EP3739089B1 - Dispositif d'alimentation d'une installation de formation du non-tissé - Google Patents

Dispositif d'alimentation d'une installation de formation du non-tissé Download PDF

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Publication number
EP3739089B1
EP3739089B1 EP19174837.5A EP19174837A EP3739089B1 EP 3739089 B1 EP3739089 B1 EP 3739089B1 EP 19174837 A EP19174837 A EP 19174837A EP 3739089 B1 EP3739089 B1 EP 3739089B1
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EP
European Patent Office
Prior art keywords
strand
roller
infeed
intake roller
basic material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19174837.5A
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German (de)
English (en)
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EP3739089A1 (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
Original Assignee
Oskar Dilo Maschinenfabrik KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oskar Dilo Maschinenfabrik KG filed Critical Oskar Dilo Maschinenfabrik KG
Priority to EP19174837.5A priority Critical patent/EP3739089B1/fr
Priority to US16/863,704 priority patent/US11732386B2/en
Priority to CN202010407981.7A priority patent/CN111945256B/zh
Publication of EP3739089A1 publication Critical patent/EP3739089A1/fr
Application granted granted Critical
Publication of EP3739089B1 publication Critical patent/EP3739089B1/fr
Active legal-status Critical Current
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots
    • D01G23/04—Hoppers; Delivery shoots with means for controlling the feed
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/736—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged characterised by the apparatus for arranging fibres

Definitions

  • the present invention relates to a feed device for feeding loosened fibers to a transport device, a web forming system comprising such a feed device, and a method for forming or profiling a material web.
  • fiber tufts are usually delivered from a fiber tuft feeder to a transport device, which transports them further in the form of a fiber tuft mat to a pile producer, such as a carding machine, a fleece former or a bonding machine, such as a needling machine.
  • a pile producer such as a carding machine, a fleece former or a bonding machine, such as a needling machine.
  • the weight of the fiber flock mat can be measured using a belt weigher and the feed speed of the pile generator can be adjusted on this basis.
  • a feed device for feeding dissolved fibers or fiber tufts onto a transport device, which comprises a plurality of feed segments arranged horizontally next to one another and transversely to the transport direction.
  • Each of these feed segments has its own draw-in roller, which interacts with an opening roller of the feed device to open a strand of a starting material, for example a fiber roving or a fiber fleece strip. It is thereby possible to adjust and vary the quantity of fibers or fiber tufts delivered by each feed segment of the feed device.
  • Fibers can thus be released onto the transport device in a targeted manner across the width of the transport device transversely to its transport direction in order to compensate for defects or irregularities in a material web, such as a fiber flock mat or fleece web, or to produce a predetermined transverse profile.
  • a material web such as a fiber flock mat or fleece web
  • Each feed segment is fed with its own strand of starting material, which is fed to the feed segment in the middle with respect to the width of its feed roller.
  • the result of this is that the loosened fibers or fiber tufts are sometimes not completely evenly distributed over the width of the respective feed segment on the transport device be delivered, with more fibers or fiber tufts being delivered centrally than toward the edges of each feed segment.
  • each feed segment has its own feed roller, which is rotatably mounted and individually driven, appropriate installation space must be provided between the feed rollers of feed segments arranged next to one another, so that the feed rollers cannot usually connect directly to one another in the axial direction. There can therefore be places transverse to the transport direction of the transport device and thus of the material web to be formed, at which no fibers or fiber tufts are released by the feed device. This leads to reduced strength of the material web in the transverse direction and not all imperfections or irregularities can be reliably compensated for.
  • a feed device for feeding opened fibers to a transport device comprises a feed roller, which is set up to feed a plurality of strands of a starting material made of fibers, arranged next to one another in an axial direction of the feed roller, into the feed device, and an opening roller, which is connected to the feed roller for Dissolving the strands of the starting material interacts.
  • the feed device also comprises a plurality of dosing devices assigned to the feed roller, each dosing device of the plurality of dosing devices being set up to regulate the supply of at least one strand of the starting material to the feed roller.
  • the supply of a strand of the starting material and thus the quantity of fibers produced from it and delivered to the transport device can be regulated without it being necessary to provide feed rollers that have to be stored and controlled individually for this purpose. Rather, a plurality of strands can be pulled in by means of the same draw-in roller, with the possibility of delivering different amounts of fibers transverse to the transport direction of the transport device (hereinafter also referred to as “transverse direction”) remaining.
  • transverse direction the transport direction of the transport device
  • the draw-in roller draws in at least two, preferably at least three, at least five, at least ten, or at least twenty strands of the fiber starting material arranged next to one another into the feed device.
  • the feed device comprises at least two, preferably at least three, at least five, at least ten, or at least twenty metering devices arranged next to one another, which are distributed over the working width of the feed device.
  • the working width of the feed device corresponds to the maximum width of the material web to be formed or profiled and is usually between 0.5 m and 6 m.
  • Each strand of the starting material can be formed, for example, by a roving, a yarn or a strip of non-woven fabric.
  • the strand can be partially or completely opened by the interaction of the feed roller and the opening roller, so that either fiber flocks or individual fibers are formed, which are also referred to herein as "opened fibers".
  • the draw-in roller and the opening roller work together in a mutually facing area to open the starting material.
  • the starting material is drawn in between the respective feed roller and the opening roller and separated into individual components, such as individual fibers or fiber flocks.
  • the feed roller and the opening roller usually have sets of teeth which engage in the starting material and pull it apart in order to loosen fibers or fiber flocks from the starting material.
  • the feed and/or opening roller can also be rubberized and grasp the starting material by means of frictional engagement.
  • An axial direction of the draw-in roller preferably extends parallel to an axial direction of the opening roller and transversely to the transport direction.
