EP1736585A1 - Verfahren zum arbeiten ein Vliess mit einem Vernadelungmaschine und Maschine - Google Patents

Verfahren zum arbeiten ein Vliess mit einem Vernadelungmaschine und Maschine Download PDF

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Publication number
EP1736585A1
EP1736585A1 EP06290966A EP06290966A EP1736585A1 EP 1736585 A1 EP1736585 A1 EP 1736585A1 EP 06290966 A EP06290966 A EP 06290966A EP 06290966 A EP06290966 A EP 06290966A EP 1736585 A1 EP1736585 A1 EP 1736585A1
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EP
European Patent Office
Prior art keywords
needling
needles
consolidation
installation according
movement
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.)
Withdrawn
Application number
EP06290966A
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English (en)
French (fr)
Inventor
Robert Jean
François LOUIS
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Asselin Thibeau SAS
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Asselin Thibeau SAS
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Filing date
Publication date
Application filed by Asselin Thibeau SAS filed Critical Asselin Thibeau SAS
Publication of EP1736585A1 publication Critical patent/EP1736585A1/de
Withdrawn legal-status Critical Current

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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 opening a sheet in a pre-needling apparatus and then in a consolidation apparatus.
  • the present invention also relates to an installation for carrying out the method.
  • An unbound sheet of fibers is generally composed of superimposed layers of fibers exiting for example a spreader-lapper. In each layer, the fibers are parallel to each other. However, the direction of the fibers in a layer is different from the direction of the fibers in the immediately underlying layer and in the layer immediately superimposed.
  • An unconsolidated web must be worked in a consolidation machine whose function is to bind the fibers together, in particular from one layer to another, and jointly to compact the web. Once consolidated, the sheet has an appreciable mechanical strength. It is therefore relatively easy to extract the web of the consolidation machine, for example by passing the web between two extractor rollers.
  • a well-known apparatus for the consolidation operation is the needling machine.
  • multiple needles oriented transversely to the plane of the web are driven by a fast back and forth to pass periodically through the web and thus interlace the fibers of the different layers.
  • extractor rollers are placed at the exit of a needling machine, traction on the consolidated sheet is not transmitted at the entry of the needling machine only when the needles are in their withdrawal phase, that is to say freed from the sheet. And anyway, given the low resistance of the web upstream of the needling, this traction transmitted through the needling is likely to affect the homogeneity of the web.
  • the needles follow the advancing movement of the web while they are in the penetration phase, there is no longer the problem of a stretching of the web between the extractor rollers and the needles when the needles are in phase. penetration.
  • the needles in the penetration phase by their movement in the direction of advancement of the web, help it to penetrate inside the needling machine.
  • Pre-needling cylinders are also known in which pre-needling needles are linearly reciprocated transversely to the plane of the sheet emerging for example from a crosslapper.
  • the needles Before entering the web, the needles pass through orifices of a cylinder which is rotated in the direction of advancement of the web and whose outer peripheral wall is in contact with the web.
  • This cylinder thus plays the role of a movable stripper whose outer surface, in contact with the web, accompanies the movement of the web.
  • the rate of striking of the needles and the circumferential displacement of the cylinder correspond to one or more circumferential steps of succession of the orifices.
  • the needles coincide each time with respective holes of the cylinder.
  • the sheet is pre-consolidated, thus capable of transmitting a certain traction force, and its passage through the following needling is thus facilitated.
  • the pre-consolidated web already has a certain cohesion for example to store it and consolidate it definitively only later, and / or in a remote location.
  • cylinder pre-needling machines have certain limitations and disadvantages. As the needle holder is inside the cylinder it can only be supported at its ends located on either side of the width of the sheet. The problem of the bending of the needle holder makes it necessary to limit the operating rate and the number of needles, especially with wide webs.
  • the orifices of the cylinder are substantially fixed with respect to the sheet, so that the pre-needling work, instead of being uniformly distributed over the surface of the sheet, is concentrated at the points of the sheet which have come to coincide with the orifices of the cylinder. This results in a marking that the subsequent process of consolidation does not always succeed in making disappear.
  • the object of the invention is thus to provide a method and an installation which makes it possible to consolidate a sheet of fibers at a relatively high rate with a deformation of the sheet which is particularly reduced.
