EP1383948B1 - Method for rectilinear combing and rectilinear combing machine therefor - Google Patents

Method for rectilinear combing and rectilinear combing machine therefor Download PDF

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Publication number
EP1383948B1
EP1383948B1 EP02730375A EP02730375A EP1383948B1 EP 1383948 B1 EP1383948 B1 EP 1383948B1 EP 02730375 A EP02730375 A EP 02730375A EP 02730375 A EP02730375 A EP 02730375A EP 1383948 B1 EP1383948 B1 EP 1383948B1
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EP
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Prior art keywords
circular comb
combing
comb
needles
teeth
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EP02730375A
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German (de)
French (fr)
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EP1383948A2 (en
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N Schlumberger SAS
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N Schlumberger SAS
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/10—Construction, mounting, or operating features of combing elements
    • D01G19/105—Combing cylinders

Definitions

  • the present invention relates to the field of the textile industry, in particular the rectilinear combers and relates to a combing process and a combing machine for carrying out this method.
  • the combing cycle of modern rectilinear combers which are derived from models dating back to the middle of the 19 th century, is well known and can be broken down into two phases, the first of which is called combing of the fiber heads and the second of combing the tails of fibers.
  • the combing phase of the fiber heads occurs when the clamp is closed, while the combing phase of the fiber tails occurs at the time of tearing, when the clamp is open.
  • the combing phase of the fiber heads is carried out by a segment of needles or teeth arranged on a part of the periphery of a rotary cylinder, commonly called a circular comb, whereas the combing phase of the fiber tails is carried out by a comb commonly called fixed or straight comb.
  • the circular comb whose axis of rotation is fixed relative to the frame of the machine, performs a complete revolution per machine cycle.
  • This circular comb is a cylinder, a part of the periphery of which is provided with a segment filled with needles or teeth with increasing density relative to the direction of rotation of the cylinder and which will be used to clean the fiber heads exceeding of the pliers during the combing phase of the heads.
  • the speed of the circular comb is successively accelerated and then slowed down during a complete cycle of the machine.
  • the other part of the periphery of the cylinder is not provided with needles but is smooth and recessed because the presence of needles on this part of the cylinder is not necessary at the time of pulling and the fact that space must be provided for the mechanical elements in motion during the tearing operation.
  • the needles of the circular comb can be mounted only on a part only of the surface of the cylinder which carries them ( FR-A-2 114 192 ) and, on the other hand, there is a risk of collision between the circular comb and the lower clamp jaw, which is part of mechanical movements, during the tearing operation ( EP-A-0 936 292 ).
  • the segment is usually filled with needles of increasing density ( FR-A-1 209 191 ), so as to ensure progressive combing of the fiber heads.
  • the first needle bars are filled with needles of large dimensions and widely spaced while the last needles are trimmed needles thinner and tight.
  • the circular comb needle segment is cleaned by a cylindrical brush ( FR-A-2,651,512 ) which is itself broken by a doffer cylinder, which is in turn discharged by a beating comb.
  • the rotational speed of the cylindrical brush whose direction of rotation is opposite to that of the circular comb, is greater than that of the circular comb.
  • the impurities preferentially accumulate between the first needles or teeth brought into contact with the textile material and then between needles or teeth the finest and the tightest. This results in a gradual degradation of the cleanliness of the combed ribbons.
  • the object of the present invention is to overcome these drawbacks by proposing a new rectilinear combing method and a new rectilinear combing machine implementing this method, allowing an improvement of the combing qualities, as well as the cleaning of the comb.
  • the invention relates to a rectilinearly combing method and a rectilinear combing machine as described in the independent claims.
  • the figure 1 appended drawings shows a rectilinear combing machine comprising a food comb 1 associated with a food grid 2, a clamp 3 formed by an upper jaw 4 cooperating with a lower jaw 5, a sheet between clamp 6, a circular comb 7, filled with needles or teeth 8, whose rotation speed is continuous and which is mounted on a support shaft 9, whose position is fixed relative to the frame 10 of the machine, a cylindrical brush 11 furnished with bristles, a doffer 12 filled with metal tips, a flapper 13, a carriage 14 supporting torn cylinders 15 and 16, a rod 17, a moving element 18, a tear-off sleeve 19, a tension cylinder 20 and a fixed comb 21 secured to a lever articulated 22.
  • this straight combing machine uses a rectilinear combing process which consists essentially of combing the fiber heads with the aid of a circular comb 7, lined with needles or teeth 8 distributed over at less than 60% of its periphery, said circular comb 7 performing a non-integer number of rotational revolutions N per machine cycle.
  • the active arc of the comb 7, corresponding to the length of the needle or tooth lining 8 used during the combing phase of the fiber heads, is out of phase with a machine cycle. the other.
  • the rectilinear combing method can also consist essentially of combing the fiber heads using a circular comb 7, lined with needles or teeth 8 distributed over at least 60% of its periphery, said circular comb 7 performing an integer number of rotational revolutions N per machine cycle.
  • the circular comb 7 can perform at least one turn of rotation N per machine cycle.
  • the combing of the fiber heads by the circular comb 7 is advantageously carried out during a rotation of the latter between 0.7 and 1.5 turns.
  • the combing of the fiber heads may preferably be performed for less than one complete turn of rotation of the circular comb 7.
  • the circular comb 7 is a cylinder packed on at least 60% of its periphery with needles or teeth 8, with identical or different characteristics, a cylinder whose speed of rotation is continuous and adjustable and which is mounted on a support shaft 9, whose position is fixed relative to the frame 10 of the machine, this comb 7 performing a non-integer or whole number of turns per machine cycle.
  • FIG. 1 The accompanying drawings show the straight-edge Congressr according to the invention, in tearing phase, this combing machine comprising a feeding device, a pulling device, a fiber head cleaning device and a tail cleaning device. fibers.
  • the feed device is constituted by the food comb 1, which is associated with a food grid 2, by a clamp 3 formed by an upper jaw 4 cooperating with a lower jaw 5 and by a sheet between clamp 6.
  • the textile material is moved by the feed device thus formed to be brought into contact with the fiber head cleaning device, which perform the combing phase of said fiber heads.
  • the textile material passes between the food comb 1 and the food grid 2, which are movable in such a way that they can be separated from one another and that they can be moved together, or in the direction of movement of the the textile material, in the opposite direction of the movement of the textile material.
  • the comb 1 deviates from the grid 2, then the comb and the grid recoil together, the comb is then close to the grid and the comb needles cross the textile material.
  • this set thus constituted advances in training with him the textile material, so as to present the fiber heads 23 ( figure 2 ) to the cleaning device of the fiber heads and to supply a new fiber fringe.
  • the clamp 3 closes and the lower jaw 5, which is articulated to the frame 10 of the machine, is lowered so as to approach the cleaning device of the fiber heads.
  • the upper jaw 4, which is also articulated to the frame of the machine, is lowered, in order to get closer to the lower jaw 5, until it comes into contact with it to pinch the fibers located between the two jaws 4 and 5 and to retain them, then the upper jaw 4 continues its movement towards the cleaning device of the fiber heads and carries with it the lower jaw 5. This movement of the lower jaw to the circular comb 7 is carried out gradually.
  • the combing phase of the fiber heads then begins and is carried out by the fiber head cleaning device, which is constituted by the circular comb 7, in the form of a cylinder packed on at least 60% of its periphery with needles or teeth 8 and whose rotational speed is continuous and adjustable, this comb being mounted on a support shaft 9, whose arrangement is fixed relative to the frame 10 of the machine.
  • This cleaning device further comprises a cylindrical brush 11 furnished with bristles, a doffer 12 furnished with metal tips and a flapper comb 13.
  • the needles or the teeth 8 of the circular comb 7 penetrate into the fiber heads 23 presented by the clamp 3 and remove the short fibers and the impurities ( figure 2 ).
  • the cylindrical brush 11, whose bristles interpenetrate in the needles or in the teeth 8 of the circular comb 7, rotates faster than said circular comb 7, but in the opposite direction, so as to remove short fibers and impurities transported by the needles or teeth 8 of the circular comb 7 and so as to keep it clean.
  • the doffer rotates less rapidly than the cylindrical brush 11 and in the opposite direction of said cylindrical brush 11 and its points are flush with the bristles of the latter and discharge said bristles of said cylindrical brush 11 short fibers and impurities transported by the brush.
  • the flapper comb 13 of the fiber head cleaning device is a blade which is oscillated near the tips of the doffer 12, this blade being responsible for clearing the tips of the doffer 12 short fibers and impurities they carry. Short fibers and the impurities constitute the blush, which is recovered by gravity and / or by suction for its evacuation.
  • the textile material is then moved by the feeder to be brought into contact with the stripping device and with the fiber queues cleaning device, these devices performing the stripping and cleaning phases of the fiber tails.
  • the pulling device comprises in particular a carriage 14, a rod 17, a moving element 18, a pair of tearing cylinders 15 and 16, a pulling sleeve 19 and a tensioning cylinder 20 (FIG. figure 1 ).
  • the carriage 14 is a lever, whose lower end is articulated by a bearing 24 on the frame 10 of the machine and whose upper end is articulated, via a bearing 25, to the moving assembly 18
  • the rod 17 is a lever, whose lower end is articulated by means of a bearing 26 to the frame 10 of the machine and whose upper end is articulated, via a bearing 27, to the moving element 18.
  • the moving element 18 is constituted by two integral parts sliding on one another, not shown in the accompanying drawing, one of which supports the bearing 25 of the upper articulation of the carriage 14. and the other supports the high articulation 27 of the rod 17.
  • the carriage 14 is animated by an oscillation movement around its lower articulation 24 via a lever (not shown) connected to a reciprocating actuating device.
  • the carriage 14 can move between two extreme angular positions separated from one another by a distance commonly called the travel of the carriage. In one of its two extreme positions, the upper end of the carriage 14 is located near the feeder and, in the other extreme position, the moving element 18 is close to a curling box 28 .
  • the carriage 14 supports the lower tearing cylinder 15, which is positively rotated according to a so-called crawl movement law and which is surmounted by the upper tearing cylinder 16, the pulling sleeve 19 being pinched between the pulling cylinders 15 and 16.
  • the moving element 18 supports, in its part close to the curling box 28 the tension cylinder 20 of the tear-off sleeve 19, which is kept under tension by spacing the two sliding parts of the mobile equipment 18.
  • the mobile equipment supports, between the tension cylinder 20 and an outlet funnel 29, a pair of detaching rolls 30a and 30b and, above the tear-off sleeve 19, a sleeve plate 31 and an anti-beard cylinder 32.
  • the upper end of the carriage 14 is located close to the feed device and the tearing cylinders 15 and 16 associated with the pulling sleeve 19 pinch the end of the fiber heads 23 presented. by the feeding device.
  • the clamp 3 is open and the sheet between clamp 6 is advanced in the direction of movement of the fibers, so as to constrain the end of the fiber heads to be between the tearing cylinders 15 and 16. These are rotated so as to extract the fiber heads from the food comb 1 and the carriage 14 is moved to move away from the clamp 3.
  • the device for cleaning the fiber tails has a fixed comb 21 integral with an articulated lever 22.
  • the fixed comb 21 is approached from the fiber heads 23 so that the needles of the fixed comb 21, crossing the material, remove the impurities during movement of the material by the pulling device.
  • the impurities thus retained are recovered by gravity and / or by suction by the circular comb 7 and a pneumatic sensor 33.
  • the circular comb 7 is integral with a support shaft, not shown, mounted, with possibility of rotation, cantilevered on the frame 10 of the machine, this frame having, on the side of the free end of the support shaft, an opening allowing lateral extraction of the circular comb.
  • This support shaft is rotated by means of a drive means, such as a notched pinion, a toothed wheel, a smooth pulley or an electric motor, and ensures the axial locking and rotation of the circular comb via stops.
  • This circular comb 7 may be one-piece or multi-part and is formed by a cylinder, the two ends of which are mounted on flanges secured to the support shaft.
  • the support shaft can also be rotatably mounted on two bearings each placed on the frame, on either side of the circular comb.
  • the circular comb 7 is lined with needles or teeth 8 distributed over at least 60% of its periphery ( figure 3a ). In this configuration, the circular comb 7 does not have smooth and recessed portions, as known in the state of the art.
  • the needles or teeth 8 are distributed along the total circumference of the circular comb over at least 60% of said circumference, the areas not lined with needles or teeth being distributed along the entire circumference.
  • the circular comb 7 is lined with needles or teeth 8 over its entire circumference ( figure 3b ).
  • the circular comb is constituted by a cylinder 34 on which are placed the needles or the teeth 8.
  • the circular comb is constituted by several arcuate portions 34 'each provided with teeth or needles 8.
  • the teeth or needles 8 may have identical characteristics ( Figures 3 to 6 ) or different, or are arranged in a repetitive sequence ( Figures 7 to 9 ).
  • the tips of the needles or teeth 8 of the circular comb 7 are not necessarily all located on the same radius or the same generatrix of the circular comb 7.
  • said tips of the needles or teeth 8 of the circular comb 7 are arranged on cylinders envelopes of different radii. Such an arrangement makes it possible to obtain differences in height between two teeth or needles or rows of teeth or groups of rows of successive teeth, so as to further improve cleaning.
  • the teeth or needles of the circular comb 7 are made by winding, at a winding angle of between 55 ° and 125 ° with respect to the axis of the circular comb 7, one or more serrated threads 35, with turns joined with characteristics A, B, C, D, etc ... identical or different or whose sequences are repeated periodically.
  • the circular comb is preferably made by winding at least one toothed wire with contiguous turns around a cylinder, in the manner of a carding drum.
  • each toothed wire may have different characteristics such as, for example, the density, that is to say the distance separating two consecutive peaks, or the thickness of the wire. , or the shape of the teeth.
  • the circular comb When the circular comb is made by winding one or more serrated threads around a cylinder, it will be chosen, in order to clean it thoroughly, a trim cleaning device of the type used for card drums and an example of which is known by FR-A-2,705,367 .
  • the circular comb can be made by stacking sheets cut in the form of circular rings 36, the outer periphery of which is provided with identical teeth or with different characteristics A, B , C, etc ... or arranged in a repetitive sequence and whose inner periphery is provided with holding means for centering, driving in rotation and fixing said crowns ( figure 7 ).
  • the teeth or needles 8 of the circular comb 7 may have an identical density over the entire periphery of said circular comb 7 or different densities, for example by arrangement along contiguous lines of needles or teeth 8 of different densities.
  • the figure 10a appended schematic drawings represents a complete cycle of 360 degrees of rotation of a rectilinear combing machine of known type.
  • the combing phase of the fiber heads is designated “a” and the combing angle of the heads associated with the phase “a” is designated “ ⁇ ".
  • the angle "a” corresponds to the fraction of the cycle of the machine during which the combing of the fiber heads is performed. This angle of combing heads is commonly of the order of 130 degrees.
  • the figure 10b schematically represents the rotational movement of a circular comb during a complete cycle of rotation usual on conventional rectilinear combers.
  • this comb lining angle is of the order of 160 to 220 degrees.
  • the circular comb performing exactly one revolution per cycle of the machine, the angular speed of rotation of the comb is increased and then decreased.
  • the figure 10c is a schematic representation of an exemplary embodiment according to the invention.
  • the circular comb performs a full rotation turn during the combing phase of the fiber heads, the comb lining active arc is equal to the comb circumference and the comb lining angle is 360 degrees.
  • the period of rotation of the circular comb with respect to the cycle of the machine is designated by "p" and is expressed in degrees; the speed of rotation of the comb is constant.
  • the figure 10d represents an alternative embodiment of the invention, in which the circular comb performs more than one turn during the combing phase of the fiber heads, that is to say that "p ⁇ ".
  • the active arc of the comb lining is greater than the circumference of the comb and the rotational angular velocity of the comb is constant.
  • the figure 10e represents another embodiment according to the invention, wherein the circular comb also performs more than one turn during the combing phase of the fiber heads, but where the angular velocity of the comb is increased and then decreased.
  • the angular position, expressed in degrees, occupied by the circular comb at the moment when the first line of needles or teeth engages in the head of the fibers at the beginning of the combing phase of the fiber heads is defined as the origin of the active arc of comb trim.
  • the angle "k1" increases in the direction of rotation of the comb.
  • variable "k1" is between 10 and 350 degrees.
  • values of "k1" will also be preferred rather close to 350 degrees and away from 10 degrees.
  • the impurities removed by the packed segment that is to say, too short fibers and defects such as pimples and plant wastes that are held by the needles or teeth of the garnished segment are located systematically and preferably, on the one hand near the origin of the active arc of the comb lining, because it is the first needles which carry out most of the cleaning and, on the other hand, towards the end of the active arc of comb lining where the impurities are often found stuck between the thinnest needles and the tightest ones.
  • the cylindrical brush which is responsible for cleaning the packed segment must be able to remove from the needles, on the one hand, a large accumulation of impurities localized near the origin of the active arc of comb trim and, on the other hand, impurities stuck between the fine and tight needles located towards the end of the active comb lining.
  • the speed of rotation of the cylindrical brush is greater than that of the circular comb and the bristles of the brush must interpenetrate sufficiently the needles of the circular comb, resulting in rapid wear of said cylindrical brush and the needles of the trimmed segment.
  • the interpenetration of the bristles of the brush with the needles of the trimmed segment is high, because the trimmed segment is cleaned only once per machine cycle, since it passes only once per cycle in front of the bristles of the cylindrical brush.
  • the needles of the garnished segment also wear quickly in contact with the textile material, because it is always the same needles that are loaded with the highest load cleaning of the fiber heads.
  • the origin of the active arc of comb lining can be regularly shifted at each cycle of the machine are never twice in succession the same needles or teeth of the circular comb which engage in the head of the fibers at the beginning of the combing phase of the heads.
  • the length of the active arc of the comb lining is adjustable and proportional to the diameter of the comb and the period of rotation of the comb.
  • the period of rotation of the comb is chosen such that the circular comb performs at least one revolution of rotation per cycle of the machine.
  • the active arc of the comb lining will be cleaned more than once per cycle of the machine.
  • the cleaning work of the circular comb by the cylindrical brush is facilitated and the wear of the bristles of the brush is reduced because the interpenetration of the bristles of the brush with the needles of the circular comb may be lower.
  • the wear of the needles or teeth of the circular comb is also reduced.
  • the circular comb is better cleaned and therefore remains effective longer.
  • the result is that the combed tape is of better quality, that the mechanical elements such as the needles or teeth of the circular comb and the cylindrical brush have an increased life and that the cleaning operations of the circular comb, replacement of the brush cylindrical or needles or teeth of the circular comb are less frequent.
  • the performance of the combing machine and the workload of the personnel are thus improved.
  • k2 will be equal to 13 and if it is 131 degrees, k2 will be equal to 131.
  • variable "k2" represents the number of machine cycles at the end of which the same line of needles or barrette of needles of the circular comb will engage in the heads of fibers protruding from the clamp. Thus, when the rotation period of the circular comb is 130 degrees, then the same needle line will be used every 13 cycles of the machine.
  • a period of rotation of the circular comb will be chosen such that the variable "k2" is as large as possible in such a way that the same needle line is used as little as possible and that the wear of the needles of the circular comb is as regular as possible.
  • a rotation period of the circular comb such as the variable "N", which corresponds to the number of turns that the circular comb performs during a machine cycle is the largest possible.
  • the circular comb When the value "p" is greater than “ ⁇ " degrees, the circular comb performs less than one turn during the combing phase of the fiber heads and, conversely, when the value "p" is less than " ⁇ " degrees, the circular comb performs more than one turn during the combing phase of the fiber heads.
  • the diameter of the circular comb is smaller than that currently employed. Its manufacturing cost is reduced and its handling is facilitated because its size and weight are reduced. In addition, its small size allows, all other things being equal, to provide more space between the pneumatic sensor and the circular comb.
  • the circular comb is packed at least 60%, but preferentially over its entire periphery, as opposed to conventional combs equipped with a trimmed segment and an unfilled segment, it is perfectly balanced dynamically. It can be garnished indifferently needles or teeth, whose size and density are chosen according to the textile material to be worked and the operation of combing or repainting to achieve. Its rotational speed is preferably uniformly constant which results in a better overall balancing of the combing machine.
  • the circular comb according to the invention is associated with a device for automatically feeding the cylindrical brush as described in FR-A-2,651,512 and which is intended to make up for the wear of the cylindrical brush.
  • the bristles of the brush slightly interpenetrate the needles or the teeth of the circular comb so as to clean them.
  • an automatic device increases the interpenetration value of the bristles of the brush with the teeth of the circular comb so that the needles or the teeth of the circular comb are cleaned thoroughly.
  • the automatic device reduces the interpenetration value, so that the brush returns to the position it had before said deep cleaning period.
  • the wear of the bristles of the cylindrical brush is reduced and its life is lengthened.
  • the straight combing machine is not provided with a sinking brush of the fiber head 23.
  • a sinking brush is generally responsible for constraining the head of the fibers 23 to penetrate between the needles or the teeth 8 of the circular comb. 7.
  • the upper jaw 4 of the clamp 3 is then advantageously provided with a driving device 4 "provided with a diverting surface 4 ', which forces the head of the fibers 23 to be oriented almost perpendicularly to the tangent of the circular comb 7
  • This device 4 has, in its lower part, a bearing surface 4"'intended to cooperate with the head of the fibers 23 and to constrain it to penetrate between the needles or the teeth 8 of the circular comb 7, said surface of 4 '' support extending from the detour surface 4 'over a distance at least equal to 3 mm.
  • the bearing surface 4 "'of the driving device 4" may be flat or curvilinear. In the latter case, its radius of curvature is concentric with that of the circular comb 7.
  • the driving device 4 may be an integral part of the upper jaw 4 of the clamp 3 or be removable and is advantageously made of the same material as the upper jaw 4, namely a metal material, plastic, or composite.
  • the upper jaw 4 which is articulated, is brought closer to the lower jaw 5 to touch it and to pinch the fibers between the two jaws to hold them, then the upper jaw continues its movement approaching the circular comb 7 and carries with it the lower jaw 5 to a distance such that the bearing surface 4 "'of the embossing device 4" is flush without touching the needles or the teeth 8 of the circular comb 7.