  • the feed device can form a new material web on the transport device by feeding the loosened fibers onto the transport device, or feed loosened fibers to an existing material web that is conveyed along under the feed device on the transport device.
  • a web of material which can be, for example, a fibrous mat, a fibrous web or a fleece web.
  • the material web is arranged on a substantially flat surface of the transport device. The axial direction of the draw-in roller and the opening roller preferably extends parallel to this flat surface and thus to the material web.
  • each of the plurality of dosing devices is set up to regulate the supply of at least one strand of the starting material to the feed roller.
  • the dosing device can change the supplied mass of the starting material in relation to the time or to one revolution of the feed roller, for example by inhibiting the supply, ie slowing it down or completely excluding it.
  • Each metering device can also regulate the mass of feedstock supplied in relation to its length, for example by stretching the respective strand of feedstock.
  • each dosing device can be arranged relative to the strand in such a way that it can influence, in particular inhibit or exclude, its infeed by the infeed roller.
  • At least one first metering device of the plurality of metering devices can be actuated independently of at least one second metering device of the plurality of metering devices. Even more preferably, each dosing device of the plurality of dosing devices can be actuated independently of all other dosing devices.
  • the dosing devices are arranged next to one another in an axial direction of the draw-in roller and are each set up to regulate the supply of at least one strand of the starting material to the draw-in roller independently of the other strands of the starting material, the supply of fibers to the transport device can be particularly precise in the transverse direction and adjusted with great flexibility.
  • the opening roller is driven, for example by a servo motor.
  • the opening roller is preferably formed continuously transversely to the transport direction, but can also be formed by several opening roller sections aligned axially with respect to one another.
  • the provision of an opening roller that is continuous transversely to the direction of transport leads to a particularly simple and cost-effective design.
  • the draw-in roller is designed to be continuous over the entire working width of the feed device. This means that the feed device comprises only a single draw-in roller, which minimizes the number of bearing points and drives. In this respect, the feeding device is then designed to be as simple and inexpensive as possible.
  • a plurality of feed rollers or feed roller segments can be provided transversely to the transport direction, with each feed roller Plurality of feed rollers or feed roller segments is nevertheless assigned a plurality of dosing devices.
  • the number of bearing points and drives can be reduced compared to embodiments with an individual feed roller for each strand of the starting material.
  • the plurality of strands is fed to the draw-in roller in a feed direction, preferably by means of the dosing device.
  • the feed direction can extend radially or tangentially with respect to the draw-in roller or at any desired angle to the surface of the draw-in roller.
  • a certain holding effect on the strand can be brought about if the feed direction is aligned radially with respect to the draw-in roller and the strand is deflected by approximately 90° when it hits the draw-in roller.
  • Each dosing device of the plurality of dosing devices particularly preferably comprises a dosing element which can be moved between a first position and a second position.
  • the dosing element In the first position, the dosing element is set up to allow the at least one strand of the starting material to be fed to the feed roller.
  • the strand of starting material In the first position, the strand of starting material is guided along a feed path through the dosing device.
  • the dosing element is set up to inhibit or exclude the supply of the at least one strand of the starting material to the feed roller.
  • the dosing device is of particularly simple design and can be easily integrated into the feeding device.
  • the dosing element is preferably arranged in a stationary and fixed manner both in the first and in the second position, ie it does not move.
  • the dosing element is preferably arranged in such a way that it essentially does not impede the infeed of the at least one strand of the starting material to the infeed roller by the infeed roller.
  • the dosing element is designed such that it guides the at least one strand of the starting material in the first position in a feed direction. In this case, the dosing element opposes the respective strand of the starting material with as little resistance as possible, preferably no resistance at all.
  • the dosing element is arranged in such a way that it inhibits the infeed of the at least one strand of the starting material to the infeed roller by the infeed roller, ie possibly slows it down to a standstill, or the strand from home out does not lead into the engagement area of the feed roller. If the feed of the strand is blocked until it comes to a standstill or if the strand is not fed into the engagement area of the feed roller, the feed of further starting material to the feed roller is prevented.
  • the dosing element can be pivotable between the first and the second position, ie it can be moved in a rotary manner, or it can be displaceable, ie it can be moved linearly.
  • the dosing element can also perform a combined rotary and linear movement by means of a suitable mechanism.
  • the infeed of the at least one strand of the starting material is inhibited or excluded by the dosing element essentially without changing the rotational speed of the draw-in roller, so that the other strands of the plurality of strands arranged next to one another in the axial direction of the draw-in roller continue to be fed to the draw-in roller and drawn in.
  • the dosing element can be moved into any desired intermediate position between the first and the second position.
  • the dosing element can be adjusted steplessly between the first and the second position.
  • the mass of the starting material supplied in relation to the time or to one revolution of the feed roller can be changed in this way.
  • the dosing element is designed as a clamping element which is set up to engage in the second position with the at least one strand of the starting material in a position which is arranged in front of the feed roller in the feed direction in order to facilitate the feeding of the at least one strand of the starting material Starting material to inhibit or exclude the feed roller.
  • the strand of starting material is moved along a feed path through the metering device when the dosing element is in the first position. In the second position, the dosing element is then at least partially arranged in the feed path of the strand.
  • the dosing device comprises a corresponding counterpart, which is opposite the clamping element with respect to the feed path of the strand of starting material.
  • the dosing element In the second position, the dosing element cooperates with the counterpart to at least partially clamp and thereby slow down or clamp the strand of starting material between the clamping element and the counterpart.
  • the counterpart is preferably designed in such a way that it opposes as little resistance as possible, preferably no resistance, to the strand of starting material in the first position of the dosing element.
  • the counterpart can be designed as part of the dosing element, the dosing device or the feed device.
  • the counterpart is either arranged in a stationary manner or, analogous to the dosing element, can also be moved between a first and a second position.