  • the method for forming a sheet in a pre-needling apparatus and then in a consolidation apparatus in which a combined movement comprising a transverse reciprocation is made to pre-needling needles. at the plane of the sheet and an advancement movement in the direction of advancement of the sheet when the needles are in the penetration phase in the sheet, is characterized in that the advancing movement of the pre-needling needles is used to impart to the sheet a movement favoring the introduction into the consolidation apparatus.
  • the combined movement concerns only a pre-needling, which can be performed with a relatively small number of needles, as well as a volume and a mass of relatively moving parts. reduced, and even, according to a possible feature of the invention, with a reduced rate compared to that of the consolidation apparatus.
  • it limits the air movements, vibrations and additional mechanical stresses imposed on the installation by the horizontal component of the movement, while applying this horizontal component where it is really necessary, ie to the entry into the consolidation process itself.
  • the sheet of the pre-needling apparatus is passed directly to the consolidation apparatus, preferably by pre-needling and consolidation in the same machine.
  • the consolidation consists of needling with a linear movement of the needles
  • an advantageous version of the method according to the invention consists in actuating the needling and needling needles at the same rate and in synchronizing the cycles of pre-needling. needling and needling so that the needling needles are in the penetration phase during the withdrawal phases of the needling needles, and needling needles are in the withdrawal phase when the pre-needling needles are in the penetration phase.
  • the needling needles in the withdrawal phase advance the sheet which can be jointly pulled by extractor rollers at the exit needling.
  • needling needles penetrate optimal conditions through a sheet which is stopped or at a reduced speed, the extractor rollers at the exit of the needling machine being able to be stopped or respectively slowed down.
  • the plant for working a fiber web for the implementation of a method according to the first aspect, comprising, along a path for the fiber web, an apparatus for needling followed by a consolidation apparatus, the pre-needling apparatus comprising means for imparting to a pre-needling needle a combined movement comprising a reciprocating transverse to the plane of the sheet and a movement of and -extremely parallel to the advancement movement of the web, is characterized in that the output of the pre-needling apparatus and the entry of the consolidation apparatus are in relation of conservation of the movement of advancement of the tablecloth.
  • the pre-needling equipment can be placed closer to the needling equipment, which improves the propulsion effect of the sheet by the pre-needling equipment into the needling equipment. At the same time the overall size is reduced and the textile result is improved.
  • the support means is a rotary cylinder having recesses for the needle tips; these recesses preferably being gaps between annular lamellae.
  • the bottoms of the recesses are preferably formed by fingers which extend beyond the slats in the direction of the next apparatus, so in particular the consolidation equipment.
  • Another important aspect of the invention relates to a mechanism capable of giving needles an advantageous elliptical motion.
  • This mechanism comprises, in particular in the pre-needling apparatus according to the invention, a mobile unit with a support for the needles and attached to two connecting rod-crank systems by two axes of parallel positioning, and eccentric radii of the two crank-crank systems are capable of mutual angular stall such that dead points of the respective races of the two positioning axes are offset in time with respect to each other .
  • the angular setting is preferably adjustable, which has the effect of adjusting the amplitude of the component of the movement of the needles parallel to the direction of advancement of the sheet.
  • the two connecting rods are oriented with their ends forming a connecting rod pointing in the direction generally opposite to the plane of the web.
  • the process of inversion of the direction of the vertical component of the movement of the needles in the vicinity of the maximum penetration position takes place very slowly, with a quasi-stop time during which part of the movement of the needles in the direction of advancement of the sheet is effected efficiently and in good conditions.
  • the mechanism is particularly compact.
  • the installation comprises, along a path 1 for a layer of fibers (not shown in FIG. 1), a consolidation apparatus 2 directly preceded according to the invention by an apparatus 3.
  • an introducer apparatus 4 upstream of the pre-needling apparatus 3 relative to the direction of advance 6 of the web, and an extractor apparatus 7 located downstream of the apparatus of needling 2 and constituted by two rotary cylinders 8 defining between them a nip 9 for the web following the path 1 which is substantially plane.
  • distal and proximal will mean “relatively distant” and respectively “relatively close” to the path plan 1.
  • the pre-needling apparatus 3 and the needling apparatus 2 are united in a common box 11 and thus belong to one and the same machine.
