EP1384804B1 - Verfahren zur Begrenzung der Verschmutzung einer Nadelmachine mit fliegenden Fasern und Nadelmachine dafür - Google Patents

Verfahren zur Begrenzung der Verschmutzung einer Nadelmachine mit fliegenden Fasern und Nadelmachine dafür Download PDF

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Publication number
EP1384804B1
EP1384804B1 EP03291659A EP03291659A EP1384804B1 EP 1384804 B1 EP1384804 B1 EP 1384804B1 EP 03291659 A EP03291659 A EP 03291659A EP 03291659 A EP03291659 A EP 03291659A EP 1384804 B1 EP1384804 B1 EP 1384804B1
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EP
European Patent Office
Prior art keywords
blowing
plate
air
needling machine
needles
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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.)
Expired - Lifetime
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EP03291659A
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English (en)
French (fr)
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EP1384804A1 (de
Inventor
François LOUIS
Xavier Delassus
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Asselin Thibeau SAS
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Asselin Thibeau SAS
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    • 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
    • D04H18/00—Needling machines
    • D04H18/02—Needling machines with needles

Definitions

  • the present invention relates to a method for limiting the fouling of a needling machine by the flying fibers constituting the needling sheet, more particularly to limit the fouling of the needling and needling plates, and by extension of the needle boards.
  • the present invention also proposes a needling machine implementing this method.
  • a needling machine conventionally comprises at least one board, provided with a set of parallel needles, actuated back and forth in the longitudinal direction of the needles to repeatedly penetrate through a sheet of fibers so as to consolidate the sheet by interlacing the fibers that compose it.
  • the path of the fibers in the working zone of the needles is conventionally defined between two plates provided with perforations for the passage of the needles.
  • the plate on the side where the needles are when in the retracted position is referred to as the "stripping plate”. It serves to prevent the fiber web from being driven by the needles back into the retracted position.
  • the other plate used to prevent the web of fibers from being pushed by the tips of the needles, is called “needling plate”.
  • fibers may be more or less driven by the needles outside the two plates. These fibers tend to clog the needle passage holes in the plates and also to accumulate with time at the base of the needles forming a very hard mattress capable of deforming the stripping plate at the time of striking the needles.
  • the present invention proposes a solution to achieve this objective.
  • the document FR 2 541 324 describes needling cleaning means that can be implemented continuously with the machine running.
  • These means comprise a box formed under the needling table in the longitudinal direction of the machine.
  • worm-type means capable of mechanically evacuating the flying fibers to an outlet end of the box.
  • pneumatic means blowing an inlet port at one end of the box and a suction through an outlet conduit at the other end of the box.
  • the document US 5,148,584 discloses a needle board and an associated stripper to reduce the marking of the sheet due to needling step by step.
  • the board has areas in which the needles are tightened as much as possible in groups of rows.
  • the associated stripper has lights for the passage of entire sets of needles instead of individual needle holes. Transverse zones (relative to the movement of the sheet) are provided between the lights to ensure the mechanical strength of the stripper. In these transverse zones may be provided blow and / or suction lines.
  • the invention proposes a method according to claim 1, which differs from the documents FR 2 541 324 and US 5,148,584 in particular that it allows the blowing to be performed discontinuously to alternate blowing periods with periods of stopping.
  • the method according to the invention makes it possible to operate in jerks to unhook fibers, and may furthermore comprise a reconstitution with the aid of a booster, during periods of stopping, of a reserve of air under pressure. raised from an existing compressed air network.
  • High velocity air jets can typically be obtained by guiding air under pressure through orifices of small dimensions, for example in a discharge ramp supplied by a source of pressurized air.
  • the blowing can be carried out in different ways depending on the plate concerned and also depending on the type of machine (single or double strike and double needling vis-à-vis).
  • Means for managing the characteristics of the air flows to be produced and, where appropriate, the blowing periods may be provided.
  • the blowing is preferably carried out as close to the flush of the plates and horizontally.
  • the needling machine shown in FIG. 1 comprises a generally horizontal perforated needling plate 1 and a retaining plate 2, also called a "cleaning plate", placed approximately parallel to a certain distance above the plate 1.
  • the stripping plate 2 and the needling plate 1 define between them a path in a substantially horizontal plane for a ply of fibers 3.
  • the stripping plate 2 comprises perforations aligned with those of the plate 1.
  • means of introduction 4 schematically in the form of a pair of drive rollers between which passes the web 3.
  • the ply 3 consolidated and compacted by needling is driven by extractor means 6 also schematized by two motor rollers between which the web passes 3.
  • the stripping plate 2 is placed between the path of the sheet 3 and a needle board 7.
  • the board 7 bears on the side of the stripping plate 2 a large number of needles 8 oriented perpendicularly to the plane of the path of the sheet 3 , with their point directed towards the sheet 3.
  • Each needle is positioned in front of a perforation of the cleaning plate 2 and a corresponding perforation of the plate 1.
