EP3455397A1 - Card comprising a flange system that reduces the build-up of fibres - Google Patents

Card comprising a flange system that reduces the build-up of fibres

Info

Publication number
EP3455397A1
EP3455397A1 EP17727290.3A EP17727290A EP3455397A1 EP 3455397 A1 EP3455397 A1 EP 3455397A1 EP 17727290 A EP17727290 A EP 17727290A EP 3455397 A1 EP3455397 A1 EP 3455397A1
Authority
EP
European Patent Office
Prior art keywords
carding
flange
cylinder
air
roller
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Withdrawn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
EP17727290.3A
Other languages
German (de)
French (fr)
Inventor
Xavier Catry
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.)
Fives DMS SA
Original Assignee
Fives DMS SA
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 Fives DMS SA filed Critical Fives DMS SA
Publication of EP3455397A1 publication Critical patent/EP3455397A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/76—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area
    • D01G15/82—Arrangements for confining or removing dust, fly or the like
    • D01G15/825—Arrangements for confining or removing dust, fly or the like by suction or blowing

Definitions

  • the invention relates to a method for reducing the accumulation of fibers in the side portions of a rotating roll of a card, and to a card which is suitable for carrying out such a method.
  • the field of the invention is that of the textile industry, namely cardes used to disentangle and aerate textile fibers from a raw fiber mat.
  • a card conventionally comprises a plurality of so-called carrier drums (hereinafter referred to as cylinders), of which at least one carding drum on the periphery of which carding members are mounted.
  • the fiber mat is introduced at the entrance of the card, the individualized fibers under the combined actions of the rotating card cylinder liners and carding members.
  • the invention relates more particularly to a card whose carding members comprise at least one or more rollers, rotatably mounted at the periphery of the carding cylinder.
  • the invention is concerned here with the problem of accumulation of fibers in the cards.
  • EP 1 612 304 A1 and in order to prevent the fibers from falling to the ground from the peripheral wall of the cylinder, it is conventional for the skilled person to mount:
  • a fairing (fixed relative to the frame), in the immediate vicinity of the cylinder, extending in length over the entire length of the cylinder carding,
  • EP 1 612 304 A1 provides a solution to this problem, mainly in:
  • a first problem originates at the level of the sealing zone between the lateral chamber and the curved fairing, an area for example illustrated in the detail view of FIG. 2 of EP 1 612 304 A1.
  • the sealing between the side flange and the fairing ie the seal marked 10
  • the local air flow of the leak in this sealing zone escaping from the lateral chamber is not determined in that it constitutes an uncontrollable part of the flow of air.
  • a second problem has its origin when two consecutive cylinders implement the method according to document EP 1 612 304 A1.
  • this active barrier can be implemented not only at the ends of the large drum (ie the carding cylinder marked 5), but also at the ends of the front train (ie the carding cylinder marked 2), and at the ends of the cylinder marked 4 ensuring the transfer of the textile web from the front train to the large drum.
  • the lining of the transfer cylinder marked 4 takes up the textile ply of the front-end cylinder marked 2, at a first zone of recovery between these two cylinders, the lining of the large drum spotted 5 taking up the textile web of the cylinder. transfer identified 4, at a second recovery zone, distant from the first.
  • the air escaping radially at the periphery of the lateral chamber associated with the transfer cylinder marked 4 is, at each recovery zone, in immediate conflict with the air escaping radially at the periphery of the lateral chamber; associated with the carding cylinder (of the marked front end 2, or the large drum marked 4): concretely and except to be able to perfectly balance the pressures of these two leaks, one takes over the other and generates a suction of air in the lateral chamber of lower pressure locally, at this area of recovery,
  • each zone of recovery between two cylinders is moreover an area where the cylinders are intimately close to their periphery, which causes a crushing of the air boundary layer: this crushing generates lateral air flows directed towards the ends of the cylinder: textile fibers are thus driven by these lateral air flows towards the side parts to the rolls, these fibers then being sucked into the side chamber of lower pressure.
  • each scanner roller is equipped with a flange marked F ', fixed, defining with the roller a side chamber E'.
  • this flange marked F ' comprises a central portion in the form of a disc, extending generally parallel to the side face of the cylinder, and, notably, an outer rim, marked 19b, of diameter slightly greater than the end of the roll, capping the end of the roll on a short axial distance.
  • the internal diameter of the fixed flange abuts on a bearing ensuring the rotational guidance of the roller relative to the frame.
  • this roll-side chamber is pressurized by air passing from the side chamber of the adjacent carding cylinder.
  • a side wall conventionally extends the disk of the flange, in particular at its upper part, and so as to laterally close the space under the hood of the card which covers all the cylinders and rollers.
  • the zone defined between this side wall and the marked rim 19b forms a nook, conducive to fouling, on which the textile fibers are deposited during operation, without ever being evacuated.
  • the present application aims to answer all or part of these three problems identified above.
  • Document CN 101 509 158 A also discloses a carding roll whose shaft is rotatably mounted in a support via a bearing.
  • this support comprises two parts 2, 21.
  • the first part 2 covers the bearing at a first end and partially overlaps a lateral face of the roll 1 at its other end. by being housed in a piercing of the lateral face.
  • a compressed air supply chamber 7, 8, 13 is formed inside the two parts 2, 21 of the support comprising a plurality of sections 7, 8, 13 and extends from one end of the second part 21 of the support comprising a supply connection 51 in compressed air until the bore formed in the side face of the roll 1.
  • the air which is supplied at the supply connection 51 firstly traverses the annular cavity 7, then the longitudinal chamber 8 around the shaft 11 and finally the chamber 13 formed between the lateral face of the roll 1 and the end of the first portion of the support 2, before being expelled towards an outer face of the first portion 2 of the support in an axial direction (relative to the shaft 11), in order to expel the fibers that could to be accumulated during the carding process.
  • Such a device has several disadvantages.
  • the length of the path that will have to travel the air from the supply connection 51 to its expulsion at the outlet of the chamber 13, is important, which increases the pressure losses along the path, and requires supplying compressed air at the supply connection 51 with a very high flow rate and pressure so that the flow rate and the pressure of the air expelled at the outlet of the chamber 13 are satisfactory, which is complex and requires employ expensive solutions for the supply of compressed air, for example by the use of a compressor, especially if several devices must be fed by the same compressed air supply means, for example a compressor.
  • the invention therefore also proposes to overcome these various disadvantages.
  • document JP 06051276 U discloses a carding roll comprising a shaft rotatably mounted in a support.
  • a first feed chamber is formed between two flanges arranged around the shaft 11.
  • a first flange is disposed inside the carding roller 7 and a second flange 12 is arranged so as to cover the lateral face of the carding roll 7 and extends beyond the carding roll 7.
  • the second flange 12 forms a feed channel around the portion of the shaft 11 projecting beyond of the carding roll 7, communicating with the first feed chamber.
  • the supply channel can be supplied with compressed air, and the air passes through this supply channel and enters the feed chamber before being expelled at a slot formed between the outer wall of the carding roller. and a shoulder formed on the second flange 12.
  • a partition 8 is fixed on the second flange 12 and the air expelled at the slot at the outlet of the feed chamber will expel the fibers that may have accumulated between the partition 8 and a face of an upper roller cooperating with the carding roll 7.
  • Such a device has several disadvantages.
  • the direction in which the air is expelled at the slot is not necessarily radial (in the direction of the shaft 11) and the fibers that may have accumulated in the area between the top roll and the partition 8 at an outer face of the second flange 12 will not be expelled optimally.
  • the length of the path that will have to travel the air from the supply channel until expulsion at the slot is important, which increases the pressure losses along the path, and requires to provide compressed air with a very high flow rate and pressure so that the flow and the pressure of the air expelled at the slot are satisfactory, which is complex and requires the use of expensive solutions for the air supply compressed, for example by the use of a compressor, especially if several devices must be powered by the same means for supplying compressed air, for example a compressor.
  • the fibers will accumulate on a substantially horizontal flange of the second flange 12, perpendicular to the partition 8 and the expelled air will undergo disturbances in this area because of the orthogonality between the flange of the second flange 12 and septum 8, which does not allow to properly expel the fibers that may have accumulated in this area.
  • the invention therefore also proposes to overcome these various disadvantages.
  • the invention relates first of all to a card comprising a carding cylinder and at least one carding roller mounted on the periphery of the carding cylinder, the support shaft of the carding roller being rotatably mounted on the frame by means of bearings.
  • a card comprising a carding cylinder and at least one carding roller mounted on the periphery of the carding cylinder, the support shaft of the carding roller being rotatably mounted on the frame by means of bearings.
  • On both sides of the carding roll having at least two side plate systems, mounted fixed on either side of the carding roll, each covering the lateral face of the carding roll, each traversed by the support shaft, connecting each said bearing at the periphery of the carding roller, each flange system comprising:
  • a nozzle system suitable for blowing the fixed peripheral zone of said flange system, at least at its upper part, from the air of said cavity.
  • the flange system has two circular elements, assembled to one another, including a first flange element covering the lateral face of the roller, and a second bearing element whose internal diameter cooperates directly or not with the bearing, said cavity supplied with air being materialized at least in part by a groove of said second support element opening laterally to said second support element, partially closed by the inner surface of the first flange element, opposite on the outer face of the first member facing the roll, and so that the nozzle system results from a slit of the flange system defined by a peripheral gap between said first flange member and said second support member.
  • the cavity is an annular chamber extending at least partly around the axis of the carding roller;
  • the nozzle system has a peripheral slot extending and continuously opening into said annular cavity, providing an air blast on the periphery of said flange system, without blowing discontinuity, at least along the active portion of the annular cavity;
  • the card has a closure member partially housed in said annular cavity on an angular fraction of said annular cavity, centered on the zone interface between the carding cylinder and the carding roll, so as to prevent a direct blow from said nozzle system to the carding roll in a radial direction to said carding roll;
  • said external means for supplying air to said annular cavity directly feeds the annular cavity into a zone of the cavity remote from the interface zone between the roll and the roll, such as, for example, diametrically opposite said zone;
  • said external means for supplying air to said annular cavity comprises a screw-needle type flow control member suitable for adjusting the flow rate of air entering said cavity
  • the carding roll has a cylindrical end, at the periphery of the roll, projecting laterally from the lateral face of said roll, which caps a disc of the flange system, the disc and the cylindrical end being sealingly mounted by virtue of a circular sealing performed between the outer diameter of the disk of the flange system, on the one hand, and the inner diameter of the cylindrical end, on the other hand;
  • the card has at least one nozzle and means for supplying air to said nozzle, said nozzle being blown in an axial direction, locally at the interface zone between the carding cylinder and said carding roller;
  • the flange system is extended by a fixed side wall, closing the housing laterally, extending to the housing cover;
  • the peripheral gap between the first flange element and the second support element defining the slot of the nozzle system is inclined towards the fixed side wall relative to the vertical by an angle between 2 ° and 45 ° the second support member being shaped so that the nozzle system licks the fixed side wall;
  • the flange system comprises a peripheral groove, receiving in nesting an edge of the fixed side wall.
  • the card comprises:
  • At least one fairing arranged fixed in the lower part of the carding cylinder, said fairing extending axially over the entire length of the carding cylinder, the inner wall of the fairing being arranged in the immediate vicinity of said carding cylinder, taking up the curvature of the cylinder on an angular fraction of the cylinder, defining an interspace extending in length along an arc of a circle in a plane perpendicular to the carding cylinder,
  • a blowing system of the inter-space zone comprising:
  • a second lateral flange perpendicular to the longitudinal axis of the cylinder and the fairing, closing laterally said inter-space between the fairing and the carding cylinder, comprising a through slot, facing said inter-space,
  • Means for supplying the air distribution chamber with air comprising a flow control means supplying said air distribution chamber.
  • the invention also relates to a method for reducing the accumulation of fibers in the lateral parts of a rotary roller of a card according to the invention, in which the cavity of each flange system is supplied with air so as to implement radial blowing, at least on the fixed peripheral upper part of the flange system.
  • the method is implemented in a card having said at least one nozzle, and in which air is supplied two nozzles located at both ends of the interface zone, each blowing in an axial direction, locally at the interface area between the carding cylinder and said carding roller.
  • the method is implemented in a card according to the invention comprising said at least one blowing system of the inter-space zone, in which two blowing systems of the zone d are air fed. inter-space so as to generate a localized blow at the inter-space zone between the carding cylinder and the fairing, at the two longitudinal ends of said inter-space.
  • FIG. 1 is a partial sectional view of a card according to the state of the art, illustrating in detail the fixed lateral flange connecting, on the one hand, a support bearing of the rotation shaft of the roller, and on the other hand, the periphery of the roll and according to a known arrangement of the state of the art mentioned in the introduction: this view more particularly illustrates the third problem identified by the inventor in this state of the art, namely an accumulation fibers on the corner formed between, on the one hand, the flange of the flange capping the roller, and a vertical wall extending the flange, on the other.
  • FIG. 2 is a partial sectional view of a card according to the invention, illustrating in detail the fixed lateral flange system connecting, on the one hand, the support bearing of the rotation shaft of the roller, and on the other hand on the other hand, the periphery of the roll, the design of which advantageously allows the implementation of a blow-molding at the corner formed between the periphery of the flange system and the side wall, and so as to solve the problem of accumulation of fibers by this corner,
  • FIG. 3 is a partial sectional view according to FIG. 2, also illustrating in detail, on the one hand, in the upper part of the flange system the presence of a screw-needle-type flow control device allowing adjusting the air flow at the inlet of the annular cavity of the flange system, and secondly, in the lower part the presence of a closure member partially housed in said annular cavity on an angular fraction of said annular cavity of so as to prevent a direct blow from said nozzle system to the carding cylinder, but also, the presence of a nozzle, separate from the flange system, coming to blow in an axial direction, locally at the interface zone between the carding cylinder and said carding roll,
  • FIG. 4 is a perspective view diagrammatically illustrating, on the one hand, the radial flows generated by the flange system, constituting an active barrier against depositing fibers on the periphery of the system, and on the other hand, the axial flow of the nozzle constituting an active barrier at the end of the interface zone between the carding roll and the carding roll,
  • FIG. 5a is a partial sectional view of a card according to the state of the art, according to a sectional plane passing through the axis of rotation of the cylinder, illustrating more particularly the lateral chamber placed under pressure delimited between the face side of the carding cylinder (rotary element), on the one hand, and the lateral flange and the fairing (fixed elements), on the other hand, which is sealed at the junction between the fairing and the lateral flange: this view further illustrates the creation of an axial leak flow at the interface zone between the shroud and the cylinder whose flow is not determined in that it constitutes an uncontrollable part of the total air flow supplying the lateral chamber, this view has the object (in combination with FIG. 5b) of illustrating the first problem identified by the inventor,
  • FIG. 5b is a view of the card of FIG. 5, in a section plane perpendicular to the axis of the cylinder, this view more particularly illustrating the first fouling problem identified by the inventor in this state of the art. , ie (and when this axial flow is uncontrolled) the birth of peripheral flows along the gap between the fairing and the cylinder, which emerge from the longitudinal edges of the fairing by driving fibers,
  • FIG. 6 is a side view illustrating a carding cylinder, and the presence of a fairing, the presence of a flange at the end of the fairing being omitted,
  • FIG. 7 is a view according to FIG. 6 illustrating this flange, said second lateral flange, belonging to the blowing system of the interface zone between the fairing and the cylinder,
  • FIG. 8 is a view opposite to FIG. 7, particularly illustrating the presence of a blowing slot facing said inter-space, extending in length along the periphery of the cylinder by taking up the curvature of the cylinder,
  • FIG. 9 is a view along a section plane simultaneously traversing the cylinder, the shroud and the blowing system of the interface zone, this view more particularly illustrating an air distribution chamber of the blowing system communicating with said slot and a flow control member for controlling air flow supplying said air distribution chamber
  • FIG. 10 is a partial sectional view of a card according to the state of the art, illustrating the second fouling problem identified by the inventor, at the level of the zone of recovery between two pressure cylinders, when the lateral chamber of a cylinder is not pressure-balanced with the lateral chamber of the adjacent cylinder at this recovery zone, namely the suction of textile fibers in the chamber of locally lower pressure at this zone of recovery,
  • FIG. 11 is a view of a card configuration according to the invention, by way of exemplary embodiment.
  • a card for the production of nonwoven, or for example semi-combed This card 1 comprises as input a feed trough (not shown), a food roll 3c and a breaker cylinder 21.
  • the breaker cylinder 21 feeds the marked carding cylinder 2a, usually called pre-train cylinder.
  • Several successive carding assemblies are provided at the periphery of the cylinder 2a, each assembly comprising a brush roll 3a followed by a worker roll 3b.
  • a transfer cylinder 2b takes up the fibers of the carding cylinder 2a and transfers them to a second carding cylinder 2c.
  • This second carding cylinder 2c usually called large drum, comprises, like the first carding cylinder 2c, a plurality of successive carding assemblies, each set comprising a brush roll 3a followed by a worker roller 3b.
  • the combined actions of the rotary carding cylinder liners and carding assemblies allow to individualize the fibers of the fiber mat introduced at the entrance.
  • Two card outlets each include a 2d or 2f doffer roll, a 3d peeler roll, and a conveyor belt (not shown).
  • the invention is primarily concerned with the resolution of the third problem identified by the inventor, namely an accumulation of fibers Ac 'on the nook formed between, on the one hand, the rim 19b' of the flange F 'styling the roller which can be a sweeping roller or a worker roller, and a vertical wall extending the flange, on the other hand.
  • This problem is shown in Figure 1 which illustrates a state of the art mentioned in the introduction.
  • the roller which can be a scanning roll 3a 'or worker 3b', the fixed flange F ', substantially parallel to the lateral face of the roll and forming the lateral chamber E' which, depending on the the technique disclosed in Figure 5 of EP 1 612 304 is supplied with air and thus pressurized.
  • the disc of the flange is still recognizable, substantially parallel to the lateral face of the roll and the marked flange 19b ', which extends in length in an axial direction to cover the roll. It is noted that this rim 19b ', fixed, forms with a fixed vertical wall juxtaposed a corner promoting fouling where a build-up Ac' of fibers.
  • the invention relates to a card 1 comprising a carding cylinder 2 and at least one carding roll 3 mounted on the periphery of the carding cylinder 2.
  • the support shaft 30 of the carding roll 3 is rotatably mounted on the frame by the intermediate bearings 4, on both sides of the carding roller 3.
  • the card comprises at least two lateral flange systems 5, fixedly mounted on either side of the carding roller 3, each covering the lateral face of the carding roll, each traversed by the support shaft 30, each connecting said bearing 4 to the periphery of the carding roller 3.
  • Each flange system 5 comprises:
  • a nozzle system 52 suitable for blowing the fixed peripheral zone of said flange system, at least at its upper part, from the air of said cavity.
  • the invention arose from the finding by the inventor that the peripheral surface of the flange system 5 forms, with a side vertical wall marked 8, a fixed corner area, favorable to the deposition of textile fibers.
  • the flange system 5 can result from the assembly of two circular elements, assembled to one another, including a first flange element 54. covering the lateral face of the roll 3, and a second bearing element 55 whose inner diameter cooperates directly (or not) with the bearing 4.
  • Said cavity 50 supplied with air may be embodied at least in part by a circular groove of said second bearing element 55 opening laterally to said second bearing element 55.
  • This groove is partially closed by the internal surface of the first flange element 54, opposite to the outer face of the first element 54, namely the side facing the roller 3.
  • the nozzle system 52 then results from a slit of the flange system 5 defined by a peripheral gap between said first flange element 54 and said second support element 55 defined by the walls between these two elements.
  • the carding roll 3 which may be a sweeping roll 3a or a worker roll 3b, is recognized, the support shaft 30 extending longitudinally on both sides. other support, guided on both sides of the roller by bearings 4.
  • Each bearing 4 comprises an inner ring secured to rotate with the shaft and an outer ring, fixed, integral with the frame which are guided in rotation one of relative to the other, particularly by means of bearings.
  • the flange system 5 fixedly mounted on the lateral side of the lateral surface of the carding roller, each traversed by the support shaft 30, each connecting said bearing 4 to the periphery of the carding roller 3, is also recognizable.
  • This flange system 5 forms with the lateral side of the roller, a preferably sealed chamber protecting this inter-space of the fiber entries, a rotating type seal, circular, which can be provided between the flange system, fixed, and the roller 3, rotatable.
  • such a flange system 5 makes it possible to implement a radial blowing at least on the upper part of the flange from the inside to the outside, and for the purpose of prohibit the accumulation of fibers in this nook zone.
  • the blowing implemented may be continuous in time or not, for example performed periodically.
  • the fibers discharged by the blowing implemented by the flange system can be taken in a forced air stream generated between the hood and the rolls / rolls of the card, and known as such.
  • a forced air stream generated between the hood and the rolls / rolls of the card, and known as such.
  • Such a current is represented in FIG. 11 by arrows, one or more suction hoods 101, 102, 103 of the hood provided with ventilation means for generating a suction flow from bottom to top.
  • the cavity 50 may be an annular chamber extending at least partly around the axis of the carding roller 3.
  • the nozzle system 52 may have a peripheral slot extending and continuously opening into said annular cavity 50, ensuring blowing air on the periphery of said flange system, without blowing discontinuity, at least along the active portion of the annular cavity 50.
  • the nozzle system may comprise several distinct nozzle openings, distributed at the periphery of the system each nozzle opening communicating with said annular cavity.
  • a shutter member 53 may be partially housed in said annular cavity 50 on an angular fraction of said annular cavity, preferably centered on the interface zone Zrc between the carding cylinder 2 and the carding roll 3.
  • This closure member 53 then prohibits a direct blowing of said nozzle system 52 to the carding cylinder 3, namely in a radial direction to said carding cylinder 3.
  • the portion of the cavity 50 housing the closure member 53 is then rendered inactive.
  • said external means 51 for supplying air to said annular cavity directly feed the annular cavity 50 into an area of the cavity remote from the interface zone Zrc between the roll and the roll, such as for example diametrically opposed to said zone as shown for reference in FIG. 3.
  • Said external means 51 for supplying air to said annular cavity 50 may comprise a flow-rate adjusting member 57 of the screw-needle type suitable for regulating the flow of air coming in. in said cavity 50.
  • each flange system 5 has such an individual flow control means 57.
  • the carding roll 3 has a cylindrical end 31, peripherally of the roll, projecting laterally from the side face of said roll, capping a disk of the flange system. 5.
  • the disc D and the cylindrical end 31 can be mounted sealingly by means of a circular seal 6, of the rotary joint type formed between the outer diameter of the disk D, on the one hand, and the internal diameter of the cylindrical end 31 of the roller 3, on the other hand.
  • the roller 3 is to cap the flange system 5 for sealing the roll / flange system, and unlike the state of the art illustrated in Figure 1 or on the contrary the flange with its flange 19b which covers the roll, maximizing the fixed surface on which the accumulations of fibers can be deposited.
  • the flange system 5 may comprise a peripheral groove 56, receiving in engagement a circular edge of the fixed side wall 8.
  • This side wall 8 extends the flange system 5 extending to the hood of the housing closing the housing laterally.
  • This side wall may be transparent, and constitute a control window.
  • the peripheral gap between the first flange element 54 and the second support element 55 defining the slot of the nozzle system 52 may be inclined towards the fixed lateral wall 8 with respect to the vertical of an angle of between 2 ° and 45 °, the second support element 55 being shaped so that the nozzle system 52 licks the fixed side wall 8.
  • the second support element 55 can thus be shaped so that the nozzle system 52 is directly in the extension of the fixed lateral wall 8 without a substantially horizontal rim being formed. by the second support member 55 in the area at which fibers would accumulate near the fixed side wall 8.
  • the peripheral gap between the first flange element 54 and the second support element 55 being inclined relative to the vertical by an angle of between 2 ° and 45 °, in particular 30 °, to blow the air.
  • the air at the periphery of the carding roll 3 in a substantially radial direction combined with the absence of a substantially horizontal edge in the area at which the fibers would accumulate near the fixed side wall 8 makes it possible to obtain an evacuation. all the fibers that would accumulate near the fixed side wall 8.
  • the card may further comprise a nozzle 7 and means 70 for supplying air to said nozzle, said nozzle 7 blowing in an axial direction, that is to say parallel to the cylinder, locally at the interface zone Zrc between the carding cylinder 2 and said carding roll 3.
  • Such a nozzle 7 is distinct from the flange system 5: it is positioned laterally to the roller (and to the cylinder) so that its air flow is directed axially at the interface zone Zrc.
  • This controlled flow rate is an active barrier which prevents the fibers from escaping from this interface laterally.
  • the air flow of this nozzle 7 can be controlled by means of flow control means 70, such as a needle screw. This is a means of individual adjustment.
  • This nozzle 7 can be located on the other side of the side wall 8 with respect to the cylinder and the roller: the flow of the nozzle passes through an orifice 80 of the side wall before reaching the interface zone Zrc.
  • the card may also comprise for each carding cylinder a fixed lateral flange Fcyl, covering the lateral face of the carding cylinder 2 sealingly cooperating with the peripheral cylindrical end of said carding cylinder 2.
  • the lateral chamber formed between the lateral face of a carding cylinder 2 and the fixed flange Fcyl is preferably not supplied with air. This makes it possible to avoid the second problem mentioned in the introduction illustrated in FIG. 10 when two consecutive cylinders implement the method according to document EP 1 612 304 A1.
  • FIG. 10 is a partial sectional view of a card in a plane passing through the axes of rotation of two consecutive rolls of the card, such as the transfer cylinder and the cylinder of the large drum.
  • a lateral chamber E “or E” ' is formed between the lateral face of the cylinder and a fixed lateral flange, and this chamber E “or E” is supplied with power. in air.
  • each zone of recovery between two cylinders is an area where the cylinders are intimately close to their periphery, which causes a crushing of the air boundary layer: this crushing generates side air flows (illustrated by the double arrow of Figure 10) directed towards the ends of the cylinder: textile fibers are thus driven by these lateral air flows towards the side parts to the rolls, these fibers then being sucked into the side chamber locally lower pressure.
  • the card according to the invention may comprise:
  • At least one blowing system 10 of the inter-space zone Zcc comprising:
  • a second lateral flange Fcar perpendicular to the longitudinal axis of the cylinder and the fairing, laterally closing said inter-space Zcc between the fairing 9 and the carding cylinder 2, comprising a through slot 11 opposite said inter-space Zcc - an air distribution chamber 12 on the back of the second flange Fcar, communicating with said through slot 11, - means 13 for supplying the air distribution chamber with air comprising a flow control means supplying said air distribution chamber 12.
  • Such a blowing system 10 makes it possible to generate an intensity blast such as to prohibit the transfer of fibers from the inter-space Zcc to the side portions of the cylinder, while avoiding an overcurrent of blowing.
  • two blowing systems are provided at the two longitudinal ends of the fairing, and so as to block the fibers at the two longitudinal ends of the inter-space Zcc. This avoids the first problem identified by the inventor, shown in Figures 5a and 5b.
  • FIG. 5a shows the lateral chamber marked E “delimited between, on the one hand, the lateral face of the cylinder, and the lateral flange F 'and the fairing C (fixed elements), on the other hand, which is watertight at the junction between the fairing C and the side flange F ', for example by using a seal marked J'
  • This side chamber E is put under overpressure by a source of air outside the chamber which creates an air flow FI ', rising axially at the inter-space between the fairing and the cylinder.
  • the local air flow of the flow FI 'in this sealing zone escaping from the lateral chamber E " is not determined in that it consists of an uncontrolled part the total air flow supplying the lateral chamber E ": very often this flow FI 'is too important in this sealing zone: the pressure losses being greater in the axial direction of the cylinder along the inter-space this flow of air tends to emerge through the longitudinal edges of the fairing, and as illustrated by the marked flow F2 'and F3' of Figure 5b, bringing with it textile fibers that will fall to the ground.
  • the blowing system 10 of the inter-space zone Zcc makes it possible to avoid such an overcurrent of blowing, in that the slot 11 of the second flange Fcar is located only at the right of this inter-space zone Zcc, at the level of the longitudinal end of the fairing 9, and in that the flow of air passing through this slot 11 can be precisely controlled by the flow control means of the screw-needle type or equivalent system.
  • blowing system 10 of the inter-space zone Zcc between the cylinder and the fairing corresponding to the first problem identified by the inventor is independent of the flange system, identified 5, which allows him to solve the third problem identified by the inventor.
  • the applicant reserves the right to file a divisional application for this invention not claimed as such and which relates to a card 1 comprising a carding cylinder 2 and carding members mounted at the periphery of the carding cylinder,
  • said card comprising:
  • At least one first fixed lateral flange Fcyl covering the lateral face of the carding cylinder 2 sealingly cooperating with the peripheral cylindrical end of said carding cylinder 2,
  • At least one blowing system 10 of the inter-space zone Zcc comprising:
  • a second lateral flange Fcar perpendicular to the longitudinal axis of the cylinder and the fairing, laterally closing said inter-space Zcc between the fairing 9 and the carding cylinder 2, comprising a through slot 11 opposite said inter-space Zcc ,
  • the second flange Fcar is preferably located in the extension of the first flange Fcy.
  • two blowing systems are provided at the two longitudinal ends of the fairing, and so as to block the fibers at the two longitudinal ends of the inter-space Zcc.
  • Cylinder card (including first carding cylinder 2a or second carding cylinder 2c),
  • Rolling card in particular roller brush 3a or roller worker 3b
  • Air supply means (nozzle 7),
  • Fairing in particular fairing 9a or 9b
  • Second lateral flange integral with the end of the fairing, laterally closing the interface zone between the fairing and the peripheral wall of the cylinder,
  • roller sweeper or worker roller

