EP3239371B1 - Étaleur-nappeur - Google Patents

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Publication number
EP3239371B1
EP3239371B1 EP16000972.6A EP16000972A EP3239371B1 EP 3239371 B1 EP3239371 B1 EP 3239371B1 EP 16000972 A EP16000972 A EP 16000972A EP 3239371 B1 EP3239371 B1 EP 3239371B1
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EP
European Patent Office
Prior art keywords
recesses
fibrous web
conveyor belt
drive roll
laying device
Prior art date
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EP16000972.6A
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German (de)
English (en)
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EP3239371A1 (fr
Inventor
Johann Philipp Dilo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oskar Dilo Maschinenfabrik KG
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Oskar Dilo Maschinenfabrik KG
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Priority to EP16000972.6A priority Critical patent/EP3239371B1/fr
Publication of EP3239371A1 publication Critical patent/EP3239371A1/fr
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Publication of EP3239371B1 publication Critical patent/EP3239371B1/fr
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G25/00—Lap-forming devices not integral with machines specified above

Definitions

  • the present invention relates to a fleece layer for laying a fleece from a card web.
  • Fleece layers are used to deposit the card web produced by a card as evenly as possible on a delivery conveyor belt in multi-layered layers to form a fleece.
  • the card web is usually first guided through an upper carriage and from there to a laying carriage, through the laying gap of which the card web is deposited onto the delivery conveyor belt.
  • At least two pile conveyor belts are used to guide the card web through the fleece layer, which run through the fleece layer over several deflection rollers in the machine frame of the fleece layer, in the upper carriage and in the laying carriage.
  • Each pile conveyor belt is usually driven by at least one drive roller. The movements of the pile conveyor belts, the upper carriage and the laying carriage are controlled in a coordinated manner.
  • Such fleece layers are for example from EP 0 865 521 A1 and the EP 1 816 243 A1 known.
  • the power transmission for driving the pile conveyor belts usually takes place by means of frictional engagement between the drive rollers and the pile conveyor belts.
  • the drive rollers are fixedly mounted in the machine frame of the web laying machine, are driven in rotation by at least one drive and are partially wrapped by the pile conveyor belt to be driven.
  • the drive rollers generally have a rubberized jacket surface in order to increase the friction between the drive rollers and the pile conveyor belts.
  • Pile conveyor belts can be designed as a sieve belt if suction of the card web through the corresponding pile conveyor belt is desired. Otherwise, pile conveyor belts can also be made air-impermeable. If such air-impermeable pile conveyor belts are used, the pretensioning of these pile conveyor belts is usually increased at higher conveying speeds in order to divert the drag air that gets between a pile conveyor belt and a drive roller to the side and thus prevent the pile conveyor belt from floating on the drive roller.
  • a difference of more than one meter between the surface path of the drive roller and the surface path of the pile conveyor belt can be determined, for example, per laying carriage travel with a travel movement of the laying carriage of approx. 7 meters.
  • a kinematic control of the pile conveyor belt and the associated control of the exact speed of the pile conveyor belt and the card web located on it are not possible and, for example, deviations from the nominal weight per unit area of the nonwoven web to be laid occur.
  • the invention is therefore based on the object of providing a fleece layer in which the drag air between the drive rollers and the pile conveyor belts can be reliably removed even at high drive speeds of air-impermeable pile conveyor belts and the kinematic control of the fleece laying process is maintained.
  • a fleece layer for laying a fleece from a card web comprises a reciprocating upper carriage through which the card web is guided, a laying carriage that can be moved back and forth in the same direction as the upper carriage, through which the card web coming from the upper carriage is guided and which leads to the At least one first pile conveyor belt for guiding the card web to the upper carriage and at least one second pile conveyor belt for guiding the card web from the upper carriage to the laying carriage, at least one of the at least one first and second pile conveyor belt being an air-impermeable pile conveyor belt.
  • the fleece layer also comprises at least one first drive roller for driving the at least one first pile conveyor belt and at least one second drive roller for driving the at least one second pile conveyor belt.
