Loading patent…
AssigneeTextilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellschaft
InventorsLudwig Legl, Hellmuth Stachel
Estimating the term…
An apparatus is described for needling a non-woven material with a support (3) which receives at least one needleboard (1) and is drivable in a reciprocating fashion both in the needle-penetration direction (5) as well as the direction of passage (6) of the non-woven material and on which are coupled the connecting rods (10) of two oppositely drivable eccentric drives (8, 9) for the drive in the needle-penetration direction (5) and on which there acts at least one additional eccentric drive (12). In order to provide advantageous constructional conditions it is proposed that the connecting rods (10) of the two oppositely drivable eccentric drives (8, 9) extend inclined in opposite directions with respect to the needle-penetration direction (5), that the additional eccentric drive (12) revolves synchronously with one of the two other eccentric drives (8, 9), that the connecting rod (15) of the additional eccentric drive (12) which is also linked to the support (3) forms with the connecting rod (10) of the synchronously revolving eccentric drive (8) a parallelogram of links for guiding the support (3) and that the eccentric drives (8, 9) which are drivable in opposite directions are provided with a phase shift (φ) or are adjustable with respect to the mutual angular position.
An apparatus for needling a non-woven material with a support which receives at least one needleboard and is drivable in a reciprocating fashion both in the needle-penetration direction as well as the direction of passage of the nonwoven material and on which are coupled the connecting rods of two oppositely drivable eccentric drives for the drive in the needle-penetration direction and on which there acts at least one additional eccentric drive, characterized in that the connecting rods (10) of the two oppositely drivable eccentric drives (8, 9) extend inclined in opposite directions with respect to the needle-penetration direction (5), that the additional eccentric drive (12) revolves synchronously with one of the two other eccentric drives (8, 9), that the connecting rod (15) of the additional eccentric drive (12) which is also linked to the support (3) forms with the connecting rod (10) of the synchronously revolving eccentric drive (8) a parallelogram of links for guiding the support (3) and that the eccentric drives (8, 9) which are drivable in opposite directions are provided with a phase shift (φ) or are adjustable with respect to the mutual angular position.
An apparatus as claimed in one of the claims I to 5, characterized in that the connecting rods (10) are provided on the side of the eccentric drive (8, 9 and 12, 13) which is averted from the needleboard (1).
Dependencies are inferred from the claim text.