  • the casing 11 comprises an inlet window 12 in which the introducer apparatus 4 is installed and an outlet window 13 in which the extractor apparatus 7 is installed.
  • the needling apparatus 2 is in itself conventional.
  • a crew 14 is linearly reciprocable in a sliding direction 16 fixed perpendicular to the plane of the path 1 of the web.
  • a sliding rod 17 belonging to the crew 14 is slidably mounted in a sliding guide 18 fixed to a frame 19 of the machine, to which the box 11 is also fixed.
  • the crew 14 further comprises a support 21 fixed to the proximal end of the rod 17 and a needle board 22 interchangeably fixed on the support 21.
  • needling needles 23, only two of which are shown and the others are shown schematically by the mixed line 23a, are oriented perpendicular to the plane of the 1 and distributed on the surface of the board 22.
  • the path of the ply is defined by a needling table 24 adjacent to the face of the ply opposite to the needle board 22, and by a stripper 26 adjacent to the face of the web facing the needle board 22.
  • the table 24 and the stripper 26 have orifices which are traversed by the needles 23 when they are in the maximum penetration position shown in FIG. 1 .
  • the needling apparatus 2 For the generation of the movement back and forth, the needling apparatus 2 comprises a connecting rod 27 whose head 28 is articulated to an eccentric pin 29 of an eccentric shaft 31, and whose foot 32 is hinged to the distal end of the sliding rod 17.
  • the pre-needling apparatus 3 comprises a moving assembly 36 (see FIG. 5) comprising in turn at least one rod 38, and in practice several rods 38 which are aligned in the direction of the width of the web, and of which by therefore only one is visible in Figure 5.
  • the rod 38 is fixed rigidly to a support 44.
  • a needle board 46 is attached interchangeably to the support 44, on the face of the support 44 opposite the rod 38.
  • the board 46 carries the needles of pre needling 47 which extend towards the ply 41 parallel to the longitudinal axis 42 of the rod 38.
  • the sliding rod 38 is mounted to slide along its longitudinal axis 42 in a guide 39 itself pivotally supported in the frame 19 along an axis of oscillation 37 which is parallel to the width of the fiber web.
  • the axis 37 intersects the longitudinal axis 42 of the sliding rod 38.
  • the intersection of the axes 37 and 42 is in the middle of the axial length of the bore of the guide 39 in which the rod 38 slides.
  • the longitudinal axis 42 oscillates around the axis of oscillation 37 on either side of a general axis 43 passing through the intersection of the axes 37 and 42, and perpendicular at the plane of the path 1, to give the moving element 36 both a back and forth movement in a direction of penetration transverse to the plane of the path 1 of the ply 41, and a movement oscillating about the axis oscillation 37 secured to the frame 19.
  • the oscillation movement is intended to give the needles 47 a component of movement, called “advancement", essentially parallel to the direction 6 of advancement of the web.
  • a kinematic chain comprising a sliding which is mechanically in series with a hinge.
  • the sliding of the rod 38 in the guide 39 first, then the rotation of the guide 39 in the frame 19.
  • the kinematic chain in question means that there is between the needles and the frame of the machine a mechanical part, in this case the guide 39, which is guided in rotation with respect to one of the two elements, here the frame and guided in sliding relative to the other element, here the needles. Moreover, this kinematic chain has no actuation function.
  • the guide sliding surface of the guide 39 is located inside its cylindrical surface 40 of articulation on the frame.
  • the pre-needling installation 3 further comprises an actuating mechanism comprising in turn two eccentric shafts 48a, 48b rotatably supported by the frame 19 about axes 49a, 49b parallel to the axis of oscillation 37 and located symmetrically on either side of the general axis 43.
  • the actuating mechanism further comprises two connecting rods 51a, 51b whose head 52a, 52b is articulated to a respective eccentric journal 53a, 53b of the eccentric shafts 48a , 48b.
  • the foot 54a, 54b of each connecting rod 51a, 51b is articulated to the tilt-and-slide rod 38 along a respective positioning axis 56a, 56b.
  • the positioning axes 56a, 56b are adjacent to the distal end of the rod 38.
  • the guide 39 is located between the support 44 on the one hand and the positioning pins 56a, 56b on the other hand.