  • At least one of the at least one first and second drive roller has a plurality of groove-shaped recesses which are formed in a lateral surface of the at least one of the at least one first and second drive roller and the at least one of the at least one first and second drive roller at least partially circulate, the recesses being covered at least in sections by the at least one air-impermeable pile conveyor belt.
  • the at least one air-impermeable pile conveyor belt preferably wraps around at least one of the at least one first and second drive roller in an angular range that is between 45 ° and 270 °, more preferably between 90 ° and 240 °, and even more preferably between 180 ° and 225 °.
  • a sufficiently large contact area is thus provided between the at least one air-impermeable pile conveyor belt and the drive roller assigned to it in order to optimize the power transmission between these two components for the purpose of driving the at least one air-impermeable pile conveyor belt.
  • a maximum circumferential speed of the at least one of the at least one first and second drive roller is at least 200 m / min, more preferably at least 300 m / min, even more preferably at least 400 m / min.
  • the recesses are annular and each of the plurality of recesses completely surrounds the at least one of the at least one first and second drive roller. This ensures that in every angular position of the drive roller and regardless of the angular range in which the air-impermeable pile conveyor belt wraps around the drive roller, groove-shaped recesses are arranged in the region of the drive roller which is covered by the air-impermeable pile conveyor belt, and these recesses are each far enough extend along the outer surface of the drive roller in order to ensure the reliable removal of air from this area in every angular position.
  • Each annular recess preferably defines a cylindrical disk which is arranged perpendicular to a longitudinal axis of the at least one of the at least one first and second drive roller.
  • the groove-shaped recesses can be produced in the drive roller in a particularly simple manner.
  • the cylinder disks defined by the recesses are then designed concentrically with the drive roller.
  • each annular recess preferably defines a cylindrical disk which is arranged obliquely to a longitudinal axis of the at least one of the at least one first and second drive roller.
  • the axis of the cylinder disks then intersects the longitudinal axis of the drive roller at an angle which is less than 90 °, preferably less than 45 °.
  • annular recesses in a first half of the outer surface of the drive roller are inclined in a first direction and the recesses in a second half of the drive roller are inclined in a second direction opposite to the first direction. In this way it is achieved that the contact points between the drive roller and the pile conveyor belt move axially during one revolution of the drive roller, so that an even load on the inside of the pile conveyor belt is guaranteed. If the annular recesses or the cylinder disks defined by them are arranged obliquely in one direction with respect to the longitudinal axis of the drive roller, this can lead to a lateral or axial displacement of the pile conveyor belt under certain circumstances.
  • the recesses are in a first half of the drive roller is inclined opposite the recesses in a second half of the drive roller, these can be designed in such a way that the resulting forces on the pile conveyor belt are canceled out and the pile conveyor belt remains on the track provided for it.
  • each annular recess runs sinusoidally or in a zigzag shape along the circumference of the at least one of the at least one first and second drive roller. In this way, uniform loading of the inside of the pile conveyor belt is ensured without causing a lateral displacement of the pile conveyor belt with respect to the drive roller.
  • the recesses have a rectangular or U-shaped cross section in a cross section of the at least one of the at least one first and second drive roller along their longitudinal axis.
  • Profiles of this type are particularly inexpensive to produce due to the simplicity of the tools required for production.
  • the width of the recesses is preferably between 1 mm and 10 mm, preferably between 1.5 mm and 6 mm, and more preferably between 2 mm and 4 mm.
  • the depth of the recesses is preferably between 0.5 mm and 6 mm, preferably between 0.7 mm and 4 mm, and more preferably between 1 mm and 2 mm.
  • a division of two adjacent recesses in the longitudinal direction of the at least one of the at least one first and second drive roller is preferably between 2 mm and 30 mm, preferably between 5 mm and 20 mm, and more preferably between 11 mm and 15 mm.
  • the number of recesses in the longitudinal direction the drive roller can be kept as low as possible in order to limit the manufacturing costs.
  • a sufficient number of recesses is thus provided in order to reliably discharge the air between the air-impermeable pile conveyor belt and the drive roller.
