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EP-4267785-B1 - SPINNING PREPARATION MACHINE

EP4267785B1EP 4267785 B1EP4267785 B1EP 4267785B1EP-4267785-B1

Inventors

  • DUSCHNEIT, PEER

Dates

Publication Date
20260513
Application Date
20211130

Claims (15)

  1. Textile machine (1), in particular a cleaner, step cleaner or feeder, having a device (8, 20, 30, 60), wherein the device (8, 20, 30, 60) comprises: • a plurality of cleaning zones (60) - each having an associated opening roll (61) and - configured, on rotation of the associated opening roll (61) in a predetermined direction, · to convey fibre material along the rotational axis of the associated opening roll (61) in a corresponding transport direction and · in so doing to separate foreign materials, - wherein two of the opening rolls (61), which are arranged directly adjacent to one another, in each case form a pair, • an associated transfer zone (8) for each pair of directly adjacent opening rolls (61) of two cleaning zones (60), configured so that the fibre material conveyed by one opening roll (61) of the respective pair to one end of the one opening roll (61) of the respective pair is transferred to an opposite end, seen transversely with respect to the conveying direction, of the other opening roll (61) of the respective pair, from which the fibre material is transported away along its rotational axis, • an inlet (27), which is arranged to convey incoming fibre material to that end of a first opening roll (61) of the opening rolls (61) which is remote from the associated transfer zone (8), directly adjacent to which first opening roll only one of the opening rolls (61) is arranged, and • an outlet (33), which is arranged to transport fibre material away from that end of a last opening roll (61) of the opening rolls (61) which is remote from the associated transfer zone (8), directly adjacent to which last opening roll likewise only one of the opening rolls (61) is arranged, characterised in that the transport directions of the directly adjacent opening rolls (61) are oriented opposite to one another.
  2. Textile machine (1) according to claim 1, wherein each cleaning zone (60) has a fibre guidance zone (62, 65), configured • to guide the fibres along the rotational axis of the associated opening roll (61) and • to let foreign materials out of the transport path along the associated opening roll (61).
  3. Textile machine (1) according to claim 2, wherein at least one guidance zone (62, 65) has a directing zone (65) which is formed and/or arranged spaced apart along an outer circumferential surface of the associated opening roll (61) so that the fibre material, due to the rotation of the associated opening roll (61) and the centrifugal force acting on the fibre material, • is forced towards the directing zone (65) and, • due to the configuration of the directing zone (65), - captured and/or - diverted into the corresponding transport direction.
  4. Textile machine (1) according to claim 3, wherein the directing zone (65) has ribs (65) which each have a wall directed in the opposite direction to the transport direction of the respective opening roll (61), which wall at least in some regions • extends in the direction of the opening roll (61) and, • seen transversely with respect to the corresponding transport direction, - encloses an acute angle or right-angle with the transport direction and/or, - in relation to a direction of rotation of the associated opening roll (61), extends from a front end to the rear end at least partly in the transport direction.
  5. Textile machine (1) according to any one of the preceding claims, wherein at least one opening roll (61) has pins which, seen transversely with respect to the corresponding transport direction, • enclose an acute angle or right-angle with the transport direction and/or, • in relation to a direction of rotation of the at least one opening roll (61), extend from a front end to the rear end at least partly in the transport direction.
  6. Textile machine (1) according to any one of the preceding claims, wherein the transfer zone (8), at least on a side that faces towards the associated two opening rolls (61), is at least in some regions constructed so as to be straight, free of sharp bends and/or curved in the direction of the opening rolls (61).
  7. Textile machine (1) according to any one of the preceding claims, wherein, in the case of each pair of opening rolls (61) the one opening roll (61) is spaced a greater distance from a floor on which the opener has been installed than is the respective other opening roll (61).
  8. Textile machine (1) according to any one of the preceding claims, wherein in the case of at least one pair, an internal cross-section of the associated transfer zone (8) decreases from the one opening roll (61) towards the other opening roll (61).
  9. Textile machine (1) according to any one of the preceding claims, • further having, for each opening roll (61), an associated chamber (68) which encloses the opening roll (61), in which chamber fibre material is transported by the respective opening roll (61) due to its rotation, • wherein the transfer zone (8) - is in the form of a tunnel, - at one end leads into the associated chamber (68) enclosing the one opening roll (61) so that the fibre material transported by the one opening roll (61), due to its rotation and the resulting centrifugal force acting on the transported fibre material as well as due to any flow movement present, automatically passes into the one end of the transfer zone (8), and - at the other end leads into the other chamber (68) enclosing the other opening roll (61) so that the fibre material coming from the one opening roll (61), due to its speed, automatically passes into the other chamber (68).
  10. Textile machine (1) according to claim 9, wherein a transition between an inner side of at least one of the two chambers (48, 68), which inner side faces towards the respective enclosed opening roll (61), and the transfer zone (8) is constructed so as to be free of sharp bends.
  11. Textile machine (1) according to claim 9 or 10, • further having a discharging zone (40) with - a discharge chamber (48) for each chamber (68) and - a discharge pipe (44, 45), • wherein - each discharge chamber (48) at one end leads into the discharge pipe (44, 45) and - at an end, opposite the one end, of each discharge chamber (48) there is arranged a grid zone (62) which separates the respective discharge chamber (48) from an associated chamber (68) enclosing the respective opening roll (61), and • the discharge pipe (44, 45) - has a discharge opening, which is adjoined by a discharging pipe (41), and - has a transport zone (42 - 48), configured and arranged to transport material coming from the adjoining discharge chambers (48, 48) to the discharge opening.
  12. Textile machine according to claim 11, wherein the one ends of the discharge chambers (48) are spaced a smaller distance from the floor than are the other ends thereof.
  13. Textile machine (1) according to either one of claims 11 and 12, wherein the discharge pipe (44) is in the form of a pipe that is open at both ends, the one ends of the associated chambers (68, 68) leading into the wall (47) forming the pipe-like cross-section of the discharge pipe.
  14. Textile machine (1) according to claim 13, wherein • the discharge zone (40) - has a conveyor wheel (42) which is arranged in the discharge pipe (44) so that the rotational axis of the conveyor wheel (42) extends along the longitudinal extent and transversely with respect to the openings into the adjoining chambers (48), - comprises a drive zone (46), configured to set the conveyor wheel (42) in rotation, and - the conveyor wheel (42) is in the form of · a bucket wheel (42) or · a screw conveyor.
  15. Textile machine (1) according to any one of claims 9 to 14, wherein the chamber (68) is bounded on one side by a wall of a housing (2) of the textile machine (1) that is closest to a transfer zone (8), which wall has at least one through-opening (6, 7) which is provided in the region of the opening roll (61) housed in the respective chamber.