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

Abstract

The invention concerns a rectilinear combing method and a combing machine therefor. Said method is characterised in that it consists essentially in combing the fibre heads with a circular comb (7), equipped with needles or teeth (8) distributed over at least 60 % of its periphery, said circular comb (7) performing a fraction number or a whole number of rotations (N) per machine cycle. The invention is more particularly applicable in the textile industry, in particular to rectilinear combing machines.

Description

La présente invention concerne le domaine de l'industrie textile, en particulier les peigneuses rectilignes et a pour objet un procédé de peignage et une peigneuse pour la mise en oeuvre de ce procédé.The present invention relates to the field of the textile industry, in particular the rectilinear combers and relates to a combing process and a combing machine for carrying out this method.

Le cycle de peignage des peigneuses rectilignes modernes, qui sont dérivées de modèles datant du milieu du 19ème siècle, est bien connu et peut être décomposé en deux phases, dont la première est dite de peignage des têtes de fibres et la seconde de peignage des queues de fibres. La phase de peignage des têtes de fibres intervient lorsque la pince est fermée, alors que la phase de peignage des queues de fibres intervient au moment de l'arrachage, lorsque la pince est ouverte.The combing cycle of modern rectilinear combers, which are derived from models dating back to the middle of the 19 th century, is well known and can be broken down into two phases, the first of which is called combing of the fiber heads and the second of combing the tails of fibers. The combing phase of the fiber heads occurs when the clamp is closed, while the combing phase of the fiber tails occurs at the time of tearing, when the clamp is open.

La phase de peignage des têtes de fibres est réalisée par un segment d'aiguilles ou de dents disposé sur une partie de la périphérie d'un cylindre rotatif, couramment appelé peigne circulaire, alors que la phase de peignage des queues de fibres est réalisée par un peigne couramment appelé peigne fixe ou rectiligne.The combing phase of the fiber heads is carried out by a segment of needles or teeth arranged on a part of the periphery of a rotary cylinder, commonly called a circular comb, whereas the combing phase of the fiber tails is carried out by a comb commonly called fixed or straight comb.

Le peigne circulaire, dont l'axe de rotation est fixe par rapport au bâti de la machine, effectue un tour complet par cycle de machine. Ce peigne circulaire est un cylindre, dont une partie de la périphérie est pourvue d'un segment garni d'aiguilles ou de dents à densité croissante par rapport au sens de rotation du cylindre et qui sera utilisé, afin de nettoyer les têtes de fibres dépassant de la pince lors de la phase de peignage des têtes. Dans certains cas, la vitesse du peigne circulaire est successivement accélérée puis ralentie, pendant un cycle complet de la machine.The circular comb, whose axis of rotation is fixed relative to the frame of the machine, performs a complete revolution per machine cycle. This circular comb is a cylinder, a part of the periphery of which is provided with a segment filled with needles or teeth with increasing density relative to the direction of rotation of the cylinder and which will be used to clean the fiber heads exceeding of the pliers during the combing phase of the heads. In some cases, the speed of the circular comb is successively accelerated and then slowed down during a complete cycle of the machine.