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

Abstract

The invention relates to a card (1) comprising a carding cylinder (2) and at least one carding roller (3) mounted on the periphery of the carding cylinder (2), the support shaft (30) of the carding roller (3) being rotatably mounted on the frame by means of bearings (4) at each end of the carding roller (3). The card also includes at least two end flange systems (5) mounted fixed at each end of the carding roller (3), with the support shaft (30) extending through each flange. Each flange covers the end face of the carding roller and connects the bearing (4) to the periphery of the carding roller (3). According to the invention, each flange system (5) comprises: a cavity (50) inside the flange system; external means for supplying air to the cavity; a nozzle system (52) for blowing air from the cavity onto the fixed peripheral area of the flange system, at least in the upper part thereof; as well as two circular elements assembled to one another, including a first flange element (54) covering the end face of the roller (3), and a second bearing element (55), the inside diameter of which engages directly (or not) with the bearing (4). The aforementioned air-supplied cavity (50) at least partially takes the form of a groove in the second bearing element (55) that opens at the side of the second bearing element (55) and is closed partially by the inner surface of the first flange element (54), opposite the outer face of the first element (54) facing the roller (3). The nozzle system (52) is formed by a slit in the flange system (5), defined by a peripheral gap between the first flange element (54) and the second bearing element (55).