  • the needle board 7 is attached to a support beam 9 itself fixed to the end of at least one rod 11 slidably mounted along an axis 12, parallel to the needles 8 and perpendicular to the plane of the path of the web 3. If there are several rods 11, they are for example aligned one behind the other when viewed in the manner shown in Figure 1.
  • the moving equipment consisting of the sliding rod or rods 11, the support beam 9 and the board 7 is driven in service reciprocating back and forth in the direction 12 between a position 7a in which the end of the needles, designated in this case by 8a, passes through the stripping plate 2, the sheet 3 and the plate 1, and a release position shown in solid lines, in which the needles 8 are completely exposed at least of the plate 1 and the sheet 3, and preferentially The backing plate 2.
  • the reciprocating mechanism is not described in more detail here.
  • the stripping plate 2 is fixed on two upper lateral uprights 15a and 15b of the needling frame while the needling plate 1 is fixed on two lower side uprights 15c and 15d. Means (not visible in Figure 1) are provided to allow the disassembly and easy reassembly of these plates 1 and 2.
  • a blowing ramp 16 is disposed above the stripping plate 2 so as to laterally drive the fibers which in operation are driven upwards out of the stripping plate by the movement in va-and - needles.
  • a second blowing ramp 17 is provided below the needling plate 1 for laterally displacing the fibers that are driven by the needles under the needling plate 1.
  • the ramps 16 and 17 each consist of a hollow tube attached here respectively to the lateral upright of the upper frame 15a and lower 15c of the frame of the needling machine, and so as to extend longitudinally opposite the needle edge 10 of the board 7 to the passage thereof, perpendicular to the direction of transport of the web 3.
  • the ramps 16 and 17 are arranged on the same side 15a of the machine corresponding to the outlet of the sheet 3.
  • the tubes are provided with small diameter blow holes, arranged in line opposite the needle edge 10, and so that the jets of air projected by these orifices are substantially horizontal, perpendicular to the edge of the needles 10 (shown diagrammatically by the arrows F) and as close as possible flush with the outer faces of the plates 1 and 2.
  • Conventional means and known per se are used to fix the blowing ramps 16 and 17.
  • the interior of each ramp is placed in communication, preferably by the two ends of the ramp, with a source of air under pressure, for example by means of a system of pipes fixed to the frame of the needling machine and connected to a cylinder pressurized air.
  • the pressure of the bottle is preferably chosen high, typically 9 bar, to obtain, given the different pressure losses, air jets capable of effectively chasing the fibers outside the plates.
  • Adjustment valves possibly automated, are also provided between the cylinder and the ramps to adjust the characteristics of the air jets expelled by the blowing outlets of the ramps. Means are also provided for then automatically controlling the closing and opening of the valves to create blowing periods and stopping periods during operation of the needling machine.
  • openings 18 are formed in the lateral frame upright 15b located opposite the machine.
  • the openings 18 are formed at the base of the lateral upright opposite the direction of blowing. They are distributed over the length of the machine, at least over the length opposite the blowing ramp located on the lateral upright opposite frame.
  • blow ramps can be arranged parallel to the direction of movement of the web, on the front or rear of the machine.
  • the needling machine represented in FIG. 2 is a single-needle needling machine comprising, in a conventional manner, two needle boards 20 and 21 arranged side by side along the path of the sheet 3 to needling and making it possible therefore to perform a double needling of the sheet 3. It conventionally comprises for the two planks a single stripping plate 22 and a single needling plate 23. These various component parts have the same characteristics as in the needling machine of FIG. 1 and the boards 20 and 21 are similarly actuated by come and go.
  • the blowing on the outer face of the stripping plate 22 is preferably carried out, as can be seen in FIG. 2, by means of two blow ramps 24, 25, similar to those of FIG. 1, but installed on the central upright 26 of the frame of the machine and so advantageously to direct each air flow to the outside of the machine in opposite directions (F1, F2) to each other .
  • openings 18 are formed in the external lateral frame uprights adapted to the evacuation outside the machine of the fibers blown by the ramps 24 and 25.
  • FIG. 2 also illustrates the fact that, according to the invention, it is possible to use, beneath the needling plate 23, two blowing ramps facing each other, such as 28, 29 on the side of the board 20, replacing a single ramp 17 as in Figure 1.
  • This allows to use less pressure by only reaching half the distance between the two ramps.
  • it will advantageously alternate the blowing by one and the other of the ramps 28, 29 to not upset the flow.
  • it will be understood that in the interests of simplifying the system of pressurized air ducts, it is also possible, in the case of a simple two-ply striking machine, to prefer that the entire blowing be carried out from the central uprights of the duct. frame.
  • FIG. 3 illustrates another type of needling, called double-striker, to which the invention can be applied.
  • the needling machine distinguished by two needle boards moved back and forth symmetrically: a board 45 located above a stripping plate 46, as in the machines of Figures 1 and 3, and a board 47 located symmetrically below the second plate 48 in this case also constituting a cleaning plate.
  • the web 3 is thus needled according to its two faces (with an alternating movement of the boards).
  • a single ramp 51 is preferably provided for blowing on the outer face of the machine.
  • Venting openings 18 in the side frame uprights also allow to evacuate out of the machine air charged with blown fibers by the ramps 50 and 51.
  • the ramps 50 and 51 on the input side of the web 3 in the needling machine. This may be advantageous for some types of volatile fibers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Laminated Bodies (AREA)