L'autre partie de la périphérie du cylindre n'est pas pourvue d'aiguilles mais est lisse et évidée parce que la présence d'aiguilles sur cette partie du cylindre n'est pas nécessaire au moment de l'arrachage et du fait qu'il faut ménager de la place pour les éléments mécaniques en mouvement lors de l'opération d'arrachage. En effet, comme il ressort de différentes publications, d'une part, les aiguilles du peigne circulaire ne peuvent être montées que sur une partie seulement de la surface du cylindre qui les porte ( FR-A-2 114 192 ) et, d'autre part, il y a risque de collision entre le peigne circulaire et la mâchoire inférieure de pince, qui fait partie des éléments mécaniques en mouvement, lors de l'opération d'arrachage ( EP-A-0 936 292 ).The other part of the periphery of the cylinder is not provided with needles but is smooth and recessed because the presence of needles on this part of the cylinder is not necessary at the time of pulling and the fact that space must be provided for the mechanical elements in motion during the tearing operation. Indeed, as it appears from different publications, on the one hand, the needles of the circular comb can be mounted only on a part only of the surface of the cylinder which carries them ( FR-A-2 114 192 ) and, on the other hand, there is a risk of collision between the circular comb and the lower clamp jaw, which is part of mechanical movements, during the tearing operation ( EP-A-0 936 292 ).

Par ailleurs, d'après EP-A-0 735 168 , on sait qu'une collision entre le peigne circulaire , la pince , les cylindres arracheurs et le capteur pneumatique doit être évitée.Moreover, according to EP-A-0 735 168 it is known that a collision between the circular comb, the pliers, the pulling cylinders and the pneumatic sensor must be avoided.

Le segment est généralement garni d'aiguilles à densité croissante ( FR-A-1 209 191 ), de manière à assurer un peignage progressif des têtes de fibres. Ainsi, les premières barrettes d'aiguilles sont garnies d'aiguilles de fortes dimensions et largement espacées alors que les dernières barrettes d'aiguille sont garnies d'aiguilles plus fines et serrées.The segment is usually filled with needles of increasing density ( FR-A-1 209 191 ), so as to ensure progressive combing of the fiber heads. Thus, the first needle bars are filled with needles of large dimensions and widely spaced while the last needles are trimmed needles thinner and tight.

Actuellement, le segment d'aiguilles du peigne circulaire est nettoyé par une brosse cylindrique ( FR-A-2 651 512 ) qui est elle-même débourrée par un cylindre doffer, lequel est déchargé à son tour par un peigne battant. A cet effet, la vitesse de rotation de la brosse cylindrique, dont le sens de rotation est inverse de celui du peigne circulaire, est supérieure à celle du peigne circulaire. Ainsi, à chaque cycle de peignage d'une peigneuse rectiligne moderne, le peigne circulaire effectue une rotation d'un tour complet et le segment garni d'aiguilles, en passant en face de la brosse cylindrique, est nettoyé une seule fois par cycle.Currently, the circular comb needle segment is cleaned by a cylindrical brush ( FR-A-2,651,512 ) which is itself broken by a doffer cylinder, which is in turn discharged by a beating comb. For this purpose, the rotational speed of the cylindrical brush, whose direction of rotation is opposite to that of the circular comb, is greater than that of the circular comb. Thus, at each combing cycle of a modern rectilinear combing machine, the circular comb rotates one full revolution and the needle-filled segment, passing in front of the cylindrical brush, is cleaned once per cycle.

On sait que la qualité du ruban peigné, notamment sa propreté, dépend de l'efficacité du peignage des têtes et des queues de fibres, laquelle n'est pas optimale si le peigne circulaire n'est pas correctement nettoyé par la brosse cylindrique. Or il arrive fréquemment qu'un nettoyage satisfaisant des aiguilles ou des dents du segment garni ne puisse pas être obtenu.It is known that the quality of the combed tape, especially its cleanliness, depends on the effectiveness of the combing heads and fiber tails, which is not optimal if the circular comb is not properly cleaned by the cylindrical brush. However it often happens that a satisfactory cleaning of the needles or teeth of the packed segment can not be obtained.

En effet, du fait de la progressivité de la densité des aiguilles ou des dents du segment du peigne circulaire, les impuretés végétales et les défauts tels que les boutons et les fibres trop courtes, que le segment est chargé de retirer des rubans à peigner, se coincent très facilement entre les aiguilles ou les dents des barrettes, dont les aiguilles ou les dents sont les plus fines et les plus rapprochées, et la brosse cylindrique ne parvient pas à les retirer du peigne circulaire.Indeed, because of the progressivity of the density of the needles or the teeth of the segment of the circular comb, vegetable impurities and defects such as buttons and fibers too short, that the segment is responsible for removing combing ribbons, get stuck very easily between the needles or the teeth of the bars, whose needles or teeth are the finest and the closest, and the cylindrical brush can not remove them from the circular comb.

Il est donc périodiquement nécessaire de nettoyer manuellement le segment du peigne circulaire en arrêtant la machine. Cette opération nécessite parfois de retirer le peigne circulaire. A défaut, la qualité du ruban peigné se dégraderait progressivement.It is therefore periodically necessary to manually clean the segment of the circular comb by stopping the machine. This operation sometimes requires removing the circular comb. Otherwise, the quality of the combed tape will degrade gradually.

Pour remédier à cet inconvénient il avait été proposé d'utiliser des brosses à poils très durs, voire même métalliques ( DE-A-328 146 ), qui ne donnaient, cependant, pas satisfaction car elles entraînaient une usure rapide des aiguilles ou des dents du segment garni. Il a également été proposé, par EP-A-0 735 168 , d'effectuer au moins deux tours de peigne circulaire par cycle de machine, de façon à nettoyer le segment garni au moins deux fois par cycle.To remedy this drawback, it had been proposed to use brushes with very hard bristles, or even metal brushes ( DE-A-328,146 ), who did not give, however, not satisfactory because they led to rapid wear of the needles or teeth of the trimmed segment. It was also proposed by EP-A-0 735 168 at least two rounds of circular comb per machine cycle, so as to clean the packed segment at least twice per cycle.

Cependant, du fait de la progressivité de la densité du garnissage des segments d'aiguilles, et malgré plusieurs brossages du segment garni, les impuretés s'accumulent préférentiellement entre les premières aiguilles ou dents mises en contact avec la matière textile et, ensuite, entre les aiguilles ou dents les plus fines et les plus serrées. Il en résulte une dégradation progressive de la propreté des rubans peignés.However, because of the progressive density of the lining of the needle segments, and despite several brushings of the packed segment, the impurities preferentially accumulate between the first needles or teeth brought into contact with the textile material and then between needles or teeth the finest and the tightest. This results in a gradual degradation of the cleanliness of the combed ribbons.

La présente invention a pour but de pallier ces inconvénients en proposant un nouveau procédé de peignage rectiligne et une nouvelle peigneuse rectiligne mettant en oeuvre ce procédé, permettant une amélioration des qualités de peignage, ainsi que du nettoyage du peigne.The object of the present invention is to overcome these drawbacks by proposing a new rectilinear combing method and a new rectilinear combing machine implementing this method, allowing an improvement of the combing qualities, as well as the cleaning of the comb.

A cet effet, l'invention concerne un procédé de peinage rectiligne et une peigneuse rectiligne tels que décrit dans les revendications indépendantes.For this purpose, the invention relates to a rectilinearly combing method and a rectilinear combing machine as described in the independent claims.

L'invention sera mieux comprise, grâce à la description ci-après, qui se rapporte à un mode de réalisation préféré, donné à titre d'exemple non limitatif, et expliqué avec référence aux dessins schématiques annexés, dans lesquels :

  • la figure 1 est une vue schématique en élévation latérale d'une peigneuse conforme à l'invention ;
  • la figure 2 est une vue partielle en élévation latérale et en coupe, à plus grande échelle, de la pince en position de peignage des têtes de fibres ;
  • les figures 3 à 7 sont des vues en élévation latérale de différentes variantes de réalisation du peigne circulaire ;
  • les figures 8 et 9 sont des vues en élévation frontale d'autres variantes de réalisation du peigne circulaire, et
  • les figures 10a à 10e sont des vues schématiques représentant différents cycles de peignage en relation avec un cycle de machine.
The invention will be better understood, thanks to the following description, which refers to a preferred embodiment, given by way of non-limiting example, and explained with reference to the attached schematic drawings, in which:
  • the figure 1 is a schematic side elevational view of a combing machine according to the invention;
  • the figure 2 is a partial view in side elevation and in section, on a larger scale, of the clamp in the combing position of the fiber heads;
  • the Figures 3 to 7 are side elevational views of different embodiments of the circular comb;
  • the Figures 8 and 9 are front elevation views of other embodiments of the circular comb, and
  • the Figures 10a to 10e are schematic views showing different combing cycles in relation to a machine cycle.

La figure 1 des dessins annexés représente une peigneuse rectiligne comportant un peigne alimentaire 1 associé à une grille alimentaire 2, une pince 3 formée par une mâchoire supérieure 4 coopérant avec une mâchoire inférieure 5, une tôle entre pince 6, un peigne circulaire 7, garni d'aiguilles ou de dents 8, dont la vitesse de rotation est continue et qui est monté sur un arbre de support 9, dont la position est fixe par rapport au bâti 10 de la machine, une brosse cylindrique 11 garnie de poils, un doffer 12 garni de pointes métalliques, un peigne battant 13, un chariot 14 support de cylindres arracheurs 15 et 16, une biellette 17, un équipage mobile 18, un manchon d'arrachage 19, un cylindre de tension 20 et un peigne fixe 21 solidaire d'un levier articulé 22.The figure 1 appended drawings shows a rectilinear combing machine comprising a food comb 1 associated with a food grid 2, a clamp 3 formed by an upper jaw 4 cooperating with a lower jaw 5, a sheet between clamp 6, a circular comb 7, filled with needles or teeth 8, whose rotation speed is continuous and which is mounted on a support shaft 9, whose position is fixed relative to the frame 10 of the machine, a cylindrical brush 11 furnished with bristles, a doffer 12 filled with metal tips, a flapper 13, a carriage 14 supporting torn cylinders 15 and 16, a rod 17, a moving element 18, a tear-off sleeve 19, a tension cylinder 20 and a fixed comb 21 secured to a lever articulated 22.

Conformément à l'invention, cette peigneuse rectiligne met en oeuvre un procédé de peignage rectiligne qui consiste essentiellement à effectuer un peignage des têtes de fibres à l'aide d'un peigne circulaire 7, garni d'aiguilles ou de dents 8 réparties sur au moins 60% de sa périphérie, ledit peigne circulaire 7 effectuant un nombre non entier de tours de rotation N par cycle de machine.According to the invention, this straight combing machine uses a rectilinear combing process which consists essentially of combing the fiber heads with the aid of a circular comb 7, lined with needles or teeth 8 distributed over at less than 60% of its periphery, said circular comb 7 performing a non-integer number of rotational revolutions N per machine cycle.

Selon une caractéristique de l'invention, l'arc actif du peigne 7, correspondant à la longueur de la garniture d'aiguilles ou de dents 8 utilisée lors de la phase de peignage des têtes de fibres, est déphasé d'un cycle machine à l'autre.According to one characteristic of the invention, the active arc of the comb 7, corresponding to the length of the needle or tooth lining 8 used during the combing phase of the fiber heads, is out of phase with a machine cycle. the other.

Selon une variante de réalisation de l'invention, le procédé de peignage rectiligne peut également consister essentiellement à effectuer un peignage des têtes de fibres à l'aide d'un peigne circulaire 7, garni d'aiguilles ou de dents 8 réparties sur au moins 60% de sa périphérie, ledit peigne circulaire 7 effectuant un nombre entier de tours de rotation N par cycle de machine.According to an alternative embodiment of the invention, the rectilinear combing method can also consist essentially of combing the fiber heads using a circular comb 7, lined with needles or teeth 8 distributed over at least 60% of its periphery, said circular comb 7 performing an integer number of rotational revolutions N per machine cycle.

Aussi, le peigne circulaire 7 peut effectuer au moins un tour de rotation N par cycle de machine.Also, the circular comb 7 can perform at least one turn of rotation N per machine cycle.

Conformément à une autre caractéristique de l'invention, le peignage des têtes de fibres par le peigne circulaire 7 est avantageusement effectué pendant une rotation de ce dernier comprise entre 0,7 et 1,5 tour.According to another characteristic of the invention, the combing of the fiber heads by the circular comb 7 is advantageously carried out during a rotation of the latter between 0.7 and 1.5 turns.

Selon une variante de réalisation de l'invention, le peignage des têtes de fibres peut préférentiellement être effectué pendant moins d'un tour complet de rotation du peigne circulaire 7.According to an alternative embodiment of the invention, the combing of the fiber heads may preferably be performed for less than one complete turn of rotation of the circular comb 7.

Il est également possible, conformément à une autre variante de réalisation de l'invention, d'effectuer le peignage des têtes de fibres pendant plus d'un tour complet de rotation du peigne circulaire 7.It is also possible, in accordance with another variant embodiment of the invention, to comb the fiber heads for more than one complete revolution of rotation of the circular comb 7.