  • the distance between the dosing element and the counterpart is increasingly reduced, as a result of which the respective strand of the starting material can be braked as desired.
  • the strand of starting material can also be completely clamped between the clamping element and the counterpart, so that further feeding of the strand of starting material is ruled out.
  • the dosing element is designed as a trough which is set up to guide the at least one strand of the starting material into an engagement area of the feed roller in the first position and not to guide the at least one strand of the starting material into the engagement area of the feed roller in the second position lead to inhibit or exclude the supply of the starting material.
  • the trough can be designed as a pedal trough, for example.
  • the engagement area of the feed roller is defined as the area in which the feed roller can grasp the fed strand of starting material. This is essentially the area that is accessible through the set of teeth on the feed roller. If the draw-in roller has no teeth, but instead is rubberized, for example, the engagement area in the radial direction of the draw-in roller is correspondingly smaller. Due to the draft inside the feeder due to the high speeds of rotation of the rollers, as well as due to possible vibrations of the strand of starting material, the engagement area can also be somewhat larger.
  • a guide surface of the trough facing the feed roller is adapted to the peripheral surface or the radius of the feed roller and is preferably designed to complement it.
  • the trough In the first position, the trough is arranged at a first distance from the feed roller and feeds the at least one strand of the starting material to the engagement area of the feed roller and along part of the circumference of the feed roller. In the second position, the trough is arranged at a second distance from the feed roller in such a way that it does not guide the at least one strand of the starting material into the engagement area of the feed roller. The second distance is greater than the first distance. In particular, the distance between the guide surface of the trough and the peripheral surface of the feed roller is decisive.
  • the dosing element can particularly preferably also be designed as a combination of a clamping element and a trough as described above.
  • the dosing element therefore comprises a first and a second section.
  • the first section is then designed as a clamping element which is set up to engage in the second position with the at least one strand of the starting material at a position which is arranged in front of the feed roller in the feed direction in order to stop the feeding of the at least one strand of the starting material inhibit or exclude.
  • the second section is designed as a trough which is designed to guide the at least one strand of the starting material into an engagement area of the feed roller in the first position and the at least not feeding a strand of stock material into the engagement area of the feed roller to inhibit or preclude feed of stock material.
  • the first and second portions of the metering element may be integrally formed to form a single metering element.
  • the metering element can be pivoted in the feed device, with a first section of the metering element facing away from the feed roller being designed as a clamping element, while a second section of the metering element facing the feed roller is designed as a trough.
  • the dosing element is to be designed such that pivoting it about the pivot axis into the second position causes the first section to move into the movement path of the strand of starting material and the second section to move at least in sections away from the feed roller.
  • first and the second section of the dosing element can also be formed, for example, by two separate components which are preferably connected to one another in an articulated manner.
  • the dosing element can be easily adapted to the conditions in the feeding device and the movements or effects of the first and second sections can be designed individually.
  • each dosing device of the plurality of dosing devices comprises an actuating device for moving the respective dosing element between the first and the second position.
  • Each actuating device preferably comprises a drive means, preferably a hydraulic or pneumatic cylinder or a spindle drive. This means that easily available, inexpensive components can also be used.
  • a fleece formation system for forming or profiling a web of material comprises a transport device for conveying the web of material in a transport direction and at least one feed device according to the above statements for feeding opened fibers onto the transport device.
  • the web formation system can be used to form a new material web, to provide an existing material web with a surface profile in the transverse direction and/or in the longitudinal direction, or to compensate for any defects in an existing material web in order to form a material web that is as uniform as possible .
  • the fleece formation system can comprise two or more feed devices, which are arranged one behind the other in the transport direction of the transport device.
  • the fibers supplied by a feed device can differ from the fibers supplied by at least one further feed device in at least one property of the fibers.
  • the at least one property of the fibers in which the fibers differ is preferably selected from: the color of the fibers, the type of fiber, the fiber material, the fiber diameter, the fiber length, the fiber treatment, the cross-sectional shape of the fibers, the roughness of the fibers or of fiber curl.
  • natural or synthetic fibers form different types of fibers. Different fiber materials can, for example, comprise different natural fibers or different synthetic fibers.
  • chemical treatments of the fibers can be provided, for example.
  • each feeding device can also feed fibers of the same starting material.
  • the supply of a strand of the starting material and thus the quantity of fibers produced from it and delivered to the transport device can be regulated without it being necessary to provide feed rollers that have to be stored and controlled individually for this purpose.
  • a plurality of strands can be drawn in by means of the same draw-in roller, with the possibility of delivering different fiber quantities transversely to the transport direction and/or in the transport device, ie in the longitudinal direction and/or in the transverse direction, remaining.
  • bearing points for draw-in rollers between the strands of starting material arranged next to one another can be dispensed with, so that fibers are discharged more evenly onto the transport device or a higher resolution of the fiber discharge onto the transport device is achieved.
  • the quantity of fibers produced from these strands and scattered onto the transport device can be varied as desired.
  • a profile of scattered fibers can be generated across the width of the transport device in the transverse direction and/or in the longitudinal direction, or alternatively a material web that is as uniform as possible can be formed by compensating for defects or material fluctuations.
  • the method is preferably carried out by means of a feed device as described above. All of the features and advantages described with regard to the feeding device according to the invention and the method steps carried out by it can thus be transferred analogously to the method according to the invention.
  • Regulating the supply particularly preferably includes changing a ratio of the supplied mass of the starting material to the time, to one revolution of the feed roller or to the length of the starting material of at least one of the first and second strands.
  • regulating the feed includes allowing at least one of the first and second strands to be fed substantially unimpeded to the feed roller, or engaging at least one of the first and second strands at a position that is in a direction of feed ahead of the Feed roller is arranged to inhibit or exclude further feeding.