Description

CARDE EQUIPEE D'UN SYSTEME DE FLASQUES REDUISANT LES  CARD EQUIPPED WITH A SYSTEM OF FLASKS REDUCING
ACCUMULATIONS DE FIBRES  FIBER ACCUMULATION
L'invention concerne un procédé pour réduire l'accumulation de fibres dans les parties latérales d'un rouleau rotatif d'une carde, ainsi qu'une carde convenant pour la mise en œuvre d'un tel procédé. The invention relates to a method for reducing the accumulation of fibers in the side portions of a rotating roll of a card, and to a card which is suitable for carrying out such a method.
Le domaine de l'invention est celui de l'industrie textile, à savoir des cardes utilisées pour démêler et aérer les fibres textiles à partir d'un matelas de fibre brute. The field of the invention is that of the textile industry, namely cardes used to disentangle and aerate textile fibers from a raw fiber mat.
Une carde comprend classiquement une pluralité de tambours dit porteurs (ci-après désignés cylindres) dont au moins un tambour de cardage à la périphérie duquel sont montés des organes cardants. Le matelas de fibres est introduit à l'entrée de la carde, les fibres individualisées sous les actions combinées des garnitures du cylindre rotatif de carde et des organes cardants. A card conventionally comprises a plurality of so-called carrier drums (hereinafter referred to as cylinders), of which at least one carding drum on the periphery of which carding members are mounted. The fiber mat is introduced at the entrance of the card, the individualized fibers under the combined actions of the rotating card cylinder liners and carding members.
L'invention concerne ici plus particulièrement une carde dont les organes cardants comportent au moins un ou plusieurs rouleaux, montés rotatifs à la périphérie du cylindre de cardage. The invention relates more particularly to a card whose carding members comprise at least one or more rollers, rotatably mounted at the periphery of the carding cylinder.
L'invention s'intéresse ici au problème d'accumulation de fibres dans les cardes. Tel que mentionné dans le document EP 1 612 304 Al, et dans le but d'éviter que les fibres tombent au sol à partir de la paroi périphérique du cylindre, il est classique pour l'homme du métier de monter : The invention is concerned here with the problem of accumulation of fibers in the cards. As mentioned in EP 1 612 304 A1, and in order to prevent the fibers from falling to the ground from the peripheral wall of the cylinder, it is conventional for the skilled person to mount:
- en partie inférieure du cylindre, un carénage (fixe par rapport au bâti), à proximité immédiate du cylindre, s 'étendant en longueur sur toute la longueur du cylindre cardage, - In the lower part of the cylinder, a fairing (fixed relative to the frame), in the immediate vicinity of the cylinder, extending in length over the entire length of the cylinder carding,
- un flasque latéral (fixe), à chaque extrémité du cylindre. - a side flange (fixed) at each end of the cylinder.
Comme mentionné dans le document EP 1 612 304 Al, en cours de fonctionnement, les fibres présentes à la périphérie du cylindre ont tendance à être chassées latéralement vers l'extérieur, et à s'accumuler au niveau des extrémités (parties latérales) des cylindres de la carde. Périodiquement, la production doit être interrompue afin de nettoyer la carde des agglomérations de fibres. Le document EP 1 612 304 Al apporte une solution à ce problème, principalement en :As mentioned in the document EP 1 612 304 A1, during operation, the fibers present at the periphery of the cylinder tend to be driven laterally outwards, and accumulate at the ends (side portions) of the cylinders. of the card. Periodically, the production must be interrupted in order to clean the card of fiber agglomerations. EP 1 612 304 A1 provides a solution to this problem, mainly in:
- créant une chambre latérale repérée E, délimitée entre chaque face latérale du cylindre de cardage (élément rotatif), d'une part, et le flasque latéral et le carénage (éléments fixes), d'autre part, qui est étanche au niveau de la jonction entre le carénage et le flasque latéral, par exemple grâce à l'utilisation d'un joint d'étanchéité repéré 10 et illustré à la figure 2 du document EP 1 612 304, creating a lateral chamber marked E delimited between each lateral face of the carding cylinder (rotating element), on the one hand, and the lateral flange and the fairing (fixed elements), on the other hand, which is watertight at the level of the junction between the fairing and the side flange, for example through the use of a seal identified 10 and illustrated in Figure 2 of EP 1 612 304,
- alimentant en air cette chambre repérée E par une source d'air extérieur à la chambre. Cette chambre latérale au cylindre de cardage est ainsi mise en surpression, l'air s'échappant à la périphérie de la chambre latérale, et dans l'objectif de constituer une barrière active, repoussant les fibres textiles hors de cette chambre sur toute la périphérie circulaire de la chambre mise en surpression. Selon les constatations de l'inventeur, la mise en œuvre d'un tel procédé peut être à l'origine de trois problèmes d'encrassement.  - Air supplying this room marked E by a source of air outside the room. This side chamber with the carding cylinder is thus put under overpressure, the air escaping at the periphery of the lateral chamber, and for the purpose of constituting an active barrier, pushing the textile fibers out of this chamber over the entire periphery circular of the chamber put in overpressure. According to the findings of the inventor, the implementation of such a process can be at the origin of three fouling problems.
Un premier problème trouve son origine au niveau de la zone d'étanchéité entre la chambre latérale et le carénage courbe, zone par exemple illustrée à la vue de détail de la figure 2 du document EP 1 612 304 Al. En cette zone, l'étanchéité entre le flasque latéral et le carénage (i.e. le joint repéré 10) force l'air à remonter axialement l'inter-espace défini entre la paroi périphérique du cylindre et la paroi intérieure courbe du carénage. Toutefois, et selon les constatations de l'inventeur le débit d'air local de la fuite en cette zone d'étanchéité s'échappant de la chambre latérale n'est pas déterminé en ce qu'il constitue une partie non maîtrisable du flux d'air alimentant la chambre latérale : bien souvent cette fuite est trop importante en cette zone d'étanchéité : les pertes de charge étant plus grandes dans le sens axial du cylindre le long de l'inter-espace, ce flux d'air a tendance à ressortir par les bords longitudinaux du carénage en entraînant avec lui des fibres textiles qui s'échapperont du cylindre. A first problem originates at the level of the sealing zone between the lateral chamber and the curved fairing, an area for example illustrated in the detail view of FIG. 2 of EP 1 612 304 A1. In this zone, the sealing between the side flange and the fairing (ie the seal marked 10) forces air to axially up the inter-space defined between the peripheral wall of the cylinder and the curved inner wall of the fairing. However, and according to the findings of the inventor, the local air flow of the leak in this sealing zone escaping from the lateral chamber is not determined in that it constitutes an uncontrollable part of the flow of air. air supplying the side chamber: this leak is often too great in this sealing zone: the pressure losses being greater in the axial direction of the cylinder along the inter-space, this airflow tends to emerge from the longitudinal edges of the fairing by carrying with it textile fibers that will escape the cylinder.
Un second problème trouve son origine lorsque deux cylindres consécutifs mettent en œuvre le procédé selon le document EP 1 612 304 Al. Comme illustré à la figure 1 du document EP 1 612 304, cette barrière active peut être mise en œuvre non seulement aux extrémités du grand tambour (i.e le cylindre de cardage repéré 5), mais encore aux extrémités de l'avant train (i.e. le cylindre de cardage repéré 2), ainsi qu'aux extrémités du cylindre repéré 4 assurant le transfert de la nappe textile depuis l'avant train vers le grand tambour. Ainsi, la garniture du cylindre de transfert repéré 4 reprend la nappe textile du cylindre d'avant train repéré 2, au niveau d'une première zone de reprise entre ces deux cylindres, la garniture du grand tambour repéré 5 reprenant la nappe textile du cylindre de transfert repéré 4, au niveau d'une deuxième zone de reprise, distante de la première. A second problem has its origin when two consecutive cylinders implement the method according to document EP 1 612 304 A1. As illustrated in FIG. 1 of document EP 1 612 304, this active barrier can be implemented not only at the ends of the large drum (ie the carding cylinder marked 5), but also at the ends of the front train (ie the carding cylinder marked 2), and at the ends of the cylinder marked 4 ensuring the transfer of the textile web from the front train to the large drum. Thus, the lining of the transfer cylinder marked 4 takes up the textile ply of the front-end cylinder marked 2, at a first zone of recovery between these two cylinders, the lining of the large drum spotted 5 taking up the textile web of the cylinder. transfer identified 4, at a second recovery zone, distant from the first.
Selon les constatations de l'inventeur, la solution de barrière active du document EP 1 612 304 Al n'est pas satisfaisante en ces zones de reprise, et pour les raisons suivantes : According to the findings of the inventor, the active barrier solution of EP 1 612 304 A1 is not satisfactory in these areas of recovery, and for the following reasons:
- l'air s'échappant radialement à la périphérie de la chambre latérale associée au cylindre de transfert repéré 4 est, au niveau de chaque zone de reprise, en conflit immédiat avec l'air s'échappant radialement à la périphérie de la chambre latérale associée au cylindre de cardage (de l'avant train repéré 2, ou du grand tambour repéré 4) : concrètement et sauf à pouvoir équilibrer parfaitement les pressions de ces deux fuites, l'une prend le dessus sur l'autre et engendre une aspiration d'air dans la chambre latérale localement de plus faible pression, au niveau de cette zone de reprise, the air escaping radially at the periphery of the lateral chamber associated with the transfer cylinder marked 4 is, at each recovery zone, in immediate conflict with the air escaping radially at the periphery of the lateral chamber; associated with the carding cylinder (of the marked front end 2, or the large drum marked 4): concretely and except to be able to perfectly balance the pressures of these two leaks, one takes over the other and generates a suction of air in the lateral chamber of lower pressure locally, at this area of recovery,
- chaque zone de reprise entre deux cylindres est par ailleurs une zone où les cylindres sont intimement rapprochés à leur périphérie, ce qui engendre un écrasement de la couche limite d'air : cet écrasement engendre des flux d'air latéraux dirigés vers les extrémités du cylindre : des fibres textiles sont ainsi entraînées par ces flux d'air latéraux en direction des parties latérales aux cylindres, ces fibres étant alors aspirées dans la chambre latérale de plus faible pression.  each zone of recovery between two cylinders is moreover an area where the cylinders are intimately close to their periphery, which causes a crushing of the air boundary layer: this crushing generates lateral air flows directed towards the ends of the cylinder: textile fibers are thus driven by these lateral air flows towards the side parts to the rolls, these fibers then being sucked into the side chamber of lower pressure.
Cette entrée de fibres textiles dans la chambre latérale de plus faible pression au niveau des zones de reprise entre cylindre est le second problème identifié par l'inventeur. This entry of textile fibers into the lateral chamber of lower pressure at the areas of recovery between rolls is the second problem identified by the inventor.
Enfin un troisième problème trouve son origine lorsqu'un tel procédé est mis en œuvre également pour réduire les accumulations de fibres au niveau des parties latérales des organes cardants, à savoir des rouleaux, tels que les rouleaux balayeurs, et comme illustré à la figure 5 du document EP 1 612 304 Al. Comme expliqué au paragraphe 40, et pour sa mise en œuvre, chaque rouleau balayeur est équipé d'un flasque repéré F', fixe, délimitant avec le rouleau une chambre latérale E' . A cet effet, ce flasque repéré F' comporte une partie centrale sous forme d'un disque, s 'étendant globalement parallèlement à la face latérale du cylindre, et, de manière notable, un rebord externe, repéré 19b, de diamètre légèrement supérieur à l'extrémité du rouleau, venant coiffer l'extrémité du rouleau sur une faible distance axiale. Le diamètre interne du flasque fixe vient en appui sur un palier assurant le guidage en rotation du rouleau par rapport au bâti. A l'instar des cylindres de cardage, cette chambre latérale au rouleau est mise en surpression grâce à un repiquage d'air provenant de la chambre latérale du cylindre de cardage voisin. Finally, a third problem arises when such a method is also implemented to reduce the accumulation of fibers at the lateral parts of the carding members, namely rollers, such as the scanning rollers, and as illustrated in FIG. Figure 5 of EP 1 612 304 A1. As explained in paragraph 40, and for its implementation, each scanner roller is equipped with a flange marked F ', fixed, defining with the roller a side chamber E'. For this purpose, this flange marked F 'comprises a central portion in the form of a disc, extending generally parallel to the side face of the cylinder, and, notably, an outer rim, marked 19b, of diameter slightly greater than the end of the roll, capping the end of the roll on a short axial distance. The internal diameter of the fixed flange abuts on a bearing ensuring the rotational guidance of the roller relative to the frame. Like the carding rolls, this roll-side chamber is pressurized by air passing from the side chamber of the adjacent carding cylinder.
Bien que non illustrée à la figure 5, une paroi latérale vient classiquement prolonger le disque du flasque, notamment à sa partie supérieure, et de manière à fermer latéralement l'espace sous le capot de la carde qui recouvre l'ensemble des cylindres et rouleaux: selon les constatations de l'inventeur, la zone délimitée entre cette paroi latérale et le rebord repéré 19b forme un recoin, propice à l'encrassement, sur lequel les fibres textiles se déposent au cours de fonctionnement, sans jamais être évacuées. Although not illustrated in FIG. 5, a side wall conventionally extends the disk of the flange, in particular at its upper part, and so as to laterally close the space under the hood of the card which covers all the cylinders and rollers. According to the findings of the inventor, the zone defined between this side wall and the marked rim 19b forms a nook, conducive to fouling, on which the textile fibers are deposited during operation, without ever being evacuated.
La présente demande vise à répondre à tout ou partie de ces trois problèmes ci-dessus identifiés. The present application aims to answer all or part of these three problems identified above.
On connaît également du document CN 101 509 158 A un rouleau cardant dont l'arbre est monté rotatif dans un support par l'intermédiaire d'un palier. Comme visible par exemple à la figure 2 de ce document, ce support comporte deux parties 2, 21. La première partie 2 recouvre le palier au niveau d'une première extrémité et recouvre partiellement une face latérale du rouleau 1 au niveau de son autre extrémité en étant logé dans un perçage de la face latérale.  Document CN 101 509 158 A also discloses a carding roll whose shaft is rotatably mounted in a support via a bearing. As can be seen for example in FIG. 2 of this document, this support comprises two parts 2, 21. The first part 2 covers the bearing at a first end and partially overlaps a lateral face of the roll 1 at its other end. by being housed in a piercing of the lateral face.
Une chambre d'alimentation en air comprimé 7, 8, 13 est ménagée à l'intérieur des deux parties 2, 21 du support comportant plusieurs sections 7, 8, 13 et s'étend depuis une extrémité de la deuxième partie 21 du support comportant un raccord d'alimentation 51 en air comprimé jusqu'au perçage ménagé dans la face latérale du rouleau 1. L'air qui est fourni au niveau du raccord d'alimentation 51 parcourt d'abord la cavité annulaire 7, puis la chambre longitudinale 8 autour de l'arbre 11 et enfin la chambre 13 ménagée entre la face latérale du rouleau 1 et l'extrémité de la première partie du support 2, avant d'être expulsé en direction d'une face externe de la première partie 2 du support selon une direction axiale (par rapport à l'arbre 11), afin de chasser les fibres qui pourraient s'y être accumulées au cours du procédé de cardage. A compressed air supply chamber 7, 8, 13 is formed inside the two parts 2, 21 of the support comprising a plurality of sections 7, 8, 13 and extends from one end of the second part 21 of the support comprising a supply connection 51 in compressed air until the bore formed in the side face of the roll 1. The air which is supplied at the supply connection 51 firstly traverses the annular cavity 7, then the longitudinal chamber 8 around the shaft 11 and finally the chamber 13 formed between the lateral face of the roll 1 and the end of the first portion of the support 2, before being expelled towards an outer face of the first portion 2 of the support in an axial direction (relative to the shaft 11), in order to expel the fibers that could to be accumulated during the carding process.
Un tel dispositif présente plusieurs inconvénients. Such a device has several disadvantages.
Premièrement, en soufflant l'air selon une direction axiale, les fibres ayant pu s'accumuler sur la face externe de la première partie 2 du support ne seront pas expulsées de façon optimale. Firstly, by blowing the air in an axial direction, the fibers that could accumulate on the outer face of the first part 2 of the support will not be expelled optimally.
