Textilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellschaft

Textilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellscaft

Karl Müller

An apparatus for needling a non-woven material is described, comprising at least one needleboard () which is drivable in a reciprocating manner in the needle-penetration direction () as well as in the direction of the passage () of the non-woven material, comprising an eccentric drive for the needleboard () which comprises two parallel eccentric shafts () which are drivable in opposite directions and assume a different angular position (&#x3c6;), and couplers () which connect the connecting rods () of the two eccentric shafts () in an articulated manner and comprise a guide arm () which is rigidly connected with the same, and a lifting guide means () for the guide arms () which forms a swiveling axis () for the guide arms () which is parallel to the eccentric shafts (). In order to provide advantageous constructional conditions it is proposed that either the guide arms or the couplers carry the needleboard.

Apparatus for needling a non-woven material

A needling apparatus for making a patterned felt web comprises at least one needle board, which is connected to a needle board drive, a feed drive for feeding the felt web through a felt guide between a felt support and a stripper, and means for adjusting the stroke position of the needle board relative to the felt guide between an idle stroke position and a working stroke position for the largest depth of penetration. To permit an increase of the average feeding speed along a series of patterns, the feeding speed imparted to the feed web by the feed drive is adapted to be controlled in dependence on the stroke position of the needle board relative to the felt guide in accordance with a predetermined coordination between the stroke position of the needle board and the feeding speed of the felt web.

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Wels, Austria

Karl Müller