  • the arrangement is such that the two connecting rod legs 54a, 54b are directed obliquely towards each other away from the path 1 of the web.
  • the two positioning axes 56a, 56b are arranged symmetrically with respect to the axis 42 of the tilt-and-slide rod 38.
  • the positioning axes 56a and 56b are relatively very close to one another. This reduces the stresses on the rod 38, and thus allows to lighten it.
  • the eccentric radii 61a, 61b of the big-end axles have the same length, and the length of the connecting rods 51a, 51b between the big-end axle and the connecting rod foot axis is the same.
  • the two eccentric shafts 48a, 48b are driven in opposite direction of rotation and at equal rotation speed, as indicated by arrows 57a, 57b, for example by means of mutually meshing gears 58a, 58b (FIG. 1), each rotating jointly with the respective one of the shafts 48a, 48b.
  • the arrangement and the directions of rotation 57a, 57b are such that when the eccentric journals 53a, 53b perform the part of their stroke directed towards the plane of the path 1 of the web, the rods 51a, 51b work in traction and are substantially perpendicular to the plane of the web. They thus very effectively transmit their force for the penetration of the pre-needling needles 47 in the ply 41.
  • the connecting rods 51a, 51b are much more oblique, they work in compression and in a less favorable orientation, but the effort to be provided is less.
  • the distribution of the forces on a cycle is optimized, which makes it possible to lighten the mechanism, therefore the forces of inertia and the vibrations, which further increases the possible lightening.
  • the brake is tightened, the clutch is uncoupled and the shaft 48a is rotated for example by means of the drive motor until the desired phase shift is obtained. controlled by means of the angular encoder (s). Then we re-couple the clutch and release the brake.
  • the clutch discs have on their contact face teeth which are mutually engaged when the clutch is in the coupled state.
  • the angular pitch of these teeth is typically of the order of degree.
  • Adjusting the phase shift angle between the rays 61a and 61b makes it possible to adjust the length of the longitudinal component (parallel to the direction of travel of the ply 41) of the movement of the needles 47.
  • the adjustment device 59 is adjusted so that the eccentric shaft 48b located behind relative to the direction of advance 6 of the web is late compared to the tree 48a located in front.
  • the guiding and actuating means described make it possible to give the needles 47 as an "elliptical" trajectory an ovoid trajectory tapered towards the sheet.
  • the movement of the needles has an advancement component that accompanies the movement of advancement of the web on a proximal part of the penetration stroke which is greater than half of the total penetration stroke. This fraction of the penetration stroke constitutes the useful stroke along which the needles can be engaged in the web while accompanying its movement of advancement.
  • the pre-needling apparatus 3 further comprises a support means 62 for the ply 41 on the side opposite the needles 47, and a stripper 63 which defines the path of the ply 41 on the needle side 47.
  • the stripper 63 (see also FIG. 2) comprises a core 64 of generally flat shape and parallel to the plane of the path 1 (plane of the ply 41), and longitudinal lamellae 66 extending from the core 64 towards the path 1 of so that the free longitudinal edges of the slats 66 define the position of the face of the ply 41 facing the needles 47.
  • the core 64 has between the slats 66 longitudinal slots 67 through which the needles 47 to perforate the ply 41 In the example shown in FIG. 2, there are three slots 67 between two lamellae 66 neighbors.
  • the needles 47 are in the example shown arranged in rows parallel to the longitudinal direction of the web ( Figure 5). Each row occupies a slot 67. The length of each slot 67 is sufficient for the needles 47 to perform the longitudinal component (parallel to the direction of advance 6 of the web 1) of their movement.
  • the support means 62 comprises a rotary cylinder 68 having an axis 69 parallel to the width of the ply 41.
  • the cylinder 69 comprises a core 71 and annular lamellae 72 which protrude outwardly from the core 71.
  • Annular lamellae 72 extend in planes parallel to the direction of advancement of the ply 41 and support the ply 41 facing the needles 47 and the side of the ply 41 opposite the needles 47.
  • the slats 72 are facing slats 66 of the stripper 63.
  • the cylinder 68 is rotated in a manner to be specified later so that the free peripheral edges of the slats 72 contribute to the driving of the sheet 41 by frictional contact with the latter.