  • the intervention in at least one of the first and second strands can include braking the respective strand to a complete standstill.
  • the respective strand can be clamped to a greater or lesser extent in front of the feed roller in the feed direction.
  • the respective strand is particularly preferably reliably clamped between two components if further drawing-in can be ruled out. At the same time, this ensures that the strand is held in the feed device, even if it is not drawn in any further, and the strand is prevented from being pulled out of the feed device.
  • At least one of the first and second strands is engaged, for example, by a dosing device of the feeding device.
  • regulating the supply can also include guiding at least one of the first and second strands into an engagement area of the feed roller in order to allow further drawing-in, or guiding at least one of the first and second strands out of the engagement area of the feed roller. to inhibit or prevent further retraction.
  • the feed roller rotates at a constant speed during regulation. This makes it possible for only the supplied quantity of the respectively regulated strand of starting material to change, while the other strands fed to the same draw-in roller continue to be drawn in unchanged.
  • the quantity of fibers delivered to the transport device can thereby be varied locally in the transverse direction and thus over the width of the material web, without changing the rotational speed of the draw-in roller.
  • the nonwoven forming plant 2 is set up to form a material web 4, in particular a fibrous web or nonwoven web.
  • the web formation system 2 comprises a transport device 6 for conveying the material web 4 in a transport direction T, and at least one feed device 8 for feeding dissolved fibers or fiber tufts onto the transport device 6.
  • the feed device 8 forms a new material web 4.
  • a material web 4 e.g. any nonwoven intermediate product, can already be arranged on the transport device 6 upstream of the feed device 8 with respect to the transport direction T, and the nonwoven forming system 2 scatters additional fibers or Fiber flocks on this material web.
  • the transport device 6 is preferably moved continuously in the transport direction T.
  • the transport device 6 can be designed as an endlessly circulating transport belt, preferably as a sieve belt with suction underneath.
  • the speed of the transport device 6 is preferably in the range of 0.2 to 20 m/min, more preferably in the range of 0.5 to 10 m/min.
  • One or more measuring devices measuring the basis weight of the material web 4 across its width in the transverse direction Q can be provided upstream and/or downstream of the feeding device 8 in a manner known to those skilled in the art.
  • the transverse direction Q extends transversely to the transport direction T, in 1 perpendicular to the drawing plane. Based on the information from these measuring devices, the transverse profile and, based on the movement of the transport device 6 in the transport direction T, also the longitudinal profile of the material web 4 can be determined.
  • the material web 4 formed can alternatively be supplied to various processing steps by means of the transport device 6 .
  • the material web 4 is fed to a pile producer, preferably a carding machine, and made uniform there.
  • the material web is directly a fleece former, such as a fed to aerodynamic web formers.
  • the web of material is broken up again before further processing.
  • the web of material is fed directly to a bonding machine, eg a needling machine.
  • the web formation system 2 also includes a plurality of dispensing devices 12 for storing and dispensing a strand 10 of a starting material 14 made of fibers, for example a fiber roving or a fiber fleece strip.
  • the dispensing devices 12 are in the transverse direction Q, i.e. transverse to the transport direction T and parallel to a support plane of the transport device 6 and thus in 1 arranged next to each other perpendicular to the plane of the drawing, which is why in 1 only one dispensing device 12 can be seen.
  • the dispensing device 12 is designed as a coil, but it can also be designed as a sliver can or the like.
  • the starting material 14 runs from the dispensing device 12 to a preferably rubberized storage roller 16, which preferably extends across the entire width of the feed device 8 in the transverse direction Q and horizontally.
  • a winding of a strand 10 of the starting material 14 provided by the dispensing device 12 is wound around the storage roller 16 .
  • the storage roller 16 is driven, preferably by means of a servo motor 18 and also preferably continuously at a relatively slow speed. In certain embodiments, the storage roller 16 can also be omitted.
  • the storage roller 16 can be designed in one piece.
  • the storage roller 16 can also accommodate several strands 10 of the starting material 14 next to one another at the same time.
  • the web formation system 2 also includes a rotating, preferably trimmed, draw-in roller 20 to which the strands 10 of the starting material 14 are fed.
  • the feed roller 20 draws a plurality of strands 10 of the starting material 14 arranged next to one another in an axial direction of the feed roller 20 into the feed device 8 .
  • the draw-in roller 20 pulls off the starting material 14 provided by the associated dispensing devices 12, either with the interposition of the storage roller 16 or directly.
  • the feed roller 20 is preferably driven by a servo motor 22 .
  • the draw-in roller 20 is preferably designed in one piece and extends in the transverse direction Q over the entire width of the feed device 8, preferably at least over the entire width of the material web 4 to be formed.
  • the draw-in roller 20 can also comprise individual segments which are preferably aligned axially with one another in the transverse direction Q.
  • the starting material 14 moved along by the feed roller 20 is preferably guided to a garnished opening roller 26 by means of a trough 24 .
  • the opening roller 26 can also be designed in one piece and can extend in the transverse direction Q over the entire width of the feed device 8, preferably over the entire width of the material web 4 to be formed.
  • the opening roller 26 can also comprise individual segments which are aligned axially with one another in the transverse direction Q.
  • the opening roller 26 can be driven in the same direction of rotation as the feed roller 20.
  • the opening roller 26 also has a set of protruding teeth.
  • the feed roller 20 includes a set of teeth projecting backwards with respect to the direction of rotation of the feed roller 20 and the opening roller 26 includes a set of teeth projecting forwards with respect to the direction of rotation of the opening roller 26 .
  • the sets of teeth of the draw-in roller 20 and the opening roller 26 can also be designed in other conventional ways.
  • the opening roller 26 interacts with the feed roller 20 to open the starting material 14 .