Claims (20)

  1. Verfahren zur Begrenzung der Verschmutzung einer Nadelmaschine mit den ein zu vernadelndes Vlies (3) bildenden fliegenden Fasern, wobei die Nadelmaschine mindestens ein Brett (7, 20, 21, 45, 47) umfasst, das einen Satz von parallelen Nadeln (8) trägt, wobei dieses Brett hin- und herbewegt wird zwischen einer zurückgezogenen Stellung der Nadeln und einer Stellung des maximalen Eindringens der Nadeln durch eine erste Platte (2, 22, 46, 48), das zu vernadelnde Vlies (3) und eine zweite Platte (1, 23, 46, 48), bei dem man seitlich auf eine nicht mit dem Vlies in Kontakt befindliche Außenseite mindestens einer der Platten (1, 2, 22, 23, 46, 48) während mindestens eines Teils der Betriebszeit der Nadelmaschine Druckluft bläst,
    dadurch gekennzeichnet, dass die Luft intermittierend geblasen wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Luft in Form von Strahlen (F) geblasen wird, die von durch Öffnungen geblasener Druckluft gebildet werden.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass es außerdem die Wiederherstellung einer Reserve von Luft unter hohem Druck aus einem bestehenden Druckluftnetz während Unterbrechungsperioden mit Hilfe eines Kompressors umfasst.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Luft seitlich in einer Richtung geblasen wird, und zwar so, dass die Fasern seitlich aus der Maschine getrieben werden.
  5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Luft seitlich abwechselnd in zwei entgegengesetzten Richtungen geblasen wird, und zwar so, dass mindestens die Hälfte des Durchgangsquerschnitts der Nadeln bedeckt wird.
  6. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Blasrichtung horizontal ist.
  7. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Blasung auf gleicher Höhe mit der Platte (1, 2, 22, 23, 46, 48) durchgeführt wird.
  8. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Blasung auf der Außenseite der Platte (2, 22, 46, 48), die auf der Seite der zurückgezogenen Stellung der Nadeln gelegen ist, und in nur einer seitlichen Blasrichtung vorgenommen wird.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass die Blasung außerdem auf der Außenseite der Platte (1, 23), die auf der Seite der Eindringstellung der Nadeln gelegen ist, und in zwei entgegengesetzten seitlichen Blasrichtungen vorgenommen wird.
  10. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass, wenn die Luft in einer einzigen Richtung geblasen wird, sie vom Eintritt des zu vernadelnden Vlieses aus in der Vorschubrichtung dieses Vlieses geblasen wird.
  11. Nadelmaschine zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, umfassend:
    - einen Rahmen (15a, 15; 26);
    - die erste Platte (2, 22, 46, 48);
    - die zweite Platte (1, 23, 46, 48); und
    - mindestens ein Brett (7; 20, 21; 45, 47), auf dem die Nadeln (8) vorstehen und das mit einem Betätigungsmechanismus zur,Durchführung der Hin- und Herbewegung verbunden ist;
    - Blasmittel (16, 17; 24, 25, 28, 29, 50, 51), die dafür ausgelegt sind, Druckluft seitlich auf die nicht mit dem Vlies in Kontakt befindliche Außenseite mindestens einer dieser Platten (1, 2, 22, 23, 46, 48) zu blasen,
    dadurch gekennzeichnet, dass die Blasmittel Mittel umfassen, um das Blasen in Blasperioden zu steuern, die mit Unterbrechungsperioden abwechseln.