A cet effet, le peigne circulaire 7 est un cylindre garni sur au moins 60% de sa périphérie d'aiguilles ou de dents 8, de caractéristiques identiques ou différentes, cylindre dont la vitesse de rotation est continue et réglable et qui est monté sur un arbre de support 9, dont la position est fixe par rapport au bâti 10 de la machine, ce peigne 7 effectuant un nombre non entier ou entier de tours de rotation par cycle de machine.For this purpose, the circular comb 7 is a cylinder packed on at least 60% of its periphery with needles or teeth 8, with identical or different characteristics, a cylinder whose speed of rotation is continuous and adjustable and which is mounted on a support shaft 9, whose position is fixed relative to the frame 10 of the machine, this comb 7 performing a non-integer or whole number of turns per machine cycle.

La figure 1 des dessins annexés représente la peigneuse rectiligne conforme à l'invention, en phase d'arrachage, cette peigneuse comprenant un dispositif d'alimentation, un dispositif d'arrachage, un dispositif de nettoyage des têtes de fibres et un dispositif de nettoyage des queues de fibres.The figure 1 The accompanying drawings show the straight-edge combler according to the invention, in tearing phase, this combing machine comprising a feeding device, a pulling device, a fiber head cleaning device and a tail cleaning device. fibers.

Le dispositif d'alimentation est constitué par le peigne alimentaire 1, qui est associé à une grille alimentaire 2, par une pince 3 formée par une mâchoire supérieure 4 coopérant avec une mâchoire inférieure 5 et par une tôle entre pince 6. La matière textile est déplacée par le dispositif d'alimentation ainsi constitué pour être amené en contact avec le dispositif de nettoyage des têtes de fibres, qui réalisent la phase de peignage desdites têtes de fibres.The feed device is constituted by the food comb 1, which is associated with a food grid 2, by a clamp 3 formed by an upper jaw 4 cooperating with a lower jaw 5 and by a sheet between clamp 6. The textile material is moved by the feed device thus formed to be brought into contact with the fiber head cleaning device, which perform the combing phase of said fiber heads.

La matière textile passe entre le peigne alimentaire 1 et la grille alimentaire 2, qui sont mobiles de telle façon qu'ils puissent être écartés l'un de l'autre et qu'ils puissent être déplacés ensemble, soit dans le sens de déplacement de la matière textile, soit dans le sens inverse du déplacement de la matière textile. En l'occurrence, pendant un cycle de machine, le peigne 1 s'écarte de la grille 2, puis le peigne et la grille reculent ensemble, le peigne est alors rapproché de la grille et les aiguilles du peigne traversent la matière textile. Ensuite, cet ensemble ainsi constitué avance en entraînant avec lui la matière textile, de façon à présenter les têtes de fibres 23 (figure 2) au dispositif de nettoyage des têtes de fibres et à procéder à l'alimentation d'une nouvelle frange de fibres.The textile material passes between the food comb 1 and the food grid 2, which are movable in such a way that they can be separated from one another and that they can be moved together, or in the direction of movement of the the textile material, in the opposite direction of the movement of the textile material. In this case, during a machine cycle, the comb 1 deviates from the grid 2, then the comb and the grid recoil together, the comb is then close to the grid and the comb needles cross the textile material. Then, this set thus constituted advances in training with him the textile material, so as to present the fiber heads 23 ( figure 2 ) to the cleaning device of the fiber heads and to supply a new fiber fringe.

A ce moment, la pince 3 se ferme et la mâchoire inférieure 5, qui est articulée au bâti 10 de la machine, est abaissée de manière à se rapprocher du dispositif de nettoyage des têtes de fibres. La mâchoire supérieure 4, qui est également articulée au bâti de la machine, est abaissée, afin de se rapprocher de la mâchoire inférieure 5, jusqu'à entrer en contact avec elle pour pincer les fibres situées entre les deux mâchoires 4 et 5 et pour les retenir, puis la mâchoire supérieure 4 poursuit son mouvement en direction du dispositif de nettoyage des têtes de fibres et entraîne avec elle la mâchoire inférieure 5. Ce déplacement de la mâchoire inférieure vers le peigne circulaire 7 s'effectue progressivement.At this moment, the clamp 3 closes and the lower jaw 5, which is articulated to the frame 10 of the machine, is lowered so as to approach the cleaning device of the fiber heads. The upper jaw 4, which is also articulated to the frame of the machine, is lowered, in order to get closer to the lower jaw 5, until it comes into contact with it to pinch the fibers located between the two jaws 4 and 5 and to retain them, then the upper jaw 4 continues its movement towards the cleaning device of the fiber heads and carries with it the lower jaw 5. This movement of the lower jaw to the circular comb 7 is carried out gradually.

La phase de peignage des têtes de fibres commence alors et est réalisée par le dispositif de nettoyage des têtes de fibres, qui est constituée par le peigne circulaire 7, sous forme de cylindre garni sur au moins 60% de sa périphérie d'aiguilles ou de dents 8 et dont la vitesse de rotation est continue et réglable, ce peigne étant monté sur un arbre de support 9, dont la disposition est fixe par rapport au bâti 10 de la machine. Ce dispositif de nettoyage comporte, en outre, une brosse cylindrique 11 garnie de poils, un doffer 12 garni de pointes métalliques et un peigne battant 13.The combing phase of the fiber heads then begins and is carried out by the fiber head cleaning device, which is constituted by the circular comb 7, in the form of a cylinder packed on at least 60% of its periphery with needles or teeth 8 and whose rotational speed is continuous and adjustable, this comb being mounted on a support shaft 9, whose arrangement is fixed relative to the frame 10 of the machine. This cleaning device further comprises a cylindrical brush 11 furnished with bristles, a doffer 12 furnished with metal tips and a flapper comb 13.

Lors de leur rotation, les aiguilles ou les dents 8 du peigne circulaire 7 pénètrent dans les têtes de fibres 23 présentées par la pince 3 et en retire les fibres courtes et les impuretés (figure 2). La brosse cylindrique 11, dont les poils s'interpénètrent dans les aiguilles ou dans les dents 8 du peigne circulaire 7, tourne plus vite que ledit peigne circulaire 7, mais en sens inverse, de manière à retirer les fibres courtes et les impuretés transportées par les aiguilles ou les dents 8 du peigne circulaire 7 et de façon à le maintenir propre.During their rotation, the needles or the teeth 8 of the circular comb 7 penetrate into the fiber heads 23 presented by the clamp 3 and remove the short fibers and the impurities ( figure 2 ). The cylindrical brush 11, whose bristles interpenetrate in the needles or in the teeth 8 of the circular comb 7, rotates faster than said circular comb 7, but in the opposite direction, so as to remove short fibers and impurities transported by the needles or teeth 8 of the circular comb 7 and so as to keep it clean.

Le doffer tourne moins vite que la brosse cylindrique 11 et en sens inverse de ladite brosse cylindrique 11 et ses pointes affleurent les poils de cette dernière et déchargent lesdits poils de ladite brosse cylindrique 11 des fibres courtes et des impuretés transportées par la brosse.The doffer rotates less rapidly than the cylindrical brush 11 and in the opposite direction of said cylindrical brush 11 and its points are flush with the bristles of the latter and discharge said bristles of said cylindrical brush 11 short fibers and impurities transported by the brush.

Le peigne battant 13 du dispositif de nettoyage des têtes de fibres est une lame qui est mise en oscillation à proximité des pointes du doffer 12, cette lame étant chargée de débarrasser les pointes du doffer 12 des fibres courtes et des impuretés qu'elles transportent. Les fibres courtes et les impuretés constituent la blousse, qui est récupérée par gravité et/ou par aspiration en vue de son évacuation.The flapper comb 13 of the fiber head cleaning device is a blade which is oscillated near the tips of the doffer 12, this blade being responsible for clearing the tips of the doffer 12 short fibers and impurities they carry. Short fibers and the impurities constitute the blush, which is recovered by gravity and / or by suction for its evacuation.

La matière textile est ensuite déplacée par le dispositif d'alimentation pour être mise en contact avec le dispositif d'arrachage et avec le dispositif de nettoyage des queues de fibres, ces dispositifs réalisant les phases d'arrachage et de nettoyage des queues de fibres.The textile material is then moved by the feeder to be brought into contact with the stripping device and with the fiber queues cleaning device, these devices performing the stripping and cleaning phases of the fiber tails.

Le dispositif d'arrachage est notamment constitué par un chariot 14, par une biellette 17, par un équipage mobile 18, par une paire de cylindres arracheurs 15 et 16, par un manchon d'arrachage 19 et par un cylindre de tension 20 (figure 1).The pulling device comprises in particular a carriage 14, a rod 17, a moving element 18, a pair of tearing cylinders 15 and 16, a pulling sleeve 19 and a tensioning cylinder 20 (FIG. figure 1 ).

Le chariot 14 est un levier, dont l'extrémité inférieure est articulée par un palier 24 sur le bâti 10 de la machine et dont l'extrémité supérieure est articulée, par l'intermédiaire d'un palier 25, à l'équipage mobile 18. La biellette 17 est un levier, dont l'extrémité inférieure est articulée par l'intermédiaire d'un palier 26 au bâti 10 de la machine et dont l'extrémité supérieure est articulée, par l'intermédiaire d'un palier 27, à l'équipage mobile 18. L'équipage mobile 18 est constitué par deux parties solidaires et coulissant l'une sur l'autre, non représentées dans le dessin annexé, dont l'une supporte le palier 25 de l'articulation haute du chariot 14 et dont l'autre supporte l'articulation haute 27 de la biellette 17.The carriage 14 is a lever, whose lower end is articulated by a bearing 24 on the frame 10 of the machine and whose upper end is articulated, via a bearing 25, to the moving assembly 18 The rod 17 is a lever, whose lower end is articulated by means of a bearing 26 to the frame 10 of the machine and whose upper end is articulated, via a bearing 27, to the moving element 18. The moving element 18 is constituted by two integral parts sliding on one another, not shown in the accompanying drawing, one of which supports the bearing 25 of the upper articulation of the carriage 14. and the other supports the high articulation 27 of the rod 17.

Le chariot 14 est animé d'un mouvement d'oscillation autour de son articulation basse 24 par l'intermédiaire d'un levier (non représenté) relié à un dispositif d'actionnement en va-et-vient. Ainsi, le chariot 14 peut se déplacer entre deux positions angulaires extrêmes séparées l'une de l'autre d'une distance appelée couramment la course du chariot. Dans l'une de ses deux positions extrêmes, l'extrémité supérieure du chariot 14 se situe à proximité du dispositif d'alimentation et, dans l'autre position extrême, l'équipage mobile 18 est à proximité d'une boîte à friser 28.The carriage 14 is animated by an oscillation movement around its lower articulation 24 via a lever (not shown) connected to a reciprocating actuating device. Thus, the carriage 14 can move between two extreme angular positions separated from one another by a distance commonly called the travel of the carriage. In one of its two extreme positions, the upper end of the carriage 14 is located near the feeder and, in the other extreme position, the moving element 18 is close to a curling box 28 .

Dans sa partie supérieure, le chariot 14 supporte le cylindre arracheur inférieur 15, qui est commandé positivement en rotation selon une loi de mouvement dite du pas de pèlerin et qui est surmonté par le cylindre arracheur supérieur 16, le manchon d'arrachage 19 étant pincé entre les cylindres arracheurs 15 et 16.In its upper part, the carriage 14 supports the lower tearing cylinder 15, which is positively rotated according to a so-called pilgrim movement law and which is surmounted by the upper tearing cylinder 16, the pulling sleeve 19 being pinched between the pulling cylinders 15 and 16.

L'équipage mobile 18 supporte, dans sa partie proche de la boîte à friser 28 le cylindre de tension 20 du manchon d'arrachage 19, qui est maintenu sous tension par écartement l'une de l'autre des deux parties coulissantes de l'équipage mobile 18. En outre, l'équipage mobile 18 supporte, entre le cylindre de tension 20 et un entonnoir de sortie 29, une paire de cylindres détacheur 30a et 30b et, au-dessus du manchon d'arrachage 19, une tôle sur manchon 31 et un cylindre anti-barbe 32.The moving element 18 supports, in its part close to the curling box 28 the tension cylinder 20 of the tear-off sleeve 19, which is kept under tension by spacing the two sliding parts of the mobile equipment 18. In addition, the mobile equipment supports, between the tension cylinder 20 and an outlet funnel 29, a pair of detaching rolls 30a and 30b and, above the tear-off sleeve 19, a sleeve plate 31 and an anti-beard cylinder 32.

Lors de la phase d'arrachage des fibres, l'extrémité supérieure du chariot 14 se situe à proximité du dispositif d'alimentation et les cylindres arracheurs 15 et 16 associés au manchon d'arrachage 19 pincent l'extrémité des têtes de fibres 23 présentée par le dispositif d'alimentation. A cet effet, la pince 3 est ouverte et la tôle entre pince 6 est avancée dans le sens de déplacement des fibres, de manière à contraindre l'extrémité des têtes de fibres à se présenter entre les cylindres arracheurs 15 et 16. Ces derniers sont mis en rotation de façon à extraire les têtes de fibres du peigne alimentaire 1 et le chariot 14 est déplacé, afin de s'écarter de la pince 3.During the fiber tearing phase, the upper end of the carriage 14 is located close to the feed device and the tearing cylinders 15 and 16 associated with the pulling sleeve 19 pinch the end of the fiber heads 23 presented. by the feeding device. For this purpose, the clamp 3 is open and the sheet between clamp 6 is advanced in the direction of movement of the fibers, so as to constrain the end of the fiber heads to be between the tearing cylinders 15 and 16. These are rotated so as to extract the fiber heads from the food comb 1 and the carriage 14 is moved to move away from the clamp 3.