  • the fleece layer comprises a plurality of passive deflection rollers for guiding the at least one first pile conveyor belt and the at least one second pile conveyor belt in the machine frame of the fleece layer, in the upper carriage and in the laying carriage, at least one of these deflection rollers having a plurality of groove-shaped recesses which are formed in a lateral surface of the at least one deflection roller and the at least one deflection roller at least partially revolve, the recesses being covered at least in sections by the at least one air-impermeable pile conveyor belt.
  • FIG. 4 shows a schematic view of a fleece layer 40 in a front view in relation to the delivery conveyor belt 1.
  • Fig. 1 an endlessly revolving delivery conveyor belt 1, which is intended to transport away a laid fleece in a transport direction running perpendicular to the plane of the drawing.
  • An upper deflecting roller 2 of the guide devices of the delivery conveyor belt 1 is shown in dash-dotted lines.
  • a laying carriage 3 can be moved back and forth on rails (not shown) transversely to the transport direction of the delivery conveyor belt 1.
  • two deflection rollers 4 and 5 are freely rotatably mounted.
  • the first deflecting roller 4 is partially wrapped by a third pile conveyor belt 6, which has a lower strand, which runs closely above the delivery conveyor belt 1 to a third drive roller 7, via a further stationary deflecting roller 8 and to a deflecting roller 9, which runs in a first tensioning carriage 10 is freely rotatably mounted, which can be moved back and forth on rails (not shown) below the delivery conveyor belt 1 transversely to its transport direction. From the deflecting roller 9 stored in the tensioning carriage 10, said third pile conveyor belt 6 runs over two further stationary deflecting rollers 8 back to the laying carriage 3.
  • the third drive roller 7 is coupled to a motor (not shown) and is intended to drive the third pile conveyor belt 6 in different directions to drive.
  • the other deflection roller 5, which is freely rotatably mounted in the laying carriage 3, is partially wrapped by a second pile conveyor belt 11, which is guided via a second drive roller 12 and a stationary deflection roller 13 to a second deflection roller 14 mounted in the first tensioning carriage 10, which is partially wrapped around by the second pile conveyor belt 11, from where the second pile conveyor belt 11 runs back to the laying carriage 3 via further stationary deflecting rollers 13.
  • the second pile conveyor belt 11 has a lower strand which runs closely above the delivery conveyor belt 1.
  • the second drive roller 12 is coupled to a motor (not shown) and is intended to drive the second web conveyor belt 11 in different directions.
  • a chain or a toothed belt 15 is attached to the laying carriage 3 and runs over a drive gear 16 connected to a motor (not shown) and a deflection wheel 17. With the help of these drive devices, the laying carriage 3 can be moved back and forth above the delivery conveyor belt 1 transversely to its transport direction.
  • an upper carriage 18 is mounted in the machine frame of the web layer 40 so that it can be moved back and forth transversely to the transport direction of the delivery conveyor 1 and in the same direction as the laying carriage 3 on rails (not shown).
  • the upper carriage 18 has an upper deflecting roller 19 and a lower deflecting roller 20, which are laterally offset from one another.
  • a first pile conveyor belt 21 runs over these two deflecting rollers 19 and 20. In the area which is delimited by the two deflecting rollers 19 and 20 in the upper carriage 18, the first pile conveyor belt 21 runs obliquely downwards.
  • the first pile conveyor belt 21 runs parallel to the upper runs of the second and third pile conveyor belts 11, 6. It is via a deflecting roller 22 that is fixedly mounted in the machine frame (hereinafter "stationary") and from there via an in A deflection roller 24 mounted on a second tension carriage 23, in order to then run over a stationary, motor-driven first drive roller 25 before it reaches the upper carriage 18 again.
  • the upper carriage 18 and the second tension carriage 23 are connected to one another via a chain or a toothed belt 26, which runs via a drive gear 27 connected to a motor (not shown) and a deflection wheel 28, which are mounted in the machine frame.
  • a feed belt 29 running diagonally upwards, which feeds a card web to be laid (not shown) to the first pile conveyor belt 21.