Description

The invention relates to a textile machine according to the preamble of claim 1 in the area of spinning preparation. Such textile machines are known. They serve to separate incoming fiber material (fiber flakes, possibly with other foreign material) from that foreign material from the fiber material released by the bale opener, which could cause damage to the downstream textile machines, and to open the fiber flakes and transport them to a downstream textile machine such as a mixer. From the EP 0 818 566 A1 A device for opening and cleaning fibers is known. The device comprises a first and a second cylinder. The two cylinders are arranged with their axes horizontally and parallel, but offset from each other, so that the fibers are first forced to traverse a helical path around the cylinder to reach a transfer area between the two cylinders, in which the fiber stream is directed to the subsequent cylinder. The CN 101 842 527 B Disclosure reveals an opener with two chambers, each containing a rotating opening roller. An inlet line simultaneously feeds the fibers to be processed into the first and second chambers. The EP 2 554 726 B1 reveals an opener with a grate to remove foreign material in the form of shells and dirt from a container to be opened. to separate fiber material. In technical terms, this is a cleaner. This cleaner includes a feeder. The feeder splits the incoming fiber-air stream so that both partial streams meet the first opening roller at a relatively short distance from the center. Due to its rotation and the guide elements along its outer circumference, the first opening roller transports the incoming fiber material from these points of impact outwards in opposite directions along its axis of rotation towards its two ends. The fiber material is then transferred to the opposite end of a second opening roller. The second opening roller, due to its rotation, transports... and, in turn, existing guide elements along the outer circumference of this opening roller direct the fiber material transferred from the first opening roller from its ends inwards towards its center in two opposing directions along its axis of rotation. The fiber material thus combined is then discharged via an outlet to a downstream textile machine. Furthermore, a grate with a rotary valve located below it is arranged below each opening roller to separate the foreign material that is separated. A disadvantage of this cleaner is, firstly, that two transfer points are required between the pair of opening rollers, which complicates the design and increases costs. Secondly, the division into two partial streams requires a divider, which further increases the cost. The provision of two rotary valves further increases the cost of this machine. An air cushion is necessary to divide the fiber stream at the first opening roller. If this cushion breaks, it is impossible to predict where the fiber material will move. Furthermore, it is known that the fiber material is moved along the opening rollers by means of air. If fibrous material accumulates at one end of the first opening roller, the airflow previously directed there is diverted to the other end of the roller. This results in less or no air flowing to the accumulated fibrous material. Consequently, the fibrous material gradually accumulates in this direction, so that ultimately only half of the first opening roller remains effective. In addition to the problem of material buildup, the productivity of this type of cleaner drops to approximately half its maximum capacity. Finally, this cleaner consumes a relatively large amount of energy due to the numerous driven components. The purpose of the invention is to address the aforementioned disadvantages. This problem is solved by the subject matter of independent claim 1. Advantageous embodiments are specified in the dependent claims. According to the invention, a textile machine is provided with a device. That is, this device is integrated into or attached to the textile machine as a component. The device comprises a plurality of cleaning sections, each with an associated opening roller. Each cleaning section is designed to convey fiber material in a corresponding transport direction along the axis of rotation of the associated opening roller in a predetermined direction when the associated opening roller rotates in that direction, thereby separating foreign materials. For each pair of immediately adjacent opening rollers of two cleaning sections, the device includes an associated transfer section. Each transfer section is designed such that the fiber material conveyed by one opening roller is transferred at one end of the first opening roller to an end of the other opening roller opposite the direction of transport, i.e., after cleaning by this opening roller, it enters the working area of the subsequent opening roller. The device also has an inlet designed to convey incoming fiber material to the end of a first opening roller f