Le peignage des queues de fibres à l'aide du dispositif de nettoyage des queues de fibres sera effectué simultanément à ce déplacement desdites fibres. A cet effet, le dispositif de nettoyage des queues de fibres présente un peigne fixe 21 solidaire d'un levier articulé 22. Le peigne fixe 21 est approché des têtes de fibres 23 de telle manière que les aiguilles du peigne fixe 21, en traversant la matière, en retirent les impuretés pendant le déplacement de la matière par le dispositif d'arrachage. Les impuretés ainsi retenues sont récupérées par gravité et/ou par aspiration par le peigne circulaire 7 et un capteur pneumatique 33.The combing of the fiber tails using the fiber tails cleaning device will be carried out simultaneously with this displacement of said fibers. For this purpose, the device for cleaning the fiber tails has a fixed comb 21 integral with an articulated lever 22. The fixed comb 21 is approached from the fiber heads 23 so that the needles of the fixed comb 21, crossing the material, remove the impurities during movement of the material by the pulling device. The impurities thus retained are recovered by gravity and / or by suction by the circular comb 7 and a pneumatic sensor 33.

Selon une autre caractéristique de l'invention, le peigne circulaire 7 est solidaire d'un arbre de support, non représenté, monté, avec possibilité de rotation, en porte-à-faux sur le bâti 10 de la machine, ce bâti présentant, du côté de l'extrémité libre de l'arbre de support, une ouverture autorisant l'extraction latérale du peigne circulaire. Cet arbre de support est mis en rotation par l'intermédiaire d'un moyen d'entraînement, tel qu'un pignon cranté, une roue dentée, une poulie lisse ou un moteur électrique, et assure le blocage axial et en rotation du peigne circulaire par l'intermédiaire de butées. Ce peigne circulaire 7 peut être monobloc ou en plusieurs parties et est formé par un cylindre, dont les deux extrémités sont montées sur des flasques solidarisés avec l'arbre de support.According to another characteristic of the invention, the circular comb 7 is integral with a support shaft, not shown, mounted, with possibility of rotation, cantilevered on the frame 10 of the machine, this frame having, on the side of the free end of the support shaft, an opening allowing lateral extraction of the circular comb. This support shaft is rotated by means of a drive means, such as a notched pinion, a toothed wheel, a smooth pulley or an electric motor, and ensures the axial locking and rotation of the circular comb via stops. This circular comb 7 may be one-piece or multi-part and is formed by a cylinder, the two ends of which are mounted on flanges secured to the support shaft.

De manière connue, l'arbre de support peut également être monté en rotation sur deux roulements placés chacun sur le bâti, de part et d'autre du peigne circulaire.In known manner, the support shaft can also be rotatably mounted on two bearings each placed on the frame, on either side of the circular comb.

Les figures 3a, 3b et 4 à 9 des dessins annexés représentent schématiquement des variantes de réalisation du peigne circulaire 7.The Figures 3a, 3b and 4 to 9 the accompanying drawings show schematically embodiments of the circular comb 7.

Le peigne circulaire 7 est garni d'aiguilles ou de dents 8 réparties sur au moins 60% de sa périphérie (figure 3a). Dans cette configuration, le peigne circulaire 7 ne présente pas de parties lisse et évidée, telles que connues dans l'état de la technique. Les aiguilles ou dents 8 sont réparties le long de la circonférence totale du peigne circulaire sur au moins 60% de ladite circonférence, les zones non garnies d'aiguilles ou de dents étant réparties le long de la circonférence totale. De préférence, le peigne circulaire 7 est garni d'aiguilles ou de dents 8 sur toute sa circonférence (figure 3b).The circular comb 7 is lined with needles or teeth 8 distributed over at least 60% of its periphery ( figure 3a ). In this configuration, the circular comb 7 does not have smooth and recessed portions, as known in the state of the art. The needles or teeth 8 are distributed along the total circumference of the circular comb over at least 60% of said circumference, the areas not lined with needles or teeth being distributed along the entire circumference. Preferably, the circular comb 7 is lined with needles or teeth 8 over its entire circumference ( figure 3b ).

Dans les modes de réalisation selon les figures 3a et 3b, le peigne circulaire est constitué par un cylindre 34 sur lequel sont placées les aiguilles ou les dents 8. Dans le mode de réalisation selon les figures 4 à 6, le peigne circulaire est constitué par plusieurs portions en arc de cercle 34' pourvues chacune de dents ou aiguilles 8.In the embodiments according to Figures 3a and 3b , the circular comb is constituted by a cylinder 34 on which are placed the needles or the teeth 8. In the embodiment according to the Figures 4 to 6 , the circular comb is constituted by several arcuate portions 34 'each provided with teeth or needles 8.

Selon que l'on considère une génératrice ou la circonférence du peigne 7, les dents ou aiguilles 8 peuvent être de caractéristiques identiques (figures 3 à 6) ou différentes, ou sont disposées selon une séquence répétitive (figures 7 à 9). Les pointes des aiguilles ou dents 8 du peigne circulaire 7 ne se situent pas forcément toutes sur le même rayon ou la même génératrice du peigne circulaire 7. A cet effet, lesdites pointes des aiguilles ou dents 8 du peigne circulaire 7 sont disposées sur des cylindres enveloppes de rayons différents. Une telle disposition permet d'obtenir des différences de hauteur entre deux dents ou aiguilles ou lignes de dents ou groupes de lignes de dents successives, de façon à améliorer encore le nettoyage.Depending on whether a generatrix or the circumference of the comb 7 is considered, the teeth or needles 8 may have identical characteristics ( Figures 3 to 6 ) or different, or are arranged in a repetitive sequence ( Figures 7 to 9 ). The tips of the needles or teeth 8 of the circular comb 7 are not necessarily all located on the same radius or the same generatrix of the circular comb 7. For this purpose, said tips of the needles or teeth 8 of the circular comb 7 are arranged on cylinders envelopes of different radii. Such an arrangement makes it possible to obtain differences in height between two teeth or needles or rows of teeth or groups of rows of successive teeth, so as to further improve cleaning.

Dans le mode de réalisation selon la figure 8, les dents ou aiguilles du peigne circulaire 7 sont réalisées par enroulement, selon un angle d'enroulement compris entre 55° et 125° par rapport à l'axe du peigne circulaire 7, d'un ou de plusieurs fils dentés 35, à spires jointives de caractéristiques A, B, C, D, etc... identiques ou différentes ou dont les séquences se répètent périodiquement.In the embodiment according to figure 8 , the teeth or needles of the circular comb 7 are made by winding, at a winding angle of between 55 ° and 125 ° with respect to the axis of the circular comb 7, one or more serrated threads 35, with turns joined with characteristics A, B, C, D, etc ... identical or different or whose sequences are repeated periodically.

Dans un tel cas, le peigne circulaire est préférentiellement réalisé par enroulement d'au moins un fil denté, à spires jointives, autour d'un cylindre, à la manière d'un tambour de carde. Lors d'un enroulement de plus d'un fil denté autour d'un cylindre, chaque fil denté peut présenter des caractéristiques différentes comme par exemple la densité, c'est à dire la distance séparant deux pointes consécutives, ou l'épaisseur du fil, ou encore la forme des dents. Dans un tel cas de fil denté enroulé autour d'un cylindre, on prendra garde à éviter, lors de la fabrication du peigne, la formation d'images, c'est-à-dire de zones périphériques locales de la garniture où les dents seraient disposées en lignes régulières par rapport à d'autres zones où les dents seraient disposées aléatoirement.In such a case, the circular comb is preferably made by winding at least one toothed wire with contiguous turns around a cylinder, in the manner of a carding drum. When winding more than one toothed wire around a cylinder, each toothed wire may have different characteristics such as, for example, the density, that is to say the distance separating two consecutive peaks, or the thickness of the wire. , or the shape of the teeth. In such a case of toothed wire wound around a cylinder, care should be taken to avoid, during the manufacture of the comb, the formation of images, that is to say local peripheral zones of the lining where the teeth would be arranged in regular lines with respect to other areas where the teeth would be arranged randomly.

Lorsque le peigne circulaire est réalisé en enroulant un ou plusieurs fils dentés autour d'un cylindre, on choisira, afin de le nettoyer à fond, un dispositif de nettoyage de garniture du type de ceux utilisés pour les tambours de carde et dont un exemple est connu par FR-A-2 705 367 .When the circular comb is made by winding one or more serrated threads around a cylinder, it will be chosen, in order to clean it thoroughly, a trim cleaning device of the type used for card drums and an example of which is known by FR-A-2,705,367 .

Comme le montrent les figures 7 et 9 et selon que l'on considère une génératrice ou la circonférence du peigne, le peigne circulaire peut être réalisé par empilement de tôles découpées sous la forme de couronnes circulaires 36, dont la périphérie extérieure est pourvue de dents identiques ou de caractéristiques différentes A, B, C, etc...ou disposées selon une séquence répétitive et dont la périphérie intérieure est munie de moyens de maintien permettant le centrage, l'entraînement en rotation et la fixation desdites couronnes (figure 7).As shown by Figures 7 and 9 and depending on whether a generatrix or the circumference of the comb is considered, the circular comb can be made by stacking sheets cut in the form of circular rings 36, the outer periphery of which is provided with identical teeth or with different characteristics A, B , C, etc ... or arranged in a repetitive sequence and whose inner periphery is provided with holding means for centering, driving in rotation and fixing said crowns ( figure 7 ).

Dans le cas d'une garniture obtenue par empilement de tôles découpées, on peut choisir, lorsque la garniture est montée sur plus d'une coquille partiellement cylindrique, d'empiler sur chacune des coquilles composant le peigne circulaire, des tronçons de couronnes circulaires 37 l'un contre l'autre(figure 6).In the case of a lining obtained by stacking cut sheets, it is possible to choose, when the lining is mounted on more than one partially cylindrical shell, to stack on each of the shells constituting the circular comb, sections of circular rings 37 One against the other( figure 6 ).

En outre, les dents ou aiguilles 8 du peigne circulaire 7 peuvent présenter une densité identique sur toute la périphérie dudit peigne circulaire 7 ou des densités différentes, par exemple par disposition suivant des lignes contiguës d'aiguilles ou de dents 8 de densités différentes.In addition, the teeth or needles 8 of the circular comb 7 may have an identical density over the entire periphery of said circular comb 7 or different densities, for example by arrangement along contiguous lines of needles or teeth 8 of different densities.

La figure 10a des dessins schématiques annexés représente un cycle complet de 360 degrés de rotation d'une peigneuse rectiligne de type connu. La phase de peignage des têtes de fibres est désignée par « a » et l'angle de peignage des têtes associé à la phase « a » est désigné par « α ». L'angle « a » correspond à la fraction du cycle de la machine pendant laquelle est effectué le peignage des têtes de fibres. Cet angle de peignage des têtes est couramment de l'ordre de 130 degrés.The figure 10a appended schematic drawings represents a complete cycle of 360 degrees of rotation of a rectilinear combing machine of known type. The combing phase of the fiber heads is designated "a" and the combing angle of the heads associated with the phase "a" is designated "α". The angle "a" corresponds to the fraction of the cycle of the machine during which the combing of the fiber heads is performed. This angle of combing heads is commonly of the order of 130 degrees.

La figure 10b représente schématiquement le mouvement de rotation d'un peigne circulaire lors d'un cycle complet de rotation habituel sur des peigneuses rectilignes conventionnelles. L'angle « b » définit par l'arc actif de garniture du peigne circulaire correspondant à la longueur de la garniture d'aiguilles ou de dents qui sera utilisée lors de la phase de peignage des têtes de fibres et l'angle « β » définit l'arc actif de garniture du peigne. Sur une peigneuse rectiligne conventionnelle , cet angle de garniture de peigne est de l'ordre de 160 à 220 degrés. Le peigne circulaire effectuant exactement un tour par cycle de la machine , la vitesse angulaire de rotation du peigne est augmentée puis diminuée.The figure 10b schematically represents the rotational movement of a circular comb during a complete cycle of rotation usual on conventional rectilinear combers. The angle "b" defined by the active arc of the circular comb lining corresponding to the length of the needle or tooth lining that will be used during the combing phase of the fiber heads and the angle "β" defines the active arc of the comb lining. On a conventional straight combing machine, this comb lining angle is of the order of 160 to 220 degrees. The circular comb performing exactly one revolution per cycle of the machine, the angular speed of rotation of the comb is increased and then decreased.