  • the first pile conveyor belt 21 and the second pile conveyor belt 11 are guided parallel to one another at a narrow distance, so that a card web brought up by the first pile conveyor belt 21 is between the upper carriage 18 and the laying carriage 3 is sandwiched by the first pile conveyor belt 21 and the second pile conveyor belt 11.
  • the card web is supported by the second pile conveyor belt 11.
  • At least one of the pile conveyor belts 6, 11, 21 is designed to be air-impermeable.
  • the first tensioning carriage 10 executes an opposite movement because the loop lengths of the pile conveyor belts 6 and 11 are constant. Furthermore, the superstructure 18 and its associated second tensioning carriage 23 move in opposite directions during operation because they are connected to one another in a non-positive manner by the chain or the toothed belt 26. The second tension carriage 23 is necessary in order to keep the loop length of the first pile conveyor belt 21 constant.
  • the kinematics of the web layer 40 is designed in such a way that the movements of the laying carriage 3 and upper carriage 18 are coordinated with one another in such a way that when the card web is fed via the feed belt 29 at a uniform speed, the card web is deposited in a controlled manner without stretching or compression within the web layer 40 shown can take place on the delivery conveyor belt 1. This also takes into account the fact that the laying carriage 3 has to be braked to a standstill in the area of its movement reversal position and then accelerated again.
  • card web buffering can be carried out within the nonwoven layer 40 in a known manner.
  • the buffering which is necessary to compensate for the fluctuating laying carriage speed, is superimposed by a second buffering, which is necessary to compensate for the fluctuating web infeed speed.
  • these bufferings can possibly be out of phase with one another, that is, they can cancel one another completely or partially.
  • the drives of the second and third pile conveyor belts 6, 11 are controlled by means of the second and third drive rollers 7, 12 in such a way that the second or third pile conveyor belt 6, 11 lying at the rear in the direction of movement of the laying carriage 3 simply lies down on the laid fleece and lies down This is not moved with respect to this, while the second or third pile conveyor belt 6, 11 lying in front in the direction of movement of the laying carriage 3 moves forward at twice the speed of movement of the laying carriage 3.
  • the transporting second pile conveyor belt 11 is running is as great as the speed between the laying carriage 3 and the first pile conveyor belt 21.
  • the second pile conveyor belt 11 and the third pile conveyor belt 6 can each be driven by two drive rollers, so that they can be given a speed that is independent of the speed of movement of the laying carriage 3.
  • the second pile conveyor belt 11 and the third pile conveyor belt 6 form a laying gap at the point at which they are deflected in the laying carriage 3 by their deflection rollers 4 and 5.
  • the second pile conveyor belt 11 is driven in such a way that its upper run follows the movement of the lower run of the first pile conveyor belt 21 because both pile conveyor belts 11, 21 enclose the card web on their way between the upper carriage 18 and the laying carriage 3.
  • the third pile conveyor belt 6 is driven in such a way that the peripheral speed of the first deflection roller 4 in the laying carriage 3 is just as great how the circumferential speed of the second deflecting roller 5 is, but has opposite directions of rotation.
  • the present invention provides a fleece layer 40 in which at least one of the first, second and third drive rollers 7, 12, 25, which is partially wrapped by an air-impermeable pile conveyor belt (one of the pile conveyor belts 6, 11, 21), is advantageously modified.
  • the invention provides particular advantages with a maximum circumferential speed of at least one of the drive rollers 7, 12, 25 of at least 200 m / min, more preferably at least 300 m / min, even more preferably at least 400 m / min.
  • the invention is described below with reference to the second drive roller 12 and the second pile conveyor belt 11, which is designed to be impermeable to air. It goes without saying that this description can also apply to the first and third drive rollers 7, 25 if the first or third pile conveyor belts 6, 21 wrapping around them are designed to be air-impermeable, as well as to all other combinations of drive rollers and air-impermeable pile conveyor belts, which in alternative embodiments of fleece layers 40 may be present. It is also conceivable that several drive rollers are provided for a pile conveyor belt.
  • Fig. 2 shows an example of a second drive roller 12, which is used in a fleece layer 40 accordingly Fig. 1 is to be arranged and is partially wrapped in the installed state by a second pile conveyor belt 11. It is clear to the person skilled in the art that such second drive rollers 12 can be arranged at different positions in the fleece layer 40 and are partially wrapped by air-impermeable pile conveyor belts.