De plus, la longueur du trajet que devra parcourir l'air depuis le raccord d'alimentation 51 jusqu'à son expulsion en sortie de la chambre 13, est importante, ce qui augmente les pertes de charge le long du trajet, et nécessite de fournir de l'air comprimé au niveau du raccord d'alimentation 51 avec un débit et une pression très importants afin que le débit et la pression de l'air expulsé en sortie de la chambre 13 soient satisfaisants, ce qui est complexe et nécessite d'employer des solutions onéreuses pour l'alimentation en air comprimé, par exemple par l'emploi d'un compresseur, notamment si plusieurs dispositifs doivent être alimentés par le même moyen d'alimentation en air comprimé, par exemple un compresseur. L'invention se propose donc également de pallier ces différents inconvénients. In addition, the length of the path that will have to travel the air from the supply connection 51 to its expulsion at the outlet of the chamber 13, is important, which increases the pressure losses along the path, and requires supplying compressed air at the supply connection 51 with a very high flow rate and pressure so that the flow rate and the pressure of the air expelled at the outlet of the chamber 13 are satisfactory, which is complex and requires employ expensive solutions for the supply of compressed air, for example by the use of a compressor, especially if several devices must be fed by the same compressed air supply means, for example a compressor. The invention therefore also proposes to overcome these various disadvantages.
On connaît enfin du document JP 06051276 U un rouleau cardant comportant un arbre monté rotatif dans un support. Finally, document JP 06051276 U discloses a carding roll comprising a shaft rotatably mounted in a support.
Comme on peut le voir par exemple sur la figure 1 de ce document, une première chambre d'alimentation est ménagée entre deux flasques disposés autour de l'arbre 11. Un premier flasque est disposé à l'intérieur du rouleau cardant 7 et un deuxième flasque 12 est disposé de sorte à recouvrir la face latérale du rouleau cardant 7 et s'étend au-delà du rouleau cardant 7. Le deuxième flasque 12 forme un canal d'alimentation autour de la portion de l'arbre 11 saillant au-delà du rouleau cardant 7, communicant avec la première chambre d'alimentation. Le canal d'alimentation peut être alimenté en air comprimé, et l'air parcourt ce canal d'alimentation puis pénètre dans la chambre d'alimentation avant d'être expulsé au niveau d'une fente ménagée entre la paroi extérieure du rouleau cardant 7 et un épaulement ménagé sur le deuxième flasque 12. Une cloison 8 est fixée sur le deuxième flasque 12 et l'air expulsé au niveau de la fente en sortie de la chambre d'alimentation viendra expulser les fibres ayant pu s'accumuler entre la cloison 8 et une face d'un rouleau supérieur coopérant avec le rouleau cardant 7. As can be seen for example in Figure 1 of this document, a first feed chamber is formed between two flanges arranged around the shaft 11. A first flange is disposed inside the carding roller 7 and a second flange 12 is arranged so as to cover the lateral face of the carding roll 7 and extends beyond the carding roll 7. The second flange 12 forms a feed channel around the portion of the shaft 11 projecting beyond of the carding roll 7, communicating with the first feed chamber. The supply channel can be supplied with compressed air, and the air passes through this supply channel and enters the feed chamber before being expelled at a slot formed between the outer wall of the carding roller. and a shoulder formed on the second flange 12. A partition 8 is fixed on the second flange 12 and the air expelled at the slot at the outlet of the feed chamber will expel the fibers that may have accumulated between the partition 8 and a face of an upper roller cooperating with the carding roll 7.
Un tel dispositif présente plusieurs inconvénients. Such a device has several disadvantages.
Premièrement, la direction selon laquelle l'air est expulsé au niveau de la fente n'est pas nécessairement radiale (selon la direction de l'arbre 11) et les fibres ayant pu s'accumuler dans la zone entre le rouleau supérieur et la cloison 8 au niveau d'une face externe du deuxième flasque 12 ne seront donc pas expulsées de façon optimale. First, the direction in which the air is expelled at the slot is not necessarily radial (in the direction of the shaft 11) and the fibers that may have accumulated in the area between the top roll and the partition 8 at an outer face of the second flange 12 will not be expelled optimally.
De plus, la longueur du trajet que devra parcourir l'air depuis le canal d'alimentation jusqu'à son expulsion au niveau de la fente, est importante, ce qui augmente les pertes de charge le long du trajet, et nécessite de fournir de l'air comprimé avec un débit et une pression très importants afin que le débit et la pression de l'air expulsé au niveau de la fente soient satisfaisants, ce qui est complexe et nécessite d'employer des solutions onéreuses pour l'alimentation en air comprimé, par exemple par l'emploi d'un compresseur, notamment si plusieurs dispositifs doivent être alimentés par le même moyen d'alimentation en air comprimé, par exemple un compresseur. In addition, the length of the path that will have to travel the air from the supply channel until expulsion at the slot, is important, which increases the pressure losses along the path, and requires to provide compressed air with a very high flow rate and pressure so that the flow and the pressure of the air expelled at the slot are satisfactory, which is complex and requires the use of expensive solutions for the air supply compressed, for example by the use of a compressor, especially if several devices must be powered by the same means for supplying compressed air, for example a compressor.
Enfin, les fibres vont s'accumuler sur un rebord sensiblement horizontal du deuxième flasque 12, perpendiculaire à la cloison 8 et l'air expulsé subira des perturbations au niveau de cette zone à cause de l'orthogonalité entre le rebord du deuxième flasque 12 et la cloison 8, ce qui ne permet pas d'expulser convenablement les fibres ayant pu s'accumuler dans cette zone. Finally, the fibers will accumulate on a substantially horizontal flange of the second flange 12, perpendicular to the partition 8 and the expelled air will undergo disturbances in this area because of the orthogonality between the flange of the second flange 12 and septum 8, which does not allow to properly expel the fibers that may have accumulated in this area.
L'invention se propose donc également de pallier ces différents inconvénients. The invention therefore also proposes to overcome these various disadvantages.
D'autres buts et avantages apparaîtront au cours de la description qui va suivre qui n'est donnée qu'à titre indicatif et qui n'a pas pour but de la limiter. Aussi l'invention concerne tout d'abord une carde comprenant un cylindre de cardage et au moins un rouleau cardant monté à la périphérie du cylindre de cardage, l'arbre support du rouleau cardant étant monté rotatif sur le bâti par l'intermédiaire de paliers, de part et d'autre du rouleau cardant, présentant au moins deux systèmes de flasques latéraux, montés fixes de part et d'autre du rouleau cardant, couvrant chacun la face latérale du rouleau cardant, traversés chacun par l'arbre support, reliant chacun ledit palier à la périphérie du rouleau cardant, chaque système de flasque comprenant : Other goals and advantages will become apparent from the following description which is given for information only and which is not intended to limit it. Also the invention relates first of all to a card comprising a carding cylinder and at least one carding roller mounted on the periphery of the carding cylinder, the support shaft of the carding roller being rotatably mounted on the frame by means of bearings. , on both sides of the carding roll, having at least two side plate systems, mounted fixed on either side of the carding roll, each covering the lateral face of the carding roll, each traversed by the support shaft, connecting each said bearing at the periphery of the carding roller, each flange system comprising:
- une cavité, interne audit système de flasque,  a cavity, internal to said flange system,
- des moyens externes pour alimenter en air ladite cavité,  external means for supplying air to said cavity,
- un système de buse convenant pour souffler la zone périphérique fixe dudit système de flasque, au moins à sa partie supérieure, à partir de l'air de ladite cavité.  - A nozzle system suitable for blowing the fixed peripheral zone of said flange system, at least at its upper part, from the air of said cavity.
Selon l'invention, le système de flasque présente deux éléments circulaires, assemblés l'un à l'autre, y compris un premier élément de flasque recouvrant la face latérale du rouleau, ainsi qu'un deuxième élément d'appui dont le diamètre interne coopère directement ou non avec le palier, ladite cavité alimentée en air étant matérialisée au moins en partie par une gorge dudit deuxième élément d'appui débouchant latéralement audit deuxième élément d'appui, fermée partiellement par la surface interne du premier élément de flasque, opposée à la face externe du premier élément tournée vers le rouleau, et de manière à ce que le système de buse résulte d'une fente du système de flasque défini par un interstice périphérique entre ledit premier élément de flasque et ledit deuxième élément d'appui. According to the invention, the flange system has two circular elements, assembled to one another, including a first flange element covering the lateral face of the roller, and a second bearing element whose internal diameter cooperates directly or not with the bearing, said cavity supplied with air being materialized at least in part by a groove of said second support element opening laterally to said second support element, partially closed by the inner surface of the first flange element, opposite on the outer face of the first member facing the roll, and so that the nozzle system results from a slit of the flange system defined by a peripheral gap between said first flange member and said second support member.
Selon des caractéristiques optionnelles de l'invention prises seules ou en combinaison : la cavité est une chambre annulaire s 'étendant au moins en partie autour de l'axe du rouleau cardant ; le système de buse présente une fente périphérique s 'étendant et débouchant de manière continue dans ladite cavité annulaire, assurant un soufflage d'air sur la périphérie dudit système de flasque, sans discontinuité de soufflage, au moins le long de la partie active de la cavité annulaire ; la carde présente un organe d'obturation logé partiellement dans ladite cavité annulaire sur une fraction angulaire de ladite cavité annulaire, centrée sur la zone d'interface entre le cylindre de cardage et le rouleau cardant, de manière à interdire un soufflage direct dudit système de buse vers le cylindre de cardage, selon une direction radiale audit cylindre de cardage ; lesdits moyens externes pour alimenter en air ladite cavité annulaire alimentent directement la cavité annulaire en une zone de la cavité éloignée de la zone d'interface entre le cylindre et le rouleau, tel que par exemple diamétralement opposée à ladite zone ; lesdits moyens externes pour alimenter en air ladite cavité annulaire comprennent un organe de réglage de débit du type vis-pointeau convenant pour régler le débit d'air arrivant dans ladite cavité ; According to optional features of the invention taken alone or in combination: the cavity is an annular chamber extending at least partly around the axis of the carding roller; the nozzle system has a peripheral slot extending and continuously opening into said annular cavity, providing an air blast on the periphery of said flange system, without blowing discontinuity, at least along the active portion of the annular cavity; the card has a closure member partially housed in said annular cavity on an angular fraction of said annular cavity, centered on the zone interface between the carding cylinder and the carding roll, so as to prevent a direct blow from said nozzle system to the carding roll in a radial direction to said carding roll; said external means for supplying air to said annular cavity directly feeds the annular cavity into a zone of the cavity remote from the interface zone between the roll and the roll, such as, for example, diametrically opposite said zone; said external means for supplying air to said annular cavity comprises a screw-needle type flow control member suitable for adjusting the flow rate of air entering said cavity;
- le rouleau cardant présente une extrémité cylindrique, en périphérie du rouleau, saillante latéralement de la face latérale dudit rouleau, venant coiffer un disque du système de flasque, le disque et l'extrémité cylindrique étant montés de manière étanche grâce à une étanchéité circulaire réalisée entre le diamètre externe du disque du système de flasque, d'une part, et le diamètre interne de l'extrémité cylindrique , d'autre part ; la carde présente au moins une buse et des moyens pour alimenter en air ladite buse, ladite buse venant souffler selon une direction axiale, localement au niveau de la zone d'interface entre le cylindre de cardage et ledit rouleau cardant ; the carding roll has a cylindrical end, at the periphery of the roll, projecting laterally from the lateral face of said roll, which caps a disc of the flange system, the disc and the cylindrical end being sealingly mounted by virtue of a circular sealing performed between the outer diameter of the disk of the flange system, on the one hand, and the inner diameter of the cylindrical end, on the other hand; the card has at least one nozzle and means for supplying air to said nozzle, said nozzle being blown in an axial direction, locally at the interface zone between the carding cylinder and said carding roller;
- le système de flasque est prolongé par une paroi latérale fixe, fermant le carter latéralement, s'étendant jusqu'au capot du carter ; - The flange system is extended by a fixed side wall, closing the housing laterally, extending to the housing cover;
- l'interstice périphérique entre le premier élément de flasque et le deuxième élément d'appui définissant la fente du système de buse est incliné en direction de la paroi latérale fixe par rapport à la verticale d'un angle compris entre 2° et 45°, le deuxième élément d'appui étant conformé de sorte à ce que le système de buse vienne lécher la paroi latérale fixe ; le système de flasque comprend une gorge périphérique, recevant en emboîtement un bord de la paroi latérale fixe. - the peripheral gap between the first flange element and the second support element defining the slot of the nozzle system is inclined towards the fixed side wall relative to the vertical by an angle between 2 ° and 45 ° the second support member being shaped so that the nozzle system licks the fixed side wall; the flange system comprises a peripheral groove, receiving in nesting an edge of the fixed side wall.
Selon un mode de réalisation, la carde comprend : According to one embodiment, the card comprises:
- un premier flasque latéral fixe, recouvrant la face latérale du cylindre de cardage coopérant de manière étanche avec l'extrémité cylindrique périphérique dudit cylindre de cardage ; a first fixed lateral flange covering the lateral face of the carding cylinder cooperating sealingly with the peripheral cylindrical end of said carding cylinder;
- au moins un carénage, disposé fixe en partie inférieure du cylindre de cardage, ledit carénage s 'étendant axialement sur toute la longueur du cylindre de cardage, la paroi interne du carénage étant agencée à proximité immédiate dudit cylindre de cardage, reprenant la courbure du cylindre sur une fraction angulaire du cylindre, définissant un inter-espace s 'étendant en longueur suivant un arc de cercle dans un plan perpendiculaire au cylindre de cardage , - At least one fairing, arranged fixed in the lower part of the carding cylinder, said fairing extending axially over the entire length of the carding cylinder, the inner wall of the fairing being arranged in the immediate vicinity of said carding cylinder, taking up the curvature of the cylinder on an angular fraction of the cylinder, defining an interspace extending in length along an arc of a circle in a plane perpendicular to the carding cylinder,
- un système de soufflage de la zone d' inter-espace comprenant : a blowing system of the inter-space zone comprising:
-un second flasque latéral, perpendiculaire à l'axe longitudinal du cylindre et du carénage, fermant latéralement ledit inter-espace entre le carénage et le cylindre de cardage, comprenant une fente traversante, en regard dudit inter-espace,  a second lateral flange, perpendicular to the longitudinal axis of the cylinder and the fairing, closing laterally said inter-space between the fairing and the carding cylinder, comprising a through slot, facing said inter-space,
- une chambre de répartition d'air au dos du second flasque, communicant avec ladite fente traversante,  an air distribution chamber at the back of the second flange, communicating with said through slot,
- des moyens pour alimenter la chambre de répartition d'air en air comprenant un moyen de réglage de débit alimentant ladite chambre de répartition d'air .  - Means for supplying the air distribution chamber with air comprising a flow control means supplying said air distribution chamber.
L'invention concerne encore un procédé pour réduire l'accumulation de fibres dans les parties latérales d'un rouleau rotatif d'une carde selon l'invention, dans lequel on alimente en air la cavité de chaque système de flasque de manière à mettre œuvre un soufflage radiale, au moins sur la partie supérieure périphérique fixe du système de flasque. The invention also relates to a method for reducing the accumulation of fibers in the lateral parts of a rotary roller of a card according to the invention, in which the cavity of each flange system is supplied with air so as to implement radial blowing, at least on the fixed peripheral upper part of the flange system.
