Abstract: An apparatus is described for needling a fibrous web having at least one needle bar. On its underside, the needle bar carries a needle board with a multiplicity of needles, wherein the needle bar is guided via a movably held bar carrier. The bar carrier is driven in an oscillating manner with a superimposed horizontal and vertical movement by a crank mechanism drive. To this end, a phase shifting device is provided, by which the crankshafts of the crank mechanism drive can be adjusted depending on the phase relation. Here, the movement of the bar carrier is guided by a guide device. In order to obtain stable guidance with high flexibility in every situation, according to the invention the guide device is formed by a steering rod which is connected at one end to the bar carrier by a rotary joint and which is coupled with the other end to a steering gear by a second rotary joint.

Abstract: The invention relates to a device for needling a fibrous web having at least one needle bar. The needle bar carries a needle board on the bottom thereof having a plurality of needles, the needle bar being guided by means of a moveably mounted bar carrier. The bar carrier is driven by a vertical drive in an oscillating manner in up and down movements. For straight guidance of the bar carrier, a guiding device is provided, which has at least one rocker held at the end by a rotary bearing of a machine frame. In order to obtain the straightest possible guide path in the bar carrier, according to the invention the opposite end of the rocker and the bar carrier are connected by a plurality of members of a coupling kinematic mechanism.

Abstract: The invention relates to a device for needling a fibrous web having at least one needle bar. The needle bar carries a needle board on the bottom thereof having a plurality of needles, the needle bar being guided by means of a moveably mounted bar carrier. The bar carrier is driven by a vertical drive in an oscillating manner in up and down movements. For straight guidance of the bar carrier, a guiding device is provided, which has at least one rocker held at the end by a rotary bearing of a machine frame. In order to obtain the straightest possible guide path in the bar carrier, according to the invention the opposite end of the rocker and the bar carrier are connected by a plurality of members of a coupling kinematic mechanism.

Abstract: The invention relates to a device for needling a fibrous web having at least one needle bar. The needle bar carries a needle board on the bottom thereof having a plurality of needles, the needle bar being guided by means of a moveably mounted bar carrier. The bar carrier is driven by a vertical drive in an oscillating manner in up and down movements. For straight guidance of the bar carrier, a guiding device is provided, which has at least one rocker held at the end by a rotary bearing of a machine frame. In order to obtain the straightest possible guide path in the bar carrier, according to the invention the opposite end of the rocker and the bar carrier are connected by a plurality of members of a coupling kinematic mechanism.

Abstract: The invention relates to a device for needling a web of fiber, said device comprising at least one driven needle beam. A vertical reciprocal movement of the needle beam is carried out by a vertical drive unit and a superposed horizontal reciprocal movement is carried out by a horizontal drive unit or due to a phase adjustment by the vertical drive unit. A weight balancing device is provided for balancing the inertia forces of the crank mechanisms. In order to be able to balance both vertical and horizontal inertia forces in a simple manner, the weight balancing device is formed by at least one balance weight which is associated with the crank mechanism of the vertical drive unit and which is set-off by an angle in the range of <180° from an eccentric element of the crank mechanism.

Abstract: The invention relates to a device for needling a nonwoven web having on the base thereof at least one needle bar comprising a needle board having a plurality of needles. The needle bar is held by a bar carrier on which a vertical drive engages for oscillating motion of the bar carrier for an up and down movement. A superimposed horizontal drive is also associated with the bar carrier, by which a back-and-forth movement is induced. The horizontal drive has two eccentric drives coupled to a horizontal guide. The eccentric drives are each formed by a connecting rod and a crankshaft coupled to a connecting head of the connecting rod. According to the invention, the connecting rods are coupled to the horizontal guide with the connecting rod ends thereof in a diagonal orientation, the center axes of the connecting rods forming an angle.

Abstract: An apparatus is described for needling a fibrous web having at least one needle bar. On its underside, the needle bar carries a needle board with a multiplicity of needles, wherein the needle bar is guided via a movably held bar carrier. The bar carrier is driven in an oscillating manner with a superimposed horizontal and vertical movement by a crank mechanism drive. To this end, a phase shifting device is provided, by which the crankshafts of the crank mechanism drive can be adjusted depending on the phase relation. Here, the movement of the bar carrier is guided by a guide device. In order to obtain stable guidance with high flexibility in every situation, according to the invention the guide device is formed by a steering rod which is connected at one end to the bar carrier by a rotary joint and which is coupled with the other end to a steering gear by a second rotary joint.