  • the second drive roller 12 is rotatably and stationarily mounted in the machine frame of the web layer 40 and can be driven by one or more drives (not shown).
  • the second drive roller 12 has a length L which usually corresponds at least to the width of the second web conveyor belt 11 guided around the second drive roller 12.
  • the second drive roller 12 is shown interrupted to to make it clear that the length L of the second drive roller 12 can be adapted to the respective prevailing conditions.
  • the second drive roller 12 has a diameter D, from which the circumference of the second drive roller 12 can be calculated in a known manner. The circumference is tangential to a lateral surface 30 and in a side view ( Fig. 2 ) perpendicular to a rotational or longitudinal axis S of the second drive roller 12 is defined.
  • the second drive roller 12 preferably has the shape of a circular cylinder.
  • the jacket surface 30 of the second drive roller 12 is rubberized.
  • the rubber layer 31 provided for this in this case forms the jacket surface 30 of the second drive roller 12.
  • the second drive roller 12 has a plurality of groove-shaped recesses 32 which are made in the jacket surface 30.
  • the groove-shaped recesses 32 can be distributed over the entire length L of the lateral surface 30 of the second drive roller 12 in the longitudinal direction thereof or can only be formed in a partial area of the lateral surface 30.
  • the groove-shaped recesses 32 are preferably provided in the longitudinal direction of the second drive roller 12 at least in the entire area which is covered by the second pile conveyor belt 11.
  • the groove-shaped recesses 32 extend essentially along the circumference of the second drive roller 12 and, when the second drive roller 12 is installed in the fleece layer 40, are covered at least in sections by the air-impermeable second pile conveyor belt 11.
  • a width B of the recesses 32 is defined in the axial direction of the second drive roller 12 and a depth T of the recesses 32 is defined in the radial direction of the second drive roller 12.
  • the width B of the recesses 32 is preferably between 1 mm and 10 mm, more preferably between 1.5 mm and 6 mm, and even more preferably between 2 mm and 4 mm.
  • the depth T of the recesses 32 is preferably between 0.5 and 6 mm, more preferably between 0.7 mm and 4 mm, and even more preferably between 1 mm and 2 mm.
  • the depth T of the recesses 32 is preferably smaller than the thickness G of the rubber layer 31, so that the recesses 32 are formed exclusively in the rubber layer 31.
  • the division A of the groove-shaped recesses 32 is in a side view of the second drive roller 12 between a the left edge of a recess 32 and the left edge of an adjacent recess 32 in the axial direction of the second drive roller 12. In other words, the division A results from the sum of the width B of a recess 32 and the width of the web between two adjacent recesses 32.
  • the division A is preferably between 2 mm and 30 mm, more preferably between 5 mm and 20 mm, and even more preferably between 11 mm and 15 mm.
  • width B, the depth T and the pitch A of the recesses 32 have proven to be advantageous in that they form a cross section and a distribution of the recesses 32 that are sufficient for a reliable discharge of the entrained air. It goes without saying, however, that the dimensions can be adapted to the given circumstances.
  • the second drive roller 12 is usually wrapped by the air-impermeable second pile conveyor belt 11 in an angular range which is preferably between 45 ° and 270 °, more preferably between 90 ° and 240 °, and even more preferably between 180 ° and 225 °.
  • the angle at which the air-impermeable second pile conveyor belt 11 wraps around the second drive roller 12 is the angle between a first point of contact of the second pile conveyor belt 11 with the second drive roller 12 and a last point of contact between the second pile conveyor belt 11 and the second drive roller 12 in the conveying direction of the second pile conveyor belt 11 is defined.