Selon un mode de réalisation, le procédé est mis en œuvre dans une carde présentant ladite au moins une buse, et dans lequel on alimente en air deux buses situées aux deux extrémités de la zone d'interface, chacune soufflant selon une direction axiale, localement au niveau de la zone d'interface entre le cylindre de cardage et ledit rouleau cardant. Selon un mode de réalisation, le procédé est mis en œuvre dans une carde selon l'invention comprenant ledit au moins un système de soufflage de la zone d'inter-espace, dans lequel on alimente en air deux systèmes de soufflage de la zone d'inter-espace de manière à engendrer un soufflage localisé au niveau de la zone d'inter espace entre le cylindre de cardage et le carénage, aux deux extrémités longitudinales dudit inter-espace . According to one embodiment, the method is implemented in a card having said at least one nozzle, and in which air is supplied two nozzles located at both ends of the interface zone, each blowing in an axial direction, locally at the interface area between the carding cylinder and said carding roller. According to one embodiment, the method is implemented in a card according to the invention comprising said at least one blowing system of the inter-space zone, in which two blowing systems of the zone d are air fed. inter-space so as to generate a localized blow at the inter-space zone between the carding cylinder and the fairing, at the two longitudinal ends of said inter-space.
L'invention sera mieux comprise à la lecture de la description suivante accompagnée des dessins en annexe parmi lesquels : The invention will be better understood on reading the following description accompanied by the appended drawings among which:
- La figure 1 est une vue de coupe vue partielle d'une carde selon l'état de la technique, illustrant en détail le flasque latéral fixe reliant, d'une part un palier support de l'arbre de rotation du rouleau, et d'autre part, la périphérie du rouleau et selon un agencement connu de l'état de la technique mentionné dans l'introduction : cette vue illustre plus particulièrement le troisième problème identifié par l'inventeur dans cet état de la technique, à savoir une accumulation de fibres sur le recoin formé entre, d'une part, le rebord du flasque coiffant le rouleau, et une paroi verticale prolongeant le flasque, d'autre part.  FIG. 1 is a partial sectional view of a card according to the state of the art, illustrating in detail the fixed lateral flange connecting, on the one hand, a support bearing of the rotation shaft of the roller, and on the other hand, the periphery of the roll and according to a known arrangement of the state of the art mentioned in the introduction: this view more particularly illustrates the third problem identified by the inventor in this state of the art, namely an accumulation fibers on the corner formed between, on the one hand, the flange of the flange capping the roller, and a vertical wall extending the flange, on the other.
- La figure 2 est une vue de coupe partielle d'une carde selon l'invention, illustrant en détail le système de flasque latéral fixe reliant, d'une part le palier support de l'arbre de rotation du rouleau, et d'autre part, la périphérie du rouleau, dont la conception permet avantageusement la mise en œuvre d'un soufflage au niveau du recoin formé entre la périphérie du système de flasque et la paroi latérale, et de manière à résoudre le problème d'accumulation de fibres en ce recoin,  FIG. 2 is a partial sectional view of a card according to the invention, illustrating in detail the fixed lateral flange system connecting, on the one hand, the support bearing of the rotation shaft of the roller, and on the other hand on the other hand, the periphery of the roll, the design of which advantageously allows the implementation of a blow-molding at the corner formed between the periphery of the flange system and the side wall, and so as to solve the problem of accumulation of fibers by this corner,
- La figure 3 est une vue de coupe partielle selon la figure 2, illustrant également en détail, d'une part, en partie supérieure du système de flasque la présence d'un organe de réglage de débit, du type vis-pointeau permettant de régler le débit d'air en entrée de la cavité annulaire du système de flasque, et d'autre part, en partie inférieure la présence d'un organe d'obturation logé partiellement dans ladite cavité annulaire sur une fraction angulaire de ladite cavité annulaire de manière à interdire un soufflage direct dudit système de buse vers le cylindre de cardage, mais encore, la présence d'une buse, distincte du système de flasque, venant souffler selon une direction axiale, localement au niveau de la zone d'interface entre le cylindre de cardage et ledit rouleau cardant,  FIG. 3 is a partial sectional view according to FIG. 2, also illustrating in detail, on the one hand, in the upper part of the flange system the presence of a screw-needle-type flow control device allowing adjusting the air flow at the inlet of the annular cavity of the flange system, and secondly, in the lower part the presence of a closure member partially housed in said annular cavity on an angular fraction of said annular cavity of so as to prevent a direct blow from said nozzle system to the carding cylinder, but also, the presence of a nozzle, separate from the flange system, coming to blow in an axial direction, locally at the interface zone between the carding cylinder and said carding roll,
- La figure 4 est une vue en perspective illustrant schématiquement, d'une part, les flux radiaux générés par le système de flasque, constituant une barrière active contre le dépôt de fibres sur la périphérie du système, et d'autre part, le flux axial de la buse constituant une barrière active au niveau de l'extrémité de la zone d'interface entre le rouleau cardant et le cylindre de cardage, FIG. 4 is a perspective view diagrammatically illustrating, on the one hand, the radial flows generated by the flange system, constituting an active barrier against depositing fibers on the periphery of the system, and on the other hand, the axial flow of the nozzle constituting an active barrier at the end of the interface zone between the carding roll and the carding roll,
- La figure 5a est une vue de coupe partielle d'une carde selon l'état de la technique, selon un plan de coupe passant par l'axe de rotation du cylindre, illustrant plus particulièrement la chambre latérale mise en surpression délimitée entre la face latérale du cylindre de cardage (élément rotatif), d'une part, et le flasque latéral et le carénage (éléments fixes), d'autre part, qui est étanche au niveau de la jonction entre le carénage et le flasque latéral : cette vue illustre encore la création d'un flux axial de fuite au niveau de la zone d'interface entre le carénage et le cylindre dont le débit n'est pas déterminé en ce qu'il constitue une partie non maîtrisable du flux d'air total alimentant la chambre latérale, cette vue a pour objet (en combinaison avec la figure 5b) d'illustrer le premier problème identifié par l'inventeur,  - Figure 5a is a partial sectional view of a card according to the state of the art, according to a sectional plane passing through the axis of rotation of the cylinder, illustrating more particularly the lateral chamber placed under pressure delimited between the face side of the carding cylinder (rotary element), on the one hand, and the lateral flange and the fairing (fixed elements), on the other hand, which is sealed at the junction between the fairing and the lateral flange: this view further illustrates the creation of an axial leak flow at the interface zone between the shroud and the cylinder whose flow is not determined in that it constitutes an uncontrollable part of the total air flow supplying the lateral chamber, this view has the object (in combination with FIG. 5b) of illustrating the first problem identified by the inventor,
- La figure 5b est une vue de la carde de la figure 5, selon un plan de coupe perpendiculaire à l'axe du cylindre, cette vue illustre plus particulièrement le premier problème d'encrassement identifié par l'inventeur dans cet état de la technique, à savoir (et lorsque ce flux axial est non maîtrisé) la naissance de flux périphériques le long de l'inter- espace entre le carénage et le cylindre, qui ressortent par les bords longitudinaux du carénage en entraînant des fibres,  FIG. 5b is a view of the card of FIG. 5, in a section plane perpendicular to the axis of the cylinder, this view more particularly illustrating the first fouling problem identified by the inventor in this state of the art. , ie (and when this axial flow is uncontrolled) the birth of peripheral flows along the gap between the fairing and the cylinder, which emerge from the longitudinal edges of the fairing by driving fibers,
- La figure 6 est une vue de côté illustrant un cylindre de cardage, et la présence d'un carénage, la présence d'un flasque à l'extrémité du carénage étant omise,  FIG. 6 is a side view illustrating a carding cylinder, and the presence of a fairing, the presence of a flange at the end of the fairing being omitted,
- La figure 7 est une vue selon la figure 6 illustrant ce flasque, dit second flasque latéral, appartenant au système de soufflage de la zone d'interface entre le carénage et le cylindre,  FIG. 7 is a view according to FIG. 6 illustrating this flange, said second lateral flange, belonging to the blowing system of the interface zone between the fairing and the cylinder,
- La figure 8 est une vue opposée à la figure 7, illustrant particulièrement la présence d'une fente de soufflage en regard dudit inter-espace, s'étendant en longueur suivant la périphérie du cylindre en reprenant la courbure du cylindre,  FIG. 8 is a view opposite to FIG. 7, particularly illustrating the presence of a blowing slot facing said inter-space, extending in length along the periphery of the cylinder by taking up the curvature of the cylinder,
- La figure 9 est une vue selon un plan de coupe traversant simultanément le cylindre, le carénage et le système de soufflage de la zone d'interface, cette vue illustrant plus particulièrement une chambre de répartition d'air du système de soufflage communicant avec ladite fente et un organe de réglage de débit permettant le contrôle de débit d'air alimentant ladite chambre de répartition d'air, - La figure 10 est une vue de coupe vue partielle d'une carde selon l'état de la technique, illustrant le deuxième problème d'encrassement identifié par l'inventeur, au niveau de la zone de reprise entre deux cylindres de pression, lorsque la chambre latérale d'un cylindre n'est pas équilibrée en pression avec la chambre latérale du cylindre voisin au niveau de cette zone de reprise, à savoir l'aspiration de fibres textiles dans la chambre localement de plus faible pression au niveau de cette zone de reprise, FIG. 9 is a view along a section plane simultaneously traversing the cylinder, the shroud and the blowing system of the interface zone, this view more particularly illustrating an air distribution chamber of the blowing system communicating with said slot and a flow control member for controlling air flow supplying said air distribution chamber, FIG. 10 is a partial sectional view of a card according to the state of the art, illustrating the second fouling problem identified by the inventor, at the level of the zone of recovery between two pressure cylinders, when the lateral chamber of a cylinder is not pressure-balanced with the lateral chamber of the adjacent cylinder at this recovery zone, namely the suction of textile fibers in the chamber of locally lower pressure at this zone of recovery,
- La figure 11 est vue d'une configuration de carde conforme à l'invention, à titre d'exemple de réalisation. Nous décrivons à titre d'exemple non limitatif à la figure 11 une carde pour la production de non tissés, ou encore par exemple de semi-peignés. Cette carde 1 comprend en entrée une auge d'alimentation (non illustrée), un rouleau alimentaire 3c et un cylindre briseur 21. Le cylindre briseur 21 alimente le cylindre de cardage repéré 2a, usuellement appelé cylindre d'avant train. Plusieurs ensembles cardants successifs sont prévus à la périphérie du cylindre 2a, chaque ensemble comprenant un rouleau balayeur 3a suivi d'un rouleau travailleur 3b.  FIG. 11 is a view of a card configuration according to the invention, by way of exemplary embodiment. We describe as a non-limiting example in Figure 11 a card for the production of nonwoven, or for example semi-combed. This card 1 comprises as input a feed trough (not shown), a food roll 3c and a breaker cylinder 21. The breaker cylinder 21 feeds the marked carding cylinder 2a, usually called pre-train cylinder. Several successive carding assemblies are provided at the periphery of the cylinder 2a, each assembly comprising a brush roll 3a followed by a worker roll 3b.
Un cylindre de transfert 2b reprend les fibres du cylindre de cardage 2a et les transferts jusqu'à un second cylindre de cardage 2c. Ce second cylindre de cardage 2c, usuellement appelé grand tambour, comporte, à l'instar du premier cylindre de cardage 2c, une pluralité d'ensemble cardants successifs, chaque ensemble comprenant un rouleau balayeur 3a suivi d'un rouleau travailleur 3b. A transfer cylinder 2b takes up the fibers of the carding cylinder 2a and transfers them to a second carding cylinder 2c. This second carding cylinder 2c, usually called large drum, comprises, like the first carding cylinder 2c, a plurality of successive carding assemblies, each set comprising a brush roll 3a followed by a worker roller 3b.
Dans une telle carde, les actions combinées des garnitures du cylindre de cardage rotatif et des ensembles cardants permettent d'individualiser les fibres du matelas de fibres introduit en entrée. Deux sorties de carde comprennent chacune un cylindre peigneur 2d ou 2f, un rouleau détacheur 3d, et une bande de convoyage (non illustrée). In such a card, the combined actions of the rotary carding cylinder liners and carding assemblies allow to individualize the fibers of the fiber mat introduced at the entrance. Two card outlets each include a 2d or 2f doffer roll, a 3d peeler roll, and a conveyor belt (not shown).
L'invention s'intéresse tout d'abord à la résolution du troisième problème identifié par l'inventeur, à savoir une accumulation de fibres Ac' sur le recoin formé entre, d'une part, le rebord 19b' du flasque F' coiffant le rouleau qui peut être un rouleau balayeur ou un rouleau travailleur, et une paroi verticale prolongeant le flasque, d'autre part. Ce problème est représenté à la figure 1 qui illustre un état de la technique mentionné dans l'introduction. A cette figure 1, on reconnaît le rouleau qui peut être un rouleau balayeur 3a' ou travailleur 3b', le flasque F' fixe, sensiblement parallèle à la face latérale du rouleau et formant la chambre latérale E' qui, selon l'état de la technique divulgué à la figure 5 du document EP 1 612 304 est alimentée en air et ainsi mise sous pression. On reconnaît encore le disque du flasque, sensiblement parallèle à la face latérale du rouleau et le rebord repéré 19b', qui s'étend en longueur suivant une direction axiale pour venir coiffer le rouleau. On remarque que ce rebord 19b', fixe, forme avec une paroi verticale fixe juxtaposée un recoin favorisant l'encrassement où naisse une accumulation Ac' de fibres. The invention is primarily concerned with the resolution of the third problem identified by the inventor, namely an accumulation of fibers Ac 'on the nook formed between, on the one hand, the rim 19b' of the flange F 'styling the roller which can be a sweeping roller or a worker roller, and a vertical wall extending the flange, on the other hand. This problem is shown in Figure 1 which illustrates a state of the art mentioned in the introduction. In this FIG. 1, the roller which can be a scanning roll 3a 'or worker 3b', the fixed flange F ', substantially parallel to the lateral face of the roll and forming the lateral chamber E' which, depending on the the technique disclosed in Figure 5 of EP 1 612 304 is supplied with air and thus pressurized. The disc of the flange is still recognizable, substantially parallel to the lateral face of the roll and the marked flange 19b ', which extends in length in an axial direction to cover the roll. It is noted that this rim 19b ', fixed, forms with a fixed vertical wall juxtaposed a corner promoting fouling where a build-up Ac' of fibers.
Aussi, l'invention concerne une carde 1 comprenant un cylindre de cardage 2 et au moins un rouleau cardant 3 monté à la périphérie du cylindre de cardage 2. L'arbre support 30 du rouleau cardant 3 est monté rotatif sur le bâti par l'intermédiaire de paliers 4, de part et d'autre du rouleau cardant 3. Also, the invention relates to a card 1 comprising a carding cylinder 2 and at least one carding roll 3 mounted on the periphery of the carding cylinder 2. The support shaft 30 of the carding roll 3 is rotatably mounted on the frame by the intermediate bearings 4, on both sides of the carding roller 3.
La carde comprend au moins deux systèmes de flasques latéraux 5, montés fixes de part et d'autre du rouleau cardant 3, couvrant chacun la face latérale du rouleau cardant, traversés chacun par l'arbre support 30, reliant chacun ledit palier 4 à la périphérie du rouleau cardant 3. The card comprises at least two lateral flange systems 5, fixedly mounted on either side of the carding roller 3, each covering the lateral face of the carding roll, each traversed by the support shaft 30, each connecting said bearing 4 to the periphery of the carding roller 3.
Chaque système de flasque 5 comprend : Each flange system 5 comprises:
- une cavité 50, interne audit système de flasque,  a cavity 50, internal to said flange system,
- des moyens externes 51 pour alimenter en air ladite cavité,  external means 51 for supplying air to said cavity,
- un système de buse 52 convenant pour souffler la zone périphérique fixe dudit système de flasque, au moins à sa partie supérieure, à partir de l'air de ladite cavité.  a nozzle system 52 suitable for blowing the fixed peripheral zone of said flange system, at least at its upper part, from the air of said cavity.
L'invention est née de la constatation par l'inventeur que la surface périphérique du système de flasque 5 forme, avec une paroi verticale latérale repérée 8, une zone de recoin fixe, favorable au dépôt de fibres textiles. The invention arose from the finding by the inventor that the peripheral surface of the flange system 5 forms, with a side vertical wall marked 8, a fixed corner area, favorable to the deposition of textile fibers.