  • the slats 72 form between them recesses 73 (FIG. 2) which receive the tips of the needles 47 when they are in the position of maximum penetration through the ply 41.
  • the bottoms of the recesses 73 are formed by fingers 74 which, like the FIGS. 1, 4 and 5 extend beyond the lamellae 72 in the direction of the consolidation apparatus, until quasi-contact with the needling table 24, to define the corresponding side of the path of the sheet. between the zone of action of the needling needles 47 and the consolidation device by needling 2.
  • the core 71 of the cylinder 68 rotates inside a circular lumen 76 of each of the fingers 74. Upstream of the zone of action of the pre-needling needles 47 (FIG.
  • each finger 74 forms a boss 77 supporting the ply 41 substantially in the same plane as the most proximal point of the lamellae 72. Downstream of this boss 77, the fingers 74 are dug in 78 for m encircle the recesses 73 (FIG. 2) allowing the needles 47 to be deflected.
  • the stripper 63 On the side of the ply 41 facing the needles 47, the stripper 63 is extended on the one hand downstream to the stripper 26 of the needling apparatus 2, and on the other hand upstream by a part of engagement guide 79 (FIG. 5) profiled in the form of an engagement ramp.
  • An arrow 80 symbolizes that the stripper 63 is adjustable in height relative to the frame 19.
  • the arrows 81 symbolize a possibility of height adjustment of the support means comprising the cylinder 68 and the fingers 74. It can thus be adjusted firstly the distance between the stripper 63 and the support means 62, and secondly the depth of penetration of the needles 47 through the ply 41.
  • the introducer apparatus 4 comprises, just upstream of the pre-needling apparatus 3, two cylinders 82 situated on either side of the plane of the path 1, defining between them a niping slot for the ply 41 and controlled to turn into position. opposite direction of one another so as to cause the web in the direction of advance 6, by motor means not shown in Figure 1.
  • each cylinder 82 comprises a core 83 and a peripheral coating 84, for example rubber, which defines peripheral grooves 86 in which are housed non-rotating fingers 87 which extend towards the support means 62 and respectively the stripper 63.
  • the two sets of fingers 87 delimit between them the the path of the web between the rolls 82 and the pre-needling apparatus 3.
  • the pinch line formed between the rolls 82 receives the web from a converging belt conveyor system 88 upstream, sometimes called "booster compressor".
  • the consolidation apparatus 2 and the pre-needling apparatus 3 have the same punch rate.
  • This cadence identity is imposed by a toothed belt or chain 89 connecting the eccentric shaft 31 of the consolidation apparatus 2 with one of the eccentric shafts 48a of the pre-needling apparatus 3.
  • two solutions are presented for the belt, among which the lower half-view of the belt, designated 89, corresponds to the solution of Figure 1, that is to say, rate identity.
  • the angular setting of the eccentric shaft 31 of the consolidation apparatus 2 relative to that of the eccentric shafts 48a and 48b is such that when the needles 23 of the consolidation apparatus 2 are in the penetrating position maximum (FIG.
  • needles 47 for pre-needling are in the maximum retracted position, and conversely, as shown in Figure 4, when the needles 23 of the consolidation apparatus 2 are in the maximum withdrawal phase, the needles 47 of pre-needling are in the maximum penetration position. In this position, as we have seen, and as indicated by an arrow 91a in FIG. 4, the needles 47 also have a component of movement in the direction of advance of the ply and the withdrawal of the needles from consolidation 23 allows the sheet 41 to follow this movement.
  • the cylinders 8 of the extractor apparatus 7 and the cylinders 82 of the introducer apparatus 4 are controlled to rotate in the direction in which they convey the web in the advancing direction 6.
  • the penetration of the needles 23 tends to block the advancement movement of the web.
  • the cylinders 8 and 82 can be stopped or slowed down.
  • the pre-needling needles 47 in the retracted position perform their movement component towards the rear of the web as indicated by the arrow 91b.
  • the pre-needling needles 47 in the maximum penetration phase engage with the core of the fiber sheet and effectively propel the sheet directly into the consolidation apparatus 2 all by giving the web a start of cohesion which has the effect that the traction exerted by the extractor cylinders 8 is effectively transmitted to the entire part of the web situated between the pre-needling needles 47 and said cylinders 8.