  • the recesses 32 run around the second drive roller 12 at least so far that, regardless of the angular position of the second drive roller 12, at least some of the recesses 32 extend from an area of the lateral surface 30 of the second drive roller 12 that is not covered by the second pile conveyor belt 11 of the area which is covered by the second pile transport belt 11 up to the region which is not covered by the second pile transport belt 11. In this way, drag air that gets between the second drive roller 12 and the second pile conveyor belt 11 is pressed into the recesses 32 and discharged through them from the area of the second drive roller 12 covered by the second pile conveyor belt 11. Viewed in a radial cross-sectional view of the second drive roller 12, this means that the groove-shaped recesses 32 extend in an angular range which is greater than the angular range in which the second pile conveyor belt 11 wraps around the drive roller 12.
  • the groove-shaped recesses 32 are annular and each recess 32 runs around the second drive roller 12 completely. This ensures that, regardless of the angular position of the second drive roller 12 and regardless of the angular range in which the second pile conveyor belt 11 wraps around the second drive roller 12, the removal of air through the recesses 32 is guaranteed.
  • each annular recess 32 defines a cylindrical disk which is arranged perpendicular to the longitudinal axis S of the second drive roller 12.
  • all of the recesses 32 are arranged parallel to the circumference of the circular cylindrical second drive roller 12 and the axes of rotation of the cylinder disks lie on the longitudinal axis S of the second drive roller 12.
  • each annular recess 32 defines a cylindrical disk which is arranged at an angle to the longitudinal axis S of the second drive roller 12.
  • the axes of rotation of the cylinder disks then intersect the longitudinal axis S of the second drive roller 12 at an acute angle which is between 30 ° and 89 °, more preferably between 45 ° and 89 °, and even more preferably between 80 ° and 88 °.
  • the recesses 32 as described above, run around the second drive roller 12 sufficiently, preferably completely.
  • Each of the recesses 32 can be formed independently of the adjacent recesses 32 and the second drive roller 12 can rotate in an annular manner. However, it is also possible that the recesses 32 have a certain slope and are connected to one another in such a way that they form thread-like recesses in the jacket surface 30 of the second drive roller 12.
  • recesses 32 are therefore preferably to be designed so that they are in a first area of the second drive roller 12 (for example a left area in the axial direction) are inclined in a first direction and in a second area (for example a right area in the axial direction) are inclined in a second direction opposite to the first direction .
  • the inclinations are preferably designed so that the each generated forces on the second pile conveyor belt 11 cancel each other out and the second pile conveyor belt 11 remains on the intended path of movement.
  • the recesses 32 run around the second drive roller 12 in a straight line. This means that the radially extending side surfaces of the recesses 32 are parallel to a circular disk defined by the circumference of the second drive roller 12. Such recesses 32 are particularly easy to produce.
  • the recesses 32 can run sinusoidally or zigzag-shaped along the circumference of the second drive roller 12. This means that the edges between the lateral surface 30 of the second drive roller 12 and the recesses 32 extend in a plan view of a development of the lateral surface 30 in the form of a sine curve or a zigzag along a circumferential line. The amplitude and period length of the sine curve or the shape of the zigzag shape can be adapted to the given circumstances as required.
  • Such designs of the recesses 32 offer the advantage that the contact points between the second drive roller 12 and the second pile conveyor belt 11 move in the axial direction during one revolution of the second drive roller 12. This enables a more even loading of the inside of the second pile conveyor belt 11 and thus a more even wear of the same.
  • the recesses 32 In a cross section along the longitudinal axis S of the second drive roller 12 (see the enlarged section from FIG Fig. 2 ) the recesses 32 preferably have a rectangular cross section or a U-shaped cross section. Recesses 32 with such cross-sectional shapes can be produced particularly inexpensively due to the simple geometry of the tools required. It is also conceivable in alternative embodiments to provide recesses 32 which have a V-shaped cross section. On the basis of the examples given herein, further alternatives for the design of the recesses 32 are apparent to the person skilled in the art.
  • a plurality of passive deflection rollers 4, 5, 8, 9, 13, 14, 19, 20, 24 for guiding the first, second and third pile conveyor belts 6, 11, 21 are provided in the machine frame of the web layer 40, in the upper carriage 18 and in the laying carriage 3.