Avantageusement, le système de flasque 5 peut résulter de l'assemblage de deux éléments circulaires, assemblés l'un à l'autre, y compris un premier élément de flasque 54 recouvrant la face latérale du rouleau 3, ainsi qu'un deuxième élément d'appui 55 dont le diamètre interne coopère directement (ou non) avec le palier 4. Advantageously, the flange system 5 can result from the assembly of two circular elements, assembled to one another, including a first flange element 54. covering the lateral face of the roll 3, and a second bearing element 55 whose inner diameter cooperates directly (or not) with the bearing 4.
Ladite cavité 50 alimentée en air peut être matérialisée au moins en partie par une gorge circulaire dudit deuxième élément d'appui 55 débouchant latéralement audit deuxième élément d'appui 55. Cette gorge est fermée partiellement par la surface interne du premier élément de flasque 54, opposée à la face externe du premier élément 54, à savoir la face tournée vers le rouleau 3. Le système de buse 52 résulte alors d'une fente du système de flasque 5 définie par un interstice périphérique entre ledit premier élément de flasque 54 et ledit deuxième élément d'appui 55 défini par les parois entre ces deux éléments. Said cavity 50 supplied with air may be embodied at least in part by a circular groove of said second bearing element 55 opening laterally to said second bearing element 55. This groove is partially closed by the internal surface of the first flange element 54, opposite to the outer face of the first element 54, namely the side facing the roller 3. The nozzle system 52 then results from a slit of the flange system 5 defined by a peripheral gap between said first flange element 54 and said second support element 55 defined by the walls between these two elements.
Un tel agencement est illustré à titre d'exemple à la figure 2. On reconnaît le rouleau cardant 3, qui peut être un rouleau balayeur 3a ou un rouleau travailleur 3b, l'arbre support 30 qui s'étend longitudinalement de part et d'autre du support, guidé de part et d'autre du rouleau par des paliers 4. Chaque palier 4 comporte une bague intérieure solidaire en rotation avec l'arbre et une bague extérieure, fixe, solidaire du bâti qui sont guidées en rotation l'une par rapport à l'autre notamment au moyen de roulements. Such an arrangement is illustrated by way of example in FIG. 2. The carding roll 3, which may be a sweeping roll 3a or a worker roll 3b, is recognized, the support shaft 30 extending longitudinally on both sides. other support, guided on both sides of the roller by bearings 4. Each bearing 4 comprises an inner ring secured to rotate with the shaft and an outer ring, fixed, integral with the frame which are guided in rotation one of relative to the other, particularly by means of bearings.
On reconnaît encore le système de flasques 5, latéral monté fixe couvrant la face latérale du rouleau cardant, traversés chacun par l'arbre support 30, reliant chacun ledit palier 4 à la périphérie du rouleau cardant 3. Ce système de flasque 5 forme avec la face latérale du rouleau, une chambre de préférence étanche protégeant cet inter-espace des entrées de fibres, un joint de type tournant, circulaire, pouvant être prévu entre le système de flasque, fixe, et le rouleau 3, rotatif. The flange system 5, fixedly mounted on the lateral side of the lateral surface of the carding roller, each traversed by the support shaft 30, each connecting said bearing 4 to the periphery of the carding roller 3, is also recognizable. This flange system 5 forms with the lateral side of the roller, a preferably sealed chamber protecting this inter-space of the fiber entries, a rotating type seal, circular, which can be provided between the flange system, fixed, and the roller 3, rotatable.
Comme illustré à titre d'exemple à la figure 4, un tel système de flasque 5 permet de mettre en œuvre un soufflage radial au moins sur la partie supérieure du flasque de l'intérieur vers l'extérieur, et dans l'objectif d'interdire les accumulations de fibres en cette zone de recoin. Le soufflage mis en œuvre peut être continu dans le temps ou non, par exemple réalisé périodiquement. As illustrated by way of example in FIG. 4, such a flange system 5 makes it possible to implement a radial blowing at least on the upper part of the flange from the inside to the outside, and for the purpose of prohibit the accumulation of fibers in this nook zone. The blowing implemented may be continuous in time or not, for example performed periodically.
Les fibres évacuées par le soufflage mis en œuvre par le système de flasque peuvent être prises dans un courant d'air forcé généré entre le capot et les cylindres/rouleaux de la carde, et connu en tant que tel. Un tel courant est représenté à la figure 11 par des flèches, une ou plusieurs hottes aspirantes 101, 102, 103 du capot pourvues de moyens de ventilation permettant de générer un courant d'aspiration du bas vers le haut. The fibers discharged by the blowing implemented by the flange system can be taken in a forced air stream generated between the hood and the rolls / rolls of the card, and known as such. Such a current is represented in FIG. 11 by arrows, one or more suction hoods 101, 102, 103 of the hood provided with ventilation means for generating a suction flow from bottom to top.
La cavité 50 peut être une chambre annulaire s'étendant au moins en partie autour de l'axe du rouleau cardant 3. Le système de buse 52 peut présenter une fente périphérique s'étendant et débouchant de manière continue dans ladite cavité 50 annulaire, assurant un soufflage d'air sur la périphérie dudit système de flasque, sans discontinuité de soufflage, au moins le long de la partie active de la cavité 50 annulaire. Alternativement et selon un mode de réalisation non illustré, le système de buse peut comprendre plusieurs ouverture de buses distinctes, réparties à la périphérie du système chaque ouverture de buse communicant avec ladite cavité annulaire. The cavity 50 may be an annular chamber extending at least partly around the axis of the carding roller 3. The nozzle system 52 may have a peripheral slot extending and continuously opening into said annular cavity 50, ensuring blowing air on the periphery of said flange system, without blowing discontinuity, at least along the active portion of the annular cavity 50. Alternatively and according to a non-illustrated embodiment, the nozzle system may comprise several distinct nozzle openings, distributed at the periphery of the system each nozzle opening communicating with said annular cavity.
Afin d'éviter une interférence directe du soufflage avec la fibre du rouleau, un organe d'obturation 53 peut être logé partiellement dans ladite cavité 50 annulaire sur une fraction angulaire de ladite cavité annulaire, de préférence centrée sur la zone d'interface Zrc entre le cylindre de cardage 2 et le rouleau cardant 3. In order to avoid a direct interference of the blowing with the fiber of the roll, a shutter member 53 may be partially housed in said annular cavity 50 on an angular fraction of said annular cavity, preferably centered on the interface zone Zrc between the carding cylinder 2 and the carding roll 3.
Cet organe d'obturation 53 interdit alors un soufflage direct dudit système de buse 52 vers le cylindre de cardage 3, à savoir selon une direction radiale audit cylindre de cardage 3. La partie de la cavité 50 logeant l'organe d'obturation 53 est alors rendue inactive. This closure member 53 then prohibits a direct blowing of said nozzle system 52 to the carding cylinder 3, namely in a radial direction to said carding cylinder 3. The portion of the cavity 50 housing the closure member 53 is then rendered inactive.
En particulier, et dans ce cas, lesdits moyens externes 51 pour alimenter en air ladite cavité annulaire alimentent directement la cavité 50 annulaire en une zone de la cavité éloignée de la zone d'interface Zrc entre le cylindre et le rouleau, tel que par exemple diamétralement opposée à ladite zone comme représenté à titre indicatif à la figure 3. Lesdits moyens externes 51 pour alimenter en air ladite cavité 50 annulaire peuvent comprendre un organe de réglage de débit 57 du type vis-pointeau convenant pour régler le débit d'air arrivant dans ladite cavité 50. De préférence, chaque système de flasque 5 présente un tel moyen de réglage de débit 57, individuel. In particular, and in this case, said external means 51 for supplying air to said annular cavity directly feed the annular cavity 50 into an area of the cavity remote from the interface zone Zrc between the roll and the roll, such as for example diametrically opposed to said zone as shown for reference in FIG. 3. Said external means 51 for supplying air to said annular cavity 50 may comprise a flow-rate adjusting member 57 of the screw-needle type suitable for regulating the flow of air coming in. in said cavity 50. Preferably, each flange system 5 has such an individual flow control means 57.
Encore, et dans le but de limiter la surface de cette zone de recoin, fixe, le rouleau cardant 3 présente une extrémité cylindrique 31, en périphérie du rouleau, saillante latéralement de la face latérale dudit rouleau, venant coiffer un disque du système de flasque 5. Le disque D et l'extrémité cylindrique 31 peuvent être montées de manière étanche grâce à une étanchéité circulaire 6, du type joint tournant réalisée entre le diamètre externe du disque D, d'une part, et le diamètre interne de l'extrémité cylindrique 31 du rouleau 3, d'autre part. Autrement dit, le rouleau 3 vient coiffer le système de flasque 5 pour réaliser l'étanchéité rouleau/système de flasque, et à l'inverse de l'état de la technique illustré à la figure 1 ou au contraire le flasque avec son rebord 19b qui vient recouvrir le rouleau, maximisant la surface fixe sur laquelle les accumulations de fibres peuvent se déposer. Again, and in order to limit the area of this fixed nook area, the carding roll 3 has a cylindrical end 31, peripherally of the roll, projecting laterally from the side face of said roll, capping a disk of the flange system. 5. The disc D and the cylindrical end 31 can be mounted sealingly by means of a circular seal 6, of the rotary joint type formed between the outer diameter of the disk D, on the one hand, and the internal diameter of the cylindrical end 31 of the roller 3, on the other hand. In other words, the roller 3 is to cap the flange system 5 for sealing the roll / flange system, and unlike the state of the art illustrated in Figure 1 or on the contrary the flange with its flange 19b which covers the roll, maximizing the fixed surface on which the accumulations of fibers can be deposited.
Le système de flasque 5 peut comprendre une gorge périphérique 56, recevant en emboîtement un bord circulaire de la paroi latérale 8 fixe. Cette paroi latérale 8 prolonge le système de flasque 5 en s'étendant jusqu'au capot du carter fermant le carter latéralement. Cette paroi latérale peut être transparente, et constituer une fenêtre de contrôle. The flange system 5 may comprise a peripheral groove 56, receiving in engagement a circular edge of the fixed side wall 8. This side wall 8 extends the flange system 5 extending to the hood of the housing closing the housing laterally. This side wall may be transparent, and constitute a control window.
L'interstice périphérique entre le premier élément de flasque 54 et le deuxième élément d'appui 55 définissant la fente du système de buse 52 peut être incliné en direction de la paroi latérale fixe 8 par rapport à la verticale d'un angle compris entre 2° et 45°, le deuxième élément d'appui 55 étant conformé de sorte à ce que le système de buse 52 vienne lécher la paroi latérale fixe 8. The peripheral gap between the first flange element 54 and the second support element 55 defining the slot of the nozzle system 52 may be inclined towards the fixed lateral wall 8 with respect to the vertical of an angle of between 2 ° and 45 °, the second support element 55 being shaped so that the nozzle system 52 licks the fixed side wall 8.
Comme visible à la figure 3, le deuxième élément d'appui 55 peut ainsi être conformé de sorte à ce que le système de buse 52 se trouve directement dans le prolongement de la paroi latérale fixe 8 sans qu'un rebord sensiblement horizontal ne soit formé par le deuxième élément d'appui 55 dans la zone au niveau de laquelle viendraient s'accumuler des fibres à proximité de la paroi latérale fixe 8. As can be seen in FIG. 3, the second support element 55 can thus be shaped so that the nozzle system 52 is directly in the extension of the fixed lateral wall 8 without a substantially horizontal rim being formed. by the second support member 55 in the area at which fibers would accumulate near the fixed side wall 8.
Ainsi, l'interstice périphérique entre le premier élément de flasque 54 et le deuxième élément d'appui 55, en étant incliné par rapport à la verticale d'un angle compris entre 2° et 45°, notamment 30°, permettant de souffler l'air à la périphérie du rouleau cardant 3 selon une direction sensiblement radiale combiné à l'absence de rebord sensiblement horizontal dans la zone au niveau de laquelle viendraient s'accumuler les fibres à proximité de la paroi latérale fixe 8 permet d'obtenir une évacuation de la totalité des fibres qui viendraient s'accumuler à proximité de la paroi latérale fixe 8. La carde peut encore comprendre une buse 7 et des moyens 70 pour alimenter en air ladite buse, ladite buse 7 venant souffler selon une direction axiale, c'est-à-dire parallèle au cylindre, localement au niveau de la zone d'interface Zrc entre le cylindre de cardage 2 et ledit rouleau cardant 3. Thus, the peripheral gap between the first flange element 54 and the second support element 55, being inclined relative to the vertical by an angle of between 2 ° and 45 °, in particular 30 °, to blow the air. The air at the periphery of the carding roll 3 in a substantially radial direction combined with the absence of a substantially horizontal edge in the area at which the fibers would accumulate near the fixed side wall 8 makes it possible to obtain an evacuation. all the fibers that would accumulate near the fixed side wall 8. The card may further comprise a nozzle 7 and means 70 for supplying air to said nozzle, said nozzle 7 blowing in an axial direction, that is to say parallel to the cylinder, locally at the interface zone Zrc between the carding cylinder 2 and said carding roll 3.
Une telle buse 7 est distincte du système de flasque 5 : elle est positionnée latéralement au rouleau (et au cylindre) pour que son flux d'air repéré fa soit dirigé axialement, au niveau de la zone d'interface Zrc. Ce flux fa, de débit maîtrisé constitue une barrière active qui interdit aux fibres de s'échapper de cette interface latéralement. Le débit d'air de cette buse 7 peut être contrôlé par un moyen de réglage de débit des moyens 70, tel qu'une vis- pointeau. Il s'agit d'un moyen de réglage individuel. Cette buse 7 peut être située de l'autre côté de la paroi latérale 8 par rapport au cylindre et au rouleau : le flux de la buse traverse un orifice 80 de la paroi latérale avant d'atteindre la zone d'interface Zrc. La carde peut encore comporter pour chaque cylindre de cardage un flasque latéral fixe Fcyl, recouvrant la face latérale du cylindre de cardage 2 coopérant de manière étanche avec l'extrémité cylindrique périphérique dudit cylindre de cardage 2. Such a nozzle 7 is distinct from the flange system 5: it is positioned laterally to the roller (and to the cylinder) so that its air flow is directed axially at the interface zone Zrc. This controlled flow rate is an active barrier which prevents the fibers from escaping from this interface laterally. The air flow of this nozzle 7 can be controlled by means of flow control means 70, such as a needle screw. This is a means of individual adjustment. This nozzle 7 can be located on the other side of the side wall 8 with respect to the cylinder and the roller: the flow of the nozzle passes through an orifice 80 of the side wall before reaching the interface zone Zrc. The card may also comprise for each carding cylinder a fixed lateral flange Fcyl, covering the lateral face of the carding cylinder 2 sealingly cooperating with the peripheral cylindrical end of said carding cylinder 2.
La chambre latérale formée entre la face latérale d'un cylindre de cardage 2 et le flasque fixe Fcyl n'est de préférence pas alimentée en air. Ceci permet d'éviter le second problème mentionné dans l'introduction illustré à la figure 10 lorsque deux cylindres consécutifs mettent en œuvre le procédé selon le document EP 1 612 304 Al. The lateral chamber formed between the lateral face of a carding cylinder 2 and the fixed flange Fcyl is preferably not supplied with air. This makes it possible to avoid the second problem mentioned in the introduction illustrated in FIG. 10 when two consecutive cylinders implement the method according to document EP 1 612 304 A1.
Cette figure 10 est une vue de coupe vue partielle d'une carde selon un plan passant par les axes de rotation de deux cylindres consécutifs de la carde, tels que le cylindre de transfert et le cylindre du grand tambour. Selon le procédé du document EP 1 612 304 Al et pour ces deux cylindres, on forme une chambre latérale E" ou E" ' entre la face latérale du cylindre et un flasque latéral fixe, et on alimente cette chambre E" ou E" ' en air. La mise en surpression de la chambre E" ou E" ' donne naissance à des flux d'air radiaux formant une barrière active sensée interdire les entrées de fibres textiles. This FIG. 10 is a partial sectional view of a card in a plane passing through the axes of rotation of two consecutive rolls of the card, such as the transfer cylinder and the cylinder of the large drum. According to the method of document EP 1 612 304 A1 and for these two cylinders, a lateral chamber E "or E" 'is formed between the lateral face of the cylinder and a fixed lateral flange, and this chamber E "or E" is supplied with power. in air. The overpressure of the chamber E "or E" 'gives rise to radial air flows forming a sensible active barrier prohibit entry of textile fibers.
