compression belt arranged above the lower belt and forming therewith a gap which narrows in the direction of movement of a fiber fleece web to be fed therebetween, and (b) a supply roller pair arranged in front of the needling zone of the needling machine, the supply roller pair including upper and lower supply rollers forming a gap therebetween and being provided with non-rotating guide fingers each of which bridges over a gusset gap between the supply rollers and the needling machine, the improvement comprising a compacting device between the pre-compressor and the supply roller pair, the compacting device including at least two compacting rollers forming a compacting gap through which the fleece web is fed, at least one of the compacting rollers being provided on its periphery with all-steel armaments or being formed as a disk roller.
In an apparatus for feeding a fiber fleece web to a needling zone of a needling machine, the apparatus including (a) a pre-compressor having a lower endless moving belt and an upper endless moving pre-compression belt arranged above the lower belt and forming therewith a gap which narrows in the direction of movement of a fiber fleece web to be fed therebetween, and (b) a supply roller pair arranged in front of the needling zone of the needling machine, the supply roller pair including upper and lower supply rollers forming a gap therebetween and being provided with non-rotating guide fingers each of which bridges over a gusset gap between the supply rollers and the needling machine, the improvement comprising a compacting device between the pre-compressor and the supply roller pair, the compacting device including (1) a compacting roller which is provided on its periphery with all-steel armaments or is formed as a disk roller and (2) a trough member opposing the compacting roller and forming therewith a compacting gap through which the fleece web is fed, the compacting gap having a discharge end facing the supply roller pair and being progressively more constricting in the direction of rotation of the compacting roller, thereby to compact the fiber fleece web.
Dependencies are inferred from the claim text.