  • the opening roller 26 and the feed roller 20 dissolve the twisted or compacted starting material 14 of the strand 10, e.g. These fall into a corresponding discharge chute 28 and from there onto the transport device 6.
  • a cleaning roller 30 can optionally be provided, which strips fibers or fiber tufts that have gotten caught on the teeth of the opening roller 26, so that these are also discharged into the discharge chute 28 .
  • a feed device 8 according to the invention with a plurality of dosing devices 32 assigned to a respective feed roller 20 is shown in each case.
  • the feeding devices 8 shown can each be part of a nonwoven forming system 2, as described with reference to FIG 1 is described.
  • all features of the nonwoven forming system 2 are as follows 1 to the embodiments Figures 2 to 7 transferable, which differ essentially only in the embodiment of the respective dosing device 32 and their arrangement with respect to the opening roller 26.
  • the majority of the dosing devices 32 are shown in the side views according to FIG Figures 2 to 7 only one dosing device 32 can be seen in each case.
  • the further dosing devices 32 of the plurality of dosing devices 32 are arranged in the axial direction of the respective draw-in roller 20 next to the dosing device 32 shown in each case.
  • each dosing device 32 of the plurality of dosing devices 32 is set up to regulate the supply of at least one strand 10 of the starting material 14 to the feed roller 20 .
  • each dosing device 32 is set up to change the quantity of starting material 14 fed in and opened up by the interaction of the feed roller 20 and the opening roller 26 without changing the rotational speed of the feed roller 20 for this purpose.
  • Each dosing device 32 can also regulate the supply of a plurality of strands 10 arranged next to one another in the axial direction of the draw-in roller 20 to the draw-in roller 20, with the supply of this plurality of strands 10 then only being able to be regulated together.
  • each metering device 32 of the plurality of metering devices 32 includes a metering member 34 movable between a first position and a second position.
  • the dosing element 34 In the first position, the dosing element 34 is set up to allow the at least one strand 10 of the starting material 14 to be fed to the feed roller 20 .
  • the dosing element 34 In the second position, the dosing element 34 is set up to inhibit or exclude the supply of the at least one strand 10 of the starting material 14 to the feed roller 20 .
  • the dosing element 34 can also be moved into any intermediate positions between the first and the second position.
  • Each dosing device 32 can optionally also include a second dosing element 36 (see Fig. Figures 2, 3 ), which is movable between a first position and a second position corresponding to the first dosing element 34 .
  • the advantage of providing a second metering element 36 within a metering device 32 is that the starting material 14 fed to the first metering element 32 can differ from the starting material 14 fed to the second metering element 36 in at least one property of the fibers.
  • the at least one property of the fibers of the two starting materials in which the fibers differ is preferably selected from: the color of the fibers, the type of fiber, the fiber material, the fiber diameter, the fiber length, the fiber treatment, the cross-sectional shape of the fibers, the roughness of the fibers or the fiber crimp.
  • natural or synthetic fibers form different types of fibers.
  • Different fiber materials can e.g. B. include different natural fibers or different synthetic fibers.
  • chemical treatments of the fibers can be provided, for example.
  • the properties of the fibers have a corresponding effect on the properties of the material web 4 formed by them.
  • the embodiments according to Figures 4 to 7 correspondingly include a second dosing element.
  • the dosing element 34 is designed as a trough.
  • the dosing device 32 optionally includes the second dosing element 36, which is designed like the first dosing element 34 and is only offset in terms of its arrangement relative to the draw-in roller 20.
  • the first dosing element 34 is shown in the first position, in which it allows the strand 10 of the starting material 14 to be fed to the feed roller 20 .
  • the dosing device 32 feeds the strand 10 of the starting material 14 in a feed direction Z to the feed roller 20 and along the feed roller 20 to the opening roller 26.
  • the dosing element 34 is like that with reference to FIG 1 described trough 24 formed and formed at least partially complementary to the peripheral surface of the feed roller 20.
  • the dosing element 34 guides the strand 10 of the starting material 14 into an engagement area of the feed roller 20 in which the feed roller 20 or its teeth or rubberized surface can grasp the strand 10 of the feed material 14 .
  • the strand 10 of the starting material 14 fed to the first dosing element 34 is opened up in an area between the draw-in roller 20 and the opening roller 26 through the interaction of these and the opened fibers are scattered through the delivery chute 28 onto the transport device 6, where they feed the material web 4 form.
  • the optional second dosing element 36 is in 2 arranged in the second position in which it does not lead the strand 10 of the starting material 14 fed to it into the engagement area of the draw-in roller 20 . Rather, it keeps the strand 10 at a distance from the draw-in roller.
  • the first dosing element 34 is in the second position in which it does not guide the strand 10 of the starting material 14 fed to it into the engagement area of the feed roller 20 and thereby inhibits or excludes the feed of the starting material 14 to the feed roller 20.
  • the metering element 34 is arranged in the first position at a first distance from the feed roller 20, which is smaller than a second distance from the feed roller 20, in which the metering element 34 is arranged in the second position.
  • the first distance is so small that the set of teeth or the rubberized lateral surface of the draw-in roller 20 grips the strand 10 of the starting material 14 .
  • the second distance is so large that the set of teeth or the rubberized outer surface of the feed roller 20 can essentially no longer engage in the strand 10 of the starting material 14 .
  • the dosing element 34 thus no longer guides the strand 10 of the starting material 14 into the engagement area of the feed roller 20. Although the feed roller 20 continues to rotate, the strand 10 of the starting material 14 cannot be further conveyed by it.
  • the metering element 34 can be displaced substantially linearly between the first and second positions or can be pivoted between the first and second positions.
  • the strand 10 can also be clamped at a point in the feed direction Z in front of the draw-in roller 20.