Abstract: The invention relates to a device for needling a web of fiber, said device comprising at least one driven needle beam. A vertical reciprocal movement of the needle beam is carried out by a vertical drive unit and a superposed horizontal reciprocal movement is carried out by a horizontal drive unit or due to a phase adjustment by the vertical drive unit. A weight balancing device is provided for balancing the inertia forces of the crank mechanisms. In order to be able to balance both vertical and horizontal inertia forces in a simple manner, the weight balancing device is formed by at least one balance weight which is asso ciated with the crank mechanism of the vertical drive unit and which is set-off by an angle in the range of <180° from an eccentric element of the crank mechanism.

Abstract: The invention relates to a device for needling a fibrous web having at least one needle bar. The needle bar carries a needle board on the bottom thereof having a plurality of needles, the needle bar being guided by means of a moveably mounted bar carrier. The bar carrier is driven by a vertical drive in an oscillating manner in up and down movements. For straight guidance of the bar carrier, a guiding device is provided, which has at least one rocker held at the end by a rotary bearing of a machine frame. In order to obtain the straightest possible guide path in the bar carrier, according to the invention the opposite end of the rocker and the bar carrier are connected by a plurality of members of a coupling kinematic mechanism.

Abstract: The invention relates to a device for needling a nonwoven web having on the base thereof at least one needle bar comprising a needle board having a plurality of needles. The needle bar is held by a bar carrier on which a vertical drive engages for oscillating motion of the bar carrier for an up and down movement. A superimposed horizontal drive is also associated with the bar carrier, by which a back-and-forth movement is induced. The horizontal drive has two eccentric drives coupled to a horizontal guide. The eccentric drives are each formed by a connecting rod and a crankshaft coupled to a connecting head of the connecting rod. According to the invention, the connecting rods are coupled to the horizontal guide with the connecting rod ends thereof in a diagonal orientation, the center axes of the connecting rods forming an angle.

Abstract: An apparatus for needling a non-woven web. The apparatus comprises at least one needle beam. The needle beam, the lower side of which comprises a needle board having a plurality of needles, is held by a beam support, which is guided by means of a vertical drive for an oscillating movement in an upward and downward movement and is guided by means of a horizontal drive for an oscillating movement in a reciprocating movement. At least two driven eccentric shafts and several connecting rods, which are assigned to the eccentric shafts and the free ends of which are coupled to the beam support, are provided as the vertical drive. The horizontal drive comprises at least one horizontal link, one end of which is connected to the beam support and the opposite end of which is coupled to a gear kinematics, which comprises an eccentric drive.

Abstract: An apparatus for needling a non-woven web. The apparatus comprises at least one needle beam. The needle beam, the lower side of which comprises a needle board having a plurality of needles, is held by a beam support, which is guided by means of a vertical drive for an oscillating movement in an upward and downward movement and is guided by means of a horizontal drive for an oscillating movement in a reciprocating movement. At least two driven eccentric shafts and several connecting rods, which are assigned to the eccentric shafts and the free ends of which are coupled to the beam support, are provided as the vertical drive. The horizontal drive comprises at least one horizontal link, one end of which is connected to the beam support and the opposite end of which is coupled to a gear kinematics, which comprises an eccentric drive.

Abstract: An apparatus is described for needling a non-woven material with a support (1) for at least one needleboard (3) with at least two eccentric drives (7, 8) which are drivably connected with the support (1) via connecting rods (9, 10) and with a device for adjusting the mutual angular position of the two eccentric drives (7, 8). In order to provide advantageous constructional conditions it is proposed that the device for adjusting the mutual angular position of the two eccentric drives (7, 8) consists of a superposition gear (17) in a gear train (11) for the drive connection of the two eccentric drives (7, 8).

Abstract: An apparatus is described for needling a non-woven material with a support (1) receiving at least one needleboard (3), which support 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 (9, 10) of two oppositely drivable eccentric drives (7, 8) for the drive in the needle-penetration direction (5) and on which acts at least one additional eccentric drive (7, 8), and with a device for setting the movement component of the support in the direction of passage (6) of the non-woven material.

Abstract: An apparatus is described for needling a non-woven material with a support (1) receiving at least one needleboard (3), which support 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 (9, 10) of two oppositely drivable eccentric drives (7, 8) for the drive in the needle-penetration direction (5) and on which acts at least one additional eccentric drive (7, 8), and with a device for setting the movement component of the support in the direction of passage (6) of the non-woven material.

Abstract: An apparatus is described for needling a non-woven material with a support (1) for at least one needleboard (3) with at least two eccentric drives (7, 8) which are drivably connected with the support (1) via connecting rods (9, 10) and with a device for adjusting the mutual angular position of the two eccentric drives (7, 8). In order to provide advantageous constructional conditions it is proposed that the device for adjusting the mutual angular position of the two eccentric drives (7, 8) consists of a superposition gear (17) in a gear train (11) for the drive connection of the two eccentric drives (7, 8).