  • the crew 36 performs its withdrawal movement, the axis 42 is inclined around the oscillation axis 37, relative to the general axis 43, so that the needles 47 are deported downstream.
  • the striking rate of the pre-needling apparatus 3 is equal to half that of the needling apparatus 2.
  • the tilt-and-slide rod 38 of FIG. 5 is replaced by a bent lever 138, a proximal end of which is fixed to the support 44, and whose bent part is articulated in a d-axis. oscillation 137 to an intermediate piece 92 secured to the sliding rod 17 of the consolidation apparatus 2.
  • the distal end of the lever 138 is articulated to a positioning pin 156 at the foot 93 of a connecting rod 94 whose head 96 is articulated to the eccentric trunnion 97 of an eccentric shaft 98 mounted in rotation relative to the frame 19 and driven to the same speed of rotation as the eccentric shaft 31 of the apparatus 2.
  • the eccentric radius 161b of the eccentric shaft 98 is delayed with respect to the eccentric radius 161a of the eccentric shaft 31, which actuates the axis of oscillation 137 via the connecting rod 127 and the rod 17.
  • the pre-needling apparatus 3 and the consolidation apparatus 2 are located on the same side of the path 1 of the web.
  • the needling apparatus 2 is located on one side of the path 1, in the example the upper side
  • the pre-needling apparatus 3 is located on the other side of the path 1, in the example the lower side.
  • this makes it possible, as in the example of FIG. 6, to bring the pre-needling needles 47 closer to the entry into the consolidation apparatus 2.
  • a programmable control 201 and bidirectional links 202, 203, 204 and 207 are schematised between this control 201 on the one hand, and a servomotor (not represented the eccentric shaft 31 of the needling apparatus 2, a servomotor (not shown) for driving one of the eccentric shafts 48a of the pre-needling apparatus 3, a servomotor (not shown) driving the cylinders 82 of the introducer apparatus 4, and a servomotor (not shown) for driving the cylinders 8 of the extractor apparatus 7.
  • the cylinder 68 can be driven by a servomotor connected by another bidirectional line to the programmable control 201, or be actuated via a transmission device from the servomotor actuating the cylinders 82 of the introducer apparatus 4. From In a manner known per se, such a structure is capable of managing at any moment the angular position of all the motor shafts which it thus controls as well as their respective speeds during each incremental period. See about it US-A-5,636,420 in the name of the plaintiff.
  • the control can be programmed by the user to define, before each particular production, the striking rates of the two apparatuses 2, 3, their mutual registration if the ratio of the rates is a rational number (resulting from the division of two whole numbers one by the other), the speed law of the introducer apparatus and that of the extractor apparatus.
  • the control 201 can also be programmed and then operate to perform other functions such as the settings 79 and 81 of Figure 5, using respective servomotors.
  • the command 201 can be part of a control unit managing other elements of the production line, or even the entire line, from the card at the beginning of the line until the winding at the end of the line.
  • FIG. 8 will only be described for its differences with respect to that of FIG. 7.
  • the table 124 and the stripper 126 of the needling apparatus 2 are extended upstream to constitute the stripper and the pre-needling table of the pre-needling apparatus 3.
  • the stripper 63 and the support means 62 of the pre-needling apparatus 3 of the preceding figures are deleted.
  • the introducer apparatus 4 opens directly between the two plates 123 and 126 which have, for the pre-needling needles 47, slits 167, 173 elongated parallel to the direction of advance 6 of the ply (not shown), to enable the needles 47 to execute the component of their movement which is parallel to the direction of advancement of the web.
  • the working zone of the pre-needling needles is brought closer to the maximum extent of the consolidation zone.
  • the means which guide the web between the pre-needling apparatus 3 and the consolidation apparatus 2 are perfectly continuous.
  • the drive of the pre-needling mechanism 3 can be connected by a mechanical transmission to the eccentric shaft 31 of the consolidation apparatus 2, so that the striking rates are in a given ratio; alternatively the two devices can be controlled by servomotors and a programmable control unit as described with reference to Figure 7.
  • the pre-needling mechanism of FIG. 8 could be replaced by a structure similar to that of FIG. 6. From the needling apparatus 2 and in particular from the rod 17, the intermediate piece 92 would be extended on either side of the webs to contribute to driving the positioning axis such as 156a ( Figure 6), this time located on the other side of the tablecloth.