Toutefois, au niveau de la zone de reprise visible à la figure 10 pour laquelle ces deux cylindres sont intimement proches, l'air s 'échappant radialement à la périphérie de la chambre latérale E" (associée par exemple au cylindre de transfert) est, au niveau de cette zone de reprise, en conflit immédiat avec l'air s'échappant radialement à la périphérie de la chambre latérale E" ' (associée au cylindre de cardage). Sauf à pouvoir équilibrer parfaitement les pressions, la chambre latérale localement de plus forte pression (repérée E" à la figure 10) prend le dessus sur la chambre localement de moindre pression (repérée E" ' à la figure 10), donnant naissance à une aspiration locale dans la chambre repérée E' ", au niveau de la zone de reprise. Selon les constatations de l'inventeur il est d'autant plus difficile d'équilibrer ces pressions que ces deux fuites locales correspondent chacune à une partie non maîtrisée de flux total alimentant la chambre latérale correspondante. However, at the recovery zone visible in Figure 10 for which these two cylinders are intimately close, the air escaping radially at the periphery of the Lateral chamber E "(associated for example with the transfer cylinder) is, at this recovery zone, in immediate conflict with the air escaping radially at the periphery of the lateral chamber E"'(associated with the carding cylinder ). Except to be able to perfectly balance the pressures, the side chamber of higher pressure locally (marked E "in Figure 10) takes over the chamber locally lower pressure (marked E""in Figure 10), giving rise to a local exhaust in the chamber marked E '", at the level of the area of recovery.According to the findings of the inventor it is all the more difficult to balance these pressures that these two local leaks each correspond to an uncontrolled part of total flow supplying the corresponding lateral chamber.
Par ailleurs, chaque zone de reprise entre deux cylindres est une zone où les cylindres sont intimement rapprochés à leur périphérie, ce qui engendre un écrasement de la couche limite d'air : cet écrasement engendre des flux d'air latéraux ( illustré par la double flèche de la figure 10) dirigés vers les extrémités du cylindre : des fibres textiles sont ainsi entraînées par ces flux d'air latéraux en direction des parties latérales aux cylindres, ces fibres étant alors aspirées dans la chambre latérale localement de plus faible pression. Moreover, each zone of recovery between two cylinders is an area where the cylinders are intimately close to their periphery, which causes a crushing of the air boundary layer: this crushing generates side air flows (illustrated by the double arrow of Figure 10) directed towards the ends of the cylinder: textile fibers are thus driven by these lateral air flows towards the side parts to the rolls, these fibers then being sucked into the side chamber locally lower pressure.
Enfin la carde selon l'invention peut comporter : Finally, the card according to the invention may comprise:
- au moins un carénage 9, disposé fixe en partie inférieure, ou en partie latérale du cylindre de cardage 2, ledit carénage 9 s 'étendant axialement sur toute la longueur du cylindre de cardage 2, la paroi interne du carénage étant agencée à proximité immédiate dudit cylindre de cardage, reprenant la courbure du cylindre sur une fraction angulaire du cylindre, définissant un inter-espace Zcc s'étendant en longueur suivant un arc de cercle dans un plan perpendiculaire au cylindre de cardage,  - At least one fairing 9, fixedly arranged in the lower part, or in the lateral part of the carding cylinder 2, said fairing 9 extending axially over the entire length of the carding cylinder 2, the inner wall of the fairing being arranged in the immediate vicinity said carding cylinder, taking up the curvature of the cylinder on an angular fraction of the cylinder, defining an inter-space Zcc extending in length along an arc of a circle in a plane perpendicular to the carding cylinder,
- au moins un système de soufflage 10 de la zone d' inter-espace Zcc comprenant : at least one blowing system 10 of the inter-space zone Zcc comprising:
- un second flasque latéral Fcar, perpendiculaire à l'axe longitudinal du cylindre et du carénage, fermant latéralement ledit inter-espace Zcc entre le carénage 9 et le cylindre de cardage 2, comprenant une fente 11 traversante, en regard dudit inter-espace Zcc, - une chambre de répartition d'air 12 au dos du second flasque Fcar, communicant avec ladite fente traversante 11, - des moyens 13 pour alimenter la chambre de répartition d'air en air comprenant un moyen de réglage de débit alimentant ladite chambre de répartition d'air 12. a second lateral flange Fcar, perpendicular to the longitudinal axis of the cylinder and the fairing, laterally closing said inter-space Zcc between the fairing 9 and the carding cylinder 2, comprising a through slot 11 opposite said inter-space Zcc - an air distribution chamber 12 on the back of the second flange Fcar, communicating with said through slot 11, - means 13 for supplying the air distribution chamber with air comprising a flow control means supplying said air distribution chamber 12.
Un tel système de soufflage 10 permet de générer un soufflage d'intensité telle à interdire le transfert de fibres depuis l'inter-espace Zcc vers les parties latérales au cylindre, tout en évitant une surintensité de soufflage. De préférence, deux systèmes de soufflage sont prévus aux deux extrémités longitudinales du carénage, et de manière à bloquer les fibres aux deux extrémités longitudinales de l'inter-espace Zcc. On évite ainsi le premier problème identifié par l'inventeur, représenté aux figures 5a et 5b. Such a blowing system 10 makes it possible to generate an intensity blast such as to prohibit the transfer of fibers from the inter-space Zcc to the side portions of the cylinder, while avoiding an overcurrent of blowing. Preferably, two blowing systems are provided at the two longitudinal ends of the fairing, and so as to block the fibers at the two longitudinal ends of the inter-space Zcc. This avoids the first problem identified by the inventor, shown in Figures 5a and 5b.
La figure 5a représente la chambre latérale repérée E", délimitée entre, d'une part, la face latérale du cylindre, et le flasque latéral F' et le carénage C (éléments fixes), d'autre part, qui est étanche au niveau de la jonction entre le carénage C et le flasque latéral F', par exemple grâce à l'utilisation d'un joint d'étanchéité repérée J'. Cette chambre latérale E" est mise en surpression par une source d'air extérieur à la chambre ce qui crée un flux d'air FI', remontant axialement au niveau de la zone d'inter-espace entre le carénage et le cylindre. FIG. 5a shows the lateral chamber marked E "delimited between, on the one hand, the lateral face of the cylinder, and the lateral flange F 'and the fairing C (fixed elements), on the other hand, which is watertight at the junction between the fairing C and the side flange F ', for example by using a seal marked J' This side chamber E "is put under overpressure by a source of air outside the chamber which creates an air flow FI ', rising axially at the inter-space between the fairing and the cylinder.
Selon les constatations de l'inventeur, le débit d'air local du flux FI' en cette zone d'étanchéité s'échappant de la chambre latérale E" n'est pas déterminé en ce qu'il est constitué par une partie non maîtrisée du flux d'air total alimentant la chambre latérale E" : bien souvent ce flux FI' est trop important en cette zone d'étanchéité : les pertes de charge étant plus grandes dans le sens axial du cylindre le long de l'inter-espace, ce flux d'air a tendance à ressortir par les bords longitudinaux du carénage, et comme illustré par les flux repérés F2' et F3' de la figure 5b, entraînant avec lui des fibres textiles qui tomberont au sol. Le système de soufflage 10 de la zone d'inter-espace Zcc permet d'éviter une telle surintensité de soufflage, en ce que la fente 11 du second flasque Fcar est localisée uniquement au droit de cette zone d'inter-espace Zcc, au niveau de l'extrémité longitudinale du carénage 9, et en ce que le flux d'air traversant cette fente 11 peut être contrôlé précisément par le moyen de réglage de débit du type vis-pointeau ou système équivalent. According to the findings of the inventor, the local air flow of the flow FI 'in this sealing zone escaping from the lateral chamber E "is not determined in that it consists of an uncontrolled part the total air flow supplying the lateral chamber E ": very often this flow FI 'is too important in this sealing zone: the pressure losses being greater in the axial direction of the cylinder along the inter-space this flow of air tends to emerge through the longitudinal edges of the fairing, and as illustrated by the marked flow F2 'and F3' of Figure 5b, bringing with it textile fibers that will fall to the ground. The blowing system 10 of the inter-space zone Zcc makes it possible to avoid such an overcurrent of blowing, in that the slot 11 of the second flange Fcar is located only at the right of this inter-space zone Zcc, at the level of the longitudinal end of the fairing 9, and in that the flow of air passing through this slot 11 can be precisely controlled by the flow control means of the screw-needle type or equivalent system.
Il est ici encore à remarquer qu'un tel système de soufflage 10 de la zone d' inter-espace Zcc entre le cylindre et le carénage répondant au premier problème identifié par l'inventeur est indépendant du système de flasque, repéré 5, qui permet lui de résoudre le troisième problème identifié par l'inventeur. Le demandeur se réserve le droit de déposer une demande divisionnaire pour cette invention non revendiquée en tant que telle et qui concerne une carde 1 comprenant un cylindre de cardage 2 et des organes cardants montés à la périphérie du cylindre de cardage, It should again be noted here that such a blowing system 10 of the inter-space zone Zcc between the cylinder and the fairing corresponding to the first problem identified by the inventor is independent of the flange system, identified 5, which allows him to solve the third problem identified by the inventor. The applicant reserves the right to file a divisional application for this invention not claimed as such and which relates to a card 1 comprising a carding cylinder 2 and carding members mounted at the periphery of the carding cylinder,
ladite carde comprenant : said card comprising:
- au moins un premier flasque latéral fixe Fcyl, recouvrant la face latérale du cylindre de cardage 2 coopérant de manière étanche avec l'extrémité cylindrique périphérique dudit cylindre de cardage 2, at least one first fixed lateral flange Fcyl, covering the lateral face of the carding cylinder 2 sealingly cooperating with the peripheral cylindrical end of said carding cylinder 2,
- au moins un carénage 9, disposé fixe en partie inférieure ou latérale du cylindre de cardage 2, ledit carénage 9 s 'étendant axialement sur toute la longueur du cylindre de cardage 2, la paroi interne du carénage étant agencée à proximité immédiate dudit cylindre de cardage, reprenant la courbure du cylindre sur une fraction angulaire du cylindre, définissant un inter-espace Zcc s'étendant en longueur suivant un arc de cercle dans un plan perpendiculaire au cylindre de cardage, - At least one fairing 9, fixedly arranged in the lower or side portion of the carding cylinder 2, said fairing 9 extending axially over the entire length of the carding cylinder 2, the inner wall of the fairing being arranged in the immediate vicinity of said cylinder of carding, taking up the curvature of the cylinder over an angular fraction of the cylinder, defining an inter-space Zcc extending in length along an arc of a circle in a plane perpendicular to the carding cylinder,
- au moins un système de soufflage 10 de la zone d' inter-espace Zcc comprenant : at least one blowing system 10 of the inter-space zone Zcc comprising:
-un second flasque latéral Fcar, perpendiculaire à l'axe longitudinal du cylindre et du carénage, fermant latéralement ledit inter-espace Zcc entre le carénage 9 et le cylindre de cardage 2, comprenant une fente 11 traversante, en regard dudit inter-espace Zcc,  a second lateral flange Fcar, perpendicular to the longitudinal axis of the cylinder and the fairing, laterally closing said inter-space Zcc between the fairing 9 and the carding cylinder 2, comprising a through slot 11 opposite said inter-space Zcc ,
- une chambre de répartition d'air 12 au dos du second flasque Fcar, communicant avec ladite fente traversante 11,  an air distribution chamber 12 on the back of the second flange Fcar, communicating with said through slot 11,
- des moyens 13 pour alimenter la chambre de répartition d'air en air comprenant un moyen de réglage de débit alimentant ladite chambre de répartition d'air 12. Comme illustré à la figure 9, on remarque le second flasque Fcar est situé de préférence dans le prolongement du premier flasque Fcy. De préférence, deux systèmes de soufflage sont prévus aux deux extrémités longitudinales du carénage, et de manière à bloquer les fibres aux deux extrémités longitudinales de l'inter-espace Zcc. - means 13 for supplying the air distribution chamber with air comprising a flow control means supplying said air distribution chamber 12. As illustrated in FIG. 9, the second flange Fcar is preferably located in the extension of the first flange Fcy. Preferably, two blowing systems are provided at the two longitudinal ends of the fairing, and so as to block the fibers at the two longitudinal ends of the inter-space Zcc.
NOMENCLATURE NOMENCLATURE
Invention (Figures 2 à 4 et 6 à 9 et 11): Invention (Figures 2 to 4 and 6 to 9 and 11):
I. Carde,  I. Carde,
2. Cylindre de cardage (notamment premier cylindre de cardage 2a ou deuxième cylindre de cardage 2c), 2. Cylinder card (including first carding cylinder 2a or second carding cylinder 2c),
2b. Cylindre de transfert, 2b. Transfer cylinder,
2d. 2f. Cylindre peigneur, 2d. 2 F. Compression cylinder,
21. Cylindre briseur, 21. Breaker cylinder,
3. Rouleau cardant (notamment rouleau balayeur 3a ou rouleau travailleur 3b) 3. Rolling card (in particular roller brush 3a or roller worker 3b)
30. Arbre support (rouleau 3),  30. Support shaft (roll 3),
31. Extrémité cylindrique saillante (rouleau 3)  31. Projecting cylindrical end (roll 3)
3c. Rouleau alimentaire, 3c. Food roll,
3d. Rouleau détacheur,  3d. Release roller,
4. Paliers (rotation entre le rouleau et le bâti), 4. Bearings (rotation between the roll and the frame),
5. Système de flasque, 5. Flange system,
50. Cavité (système de flasque),  50. Cavity (flange system),
51. Moyens externes d'alimentation en air,  51. External means of supplying air,
52. Système de buse,  52. Nozzle system,
53. Organe d'obturation, 53. Shut-off device,
54, 55, premier élément de flasque et deuxième élément d'appui dudit système de flasque, assemblé l'un à l'autre,  54, 55, first flange element and second support element of said flange system, assembled to one another,
56. Gorge périphérique recevant en emboîtement la paroi latérale 8,  56. Peripheral groove receiving the lateral wall 8 interlocking,
57. Organe de réglage de débit  57. Flow control device
6. Etanchéité entre le système de flasque, élément fixe, et le rouleau cardant, rotatif,6. Sealing between the flange system, fixed element, and the rotary, carding roll,
7. Buse destinée à souffler axialement au niveau de la zone d'interface le cylindre de cardage et le rouleau cardant, 7. Nozzle intended to blow axially at the interface zone the carding cylinder and the carding roll,
70. Moyens d'alimentation en air (buse 7),  70. Air supply means (nozzle 7),
8. Paroi latérale fixe prolongeant le système de flasque,  8. Fixed side wall extending the flange system,
80. Orifice de paroi latérale destiné à être traversé par le jet d'air de la buse, 80. Side wall orifice intended to be traversed by the air jet of the nozzle,
9. Carénage (notamment carénage 9a ou 9b),  9. Fairing (in particular fairing 9a or 9b),
10. Système de soufflage de la zone d'interface,  10. Blowing system of the interface area,
I I. Fente traversante, 12. Chambre de répartition d'air, I. Through slit, 12. Air distribution chamber,
13. Moyens,  13. Means,
101, 102, 103. Hottes aspirantes 101, 102, 103. Extractor hoods
Fcyl. Premier Flasque latéral cylindre, fixe, (cylindre de cardage), Fcyl. First flange side cylinder, fixed, (carding cylinder),
Fcar. Deuxième Flasque latéral, solidaire de l'extrémité du carénage, fermant latéralement la zone d'interface entre le carénage et la paroi périphérique du cylindre,  FcAr. Second lateral flange, integral with the end of the fairing, laterally closing the interface zone between the fairing and the peripheral wall of the cylinder,
Zcc. Zone d'inter-espace entre le carénage et le cylindre de cardage, Zcc. Inter-space zone between the fairing and the carding cylinder,
Zrc Zone d'interface entre le cylindre de cardage et le rouleau cardant, Zrc Interface zone between the carding roll and the carding roll,
D. Disque (système de flasque). D. Disk (flange system).
Etat de la technique (Figures 1, 5a, 5b et 10): State of the art (Figures 1, 5a, 5b and 10):
Figure 1 : Figure 1 :
Ac' . Accumulation de fibres, Ac '. Fiber accumulation,
E'. Chambre latérale, E '. Side room,
F'. Flasque, F '. Flask,
P' . Palier (guidage en rotation de l'arbre du rouleau),  P '. Bearing (rotating guide of the roller shaft),
3a', 3b'. Rouleau balayeur ou rouleau travailleur, 3a ', 3b'. Roller sweeper or worker roller,
19b' . Rebord flasque. 19b '. Flaccid edge.
Figures 5a et 5b : Figures 5a and 5b:
E" . Chambre latérale, E. Side room,
F" . Flasque latéral fixe, F ". Fixed side flange,
P". Palier, P. "Bearing,
FI'. Flux d'air remontant,  FI. Upward airflow,
C Carénage,  C Fairing,
J' . Joint d'étanchéité. Figure 10 :  J '. Seal. Figure 10:
E" . Chambre latérale localement de plus forte pression au niveau de la zone de reprise entre cylindre, Ε'". Chambre latérale localement de moindre pression au niveau de la zone de reprise entre cylindre. E. Lateral chamber locally stronger pressure at the area of recovery between cylinder, Side chamber locally with less pressure in the area of recovery between the cylinder.