La figure 10c est une représentation schématique d'un exemple de réalisation conforme à l'invention. Dans cet exemple, le peigne circulaire effectue un tour complet de rotation pendant la phase de peignage des têtes de fibres, l'arc actif de garniture du peigne est égal à la circonférence du peigne et l'angle de garniture du peigne est de 360 degrés. La période de rotation du peigne circulaire par rapport au cycle de la machine est désignée par « p » et est exprimée en degrés ; la vitesse de rotation du peigne est constante.The figure 10c is a schematic representation of an exemplary embodiment according to the invention. In this example, the circular comb performs a full rotation turn during the combing phase of the fiber heads, the comb lining active arc is equal to the comb circumference and the comb lining angle is 360 degrees. . The period of rotation of the circular comb with respect to the cycle of the machine is designated by "p" and is expressed in degrees; the speed of rotation of the comb is constant.

La figure 10d représente une variante de réalisation de l'invention, dans laquelle le peigne circulaire effectue plus d'un tour de rotation pendant la phase de peignage des têtes de fibres, c'est à dire que « p < α ». L'arc actif de garniture du peigne est supérieur à la circonférence du peigne et la vitesse angulaire de rotation du peigne est constante.The figure 10d represents an alternative embodiment of the invention, in which the circular comb performs more than one turn during the combing phase of the fiber heads, that is to say that "p <α". The active arc of the comb lining is greater than the circumference of the comb and the rotational angular velocity of the comb is constant.

La figure 10e représente un autre exemple de réalisation conforme à l'invention, où le peigne circulaire effectue également plus d'un tour de rotation pendant la phase de peignage des têtes de fibres, mais où la vitesse angulaire du peigne est augmentée puis diminuée.The figure 10e represents another embodiment according to the invention, wherein the circular comb also performs more than one turn during the combing phase of the fiber heads, but where the angular velocity of the comb is increased and then decreased.

Dans le cas où la vitesse angulaire du peigne circulaire est constante, on désigne par « N », le nombre de tours qu'effectue le peigne circulaire par cycle de machine. Ainsi on a : N = 360 p

Figure imgb0001

avec : « 360 » degrés machine / cycle machine ; « p » degrés machine / tour de peigne et « N » tour de peigne / cycle machine.In the case where the angular velocity of the circular comb is constant, "N" is the number of revolutions that the circular comb makes per machine cycle. So we have: NOT = 360 p
Figure imgb0001
with: "360" degree machine / cycle machine; "P" machine / comb tower and "N" comb / machine cycle.

La position angulaire, exprimée en degrés, qu'occupe le peigne circulaire au moment où la première ligne d'aiguilles ou de dents s'engage dans la tête des fibres au début de la phase de peignage des têtes de fibres est définie comme origine de l'arc actif de garniture du peigne.The angular position, expressed in degrees, occupied by the circular comb at the moment when the first line of needles or teeth engages in the head of the fibers at the beginning of the combing phase of the fiber heads is defined as the origin of the active arc of comb trim.

Conformément à une caractéristique de l'invention, la valeur « p » de la période de rotation du peigne circulaire 7 est choisie telle que l'arc actif de garniture du peigne 7, qui est la longueur de la garniture d'aiguilles ou de dents 8 utilisée lors de la phase de peignage des têtes de fibres, présente une origine, qui correspond à la position angulaire exprimée en degrés, qu'occupe le peigne circulaire 7 au moment où la première ligne d'aiguilles ou de dents 8 s'engage dans la tête des fibres au début de la phase de peignage des têtes de fibres, et qui est déphasée, d'un cycle de machine à l'autre, d'une valeur « k1 », exprimée en degrés, du peigne circulaire 7 correspondant au rapport : k ⁢ 1 = 360 * 360 p

Figure imgb0002
According to one characteristic of the invention, the value "p" of the rotation period of the circular comb 7 is chosen such that the active arc of comb lining 7, which is the length of the lining of needles or teeth 8 used during the combing phase of the fiber heads, has an origin, which corresponds to the angular position expressed in degrees, occupied by the circular comb 7 at the moment when the first line of needles or teeth 8 engages in the head of the fibers at the beginning of the phase of combing the fiber heads, and which is out of phase, of a cycle of machine to the other, of a value "k1", expressed in degrees, of the circular comb 7 corresponding to the ratio: k ⁢ 1 = 360 * 360 p
Figure imgb0002

L'angle « k1 » augmente dans le sens de rotation du peigne. Ainsi, en considérant deux cycles consécutifs de la machine, ce n'est jamais la même ligne ou barrette d'aiguilles ou de dents qui, en s'engageant dans les têtes de fibres dépassant de la pince, déterminera l'origine de l'arc actif de garniture du peigne, qui sera utilisé lors de la phase de peignage des têtes.The angle "k1" increases in the direction of rotation of the comb. Thus, considering two consecutive cycles of the machine, it is never the same line or bar of needles or teeth which, by engaging in the fiber heads protruding from the clamp, will determine the origin of the active arc of comb trim, which will be used during the combing phase of the heads.

Par ailleurs, le procédé consiste à choisir une origine relative de l'arc actif de garniture du peigne, k1', telle que k1' = k1 - [ENT( N ) * 360], et où ENT(N) représente la valeur entière du nombre N.Furthermore, the method consists in choosing a relative origin of the active comb lining arc, k1 ', such that k1' = k1 - [ENT (N) * 360], and where ENT (N) represents the integer value number N.

En outre, on choisira préférentiellement une origine relative de l'arc actif de garniture du peigne telle que la variable « k1' » soit comprise entre 10 et 350 degrés. A cet effet, on préférera également des valeurs de « k1' »plutôt proches de 350 degrés et éloignées de 10 degrés.In addition, it will preferentially choose a relative origin of the active arc comb lining such that the variable "k1" is between 10 and 350 degrees. For this purpose, values of "k1" will also be preferred rather close to 350 degrees and away from 10 degrees.

Dans l'exemple représenté à la figure 10c le peigne circulaire peut effectuer un tour complet lors de la phase de peignage des têtes de fibres et environ 2,77 tours par cycle de machine, soit, dans ce cas p = α = 130.1 degrés machine / tour de peigne et N = 2.77 tours de peigne / cycle machine.In the example shown in figure 10c the circular comb can perform a complete turn during the combing phase of the fiber heads and about 2.77 turns per machine cycle, that is, in this case p = α = 130.1 degrees machine / comb and N = 2.77 laps comb / machine cycle.

L'origine de l'arc actif de garniture du peigne de deux cycles consécutifs de la machine est déphasée à chaque cycle de k1 = 996.2 degrés c'est-à-dire relativement au peigne lui-même d'une valeur k1' = 276.2 degrés, obtenue par l'opération suivante : (996.2 - (2 * 360). Dans ce cas, lorsque la machine effectue un cycle, le peigne circulaire tournera de 996.2 degrés soit environ 2,77 tours, et la brosse cylindrique nettoiera 996.2 degrés du peigne circulaire, ce qui revient à dire que le peigne circulaire sera nettoyé environ 2,77 fois par cycle de la machine.The origin of the active arc of comb lining of two consecutive cycles of the machine is out of phase with each cycle of k1 = 996.2 degrees that is to say relative to the comb itself of a value k1 '= 276.2 degrees, obtained by the following operation: (996.2 - (2 * 360) In this case, when the machine performs a cycle, the circular comb will rotate 996.2 degrees or about 2.77 turns, and the cylindrical brush will clean 996.2 degrees circular comb, which is to say that the circular comb will be cleaned about 2.77 times per cycle of the machine.

Sur une peigneuse rectiligne conventionnelle équipée d'un peigne circulaire avec un segment garni d'aiguilles à densité croissante, occupant une partie seulement de la périphérie du cylindre, on constate que l'origine de l'arc actif de garniture du peigne, la longueur de l'arc de la garniture du peigne et la période de rotation du peigne sont toujours les mêmes à chaque cycle de la machine. Les impuretés retirées par le segment garni, à savoir, les fibres trop courtes et les défauts tels que boutons et déchets végétaux qui sont retenues par les aiguilles ou les dents du segment garni sont localisées systématiquement et préférentiellement, d'une part près de l'origine de l'arc actif de garniture du peigne, car ce sont les premières aiguilles qui effectuent la plus grande part du nettoyage et, d'autre part, vers la fin de l'arc actif de garniture du peigne où les impuretés se retrouvent souvent coincées entre les aiguilles les plus fines et les plus serrées.On a conventional rectilinear combing machine equipped with a circular comb with a segment filled with needles of increasing density, occupying only a part of the periphery of the cylinder, it is found that the origin of the active arc of comb lining, the length the arc of the comb lining and the period of rotation of the comb are always the same at each cycle of the machine. The impurities removed by the packed segment, that is to say, too short fibers and defects such as pimples and plant wastes that are held by the needles or teeth of the garnished segment are located systematically and preferably, on the one hand near the origin of the active arc of the comb lining, because it is the first needles which carry out most of the cleaning and, on the other hand, towards the end of the active arc of comb lining where the impurities are often found stuck between the thinnest needles and the tightest ones.

Ainsi, la brosse cylindrique qui est chargée de nettoyer le segment garni doit être capable de retirer d'entre les aiguilles, d'une part, une grande accumulation d'impuretés localisée près de l'origine de l'arc actif de garniture du peigne et, d'autre-part, des impuretés coincées entre les aiguilles fines et serrées situées vers la fin de l'arc actif de garniture du peigne. A cet effet, la vitesse de rotation de la brosse cylindrique est supérieure à celle du peigne circulaire et les poils de la brosse doivent interpénétrer suffisamment les aiguilles du peigne circulaire, ce qui entraîne une usure rapide de ladite brosse cylindrique et des aiguilles du segment garni.Thus, the cylindrical brush which is responsible for cleaning the packed segment must be able to remove from the needles, on the one hand, a large accumulation of impurities localized near the origin of the active arc of comb trim and, on the other hand, impurities stuck between the fine and tight needles located towards the end of the active comb lining. For this purpose, the speed of rotation of the cylindrical brush is greater than that of the circular comb and the bristles of the brush must interpenetrate sufficiently the needles of the circular comb, resulting in rapid wear of said cylindrical brush and the needles of the trimmed segment. .

En effet, sur une peigneuse rectiligne conventionnelle, l'interpénétration des poils de la brosse avec les aiguilles du segment garni est élevée, car le segment garni n'est nettoyé qu'une seule fois par cycle de machine, puisqu'il ne passe qu'une fois par cycle en face des poils de la brosse cylindrique. Par ailleurs, les aiguilles du segment garni s'usent également rapidement au contact de la matière textile, car ce sont toujours les mêmes aiguilles qui sont chargées de la plus forte charge de nettoyage des têtes de fibres.Indeed, on a conventional rectilinear combing machine, the interpenetration of the bristles of the brush with the needles of the trimmed segment is high, because the trimmed segment is cleaned only once per machine cycle, since it passes only once per cycle in front of the bristles of the cylindrical brush. In addition, the needles of the garnished segment also wear quickly in contact with the textile material, because it is always the same needles that are loaded with the highest load cleaning of the fiber heads.

La présente invention permet de remédier à ces inconvénients. En effet, l'origine de l'arc actif de garniture du peigne pouvant être régulièrement décalée à chaque cycle de la machine ce ne sont jamais deux fois de suite les mêmes aiguilles ou dents du peigne circulaire qui s'engagent dans la tête des fibres au début de la phase de peignage des têtes. La longueur de l'arc actif de la garniture du peigne est réglable et proportionnelle au diamètre du peigne et à la période de rotation du peigne. De préférence, la période de rotation du peigne est choisie de telle manière que le peigne circulaire effectue au moins un tour de rotation par cycle de la machine. Ainsi l'arc actif de la garniture du peigne sera nettoyé plus d'une fois par cycle de la machine.The present invention overcomes these disadvantages. Indeed, the origin of the active arc of comb lining can be regularly shifted at each cycle of the machine are never twice in succession the same needles or teeth of the circular comb which engage in the head of the fibers at the beginning of the combing phase of the heads. The length of the active arc of the comb lining is adjustable and proportional to the diameter of the comb and the period of rotation of the comb. Preferably, the period of rotation of the comb is chosen such that the circular comb performs at least one revolution of rotation per cycle of the machine. Thus the active arc of the comb lining will be cleaned more than once per cycle of the machine.

Le travail de nettoyage du peigne circulaire par la brosse cylindrique s'en trouve facilité et l'usure des poils de la brosse est réduite, car l'interpénétration des poils de la brosse avec les aiguilles du peigne circulaire peut être moins élevée. Simultanément, l'usure des aiguilles ou des dents du peigne circulaire est également réduite. Le peigne circulaire est mieux nettoyé et reste donc efficace plus longtemps. Il en résulte que le ruban peigné est de meilleure qualité, que les éléments mécaniques tels que les aiguilles ou dents du peigne circulaire et la brosse cylindrique ont une durée de vie augmentée et que les interventions de nettoyage du peigne circulaire, de remplacement de la brosse cylindrique ou des aiguilles ou dents du peigne circulaire sont moins fréquentes. Le rendement de la peigneuse et la charge ouvrière du personnel sont ainsi améliorés.The cleaning work of the circular comb by the cylindrical brush is facilitated and the wear of the bristles of the brush is reduced because the interpenetration of the bristles of the brush with the needles of the circular comb may be lower. At the same time, the wear of the needles or teeth of the circular comb is also reduced. The circular comb is better cleaned and therefore remains effective longer. The result is that the combed tape is of better quality, that the mechanical elements such as the needles or teeth of the circular comb and the cylindrical brush have an increased life and that the cleaning operations of the circular comb, replacement of the brush cylindrical or needles or teeth of the circular comb are less frequent. The performance of the combing machine and the workload of the personnel are thus improved.