  • An advantage over the embodiment of FIG. 6 would then be that the penetration phases of the pre-needling needles 47 correspond to the withdrawal phases of the needling needles 23, and vice versa.
  • the invention is not limited to the examples described and shown.
  • the solution of the programmable control 201 (FIG. 7) can be used in an architecture such as that of FIGS. 1 to 5 in which the belt 89 would then be suppressed or maintained.
  • the needling apparatus may comprise several modules, in particular at least one module on each side of the sheet, to needle the sheet from each of its two faces.
  • the support means for the ply on the opposite side to the pre-needling needles could be fixed instead of accompanying the advance movement of the ply. It could in particular comprise longitudinal strips that are fixed instead of rotating.
  • the invention is applicable when the consolidation is of a different type of mechanical needling. It may be, for example, needling with water jet, sewing, impregnation, heat or chemical treatment, etc.
  • the two positioning axes 56a and 56b could be merged.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP06290966A 2005-06-22 2006-06-14 Verfahren zum arbeiten ein Vliess mit einem Vernadelungmaschine und Maschine Withdrawn EP1736585A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0506303A FR2887565B1 (fr) 2005-06-22 2005-06-22 "procede pour ouvrer une nappe dans un appareillage de pre-aiguilletage, et installation mettant en oeuvre un tel procede"

Publications (1)

Publication Number Publication Date
EP1736585A1 true EP1736585A1 (de) 2006-12-27

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US (1) US20060288548A1 (de)
EP (1) EP1736585A1 (de)
CN (1) CN1891883A (de)
FR (1) FR2887565B1 (de)

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CN104141200A (zh) * 2014-07-17 2014-11-12 青岛铠硕纺机有限公司 一种无纺布针刺设备

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EP2265757B1 (de) * 2008-04-17 2019-06-26 Hi Tech Textile Holding GmbH Vorrichtung zum vernadeln einer faserbahn
US7845055B1 (en) 2009-10-29 2010-12-07 Mcneil-Ppc, Inc. Tampon formed from a selectively needled nonwoven fabric web
US9388518B2 (en) 2011-02-08 2016-07-12 Hi Tech Textile Holding Gmbh Method and device for strengthening a continuously fed material web
CN104911823A (zh) * 2014-03-13 2015-09-16 宜兴市宜泰碳纤维织造有限公司 一种双向喂料针刺机
DE102015119470A1 (de) * 2015-11-11 2017-05-11 Autefa Solutions Germany Gmbh Flor-Verfestigungsvorrichtung zum Verfestigen von Flor und Steuerungseinrichtung und Verfahren zum Betrieb von Antriebseinrichtungen der Flor-Verfestigungsvorrichtung
EP3412819B1 (de) * 2017-06-08 2019-12-25 Oskar Dilo Maschinenfabrik KG Nadelmaschine
CN107829220A (zh) * 2017-12-04 2018-03-23 常熟市振泰无纺机械有限公司 预针刺喂棉机
FR3126008A1 (fr) 2021-08-03 2023-02-10 Andritz Asselin-Thibeau Aiguilleteuse pour consolider un voile ou une nappe de fibres, notamment de non tissé, assemblage comportant un voile ou une nappe de fibres et une aiguilleteuse de ce genre et procédé pour faire fonctionner une aiguilleteuse ou un assemblage de ce genre

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FR2663961A1 (fr) * 1990-06-29 1992-01-03 Asselin Ets Procede d'aiguilletage et machine pour sa mise en óoeuvre, en particulier pour fibres minerales courtes.
US5636420A (en) * 1992-11-23 1997-06-10 Asselin Needling machine and needling method related thereto
US5873152A (en) * 1995-01-12 1999-02-23 Asselin Alternating actuation device and needling machine provided therewith
US5909883A (en) * 1995-01-12 1999-06-08 Asselin Needling machine and associated feed control method
FR2738846A1 (fr) * 1995-09-15 1997-03-21 Dilo Kg Maschf Oskar Dispositif d'entrainement des barres d'aiguilles d'une aiguilleteuse pour le traitement d'une nappe de feutre non tisse
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CN1891883A (zh) 2007-01-10
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FR2887565B1 (fr) 2007-08-24

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