Claims

REVENDICATIONS
1. Carde (1) comprenant un cylindre de cardage (2) et au moins un rouleau cardant (3) monté à la périphérie du cylindre de cardage (2), un arbre support (30) du rouleau cardant (3) étant monté rotatif sur un bâti par l'intermédiaire de paliers (4), de part et d'autre du rouleau cardant (3), présentant au moins deux systèmes de flasques latéraux (5), montés fixes de part et d'autre du rouleau cardant (3), couvrant chacun la face latérale du rouleau cardant, traversés chacun par l'arbre support (30), reliant chacun ledit palier (4) à la périphérie du rouleau cardant (3), dans laquelle chaque système de flasque (5) comprend : Card (1) comprising a carding cylinder (2) and at least one carding roller (3) mounted at the periphery of the carding cylinder (2), a support shaft (30) of the carding roller (3) being rotatably mounted on a frame via bearings (4), on either side of the carding roll (3), having at least two side plate systems (5), fixedly mounted on either side of the carding roll ( 3), each covering the lateral face of the carding roller, each traversed by the support shaft (30), each connecting said bearing (4) to the periphery of the carding roller (3), wherein each flange system (5) comprises :
- une cavité (50), interne audit système de flasque,  a cavity (50), internal to said flange system,
- des moyens externes (51) pour alimenter en air ladite cavité,  external means (51) for supplying air to said cavity,
- un système de buse (52) convenant pour souffler la zone périphérique fixe dudit système de flasque, au moins à sa partie supérieure, à partir de l'air de ladite cavité, caractérisé en ce que le système de flasque (5) présente deux éléments circulaires, assemblés l'un à l'autre, y compris un premier élément de flasque (54) recouvrant la face latérale du rouleau (3), ainsi qu'un deuxième élément d'appui (55) dont le diamètre interne coopère directement ou non avec le palier (4), ladite cavité (50) alimentée en air étant matérialisée au moins en partie par une gorge dudit deuxième élément d'appui (55) débouchant latéralement audit deuxième élément d'appui (55), fermée partiellement par la surface interne du premier élément de flasque (54), opposée à la face externe du premier élément (54) tournée vers le rouleau (3), et de manière à ce que le système de buse (52) résulte d'une fente du système de flasque (5) défini par un interstice périphérique entre ledit premier élément de flasque (54) et ledit deuxième élément d'appui (55).  a nozzle system (52) suitable for blowing the fixed peripheral zone of said flange system, at least at its upper part, from the air of said cavity, characterized in that the flange system (5) has two circular elements, assembled to one another, including a first flange element (54) covering the lateral face of the roller (3), and a second bearing element (55) whose inner diameter cooperates directly or not with the bearing (4), said cavity (50) supplied with air being materialized at least in part by a groove of said second support element (55) opening laterally to said second support element (55) partially closed by the inner surface of the first flange member (54), opposite to the outer face of the first member (54) facing the roll (3), and so that the nozzle system (52) results from a slot of the flange system (5) defined by a gap Rectangular between said first flange member (54) and said second support member (55).
2. Carde selon la revendication 1 dans laquelle la cavité (50) est une chambre annulaire s'étendant au moins en partie autour de l'axe du rouleau cardant (3). 2. A card according to claim 1 wherein the cavity (50) is an annular chamber extending at least partly around the axis of the carding roller (3).
3. Carde selon la revendication 2, dans laquelle le système de buse (52) présente une fente périphérique s'étendant et débouchant de manière continue dans ladite cavité annulaire, assurant un soufflage d'air sur la périphérie dudit système de flasque, sans discontinuité de soufflage, au moins le long de la partie active de la cavité (50) annulaire. 3. A card according to claim 2, wherein the nozzle system (52) has a peripheral slot extending and continuously opening into said annular cavity, providing an air blast on the periphery of said flange system, without discontinuity. blowing, at least along the active portion of the annular cavity (50).
4. Carde selon la revendication 2 ou 3, présentant un organe d'obturation (53) logé partiellement dans ladite cavité (50) annulaire sur une fraction angulaire de ladite cavité annulaire, centrée sur une zone d'interface (Zrc) entre le cylindre de cardage (2) et le rouleau cardant (3), de manière à interdire un soufflage direct dudit système de buse (52) vers le cylindre de cardage (2), selon une direction radiale audit cylindre de cardage (3). 4. A card according to claim 2 or 3, having a closure member (53) partially housed in said annular cavity (50) on an angular fraction of said annular cavity, centered on an interface zone (Zrc) between the cylinder. carding machine (2) and the carding roller (3), so as to prevent direct blow-off of said nozzle system (52) to the carding cylinder (2) in a radial direction to said carding cylinder (3).
5. Carde selon l'une des revendications 2 à 4, dans laquelle lesdits moyens externes (51) pour alimenter en air ladite cavité annulaire alimentent directement la cavité (50) annulaire en une zone de la cavité éloignée d'une zone d'interface (Zrc) entre le cylindre et le rouleau, tel que par exemple diamétralement opposée à ladite zone. 5. The card according to one of claims 2 to 4, wherein said external means (51) for supplying air to said annular cavity directly feed the annular cavity (50) into an area of the cavity remote from an interface zone. (Zrc) between the cylinder and the roller, such as for example diametrically opposed to said zone.
6. Carde selon l'une des revendications 1 à 5, dans laquelle lesdits moyens externes (51) pour alimenter en air ladite cavité (50) annulaire comprennent un organe de réglage de débit (57) du type vis-pointeau convenant pour régler le débit d'air arrivant dans ladite cavité (50). The card according to one of claims 1 to 5, wherein said external means (51) for supplying air to said annular cavity (50) comprises a screw-needle type flow control member (57) suitable for adjusting the air flow arriving in said cavity (50).
7. Carde selon l'une des revendications 1 à 6, dans laquelle le rouleau cardant (3) présente une extrémité cylindrique (31), en périphérie du rouleau, saillante latéralement de la face latérale dudit rouleau, venant coiffer un disque du système de flasque (5), le disque (D) et l'extrémité cylindrique étant montés de manière étanche grâce à une étanchéité circulaire (6) réalisée entre le diamètre externe du disque (D) du système de flasque, d'une part, et le diamètre interne de l'extrémité cylindrique (31), d'autre part. 7. Card according to one of claims 1 to 6, wherein the carding roller (3) has a cylindrical end (31), peripherally of the roller, projecting laterally from the side face of said roller, to cap a disk of the system. flange (5), the disk (D) and the cylindrical end being sealingly mounted by a circular seal (6) formed between the outer diameter of the disc (D) of the flange system, on the one hand, and the inner diameter of the cylindrical end (31), on the other hand.
8. Carde selon l'une des revendications 1 à 7, présentant une buse (7) et des moyens (70) pour alimenter en air ladite buse, ladite buse (7) venant souffler selon une direction axiale, localement au niveau de la zone d'interface (Zrc) entre le cylindre de cardage (2) et ledit rouleau cardant (3). 8. Card according to one of claims 1 to 7, having a nozzle (7) and means (70) for supplying air to said nozzle, said nozzle (7) blowing in an axial direction, locally at the zone level. interface (Zrc) between the carding cylinder (2) and said carding roll (3).
9. Carde selon l'une des revendications 1 à 8, dans lequel le système de flasque (5) est prolongé par une paroi latérale fixe (8), fermant un carter de la carde latéralement, s'étendant jusqu'au capot du carter. 9. Card according to one of claims 1 to 8, wherein the flange system (5) is extended by a fixed side wall (8), closing a cardboard housing laterally, extending to the hood of the housing .
10. Carde selon la revendication 9, dans lequel l'interstice périphérique entre le premier élément de flasque (54) et le deuxième élément d'appui (55) définissant la fente du système de buse (52) est incliné en direction de la paroi latérale fixe (8) par rapport à la verticale d'un angle compris entre 2° et 45°, le deuxième élément d'appui (55) étant conformé de sorte à ce que le système de buse (52) vienne lécher la paroi latérale fixe (8). The card according to claim 9, wherein the peripheral gap between the first flange member (54) and the second support member (55) defining the slot of the nozzle system (52) is inclined towards the wall. fixed lateral side (8) with respect to the vertical angle of between 2 ° and 45 °, the second support element (55) being shaped so that the nozzle system (52) comes to lick the side wall fixed (8).
11. Carde selon la revendication 10, dans lequel le système de flasque (5) comprend une gorge périphérique (56), recevant en emboîtement un bord de la paroi latérale fixe (8). 11. The card according to claim 10, wherein the flange system (5) comprises a peripheral groove (56), receiving interlocking an edge of the fixed side wall (8).
12. Carde selon l'une des revendications 1 à 11, comportant : Card according to one of Claims 1 to 11, comprising:
- un premier flasque latéral fixe (Fcyl), recouvrant la face latérale du cylindre de cardage (2) coopérant de manière étanche avec l'extrémité cylindrique périphérique dudit cylindre de cardage (2),  a first fixed lateral flange (Fcyl) covering the lateral face of the carding cylinder (2) sealingly cooperating with the peripheral cylindrical end of said carding cylinder (2),
- au moins un carénage (9), disposé fixe en partie inférieure ou latérale du cylindre de cardage (2), ledit carénage (9) s'étendant axialement sur toute la longueur du cylindre de cardage (2), la paroi interne du carénage étant agencée à proximité immédiate dudit cylindre de cardage, reprenant la courbure du cylindre sur une fraction angulaire du cylindre, définissant un inter-espace (Zcc) s'étendant en longueur suivant un arc de cercle dans un plan perpendiculaire au cylindre de cardage,  - At least one fairing (9), fixedly arranged at the bottom or side of the carding cylinder (2), said fairing (9) extending axially along the entire length of the carding cylinder (2), the inner wall of the fairing being arranged in the immediate vicinity of said carding cylinder, taking up the curvature of the cylinder on an angular fraction of the cylinder, defining an inter-space (Zcc) extending in length along an arc of a circle in a plane perpendicular to the carding cylinder,
- un système de soufflage (10) de la zone d' inter-espace (Zcc) comprenant : a blowing system (10) of the inter-space zone (Zcc) comprising:
-un second flasque latéral (Fcar), perpendiculaire à l'axe longitudinal du cylindre et du carénage, fermant latéralement ledit inter-espace (Zcc) entre le carénage (9) et le cylindre de cardage (2), comprenant une fente (11) traversante, en regard dudit inter-espace (Zcc),  a second lateral flange (Fcar), perpendicular to the longitudinal axis of the cylinder and the fairing, laterally closing said inter-space (Zcc) between the fairing (9) and the carding cylinder (2), comprising a slot (11); ) crossing, opposite said inter-space (Zcc),
- une chambre de répartition d'air (12) au dos du second flasque (Fcar), communicant avec ladite fente traversante (11),  - an air distribution chamber (12) on the back of the second flange (Fcar), communicating with said through slot (11),
- des moyens (13) pour alimenter la chambre de répartition d'air en air comprenant un moyen de réglage de débit alimentant ladite chambre de répartition d'air (12).  - Means (13) for supplying the air distribution chamber with air comprising a flow control means supplying said air distribution chamber (12).
13. Procédé pour réduire l'accumulation de fibres dans les parties latérales d'un rouleau rotatif d'une carde selon l'une quelconque des revendications 1 à 12, dans lequel on alimente en air la cavité de chaque système de flasque de manière à mettre œuvre un soufflage radial, au moins sur la partie supérieure périphérique fixe du système de flasque. 13. A method for reducing the accumulation of fibers in the side portions of a rotary roller of a card according to any one of claims 1 to 12, wherein the cavity of each flange system is supplied with air so as to radially blowing, at least on the fixed peripheral upper part of the flange system.
14. Procédé selon la revendication 13, mis en œuvre dans une carde selon la revendication 9, dans lequel on alimente en air deux buses (7) situées aux deux extrémités de la zone d'interface, chacune soufflant selon une direction axiale, localement au niveau de la zone d'interface (Zrc) entre le cylindre de cardage (2) et ledit rouleau cardant (3). 14. The method of claim 13, implemented in a card according to claim 9, wherein is supplied with air two nozzles (7) at both ends of the interface zone, each blowing in an axial direction, locally at level of the interface zone (Zrc) between the carding cylinder (2) and said carding roll (3).
15. Procédé selon la revendication 13 ou 14, mis en œuvre dans une carde selon la revendication 12, dans lequel on alimente en air deux systèmes de soufflage (10) de la zone d' inter-espace (Zcc) de manière à engendrer un soufflage localisé au niveau de la zone d'inter espace entre le cylindre de cardage et le carénage, aux deux extrémités longitudinales dudit inter-espace (Zcc). 15. The method of claim 13 or 14, implemented in a card according to claim 12, wherein is supplied to air two blowing systems (10) of the inter-space region (Zcc) so as to generate a localized blowing at the inter-space zone between the carding cylinder and the fairing, at the two longitudinal ends of said inter-space (Zcc).
EP17727290.3A 2016-05-11 2017-05-10 Card comprising a flange system that reduces the build-up of fibres Withdrawn EP3455397A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1654198A FR3051199B1 (en) 2016-05-11 2016-05-11 CARD EQUIPPED WITH A SYSTEM OF FLASKS REDUCING FIBER ACCUMULATIONS
PCT/FR2017/051114 WO2017194878A1 (en) 2016-05-11 2017-05-10 Card comprising a flange system that reduces the build-up of fibres

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CN108070922A (en) * 2018-01-17 2018-05-25 恒天重工股份有限公司 It is a kind of to be suitable for solving the device that Exploration for Air Pressure Hopper of Cotton Feeder hired roughneck end twines fiber

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CH390746A (en) * 1961-09-08 1965-04-15 Rieter Ag Maschf End ring for the frontal sealing of rotating rollers against adjacent, fixed bearings in spinning machines
JP2538425Y2 (en) * 1992-10-13 1997-06-18 株式会社日機 Roller type card machine
DE19707074A1 (en) * 1997-02-22 1998-08-27 Novibra Gmbh Open end spinner sliver loosening unit
FR2872521B1 (en) * 2004-06-30 2006-12-01 Thibeau Soc Par Actions Simpli METHOD FOR REDUCING THE ACCUMULATION OF FIBERS IN THE SIDE PARTS OF A CARD CYLINDER, AND CARD EQUIPPED WITH MEANS FOR CARRYING OUT SAID METHOD
CN101509158B (en) * 2009-03-24 2010-10-06 常熟市伟成非织造成套设备有限公司 Ray flower blowing apparatus of carding machine

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