  • At least one of these deflection rollers 4, 5, 8, 9, 13, 14, 19, 20, 24 can have a plurality of groove-shaped recesses, which are formed in a lateral surface of the at least one deflection roller 4, 5, 8, 9, 13, 14, 19, 20, 24 are formed and the at least one deflection roller 4, 5, 8, 9, 13, 14, 19, 20, 24 at least partially rotate.
  • the deflecting rollers 4, 5, 8, 9, 13, 14, 19, 20, 24 are usually freely rotatable.
  • the recesses are covered at least in sections by the at least one air-impermeable pile conveyor belt 6, 11, 21.
  • the recesses in at least one of the deflecting rollers 4, 5, 8, 9, 13, 14, 19, 20, 24 can be formed in accordance with the above description of the recesses 32 in the second drive roller 12, so that the at least one of the deflecting rollers 4 , 8, 9, 13, 14, 19, 20, 24 the most slip-free power transmission possible between the air-impermeable pile conveyor belt 6, 11, 21 and the at least one passive deflection roller 4, 5, 8, 9, 13, 14, 19, 20, 24 to guarantee.
  • This is particularly important when the relevant deflection roller is used, for example, as a control roller or for speed monitoring.
  • the person skilled in the art can also see further areas of application in the nonwoven layer in which such drive and deflection rollers can advantageously be used.

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  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (13)

  1. Distributeur de voile (40) de distribution d'un non-tissé composé d'une bande de voile de carde avec
    un chariot supérieur (18) pouvant effectuer des mouvements de va-et-vient, par lequel la bande de voile de carde est guidée,
    un chariot de distribution (3) pouvant effectuer des mouvements de va-et-vient dans la même direction que le chariot supérieur (18), par lequel la bande de voile de carte provenant du chariot supérieur (18) est guidée et qui sert à transférer la bande de voile de carde sur une bande transporteuse de livraison (1),
    au moins une première bande transporteuse de voile de carde (21) pour guider la bande de voile de carde vers le chariot supérieur (18) et au moins une deuxième bande transporteuse de voile de carde (11) pour continuer à guider la bande de voile de carde depuis le chariot supérieur (18) vers le chariot de distribution (3), dans lequel au moins une parmi l'au moins une première (21) et deuxième (11) bande transporteuse de voile de carde est une bande transporteuse de voile de carde non perméable à l'air,
    au moins un premier cylindre d'entraînement (25) pour entraîner l'au moins une première bande transporteuse de voile de carde (21) et au moins un deuxième cylindre d'entraînement (12) pour entraîner l'au moins une deuxième bande transporteuse de voile de carde (11),
    caractérisé en ce que
    au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement présente une multitude d'évidements (32) en forme de rainure, qui sont réalisés dans une surface extérieure (30) de l'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement et qui entourent au moins en partie au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement, et les évidements (32) sont recouverts au moins par endroits par l'au moins une bande transporteuse de voile de carde (11, 21) non perméable à l'air ; et
    une vitesse périphérique maximale de l'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement est d'au moins 200 m/min.
  2. Distributeur de voile (40) selon la revendication 1, caractérisé en ce que l'au moins une bande transporteuse de voile de carde (11, 21) non perméable à l'air s'enroule autour d'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement dans une plage angulaire, qui est comprise entre 45° et 270°, de manière davantage préférée entre 90° et 240°, et de manière encore davantage préférée entre 180° et 225°.
  3. Distributeur de voile (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que la vitesse périphérique maximale de l'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement est d'au moins 300 m/min, de manière préférée d'au moins 400 m/min.
  4. Distributeur de voile (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que les évidements (32) sont réalisés en forme d'anneau et chaque évidement de la multitude d'évidements (32) entoure en totalité l'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement.
  5. Distributeur de voile (40) selon la revendication 4, caractérisé en ce que chaque évidement (32) en forme d'anneau définit un disque cylindrique qui est disposé de manière perpendiculaire par rapport à un axe longitudinal (S) de l'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement.
  6. Distributeur de voile (40) selon la revendication 4, caractérisé en ce que chaque évidement (32) annulaire définit un disque cylindrique, qui est disposé de manière oblique par rapport à un axe longitudinal (S) de l'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement.