  12. Nadelmaschine nach Anspruch 11, dadurch gekennzeichnet, dass die Blasmittel umfassen:
    - mindestens eine seitliche Blasrampe (16, 17; 24, 25, 28, 29, 50, 51), die auf dem Rahmen (15a, 15b, 15c, 15d, 26) montiert ist und Blasöffnungen umfasst, die dafür ausgelegt sind, Luftstrahlen auf diese Plattenaußenseite zu blasen; und
    - Mittel zur Erzeugung von Druckluft, die dazu bestimmt sind, mit dem Inneren der Rampe in Verbindung gesetzt zu werden.
  13. Nadelmaschine nach Anspruch 12, gekennzeichnet durch eine Rampe (16, 24, 25, 50, 51), die auf dem Rahmen so gelegen ist, dass Luftstrahlen auf die Außenseite der Platte mindestens auf dem Durchgangsquerschnitt der Nadeln geblasen werden.
  14. Nadelmaschine nach Anspruch 12 oder 13, gekennzeichnet durch eine zweite seitliche Blasrampe (17, 28, 29), die auf dem Rahmen so gelegen ist, dass Luftstrahlen auf die Außenseite der zweiten Platte (1, 23, 49) mindestens auf dem Durchgangsquerschnitt der Nadeln geblasen werden.
  15. Nadelmaschine nach Anspruch 12 oder 13, gekennzeichnet durch zwei seitliche Blasrampen (28, 29), die auf dem Rahmen so gelegen sind, dass sie Luftstrahlen auf die Außenseite der zweiten Platte (23) in zwei entgegengesetzten Richtungen mindestens auf der Hälfte des Durchgangsquerschnitts der Nadeln blasen.
  16. Nadelmaschine nach einem der Ansprüche 11 bis 15,
    dadurch gekennzeichnet, dass jede Rampe (16, 24, 25, 50, 51) möglichst nahe auf Höhe der entsprechenden Platte und so gelegen ist, dass Luftstrahlen in einer horizontalen Richtung geblasen werden.
  17. Nadelmaschine nach einem der Ansprüche 11 bis 16,
    dadurch gekennzeichnet, dass der Rahmen in seinen seitlichen äußeren Ständern Öffnungen (18) umfasst, die der mit geblasenen Fasern geladenen Luft gestatten, aus der Nadelmaschine ausgestoßen zu werden.
  18. Nadelmaschine nach einem der Ansprüche 11 bis 17,
    dadurch gekennzeichnet, dass die Blasrampe bzw. - rampen auf dem Rahmen der Nadelmaschine auf der Seite des Eintritts des Vlieses vorgesehen sind und dafür ausgelegt sind, in der Vorschubrichtung des Vlieses zu blasen.
  19. Nadelmaschine nach einem der Ansprüche 11 bis 18,
    dadurch gekennzeichnet, dass es sich um eine Doppelschlag-Maschine handelt, die zwei Nadelbretter (45, 47) umfasst, die einander gegenüber über und unter dem zu vernadelnden Vlies angeordnet sind.
  20. Nadelmaschine nach einem der Ansprüche 11 bis 19,
    dadurch gekennzeichnet, dass es sich um eine Einfachschlag-Maschine handelt, die zwei Nadelbretter (20, 21), die längs des Wegs des zu vernadelnden Vlieses (3) nebeneinander angeordnet sind, und einen zentralen Rahmenteil (26) zwischen den beiden Brettern (20, 21) umfasst, wobei die Blasmittel (24, 25) dafür ausgelegt sind, Druckluft seitlich in zwei entgegengesetzten Richtungen von dem zentralen Rahmenteil (26) aus und so zu blasen, dass die Fasern auf jeder Seite aus der Platte ausgestoßen werden.
EP03291659A 2002-07-26 2003-07-04 Verfahren zur Begrenzung der Verschmutzung einer Nadelmachine mit fliegenden Fasern und Nadelmachine dafür Expired - Lifetime EP1384804B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0209578 2002-07-26
FR0209578A FR2842835B1 (fr) 2002-07-26 2002-07-26 Procede pour limiter l'encrassement d'une aiguilleteuse par des fibres volantes et une aiguilleteuse mettant en oeuvre ledit procede