  • the dosing element 34 can for this purpose comprise a first section 34a and a second section 34b which can be moved relative to one another in order to clamp the strand 10 between them.
  • one of the first and second sections, in particular a stationarily arranged section of these, can also be formed by the feed device 8 or the dosing device 32 .
  • a second embodiment of a dosing device 32 is shown.
  • the dosing element 34 of the dosing device 32 is designed as a clamping element.
  • This dosing element 34 is set up to, in the second position ( figure 5 ) engage the at least one strand 10 of the starting material 14 at a position which is arranged in front of the feed roller 20 in the feed direction Z in order to inhibit or exclude the feeding of the at least one strand 10 of the starting material 14 to the feed roller 20.
  • the dosing element 34 designed as a clamping element in the first position allows the supply of the starting material 14 to the feed roller 20 essentially unhindered.
  • the fibers of the starting material 14 are released from the strand 10, along the Circumferentially the opening roller 26 is conveyed into the discharge chute 28 and is scattered there onto the transport device 6 in order to form or profile the material web 4 .
  • the dosing element 34 is arranged in the second position in which it inhibits or excludes the feed of the strand 10 of the starting material 14 to the feed roller 20 .
  • the dosing element 34 engages in the strand 10 of the starting material 14 .
  • the dosing element 34 can be moved into the feed path of the starting material 14, along which the strand 10 is guided in the first position of the dosing element 34, and press the strand 10 against a corresponding counterpart.
  • the counterpart can be part of the feed device 8 or the dosing device 32 .
  • the dosing element 34 can also comprise a first section 34a and a second section 34b, which can be moved relative to one another, so that one of these sections 34a, 34b forms the corresponding counterpart.
  • the dosing element 34 is only partially moved into the feed path of the strand 10 , the feed of the strand 10 of the starting material 14 is slowed down, so that less starting material 14 reaches the feed roller 20 .
  • the strand 10 of the starting material 14 can also be clamped completely by the dosing element 34 or between the dosing element 34 and the corresponding counterpart, so that a further supply of the starting material 14 to the feed roller 20 is ruled out. Fibers of the starting material, which are arranged after the clamping point in the feed direction Z at the time of clamping, are combed out and drawn in by the draw-in roller 20 .
  • Fibers that are pinched by the dosing element 34 at this point in time remain in the engagement area of the draw-in roller 20, but cannot be drawn in any further. If the dosing element 34 is opened again and thereby releases the starting material 14, these fibers can be caught by the draw-in roller 20, as a result of which the strand 10 of the starting material 14 is drawn in again.
  • the metering element 34 designed as a clamping element can also optionally have a second distance from the feed roller 20 in the second position, which is greater than a first distance of the metering element 34 from the feed roller 20 in the first position. If the dosing element 34 is again arranged closer to the feed roller 20 in the first position, the renewed feed of the strand 10 of the starting material 14 is also ensured if this has fibers of a very short length.
  • the dosing element 34 in turn comprises a first section 34a and a second section 34b.
  • the first section 34a is designed as a trough which, in the first position 6 feeding the strand 10 of stock material 14 to the feed roller 20, feeding the stock material 14 into the engagement area of the feed roller 20 and along a portion of the circumference of the feed roller 20.
  • the strand 10 of the starting material 14 is opened and the opened fibers are conveyed along the circumference of the opening roller 26 into the delivery chute 28 and scattered onto the transport device 6 by this.
  • the second section 34b of the dosing element 34 is arranged in the first position of the dosing element 34 in such a way that it allows the feed of the strand 10 of the starting material 14 to the feed roller 10 essentially unhindered.
  • the first and the second section 34a, 34b of the dosing element 34 clamp the strand 10 of the starting material 14 by engaging in the strand 10 in a position which is arranged in front of the draw-in roller 20 in the feed direction Z.
  • the first and second sections 34a, 34b are hingedly connected together and rotated relative to each other to the second position such that the strand 10 is clamped therebetween.
  • the first section 34a of the dosing element 34 can also be designed in such a way that in the second position it clamps the strand 10 of the starting material 14 with a corresponding counterpart of the feed device 8 or the dosing device 32, so that the second section 34b does not necessarily have to be present.
  • the first section 34a is preferably articulated in the feed device 8 or the dosing device 32 with the end facing away from the second section 34b in such a way that the movement of the first section 34a relative to the second section 34b into the second position also causes at least part of the first section 34a, away from the draw-in roller 20 and at a second, greater distance from the draw-in roller 20.
  • an actuating device 38 for moving the metering element 34 between the first and the second position is also shown, as can also be used for the first and second embodiment.
  • the actuating device 38 comprises a drive, such as a hydraulic or pneumatic cylinder, a spindle drive, etc.
  • the actuating device 38 can be connected directly to the dosing element 34 and move it linearly or rotationally between the first and second positions.
  • the actuating device 38 can also be connected to the dosing element 34 via a mechanism, which makes it possible to combine different forms of movement or to realize a movement of several components.
  • the actuating device 38 is connected to the second section 34b of the dosing element 34 .
  • the second section 34b is in turn connected in an articulated manner to the first section 34a of the dosing element 34 .
  • the first and the second section 34a, 34b are pivoted relative to one another in order to engage in the strand 10 of the starting material 14.
  • the first section 34a is pivoted relative to the draw-in roller 20 in order to no longer guide the starting material 14 into the engagement area of the draw-in roller 20 .
  • This reliably prevents further starting material 14 from being fed to the draw-in roller 20 .
  • it is ensured that the strand 10 of the starting material 14 is not pulled out of the feed device 8 since its end is clamped by the dosing element 34 .
  • the invention has so far been described with a continuous draw-in roller 20.
  • draw-in rollers next to one another each of which draws in a plurality of strands of the starting material arranged next to one another in an axial direction of the draw-in roller.