  7. Distributeur de voile (40) selon la revendication 4, caractérisé en ce que chaque évidement (32) annulaire s'étend de manière sinusoïdale le long de la périphérie de l'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement.
  8. Distributeur de voile (40) selon la revendication 4, caractérisé en ce que chaque évidement (32) annulaire s'étend en zigzag le long de la périphérie de l'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement.
  9. Distributeur de voile (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que les évidements (32) présentent, dans une section transversale de l'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement, le long de leur axe longitudinal (S), une section transversale rectangulaire ou en forme de U.
  10. Distributeur de voile (40) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une largeur (B) des évidements (32) est comprise entre 1 mm et 10 mm, de manière préférée entre 1,5 mm et 6 mm, de manière davantage préférée entre 2 mm et 4 mm.
  11. Distributeur de voile (40) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une profondeur (T) des évidements (32) est comprise entre 0,5 mm et 6 mm, de manière préférée entre 0,7 mm et 4 mm, et de manière davantage préférée entre 1 mm et 2 mm.
  12. Distributeur de voile (40) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une division (A) de deux évidements (32) adjacents dans le sens longitudinal (S) de l'au moins un parmi l'au moins un premier (25) et deuxième (12) cylindre d'entraînement est comprise entre 2 mm et 30 mm, de manière préférée entre 5 mm et 20 mm, et de manière davantage préférée entre 11 mm et 15 mm.
  13. Distributeur de voile (40) selon l'une quelconque des revendications précédentes, caractérisé en ce que le distributeur de voile (40) présente une multitude de cylindres de renvoi (4, 5, 8, 9, 13, 14, 19, 20, 22, 24) passifs pour guider l'au moins une première bande transporteuse de voile de carde (21) et l'au moins une deuxième brande transporteuse de voile de carde (11) dans le bâti de machine du distributeur de voile (40), dans le chariot supérieur (18) et dans le chariot de distribution (3) et au moins un desdits cylindres de renvoi (4, 5, 8, 9, 13, 14, 19, 20, 22, 24) présente une multitude d'évidements en forme de rainure qui sont réalisés dans une surface extérieure de l'au moins un cylindre de renvoi (4, 5, 8, 9, 13, 14, 19, 20, 22, 24) et qui entourent au moins en partie l'au moins un cylindre de renvoi (4, 5, 8, 9, 13, 14, 19, 20, 22, 24), dans lequel les évidements sont recouverts au moins par endroits par l'au moins une bande transporteuse de voile de carde (11, 21) non perméable à l'air.
EP16000972.6A 2016-04-29 2016-04-29 Étaleur-nappeur Active EP3239371B1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2024083518A1 (fr) * 2022-10-19 2024-04-25 Marco Battistella Nappeuse transversale pour bandes de carde

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2365113A1 (fr) * 2010-03-08 2011-09-14 Asselin-Thibeau Chariot mobile d'entrée d'étaleur-nappeur comportant un rouleau de détour avec cannelures ou annelures

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4592463A (en) * 1984-07-05 1986-06-03 Halil Puskar Roller with double left and double right helix pattern track
EP0338112B2 (fr) * 1988-04-22 1993-10-06 Carl Schenck Ag Procédé et dispositif pour le guidage et l'entraînement d'un entraînement de bande chargé par des forces
DE29518587U1 (de) 1995-11-23 1997-04-10 Autefa Maschinenfab Vliesleger
TW509734B (en) * 2001-05-18 2002-11-11 Hon Yen Ind Co Ltd Disk roller of cross lapper
FR2840326B1 (fr) * 2002-05-28 2004-07-30 Asselin Chariot mobile d'entree d'etaleur-nappeur et etaleur-nappeur equipe dudit chariot
DE502006000950D1 (de) 2006-02-01 2008-07-31 Dilo Kg Maschf Oskar Vorrichtung zum Legen eines Vlieses

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2365113A1 (fr) * 2010-03-08 2011-09-14 Asselin-Thibeau Chariot mobile d'entrée d'étaleur-nappeur comportant un rouleau de détour avec cannelures ou annelures

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