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EP1384804A1 EP1384804A1 (de) 2004-01-28
EP1384804B1 true EP1384804B1 (de) 2007-10-24

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EP03291659A Expired - Lifetime EP1384804B1 (de) 2002-07-26 2003-07-04 Verfahren zur Begrenzung der Verschmutzung einer Nadelmachine mit fliegenden Fasern und Nadelmachine dafür

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EP (1) EP1384804B1 (de)
AT (1) ATE376599T1 (de)
DE (1) DE60317016T2 (de)
FR (1) FR2842835B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2305871A1 (de) 2009-09-30 2011-04-06 VÚTS, a.s. Verfahren und Vorrichtung zur Verringerung des Geräusches, das während des Betriebs einer Nadelmaschine zur Herstellung von Vliesstoffen entsteht
EP4144904A1 (de) * 2021-09-06 2023-03-08 Andritz Asselin-Thibeau Nadelmaschine zum nadeln einer faserbahn oder eines faservlieses, insbesondere eines faservlieses
EP4361331A1 (de) * 2022-10-31 2024-05-01 Rohr, Inc. Systeme und verfahren zur sprühreinigung von nadeln zur verstärkung durch die dicke von mit harz infundierten geweben

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2880635B1 (fr) * 2004-11-24 2007-04-06 Asselin Soc Par Actions Simpli Aiguilleteuse a hauteur de tete reglable
CN107059253B (zh) * 2017-06-07 2022-08-26 江苏迎阳无纺机械有限公司 针刺机的带气流挡片的剥网板结构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541324B1 (fr) * 1983-02-23 1985-08-16 Rhone Poulenc Fibres Procede et dispositif pour le nettoyage des machines a aiguilleter
DE4114873A1 (de) * 1990-05-16 1991-11-21 Fehrer Ernst Vorrichtung zum nadeln eines vlieses
FR2698386B1 (fr) * 1992-11-23 1995-01-06 Asselin Aiguilleteuse et procédé d'aiguilletage s'y rapportant.
AT402205B (de) * 1995-10-18 1997-03-25 Fehrer Textilmasch Vorrichtung zum nadeln eines vlieses
JPH09302564A (ja) * 1996-05-09 1997-11-25 Okuma Mach Works Ltd 不織布製造におけるパンチング工程での風綿除去装置
IT1298629B1 (it) * 1998-03-16 2000-01-12 Federico Aspesi S R L Metodo e apparecchiatura per il trattamento di materiali tessili finiti

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2305871A1 (de) 2009-09-30 2011-04-06 VÚTS, a.s. Verfahren und Vorrichtung zur Verringerung des Geräusches, das während des Betriebs einer Nadelmaschine zur Herstellung von Vliesstoffen entsteht
EP4144904A1 (de) * 2021-09-06 2023-03-08 Andritz Asselin-Thibeau Nadelmaschine zum nadeln einer faserbahn oder eines faservlieses, insbesondere eines faservlieses
EP4361331A1 (de) * 2022-10-31 2024-05-01 Rohr, Inc. Systeme und verfahren zur sprühreinigung von nadeln zur verstärkung durch die dicke von mit harz infundierten geweben

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Publication number Publication date
DE60317016T2 (de) 2008-08-14
FR2842835B1 (fr) 2005-01-14
EP1384804A1 (de) 2004-01-28
FR2842835A1 (fr) 2004-01-30
DE60317016D1 (de) 2007-12-06
ATE376599T1 (de) 2007-11-15

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