  • feed rollers each of which draws in a plurality of strands of the starting material arranged next to one another in an axial direction of the feed roller, are arranged offset in the circumferential direction along the circumference of the opening roller.
  • the draw-in rollers can be formed continuously across the width of the opening roller, or formed in an axial line along the circumference of the opening roller, or arranged offset in the axial direction of the opening roller.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (15)

  1. Dispositif d'amenée (8) pour amener des fibres désagrégées sur un dispositif de transport (6), le dispositif d'amenée (8) comprenant :
    un rouleau d'insertion (20), qui est adapté pour insérer une pluralité de brins (10) d'un matériau de départ (14) de fibres agencés côte à côte dans une direction axiale du rouleau d'insertion (20) dans le dispositif d'amenée (8) ; et
    un rouleau ouvreur (26), qui coopère avec le rouleau d'insertion (20) pour désagréger les brins (10) du matériau de départ (14) ;
    caractérisé en ce que
    le dispositif d'amenée (8) comprend une pluralité d'appareils de dosage (32) associés au rouleau d'insertion (20), chaque appareil de dosage (32) de la pluralité d'appareils de dosage (32) étant adapté pour réguler l'amenée d'au moins un brin (10) du matériau de départ (14) vers le rouleau d'insertion (20).
  2. Dispositif d'amenée (8) selon la revendication 1, caractérisé en ce qu'au moins un premier appareil de dosage (32) de la pluralité d'appareils de dosage (32) peut être actionné indépendamment d'au moins un deuxième appareil de dosage (32) de la pluralité d'appareils de dosage (32).
  3. Dispositif d'amenée (8) selon la revendication 1 ou 2, caractérisé en ce que le rouleau d'insertion (20) est réalisé sous forme continue sur toute la largeur de travail du dispositif d'amenée (8).
  4. Dispositif d'amenée (8) selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque appareil de dosage (32) de la pluralité d'appareils de dosage (32) comprend un élément de dosage (34) qui peut être déplacé entre une première position et une deuxième position,
    dans la première position, l'élément de dosage (34) étant adapté pour permettre l'amenée de l'au moins un brin (10) du matériau de départ (14) vers le rouleau d'insertion (20), et
    dans la deuxième position, l'élément de dosage (34) étant adapté pour empêcher ou exclure l'amenée de l'au moins un brin (10) du matériau de départ (14) vers le rouleau d'insertion (20).
  5. Dispositif d'amenée (8) selon la revendication 4, caractérisé en ce que l'élément de dosage (34) peut être déplacé dans des positions intermédiaires quelconques entre la première et la deuxième position.
  6. Dispositif d'amenée (8) selon la revendication 4 ou 5, caractérisé en ce que l'élément de dosage (34) est réalisé sous forme d'élément de serrage qui, dans la deuxième position, est adapté pour être en engagement avec l'au moins un brin (10) du matériau de départ (14) à une position qui est agencée dans une direction d'amenée (Z) avant le rouleau d'insertion (20), afin d'empêcher ou d'exclure l'amenée de l'au moins un brin (10) du matériau de départ (14) vers le rouleau d'insertion (20).
  7. Dispositif d'amenée (8) selon la revendication 4 ou 5, caractérisé en ce que l'élément de dosage (34) est réalisé sous forme d'auge qui est adaptée pour, dans la première position, guider l'au moins un brin (10) du matériau de départ (14) dans une zone d'engagement du rouleau d'insertion (20) et, dans la deuxième position, ne pas guider l'au moins un brin (10) du matériau de départ (14) dans la zone d'engagement du rouleau d'insertion (20) afin d'empêcher ou d'exclure l'amenée du matériau de départ (14).
  8. Dispositif d'amenée (8) selon la revendication 4 ou 5, caractérisé en ce que l'élément de dosage (34) comprend une première et une deuxième section (34a, 34b), la première section (34a) étant réalisée sous forme d'élément de serrage qui est adapté pour, dans la deuxième position, être en engagement avec l'au moins un brin (10) du matériau de départ (14) à une position qui est agencée dans une direction d'amenée (Z) avant le rouleau d'insertion (20) afin d'empêcher ou d'exclure l'amenée de l'au moins un brin (10) du matériau de départ (14) ; et
    la deuxième section (34b) étant réalisée sous forme d'auge qui est adaptée pour, dans la première position, guider l'au moins un brin (10) du matériau de départ (14) dans une zone d'engagement du rouleau d'insertion (20) et, dans la deuxième position, ne pas guider l'au moins un brin (10) du matériau de départ (14) dans la zone d'engagement du rouleau d'insertion (20) afin d'empêcher ou d'exclure l'amenée du matériau de départ (14).
  9. Dispositif d'amenée (8) selon l'une quelconque des revendications 4 à 8, caractérisé en ce que chaque appareil de dosage (32) de la pluralité d'appareils de dosage (32) comprend un appareil d'actionnement (38) pour déplacer l'élément de dosage respectif (34) entre la première et la deuxième position.
  10. Installation de formation de non-tissé (2) pour former ou profiler une bande de matériau (4), l'installation de formation de non-tissé (2) comprenant un dispositif de transport (6) pour transporter la bande de matériau (4) dans une direction de transport (T) ; et au moins un dispositif d'amenée (8) selon l'une quelconque des revendications 1 à 9 pour amener des fibres désagrégées sur le dispositif de transport (6).