La valeur « p » de la période de rotation du peigne circulaire 7 est, de préférence, de l'ordre de 130 degrés. Cette valeur « p » de la période de rotation du peigne circulaire sera avantageusement choisie parmi tous les nombres réels « k2 » tels que : k ⁢ 2 = p PGCD p ⁢ 360 ≥ 4

Figure imgb0003

où le PGCD (p, 360) est le plus grand commun diviseur des valeurs « p » et « 360 » exprimés en degrés.The value "p" of the rotation period of the circular comb 7 is preferably of the order of 130 degrees. This value "p" of the rotation period of the circular comb will advantageously be chosen from among all the real numbers "k2" such that: k ⁢ 2 = p GCD p ⁢ 360 ≥ 4
Figure imgb0003
where the GCD (p, 360) is the greatest common divisor of the values "p" and "360" expressed in degrees.

Ainsi, par exemple, si la période de rotation du peigne circulaire est de 130 degrés, k2 sera égal à 13 et s'il est de 131 degrés, k2 sera égal à 131.Thus, for example, if the rotation period of the circular comb is 130 degrees, k2 will be equal to 13 and if it is 131 degrees, k2 will be equal to 131.

La variable « k2 » représente le nombre de cycles machine au bout duquel la même ligne d'aiguilles ou barrette d'aiguilles du peigne circulaire s'engagera dans les têtes de fibres dépassant de la pince. Ainsi, lorsque la période de rotation du peigne circulaire est de 130 degrés, alors la même ligne d'aiguilles sera utilisée tous les 13 cycles de la machine.The variable "k2" represents the number of machine cycles at the end of which the same line of needles or barrette of needles of the circular comb will engage in the heads of fibers protruding from the clamp. Thus, when the rotation period of the circular comb is 130 degrees, then the same needle line will be used every 13 cycles of the machine.

De préférence on choisira une période de rotation du peigne circulaire telle que la variable « k2 » soit la plus grande possible de telle manière que la même ligne d'aiguille soit utilisée le moins souvent possible et que l'usure des aiguilles du peigne circulaire soit la plus régulière possible. Par ailleurs, il sera pris en considération une période de rotation du peigne circulaire telle que la variable « N », qui correspond au nombre de tours que réalise le peigne circulaire pendant un cycle de machine soit la plus grande possible.Preferably, a period of rotation of the circular comb will be chosen such that the variable "k2" is as large as possible in such a way that the same needle line is used as little as possible and that the wear of the needles of the circular comb is as regular as possible. Moreover, it will be considered a rotation period of the circular comb such as the variable "N", which corresponds to the number of turns that the circular comb performs during a machine cycle is the largest possible.

D'autres exemples de rotation du peigne circulaire sur une fraction de tour ou nettement plus d'un tour lors de la phase de peignage des têtes de fibres sont donnés ci après : Période de rotation du peigne circulaire p en degrés Origine absolue de l'arc de peignage k1 en degrés origine relative k1' en degrés PGCD (p , 360) Nombres de cycles k2 Nombre de tours de peigne par cycle machine N 50,0 2592,0 72,0 10,0 5 7,20 70,0 1851,4 51,4 10,0 7 5,14 80,0 1620,0 180,0 40,0 2 4,50 100,0 1296,0 216,0 20,0 5 3,60 110,0 1178,2 98,2 10,0 11 3,27 120,0 1080,0 0,0 120,0 1 3,00 128,8 1006,2 286,2 0,8 161 2,80 129,0 1004,7 284,7 3,0 43 2,79 129,1 1003,9 283,9 0,1 1291 2,79 129,6 1000,0 280,0 14,4 9 2,78 129,7 999,2 279,2 0,1 1297 2,78 129,9 997,7 277,7 0,3 433 2,77 130,0 996,9 276,9 10,0 13 2,77 130,1 996,2 276,2 0,1 1301 2,77 130,5 993,1 273,1 4,5 29 2,76 130,6 992,3 272,3 0,2 653 2,76 130,7 991,6 271,6 0,1 1307 2,75 130,8 990,8 270,8 1,2 109 2,75 130,9 990,1 270,1 0,1 1309 2,75 131,0 989,3 269,3 1,0 131 2,75 131,2 987,8 267,8 1,6 82 2,74 131,3 987,1 267,1 0,1 1313 2,74 140,0 925,7 205,7 20,0 7 2,57 150,0 864,0 144,0 30,0 5 2,40 160,0 810,0 90,0 40,0 4 2,25 170.0 762.3 42.3 10.0 17 2.12 175.0 740.6 20.6 5.0 35 2.06 180.0 720.0 0.0 180.0 1 2.00 190.0 682.1 322.1 10.0 19 1.89 200.0 648.0 288.0 40.0 5 1.80 220.0 589.1 229.1 20.0 11 1.64 235.0 551.5 191.5 5.0 47 1.53 250.0 518.4 158.4 10.0 25 1.44 270.0 480.0 120.0 90.0 3 1.33 300.0 432.0 72.0 60.0 5 1.20 305.0 424.9 64.9 5.0 61 1.18 320.0 405.0 45.0 40.0 8 1.12 340.0 381.2 21.2 20.0 17 1.06 350.0 370.3 10.3 10.0 35 1.03 360.0 360.0 0.0 360.0 1 1.00 370.0 350.3 350.3 10.0 37 0.97 400.0 324.0 324.0 40.0 10 0.90 Other examples of rotation of the circular comb on a fraction of a turn or much more than one turn during the combing phase of the fiber heads are given below: Period of rotation of the circular comb p in degrees Absolute origin of the combing arc k1 in degrees relative origin k1 'in degrees PGCD (p, 360) Number of cycles Number of comb spins per machine cycle N 50.0 2592.0 72.0 10.0 5 7.20 70.0 1851.4 51.4 10.0 7 5.14 80.0 1620.0 180.0 40.0 2 4.50 100.0 1296.0 216.0 20.0 5 3.60 110.0 1178.2 98.2 10.0 11 3.27 120.0 1080.0 0.0 120.0 1 3.00 128.8 1006.2 286.2 0.8 161 2.80 129.0 1004.7 284.7 3.0 43 2.79 129.1 1003.9 283.9 0.1 1291 2.79 129.6 1000.0 280.0 14.4 9 2.78 129.7 999.2 279.2 0.1 1297 2.78 129.9 997.7 277.7 0.3 433 2.77 130.0 996.9 276.9 10.0 13 2.77 130.1 996.2 276.2 0.1 1301 2.77 130.5 993.1 273.1 4.5 29 2.76 130.6 992.3 272.3 0.2 653 2.76 130.7 991.6 271.6 0.1 1307 2.75 130.8 990.8 270.8 1.2 109 2.75 130.9 990.1 270.1 0.1 1309 2.75 131.0 989.3 269.3 1.0 131 2.75 131.2 987.8 267.8 1.6 82 2.74 131.3 987.1 267.1 0.1 1313 2.74 140.0 925.7 205.7 20.0 7 2.57 150.0 864.0 144.0 30.0 5 2.40 160.0 810.0 90.0 40.0 4 2.25 170.0 762.3 42.3 10.0 17 2.12 175.0 740.6 20.6 5.0 35 2.06 180.0 720.0 0.0 180.0 1 2.00 190.0 682.1 322.1 10.0 19 1.89 200.0 648.0 288.0 40.0 5 1.80 220.0 589.1 229.1 20.0 11 1.64 235.0 551.5 191.5 5.0 47 1.53 250.0 518.4 158.4 10.0 25 1.44 270.0 480.0 120.0 90.0 3 1.33 300.0 432.0 72.0 60.0 5 1.20 305.0 424.9 64.9 5.0 61 1.18 320.0 405.0 45.0 40.0 8 1.12 340.0 381.2 21.2 20.0 17 1.06 350.0 370.3 10.3 10.0 35 1.03 360.0 360.0 0.0 360.0 1 1.00 370.0 350.3 350.3 10.0 37 0.97 400.0 324.0 324.0 40.0 10 0.90

Lorsque la valeur « p » est supérieure à « α » degrés, le peigne circulaire effectue moins d'un tour de rotation pendant la phase de peignage des têtes de fibres et, inversement, lorsque la valeur « p » est inférieure à « α » degrés, le peigne circulaire effectue plus d'un tour de rotation pendant la phase de peignage des têtes de fibres.When the value "p" is greater than "α" degrees, the circular comb performs less than one turn during the combing phase of the fiber heads and, conversely, when the value "p" is less than "α" degrees, the circular comb performs more than one turn during the combing phase of the fiber heads.

De préférence, le diamètre du peigne circulaire est inférieur à celui couramment employé. Son prix de fabrication s'en trouve réduit et sa manipulation est facilitée car son encombrement et son poids sont réduits. En outre, son faible encombrement permet, toutes choses restant égales par ailleurs, de ménager davantage de place entre le capteur pneumatique et le peigne circulaire.Preferably, the diameter of the circular comb is smaller than that currently employed. Its manufacturing cost is reduced and its handling is facilitated because its size and weight are reduced. In addition, its small size allows, all other things being equal, to provide more space between the pneumatic sensor and the circular comb.

De plus, du fait que le peigne circulaire est garni sur au moins 60%, mais préférentiellement sur toute sa périphérie, par opposition aux peignes conventionnels équipés d'un segment garni et d'un segment non garni, il est parfaitement équilibré dynamiquement. Il peut être garni indifféremment d'aiguilles ou de dents, dont la taille et la densité sont choisies en fonction de la matière textile à travailler et de l'opération de peignage ou de repeignage à réaliser. Sa vitesse de rotation est préférentiellement uniformément constante ce qui entraîne un meilleur équilibrage global de la peigneuse.In addition, because the circular comb is packed at least 60%, but preferentially over its entire periphery, as opposed to conventional combs equipped with a trimmed segment and an unfilled segment, it is perfectly balanced dynamically. It can be garnished indifferently needles or teeth, whose size and density are chosen according to the textile material to be worked and the operation of combing or repainting to achieve. Its rotational speed is preferably uniformly constant which results in a better overall balancing of the combing machine.

De préférence, au peigne circulaire conforme à l'invention est associé un dispositif d'avance automatique de la brosse cylindrique tel que décrit dans FR-A-2 651 512 et qui est destiné à rattraper l'usure de la brosse cylindrique.Preferably, the circular comb according to the invention is associated with a device for automatically feeding the cylindrical brush as described in FR-A-2,651,512 and which is intended to make up for the wear of the cylindrical brush.

La charge de nettoyage du peigne circulaire par la brosse étant allégée, les poils de la brosse interpénètrent faiblement les aiguilles ou les dents du peigne circulaire de manière à les nettoyer. Périodiquement et pendant une faible durée, un dispositif automatique augmente la valeur d'interpénétration des poils de la brosse avec les dents du peigne circulaire de telle façon que les aiguilles ou les dents du peigne circulaire soient nettoyées à fond.The cleaning load of the circular comb by the brush being lightened, the bristles of the brush slightly interpenetrate the needles or the teeth of the circular comb so as to clean them. Periodically and for a short time, an automatic device increases the interpenetration value of the bristles of the brush with the teeth of the circular comb so that the needles or the teeth of the circular comb are cleaned thoroughly.

A l'issue de cette période de nettoyage en profondeur, le dispositif automatique réduit la valeur d'interpénétration, afin que la brosse retrouve la position qu'elle avait avant ladite période de nettoyage en profondeur. Ainsi, l'usure des poils de la brosse cylindrique est réduite et sa durée de vie est allongée.After this period of deep cleaning, the automatic device reduces the interpenetration value, so that the brush returns to the position it had before said deep cleaning period. Thus, the wear of the bristles of the cylindrical brush is reduced and its life is lengthened.

De préférence, selon une autre caractéristique de invention, et comme le montre la figure 2 des dessins annexés, la peigneuse rectiligne n'est pas pourvue d'une brosse enfonceuse de la tête des fibres 23. Une telle brosse enfonceuse est généralement chargée de contraindre la tête des fibres 23 à pénétrer entre les aiguilles ou les dents 8 du peigne circulaire 7. La mâchoire supérieure 4 de la pince 3 est alors avantageusement pourvue d'un dispositif enfonceur 4" muni d'une surface de détour 4', qui contraint la tête des fibres 23 à être orientée presque perpendiculairement à la tangente du peigne circulaire 7. Ce dispositif 4" présente, dans sa partie inférieure, une surface d'appui 4"' destinée à coopérer avec la tête des fibres 23 et à la contraindre à pénétrer entre les aiguilles ou les dents 8 du peigne circulaire 7, ladite surface d'appui 4"' s'étendant à partir de la surface de détour 4' sur une distance au moins égale à 3 mm.Preferably, according to another characteristic of the invention, and as shown by figure 2 In the accompanying drawings, the straight combing machine is not provided with a sinking brush of the fiber head 23. Such a sinking brush is generally responsible for constraining the head of the fibers 23 to penetrate between the needles or the teeth 8 of the circular comb. 7. The upper jaw 4 of the clamp 3 is then advantageously provided with a driving device 4 "provided with a diverting surface 4 ', which forces the head of the fibers 23 to be oriented almost perpendicularly to the tangent of the circular comb 7 This device 4 "has, in its lower part, a bearing surface 4"'intended to cooperate with the head of the fibers 23 and to constrain it to penetrate between the needles or the teeth 8 of the circular comb 7, said surface of 4 '' support extending from the detour surface 4 'over a distance at least equal to 3 mm.

La surface d'appui 4"' du dispositif enfonceur 4" peut être plane ou curviligne. Dans ce dernier cas, son rayon de courbure est concentrique à celui du peigne circulaire 7.The bearing surface 4 "'of the driving device 4" may be flat or curvilinear. In the latter case, its radius of curvature is concentric with that of the circular comb 7.

Le dispositif enfonceur 4" peut faire partie intégrante de la mâchoire supérieure 4 de la pince 3 ou être amovible et est avantageusement réalisé dans le même matériau que la mâchoire supérieure 4, à savoir en un matériau métallique , plastique, ou composite.The driving device 4 "may be an integral part of the upper jaw 4 of the clamp 3 or be removable and is advantageously made of the same material as the upper jaw 4, namely a metal material, plastic, or composite.

Afin de peigner les têtes de fibres, la mâchoire supérieure 4, qui est articulée, est rapprochée de la mâchoire inférieure 5 jusqu'à la toucher et à pincer les fibres situées entre les deux mâchoires pour les retenir, puis la mâchoire supérieure poursuit son mouvement de rapprochement vers le peigne circulaire 7 et entraîne avec elle la mâchoire inférieure 5 jusqu'à une distance telle que la surface d'appui 4"' du dispositif enfonceur 4" affleure sans les toucher les aiguilles ou les dents 8 du peigne circulaire 7.In order to comb the fiber heads, the upper jaw 4, which is articulated, is brought closer to the lower jaw 5 to touch it and to pinch the fibers between the two jaws to hold them, then the upper jaw continues its movement approaching the circular comb 7 and carries with it the lower jaw 5 to a distance such that the bearing surface 4 "'of the embossing device 4" is flush without touching the needles or the teeth 8 of the circular comb 7.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et représenté aux dessins annexés. Des modifications restent possibles, notamment du point de vue de la constitution des différents éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention.Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of the invention.

Claims (26)

  1. Rectilinear combing process for a rectilinear combing machine, characterized in that it essentially consists in combing the fibre heads using a circular comb (7), in the form of a cylinder furnished with needles or teeth (8) distributed over at least 60% of its periphery, said circular comb (7) performing a non-integer number of rotation turns (N) per machine cycle with a continuous and adjustable rotation speed.
  2. Rectilinear combing process for a rectilinear combing machine, characterized in that it essentially consists in combing the fibre heads using a circular comb (7), in the form of a cylinder furnished with needles or teeth (8) distributed over its entire periphery, said circular comb (7) performing an integer number of rotation turns (N) per machine cycle with a continuous and adjustable rotation speed.
  3. Process according to Claim 2, characterized in that the circular comb (7) performs at least one rotation turn (N) per machine cycle.
  4. Process according to Claim 1, characterized in that the combing of the fibre heads by the circular comb (7) is carried out during a rotation of the latter of between 0.7 and 1.5 turns.
  5. Process according to any one of Claims 1 to 4, characterized in that the combing of the fibre heads is carried out during less than one complete rotation turn of the circular comb (7).
  6. Process according to any one of Claims 1 to 4, characterized in that the combing of the fibre heads is carried out during more than one complete rotation turn of the circular comb (7).
  7. Process according to any one of Claims 1 and 3 to 6, characterized in that it consists in choosing a value "p" of the rotation period of the circular comb (7) such that the active furnished arc of the comb (7), which is the length of the furnishing with needles or teeth (8) used during the phase of combing the fibre heads, has an origin that corresponds to the angular position, expressed in degrees, that the circular comb (7) occupies at the moment when the first line of needles or teeth (8) engages in the fibre head at the start of the phase of combing the fibre heads and which is phase-shifted from one machine cycle to another by a value "k1", expressed in degrees, of the circular comb (7) corresponding to the ratio: k ⁢ 1 = 360 * 360 p
    Figure imgb0006
  8. Process according to Claim 7, characterized in that it consists in choosing a relative origin of the active furnished arc of the comb, k1', such that k1' = k1 - [INT(N)x360], where INT(N) represents the integer value of the number N, which represents the number of turns that the circular comb performs per machine cycle and where k1' is between 10 degrees and 350 degrees.
  9. Process according to Claim 8, characterized in that k1' is close to 350 degrees and far from 10 degrees.
  10. Process according to Claim 7, characterized in that the value "p" of the rotation period of the circular comb (7) is chosen from all real numbers "k2" such that: k ⁢ 2 = p LCD p ⁢ 360 ≥ 4
    Figure imgb0007
    in which LCD(p,360) is the largest common divisor of the values "p" and "360" expressed in degrees, the variable "k2" represents the number of machine cycles at the end of which the same line or linear array of needles (8) of the circular comb (7) will engage in the fibre heads projecting from the nipper.
  11. Process according to Claim 7, characterized in that the value "p" of the rotation period of the circular comb (7) is around 130 degrees.
  12. Rectilinear combing machine for implementing the process according to any one of Claims 1 and 3 to 11, comprising a feed device, a detaching device and a cleaning device for the fibre heads, comprising a circular comb and a device for cleaning the fibre tails, characterized in that the circular comb (7) is a cylinder furnished over at least 60% of its periphery with needles or teeth (8), of identical or different characteristics, the rotation speed of which cylinder is continuous and adjustable, the cylinder being mounted on a support shaft (9), the position of which is fixed relative to the frame (10) of the machine, this comb (7) performing a non-integer number of rotation turns (N) per machine cycle.
  13. Rectilinear combing machine for implementing the process according to any one of Claims 2 to 11, comprising a feed device, a detaching device and a cleaning device for the fibre heads, comprising a circular comb and a device for cleaning the fibre tails, characterized in that the circular comb (7) is a cylinder furnished over its entire periphery with needles or teeth (8), of identical or different characteristics, the rotation speed of which cylinder is continuous and adjustable, said cylinder being mounted on a support shaft (9), the position of which is fixed relative to the frame (10) of the machine, this comb (7) performing an integer number of rotation turns (N) per machine cycle.
  14. Combing machine according to either of Claims 12 and 13, characterized in that the circular comb (7) is fastened to a support shaft mounted, with the possibility of rotating, so as to be cantilevered on the frame (10) of the machine, this frame having, on the side facing the free end of the support shaft, an opening that allows lateral extraction of the circular comb.
  15. Combing machine according to either of Claims 12 and 13, characterized in that the tips of the needles or teeth (8) of the circular comb (7) are arranged on envelope cylinders of different radii.
  16. Combing machine according to any one of Claims 12 to 15, characterized in that the circular comb (7) is formed by several circularly arcuate portions (34') each provided with teeth or needles (8).
  17. Combing machine according to any one of Claims 12 to 16, characterized in that the teeth or needles (8) of the circular comb (7) are produced by the winding, with a winding angle of between 55 degrees and 125 degrees relative to the axis of the circular comb (7), of one or more toothed wires (35) with touching turns (A, B, C, etc.) of identical or different characteristics, or the sequences of which are repeated periodically.
  18. Combing machine according to any one of Claims 12 to 17, characterized in that the circular comb (7) is produced by the winding of toothed rings (36) or of circular ring segments (37) having identical teeth or teeth with different characteristics (A, B, C, etc.) in a repetitive sequence.
  19. Combing machine according to any one of Claims 12 to 18, characterized in that the teeth or needles (8) of the circular comb (7) have the same density over the entire periphery of said circular comb (7) or different densities, for example by an arrangement along contiguous lines of needles or teeth (8) having different densities.
  20. Combing machine according to either of Claims 12 or 13, characterized in that it is not provided with a dabbing brush for the fibre head (23).
  21. Combing machine according to either of Claims 12 or 13, characterized in that the top jaw (4) of the nipper (3) is provided with a dabber (4") having a detour surface (4') that forces the fibre head (23) to be oriented so as to be almost perpendicular to the tangent of the circular comb (7).
  22. Combing machine according to Claim 21, characterized in that the dabber (4") has, in its lower part, a bearing surface (4"') intended to cooperate with the fibre head (23) and to force it between the needles or teeth (8) of the circular comb (7), said bearing surface (4"') extending from the detour surface (4') over a distance of at least 3 mm.
  23. Combing machine according to Claim 22, characterized in that the bearing surface (4"') of the dabber (4") is plane.
  24. Combing machine according to Claim 22, characterized in that the bearing surface (4"') of the dabber (4") is curvilinear, its radius of curvature being concentric with that of the circular comb (7).
  25. Combing device according to Claim 21, characterized in that the dabber (4") forms an integral part of the top jaw (4) of the nipper (3).
  26. Combing machine according to Claim 21, characterized in that the dabber (4") is removable.
EP02730375A 2001-04-30 2002-04-29 Method for rectilinear combing and rectilinear combing machine therefor Expired - Lifetime EP1383948B1 (en)

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EP01440122A EP1254976A1 (en) 2001-04-30 2001-04-30 Method of combing and rectilinear comb for implementing the method
PCT/FR2002/001489 WO2002088440A1 (en) 2001-04-30 2002-04-29 Method for rectilinear combing and rectilinear combing machine therefor
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EP2426239A1 (en) 2010-09-04 2012-03-07 Maschinenfabrik Rieter AG Round comb of a combing machine
WO2012027852A1 (en) 2010-09-04 2012-03-08 Maschinenfabrik Rieter Ag Circular comb of a combing machine
EP2789716A1 (en) 2013-04-12 2014-10-15 Maschinenfabrik Rieter Ag Round comb of a combing machine

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EP1526193B2 (en) * 2003-10-21 2018-12-05 Staedtler & Uhl KG Clothing of a fixed comb in a textile combing machine
ITMI20081098A1 (en) * 2007-06-29 2008-12-30 Truetzschler Gmbh & Co Kg EQUIPMENT FOR THE FIBER SORTING OR THE FIBER SELECTION OF A FIBER BAND INCLUDING TEXTILE FIBERS, ESPECIALLY FOR COMBING
CH703822A2 (en) * 2010-09-22 2012-03-30 Rieter Ag Maschf Nipper unit for a combing machine.
CH705914A2 (en) * 2011-12-16 2013-06-28 Rieter Ag Maschf Circular comb for a combing machine, and comber.
CN109893461A (en) 2012-07-27 2019-06-18 荷兰联合利华有限公司 The method for being used to prepare improved conditioning composition
JP6135718B2 (en) * 2015-08-04 2017-05-31 株式会社豊田自動織機 Comb

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FR1484526A (en) * 1965-06-25 1967-06-09 Nitto Shoji Kabushiki Kaisha Combing cylinder for a combing machine and its manufacturing process
US3445896A (en) * 1965-12-09 1969-05-27 Malcolm Chaikin Combing machines for wool and other textile fibres
DE8430562U1 (en) * 1984-10-18 1985-02-21 Staedtler & Uhl, 8540 Schwabach SAW TOOTH PUNCHED PART AS SET FOR A COMBING SEGMENT OF A COMBED ROLLER FOR TEXTILE MACHINES
IT1201971B (en) * 1985-04-17 1989-02-02 Cerimates Spa COMBINATION PROCESS FOR TEXTILE FIBERS AND CIRCULAR COMB TO CARRY OUT SUCH PROCEDURE
CH682403A5 (en) * 1990-04-14 1993-09-15 Rieter Ag Maschf Comber.
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US5517725A (en) * 1995-03-27 1996-05-21 Mandl; Gerhard Comber machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2426239A1 (en) 2010-09-04 2012-03-07 Maschinenfabrik Rieter AG Round comb of a combing machine
WO2012027852A1 (en) 2010-09-04 2012-03-08 Maschinenfabrik Rieter Ag Circular comb of a combing machine
EP2789716A1 (en) 2013-04-12 2014-10-15 Maschinenfabrik Rieter Ag Round comb of a combing machine

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RU2315137C2 (en) 2008-01-20
EP1254976A1 (en) 2002-11-06

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