  11. Procédé pour former ou profiler une bande de matériau (4) au moyen d'un dispositif d'amenée (8) selon l'une quelconque des revendications 1 à 9, le procédé comprenant les étapes suivantes :
    - l'amenée d'une pluralité de brins (10) d'un matériau de départ (14) de fibres vers le rouleau d'insertion (20), les brins (10) étant agencés côte à côte dans une direction axiale du rouleau d'insertion (20) ;
    - l'insertion de la pluralité de brins (10) du matériau de départ (14) qui lui est amenée dans la direction du rouleau ouvreur (26) par le rouleau d'insertion (20) ;
    - la désagrégation de la pluralité de brins (10) insérés du matériau de départ (14) par le rouleau ouvreur (26) pour former des fibres désagrégées ;
    - l'épandage des fibres désagrégées sur un dispositif de transport (6) pour former ou profiler la bande de matériau (4) ; et
    - la régulation de l'amenée d'au moins un premier et un deuxième brin (10) de la pluralité de brins (10) du matériau de départ (14) les uns par rapport aux autres vers le rouleau d'insertion (20).
  12. Procédé selon la revendication 11, caractérisé en ce que la régulation de l'amenée comprend la modification d'un rapport entre la masse du matériau de départ amenée (14) et le temps, une rotation du rouleau d'insertion (20) ou la longueur du matériau de départ (14) d'au moins un parmi le premier et le deuxième brin (10).
  13. Procédé selon la revendication 11 ou 12, caractérisé en ce que la régulation de l'amenée comprend l'autorisation d'une amenée essentiellement non entravée d'au moins un parmi le premier et le deuxième brin (10) vers le rouleau d'insertion (20), ou l'engagement d'au moins un parmi le premier et le deuxième brin (10) à une position qui est agencée dans une direction d'amenée (Z) avant le rouleau d'insertion (20) afin d'empêcher ou d'exclure la poursuite de l'insertion.
  14. Procédé selon la revendication 11 ou 12, caractérisé en ce que la régulation de l'amenée comprend le guidage d'au moins un parmi le premier et le deuxième brin (10) dans une zone d'engagement du rouleau d'insertion (20) afin de permettre la poursuite de l'insertion, ou le guidage d'au moins un parmi le premier et le deuxième brin (10) hors de la zone d'engagement du rouleau d'insertion (20) afin d'empêcher ou d'exclure la poursuite de l'insertion.
  15. Procédé selon l'une quelconque des revendications 11 à 14, caractérisé en ce que le rouleau d'insertion (20) tourne à vitesse constante pendant la régulation.
EP19174837.5A 2019-05-16 2019-05-16 Dispositif d'alimentation d'une installation de formation du non-tissé Active EP3739089B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19174837.5A EP3739089B1 (fr) 2019-05-16 2019-05-16 Dispositif d'alimentation d'une installation de formation du non-tissé
US16/863,704 US11732386B2 (en) 2019-05-16 2020-04-30 Feed device of a fleece-forming machine
CN202010407981.7A CN111945256B (zh) 2019-05-16 2020-05-14 成绒机的进料装置

Applications Claiming Priority (1)

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EP19174837.5A EP3739089B1 (fr) 2019-05-16 2019-05-16 Dispositif d'alimentation d'une installation de formation du non-tissé

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EP3739089B1 true EP3739089B1 (fr) 2022-08-10

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EP4148173B1 (fr) * 2020-08-11 2024-01-17 Fameccanica.Data S.p.A. Procédé et appareil de production d'éléments non tissés contenant du graphène

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Publication number Priority date Publication date Assignee Title
DE1685611A1 (de) * 1967-01-23 1971-08-19 Temafa Textilmaschf Meissner Vorratsschacht fuer Fasergut od.dgl.
US4823440A (en) * 1986-07-18 1989-04-25 John D. Hollingsworth On Wheels, Inc. Web weight control system
DE3913997A1 (de) * 1989-02-14 1990-08-23 Rieter Ag Maschf Dosierverfahren und -vorrichtung zur abgabe vorgebbarer mengen von faserflocken
US5257438A (en) * 1990-02-14 1993-11-02 Maschinenfabrik Rieter Ag Dosing method and apparatus for the delivery of predeterminate quantities of fiber flocks per unit of time
ITMI981618A1 (it) * 1998-07-14 2000-01-14 Marzoli & C Spa Dispositivo e procedimento equalizzatore della alimentazione delle fibre in materassino ad una carda
RU2202432C1 (ru) * 2001-11-09 2003-04-20 Лехов Тагир Алиевич Устройство для правки проволоки
DE102004042119A1 (de) 2004-08-30 2006-03-02 Trützschler GmbH & Co KG Vorrichtung zur Herstellung eines Faservlieses, z.B. aus Baumwolle, Chemiefasern o.dgl.
DE102005040399A1 (de) * 2005-08-25 2007-03-01 Maschinenfabrik Rieter Ag Flockenbeschickungssystem
WO2009010995A1 (fr) * 2007-07-19 2009-01-22 Marzoli S.P.A. Dispositif de préparation de fibres en floc destinées à être adressées à une machine à carder
ATE533874T1 (de) * 2007-09-06 2011-12-15 Dilo Kg Maschf Oskar Vorrichtung zur verdichtung von faserflocken
EP2695982A1 (fr) * 2012-08-06 2014-02-12 Oskar Dilo Maschinenfabrik KG Dispositif et méthode pour égaliser ou obtenir un profil donné à un matelas de flocons de fibres
EP2695980A1 (fr) * 2012-08-06 2014-02-12 Oskar Dilo Maschinenfabrik KG Dispositif d'acheminement pour fibres ou flocons
EP3450603B1 (fr) * 2017-09-01 2020-04-29 Oskar Dilo Maschinenfabrik KG Procédé de formation d'un non-tissé profilé

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EP3739089A1 (fr) 2020-11-18
CN111945256A (zh) 2020-11-17
US20200362478A1 (en) 2020-11-19
US11732386B2 (en) 2023-08-22
CN111945256B (zh) 2022-09-20

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